Non-stop gas replacement device for gas ball valve

Abstract

The utility model discloses a gas ball valve non-stop replacing device which comprises a guide rod, the bottom end of the guide rod is provided with an oil bag which can move up and down along with the guide rod and is inserted into a gas ball valve diffusing pipe together with the guide rod, and the top end of the oil bag is provided with a liquid conveying pipe which penetrates through the guide rod and is communicated with the oil bag. An oil injection mechanism used for adjusting the oil injection amount in the oil bag is detachably arranged at the end, away from the oil bag, of the liquid conveying pipe. The special plug is rotationally arranged outside the guide rod in a sleeving manner, is used for being connected with the bleeder ball valve after the original plug is detached from the bleeder ball valve, and can move up and down along the guide rod along with the bleeder ball valve. The diffusion pipe ball valve is replaced without stopping gas supply, residual gas does not need to be discharged, natural gas resource waste and carbon emission are avoided, operation is simple and easy, a large amount of work in the early stage when the diffusion pipe ball valve is replaced is reduced, and work efficiency and operation safety are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transmission, in particular to a device for replacing a gas ball valve without stopping the gas supply. Background Art

[0002] The statements herein only provide the background art related to the present invention and do not necessarily constitute the prior art.

[0003] A bleeder ball valve for discharging is generally provided on buried gas pipelines and valves. During the use of such a bleeder ball valve, the ball valve on the bleeder pipe will more or less have failures or leaks, thus requiring replacement and repair. Currently, the replacement method is to close the gas supply valve and empty the gas in the gas pipeline network connected to the bleeder ball valve, and then carry out the disassembly and replacement work under the condition of no pressure.

[0004] The above technology has the following several disadvantages:

[0005] 1. Emptying the remaining gas in the gas pipeline will cause waste of natural gas resources and carbon emissions;

[0006] 2. There is no relatively safe discharge point, and there are risks such as deflagration and ignition of combustible gases in the surrounding environment during the discharge process;

[0007] 3. The airflow sound during the discharge process is sharp and harsh, causing noise pollution;

[0008] 4. Personnel operation and monitoring need to be set during the discharge process, consuming a large amount of manpower;

[0009] 5. The gas inventory in the pipeline is large, and it takes a long time to empty the remaining gas in the pipeline;

[0010] 6. After the old ball valve is removed by the current replacement method, the pipe orifice will directly face the operation space, posing safety hazards such as deflagration. Content of the Utility Model

[0011] The purpose of the utility model is to aim at the above deficiencies at present, and provide a device for replacing a gas ball valve without stopping the gas supply, so as to achieve the purpose of replacing a faulty ball valve without stopping the gas supply.

[0012] To solve the above technical problems, the utility model adopts the following technical solutions: A device for replacing a gas ball valve without stopping the gas supply, including a guide rod, an oil bag capable of moving up and down along with the guide rod and being inserted into the bleeder pipe of the gas ball valve is arranged at the bottom end of the guide rod, an infusion pipe penetrating through the guide rod and communicated with the oil bag is arranged at the top end of the oil bag, and an oil injection mechanism for adjusting the oil injection amount in the oil bag is detachably arranged at one end of the infusion pipe away from the oil bag;

[0013] It also includes a special plug rotatably sleeved outside the guide rod, which is used to connect with the blow-off pipe ball valve after the original plug on the blow-off pipe ball valve is disassembled, and can move up and down along the guide rod following the blow-off pipe ball valve.

[0014] Furthermore, the oil injection mechanism includes a first stop valve detachably arranged at one end of the infusion pipe far from the oil bladder. A storage oil tank communicated with the first stop valve is arranged at the end of the first stop valve far from the infusion pipe. A piston plate capable of moving towards and away from the first stop valve is arranged in the storage oil tank. An adjusting handle penetrating through the storage oil tank and threadedly connected with the storage oil tank is rotatably arranged on the side of the piston plate far from the first stop valve. The maximum volume of the storage oil tank is greater than the sum of the minimum volumes of the infusion pipe and the oil bladder.

[0015] Furthermore, a cavity is arranged in the guide rod. An air inlet hole communicated with the cavity is arranged at the bottom end of the guide rod. An exhaust mechanism inserted into the cavity of the guide rod is arranged at the top end of the guide rod.

[0016] The exhaust mechanism includes an exhaust pipe. One end of the exhaust pipe is inserted into the cavity of the guide rod, and a second stop valve is arranged at the other end of the exhaust pipe.

[0017] Furthermore, it also includes a fixed support mechanism for fixing the guide rod to the blow-off pipe of the gas ball valve and guiding the up-and-down movement of the guide rod.

[0018] Furthermore, the fixed support mechanism includes a bracket. A first clamping component for clamping and fixing with the blow-off pipe of the gas ball valve and two second clamping components for clamping and fixing with the guide rod are arranged on the bracket.

[0019] Both the first clamping component and the second clamping component are composed of two clamping plates rotatably arranged on the bracket and bolts threadedly arranged on the clamping plates. A first arc-shaped groove adapted to the blow-off pipe of the gas ball valve is arranged on the opposite side of the two clamping plates of the first clamping component. A second arc-shaped groove adapted to the guide rod is arranged on the opposite side of the two clamping plates of the second clamping component.

[0020] The beneficial effects of the utility model are embodied in:

[0021] In this utility model, when the drain valve ball valve is in the closed state, the original plug on it is removed, and then the guide rod and the oil bag equipped with a special plug are inserted into the drain valve ball valve. After the special plug is screwed onto the drain valve ball valve, the drain valve ball valve is opened, and the guide rod is pushed downward through the drain valve ball valve so that the oil bag is located in the drain pipe of the gas ball valve. Then, a liquid is injected into the oil bag through an oil injection mechanism, causing the oil bag to expand and separating the upper and lower spaces of the oil bag. At this time, the drain valve ball valve can be directly disassembled for replacement and maintenance. By replacing the drain valve ball valve without stopping the gas supply, there is no need to discharge the remaining gas, avoiding waste of natural gas resources and carbon emissions. Moreover, it is simple and easy to operate, reducing a large amount of preparatory work during the replacement of the drain valve ball valve, effectively improving work efficiency and operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional view of the present utility model;

[0023] Figure 2 is Figure 1 a partially enlarged schematic view of the location A shown;

[0024] Figure 3 is a sectional view of the infusion tube of the present utility model;

[0025] Figure 4 is a partial sectional view of the oil injection mechanism of the present utility model.

[0026] In the figure:

[0027] 1. Guide rod; 2. Oil bag; 3. Infusion tube; 4. Oil injection mechanism; 41. First stop valve; 42. Oil storage tank; 43. Piston plate; 44. Adjusting handle; 5. Special plug; 6. Exhaust mechanism; 61. Exhaust pipe; 62. Second stop valve; 7. Fixed support mechanism; 71. Bracket; 72. First clamping assembly; 73. Second clamping assembly; 721. Clamping plate; 722. Bolt; 8. Drain pipe of the gas ball valve; 9. Drain valve ball valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-4, the present utility model discloses a device for replacing a gas ball valve without shutting off the gas, which includes a guide rod 1. At the bottom end of the guide rod 1, there is an oil bag 2 that can move up and down along with the guide rod 1 and be inserted into the gas ball valve blow-off pipe 8 together. At the top end of the oil bag 2, there is an infusion pipe 3 that penetrates through the guide rod 1 and is communicated with the oil bag 2. At the end of the infusion pipe 3 far away from the oil bag 2, there is a detachable oil injection mechanism 4 for adjusting the oil injection volume in the oil bag 2;

[0030] It also includes a special plug 5 rotatably sleeved outside the guide rod 1, which is used to connect with the blow-off pipe ball valve 9 after the original plug on the blow-off pipe ball valve 9 is removed, and can move up and down along the guide rod 1 following the blow-off pipe ball valve 9.

[0031] In the present utility model, when the blow-off pipe ball valve 9 is in the closed state, the original plug on it is removed, and then the guide rod 1 and the oil bag 2 equipped with the special plug 5 are inserted into the blow-off pipe ball valve 9. When the special plug 5 is screwed onto the blow-off pipe ball valve 9, the blow-off pipe ball valve 9 is opened, and the guide rod 1 is pushed down to pass through the blow-off pipe ball valve 9, so that the oil bag 2 is located in the gas ball valve blow-off pipe 8. Then, through the oil injection mechanism 4, liquid is infused into the oil bag 2 to make the oil bag 2 expand, separating the upper and lower spaces of the oil bag 2. At this time, the blow-off pipe ball valve 9 can be directly disassembled for replacement and maintenance. By replacing the blow-off pipe ball valve 9 without shutting off the gas, there is no need to discharge the remaining gas, avoiding waste of natural gas resources and carbon emissions, and it is simple and easy to operate, reducing a large amount of preparatory work during the replacement of the blow-off pipe ball valve 9, effectively improving work efficiency and operation safety.

[0032] In an embodiment, the oil injection mechanism 4 includes a first stop valve 41 detachably arranged at the end of the infusion pipe 3 far away from the oil bag 2. At the end of the first stop valve 41 far away from the infusion pipe 3, there is an oil storage tank 42 communicated with the first stop valve 41. Inside the oil storage tank 42, there is a piston plate 43 that can move towards and away from the first stop valve 41. On the side of the piston plate 43 far away from the first stop valve 41, there is a regulating handle 44 that penetrates through the oil storage tank 42 and is threadedly connected with the oil storage tank 42. The maximum volume of the oil storage tank 42 is greater than the sum of the minimum volumes of the infusion pipe 3 and the oil bag 2.

[0033] With such a design, by rotating the regulating handle 44 to change the position of the piston plate 43, the expansion state of the oil bag 2 can be changed, enabling the oil bag 2 to expand or contract according to requirements, meeting the operation needs, and the operation is simple. It can be installed on the infusion pipe 3 for a long time, facilitating the carrying and movement of the entire device for replacing without shutting off the gas.

[0034] During specific use, the oil injection mechanism 4 needs to be removed from the infusion tube 3 first. Open the first stop valve 41, inject oil into the oil storage tank 42 from the open end of the first stop valve 41 until the oil storage tank 42 is filled to the maximum oil storage capacity. Then close the first stop valve 41 and install it on the infusion tube 3 and the oil bladder 2 that discharges internal air. Finally, the first stop valve 41 can be opened again, and the oil injection operation can be completed by rotating the adjustment handle 44.

[0035] It should be noted that according to specific use requirements, the user can replace the oil bladder 2 in the gas ball valve non-stop replacement device with an air bladder, and at the same time replace the oil injection mechanism 4 with an air compressor. The air bladder is inflated by the air supply of the air compressor to achieve the same sealing effect.

[0036] In one embodiment, a cavity is provided inside the guide rod 1. An air inlet hole communicating with the cavity is opened at the bottom end of the guide rod 1, and an exhaust mechanism 6 inserted into the cavity of the guide rod 1 is provided at the top end of the guide rod 1.

[0037] The exhaust mechanism 6 includes an exhaust pipe 61. One end of the exhaust pipe 61 is inserted into the cavity of the guide rod 1, and a second stop valve 62 is provided at the other end of the exhaust pipe 61.

[0038] With this design, after the oil bladder 2 is inserted into the gas ball valve bleed pipe 8, a long pipe can be connected to the other end of the second stop valve 62 away from the exhaust pipe 61 first, and the other end of the long pipe is located in an open area outside the valve well. Then, by opening the second stop valve 62, the residual gas above the oil bladder 2 is slowly discharged along the long pipe. After the residual gas is exhausted, the replacement operation of the bleed pipe ball valve 9 can be carried out, thereby further improving the safety during the replacement and maintenance process.

[0039] It should be noted that both the exhaust mechanism 6 and the oil injection mechanism 4 can pass through the holes for the movement of the guide rod 1 on the special plug 5 during the upward movement of the bleed pipe ball valve 9, and there will be no interference during the upward movement of the bleed pipe ball valve 9.

[0040] In one embodiment, the gas ball valve non-stop replacement device further includes a fixed support mechanism 7 for fixing the guide rod 1 to the gas ball valve bleed pipe 8 and guiding the up and down movement of the guide rod 1, so that no additional personnel are required to support the guide rod 1 during the replacement of the bleed pipe ball valve 9, making the gas ball valve non-stop replacement device convenient for single-person operation and effectively reducing the number of operating personnel.

[0041] In one embodiment, the fixed support mechanism 7 includes a bracket 71. A first clamping component 72 for clamping and fixing to the gas ball valve bleed pipe and two second clamping components 73 for clamping and fixing to the guide rod 1 are provided on the bracket 71.

[0042] Both the first clamping assembly 72 and the second clamping assembly 73 are composed of two clamping plates 721 rotatably arranged on the bracket 71 and bolts 722 threadedly arranged on the clamping plates 721. On the opposite sides of the two clamping plates 721 of the first clamping assembly 72, first arc-shaped grooves adapted to the gas ball valve blow-off pipe are provided. On the opposite sides of the two clamping plates 721 of the second clamping assembly 73, second arc-shaped grooves adapted to the guide rod 1 are provided.

[0043] With such a design, by disassembling and assembling the bolts 722, the clamping plates 721 can be quickly fixed to or separated from the guide rod 1 or the gas ball valve blow-off pipe 8. At the same time, since there are two second clamping assemblies 73 for clamping the guide rod 1, during the process of disassembling the blow-off pipe ball valve 9, by ensuring that at least one of the two second clamping assemblies 73 clamps the guide rod 1, it not only does not affect the disassembly and replacement of the blow-off pipe ball valve 9, but also can ensure the position stability of the guide rod 1 during the replacement process.

[0044] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0046] In addition, "a plurality of" means two or more.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A gas ball valve non-stop replacement device, characterized by: The invention comprises a guide rod (1), the bottom end of which is provided with an oil bag (2) which can move up and down with the guide rod (1) and be inserted into the discharge pipe of the gas ball valve together, the top end of which is provided with a liquid infusion pipe (3) which penetrates the guide rod (1) and is connected to the oil bag (2), and the end of the liquid infusion pipe (3) which is away from the oil bag (2) is detachably provided with an oil filling mechanism (4) for adjusting the amount of oil filled in the oil bag (2); It also includes a special plug (5) rotatably sleeved outside the guide rod (1), which is used to connect with the relief pipe ball valve after the original plug on the relief pipe ball valve is removed, and can move up and down along the guide rod (1) with the relief pipe ball valve.

2. According to claim 1, a gas ball valve non-stop replacement device is characterized in that: The oil injection mechanism (4) comprises a first stopcock (41) detachably arranged at an end of the infusion tube (3) away from the oil bag (2); an oil storage tank (42) connected to the first stopcock (41) is arranged at the end of the first stopcock (41) away from the infusion tube (3); a piston plate (43) is arranged in the oil storage tank (42) and can move toward and away from the first stopcock (41); an adjusting handle (44) is rotatably arranged on the side of the piston plate (43) away from the first stopcock (41) and penetrates the oil storage tank (42) and is threadedly connected to the oil storage tank (42); the maximum volume of the oil storage tank (42) is greater than the sum of the minimum volumes of the infusion tube (3) and the oil bag (2).

3. According to claim 1, a gas ball valve non-stop replacement device is characterized in that: The guide rod (1) is provided with a cavity, the bottom end of the guide rod (1) is provided with an air inlet hole connected to the cavity, and the top end of the guide rod (1) is provided with an exhaust mechanism (6) plugged into the cavity of the guide rod (1); The exhaust mechanism (6) comprises an exhaust pipe (61), one end of which is plugged into the cavity of the guide rod (1), and the other end of which is provided with a second stopcock (62).

4. According to claim 1, a gas ball valve non-stop replacement device is characterized in that: It also includes a fixed support mechanism (7) for fixing the guide rod (1) to the gas ball valve discharge pipe and guiding the guide rod (1) to move up and down.

5. According to claim 4, a gas ball valve non-stop replacement device is characterized in that: The fixed support mechanism (7) comprises a bracket (71), on which a first clamping assembly (72) for clamping and fixing with the gas ball valve discharge pipe and two second clamping assemblies (73) for clamping and fixing with the guide rod (1) are arranged; The first clamping assembly (72) and the second clamping assembly (73) are both composed of two clamping plates (721) rotatably arranged on the bracket (71) and bolts (722) threadedly arranged on the clamping plates (721); the two clamping plates (721) of the first clamping assembly (72) are provided with a first arc groove adapted to the gas ball valve discharge pipe on opposite sides; the two clamping plates (721) of the second clamping assembly (73) are provided with a second arc groove adapted to the guide rod (1) on opposite sides.

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