Pipeline air tightness detection device

Abstract

The utility model provides a pipeline air tightness detection device which comprises an installation platform, an installation frame, a sealing assembly and an air pressure monitoring assembly are arranged on the installation platform, the air pressure monitoring assembly comprises an air pump, an air delivery pipe set, a pressure sensor and a buzzer alarm, and the air delivery pipe set is communicated with the air pump, the sealing assembly and the pressure sensor. A pool is further arranged at the bottom of the installation platform, a first air cylinder driving the installation platform to move up and down is arranged at the side end of the pool, an air inlet and an air outlet of a pipeline are blocked through a sealing assembly, sealing of the pipeline is achieved, ventilation is conducted on the pipeline through an air pressure detection assembly, and the pipeline sinks into the pool through the first air cylinder to detect the air tightness of the pipeline. The pressure sensor and the air pump are connected through the air conveying pipe set, and when the pressure sensor does not detect the pressure or the pressure value does not accord with the set pressure value, the buzzer alarm is used for informing a detector, so that whether the hole in the pipeline is complete or not is detected.

Description

Technical Field

[0001] The utility model relates to detection equipment, in particular to a pipeline air tightness detection device. Background Art

[0002] like Figure 1 As shown, a pipeline includes a main pipe 90 and a side pipe 91. The side pipe 91 is fixed to the main pipe 90 by welding. Before the main pipe 90 is welded to the side pipe 91, a hole needs to be opened in the main pipe 90, and then the end of the side pipe 91 is fitted with the hole and then welded.

[0003] After the above-mentioned pipeline welding is completed, in order to ensure product quality, the pipeline needs to be tested for sealing. Usually, the two air outlets 93 of the pipeline are blocked, and then sealed and fixed to the pipeline air inlet 92 through an air pipe, and then the entire pipe body is submerged in water. At this time, air is injected into the pipeline air inlet 92 through an air pump, and whether the air tightness meets the standard can be judged by whether bubbles emerge.

[0004] However, the opening of the main pipe 90 and the welding between the main pipe 90 and the side pipe 91 are performed by automated equipment. When the main pipe 90 has no hole, the hole is incomplete or the hole is too small, after the side pipe 91 is welded, although it is possible to observe whether a complete hole is processed inside the connection through the outlet of the main pipe 90, it is a waste of manpower and time to check one by one. Utility Model Content

[0005] In view of this, the utility model aims to provide a pipeline air tightness detection device, which has the function of detecting whether the opening of the main pipe is complete.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a pipeline air tightness detection device, including an installation platform, on which a mounting frame, a sealing assembly and an air pressure monitoring assembly are arranged, the mounting frame is used to limit the position of the pipeline, the sealing assembly is used to block the air inlet and outlet of the pipeline, the air pressure monitoring assembly includes an air pump, an air pipe group, a pressure sensor and a buzzer alarm, the pressure sensor is electrically connected to the buzzer alarm, the air pipe group is connected to the air pump, the sealing assembly and the pressure sensor, and a water pool is also arranged at the bottom of the installation platform, and a cylinder is arranged at the side end of the water pool to drive the installation platform to move up and down.

[0007] Through the above-mentioned technical means, the pipeline is limited by the mounting frame to facilitate installation by the operator, the air inlet and outlet of the pipeline are blocked by the sealing component to achieve the sealing of the pipeline, the pipeline is ventilated by the air pressure detection component, and the pipeline is sunk into the water pool by the cylinder to detect the air tightness of the pipeline, the pressure sensor and the air pump are connected by the air pipe group, and when the pressure sensor does not detect the pressure or the pressure value does not match the set pressure value, the detector is notified by the buzzer alarm, thereby detecting whether the opening in the pipeline is complete.

[0008] Preferably, a plurality of mounting brackets are provided on the mounting platform, and the sealing assembly includes a plurality of cylinder twos and cylinder threes, wherein the cylinder two is against the air inlet of the pipeline, and the cylinder three is against the air outlet of the pipeline, and pressure heads are provided at the output ends of the cylinder two and the cylinder three, and an air passage is opened in the pressure head, and the air passage is connected in series with the air supply pipe group and is connected with the pressure sensor and the air pump.

[0009] Through the above technical means, by setting up multiple installation frames and connecting the pipelines in series, multiple pipelines can be tested simultaneously, thereby increasing the detection efficiency.

[0010] Preferably, a sealing joint is further provided between the gas delivery pipe group and the pressure head, and the sealing joint includes a shell, an input interface is provided at the side end of the shell, an output interface is provided at the bottom of the shell, a pneumatic seal is provided at the input interface, a flange is also provided on the outside of the shell, a sealing rubber is provided at the bottom of the flange, a protrusion matching with the flange is provided on the top of the pressure head, a connecting hole is provided on the protrusion, and the shell is threadedly connected to the connecting hole.

[0011] Through the above technical means, by setting a sealing rubber at the bottom of the flange, the sealing between the sealing joint and the pressure head is increased, and the sealing between the input pipe group and the sealing joint is increased through the pneumatic seal, thereby preventing the detection personnel from making misjudgments.

[0012] Preferably, the pneumatic seal includes a mounting ring 1, a sliding ring, a sealing ring 1 and a sealing ring 2. A sealing ring groove 1 is provided at the end of the gas pipe group. The sealing ring 1 is arranged in the sealing ring groove 1. The sealing ring 2 and the sliding ring are arranged between the gas pipe group and the input interface. The mounting ring 1 is threadedly fixed to the input interface. A sealing ring groove 2 is provided in the mounting ring 1 for the sealing ring 1 and the sliding ring to slide. A sealing rubber pad is also provided at the bottom of the mounting ring 1.

[0013] Through the above technical means, the sealing performance is increased by setting the sealing ring 1, and through the cooperation between the sliding ring and the sealing ring 2, when the gas pipe group is ventilated, the sealing ring 2 and the sliding ring are pressed by air pressure, thereby further increasing the sealing performance. The installation of the sealing ring 1, the sealing ring 2 and the sliding ring is facilitated by the installation ring 1, and the connection sealing performance of the installation ring 1 is increased by the sealing rubber pad.

[0014] Preferably, a straight rod is also provided in the sealing joint, one end of the straight rod passes through and is exposed at the top of the sealing joint, a sealing plug is provided on the other side, a mounting ring 2 is provided on the bottom side of the sealing joint, a convex ring is also provided in the middle of the straight rod, and a conical spring is provided between the mounting ring 2 and the convex ring.

[0015] Through the above-mentioned technical means, by arranging a sealing plug at the bottom of the straight rod and by arranging a conical spring between the mounting ring 2 and the convex ring, when there is no ventilation in the sealing joint, the conical spring drives the sealing plug to press against the bottom of the sealing joint to form a closure; when there is ventilation in the sealing joint, the air pressure pushes the sealing plug out and retracts the part of the straight rod exposed from the sealing joint, thereby facilitating the inspection personnel to judge which pipeline is blocked and further increasing efficiency.

[0016] Preferably, a rubber stopper is further provided at the end of the pressure head, a slide rail is further provided at the bottom side of the pressure head, a slide groove is provided on the pressure head, and the slide rail is slidably matched with the slide groove.

[0017] Through the above technical means, the sealing between the pressure head and the pipeline is increased by the rubber block, the movement accuracy of the pressure head is increased by the cooperation between the sliding groove and the sliding rail, the installation accuracy of the cylinder is improved when installing the cylinder, and the pressure head is prevented from being pushed out and causing water leakage in the pipeline.

[0018] Preferably, the gas pipe group includes gas pipe 1, gas pipe 2 and a connecting pipe, gas pipe 1 is arranged between the air pump and the pressure head, the connecting pipe is arranged between different pressure heads, and gas pipe 2 is arranged between the pressure sensor and the pressure head.

[0019] By means of the above technical means, the pressure heads are connected in series through connecting pipes, so that the gas enters the pressure sensor after passing through all the pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the pipeline structure;

[0021] Figure 2 It is a structural schematic diagram of an embodiment;

[0022] Figure 3 It is a partial schematic diagram of an embodiment;

[0023] Figure 4 A partial cross-sectional view of an embodiment;

[0024] Figure 5 It is a structural schematic diagram of a sealing joint;

[0025] Figure 6 Schematic diagram of the structure of the pneumatic seal;

[0026] Figure 7 for Figure 6 Schematic diagram of part A.

[0027] Reference numerals: 1, mounting platform; 2, sealing assembly; 3, air pressure monitoring assembly; 4, mounting frame; 5, gas pipe assembly; 6, pressure sensor; 8, water tank; 9, cylinder 1; 10, cylinder 2; 11, cylinder 3; 12, pressure head; 13, gas pipe 1; 14, gas pipe 2; 15, connecting pipe; 16, sealing joint; 17, housing; 18, input interface; 19, output interface; 20, pneumatic seal; 21, flange; 22, sealing rubber; 23. Bump; 24. Connecting hole; 25. Mounting ring 1; 26. Sliding ring; 27. Sealing ring 1; 28. Sealing ring 2; 29. ​​Sealing ring groove 2; 30. Sealing ring groove 1; 31. Sealing pad; 32. Rubber stopper; 33. Slide rail; 34. Sliding groove; 35. Straight rod; 36. Sealing plug; 37. Mounting ring 2; 38. Bump; 39. Conical spring; 40. Airway; 90. Main pipe; 91. Side pipe; 92. Air inlet; 93. Air outlet. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0029] A pipeline air tightness detection device includes an installation platform 1. The installation platform 1 is provided with a sealing component 2, an air pressure monitoring component 3 and four mounting frames 4. The mounting frame 4 is provided with a groove adapted to the pipeline to facilitate limiting the position of the pipeline. The air pressure monitoring component 3 includes an air pump, an air pipe group 5, a pressure sensor 6 and a buzzer alarm. The pressure sensor 6 is electrically connected to the buzzer alarm. When the pressure value received by the pressure sensor 6 is different from the preset value, the buzzer alarm emits an alarm sound. The air pipe group 5 connects the air pump, the sealing component 2 and the pressure sensor 6. A water pool 8 is also provided at the bottom of the installation platform 1. The four axes of the water pool 8 are all provided with a cylinder 9 for driving the installation platform 1 to move up and down. When it is necessary to detect the air tightness of the pipeline, the cylinder 9 sinks the installation platform 1 as a whole into the water pool 8, and the detection personnel judge the air tightness by observing the bubbles.

[0030] The sealing component 2 is used to block the air inlet 92 and the air outlet 93 of the pipeline. The sealing component 2 includes four cylinders 2 10 and four cylinders 3 11. The cylinder 2 10 abuts against the two air inlets 92 of the pipeline, and the cylinder 3 11 abuts against the air outlet 93 of the pipeline. The output ends of the cylinders 2 10 and 3 11 are provided with pressure heads 12. The pressure heads 12 are provided with air passages 40. The air passages 40 are connected to the air inlet 92 of the side pipe 91. The air delivery pipe group 5 is connected in series with the air passage 40 and is connected to the pressure sensor 6 and the air pump. The air delivery pipe group 5 includes an air delivery pipe 13, an air delivery pipe 2 14 and a connecting pipe 15. The air delivery pipe 13 is provided with a pressure head 12. It is placed between the air pump and the first pressure head 12, the connecting pipe 15 is set between different pressure heads 12, and the air supply pipe 14 is set between the pressure sensor 6 and the pressure head 12. The gas is pressed out from the air pump and enters the pipeline in turn, and finally enters the pressure sensor 6. When the inside of a certain air pipe on the mounting bracket 4 is blocked, the pressure sensor 6 will not receive the pressure. When the opening is small, the pressure received by the pressure sensor 6 will decrease. When the pressure sensor 6 does not detect the pressure or the pressure value does not match the set pressure value, the detection personnel are notified by the buzzer alarm, so as to detect whether the opening in the pipeline is complete.

[0031] A sealing joint 16 is also provided between the gas delivery pipe group 5 and the pressure head 12. The sealing joint 16 includes a shell 17. An input interface 18 is provided at the side end of the shell 17. An output interface 19 is provided at the bottom of the shell 17. A pneumatic seal 20 is provided at the input interface 18. A flange 21 is also provided on the outside of the shell 17. A sealing rubber 22 is provided at the bottom of the flange 21. A protrusion 23 that cooperates with the flange 21 is provided on the top of the pressure head 12. A connecting hole 24 is provided on the protrusion 23. The shell 17 is threadedly connected to the connecting hole 24. A hexagonal structure is provided on the top of the shell 17 to facilitate a wrench to screw the shell 17 into the connecting hole 24.

[0032] The pneumatic seal 20 includes a mounting ring 25, a sliding ring 26, a sealing ring 27 and a sealing ring 28. The mounting ring 25 is provided with a sealing ring groove 29 for the sealing ring 27 and the sliding ring 26 to slide. The end of the gas pipe group 5 is provided with a sealing ring groove 30. The sealing ring 27 is arranged in the sealing ring groove 30. The sliding ring 26 and the mounting ring 25 are in inclined contact. The sealing ring 28 and the sliding ring 26 are arranged between the gas pipe group 5 and the input interface 18. The mounting ring 25 is threadedly fixed to the input interface 18. The mounting ring 25 is provided with a sealing ring groove 30. A sealing rubber pad 31 is also provided at the bottom. When installing the pneumatic seal 20, first install the sealing ring 28 and the sliding ring 26 into the gas interface, then install the sealing ring 28 into the mounting ring 1 25, and finally screw the mounting ring 1 25 into the gas interface and press the sealing rubber pad 31. After inserting the gas pipeline group 5, the sealing ring 1 27 enters the sealing ring groove 1 30. When the gas pipeline group 5 is ventilated, the gas pressure drives the sealing ring 28 to move against the sliding ring 26, and causes the sliding ring 26 to press the sealing ring 1 27 and the mounting ring 1 25, thereby achieving the purpose of sealing.

[0033] A rubber stopper 32 is also provided at the end of the pressure head 12. The rubber stopper 32 of the pressure head 12 corresponding to the main pipe 90 on the cylinder 10 is not opened, and the remaining rubber stops 32 are provided with ventilation holes. When the pressure head 12 is pressed against the pipeline, the gas only enters through the air inlet 92 of the side pipe 91 and flows out from the air outlet 93 of the main pipe 90. The inlet of the main pipe 90 is in a closed state. A slide rail 33 is also provided on the bottom side of the pressure head 12. A sliding groove 34 is provided on the pressure head 12. The slide rail 33 and the sliding groove 34 slide together. The cooperation between the sliding groove 34 and the slide rail 33 increases the movement accuracy of the pressure head 12, improves the installation accuracy of the cylinder when installing the cylinder, and prevents the pressure head 12 from being pushed out and causing water leakage in the pipeline.

[0034] A straight rod 35 is also provided in the sealing joint 16, one end of the straight rod 35 passes through and is exposed at the top of the sealing joint 16, the exposed part is engraved with scales, and a sealing plug 36 is provided on the other side. The sealing joint 16 and the straight rod 35 are sealed by a rubber ring, and a mounting ring 2 37 is provided on the bottom side of the sealing joint 16, and the mounting ring 2 37 is threadedly connected to the bottom of the sealing joint 16. A convex ring 38 is also provided in the middle of the straight rod 35, and a conical spring 39 is provided between the mounting ring 2 37 and the convex ring 38. When there is no ventilation in the sealing joint 16, the conical spring 39 drives the straight rod 35 to move upward by elastic force. At this time, the sealing plug 36 is against the bottom of the sealing joint 16 and forms a closed space. When the sealing joint 16 is ventilated, the air pressure pushes out the sealing plug 36 and retracts the part of the straight rod 35 exposed from the sealing joint 16, so that it is convenient for the inspection personnel to judge which pipeline is blocked or which pipeline has a smaller opening by the distance of the straight rod 35 exposed from the sealing joint 16, thereby further increasing efficiency.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A pipeline air tightness detection device, characterized in that: The invention comprises a mounting platform (1), on which a mounting frame (4), a sealing assembly (2) and an air pressure monitoring assembly (3) are arranged. The mounting frame (4) is used to limit the position of the pipeline, the sealing assembly (2) is used to block the air inlet (92) and the air outlet (93) of the pipeline, the air pressure monitoring assembly (3) comprises an air pump, an air delivery pipe group (5), a pressure sensor (6) and a buzzer alarm, the pressure sensor (6) is electrically connected to the buzzer alarm, the air delivery pipe group (5) is connected to the air pump, the sealing assembly (2) and the pressure sensor (6), and a water pool (8) is also arranged at the bottom of the mounting platform (1), and a cylinder (9) is arranged at the side end of the water pool (8) for driving the mounting platform (1) to move up and down.

2. A pipeline air tightness detection device according to claim 1, characterized in that: The mounting platform (1) is provided with a plurality of mounting frames (4), the sealing assembly (2) comprises a plurality of cylinders two (10) and cylinders three (11), the cylinder two (10) abuts against the air inlet (92) of the pipeline, the cylinder three (11) abuts against the air outlet (93) of the pipeline, the output ends of the cylinders two (10) and three (11) are provided with pressure heads (12), an air passage (40) is provided in the pressure head (12), and the air delivery pipe group (5) is connected in series with the air passage (40) and is in communication with the pressure sensor (6) and the air pump.

3. A pipeline air tightness detection device according to claim 2, characterized in that: A sealing joint (16) is also provided between the gas delivery pipe group (5) and the pressure head (12), and the sealing joint (16) comprises a shell (17), an input interface (18) is provided at the side end of the shell (17), an output interface (19) is provided at the bottom of the shell (17), a pneumatic seal (20) is provided at the input interface (18), a flange (21) is also provided on the outside of the shell (17), a sealing rubber (22) is provided at the bottom of the flange (21), a convex block (23) cooperating with the flange (21) is provided at the top of the pressure head (12), a connecting hole (24) is provided on the convex block (23), and the shell (17) is threadedly connected to the connecting hole (24).

4. A pipeline air tightness detection device according to claim 3, characterized in that: The pneumatic seal (20) comprises a mounting ring (25), a sliding ring (26), a sealing ring (27) and a sealing ring (28). A sealing ring groove (30) is provided at the end of the gas delivery pipe group (5). The sealing ring (27) is arranged in the sealing ring groove (30). The sealing ring (28) and the sliding ring (26) are arranged between the gas delivery pipe group (5) and the input interface (18). The mounting ring (25) and the input interface (18) are fixed by threads. A sealing ring groove (29) is provided in the mounting ring (25) for the sealing ring (27) and the sliding ring (26) to slide. A sealing rubber pad (31) is also provided at the bottom of the mounting ring (25).

5. The pipeline air tightness detection device according to claim 3 is characterized in that: A straight rod (35) is also provided in the sealing joint (16), one end of the straight rod (35) passes through and is exposed at the top of the sealing joint (16), and a sealing plug (36) is provided on the other side. A second mounting ring (37) is provided on the bottom side of the sealing joint (16), a convex ring (38) is also provided in the middle of the straight rod (35), and a conical spring (39) is provided between the second mounting ring (37) and the convex ring (38).

6. A pipeline air tightness detection device according to claim 2, characterized in that: The end of the pressure head (12) is also provided with a rubber stopper (32), the bottom side of the pressure head (12) is also provided with a slide rail (33), a slide groove (34) is provided on the pressure head (12), and the slide rail (33) is slidably matched with the slide groove (34).

7. A pipeline air tightness detection device according to claim 1, characterized in that: The gas delivery pipe group (5) comprises a gas delivery pipe 1 (13), a gas delivery pipe 2 (14) and a connecting pipe (15); the gas delivery pipe 1 (13) is arranged between the air pump and the pressure head (12); the connecting pipe (15) is arranged between different pressure heads (12); and the gas delivery pipe 2 (14) is arranged between the pressure sensor (6) and the pressure head (12).

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