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

Abstract

The invention discloses a central air conditioner heat exchange tube leakage point detection device, which relates to the technical field of central air conditioners and comprises an industrial personal computer, a detection tube, a bearing mechanism and a detection mechanism. The bearing mechanism comprises a bearing frame, a clamping unit used for clamping and fixing the heat exchange pipe fitting, a rotating assembly used for driving the clamping unit and the heat exchange pipe fitting to rotate and a winding assembly used for unwinding or winding the multiple sets of detection pipes. The detection mechanism comprises a detection assembly arranged at the end of the detection pipe, an expansion assembly arranged on the outer side of the detection head, a water spraying assembly arranged at the front end of the expansion assembly and a cleaning assembly arranged on the outer side of the water spraying assembly. The technical problems that a traditional detection device can only detect a straight pipe, and scale generated in the heat exchange pipe after long-time work affects the heat exchange efficiency and affects the leakage point detection result of the heat exchange pipe are solved.

Description

Technical Field

[0001] The invention relates to the technical field related to central air conditioners, and in particular to a central air conditioner heat exchange tube leakage detection device. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. It adopts the principle of liquid vaporization refrigeration to provide the required cooling capacity for the air conditioning system to offset the heat load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the heating and cooling loads of the indoor environment. The lithium bromide refrigerator has many unique advantages and has developed rapidly in recent years. Several heat exchange tubes are arranged in the condenser, evaporator and absorber of the lithium bromide refrigeration unit. In actual use, due to the quality of the heat exchange tube itself, liquid impact or solution corrosion, the heat exchange tube is often damaged, resulting in leakage points on the tube body, resulting in a decrease in the refrigeration effect. In severe cases, the lithium bromide solution will crystallize and block the pump body.

[0003] The patent document with patent number CN108318192B discloses a central air-conditioning heat exchange tube leakage detection device, including: an industrial computer, a detection head, a sealing sleeve, a sleeve extrusion device and a probe movement device. The detection head is connected to the industrial computer through a vacuum tube. The lower end of the detection head is provided with a sealing sleeve sleeve, and the sleeve extrusion device is sleeved on the middle part of the detection head. The upper end of the detection head is also sleeved with a probe movement device; the repair device includes: an elastic sleeve, an expansion ring and a locking mechanism. An expansion ring is provided at both ends of the elastic sleeve, and the two expansion rings are sleeved inside the elastic sleeve, and the locking mechanism is clamped on the two expansion rings; a segmented pressure holding experiment is performed on the inside of the heat exchange tube to find the leakage point inside the heat exchange tube; the elastic sleeve is fixed inside the heat exchange tube by driving the two expansion rings through the locking mechanism to achieve repair of the leakage point of the heat exchange tube.

[0004] However, in actual use, the inventors found that most heat exchange tubes are coiled tubes (such as Figure 1 or Figure 2 As shown, it includes multiple U-shaped tubes), and the above-mentioned detection device cannot be bent along the U-shaped tube and can only detect the straight tube; at the same time, since the working temperature of the heat exchange tube is usually above 50 degrees, scale is easily formed inside the heat exchange tube after long-term operation, which will reduce the heat exchange efficiency on the one hand, and on the other hand, the formation of scale may affect the detection result of the leakage point of the heat exchange tube. Summary of the invention

[0005] In order to solve the defects in the prior art, the present invention provides a central air-conditioning heat exchange tube leakage detection device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a central air-conditioning heat exchange tube leakage detection device, comprising an industrial computer, characterized in that one end of the industrial computer is connected to a plurality of detection tubes; A bearing mechanism, wherein a plurality of groups of heat exchange pipes are placed in the middle of the bearing mechanism, and the bearing mechanism comprises a bearing frame, a clamping unit for clamping and fixing the heat exchange pipes, a rotating assembly for driving the clamping unit and the heat exchange pipes to rotate, and a winding assembly for unwinding or winding the plurality of groups of detection tubes; A detection mechanism, one end of which is connected to the detection tube, and the other end is placed at the inlet or outlet of the heat exchange pipe, and the detection mechanism includes a detection component arranged at the end of the detection tube, an expansion component arranged outside the detection head, a water spray component arranged at the rear end of the expansion component, and a cleaning component arranged at the rear end of the water spray component; After the detection mechanism is placed inside the heat exchange tube, the water spray assembly can drive the detection mechanism to move inside the heat exchange tube and at the same time drive the cleaning assembly to clean the dirt on the inner wall of the heat exchange tube. In conjunction with the detection assembly, the leakage point detection work of the heat exchange tube can be realized.

[0007] As a preferred technical solution of the present invention, the detection assembly includes a detection head arranged at the end of the detection tube and an air supply pipe arranged inside the detection tube and connected to the detection head, and the other end of the air supply pipe is connected to the industrial computer; The expansion assembly includes a protective sleeve fixedly mounted on the outside of the detection head, an inflatable expansion ring wrapped around the outside of the protective sleeve, a plurality of first balls movably arranged on the protective sleeve, and an inflatable tube with one end connected to the inflatable expansion ring and the other end connected to the industrial computer.

[0008] As a preferred technical solution of the present invention, the water spray assembly includes: A support ring, fixedly sleeved on the outer side of the detection tube; A first water spray head is provided in a plurality of groups and arranged in an array along the circumferential direction of the support ring, wherein the first water spray head is connected to a water inlet pipe arranged inside the detection tube, and the other end of the water inlet pipe is connected to a booster water pump; a second water spray head, the second water spray head is oriented in the opposite direction to the first water spray head and is also connected to the booster water pump through a water inlet pipe; A second ball bearing is arranged in a rolling manner inside the telescopic sleeve. The telescopic sleeve is fixedly connected to the support ring through a buffer spring. The support ring is also fixedly provided with a support sleeve at a position corresponding to the telescopic sleeve.

[0009] As a preferred technical solution of the present invention, the angle between the orientation of the first water spray head and the second water spray head and the axis of the support ring is α, and the range of α is between 30° and 60°.

[0010] As a preferred technical solution of the present invention, the cleaning assembly includes a bearing unit fixedly arranged on the outside of the detection tube, a brush head sleeved on the bearing unit, and a plurality of groups of bristle units arranged on the outside of the brush head.

[0011] As a preferred technical solution of the present invention, a plurality of groups of connecting springs are provided between the protective sleeve and the supporting ring, and between the brush head and the supporting ring.

[0012] As a preferred technical solution of the present invention, the rotating assembly includes: A supporting transverse plate, used for fixing the clamping unit; A supporting vertical plate, fixedly connected to the supporting horizontal plate and having one end fixedly connected to a rotating shaft; The first driving unit is arranged to transmit transmission to the rotating shaft.

[0013] As a preferred technical solution of the present invention, the wire winding assembly includes a wire winding unit arranged on the supporting horizontal plate and a guiding unit arranged on the supporting vertical plate.

[0014] As a preferred technical solution of the present invention, the winding unit includes a winding roller fixedly arranged on the upper end of the supporting horizontal plate, a rotating disk rotatably arranged on the upper end of the winding roller, and a threading disk fixedly connected to the rotating disk, and the lower ends of several rotating disks are fixedly connected with a rotating shaft, the rotating shaft passes through the lower end of the supporting horizontal plate and is connected to a transmission belt, and the transmission belt is arranged for transmission with the second driving unit; The guide unit includes a support rod fixedly arranged on the support vertical plate and a plurality of guide pulleys fixedly arranged on the support rod. The detection tube enters into the interior of the heat exchange pipe along the guide pulley.

[0015] As a preferred technical solution of the present invention, a wastewater collection box is placed on the upper end of the support frame at a position corresponding to the heat exchange pipe.

[0016] The beneficial effects of the present invention are: 1. In the present invention, a detection mechanism including a detection component, an expansion component and a water spray component is set. After the detection mechanism is placed inside the heat exchange pipe, the water spray component will spray water on the inner wall of the heat exchange pipe when it is working and provide a reverse driving force to the detection mechanism, thereby driving the detection mechanism to move inside the heat exchange pipe. The detection component, the expansion component and the water spray component are integrated so that the detection mechanism can smoothly pass through the U-tube area. Therefore, the detection mechanism can detect pipes of various shapes.

[0017] 2. In the present invention, a cleaning component is arranged in cooperation with a water spray component. When the detection mechanism is moving, the brush unit in the cleaning component will also scrape and clean the inner wall of the heat exchange pipe. In addition, a part of the water flow sprayed by the water spray component will be sprayed on the inner wall of the heat exchange pipe to moisten the scale, which is convenient for cleaning the cleaning component. Another part of the water flow will also be sprayed on the brush unit and drive the brush unit and the brush head to rotate outside the detection tube. Therefore, the brush unit can realize spiral movement inside the heat exchange pipe and improve the cleaning effect of the scale on the inner wall of the heat exchange pipe. On the one hand, the heat exchange efficiency of the heat exchange pipe is guaranteed. On the other hand, the detection result of the leakage point of the heat exchange pipe is also guaranteed after the scale is removed.

[0018] 3. In the present invention, a bearing mechanism including a clamping unit and a rotating assembly is provided. When in use, multiple groups of clamping units provided on the bearing mechanism can simultaneously fix multiple groups of heat exchange pipes. Therefore, a single inspection can realize simultaneous inspection of multiple groups of heat exchange pipes, thereby improving the inspection efficiency of the heat exchange pipes. On the other hand, the rotating assembly can drive the multiple groups of heat exchange pipes to rotate during operation, thereby facilitating the disc-shaped heat exchange pipes to discharge the water and scale sprayed by the water spray assembly in a timely manner, thereby facilitating subsequent inspection work.

[0019] 4. In the present invention, a wire winding assembly is provided to cooperate with the detection mechanism. When the water spray assembly is working and drives the detection mechanism to move inside the heat exchange pipe, the wire winding unit in the wire winding assembly can loosen the detection tube to facilitate the movement of the detection mechanism and the detection tube. At the same time, the setting of the guide unit can ensure that the detection tube is stably transported forward without deviation, derailment, etc. In addition, when the detection work is completed, the wire winding assembly can also cooperate with the detection mechanism to quickly complete the recovery of the detection tube for the next detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2It is a front view of the present invention.

[0022] Figure 3 It is a structural diagram of the detection mechanism.

[0023] Figure 4 It is a schematic diagram of the planar structure of the detection mechanism.

[0024] Figure 5 It is a schematic diagram of the structure of the expansion component.

[0025] Figure 6 It is a schematic diagram of the structure of the water spray component.

[0026] Figure 7 It is a schematic diagram of the planar structure of the water spray component.

[0027] Figure 8 A cross-sectional view of the detection tube.

[0028] Fig. 9 It is a cross-sectional view of the second ball position in the water spray assembly.

[0029] Fig.10 It is a structural schematic diagram of the detection mechanism when it moves horizontally inside the heat exchange tube.

[0030] Fig.11 It is a schematic diagram of the structure of the detection mechanism when it bends and moves inside the heat exchange tube.

[0031] Fig.12 It is a schematic diagram of the structure of the rotating component and the winding component.

[0032] Fig.13 for Fig.12 A local enlarged schematic diagram of point A in the middle.

[0033] Fig.14 This is a schematic diagram of the structure of the winding assembly from another angle.

[0034] Fig.15 It is a schematic diagram of the working state of the present invention.

[0035] In the figure: 1, industrial computer; 2, detection tube; 3, bearing mechanism; 31, bearing frame; 32, clamping unit; 33, rotating assembly; 331, supporting horizontal plate; 332, supporting vertical plate; 333, rotating shaft; 334, first driving unit; 34, winding assembly; 341, winding unit; 3411, winding roller; 34111, annular groove; 3412, rotating disk; 3413, threading disk; 3414, rotating shaft; 3415, transmission belt; 3416, second driving unit; 3417, surrounding plate; 34171, through hole; 342, guide unit; 3421, support rod; 3422, guide pulley; 4, heat exchange pipe fittings; 41, Import; 42, export; 5, detection mechanism; 51, detection assembly; 511, detection head; 512, air supply pipe; 52, expansion assembly; 521, protection sleeve; 522, inflatable expansion ring; 523, first ball; 524, inflatable pipe; 53, water spray assembly; 531, support ring; 532, first water spray head; 533, water inlet pipe; 534, booster pump; 535, second water spray head; 536, second ball; 537, telescopic sleeve; 538, buffer spring; 539, support sleeve; 54, cleaning assembly; 541, bearing unit; 542, brush head; 543, bristle unit; 544, connecting spring; 6, wastewater collection box. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example

[0037] like Figure 1-Figure 4 As shown, a central air-conditioning heat exchange tube leakage detection device comprises an industrial computer 1, a detection tube 2, a bearing mechanism 3 and a detection mechanism 5, wherein one end of the industrial computer 1 is connected to a plurality of detection tubes 2; a plurality of heat exchange pipe fittings 4 are placed in the middle of the bearing mechanism 3, the bearing mechanism 3 comprises a bearing frame 31, a clamping unit 32 for clamping and fixing the heat exchange pipe fittings 4, a rotating assembly 33 for driving the clamping unit 32 and the heat exchange pipe fittings 4 to rotate, and a winding assembly 34 for unwinding or rewinding a plurality of detection tubes 2; one end of the detection mechanism 5 is connected to the detection tube 2, and the other end is placed at the inlet 41 or outlet 42 of the heat exchange pipe fitting 4, the detection mechanism 5 comprises a detection assembly 51 arranged at the end of the detection tube 2, an expansion assembly 52 arranged outside the detection head 511, a water spray assembly 53 arranged at the rear end of the expansion assembly 52, and a cleaning assembly 54 arranged at the rear end of the water spray assembly 53; After the detection mechanism 5 is placed into the interior of the heat exchange tube 4, the water spray component 53 can drive the detection mechanism 5 to move inside the heat exchange tube 4 and at the same time drive the cleaning component 54 to clean the dirt on the inner wall of the heat exchange tube 4. In conjunction with the detection component 51, the leakage point detection work of the heat exchange tube 4 can be realized.

[0038] Among them, by setting up a supporting mechanism 3 in cooperation with the detection mechanism 5, simultaneous detection of multiple groups of heat exchange fittings 4 can be achieved, thereby improving the detection efficiency of the heat exchange fittings 4, and when the water spray component 53 is working, it will spray water on the inner wall of the heat exchange fittings 4 and provide a reverse driving force to the detection mechanism 5, thereby driving the detection mechanism 5 to move inside the heat exchange fittings 4, so that the detection mechanism 5 can smoothly enter various area positions inside the heat exchange fittings 4, and then cooperate with the cleaning component 54 to simultaneously realize the cleaning work of the inner wall of the heat exchange fittings 4.

[0039] In detail, the detection tube 2 is a flexible tube. When working, the heat exchange pipe 4 is first fixed between the two groups of clamping units 32, and then the two groups of detection mechanisms 5 are respectively sent to the inlet 41 and the outlet 42 of the heat exchange pipe 4. The two groups of detection mechanisms 5 work synchronously and meet at the middle position of the heat exchange pipe 4. After meeting, the cleaning of the inner wall of the heat exchange pipe 4 is completed. Then, the inlet 41 and the outlet 42 are set upward, and the water spraying assembly 53 is started again to fill the inner wall of the heat exchange pipe 4 with water. If a leaking point is found on the heat exchange pipe 4, it means that the leaking situation of the leaking point is more obvious (the aperture of the leaking point is larger). At this time, the heat exchange pipe 4 needs to be removed first to rework and repair the leaking point; If there is no water leakage, it does not mean that there is no leakage on the heat exchange pipe 4. At this time, it is necessary to drain all the water inside the heat exchange pipe 4 first, and use the detection component 51 to pass nitrogen into the inside of the heat exchange pipe 4 to perform a pressure holding test (the pressure holding test can be performed by vacuuming or passing nitrogen). By observing the changes in the pressure gauge, it is possible to determine whether there is a leakage on the heat exchange pipe 4. At the same time, the inside of the heat exchange pipe 4 can also be inspected in sections. Since the comparative document - the patent document with patent number CN108318192B has disclosed the detection (segmented detection) process in detail, the detailed process of subsequent leakage detection using nitrogen will not be repeated.

[0040] Further, if Figure 3-Figure 8As shown, the detection component 51 includes a detection head 511 arranged at the end of the detection tube 2 and an air supply pipe 512 arranged inside the detection tube 2 and connected to the detection head 511, and the other end of the air supply pipe 512 is connected to the industrial computer 1; the expansion component 52 includes a protective sleeve 521 fixedly mounted on the outside of the detection head 511, an inflatable expansion ring 522 wrapped around the outside of the protective sleeve 521, a plurality of first balls 523 movably arranged on the protective sleeve 521, and an inflatable tube 524 one end of which is connected to the inflatable expansion ring 522 and the other end of which is connected to the industrial computer 1.

[0041] Wherein, by providing the detection component 51 and the expansion component 52 , a pressure holding test can be performed on the heat exchange pipe 4 .

[0042] In detail, when in use, first move the two groups of detection mechanisms 5 inside the heat exchange pipe fitting 4 to a suitable position, and then the industrial computer 1 inflates the interior of the inflatable expansion ring 522 through the inflation tube 524, so that the inflatable expansion ring 522 expands and abuts against the inner wall of the heat exchange pipe fitting 4, thereby achieving a sealing effect on the heat exchange pipe fitting 4. At this time, the area between the two groups of detection mechanisms 5 is a sealing area, and then the industrial computer 1 sends the gas into the detection head 511 through the air delivery pipe 512 (or extracts the gas between the two groups of detection mechanisms 5 from the detection head 511 to form a vacuum in the space), and then observes the changes in the barometer to complete the pressure holding experiment.

[0043] It should be noted that, although the uninflated inflatable expansion ring 522 will not contact the inner wall when moving in a straight line inside the heat exchange pipe 4, when moving in the U-shaped pipe area, the inflatable expansion ring 522 may contact the inner wall of the heat exchange pipe 4 during the turning process, so the inflatable expansion ring 522 needs to be made of a wear-resistant material, such as nitrile rubber, which has good wear resistance and corrosion resistance; The industrial computer 1 is provided with a plurality of air supply ports and a plurality of air charging ports corresponding to the plurality of air supply pipes 512 and the plurality of air charging pipes 524 , respectively. The air supply ports and the air charging ports can work independently of each other.

[0044] Further, if Figure 3-Figure 9As shown, the water spray assembly 53 mainly includes a support ring 531, a first water spray head 532, a second water spray head 535 and a second ball 536. The support ring 531 is fixedly sleeved on the outside of the detection tube 2; the first water spray head 532 is provided with a plurality of groups and is arranged in an array along the circumferential direction of the support ring 531. The first water spray head 532 is connected to a water inlet pipe 533 provided inside the detection tube 2, and the other end of the water inlet pipe 533 is connected to a booster water pump 534; the second water spray head 535 is opposite to the first water spray head 532 and is also connected to the booster water pump 534 through the water inlet pipe 533; the second ball 536 is rollingly arranged inside a telescopic sleeve 537, and the telescopic sleeve 537 is fixedly connected to the support ring 531 through a buffer spring 538. The support ring 531 is also fixedly provided with a support sleeve 539 at a position corresponding to the telescopic sleeve 537; The angle between the first water spray head 532 and the second water spray head 535 and the axis of the support ring 531 is α, and the range of α is between 30° and 60°, preferably, α is 45°; A plurality of connection springs 544 are disposed between the protective sleeve 521 and the support ring 531 , and between the brush head 542 and the support ring 531 .

[0045] Among them, by setting a water spray component 53 to cooperate with the detection component 51 and the expansion component 52, after the detection mechanism 5 is placed inside the heat exchange pipe 4, the water spray component 53 will spray water on the inner wall of the heat exchange pipe 4 when working and provide a reverse driving force to the detection mechanism 5, thereby driving the detection mechanism 5 to move inside the heat exchange pipe 4, and the detection component 51, the expansion component 52 and the water spray component 53 are integrated, so that the detection mechanism 5 can smoothly pass through the U-shaped pipe area. Therefore, the detection mechanism 5 can be used for detection of pipes of various shapes.

[0046] In detail, when working, after the water spray assembly 53, the detection assembly 51, and the expansion assembly 52 are all placed inside the heat exchange pipe 4, the booster water pump 534 is started and the external water flow is respectively sent to the first water spray head 532 along the multiple water inlet pipes 533. Since the first water spray head 532 is arranged at an angle, part of the water sprayed by the first water spray head 532 will be sprayed at an angle on the inner wall of the heat exchange pipe 4 and generate a reverse force, thereby causing the support ring 531 to move. When the support ring 531 moves, the second ball 536 arranged on the outer side of the support ring 531 will roll closely against the inner wall of the heat exchange pipe 4, which can reduce the friction between the detection mechanism 5 and the inner wall of the heat exchange pipe 4, so that the detection mechanism 5 can move under the force of the water flow; When entering the U-shaped tube, the detection component 51 and the expansion component 52 will first enter the interior of the U-shaped tube. Since the outer diameters of the detection component 51 and the expansion component 52 are smaller than the inner wall of the heat exchange tube 4, the detection component 51 and the expansion component 52 can smoothly enter the interior of the U-shaped tube. After being squeezed by the U-shaped tube, the connecting spring 544 will be compressed, and then the water spray component 53 will enter the interior of the U-shaped tube. (As shown in FIG. Fig.10 As shown in the figure, as the water spray assembly 53 descends, the curved portion of the U-shaped tube applies pressure to the second ball 536 on the left side, thereby squeezing the second ball 536 and driving the telescopic sleeve 537 and the buffer spring 538 to enter the interior of the support sleeve 539. It can be seen that at this time, the first water spray head 532 on the left side is closer to the inner wall of the U-shaped tube than the first water spray head 532 on the right side. Therefore, the left half of the detection mechanism 5 is subjected to a greater reaction force, causing the detection assembly 51, the expansion assembly 52, and the water spray assembly 53 to drive the detection tube 2 to bend as a whole (as shown in the figure). Fig.11 As shown), the detection mechanism 5 is moved inside the U-shaped tube; Similarly, when the detection mechanism 5 needs to exit the heat exchange pipe 4 , the booster pump 534 is started and sends water along the multiple water inlet pipes 533 to the second water spray head 535 , thereby achieving reverse movement of the detection mechanism 5 .

[0047] It should be noted that, in order to facilitate the expansion component 52 to pass through the U-shaped tube smoothly, a plurality of first balls 523 are arranged at the front end of the protective sleeve 521. This arrangement can make it easier for the expansion component 52 to slide along the curved tube to ensure that the detection mechanism 5 can pass through the curved tube smoothly. Similarly, a plurality of first balls 523 can also be arranged on the outside of the brush head 542 in the cleaning component 54 to ensure that the detection mechanism 5 can reversely exit the curved tube. The multiple water inlet pipes 533 on one side of the support frame 31 are connected to the water outlet of a booster water pump 534 .

[0048] Further, if Figure 3-Figure 4 As shown, the cleaning assembly 54 includes a bearing unit 541 fixedly arranged on the outside of the detection tube 2 , a brush head 542 sleeved on the bearing unit 541 , and a plurality of groups of bristle units 543 arranged on the outside of the brush head 542 .

[0049] Among them, by setting the cleaning component 54 to cooperate with the water spray component 53, during the movement of the detection mechanism 5, the brush unit 543 in the cleaning component 54 will also scrape and clean the inner wall of the heat exchange pipe 4. In addition, a part of the water flow sprayed by the water spray component 53 will be sprayed on the inner wall of the heat exchange pipe 4 to wet the scale, which is convenient for cleaning the cleaning component 54. Another part of the water flow will also be sprayed on the brush unit 543 and drive the brush unit 543 and the brush head 542 to rotate outside the detection tube 2. Therefore, the brush unit 543 can realize spiral movement inside the heat exchange pipe 4 and improve the cleaning effect of the scale on the inner wall of the heat exchange pipe 4. On the one hand, the heat exchange efficiency of the heat exchange pipe 4 is guaranteed. On the other hand, after the scale is removed, the detection result of the leakage point of the heat exchange pipe 4 is also guaranteed. When the detection mechanism 5 just enters the interior of the heat exchange tube 4 from the inlet 41 and the outlet 42, the inlet 41 and the outlet 42 of the heat exchange tube 4 need to be set upward to facilitate the entry of the detection mechanism 5. When the water spray assembly 53 works, the rotating assembly 33 works and drives the heat exchange tube 4 to rotate so that the inlet 41 and the outlet 42 of the heat exchange tube 4 are tilted downward. This arrangement allows the water flow and scale inside the heat exchange tube 4 to be discharged along the heat exchange tube 4.

[0050] It should be noted that in order to facilitate the water flow sprayed by the cleaning component 54 to smoothly drive the brush head 542 and the bristle unit 543 to rotate on the bearing unit 541, the bristle units 543 in the same row on the brush head 542 are arranged to be inclined (along the axial direction of the brush head 542) to increase the contact area between the bristle unit 543 and the water flow. Example

[0051] The components that are the same or corresponding to those in the first embodiment are marked with the same reference numerals as those in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: Further, if Fig.12 As shown, the rotating assembly 33 includes a supporting transverse plate 331, a supporting vertical plate 332 and a first driving unit 334. The supporting transverse plate 331 is used to fix the clamping unit 32; the supporting vertical plate 332 is fixedly connected to the supporting transverse plate 331 and one end of which is fixedly connected to a rotating shaft 333; the first driving unit 334 is arranged in a transmission with the rotating shaft 333, thereby being able to drive the supporting vertical plate 332 and the supporting transverse plate 331 to rotate.

[0052] Among them, by setting the supporting mechanism 3 including the clamping unit 32 and the rotating assembly 33, when in use, the multiple groups of clamping units 32 set on the supporting mechanism 3 can fix multiple groups of heat exchange pipes 4 at the same time. Therefore, one detection work can realize the simultaneous detection of multiple groups of heat exchange pipes 4, thereby improving the detection efficiency of the heat exchange pipes 4. On the other hand, the rotating assembly 33 can drive the multiple groups of heat exchange pipes 4 to rotate during work, thereby facilitating the disc-shaped heat exchange pipes 4 to discharge the water flow and scale sprayed by the water spray assembly 53 in time, which is convenient for subsequent detection work.

[0053] It should be noted that, in actual use, in order to facilitate the movement of the present invention, the first driving unit 334 can be replaced by a handle, so that the operator can turn the handle to drive the support horizontal plate 331 and the support vertical plate 332 to rotate, and a number of universal wheels can be set at the bottom of the carrier 31 to facilitate the movement of the detection device.

[0054] Further, if Figure 12-14 As shown, the winding assembly 34 includes a winding unit 341 arranged on the supporting horizontal plate 331 and a guide unit 342 arranged on the supporting vertical plate 332, the winding unit 341 includes a winding roller 3411 fixedly arranged on the upper end of the supporting horizontal plate 331, a rotating disk 3412 rotatably arranged on the upper end of the winding roller 3411, and a threading disk 3413 fixedly connected to the rotating disk 3412, and the lower ends of several rotating disks 3412 are fixedly connected with a rotating shaft 3414, the rotating shaft 3414 passes through the lower end of the supporting horizontal plate 331 and is connected to a transmission belt 3415, and the transmission belt 3415 is arranged for transmission with a second driving unit 3416; The guide unit 342 includes a support rod 3421 fixedly disposed on the support vertical plate 332 and a plurality of guide pulleys 3422 fixedly disposed on the support rod 3421 . The detection tube 2 enters into the interior of the heat exchange pipe 4 along the guide pulley 3422 .

[0055] Among them, by setting up a winding assembly 34 to cooperate with the detection mechanism 5, when the water spray assembly 53 works and drives the detection mechanism 5 to move inside the heat exchange pipe 4, the winding unit 341 in the winding assembly 34 can loosen the detection tube 2 to facilitate the movement of the detection mechanism 5 and the detection tube 2. At the same time, the setting of the guide unit 342 can ensure that the detection tube 2 is stably transported forward without deviation, derailment, etc. In addition, when the detection work is completed, the winding assembly 34 can also cooperate with the detection mechanism 5 to quickly complete the recovery of the detection tube 2 for the next detection use.

[0056] In detail, during use, when the water spray assembly 53 is working, it will drive the detection tube 2 to move toward the interior of the heat exchange tube 4. At the same time, the second driving unit 3416 works and drives the rotating shaft 3414 to rotate through the transmission belt 3415. After the rotating shaft 3414 rotates, it will drive the rotating disk 3412 at the upper end of the winding roller 3411 to rotate. After the rotating disk 3412 rotates, it will drive the threading disk 3413 to rotate. When the threading disk 3413 rotates, it will pull up the detection tube 2 wound on the outside of the winding roller 3411, and allow this part of the detection tube 2 to quickly enter the interior of the heat exchange tube 4; similarly, when the detection mechanism 5 withdraws from the interior of the heat exchange tube 4, the second driving unit 3416 drives the rotating disk 3412 and the threading disk 3413 to rotate in the opposite direction through the transmission belt 3415, and winds the excess detection tube 2 withdrawn from the heat exchange tube 4 around the outside of the winding roller 3411, which is also conducive to the rapid withdrawal of the detection mechanism 5.

[0057] It should be noted that in order to enable the threading disk 3413 to rotate stably on the outside of the winding roller 3411, a surrounding plate 3417 is fixedly provided at the lower end of the threading disk 3413, and the other end of the surrounding plate 3417 is slidably set on the outside of the winding roller 3411, and an annular groove 34111 is provided on the outside of the winding roller 3411 at a position corresponding to the surrounding plate 3417, wherein a through hole 34171 coaxially arranged and used for the detection tube 2 to pass through is provided on the surrounding plate 3417 and the threading disk 3413. Example

[0058] The components identical or corresponding to those in the second embodiment are marked with the same reference numerals as those in the second embodiment. For the sake of simplicity, only the differences from the second embodiment are described below. The third embodiment differs from the second embodiment in that: Further, if Fig.15 As shown, a wastewater collection box 6 is placed on the upper end of the support frame 31 at a position corresponding to the heat exchange pipe 4 , and the industrial computer 1 and the booster water pump 534 are both fixedly arranged on the support frame 31 .

[0059] The wastewater collection box 6 is provided to cooperate with the detection mechanism 5 to collect wastewater and scale flowing out from the inside of the heat exchange pipe 4; In addition, the portion of the detection tube 2 wound around the bottom of the winding roller 3411 is fixed on the supporting horizontal plate 331 (can be fixed by a fixing sticker or other means) and connected to the booster water pump 534 and the industrial computer 1. A sufficient length needs to be reserved from the portion of the detection tube 2 fixed to the supporting horizontal plate 331 to the portion connected to the booster water pump 534 and the industrial computer 1. In this way, when the supporting horizontal plate 331 rotates, it will not affect the connection between the detection tube 2 and the booster water pump 534 and the industrial computer 1. At the connection position, preferably, the length of this part of the detection tube 2 is greater than 2m. It should be noted that the detection tube 2 does not need to be set at the end close to the boosting water pump 534 and the industrial computer 1. The air supply pipe 512, the air charging pipe 524, and the water inlet pipe 533 close to the boosting water pump 534 and the industrial computer 1 are exposed to the outside, wherein the air supply pipe 512 and the air charging pipe 524 are connected to the industrial computer 1, and the water inlet pipe 533 is connected to the boosting water pump 534 (which is a conventional setting method, not shown in detail in the figure).

[0060] First, the operator fixes multiple groups of heat exchange pipes 4 on the clamping unit 32 respectively, and then puts the detection mechanism 5 on both sides of the carrying mechanism 3 into the inlet 41 and the outlet 42 of the heat exchange pipe 4 respectively, and controls the water spray component 53 to work. When the water spray component 53 works, it will spray water on the inner wall of the heat exchange pipe 4 and provide a reverse driving force to the detection mechanism 5, thereby driving the detection mechanism 5 to move inside the heat exchange pipe 4. During the movement, it will also drive the cleaning component 54 to scrape and clean the scale on the inner wall of the heat exchange pipe 4. At the same time, the winding unit 341 in the winding component 34 can loosen the detection tube 2 to facilitate the movement of the detection mechanism 5 and the detection tube 2; When the two groups of detection mechanisms 5 entering from the inlet 41 and the outlet 42 meet at the middle position of the heat exchange pipe 4, it means that the cleaning work on the inner wall of the heat exchange pipe 4 is completed. After all the sewage and scale inside the heat exchange pipe 4 are discharged, the inlet 41 and the outlet 42 are set upward, and the water spray component 53 is started to fill the inner wall of the heat exchange pipe 4 with water. If a water leak is found on the heat exchange pipe 4, the water needs to be discharged first, and then the detection mechanism 5 is controlled to return to the inlet 41 and the outlet 42 of the heat exchange pipe 4. The operator pulls out the detection mechanism 5 inside the heat exchange pipe 4 with the leak, and removes the heat exchange pipe 4 to rework and repair the leak. For the remaining heat exchange pipes 4, a segmented pressure maintenance method is adopted and a pressure maintenance test is carried out in cooperation with the detection component 51, and the process is not repeated here.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A central air conditioning heat exchange tube leakage detection device, comprising an industrial computer, characterized in that: One end of the industrial computer is connected to a plurality of groups of detection tubes; A bearing mechanism, wherein a plurality of groups of heat exchange pipes are placed in the middle of the bearing mechanism, and the bearing mechanism comprises a bearing frame, a clamping unit for clamping and fixing the heat exchange pipes, a rotating assembly for driving the clamping unit and the heat exchange pipes to rotate, and a winding assembly for unwinding or winding the plurality of groups of detection tubes; A detection mechanism, one end of which is connected to the detection tube, and the other end is placed at the inlet or outlet of the heat exchange pipe, and the detection mechanism includes a detection component arranged at the end of the detection tube, an expansion component arranged outside the detection head, a water spray component arranged at the rear end of the expansion component, and a cleaning component arranged at the rear end of the water spray component; After the detection mechanism is placed inside the heat exchange tube, the water spray assembly can drive the detection mechanism to move inside the heat exchange tube and at the same time drive the cleaning assembly to clean the dirt on the inner wall of the heat exchange tube. In conjunction with the detection assembly, the leakage point detection work of the heat exchange tube can be realized.

2. A central air conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: The detection assembly includes a detection head arranged at the end of the detection tube and an air supply pipe arranged inside the detection tube and connected to the detection head, and the other end of the air supply pipe is connected to the industrial computer; The expansion assembly includes a protective sleeve fixedly mounted on the outside of the detection head, an inflatable expansion ring wrapped around the outside of the protective sleeve, a plurality of first balls movably arranged on the protective sleeve, and an inflatable tube with one end connected to the inflatable expansion ring and the other end connected to the industrial computer.

3. A central air conditioning heat exchange tube leakage detection device according to claim 2, characterized in that: The water spray assembly comprises: A support ring, fixedly sleeved on the outer side of the detection tube; A first water spray head is provided in a plurality of groups and arranged in an array along the circumferential direction of the support ring, wherein the first water spray head is connected to a water inlet pipe arranged inside the detection tube, and the other end of the water inlet pipe is connected to a booster water pump; a second water spray head, the second water spray head is oriented in the opposite direction to the first water spray head and is also connected to the booster water pump through a water inlet pipe; A second ball bearing is arranged in a rolling manner inside the telescopic sleeve. The telescopic sleeve is fixedly connected to the support ring through a buffer spring. The support ring is also fixedly provided with a support sleeve at a position corresponding to the telescopic sleeve.

4. A central air conditioning heat exchange tube leakage detection device according to claim 3, characterized in that: The included angle between the orientation of the first water spray head and the second water spray head and the axis of the support ring is α, and the range of α is between 30° and 60°.

5. A central air-conditioning heat exchange tube leakage detection device according to claim 3, characterized in that: The cleaning component comprises a bearing unit fixedly arranged on the outside of the detection tube, a brush head sleeved on the bearing unit, and a plurality of groups of bristle units arranged on the outside of the brush head.

6. A central air conditioning heat exchange tube leakage detection device according to claim 5, characterized in that: A plurality of groups of connecting springs are arranged between the protective sleeve and the supporting ring, and between the brush head and the supporting ring.

7. A central air conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: The rotating assembly comprises: A supporting transverse plate, used for fixing the clamping unit; A supporting vertical plate, fixedly connected to the supporting horizontal plate and having one end fixedly connected to a rotating shaft; The first driving unit is arranged to transmit transmission to the rotating shaft.

8. A central air-conditioning heat exchange tube leakage detection device according to claim 7, characterized in that: The wire winding assembly includes a wire winding unit arranged on the supporting transverse plate and a guiding unit arranged on the supporting vertical plate.

9. A central air-conditioning heat exchange tube leakage detection device according to claim 8, characterized in that: The winding unit includes a winding roller fixedly arranged on the upper end of the supporting horizontal plate, a rotating disk rotatably arranged on the upper end of the winding roller, and a threading disk fixedly connected to the rotating disk, and the lower ends of several rotating disks are fixedly connected with a rotating shaft, and the rotating shaft passes through the lower end of the supporting horizontal plate and is connected to a transmission belt, and the transmission belt is arranged for transmission with the second driving unit; The guide unit includes a support rod fixedly arranged on the support vertical plate and a plurality of guide pulleys fixedly arranged on the support rod. The detection tube enters into the interior of the heat exchange pipe along the guide pulley.

10. A central air conditioning heat exchange tube leakage detection device according to claim 1, characterized in that: A wastewater collection box is placed on the upper end of the support frame at a position corresponding to the heat exchange pipe.

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