Heat exchange tube airtightness detection device capable of automatically loading and unloading

Abstract

The invention relates to the technical field of pipeline airtightness detection, and provides an automatic feeding and discharging heat exchange tube airtightness detection device which comprises a feeding part, a detection station and a discharging part which are arranged in sequence. The detection station is provided with at least two supporting plates, one side of each supporting plate is provided with a lifting ejector plate, the supporting plates are provided with a plurality of supporting grooves at intervals, the ejector plate is provided with inclined grooves with the same number as the supporting grooves and a slope close to the discharging component, and the inclined grooves and the slope are gradually lowered in the direction close to the discharging component; every time the ejector plate ascends and descends, one heat exchange tube on the feeding component can be transferred into the adjacent supporting groove, the heat exchange tubes in the supporting grooves can be transferred into the next adjacent supporting groove, and the detected heat exchange tubes can be sequentially transferred to the discharging component in the same mode. Automatic feeding and discharging can be completed through the lifting action of the ejector plate, and compared with the prior art, the feeding and discharging actions are simplified, and the overall structure is also simplified.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline air tightness detection, and in particular to an automatic loading and unloading heat exchange tube air tightness detection device. Background Art

[0002] The heat exchange tube needs to ensure strict air tightness of the tube body itself to ensure the effectiveness of the heat exchange medium when working. Therefore, the heat exchange tube needs to be tested for air tightness during its manufacturing process. The test method is usually to place the heat exchange tube in a test station that can be raised and lowered, and both ends are sealed with sealing components. There is a water tank under the test station. During the test, pressurization is applied to the heat exchange tube through the sealing components, and the test station is immersed in the water tank until the pressurization reaches the predetermined pressure and then stops. The real-time air pressure in the heat exchange tube is compared with the preset pressurization time to detect whether it is qualified.

[0003] At present, in order to improve efficiency and reduce manual intervention, heat exchange tubes can usually be automatically loaded and unloaded during air tightness testing. For example, the prior art with publication number "CN118179971A" discloses an automatic air tightness testing device for pipes with loading and unloading functions. However, in the prior art, the loading and unloading process includes pushing, lifting and lowering, and back and forth translation. The process is cumbersome and the corresponding structure is also relatively complicated. Summary of the invention

[0004] The object of the present invention is to provide a heat exchange tube air tightness detection device with automatic loading and unloading to solve the above-mentioned defects of the prior art.

[0005] The present invention is achieved through the following technical solutions:

[0006] An automatic loading and unloading heat exchange tube airtightness detection device comprises a loading component, a detection station and a unloading component arranged in sequence, the loading component is used to transport the heat exchange tube to the detection station, and the unloading component is used to keep the heat exchange tube away from the detection station; the detection station is provided with at least two support plates and a lifting plate capable of lifting and lowering is provided on one side of the support plate, the support plates are provided with a plurality of support grooves at intervals, the lifting plate is provided with inclined grooves having the same number as the support grooves and a slope close to the unloading component, and both the inclined groove and the slope are gradually lowered in a direction close to the unloading component;

[0007] After the top plate rises, a heat exchange tube on the loading component can roll into the bottom of the adjacent inclined groove. After the top plate is reset, the heat exchange tube can fall into the adjacent supporting groove. Thereafter, each time the top plate is lifted or lowered, a heat exchange tube on the loading component can be transferred to the adjacent supporting groove, and the heat exchange tube in the supporting groove can be transferred to the next adjacent supporting groove. After the inspection is completed, the heat exchange tube can be transferred to the unloading component in sequence in the same way.

[0008] Optionally, a clamping plate capable of translation is provided on the other side of the support plate, the clamping plate is provided with a first clamping portion corresponding one-to-one to each support groove, and a second clamping portion is provided on one side of the support groove. Translation of the clamping plate can clamp and fix the heat exchange tube between the first clamping portion and the second clamping portion.

[0009] Optionally, the lifting and lowering of the ejecting plate and the translation of the clamping plate are both achieved by cylinders.

[0010] Optionally, the first clamping portion and the second clamping portion both have a V-shaped structure.

[0011] Optionally, the second clamping portion is arranged on one side of the supporting groove close to the loading component, and in the connecting direction of adjacent supporting grooves, the distance between the top of the inclined groove corresponding to the second clamping portion and the top of the second clamping portion is less than 1 / 2 of the outer diameter of the heat exchange tube.

[0012] Optionally, a guiding slope is provided on the top of the second clamping portion.

[0013] Optionally, the second clamping portion is arranged on one side of the supporting groove close to the blanking component, and in the connecting direction of adjacent supporting grooves, the distance between the top of the inclined groove corresponding to the second clamping portion and the top of the second clamping portion is greater than 1 / 2 outer diameter of the heat exchange tube.

[0014] Optionally, the loading component and the unloading component are both material guide racks, and the top surface of the material guide rack has an inclined material guide surface.

[0015] Optionally, a stop block is provided at the end of each of the loading component and the unloading component.

[0016] Optionally, both sides of the loading component and both sides of the unloading component are provided with limiting components for limiting the positions of both ends of the heat exchange tube.

[0017] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0018] During loading, the top plate rises, and the chute close to the loading component lifts up a heat exchange tube on the loading component. Under the action of gravity, the heat exchange tube rolls into the bottom of the chute, and then the top plate (descends) resets. Without the support of the top plate, the heat exchange tube in the chute falls into the support groove close to the loading component. The top plate rises again, and the heat exchange tube in the support groove close to the loading component is lifted up by the next chute on the top plate. At the same time, another heat exchange tube on the loading component falls into the chute close to the loading component. After the top plate (descends) resets, the heat exchange tube in the support groove close to the loading component is transferred to the next support groove, and at the same time, the heat exchange tube in the chute close to the loading component falls into the support groove close to the loading component.

[0019] After that, each time the top material plate is lifted or lowered, a heat exchange tube on the loading component can be dropped into the supporting groove close to the loading component, and at the same time, the heat exchange tube in the previous supporting groove can be transferred to the next adjacent supporting groove, until each supporting groove has a heat exchange tube and the loading is completed; after the loading is completed, an airtightness test is performed, and after the test is completed, the top material plate is lifted, and the heat exchange tube in the supporting groove close to the unloading component is lifted up and rolled to the unloading component through the slope, at this time, a heat exchange tube on the loading component and other supporting grooves will also be lifted up, and after the top material plate (descends) is reset, the heat exchange tube that has completed the test is transferred to the next supporting groove, and at the same time, it is also loaded into the supporting groove close to the loading component, and this is repeated until all the heat exchange tubes that have completed the test are transferred to the unloading component, that is, the unloading is completed, and at the same time, the loading of another batch of heat exchange tubes is also completed; it can be seen that in the present invention, automatic loading and unloading can be completed by the lifting action of the top material plate, compared with the prior art, the loading and unloading actions are simplified, and the overall structure is also simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a heat exchange tube air tightness detection device for automatic loading and unloading provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the position relationship between the support plate, the ejector plate and the clamping plate;

[0022] Figure 3 This is a schematic diagram of a state in which a heat exchange tube is clamped and fixed by a first clamping part and a second clamping part in this embodiment;

[0023] Figure 4 It is a schematic diagram of a state in which a heat exchange tube is clamped and fixed by a first clamping part and a second clamping part in other embodiments;

[0024] Figure 5 It is a schematic diagram of the state where the heat exchange tubes are piled up on the loading component before loading;

[0025] Figure 6 This is a schematic diagram of the state after the top plate is raised for the first time during loading;

[0026] Figure 7 for Figure 6 Schematic diagram of the state after the middle ejector plate is reset;

[0027] Figure 8 for Figure 7 Schematic diagram of the state after the middle top plate rises again;

[0028] Fig. 9 for Figure 8 Schematic diagram of the state after the middle ejector plate is reset;

[0029] Fig.10 This is a schematic diagram of the state after loading is completed;

[0030] Fig.11 This is a schematic diagram of the state after the top plate is raised for the first time during unloading;

[0031] Figure markings: 1-loading component, 2-unloading component, 3-detection station, 301-support plate, 3011-support groove, 3012-second clamping part, 4-stop block, 5-top plate, 501-inclined groove, 502-slope, 6-clamping plate, 601-first clamping part, 7-heat exchange tube. DETAILED DESCRIPTION

[0032] refer to Figure 1 , an automatic loading and unloading heat exchange tube airtightness detection device, comprising a loading component 1, a detection station 3 and a unloading component 2 arranged in sequence. It is worth noting that the present invention mainly improves the loading and unloading parts, and the detection station 3 only improves the support method of the heat exchange tube 7, and the other general structures are not improved, that is, it can support and block the heat exchange tube 7, and the detection station 3 can be raised and lowered and has a water tank below. The detection method also adopts the existing method, that is, the heat exchange tube 7 is placed in the detection station 3, and the two ends are blocked by the blocking components. There is a water tank below the detection station 3. During the detection, the heat exchange tube 7 is pressurized by the blocking component, and the detection station 3 is immersed in the water tank as a whole until the pressure reaches the predetermined pressure and the pressure is stopped. The real-time air pressure in the heat exchange tube 7 is compared with the preset pressurization time to detect whether it is qualified.

[0033] The loading component 1 is used to transport the heat exchange tube 7 to the detection station 3, and the unloading component 2 is used to move the heat exchange tube 7 away from the detection station 3. As an option, in this embodiment, both the loading component 1 and the unloading component 2 are material guide racks, and the top surface of the material guide rack has an inclined material guide surface. It should be understood that the material guide surface of the loading component 1 is higher at the end away from the detection station 3 and lower at the end close to the detection station 3, and the material guide surface of the unloading component 2 is higher at the end close to the detection station 3 and lower at the end away from the detection station 3. In this way, the loading component 1 makes the heat exchange tube 7 approach the detection station 3 under the action of gravity, and the unloading component 2 makes the heat exchange tube 7 away from the detection station 3 under the action of gravity, without the need for power transportation. In other embodiments, the loading component 1 and the unloading component 2 can of course also be used in other ways, such as a conveyor.

[0034] As an option, both the loading component 1 and the unloading component 2 are composed of at least two material guide racks arranged in parallel. In actual applications, the number of material guide racks can be set according to the length of the heat exchange tube 7. The longer the heat exchange tube 7, the more material guide racks are arranged in parallel.

[0035] Furthermore, in this embodiment, both sides of the loading component 1 and both sides of the unloading component 2 are provided with limiting components (not shown in the figure) for limiting the positions of the two ends of the heat exchange tube 7. Specifically, the limiting components can be structures such as baffles to limit the axial displacement of the heat exchange tube 7 to prevent it from rolling off when rolling on the loading component 1 and the unloading component 2.

[0036] In this embodiment, a material stopper 4 is provided at the end of the loading component 1 and the unloading component 2, that is, a material stopper 4 is provided at one end of the loading component 1 close to the detection station 3 and at one end of the unloading component 2 away from the detection station 3. The function of the material stopper 4 is to limit the further rolling of the heat exchange tube 7 so that the heat exchange tube 7 can stay here.

[0037] In this embodiment, the support of the heat exchange tube 7 at the inspection station 3 is achieved by a fixed support plate 301. Specifically, the inspection station 3 is provided with at least two support plates 301, and the number of the support plates 301 can be increased according to the length of the heat exchange tube 7. The longer the heat exchange tube 7, the more support plates 301 there are. The support plates 301 are spaced apart with a number of support grooves 3011, and the number of the support grooves 3011 is determined according to the size of the inspection station 3. The larger the size, the more support grooves 3011 can be set, so that a larger number of heat exchange tubes 7 can be airtightly tested at one time.

[0038] refer to Figure 2 A lifting plate 5 capable of lifting and lowering is provided on one side of the support plate 301. As an option, the lifting and lowering of the lifting plate 5 is realized by a cylinder, that is, the lifting and lowering of the lifting plate 5 is realized by the extension and contraction of the cylinder. The lifting plate 5 is provided with inclined grooves 501 having the same number as the supporting grooves 3011 and a slope 502 close to the unloading component 2. Both the inclined grooves 501 and the slope 502 are gradually lowered in the direction close to the unloading component 2. As an option, the number of the supporting grooves 3011 in this embodiment is five, that is, the airtightness test of five heat exchange tubes 7 can be performed simultaneously each time. On this basis, the number of inclined grooves 501 is also five.

[0039] The present invention aims to realize the loading and unloading of the heat exchange tube 7 by lifting and lowering the ejector plate 5. On this basis, those skilled in the art should understand that when the ejector plate 5 is located below the support groove 3011, the inclined groove 501 close to the loading component 1 should be located below the rear end of the loading component 1 (i.e., the end close to the detection station 3), so that when the ejector plate 5 is lifted, a heat exchange tube 7 on the loading component 1 can be lifted, and at the same time, the slope 502 should be located below the unloading component 2, so that when it is lifted, the heat exchange tube 7 can roll onto the unloading component 2 along the slope 502; in addition, the bottom of the inclined groove 501 is directly below the top of the adjacent inclined groove 501 or directly below the top of the slope 502, and the straight line formed by the bottom of the previous inclined groove 501 and the next inclined groove 501 (or the top of the slope 502) should be located within the width of the support groove 3011, so that after the ejector plate 5 is lifted and reset, the heat exchange tube 7 can be transferred from the previous support groove 3011 to the next adjacent support.

[0040] The principle of loading and unloading is described in detail below. Before loading, the heat exchange tubes 7 are stacked at the stop block 4 of the loading component 1 (such as Figure 5 As shown, it should be understood that the rising height of the top plate 5 in the figure is for the convenience of understanding and is specially indicated, and does not represent the actual rising height. The same applies to other figures). When loading, the top plate 5 rises, and the inclined groove 501 close to the loading component 1 lifts a heat exchange tube 7 on the loading component 1. Under the action of gravity, the heat exchange tube 7 rolls into the bottom of the inclined groove 501 (as shown in FIG. Figure 6 As shown), the top plate 5 is then reset (descended), and without the support of the top plate 5, the heat exchange tube 7 in the chute 501 falls into the support groove 3011 near the loading component 1 (as shown in FIG. Figure 7 As shown in FIG. 1 , the top plate 5 rises again, and the heat exchange tube 7 in the support groove 3011 close to the feeding component 1 is lifted up by the next inclined groove 501 on the top plate 5, and at the same time, another heat exchange tube 7 on the feeding component 1 falls into the inclined groove 501 close to the feeding component 1 (as shown in FIG. 1 ). Figure 8 As shown), after the top plate 5 (descends) is reset, the heat exchange tube 7 in the support groove 3011 close to the loading component 1 is transferred to the next support groove 3011, and at the same time, the heat exchange tube 7 in the inclined groove 501 close to the loading component 1 falls into the support groove 3011 close to the loading component 1 (as shown). Fig. 9 shown).

[0041] After that, each time the lifting plate 5 is lifted, a heat exchange tube 7 on the loading component 1 can fall into the support groove 3011 close to the loading component 1, and at the same time, the heat exchange tube 7 in the previous support groove 3011 is transferred to the next adjacent support groove 3011, until each support groove 3011 has a heat exchange tube 7, and the loading is completed (such as Fig.10 After loading, perform airtight testing.

[0042] After the inspection is completed, the material is unloaded, the ejector plate 5 rises, and the heat exchange tube 7 in the support groove 3011 near the unloading part 2 is lifted up and rolls to the unloading part 2 through the slope 502. At this time, a heat exchange tube 7 on the loading part 1 and other heat exchange tubes in the support groove 3011 (such as Fig.11 As shown in the figure, after the top plate 5 (descends) is reset, the heat exchange tube 7 that has completed the inspection is transferred to the next support groove 3011, and is also loaded into the support groove 3011 close to the loading component 1, and this process is repeated until all the heat exchange tubes 7 that have completed the inspection are transferred to the unloading component 2, that is, the unloading is completed, and the loading of another batch of heat exchange tubes 7 is also completed; it can be seen that in the present invention, automatic loading and unloading can be completed by the lifting action of the top plate 5, compared with the prior art, the loading and unloading actions are simplified, and the overall structure is also simplified.

[0043] Reference again Figure 2 Preferably, in this embodiment, the other side of the support plate 301 is provided with a clamping plate 6 capable of translation. As an option, the translation of the clamping plate 6 is realized by a cylinder, that is, the translation of the clamping plate 6 is realized by the extension and contraction of the cylinder. The clamping plate 6 is provided with a first clamping portion 601 corresponding to each support groove 3011, and a second clamping portion 3012 is provided on one side of the support groove 3011. The translation of the clamping plate 6 can clamp and fix the heat exchange tube 7 between the first clamping portion 601 and the second clamping portion 3012. Such a configuration facilitates fixing the heat exchange tube 7 at the support position, and avoids damage (such as bending, deformation, etc.) to the heat exchange tube 7 when the subsequent plugging component plugs the two ends of the heat exchange tube 7.

[0044] Furthermore, the first clamping portion 601 and the second clamping portion 3012 are both V-shaped structures, and the two work together to enable the heat exchange tube 7 to move upward when clamped and contact the upper and lower sides of the V-shaped structure at the same time (such as Figure 3 As shown), it is convenient to better fix the heat exchange tube 7.

[0045] refer to Figure 3 In this embodiment, as an option, the second clamping part 3012 is arranged on one side of the support groove 3011 close to the loading part 1, and in the direction of the connection line of adjacent support grooves 3011, the distance H between the top of the chute 501 corresponding to the second clamping part 3012 and the top of the second clamping part 3012 is less than 1 / 2 of the outer diameter of the heat exchange tube 7, so that when the top material plate 5 is raised, the heat exchange tube 7 in the support groove 3011 can smoothly roll to the top of the chute 501 instead of falling back to the bottom of the previous chute 501. In this scheme, as an option, a guiding slope (not shown) is provided on the top of the second clamping part 3012, so that the heat exchange tube 7 can smoothly fall into the support groove 3011 after the top material plate 5 is reset (descended).

[0046] refer to Figure 4In other embodiments, the second clamping portion 3012 can of course also be arranged on the side of the support groove 3011 close to the unloading component 2, and in the direction of the connection line of adjacent support grooves 3011, the distance h between the top of the inclined groove 501 corresponding to the second clamping portion 3012 and the top of the second clamping portion 3012 is greater than 1 / 2 of the outer diameter of the heat exchange tube 7. The purpose is also to facilitate the heat exchange tube 7 in the support groove 3011 to roll smoothly to the top of the inclined groove 501 when the top plate 5 is raised, instead of falling back to the bottom of the previous inclined groove 501.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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. An automatic loading and unloading heat exchange tube airtightness detection device, characterized in that: The invention comprises a loading component, an inspection station and a unloading component which are arranged in sequence, wherein the loading component is used to transport the heat exchange tube to the inspection station, and the unloading component is used to keep the heat exchange tube away from the inspection station; the inspection station is provided with at least two support plates and a lifting plate which can be lifted and lowered is provided on one side of the support plate, a plurality of support grooves are arranged at intervals on the support plates, the lifting plate is provided with inclined grooves which are the same in number as the support grooves and a slope close to the unloading component, and both the inclined groove and the slope are gradually lowered in the direction close to the unloading component; After the top plate rises, a heat exchange tube on the loading component can roll into the bottom of the adjacent inclined groove. After the top plate is reset, the heat exchange tube can fall into the adjacent supporting groove. Thereafter, each time the top plate is lifted or lowered, a heat exchange tube on the loading component can be transferred to the adjacent supporting groove, and the heat exchange tube in the supporting groove can be transferred to the next adjacent supporting groove. After the inspection is completed, the heat exchange tube can be transferred to the unloading component in sequence in the same way.

2. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 1 is characterized in that: A clamping plate capable of translation is provided on the other side of the support plate, the clamping plate is provided with a first clamping portion corresponding to each support groove one by one, and a second clamping portion is provided on one side of the support groove. The heat exchange tube can be clamped and fixed between the first clamping portion and the second clamping portion by translation of the clamping plate.

3. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 2 is characterized in that: The lifting and lowering of the ejecting plate and the translation of the clamping plate are both achieved through cylinders.

4. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 2 is characterized in that: The first clamping portion and the second clamping portion both have a V-shaped structure.

5. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 4 is characterized in that: The second clamping part is arranged on one side of the supporting groove close to the loading component, and in the connecting direction of adjacent supporting grooves, the distance between the top of the inclined groove corresponding to the second clamping part and the top of the second clamping part is less than 1 / 2 of the outer diameter of the heat exchange tube.

6. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 5 is characterized in that: A guiding slope is provided on the top of the second clamping portion.

7. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 4 is characterized in that: The second clamping part is arranged on one side of the supporting groove close to the blanking component, and in the connecting direction of adjacent supporting grooves, the distance between the top of the inclined groove corresponding to the second clamping part and the top of the second clamping part is greater than 1 / 2 of the outer diameter of the heat exchange tube.

8. The automatic loading and unloading heat exchange tube airtightness detection device according to any one of claims 1 to 7, characterized in that: The loading component and the unloading component are both material guide racks, and the top surface of the material guide rack has an inclined material guide surface.

9. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 8 is characterized in that: The ends of the loading component and the unloading component are both provided with stop blocks.

10. The automatic loading and unloading heat exchange tube airtightness detection device according to claim 9, characterized in that: Limiting components are provided on both sides of the loading component and both sides of the unloading component, for limiting the positions of both ends of the heat exchange tube.

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