Disc stand pipe ball valve non-gas-stop disassembly and assembly auxiliary device and using method

Abstract

The invention provides a disc stand pipe ball valve non-stop disassembly and assembly auxiliary device which comprises a sleeve body, an inner shaft is installed in the sleeve body, a supported expansion cover is arranged at the front end of the inner shaft, a sealing expansion ball is arranged in the supported expansion cover, the sealing expansion ball is connected with an air adding device through a breather pipe in the inner shaft, and the air adding device is connected with an air outlet pipe in the inner shaft. The tail end of the sleeve body is sleeved with a shaft sleeve, and a first sealing ring is arranged between the shaft sleeve and the tail end of the inner shaft. The invention further discloses a using method of the non-gas-stop disassembly and assembly auxiliary device for the disc stand pipe ball valve. The outside of the target ball valve can be sealed through the shaft sleeve and the first sealing ring, the sleeve body can stretch into and enter a gas pipeline through a valve hole of the target ball valve, at the moment, inflation is conducted through the gas filling device, a sealing expansion ball in the supported expansion cover is expanded, and then the target ball valve is sealed. The supported expansion cover abuts against the inner wall of the gas pipeline, sealing of the gas pipeline is completed, and at the moment, the target ball valve can be disassembled, assembled or repaired.

Description

Technical Field

[0001] The present invention relates to the technical field of gas valves, and in particular to a non-stop gas disassembly and assembly auxiliary device for a coil riser ball valve and a use method thereof. Background Art

[0002] At present, in front of the pressure regulating gas meter, especially for non-residential users, there has never been a process technology device specifically used to replace the ball valve in the position of the maintenance plate riser (such as tenon, etc.) without stopping the transmission. Therefore, it is impossible to effectively guarantee the production operation of users who cannot stop operation.

[0003] Regarding the replacement of the ball valve in the position of the riser (such as the tenon, etc.) of the maintenance panel, it is usually necessary to directly stop the pressure regulating box / cabinet or the corresponding valve at the front end at the right time, and then empty the remaining gas in the pipeline behind the rear valve before the operation. The main disadvantages of this approach are as follows: First, the scope of the operation is uncontrollable, sometimes affecting one or two buildings, and sometimes affecting many buildings. In particular, there are elderly people who use gas to cook soup at home. After this impact, the gas supply is restored, which is likely to cause gas leakage from the stove (if there is no flameout protection). Second, the existing approach requires emptying, and it is usually necessary to empty the remaining gas in the pipe section behind the valve and before the meter, which will cause a certain amount of gas waste. Third, in the first two situations, the sudden lack of gas available at home or the obvious odor of the emptying may cause user complaints. Fourth, for industrial users such as ceramics who cannot stop gas at will, it is difficult to avoid gas outage losses in case of emergency. In short, there are obvious areas that need to be improved and improved in the existing technical practices. Summary of the invention

[0004] To solve the above problems, the present invention aims to propose a non-stop disassembly and assembly auxiliary device for a coil riser ball valve and a method for use, so as to achieve a relatively controllable operation impact range. Through the device, it can be ensured that the impact range is effectively controlled in a small pipe section behind the ball valve.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An auxiliary device for disassembly and assembly of a coil riser ball valve without stopping gas flow comprises a sleeve body, an inner shaft is installed inside the sleeve body, a supported expansion hood is provided at the front end of the inner shaft, a sealing expansion ball is provided inside the supported expansion hood, the sealing expansion ball is connected to an air filling device through a vent pipe inside the inner shaft, a shaft sleeve is sleeved on the end of the sleeve body, and a first sealing ring is provided between the shaft sleeve and the end of the inner shaft.

[0007] Furthermore, a rubber ring is installed on the front end of the inner shaft, and the rubber ring is slightly larger than the inner diameter of the target gas pipeline.

[0008] Furthermore, the inner shaft is rotationally connected to the inside of the sleeve body in a limited position, and an external thread is provided at the middle section of the inner shaft, and an extrusion nut for driving the rubber ring to be squeezed into the target gas pipeline is installed at the external thread.

[0009] Furthermore, two rubber rings are provided, and metal pads are provided between adjacent rubber rings and between the rubber ring and the extrusion nut.

[0010] Furthermore, a rotating handle is also provided at the end of the inner shaft.

[0011] Furthermore, it also includes a sealing shell, which is installed on the shaft sleeve, and the front end of the sealing shell is provided with an external thread consistent with the target ball valve, and the upper part of the sealing shell is provided with a discharge port; a second sealing ring is provided between the sealing shell and the shaft sleeve.

[0012] In order to achieve the above object, the present invention also discloses a method for using a non-stop disassembly and assembly auxiliary device for a coil riser ball valve, comprising the following steps:

[0013] S1: Close the target ball valve and remove the gas pipeline at the right end of the ball valve;

[0014] S2: Connect the external threaded connection port of the device sealing housing to the right end thread of the target ball valve;

[0015] S3: After tightening the seal at the right end of the device, slowly open the ball valve; after the shaft belt in the device is subjected to corresponding force to enhance the seal, the extrusion component slowly passes through the valve hole of the ball valve into the left end of the ball valve; then slowly rotate the handle to squeeze the rubber ring, metal gasket and extrusion nut at the left end of the ball valve, so that their local volume increases within the limit range, thereby achieving a good sealing effect with the inner wall of the pipeline;

[0016] S4: Then, the air filling device at the rightmost end of the device is used to fill the sealing expansion ball with air, so that the sealing expansion ball expands within the limit range, so that the end friction ball of the expansion cover at the supported expansion end and the inner wall of the pipe are well squeezed and rubbed, thus ensuring that the device is stable and reliable as a whole;

[0017] S5: After exhausting the remaining gas in the sealing cover through the discharge port, remove the target ball valve and perform emergency operations such as gasket replacement or overall ball valve renewal;

[0018] S6: After the relevant fault processing is completed, move the relevant parts of the left end device of the target ball valve to the right end of the ball valve as a whole, close the target ball valve, empty it through the discharge port, and then directly dismantle the device.

[0019] Beneficial effect: The present invention can seal the outside of the target ball valve through the shaft sleeve and the first sealing ring, and can extend into the gas pipeline through the sleeve body and through the valve hole of the target ball valve. At this time, the sealing expansion ball in the supported expansion cover is inflated by the gas filling device, and the supported expansion cover is abutted against the inner wall of the gas pipeline to complete the sealing of the gas pipeline. At this time, the target ball valve can be disassembled or repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the cooperation between the casing body, the inner shaft and the supported expansion cover of the non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of a rubber ring, a squeeze nut, a metal gasket, a shaft sleeve, and a first sealing ring of a non-stop disassembly and assembly auxiliary device for a coil riser ball valve according to an embodiment of the present invention;

[0023] Figure 3 It is an assembly diagram of the non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to an embodiment of the present invention (the second sealing gasket and the sealing housing are not installed);

[0024] Figure 4 It is a schematic diagram of the structure of a second sealing gasket and a sealing housing of the non-stop disassembly and assembly auxiliary device for a coil riser ball valve according to an embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the application status of the non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to an embodiment of the present invention in a gas pipeline. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] Example 1

[0029] See also Figure 1-5 : An auxiliary device for disassembly and assembly of a coil riser ball valve without stopping gas flow, comprising a sleeve body 1, an inner shaft 2 is installed inside the sleeve body 1, a supported expansion cover 201 is provided at the front end of the inner shaft 2, a sealed expansion ball 3 is provided inside the supported expansion cover 201, the sealed expansion ball 3 is connected to an air filling device 203 through a vent pipe 202 inside the inner shaft 2, a shaft sleeve 4 is sleeved on the end of the sleeve body 1, and a first sealing ring 5 is provided between the shaft sleeve 4 and the end of the inner shaft 2.

[0030] In this embodiment, the outside of the target ball valve can be sealed by the shaft sleeve and the first sealing ring, and can be extended into the gas pipeline through the sleeve body and the valve hole of the target ball valve. At this time, the sealing expansion ball in the supported expansion cover is inflated by the gas filling device, and the supported expansion cover is abutted against the inner wall of the gas pipeline to complete the sealing of the gas pipeline. At this time, the target ball valve can be disassembled or repaired.

[0031] In a specific example, a rubber ring 204 is further installed on the front end of the inner shaft 2, and the rubber ring 204 is slightly larger than the inner diameter of the target gas pipeline.

[0032] In this embodiment, the rubber ring can improve the sealing performance of the auxiliary device and further prevent gas leakage.

[0033] In a specific example, the inner shaft 2 is connected to the inside of the sleeve body 1 in a limited rotation manner, and the middle section of the inner shaft 2 is provided with an external thread, and an extrusion nut 205 for driving the rubber ring 204 to be squeezed into the target gas pipeline is installed on the external thread.

[0034] In this embodiment, when the inner shaft is rotated, the inner shaft can be driven to rotate by itself, thereby driving the extrusion nut threadedly mounted on the inner shaft to move forward and squeeze into the gas pipeline to form a seal.

[0035] In a specific example, two rubber rings 204 are provided, and metal washers 206 are provided between adjacent rubber rings 204 and between the rubber ring 204 and the extrusion nut 205 .

[0036] This embodiment is provided with two sets of rubber rings and matched with metal washers to prevent the extrusion nut from causing adverse deformation and warping of the rubber ring, thereby deteriorating the sealing effect.

[0037] In a specific example, a rotating handle 207 is further provided at the end of the inner shaft 2 .

[0038] In this embodiment, the inner shaft can be easily rotated by rotating the handle, so that the rubber ring enters the gas pipeline for sealing.

[0039] In a specific example, it also includes a sealing shell 6, which is installed on the sleeve 4. The front end of the sealing shell 6 is provided with an external thread 601 consistent with the target ball valve 8, and the upper part of the sealing shell 6 is provided with a discharge port 602; a second sealing ring 7 is provided between the sealing shell 6 and the sleeve 4.

[0040] This embodiment further enhances the sealing performance of the disassembly and assembly auxiliary device by sealing the sealing shell that is threadedly connected to the target ball valve and cooperating with the second sealing ring for sealing. During the disassembly and assembly process, a small section of the internal gas can be released through the discharge port, thereby improving the convenience of installation.

[0041] Example 2

[0042] This embodiment also discloses a method for using a non-stop disassembly and assembly auxiliary device for a coil riser ball valve, comprising the following steps:

[0043] S1: Close the target ball valve 8 and remove the gas pipeline at the right end of the ball valve;

[0044] S2: Connect the external threaded connection port of the device sealing housing 6 to the right end thread of the target ball valve 8;

[0045] S3: After tightening the seal at the right end of the device, slowly open the ball valve; after the shaft belt in the device is subjected to corresponding force to enhance the seal, the extrusion component slowly passes through the valve hole of the ball valve into the left end of the ball valve; then slowly rotate the handle to squeeze the rubber ring 204, metal gasket 205, and extrusion nut 206 that have reached the left end of the ball valve, so that their local volume increases within the limit range, thereby achieving a good sealing effect with the inner wall of the pipeline;

[0046] S4: Then, the air filling device 203 at the rightmost end of the device is used to fill the sealing expansion ball 3 with air, so that the sealing expansion ball 3 expands within the limit range, so that the expansion cover end of the supported expansion end and the friction ball and the inner wall of the pipe are well squeezed and rubbed, thereby ensuring that the device is stable and reliable as a whole;

[0047] S5: After exhausting the remaining gas in the sealing outer cover through the discharge port 602, the target ball valve 8 is removed and emergency operations such as gasket replacement or overall ball valve renewal are performed;

[0048] S6: After the relevant fault processing is completed, the relevant part of the device at the left end of the target ball valve 8 is moved to the right end of the ball valve as a whole, the target ball valve 8 is closed, and after emptying through the discharge port 602, the device can be directly dismantled.

[0049] The method of using the non-stop disassembly and assembly auxiliary device for the coil riser ball valve of this embodiment has the same advantages as the above-mentioned non-stop disassembly and assembly auxiliary device for the coil riser ball valve relative to the prior art, and will not be repeated here.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-stop disassembly and assembly auxiliary device for a coil riser ball valve, characterized in that: The invention comprises a sleeve body (1), wherein an inner shaft (2) is installed inside the sleeve body (1), a supported expansion cover (201) is provided at the front end of the inner shaft (2), a sealed expansion ball (3) is provided inside the supported expansion cover (201), and the sealed expansion ball (3) is connected to an air filling device (203) through a vent pipe (202) inside the inner shaft (2), a shaft sleeve (4) is sleeved on the end of the sleeve body (1), and a first sealing ring (5) is provided between the shaft sleeve (4) and the end of the inner shaft (2).

2. The non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to claim 1 is characterized in that: A rubber ring (204) is also installed on the front end of the inner shaft (2), and the rubber ring (204) is slightly larger than the inner diameter of the target gas pipeline.

3. The non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to claim 2 is characterized in that: The inner shaft (2) is connected to the inside of the sleeve body (1) in a limited rotational manner, and the middle section of the inner shaft (2) is provided with an external thread, and an extrusion nut (205) is installed at the external thread for driving the rubber ring (204) to be squeezed into the target gas pipeline.

4. The non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to claim 3 is characterized in that: Two rubber rings (204) are provided, and metal pads (206) are provided between adjacent rubber rings (204) and between the rubber ring (204) and the extrusion nut (205).

5. The non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to claim 3 is characterized in that: A rotating handle (207) is also provided at the end of the inner shaft (2).

6. The non-stop disassembly and assembly auxiliary device for the coil riser ball valve according to claim 1 is characterized in that: The invention also comprises a sealing shell (6), wherein the sealing shell (6) is mounted on the shaft sleeve (4), an external thread (601) which is consistent with the target ball valve (8) is provided on the front end of the sealing shell (6), and a discharge port (602) is provided on the upper part of the sealing shell (6); and a second sealing ring (7) is provided between the sealing shell (6) and the shaft sleeve (4).

7. A method for using the non-stop disassembly and assembly auxiliary device for a coil riser ball valve according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Close the target ball valve (8) and remove the gas pipeline at the right end of the ball valve; S2: Connect the external threaded connection port of the device sealing housing (6) to the right end thread of the target ball valve (8); S3: After the seal at the right end of the device is tightened, the ball valve is slowly opened; the shaft belt in the device is subjected to corresponding force to enhance the seal, and the extrusion component slowly passes through the valve hole of the ball valve into the left end of the ball valve; then the handle is slowly turned to squeeze the rubber ring (204), metal gasket (205), and extrusion nut (206) that have reached the left end of the ball valve, so that their local volume is increased within the limit range, thereby achieving a good sealing effect with the inner wall of the pipeline; S4: Then, the air filling device (203) at the rightmost end of the device is used to fill the sealing expansion ball (3), so that the sealing expansion ball (3) expands within the limit range, so that the end friction ball of the expansion cover at the supported expansion end and the inner wall of the pipe are well squeezed and rubbed, thereby ensuring that the device is stable and reliable as a whole; S5: After exhausting the remaining gas in the sealing outer cover through the discharge port (602), the target ball valve (8) is removed and emergency operations such as gasket replacement or overall ball valve renewal are performed; S6: After the relevant fault processing is completed, the relevant part of the device at the left end of the target ball valve (8) is moved to the right end of the ball valve as a whole, the target ball valve (8) is closed, and after emptying through the discharge port (602), the device can be directly dismantled.

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