Batch airtightness detection table for pipe fittings

Abstract

The utility model relates to a pipe fitting batch air tightness detection bench comprising a pedestal, the top of the pedestal is provided with a first support frame, a second support frame and a plurality of first sealing plugs, and the first sealing plugs are uniformly distributed between the first support frame and the second support frame. A top plate and a limiting mechanism are connected between the first supporting frame and the second supporting frame from top to bottom, the limiting mechanism is used for limiting the side wall of the pipe fitting, the top plate is provided with air cylinders in one-to-one correspondence with the first sealing plugs, the output ends of the air cylinders are provided with second sealing plugs, and air inlet pipes are arranged at the tops of the first sealing plugs. Pressure sensors are arranged at the bottom of the second sealing plug; pressure gauges which are in one-to-one correspondence with the pressure sensors and are electrically connected with the pressure sensors are arranged on the side surface of the base; according to the utility model, batch detection of the airtightness of a plurality of pipe fittings can be realized at the same time, the detection efficiency is improved, the consumed time is short, the human resource investment is reduced, the detection cost is reduced, and the risk of human errors is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection of pipe fittings, in particular to a batch air tightness detection platform for pipe fittings. Background Art

[0002] Solid oxide fuel cells (SOFCs), a rising star in new energy technologies, demonstrate unparalleled potential in cutting-edge applications such as distributed power generation systems, combined heat and power solutions, and fuel cell vehicles, thanks to their exceptional energy efficiency and environmental friendliness. The airtightness of welded pipes, critical components in gas transmission, is crucial to the SOFC system's ability to prevent gas leaks, thereby preventing potential safety hazards and energy losses.

[0003] During the construction and maintenance of large-scale SOFC power stations, faced with hundreds or even thousands of welded pipes, the traditional method of airtightness testing—manual testing each one using separate testing instruments—is clearly unable to meet the requirements for efficient, rapid, and economical testing. This method is not only inefficient and time-consuming, but also requires a significant investment in human resources, increasing testing costs and the risk of human error. Utility Model Content

[0004] The purpose of the utility model is to design a batch air tightness testing platform for pipe fittings, so as to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A batch air tightness testing bench for pipe fittings includes a base, a first support frame, a second support frame and a first sealing plug are provided on the top of the base, several first sealing plugs are provided and are evenly distributed between the first support frame and the second support frame, a top plate and a limiting mechanism are respectively connected between the first support frame and the second support frame from top to bottom, the limiting mechanism is used to limit the side wall of the pipe fitting, the top plate is provided with a cylinder corresponding to the first sealing plug on a one-to-one basis, the output end of the cylinder is provided with a second sealing plug, the top of the first sealing plug is provided with an air inlet pipe, the bottom of the second sealing plug is provided with a pressure sensor, and the side of the base is provided with a pressure gauge corresponding to and electrically connected to the pressure sensor on a one-to-one basis.

[0007] Furthermore, the first support frame includes two first support rods, and the second support frame includes two second support rods. The two first support rods and the two second support rods are distributed in a rectangular shape on the top of the base. The first support rod and the second support rod are both provided with a convex sliding rail, and a first slider is slidably connected in the sliding rail. A first screw is provided on the first slider, and a vertical plate is provided on the side of the top plate. A first through hole for the first screw to pass through is provided on the vertical plate, and a first nut is threadedly connected to the first screw.

[0008] Furthermore, a first finger handle is provided on the side wall of the first nut.

[0009] Furthermore, the limiting mechanism includes two connecting plates arranged opposite to each other, a limiting plate corresponding to the first sealing plug is provided between the two connecting plates, and a limiting hole cooperating with the pipe fitting is provided on the limiting plate.

[0010] Furthermore, a second slider is slidably connected in the slide rail, a second screw is provided on the second slider, a horizontal plate is provided on the side of the connecting plate, a second through hole is provided on the horizontal plate for the second screw to pass through, and a second nut is threadedly connected to the second screw.

[0011] Furthermore, a second finger handle is provided on the side wall of the second nut.

[0012] Furthermore, the limiting plate includes a left half plate and a right half plate, the left half plate is fixedly connected to the side of one of the connecting plates, and the right half plate is fixedly connected to the side of the other connecting plate, the left half plate is provided with a first arc-shaped notch, and the right half plate is provided with a second arc-shaped notch, and the first arc-shaped notch and the second arc-shaped notch form a limiting hole.

[0013] Furthermore, an air duct is provided inside the base, one end of the air inlet pipe passes through the first sealing plug and is connected to one end of the air duct, and the other end of the air duct is connected to an air pump.

[0014] Furthermore, the first sealing plug is a frustum structure that is narrow at the top and wide at the bottom, and the second sealing plug is a frustum structure that is wide at the top and narrow at the bottom. Both the first sealing plug and the second sealing plug are silicone plugs.

[0015] Furthermore, a controller is provided inside the base, a display screen is provided on the side of the base, and the pressure sensor and the display screen are both electrically connected to the controller.

[0016] The beneficial effects of the utility model are:

[0017] A first sealing plug and a second sealing plug are set to seal the two ends of the pipe respectively, and gas of a certain pressure is filled into the pipe through the air inlet pipe. The pressure sensor will display the air pressure detected inside the pipe through the pressure gauge. By observing the data changes on the pressure gauge, it is judged whether the air tightness of the pipe is qualified. There are several first sealing plugs, and the second sealing plugs are set one by one corresponding to the first sealing plugs. It can realize batch testing of the air tightness of multiple pipes at the same time, improve detection efficiency, shorten time, reduce human resource investment, reduce detection costs, and reduce the risk of human error. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the relationship between the limiting mechanism and the first support frame and the second support frame in the present invention;

[0021] Figure 3 This is a schematic diagram of the structural relationship between the connecting plate and the slide rail in the present invention;

[0022] Figure 4 This is a structural diagram of the connection between the top plate and the slide rail in the utility model.

[0023] The names of the components marked in the figure are as follows:

[0024] 1. Base; 2. First sealing plug; 3. Top plate; 4. Cylinder; 5. Second sealing plug; 6. Pressure gauge; 7. First support rod; 8. Second support rod; 9. Slide rail; 10. First slider; 11. First screw; 12. Vertical plate; 13. First through hole; 14. First nut; 15. First handle; 16. Connecting plate; 17. Second slider; 18. Second screw; 19. Horizontal plate; 20. Second through hole; 21. Second nut; 22. Second handle; 23. Left half plate; 24. Right half plate; 25. Inlet pipe; 26. Pipe fitting; 27. Display screen. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0026] like Figure 1-4 As shown, a batch air tightness testing platform for pipe fittings includes a base 1, a first support frame, a second support frame and a first sealing plug 2 are provided on the top of the base 1, the first sealing plug 2 is provided with several and evenly distributed between the first support frame and the second support frame, a top plate 3 and a limiting mechanism are respectively connected between the first support frame and the second support frame from top to bottom, the limiting mechanism is used to limit the side wall of the pipe fitting 26, the top plate 3 is provided with a cylinder 4 corresponding to the first sealing plug 2 one by one, and the output end of the cylinder 4 is provided with a second sealing plug 5, one end opening of the pipe fitting 26 to be tested is matched with the first sealing plug 2, and then the side wall of the pipe fitting 26 is limited by the limiting mechanism to prevent the pipe fitting 26 from loosening, and finally the cylinder 4 drives the second sealing plug 5 to descend, so that the second sealing plug 5 is inserted into the other end opening of the pipe fitting 26, thereby sealing the two ends of the pipe fitting 26, and the first sealing plug 2 is provided with multiple, which can be conveniently The air tightness of multiple pipe fittings 26 is tested in batches; an air inlet pipe 25 is fixedly connected to the top of the first sealing plug 2, and gas enters the interior of the pipe fitting 26 through the air inlet pipe 25; a pressure sensor is provided at the bottom of the second sealing plug 5 for detecting the air pressure inside the pipe fitting 26; a pressure gauge 6 is provided on the side of the base 1, which corresponds to and is electrically connected to the pressure sensor, and the pressure sensor will display the detected air pressure through the pressure gauge 6; a controller is provided inside the base 1, and a display screen 27 is provided on the side of the base 1. The pressure sensor and the display screen 27 are both electrically connected to the controller, which belongs to the existing technology. The pressure sensor will transmit the detected air pressure data to the controller, and the controller will then display the processed data through the display screen 27. The display screen 27 will show a curve chart of the air pressure change over time, and accurately judge whether the air tightness of the pipe fitting 26 is qualified based on the preset evaluation criteria;

[0027] The first support frame includes two first support rods 7, and the second support frame includes two second support rods 8. The two first support rods 7 and the two second support rods 8 are distributed in a rectangular shape on the top of the base 1. The first support rod 7 and the second support rod 8 are both provided with a slide rail 9 of a convex structure. A first slider 10 is slidably connected in the slide rail 9, and a first screw rod 11 is provided on the first slider 10. A vertical plate 12 is provided on the side of the top plate 3, and a first through hole 13 for the first screw rod 11 to pass through is provided on the vertical plate 12. A first nut 14 is threadedly connected to the first screw rod 11. By adjusting the first slider 10 to slide, the height of the top plate 3 can be adjusted, which is suitable for sealing both ends of pipe fittings 26 of different lengths and sizes. It has good applicability. After tightening the first nut 14, the first slider 10 can be locked in the slide rail 9 to fix the top plate 3; a first finger handle 15 is provided on the side wall of the first nut 14 to facilitate screwing the first nut 14;

[0028] The limiting mechanism includes two relatively arranged connecting plates 16, and a limiting plate corresponding to the first sealing plug 2 is provided between the two connecting plates 16. The limiting plate includes a left half plate 23 and a right half plate 24. The left half plate 23 is fixedly connected to the side of one of the connecting plates 16, and the right half plate 24 is fixedly connected to the side of the other connecting plate 16. A first arc-shaped notch is provided on the left half plate 23, and a second arc-shaped notch is provided on the right half plate 24. The first arc-shaped notch and the second arc-shaped notch form a limiting hole that cooperates with the pipe fitting 26. The side wall of the pipe fitting 26 is limited by the limiting hole to prevent the pipe fitting 26 from loosening and affecting the sealing effect of the first sealing plug 2 or the second sealing plug 5 on the pipe fitting 26. A second slider 17 is slidably connected in the slide rail 9, and a second screw 18 is provided on the second slider 17. A transverse plate 19 is provided on the side of the connecting plate 16, and a second through hole 20 for the second screw 18 to pass through is provided on the transverse plate 19. A second nut 21 is threadedly connected to the second screw 18. By adjusting the second slider 17 to slide, the height of the connecting plate 16 can be adjusted, which is suitable for limiting pipe fittings 26 of different lengths and sizes. It has good applicability. After tightening the second nut 21, the second slider 17 can be locked in the slide rail 9, thereby fixing the connecting plate 16; a second finger handle 22 is provided on the side wall of the second nut 21 to facilitate twisting the second nut 21;

[0029] An electromagnetic valve is provided at the air inlet pipe 25, and an air duct is provided inside the base 1. One end of the air inlet pipe 25 passes through the first sealing plug 2 and is connected to one end of the air duct. The other end of the air duct is connected to an air pump. When the electromagnetic valve is opened, the air pump can discharge the gas from the air duct into the air inlet pipe 25; the first sealing plug 2 is a frustum structure that is narrow at the top and wide at the bottom, and the second sealing plug 5 is a frustum structure that is wide at the top and narrow at the bottom, which can be used to seal the two ends of pipes 26 with different inner diameters and has good applicability; the first sealing plug 2 and the second sealing plug 5 are both silicone plugs.

[0030] Working principle:

[0031] like Figure 1-4 As shown, when the testing platform is in use, the height of the top plate 3 is first adjusted to a suitable height according to the length of the pipe 26, and then the connecting plate 16 is adjusted to be lowered to a suitable height. Then, one end opening of the pipe 26 to be tested is passed downward through the limiting hole and docked with the first sealing plug 2. After the pipe 26 is docked, the connecting plate 16 is adjusted to rise to a suitable height, so as to better limit the side wall of the pipe 26 and prevent the pipe 26 from loosening. Finally, the cylinder 4 is controlled to drive the second sealing plug 5 to descend so that the second sealing plug 5 is inserted into the other end opening of the pipe 26. After both ends of the pipe 26 are sealed, gas is started to be filled into the pipe 26.

[0032] One method of filling the pipe 26 with gas is to open the electromagnetic valve of the air inlet pipe 25, and the air pump discharges the gas from the air guide pipe into the air inlet pipe 25, and the gas is then discharged from the air inlet pipe 25 into the pipe 26. After the air pump adds gas to the pipe 26 at a certain pressure, the electromagnetic valve and the air pump are closed, and the pressure sensor displays the detected air pressure through the pressure gauge 6. Then, the value change of the pressure gauge 6 is observed. If the value of the pressure gauge 6 continues to decrease, the sealing of the pipe 26 is unqualified. If the value of the pressure gauge 6 remains stable, the sealing of the pipe 26 is qualified.

[0033] Another way to fill gas into the pipe 26 is to open the electromagnetic valve of the air inlet pipe 25, and the air pump discharges the gas from the air duct into the air inlet pipe 25, and the gas is then discharged from the air inlet pipe 25 into the pipe 26. During this period, gas is continuously filled into the pipe 26, and the pressure sensor will transmit the detected air pressure data to the controller, and the controller will then display the processed data through the display screen 27. The display screen 27 will show a curve graph of the air pressure changing with time, and based on the preset evaluation criteria, it will accurately judge whether the air tightness of the pipe 26 is qualified. After the inspection is completed, the electromagnetic valve and the air pump are closed.

[0034] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A batch air tightness test bench for pipe fittings, comprising a base (1), characterized in that: The top of the base (1) is provided with a first support frame, a second support frame and a first sealing plug (2); the first sealing plug (2) is provided with a plurality of support frames evenly distributed between the first support frame and the second support frame; a top plate (3) and a limiting mechanism are respectively connected between the first support frame and the second support frame from top to bottom; the limiting mechanism is used to limit the side wall of the pipe (26); the top plate (3) is provided with a cylinder (4) corresponding to the first sealing plug (2); the output end of the cylinder (4) is provided with a second sealing plug (5); the top of the first sealing plug (2) is provided with an air inlet pipe (25); the bottom of the second sealing plug (5) is provided with a pressure sensor; and the side of the base (1) is provided with a pressure gauge (6) corresponding to the pressure sensor and electrically connected.

2. The batch air tightness testing platform for pipe fittings according to claim 1, characterized in that: The first support frame comprises two first support rods (7), and the second support frame comprises two second support rods (8). The two first support rods (7) and the two second support rods (8) are distributed on the top of the base (1) in a rectangular shape. The first support rod (7) and the second support rod (8) are both provided with a convex slide rail (9). A first slider (10) is slidably connected in the slide rail (9). The first slider (10) is provided with a first screw rod (11). A vertical plate (12) is provided on the side of the top plate (3). The vertical plate (12) is provided with a first through hole (13) for the first screw rod (11) to pass through. The first screw rod (11) is threadedly connected with a first nut (14).

3. The batch air tightness testing station for pipe fittings according to claim 2, characterized in that: A first finger handle (15) is provided on the side wall of the first nut (14).

4. The batch air tightness testing station for pipe fittings according to claim 2, characterized in that: The limiting mechanism comprises two connecting plates (16) arranged opposite to each other, a limiting plate corresponding to the first sealing plug (2) is provided between the two connecting plates (16), and a limiting hole matched with the pipe (26) is provided on the limiting plate.

5. The batch air tightness testing station for pipe fittings according to claim 4, characterized in that: A second slider (17) is slidably connected in the slide rail (9), and a second screw rod (18) is provided on the second slider (17). A transverse plate (19) is provided on the side of the connecting plate (16), and a second through hole (20) for the second screw rod (18) to pass through is provided on the transverse plate (19). A second nut (21) is threadedly connected to the second screw rod (18).

6. The batch air tightness testing station for pipe fittings according to claim 5, characterized in that: A second finger handle (22) is provided on the side wall of the second nut (21).

7. The batch air tightness testing station for pipe fittings according to claim 4, characterized in that: The limiting plate comprises a left half plate (23) and a right half plate (24), wherein the left half plate (23) is fixedly connected to the side surface of one of the connecting plates (16), and the right half plate (24) is fixedly connected to the side surface of the other connecting plate (16), a first arc-shaped notch is provided on the left half plate (23), and a second arc-shaped notch is provided on the right half plate (24), and the first arc-shaped notch and the second arc-shaped notch form a limiting hole.

8. The batch air tightness testing station for pipe fittings according to claim 1, characterized in that: An air duct is provided inside the base (1); one end of the air inlet pipe (25) passes through the first sealing plug (2) and is connected to one end of the air duct; the other end of the air duct is connected to an air pump.

9. The batch air tightness testing station for pipe fittings according to claim 1, characterized in that: The first sealing plug (2) is a frustum structure that is narrow at the top and wide at the bottom, and the second sealing plug (5) is a frustum structure that is wide at the top and narrow at the bottom. Both the first sealing plug (2) and the second sealing plug (5) are silicone plugs.

10. The batch air tightness testing station for pipe fittings according to claim 1, characterized in that: A controller is provided inside the base (1), a display screen (27) is provided on the side of the base (1), and the pressure sensor and the display screen (27) are both electrically connected to the controller.

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