Pipe joint sealing performance detection device

Abstract

The invention discloses a pipe joint sealing performance detection device, which comprises a bottom plate, a detection box, a stand column, a top plate, a moving mechanism, a hydraulic mechanism, a bracket, a mounting head, a storage box, a plugging head, a cleaning box, a fixed rod, a clamping head, an extension block, a water outlet pipe and a spray head, the device comprises a bottom plate, a detection box with the top being of an opening structure is arranged on the bottom plate, stand columns are arranged at the four corners of the upper portion of the detection box, a top plate is jointly installed at the top ends of the stand columns, a moving mechanism is arranged below the top plate, a hydraulic mechanism is arranged below the moving mechanism, and a support of an inverted-T-shaped structure is connected to the lower portion of the hydraulic mechanism. A plurality of mounting heads in threaded connection with one end of the pipe joint are mounted on the side wall of the bracket; a storage box is arranged on the side wall of the detection box, a plurality of plugging heads connected with the other end of the pipe joint are placed in the storage box, and the interior of the pipe joint can be cleaned, so that the smoothness of gas transmission is guaranteed, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe joint seal detection, in particular to the technical field of a pipe joint seal performance detection device. Background Art

[0002] A pipe joint is a part that connects pipelines in a hydraulic system or installs pipelines on hydraulic components. This is a general term for detachable connectors in a fluid passage, and a pipe joint is a connection tool between pipelines.

[0003] Pipelines need to be connected by seals, and the quality of the sealing performance determines the usability of the pipe joint. Therefore, it is necessary to perform seal detection on the pipe joint. Currently, the manual detection method is to connect the nut end of the quick connector to the compressed air pipeline, fill the quick connector with compressed air and maintain the pressure. Only the static seal performance detection of one quick connector can be achieved in the same detection, with low detection efficiency and high detection difficulty.

[0004] To solve the problems raised in the above technology, for example, the patent application No. CN201620039980.0 discloses a static seal performance detection station for quick connectors. The static seal performance detection station is arranged around the indexing plate, and the indexing plate is provided with a clamping fixture for clamping the quick connector; the static seal performance detection station includes a plurality of detection manifolds and a manifold mounting bracket for mounting the detection manifolds; the detection manifolds are located directly above the clamping fixture; the side of the detection manifold is provided with a branch pipe communicated with the air source, and a pressure sensor is also arranged between the detection manifold and the air source. The quick connector is statically sealed by the detection manifold controlled by a cylinder, and the quick connector is inflated and pressurized and maintained for a certain time, and the static seal performance is measured by comparing the pressure difference inside the quick connector before and after pressure maintenance with the calibration value. The detection is convenient and the degree of automation is high.

[0005] However, the above device still has the following defects: The above detection device is inconvenient to install the pipe joint and has inconvenient operation, resulting in low detection efficiency.

[0006] To solve the problems raised in the above technology, for example, the patent application No. CN202023208695.2 discloses a pipe joint seal detection device with strong sealing performance, including a detection box, a control panel, a water isolation plate, a transverse partition plate, two sets of pushing cylinders, a mounting rack, two sets of lifting cylinders, air connecting pipes, multiple sets of screw plugs, a maintenance door and two sets of hinges. There is a cavity inside the detection box. The right chamber of the detection box is filled with water, and then by operating the control panel, the two sets of lifting cylinders are synchronously started to drive the air connecting pipes to move upward, so that the air connecting pipes leave the water surface. Then one ends of multiple pipe joints are respectively screwed onto multiple threaded sleeves, and then multiple sets of screw plugs are screwed onto the other ends of the pipe joints, with the characteristics of fast installation speed and high detection efficiency.

[0007] However, the above device still has the following defects: Since some impurities are likely to adhere to the inside of the pipe joint after use, the impurities accumulated over a long time are likely to block the internal channel of the pipe joint, thus affecting gas transmission. If the inside of the pipe joint is not cleaned in time, it will further affect the sealing detection effect of the pipe joint, resulting in inaccurate detection accuracy. Summary of the Invention

[0008] The purpose of the present invention is to solve the problems in the prior art and propose a pipe joint sealing performance detection device that can clean the inside of the pipe joint, thereby ensuring the smoothness of gas transmission and improving the detection accuracy.

[0009] To achieve the above purpose, the present invention proposes a pipe joint sealing performance detection device, which includes a bottom plate, a detection box, a column, a top plate, a moving mechanism, a hydraulic mechanism, a bracket, a mounting head, a storage box, a plugging head, a cleaning box, a fixing rod, a chuck, an extension block, a water outlet pipe and a nozzle; a detection box with an open top is provided on the bottom plate, columns are provided at the four corners above the detection box, the tops of the columns are jointly installed with a top plate, a moving mechanism is provided below the top plate, a hydraulic mechanism is provided below the moving mechanism, a bracket with a convex structure is connected below the hydraulic mechanism, and a plurality of mounting heads threadedly connected to one end of the pipe joint are installed on the side wall of the bracket; a storage box is provided on the side wall of the detection box, and a plurality of plugging heads connected to the other end of the pipe joint are placed inside the storage box; a cleaning box with an open top is provided on the bottom plate, a plurality of fixing rods are installed on the inner side wall of the cleaning box, a chuck for clamping the pipe joint is connected to the end of each fixing rod, two extension blocks are provided above the cleaning box, a water outlet pipe is installed between the extension blocks, and a plurality of nozzles are installed at the lower end of the water outlet pipe.

[0010] Preferably, a warning water level gauge is installed on the inner side wall of the detection box.

[0011] Preferably, the moving mechanism includes two fixing blocks, a threaded rod, a moving block, a vertical rod and a secondary moving gear. The fixing blocks are located below the top plate, the threaded rod is rotatably arranged between the fixing blocks, the outer wall of the threaded rod is threadedly connected with the moving block, the lower end surface of the moving block is connected with the vertical rod, and one end of the threaded rod penetrates through the side wall of the fixing block and is rotatably provided with the secondary moving gear.

[0012] Preferably, a first concave support is provided above the top plate, a motor is installed on the first concave support, the output shaft of the motor penetrates through the side wall of the first concave support and is connected with a driving gear, and the driving gear is meshed with the secondary moving gear.

[0013] Preferably, the hydraulic mechanism includes a second concave support, a hydraulic cylinder and a hydraulic rod. The top end of the second concave support is connected to the vertical rod. A hydraulic cylinder is installed on the second concave support. The driving end of the hydraulic cylinder penetrates through the lower end of the second concave support and is connected to a hydraulic rod. The end of the hydraulic rod is connected to the support.

[0014] Preferably, an air outlet pump is further provided on the top plate. The output end of the air outlet pump is connected to an air outlet pipe. One end of the air outlet pipe penetrates through the lower part of the top plate and communicates with the inside of the support. A first air transmission channel is provided inside the support, and a second air transmission channel is provided inside the mounting head. The first air transmission channel communicates with the second air transmission channel.

[0015] Preferably, the mounting heads are arranged in parallel at equal intervals, and the outer diameter of the mounting head is adapted to the inner diameter of the pipe joint.

[0016] Preferably, the chucks are arranged in parallel at equal intervals, and the inner diameter of the chuck is clamped with the outer diameter of the pipe joint.

[0017] Preferably, each spray head corresponds to each chuck, and the water outlet of the spray head faces the direction of the chuck.

[0018] Preferably, a water pump is provided on the bottom plate. The input end of the water pump is connected to an external water tank through a pipeline. The output end of the water pump is connected to a water transmission pipe. One end of the water transmission pipe penetrates through the side wall of the extension block and communicates with the water outlet pipe.

[0019] Advantages of the present invention: Through the combined cooperation of the cleaning tank, the fixing rod, the chuck, the extension block, the water outlet pipe and the spray head, the inside of the pipe joint can be cleaned. First, the pipe joint to be detected is sequentially clamped onto the chuck, and the pipe joint is pressed down until it is fixed on the chuck, so that the port of the pipe joint faces upward and is aligned with the water outlet of the spray head. Subsequently, the water pump pumps out the water in the external water tank and conveys it into the water transmission pipe. Then, the water is conveyed into the water outlet pipe through the water transmission pipe and finally sprayed out from each spray head on the water outlet pipe, so that the water can wash the inside of the pipe joint. After the inside of the pipe joint is washed by the water, the impurities will fall out through the lower port of the pipe joint, thereby achieving the cleaning effect. Subsequently, the cleaned pipe joints are sequentially installed onto the mounting heads, and the plug heads are screwed in to seal the ends of the pipe joints. Finally, a seal test is carried out, thus avoiding the influence of impurity accumulation on the detection accuracy. Description of the drawings

[0020] Figure 1 is the front view of a pipe joint seal performance detection device of the present invention; Figure 2 is the schematic view below the top plate of a pipe joint seal performance detection device of the present invention; Figure 3 It is a schematic diagram of the motor of a pipe joint sealing performance detection device of the present invention; Figure 4 It is a sectional view of the bracket of a pipe joint sealing performance detection device of the present invention; Figure 5 It is a schematic diagram of the cleaning box of a pipe joint sealing performance detection device of the present invention; Figure 6 It is a schematic diagram of the storage box of a pipe joint sealing performance detection device of the present invention; In the figure: 1 - bottom plate, 2 - detection box, 201 - warning water level scale, 3 - column, 4 - top plate, 5 - moving mechanism, 51 - fixed block, 52 - threaded rod, 53 - moving block, 54 - vertical rod, 55 - secondary driving gear, 6 - hydraulic mechanism, 61 - second concave support, 62 - hydraulic cylinder, 63 - hydraulic rod, 7 - bracket, 71 - first air transmission channel, 8 - mounting head, 81 - second air transmission channel, 9 - storage box, 10 - plugging head, 11 - cleaning box, 12 - fixed rod, 13 - chuck, 14 - extension block, 15 - water outlet pipe, 16 - spray head, 17 - first concave support, 18 - motor, 19 - driving gear, 20 - air outlet pump, 21 - air outlet pipe, 22 - water pump, 23 - water transmission pipe. Detailed implementation manners

[0021] Refer to Figures 1 to 6, a pipe joint sealing performance detection device of the present invention includes a bottom plate 1, a detection box 2, a column 3, a top plate 4, a moving mechanism 5, a hydraulic mechanism 6, a bracket 7, a mounting head 8, a storage box 9, a plugging head 10, a cleaning box 11, a fixing rod 12, a chuck 13, an extension block 14, a water outlet pipe 15 and a spray head 16; a detection box 2 with an open top structure is provided on the bottom plate 1, columns 3 are provided at the four corners above the detection box 2, a top plate 4 is jointly installed at the top ends of the columns 3, a moving mechanism 5 is provided below the top plate 4, a hydraulic mechanism 6 is provided below the moving mechanism 5, a bracket 7 with a convex structure is connected below the hydraulic mechanism 6, and a plurality of mounting heads 8 threadedly connected to one end of the pipe joint are installed on the side wall of the bracket 7; a storage box 9 is provided on the side wall of the detection box 2, and a plurality of plugging heads 10 connected to the other end of the pipe joint are placed inside the storage box 9; a cleaning box 11 with an open top structure is provided on the bottom plate 1, a plurality of fixing rods 12 are installed on the inner side wall of the cleaning box 11, and a chuck 13 for clamping the pipe joint is connected to the end of each fixing rod 12. Two extension blocks 14 are provided above the cleaning box 11, a water outlet pipe 15 is installed between the extension blocks 14, and a plurality of spray heads 16 are installed at the lower end of the water outlet pipe 15. By sequentially clamping the pipe joint to be detected onto the chuck 13 and pressing down the pipe joint until it is fixed on the chuck 13, the port of the pipe joint is made to face upward and aligned with the water outlet of the spray head 16. Subsequently, the water body of an external water tank is pumped out by a water pump 22 and conveyed into a transmission pipe 23, then the water body is conveyed into the water outlet pipe 15 through the transmission pipe 23, and finally sprayed out from each spray head 16 on the water outlet pipe 15, so that the water body can wash the inside of the pipe joint, and the impurities in the pipe joint will fall out through the lower port of the pipe joint after being washed by the water body, thereby achieving the cleaning effect.

[0022] Refer to Figure 1 , a warning water level scale 201 is installed on the inner side wall of the detection box 2, which plays a warning role to prevent the water level from overflowing from the detection box 2 when it is too high.

[0023] Refer to Figure 2 , the moving mechanism 5 includes two fixing blocks 51, a threaded rod 52, a moving block 53, a vertical rod 54 and a secondary driving gear 55. The fixing blocks 51 are located below the top plate 4, a threaded rod 52 is rotatably arranged between the fixing blocks 51, a moving block 53 is threadedly connected to the outer wall of the threaded rod 52, a vertical rod 54 is connected to the lower end surface of the moving block 53, and a secondary driving gear 55 is rotatably arranged at one end of the threaded rod 52 through the side wall of the fixing block 51. When the secondary driving gear 55 rotates, it drives the threaded rod 52 to rotate. The rotation of the threaded rod 52 drives the moving block 53 to move, thereby driving the bracket 7 below to move, so that the pipe joint can move back and forth in the detection box 2, improving the detection effect.

[0024] Refer toFigure 3 Above the top plate 4, there is a first concave support 17. An electric motor 18 is installed on the first concave support 17. The output shaft of the electric motor 18 penetrates through the side wall of the first concave support 17 and is connected with a driving gear 19. The driving gear 19 is meshed and connected with a driven gear 55. The input end of the electric motor 18 is connected to an external power supply. When the electric motor 18 drives the output shaft to rotate, the output shaft drives the driving gear 19 to rotate, and the driving gear 19 drives the driven gear 55 to rotate.

[0025] Refer to Figure 2 As shown, the hydraulic mechanism 6 includes a second concave support 61, a hydraulic cylinder 62 and a hydraulic rod 63. The top end of the second concave support 61 is connected with a vertical rod 54. A hydraulic cylinder 62 is installed on the second concave support 61. The driving end of the hydraulic cylinder 62 penetrates through the lower end of the second concave support 61 and is connected with a hydraulic rod 63. The end of the hydraulic rod 63 is connected with a bracket 7. The hydraulic cylinder 62 is controlled by an external power supply. When the hydraulic cylinder 62 drives the hydraulic rod 63 to descend, the hydraulic rod 63 drives the bracket 7 to descend, and the bracket 7 drives the pipe joint to immerse into the water inside the detection box 2, thereby starting the sealing detection of the pipe joint.

[0026] Refer to Figure 1 and Figure 4 As shown, an air outlet pump 20 is further arranged on the top plate 4. The output end of the air outlet pump 20 is connected with an air outlet pipe 21. One end of the air outlet pipe 21 penetrates through the lower part of the top plate 4 and is communicated with the inside of the bracket 7. A first air transmission channel 71 is arranged inside the bracket 7, and a second air transmission channel 81 is arranged inside the mounting head 8. The first air transmission channel 71 is communicated with the second air transmission channel 81. The input end of the air outlet pump 20 is connected to an external power supply. When the air outlet pump 20 is started, gas enters the air outlet pipe 21, and the gas is conveyed into the bracket 7 through the air outlet pipe 21. Finally, the gas enters the pipe joint through the first air transmission channel 71 and the second air transmission channel 81. When there are microscopic cracks or assembly defects on the sealing surface of the pipe joint, the internal high-pressure gas will penetrate outward along the leakage channel under the drive of the pressure difference. The gas escaping into the water will form visible bubbles due to the buoyancy effect. It can be seen that the sealing performance of the pipe joint is poor. On the contrary, if there are no bubbles in the water, it indicates that there are no microscopic cracks or assembly defects in the pipe joint, and the sealing performance is good, thus achieving the effect of sealing detection.

[0027] Refer to Figure 2 The mounting heads 8 are arranged in parallel at equal intervals, and the outer diameter of the mounting head 8 is adapted to the inner diameter of the pipe joint, and multiple pipe joints can be detected at one time, thereby improving the detection efficiency.

[0028] Refer to Figure 5, the chucks 13 are arranged in parallel at equal intervals, and the inner diameter of the chuck 13 is clamped with the outer diameter of the pipe joint, so that multiple pipe joints can be cleaned at one time, thereby improving the cleaning efficiency.

[0029] Refer to Figure 5 , each of the nozzles 16 corresponds to each of the chucks 13, and the water outlet of the nozzle 16 faces the direction of the chuck 13, so that the water sprayed by the nozzle 16 can wash the inside of the pipe joint and improve the cleaning effect.

[0030] Refer to Figure 5 , a water pump 22 is provided on the bottom plate 1. The input end of the water pump 22 is connected to an external water tank through a pipeline. The output end of the water pump 22 is connected with a water delivery pipe 23. One end of the water delivery pipe 23 penetrates through the side wall of the extension block 14 and is communicated with the water outlet pipe 15. The water pump 22 conveys water into the water delivery pipe 23, so that the water delivery pipe 23 conveys water into the water outlet pipe 15 and finally sprays out from each nozzle 16 on the water outlet pipe 15.

[0031] The working process of the present invention: During the operation of a pipe joint sealing performance detection device of the present invention, first, the pipe joints to be detected are successively clamped onto the chuck 13, and the pipe joints are pressed down until they are fixed on the chuck 13, making the ports of the pipe joints face upward and align with the water outlets of the nozzles 16. Subsequently, the water pump 22 pumps out the water from the external water tank and conveys it into the transfer pipe 23, and then the water is conveyed into the outlet pipe 15 through the transfer pipe 23, and finally sprayed out from each nozzle 16 on the outlet pipe 15, so that the water body can wash the inside of the pipe joint. After the inside of the pipe joint is washed by the water body, impurities will fall out through the lower port of the pipe joint, thus achieving the cleaning effect. After the pipe joint is cleaned, the pipe joint is successively screwed onto the mounting head 8, and the plugging head 10 is screwed into the other end of the pipe joint. Subsequently, the hydraulic cylinder 62 drives the hydraulic rod 63 to descend, the hydraulic rod 63 drives the bracket 7 to descend, and the bracket 7 drives the pipe joint to immerse into the water inside the detection tank 2. Then, the air outlet pump 20 is started to make the gas enter the outlet pipe 21, and the gas is conveyed into the bracket 7 through the outlet pipe 21. Finally, the gas enters the pipe joint through the first gas transmission channel 71 and the second gas transmission channel 81. When there are microscopic cracks or assembly defects on the sealing surface of the pipe joint, the internal high-pressure gas will penetrate outward along the leakage channel under the drive of the pressure difference. After the escaped gas enters the water, visible bubbles will be formed due to the buoyancy effect. It can be seen that the sealing performance of the pipe joint is poor. On the contrary, if no bubbles are generated in the water, it indicates that there are no microscopic cracks or assembly defects in the pipe joint, and the sealing performance is good. The output shaft is rotated by driving of the motor 18, the output shaft drives the driving gear 19 to rotate, the driving gear 19 drives the driven gear 55 to rotate, after the driven gear 55 rotates, it drives the threaded rod 52 to rotate, the threaded rod 52 rotates to drive the moving block 53 to move, and further drives the bracket 7 below to move, so that the pipe joint can move back and forth in the detection tank 2, improving the detection effect.

[0032] The control mode of the present invention is controlled by manually starting and closing the switch. The wiring diagram of the power element and the power supply are common knowledge in the field, and the present invention mainly aims to protect the mechanical device, so the control mode and wiring layout of the present invention will not be explained in detail.

[0033] The above embodiments are illustrative of the present invention, not restrictive of the present invention. Any solution obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. A pipe joint sealing performance detection device, characterized in that: It includes a bottom plate (1), a detection box (2), a column (3), a top plate (4), a moving mechanism (5), a hydraulic mechanism (6), a bracket (7), a mounting head (8), a storage box (9), a plugging head (10), a cleaning box (11), a fixing rod (12), a chuck (13), an extension block (14), a water outlet pipe (15) and a spray head (16); A detection box (2) with an open top structure is provided on the bottom plate (1). Columns (3) are provided at the four corners above the detection box (2). The tops of the columns (3) are jointly provided with a top plate (4). A moving mechanism (5) is provided below the top plate (4). A hydraulic mechanism (6) is provided below the moving mechanism (5). The hydraulic mechanism (6) is connected below with a bracket (7) having a convex structure. A plurality of mounting heads (8) threadedly connected to one end of a pipe joint are installed on the side wall of the bracket (7); A storage box (9) is provided on the side wall of the detection box (2). A plurality of plugging heads (10) connected to the other end of the pipe joint are placed inside the storage box (9); A cleaning box (11) with an open top structure is provided on the bottom plate (1). A plurality of fixing rods (12) are installed on the inner side wall of the cleaning box (11). The end of each fixing rod (12) is connected with a chuck (13) for clamping the pipe joint. Two extension blocks (14) are provided above the cleaning box (11). A water outlet pipe (15) is installed between the extension blocks (14). A plurality of spray heads (16) are installed at the lower end of the water outlet pipe (15).

2. The pipe joint sealing performance detection device according to claim 1, characterized in that: A warning water level gauge (201) is installed on the inner side wall of the detection box (2).

3. The pipe joint sealing performance detection device according to claim 1, characterized in that: The moving mechanism (5) includes two fixing blocks (51), a threaded rod (52), a moving block (53), a vertical rod (54) and a secondary driving gear (55). The fixing blocks (51) are located below the top plate (4). A threaded rod (52) is rotatably provided between the fixing blocks (51). A moving block (53) is threadedly connected to the outer wall of the threaded rod (52). A vertical rod (54) is connected to the lower end surface of the moving block (53). One end of the threaded rod (52) penetrates through the side wall of the fixing block (51) and is rotatably provided with a secondary driving gear (55).

4. The pipe joint sealing performance detection device according to claim 1, characterized in that: The moving mechanism (5) includes two fixing blocks (51), a threaded rod (52), a moving block (53), a vertical rod (54) and a secondary driving gear (55). The fixing blocks (51) are located below the top plate (4). A threaded rod (52) is rotatably provided between the fixing blocks (51). A moving block (53) is threadedly connected to the outer wall of the threaded rod (52). A vertical rod (54) is connected to the lower end surface of the moving block (53). One end of the threaded rod (52) penetrates through the side wall of the fixing block (51) and is rotatably provided with a secondary driving gear (55).

5. The pipe joint sealing performance detection device according to claim 3, characterized in that: The hydraulic mechanism (6) includes a second concave support (61), a hydraulic cylinder (62) and a hydraulic rod (63). The top end of the second concave support (61) is connected to the vertical rod (54). A hydraulic cylinder (62) is installed on the second concave support (61). The driving end of the hydraulic cylinder (62) penetrates through the lower end of the second concave support (61) and is connected to a hydraulic rod (63). The end of the hydraulic rod (63) is connected to the support (7).

6. The pipe joint sealing performance detection device according to claim 1, characterized in that: An air outlet pump (20) is further provided on the top plate (4). The output end of the air outlet pump (20) is connected to an air outlet pipe (21). One end of the air outlet pipe (21) penetrates below the top plate (4) and communicates with the inside of the support (7). A first air transmission channel (71) is provided inside the support (7). A second air transmission channel (81) is provided inside the mounting head (8). The first air transmission channel (71) communicates with the second air transmission channel (81).

7. The leak detection device for pipe connectors according to claim 1, characterized in that: The mounting heads (8) are arranged in parallel at equal intervals, and the outer diameter of the mounting head (8) is adapted to the inner diameter of the pipe joint.

8. The tube joint sealing performance detection device according to claim 1, characterized in that: The chucks (13) are arranged in parallel at equal intervals, and the inner diameter of the chuck (13) is clamped with the outer diameter of the pipe joint.

9. The pipe joint sealing performance detection device according to claim 1, wherein: Each spray head (16) corresponds to each chuck (13), and the water outlet of the spray head (16) faces the direction of the chuck (13).

10. The pipe joint sealing performance detection device according to claim 1, characterized in that: A water pump (22) is provided on the bottom plate (1). The input end of the water pump (22) is connected to an external water tank through a pipeline. The output end of the water pump (22) is connected to a water transmission pipe (23). One end of the water transmission pipe (23) penetrates through the side wall of the extension block (14) and communicates with the water outlet pipe (15).

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