Platform for testing heat exchange performance of heat exchanger

Abstract

The utility model discloses a heat exchange performance testing platform for a heat exchanger, and belongs to the technical field of heat exchanger testing. Comprising a cold water tank, a hot water tank and a plurality of outlet water temperature sensors, the cold water tank is in through connection with a cold water pipe set, the hot water tank is in through connection with a hot water pipe set, the cold water pipe set is in through connection with a cold water pump and a cold water pressure gauge, and the hot water pipe set is in through connection with a hot water pump and a hot water pressure gauge. The cold water pipe set and the hot water pipe set are both connected with valves in a penetrating mode, clamping mechanisms are fixedly installed at the water outlet end of the cold water pipe set and the water outlet end of the hot water pipe set, each clamping mechanism comprises a plurality of clamping blocks which are annularly distributed and can rotate, and in-pipe temperature sensors are fixedly installed in the cold water pipe set and the hot water pipe set. And the stress at the joint is more uniform, and leakage is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchanger testing, and more specifically, to a heat exchange performance testing platform for heat exchangers. Background Art

[0002] Heat exchangers are widely used in petroleum, chemical, power, aviation, machinery and other fields. The quality of their performance will affect the heat exchange efficiency and the economy of the system. The heat exchanger needs to be tested for its heat exchange performance before leaving the factory to avoid unnecessary disputes caused by heat exchangers that do not meet the heat exchange performance standards entering the market. The heat exchanger includes cold water inlet pipe, cold water outlet pipe, hot water inlet pipe and hot water outlet pipe.

[0003] The document with the prior art publication number CN 117451396 A provides a heat exchange performance test platform for a heat exchanger. The device drives the spur gear three to rotate and drives the inner and outer gear rings to rotate through the servo motor four. The inner gear rings of the inner and outer gear rings will simultaneously drive multiple gear columns to engage and rotate, so that the gear columns can drive the positioning bolts to rotate, so that the positioning bolts are screwed into the flange bolt holes of the flange ring and the heat exchanger joint pipe. Therefore, the cold water input end and the output end as well as the hot water input end and the output end can be quickly fixedly connected with the shell and tube heat exchanger head and the shell joint pipe, thereby saving installation time and further improving the test efficiency of the heat exchanger.

[0004] Although the above-mentioned prior art solution can achieve the relevant beneficial effects through the structure of the prior art, it still has the following defects: since each nut and bolt has a different degree of screwing in during the matching process, the degree of tightening of the bolts and nuts at each location is different, which makes the connection prone to penetration.

[0005] In view of this, we propose a heat exchanger heat transfer performance testing platform. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the present application is to provide a heat exchanger heat transfer performance test platform, which solves the technical problems in the above-mentioned background technology, achieves the technical effects of easy disassembly and assembly, more uniform force on the connection, and prevention of leakage.

[0008] 2. Technical solution

[0009] The technical solution of the present application provides a heat exchange performance test platform for a heat exchanger, comprising: a cold water tank and a hot water tank and a plurality of outlet water temperature sensors, the cold water tank is through-connected with a cold water pipe group, the hot water tank is through-connected with a hot water pipe group, the cold water pipe group is through-connected with a cold water pump and a cold water pressure gauge, the hot water pipe group is through-connected with a hot water pump and a hot water pressure gauge, the cold water pipe group and the hot water pipe group are through-connected with valves, the outlet ends of the cold water pipe group and the hot water pipe group are fixedly installed with a clamping mechanism, the clamping mechanism includes a plurality of annularly distributed and rotatable clamping blocks, and the cold water pipe group and the hot water pipe group are fixedly installed with in-pipe temperature sensors.

[0010] By adopting the above technical scheme, the outlet water temperature sensors are respectively inserted and fixed in the cold outlet water pipe and the hot outlet water pipe of the heat exchanger, the cold water pressure gauge is placed between the outlet water end of the cold water pump and the valve, and the hot water pressure gauge is placed between the outlet water end of the hot water pump and the valve to monitor the outlet water pressures of the cold and hot water. Through the rotatable and annularly distributed clamping blocks, the clamping blocks of the two groups of clamping mechanisms are respectively placed on the flanges of the cold inlet water pipe and the hot inlet water pipe of the heat exchanger, and the clamping blocks pull the flanges to the outlet water end of the cold water pipe group or the outlet water end of the hot water pipe group to clamp and fix them, so that the assembly can be completed quickly. The cold water pump and the hot water pump are started to open the valves, and the heat exchange performance of the heat exchanger can be tested by adding the ratios of the hot outlet water temperature divided by the hot inlet water temperature and the cold inlet water temperature divided by the cold outlet water temperature and finally dividing by two.

[0011] As an optional solution to the technical solution of the present application document, the clamping mechanism also includes a hydraulic cylinder and a clamping block. The hydraulic cylinder includes a cylinder body and a piston rod passing through the clamping block. The clamping block is fixed on the piston rod. A groove matching the edge block is provided on the clamping block. A limiting ring is fixedly installed on the side of the piston rod away from the edge block.

[0012] By adopting the above technical scheme, the cylinder bodies of the multiple hydraulic cylinders of the two groups of clamping mechanisms are distributed in a ring and fixed at the water outlet ends of the cold water pipe group and the hot water pipe group, and the clamping blocks are rotatably arranged on the piston rod to avoid interference when the flanges of the cold water inlet pipe and the hot water inlet pipe are connected by rotating the clamping blocks. The clamping blocks are rotated and clamped on the side of the flange away from the hydraulic cylinder. At the same time, the edge blocks can be inserted into the grooves to position the clamping blocks, avoiding the problem of uneven force position of the flange caused by deflection of the clamping blocks. In addition, a pressure sensor can be fixed on the clamping blocks to observe the pressure of the pressure sensor to ensure that the extrusion force of each clamping block on the flange is relatively uniform.

[0013] As an optional solution of the technical solution of the present application document, the water outlet ends of the cold water pipe group and the hot water pipe group are both connected with corrugated hoses, and the water outlet ends of the corrugated hoses are fixedly installed with ring plates.

[0014] By adopting the above technical solution, the clamping angle of the clamping mechanism can be fine-tuned through the provided corrugated hose, so that the clamping mechanism is more flexible, and the cylinder body of the hydraulic cylinder is distributed in an annular shape and fixed on the outer edge of the ring plate.

[0015] As an optional solution of the technical solution of the present application document, the ring plate is provided with a plurality of plug rods distributed in a ring shape.

[0016] By adopting the above technical solution, the insertion rod is inserted into the mounting hole corresponding to the flange to facilitate the positioning of the flange.

[0017] As an optional solution of the technical solution of this application document, an electric heating plate is fixedly installed inside the hot water tank.

[0018] By adopting the above technical solution, the electric heating plate is used to heat the hot water tank.

[0019] As an optional solution of the technical solution of the present application document, temperature sensors are fixedly installed in the cold water tank and the hot water tank.

[0020] By adopting the above technical solution, the water temperature in the cold water tank and the hot water tank can be monitored through the temperature sensor in the tank.

[0021] As an optional solution of the technical solution of this application document, the outlet water temperature sensor is fixedly installed with a C-type clamp.

[0022] By adopting the above technical solution, the outlet water temperature sensor is clamped and fixed on the flanges of the cold outlet water pipe and the hot outlet water pipe by means of a C-type clamp.

[0023] 3. Beneficial effects

[0024] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0025] 1. The present application uses a clamping mechanism in cooperation with a hydraulic cylinder and a clamping block to facilitate rapid disassembly and assembly between the cold water pipe group and the cold water inlet pipe, and between the hot water pipe group and the hot water inlet pipe, so that the fixing force is more uniform. In addition, with the cooperation of the edge block and the groove, the edge block can be positioned to ensure that multiple annularly distributed clamping blocks can be evenly distributed on the flange, avoiding the problem of uneven force and leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a heat exchanger heat transfer performance testing platform disclosed in a preferred embodiment of the present application;

[0027] Figure 2This is a schematic structural diagram of the installation state of a clamping mechanism and a corrugated hose of a heat exchanger heat exchange performance test platform disclosed in a preferred embodiment of the present application;

[0028] Figure 3 A schematic diagram of a water outlet temperature sensor and a C-type clamp structure of a heat exchanger heat exchange performance test platform disclosed in a preferred embodiment of the present application;

[0029] Figure 4 This is a schematic structural diagram of a disassembled state of a clamping mechanism of a heat exchanger heat exchange performance testing platform disclosed in a preferred embodiment of the present application;

[0030] Explanation of the numbers in the figure: 1. Cold water tank; 101. Temperature sensor in the tank; 2. Hot water tank; 201. Electric heating plate; 3. Cold water pipe group; 301. Cold water pressure gauge; 302. Temperature sensor in the pipe; 4. Hot water pipe group; 401. Hot water pressure gauge; 402. Corrugated hose; 4021. Ring plate; 4022. Insert rod; 5. Cold water pump; 6. Hot water pump; 7. Valve; 8. Outlet water temperature sensor; 801. C-type clamp; 9. Cold water inlet pipe; 10. Cold water outlet pipe; 11. Hot water inlet pipe; 12. Hot water outlet pipe; 13. Clamping mechanism; 1301. Hydraulic cylinder; 1302. Clamp block; 1303. Limiting ring; 1304. Edge block; 1305. Groove. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] A heat exchange performance test platform for a heat exchanger comprises: a cold water tank 1, a hot water tank 2 and a plurality of outlet water temperature sensors 8, the cold water tank 1 is connected with a cold water pipe group 3, the hot water tank 2 is connected with a hot water pipe group 4, the cold water pipe group 3 is connected with a cold water pump 5 and a cold water pressure gauge 301, the hot water pipe group 4 is connected with a hot water pump 6 and a hot water pressure gauge 401, the cold water pipe group 3 and the hot water pipe group 4 are both connected with valves 7, the outlet ends of the cold water pipe group 3 and the hot water pipe group 4 are both fixedly installed with a clamping mechanism 13, the clamping mechanism 13 comprises a plurality of annularly distributed and rotatable clamping blocks 1302, and the cold water pipe group 3 and the hot water pipe group 4 are both fixedly installed with an in-pipe temperature sensor 302.

[0033] Reference Figure 1- Figure, the outlet water temperature sensor 8 is respectively inserted and fixed in the cold outlet water pipe 10 and the hot outlet water pipe 12 of the heat exchanger, the cold water pressure gauge 301 is placed between the outlet water end of the cold water pump 5 and the valve 7, and the hot water pressure gauge 401 is placed between the outlet water end of the hot water pump 6 and the valve 7 to monitor the outlet water pressure of the cold and hot water. Through the rotatable and annularly distributed clamping blocks 1302, the clamping blocks 1302 of the two groups of clamping mechanisms 13 are respectively placed on the flanges of the cold inlet water pipe 9 and the hot inlet water pipe 11 of the heat exchanger, and the clamping blocks 1302 pull the flanges to the outlet water end of the cold water pipe group 3 or the outlet water end of the hot water pipe group 4 to clamp and fix them, so that the assembly can be completed quickly. Start the cold water pump 5 and the hot water pump 6 to open the valve 7, and add the ratios of the hot outlet water temperature divided by the hot inlet water temperature and the cold inlet water temperature divided by the cold outlet water temperature, and finally divide them by two to test the heat exchange performance of the heat exchanger.

[0034] The clamping mechanism 13 also includes a hydraulic cylinder 1301 and a block 1304. The hydraulic cylinder 1301 includes a cylinder body and a piston rod passing through the clamp 1302. The block 1304 is fixed on the piston rod. The clamp 1302 is provided with a groove 1305 adapted to the block 1304. A limiting ring 1303 is fixedly installed on the side of the piston rod away from the block 1304.

[0035] Reference Figure 2 and Figure 4 The cylinder bodies of the multiple hydraulic cylinders 1301 of the two groups of clamping mechanisms 13 are distributed in an annular manner and fixed at the water outlet ends of the cold water pipe group 3 and the hot water pipe group 4, and the clamping block 1302 is rotatably set on the piston rod to avoid interference when the flanges of the cold water inlet pipe 9 and the hot water inlet pipe 11 are connected by rotating the clamping block 1302, and the clamping block 1302 is rotated so that the clamping block 1302 is clamped on the side of the flange away from the hydraulic cylinder 1301, and the edge block 1304 can be inserted into the groove 1305 to position the clamping block 1302 to avoid the problem of uneven force position of the flange caused by the deflection of the clamping block 1302, and a pressure sensor can be fixed on the clamping block 1302 to observe the pressure of the pressure sensor to ensure that the extrusion force of each clamping block 1302 on the flange is relatively uniform.

[0036] The water outlet ends of the cold water pipe group 3 and the hot water pipe group 4 are both connected through a corrugated hose 402 , and the water outlet ends of the corrugated hose 402 are both fixedly mounted with a ring plate 4021 .

[0037] Reference Figure 1 and Figure 2 By setting the corrugated hose 402, the clamping angle of the clamping mechanism 13 can be fine-tuned to make the clamping mechanism 13 more flexible, and the cylinder body of the hydraulic cylinder 1301 is distributed in an annular shape and fixed on the outer edge of the ring plate 4021.

[0038] The ring plate 4021 has a plurality of inserting rods 4022 distributed in a ring shape.

[0039] Reference Figure 2 , insert the insertion rod 4022 into the mounting hole corresponding to the flange to facilitate the positioning of the flange.

[0040] An electric heating plate 201 is fixedly installed inside the hot water tank 2 .

[0041] Reference Figure 1 , through the electric heating plate 201 to heat the hot water tank 2.

[0042] The cold water tank 1 and the hot water tank 2 are both fixedly installed with an internal temperature sensor 101 .

[0043] Reference Figure 1 The water temperature in the cold water tank 1 and the hot water tank 2 is monitored by the in-tank temperature sensor 101 .

[0044] The outlet water temperature sensor 8 is fixedly mounted with a C-shaped clip 801 .

[0045] Reference Figure 4 The outlet water temperature sensor 8 is clamped and fixed on the flanges of the cold outlet water pipe 10 and the hot outlet water pipe 12 by a C-type clamp 801.

[0046] Working principle: insert two sets of outlet water temperature sensors 8 into the cold outlet pipe 10 and the hot outlet pipe 12 respectively, and fix them on the flanges of the cold outlet pipe 10 and the hot outlet pipe 12 through the C-type clamp 801, correspond the flanges of the hot inlet pipe 11 and the cold inlet pipe 9 to the two ring plates 4021 respectively, and insert the insertion rod 4022 into the mounting holes corresponding to the flanges, then rotate the clamp block 1302, and clamp the clamp block 1302 on the side of the flange away from the hydraulic cylinder 1301, the clamp block 1302 slides along the piston rod, and the edge block 1304 is inserted into the groove 1305 to position the clamping angle of the clamp block 1302, finally start the hydraulic cylinder 1301 to make the piston rod contract, and the piston rod pulls the clamp block 1302 to clamp and fix it with the ring plate 4021, and finally start the cold water pump 5 and the hot water pump 6.

Claims

1. A heat exchanger heat transfer performance test platform, characterized by: include: A cold water tank (1) and a hot water tank (2) and a plurality of water outlet temperature sensors (8); the cold water tank (1) is connected through a cold water pipe group (3); the hot water tank (2) is connected through a hot water pipe group (4); the cold water pipe group (3) is connected through a cold water pump (5) and a cold water pressure gauge (301); the hot water pipe group (4) is connected through a hot water pump (6) and a hot water pressure gauge (401); the cold water pipe group (3) and the hot water pipe group (4) are both connected through a valve (7); the water outlet ends of the cold water pipe group (3) and the hot water pipe group (4) are both fixedly mounted with a clamping mechanism (13); the clamping mechanism (13) comprises a plurality of annularly distributed and rotatable clamping blocks (1302); and the cold water pipe group (3) and the hot water pipe group (4) are both fixedly mounted with an in-pipe temperature sensor (302).

2. A heat exchanger heat transfer performance testing platform according to claim 1, characterized in that: The clamping mechanism (13) further comprises a hydraulic cylinder (1301) and a prism (1304); the hydraulic cylinder (1301) comprises a cylinder body and a piston rod passing through a clamp (1302); the prism (1304) is fixed on the piston rod; a groove (1305) adapted to the prism (1304) is provided on the clamp (1302); a limiting ring (1303) is fixedly mounted on the side of the piston rod away from the prism (1304).

3. A heat exchanger heat transfer performance testing platform according to claim 1, characterized in that: The water outlet ends of the cold water pipe group (3) and the hot water pipe group (4) are both connected through a corrugated hose (402), and the water outlet ends of the corrugated hose (402) are both fixedly mounted with a ring plate (4021).

4. A heat exchanger heat transfer performance testing platform according to claim 3, characterized in that: The ring plate (4021) is provided with a plurality of insertion rods (4022) distributed in an annular manner.

5. The heat exchange performance testing platform for heat exchangers according to claim 1, characterized in that: An electric heating plate (201) is fixedly installed inside the hot water tank (2).

6. A heat exchanger heat transfer performance testing platform according to claim 1, characterized in that: The cold water tank (1) and the hot water tank (2) are both fixedly provided with an in-tank temperature sensor (101).

7. The heat exchange performance testing platform for heat exchangers according to claim 1, characterized in that: The outlet water temperature sensor (8) is fixedly mounted with a C-shaped clip (801).

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