Leakage point detection device for heat exchange tube of central air conditioner

Abstract

The utility model discloses a central air conditioner heat exchange tube leakage point detection device, which relates to the technical field of central air conditioner detection and comprises a heat exchange tube body, a first sealing plate and a second sealing plate are symmetrically arranged at two ends of the heat exchange tube body, an air inlet tube penetrates through the first sealing plate, a first detection tube penetrates through the first sealing plate, and a second detection tube penetrates through the second sealing plate. A first pressure detection meter is fixedly installed on the outer side wall of the first sealing plate, the first detection pipe is communicated with the first pressure detection meter through a communication hose, the second sealing plate is communicated with a second detection pipe, and a second pressure detection meter is fixedly installed on the outer side wall of the second sealing plate. By arranging the inner fastening assembly, when the device is arranged in the heat exchange tube body, the rotating handle is rotated, so that the driving rotating rod drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the driven rotating rod to rotate; the thread at the tail end of the driven rotating rod enables the threaded sleeve to move outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-conditioning detection, in particular to a central air-conditioning heat exchange tube leakage detection device. Background Art

[0002] Central air conditioning refers to a large air conditioning system, which consists of a main unit and terminals. The main unit is divided into water-cooled units and air-cooled units. The terminal equipment mainly consists of air conditioning units and fan coil units. Another type of central air conditioning is the VRV air conditioning unit that uses the refrigerant Freon. Unlike ordinary household air conditioners, central air conditioning can be used in large-scale buildings. In actual use, the existing leakage detection device has a complex structure and is difficult to detect, which reduces the detection efficiency.

[0003] Publication number: CN213455990U discloses a central air-conditioning heat exchange tube leakage detection device, specifically relating to the field of detection devices, including a heat exchange tube body, one end of which is provided with a detection mechanism, and the other end of which is provided with a fixing mechanism; the detection mechanism includes a first detection plate, the bottom of which is provided with a rotating shaft, one end of which is provided with a sealing plate, and one side of which is provided with a threaded hole. The utility model sets a detection mechanism, and when water fills the heat exchange tube body, a detection is performed. The sealing plates and fixed connecting plates at both ends of the affected tube are tightly connected. If the water pressure drawn into the heat exchange tube is too high, the heat exchange tube is damaged and water is sprayed out from the leakage point, and the heat exchange tube body is disassembled, thereby installing a new heat exchange tube body. The structure is simple and easy to disassemble, which effectively improves the detection effect.

[0004] However, when using the above device, a large amount of water is required to pump water into the heat exchange tube body, and the bidirectional hydraulic pump and the fixed hydraulic pump are easily retained in the water, which can easily reduce the service life of the device. Therefore, it is necessary to provide a central air conditioning heat exchange tube leakage detection device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a central air-conditioning heat exchange tube leakage detection device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A central air-conditioning heat exchange tube leakage detection device includes a heat exchange tube body, a first sealed plate and a second sealed plate are symmetrically provided at both ends of the heat exchange tube body, the inner walls of the first sealed plate and the second sealed plate are both provided with an inner fastening component and an outer fastening component, the first sealed plate is penetrated by an air intake pipe, the first sealed plate is penetrated by a first detection tube, a first pressure detection gauge is fixedly installed on the outer side wall of the first sealed plate, the first detection tube is connected to the first pressure detection gauge through a connecting hose, the outer end of the air intake pipe is connected to the air intake hose, the other end of the air intake pipe is connected to an air guide tube extending into the heat exchange tube body, the second sealed plate is connected to the second detection tube, a second pressure detection gauge is fixedly installed on the outer side wall of the second sealed plate, and the second detection tube is connected to the second pressure detection gauge through a connecting hose.

[0008] Preferably, the inner fastening assembly includes a fixed box fixedly mounted at the center of the inner sidewalls of the first and second sealed plates, an active rotating rod rotatably mounted in the fixed box, the active rotating rod rotatably passing through the first and second sealed plates, and a rotating handle fixedly mounted at the outer end of the active rotating rod;

[0009] The active rotating rod is coaxially fixedly connected to the active bevel gear, and driven rotating rods are symmetrically mounted on both sides of the active rotating rod, and the driven rotating rods are rotated through the outer wall of the fixed box, and the driven rotating rod is coaxially fixedly connected to the driven bevel gear, and the active bevel gear and the driven bevel gear are meshed.

[0010] The driven rotating rod has a threaded end, and a threaded sleeve is provided on the threaded sleeve at the driven rotating rod end. An inner fastening plate is fixedly installed on the end of the threaded sleeve, and a fastening rubber pad is fixedly installed on the outer side wall of the inner fastening plate. The fastening rubber pad is in contact with the inner side wall of the heat exchange tube body.

[0011] It is used to fasten the device inside the heat exchange tube body. When the device is placed in the heat exchange tube body, the handle is rotated to make the active rotating rod drive the active bevel gear to rotate, the active bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the driven rotating rod to rotate. As the driven rotating rod rotates, the thread at the end of the driven rotating rod causes the threaded sleeve to move outward, so that the inner fastening plate and the fastening rubber pad are fitted with the inner wall of the heat exchange tube body.

[0012] Preferably, the external fastening assembly includes a pair of mounting blocks symmetrically fixedly mounted on the inner side walls of the first and second sealed plates, the mounting blocks having a threaded column threaded through them, the outer fastening plate being fixedly mounted on the end of the threaded column, and a rotating handle being fixedly mounted on the top of the threaded column, and the inner side wall of the outer fastening plate being in contact with the outer side wall of the heat exchange tube body;

[0013] It is used to fasten the device on the outside of the heat exchange tube body. After the device is placed on the heat exchange tube body, turn the rotary handle to make the threaded column rotate synchronously, thereby pushing the outer fastening plate. The inner wall of the outer fastening plate fits with the outer wall of the heat exchange tube body, so that the inner fastening component and the outer fastening component cooperate to fasten the device and install it.

[0014] Preferably, the inner side walls of the first and second sealed plates are fixedly mounted with sealed rubber rings, both ends of the heat exchange tube body are in contact with the sealed rubber rings, and the outer side walls of the first and second sealed plates are fixedly mounted with fixed handles;

[0015] It is used to ensure that both ends of the heat exchange tube body 1 are sealed.

[0016] The utility model has the following beneficial effects:

[0017] 1. By setting up the internal fastening assembly, when the device is placed in the heat exchange tube body, the rotating handle is rotated so that the active rotating rod drives the active bevel gear to rotate, the active bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the driven rotating rod to rotate. As the driven rotating rod rotates, the thread at the end of the driven rotating rod causes the threaded sleeve to move outward, so that the internal fastening plate and the fastening rubber pad are fitted with the inner wall of the heat exchange tube body.

[0018] 2. By setting up an external fastening component, after the device is placed on the heat exchange tube body, turn the rotary handle to make the threaded column rotate synchronously, thereby pushing the external fastening plate, and the inner wall of the external fastening plate fits with the outer wall of the heat exchange tube body, so that the internal fastening component and the external fastening component cooperate to fasten the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of a central air-conditioning heat exchange tube leakage detection device proposed by the utility model;

[0020] Figure 2 This is a schematic structural diagram of the first sealing plate and the second sealing plate of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the inner fastening assembly of the present invention;

[0022] Figure 4 This is a schematic structural diagram of the second sealing plate of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the external fastening assembly of the present utility model.

[0024] In the figure: 1. Heat exchange tube body; 2. First sealing plate; 3. Second sealing plate; 4. Sealed rubber ring; 5. Inner fastening assembly; 51. Fixing box; 52. Active rotating rod; 53. Rotating handle; 54. Active bevel gear; 55. Driven rotating rod; 56. Driven bevel gear; 57. Inner fastening plate; 58. Threaded sleeve; 59. Fastening rubber pad; 6. Outer fastening assembly; 61. Mounting block; 62. Threaded column; 63. Outer fastening plate; 64. Rotating handle; 7. Inlet pipe; 8. First detection tube; 9. First pressure test gauge; 10. Connecting hose; 11. Inlet hose; 12. Air guide pipe; 13. Second detection tube; 14. Second pressure test gauge; 15. Fixing handle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] Reference Figure 1-5 , a central air-conditioning heat exchange tube leakage detection device includes a heat exchange tube body 1, a first sealed plate 2 and a second sealed plate 3 are symmetrically arranged at both ends of the heat exchange tube body 1, the inner side walls of the first sealed plate 2 and the second sealed plate 3 are both provided with an inner fastening component 5 and an outer fastening component 6, an air intake pipe 7 passes through the first sealed plate 2, a first detection tube 8 passes through the first sealed plate 2, a first pressure detection gauge 9 is fixedly installed on the outer side wall of the first sealed plate 2, the first detection tube 8 is connected to the first pressure detection gauge 9 through a connecting hose 10, the outer end of the air intake pipe 7 is connected to the air intake hose 11, and the other end of the air intake pipe 7 is connected to an air guide tube 12 extending into the heat exchange tube body 1, the second sealed plate 3 is connected to the second detection tube 13, a second pressure detection gauge 14 is fixedly installed on the outer side wall of the second sealed plate 3, and the second detection tube 13 is connected to the second pressure detection gauge 14 through the connecting hose 10.

[0028] The internal fastening assembly 5 includes a fixed box 51 fixedly installed in the center of the inner side wall of the first sealed plate 2 and the second sealed plate 3. An active rotating rod 52 is rotatably installed in the fixed box 51. The active rotating rod 52 rotates through the first sealed plate 2 and the second sealed plate 3. A rotating handle 53 is fixedly installed at the outer end of the active rotating rod 52.

[0029] The active rotating rod 52 is coaxially fixedly connected to the active bevel gear 54, and the driven rotating rods 55 are symmetrically installed on both sides of the active rotating rod 52. The driven rotating rods 55 rotate through the outer wall of the fixed box 51. The driven rotating rods 55 are coaxially fixedly connected to the driven bevel gear 56, and the active bevel gear 54 is meshed with the driven bevel gear 56.

[0030] The end of the driven rotating rod 55 is provided with a thread, and the threaded sleeve 57 is provided on the threaded sleeve 57 at the end of the driven rotating rod 55. An inner fastening plate 58 is fixedly installed on the end of the threaded sleeve 57. A fastening rubber pad 59 is fixedly installed on the outer wall of the inner fastening plate 58. The fastening rubber pad 59 is in contact with the inner wall of the heat exchange tube body 1.

[0031] The external fastening assembly 6 includes a pair of mounting blocks 61 symmetrically fixedly mounted on the inner walls of the first sealed plate 2 and the second sealed plate 3. The mounting blocks 61 are threaded with a threaded column 62, and an external fastening plate 63 is fixedly mounted on the end of the threaded column 62. A rotating handle 64 is fixedly mounted on the top of the threaded column 62, and the inner wall of the external fastening plate 63 is in contact with the outer wall of the heat exchange tube body 1.

[0032] Sealed rubber rings 4 are fixedly installed on the inner walls of the first sealed plate 2 and the second sealed plate 3 , both ends of the heat exchange tube body 1 are in contact with the sealed rubber rings 4 , and fixed handles 15 are fixedly installed on the outer walls of the first sealed plate 2 and the second sealed plate 3 .

[0033] In the present invention, when the device is placed in the heat exchange tube body 1, the rotating handle 53 is rotated so that the active rotating rod 52 drives the active bevel gear 54 to rotate, the active bevel gear 54 drives the driven bevel gear 56 to rotate, and the driven bevel gear 56 drives the driven rotating rod 55 to rotate. As the driven rotating rod 55 rotates, the thread at the end of the driven rotating rod 55 causes the threaded sleeve 57 to move outward, so that the inner fastening plate 58 and the fastening rubber pad 59 are in contact with the inner wall of the heat exchange tube body 1. After the device is placed in the heat exchange tube body 1, the rotating handle 64 is rotated so that the threaded column 62 rotates synchronously, thereby pushing the outer fastening plate 63, and the inner wall of the outer fastening plate 63 is tightened. It fits with the outer wall of the heat exchange tube body 1, so that the inner fastening component 5 and the outer fastening component 6 cooperate to fasten the device for installation, and then the two ends of the heat exchange tube body 1 are sealed by the sealed rubber ring 4, and nitrogen is transported into the heat exchange tube body 1 through the air intake hose 11, the air intake pipe 7 and the air guide pipe 12. As the nitrogen gradually fills the heat exchange tube body 1, the nitrogen enters the first pressure detection gauge 9 through the first detection tube 8 and enters the second pressure detection gauge 14 through the second detection tube 13, thereby detecting the air pressure at both ends of the heat exchange tube body 1. When a leak appears on the heat exchange tube body 1, the leak location can be displayed by spraying soapy water on the surface of the heat exchange tube body 1.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A central air-conditioning heat exchange tube leakage detection device, comprising a heat exchange tube body (1), characterized in that: The heat exchange tube body (1) is symmetrically provided with a first sealing plate (2) and a second sealing plate (3) at both ends; the inner side walls of the first sealing plate (2) and the second sealing plate (3) are both provided with an inner fastening assembly (5) and an outer fastening assembly (6); the first sealing plate (2) is penetrated by an air inlet pipe (7); the first sealing plate (2) is penetrated by a first detection tube (8); the outer side wall of the first sealing plate (2) is fixedly installed with a first pressure detection gauge (9); the first detection tube (8) is connected to the first pressure gauge (9); The pressure detection gauge (9) is connected via a connecting hose (10); the outer end of the air intake pipe (7) is connected to an air intake hose (11); the other end of the air intake pipe (7) is connected to an air guide pipe (12) extending into the heat exchange tube body (1); the second sealed plate (3) is connected to a second detection tube (13); a second pressure detection gauge (14) is fixedly installed on the outer side wall of the second sealed plate (3); the second detection tube (13) and the second pressure detection gauge (14) are connected via a connecting hose (10).

2. A central air conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: The inner fastening assembly (5) comprises a fixed box (51) fixedly mounted at the center of the inner side wall of the first sealed plate (2) and the second sealed plate (3); an active rotating rod (52) is rotatably mounted in the fixed box (51); the active rotating rod (52) rotates through the first sealed plate (2) and the second sealed plate (3); a rotating handle (53) is fixedly mounted at the outer end of the active rotating rod (52).

3. A central air conditioning heat exchange tube leakage detection device according to claim 2, characterized in that: The active rotating rod (52) is coaxially fixedly connected to a driving bevel gear (54), and driven rotating rods (55) are symmetrically mounted on both sides of the active rotating rod (52). The driven rotating rods (55) are rotated to penetrate the outer wall of the fixed box (51), and the driven rotating rods (55) are coaxially fixedly connected to a driven bevel gear (56). The active bevel gear (54) and the driven bevel gear (56) are meshed.

4. A central air conditioning heat exchange tube leakage detection device according to claim 3, characterized in that: The end of the driven rotating rod (55) is provided with a thread, the end of the driven rotating rod (55) is threadedly sleeved with a threaded sleeve (57), the end of the threaded sleeve (57) is fixedly mounted with an inner fastening plate (58), the outer side wall of the inner fastening plate (58) is fixedly mounted with a fastening rubber pad (59), and the fastening rubber pad (59) is in contact with the inner side wall of the heat exchange tube body (1).

5. The central air-conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: The external fastening assembly (6) comprises a pair of mounting blocks (61) symmetrically fixedly mounted on the inner side walls of the first sealing plate (2) and the second sealing plate (3); a threaded column (62) is threaded through the mounting block (61); an external fastening plate (63) is fixedly mounted at the end of the threaded column (62); a rotating handle (64) is fixedly mounted at the top of the threaded column (62); and the inner side wall of the external fastening plate (63) is in contact with the outer side wall of the heat exchange tube body (1).

6. A central air-conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: Sealed rubber rings (4) are fixedly mounted on the inner walls of the first sealed plate (2) and the second sealed plate (3), both ends of the heat exchange tube body (1) are in contact with the sealed rubber rings (4), and fixed handles (15) are fixedly mounted on the outer walls of the first sealed plate (2) and the second sealed plate (3).

Images