115 results about "Core cooling" patented technology

The invention provides a long-term passive cooling system of a compact small reactor, which is characterized in that a reactor and steam generators are arranged in a containment, the steam generators are connected with the reactor, and each steam generator is provided with a secondary side residual heat removal system; the liquid storage chamber is mounted on the outer wall surface of the containment in a surrounding manner; the passive heat exchanger is arranged in the liquid storage chamber and is connected with a secondary side residual heat removal system of the corresponding steam generator, so that steam of the steam generator enters the passive heat exchanger for heat exchange; the plurality of passive heat pipes are mounted on the wall surface of the containment in a penetrating manner and are used for guiding heat in the containment to the liquid storage chamber. The secondary side waste heat removal system is arranged on the secondary side of the steam generator and used for relieving non-loss-of-water accidents, short-term and long-term reactor core cooling is achieved outside the containment through the passive heat exchanger combining water cooling and air cooling, the peak pressure of the containment after the accidents is effectively reduced, long-term passive heat carrying is achieved, and the unit operation safety is improved.

The utility model provides a liquid cooling assembly, a battery cell module and a battery pack, and relates to the field of a cylindrical battery cell cooling technology. The liquid cooling assembly comprises at least one liquid cooling plate, the two opposite sides of the liquid cooling plate are used for abutting against a battery cell row, a cooling channel is formed in the liquid cooling plate, the cooling channel comprises an upper layer channel and a lower layer channel communicated with the liquid outlet end of the upper layer channel, and the cooling channel is used for introducing cooling liquid. The cooling liquid flows out of the liquid cooling plate through the upper-layer channel and the lower-layer channel in sequence. After the cooling liquid is introduced into the cooling channel of the liquid cooling plate, the cooling liquid sequentially passes through the upper-layer channel and the lower-layer channel to cool the battery cell row, and compared with the traditional mode that the cooling liquid only circulates in the cooling channel once and cools the battery cell row once, the cooling effect is better. It can be understood that the contact duration between the cooling liquid and the liquid cooling plate can be prolonged, heat conduction between the liquid cooling plate and the cooling water is better achieved, and then the cooling effect is improved.

The present invention relates to the technical field of electric spindle cooling, and particularly relates to a high-speed electric spindle core cooling device and a using method thereof, including: a spindle core, a liquid distribution plate, and a liquid supply plate for supplying liquid to the liquid distribution plate; the spindle core has a plurality of first passages and a plurality of second passages, and the liquid distribution plate is provided with a plurality of guiding passages; the liquid supply plate is provided with a plurality of drainage tubes corresponding to the guiding passages, one end of the drainage tube is fixed on the liquid supply plate, and the outer cylindrical surface of the other end is provided with a sealing ring and is embedded in the guiding passage; a sliding sleeve is arranged on the outer side of the liquid supply plate, the sliding sleeve is fixedly connected with the liquid supply plate and is slidably arranged with the liquid distribution plate, a driving member is arranged on the sliding sleeve, and the driving member drives the sliding sleeve to drive the liquid supply plate to move towards or away from the liquid distribution plate, so that the drainage tube makes a telescopic movement in the guiding passage, accelerating the flow rate of the cooling liquid, improving the cooling efficiency, reducing the temperature rise inside the electric spindle, improving the performance of the electric spindle, and prolonging the working life of the electric spindle.

The invention relates to the technical field of cables, and particularly discloses a cooling cable for high-power direct-current charging and a charging cooling system. The cooling cable comprises a cable core and a protective structure layer, the cable core is at least provided with two DC wire cores, a wire core cooling pipe set composed of two wire core cooling pipes, and a pin cooling pipe set composed of two pin cooling pipes, the first DC wire core is installed in the first wire core cooling pipe in a clearance penetrating mode, the second DC wire core is installed in the second wire core cooling pipe in a clearance penetrating mode, and the protective structure layer is arranged between the first wire core cooling pipe and the second wire core cooling pipe. A cooling medium for heat exchange and cooling of the DC wire core is introduced into the wire core cooling pipe group, and a cooling medium for heat exchange and cooling of the charging pin is introduced into the pin cooling pipe group. According to the invention, heat dissipation of the conductive wire core in the cable is realized through a simple and compact structure, and heat dissipation of the DC charging pin is effectively considered, so that the cooling effect of the whole charging path is maximized as much as possible, and adverse effects caused by overheating of the charging path are reliably reduced.

The invention relates to the technical field of temperature control, in particular to an injection mold temperature control method for automobile part production, which comprises the following steps of: respectively finishing the first temperature regulation of a cavity and a core according to the difference between the temperature values of the cavity and the core at the current moment and a required temperature value, and after the first temperature regulation of the cavity and the core, controlling the temperature of the cavity and the core to be lower than the required temperature value; and the temperature value of each monitoring point in the cavity and the mold core at the next moment of the current moment and the flow speed of cooling liquid in the cavity and the mold core cooling system are obtained, so that the local temperature difference consistency of the temperature areas of the cavity and the mold core is determined, and secondary temperature adjustment of the cavity and the mold core is completed. The temperature control precision of the injection mold can be improved, and high-precision production of high-precision automobile parts is facilitated.

The invention provides a motor stator, a motor and a vehicle power system. The motor stator comprises a stator core which is provided with a plurality of winding installation grooves which penetrate through the stator core along the axial direction of the stator core; the windings are installed in the winding installation grooves, and the winding contained in each winding installation groove comprises a plurality of wires; the insulation sleeve is installed in the winding installation groove, the insulation sleeve extrudes and surrounds the plurality of wires, and the outer surface of the insulation sleeve is provided with a plurality of concave parts, so that a stator core cooling oil channel is formed between the insulation sleeve and the wall of the winding installation groove; the stator core cooling oil channel penetrates through the stator core in the axial direction, and / or the inner surface, facing the winding, of the insulating sleeve is provided with a plurality of concave parts, so that a winding cooling oil channel is formed between the insulating sleeve and the wire, and the winding cooling oil channel penetrates through the stator core in the axial direction.

The utility model discloses a novel cooling device for demineralized water. The novel cooling device comprises a core cooling water tank body, a support pad is fixedly arranged at an opening in the front part of the punched steel plate circular filter cartridge, the front part of the support pad is in close contact with the inner wall of the rear side of the support plate body, and the punched steel plate circular filter cartridge is communicated with the water inlet interface; and an ultrafiltration membrane cover body is arranged on the inner wall of the punched steel plate circular filter cartridge. The ultrafiltration membrane cover body is arranged on the inner wall of the punched steel plate circular filter cartridge, and the ultrafiltration membrane has higher filtering precision, so that impurities such as macromolecular organic matters, colloids and bacteria in desalted water can be removed. And the rear edge of the core shell and the edge of the rear plate body are fixedly connected in a threaded connection mode, and due to the connection mode, the internal parts of the device are very convenient to maintain or replace when the internal parts of the device need to be maintained or replaced.

The utility model discloses a shaft core cooling assembly, main shaft and machine tool, including machine body part and shaft core part, the shaft core part is supported on the machine body part through the bearing, the shaft core cooling assembly forms the independent assembly that can be dismantled on the main shaft, the shaft core part extends from the first end to the second end along the axial direction, and the shaft core part extends from the first end to the second end along the axial direction. A connecting end face used for being connected with a spindle core of a spindle is formed at the second end of the spindle core component, the spindle core component is provided with a cooling flow channel extending to the connecting end face, and the machine body component is provided with a cooling connector communicated with the cooling flow channel. According to the technical scheme, the detachable cooling module used for cooling circulation of the spindle core is adopted, is independent of the structure of the spindle, and has the advantages of being simple in structure, high in stability and convenient to mount and dismount. The cooling device can be applied to high / low rotating speed of various spindles, can bear higher cooling water pressure, and is better in cooling effect.

The utility model provides a kind of deep cavity injection mold cavity core cooling mechanism, comprising: mould body, cooling assembly one and cooling assembly two, the inside of mould body is equipped with cooling assembly one for cooling, the left side surface and the right side surface of mould body are equipped with one cooling assembly two for cooling respectively, cooling assembly one includes the mounting plate for installing cooling pipe, cooling pipe is installed in the inside of mould body and is in serpentine structure, cooling assembly one includes the fixing plate for installing cooling piece, compared with prior art, the utility model has the beneficial effects as follows: by setting cooling assembly one, when using, the cooling pipe of serpentine structure prolongs the flow path of cooling medium in mould, the contact area of cooling medium in serpentine pipe flow with mould body increases, contact time is extended, can more fully absorb the heat of mould, to more effectively reduce mould temperature, improve cooling efficiency.

The utility model provides a mold threaded core cooling sleeve clamping tool which comprises a tool body, the tool body is provided with a clamping groove, a pressing block groove communicated with the clamping groove, a jackscrew hole and a blind rivet hole, the jackscrew hole and the blind rivet hole are communicated with the pressing block groove in the radial direction, and the clamping groove is used for allowing a mold threaded core cooling sleeve to be inserted in; the arc pressing block is arranged in the pressing block groove, the side, facing the clamping groove, of the arc pressing block is provided with an arc surface, the side, away from the clamping groove, of the arc pressing block is provided with a connecting screw hole, and the arc surface is used for abutting against a mold threaded core cooling sleeve; the blind rivet penetrates through the blind rivet hole to be in threaded connection with the connecting screw hole and is used for driving the arc pressing block to move in the direction away from the clamping groove; the jackscrew penetrates through the jackscrew hole to abut against the arc pressing block and is used for driving the arc pressing block to move in the direction of the clamping groove. According to the utility model, the blind rivet and the jackscrew are arranged to clamp the threaded core cooling sleeve of the mold, so that the threaded core cooling sleeve of the mold is not easy to damage.

The invention discloses a compression molding mold which comprises an upper mold and a lower mold, a cover core cooling water channel and a cover wall cooling water channel are arranged in the upper die, part of the cover core cooling water channel and part of the cover wall cooling water channel pass through the lower end of the upper die, and the part, located at the lower end of the upper die, of the cover wall cooling water channel surrounds the outer side of the cover core cooling water channel. The bottom face and the side face of the bottle cap can be cooled at the same time, and the cooling device has the advantages of being large in cooling area, wide in range, short in period and high in product forming quality.

The utility model discloses a liquid cooling plate structure for cooling battery cells, which comprises a plurality of liquid cooling plates and a plurality of liquid cooling plates, and the battery cells are arranged between two adjacent liquid cooling plates; and the cooling liquid conveying assembly is used for providing cooling liquid for the single liquid cooling plate and enabling the cooling liquid to perform circulating heat exchange in the single liquid cooling plate. According to the utility model, the plurality of liquid cooling plates and the cooling liquid conveying assemblies are arranged, the battery cells are arranged between the two adjacent liquid cooling plates, and the cooling liquid conveying assemblies control the cooling liquid to circularly exchange heat in the liquid cooling plates, so that the two sides of the liquid cooling plates can exchange heat simultaneously, namely, the liquid cooling plates positioned on the two sides of a single battery cell can exchange heat for the battery cell simultaneously; the internal and external temperature difference of the battery cell is effectively reduced; the charging efficiency of the battery cell is improved; the energy consumption loss is reduced; the service life of the battery cell is prolonged;

A nuclear reactor comprises a pressure vessel containing a nuclear reactor core. A reactor core cooling system comprises a standpipe including a plurality of orifices in fluid communication with a refueling water storage tank (RWST) to drain water from the RWST into the standpipe, and an injection line configured to drain water from the standpipe to the pressure vessel. In some embodiments the standpipe is disposed in the RWST, while in other embodiments the standpipe is disposed outside of the RWST and cross-connection pipes connect the plurality of orifices with the RWST. The reactor core cooling system may further comprise a valve configured to control flow through one orifice of the plurality of orifices in fluid communication with the RWST based on water level in the standpipe. The valve may comprise a float valve having its float disposed in the standpipe.

The utility model discloses a needle cylinder injection mold core cooling structure which comprises a first mold core, a cooling mold core and a second mold core which are sequentially connected in a matched mode, the cooling mold core comprises a first base, a spray pipe and an insert pin piece, the first base is detachably connected with the insert pin piece, and an installation cavity is formed in the first base. The spray pipe is arranged in the mounting cavity and is detachably connected with the first base, a first outlet is formed in the side wall of the first base, a first inlet is formed in the bottom of the first base and is communicated with the spray pipe, and a cooling medium enters the mounting cavity through the first inlet and flows out of the first outlet, so that the insert pin part is fully cooled; the second base is arranged on the outer side of the first mold core, the second cooling channel is formed in the second base and communicates with the cooling medium, and the second mold core is cooled, so that the needle head part and the connector of the needle cylinder product can be rapidly formed, and the forming quality, the yield and the attractiveness of the product are guaranteed.

The application relates to a continuous mold core cooling and cleaning system for pipe forming, and belongs to the technical field of pipe production equipment. The system comprises a core rod and a cooling system. The cooling system comprises a cooling box for containing cooling water. The cooling system further comprises a first circulating pipeline for driving the cooling water in the cooling box to enter the core rod and then return to the cooling box. The cleaning system further comprises an acid box for containing an acid solution and a second circulating pipeline for driving the acid solution to enter the core rod and then return to the acid box. The first circulating pipeline and the second circulating pipeline are two sets of independent pipelines. When the first circulating pipeline is conveying the cooling water, the second circulating pipeline is in a closed state. The application has the advantage of improving the cooling effect of the core rod on the inner wall of the pipe.

The invention discloses an iron core magnetic induction heating and pressurizing production line with an optimized layout structure, which comprises a scattered sheet collecting and transferring device, an iron core assembling, weighing and height measuring device, a first electromagnetic induction heating press, a second electromagnetic induction heating press and a third electromagnetic induction heating press which are arranged from left to right to form a forward arrangement equipment group, the devices in the forward arrangement device group are connected through forward conveying lines; the iron core cooling return conveying line and the iron core positioning clamp dismounting workbench are arranged from right to left to form a reverse arrangement equipment set, and the first transfer machine is arranged between the iron core output end of the third electromagnetic induction heating press and the iron core input end of the iron core cooling return conveying line at the right end of the reverse arrangement equipment set. And the second transfer machine is arranged between the iron core output end of the iron core positioning clamp dismounting workbench at the left end of the reverse arrangement equipment group and the scattered sheet collecting and transferring device at the left end of the forward arrangement equipment group. The iron core manufacturing quality and efficiency are improved.

The utility model discloses a cooling heat pipe structure for battery cells in a battery pack. The cooling heat pipe structure comprises a box body, the cooling liquid is arranged in the box body; the evaporation section is arranged at the first end of the box body; the middle channel is arranged near the middle part of the box body; the condensation section is arranged at the second end of the box body; the cover plate can cover the box body; the battery cells are installed on the cover plate, parts of a whole vehicle for cooling the battery pack are omitted, the temperature of the battery cells in the battery pack can be controlled within the optimal working range through internal circulation of the battery pack, and the structure is simple.

The invention provides a spindle core cooling assembly and an electric spindle, the spindle core cooling assembly comprises a spindle core, the spindle core is provided with a first circulation channel, a second circulation channel and a first communication channel, the first communication channel is communicated between the first circulation channel and the second circulation channel, and the first circulation channel is communicated with the second circulation channel in the fluid flowing direction; the first circulating channel, the first communicating channel and the second circulating channel are communicated in sequence, and the flowing direction of cooling fluid in the first circulating channel is opposite to the flowing direction of cooling fluid in the second circulating channel. According to the invention, at least two sections of reciprocating cooling flow channel structures can be formed on the shaft core, compared with a single flow channel of the shaft core in the prior art, the cooling length of fluid to the shaft core is increased, and the cooling effect to the shaft core is improved; the problems that in the prior art, the flow direction of a cooling flow channel of an electric spindle core is single, and the cooling performance on the spindle core is poor are effectively solved.

The utility model discloses efficient cooling equipment for a demineralized water cooling device. The efficient cooling equipment comprises a core cooling shell, an auxiliary frame body is fixedly arranged on the outer wall of the core cooling shell, and an external water inlet pipe is arranged on the auxiliary frame body; the brine cooling mechanism comprises a brine core water inlet pipe body; and one end of the external water inlet pipe extends into a cold water inlet area with an opening formed by the salt water cooling pipe network. The efficient heat exchange performance is achieved, and efficient heat exchange is achieved through the unique design of the efficient cooling equipment. The saline water cooling pipe network is located in the core cooling shell, and a good heat exchange environment is formed by the saline water cooling pipe network and cold water introduced by an external water inlet pipe. High-temperature saline water enters from the saline water core water inlet pipe body, sequentially passes through the core hollow plate body, the saline water cooling pipe network and the auxiliary hollow plate body, and continuously exchanges heat with cold water sent by an external water inlet pipe in the whole process.

Integrated passive reactor including a reactor primary circuit, a containment cooling system, a residual heat removal system, and a reactor core cooling system. Loop resistance is reduced by means of a reactor-type process design, a flow guide device is provided at a rising section of fluid to reduce the loop resistance, the rising section is shrunken to increase the arrangement space of a heat exchanger so as to further optimize system resistance, and the designs of an infinite-time passive reactor core residual heat removal system and an infinite-time passive containment cooling system are achieved. By means of the rational configuration of a pressure relief system, high-pressure safety injection is removed, and the passive reactor core cooling system is simplified. By means of the design of an auxiliary circulation device for a loss of coolant accident, the safety of a reactor core in the loss of coolant accident is further enhanced.

The utility model discloses a battery pack. The battery pack comprises a battery assembly, a battery box and a convergence assembly, and the first cooling flow channel on the bottom wall, the battery core cooling flow channel and the cooling confluence flow channel of the confluence assembly form a path for cooling the battery monomers entering and exiting the battery assembly, so that the cooling of the battery monomers is realized. The first cooling flow channel is formed on the bottom wall, so that the cooling flow channel is prevented from being arranged in the accommodating space of the battery box, the internal space of the battery box is maximized, the energy density of a battery pack can be improved, and the number of structural parts of the battery box is reduced; a large amount of gas released during thermal runaway of the single batteries can enter the gas confluence flow channel of the confluence assembly and then is discharged out of the battery pack, so that safety accidents such as fire and explosion of the whole battery pack are avoided. And the cooling medium in the cooling confluence flow channel has a cooling effect on the gas in the gas confluence flow channel, so that the temperature of the gas is reduced, and the diffusion of thermal runaway is delayed.

Disclosed is a reactor pressure vessel direct injection safety system, which comprises a first water injection pipe and / or a second water injection pipe. The first water injection pipe passes through an upper head of a reactor pressure vessel, an input end of the first water injection pipe is located outside the reactor pressure vessel and connected to a coolant source, and an output end of the first water injection pipe is located inside the reactor pressure vessel and extends through an upper core support plate to a core region. The output end of the first water injection pipe can be directly positioned to the core region to output coolant, thus enhancing core cooling efficiency. The second water injection pipe passes through the reactor pressure vessel, an input end of the second water injection pipe is located outside the reactor pressure vessel and connected to the coolant source, and an output end of the second water injection pipe is located inside the reactor pressure vessel and at least extends to a downcomer section of the reactor pressure vessel. The output end of the second water injection pipe can output the coolant directly from the downcomer section, thus facilitating flow of more coolant from a lower core support plate to the core region to serve the function of core cooling.

The utility model relates to the technical field of laser depilation instruments, and discloses a movement structure of a laser depilation instrument, which comprises a depilation instrument main machine, a plurality of moving wheels are arranged at the lower end of the depilation instrument main machine, a depilation mechanism is arranged on one side of the depilation instrument main machine, and a movement cooling mechanism is arranged in the depilation instrument main machine. The machine core cooling mechanism comprises a water tank, a cooler, a cooling pipe, a laser generating end and a laser transmitting end, and the water tank is arranged at the bottom in the hair removing instrument main machine. According to the machine core cooling mechanism and the cooler, the cooling power can be increased according to the temperature of laser, and the cooling effect with the lower temperature is provided; and then rapid cooling is achieved through the cooling pipe, so that the cooling efficiency is improved while it is guaranteed that the laser power is increased, the better depilation effect is achieved through the device, and the thorough depilation effect is achieved.

The invention discloses a motor rotor cooling structure and a motor, and the motor rotor cooling structure comprises a front-end driving structure, a rotor self-dispersing heat dissipation structure and a rear-end driving structure which rotate along with a rotating shaft. The front-end driving structure comprises a rotor core cooling first-stage pressurizing part, a rotor core cooling second-stage drainage part and a magnetic pole cooling fourth-stage pressure releasing runner; the rotor self-driving heat dissipation structure comprises a rotor iron core and a magnetic pole and a sheath which are fixed outside the rotor iron core, a rotor iron core cooling three-stage ventilation self-driving flow channel is arranged at the rotor iron core, and a magnetic pole cooling three-stage back clearance self-driving flow channel is arranged at the position close to the bottom of the magnetic pole; and the rear-end driving structure comprises a magnetic pole cooling first-stage pressurizing part, a magnetic pole cooling second-stage drainage part and a rotor iron core fourth-stage pressure release runner. Through the design of the opposite pressurizing blades of the inner layer and the outer layer and the twisted flow channels, one-way flow limitation is broken through, Keanda effect self-compensation of airflow is achieved, and opposite double-layer powerful cooling of the magnetic poles and the rotor iron core is achieved.

This utility model discloses a screw core exhaust cooling device and a screw extruder, belonging to the field of plastic extrusion technology. It includes: a screw with a unidirectional through-hole along its axis; a first support located at the open end of the screw core hole, the first support having a mounting hole and several vent holes; and an exhaust pipe, one end of which is connected to an external exhaust fan, and the other end inserted into the screw core hole through the mounting hole, forming an air intake channel between the exhaust pipe and the inner wall of the screw. When the exhaust fan is working, a negative pressure is generated at the inserted end of the exhaust pipe, driving outside air into the air intake channel through the vent holes and then drawing it out through the exhaust pipe. This exhaust cooling method overcomes the shortcomings of traditional liquid cooling methods, such as high leakage risk, complex structure, and high cost. It also compensates for the poor temperature control capability of non-core cooling structures, possessing significant advantages such as simple structure, safety and reliability, and high cooling efficiency, and has good application prospects and promotional value.

The invention relates to the technical field of transmission devices, in particular to a five-axis symmetric driving transmission device and method, and the device comprises a sealing shell, a transmission system, a cooling system and a temperature sensing control system; the transmission system adopts a five-axis symmetric layout, a first auxiliary uniform-load shaft and a second auxiliary uniform-load shaft are arranged in a mirror symmetry manner by taking the axis of the first output shaft as a center, and each shaft is provided with an axial through hollow runner; the cooling system comprises an axis cooling unit communicating with the hollow flow channel, a spray cooling unit used for spray cooling of a gear meshing area and an end face heat dissipation unit matched with the shell cooling channel. The temperature sensing control system monitors the temperature through a shaft body and a meshing area temperature sensor group, and a control terminal controls the graded operation of the cooling system according to a temperature signal; radial force self-balancing and pure torque output are achieved through a symmetrical transmission structure, and the transmission precision, the heat dissipation efficiency and the operation energy efficiency are effectively improved by combining multi-stage collaborative cooling and intelligent temperature control.

An emergency core cooling system, comprising a first line (1) and a second line (2), wherein the first line (1) comprises a first safety injection pump (101), a second safety injection pump (102), a first emergency core water-injection line, and a first connecting line (15) for conveying an emergency coolant to a second nozzle (209) of a reactor pressure vessel; and the second line (2) comprises a third safety injection pump (201), a fourth safety injection pump (202), a second emergency core water-injection line, and a second connecting line (25) for conveying the emergency coolant to a first nozzle (109). The system can effectively shorten an emergency core water-injection path after an accident, improve the reliability of an emergency core injection function, and reduce the probability of reactor core damage caused by a loss-of-coolant accident, and the system can also reduce the production cost, and facilitate a balanced design with both system safety and economy.

A control method, a control apparatus, a control system, and a readable storage medium are provided. The control method for controlling a fan for a power conversion circuit board includes: determining a core cooling rotational speed based on a core temperature of the power conversion circuit board; determining a plurality of power cooling rotational speeds based on a heat radiation temperature of the power conversion circuit board and charging and discharging power of an energy storage system to which the power conversion circuit board is applied; and controlling the fan to rotate at a maximum rotational speed among the core cooling rotational speed and the plurality of power cooling rotational speeds.

The invention relates to the technical field of high-temperature valves, and discloses a medium cooling type high-temperature ball valve which comprises a valve body, an integrated hollow valve ball body and a hollow valve rod, a circumferential first cooling medium annular flow channel is formed in the hollow valve ball body, and the hollow valve rod communicates with the flow channel; a jacket is arranged outside the valve body and forms a second cooling medium annular flow channel with the valve body; the two ends of the hollow valve rod are provided with rotary joints and connected into a circulating cooling system. Internal core cooling and external global cooling dual-path collaborative cooling are adopted, the external bearing, the axial movement limiting structure and the piston type pre-tightening valve seat are matched, the high temperature of 800 DEG C or above can be stably resisted for a long time, and the high-temperature-resistant ball valve has the advantages of being high in cooling efficiency, smooth in opening and closing, reliable in sealing, long in service life, low in manufacturing cost and the like; the method is suitable for superhigh-temperature fluid control working conditions such as thermal power generation, metallurgy and chemical engineering.

The present invention relates to the technical field of plasma cutting, and specifically to a plasma cutting device for the production of expansion joints, which includes a plasma arc gun and an arc intercepting integrator for intercepting the scattered branches on the periphery of the plasma arc beam emitted by the plasma arc gun. The arc intercepting integrator includes a disc frame, an external gear ring, a module device, a rail frame, and an inner core cooling device. The channel cylinder body is spliced by multiple evenly arranged core blocks. The plasma arc beam passes through the inside of the channel cylinder body. If there are scattered branches on the periphery of the plasma arc beam, the branches will be intercepted by the channel cylinder body, and the remaining densely gathered plasma arc beam passes through the intercepting cylinder body and then penetrates the workpiece plate, making the edge of the cut workpiece plate smoother and neater.