JP6990806B1 - Welded tee pipe airtightness inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an airtightness inspection device for a welded tee pipe. SOLUTION: A housing 1, a closing component 5, and a ventilation component 7 are included, a gas storage box 2 is fixedly provided in the housing, and a water storage groove 3 is formed at an intermediate position of the housing. A control panel 101 is installed at the upper end edge of the housing, the gas storage box is installed at the upper end edge of the housing, and the gas storage box is connected to the first connecting gas pipe 201. The second connecting gas pipe 202, the third connecting gas pipe 203, and the fourth connecting gas pipe 204 are connected, and an electromagnetic tension rod is installed at the lower end of the water storage groove, and the electromagnetic tension rod and the water storage groove are connected to each other. A seal ring is installed in the portion, a mounting base plate 4 is fixedly provided at one end of the electromagnetic tension rod, the closing component is installed on the mounting base plate, and a positioning pinch is held at the upper end of the mounting base plate. The component 6 is provided. [Selection diagram] Fig. 1

Description

The present invention belongs to the field of airtightness inspection technology, and specifically relates to an airtightness inspection device for a welded tee pipe.

Many tea pipes are made by welding two pipes to form an angle, but in order to ensure the airtightness of the weld seam of the tea pipe, the weld seam of the tea pipe after welding is used. On the other hand, it is necessary to perform an airtightness test. When performing an airtightness test, it is necessary to first close the two pipe openings, pour gas through the remaining one pipe opening, and then put the welded tee pipe into the water to check for air bubbles from the weld seam. be. If no air bubbles are generated, it means that the welding effect and airtightness are good, while if bubbles are generated in the weld seam, it means that the welding effect and airtightness of the tea pipe are insufficient. .. When welding tee pipes, it is necessary to form a constant angle between the two pipes, depending on the actual manufacturing requirements. When performing an airtightness test on different types of tea pipes, it is necessary to close the two pipe openings with different jigs because the angles are different. Replacing the jig is very troublesome, and in actual operation, there is an eccentricity error between the outer tube and the inner diameter during the manufacturing process, and this eccentricity error is within the error range of the actual mounting. If it is closed during the airtightness inspection, it will damage the threads in the pipe and affect the quality of the product. Further, it is necessary to inspect the airtightness with different external pressures, but in the prior art, there is no device capable of inspecting the airtightness of the welded tee pipe with different external pressures, so improvement is required.

China Utility Model Publication No. 208187645

An object of the present invention is to provide an airtightness inspection device for a welded tee pipe in order to solve the above technical problems.

An airtightness inspection device for welded tee pipes, including a housing, a closing part, and a ventilation part. A gas storage box is fixedly provided in the housing, and water is stored in an intermediate position of the housing. A groove is formed, a control panel is installed at the upper end edge of the housing, the gas storage box is installed at the upper end edge of the housing, and the first connecting gas pipe is installed in the gas storage box. The second connecting gas pipe, the third connecting gas pipe, and the fourth connecting gas pipe are connected to each other, and an electromagnetic strut rod is installed at the lower end of the water storage groove, and the electromagnetic strut rod and the water storage groove are connected to each other. A seal ring is installed, a mounting base plate is fixedly provided at one end of the electromagnetic tension rod, the closing component is installed on the mounting base plate, and a positioning holding component is provided at the upper end of the mounting base plate. The venting component is connected to the gas storage box via the first connecting gas pipe and the second connecting gas pipe, and the closing component connects the fourth connecting gas pipe and the third connecting gas pipe. Connected to the gas storage box via
The airtightness inspection device can perform airtightness inspection on welded tee pipes of different lots, eliminates the need to replace jigs, reduces the labor strength of workers, and improves the efficiency of airtightness inspection on welded tee pipes. The closed parts are easy to adjust, the structure is simple, and by providing an electromagnetic telescopic rod, the welded tee pipe can be inspected for airtightness at different water pressures, which is highly practical.

Further, the control panel is communicated with a controller inside the housing, a plurality of solenoid valves are installed inside the gas storage box, and the plurality of solenoid valves are the first connecting gas pipe and the gas, respectively. A plurality of the solenoids provided fixedly to the connecting portion with the storage box, the connecting portion between the second connecting gas pipe and the gas storage box, and the connecting portion between the third connecting gas pipe and the gas storage box. All the valves are communicated and connected to the controller, and the solenoid tension rod is communicated and connected to the controller.

Further, the positioning holding component includes a positioning connecting plate and a positioning connecting pipe, the positioning connecting plate is fixedly provided at the upper end of the mounting base plate, and the positioning connecting pipe is fixed to the upper end of the positioning connecting plate. A plurality of positioning connecting grooves are formed inside the positioning connecting tube, the opening of the positioning connecting groove is provided facing the central axis of the positioning connecting tube, and the lower end of the positioning connecting groove is provided. A sliding rod is installed, a bow-shaped holding plate is fixedly provided at the other end of the sliding rod, a connecting spring is attached to the sliding rod, and one end of the connecting spring is the lower end of the positioning connecting groove. The other end of the connecting spring is fixedly provided to the bow-shaped holding plate.

Further, connecting columns are fixedly provided on both horizontal sides along the radial direction on the outer wall of the positioning connecting tube, and the axial direction of the connecting columns is the same as the axial direction of the positioning connecting tube. Rotating impellers are connected to the opposite sides of the connecting column so that they can rotate.

Further, the closing component includes a bow-shaped fixing base, a bow-shaped sliding block, and a closing connecting rod, a bow-shaped sliding groove is formed on the end face of the bow-shaped fixing base, and the outer wall of the bow-shaped fixing base is first. A bow-shaped stroke groove is formed, a second bow-shaped stroke groove is formed on the inner wall surface of the bow-shaped fixing base, and both the first bow-shaped stroke groove and the second bow-shaped stroke groove are communicated with the bow-shaped sliding groove. , The bow-shaped sliding block is provided so as to be slidable in the bow-shaped sliding groove, two bow-shaped sliding blocks are provided, and each of them can independently slide with respect to each other in the bow-shaped sliding groove, and the bow-shaped sliding block is provided. A screw hole is formed at the center position of the sliding block, a screw sleeve is screwed into the bow-shaped sliding block, and the screw sleeve is provided so as to penetrate the first bow-shaped stroke groove, and the screw sleeve and the screw sleeve are provided. A seat is externally attached to the outer wall of the bow-shaped fixing base, the closing connecting rod is slidably provided in the screw sleeve, an air supply pipe is provided in the closing connecting rod, and the closing connecting rod is provided. Is provided extending from the outside of the bow-shaped fixing base to the inside of the bow-shaped fixing base, and the first closing airbag is attached to the end of the closing connecting rod located inside the bow-shaped fixing base, and the closing is provided. An air supply hole is formed in the connecting portion between the connecting rod and the first closing airbag, and the air supply hole is provided so as to communicate with the air supply pipe, and is located outside the bow-shaped fixing base in the closing connecting rod. An air supply joint is connected to the end of the air supply joint, the other end of the air supply joint is connected to the fourth connecting gas pipe, the fourth connecting gas pipe is a branch pipe in the third connecting gas pipe, and the first (4) A boost valve is installed on the connecting gas pipe.

Further, the air supply joint is screwed with the closing connecting rod, and a sealing bandage is wrapped around the connecting portion between the air supply joint and the closing connecting rod.

Further, the ventilation component includes a ventilation connector and a second closing airbag, the ventilation connector is connected to the first connecting gas pipe, the second closing airbag is exteriorized by the ventilation connector, and the second is said. The closing airbag is connected to the second connecting gas pipe.

The gas stored in the gas storage box is nitrogen gas having a concentration of 99.9%, and the airtightness of the welded tea pipe is inspected by the nitrogen gas. Nitrogen is the largest amount of gas contained in air, has a stable shape, is non-toxic and non-corrosive, so it does not corrode equipment, does not damage welded tee pipes, and is airtight. The practicality of the inspection device is improved.

Bow-shaped fixing base, bow-shaped sliding block, closing connecting rod, bow-shaped sliding groove, first bow-shaped stroke groove, second bow-shaped stroke groove, screw sleeve, washer, air supply pipe, first closing airbag, air supply hole, and air supply By providing a joint, when there is an eccentricity error between the outer pipe body and the inner wall, the closing connecting rod does not hit the thread in the pipe and damage the thread, and the welded tee pipe can be used during the airtightness inspection. Breakage is avoided, the defective rate of the product is reduced, the cost of the company is suppressed, the practicality of the airtightness inspection device is improved, the welded tee pipe of different lots can be accommodated, and the versatility of the airtightness inspection device is increased. be able to.
By providing the positioning connecting plate, the positioning connecting gas pipe, the positioning connecting groove, the sliding rod, the bow-shaped holding plate, the connecting support, and the rotary impeller, the worker can clearly observe using the airtightness inspection device. The inspection effect of the airtightness inspection on the welded tee pipe can be improved, and the practicality of the airtightness inspection apparatus can be improved.

By providing the positioning connecting plate, the positioning connecting gas pipe, the positioning connecting groove, the sliding rod, the bow-shaped holding plate, the connecting support, and the rotary impeller, the worker can clearly observe using the airtightness inspection device. The inspection effect of the airtightness inspection on the welded tee pipe can be improved, and the practicality of the airtightness inspection apparatus can be improved.

Each direction described in the present application is a direction when the device is viewed in the same direction as in FIG.
Isometric view of the airtightness inspection device Top view of the airtightness inspection device Sectional drawing along the line AA of FIG. Enlarged view of B in FIG. Enlarged view of C in FIG. Isometric view of the closing parts in the airtightness inspection device Top view of the closing part in the airtightness inspection device Enlarged view of D in FIG. Sectional drawing along the line EE of FIG. Schematic diagram of the structure of the welded tee pipe in the embodiment of the airtightness inspection device. Schematic diagram of the configuration of another type of welded tee pipe in the embodiment of the airtightness inspection device.

As shown in FIGS. 1 to 3, it is an airtightness inspection device for a welded tee pipe, including a housing 1, a closing component 5, and a ventilation component 7, and a gas storage box 2 is fixed to the housing 1. A water storage groove 3 is formed at an intermediate position of the housing 1, a control panel 101 is installed at the edge of the upper end of the housing 1, and a control panel 101 is installed at the edge of the upper end of the housing 1. The gas storage box 2 is installed, and the first connecting gas pipe 201, the second connecting gas pipe 202, the third connecting gas pipe 203, and the fourth connecting gas pipe 204 are connected to the gas storage box 2, and the water storage box 2 is installed. An electromagnetic tension rod 8 is installed at the lower end of the groove 3, a seal ring 801 is installed at a connecting portion between the electromagnetic tension rod 8 and the water storage groove 3, and a mounting base plate 4 is installed at one end of the electromagnetic tension rod 8. Is fixedly provided, the closing component 5 is installed on the mounting base plate 4, a positioning holding component 6 is provided at the upper end of the mounting base plate 4, and the ventilation component 7 is the first connecting gas pipe 201. And the gas storage box 2 are connected to the gas storage box 2 via the second connecting gas pipe 202, and the closing component 5 is connected to the gas storage box 2 via the fourth connecting gas pipe 204 and the third connecting gas pipe 203. When attempting to perform an airtightness test on a welded tee pipe, the closing part 5 can be used to close two pipe openings in the welded tee pipe by simply adjusting the closing part 5. The main pipe is sandwiched by the positioning sandwiching component 6, the other pipe opening of the welded tee pipe is closed by the ventilation component 7, and the switch on the control panel 101 is pressed to operate the electromagnetic tension rod 8 to operate the welded tee pipe. It is located inside the water storage groove 3 and the airtightness test is performed on the welded tee pipe. Since the stroke of the electromagnetic telescopic rod 8 is adjustable, the airtightness on the welded tee pipe is different. Since the inspection can be performed and the closing component 5 is adjustable, the versatility of the airtightness inspection device can be improved and the practicality of the airtightness inspection device can be improved.

Further, the control panel 101 is communicatively connected to the controller inside the housing 1, a plurality of electromagnetic valves are installed inside the gas storage box 2, and the plurality of electromagnetic valves are each connected to the first connecting gas pipe. Fixed to the connecting portion between 201 and the gas storage box 2, the connecting portion between the second connecting gas pipe 202 and the gas storage box 2, and the connecting portion between the third connecting gas pipe 203 and the gas storage box 2. The plurality of the electromagnetic valves are all communicated and connected to the controller, the electromagnetic tension rod 8 is communicated and connected to the controller, and the worker fixes the welded tee pipe to be inspected and then the control panel. The airtightness inspection device can be used by simply pressing the switch on the 101, improving the degree of automation and practicality of the airtightness inspection device, and also using the first connecting gas pipe 201 and the gas storage box 2. The electromagnetic valve is installed in each of the connecting portion of the second connecting gas pipe 202 and the connecting portion of the gas storage box 2, and the connecting portion of the third connecting gas pipe 203 and the gas storage box 2. Therefore, each connected gas pipe is independent of each other, and each component connected to each connected gas pipe operates independently in the process of use. Therefore, the control panel 101 can independently ventilate each component and gas. It is possible to suppress waste, reduce the cost, and improve the practicality of the airtightness inspection device.

Further, as shown in FIG. 4, the positioning holding component 6 includes a positioning connecting plate 601 and a positioning connecting pipe 602, and the positioning connecting plate 601 is fixedly provided at the upper end of the mounting base plate 4 and is provided. The positioning connecting pipe 602 is fixedly provided at the upper end of the positioning connecting plate 601. A plurality of positioning connecting grooves 607 are formed inside the positioning connecting pipe 602, and the opening of the positioning connecting groove 607 is the positioning connecting pipe. A sliding rod 605 is installed at the lower end of the positioning connecting groove 607, and a bow-shaped holding plate 606 is fixedly provided at the other end of the sliding rod 605 so as to face the central axis of the 602. A connecting spring is attached to the moving rod 605, one end of the connecting spring is fixedly provided to the lower end of the positioning connecting groove 607, and the other end of the connecting spring is fixedly provided to the bow-shaped holding plate 606. Since the sliding rod 605 and the connecting spring are connected to the rear end of the bow-shaped holding plate 606, the bow-shaped holding plate 606 has flexibility, and the bow-shaped holding plate 606 has a welded tee pipe having a different outer diameter. It can be pinched, which allows the airtightness inspection device to perform airtightness inspection on welded tee pipes of different lots, increasing the versatility of the airtightness inspection device and increasing the practicality of the airtightness inspection device. be able to.

Further, as shown in FIG. 4, connecting columns 603 are fixedly provided on both horizontal sides along the radial direction on the outer wall of the positioning connecting tube 602, and the axial direction of the connecting column 603 is the positioning connecting tube 602. It is the same as the axial direction of, and the rotary impeller 604 is connected to the opposite sides of the two connecting columns 603 so that they can rotate, causing problems such as tunnel solder and air bubbles in the welded part, and airtightness. If the air bubbles are small or the air bubbles are not continuously discharged from the water surface during the inspection process, it is easy for the worker to make a misjudgment, and the effect of the airtightness inspection on the welded tee pipe is affected. When the airtightness of the tea pipe is insufficient, gas overflows from the welded portion, and the overflowed gas rotates the rotary impeller 604 to generate bubbles in the water in the water storage groove 3, and the worker is intuitive. The air bubbles adhering to the welded portion are discharged at a high speed by the rotation of the rotary impeller 604, which can be clearly observed by the worker, and the inspection effect of the airtightness inspection of the welded tee pipe is improved. Increase the practicality of the airtightness inspection device.

Further, as shown in FIGS. 6 to 9, the closing component 5 includes a bow-shaped fixing base 501, a bow-shaped sliding block 505, and a closing connecting rod 506, and the end surface of the bow-shaped fixing base 501 has a bow-shaped sliding groove 502. Is formed, a first bow-shaped stroke groove 503 is formed on the outer wall of the bow-shaped fixing base 501, a second bow-shaped stroke groove 504 is formed on the inner side wall of the bow-shaped fixing base 501, and the first bow-shaped stroke groove 504 is formed. Both the 503 and the second bow-shaped stroke groove 504 are communicated with the bow-shaped sliding groove 502, and the bow-shaped sliding block 505 is provided so as to be slidable on the bow-shaped sliding groove 502. Two 505s are provided and each can slide independently with respect to each other in the bow-shaped sliding groove 502, a screw hole is formed at the center position of the bow-shaped sliding block 505, and a screw is formed in the bow-shaped sliding block 505. A sleeve 509 is screwed in, the screw sleeve 509 is provided so as to penetrate the first bow-shaped stroke groove 503, and a seat 510 is externally provided between the screw sleeve 509 and the outer wall of the bow-shaped fixing base 501. The closing connecting rod 506 is slidably provided in the screw sleeve 509, an air supply pipe 5061 is provided in the closing connecting rod 506, and the closing connecting rod 506 is formed from the outside of the bow-shaped fixing base 501 to the bow shape. The first closing airbag 508 is externally provided at the end of the closing connecting rod 506 extending inside the fixing base 501 and located inside the bow-shaped fixing base 501, and the closing connecting rod 506 and the first closing connecting rod 506. An air supply hole 5062 is formed at a connecting portion with the one-blocking airbag 508, and the air supply hole 5062 is provided in communication with the air supply pipe 5061. An air supply joint 507 is connected to the positioned end, the other end of the air supply joint 507 is connected to the fourth connecting gas pipe 204, and the fourth connecting gas pipe 204 is in the third connecting gas pipe 203. A pressure boosting valve 205 is installed in the fourth connecting gas pipe 204, which is a branch pipe, and one end of the screw sleeve 509 is hexagonal.
In the process of use, when attempting to perform a sealability test on welded tee pipes of different lots (different values of the angle θ as shown in FIGS. 10 to 11), the screw sleeve 509 is turned with a wrench. The bow-shaped sliding block 505 is made slidable, and the relative positions of the two bow-shaped sliding blocks 505 are adjusted so that the first bow-shaped stroke groove 502 and the second bow-shaped stroke groove 502 are formed on both side walls of the bow-shaped fixing base 501, respectively. By providing the stroke groove 503, when the relative position of the bow-shaped sliding block 505 is adjusted, the closing connecting rod 506 and the screw sleeve 509 can move along with the bow-shaped sliding block 505, and the bow-shaped sliding block 505 can be moved. The closing connecting rod 506 is made to face the axis of the pipe opening of the welded tee pipe without hindering the movement of the screw sleeve, and the screw sleeve 509 is turned again with a wrench to fix the bow-shaped sliding block 505. Since the seat 510 is installed between the 509 and the bow-shaped fixing base 501 and the end surface of the seat 510 in the vicinity of the bow-shaped fixing base 501 forms a bow-shaped surface, the service life of the seat 510 is extended. The service life of the airtightness inspection device is extended, the tensile yield strength of the seat 510 is improved, the clamping force of the bow-shaped sliding block 505 is improved, and the bow-shaped sliding block 505 can slide relative to the natural state. This makes it possible to handle welded tee pipes of the same lot by adjusting the airtightness inspection device once when replacing welded tee pipes of different lots, which is easy to operate and the airtightness inspection device. Improve the practicality of
Further, since the closing connecting rod 506 can slide in the screw sleeve 509, there is no interference when closing the welded tee pipe as shown in FIGS. 10 to 11, and if the closing connecting rod 506 is fixed, the closing connecting rod 506 is fixed. When provided, the two pipe openings in the welded tee pipe interfere with each other, and the closing connecting rod 506 and the first closing airbag 508 cannot completely close the two pipe openings in the welded tee pipe. Increasing the feasibility of the airtightness inspection device and increasing the practicality of the airtightness inspection device, such a design makes the welding tee even if the two pipe openings in the welding tee pipe are not located on the same circumferential surface. It is possible to close two pipe openings in a pipe, increasing the versatility of the airtightness inspection device.

In addition, since the welded tee pipe has an eccentricity error between the outer pipe body and the inner diameter during manufacturing, the conventional closing joint damages the internal threads when closing the welded tee pipe and completely closes the welded tee pipe. In order to solve this problem, the first closing airbag 508 is attached to one end of the closing connecting rod 506 in the airtightness inspection device. The air supply joint 507 is screwed to the other end of the closing connecting rod 506, and the air supply joint 507 is connected to the gas storage box 2 by the fourth connecting gas pipe 204 and the third connecting gas pipe 203. With such a design, when closing two pipe openings in a welded tee pipe, the gas in the gas storage box 2 can be removed by simply pressing the start switch of the electromagnetic valve corresponding to the pipe openings in the control panel 101. After entering the fourth connecting gas pipe 204 from the third connecting gas pipe 203, the air supply joint 507 flows into the air supply pipe 5061, and the air supply port 5062 enters the first closing air bag 508. The first closing airbag 508 is inflated, and the expansion of the first closing airbag 508 closes the two pipe openings of the welded tee pipe without damaging the threads provided at the pipe openings of the welded tee pipe. The one-blocking airbag 508 can be fitted into the outer diameter of the screw to increase the closing effect on the pipe opening, and when the first closing airbag 508 expands, the welded tee pipe and the closing connecting rod 506 self-use. The airtightness is improved by locking, preventing the welded tee pipe from moving relative to each other, improving the closing effect on the pipe opening, improving the airtightness inspection effect on the welded tee pipe, and providing the first closing airbag 508. The inspection device can close welded tee pipes with different inner diameters, further increasing the versatility of the airtightness inspection device, and in this embodiment, the pipe mouth of the welded tee pipe is a circular threaded inner hole, but welding is performed. The inner hole of the tee pipe is not limited to a circular shape, but may have an arbitrary shape such as a rectangular shape or a triangular shape. The airtightness can be inspected in the inner hole of the welded tee pipe of the above, further increasing the versatility of the airtightness inspection device.

Further, since the pressure boosting valve 205 is provided in the third connecting gas pipe 203, when the first connecting gas pipe 201 ventilates the ventilation component 7 in the process of performing the airtightness inspection, the ventilation component 7 is used. The discharged gas does not push out the closing connecting rod 506, and the problem that the first closing airbag 508 does not block the two mouths of the welded tee pipe is avoided, and the practicality of the airtightness inspection device is improved.

Further, since the air supply joint 507 is screwed with the closing connecting rod 506 and a sealing bandage is wound around the connecting portion between the air supply joint 507 and the closing connecting rod 506, the air supply joint 507 and the said The sealing performance of the connecting portion with the closing connecting rod 506 is improved, the normal operation of the first closing airbag 508 is ensured, and between the air supply joint 507 and the closing connecting rod 506 during a long working process. Problems that cause looseness and affect the effectiveness of the airtightness test are avoided, and the test results are made more accurate.

Further, as shown in FIGS. 1, 2 and 5, the ventilation component 7 includes a ventilation connector 701 and a second closing airbag 702, and the ventilation connector 701 is connected to the first connecting gas pipe 201. The second closing airbag 702 is externally attached to the ventilation connector 701, and the second closing airbag 702 is connected to the second connecting gas pipe 202, whereby the ventilation connector 701 and the second closing airbag 702 are connected. Can work independently of each other, and when performing an airtightness test on a welded tee pipe, it is necessary to close the pipe opening and put the welded tee pipe into water before performing an airtightness test by ventilating. The second closing airbag 702 is connected to the ventilation connector 701, but the gas passages between the second closing airbag 702 and the ventilation connector 701 need to be independent of each other, thereby reducing the waste of gas and the above. Since the practicality of the airtightness inspection device can be improved and the operating principle of the second closing airbag 702 is the same as the operating principle of the first closing airbag 508, it will not be described here.

The gas stored in the gas storage box 2 is a nitrogen gas having a concentration of 99.9%, and the airtightness of the welded tea pipe is inspected by the nitrogen gas. Nitrogen is the largest amount of gas contained in the air. Since it has a stable shape, is non-toxic, and is non-corrosive, it does not corrode the equipment, does not damage the welded tee pipe, and improves the practicality of the airtightness inspection device.

Those skilled in the art can make various changes according to the working method within the scope of the present invention.

1 Housing 5 Closing parts 7 Ventilation parts 2 Gas storage box
3 Water storage groove 101 Control panel 201 1st connecting gas pipe 202 2nd connecting gas pipe 203 3rd connecting gas pipe 204 4th connecting gas pipe 8 Electromagnetic tension rod 801 Seal ring 4 Mounting base plate 6 Positioning holding parts 601 Positioning connecting plate 602 Positioning connecting pipe 607 Positioning connecting groove 605 Sliding rod 606 Bow-shaped holding plate 603 Connecting column 604 Rotating impeller 501 Bow-shaped fixing base 505 Bow-shaped sliding block 506 Closing connecting rod 502 Bow-shaped sliding groove 503 First bow-shaped stroke groove 504 Second bow-shaped Strike groove 509 Thread sleeve 510 Seat 5061 Air supply pipe 508 First closing air bag 5062 Air supply hole 507 Air supply joint 205 Booster valve 701 Ventilation connector 702 Second closing air bag

Claims (4)

It is an airtightness inspection device for welded tee pipes.
The housing (1), the closing part (5), and the ventilation part (7) are included.
A gas storage box (2) is fixedly provided in the housing (1).
A water storage groove (3) is formed at an intermediate position of the housing (1).
A control panel (101) is installed at the upper end edge of the housing (1).
The gas storage box (2) is installed at the upper end edge of the housing (1).
The first connecting gas pipe (201), the second connecting gas pipe (202), the third connecting gas pipe (203), and the fourth connecting gas pipe (204) are connected to the gas storage box (2).
An electromagnetic tension rod (8) is installed at the lower end of the water storage groove (3).
A seal ring (801) is installed at the connecting portion between the electromagnetic tension rod (8) and the water storage groove (3).
A mounting base plate (4) is fixedly provided at one end of the electromagnetic tension rod (8).
The closing component (5) is installed on the mounting base plate (4).
A positioning holding component (6) is provided at the upper end of the mounting base plate (4).
The ventilation component (7) is connected to the gas storage box (2) via the first connecting gas pipe (201) and the second connecting gas pipe (202).
The closing component (5) is connected to the gas storage box (2) via the fourth connecting gas pipe (204) and the third connecting gas pipe (203) .
On the outer wall of the positioning connecting pipe (602), connecting columns (603) are fixedly provided on both horizontal sides along the radial direction.
The axial direction of the connecting column (603) is the same as the axial direction of the positioning connecting pipe (602).
The rotary impeller (604) is connected to the opposite sides of the two connecting columns (603) so as to be rotatable.
The closing component (5) includes a bow-shaped fixing base (501), a bow-shaped sliding block (505), and a closing connecting rod (506).
A bow-shaped sliding groove (502) is formed on the end face of the bow-shaped fixing base (501).
A first bow-shaped stroke groove (503) is formed on the outer wall of the bow-shaped fixing base (501).
A second bow-shaped stroke groove (504) is formed on the inner side wall of the bow-shaped fixing base (501).
Both the first bow-shaped stroke groove (503) and the second bow-shaped stroke groove (504) communicate with the bow-shaped sliding groove (502).
The bow-shaped sliding block (505) is provided so as to be slidable in the bow-shaped sliding groove (502).
Two bow-shaped sliding blocks (505) are provided and each can independently slide with respect to each other in the bow-shaped sliding groove (502).
A screw hole is formed at the center position of the bow-shaped sliding block (505).
A screw sleeve (509) is screwed into the bow-shaped sliding block (505).
The screw sleeve (509) is provided so as to penetrate the first bow-shaped stroke groove (503).
A washer (510) is exteriorized between the screw sleeve (509) and the outer wall of the bow-shaped fixing base (501).
The closing connecting rod (506) is slidably provided in the screw sleeve (509).
An air supply pipe (5061) is provided in the closing connecting rod (506).
The closing connecting rod (506) is provided extending from the outside of the bow-shaped fixing base (501) to the inside of the bow-shaped fixing base (501).
The first closing airbag (508) is externally attached to the end of the closing connecting rod (506) located inside the bow-shaped fixing base (501).
An air supply hole (5062) is formed in the connecting portion between the closing connecting rod (506) and the first closing airbag (508).
The air supply hole (5062) is provided so as to communicate with the air supply pipe (5061).
An air supply joint (507) is connected to the end of the closing connecting rod (506) located on the outer side of the bow-shaped fixing base (501).
The other end of the air supply joint (507) is connected to the fourth connecting gas pipe (204).
The fourth connecting gas pipe (204) is a branch pipe in the third connecting gas pipe (203).
A pressure boosting valve (205) is installed in the fourth connecting gas pipe (204).
The air supply joint (507) is screwed with the closing connecting rod (506), and a sealing bandage is wrapped around the connecting portion between the air supply joint (507) and the closing connecting rod (506).
The ventilation component (7) includes a ventilation connector (701) and a second closing airbag (702).
The ventilation connector (701) is connected to the first connecting gas pipe (201).
The second closing airbag (702) is externally attached to the ventilation connector (701).
The second blocking airbag (702) is connected to the second connecting gas pipe (202).
An airtightness inspection device for welded tee pipes. The control panel (101) is communicatively connected to the controller inside the housing (1).
A plurality of solenoid valves are installed inside the gas storage box (2), and the gas storage box (2) is provided with a plurality of solenoid valves.
Each of the plurality of solenoid valves is a connecting portion between the first connecting gas pipe (201) and the gas storage box (2), and a connecting portion between the second connecting gas pipe (202) and the gas storage box (2). , And fixed to the connecting portion between the third connecting gas pipe (203) and the gas storage box (2).
The plurality of solenoid valves are all communicated with the controller.
The airtightness inspection device for a welded tee pipe according to claim 1. The positioning sandwiching component (6) includes a positioning connecting plate (601) and a positioning connecting pipe (602).
The positioning connecting plate (601) is fixedly provided on the upper end of the mounting base plate (4).
The positioning connecting pipe (602) is fixedly provided at the upper end of the positioning connecting plate (601).
A plurality of positioning connecting grooves (607) are formed inside the positioning connecting pipe (602).
The opening of the positioning connecting groove (607) is provided so as to face the central axis of the positioning connecting pipe (602).
A sliding rod (605) is installed at the lower end of the positioning connecting groove (607).
A bow-shaped holding plate (606) is fixedly provided at the other end of the sliding rod (605).
A connecting spring is externally attached to the sliding rod (605).
One end of the connecting spring is fixedly provided at the lower end of the positioning connecting groove (607).
The other end of the connecting spring is fixedly provided to the bow-shaped holding plate (606).
The airtightness inspection device for a welded tee pipe according to claim 2. The gas stored in the gas storage box (2) is nitrogen gas having a concentration of 99.9%.
The airtightness of the welded tee pipe is inspected with the nitrogen gas.
The airtightness inspection device for a welded tee pipe according to claim 3 .

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