704results about How to "Good sealing effect" patented technology

The invention provides a target type fiber grating liquid flowmeter comprising a shell and a connecting bar, wherein the connecting bar is arranged in the shell, and a flow blocking target is arranged at the end of the connecting bar. The target type fiber grating liquid flowmeter is characterized in that a fiber grating is arranged at the other end of the connecting bar, and the connecting bar is fixed in the shell through a shaft seal sheet. Because the fiber grating has high sensitivity and good insulation performance and anti-interference performance, the target type fiber grating liquid flowmeter can safely measure the flow capacity of inflammable and explosive dangerous liquid in oil delivery pipes, chemical liquid delivery pipes and the like. In addition, since the shaft seal sheet is used for sealing, the sealing effect is more excellent, and the corrosion of the liquid to each element inside the flowmeter is greatly reduced, thereby improving the measurement accuracy. The target type fiber grating liquid flowmeter is really an ideal liquid flowmeter.

The invention discloses a high-temperature high-pressure resistant non-oil lubricant sealing ring used in compressor. Wherein, the sealing ring is made from (mass percentage): polytetrafluoroethylene in 60-80%; carbon fiber in 6-22%; and filling agent in 5-35%; while the filling agent can be one or several of graphite, glass fiber, molybdenum disulfide and copper powder. The treatment comprises: at normal temperature: selecting raw material - mixing materials - checking - molding pressing - sintering - cooling, contracting and shaping - mechanically processing, to attain sealing ring. The invention has the advantages that: it is resistant to high pressure and high temperature, with long service life, better sealing effect and the application for variable working conditions.

The invention discloses a depressurized extraction method for cutting through a roof or a floor of a coal seam by an abrasive water jet, which comprises the following steps: a. drilling a bedding drill hole to set depth on the roof or the floor of a coal-rock mass or a hard layer by using a drilling machine through a drill stem and a slotting drill bit; b. delivering a high-pressure abrasive water jet of which the pressure is 25-30MPa to the slotting drill bit through the drill stem, wherein the drill stem rotates in situ; forming a radial slit on the hole wall of the bedding drill hole, wherein the slit penetrates the roof or the floor of the coal-rock mass or the hard layer and a soft layer; c. enabling the drill stem to rapidly retreat for 1.5-3m so as to form a new slit; d. repeating the step c until a plurality of radial slits are formed on the bedding drill hole, and moreover, reserving a safety rock pillar of at least 5m at the slit located at the position of the orifice of the bedding drill hole at a certain distance from the orifice; e. retreating the drill stem and the slotting drill bit and sealing the hole; and f. extracting gas by a gas extraction system. The depressurized extraction method for cutting through the roof or the floor of the coal seam by the abrasive water jet has the beneficial effects that the drill hole does not have potential safety hazards and is easy to form; a hole sealing effect is good; the time of reaching the standards of extraction is short; the production efficiency is high; and the extraction is safe.

The invention relates to a method for sealing holes of micro arc oxidation film at room temperature. Solution prepared with sodium silicate, nickel salt, solvent and accelerant is adopted as a sealant, after stewing for at least 2 hours, the sealant is adopted to seal the holes of micro arc oxidation film by soaking at room temperature, after sealing holes, the sealant forms an adsorption crystal packing in micro holes on the surface of the micro arc oxidation film so as to achieve hole sealing. The solvent is deionized water, and the ratio of sodium silicate, nickel salt and accelerant is as follows: 5-15 g / L of sodium silicate, 2-8 g / L of nickel salt and 0.1-2 g / L of accelerant. The sodium silicate is sodium metasilicate pentahydrate or sodium metasilicate. The nickel salt is nickel fluoride, nickel acetate or the mixture of the two. The accelerant is boric acid, thiourea, zirconium potassium fluoride or the mixture thereof. The solution of sealant provided by the invention can be used without heating, and the hole sealing can be performed at room temperature, which is easy and simple and has good hole sealing effect without any effect to the hardness of ceramic membrane. Meanwhile, the corrosion resistance of ceramic membrane can be improved.

The invention relates to an air spring environment simulation fatigue testing machine, comprising a frame, a box body component, a mechanical transmission device, a counterweight device, a hoisting disc and a transmission shaft; the box body component consists of a box body and a box door with heat preservation function; the mechanical transmission device is arranged on the frame and is positioned outside the box body; the motor of the mechanical transmission device is connected with a rotation disc by a reducer; the swing shaft which is arranged on the rotation disc is connected with a sliding block which is arranged in the guide trough of a swing rod; one end of the swing rod is articulated on the supporter of the swing rod; the transmission shaft with a tray is arranged inside the box body; the transmission shaft passes through the box body and is articulated with the other end of the swing rod; the hoisting disc is connected inside the box body and is corresponding to the transmission shaft; the counterweight bracket of the counterweight device is fixed on the top inside the box body; two disc bodies are coaxially arranged on the counterweight bracket; two ends of the steel cables which are arranged in two disc body ring-shaped trough are respectively connected on the counterweight block and the transmission shaft. The air spring environment simulation fatigue testing machine has reasonable structure, does not affect the actuating unit and the transmission mechanism of the testing machine or the service life of the transmission mechanism, and has the advantages of convenient operation and low energy loss.

The invention discloses an inside door gasket for a refrigerator. The refrigerator comprises a box body of which the front side is open, and a door body for opening or closing the box body; and the refrigerator is characterized in that: the inside door gasket extends along left and right directions of the door body, and comprises a first airbag, a second airbag and a fixed foot, wherein the first airbag is suitable to be contacted with a front side frame of the box body; the second airbag is arranged below the first airbag and is communicated with the first airbag through an air vent; an air exhaust is formed in the second airbag to exhaust air outside; and the fixed foot is connected to the lower part of the second airbag and is suitable to be fixed on the door body. According to the inside door gasket in the refrigerator, the first airbag can be tightly attached to the front side frame of the box body, so that the sealing property of the refrigerator is improved, cold quantity is prevented from escaping, and an energy-saving effect is good. The invention also discloses a refrigerator with the inside door gasket.

The invention relates to a full-automatic wrapping vacuum packaging machine, comprising a conveying mechanism for substances to be packaged, an adhesive film distribution mechanism, a vacuum treatment mechanism and a finished-product output mechanism, wherein the conveying mechanism for the substances to be packaged comprises an emptying area A and an emptying area B; the adhesive film distribution mechanism is arranged between the emptying area A and the emptying area B, and comprises an upper packaging and distributing mechanism, a lower packaging and distributing mechanism and a sealing-cutting mechanism; the sealing-cutting mechanism comprises an upper sealing-cutting die and a lower sealing-cutting die which are driven by a power mechanism, and the upper sealing-cutting die is combined with the lower sealing-cutting die for cutting off and binding an upper adhesive film and a lower adhesive film which are used for coating the substances to be packaged; and the vacuum treatment mechanism comprises a conveying belt and a heating and binding mechanism. The vacuum packaging machine provided by the invention can perform vacuum package by utilizing at least three methods, thus the vacuum packaging machine can be used in diversified modes, and the scope of application is quite wide.

The invention relates to a temperature controlling base for testing semi-conductive illuminant device, which is provided with temperature controlling function and avoids condensation of moisture. The invention comprises a temperature controlling device and a seal closure which is matched with the temperature controlling device, wherein testing specimens can be arranged into the seal closure and matched with the temperature controlling device. The distinguishing progresses of the invention are that the testing specimens is located in a comparative constant temperature status through an arrangement of the temperature controlling device, testing results are accurate, the testing specimens are separated form around circumstance through the arrangement of the seal closure, thereby effects of the around circumstance can be avoided, sealing effects of the seal closure is better through the arrangement of seal components, the arrangement of an extraction opening enables that a vacuum machine is connected with the seal closure through the extraction opening, air inside the seal closure can be extracted, vapor can be decreased, the vapor can be avoided to condense on the testing specimens.

The invention discloses a high temperature and high pressure sealing window used for a constant volume combustion bomb. The high temperature and high pressure sealing window used for the constant volume combustion bomb comprises a flange end cover, wherein the external side of the flange end cover is provided with an external boss; the flange end cover and a constant volume combustion bomb body are fixed through installing bolts; glass is arranged inside the flange end cover; the external side of the glass is axially limited through a first sealing step surface which is arranged inside the flange end cover; the first sealing step surface is provided with a groove which is provided with an O type ring; the inner side of the glass is axially limited through a blocking ring which is fixed on a second sealing step surface which is arranged inside the flange end cover through countersunk bolts to compress the glass; and a graphite gasket is arranged between the blocking ring and the glass. According to the high temperature and high pressure sealing window used for the constant volume combustion bomb, the sealing is performed on the flange end cover and the constant volume combustion bomb body after the glass and the flange end cover are arranged into a whole, the glass is one-time installed, and frequent detachment is not needed, so that the problems that the sealing fails and the glass is easy to crush are solved. The gas expansion pressure inside a chamber enables pre-tightening force for compressing the glass to be enhanced to achieve the effect of self-tight sealing, so that the sealing of the high temperature and high pressure gas of the constant volume combustion bomb is achieved.

The invention discloses an anti-aging sealant and a preparation method thereof. The sealant comprises the following components in parts by weight: 20-30 parts of coumarone indene resin, 5-10 parts of polysulfide rubber, 5-10 parts of nitrile-butadiene rubber, 8-15 parts of tert-butyl phenol-formaldehyde resin, 3-7 parts of silicon dioxide, 2-6 parts of chlorosulfonated polyethylene, 2-7 parts of butyl acrylate, 1-5 parts of aluminum powder, 3-7 parts of sodium metasilicate, 2-8 parts of phosphate, 1-4 parts of triethanolamine, 1-5 parts of boron nitride, 0.5-2 parts of paraffin, 1-3 parts of 2,4-dihydroxy benzophenone and 0.8-3 parts of butyl p-hydroxy benzoate. The preparation method comprises the following steps: adding the components into a reaction kettle, uniformly mixing, heating to 120-140 DEG C under vacuum conditions, stirring to react for 120-180 minutes, and cooling to room temperature. The sealant disclosed by the invention has the advantages of favorable aging resistance and excellent adhesive property, and is more suitable for the field of solar energy.

A sealing method for a high pressure shaping allotype section in a tubular product and a sealing formed punch relate to a sealing method for the shaping of a tubular product and a sealing formed punch. The invention solves the problems of die and tubular product wasts caused by the fact that transition sections are respectively needed to be obligated at two ends of a tube blank to be processed and are needed to be treated into a round section which is used for the sealing during the high pressure shaping in the existing allotype section component. The method of the invention comprises the steps: the section of the end part of the tube blank is pre-formed; then the tube blank is put into a lower die and an upper die is closed; sealing two ends of the tube blank are sealed directly by the sealing formed punch and filled in liquid; the tube blank is put on pressure; and the needed workpiece is instantly formed after pressure relief. The rectifying section (2), the sealing section (3) and the sealing connecting rod (4) of the sealing formed punch are fixedly connected to form a body from pro to post; the front end of the rectifying section (2) is provided with a transition round angle (1). The method of the invention has the advantages of good sealing effect and saving the tube blank material, etc. The sealing formed punch of allotype section of the invention has the advantages of the flexible and free section forms, the good commonality and the energy conservation.

A closure plug for closing an opening has an annular sealing section which is provided to rest against an edge of the opening, and an expansion section which is formed in one piece with the sealing section and can be adjusted from a mounting position, in which the sealing section has a mounting diameter at least at one axial end, to an expansion position, in which the sealing section has a larger diameter.

The invention provides a method for sintering a polytetrafluoroethylene sealing ring. The invention employs a sintering furnace which comprises a sintering furnace body, a nitrogen conveying device and a program control device. The sintering furnace body comprises four zones such as a drying zone (2), a preheating zone (3), a sintering zone (4) and a cooling zone (5). The method comprises the following steps: (1) preparing polytetrafluoroethylene stock;(2)drying polytetrafluoroethylene stock in the drying zone; (3) preheating stock in the preheating zone; (4) sintering stock in sintering zone; (5)cooling. According to the invention, the sintering sealing effect and automatic control can be enhanced for effectively inhibiting the escape of hydrogen fluoride during the sintering process, metal powder modified materials filled in polytetrafluoroethylene is avoided an oxidation generated by contacting with air in a high temperature through a heat nitrogen cycle, thereby the usage performance and the appearance of the products can be improved.

The invention discloses an anti-explosion marker lamp. The anti-explosion marker lamp comprises a lamp body and a light-emitting screen component fixed on one side of the lamp body, wherein a switch box is arranged in the lamp body; a power supply circuit for driving to light the light-emitting screen component is arranged in the switch box; the switch box adopts encapsulating package; a switching part is also arranged in the switch box; the lamp body is provided with a button which can drive the switching part; when the button is pressed, the switching part switches off the power supply circuit; and when the button is released, the switching part switches on the power supply circuit. In the anti-explosion marker lamp, the switch box adopts the encapsulating package and a sealing effect is good, so the interior of the anti-explosion marker lamp meets a safety-increased requirement and a safety-increased structure has the characteristics of easy manufacturing and lower cost compared with an anti-explosion structure with high difficult in the prior art. Simultaneously, the switching part which can perform emergency test on the anti-explosion marker lamp is arranged in the switch boxon the premise of meeting the safety-increased requirement, so as to prevent sparkle generated when testing from fleeing outwards and bring convenience to the test of the anti-explosion marker lamp; therefore, the anti-explosion marker lamp can be used more safely and reliably.

The invention relates to a method for testing the permeability resistance of concrete, and belongs to the field of tests. The method is characterized by comprising the following steps of: a, heating a test mold for concrete permeability resistance test to 65-70 DEG C in an oven; b, carrying out roll coating of hot wax on the periphery of a test block; c, quickly putting the wax coated test block into the test mold, wherein the diameter of the top of the test mold is greater than that of the bottom of the test mold; d, tightening an ejection device to press the test block into the test mold, and implementing wax sealing between the test block and the test mold; e, fixing the test mold filled with the test block on a tester platform by using bolts; f, opening a pressure water valve to pressurize the test block, and performing permeability resistance test; g, keeping the water pressure unchangeable after the test is completed, loosening screw caps of the ejection device by using a spanner, and extruding the test block out from the test mold by virtue of pressure water; and h, closing the pressure water valve, detaching the fixing bolts between the test mold and the tester platform, taking the test mold out, and thus completing the test.

The invention discloses a sealed and watertight method between a box body and a pile body; the waterproof method is used for sealing and watertightness between the pile body and the box body. The invention is characterized in that: with the method, an annular airbag is arranged in a gap between the box body and the pile body; further an annular airbag groove is made on the pile hole sidewall of the soleplate of the box body; when the annular airbag is placed, the annular airbag is put in the annular airbag groove; the watertight method of the invention is simple in operation, reliable in watertightness and suitable for watertightness under various environmental conditions; in particular the invention adopts the technical proposal, no matter how partial difference between the positions of the pile body and the hole, the airbag can realize the complete watertightness as the own property of the airbag; therefore, underwater construction can be carried out without needing divers, thereby greatly shorting the construction period, improving the quality and safety of the construction, saving the construction cost and avoiding the pollution to a construction water area.

The invention relates to a wave-power unit for the production of electric power. It comprises a floating body (1) arranged for floating on the sea and an electric linear generator (2) having a stator (5) and a translator (8) reciprocating along a center axis. The stator (5) is arranged to be anchored in the bed of the sea and the translator (8) is connected to the floating body (1) by connection means (3, 7). According to the invention the generator (2) is enclosed in a water-tight encapsulation (4) having an upper end wall with an opening through which the connection means (7) extends. The opening has a seal (12) that seals against the connection means (7). The seal (12) is flexibly mounted. The invention also relates to the use of the wave-power unit and to a method for producing electric power.

Disclosed in the invention is a novel sealed constant-temperature double-load waveguide calorimeter comprising a sealed cylinder, a sealed cylinder cover, a working link, a reference link, a waveguide port, and a thermopile. The working link and the reference link are sealed by sealing rings of the sealed cylinder cover; and the 2-mm standard waveguide port is formed in the sealed cylinder cover at one side of the working link according to the waveguide dimension and is used for inputting a 2-mm-frequency waveguide. The reference link is used for providing a temperature reference for the working link and the working link is used for inputting a direct-current power and a microwave power, thereby changing a thermoelectric force of the thermopile with the temperature change. According to the temperature value of the reference link, a temperature difference thermoelectric force is obtained; and then a microwave power value is obtained by calculation. According to the technical scheme, with the double-load calorimetric technology, the temperature control on the calorimeter is realized by a constant-temperature water tank; and the 2-mm calorimetric power standard is set and the power level is 1mW. A valuation transfer demand of a power parameter in a frequency range of 110GHz to 170GHz can be satisfied.

The invention discloses a novel flue check valve which comprises an installing pipe, a circular base and a smokeproof cover plate. A fixing plate is arranged on the outer wall of the installing pipe, and the circular base is arranged in the inner cavity of the installing pipe. The sealing end surface of the circular base is slantwise arranged relatively to the axial plane of the installing pipe. The upper end of the smokeproof cover plate is rotationally connected with the upper end of the circular base through an articulated mechanism. Magnetic drawing devices are arranged on the smokeproof cover plate and the circular base. Cover plates are respectively arranged on the smokeproof cover plate and the circular base, and cover the magnetic attracting devices. A sealing cushion is arranged on the sealing contact surface between the smokeproof cover plate and the circular base. The novel flue check valve has the advantages of reasonable design, simple structure, good sealing effect, smooth gas exhaust, long service life, multiple functions and wide application, is particularly suitable for down-draught prevention of public flues of multi-floor or high-floor buildings, is favorable for environment protection, and has good economic benefit.

The invention discloses a design method of a double-curtain system used for preventing leakage of an oil and gas storage cavern. The design method comprises the following steps that first, detailed geological investigation data in a storage cavern area are obtained; second, a water curtain roadway is arranged above the storage carven; third, a plurality of water curtain holes are formed in the side wall of the water curtain roadway and comprise the horizontal water curtain holes or / and the vertical water curtain holes, the horizontal water curtain holes extend to the upper portion of the storage cavern from the water curtain roadway, and the vertical water curtain holes extend to the outer side of the storage cavern from the water curtain roadway; and fourth, the permeable rate of rock layers on the periphery of the storage cavern can be obtained by conducting packer tests through the water curtain holes, when the permeable rate of any area of the rock layers is larger than a preset permeable rate, a plurality of grouting holes extending between the water curtain holes and the storage cavern are formed in the peripheral wall of the water curtain roadway near the corresponding area to conduct grouting, and a seepage prevention curtain is formed. According to the design method, cracks in surrounding rock can be effectively closed, and oil and gas stored in the storage cavern are prevented from being leaked.

A single-cable-replaceable type anchorage pre-stressed anchor device comprises a pull rod, a front protection cover, a rear protection cover, anchor gear assemblies, a connector, a pull rod nut assembly, a front anchor backing plate, a rear anchor backing plate, spiral ribs, an embedded pipe and unbonded PF steel strands. The connector is installed on the front anchor backing plate. The front anchor gear assembly is installed on the end face of the connector, and the rear anchor gear assembly is placed under the rear anchor backing plate. The two ends of each unbonded PF steel strand are removed, the remaining part of each unbonded PF steel strand is wrapped by PE, the exposed parts of the upper ends of the unbonded PF steel strands are located in a sealed cavity formed by an anchor plate of the front anchor gear assembly and the front protection cover and anchored to the anchor plate through working clamping pieces, and the exposed parts of the lower ends of the unbonded PF steel strands are located in a sealed cavity formed by an anchor plate of the rear anchor gear assembly and the rear protection cover and anchored to the anchor plate through working clamping pieces. By pressing and ejecting inner sealing plates and outer sealing plates through screw rods and ejector rods, the diameter of through holes in the inner sealing plate and through holes in the outer sealing plate can be adjusted. A sealed cavity of the front anchor gear assembly, a sealed cavity of the rear anchor gear assembly, the sealed formed by the front protection plate and the anchor plate of the front anchor gear assembly and the sealed cavity formed by the rear protection plate and the anchor plate of the rear anchor gear assembly are filled with non-drying anticorrosive materials. The anchor device is reliable in use and low in cost, and installation construction and cable replacement construction are convenient.

The invention relates to a precision anti-blocking liquid fertilizing gun. The fertilization gun comprises a switch combination, a liquid measuring barrel, a gun bar and a gun head, wherein the liquid measuring barrel, the gun bar and the gun head are communicated in sequence. A distribution chamber, which is divided into an upper chamber and a lower chamber by a water discharging plunger piston, is disposed in the upper part of the liquid measuring barrel. The upper chamber is provided with a fertilizing amount adjusting device. The side wall of the distribution chamber is provided with a general water inlet pipe, and a lower-chamber water inlet pipe communicated with the lower chamber. The general water inlet pipe is communicated with the upper chamber through an upper-chamber water inlet pipe. A controlling plunger piston, the top of which is connected to the switch combination through a connecting rod, is disposed in the distribution chamber. The side of the gun head is provided with a water outlet. An anti-blocking plunger piston, which is connected with the controlling plunger piston through an anti-blocking connecting rod, is disposed inside the gun head. When the switch combination is normally opened and is not working, the controlling plunger piston is at the bottom of the distribution chamber, the lower-chamber water inlet pipe is communicated, the upper chamber and the lower chamber are in a pressure balance, the water discharging plunger piston is at the highest position and the anti-blocking plunger piston closes the water outlet. When the switch combination is closed and fertilization is performed, the lower-chamber water inlet pipe is closed by the controlling plunger piston, the pressure in the upper chamber is larger than the pressure in the lower chamber, the water discharging plunger piston is moving downward, the anti-blocking plunger piston is moving upward and the water outlet is opened.

The invention relates to a bagged cement automatic bag-opening and discharging device for a nuclear power station. The bagged cement automatic bag-opening and discharging device for the nuclear power station comprises a sealing box, a conveying mechanism, a controller and a starting button. The bagged cement automatic bag-opening and discharging device for the nuclear power station is characterized by comprising a vertical lifting door, a cement bag recycling door and a cement exit. A cutting knife is fixed on the inner surface of the vertical lifting door, and the vertical lifting door is driven by a dynamic mechanism. An unpowered roller way and a belt conveying machine are respectively arranged inside and outside the vertical lifting door, and a guide rail is arranged on the upper portion of an outer shell. A motor can move on the guide rail through that a steel wire rope drags a bag-grabbing mechanism. A fine dust collecting machine is arranged on the top of the outer shell, signal input ends of the controller are respectively connected with signal output ends of a photoelectric sensor, a limiting switch and the starting button. Output ends of the controller are respectively connected with control ends of the belt conveying machine, the dynamic mechanism and the motor. The bagged cement automatic bag-opening and discharging device for the nuclear power station is simple in structure, low in cost, small in size, reliable in sealing, safe and convenient to use and maintain, and capable of meeting requirements for environmental protection of the nuclear power station.

The invention relates to an experimental device and an experimental method for measuring solubility of overflowed gas. A measuring device comprises a reaction unit and a measuring unit. Core equipment comprises an intermediate container, a high-temperature high-pressure sample preparer, a separation bottle, a gasometer flask and a constant pressure pump. The method comprises the following steps: filling the high-temperature high-pressure sample preparer with a certain amount of drilling fluid; injecting excessive gas into the high-temperature high-pressure sample preparer through the intermediate container; controlling the temperature and pressure of the high-temperature high-pressure sample preparer by means of a heating element and the constant pressure pump; continuously rotating the high-temperature high-pressure sample preparer, wherein gas and the drilling fluid are in full contact; when dissolving balance is achieved, reversing the high-temperature high-pressure sample preparer; taking out a proper amount of dissolved saturated drilling fluid for gas-liquid separation and separately metering the gas volume and the mass of the drilling fluid; and calculating the solubility at the temperature and pressure condition. The device and method provided by the invention have the beneficial effects that a dissolving reaction of the overflowed gas in the drilling fluid in a wellbore flow condition can be simulated, multiple times of measurement can be realized by sample transferring at a single time, and the testing efficiency is increased.