A kind of surface cooler pressure test device

Abstract

This utility model relates to the field of pressure resistance testing technology for surface coolers, and in particular to a pressure resistance testing device for surface coolers. The device includes a testing platform with a base plate at its lower end. A clamping cylinder is mounted on the testing platform, with a horizontal cylinder rod on the clamping cylinder and a clamping plate on the horizontal cylinder rod. A water tank and a pressure testing pump are mounted on the testing platform, with a suction pipe and an injection pipe connected to the pressure testing pump. A groove is formed on the testing platform, and the surface cooler body is placed within the groove. The surface cooler body consists of a shell, copper tubes, an inlet pipe, and an outlet pipe. A fixed slot is formed on the base plate, and a support is mounted on the base plate. A longitudinal cylinder and a longitudinal guide groove are mounted on the support. A protective cover is mounted on the cylinder rod of the longitudinal cylinder. An injection pipe and a return pipe are connected to the water tank. This device improves the protection during the pressure resistance testing process of wound-finned tube water-cooled surface coolers, ensuring the clamping stability during the testing of wound-finned tube water-cooled surface coolers.

Description

Technical Field

[0001] This utility model relates to the field of pressure resistance testing technology for surface coolers, and in particular to a pressure resistance testing device for surface coolers. Background Technology

[0002] Surface coolers are heat transfer devices commonly used in HVAC systems, process cooling, air dehumidification, refrigeration equipment, cooling towers, and other fields.

[0003] There are many types of surface coolers, among which the most commonly used is the finned tube water-cooled surface cooler. The working principle of the finned tube water-cooled surface cooler is "indirect heat exchange", that is, the refrigerant absorbs heat inside the tube, and the air is cooled and dehumidified outside the tube, which is the existing technology.

[0004] After the finned tube water-cooled surface cooler is manufactured into a finished product, it needs to undergo a pressure resistance test. The specific steps are as follows: First, connect the inlet and outlet of the surface cooler to a pressure testing pump. Water is injected into the copper tube through the pressure testing pump. The injected water pressure will form a water pressure in the copper tube. A pressure gauge is preset on the water injection pipe of the pressure testing pump to monitor the water pressure value in real time. When the water pressure value reaches the required water pressure resistance value, water injection is stopped, and the water pressure is maintained for a period of time. At this time, the inspector can check all connection points, welds, and joints between the fins and tubes on the current finned tube water-cooled surface cooler for water droplet leakage. If there is leakage, it means that the current surface cooler is unqualified. If there is no leakage, it is qualified.

[0005] Currently, existing pressure testing devices for wound finned tube water-cooled surface coolers pose a risk of sudden energy release during water pressure testing. For example, the joints may break or the copper pipes may burst. The broken joints or burst water flow may directly hit the inspector's face and body, causing injury.

[0006] To address this, we designed a pressure testing device for wound finned tube water-cooled surface coolers to meet the needs of practical applications. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a pressure testing device for surface coolers.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] Design a pressure resistance testing device for a surface cooler, including a testing platform with a base plate at its lower end, a clamping cylinder on the testing platform, a horizontal cylinder rod on the clamping cylinder, a clamping plate on the horizontal cylinder rod, a water tank and a pressure testing pump on the testing platform, a water pump connected to a water suction pipe and a water injection pipe, a groove on the testing platform, a surface cooler body inside the groove, the surface cooler body consisting of an outer shell, copper pipes, a water inlet pipe, and a water outlet pipe, a fixed slot on the base plate, a support on the base plate, a longitudinal cylinder and a longitudinal guide groove on the support, a protective cover on the cylinder rod of the longitudinal cylinder, and a guide slider on the protective cover;

[0010] The water tank is connected to a water inlet pipe and a water return pipe. The water inlet pipe is equipped with a pressure gauge and a first connector, and a first valve. The water return pipe is equipped with a second connector and a second valve.

[0011] The water tank is equipped with a water supply pipe, and a rib is provided between the horizontal cylinder rod and the clamping plate.

[0012] In detail, the copper pipe is located inside the outer casing, and the inlet pipe and outlet pipe are respectively located at the top of the outer casing and connected to the copper pipe. The copper pipe is inserted into the groove.

[0013] In detail, the protective cover is a rectangular frame structure with an open bottom, and the fixed slot is a rectangular frame with an internal groove structure.

[0014] In detail, the bracket has a U-shaped structure, and the guide slider and the longitudinal guide groove are slidably engaged with each other and form a set, which consists of two sets that are symmetrical from left to right.

[0015] In detail, the water pumping pipe is connected to the inner cavity of the water tank, and both the water injection pipe and the water return pipe are metal corrugated pipe structures.

[0016] In detail, the first connector is located at the lower end of the water inlet pipe, and the second connector is located at the lower end of the water return pipe.

[0017] In detail, the clamping cylinder and the clamping plate are a set, and there are two sets in total that are symmetrical from left to right. The rib plate is a triangular structure and is located between the clamping plate and the horizontal cylinder rod.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] 1. This utility model, by setting a bracket with a longitudinal cylinder and installing a protective cover on the cylinder rod of the longitudinal cylinder, and simultaneously setting a longitudinal guide groove and a guide slider, and opening a fixed slot structure, allows the protective cover to be vertically guided and inserted into the fixed slot before the water pressure withstand test. At this time, the protective cover has completely covered the surface cooler body and the test table, avoiding the danger of joints breaking or copper pipes bursting during the water pressure withstand test. This effectively prevents the broken joints or burst water from directly hitting the inspector's face and body, thus effectively improving the protective performance of the pressure withstand test device for wound finned tube water-cooled surface coolers during the test process.

[0020] 2. This utility model effectively improves the structural stability between the horizontal cylinder rod and the clamping plate by setting a triangular rib structure on the horizontal cylinder rod of the clamping cylinder, ensuring the clamping stability of the outer shell of the surface cooler body, and thus ensuring the clamping stability during the inspection process of the wound finned tube water-cooled surface cooler. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the surface cooler body of this utility model in an unclamped and connected state.

[0022] Figure 2 This is a three-dimensional schematic diagram of the surface cooler body of this utility model in a clamped and connected state.

[0023] Figure 3 For the present utility model Figure 1 A three-dimensional schematic diagram of the main body of the intermediate surface cooler;

[0024] Figure 4 For the present utility model Figure 2 A three-dimensional schematic diagram showing the middle protective cover inserted into the designated slot;

[0025] Figure 5 For the present utility model Figure 2 A three-dimensional schematic diagram of the connection status between the main body of the intermediate surface cooler and the first and second connectors.

[0026] In the diagram: 1 Inspection table; 10 Groove; 11 Clamping cylinder; 12 Horizontal cylinder rod; 13 Clamping plate; 14 Rib plate; 2 Base plate; 20 Fixed slot; 3 Water tank; 30 Water supply pipe; 4 Test pressure pump; 41 Water suction pipe; 5 Water injection pipe; 50 Pressure gauge; 51 First connector; 52 First valve; 6 Return water pipe; 61 Second connector; 62 Second valve; 7 Surface cooler body; 71 Outer shell; 72 Copper pipe; 73 Inlet water pipe; 74 Outlet water pipe; 8 Bracket; 80 Longitudinal guide groove; 81 Longitudinal cylinder; 82 Protective cover; 83 Guide slider. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-5 A pressure testing device for a surface cooler includes a test bench 1, a base plate 2 at the lower end of the test bench 1, a clamping cylinder 11 on the test bench 1, a horizontal cylinder rod 12 on the clamping cylinder 11, a clamping plate 13 on the horizontal cylinder rod 12, a water tank 3 and a test pump 4 on the test bench 1, a water pump 41 and a water injection pipe 5 connected to the test pump 4, a groove 10 on the test bench 1, a surface cooler body 7 inside the groove 10, the surface cooler body 7 consisting of an outer shell 71, a copper pipe 72, a water inlet pipe 73, and a water outlet pipe 74, a fixed slot 20 on the base plate 2, a support 8 on the base plate 2, a longitudinal cylinder 81 and a longitudinal guide groove 80 on the support 8, a protective cover 82 on the cylinder rod of the longitudinal cylinder 81, and a guide slider 83 on the protective cover 82.

[0029] Water tank 3 is connected to water inlet pipe 5 and water return pipe 6. Water inlet pipe 5 is equipped with pressure gauge 50 and first connector 51, water inlet pipe 5 is equipped with first valve 52, and water return pipe 6 is equipped with second connector 61 and second valve 62.

[0030] Water tank 3 is provided with water supply pipe 30, and rib plate 14 is provided between horizontal cylinder rod 12 and clamping plate 13. The surface cooler body 7 described in this patent is a finned tube water-cooled surface cooler, which is prior art. The functions of the related undrawn structures are also prior art and need not be described in detail.

[0031] The pressure testing pump 4, the first valve 52, and the second valve 62 described in this patent are all wirelessly controlled opening and closing structures. Wireless receivers are pre-installed on the pressure testing pump 4, the first valve 52, and the second valve 62. By transmitting corresponding commands through the corresponding wireless remote control, the opening and closing effect of the pressure testing pump 4, the first valve 52, and the second valve 62 can be achieved wirelessly. This is prior art. The functions of the related structures not shown are also prior art and need not be described in detail.

[0032] It should be further explained that the copper pipe 72 is located in the outer casing 71, and the water inlet pipe 73 and the water outlet pipe 74 are respectively located at the top of the outer casing 71 and connected to the copper pipe 72. The copper pipe 72 is inserted into the groove 10. During inspection, if water seeps out, the seeping water will overflow from the groove 10, and the inspector can then observe it.

[0033] It should be further noted that the shield 82 has a rectangular frame structure with an open bottom. The shield 82 itself is made of PC polycarbonate, which is transparent, impact-resistant, scratch-resistant, very tough, and not easy to break. It can be firmly bonded to the guide slider 83 with epoxy resin.

[0034] The fixed slot 20 has a rectangular frame with an internal groove structure, which enables the insertion and positioning of the lowered protective cover 82.

[0035] It should be further explained that the bracket 8 has a U-shaped structure. The guide slider 83 and the longitudinal guide groove 80 slide and engage with each other as a set. There are two sets in total, which are symmetrical from left to right. When the cover 82 moves up and down, it drives the guide slider 83 on both sides to slide vertically along the longitudinal guide groove 80, which improves the stability of the guide movement of the cover 82.

[0036] It should be further noted that the water pump 41 is connected to the inner cavity of the water tank 3, which is pre-filled with clean water. The water supply pipe 30 is equipped with a manual valve. By opening the manual valve, the water tank 3 can be conveniently replenished with water.

[0037] Both the water inlet pipe 5 and the water return pipe 6 are metal corrugated pipe structures. When the first connector 51 and the second connector 61 move up and down, the vertical pipe body of the water inlet pipe 5 and the water return pipe 6 will extend and retract vertically. When the first connector 51 and the second connector 61 move left and right respectively, the horizontal pipe body of the water inlet pipe 5 and the water return pipe 6 will extend and retract horizontally without affecting the water inlet and return effect.

[0038] It should be further noted that the first connector 51 is located at the lower end of the water injection pipe 5, and the second connector 61 is located at the lower end of the water return pipe 6. Both the first connector 51 and the second connector 61 are quick-connect pipe joint structures, which are existing technologies. They can be quickly and easily connected to the water inlet pipe 73 and the water outlet pipe 74, or removed and separated.

[0039] It should be further noted that the clamping cylinder 11 and the clamping plate 13 are a set, and there are two sets in total that are symmetrical from left to right. The rib plate 14 is a triangular structure and is located between the clamping plate 13 and the horizontal cylinder rod 12. The rib plate 14 is made of hard alloy steel, which has high strength and does not deform.

[0040] Operating procedure: First, place the entire surface cooler body 7 on the inspection table 1, ensuring that the copper tube 72 is fully inserted into the groove 10. Then, simultaneously activate the clamping cylinders 11 on both sides, causing the clamping plates 13 on both sides to stably clamp the outer shell 71. Stop the clamping cylinders 11, then move the first connector 51 downwards and connect it with the water inlet pipe 73 via a sealing snap. Next, move the second connector 61 downwards and connect it with the water outlet pipe 74 via a sealing snap. Then, open the first valve 52 and close the second valve 62 (the pressure test pump 4, the first valve 52, and the second valve 62 are all wirelessly controlled for opening and closing, which is existing technology). Next, activate the vertical cylinder 81, causing the protective cover 82 to move downwards and insert into the fixed slot 20, thus protecting the entire surface cooler body 7 and the inspection table 1. Then, control the opening of the pressure test pump 4, and inject water from the water tank 3 into the copper tube 72 through the water pumping pipe 41 and the water injection pipe 5.

[0041] The injected water pressure will form a water pressure in the copper pipe 72. The pressure gauge 50 can monitor the water pressure value in real time. When the water pressure value reaches the required water pressure resistance value, the test pump 4 is turned off and no more water is injected. The water pressure is maintained for a period of time. At this time, the inspector can directly check all connection points, welds, and joints between fins and pipes on the current surface cooler body 7 through the transparent protective cover 82 to see if there is any water leakage. If there is leakage, it means that the current surface cooler is unqualified. If there is no leakage, it is qualified. During the water pressure test, the protective cover 82 can prevent the broken joints or burst water flow from directly hitting the inspector's face and body and causing injury. This improves the protection of the pressure resistance test device for the wound finned tube water-cooled surface cooler during the test process.

[0042] In addition, by setting a triangular rib plate 14 structure on the horizontal cylinder rod 12 of the clamping cylinder 11, the structural stability between the horizontal cylinder rod 12 and the clamping plate 13 is improved, ensuring the clamping stability of the outer shell 71 of the surface cooler body 7, and thus ensuring the clamping stability during the inspection process of the finned tube water-cooled surface cooler.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure resistance testing device for a surface cooler, comprising a testing bench (1), characterized in that: The lower end of the inspection table (1) is provided with a base plate (2). A clamping cylinder (11) is provided on the inspection table (1). A horizontal cylinder rod (12) is provided on the clamping cylinder (11). A clamping plate (13) is provided on the horizontal cylinder rod (12). A water tank (3) and a pressure test pump (4) are provided on the inspection table (1). A water pump (41) and a water injection pipe (5) are connected to the pressure test pump (4). A groove (10) is provided on the inspection table (1). The device is equipped with a surface cooler body (7), which consists of a shell (71), copper pipe (72), water inlet pipe (73), and water outlet pipe (74). A fixed slot (20) is provided on the base plate (2), and a bracket (8) is provided on the base plate (2). A longitudinal cylinder (81) and a longitudinal guide groove (80) are provided on the bracket (8). A protective cover (82) is provided on the cylinder rod of the longitudinal cylinder (81), and a guide slider (83) is provided on the protective cover (82). The water tank (3) is connected to a water inlet pipe (5) and a water return pipe (6). The water inlet pipe (5) is equipped with a pressure gauge (50) and a first connector (51). The water inlet pipe (5) is equipped with a first valve (52). The water return pipe (6) is equipped with a second connector (61) and a second valve (62). The water tank (3) is provided with a water supply pipe (30), and a rib plate (14) is provided between the horizontal cylinder rod (12) and the clamping plate (13).

2. The pressure testing device for a surface cooler according to claim 1, characterized in that: The copper pipe (72) is located in the outer shell (71), and the water inlet pipe (73) and water outlet pipe (74) are respectively located at the top of the outer shell (71) and connected to the copper pipe (72). The copper pipe (72) is inserted into the groove (10).

3. The pressure testing device for a surface cooler according to claim 1, characterized in that: The shield (82) is a rectangular frame structure with an open bottom, and the slot (20) is a rectangular frame with an internal slot structure.

4. The pressure resistance testing device for a surface cooler according to claim 1, characterized in that: The bracket (8) is U-shaped in general. The guide slider (83) and the longitudinal guide groove (80) slide and engage with each other and form a set, which are two sets symmetrical from left to right.

5. The pressure resistance testing device for a surface cooler according to claim 1, characterized in that: The water pumping pipe (41) is connected to the inner cavity of the water tank (3), and the water injection pipe (5) and the water return pipe (6) are both metal corrugated pipe structures.

6. The pressure testing device for a surface cooler according to claim 1, characterized in that: The first connector (51) is located at the lower end of the water injection pipe (5), and the second connector (61) is located at the lower end of the water return pipe (6).

7. The pressure resistance testing device for a surface cooler according to claim 1, characterized in that: The clamping cylinder (11) and the clamping plate (13) are a set, and there are two sets in total that are symmetrical from left to right. The rib plate (14) is a triangular structure and is located between the clamping plate (13) and the horizontal cylinder rod (12).

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