Integrated experimental platform for tubular heat exchange products

Abstract

The application discloses a comprehensive experiment platform for tubular heat exchange products, which comprises a first fan, a wind heating device, a feeding device, a rectifying device, a testing module, a dust removal device, a second fan, a lifting device, a water-water heat exchange testing module, a hot water circulating assembly and a cold water circulating assembly. The above technical scheme integrates a water-water heat exchange experiment device, a water-gas heat exchange experiment device, a gas-water heat exchange experiment device, a gas-gas heat exchange experiment device, a dust accumulation and abrasion experiment device, a dust accumulation and abrasion hot state experiment device and a dust accumulation and abrasion different wall temperature experiment device, and the comprehensive experiment platform is simple and reliable, has good universality, compatibility and integration, and reduces the development cost of a simulation experiment device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of simulation experiment devices, in particular to a comprehensive experiment platform for tubular heat exchange products. BACKGROUND

[0002] Please refer to Chinese patent CN201920862258.0, the Dingbao tube is a heat exchange tube, the cylindrical spiral micro-ribes thereon can increase the inner wall heat exchange area, the ball concave can further improve the heat exchange effect, and the ball concave is arranged on the cylindrical spiral line, and the cylindrical spiral line where the ball concave is arranged is opposite in rotation direction to the cylindrical spiral micro-ribes, so that the effect of better strengthening the boundary layer disturbance to the fluid in the tube and destroying the laminar flow bottom layer can be achieved, thereby further improving the heat exchange coefficient.

[0003] Please refer to Chinese patent CN201920862259.5, the vortex tube is also a heat exchange tube, which can form a zooming effect along the axial tube inner diameter, and at the same time make the medium in the tube advance in a spiral shape, so that the inner wall of the tube is less likely to stick to the flowing medium and less likely to scale, thereby improving the heat exchange effect, and the ball concave is arranged on the cylindrical spiral line, which is convenient to process.

[0004] The tube bank is a heat exchange tube bank represented by the Dingbao tube and the vortex tube. Please refer to Figure 10 The Dingbao tube economizer is a gas-water heat exchanger based on the Dingbao tube bank. Please refer to Figure 11 The vortex tube air preheater is a gas-gas heat exchanger based on the vortex tube bank. The shell-and-tube heat exchanger is also a common water-water heat exchanger based on the heat exchange tube bank.

[0005] At present, there is no comprehensive experiment platform that can be used for simulating the ash deposition and wear of the heat exchange tube represented by the Dingbao tube and the vortex tube, testing the heat exchange and resistance of the tube bank, testing the heat exchange and resistance of the Dingbao tube economizer, testing the heat exchange and resistance of the vortex tube air preheater, and testing the heat exchange and resistance of the shell-and-tube heat exchanger.

[0006] It is urgent to solve the above problems.

[0007] To solve the above technical problems, the present application provides a comprehensive experiment platform for tubular heat exchange products.

[0008] The technical scheme is as follows:

[0009] The utility model relates to a kind of comprehensive experimental platform for tubular heat exchange product, its main point is that including first fan W001, air heating device W002, feeding device W003, rectifier W004, test module W005, dust removal device W006, second fan W007, material lifting device W008, water-water heat exchange test module W009, hot water circulation assembly and cold water circulation assembly;

[0010] The first fan W001, rectifier W004 and test module W005 are sequentially communicated by pipeline to form a first cold air passage connected to the external environment at both ends;The first fan W001, air heating device W002, rectifier W004 and test module W005 are sequentially and circularly communicated by pipeline to form a hot air loop;The second fan W007 and rectifier W004 are sequentially communicated with the heat exchange pipe of test module W005 to form a second cold air passage connected to the external environment at both ends;The first fan W001, rectifier W004, test module W005 and dust removal device W006 are sequentially communicated by pipeline to form a dusting and abrasion cold air passage connected to the external environment at both ends;The first fan W001, air heating device W002, rectifier W004, test module W005 and dust removal device W006 are sequentially and circularly communicated by pipeline to form a dusting and abrasion hot air loop;

[0011] The heat exchange pipe of test module W005 is circularly communicated with hot water circulation assembly by pipeline to form a water heating circulation loop;The heat exchange pipe of test module W005 is circularly communicated with cold water circulation assembly by pipeline to form a cooling water circulation loop;The heat exchange pipe of water-water heat exchange test module W009 is circularly communicated with hot water circulation assembly by pipeline to form a first water-water heat exchange circulation loop;Water-water heat exchange test module W009 is circularly communicated with cold water circulation assembly by pipeline to form a second water-water heat exchange circulation loop;

[0012] The material lifting device W008 is used to transfer the material recovered by the dust removal device W006 to the feeding device W003, in the dusting and abrasion cold air passage or the dusting and abrasion hot air loop, the feeding device W003 is communicated with the pipeline before the air inlet of rectifier W004 through feeding pipeline A004, so that the material can be circularly transferred between the material lifting device W008, the feeding device W003, the rectifier W004 and the dust removal device W006, to form a material circulation loop;

[0013] The first water-water heat exchange circulation loop and the second water-water heat exchange circulation loop can constitute a water-water heat exchange experimental device, the first cold air passage and the water heating circulation loop can constitute a water-air heat exchange experimental device, the hot air loop and the cooling water circulation loop can constitute a gas-water heat exchange experimental device, the hot air loop and the second cold air passage can constitute a gas-gas heat exchange experimental device, the ash deposition and wear cold air passage and the material circulation loop can constitute an ash deposition and wear experimental device, the ash deposition and wear hot air loop and the material circulation loop can constitute an ash deposition and wear hot state experimental device, and the ash deposition and wear cold air passage, the water heating circulation loop and the material circulation loop can constitute an ash deposition and wear different wall temperature experimental device.

[0014] Preferably, the ash deposition and wear hot state experimental device further comprises a cooling water circulation loop.

[0015] With the above design, the outlet air temperature of the test module W005 can be effectively reduced, and the dust collector W006 can be prevented from being burnt out.

[0016] Preferably, a hot air temperature sensor T1 is arranged on a pipeline connecting the air heating device W002 and the rectifier device W004, and an outlet air temperature sensor T2 is arranged on a pipeline connecting the test module W005 and the dust removal device W006.

[0017] With the above design, the outlet air temperature of the air heating device W002 can be measured by arranging the hot air temperature sensor T1, so as to accurately control the start and stop of the air heating device W002 and reduce the energy consumption of the air heating device W002; the cooling water circulation loop (i.e., the cold water circulation pump WA003) can be started adaptively based on the temperature detected by the outlet air temperature sensor T2, so as to prevent the dust collector from being burnt out and reduce the energy consumption.

[0018] Preferably, the cold water circulation assembly comprises a cooling tower WA005, a cold water tank WA004 and a cold water circulation pump WA003, and the heat exchange pipes of the test module W005 are in circulation connection with the cooling tower WA005, the cold water tank WA004 and the cold water circulation pump WA003 through pipelines to constitute a cooling water circulation loop.

[0019] With the above design, the device is simple, reliable and efficient.

[0020] Preferably, the hot water circulation assembly comprises a hot water tank WA001 and a hot water circulation pump WA002, and the heat exchange pipes in the test module W005 are in circulation connection with the hot water tank WA001 and the hot water circulation pump WA002 through pipelines to constitute a water heating circulation loop.

[0021] With the above design, the device is simple, reliable and efficient.

[0022] As preferred: the hot water tank WA001 is provided with a water temperature sensor T3.

[0023] With the above design, the water temperature can be controlled constantly, thereby improving the precision of controlling the temperature of the heat exchange pipe wall.

[0024] As preferred: a dust concentration sensor D1 is arranged on the pipeline communicating with the air inlet of the dust removal device W006, and a dust concentration sensor D2 is arranged on the pipeline communicating with the air outlet of the dust removal device W006.

[0025] With the above design, the dust concentration of the air outlet of the test module W005 and the dust concentration of the air outlet of the dust removal device W006 can be measured, so as to monitor the dust removal capacity of the dust removal device W006 in time and avoid the problem of exceeding the standard emission.

[0026] As preferred: an air inlet flow meter F1 is arranged on the pipeline communicating with the air outlet of the first fan W001, an air outlet flow meter F2 is arranged on the pipeline communicating the air outlet of the dust removal device W006 with the external environment, and an air inlet flow meter F3 is arranged on the pipeline communicating with the air outlet of the second fan W007.

[0027] With the above design, the air inlet flow meter F1 can accurately measure the air outlet flow of the first fan W001, thereby ensuring the accurate control of the simulated experimental environment; the maximum flow of the air outlet flow meter F2 is greater than that of the air inlet flow meter F1, so that the air inlet flow meter F1 can be closed and the air outlet flow meter F2 can be started when doing large air volume test such as wear test, and the air inlet flow meter F1 with higher precision can be started when doing other tests with smaller air volume, thereby ensuring the accurate control of the simulated experimental environment; the air inlet flow meter F3 can accurately measure the air outlet flow of the second fan W007.

[0028] As preferred: the device further comprises a first differential pressure transmitter P1 and a second differential pressure transmitter P2, two ends of the first differential pressure transmitter P1 are respectively connected with the pipelines of the air inlet and the air outlet of the test module W005, and two ends of the second differential pressure transmitter P2 are respectively connected with the water outlet and the water inlet of the heat exchange pipe of the test module W005.

[0029] With the above design, the first differential pressure transmitter P1 can accurately measure the pressure difference between the air inlet and the air outlet of the test module W005, and the second differential pressure transmitter P2 can accurately measure the pressure difference between the water outlet and the water inlet of the heat exchange pipe.

[0030] As preferred: the pipeline in communication with the first fan W001 air inlet is the air inlet pipeline A001; in the dust accumulation and wear cold air passage and the dust accumulation and wear hot air loop, the pipeline between the first fan W001 air outlet and the dust removal device W006 air inlet is the air conveying pipeline A002; the pipeline in communication with the dust removal device W006 air outlet is the air exhaust pipeline A003; the air inlet pipeline A001 and the air exhaust pipeline A003 can be in communication with the external environment respectively, and can be connected through the hot air recycling pipeline A005; the pipeline in the cold water circulating assembly is the cooling pipeline A006; the pipeline in the hot water circulating assembly is the hot water pipeline A007; the air conveying pipeline A002 between the test module W005 and the dust removal device W006 is connected with the air exhaust pipeline A003 through the direct discharge pipeline A008; the pipeline in the second cold air passage is the cold air pipeline A009, at least one valve is arranged on the air inlet pipeline A001, the air conveying pipeline A002, the air exhaust pipeline A003, the hot air recycling pipeline A005, the direct discharge pipeline A008 and the cold air pipeline A009, the water inlet end of the cooling pipeline A006 and the water inlet end of the hot water pipeline A007 are connected with the heat exchange pipe water outlet of the water replacement pipe arranged in the test module W005 through a three-way valve, and the water outlet end of the cooling pipeline A006 and the water outlet end of the hot water pipeline A007 are connected with the heat exchange pipe water inlet of the water replacement pipe arranged in the test module W005 through a three-way valve.

[0031] By adopting the above design, the design is reasonable and ingenious.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] The comprehensive experimental platform for the tubular heat exchange product can test the heat exchange and resistance of the tubular heat exchange product such as the tubular heat exchanger through the water-water heat exchange experimental device, test the heat exchange and resistance of the tube bank through the water-gas heat exchange experimental device, test the heat exchange and resistance of the tubular heat exchange product such as the dimple tube coal saving device through the gas-water heat exchange experimental device, test the heat exchange and resistance of the tubular heat exchange product such as the vortex tube air preheater through the gas-gas heat exchange experimental device, when the feeding device transports fine dust through the feeding pipeline to the air conveying pipeline, after the simulation experimental device is operated for a set time, the heat exchange tube in the test module is visually inspected and weighed, the dust deposition of the heat exchange tube can be obtained, and the dust deposition resistance of the heat exchange tube can be evaluated, when the feeding device transports coarse and hard particles through the feeding pipeline to the air conveying pipeline, after the simulation experimental device is operated for a set time, the heat exchange tube in the test module is visually inspected and weighed, the abrasion of the heat exchange tube can be obtained, and the abrasion resistance of the heat exchange tube can be evaluated; the comprehensive experimental platform is simple and reliable, has good universality, compatibility and integration, and reduces the development cost of the simulation experimental device. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the comprehensive experimental platform;

[0035] Figure 2 is a schematic diagram of the water-water heat exchange experimental device;

[0036] Figure 3 is a schematic diagram of the water-gas heat exchange experimental device;

[0037] Figure 4 is a schematic diagram of the gas-water heat exchange experimental device;

[0038] Figure 5 is a schematic diagram of the gas-gas heat exchange experimental device;

[0039] Figure 6 is a schematic diagram of the dust abrasion experimental device;

[0040] Figure 7 is a schematic diagram of the dust abrasion hot state experimental device;

[0041] Figure 8 is a schematic diagram of the dust abrasion different wall temperature experimental device;

[0042] Figure 9 is a structural schematic diagram of a core component of the dust abrasion hot state experimental device;

[0043] Figure 10 is a structural schematic diagram of the dimple tube coal saving device;

[0044] Figure 11 The structure diagram of the vortex tube air preheater. DETAILED DESCRIPTION

[0045] The application is further described below in conjunction with the embodiments and drawings.

[0046] As Figures 1 to 8 shown in the drawings, the comprehensive experimental platform for tubular heat exchange products mainly comprises a first fan W001, a wind heating device W002, a feeding device W003, a rectifying device W004, a test module W005, a dust removal device W006, a second fan W007, a material lifting device W008, a water-water heat exchange test module W009, a hot water circulation assembly and a cold water circulation assembly.

[0047] The hot water circulation assembly comprises a hot water tank WA001 and a hot water circulation pump WA002. The cold water circulation assembly comprises a cooling tower WA005, a cold water tank WA004 and a cold water circulation pump WA003.

[0048] The wind heating device W002 preferably adopts a hot blast stove with a power of 100 kW and 10 groups of heating pipes, which is simple and reliable and has a high heating efficiency for wind.

[0049] The rectifying device W004 is a rectifying grid, which can rectify the air supply in the air conveying pipeline A002 and is stable, reliable and durable.

[0050] The dust removal device W006 is a bag-type dust collector with a maximum air volume of 6000 m 3 / h, which can reliably filter out small dust and coarse particles, has good versatility, can withstand large air volume, has high reliability and is relatively low in cost.

[0051] The material lifting device W008 is a material lifting machine or a gantry crane, which has a strong vertical take-off and landing carrying capacity.

[0052] The feeding device W003 is a hopper with a screw conveyor, which can accurately control the conveying amount of the material.

[0053] The first fan W001 preferably adopts a variable frequency fan with a total pressure of 3000 pa and a maximum working condition flow of 5000 m 3 / h, which is equipped with a variable frequency motor and can provide large air pressure and effectively reduce energy consumption.

[0054] Similarly, the second fan W007 also preferably adopts a variable frequency fan with a total pressure of 3000 pa and a maximum working condition flow of 5000 m 3 / h, which is equipped with a variable frequency motor and can provide large air pressure and effectively reduce energy consumption.

[0055] The wind heating device W002 preferably adopts a hot blast stove with a power of 100 kW, and is provided with 10 groups of heating pipes, which is simple and reliable, and has high heating efficiency for the wind.

[0056] The hot water tank WA001 is provided with a water temperature sensor T3, and preferably adopts a hot water constant temperature tank with a 50 kW heater and 10 groups of heating pipes, which cooperates with the water temperature sensor T3 to realize constant temperature control of the water temperature, thereby improving the precision of controlling the temperature of the wall of the heat exchange pipe.

[0057] The first fan W001, the rectifier device W004 and the test module W005 are sequentially connected through pipelines to form a first cold air passage connected to the external environment at both ends. Specifically, the air inlet of the first fan W001 is connected to the external environment through an air inlet pipeline A001. The test module W005 is sequentially connected to the external environment through a direct discharge pipeline A008 and an air outlet pipeline A003. The first fan W001, the rectifier device W004 and the test module W005 are connected through a wind conveying pipeline A002. The first fan W001 draws cold air from the external environment, which is sequentially discharged to the external environment through the rectifier device W004 and the test module W005.

[0058] The first fan W001, the wind heating device W002, the rectifier device W004 and the test module W005 are sequentially connected through pipelines to form a hot air loop. Specifically, the air inlet pipeline A001 connected to the air inlet of the first fan W001 is connected to the hot air recycling pipeline A005. The test module W005 is sequentially connected to the hot air recycling pipeline A005 through the direct discharge pipeline A008 and the air outlet pipeline A003. The first fan W001, the wind heating device W002, the rectifier device W004 and the test module W005 are connected through the wind conveying pipeline A002. The first fan W001 sends cold air to the wind heating device W002 for heating, and then sequentially passes through the rectifier device W004 and the test module W005, and finally circulates back to the first fan W001.

[0059] The second fan W007 and the heat exchange pipe of the rectifier device W004 and the test module W005 are sequentially connected to form a second cold air passage connected to the external environment at both ends. The second fan W007, the rectifier device W004 and the heat exchange pipe of the test module W005 are connected through a cold air pipeline A009. The cold air pipeline A009 connected to the air inlet of the second fan W007 is connected to the external environment. The cold air pipeline A009 connected to the air outlet of the heat exchange pipe of the heat exchange pipe of the test module W005 is connected to the external environment. The second fan W007 draws cold air from the external environment, which is sequentially discharged to the external environment through the rectifier device W004 and the heat exchange pipe of the test module W005.

[0060] The first fan W001, the rectifier device W004, the test module W005 and the dust removal device W006 are sequentially communicated by pipes to form a dusting and abrasion cold air passage connected to the external environment at both ends. Specifically, the air inlet of the first fan W001 is communicated with the external environment through the air inlet pipe A001. The air outlet of the dust removal device W006 is communicated with the external environment through the air outlet pipe A003. The first fan W001, the rectifier device W004, the test module W005 and the dust removal device W006 are communicated through the air conveying pipe A002. The first fan W001 extracts cold air from the external environment and then discharges the cold air to the external environment through the rectifier device W004, the test module W005 and the dust removal device W006 in sequence.

[0061] The first fan W001, the air heating device W002, the rectifier device W004, the test module W005 and the dust removal device W006 are sequentially and circularly communicated by pipes to form a dusting and abrasion hot air loop. Specifically, the air inlet pipe A001 connected to the air inlet of the first fan W001 is communicated with the hot air recycling pipe A005. The air outlet pipe A003 connected to the air outlet of the dust removal device W006 is communicated with the hot air recycling pipe A005. The first fan W001, the air heating device W002, the rectifier device W004, the test module W005 and the dust removal device W006 are communicated through the air conveying pipe A002. The first fan W001 sends cold air to the air heating device W002 for heating, and then the cold air sequentially passes through the rectifier device W004, the test module W005 and the dust removal device W006, and finally circulates back to the first fan W001.

[0062] Further, the test module W005 is provided with an observation window, so that the dusting and abrasion of the heat exchange pipe can be observed online, so that the heat exchange pipe can be weighed when the preset condition is observed, and repeated shutdown is avoided, thereby improving the experimental efficiency.

[0063] The heat exchange pipe of the test module W005 and the hot water circulation assembly are circularly communicated by pipes to form a water heating circulation loop. Specifically, the heat exchange pipe in the test module W005, the hot water tank WA001 and the hot water circulating pump WA002 are circularly communicated by the hot water pipe A007 to form a water heating circulation loop. The hot water circulating pump WA002 pumps the hot water flowing out of the hot water tank WA001 into the heat exchange pipe of the test module W005, and then flows back to the hot water tank WA001.

[0064] The heat exchange pipes of the test module W005 are connected in circulation with the cooling water circulating assembly through pipes to form a cooling water circulation loop. Specifically, the heat exchange pipes of the test module W005 are connected in circulation with the cooling tower WA005, the cold water tank WA004 and the cold water circulating pump WA003 through the cooling pipe A006 to form a cooling water circulation loop. The water flowing out of the heat exchange pipes of the test module W005 is first cooled in the cooling tower WA005, then flows back to the cold water tank WA004, and finally is pumped back to the heat exchange pipes of the test module W005 by the cold water circulating pump WA003.

[0065] The heat exchange pipes of the water-water heat exchange test module W009 are connected in circulation with the hot water circulating assembly through pipes to form a first water-water heat exchange circulation loop. Specifically, the heat exchange pipes of the water-water heat exchange test module W009 are connected in circulation with the hot water tank WA001 and the hot water circulating pump WA002 through the hot water pipe A007 to form a first water-water heat exchange circulation loop. The hot water circulating pump WA002 pumps the hot water flowing out of the hot water tank WA001 into the heat exchange pipes of the water-water heat exchange test module W009, and then flows back to the hot water tank WA001.

[0066] The water-water heat exchange test module W009 is connected in circulation with the cold water circulating assembly through pipes to form a second water-water heat exchange circulation loop. Specifically, the water-water heat exchange test module W009 is connected in circulation with the cooling tower WA005, the cold water tank WA004 and the cold water circulating pump WA003 through the cooling pipe A006 to form a second water-water heat exchange circulation loop. The water flowing out of the water-water heat exchange test module W009 is first cooled in the cooling tower WA005, then flows back to the cold water tank WA004, and finally is pumped back to the water-water heat exchange test module W009 by the cold water circulating pump WA003.

[0067] The material lifting device W008 is used to transfer the material recovered by the dust removal device W006 to the material feeding device W003. In the dust accumulation and wear cold air passage or the dust accumulation and wear hot air loop, the material feeding device W003 is connected to the air conveying pipe A002 before the air inlet of the flow regulating device W004 through the material feeding pipe A004, so that the material can circulate between the material lifting device W008, the material feeding device W003, the flow regulating device W004, the test module W005 and the dust removal device W006 in sequence to form a material circulation loop. Specifically, the material recovered in the dust removal device W006 is transferred to the material feeding device W003 by the material lifting device W008, the material feeding device W003 feeds the material to the air conveying pipe A002 through the material feeding pipe A004, and the material is driven by the air to pass through the flow regulating device W004 and the test module W005 in sequence, and finally is recovered by the dust removal device W006.

[0068] A hot air temperature sensor T1 is arranged on the pipeline connecting the air heating device W002 and the rectifying device W004. The hot air temperature sensor T1 can measure the temperature of the air outlet of the air heating device W002, so as to accurately control the start and stop of the air heating device W002 and reduce the energy consumption of the air heating device W002.

[0069] An air outlet temperature sensor T2 is arranged on the pipeline connecting the test module W005 and the dust removal device W006. The air outlet temperature sensor T2 can detect the temperature, so as to adaptively start the cooling water circulation loop (i.e., the cooling water circulation pump WA003), which can avoid burning out the dust removal device W006 and reduce the energy consumption.

[0070] The hot water pipeline A007 is provided with a hot water inlet temperature sensor T4 at a section of the hot water pipeline A007 supplying water to the hot water tank WA001. The hot water pipeline A007 is provided with a hot water outlet temperature sensor T5 at a section of the hot water pipeline A007 discharging water from the hot water tank WA001.

[0071] The cooling pipeline A006 is provided with a cold water inlet temperature sensor T6 at a section of the cooling pipeline A006 supplying water to the cold water tank WA004. The cooling pipeline A006 is provided with a cold water outlet temperature sensor T7 at a section of the cooling pipeline A006 discharging water from the cold water tank WA004.

[0072] The cold air pipeline A009 is provided with a pipeline inlet air temperature sensor T8 at a section of the cold air pipeline A009 supplying air to the water exchange pipe in the test module W005. The cold air pipeline A009 is provided with a pipeline outlet air temperature sensor T9 at a section of the cold air pipeline A009 discharging air from the water exchange pipe in the test module W005.

[0073] The two ends of the first differential pressure transmitter P1 are respectively connected to the pipelines connecting the air inlet and outlet of the test module W005, and the first differential pressure transmitter P1 can accurately measure the pressure difference between the air inlet and outlet of the test module W005.

[0074] The two ends of the second differential pressure transmitter P2 are respectively connected to the heat exchange pipe water outlet and the heat exchange pipe water inlet of the water exchange pipe in the test module W005, and the second differential pressure transmitter P2 can accurately measure the pressure difference between the heat exchange pipe water outlet and the heat exchange pipe water inlet of the water exchange pipe.

[0075] The two ends of the cold water differential pressure transmitter P3 are respectively connected to the cold water return interface and the cold water inlet interface of the water-water heat exchange test module W009, and the cold water differential pressure transmitter P3 can accurately measure the pressure difference between the cold water return interface and the cold water inlet interface of the water-water heat exchange test module W009.

[0076] The two ends of the hot water differential pressure transmitter P4 are respectively communicated with the hot water return interface and the hot water inlet interface of the heat exchange pipe arranged in the water-water heat exchange test module W009, and the hot water differential pressure transmitter P4 can accurately measure the pressure difference of the hot water return interface and the hot water inlet interface of the heat exchange pipe arranged in the water-water heat exchange test module W009.

[0077] The two ends of the air differential pressure transmitter P5 arranged in the pipe are respectively communicated with the air inlet and the air outlet of the heat exchange pipe of the water exchange pipe arranged in the test module W005, and the air differential pressure transmitter P5 can accurately measure the pressure difference of the air inlet and the air outlet of the heat exchange pipe of the water exchange pipe arranged in the test module W005.

[0078] The air inlet flow meter F1 is arranged on the air inlet pipeline A002 connected with the air outlet of the first fan W001, so that the air inlet flow in the air inlet pipeline A002 can be accurately measured, and the simulation experiment environment can be accurately controlled.

[0079] The air outlet flow meter F2 is arranged on the air outlet pipeline A003, and the maximum flow of the air outlet flow meter F2 is greater than that of the air inlet flow meter F1, so that when the large air volume test such as the wear test is performed, the air inlet flow meter F1 can be closed and the air outlet flow meter F2 can be started. When other air volume is small, the air inlet flow meter F1 with higher accuracy is started, so that the simulation experiment environment can be accurately controlled.

[0080] The air inlet flow meter F3 is arranged on the cold air pipeline A009 connected with the air outlet of the second fan W007, so that the air inlet flow in the cold air pipeline A009 can be accurately measured, and the simulation experiment environment can be accurately controlled.

[0081] The air outlet dust concentration sensor D1 is arranged on the air inlet pipeline A002 between the test module W005 and the dust removal device W006, so that the dust concentration of the air outlet of the test module W005 can be measured, and the conveying speed of the feeding device W003 can be adjusted adaptively. The air outlet dust concentration sensor D2 is arranged on the air outlet pipeline A003, so that the dust concentration of the air outlet of the dust removal device W006 can be measured, the dust removal capacity of the dust removal device W006 can be monitored in time, and the problem of excessive emission can be avoided.

[0082] At least one valve is arranged on the air inlet pipeline A001, the air inlet pipeline A002, the air outlet pipeline A003, the hot air recycling pipeline A005, the direct discharge pipeline A008 and the cold air pipeline A009. The inlet end of the cooling pipeline A006 and the inlet end of the hot water pipeline A007 are communicated with the water outlet of the heat exchange pipe of the water exchange pipe arranged in the test module W005 through the three-way valve, and the outlet end of the cooling pipeline A006 and the outlet end of the hot water pipeline A007 are communicated with the water inlet of the heat exchange pipe of the water exchange pipe arranged in the test module W005 through the three-way valve.

[0083] Please refer to Figure 2 , the first water-water heat exchange circulation loop and the second water-water heat exchange circulation loop can constitute a water-water heat exchange experimental device. The water-water heat exchange experimental device is used for testing heat exchange products such as a shell-and-tube heat exchanger. By measuring temperature, flow rate, and pressure difference and other data through sensors such as the hot water inlet temperature sensor T4, the hot water outlet temperature sensor T5, the hot water differential pressure transmitter P4, the cold water outlet temperature sensor T7, the cold water inlet temperature sensor T6, and the cold water differential pressure transmitter P3, the overall heat transfer coefficient of water-to-water heat exchange of the tube heat exchange product and the resistance coefficient inside and outside the tube can be calculated.

[0084] Please refer to Figure 3 , the first cold air passage and the water heating circulation loop can constitute a water-air heat exchange experimental device. The water-air heat exchange experimental device is used for testing tube bank heat exchange products composed of a double-pipe tube and a vortex tube. By measuring temperature, flow rate, and pressure difference and other data through sensors such as the inlet air flow meter F1, the hot water inlet temperature sensor T4, the hot water outlet temperature sensor T5, the second differential pressure transmitter P2, the hot air temperature sensor T1, the outlet air temperature sensor T2, and the first differential pressure transmitter P1, the outside convection heat transfer coefficient of the water-to-air heat exchange of the tube bank heat exchange product and the resistance coefficient inside and outside the tube can be calculated.

[0085] Please refer to Figure 4 and Figure 10 , the hot air circuit and the cooling water circulation loop can constitute a gas-water heat exchange experimental device. The gas-water heat exchange experimental device is used for testing tube heat exchange products represented by an economizer. By measuring temperature, flow rate, and pressure difference and other data through sensors such as the inlet air flow meter F1, the cold water outlet temperature sensor T7, the cold water inlet temperature sensor T6, the second differential pressure transmitter P2, the hot air temperature sensor T1, the outlet air temperature sensor T2, and the first differential pressure transmitter P1, the overall heat transfer coefficient of the air-to-water heat exchange of the tube heat exchange product and the resistance coefficient inside and outside the tube can be calculated.

[0086] Please refer to Figure 5 and Figure 11 , the hot air circuit and the second cold air passage can constitute a gas-gas heat exchange experimental device. The gas-gas heat exchange experimental device is used for testing tube heat exchange products represented by an air preheater. By measuring temperature, flow rate, and pressure difference and other data through sensors such as the inlet air flow meter F1, the hot air temperature sensor T1, the outlet air temperature sensor T2, the first differential pressure transmitter P1, the inlet air flow meter F3 inside the tube, the inlet air temperature sensor T8 inside the tube, the outlet air temperature sensor T9 inside the tube, and the air differential pressure transmitter P5 inside the tube, the overall heat transfer coefficient of the air-to-air heat exchange of the tube heat exchange product and the resistance coefficient inside and outside the tube can be calculated.

[0087] Please refer to Figure 6, the dusting and abrasion experimental device can be composed of the dusting and abrasion cold air passage and the material circulation loop. The air inlet of the air inlet pipeline A001 is communicated with the external environment, and the air outlet of the air outlet pipeline A003 is communicated with the external environment. Through such a design, the air entering the test module W005 is normal temperature air, so that the dusting and abrasion simulation experiment on the heat exchange pipe represented by the dimple pipe and the vortex pipe can be carried out under room temperature conditions.

[0088] Please refer to Figure 7 and Figure 9 , the dusting and abrasion hot air loop and the material circulation loop can constitute a dusting and abrasion hot state experimental device. The air inlet pipeline A001 and the air outlet pipeline A003 are communicated through the hot air recycling pipeline A005, so that the air inlet pipeline A001, the air conveying pipeline A002, the air outlet pipeline A003 and the hot air recycling pipeline A005 constitute a hot air recycling loop, the first fan W001 and the rectifier device W004 are provided with the air heating device W002, and the feeding pipeline A004 is communicated between the air conveying pipeline A002 and the rectifier device W004. Through such a design, the air in the air conveying pipeline A002 is quickly heated by the air heating device W002, and the air entering the test module W005 is high-temperature air, which not only can carry out the dusting and abrasion simulation experiment on the heat exchange pipe represented by the dimple pipe and the vortex pipe under high-temperature conditions, but also realizes the recycling of hot air through the designed hot air recycling loop, which can effectively reduce energy consumption.

[0089] The dusting and abrasion hot state experimental device further comprises a cooling tower WA005, a cold water tank WA004 and a cold water circulating pump WA003, and the heat exchange pipe of the test module W005 is sequentially communicated with the cooling tower WA005, the cold water tank WA004 and the cold water circulating pump WA003 through a cooling pipeline A006 and constitutes a cooling water circulation loop. That is, the heat exchange pipe is hot air outside and cooling water inside, through such a design, the outlet air temperature of the test module W005 can be effectively reduced to avoid burning out the dust collector W006. Especially when the dust collector W006 is preferably a bag dust collector, the hot air needs to be reduced to below 110 DEG C to avoid burning out the core components of the bag dust collector.

[0090] Please refer to Figure 8The dusting and abrasion cold air passage, the water heating circulation loop and the material circulation loop can constitute a dusting and abrasion different wall temperature experimental device. The heat exchange pipe of the test module W005, the hot water tank WA001 and the hot water circulating pump WA002 are sequentially connected through the hot water pipeline A007 and constitute a water heating circulation loop, and the air inlet of the air inlet pipeline A001 is connected with the external environment, and the air outlet of the air outlet pipeline A003 is connected with the external environment. The wall of the heat exchange pipe is heated by the water in the water heating circulation loop, that is, the room temperature air outside the heat exchange pipe and the hot water inside the heat exchange pipe, through such a design, the wall temperature of the heat exchange pipe represented by the dimple pipe and the vortex pipe can be accurately controlled, and the dusting and abrasion simulation experiment of the heat exchange pipe under different wall temperature conditions can be realized.

[0091] For the dusting and abrasion experimental device, the dusting and abrasion hot state experimental device and the dusting and abrasion different wall temperature experimental device:

[0092] When the first fan W001 sends the air to the rectifying device W004, the feeding device W003 mixes the material (fine dust or coarse particles) into the air in the air conveying pipeline A002, and the air mixed with the material is sent to the heat exchange pipe (such as a dimple pipe or a vortex pipe) installed on the test module W005 after being rectified by the rectifying device W004, and the air after acting on the heat exchange pipe is filtered by the dust removal device W006 and then discharged to the air outlet pipeline A003.

[0093] When the feeding device W003 sends fine dust to the air conveying pipeline A002 through the feeding pipeline A004, after the simulation experimental device is operated for a set time, the heat exchange pipe in the test module W005 is visually inspected and weighed, and the dusting condition of the heat exchange pipe can be obtained, so that the anti-dusting ability of the heat exchange pipe can be evaluated.

[0094] When the feeding device W003 sends coarse particles to the air conveying pipeline A002 through the feeding pipeline A004, after the simulation experimental device is operated for a set time, the heat exchange pipe in the test module W005 is visually inspected and weighed, and the abrasion condition of the heat exchange pipe can be obtained, so that the anti-abrasion ability of the heat exchange pipe can be evaluated.

[0095] As can be seen from the above, the comprehensive experimental platform for tubular heat exchange products can be used to test various tube types, including finned tubes or other types of heat exchange pipes and test modules with different structures, most of the equipment and pipes are shared by each cold air passage and hot air loop, which meets the needs of different heat exchange experimental devices. The advanced monitoring, measuring, control and adjustment instruments input and output monitor and adjust the experimental data.

[0096] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0097] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0098] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0099] Finally, it needs to be pointed out that the above description is only for the preferred embodiments of the present application, and those skilled in the art can make various similar modifications under the inspiration of the present application without departing from the purpose and scope of the present application, and such modifications all fall within the protection scope of the present application.

Claims

1. A comprehensive experimental platform for tubular heat exchange products, characterized in that: The first fan W001, the air heating device W002, the feeding device W003, the rectifier device W004, the test module W005, the dust removal device W006, the second fan W007, the material lifting device W008, the water-water heat exchange test module W009, the hot water circulation assembly and the cold water circulation assembly; The first fan W001, the air heating device W002, the rectifier device W004 and the test module W005 are sequentially communicated through pipes to form a first cold air passage connected with the external environment at both ends; the first fan W001, the air heating device W002, the rectifier device W004 and the test module W005 are sequentially and circularly communicated through pipes to form a hot air loop; the second fan W007 and the heat exchange pipe of the test module W005 are sequentially communicated to form a second cold air passage connected with the external environment at both ends; the first fan W001, the rectifier device W004, the test module W005 and the dust removal device W006 are sequentially communicated through pipes to form a dusting and abrasion cold air passage connected with the external environment at both ends; the first fan W001, the air heating device W002, the rectifier device W004, the test module W005 and the dust removal device W006 are sequentially and circularly communicated through pipes to form a dusting and abrasion hot air loop; The heat exchange pipe of the test module W005 and the hot water circulation assembly are circularly communicated through pipes to form a water heating circulation loop; the heat exchange pipe of the test module W005 and the cold water circulation assembly are circularly communicated through pipes to form a cooling water circulation loop; the heat exchange pipe of the water-water heat exchange test module W009 and the hot water circulation assembly are circularly communicated through pipes to form a first water-water heat exchange circulation loop; the water-water heat exchange test module W009 and the cold water circulation assembly are circularly communicated through pipes to form a second water-water heat exchange circulation loop; The material lifting device W008 is used for transferring the material recovered by the dust removal device W006 to the feeding device W003; in the dusting and abrasion cold air passage or the dusting and abrasion hot air loop, the feeding device W003 is communicated with the pipe before the air inlet of the rectifier device W004 through the feeding pipe A004, so that the material can be circularly transferred among the material lifting device W008, the feeding device W003, the rectifier device W004 and the dust removal device W006, thereby forming a material circulation loop; The first water-water heat exchange circulation loop and the second water-water heat exchange circulation loop can form a water-water heat exchange experimental device; the first cold air passage and the water heating circulation loop can form a water-air heat exchange experimental device; the hot air loop and the cooling water circulation loop can form a gas-water heat exchange experimental device; the hot air loop and the second cold air passage can form a gas-gas heat exchange experimental device; the dusting and abrasion cold air passage and the material circulation loop can form a dusting and abrasion experimental device; the dusting and abrasion hot air loop and the material circulation loop can form a dusting and abrasion hot state experimental device; the dusting and abrasion cold air passage, the water heating circulation loop and the material circulation loop can form a dusting and abrasion different wall temperature experimental device; The dusting and abrasion hot state experimental device further comprises a cooling water circulation loop; The hot water circulating assembly comprises a hot water tank WA001 and a hot water circulating pump WA002, and the heat exchange pipe in the test module W005 is in circulation communication with the hot water tank WA001 and the hot water circulating pump WA002 through pipelines to form a water heating circulation loop.

2. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: A hot air temperature sensor T1 is arranged on the pipeline connecting the air heating device W002 and the rectifying device W004, and an outlet air temperature sensor T2 is arranged on the pipeline connecting the test module W005 and the dust removal device W006.

3. The integrated experimental platform for tubular heat exchange products according to claim 1 or 2, characterized in that: The cold water circulating assembly comprises a cooling tower WA005, a cold water tank WA004 and a cold water circulating pump WA003, and the heat exchange pipe in the test module W005 is in circulation communication with the cooling tower WA005, the cold water tank WA004 and the cold water circulating pump WA003 through pipelines to form a cooling water circulation loop.

4. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: The hot water tank WA001 is provided with a water temperature sensor T3.

5. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: A dust concentration sensor D1 is arranged on the pipeline connecting the air inlet of the dust removal device W006, and a dust concentration sensor D2 is arranged on the pipeline connecting the air outlet of the dust removal device W006.

6. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: An inlet air flow meter F1 is arranged on the pipeline connecting the air outlet of the first fan W001, an outlet air flow meter F2 is arranged on the pipeline connecting the air outlet of the dust removal device W006 and the external environment, and an inlet air flow meter F3 is arranged on the pipeline connecting the air outlet of the second fan W007.

7. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: Further comprising a first differential pressure transmitter P1 and a second differential pressure transmitter P2, the two ends of the first differential pressure transmitter P1 are respectively connected with the pipelines of the air inlet and the air outlet of the test module W005, and the two ends of the second differential pressure transmitter P2 are respectively connected with the water outlet and the water inlet of the heat exchange pipe in the test module W005.

8. The integrated experimental platform for tubular heat exchange products according to claim 1, characterized in that: The pipeline in communication with the first fan W001 air inlet is an air inlet pipeline A001; the pipeline between the first fan W001 air outlet and the dust removal device W006 air inlet in the dust accumulation and wear cold air passage and the dust accumulation and wear hot air passage is an air conveying pipeline A002; the pipeline in communication with the dust removal device W006 air outlet is an air exhaust pipeline A003; the air inlet pipeline A001 and the air exhaust pipeline A003 can be in communication with the external environment respectively and can be connected through a hot air recycling pipeline A005; the pipeline in the cold water circulating assembly is a cooling pipeline A006; the pipeline in the hot water circulating assembly is a hot water pipeline A007; the air conveying pipeline A002 between the test module W005 and the dust removal device W006 is connected with the air exhaust pipeline A003 through a direct discharge pipeline A008; the pipeline in the second cold air passage is a cold air pipeline A009; at least one valve is arranged on the air inlet pipeline A001, the air conveying pipeline A002, the air exhaust pipeline A003, the hot air recycling pipeline A005, the direct discharge pipeline A008 and the cold air pipeline A009; the water inlet end of the cooling pipeline A006 and the water inlet end of the hot water pipeline A007 are connected with the heat exchange pipe water outlet of a water replacement pipe arranged in the test module W005 through a three-way valve; and the water outlet end of the cooling pipeline A006 and the water outlet end of the hot water pipeline A007 are connected with the heat exchange pipe water inlet of the water replacement pipe arranged in the test module W005 through a three-way valve.

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