Portable pipe fitting air tightness detection device with telescopic structure

Abstract

The utility model provides a portable pipe fitting air tightness detection device with a telescopic structure, which is provided with an outer side support assembly and an inner side support assembly, the inner side support assembly is rotatably connected with the outer side support assembly, and the outer side support assembly comprises an outer side support adjusting section, an outer side support fixing section and an outer side support base. The outer side support assembly comprises an outer side support adjusting section and an outer side support fixing section, the outer side support adjusting section and the outer side support fixing section are connected in an up-down sliding mode, the outer side support fixing section and the outer side support base are fixedly connected, the inner side support assembly comprises an inner side support adjusting section and an inner side support fixing section, and the inner side support adjusting section and the inner side support fixing section are connected in an up-down sliding mode. The detection device can realize rapid sealing and locking of the detected pipe fitting, can adjust the proper accommodating height according to the length of the pipe fitting, is suitable for detection of pipe fittings with different lengths, and is wide in application range and small in limitation. The air tightness detection device can be widely applied to key air tightness detection.

Description

Technical Field

[0001] This utility model relates to a testing device, and more particularly to a convenient pipe fitting airtightness testing device with a telescopic structure. Background Technology

[0002] Straight pipes and tees are commonly used connecting pipes in the assembly of Roots blowers, and are usually made by welding flanges and seamless steel pipes.

[0003] Roots blowers have strict standards for the sealing of connecting pipe fittings during gas transportation, and leakage is not allowed, especially for the transportation of special gases, such as toxic gases, flammable and explosive gases. Therefore, connecting pipe fittings must undergo airtightness pressure testing before leaving the factory to check for leaks at the welds and the steel pipe itself. Currently, the conventional testing method is to connect and seal the flanges of straight pipes and tees with sealing gaskets and blind flange bolts. However, since straight pipes have two flanges, each flange requires multiple bolts to tighten, and tees have three flanges, each flange also requires multiple bolts to tighten, the operation is complicated, cumbersome, and inefficient.

[0004] Furthermore, during the inspection process, soapy water must be applied to each weld seam, and the presence of air leaks can be determined by observing whether bubbles are generated. However, in order to conduct a comprehensive inspection of the pipe fittings, the pipe fittings need to be manually flipped during the inspection process, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0005] This utility model addresses the above-mentioned technical problems by providing a convenient pipe fitting airtightness testing device with a telescopic structure. During the testing process, this device can quickly seal and lock the tested pipe fitting, offering simple and quick operation with high efficiency. Furthermore, the device features a flipping structure, allowing for easy flipping of the tested pipe fitting during testing, saving time and effort and significantly improving efficiency. Additionally, the device can be adjusted according to the length of the pipe fitting, making it suitable for testing pipe fittings of different lengths, thus having a wide range of applications and few limitations.

[0006] Therefore, the technical solution of this utility model is a convenient pipe fitting air tightness testing device with a telescopic structure, which is provided with an outer support assembly and an inner support assembly, the inner support assembly being located inside the outer support assembly, and the inner support assembly and the outer support assembly being rotatably connected.

[0007] The outer support assembly includes an outer support adjustment section located at the upper section, an outer support fixing section located at the middle section, and an outer support base located at the lower section. The outer support adjustment section is U-shaped, and the outer support adjustment section and the outer support fixing section are slidably connected vertically. The outer support fixing section and the outer support base are fixedly connected.

[0008] The inner support assembly includes an inner support adjustment section located at the upper section and an inner support fixing section located at the lower section. Both the inner support adjustment section and the inner support fixing section are U-shaped and are slidably connected vertically.

[0009] The inner bottom of the fixed section of the inner bracket is provided with a bottom sealing plate. The bottom sealing plate is composed of a bottom sealing plate support section located in the lower section and a bottom sealing plate sealing section located in the upper section. The bottom sealing plate support section is fixedly connected to the inner bottom of the fixed section of the inner bracket. The upper end of the bottom sealing plate sealing section can be used to place the test tube. After the test tube is placed, a support assembly and a top sealing plate are respectively provided between the test tube and the inner top of the adjusting section of the inner bracket. The top sealing plate is composed of a top sealing plate support section located in the upper section and a top sealing plate sealing section located in the lower section. The lower end of the top sealing plate sealing section contacts the upper end of the test tube, the upper end of the top sealing plate support section contacts the lower end of the support assembly, and the top of the support assembly contacts the inner top of the adjusting section of the inner bracket.

[0010] The support assembly can extend and retract vertically. When the support assembly opens downwards, it continuously presses against the top sealing plate under the support of the inner bracket adjustment section. Finally, the sealing sections of the top and bottom sealing plates seal and lock the two ends of the test tube.

[0011] The top sealing plate has a through hole running vertically through it, which communicates with the inner cavity of the test tube.

[0012] Preferably, the support component is a jack.

[0013] Preferably, the outer support fixing section and the inner support fixing section are connected by bolts to achieve rotation of the inner support assembly inside the outer support assembly.

[0014] Preferably, the outer bracket fixing section has an upward through-hole located at the upper end of the bolt, the lower part of the outer bracket adjusting section is located inside the through-hole and is slidably connected to the through-hole, the outer bracket fixing section has a through-hole located at the through-hole, and the outer bracket adjusting section has multiple vertically arranged fixing holes near the lower end, the outer bracket adjusting section and the outer bracket fixing section are connected by bolts passing through the fixing holes on both the outer bracket fixing section and the outer bracket adjusting section to achieve vertical adjustment of the outer bracket fixing section and mutual locking and fixing;

[0015] The inner support fixing section has an upward through-hole located at the upper end of the bolt. The lower part of the inner support adjusting section is located inside the through-hole and is slidably connected to the through-hole. The inner support fixing section has a through-hole located at the position of the through-hole. The inner support adjusting section has multiple vertically arranged fixing holes near the lower end. The inner support adjusting section and the inner support fixing section are connected by bolts passing through the fixing holes on both sections to achieve vertical adjustment and mutual locking.

[0016] Preferably, the fixing holes on the outer support adjustment section and the outer support fixing section are through holes that extend in the front-to-back direction.

[0017] Preferably, a handle is provided at the outer top end of the outer support adjustment section.

[0018] Preferably, the bottom sealing seat plate support section and the inner bottom position of the inner bracket fixing section are locked and fixed by bolts.

[0019] Preferably, a pipeline is fixedly installed on the outer port of the through hole on the top sealing plate, and a pressure gauge and a valve are fixedly installed on the pipeline from the inside to the outside.

[0020] Preferably, reinforcing plates are fixedly provided at the two bending positions inside the outer support adjustment section;

[0021] Reinforcing plates are fixed to the two sides of the inner bending position of the outer bracket fixing section.

[0022] The beneficial effects of this utility model are:

[0023] 1. Because the outer support adjustment section and the outer support fixing section, as well as the inner support adjustment section and the inner support fixing section, are all connected by vertical sliding connections, forming a telescopic structure, the internal height of the outer support assembly and the inner support assembly can be adjusted separately. In use, according to the actual height of the test pipe, the outer support adjustment section and the inner support adjustment section are moved vertically to adjust the internal height of the outer support assembly and the inner support assembly to the appropriate size. Then, bolts are passed through the corresponding height fixing holes on the outer support fixing section and the outer support adjustment section, as well as the corresponding height fixing holes on the inner support fixing section and the inner support adjustment section, to complete the telescopic adjustment of the internal height of the outer support assembly and the inner support assembly. The adjustment process is simple and quick, meets the requirements of portability, is not limited by power supply, and can achieve rapid adjustment for test pipes of different heights, resulting in high work efficiency.

[0024] 2. Since the bottom sealing plate support section and the inner bracket fixing section are locked together by bolts, when it is necessary to test test pipes of different diameters, the bottom sealing plate of different diameters can be quickly replaced for testing simply by removing the bolts. The operation is simple and quick, and it is applicable to the testing of test pipes of different diameters, with a wide range of applications. Attached Figure Description

[0025] Figure 1 This is the front view of this utility model;

[0026] Figure 2 This is the left view of this utility model;

[0027] Figure 3 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0028] Figure 4 This is a utility model Figure 1 Enlarged view of section B in the middle.

[0029] Explanation of symbols in the diagram:

[0030] 1. Outer support assembly; 101. Outer support adjustment section; 102. Outer support fixing section; 103. Outer support base; 2. Inner support assembly; 201. Inner support adjustment section; 202. Inner support fixing section; 3. Support assembly; 4. Handle; 5. Bolt; 6. Top sealing seat plate; 601. Top sealing seat plate support section; 602. Top sealing seat plate sealing section; 7. Bottom sealing seat plate; 701. Bottom sealing seat plate support section; 702. Bottom sealing seat plate sealing section; 8. Reinforcing plate; 9. Test fitting; 10. Fixing hole; 11. Pipeline; 12. Pressure gauge; 13. Valve; 14. Through hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the embodiments.

[0032] pass Figures 1-4 It can be seen that the portable pipe fitting air tightness testing device with telescopic structure is provided with an outer support assembly 1 and an inner support assembly 2. The inner support assembly 2 is located inside the outer support assembly 1, and the inner support assembly 2 and the outer support assembly 1 are rotatably connected.

[0033] The outer support assembly 1 includes an outer support adjustment section 101 located at the upper section, an outer support fixing section 102 located at the middle section, and an outer support base 103 located at the lower section. The outer support adjustment section 101 is U-shaped and is slidably connected to the outer support fixing section 102 to form a telescopic structure, which can adjust the internal height of the outer support assembly 1. The outer support fixing section 102 is fixedly connected to the outer support base 103, and the outer support base 103 serves as a support.

[0034] The inner support assembly 2 includes an inner support adjustment section 201 located in the upper section and an inner support fixing section 202 located in the lower section. Both the inner support adjustment section 201 and the inner support fixing section 202 are U-shaped. The inner support adjustment section 201 and the inner support fixing section 202 are slidably connected to each other to form a telescopic structure, which can adjust the internal accommodating height of the inner support assembly 2.

[0035] A bottom sealing plate 7 is provided at the bottom of the inner support fixing section 202. The bottom sealing plate 7 consists of a bottom sealing plate support section 701 located in the lower section and a bottom sealing plate sealing section 702 located in the upper section. The bottom sealing plate support section 701 is fixedly connected to the bottom of the inner support fixing section 202. The upper end surface of the bottom sealing plate sealing section 702 can be used to place the test tube 9. After the test tube 9 is placed, a support assembly 3 and a top sealing plate 6 are respectively provided between the test tube 9 and the top of the inner support adjusting section 201. Plate 6 consists of a top sealing seat plate support section 601 located in the upper section and a top sealing seat plate sealing section 602 located in the lower section. The lower end face of the top sealing seat plate sealing section 602 contacts the upper end face of the test tube 9, the upper end face of the top sealing seat plate support section 601 contacts the lower end face of the support assembly 3, and the top of the support assembly 3 contacts the inner top position of the inner bracket adjustment section 201. The top sealing seat plate sealing section 602 and the bottom sealing seat plate sealing section 702 can be made of elastic sealing materials, such as rubber (e.g., butyl, silicone, fluororubber) and polyurethane.

[0036] The support component 3 can extend and retract vertically. When the support component 3 opens downward, it continuously presses the top sealing plate 6 under the support of the inner bracket adjustment section 201. Finally, the top sealing plate sealing section 602 and the bottom sealing plate sealing section 702 seal and lock the two ends of the test tube 9.

[0037] The top sealing plate 6 is provided with a through hole 14 that runs vertically through the top and bottom. The through hole 14 is connected to the inner cavity of the test tube 9. Through the through hole 14, the inside of the test tube 9 can be punched, and the airtightness test of the test tube 9 can be carried out after punching.

[0038] In one specific embodiment, the support component 3 is a jack. Since the jack has relatively stable performance output and reliable structural characteristics, it can ensure the reliability of the detection work and improve the detection efficiency.

[0039] In one specific embodiment, the outer bracket fixing section 102 and the inner bracket fixing section 202 are rotatably connected by bolts 5, so that the inner bracket assembly 2 can rotate inside the outer bracket assembly 1. The rotatable connection using bolts 5 is a purely mechanical connection, which has good structural stability, simple and quick operation, high testing efficiency, and is easy to carry. It is not limited by power supply, which meets the needs of convenience. At the same time, the maintenance cost is low. When a fault occurs during use, there is no need for a cumbersome inspection process, which meets the purpose of convenient and quick inspection.

[0040] In one specific embodiment, the outer bracket fixing section 102 has an upward through-hole located at the upper end of the bolt 5. The lower part of the outer bracket adjusting section 101 is located inside the through-hole and is slidably connected to the through-hole. The outer bracket fixing section 102 has a through-hole fixing hole 10 located at the position of the through-hole. The outer bracket adjusting section 101 has a plurality of vertically arranged fixing holes 10 near the lower end. The outer bracket adjusting section 101 and the outer bracket fixing section 102 are connected by the bolt 5 passing through the fixing holes 10 on both the outer bracket fixing section 102 and the outer bracket adjusting section 101 to achieve vertical position adjustment and mutual locking fixation between the outer bracket fixing section 102 and the outer bracket adjusting section 101.

[0041] The inner bracket fixing section 202 has an upward through-hole located above the bolt 5. The lower part of the inner bracket adjusting section 201 is located inside the through-hole and is slidably connected to the through-hole. The inner bracket fixing section 202 has a through-hole fixing hole 10 located at the position of the through-hole. The inner bracket adjusting section 201 has multiple vertically arranged fixing holes 10 near its lower end. The inner bracket adjusting section 201 and the inner bracket fixing section 202 are connected by bolt 5 passing through the fixing holes 10 on both the inner bracket fixing section 202 and the inner bracket adjusting section 201 to achieve vertical adjustment and mutual locking.

[0042] In use, according to the actual height of the test pipe 9, the outer support adjustment section 101 and the inner support adjustment section 201 are moved up and down respectively to adjust the internal height of the outer support assembly 1 and the inner support assembly 2 to a suitable size. Then, by passing the bolts 5 through the corresponding height fixing holes 10 on the outer support fixing section 102 and the outer support adjustment section 101, as well as the corresponding height fixing holes 10 on the inner support fixing section 202 and the inner support adjustment section 201, the internal height of the outer support assembly 1 and the inner support assembly 2 can be adjusted. The adjustment process is simple and quick, meets the portability requirements, is not limited by power supply, and can achieve rapid adjustment for test pipes 9 of different heights, resulting in high work efficiency.

[0043] In a specific embodiment, the fixing holes 10 on the outer bracket adjustment section 101 and the outer bracket fixing section 102 are both through holes that extend in the front-back direction. This direction can avoid interference during operation. If the fixing hole 10 is set as a through hole that extends in the left and right, during the insertion of the bolt 5, operational interference may easily occur between the outer bracket assembly 1 and the inner bracket assembly 2. Furthermore, the gap between the outer bracket assembly 1 and the inner bracket assembly 2 may easily cause pressure on the hand.

[0044] In one specific embodiment, a handle 4 is provided at the outer top of the outer support adjustment section 101 to facilitate carrying and turnover, thus meeting the portability requirements.

[0045] In one specific embodiment, the bottom sealing seat plate support section 701 and the inner bottom position of the inner bracket fixing section 202 are locked and fixed by bolts 5. When it is necessary to test test pipes 9 of different diameters, the bottom sealing seat plate 7 of different diameters can be quickly replaced by simply removing the bolts 5. The operation process is simple and quick, and it can be applied to the testing of test pipes 9 of different diameters, with a wide range of applications.

[0046] In one specific embodiment, a pipe 11 is fixedly installed on the outer port of the through hole 14 on the top sealing plate 6. A pressure gauge 12 and a valve 13 are fixedly installed on the pipe 11 from the inside to the outside. In use, the valve 13 is opened, and air is injected into the test tube 9 through the pipe 11. When the pressure gauge 12 shows that the set pressure value has been reached, the valve 13 is closed. Then, soapy water is applied to the sealing points of the two ends of the test tube 9 with the top sealing plate 6 and the bottom sealing plate 7, as well as the weld of the tube. Observe whether bubbles are generated. If bubbles are generated at the sealing points of the two ends of the test tube 9 with the top sealing plate 6 and the bottom sealing plate 7, it indicates that the seal is in place. The test tube 9 needs to be pressed and sealed again with a jack. After the seal is in place, the weld of the tube is observed from all directions by swinging the inner support assembly 2. If bubbles appear in a certain place, it indicates that there is a leak at that location. If no bubbles are generated, the next test tube 9 is replaced and the test continues.

[0047] In one specific embodiment, reinforcing plates 8 are fixedly provided at the two bending positions inside the outer support adjustment section 101, and reinforcing plates 8 are fixedly provided at the two bending positions inside the outer support fixing section 102. By providing reinforcing plates 8, the structural rigidity of the outer support assembly 1 and the inner support assembly 2 can be increased, avoiding deformation or even breakage during long-term use.

[0048] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A portable pipe fitting airtightness testing device with a telescopic structure, characterized in that: The device includes an outer support assembly and an inner support assembly, wherein the inner support assembly is located inside the outer support assembly and is rotatably connected to the outer support assembly. The outer support assembly includes an outer support adjustment section located at the upper section, an outer support fixing section located at the middle section, and an outer support base located at the lower section. The outer support adjustment section is U-shaped, and the outer support adjustment section and the outer support fixing section are slidably connected vertically. The outer support fixing section and the outer support base are fixedly connected. The inner support assembly includes an inner support adjustment section located at the upper section and an inner support fixing section located at the lower section. Both the inner support adjustment section and the inner support fixing section are U-shaped, and the inner support adjustment section and the inner support fixing section are slidably connected vertically. The inner bottom of the fixed section of the inner bracket is provided with a bottom sealing plate. The bottom sealing plate is composed of a bottom sealing plate support section located in the lower section and a bottom sealing plate sealing section located in the upper section. The bottom sealing plate support section is fixedly connected to the inner bottom of the fixed section of the inner bracket. The upper end face of the bottom sealing plate sealing section can be used to place the test tube. After the test tube is placed, a support assembly and a top sealing plate are respectively provided between the test tube and the inner top of the adjusting section of the inner bracket. The top sealing plate is composed of a top sealing plate support section located in the upper section and a top sealing plate sealing section located in the lower section. The lower end face of the top sealing plate sealing section contacts the upper end face of the test tube. The upper end face of the top sealing plate support section contacts the lower end face of the support assembly. The top of the support assembly contacts the inner top of the adjusting section of the inner bracket. The support assembly can extend and retract vertically. When the support assembly opens downwards, it continuously presses the top sealing plate under the support of the inner bracket adjustment section. Finally, the top sealing plate sealing section and the bottom sealing plate sealing section seal and lock the two ends of the test tube. The top sealing plate is provided with a through hole running vertically through the top and bottom, and the through hole communicates with the inner cavity of the test tube.

2. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: The support component is a jack.

3. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: The outer support fixing section and the inner support fixing section are connected by bolts, so that the inner support assembly can rotate inside the outer support assembly.

4. The portable pipe fitting airtightness testing device with telescopic structure according to claim 3, characterized in that: The outer bracket fixing section has an upward through-hole located at the upper end of the bolt. The lower part of the outer bracket adjusting section is located inside the through-hole and is slidably connected to the through-hole. The outer bracket fixing section has a through-hole located at the through-hole. The outer bracket adjusting section has multiple vertically arranged fixing holes near the lower end. The outer bracket adjusting section and the outer bracket fixing section are connected by bolts passing through the fixing holes on both the outer bracket fixing section and the outer bracket adjusting section to achieve vertical adjustment and mutual locking. The inner support fixing section has an upward through-hole located at the upper end of the bolt. The lower part of the inner support adjusting section is located inside the through-hole and is slidably connected to the through-hole. The inner support fixing section has a through-hole located at the through-hole. The inner support adjusting section has multiple vertically arranged fixing holes near its lower end. The inner support adjusting section and the inner support fixing section are connected by bolts passing through the fixing holes on both sections to achieve vertical position adjustment and mutual locking.

5. The portable pipe fitting airtightness testing device with telescopic structure according to claim 4, characterized in that: The fixing holes on the outer support adjustment section and the outer support fixing section are both through holes that extend in the front-to-back direction.

6. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: The bottom sealing seat plate support section and the inner bracket fixing section are locked and fixed at their inner bottom ends by bolts.

7. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: A pipe is fixedly installed on the outer port of the through hole on the top sealing plate, and a pressure gauge and a valve are fixedly installed on the pipe from the inside to the outside.

8. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: Reinforcing plates are fixedly installed at the two bending positions inside the outer support adjustment section; Reinforcing plates are fixedly installed at the two bending positions inside the outer bracket fixing section.

9. The portable pipe fitting airtightness testing device with telescopic structure according to claim 1, characterized in that: A handle is provided at the top outer end of the outer support adjustment section.

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