33results about How to "Large temperature control range" patented technology

The invention provides a temperature control cabinet of electronic equipment, comprising a cabinet body, wherein the outer side of the cabinet body is provided with a temperature adjusting device which is used for adjusting the temperature in the cabinet body; an air inlet is arranged at the lower part of one side surface of the cabinet body, and an air outlet is arranged at the upper part of the other side surface; and a fan is arranged at the position of an air opening. The temperature control cabinet also comprises a control device; and the control device comprises a detection module, a communication module and a control module. The temperature control cabinet provided by the invention has the beneficial effects that the electronic equipment with higher requirement for temperature is arranged by areas in a base station machine room, the small-power temperature adjusting device is utilized for independently carrying out temperature control on the electronic equipment, the operation time of a high-power air conditioner in the base station machine room is reduced, the energy-saving effect is achieved, the service life of the electronic equipment is prolonged, and the operating cost is reduced.

The invention belongs to the technical field of aero-engine test, and particularly relates to a low-temperature test temperature control system and method for an aero-engine nozzle oil source pump. Atpresent, low-power compressor units are often selected on test benches. However, in the case of high-power heating of the nozzle oil source pump, the refrigeration capacity of the low-power compressor units is difficult to balance the heat generation of the test piece. The invention provides the low-temperature test temperature control system and method for the aviation engine nozzle oil source pump, which adopt a liquid nitrogen-fuel heat exchange system to cool down the fuel and cooperate with a temperature control mechanism to achieve rapid response refrigeration, have the advantages of small space usage, large cooling power, wide temperature control range, less equipment investment and easy adaptability improvement, can achieve fast power follow-up, and are high in accuracy of fuel temperature control and small in temperature fluctuation when used for low-temperature performance test of the high-power nozzle oil source pump.

The invention provides a passive thermal-sensitive fire extinguishing starter. The fire extinguishing starter is provided with a housing; a magnetic power source consisting of a magnetic bar and an armature arranged on the neutral axis position of the housing; the magnetic bar can move relatively to the armature; a spring is mounted at the tail part of the magnetic bar; a pull rod is fixedly connected to the tail end of the magnetic bar; the tail part of the pull rod is extended from the upper end surface of the housing; and a fusible alloy locating structure capable of axially locating the pull rod is arranged at the extending part. The magnetic bar is located in an upper contracting position in the housing by the fusible alloy at the normal temperature; and when the ambient temperature reaches the preset temperature, the fusible alloy melts, so that the magnetic bar is released and moves downwards under the action of the spring, and then, the magnetic bar passes through the armature to generate the induction starting current, thereby completing the task of starting the passive thermal-sensitive fire extinguishment. The invention systematically integrates the fusible alloy and the magnetic power source, thereby not only expanding the temperature-control range of a starter, but also greatly simplifying the structure and further improving the operating reliability of a magnetic power source.

The invention discloses an optical interference light source device of a current-temperature control semiconductor laser. The optical interference light source device comprises a heating panel, an annular semiconductor cooling piece, a semiconductor laser, a PCB, a head sensor and a fixed plate, the centers of the two sides of the PCB are respectively provided with a first circular windowing copper area and a second circular windowing copper area, and the first circular windowing copper area is in contact with the second circular windowing copper area through a via hole; the lower end of the housing of the semiconductor laser is connected with the first circular windowing copper area through heat conducting silicone grease, and the cooling surface of the annular semiconductor cooling pieceis connected with the first circular windowing copper area through the heat conducting silicone grease; the heating surface of the annular semiconductor cooling piece is connected with the heating panel through the heat conducting silicone grease; the heat sensor is arranged on the first circular windowing copper area to detect the temperature of the first circular windowing copper area. The present invention further discloses a measurement system. The structure is simple, the thermal conductivity is good, the temperature control precision is high and the output wavelength of the laser is stable.

The invention belongs to a potentiometric titration system and specifically relates to an environment-controllable temperature control potentiometric titration system and an application method thereof. The environment-controllable temperature control potentiometric titration system comprises a liquid adding system, a determining system, a stirring system, a weighting system used for sensing the mass change of the liquid adding system, a temperature control system and a titration environment controlling system, wherein the temperature control potentiometric titration system comprises a titration cup used for mixing liquid; the liquid adding system and the determining system are both connected with the titration cup; the stirring system and the temperature control system are both arranged on the titration cup; and the titration environment controlling system comprises a visual environmental cabinet used for supplying a controllable environment. The environment-controllable temperature control potentiometric titration system disclosed by the invention has the advantages of wide temperature control scope, high stability, high applicability, convenient operation, simple equipment, low cost, and the like, and is especially suitable for the accurate temperature-control potentiometric titration for the colored, colloid or turbid liquid under specific environment, such as, anaerobic environment.

The invention discloses an optical reference cavity temperature control system. The system comprises a vacuum housing layer, a temperature control shielding layer and a temperature control loop, wherein the vacuum housing layer is disposed at the outermost layer, the temperature control shielding layer is disposed in the vacuum housing layer, and the optical reference cavity is disposed in the temperature control shielding layer. The temperature control loop includes a semiconductor refrigerating chip, wherein the semiconductor refrigerating chip is used to control the temperature of the temperature control shielding layer. The optical reference cavity temperature control system of the invention has a large temperature control range and high temperature control precision.

The invention discloses a liquid expansion temperature controller. The liquid expansion temperature controller comprises a bracket, a first porcelain ring, a first wiring piece, a long elastic sheet,a second porcelain ring, a fixed contact piece, a second wiring piece, a third porcelain ring, a bone china mounting frame, a fourth porcelain ring and a bone china lifting mounting plate which are fixed through rivets in sequence; the lower end of a porcelain column props against the long elastic sheet; the tail end of the long elastic sheet is fixed with a short elastic sheet through the bone china; the free end of the short elastic sheet is positioned above the fixed contact piece; a mounting shaft is arranged at the extension end of the bone china lifting mounting plate; the mounting shaftis sleeved with a bone china lifting plate; the lower part of the bone china is mounted on the bone china mounting frame; the lower end of the bone china is in contact with the upper surface of the bone china lifting plate; the liquid expansion temperature controller also comprises a liquid temperature sensing pack; the temperature sensing pack is connected with a capillary tub; and the tail endof the capillary tube is sealed, and the capillary tube is positioned between the bone china lifting mounting plate and the bone china lifting plate. The liquid expansion temperature controller is simple in structure, accurate in temperature control, long in service life, stable and reliable, low in start-stop temperature difference, large in temperature control regulation range, high in load current, and convenient and low in cost.

The invention discloses a multi-stage electric heating tube, comprising a flow guiding tube and a heating layer, wherein the heating layer wraps the flow guiding tube, the heating layer is composed oftwo sections of heating elements, two ends of the heating elements are fixed by conductive coils, and a manufacturing method of the multi-stage electric heating tube is also disclosed. The multi-stage electric heating tube can be configured with different power segments according to the heating demand to realize the segmented control of a heating tube, and different power can be selected for heating according to different temperatures, so as to improve the heating efficiency.

The invention discloses a large X-ray inspection system detector structure, and belongs to the field of security inspection equipment. The detector structure comprises three parts of a base assembly,a detection assembly and a heat dissipation / heating assembly, wherein the heat dissipation / heating assembly comprises an air channel loop consisting of an air inlet channel and an air outlet channel,a refrigeration / heating air conditioning unit arranged at the inlet of the air inlet channel, and an enhanced loop system mounted on the air channel loop. The main structure of the invention adopts analuminum alloy or a steel I-shaped beam, and an outer cover adopts a thin steel plate, so that the processing performance of the detector is improved, the weight of the detector structure is reduced,and the detector cost is lowered; the detector module can be independently adjusted, the two-nut fastening is adopted in a separate adjusting structure, and the maintainability of the detector is improved; and the enhanced loop system is installed on the air channel loop, so that the fluidity of air in the elongated air channel is improved, the temperature control effect is better, and the environment adaptability is higher.

The invention provides a tuning fork resonant type measurement device and method for platelet contractile force. The tuning fork resonant type measurement device comprises a constant temperature sealing bin, a metal shielding case arranged inside the constant temperature sealing bin, a tuning fork sensor mounted in the metal shielding case, an injection hole, communicated with the interior of themetal shielding case, for blood to be detected and a reagent, a tuning fork driving and detection circuit connected with the tuning fork sensor, a temperature control circuit connected with the constant temperature sealing bin, a microcontroller controlling the tuning fork driving and detection circuit and the temperature control circuit for communication, and an intelligent terminal communicatedwith the microcontroller. The device can accomplish the accurate measurement on the platelet contractile force by only using a trace amount of blood.

The invention provides a temperature-control electromagnetic clutch and belongs to the technical field of electromagnetic clutches. The temperature-control electromagnetic clutch comprises a driving part, a driven part, a temperature-control mechanism connected with the driving part, and a cooling mechanism connected with the driven part, wherein the driving part comprises a belt pulley and an electromagnet arranged in the belt pulley; the driven part comprises an armature and a driving shaft arranged at the middle of the armature; the electromagnet comprises an inner coil and an outer coil; the temperature-control mechanism comprises a first temperature-control switch and a second temperature-control switch; the first temperature-control switch is connected with the outer coil; the second temperature-control switch is connected with the inner coil; the cooling mechanism comprises an air cooling device and a cooling pipe; the air cooling device is connected with the driving shaft; the cooling pipe is arranged in the driving shaft and communicates with the air cooling device; the air cooling device comprises a supporting frame, a fan and a cooling disc; the cooling disc is arranged at the end, close to the fan, of the supporting frame; a cooling cavity is formed in the cooling disc; and a plurality of cooling holes which are penetrating from top to bottom are formed in the cooling disc. The temperature-control electromagnetic clutch provided by the invention has the advantages that the temperature-control range is wide, the working temperature stability can be effectively guaranteed, and the service life can be ensured.

The invention relates to a silicon oil fan clutch, comprising a shell, an oil storage cover, a front cover, a main drive shaft and a main drive plate arranged on the main drive shaft, wherein, the front cover is connected with the shell in a sealing way, the oil storage cover is arranged at the front end of the front cover and forms an oil storage cavity with the front cover, and the main drive plate, the front cover and the shell form a gearing cavity; besides, the front cover is provided with an oil outlet channel; an oil inlet end arranged at the oil outlet channel is provided with a valve plate which is arranged at the end surface of the front cover by an elastic work piece, and the valve plate can open the oil outlet channel as force is imposed upon the valve plate by the elastic work piece; the middle part of the front cover is provided with a through hole, a guide tube end is arranged in the through hole by a guide tube bearing, a thimble is arranged in the guide tube end and pushes against the valve plate, and a guide tube joint is externally connected with a fluid source controlled by an engine control unit. Compared with the prior art, the silicon oil fan clutch of the invention has the advantages of high precision, quick response and wide range of temperature control.

The invention provides a quartz glass tube rod production furnace and a quartz glass tube rod production method. The quartz glass tube rod production furnace comprises a quartz smelting furnace, a base metal fixing assembly, a receiving mechanism and a central positioning system, wherein a lifting device is mounted above the quartz smelting furnace; the base metal fixing assembly can be installed on the lifting device after being connected with the quartz base metal so as to hoist the quartz base metal above the quartz smelting furnace, and the base metal fixing assembly comprises a replaceable connecting piece which can be replaced according to the specification of the quartz base metal to be connected; the receiving mechanism is positioned below the quartz smelting furnace and is used for receiving the quartz glass tube rod output by the quartz smelting furnace and slowly pulling out the quartz glass tube rod at a constant speed; and the central positioning system is arranged below the quartz smelting furnace and is used for positioning the formed quartz glass tube rod. According to the structure, the production of various types of quartz glass tube rods can be realized by replacing the replaceable connecting piece. The quartz base material is not in contact with the crucible, so that the quartz smelting furnace can realize discontinuous and small-batch production, and the purity and the performance of the quartz glass tube rod are improved.

The invention provides a battery module, and a battery pack thermal management device and system, the battery module comprises: a plurality of battery packs, each battery pack comprising a plurality of battery cell units arranged in a staggered or parallel manner; the packaging structure comprises a shell assembly, and the shell assembly is used for packaging the battery pack in the axial direction of the battery pack; the heat conduction piece is arranged between the battery packs and comprises side faces and end faces, the side faces make contact with the outer walls of the battery packs, and the end faces are exposed out of the packaging structure and make contact with the outside, so that the battery packs conduct heat exchange with the outside through the heat conduction piece; wherein the heat conduction piece is of a hollow heat conduction structure in which a phase change material is packaged. The heat conduction piece in the battery module exchanges heat with the cooling device outside the battery module by packaging the phase change material, so that the heat conduction piece is isolated from an external heat transfer medium, the flow resistance of a main loop water channel can be effectively reduced, and meanwhile, the probability of potential safety hazards caused by flow leakage of the heat transfer medium is reduced.

The invention discloses a phase-change material and metal micro-expansion-based dual-drive space thermal switch for a spacecraft. The dual-drive space thermal switch comprises a heat sink plate, a phase-change material storage shell, a phase-change material, a storage shell cover plate and a support shell, the heat sink plate is installed at the lower end of the supporting shell, the upper end ofthe phase-change material storage shell is connected with the upper end of the supporting shell, and the lower end of the phase-change material storage shell is located in the supporting shell. The phase-change material is positioned in the phase-change material storage shell; the storage shell cover plate is hermetically mounted on an opening in the upper end of the phase-change material storageshell and is sealed; the outer diameter below the upper end of the phase-change material storage shell is smaller than the inner diameter of the supporting shell; the phase-change material storage shell is filled with the phase-change material; the lower end of the heat sink plate is tightly attached to the inner side end of a heat dissipation panel of the spacecraft spaceborne instrument; and thephase-change material storage shell and the storage shell cover plate are tightly attached to the outer side hot end face of a heating device in the spacecraft spaceborne instrument. According to theinvention, the problem of insufficient driving force in the existing equipment is effectively solved, and higher thermal conductivity when the thermal switch is switched on and lower thermal conductivity when the thermal switch is switched off can be ensured.

A three-speed temperature controlled power switch comprises a moderate-temperature bimetallic strip, a high-temperature bimetallic strip, a first push rod, a second push rod, a first movable contact piece, a second movable contact piece, fixed contact pieces and conducting strips, wherein a first ladder stand and a second ladder stand, which are arranged at the bottom of the inner chamber of a sensor housing from the bottom up, are used for placing the bimetallic strips; the high-temperature bimetallic strip and the moderate-temperature bimetallic strip are similar in structure; the round disc-shaped moderate-temperature bimetallic strip comprises a first active metal layer and a first passive metal layer which are in tight connection and in double-layer structures; and the upper end surface of the first active metal layer and the lower end surface of the first passive metal layer are cambered surfaces where the first active metal layer sinks toward the first passive metal layer. The three-speed temperature controlled power switch provided by the invention can ensure that the temperature sensitive metal pieces can deform timely and quickly, and the deformation can be accurately transmitted to a switch contact, thereby controlling of the connection and disconnection of a contact connection circuit.

The invention provides a small ring control device for onboard alignment stabilizing. The small ring control device mainly comprises a thermoelectric refrigeration module, a fan, a liquid refrigeration module, fin-type radiating fins and a temperature control system. The thermoelectric refrigeration module is tightly attached to a sealed spherical shell. A refrigeration face surrounds a light-emitting source inside the shell. Waste heat of the light-emitting source is transmitted to the fin-type radiating fins outside the shell through a radiating box and a metal shell body, and finally radiation is accelerated through strong gas flow generated by a carrier; a plurality of S-shaped gasification pipelines are arranged inside the radiating box, a light-emitting face of the thermoelectric refrigeration module is evenly cooled when low-temperature liquid flows, and the environment inside the shell can be cooled through low-temperature gas generated at the tail end; the fan can enhance the thermal conductivity of a heat exchange region; the temperature control system can automatically adjust the power and the working mode of a secondary refrigerator according to the actual temperature of the heat source inside the shell. Compared with traditional fan ring control, the small ring control device has the advantages of being wide in temperature control range and high in initiative. Compared with a mechanical ring control system, the small ring control device has the advantages of being small in size, simple in structure and high in reliability.

The invention provides a multifunctional continuous online gas preparation and introduction device which comprises a sample table unit, a rotating unit and a plurality of sample introduction units; the sample table unit comprises a sample disc, a water storage ring and a sample disc cover, a plurality of blind holes are formed in the upper part of the sample disc, the water storage ring is locatedin the sample disc, and the sample disc cover sleeves the outer side of the sample disc; the rotating unit is located above the sample disc and comprises an electric rotating table and an annular guide rail, the electric rotating table is fixed to the middle of the sample disc, the annular guide rail is installed above the electric rotating table, and at least one sliding block is arranged on theannular guide rail; each sample injection unit comprises a screw rod sliding table, a driving motor and a needle head, the screw rod sliding table is installed on the sliding block, the driving motoris connected with the guide rail sliding block, and the needle head is fixed to the outer side of the guide rail sliding block through a needle head clamping groove. The device has the beneficial effects that gas preparation and introduction are carried out in a rotating mode, multiple pretreatment operations can be carried out on multiple sample bottles at the same time, and thedevice is particularly suitable for experimental analysis needing a complex pretreatment sample injection mode.

The invention relates to the technical field of alloy manufacturing, in particular to a preparation method of a NiMnGaCoCu memory alloy thin strip. The method comprises the steps: (1) melting, specifically, pure Ni, Mn, Ga, Co and Cu metal raw materials are selected and placed in a copper mold with a water cooling device in a vacuum smelting furnace, and after vacuumizing, the copper mold is filled with inert gas, then the metal raw materials are overturned and smelted under the protection of the inert gas, and full cooling is carried out on a stirred uniform alloy solution in the water cooling copper mold to obtain a NiMnGaCoCu alloy ingot; (2) first heat treatment; (3) rapid quenching, specifically, the heat-treated NiMnGaCoCu alloy ingot in a melting belt throwing furnace with the rotating speed of 10 m / s-30 m / s is rapidly quenched to prepare an alloy thin strip; and (4) secondary heat treatment is performed on the alloy thin strip to obtain the NiMnGaCoCu memory alloy thin strip. The prepared memory alloy thin strip has the characteristics of high toughness, ordered columnar grain arrangement and adjustable lattice torsion resistance.

A three-speed temperature controlled power switch comprises a moderate-temperature bimetallic strip, a high-temperature bimetallic strip, a first push rod, a second push rod, a first movable contact piece, a second movable contact piece, fixed contact pieces and conducting strips, wherein a first ladder stand and a second ladder stand, which are arranged at the bottom of the inner chamber of a sensor housing from the bottom up, are used for placing the bimetallic strips; the high-temperature bimetallic strip and the moderate-temperature bimetallic strip are similar in structure; the round disc-shaped moderate-temperature bimetallic strip comprises a first active metal layer and a first passive metal layer which are in tight connection and in double-layer structures; and the upper end surface of the first active metal layer and the lower end surface of the first passive metal layer are cambered surfaces where the first active metal layer sinks toward the first passive metal layer. The three-speed temperature controlled power switch provided by the invention can ensure that the temperature sensitive metal pieces can deform timely and quickly, and the deformation can be accurately transmitted to a switch contact, thereby controlling of the connection and disconnection of a contact connection circuit.

The invention provides a miniature test clamp used for a disk laser device for controlling shell temperature. The miniature test clamp comprises a set of double-row fourteen-pin disk laser device clamps, a standard thermistor, a thermoelectric refrigerating device, a thermal conducting copper block, a thermal insulation gasket, a DB25 pin interface, a red and green LED indicating lamp and a set of control circuit board. The device is compact in structure and small in size, shell temperature of the laser device can be accurately controlled and temperature control range exceeds that of a conventional water cooling device. Meanwhile, conventional welding of LD pins is substituted by pressing of the LD pins so that the power-up process of the laser device is simplified, and the risk of damage to the laser device caused by welding can be reduced. Besides, great protection measures can be taken on the disk laser device under temperature control by the device so that an emergency protection function performed on the disk laser device under measurement for power-up misoperation of the disk laser device under measurement and out of control of a temperature control system when shell temperature does not reach the set temperature can be avoided.

The invention belongs to the technical field of mechanical temperature controllers, and particularly relates to an anti-explosion temperature controller used for controlling a dangerous area heat tracing system. Sealing members are arranged at the connecting positions so that the sealing performance of the anti-explosion temperature controller can be effectively guaranteed. When set flammable and explosive gas or steam explodes in a shell, a base is not damaged and the explosive material is not spread so that the anti-explosion temperature controller has great anti-explosion performance. Temperature is monitored in real time through an induction bulb probe. When temperature rises, silicone oil in the induction bulb probe thermally deforms and expands and silicone oil in a stainless steel pipe also thermally expands so as to push a push rod to be close to a stroke switch and the circuit is connected. When temperature drops, silicone oil in the induction bulb probe coldly deforms and contracts to drive the push rod to be away from the stroke switch, and the circuit is disconnected and the objective of constant temperature is achieved. The method is stable and reliable, low in on-off temperature difference, high in temperature control adjustment range, high in overload current, high in adjustment precision, sensitive in switching motion and long in the service life.

The invention relates to the technical field of alloy manufacturing, in particular to a preparation method of a NiMnGaCoCu memory alloy thin strip. The method comprises the steps: (1) melting, specifically, pure Ni, Mn, Ga, Co and Cu metal raw materials are selected and placed in a copper mold with a water cooling device in a vacuum smelting furnace, and after vacuumizing, the copper mold is filled with inert gas, then the metal raw materials are overturned and smelted under the protection of the inert gas, and full cooling is carried out on a stirred uniform alloy solution in the water cooling copper mold to obtain a NiMnGaCoCu alloy ingot; (2) first heat treatment; (3) rapid quenching, specifically, the heat-treated NiMnGaCoCu alloy ingot in a melting belt throwing furnace with the rotating speed of 10 m / s-30 m / s is rapidly quenched to prepare an alloy thin strip; and (4) secondary heat treatment is performed on the alloy thin strip to obtain the NiMnGaCoCu memory alloy thin strip. The prepared memory alloy thin strip has the characteristics of high toughness, ordered columnar grain arrangement and adjustable lattice torsion resistance.

The invention discloses an arrangement structure of an electric heating plate, which comprises a heating plate, and a plurality of rows of first S-shaped grooves are formed in the back surface of theheating plate in an array manner; an S-shaped right-angle wire column heating pipe is mounted in each first S-shaped groove; a cast aluminum gland is fixed on the top surface of each first S-shaped groove through a screw; the cast aluminum gland is provided with a second S-shaped groove opposite to the first S-shaped groove; the S-shaped right-angle wire column heating pipe is clamped in a cavityformed by the first S-shaped groove and the second S-shaped groove; two open grooves are formed in one side of the cast aluminum gland; the two ends of the S-shaped right-angle wire column heating pipe are led out from the open grooves; the arrangement mode of the electric heating plate specifically comprises the following steps that firstly, the heating plate is arranged, and secondly, the cast aluminum gland is arranged; thirdly, the S-shaped right-angle wire column heating pipe is installed; and finally, a temperature control system is arranged. According to the arrangement structure of theelectric heating plate, the manufacturing cost of equipment is reduced, the manufacturing, mounting and overhauling processes are simplified, and the temperature control precision is improved.

The invention discloses an accelerating and loading device for an indoor test of road surface materials. The accelerating and loading device comprises a thermostat, an operating desk, a tire, a motor, a transmission belt, a revolution indicator, a water pump, a water tank, a sprinkler head, a temperature sensor, a circulating air inlet, a circulating air outlet, a noise detector, a hydraulic device, a test specimen fastening module, a tension-compression type sensor, a self-lifting type testing wheel, a support wheel, a laser constructor and a computer, wherein the thermostat is positioned at the left side of a test device, the operating desk is positioned at the right lower side of the outer wall of the test device, the tire is positioned at the upper side of the thermostat, and the operating desk comprises a master switch, a rapid stop key, an accelerating operating desk, a loading operating desk, a temperature-control operating desk, a noise display, a water pump switch, a water pump operating knob and a motor switch. The accelerating and loading device for the indoor test of road surface materials is simple, applicable and reliable in operation, and can accurately simulate and detect the noise conditions, the anti-slide properties of test specimens and the mass loss rates of the test specimens of different road surface materials in environments of different temperatures, under different slippery degrees and under different loading effects.

The invention discloses a wide-range temperature adjustment and pH value measurement device, and the device comprises a temperature control device, a detection device and a pipe. The temperature control device comprises a water bath circulation pool, a water bath heating block, an electric heating film, a cooling sheet and a heat sink, wherein the water bath heating block is disposed at the bottomof the water bath circulation pool, and the electric heating film is disposed at the side of a pool wall of the water bath circulation pool. The cooling sheet is disposed at the other side of the pool wall of the water bath circulation pool, and is opposite to the electric heating film. The heat sink is disposed on an outer side wall of the bottom of the water bath circulation pool. The detectiondevice comprises a temperature control pool, a detection pool, a temperature sensor and a pH-value sensor, wherein the detection pool is disposed in a temperature control tank, and the temperature sensor is disposed on the pool wall of the temperature control pool. The pH-value sensor is inserted into the to-be-tested liquid in the detection pool, and the temperature control tank is connected with the water bath circulation pool through the pipe. The device has a wide temperature control range, saves energy, is environmentally friendly, and is suitable for popularization and application.

The invention provides a multifunctional continuous online gas preparation and introduction device, which includes a sample stage unit, a rotating unit and several sample injection units. The sample stage unit includes a sample plate, a water storage ring and a sample plate cover, and several blind holes are arranged above the sample plate. , the water storage ring is located inside the sample tray, and the sample tray cover is set outside the sample tray; the rotation unit is located above the sample tray, and it includes an electric rotary table and a circular guide rail, the electric rotary table is fixed in the middle of the sample tray, and the circular guide rail is installed on the electric rotary table above, and at least one slider is provided on the circular guide rail; each sampling unit includes a screw slide, a drive motor and a needle, the screw slide is installed on the slide, the drive motor is connected to the slide of the guide rail, and the needle passes through the needle card The groove is fixed on the outside of the rail slider. Beneficial effects of the present invention: gas preparation and introduction are carried out in a rotating manner, and various pretreatment operations can be performed on multiple sample bottles at the same time, which is especially suitable for experimental analysis requiring complicated pretreatment and sample injection methods.

The invention relates to a silicon oil fan clutch, comprising a shell, an oil storage cover, a front cover, a main drive shaft and a main drive plate arranged on the main drive shaft, wherein, the front cover is connected with the shell in a sealing way, the oil storage cover is arranged at the front end of the front cover and forms an oil storage cavity with the front cover, and the main drive plate, the front cover and the shell form a gearing cavity; besides, the front cover is provided with an oil outlet channel; an oil inlet end arranged at the oil outlet channel is provided with a valveplate which is arranged at the end surface of the front cover by an elastic work piece, and the valve plate can open the oil outlet channel as force is imposed upon the valve plate by the elastic work piece; the middle part of the front cover is provided with a through hole, a guide tube end is arranged in the through hole by a guide tube bearing, a thimble is arranged in the guide tube end and pushes against the valve plate, and a guide tube joint is externally connected with a fluid source controlled by an engine control unit. Compared with the prior art, the silicon oil fan clutch of the invention has the advantages of high precision, quick response and wide range of temperature control.

Sulfur vapor corrosion chambers and sulfur vapor corrosion test methods are disclosed. The sulfur vapor corrosion box includes: a test box part, including a partition, with a gap provided on the partition for placing the tested sample; a sulfur vapor generation part, which is placed below the partition and passes through the partition. The partition is separated from the test box part for generating sulfur vapor, and the sulfur vapor enters the test box part through the gap on the partition; and a parameter control part for individually controlling the generated sulfur vapor. Parameters of sulfur vapor within the test chamber section.