A heat exchanger air tightness detection equipment

Abstract

The utility model relates to heat exchanger detection equipment technical field discloses a kind of heat exchanger air tightness detection equipment, solve the operation of existing heat exchanger air tightness detection equipment and heat exchanger inlet and outlet port connection is extremely inconvenient, and the sealing performance of connection is poor, it includes air tightness detection machine, the front of air tightness detection machine is equipped with heat exchanger, the inlet and outlet port of both ends of heat exchanger is fixedly installed with butt joint, and the inside of two butt joints is fixedly installed with sealing washer, the both sides of air tightness detection machine are fixedly installed with connecting pipe, the end of two connecting pipes away from air tightness detection machine is fixedly installed with hose, the end of two hoses mutually close is fixedly installed with spigot, two spigots are inserted in the inside of two butt joints;The operation of this heat exchanger air tightness detection equipment and heat exchanger inlet and outlet port connection is very convenient, and its connection has good sealing, avoid gas leakage, to improve the accuracy and reliability of detection result.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchanger testing equipment, specifically a heat exchanger airtightness testing device. Background Technology

[0002] Heat exchanger leak testing equipment is a specialized instrument used to evaluate the sealing performance of heat exchangers. Its core principle is to monitor changes in gas within a closed system using methods such as pressure decay, differential pressure, or mass flow rate to determine the presence of leaks. The equipment typically integrates a computer control system, high-precision sensors, and automated clamping modules, enabling fully automated processes for gas filling, pressure stabilization, monitoring, and data analysis, and generating test reports. This equipment is widely used in quality inspection units, component manufacturers, research institutions, and the petrochemical industry. It is suitable for leak testing in heat exchanger production and development, accurately detecting the sealing performance of industrial equipment such as pipelines, valves, and pressure vessels, ensuring the safe operation of products in high-temperature, high-pressure, or corrosive media environments. It is a key tool for ensuring the quality and reliability of heat exchangers. Existing heat exchanger air tightness testing equipment has significant shortcomings. It is extremely inconvenient to operate when connected to the inlet and outlet of the heat exchanger, which consumes a lot of time and effort. Moreover, the sealing performance at the connection is poor, which can easily lead to gas leakage and affect the accuracy and reliability of the test results. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a heat exchanger air tightness testing device, which effectively solves the problems of the inconvenience of operation and poor sealing performance at the connection when the existing heat exchanger air tightness testing device is connected to the heat exchanger inlet and outlet.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger airtightness testing device, including an airtightness testing machine, a heat exchanger is provided at the front of the airtightness testing machine, and a butt joint is fixedly installed at the inlet and outlet ports at both ends of the heat exchanger, and a sealing gasket is fixedly installed inside the two butt joints. Connecting pipes are fixedly installed on both sides of the airtightness testing machine, and a flexible hose is fixedly installed at the end of the two connecting pipes away from the airtightness testing machine. Insertion tubes are fixedly installed at the ends of the two flexible hoses that are close to each other, and the two insertion tubes are inserted into the inside of the two butt joints. The airtightness testing machine is internally equipped with a dual-axis motor. The two output ends of the dual-axis motor are equipped with transmission components, which are connected to the two insertion tubes. When the dual-axis motor is running, it drives the two insertion tubes to press against and fix them to the two mating heads through the transmission components.

[0005] Preferably, the transmission assembly includes two bushings fixedly installed at the two output ends of the dual-shaft motor. Bushings are rotatably installed on the surfaces of the two shafts, and both bushings are fixedly connected to the airtightness testing machine via a fixing rod.

[0006] Preferably, each of the two shafts has a toothed column fixedly installed at one end that is far apart from each other. The two toothed columns are rotatably connected to the two connecting pipes through shaft seats at the ends that are far apart from each other, and gears are meshed on one side of the surface of each toothed column.

[0007] Preferably, each gear has a threaded sleeve fixedly installed in the middle, the two threaded sleeves are threadedly connected to the surfaces of the two insertion tubes, and a retaining ring is fixedly installed at one end of the surfaces of the two insertion tubes.

[0008] Preferably, one end of each of the two threaded sleeves is tightly abutted against two locking rods, and the middle part of the four locking rods is rotatably connected to the upper and lower parts of the two abutment rings through a rotating seat, and the lower part of one end of each of the four locking rods is provided with a locking block, and the four locking blocks are respectively fixedly installed on the upper and lower parts of the two mating joints.

[0009] Preferably, the lower part of each insertion tube is fixedly installed with a sliding sleeve by a connecting rod, and a sliding rod is inserted into each of the two sliding sleeves, and the ends of the two sliding rods that are close to each other are fixedly connected to the airtightness testing machine.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the operator places the heat exchanger in front of the airtightness testing machine and aligns the connectors at both ends of the heat exchanger with the two insertion tubes; then, the operator pushes the two insertion tubes to move towards each other through the two connecting rods. When the two connecting rods move towards each other, they cause the two sliding sleeves to slide on the surfaces of the two sliding rods, increasing the stability of the movement of the two insertion tubes. At the same time as the two insertion tubes move towards each other, they will stretch the two flexible tubes and insert them into the interior of the two connectors for docking; immediately afterward, the operator starts the dual-output shaft motor to drive the two shafts to rotate. When the two shafts rotate, they drive the two gears to rotate through the two toothed columns. When the two gears rotate, they drive the two threaded sleeves to rotate and move towards each other along the surfaces of the two insertion tubes. When the two threaded sleeves move towards each other, they push one end of the four locking rods upward, causing the ends of the locking rods away from the threaded sleeves to rotate downward and engage with the four locking blocks. When the locking rods rotate downward and engage, they also drive the retaining ring to press against the mating head, and at the same time drive the insertion tubes to press against the sealing gasket, thereby reducing the gap at the mating point, thus quickly completing the mating and improving the sealing effect. This makes the operation of connecting this airtightness testing equipment to the inlet and outlet of the heat exchanger very convenient, and its connection has good sealing performance, avoiding gas leakage, thereby improving the accuracy and reliability of the test results. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the heat exchanger airtightness testing equipment of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the heat exchanger airtightness testing equipment of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the connector of this utility model; Figure 4 This is a schematic diagram of the dual-output shaft motor structure of this utility model; Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle; In the diagram: 1. Air tightness testing machine; 2. Heat exchanger; 3. Connecting joint; 4. Sealing gasket; 5. Connecting pipe; 6. Hose; 7. Insert pipe; 8. Connecting rod; 9. Sliding sleeve; 10. Sliding rod; 11. Dual-shaft motor; 12. Shaft; 13. Shaft sleeve; 14. Gear column; 15. Shaft seat; 16. Gear; 17. Threaded sleeve; 18. Clamping rod; 19. Clamping block; 20. Abutment ring; 21. Rotating seat; 22. Fixed rod. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0014] Depend on Figures 1 to 5 The present invention includes an airtightness testing machine 1. A heat exchanger 2 is provided at the front of the airtightness testing machine 1. A connector 3 is fixedly installed at the inlet and outlet of the heat exchanger 2. The connector 3 is used to connect with the pipe of the airtightness testing machine 1. A sealing gasket 4 is fixedly installed inside the two connectors 3 to ensure the sealing effect at the joint. Connecting pipes 5 are fixedly installed on both sides of the airtightness testing machine 1. The two connecting pipes 5 are used to transport the test gas. A flexible hose 6 is fixedly installed at the end of the two connecting pipes 5 away from the airtightness testing machine 1. The two flexible hoses 6 are both telescopic. Insert tubes 7 are fixedly installed at the ends of the two flexible hoses 6 that are close to each other. The two insert tubes 7 are inserted into the two connectors 3, thereby realizing the connection between the connecting pipes 5, the flexible hoses 6 and the connectors 3. The airtightness testing machine 1 is internally equipped with a dual-axis motor 11, which can transmit rotational power in both directions. The two output ends of the dual-axis motor 11 are equipped with transmission components, which are connected to the two insertion tubes 7. When the dual-axis motor 11 is running, it drives the two insertion tubes 7 to press against and fix them on the two connectors 3 through the transmission components, thereby quickly achieving connection and improving sealing. The lower part of each insertion tube 7 is fixedly installed with a sliding sleeve 9 through a connecting rod 8. Each sliding sleeve 9 is inserted with a sliding rod 10, which allows the two sliding sleeves 9 to move on the surface of the two sliding rods 10 to limit the movement trajectory of the two insertion tubes 7. The ends of the two sliding rods 10 that are close to each other are fixedly connected to the airtightness testing machine 1 to ensure the stability of the two sliding rods 10.

[0015] In use, the operator places the heat exchanger 2 in front of the airtightness testing machine 1 and aligns the connectors 3 at both ends of the heat exchanger 2 with the two insertion tubes 7. Then, the operator pushes the two insertion tubes 7 towards each other using the two connecting rods 8. When the two connecting rods 8 move towards each other, they cause the two sliding sleeves 9 to slide on the surfaces of the two sliding rods 10, increasing the stability of the movement of the two insertion tubes 7. As the two insertion tubes 7 move towards each other, they stretch the two hoses 6. When the two insertion tubes 7 move towards each other, they insert into the interior of the two connectors 3 for docking. Immediately afterwards, the operator starts the dual-output shaft motor 11 to drive the transmission components to operate. When the transmission component is running, it drives the two insertion tubes 7 to press against the connector 3, and at the same time drives the insertion tubes 7 to press against the sealing gasket 4, so as to reduce the gap at the joint, thereby quickly completing the joint and improving the sealing effect. This makes the operation of connecting this air tightness testing equipment with the inlet and outlet of the heat exchanger 2 very convenient, and its connection has good sealing performance, avoiding gas leakage, thereby improving the accuracy and reliability of the test results.

[0016] The transmission assembly includes two bushings 13 fixedly installed at the two output ends of the dual-shaft motor 11. Bushings 13 are rotatably mounted on the surfaces of the two shafts 12, allowing the two shafts 12 to rotate within the bushings 13 to ensure the stability of their rotation. Both bushings 13 are fixedly connected to the airtightness testing machine 1 via fixing rods 22. Gear spurs 14 are fixedly installed at the ends of the two shafts 12 that are far apart from each other. The ends of the two gear spurs 14 that are far apart from each other are rotatably connected to two connecting pipes 5 via bearing seats 15. The bearing seats 15 ensure the stability of one end of the gear spurs 14 when they rotate. Gears 16 are meshed on one side of the surfaces of the two gear spurs 14, allowing the two gears 16 to rotate when the two gear spurs 14 rotate.

[0017] The operator starts the dual-output shaft motor 11, which drives the two shafts 12 to rotate. When the two shafts 12 rotate, they drive the two gears 16 to rotate through the two gear columns 14.

[0018] A threaded sleeve 17 is fixedly installed in the middle of each gear 16. The two threaded sleeves 17 are threadedly connected to the surfaces of the two insertion tubes 7, allowing the two threaded sleeves 17 to rotate and move on the surfaces of the two insertion tubes 7. A retaining ring 20 is fixedly installed at one end of each of the surfaces of the two insertion tubes 7, and the retaining ring 20 can abut against the connector 3. The inclined surface of one end of each of the two threaded sleeves 17 is respectively in close contact with two locking rods 18. The middle part of the four locking rods 18 is rotatably connected to the upper and lower parts of the two retaining rings 20 through the rotating seat 21, allowing the four locking rods 18 to rotate along the four rotating seats 21. A locking block 19 is provided at the lower part of one end of each of the four locking rods 18. When the four locking rods 18 rotate, they can form a locking limit with the four locking blocks 19. The four locking blocks 19 are fixedly installed at the upper and lower parts of the two connectors 3 respectively.

[0019] When the two gears 16 rotate, they drive the two threaded sleeves 17 to rotate and move towards each other along the surfaces of the two insertion tubes 7. When the two threaded sleeves 17 move towards each other, they push one end of the four locking rods 18 upward to rotate, so that the ends of the locking rods 18 away from the threaded sleeves 17 rotate downward and lock onto the four locking blocks 19. When the locking rods 18 rotate downward and lock onto the locking blocks, they also drive the abutment ring 20 to press against the joint 3, and at the same time drive the insertion tube 7 to be inserted tightly against the sealing gasket 4, so as to reduce the gap at the joint, thereby quickly completing the joint and improving the sealing effect.

Claims

1. A heat exchanger airtightness testing device, comprising an airtightness testing machine (1), characterized in that: The air tightness testing machine (1) is equipped with a heat exchanger (2) at the front. Both ends of the heat exchanger (2) are fixedly equipped with connectors (3), and both connectors (3) are fixedly equipped with sealing gaskets (4). Both sides of the air tightness testing machine (1) are fixedly equipped with connecting pipes (5). Both ends of the two connecting pipes (5) away from the air tightness testing machine (1) are fixedly equipped with hoses (6). Both ends of the two hoses (6) that are close to each other are fixedly equipped with inserts (7). The two inserts (7) are inserted into the inside of the two connectors (3). The air tightness testing machine (1) is internally fixedly equipped with a dual-axis motor (11). The two output ends of the dual-axis motor (11) are equipped with transmission components. The transmission components are connected to the two insertion tubes (7). When the dual-axis motor (11) is running, it drives the two insertion tubes (7) to press against and fix on the two connectors (3) through the transmission components.

2. The heat exchanger airtightness testing device according to claim 1, characterized in that: The transmission assembly includes two bushings (13) fixedly installed at the two output ends of the dual-shaft motor (11). The bushings (13) are rotatably installed on the surfaces of the two shafts (12), and the two bushings (13) are fixedly connected to the air tightness testing machine (1) through the fixing rod (22).

3. The heat exchanger airtightness testing device according to claim 2, characterized in that: The two shafts (12) are fixedly mounted with toothed columns (14) at their far ends. The far ends of the two toothed columns (14) are rotatably connected to the two connecting pipes (5) through shaft seats (15), and gears (16) are meshed on one side of the surface of the two toothed columns (14).

4. The heat exchanger airtightness testing device according to claim 3, characterized in that: The gear (16) is fixedly installed with a threaded sleeve (17) in the middle. The two threaded sleeves (17) are threadedly connected to the surfaces of the two insertion tubes (7), and a retaining ring (20) is fixedly installed at one end of the surfaces of the two insertion tubes (7).

5. The heat exchanger airtightness testing device according to claim 4, characterized in that: Two threaded sleeves (17) have two clamping rods (18) tightly attached to one end of each of the two threaded sleeves (17). The middle part of the four clamping rods (18) is rotatably connected to the upper and lower parts of the two abutment rings (20) through the rotating seat (21). Each of the four clamping rods (18) has a clamping block (19) at the lower part of one end. The four clamping blocks (19) are fixedly installed on the upper and lower parts of the two connectors (3).

6. The heat exchanger airtightness testing device according to claim 1, characterized in that: The lower part of each of the tubes (7) is fixedly installed with a sliding sleeve (9) by a connecting rod (8). Each of the two sliding sleeves (9) is fitted with a sliding rod (10), and the ends of the two sliding rods (10) that are close to each other are fixedly connected to the airtightness testing machine (1).

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