A portable valve airtightness detection device

Abstract

The present invention discloses a portable valve airtightness detection device, which relates to the technical field of valve detection; it includes a detection box, and the interior of the detection box is divided into three detection areas by two partition plates II, and each area corresponds to the hole positions at both ends and the top of the valve respectively; docking mechanisms I are respectively arranged in the detection areas at both ends inside the detection box for docking with the hole positions at both ends of the valve, and an installation frame is arranged on the top of the detection box, and a docking mechanism II is arranged on the installation frame for docking with the hole position at the top of the valve; the present invention can conveniently complete the airtightness detection of the valve, with simple operation and convenient docking, and different areas are separated, so that the airtightness problems of each docking area of the valve can be directly judged.

Description

Technical Field

[0001] The present invention relates to the technical field of valve detection, and particularly relates to a portable valve airtightness detection device. Background Art

[0002] Valve airtightness detection is an important test step to ensure that the valve will not leak gas or liquid during operation. This detection process is usually carried out after valve manufacturing, repair or installation to confirm that the valve has good sealing performance and is suitable for systems that need to maintain gas or liquid pressure. There are many existing detection methods. One common method is bubble detection. The valve is immersed in water and the detection gas is introduced. If there is a problem with airtightness, bubbles will be generated in the water. This method is relatively cumbersome to operate, and the docking operation of the valve is a relatively complex link. Based on this, the present invention proposes a detection device that can conveniently complete the airtightness detection of the valve, has simple operation, convenient docking, and divides different regions, and can directly judge the airtightness problems of each docking region of the valve. Summary of the Invention

[0003] Aiming at the above technical problems, the present invention can conveniently complete the airtightness detection of the valve, has simple operation, convenient docking, and divides different regions, and can directly judge the airtightness problems of each docking region of the valve.

[0004] The technical solution used in the present invention is as follows: A portable valve airtightness detection device includes a detection box. The inside of the detection box is divided into three detection regions by two partition plates II, and each region corresponds to the hole positions at both ends and the top of the valve respectively; Docking mechanisms I are respectively arranged in the detection regions at both ends inside the detection box for docking with the hole positions at both ends of the valve. An installation frame is arranged on the top of the detection box, and a docking mechanism II is arranged on the installation frame for docking with the hole position at the top of the valve; The docking mechanism II includes a partition plate I arranged on the installation frame in a lifting manner. A clamping and docking mechanism is arranged inside the partition plate I for fixing and docking the valve; The docking mechanism I includes a sliding seat slidably installed on the outside of the detection box. A connecting shaft is connected to the sliding seat, and an installation ring is fixedly connected to the connecting shaft. Clamping mechanisms are arranged in an array on the installation ring for pressing the end of the connecting shaft against the hole position at the end of the valve; The clamping mechanism includes an installation rotating seat rotatably installed on the circumference of the installation ring. Two clamping plates are slidably installed on the installation rotating seat, and pressing plates are telescopically slidable on the two end faces of the installation ring.

[0005] Further, the docking mechanism II includes a gas transmission box and a lifting oil cylinder arranged on the installation frame. The lifting oil cylinder is used to control the movement of the partition plate I; The clamping and docking mechanism includes a docking oil cylinder arranged on the partition plate I. A docking part I is arranged on the telescopic rod of the docking oil cylinder. The docking part I is communicated with the bottom of the gas transmission box, and the docking part I is docked and communicated with the hole position at the top of the valve.

[0006] Further, grooves are respectively formed on the first partition plate and the second partition plate for positioning the pipeline area of the valve, and the first partition plate and the second partition plate are butted to divide the three detection areas inside the detection box.

[0007] Further, a fixed oil cylinder is also arranged on the first partition plate, and a clamping and supporting part is arranged on the telescopic rod of the fixed oil cylinder. The clamping and supporting part is L-shaped, and the horizontal end of the clamping and supporting part is used to support the top hole position of the valve.

[0008] Further, a filling box is arranged on the side of the detection box. The filling box is respectively communicated with the three detection areas inside the detection box to transmit the detection water source; a first motor and a first lead screw are arranged outside the detection box. The first motor is used to drive the first lead screw, and the first lead screw and the sliding seat on the first docking mechanism form a screw pair.

[0009] Further, the first docking mechanism includes a control gear ring rotatably installed on the installation ring. An incomplete meshing gear ring one is arranged inside the control gear ring, and an incomplete meshing gear ring two is arranged outside the control gear ring for driving the clamping mechanism; a control motor is arranged on the circumference of the installation ring, and a control gear is arranged on the output shaft of the control motor. The control gear meshes with the end face of the control gear ring.

[0010] Further, the clamping mechanism includes a rotating shaft rotatably installed on the installation ring. Oblique columns are respectively connected to both ends of the rotating shaft, and a connecting gear one is arranged on the rotating shaft. A connecting gear two is connected to the end face of the installation seat. A first spring is connected between the two clamping plates; the incomplete meshing gear ring one meshes with the connecting gear two to drive the installation seat; the incomplete meshing gear ring two meshes with the connecting gear one to drive the oblique column.

[0011] Further, the clamping mechanism further includes a contact part arranged on the pressing plate. The contact part contacts with the inclined end face of the oblique column. A second spring is connected between the pressing plate and the end face of the installation ring; when the control gear ring rotates, the incomplete meshing gear ring one first meshes with the connecting gear two to drive the installation seat to rotate, so that the two clamping plates are respectively located on both sides of the end hole position of the valve and the end of the connecting shaft. The incomplete meshing gear ring two meshes with the connecting gear one to drive the oblique column to rotate, and the oblique column pushes the contact part to control the pressing plate to press the clamping plate.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: (1) By controlling the lifting of the partition plate I through the lifting oil cylinder of the mounting frame, the valve is transferred into the inspection box, and the two end regions of the valve are located in the inspection regions at both ends inside the inspection box, and the hole position region at the top of the valve is located in the inspection region in the middle. The partition plate I is docked with the partition plate II to separate the three inspection regions, and the bubbles in each inspection region can be directly judged; (2) The gas transmission box transmits the inspection gas, that is, transmits the inspection gas into the valve for inspection; when the valve is well sealed, no bubbles will appear in the three inspection regions. When there is a sealing problem in one of the docking regions, bubbles will appear in the corresponding inspection region, so as to complete the sealing inspection of different docking hole positions of the valve; (3) The present invention is convenient for docking and easy to operate. The docking mechanism I and the docking mechanism II can automatically complete the docking and pressing operation, and the docking part adopts the docking flange under the condition of valve use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the docking mechanism II of the present invention.

[0015] Figure 3 It is a schematic diagram of the partial structure of the docking mechanism II of the present invention.

[0016] Figure 4 It is a schematic diagram of the installation structure of the docking mechanism I of the present invention.

[0017] Figure 5 It is a schematic diagram of the installation structure of the connecting shaft of the present invention.

[0018] Figure 6 It is a schematic diagram of the installation structure of the control gear ring of the present invention.

[0019] Figure 7 It is a schematic diagram of the inner and outer sides of the control gear ring of the present invention.

[0020] Figure 8 It is a schematic diagram of the structure of the clamping mechanism of the present invention.

[0021] Figure 9 It is a schematic diagram of the partial installation structure of the clamping mechanism of the present invention.

[0022] Reference numerals: 1 - detection box; 2 - filling box; 3 - first motor; 4 - first lead screw; 5 - sliding seat; 6 - mounting bracket; 7 - lifting oil cylinder; 8 - gas transmission box; 9 - first partition plate; 10 - docking oil cylinder; 11 - first docking part; 12 - fixing oil cylinder; 13 - clamping and supporting part; 14 - second partition plate; 15 - connecting shaft; 16 - mounting ring; 17 - control gear; 18 - control gear ring; 1801 - first incomplete meshing gear ring; 1802 - second incomplete meshing gear ring; 19 - control motor; 20 - rotating shaft; 21 - inclined column; 22 - first connecting gear; 23 - mounting rotating seat; 24 - second connecting gear; 25 - clamping plate; 26 - first spring; 27 - pressing plate; 28 - contact part; 29 - second spring. Detailed implementation manners

[0023] Embodiment: As Figures 1 to 9 shown, the inside of the detection box 1 is divided into three detection areas by two second partition plates 14, and each area corresponds to the hole positions at both ends and the top of the valve; docking mechanisms I are respectively arranged in the detection areas at both ends inside the detection box 1 for docking with the hole positions at both ends of the valve, a mounting bracket 6 is arranged on the top of the detection box 1, and a docking mechanism II is arranged on the mounting bracket 6 for docking with the hole position at the top of the valve; the docking mechanism II includes a first partition plate 9 arranged on the mounting bracket 6 in a lifting manner, and a clamping and docking mechanism is arranged inside the first partition plate 9 for fixing and docking the valve; the docking mechanism I includes a sliding seat 5 slidably mounted on the outside of the detection box 1, a connecting shaft 15 is connected to the sliding seat 5, a mounting ring 16 is fixedly connected to the connecting shaft 15, and a clamping mechanism is arranged in an array on the mounting ring 16 for pressing the end of the connecting shaft 15 against the hole position at the end of the valve; the clamping mechanism includes a mounting rotating seat 23 rotatably mounted on the circumference of the mounting ring 16, two clamping plates 25 are slidably mounted on the mounting rotating seat 23, and pressing plates 27 are telescopically slid on the two end faces of the mounting ring 16.

[0024] The second docking mechanism includes a gas transmission box 8 and a lifting oil cylinder 7 arranged on the mounting frame 6. The lifting oil cylinder 7 is used to control the movement of the first partition plate 9. The clamping and docking mechanism includes a docking oil cylinder 10 arranged on the first partition plate 9. A first docking part 11 is arranged on the telescopic rod of the docking oil cylinder 10. The first docking part 11 is communicated with the bottom of the gas transmission box 8 and is docked and communicated with the top hole position of the valve. Grooves are respectively formed on the first partition plate 9 and the second partition plate 14 for positioning the pipe area of the valve. The first partition plate 9 and the second partition plate 14 are docked to divide the three detection areas inside the detection box 1. A fixed oil cylinder 12 is also arranged on the first partition plate 9. A clamping and supporting part 13 is arranged on the telescopic rod of the fixed oil cylinder 12. The clamping and supporting part 13 is L-shaped. The horizontal end of the clamping and supporting part 13 is used to support the top hole position of the valve. A filling box 2 is arranged on the side of the detection box 1. The filling box 2 is respectively communicated with the three detection areas inside the detection box 1 to transmit the detection water source. A first motor 3 and a first lead screw 4 are arranged outside the detection box 1. The first motor 3 is used to drive the first lead screw 4. The first lead screw 4 and the slide block 5 on the first docking mechanism form a screw pair.

[0025] The first docking mechanism includes a control gear ring 18 rotatably installed on the mounting ring 16. An incomplete meshing gear ring 1801 is arranged inside the control gear ring 18, and an incomplete meshing gear ring 1802 is arranged outside, which is used to drive the clamping mechanism. A control motor 19 is arranged on the circumference of the mounting ring 16. A control gear 17 is arranged on the output shaft of the control motor 19. The control gear 17 is meshed with the end face of the control gear ring 18. The clamping mechanism includes a rotating shaft 20 rotatably installed on the mounting ring 16. Oblique columns 21 are respectively connected to both ends of the rotating shaft 20. A first connecting gear 22 is arranged on the rotating shaft 20. A second connecting gear 24 is connected to the end face of the mounting seat 23. A first spring 26 is connected between the two clamping plates 25. The incomplete meshing gear ring 1801 is meshed with the second connecting gear 24 to drive the mounting seat 23. The incomplete meshing gear ring 1802 is meshed with the first connecting gear 22 to drive the oblique column 21. The clamping mechanism further includes a contact part 28 arranged on the pressing plate 27. The contact part 28 is in contact with the inclined end face of the oblique column 21. A second spring 29 is connected between the pressing plate 27 and the end face of the mounting ring 16. When the control gear ring 18 rotates, the incomplete meshing gear ring 1801 first meshes with the second connecting gear 24 to drive the mounting seat 23 to rotate, so that the two clamping plates 25 are respectively located on both sides of the end hole position of the valve and the end of the connecting shaft 15. The incomplete meshing gear ring 1802 is meshed with the first connecting gear 22 to drive the oblique column 21 to rotate. The oblique column 21 pushes the contact part 28 to control the pressing plate 27 to press the clamping plate 25.

[0026] The working principle is as follows: Install the valve workpiece on the first partition plate 9. Specifically, the hole position at the top of the valve is located inside the clamping and supporting part 13. The fixed oil cylinder 12 controls the clamping and supporting part 13 to support the hole position at the top of the valve, that is, the lateral end of the clamping and supporting part 13 supports the hole position at the top of the valve; the pipe areas at both ends of the valve are located in the slots on the first partition plate 9. The lifting oil cylinder 7 of the mounting frame 6 controls the first partition plate 9 to lift and lower, so that the valve is transferred into the detection box 1, and the two end areas of the valve are located in the detection areas at both ends inside the detection box 1, and the hole position area at the top of the valve is located in the detection area in the middle. The first partition plate 9 is docked with the second partition plate 14 to separate the three detection areas; the docking oil cylinder 10 controls the movement of the first docking part 11, and the first docking part 11 is docked with the hole position at the top of the valve to complete the sealing.

[0027] For the hole positions at the ends of the valve, through the operation of the first motor 3, the first lead screw 4 rotates, so that the slide seat 5 moves, that is, the connecting shaft 15 and the mounting ring 16 move. The end of the connecting shaft 15 is docked with the hole position at the end of the valve. By controlling the operation of the motor 19, the gear ring 18 is controlled to rotate. The incomplete meshing gear ring 1801 first meshes with the second connecting gear 24 to drive the mounting rotating seat 23 to rotate, so that the two clamping plates 25 are respectively located on both sides of the hole position at the end of the valve and the end of the connecting shaft 15. Then the incomplete meshing gear ring 1802 meshes with the first connecting gear 22 to drive the inclined column 21 to rotate. The inclined column 21 pushes the contact part 28 to control the sliding of the pressing plate 27 and press the clamping plate 25 to complete the pressing of the hole position at the end of the valve and the end of the connecting shaft 15 to complete the sealing.

[0028] The water source is filled into the three detection areas inside the detection box 1 through the filling box 2 until the hole position at the top of the valve is submerged. The gas transmission box 8 transmits the detection gas, that is, transmits the detection gas into the valve for detection; when the valve is well sealed, no bubbles will appear in the three detection areas. When there is a sealing problem in one of the docking areas, bubbles will appear in the corresponding detection area, so as to complete the sealing detection of different docking hole positions of the valve; it should be noted that in this embodiment, the parts docked with each hole position of the valve, such as the end of the first docking part 11 and the end of the connecting shaft 15, can adopt the flange end plate that will be actually docked with the valve subsequently.

Claims

1. A portable valve air tightness testing device, comprising a testing box (1), characterized in that: The interior of the detection box (1) is divided into three detection areas by two partition plates (14), each area corresponding to the holes at both ends and the top of the valve; a docking mechanism (1) is respectively provided in the detection areas at both ends of the detection box (1) for docking with the holes at both ends of the valve; a mounting frame (6) is provided on the top of the detection box (1); a docking mechanism (2) is provided on the mounting frame (6) for docking with the holes at the top of the valve; the docking mechanism (2) comprises a partition plate (9) which is lifted and arranged on the mounting frame (6); a clamping docking mechanism is provided on the inner side of the partition plate (9) for fixing and Docking valve; a docking mechanism comprises a slide seat (5) slidably mounted on the outside of the detection box (1), the slide seat (5) is connected to a connecting shaft (15), a mounting ring (16) is fixedly connected to the connecting shaft (15), a clamping mechanism is arranged in an array on the mounting ring (16) for clamping the end of the connecting shaft (15) with the hole position of the end of the valve; the clamping mechanism comprises a mounting swivel seat (23) rotatably mounted on the circumference of the mounting ring (16), two clamping plates (25) are slidably mounted on the mounting swivel seat (23), and a pressure plate (27) is telescopically slidable on two end surfaces of the mounting ring (16); The second docking mechanism comprises a gas transmission box (8) and a lifting cylinder (7) arranged on a mounting frame (6), wherein the lifting cylinder (7) is used to control the movement of a partition plate (9); the clamping docking mechanism comprises a docking cylinder (10) arranged on the partition plate (9), wherein a docking portion (11) is arranged on a telescopic rod of the docking cylinder (10), wherein the docking portion (11) is connected to the bottom of the gas transmission box (8), and the docking portion (11) is connected to the hole at the top of the valve; The first partition plate (9) and the second partition plate (14) are respectively provided with grooves for locating the pipeline area of ​​the valve, and the first partition plate (9) and the second partition plate (14) are butted against each other to separate the three detection areas inside the detection box (1); The docking mechanism 1 comprises a control gear ring (18) rotatably mounted on a mounting ring (16); an incomplete meshing gear ring 1 (1801) is arranged on the inner side of the control gear ring (18); and an incomplete meshing gear ring 2 (1802) is arranged on the outer side of the control gear ring (18), which is used to drive the clamping mechanism; a control motor (19) is arranged on the circumference of the mounting ring (16); a control gear (17) is arranged on the output shaft of the control motor (19); and the control gear (17) meshes with the end face of the control gear ring (18).

2. A portable valve air tightness detection device according to claim 1, characterized in that: The partition plate 1 (9) is also provided with a fixed oil cylinder (12), and a clamping support portion (13) is provided on the telescopic rod of the fixed oil cylinder (12). The clamping support portion (13) is L-shaped, and the lateral end of the clamping support portion (13) is used to support the top hole of the valve.

3. A portable valve air tightness detection device according to claim 1, characterized in that: A filling box (2) is arranged on the side of the detection box (1), and the filling box (2) is respectively connected to the three detection areas inside the detection box (1) to transmit the detection water source; a motor (3) and a screw rod (4) are arranged on the outside of the detection box (1), and the motor (3) is used to drive the screw rod (4), and the screw rod (4) and the slide seat (5) on the docking mechanism (1) form a spiral pair.

4. A portable valve air tightness detection device according to claim 1, characterized in that: The clamping mechanism comprises a rotating shaft (20) rotatably mounted on a mounting ring (16), the two ends of the rotating shaft (20) are respectively connected to inclined columns (21), a connecting gear 1 (22) is arranged on the rotating shaft (20), a connecting gear 2 (24) is connected to the end surface of the mounting rotating seat (23), and a spring 1 (26) is connected between two clamping plates (25); an incomplete meshing gear ring 1 (1801) meshes with the connecting gear 2 (24) to drive the mounting rotating seat (23); and an incomplete meshing gear ring 2 (1802) meshes with the connecting gear 1 (22) to drive the inclined column (21).

5. A portable valve air tightness detection device according to claim 4, characterized in that: The clamping mechanism further comprises a contact portion (28) arranged on the pressure plate (27), the contact portion (28) being in contact with the oblique end surface of the inclined column (21), and a second spring (29) being connected between the pressure plate (27) and the end surface of the mounting ring (16); the ring gear (18) is controlled to rotate, the first incomplete meshing ring gear (1801) first meshes with the second connecting gear (24) to drive the mounting swivel seat (23) to rotate, so that the two clamping plates (25) are respectively located at the hole position at the end of the valve and at both sides of the end of the connecting shaft (15), the second incomplete meshing ring gear (1802) meshes with the first connecting gear (22) to drive the inclined column (21) to rotate, and the inclined column (21) pushes the contact portion (28) to control the pressure plate (27) to press the clamping plate (25).

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