Natural gas ball valve airtightness detection device

Abstract

The utility model discloses a natural gas ball valve airtightness detection device, which comprises a base, one side of the upper surface of the base is fixedly connected with a fixing plate, one side of the fixing plate is fixedly connected with a first mounting sleeve, and the inner wall of the first mounting sleeve is fixedly connected with a first insertion rod. A fixing mechanism is arranged on one side of the upper surface of the first inserting rod, and a ball valve body is inserted into one end of the first inserting rod. Through the arrangement of the pressure sensor, the first mounting sleeve and the second mounting sleeve, the interior of the ball valve body is inflated through the inflation mechanism, then whether numerical values on a display screen on the pressure sensor are changed or not is observed, and when the ball valve body leaks gas, the gas can be inflated into a closed space formed by the first mounting sleeve and the second mounting sleeve; therefore, the pressure intensity in the closed space is increased, the pressure is increased, the ball valve body leaks air, the air tightness of the ball valve body is detected, and the detection efficiency and precision are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detection device for a natural gas ball valve. Background Art

[0002] In the existing natural gas pipeline network, metal ball valves have been gradually replaced by polyethylene ball valves. Polyethylene ball valves have the advantages of light weight, corrosion resistance, and long life. As the on-off switch in the natural gas pipeline network, the natural gas ball valve has high requirements for air tightness. If natural gas leakage occurs during use, it will cause immeasurable harm. Therefore, the natural gas ball valve needs to be tested for sealing before leaving the factory.

[0003] At present, natural gas ball valve inspection often uses cylinders, jacks and other force-applying devices to clamp the two ends of the ball valve, then fill the inner cavity of the ball valve with air pressure and then put the ball valve into water to observe whether there are bubbles in the water. If bubbles are generated, the ball valve is leaking, otherwise the ball valve is qualified. However, the water immersion method for detecting air tightness is inefficient, inconvenient to observe, and inconvenient to use. Utility Model Content

[0004] In order to overcome the shortcoming of low efficiency of detecting the air tightness of ball valves by water immersion method in the prior art, one of the purposes of the utility model is to provide a natural gas ball valve air tightness detection device.

[0005] One of the purposes of the utility model is achieved by the following technical solution: a natural gas ball valve air tightness detection device, comprising a base: a fixed plate is fixedly connected to one side of the upper surface of the base, a first mounting sleeve is fixedly connected to one side of the fixing plate, a first plug rod is fixedly connected to the inner wall of the first mounting sleeve, a fixing mechanism is arranged on one side of the upper surface of the first plug rod, a ball valve body is plugged into one end of the first plug rod, and an inflation mechanism is fixedly connected to one side of the upper surface of the base close to the fixing plate; a slide groove is provided on one side of the upper surface of the base away from the fixing plate, a screw is rotatably connected to the inner wall of the slide groove, a movable plate is threadedly connected to the outer surface of the screw, a second mounting sleeve is fixedly connected to one side of the movable plate, and a pressure sensor is fixedly connected to one side of the upper surface of the second mounting sleeve. It is convenient to sense the pressure change between the first mounting sleeve and the second mounting sleeve through the pressure sensor, so as to detect whether the ball valve body is leaking, and the detection is accurate and convenient.

[0006] According to the gas tightness detection device for a natural gas ball valve, the inflation mechanism includes an air pump fixedly connected to one side of the upper surface of the base, a switch is installed on the upper surface of the air pump, an air inlet pipe is fixedly connected to one side of the air pump, a one-way valve is installed on one side of the air inlet pipe, the air inlet pipe runs through the fixed plate, the first installation sleeve and the first plug rod, and the air inlet pipe is fixedly connected to the fixed plate, the first installation sleeve and the first plug rod. It is convenient to inflate the interior of the ball valve body to detect its air tightness, and the one-way valve is set to prevent gas backflow from damaging the air pump.

[0007] According to the gas tightness detection device for a natural gas ball valve, the fixing mechanism includes a support plate fixedly connected to one side of the upper surface of the first plug rod, one side of the support plate is fixedly connected to a support rod, one side of the support rod is fixedly connected to a spring, the other end of the spring is movably connected to an adjustment plate, the lower side of the adjustment plate is fixedly connected to a second plug rod, one side of the adjustment plate is fixedly connected to a connecting plate, one side of the connecting plate is rotatably connected to a limiting block, and a limiting groove is provided on one side of the support plate close to the limiting block. It is convenient to limit and install the ball valve body, thereby facilitating the gas tightness detection.

[0008] According to the gas tightness detection device for a natural gas ball valve, the support rod passes through the adjustment plate and is movably connected to the adjustment plate, and the second insertion rod is plugged into the ball valve body, so as to facilitate the insertion and limiting of the ball valve body.

[0009] According to the gas tightness detection device for a natural gas ball valve, the screw rod passes through a side wall of the slideway and is rotatably connected to the slideway, and a knob is fixedly connected to one end of the screw rod. The knob is installed to facilitate the rotation of the screw rod.

[0010] According to the gas tightness detection device for a natural gas ball valve, a side of the second mounting sleeve close to the first mounting sleeve is fixedly connected to a mounting rod in a circular array, and a mounting hole is provided on a side of the first mounting sleeve close to the mounting rod. The first mounting sleeve and the second mounting sleeve are mounted via the mounting rod and the mounting hole, and the installation is more convenient by plugging.

[0011] According to the gas tightness detection device for a natural gas ball valve, the mounting rod coincides with the axis of the mounting hole, which is convenient for positioning and installation, and the positioning is quick and easy.

[0012] According to the gas tightness detection device for a natural gas ball valve, the number of the mounting rods and the number of the mounting holes are both four, which facilitates installation and improves installation firmness.

[0013] According to the gas tightness detection device for a natural gas ball valve, a transparent observation window is provided in the middle of the outer surface of one side of the second installation sleeve, so as to facilitate observation of the condition of the ball valve body.

[0014] According to the gas tightness detection device for a natural gas ball valve, an anti-skid pad is fixedly connected to the lower surface of the base, so as to increase the friction between the device and the ground, thereby playing an anti-skid role.

[0015] The above scheme has the following beneficial effects:

[0016] 1. Through the setting of the pressure sensor, the first mounting sleeve and the second mounting sleeve, the inside of the ball valve body is inflated through the inflation mechanism, and then the value on the display screen of the pressure sensor is observed to see whether there is any change. When the ball valve body leaks, the gas will be filled into the enclosed space composed of the first mounting sleeve and the second mounting sleeve, so that the pressure in the enclosed space will increase, and then the pressure will increase. If the ball valve body leaks, the air tightness of the ball valve body is detected, which effectively improves the detection efficiency and accuracy.

[0017] 2. Through the setting of the fixing mechanism, the insertion and disengagement of the second plug rod are controlled by locking and unlocking the spring, so that the ball valve body is limited, fixed and disassembled, which is convenient for limiting the fixing of the ball valve body, and the installation and disassembly of the ball valve body is more convenient, thereby improving the detection efficiency.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the overall structure of a natural gas ball valve air tightness detection device of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the internal section of a second mounting sleeve of a natural gas ball valve air tightness detection device of the utility model;

[0022] Figure 3 This is a structural schematic diagram of a fixing mechanism of a natural gas ball valve air tightness detection device of the utility model;

[0023] Figure 4 This is a structural schematic diagram of an air filling mechanism of a natural gas ball valve air tightness detection device of the utility model;

[0024] Figure 5 The utility model is a schematic structural diagram of a mounting rod of a gas tightness detection device for a natural gas ball valve.

[0025] Legend:

[0026] 1. Base; 2. Fixing plate; 3. First mounting sleeve; 4. First plug rod; 5. Fixing mechanism; 501. Support plate; 502. Support rod; 503. Spring; 504. Adjusting plate; 505. Second plug rod; 506. Connecting plate; 507. Limiting block; 508. Limiting groove; 6. Ball valve body; 7. Inflating mechanism; 701. Air pump; 702. Switch; 703. Inlet pipe; 704. One-way valve; 8. Slide groove; 9. Screw; 10. Moving plate; 11. Second mounting sleeve; 12. Pressure sensor; 13. Knob; 14. Mounting rod; 15. Mounting hole; 16. Transparent observation window; 17. Anti-slip mat. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0028] Reference Figure 1-5A gas tightness detection device for a natural gas ball valve comprises a base 1: a fixed plate 2 is fixedly connected to one side of the upper surface of the base 1, a first installation sleeve 3 is fixedly connected to one side of the fixed plate 2, a first plug rod 4 is fixedly connected to the inner wall of the first installation sleeve 3, a fixing mechanism 5 is arranged on one side of the upper surface of the first plug rod 4, a ball valve body 6 is plugged into one end of the first plug rod 4, an inflation mechanism 7 is fixedly connected to one side of the upper surface of the base 1 close to the fixed plate 2, a slide groove 8 is provided on one side of the upper surface of the base 1 away from the fixed plate 2, a screw rod 9 is rotatably connected to the inner wall of the slide groove 8, and a movable screw rod 9 is threadedly connected to the outer surface of the screw rod 9 Plate 10, one side of the movable plate 10 is fixedly connected with the second mounting sleeve 11, one side of the upper surface of the second mounting sleeve 11 is fixedly connected with the pressure sensor 12, the inflation mechanism 7 includes an air pump 701 fixedly connected to one side of the upper surface of the base 1, a switch 702 is installed on the upper surface of the air pump 701, one side of the air pump 701 is fixedly connected with an air intake pipe 703, one side of the air intake pipe 703 is installed with a one-way valve 704, the air intake pipe 703 runs through the fixed plate 2, the first mounting sleeve 3 and the first plug 4, and the air intake pipe 703 is fixedly connected to the fixed plate 2, the first mounting sleeve 3 and the first plug 4. The fixing mechanism 5 includes a support plate 501 fixedly connected to one side of the upper surface of the first plug rod 4, one side of the support plate 501 is fixedly connected to a support rod 502, one side of the support rod 502 is fixedly connected to a spring 503, the other end of the spring 503 is movably connected to an adjustment plate 504, the lower side of the adjustment plate 504 is fixedly connected to a second plug rod 505, one side of the adjustment plate 504 is fixedly connected to a connecting plate 506, one side of the connecting plate 506 is rotatably connected to a limiting block 507, a limiting groove 508 is provided on the side of the support plate 501 close to the limiting block 507, and the support rod 502 is fixedly connected to a spring 503. The other end of the spring 503 is movably connected to an adjustment plate 504, and the lower side of the adjustment plate 504 is fixedly connected to a second plug rod 505. The adjusting plate 504 is fixedly connected to a connecting plate 506. One side of the connecting plate 506 is rotatably connected to a limiting block 507. A limiting groove 508 is provided on the side of the support plate 501 close to the limiting block 507. It passes through the adjustment plate 504 and is movably connected to the adjustment plate 504, the second plug rod 505 is plugged into the ball valve body 6, the screw rod 9 passes through one side wall of the slide groove 8 and is rotatably connected to the slide groove 8, one end of the screw rod 9 is fixedly connected to the knob 13, the second mounting sleeve 11 is fixedly connected to the mounting rod 14 in a circular array on the side close to the first mounting sleeve 3, and the first mounting sleeve 3 is provided with a mounting hole 15 on the side close to the mounting rod 14, the axial center lines of the mounting rod 14 and the mounting hole 15 coincide with each other, and the number of the mounting rods 14 and the mounting holes 15 can be four, six or eight.When it is necessary to perform an airtightness test on the ball valve body 6, rotate the knob 13 to drive the screw rod 9 to rotate. The screw rod 9 drives the moving plate 10 to move away from the fixed plate 2 along the inner wall of the chute 8, thereby driving the mounting rod 14 out of the mounting hole 15. The second mounting sleeve 11 is no longer mounted on the first mounting sleeve 3. Rotate the limiting block 507 to be horizontal with the limiting groove 508. Thus, the spring 503 extends to drive the limiting block 507 through the limiting groove 508 and no longer limits the position of the second insertion rod 505. Then, install the ball valve body 6 on the first insertion rod 4. Pull the connecting plate 506 to drive the limiting block 507 through the limiting groove 508. At the same time, the second insertion rod 505 is inserted into the inner wall of the ball valve body 6. Rotate the limiting block 507 to limit the position of the second insertion rod 505, thereby fixing the ball valve body 6. Then, rotate the knob 13 to drive the screw rod 9 to rotate, thereby driving the moving plate 10 to return to its original position. The second mounting sleeve 11 is mounted on the first mounting sleeve 3. Rotate the switch 702 to start the air pump 701 and inflate the inside of the ball valve body 6 through the air inlet pipe 703. After the inflation is completed, observe whether the value on the display screen of the pressure sensor 12 changes. If there is a change, the ball valve body 6 leaks air (when the ball valve body 6 leaks air, the gas will fill the closed space formed by the first mounting sleeve 3 and the second mounting sleeve 11, so the pressure in the closed space will increase, leading to an increase in pressure). Thus, it is convenient to detect the airtightness of the ball valve body 6 and improves the detection efficiency and accuracy.

[0029] A transparent observation window 16 is provided in the middle of the outer surface of one side of the second mounting sleeve 11. The lower surface of the base 1 is fixedly connected with an anti-slip pad 17. Installing the transparent observation window 16 facilitates observing the situation of the ball valve body 6. Installing the anti-slip pad 17 can increase the friction force of the bottom surface of the device, thereby improving the stability of the device.

[0030] Working principle: when the air tightness test of the ball valve body 6 is required, the knob 13 is turned to drive the screw 9 to rotate, and the screw 9 drives the movable plate 10 to move on the inner wall of the slide groove 8 to the side away from the fixed plate 2, thereby driving the mounting rod 14 to disengage from the mounting hole 15, and the second mounting sleeve 11 is no longer installed with the first mounting sleeve 3, and the limit block 507 is rotated to be level with the limit groove 508, so that the spring 503 extends to drive the limit block 507 to pass through the limit groove 508 and no longer limit the position of the second plug rod 505, and then the ball valve body 6 is installed on the first plug rod 4, and the connecting plate 506 is pulled to drive the limit block 507 to pass through the limit groove 508. At the same time, the second plug rod 505 is plugged into the inner wall of the ball valve body 6, and the limit block 507 is rotated to limit the second plug rod 505. The second plug rod 505 is positioned to fix the ball valve body 6, and then the knob 13 is turned to drive the screw 9 to rotate, thereby driving the movable plate 10 to return to its position. The second mounting sleeve 11 is installed with the first mounting sleeve 3, and the rotary switch 702 starts the air pump 701 and inflates the ball valve body 6 through the air inlet pipe 703. After the inflating is completed, observe whether the value on the display screen of the pressure sensor 12 changes. If there is a change, the ball valve body 6 is leaking (when the ball valve body 6 leaks, the gas will be filled into the enclosed space formed by the first mounting sleeve 3 and the second mounting sleeve 11, so that the pressure in the enclosed space will increase and then cause the pressure to increase), so as to facilitate the detection of the air tightness of the ball valve body 6 and improve the detection efficiency and accuracy.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A natural gas ball valve air tightness detection device, characterized in that: The invention comprises a base (1): a fixing plate (2) is fixedly connected to one side of the upper surface of the base (1); a first mounting sleeve (3) is fixedly connected to one side of the fixing plate (2); a first insertion rod (4) is fixedly connected to the inner wall of the first mounting sleeve (3); a fixing mechanism (5) is provided on one side of the upper surface of the first insertion rod (4); a ball valve body (6) is inserted into one end of the first insertion rod (4); and an inflation mechanism (7) is fixedly connected to one side of the upper surface of the base (1) close to the fixing plate (2); A slide groove (8) is provided on a side of the upper surface of the base (1) away from the fixed plate (2); a screw rod (9) is rotatably connected to the inner wall of the slide groove (8); a movable plate (10) is threadedly connected to the outer surface of the screw rod (9); a second mounting sleeve (11) is fixedly connected to one side of the movable plate (10); and a pressure sensor (12) is fixedly connected to one side of the upper surface of the second mounting sleeve (11).

2. A natural gas ball valve air tightness detection device according to claim 1, characterized in that: The inflation mechanism (7) comprises an air pump (701) fixedly connected to one side of the upper surface of the base (1); a switch (702) is installed on the upper surface of the air pump (701); an air intake pipe (703) is fixedly connected to one side of the air pump (701); a one-way valve (704) is installed on one side of the air intake pipe (703); the air intake pipe (703) passes through the fixing plate (2), the first mounting sleeve (3) and the first insertion rod (4); and the air intake pipe (703) is fixedly connected to the fixing plate (2), the first mounting sleeve (3) and the first insertion rod (4).

3. A natural gas ball valve air tightness detection device according to claim 1, characterized in that: The fixing mechanism (5) comprises a support plate (501) fixedly connected to one side of the upper surface of the first insertion rod (4); one side of the support plate (501) is fixedly connected to a support rod (502); one side of the support rod (502) is fixedly connected to a spring (503); the other end of the spring (503) is movably connected to an adjustment plate (504); a lower side of the adjustment plate (504) is fixedly connected to a second insertion rod (505); one side of the adjustment plate (504) is fixedly connected to a connecting plate (506); one side of the connecting plate (506) is rotatably connected to a limiting block (507); and a limiting groove (508) is provided on a side of the support plate (501) close to the limiting block (507).

4. A natural gas ball valve air tightness detection device according to claim 3, characterized in that: The support rod (502) passes through the adjustment plate (504) and is movably connected to the adjustment plate (504), and the second insertion rod (505) is plugged into the ball valve body (6).

5. The gas tightness detection device for a natural gas ball valve according to claim 1, characterized in that: The screw rod (9) passes through a side wall of the slide groove (8) and is rotationally connected to the slide groove (8); one end of the screw rod (9) is fixedly connected to a knob (13).

6. The gas tightness detection device for a natural gas ball valve according to claim 1, characterized in that: A side of the second mounting sleeve (11) close to the first mounting sleeve (3) is fixedly connected to a mounting rod (14) in a circular array, and a side of the first mounting sleeve (3) close to the mounting rod (14) is provided with a mounting hole (15).

7. A natural gas ball valve air tightness detection device according to claim 6, characterized in that: The axis lines of the mounting rod (14) and the mounting hole (15) coincide with each other.

8. The gas tightness detection device for a natural gas ball valve according to claim 6, characterized in that: The number of the mounting rods (14) and the number of the mounting holes (15) are both four.

9. The gas tightness detection device for a natural gas ball valve according to claim 1, characterized in that: A transparent observation window (16) is provided in the middle of an outer surface of one side of the second installation sleeve (11).

10. The gas tightness detection device for a natural gas ball valve according to claim 1, characterized in that: An anti-slip pad (17) is fixedly connected to the lower surface of the base (1).

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