254 results about "Tubing types" patented technology

The utility model discloses a left tube plate and right tube plate communicated winding tube bundle structure, which relates to the technical field of winding tube type heat exchangers, and comprises a left tube plate, a central tube, a winding tube component and a right tube plate, the centers of the left tube plate and the right tube plate are provided with communication holes, the left end of the central tube is welded with the left tube plate and communicated with the left communication hole, and the right end of the central tube is welded with the right tube plate. The right end of the central tube is connected with the right tube plate in a welded mode and communicated with the right communication hole so as to communicate the left tube plate with the right tube plate, the central tube is of a combined connection structure of a key and an expansion joint, and the winding tube assembly is connected to the central tube in a sleeved mode and arranged between the left tube plate and the right tube plate. The communicating holes are formed in the left pipe plate and the right pipe plate, and the left pipe plate and the right pipe plate are connected through the central pipe to form a medium channel, so that the purpose of conveying media required by specific purposes is achieved.

The application discloses finned tube type phase change heat storage equipment, including heat storage shell, both ends of heat storage shell are provided with sealing end plate, two sealing end plates are arranged, the inside of heat storage shell between two sealing end plates is provided with partition layer, the middle of heat storage shell is provided with coaxial center flow pipe, the opposite ends of center flow pipe are sealed and penetrated through sealing end plate through sealing sleeve, the space between partition layer and center flow pipe is set as phase change heat storage cavity, the inside of partition layer and the outside of center flow pipe are provided with heat transfer fin, the application belongs to phase change heat storage technical field, the purpose of the application is to solve the problems of low heat storage efficiency and poor equipment stability in prior art, the technical effects are as follows: double flow makes phase change heat storage efficiency improved, double cavity phase change heat storage material is arranged in heat storage equipment, heat storage energy efficiency is high, fin strengthens phase change heat storage and structural support, equipment is stable, and has good sealing and plugging performance.

The invention relates to the technical field of heat exchange equipment, in particular to an intelligent self-adaptive multi-working-condition efficient heat exchange finned tube type direct water-cooling evaporative heat exchanger which comprises a shell, a finned tube is installed in the shell, a flow meter is installed at the liquid inlet end of the finned tube, and the flow meter is electrically connected with a controller. The liquid inlet end of the shell communicates with a water delivery pump, a spraying assembly and a cleaning assembly through a four-way pipe, the liquid outlet end of the shell communicates with a drainage pump, the liquid outlet end of the drainage pump communicates with the liquid inlet end of the water delivery pump, and the controller is used for controlling the drainage pump, the water delivery pump, the spraying assembly and the cleaning assembly to work. The controller is used for controlling the drainage pump, the water delivery pump, the spraying assembly and the cleaning assembly, the drainage pump, the water delivery pump, the spraying assembly and the cleaning assembly can work separately in an intelligent and self-adaptive mode under different working conditions, the heat exchange efficiency can be effectively and dynamically adjusted in real time when loads are changed or the environment temperature fluctuates, and the heat exchange efficiency is improved. The energy consumption is reduced.

The invention discloses a vacuum tower top condensation reflux system which comprises a vacuum tower, the winding tube type heat exchanger is vertically arranged and is provided with a tube pass and a shell pass, a tube pass inlet of the winding tube type heat exchanger is used for inputting a cold medium, a tube pass outlet of the winding tube type heat exchanger is used for outputting the cold medium after heat exchange, and a shell pass inlet of the winding tube type heat exchanger is used for inputting vacuum tower top gas; the lower portion of the shell side is provided with a cavity used for receiving condensate obtained after condensation of vacuum tower top gas and is provided with a shell side liquid phase outlet used for outputting the condensate in the cavity, the upper portion of the shell side is provided with a shell side gas phase outlet used for outputting non-condensable gas, and the shell side gas phase outlet is used for being communicated with a vacuum pump. According to the invention, after the vacuum tower top gas enters the shell pass for heat exchange and condensation, the condensate flows into the chamber under the action of self gravity and then is output from the shell pass liquid phase outlet, the non-condensable gas flows upwards and is discharged from the shell pass gas phase outlet, and the chamber plays a role of a storage tank without additionally arranging a storage tank; and equipment such as a condenser above the storage tank does not need to be additionally arranged. The device can be simplified, and the resistance drop is small.

The utility model relates to the technical field of heat exchangers, in particular to a four-tube-pass U-shaped tube type heat exchanger which comprises a tube box, a barrel, a tube plate and a plurality of U-shaped heat exchange tubes, the tube plate is located at the joint of the tube box and the barrel, a cross partition plate groove is formed in the tube plate, a group of cross partition plates are arranged in a cavity of the tube box, and the U-shaped heat exchange tubes are arranged in the tube box. The shape of the end face of the cross-shaped partition plate is matched with the shape of the cross-shaped partition plate groove, a cavity in the tube box is divided into an upper material inlet cavity, a lower material outlet cavity, a left transition cavity and a right transition cavity by the cross-shaped partition plate, the U-shaped heat exchange tubes are divided into four sets, and each set of U-shaped heat exchange tubes are arranged on the cross-shaped partition plate groove of the tube plate in a straddling mode. Wherein the two ends of the upper two groups of U-shaped heat exchange tubes are respectively communicated with the material inlet cavity and the transition cavity on the same side, and the two ends of the lower two groups of U-shaped heat exchange tubes are respectively communicated with the material outlet cavity and the transition cavity on the same side; according to the four-tube-pass U-shaped tube type heat exchanger with the structure, the heat exchange efficiency can be improved when tube pass materials are steam or gas condensation working conditions.

The invention relates to the technical field of reaction kettles, in particular to an outer coil half-pipe type heating stainless steel reaction kettle which comprises a shell unit and a release unit, the shell unit comprises a kettle body, a top cover, a stirring mechanism and an outer coil pipe, the outer coil pipe is spirally wound on the outer surface of the kettle body, and the release unit comprises an air inlet pipe fixedly connected to the bottom end of the outer coil pipe. The top end of the outer coil pipe is fixedly connected with an exhaust pipe. Compared with the prior art, the release unit is arranged, steam enters the air inlet pipe and then drives the air flow blades to rotate, the vertical rod is driven to eccentrically rotate, a shifting block at the top of the release unit shifts a short rod, a center rod and fan plates annularly distributed on the outer surface of the center rod intermittently rotate, gaps are formed between the fan plates and the exhaust pipe when the fan plates rotate to discharge the steam, and the steam is prevented from flowing out when the fan plates are static; therefore, the residence time of the steam in the outer coil pipe is prolonged, indirect discharge of the steam is realized, the residence time of the steam in the outer coil pipe is prolonged, and the heat exchange efficiency of the steam and the kettle body is improved.

An inversion-formed double-walled tube includes an outer tube having an outer wall thickness, an inner tube disposed inside the outer tube and having an inner wall thickness, and a transition portion connecting the inner tube and the outer tube. In this arrangement, at least one of the inner and outer wall thicknesses varies along a length of the double-walled tube. The inversion-formed double-walled tube may be configured as an inversion tube type energy absorber and as an energy absorbing inversion tube assembly.

The invention discloses a tubular oxidation diffusion furnace, and relates to the technical field of oxidation diffusion furnaces, the tubular oxidation diffusion furnace comprises a thermal insulation layer, a heating assembly is arranged in the thermal insulation layer, an outer furnace tube is fixedly mounted in the thermal insulation layer, and an inner furnace tube is slidably mounted in the outer furnace tube; the inner end of the inner furnace tube is provided with a circular groove, and the outer end of the inner furnace tube is provided with an end cover. An air inlet and an air outlet are formed in the inner furnace tube, and an air inlet groove and an air outlet groove are formed in the outer furnace tube; the heat preservation layer is provided with an air inlet channel and an air outlet channel. A sealing plate is installed on the heat preservation layer in a sliding mode, and a through groove is formed in the sealing plate. The inner furnace tube can translate relative to the outer furnace tube, and when an operator opens the end cover to take out the quartz boat, the temperature of air overflowing from the inner furnace tube is low, so that hidden dangers cannot be caused to the personal safety of the operator. In the process that the inner furnace tube is pushed by external force to move inwards to be reset, hot air in the outer furnace tube returns to the inner furnace tube through the circular groove, heat needed for preheating before next oxidation operation is small, and energy consumption of equipment is reduced.

The invention discloses an integrated shell and tube type marine heat exchange device, and belongs to the technical field of marine heat exchange.The integrated shell and tube type marine heat exchange device is provided with jacking springs, a top plate, movable clamping blocks, reset springs, baffle plates and heat transfer tubes, after the multiple heat transfer tubes are all pulled away, the top plate is pushed to be tightly attached to a mounting base, and the top plate extrudes the jacking springs to deform in mounting through grooves; meanwhile, a fixed clamping hook is pushed to be clamped in a movable clamping groove to slide, a movable clamping block is driven to move to a clamping opening of the movable clamping groove, after a top plate is tightly attached to a mounting base, the fixed clamping hook is loosened, the movable clamping block is jacked up under the springback effect of a reset spring, and the movable clamping block and the movable clamping groove are connected in a clamped mode; and then the heat transfer pipe is inserted into the through holes of the mounting seat, the mounting end cover and the baffle plate, so that the jacking end ring is tightly attached to the top plate, the elastic clamping ring is inserted into the through hole of the mounting seat to extrude the elastic clamping ring to deform, and therefore, the heat transfer pipe is clamped and fixed in the through hole of the mounting seat, and the heat transfer pipe can be conveniently jacked out, pulled out or inserted and mounted.

The utility model discloses an air cooling module machine with a shell and tube evaporator, which relates to the field of evaporators, solves the problem that the existing traditional copper pipe has a poor cooling effect on fluid flowing in the copper pipe, and adopts the following scheme that the air cooling module machine comprises a frame, and an evaporator, a condenser and a compressor which are arranged on the inner side of the frame and are communicated with one another through an air cooling pipe group; a main body of the air cooling pipe set is a main copper pipe, and the air cooling pipe set is further provided with a branch pipe part and a sleeve part which are communicated with the main copper pipe. The branch pipe part is a copper pipe, and the radius of the branch pipe part is twice that of the main copper pipe; the sleeve part consists of an outer sleeve and an inner sleeve which are assembled inside and outside; according to the air-cooling module machine with the shell and tube evaporator, the service life of the air-cooling module machine can be prolonged by arranging the air-cooling tube set and setting the thickness of the branch tube part and the sleeve part, and the circulation area can be increased under the condition that the flow speed is not changed by arranging the radius of the air-cooling tube set, so that the temperature of fluid flowing in the air-cooling module machine is reduced by ten degrees compared with that of a traditional copper tube.

The utility model discloses a finned tube type heat exchanger for a hot galvanizing line, which comprises a shell, a smoke inlet and a smoke outlet are respectively arranged at two ends of the shell, and a plurality of air ducts arranged side by side are arranged between the smoke inlet and the smoke outlet. A plurality of fin heat exchange tube sets are arranged in the air flue at intervals in the smoke flowing direction, each fin heat exchange tube set is provided with a cold side inlet and a cold side outlet, all heat exchange tubes of the fin heat exchange tube sets are fixed to an upper tube plate and a lower tube plate, the heat exchange tubes are connected through U-shaped elbows, and the fin heat exchange tube sets share the upper tube plate and the lower tube plate. A plurality of fin heat exchange tube groups are inserted into the air duct from top to bottom; the upper tube plate is connected with an equipment flange on the shell through a gasket and a fastener; an expansion joint and an electric air valve are sequentially arranged at the air duct inlet in the smoke flowing direction, and the opening degree of the electric air valve is determined according to the smoke outlet temperature. The heat exchanger is convenient for ash removal, overhaul and maintenance, and solves the problem that the performance of the heat exchanger is reduced due to smoke side dust blockage.

1. Name of the Design Product: Reducing Coil Tube (End Tube Type - 2). 2. Use of the Design Product: Coil tube for steam sprayer. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Indicating the Design Key Points: 3D view of Design 1. 5. Design 1 is designated as the basic design.

The invention discloses a square tube type protective barrier and a using method thereof, and relates to the field of protective barriers, the square tube type protective barrier comprises a stand column, a cross rod, a positioning mechanism, a fixing mechanism and a splicing mechanism, the positioning mechanism is used for supporting and positioning the cross rod, the fixing mechanism is used for limiting and fixing the top of one end of the cross rod, and the splicing mechanism is arranged between the stand column and the cross rod; the connecting device is used for installing and connecting the stand column and the cross rod. By rotating a rotating rod, a nut seat drives a supporting block to move upwards together, the height of a cross rod is adjusted, a connecting rod is pulled to rotate, the connecting rod pulls a sliding block and a limiting block to move towards the back face and extrudes the front face of the cross rod, and then a movable block is rotated upwards around a mounting shaft; the inner walls of the movable blocks are attached to the upper surfaces of the transverse rods, the transverse rods are positioned and fixed, the stability of the transverse rods is improved, the transverse rods and the stand columns are conveniently installed and connected, and the installation efficiency of the protective handrail is improved.

The invention discloses a composite working medium condensation and separation device for a semi-closed S-CO2 power cycle system, relates to the technical field of composite working medium condensation and separation, and solves the problem of separation of gaseous water in a CO2 working medium. The device comprises a composite working medium inlet drain pipe box, a circulating water shell and a working medium outlet pipe box which are vertically arranged and sequentially connected, wherein a spiral heat exchange pipe bundle is arranged in the circulating water shell; the composite working medium inlet drain pipe box, the spiral heat exchange pipe bundle and the working medium outlet pipe box are sequentially communicated; the composite working medium inlet drain pipe box is provided with a composite working medium inlet connecting pipe and a drain outlet connecting pipe; a water supply inlet connecting pipe and a water supply outlet connecting pipe are arranged on the circulating water shell; a working medium outlet connecting pipe and a starting exhaust port connecting pipe are arranged on the working medium outlet pipe box, and a wire mesh demister is arranged in the working medium outlet pipe box. According to the invention, through the coiled tube type heat exchanger, circulating water is adopted as a cold source to cool and condense the composite working medium, and based on the condensation temperature difference of CO2 and H2O, efficient separation of two components of CO2 and H2O is completed.

The utility model discloses a steam generator, relates to the technical field of steam generators, and aims to solve the problems that fluid impacts a tube bundle, a heat exchange tube is easy to damage, the water content of steam is large, the effect of a demister is reduced along with time and the like in the design of the steam generator commonly used in the industry at present in the prior art. A tube pass inlet N1 and a tube pass outlet N2 are formed in the upper end and the lower end of the tube box 1 respectively, the tube pass inlet N1 is an inlet of hot fluid, the tube pass outlet N2 is an outlet of the hot fluid subjected to heat exchange, a liquid inlet N3 is formed in the side wall of the shell 3 and used for supplementing water to the steam generator, and a steam outlet N4 is formed in the top of the shell 3 and used for supplementing water to the steam generator. A wire mesh demister 10 is arranged on a steam outlet N4 of the shell 3 and used for further removing liquid water in steam, and the heat exchange tube bundle 4 is of a U-shaped tube type.

The invention provides a production process of a square tube type precast concrete member. The production process comprises a forming room, a curing system, a concrete transportation system, a concrete distribution system, a vibration extrusion die, a crown block and a transportation channel. By means of the production line, the component production efficiency can be greatly improved, vibration, extrusion and forming integration of the square tube type component is achieved, the cement consumption and carbon emission of concrete are reduced, the curing time of the concrete is shortened, automatic production of the square tube type prefabricated concrete component is achieved, and labor and cost are reduced.

1. Name of the design product: Reducing Coil Tube (Bottom Tube Type - 2). 2. Use of the design product: Coil tube for steam sprayer. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view of Design 1. 5. Design 1 is designated as the basic design.

1. The name of this design product: Shower rack (round tube type). 2. Purpose of this design product: used to place a bathroom shower head. 3. The key design point of this appearance design product lies in the overall shape of the product. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model provides a horizontal welded finned tube type electric furnace waste heat boiler which comprises a smoke inlet, a settling chamber, a turning channel, a plurality of evaporators, a plurality of economizers and a smoke outlet which are communicated in sequence, and heat exchange tubes are arranged in the turning channel, the evaporators and the economizers. The windward side and the leeward side of the heat exchange tube are each provided with a fin in a welded mode, and the fins are in a long strip shape and are arranged in the length direction of the heat exchange tube. When flue gas flows through the heat exchange tube, the flue gas does not completely wrap the heat exchange tube, but forms an oval flow field, and therefore the probability that the tube wall of the heat exchange tube is stained with dust is reduced. Therefore, from the consideration of a smoke flow field and economy, the electric furnace waste heat boiler is superior to an electric furnace waste heat boiler with a light tube structure and an electric furnace waste heat boiler with a spiral finned tube structure.

The utility model discloses a multi-tube type constant temperature and humidity test chamber, which comprises a test chamber main body, a clamp and a support frame, the clamp is arranged in the test chamber main body, the support frame is connected with the inner side of the clamp in an embedded manner, the other end of the support frame is fixedly connected with a support rod, and the other end of the support rod is fixedly connected with the inner wall of the test chamber main body. The whole supporting frame is in an inverted L shape, the lower end of the transverse face of the upper half portion of the supporting frame is fixedly connected with a spring rod, the bottom of the spring rod is fixedly connected with a pressing plate, one side of the vertical portion of the lower half portion of the supporting frame is fixedly connected with a hanging buckle, and the interior of the hanging buckle is fixedly connected with a pressing rod. According to the device, the operation space of workers is increased, meanwhile, the clamp can be rapidly fixed in the test bin, and under the condition that a test object is clamped by the clamp from the upper end and the lower end, feedback that multiple faces of the test object are exposed in a constant-temperature and constant-humidity environment at the same time can still be known.

The application relates to the field of laser cladding technology and discloses a long tube part inner and outer laser cladding equipment, which comprises a base, an outer cladding mechanism and an inner cladding mechanism, one end of the base is provided with a detachable main shaft, the outer cladding mechanism is located on one side of the base and is in sliding fit with the base, the upper end of the base is provided with a slidable bracket, a pipe clamping mechanism, a follow-up supporting mechanism and the inner cladding mechanism, the bracket supports the part, the pipe clamping mechanism is sleeved on the outer side of the part to clamp and drive the part to rotate, the inner cladding mechanism comprises an inner cladding head, the follow-up supporting mechanism is close to the end of the part and adjusts the height along with the jumping of the part, and the follow-up supporting mechanism supports when the inner cladding head processes the end of the part; the application solves the problem that the existing technology adopts end driving and is prone to causing large radial jumping amplitude of the pipe, thereby improving the stability of the part, improving the processing efficiency and the cladding quality.

The invention discloses a production method of an embedded pipe type ribbed laminated slab, which comprises the following steps: 1) arranging a long line platform, and brushing a release agent on the long line platform; (2) prestressed steel bars are arranged on the long-line platform, and prestress is tensioned; (3) arranging a plurality of rows of embedded pipe strings above the prestressed reinforcements; (4) a slip form machine corresponding to the slip form is adopted to move along the long line platform, and concrete is poured; and (5) after the laminated slab is maintained for preset time, the laminated slab on the long line platform is cut, and the pre-embedded pipe type ribbed laminated slab with the preset length is obtained. The long-line platform is adopted for production, the prestressed steel bars and the embedded pipe strings are preset, automatic laying of the prestressed steel bars and the embedded pipe strings is facilitated, one-time forming is achieved through the slip form machine, the production process is simplified, cutting is conducted according to the actual size requirement after maintenance is completed, the production period is shortened, additional trepanning or secondary assembling is not needed, and the production cost is reduced. The production efficiency is high, and the flexibility is improved.

The invention discloses a water pipe type two-return-stroke energy-saving and emission-reducing superheater assembly of a traditional boiler, and relates to the superheater assembly researched and developed according to the wide-capacity radiation heat exchange concept of a boiler hearth and the physical phenomenon outside the field (see the specification in details) capable of generating extremely few nitrogen oxides, and a traditional boiler body with the modified hearth. After the flange pipelines are connected and combined, the technical advantages brought by obvious technical characteristics are derived: the heat efficiency is improved by about 6-8%, the steel consumption is reduced by about 20%, and the cost is reduced by 30% due to the application of the boiler hearth tolerance radiation heat exchange concept; forced circulation medium water is in a water pipe of the two-return-stroke energy-saving emission-reducing superheater assembly, the heat exchange second flow speed is increased to about 1.5 m, the technical characteristic completely meets the requirement of physical phenomena outside the field capable of generating extremely few nitric oxides, and the purpose of ultralow nitrogen emission of the nitric oxides smaller than or equal to 15 / 25 milligrams is achieved; meanwhile, other technical problems of the product in the background technology are solved.

The utility model relates to a large-flow energy-saving coil pipe type heat exchanger which comprises an energy-saving heat exchange assembly, a matching auxiliary assembly is arranged at the inner end of the energy-saving heat exchange assembly, a water stirring and flow mixing assembly is arranged in the matching auxiliary assembly, and the problems that the inner wall of an existing pipe lacks an effective enhanced heat exchange structure, the flowing state of fluid in the pipe is single, the turbulence degree is low, and the heat exchange efficiency is high are solved. In order to solve the problem that the overall heat exchange efficiency is difficult to improve due to the fact that heat exchange mainly depends on natural convection, a water stirring and flow mixing assembly is arranged, when fluid flows in an inner coil pipe, a motor is started to be matched with a vertical electric guide rail, and a plurality of multi-dimensional rotating blades connected with a displacement shaft piece can vertically move up and down in the axial direction of a vertical rod; the elastic accessory is connected with the shakable hollow-out ball, the metal outer layer drives the shakable hollow-out ball to move correspondingly under the action of the magnetic field of the strong magnetic end block, and the elastic accessory plays a role in buffering impact force and guaranteeing flexible movement of the shakable hollow-out ball.

The present invention relates to a U-shaped tube extraction device and a method for using the same. The U-shaped tube extraction device comprises a U-shaped pipe, a stirring device and a separation device; the U-shaped pipe comprises a first vertical section, a transverse section and a second vertical section which are connected in sequence; the U-shaped pipe further comprises an extraction raw material inlet arranged on the first vertical section; the stirring device is located in the transverse section of the U-shaped pipe; the separation device is located above the U-shaped pipe, and the lower part of the separation device is respectively communicated with the tops of the first vertical section and the second vertical section; the separation device comprises a light phase discharge port and a heavy phase discharge port, and the light phase discharge port and the heavy phase discharge port are arranged on the side part of the separation device. In the present invention, the separation device is arranged above the U-shaped pipe, so that the whole device forms a circulating tube structure, the residence time of the mixed liquid can be controlled, the single-stage extraction efficiency is improved, and at the same time, the floor area of the device is greatly reduced, which is easy for industrial scale-up.

The application relates to the technical field of heat exchange, and discloses a column-tube type heat exchanger for fluid heat exchange, which comprises a shell, the inside of the shell is uniformly distributed with inner mounting plates, the outside of the inner mounting plates is rotationally connected with outer mounting plates, the inside of the shell is provided with two inner end plates, the outside of the inner end plates is rotationally connected with outer end plates, the outside of one side of the outer end plates is fixedly connected with a ratchet wheel, the inside of the other side of the outer end plates is rotationally connected with a fixing frame, the upper end of a driving bin two is slidably connected with a sliding shaft, and the upper end of the sliding shaft is fixedly connected with a limiting block. Through the relative rotation of the outer mounting plates and the inner mounting plates, the window area and the flow position of the clear water flow channel formed between the outer mounting plates and the inner mounting plates continuously and dynamically change, the clear water in the shell is forced to continuously change the flow direction, the clear water is prevented from long-term flowing through the local heat exchange area along the fixed flow channel, the outer surfaces of all the heat exchange tubes can be fully contacted with the low-temperature clear water, and balanced and deep heat exchange of the whole tube area is realized.

The utility model discloses a composite tube plate finned tube type protective gas cooler, which relates to the technical field of protective gas coolers, and comprises a water inlet / outlet flange, a water chamber, an upper layer tube plate, a lower layer tube plate, a square flange, a plurality of heat exchange tubes and rolling type annular fins, each heat exchange tube is an integrally-formed U-shaped tube, and a plurality of through openings used for being connected with the heat exchange tubes are formed in the upper-layer tube plate. The heat exchange tube is an integrally-formed U-shaped tube, the whole tube is free of welding spots, structural blockage and cracking are avoided, the lower-layer tube plate, the composite linkage protection plate and the upper-layer tube plate are designed at the position where the heat exchange tube is connected with the water chamber, stability of the heat exchange tube is guaranteed in an external welding mode, meanwhile, a cavity is formed through the composite linkage protection plate, and the heat exchange tube is more stable. And the leakage detection assembly is arranged, leakage between the heat exchange pipe and the water chamber is monitored, and safety is high.

The utility model provides a tubular conveyer belt anti-deviation device which comprises a first roller, a second roller, a third roller, a fourth roller, a fifth roller and a sixth roller which are arranged on the same plane in an s shape, the first roller, the third roller and the sixth roller are arranged in parallel, the second roller is vertically arranged between the first roller and the third roller, and the fourth roller is arranged between the fifth roller and the sixth roller. And the fourth roller and the fifth roller are sequentially arranged between the third roller and the sixth roller. According to the deviation preventing device for the tubular conveying belt, due to the fact that the deviation preventing device is arranged on the upper carrier roller of the carrier roller frame of the circular tube type conveyor rack, the edge portion of the tubular conveying belt can be limited, when the tubular conveying belt deflects, the second roller and the fifth roller can prevent the edge portion from continuing to twist, and therefore deviation of the tubular conveying belt is prevented. And the problems of pipe twisting, material spilling, belt tearing and belt stacking caused by deviation are avoided.

The utility model discloses a fire detection tube type temperature-sensing self-starting fire extinguishing device which comprises a tube body, sleeves used for shrinking towards the axial lead direction are arranged on the outer walls of the two ends of the tube body in a sleeved mode, sealing valve bodies are arranged at the two ends of the tube body, and the sleeves are tightly pressed on the end faces of the tube body. A plurality of convex hulls at equal intervals are evenly distributed on the inner wall of the sleeve with a circle point as the axis and abut against the outer wall of the pipe body, a protective cover is arranged on the outer wall of the sealing valve body, and the sealing valve body is further provided with detachable installation pieces embedded into the two sides of the protective cover. A plurality of convex hulls are embedded in the inner wall of the pipe body, so that the friction force and the locking force between the sleeve and the pipe body are effectively enhanced, the connection looseness caused by factors such as oxidation and humidity is prevented, and the fire extinguishing agent is effectively prevented from leaking; through the design of the detachable mounting piece, screw fixing or magnetic attraction mounting is supported, and practicability and convenience are achieved; in addition, the protective cover also plays a role in increasing the creepage distance and preventing fire.