121results about How to "Stable air supply" patented technology

The invention discloses a two-stage centrifugal compressor and a method for providing air for static pressure gas bearings of the two-stage centrifugal compressor. The two-stage centrifugal compressor comprises a motor, a first-stage compressor and a second-stage compressor. The first-stage compressor comprises a first base. The second-stage compressor comprises a second base. The motor comprises a motor shell body and a motor rotor arranged in the motor shell body. A first output end and a second output end of the motor rotor are arranged on the first base and the second base in a rotatable mode through the static pressure gas bearings respectively. According to the two-stage centrifugal compressor, the static pressure gas bearings are arranged, so that the static pressure gas bearings do not need to use lubrication oil, accordingly, pollution on cooling agents from the lubrication oil is avoided, the complexity of the two-stage centrifugal compressor is lowered, reliability and performance are improved, and maintaining cost is reduced.

The invention provides a flare gas safe recovery and discharge system, which comprises a flare gas delivery flask (2), an automatic control water-sealed valve (3), a gas holder (6) and a flare tip (13) and is characterized in that the gas inlet end of the flare gas delivery flask (2) is connected with a flare gas source by a flare gas main pipe (1); one path of the output end of the flare gas delivery flask (2) is connected with a gas torch (6), and the other path thereof is connected with the flare tip (13) via the automatic control water-sealed valve (3); an automatic control valve (4) and aflare gas filtering tank (5) are mounted on the pipeline connecting the flare gas delivery flask (2) with the gas torch (6); the output end of the gas torch (6) is connected with a compressor (7); and the output end of the compressor (7) is connected with a gas appliance (8). The invention has the advantages of simple system structure, convenient manufacturing and installation and safe usage; andthe invention also has the characteristics of being favor of preventing environment, saving energy and the like.

A gasification apparatus is provided which enables gas hydrate pellets to be transported and gasified in the same vessel and enables a gas to be generated by pellet decomposition in a controlled amount. The apparatus is free from bridging. The apparatus includes a heat-in-saluted vessel main body and, disposed therein, a tubular structure which is open at the top and bottom. This tubular structure holds therein gas hydrate pellets obtained by compression-molding a gas hydrate produced by the hydration reaction of a raw-material gas with raw-material water. The tubular structure becomes wider in diameter from the upper opening toward the lower opening. A channel for passing a heat carrier therethrough has been disposed between the lower end of the tubular structure and the inner bottom surface of the vessel main body. The apparatus is further equipped, between the tubular structure and the inner wall surface of the vessel main body, with a nozzle which ejects the heat carrier in a circumferential direction for the vessel main body. The vessel main body has a discharge pipe for discharging the heat carrier ejected from the nozzle, the discharge pipe projecting upright from the inner bottom surface of the vessel main body.

The invention relates to an air brick, in particular to a dispersive air brick manufactured by a cast molding technology. The materials comprise main raw materials, micro-powder, an expanding agent, a bonding agent, a dispersing agent, a microvesicle air entraining agent and a foam stabilizing agent, wherein the microvesicle air entraining agent adopts rosin ester air entraining agent, the foam stabilizing agent adopts nonionic type acid amide foam stabilizing agent, and the dispersing agent adopts organic nonionic type water reducing agent. Inorganic salt ionic type water reducing agent and acidic and weak acidic retarder are not recommended to use in the materials. A blank molded by the materials needs to be immediately maintained at high temperature so as to accelerate blank hardening. The dispersive air brick adopts the cast molding technology and has simple technology process, less equipment investment and high production efficiency, and not only the dispersive air brick with a regular shape can be manufactured, but also a large special-shape dispersive air brick can be manufactured; and the manufactured product has even air hole distribution, stable venting performance, molten steel scouring resistance, high erosion ability and good stripping resistance.

The invention discloses a novel vehicle-mounted natural gas supply system and a stable gas supply method of the novel vehicle-mounted natural gas supply system. The novel vehicle-mounted natural gas supply system comprises an LNG storage tank, a gasification device, a liquid outlet pipe connected between the LNG storage tank and the gasification device, an LNG pump used for extracting liquefied natural gas from the LNG storage tank and a gas pressure driven device driving the LNG pump to work. The LNG pump is arranged on the liquid outlet pipe. The gas pressure driven device is arranged on a pipeline on the downstream of the gasification device and driven through gas pressure of natural gas flowing through the pipeline and connected with the LNG pump through a driving pipeline. The gas pressure driven device of the system is driven through gas pressure of the gasified natural gas in the gasification device to work and drive the LNG pump to extract the liquefied natural gas from the LNG tank, the natural gas flows through the liquid outlet pipe to the gasification device, and therefore the passive circulatory system is formed. According to the system, gas fuel can be stably supplied to an engine, a self-pressurization system is omitted, evacuation loss of natural gas is reduced, and resource waste is avoided.

The invention discloses a biogas bio-fermentation preparation system. The system contains a biogas bio-fermentation device, wherein the biogas bio-fermentation device is connected with a gas-water separation device, a safe exhaust device, a gas storage device, a purification and desulfurization device, a biogas special pressurization device and a biogas control valve in turn through a biogas special pipeline; and the biogas bio-fermentation device is provided with a gas outlet which is used to be connected with the biogas special pipeline, and the biogas bio-fermentation device is also provided with an automatic temperature control device. The system has the advantages of simple structure, automatic temperature control, safety in operation and stable gas supply.

The invention relates to a dryer, which comprises a dryer housing, an air heating room, an air supply room, a drying channel, an air inlet which is communicated with the air heating room, an air outlet which is communicated with the front end of the drying channel, a material inlet which is formed in the front end of the drying channel, and a material outlet which is formed in the rear end of the drying channel, wherein a heat source heat exchanger is arranged in the air heating room; and a direct-blowing type air supply device is arranged in the air supply room. The dryer also comprises an air regulation guide plate, an exhaust waste heat recycling device, an intelligent fresh air humidity regulation device and a hot air compensation device. The dryer has the beneficial effects that the dryer can be used for drying laver and other products; constant-temperature and stable air supply can be realized; the air supply device is convenient to dismount, maintain and clean; the exhaust waste heat recycling function and partial exhaust recycling function are realized; thermal discharge is reduced and a product is energy-saving so that the production cost is reduced; and the hot air compensation device is capable of improving the drying efficiency of the dryer and shortening the drying time.

The invention discloses a rheid fermenting cellar and a method for producing methane by utilizing the rheid fermenting cellar. The rheid fermenting cellar comprises a seal housing (1) and cement floor (5), the seal housing (1) is made from flexible sealing membrane material and the lower edge of the seal housing (1) is a ring-shaped air inflation sealing ring (2).The cement floor (5) is embedded with a ring-shaped groove (3), the cross section of the groove is in the shape of an inverted ohm shape with the small opening and the large cavity. The air inflation sealing ring (2) is integrated with the ring-shaped groove (3) and tightly integrates the seal housing (1) and the cement floor (5) after being aerated, thus forming a sealed rheid fermenting cellar. The top of the rheid fermenting cellar is provided with a methane outlet pipe (4).In the invention, the solid state fermentation technology is adopted, the pretreated ferment raw material is charged in a split mode in plastic boxes( barrels) suitable for transportation, and piled up and stacked in advance in the rheid fermenting cellar. The method of the invention has large production of methane, simple device structure, easy construction, small investment and low cost.

The invention relates to an intelligent control system of an air-cooled screw air compressor, which is connected with an air compressor system and a user centralized control system, and comprises a PLC programmable logic controller, a fan frequency converter, a temperature sensor, a pressure sensor and a touch screen. The temperature sensor and the pressure sensor are connected with four paths of analog quantity input modules through shielded cables, and then are connected with a CPU central control unit. The PLC is connected with the four paths of the analog quantity input module; the first path of the analog quantity input module is connected with the fan frequency converter through a shielded cable; the frequency converter is connected with a fan motor of the air compressor system; the second and third paths of the analog quantity input modules are respectively connected with a compressor unit protective device; and the four path of the analog quantity input module is connected a compressor motor. The intelligent control system realizes the functions of settable user pressure control, PID closed-loop control of a cooling fan, switching of manual and automatic control functions, setting of control parameters on a display screen, displaying of measurement parameters and alarm parameters on the display screen, communication meeting standard communication protocol requirements, and the like.

The invention discloses a running method of a heat pump unit of an energy-self-supplied gas engine. The running method is divided into a heating mode running process and a refrigerating mode running process. The heating mode running process comprises heating circulation, waste heat recovery and circulation and circulation of hot water supplied for a user, the refrigerating mode running process comprises a refrigerating circulation and engine heat-dissipation process of the gas heat pump unit and a process of circulation of chilled water supplied for the user. By the method, the unit can independently run for above 100 hours in regions where gas pipe networks are not paved or are not paved in time. The shortcomings that the initial cost for construction of the gas pipe networks is high, and the pavement working hours are long are overcome. Practicability and adaptability of the heat pump unit of the gas engine are improved. Meanwhile, in a gasification process of liquefied natural gas, the temperature of the hot water supplied for the user can be increased by waste heat of the gas engine, heat can further be provided for gasification of the liquefied natural gas, and stability of gas supply is guaranteed.

The invention aims to provide a production device and a production technology for dacron double-polyester double-splendor Liz silk fabric which have the characteristics that the produced double-polyester double-splendor Liz silk fabric has small bulges on silk after high-temperature dyeing, and is easy in napping and good in style hand feeling. The disclosed production device for dacron double-polyester double-splendor Liz silk comprises a double-protofilamen rack, a protofilament pipe, filament pressing rods, a first roller, a first net mouth, an upper hot box, a cooling plate, a false twisting device, a second roller, a lower hot box, a second net mouth, a third roller, an oil tanker, a silk discharge guide device, a friction roller and a finished product bobbin. The dacron double-polyester double-splendor Liz silk produced by adopting the method is one kind of dacron composition fiber, and specifically used for producing and manufacturing high-grade fabrics such as bag cloth and sofa cloth; the new product has the characteristics that certain variable elasticity is realized, the fabric after single-color dyeing has the bicolor or tricolor effect, napping is easy, rebound resilience is good, and the style hand feeling is good.

The invention belongs to the technical field of air conditioning air flues, and discloses a phase change energy storage air flue and a vehicle-mounted air conditioning system for a railway vehicle or an automobile. A phase change energy storage unit is arranged in an air flue of the air conditioning system, residual heat in a gas is absorbed through phase change heat absorption and release, the heat is released to a lower-temperature gas, the energy is recovered, and energy saving is realized; the temperature of the gas entering a room or a carriage keeps stable, and the user experience is improved; when the air conditioning system fails, the phase change energy storage unit still uses stored cold energy or heat energy to cool or heat the gas entering the air flue, the stable air supply is provided for a certain period of time, and the user experience is improved.

The invention discloses a double-air-chamber box body for transmitting suspended materials, and relates to a transmission system for long-distance materials transmission. The problem of low running stability of a material transmission system is solved. According to the double-air-chamber box body, a first cambered body (10) and a second cambered body (13) are welded on two sides of a concave cambered surface of a disk slot (9) to form a combined body of the disk slot and the cambered bodies; a disk slot air gap (8) is formed in the middle of the disk slot (9); a rubber seal belt (2) is paved on the end face of an upper opening of an air chamber box (2); the combined body of the cambered bodies is arranged on the rubber seal belt (2); an air flow partition plate (5) is welded in the air chamber body, and divides the air chamber box into an upper small air chamber (6) and a lower large air chamber (3) which have different volumes; an air inlet (1) is formed in a side wall of the air chamber box; reinforcement ribs (7) are uniformly distributed on two side walls of the air chamber box; and an air flow partition plate air gap (4) is formed in the middle of the air flow partition plate (5). A plurality of double-air-chamber box bodies are connected in series with one another; and the conveyer belts are paved on the upper surface of the combined body of the disk slot and the cambered bodies, so that the material transmission system is formed.

The invention relates to a device which uses insert gases for protecting a container for volatile flammable and explosive materials. According to the device, the top of a material tank is connected with a liquid seal trough through a gas overflowing pipeline, and the gas overflowing pipeline goes deep into the bottom of the liquid seal trough; the top of a buffer tank is connected with the top of the material tank through a gas supply pipeline and is further connected with an inert gas supply device through an inert gas supply pipeline; the top of the material tank is further provided with an emergency pressure relief pipe. The device can guarantee that the upper space of the material tank achieves automatic high-pressure exhausting, automatic high-oxygen-content gas supply and automatic low-pressure gas supply, prevents air from entering the container, and lowers the probability of explosion accidents of the container. The device has the advantages of being simple in structure, high in safety and low in cost, and can be widely applied to anti-explosion prevention and protection for containers for volatile flammable and explosive materials such as oil products, alcohol and aldehyde in the relevant industries of petroleum, chemical engineering and the like.

The invention discloses a system used for producing biogas from renewable energy by multi-energy coupling. The system comprises a solar energy heat power generation system, a biomass raw material pre-treatment system, a biogas fermentation system, a waste-heat utilization system and a fuel auto-control injection system; a heat exchanger (3) of the solar energy heat power generation system is connected to a compressor (1) and a gas turbine (2) respectively; a mixer (12) of the biomass raw material pre-treatment system is connected to an electric generator (7); exhaust generated in the waste-heat utilization system is exhausted via a solar energy collector (4), the gas turbine (2), the heat exchanger (3) and a silencer (6); a fire barrier (16) of the fuel auto-control injection system is connected to a combustion chamber (5); and a temperature indicator is connected to a pipeline arranged between the solar energy collector (4) and the combustion chamber (5).

The invention discloses a mounting method for an air delivery duct of a conference room of a special railway vehicle. The method comprises the following steps of: fixing a main air duct with an air duct supporting beam; fixing the air duct supporting beam with an aluminum longitudinal beam and hanging iron; mounting a secondary air duct connecting subassembly; fastening and connecting the secondary air duct with the second secondary air way connecting iron through a bolt; mounting a connecting air duct between a secondary air duct air inlet and a main air duct air outlet; fixing an illumination lamp belt at the lower side of the secondary air duct air outlet through the bolt; connecting an end of a side ejection plate with the upper end of the secondary air duct; propping the ejection plate to a horizontal pressure plate inside the secondary air duct; tightly adhering the ejection plate to the secondary air duct horizontal pressure plate; buckling the secondary air duct by one side of the air delivery shield plate through an inserting structure; connecting and fastening the other side of the air delivery shield plate with the secondary air duct through the bolt; and after finishing the mounting of air delivery shield plates at two sides, naturally dropping the ejection plate on the bracket with a warped inner end on the air delivery shield plates. The novel air delivery duct structure provided by the invention has the advantages of advanced mounting method, high assembling precision and higher assembling efficiency.

The present invention discloses an air conditioner which comprises an indoor unit body and a heat exchanger formed in the indoor unit body. A mixed air outlet and a non-heat-exchange air inlet are formed in the indoor unit body, and an air supply device communicated with the non-heat-exchange air inlet and the mixed air outlet is formed in the indoor unit body. A first air channel and a second air channel are further formed in the indoor unit body and are horizontally and symmetrically arranged with the vertical line of the axis of the air supply device as the symmetric axis, the air supply device is arranged at an air outlet of the first air channel and an air outlet of the second air channel, a first cross-flow fan is formed at the position of an air inlet of the first air channel, and a second cross-flow fan is formed at the position of an air inlet of the second air channel. The air conditioner can solve the problems that in an existing air conditioner with an installation portion, an additional air supply device is difficult to arrange, and air volume increase and air-out softness improvement are also difficult.

The invention relates to a method used to stabilize CNG high-flow air feed. A device comprises a collecting pipeline used to collect natural gas released by each tank car. The collecting pipeline comprises a main pipe and branch pipes arranged on the main pipe. The air inflow end of each branch pipe is respectively connected with the air outlet of the tank car. The air outlet end of the main pipe is provided with a main pipe pressure measuring device and a flow measuring device. Each branch pipe is respectively provided with an automatic control valve. The pipe body of each branch pipe between the automatic control valve and the tank car is respectively provided with a branch pipe pressure measuring device. A control device receives signals acquired by the branch pipe pressure measuring devices, the main pipe pressure measuring devices, and the flow measuring device, and analyzes and processes the signals and regulates on-off state of each automatic control valve according to analysis results. In the above technical scheme, the control device regulates on-off state of each automatic control valve, so that the output end of the main pipe can stably provide high-flow air feed, and high-flow air feed requirements of users are satisfied.

The invention discloses an auxiliary airflow type pneumatic on-demand sprayer for reducing diameters of metal droplets, which belongs to the technical field of additive manufacturing. The auxiliary airflow type pneumatic on-demand sprayer comprises three parts: a heater, a sprayer, and an auxiliary air circuit device. The heater is mainly composed of a heating ring; the sprayer is mainly composedof an alloy casing, a nozzle casing, a nozzle, an end cover and the like; the auxiliary airflow device is mainly composed of an auxiliary airflow disk. In 3D printing, the on-demand sprayer can reducethe diameters of the droplets by adjusting the airflow of the auxiliary air circuit for a situation that the diameter of the nozzle cannot be continuously reduced, and can also be used for adjustingsome special cases that it is easy to oxidize when special metals are sprayed and the like; the forming precision is effectively improved, the original performances of the materials are ensured, and the working requirements under different conditions are satisfied.

The invention discloses a biomass pyrolysis combustion furnace, and belongs to the filed of biomass fuel pyrolysis equipment. The biomass pyrolysis combustion furnace comprises a bracket, a furnace shell, air inlets and a funnel cap arranged on a furnace pipe, wherein the furnace shell is arranged on the bracket, the furnace pipe is located inside the furnace shell, the air inlet are formed on the furnace shell, the funnel cap is of a structure with an upper layer and a lower layer which form a secondary air supply chamber, a cone-frustum-shaped ignition cavity is arranged on the middle of the funnel cap in the axial direction, the bottom of the furnace pipe is provided with a hole, a primary air supply chamber is arranged between the bottom of the furnace pipe and the furnace shell, the air inlets are respectively connected to the primary air supply chamber and the secondary air supply chamber, and a combustion chamber is formed between the funnel cap and the inner wall of the upper part of the furnace shell. The biomass pyrolysis combustion furnace disclosed by the invention has the advantages that the pyrolysis of a biomass fuel is sufficient, the combustion is complete, and the heat energy after combustion is utilized fully.

The invention discloses a wall-mounted type air-conditioner indoor machine and an air conditioner. The wall-mounted type air-conditioner indoor machine comprises a housing and an air supply assembly, wherein the housing comprises a front housing and a rear housing, wherein the rear end of the front housing is opened, the front housing is in a hollow and semi-spherical shape, and the rear housing is connected with the opening end of the front housing; the air supply assembly is accommodated in the housing; the air supply assembly comprises an air wheel, a driving motor and a support which is used for supporting the air wheel, one end of a rotating shaft of the air wheel is fixedly connected with the driving motor, and the other end of the rotating shaft of the air wheel is rotationally connected with the support. According to the wall-mounted type air-conditioner indoor machine, the support is arranged at one end, away from the driving motor, of the air wheel, the air wheel is rotationally connected with the support, and the two ends of the air wheel are supported by the driving motor and the support respectively, so that the installation stability of the air wheel is improved, the air supply stability of the air wheel is more stable, and accordingly, the phenomenon of wind energy consumption caused by instable air flow is avoided; at the same time, noise caused by collision and friction of the air flow and the front housing and / or the rear housing is reduced, and the noise caused by turbulent flow is eliminated.

The invention discloses a process for synthesizing high-quality sodium silicate with low energy consumption, aims to solve the problems of high energy consumption and poor product quality of an existing process for producing sodium silicate, and relates to the technical field of processes for producing sodium silicate. The process for synthesizing high-quality sodium silicate with low energy consumption comprises the following steps of: connecting a soft water necessary device of a gas producer with a blast blower, wherein water gas produced by the gas producer sequentially passes through a cyclone dust collector, an exchanger and a heat storage chamber, and the heat storage chamber is provided with an interlayer which is connected with a waste heat pipe of the gas producer; performing heat preservation on the heat storage chamber by using the waste heat of the gas producer; directly introducing the water gas in the heat storage chamber into a smelting kiln for burning; introducing molten sodium silicate produced by the smelting kiln into a clarifying and precipitating tank for purification and precipitation; and then putting the molten sodium silicate into a discharging machine through a chute so as to be in contact with circulating water, and packaging after cooling. According to the process, the gas supply is more stable, the water gas is preheated before entering the smelting kiln for burning, the coal consumption can be saved, and the sodium silicate is purified and precipitated, so that the product quality is improved.

The invention discloses a gaseous ammonia fuel supply system with stable injection pressure, and belongs to the technical field of novel ammonia fuel engines. The problem that when existing ammonia fuel enters an engine in a gaseous state, the injection pressure is not stable in a highly vaporized state is solved. A switch valve and a first pressure reducing valve are sequentially arranged on a connecting pipeline between an ammonia gas bottle and a heating vaporization cavity, an electromagnetic valve is arranged on a connecting pipeline between the heating vaporization cavity and a pressure surge cavity, a second pressure reducing valve is arranged on a connecting pipeline between the pressure surge cavity and an ammonia gas rail, a heating resistor is arranged outside the heating vaporization cavity, a first pressure sensor is arranged in the pressure surge cavity, and the electromagnetic valve, the first pressure sensor and an ammonia gas injection valve are electrically connected with an ECU controller. By automatically controlling the pressure of highly vaporized ammonia gas, the stable, controllable and adjustable injection pressure in the supply of gaseous ammonia fuel can be realized, and the phenomenon that the injection pressure is unstable and difficult to control in ammonia gas supply is effectively solved.

The present invention discloses an air conditioner which comprises an indoor unit body and a heat exchanger formed inside the indoor unit body. A mixed air outlet and a non-heat-exchange air inlet are formed in the indoor unit body, and an air feeding device communicated with the non-heat-exchange air inlet and the mixed air outlet is formed in the indoor unit body. Two cross flow fans are further formed in the indoor unit body, an isosceles triangle is formed by the axis projection points of the two cross flow fans and the axis projection point of the air feeding device on the section perpendicular to the axis of the air feeding device, and the axis projection point of the air feeding device is the vertex of the isosceles triangle. Through the application of the air conditioner, the problem that an air feeding device for increasing air volume and improving the gentleness of outlet air is difficult to arrange additionally on an existing air conditioner with a mounting part can be solved.

The invention discloses a butt-jointing positioning and locking mechanism for a large device. The butt-jointing positioning and locking mechanism comprises a base, and further comprises a main bracket, a top column bracket and a top column which are arranged on the base; the top column can slide in a cavity of the top column bracket, and an elastic part is arranged between the end surface of the top column and the end surface of the top column bracket; and a V-shaped clamping plate and a lock hook are arranged on the base, the V-shaped clamping plate and the tail end of the lock hook are connected with a second column pin which is arranged on the base and rotate around the second column pin, and a side plate of the lock hook is connected with an output end of an air cylinder through a first column pin. According to the butt-jointing positioning and locking mechanism, the stroke of a telescopic rod of the air cylinder is controlled relying on the position sensing of the air cylinder, and the rotation movement of the lock hook is achieved; and a closed circuit is formed by the lock hook and a V-shaped clamping lock, mechanical limiting is achieved without other limiting sensors, thecontrol system is simple, and positioning is accurate and reliable.

The invention discloses a method for circulating and vaporizing ammonia, which has low energy consumption and is safe and reliable; the method has the processing steps: an external ammonia pump used for storing automobile transmits a certain amount of liquid ammonia into a storage tank body; when the environmental temperature lowers, the liquid ammonia in the storage tank body enters into an electrical heating carburetor through a pipeline for liquid state heating, the liquid ammonia in the electrical heating carburetor is changed into gaseity to be circulated into the storage tank body and then is discharged from an exist of ammonia gas in the storage tank body; at the same time, the invention also discloses the electrical heating carburetor which has ingenious design and safe use, and can reduce the cost; the electrical heating carburetor mainly consists of a box body, a box top, box bottom, the exist of ammonia gas, a platinum resistance, a blowing tube, an ammonia inlet, a water inlet, an overfall gap and a vaporizing disc pipe; the differences line in that the box body is provided with a juice level gauge and is internally equipped with an explosion prevention heating device; the invention can be widely applied to the industries such as iron and steel, powder metallurgy, heat treatment, chemical engineering and the like which transform liquid ammonia into gaseous ammonia.

The invention discloses a high-power V-type diesel engine body with an explosion-proof valve. The high-power V-type diesel engine body comprises a diesel engine body main body, cylinder bodies and gasinlet cavities, wherein the diesel engine body main body, the cylinder bodies and the gas inlet cavities are integrally casted, the two V-type rows of cylinder bodies with the included angle of 35-75degrees are arranged on the upper portions of the diesel engine body. Six cylinder sleeve holes are uniformly distributed in each row of cylinder bodies. The gas inlet cavities are formed in the topof the diesel engine body main body and evenly provided with six cylinder head gas inlet holes and are also provided with five explosion-proof valve holes. The explosion-proof valve holes and the cylinder head gas inlet holes are arranged at intervals. The gas intake cavities and the diesel engine body main body are integrally cast and formed. The explosion-proof valve holes for controlling the gas intake pressure are formed. The V-type cylinder body design is adopted, so that the whole diesel engine body is compact in structure, saves space, and is suitable for diesel engines with high powerand high strength requirements.

The invention discloses a blower control system during power frequency / frequency conversion switching of a high-voltage frequency converter. The system comprises a control system which is connected to the high-voltage frequency converter and a damper regulator which is arranged between the control system and a blower damper, wherein the control system is used for receiving operation signals which are transmitted by the high-voltage frequency converter and retransmitting damper opening control signals which are transmitted by the high-voltage frequency converter to the damper regulator, and the damper regulator is used for controlling the opening of the blower damper by using damper opening control signals. During power frequency / frequency conversion switching of the high-voltage frequency converter, damper opening control signals which are transmitted by a Data Communication System (DSD) to the damper regulator is used for controlling the opening of the blower damper, the air supplying amount during output of the power frequency is the same with the air supplying amount during output of the frequency conversion, the air supplying amount is stable, and a boiler cannot explode or cannot be damaged caused by the fact that the boiler is power off or the negative pressure is high.