Disc vertical pipe ball valve non-stop disassembly and assembly auxiliary device

Abstract

The utility model provides a disc stand pipe ball valve non-stop dismounting 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 a gas filling device through a breather pipe in the inner shaft, and the gas filling device is connected with a gas filling device. 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 outside of a target ball valve can be sealed through the shaft sleeve and the first sealing ring, the sleeve body can extend into and enter a gas pipeline through a valve hole of the target ball valve, at the moment, inflation is carried out through the gas filling device, the 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 utility model relates to the technical field of gas valves, in particular to an auxiliary device for disassembling and assembling a coil riser ball valve without stopping gas. 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.). Therefore, it is impossible to effectively guarantee the production operation of users who cannot stop operation.

[0003] Regarding the replacement of ball valves in the position of risers (such as tenons), the current practice is to directly shut down the pressure regulating box / cabinet or the corresponding valve at the front end at a specific time, then drain the remaining gas in the pipeline behind the valve at the back end before proceeding. The main disadvantages of this approach are as follows: First, the scope of the operation is uncontrollable, sometimes affecting one or two buildings, sometimes affecting many buildings. This is especially true for elderly people who use gas to make soup at home. If the gas supply is restored after this impact, it is very likely to cause a gas leak in the stove (if there is no flameout protection). Second, the existing method requires draining, which usually requires draining the remaining gas in the pipe section behind the valve and before the meter, resulting in a certain amount of gas waste. Third, in the first two situations, a sudden lack of gas available at home or a noticeable odor after draining can lead to user complaints. Fourth, for industrial users such as ceramics, who cannot easily shut down the gas, in the event of an emergency, it is difficult to avoid gas outage losses. In short, the existing technical methods have obvious areas for improvement. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to propose an auxiliary device for disassembly and assembly of a coil riser ball valve without stopping the gas flow, so as to achieve relatively controllable operation impact range. Through this device, it can ensure that the impact range is effectively controlled in a small range of pipe section behind the ball valve.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model 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 interior of the sleeve body in a limited manner, and an external thread is provided on the middle section of the inner shaft. An extrusion nut for driving the rubber ring into the target gas pipeline is installed on 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 provided at the end of the inner shaft.

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

[0012] Beneficial effect: The utility model 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 the valve hole of the target ball valve. At this time, the gas filling device is used to inflate the sealing expansion ball in the supported expansion cover, and the supported expansion cover is brought into contact with 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

[0013] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the cooperation between the sleeve 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 utility model;

[0015] Figure 2 This is a schematic diagram of the rubber ring, extrusion nut, metal gasket, shaft sleeve, and first sealing ring of the non-stop disassembly and assembly auxiliary device for the disc riser ball valve according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the assembly 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);

[0017] Figure 4 This is a schematic diagram of the second sealing gasket and sealing housing structure of the non-stop disassembly and assembly auxiliary device for the disc riser ball valve according to an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the application status of the non-stop disassembly and assembly auxiliary device for the coil riser ball valve described in an embodiment of the utility model in a gas pipeline. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0021] Example 1

[0022] See also Figure 1-5 : An auxiliary device for disassembly and assembly of a coil riser ball valve without stopping gas, comprising a sleeve body 1, an inner shaft 2 installed inside the sleeve body 1, a supported expansion cover 201 provided at the front end of the inner shaft 2, a sealing expansion ball 3 provided inside the supported expansion cover 201, the sealing 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.

[0023] In this embodiment, the outside of the target ball valve can be sealed by the shaft sleeve and the first sealing ring, and the sleeve body can be extended into the gas pipeline through the valve hole of the target ball valve. At this time, the gas filling device is used to inflate the sealing expansion ball in the supported expansion cover, and the supported expansion cover is brought into contact with 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.

[0024] 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.

[0025] In this embodiment, the rubber ring can improve the sealing performance of the auxiliary device and further prevent gas leakage.

[0026] In a specific example, the inner shaft 2 is connected to the inside of the sleeve body 1 for limited rotation. The middle section of the inner shaft 2 is provided with an external thread, and an extrusion nut 205 is installed on the external thread for driving the rubber ring 204 to be squeezed into the target gas pipeline.

[0027] In this embodiment, when the inner shaft is rotated, the inner shaft can be driven to rotate on its own, thereby driving the extrusion nut threadedly mounted on the inner shaft to advance and squeeze into the gas pipeline to form a seal.

[0028] 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 .

[0029] 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 rings, which would deteriorate the sealing effect.

[0030] In a specific example, a rotating handle 207 is further provided at the end of the inner shaft 2 .

[0031] 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.

[0032] 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.

[0033] This embodiment further strengthens 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. During the disassembly and assembly process, a small section of the internal gas can be released through the exhaust port, thereby improving the convenience of installation.

[0034] The working principle of this embodiment is as follows: the target ball valve is closed and the gas pipeline at the right end of the ball valve has been removed; the external threaded connection port of the device sealing shell is connected to the threaded connection port of the right end of the ball valve; after the seal at the right end of the device is tightened, the ball valve is slowly opened; the shaft belt inside the device is subjected to corresponding force to enhance the seal, and the extrusion member slowly passes through the valve hole of the ball valve into the left end of the ball valve; then the rubber ring, metal washer, extrusion nut, etc. at the left end of the ball valve are slowly squeezed by turning the handle, so that their local volume increases within the limit range, thereby achieving a good sealing effect with the inner wall of the pipeline; then The air-filled balloon at the rightmost end of the device adds air to the sealing expansion ball, causing the sealing expansion ball to expand within the limit range, resulting in good extrusion and friction between the end friction ball of the expansion cover at the supported expansion end and the inner wall of the pipe, ensuring the stability and reliability of the device as a whole; after the remaining air in the sealing outer cover is emptied through the discharge port, the target ball valve is removed, and emergency operations such as gasket replacement or overall update of the ball valve are carried out; after the relevant fault processing is completed, the relevant parts of the device at the left end of the target ball valve are moved to the right end of the ball valve as a whole, the target ball valve is closed, and after emptying through the discharge port, the device can be directly removed.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection 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), 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 sealing expansion ball (3) is provided inside the supported expansion cover (201), and the sealing 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 auxiliary device for disassembling and assembling a coil riser ball valve without stopping the gas flow 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 interior of the sleeve body (1) in a limited rotation manner. 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.

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 includes a sealing shell (6), which is mounted on the shaft sleeve (4), and an external thread (601) that 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); a second sealing ring (7) is provided between the sealing shell (6) and the shaft sleeve (4).

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