A heat exchanger performance test bench

Abstract

The application discloses a heat exchanger performance test bench and relates to the technical field of detection devices.The performance test bench comprises a workbench, a docking portion installed inside the workbench, wherein the docking portion comprises a docking pipe, and the outside of the docking pipe is provided with a movable ring and a fixed ring; the outside of the fixed ring is hinged with a movable hook, the connection pipe of the heat exchanger can be hooked by the movable hook; when the movable ring and the fixed ring are in close contact with each other, the limiting block covers the outside of the movable hook to limit the movable range of the movable hook.The heat exchanger performance test bench effectively solves the technical problem that the existing heat exchanger performance test bench cannot be quickly docked with the connection pipe of the heat exchanger during use, and further realizes the quick docking of the connection pipe, and the stability of the connection can be maintained after the docking.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a heat exchanger performance testing bench. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. Heat exchangers have a wide range of applications, including radiators used for heating in daily life, condensers in steam turbines, and oil coolers in aerospace rockets. They are also widely used in chemical, petroleum, power, and nuclear energy industries. Their main function is to ensure the specific temperature required by the process medium, and they are also one of the key devices for improving energy efficiency.

[0003] Currently, Chinese patent publication number CN100587447C discloses a heat exchanger performance test bench, comprising an air circulation system, an oil circulation system, a water / glycol circulation system, and a compressed air system, all connected to the test piece. The heat exchanger performance test bench simulates the working conditions of the tested heat exchanger to determine if its heat transfer capacity and resistance meet design requirements. Furthermore, by testing standard test pieces, it obtains performance curve data for different types and specifications of fins, establishing and enriching a fin performance database. This allows for better, higher-level, and more economical design capabilities.

[0004] A Chinese patent with publication number CN217687902U discloses a heat exchanger performance testing bench, belonging to the field of energy application technology. It includes a softened water system, a constant-temperature hot water supply system, a hot fluid circulation system, a heat exchanger, a cold water tank, a cold fluid circulation system, and a data acquisition system. The softened water system, constant-temperature hot water supply system, and hot fluid circulation system are sequentially connected via pipelines. The hot fluid circulation system is connected to the first input end of the heat exchanger, and the constant-temperature hot water supply system is also connected to the first output end of the heat exchanger. The output end of the cold water tank is connected to the cold fluid circulation system via pipeline, and the cold fluid circulation system is connected to the second input end of the heat exchanger. The input end of the cold water tank is connected to the second output end of the heat exchanger. Data acquisition systems are installed between the hot fluid circulation system, the cold fluid circulation system, and the heat exchanger. The softened water system softens the water, thereby preventing scale buildup in the hot fluid and extending the service life of the related equipment.

[0005] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0006] The existing heat exchanger performance test bench cannot be quickly connected to the heat exchanger connecting pipes: When using the existing heat exchanger performance test bench, both hot and cold media need to be introduced into the heat exchanger. After that, the change of hot and cold media after heat exchange is detected to obtain the heat exchanger's heat exchange efficiency and capacity loss. However, this process requires manual connection of the pipes to the heat exchanger, and tools are also needed to tightly connect the pipes to the heat exchanger. Therefore, a lot of time and effort is spent on fixing the device. Secondly, due to the great uncertainty of manual fixing and testing, certain deviations often occur, resulting in a significant decrease in testing efficiency. To address this, we propose a heat exchanger performance test bench. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a heat exchanger performance testing bench, solving the technical problem that existing heat exchanger performance testing benches cannot quickly connect to heat exchanger connecting pipes during use.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A heat exchanger performance testing bench includes a worktable for supporting the heat exchanger. The heat exchanger to be tested can be mounted on the worktable, and then the connecting pipe of the heat exchanger is connected to the docking part on the worktable. During docking, the connecting pipe is first hooked by a movable hook, and then a limiting block is fitted over the movable hook to prevent the movable hook from moving after hooking the connecting pipe, thereby limiting the movable hook and preventing loosening. This ensures the accuracy of the test results.

[0012] The worktable is a rectangular platform with a servo slide that can drive the heat exchanger to move horizontally.

[0013] The docking section, installed inside the workbench, is used to dock with the connecting pipe of the heat exchanger, thereby connecting the heat exchanger to the test bench. In this way, during the subsequent testing process, a medium at a specific temperature can be introduced into the heat exchanger, and the temperature change of the medium after flowing through the heat exchanger can be detected, thereby calculating the heat exchange rate and heat exchange status of the heat exchanger.

[0014] The docking part includes a connecting tube, and the outside of the connecting tube is fitted with a front and rear corresponding movable ring and a fixed ring. The fixed ring is fixedly connected to the connecting tube, and the movable ring can slide on the outer wall of the connecting tube. Therefore, the movable ring can slide back and forth along the connecting tube.

[0015] The fixed ring is hinged to the outside with a movable hook, which can hook the connecting pipe of the heat exchanger, thereby connecting the connecting pipe and the connecting tube together.

[0016] When the movable ring and the fixed ring are in contact with each other, the limiting block covers the outside of the movable hook, restricting the range of motion of the movable hook. This locks the connecting pipe, thereby preventing media leakage during testing.

[0017] Preferably, the movable ring and the fixed ring are connected by a spring, and an electromagnet is installed inside the movable ring, while an iron plate is installed inside the fixed ring. When the electromagnet inside the movable ring is energized (generates magnetism), it attracts the movable ring, causing the movable ring and the fixed ring to fit together, thereby locking the movable hook and preventing it from moving during detection. Similarly, when the electromagnet is de-energized, the magnetism disappears, and the movable ring moves away from the fixed ring under the action of the spring, thus restoring the movable hook to its free state. At this time, the movable hook flips outward under the action of the torsion spring, thus separating from the connecting tube and forming the shape shown in the figure.

[0018] Preferably, the outer wall of the fixed ring is provided with a connecting seat, and the movable hook is connected to the connecting seat through a rotating shaft. The rotating shaft and the connecting seat are connected by a torsion spring. In this way, the movable hook will flip in the direction of the movable ring under the action of the torsion spring, thereby separating from the connecting pipe, which facilitates the subsequent handling of the heat exchanger.

[0019] Preferably, the end of the limiting block is equipped with a pulley, and the limiting block is in contact with the outer wall of the movable hook through the pulley. The limiting block is L-shaped, so that when the movable ring and the fixed ring are in contact, it covers the outer shape of the movable hook, thereby limiting the range of motion of the device.

[0020] Preferably, the connecting pipe has an inner tube installed inside, and the connecting pipe is inserted into the interior of the connecting pipe through the inner tube. The inner tube includes a connecting plate connected to the inner wall of the connecting pipe, and a central tube is inserted into the front end of the connecting plate. When the fixing ring is in contact with the connecting pipe, the central tube is inserted into the interior of the connecting pipe, so that a medium can be introduced into the connecting pipe through the central tube.

[0021] Preferably, the outer wall of the connecting plate is provided with a first airbag ring, and when the central tube and the connecting tube are connected, the gap between the first airbag ring and the connecting tube can be sealed by the first airbag ring, thereby completing the sealing of the connecting tube opening.

[0022] Preferably, the central tube is fitted with a sleeve, and the sleeve is provided with a second airbag ring, which can seal the gap between the inner wall of the central tube and the inner wall of the connecting tube when the central tube and the connecting tube are connected, thereby completing the sealing between the inner wall of the central tube and the inner wall of the connecting tube.

[0023] Preferably, the top of the workbench is provided with a support portion to support the docking portion;

[0024] The supporting part includes two parallel slide rails, and a vertical plate is connected between the two slide rails, so that it can slide left and right along the slide rails, thereby driving the connecting pipe to move left and right.

[0025] The upright plate can slide along the extension direction of the slide rail, and the docking part is slidably installed at the front end of the upright plate, thereby allowing the docking part to move up and down, cooperating with the above to complete the position adjustment of the connecting pipe.

[0026] Preferably, both ends of the upright plate are equipped with sliders, which are slidably connected to the slide rails to facilitate the translation of the upright plate. The front end of the upright plate is provided with a slide groove, and the extension direction of the slide groove is consistent with the length direction of the upright plate. The docking part can slide along the slide groove, thereby driving the docking part to move up and down.

[0027] (III) Beneficial Effects

[0028] 1. By using a fixed ring with a movable hook to grip the connecting pipe on the heat exchanger, and then having the sliding movable ring drive the limiting block to be sleeved on the outside of the movable hook, the technical problem of the existing heat exchanger performance test bench being unable to quickly connect with the heat exchanger connecting pipe during use is effectively solved, thus achieving rapid connection and maintaining connection stability after connection to prevent media leakage during testing.

[0029] 2. Because an inner tube with an air bladder is inserted into the connecting pipe of the heat exchanger, and the air bladder is inflated to fill the gap between the connecting pipe and the inner tube, the gap between the inner tube and the connecting pipe is blocked to prevent media leakage, thereby ensuring the stability and accuracy of the test.

[0030] 3. Because the bearing part supports the docking part and can move the docking part horizontally, the position of the connecting pipe can be adjusted, which facilitates the matching with different types of heat exchangers and improves the applicability of the device. Attached Figure Description

[0031] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Figure 1 This is an overall structural diagram of an embodiment of the present invention;

[0033] Figure 2This is a connection structure diagram of the bearing part and the docking part in an embodiment of the present invention;

[0034] Figure 3 This is one of the structural diagrams of the docking part in an embodiment of the present invention;

[0035] Figure 4 This is the second structural diagram of the docking part in an embodiment of the present invention;

[0036] Figure 5 This is an exploded structural diagram of the docking part and the inner tube in an embodiment of the present invention;

[0037] Figure 6 This is one of the docking structure diagrams of the docking part and the connecting pipe on the heat exchanger in an embodiment of the present invention;

[0038] Figure 7 This is the second diagram showing the docking structure between the docking part and the connecting pipe on the heat exchanger in an embodiment of the present invention;

[0039] Figure 8 This is the third diagram showing the docking structure between the docking part and the connecting pipe on the heat exchanger in an embodiment of the present invention;

[0040] Figure 9 This is an exploded structural diagram of the docking section in an embodiment of the present invention.

[0041] Legend: 1. Workbench; 21. Connecting pipe; 3. Bearing part; 31. Slider; 32. Slide rail; 33. Vertical plate; 4. Limiting rod; 5. Connecting part; 51. Connecting pipe; 52. Movable ring; 53. Limiting block; 54. Fixed ring; 55. Movable hook; 56. Inner tube; 561. Connecting plate; 562. Central tube; 563. Sleeve; 564. First airbag ring; 565. Second airbag ring; 57. Pulley; 58. Connecting seat. Detailed Implementation

[0042] This application provides a heat exchanger performance testing bench that effectively solves the technical problem of existing heat exchanger performance testing benches being unable to quickly connect with heat exchanger connecting pipes during use. In existing heat exchanger performance testing benches, a fixed ring with a movable hook grips the connecting pipe on the heat exchanger, and a sliding movable ring drives a limiting block to fit outside the movable hook, thus achieving rapid connection while maintaining connection stability and preventing media leakage during testing. Furthermore, an inner tube with an air bladder is inserted into the heat exchanger connecting pipe, and by inflating the air bladder, it fills the gap between the connecting pipe and the inner tube, blocking media leakage and ensuring the stability and accuracy of the test. Finally, a support unit supports the docking part and can move the docking part horizontally, enabling adjustment of the docking pipe position, facilitating compatibility with different types of heat exchangers and improving the applicability of the device.

[0043] Example 1

[0044] The technical solution in this application embodiment effectively solves the technical problem that existing heat exchanger performance test benches cannot be quickly connected to heat exchanger connecting pipes during use. The overall idea is as follows:

[0045] To address the problems existing in the prior art, the present invention provides a heat exchanger performance testing bench. This bench includes a worktable 1 for supporting the heat exchanger. The heat exchanger to be tested can be installed on the worktable 1. Simultaneously, a telescopic rod on the worktable 1 drives a limiting rod 4 downwards, blocking the other end of the heat exchanger and preventing it from moving. Then, the docking part 5 on the worktable 1 connects with the connecting pipe 21 of the heat exchanger. During docking, the connecting pipe 21 is first hooked by a movable hook 55, and then a limiting block 53 is fitted over the movable hook 55, preventing the movable hook 55 from moving after hooking the connecting pipe 21, thus limiting the movable hook 55. This prevents loosening and ensures the accuracy of the test results.

[0046] Workbench 1, such as Figure 1 As shown, it is a rectangular platform with a servo slide that can drive the heat exchanger to move horizontally.

[0047] The docking part 5 is installed inside the workbench 1 and is used to dock with the connecting pipe 21 of the heat exchanger, thereby connecting the heat exchanger and the test bench. In this way, during the subsequent testing process, a medium at a specific temperature can be introduced into the heat exchanger and the temperature change of the medium after flowing through the heat exchanger can be detected, thereby calculating the heat exchange rate and heat exchange status of the heat exchanger.

[0048] The docking part 5 includes a connecting pipe 51, and the outside of the connecting pipe 51 is fitted with a front and rear corresponding movable ring 52 and a fixed ring 54. The fixed ring 54 is fixedly connected to the connecting pipe 51, and the movable ring 52 can slide on the outer wall of the connecting pipe 51. Therefore, the movable ring 52 can slide back and forth along the connecting pipe 51.

[0049] The fixed ring 54 is hinged to a movable hook 55, which can hook the connecting pipe 21 of the heat exchanger, thereby connecting the connecting pipe 21 and the coupling pipe 51 together, forming a... Figures 6-7 As shown;

[0050] When the movable ring 52 and the fixed ring 54 are in contact with each other, the limiting block 53 covers the outside of the movable hook 55, restricting the range of motion of the movable hook 55, such as... Figure 8 As shown, this locks the connecting pipe 21, thus preventing media leakage during testing.

[0051] In some examples, the movable ring 52 and the fixed ring 54 are connected by a spring, and an electromagnet is installed inside the movable ring 52, while an iron plate is installed inside the fixed ring 54. When the electromagnet inside the movable ring 52 is energized (generates magnetism), it attracts the movable ring 52, causing the movable ring 52 and the fixed ring 54 to come into contact, thereby locking the movable hook 55 and preventing it from moving during detection. Similarly, when the electromagnet is de-energized, the magnetism disappears, and the movable ring 52 moves away from the fixed ring 54 under the action of the spring, causing the movable hook 55 to return to its free state. At this time, the movable hook 55 flips outward under the action of the torsion spring, thus separating from the connecting tube 21, forming a... Figure 7 The shape shown.

[0052] In some examples, the outer wall of the fixed ring 54 is provided with a connecting seat 58, and the movable hook 55 is connected to the connecting seat 58 through a rotating shaft. The rotating shaft and the connecting seat 58 are connected by a torsion spring. In this way, the movable hook 55 will flip in the direction of the movable ring 52 under the action of the torsion spring, thereby separating from the connecting pipe 21, which facilitates the subsequent handling of the heat exchanger.

[0053] In some examples, a pulley 57 is mounted on the end of the limiting block 53, and the limiting block 53 is in contact with the outer wall of the movable hook 55 via the pulley 57. The limiting block 53 is L-shaped, so that it covers the outside of the movable hook 55 when the movable ring 52 is in contact with the fixed ring 54. Figure 8 The shape shown limits the range of motion of the device.

[0054] In the specific implementation process, the heat exchanger to be tested is placed on the workbench 1, and then the heat exchanger is pushed to move into the workbench 1. Since the position of the docking part 5 is adjusted in advance to be consistent with the position of the external connecting pipe 21 of the heat exchanger, when the heat exchanger is pushed, the connecting pipe 21 on the heat exchanger can be aligned with the docking part 5 on the workbench 1 one by one. When the connecting pipe 21 is in contact with the fixing ring 54, as... Figure 7 As shown, the electromagnet inside the movable ring 52 is then energized to generate magnetism. Since the iron plate inside the fixed ring 54 corresponds to the electromagnet, the movable ring 52 can move towards the fixed ring 54 when the electromagnet is energized. During the movement of the movable ring 52, the pulley 57 on the limiting block 53 engages with the movable hook 55 and presses against it, causing the movable hook 55 to bend downwards and hook onto the outside of the connecting pipe 21, forming a... Figure 8 The shape shown completes the fixing of the connecting pipe 21.

[0055] Similarly, when it is necessary to separate the connecting pipe 21, the electromagnet is de-energized, and its magnetism disappears. At this time, the movable ring 52 moves away from the fixed ring 54 under the action of the spring, thereby restoring the movable hook 55 to its free state. Then, under the action of the torsion spring, the movable hook 55 flips outward, thus separating from the connecting pipe 21, forming a... Figure 7 The shape shown.

[0056] Example 2

[0057] Based on Example 1, the present application aims to improve the sealing performance between the connecting pipe and the butt pipe. The overall concept is as follows:

[0058] The inner tube 56 is installed inside the connecting pipe 51, and the connecting pipe 51 is inserted into the inside of the connecting pipe 21 through the inner tube 56. The inner tube 56 includes a connecting plate 561 connected to the inner wall of the connecting pipe 51, and a central tube 562 is inserted into the front end of the connecting plate 561. When the fixing ring 54 is in contact with the connecting pipe 21, the central tube 562 is inserted into the inside of the connecting pipe 21, so that the medium can be introduced into the connecting pipe 51 through the central tube 562.

[0059] In some examples, the outer wall of the connecting plate 561 is provided with a first airbag ring 564, and when the central tube 562 is connected to the connecting tube 21, the gap between the first airbag ring 564 and the connecting tube 21 can be sealed by the first airbag ring 564, thereby completing the sealing of the pipe opening of the connecting tube 51.

[0060] In some examples, the central tube 562 is fitted with a sleeve 563, and the sleeve 563 is provided with a second airbag ring 565, which can seal the gap between the central tube 562 and the inner wall of the connecting tube 21 when the central tube 562 is connected to the connecting tube 21, thereby completing the seal between the central tube 562 and the inner wall of the connecting tube 21.

[0061] Example 3

[0062] Based on Example 1, the present application's embodiments aim to increase the movement range of the control unit, and the overall concept is as follows:

[0063] The top of the workbench 1 is provided with a support part 3, which can support the docking part 5;

[0064] The supporting part 3 includes two parallel slide rails 32, and a vertical plate 33 connects the two slide rails 32, allowing it to slide left and right along the slide rails 32. Figure 1 and Figure 2 As shown, this causes the docking part 5 to move left and right.

[0065] The upright plate 33 can slide along the extension direction of the slide rail 32, and the docking part 5 is slidably installed at the front end of the upright plate 33, thereby allowing the docking part 5 to move up and down, and cooperate with the above to complete the position adjustment of the docking part 5.

[0066] In some examples, sliders 31 are installed at both ends of the upright plate 33 and are slidably connected to the slide rail 32 through the sliders 31, so as to facilitate the translation of the upright plate 33. A sliding groove is provided at the front end of the upright plate 33, and the extension direction of the sliding groove is consistent with the length direction of the upright plate 33. The docking part 5 can slide along the sliding groove, thereby driving the docking part 5 to move up and down.

[0067] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A heat exchanger performance testing bench, characterized in that, The performance test bench includes: Workbench (1); The docking part (5) is installed inside the workbench (1) and is used to dock with the connecting pipe (21) of the heat exchanger; The docking part (5) includes a connecting pipe (51), and the connecting pipe (51) is fitted with a front and rear corresponding movable ring (52) and a fixed ring (54). A limit block (53) is connected to the outer wall of the movable ring (52). The movable ring (52) and the fixed ring (54) are connected by a spring. An electromagnet is installed inside the movable ring (52), and an iron sheet is installed inside the fixed ring (54). When the electromagnet inside the movable ring (52) is energized, the movable ring (52) and the fixed ring (54) fit together. The outer wall of the fixed ring (54) is provided with a connecting seat (58), and the movable hook (55) is connected to the connecting seat (58) through a rotating shaft. The rotating shaft and the connecting seat (58) are connected by a torsion spring. Under the action of the torsion spring, the movable hook (55) flips in the direction of the movable ring (52). The fixed ring (54) is hinged to the outside with a movable hook (55), which hooks the connecting pipe (21) of the heat exchanger. When the movable ring (52) and the fixed ring (54) are in contact with each other, the limiting block (53) covers the outside of the movable hook (55) and restricts the range of motion of the movable hook (55); The top of the workbench (1) is provided with a support part (3) to support the docking part (5); The supporting part (3) includes two parallel slide rails (32), and a vertical plate (33) is connected between the two slide rails (32). The upright plate (33) slides along the extension direction of the slide rail (32), and the docking part (5) is slidably installed at the front end of the upright plate (33).

2. The heat exchanger performance test bench as described in claim 1, characterized in that: The end of the limiting block (53) is equipped with a pulley (57), and the limiting block (53) is attached to the outer wall of the movable hook (55) through the pulley (57); The limiting block (53) is L-shaped and covers the outside of the movable hook (55) when the movable ring (52) and the fixed ring (54) are in contact.

3. The heat exchanger performance test bench as described in claim 1, characterized in that: The inner tube (56) is installed inside the connecting pipe (51), and the connecting pipe (51) is inserted into the inside of the connecting pipe (21) through the inner tube (56); The inner tube (56) includes a connecting plate (561) connected to the inner wall of the connecting tube (51), and a central tube (562) is inserted into the front end of the connecting plate (561). When the fixing ring (54) is in contact with the connecting tube (21), the central tube (562) is inserted into the inside of the connecting tube (21).

4. The heat exchanger performance test bench as described in claim 3, characterized in that: The outer wall of the connecting plate (561) is provided with a first airbag ring (564), and when the central tube (562) and the connecting tube (21) are connected, the gap between the first airbag ring (564) and the connecting tube (21) is sealed by the first airbag ring (564).

5. The heat exchanger performance test bench as described in claim 3, characterized in that: The central tube (562) is fitted with a sleeve (563), and the sleeve (563) is fitted with a second airbag ring (565) on the outside. When the central tube (562) and the connecting tube (21) are connected, the gap between the inner wall of the central tube (562) and the connecting tube (21) is sealed.

6. The heat exchanger performance test bench as described in claim 1, characterized in that: Both ends of the upright plate (33) are equipped with sliders (31), and are slidably connected to the slide rail (32) through the sliders (31).

7. The heat exchanger performance test bench as described in claim 1, characterized in that: The front end of the vertical plate (33) is provided with a sliding groove, and the extension direction of the sliding groove is consistent with the length direction of the vertical plate (33); The docking part (5) slides along the groove.

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