Auxiliary device capable of replacing valve in front of meter without stopping gas supply

Abstract

The utility model relates to the technical field of gas tools, in particular to an auxiliary device for replacing a valve in front of a meter without stopping gas supply. The sealing device comprises a main shaft plugging rod, an external thread part arranged at one end of the main shaft plugging rod, a top limiting nut, a bottom limiting nut and a plurality of groups of sealing rubber sleeves, wherein the top limiting nut and the bottom limiting nut are in threaded connection with the external thread part; the main shaft plugging rod is sleeved with the sealing rubber sleeves, and the sealing rubber sleeves are arranged between the top limiting nut and the bottom limiting nut; the top of the sealing rubber sleeve arranged at the top abuts against the bottom of the top limiting nut, and the bottom of the sealing rubber sleeve arranged at the bottom abuts against the top of the bottom limiting nut. The pipeline sealing device has the advantages that the top limiting nut and the bottom limiting nut are arranged in the technical scheme, the sealing rubber sleeve is limited through the top limiting nut and the bottom limiting nut, the structure is simple, operation is easy, and the sealing rubber sleeve can be replaced according to the diameter of a pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of gas work tools, in particular to an auxiliary device for replacing a valve before a meter without stopping the gas supply. Background Art

[0002] In the prior art, two persons are required to replace the valve before the indoor meter. One person assists in closing the riser valve to stop the gas supply, and the other person performs the replacement operation. After replacement, a riser airtightness test needs to be carried out, which is time-consuming and laborious and affects the gas use of users of the entire riser. In addition, with a sleeve-type air guiding bag, in actual operation, when the outer riser needs to be replaced, it is very difficult to wind the raw material tape with one hand inside the air guiding bag.

[0003] In the prior art, the application number is: CN2021107184010, a quick cut-off plugging tooling. Its structure is complex, and due to the excessive use of transmission rod connecting blocks and other components between parts, in actual use, if the structure is damaged, it is impossible to know whether it is opened inside to achieve plugging. Therefore, there is a risk during gas replacement, and the manufacturing cost is high, and it is not easy to replace and repair.

[0004] Therefore, it is necessary to design an auxiliary device for replacing the valve before the meter without stopping the gas supply to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary device for replacing the valve before the meter without stopping the gas supply to overcome the above-mentioned deficiencies existing in the current prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An auxiliary device for replacing the valve before the meter without stopping the gas supply, which includes a main shaft plugging rod, and is characterized in that: a top limiting nut and a bottom limiting nut threadedly connected to the external thread portion at one end of the main shaft plugging rod, and a plurality of groups of sealing rubber sleeves sleeved on the main shaft plugging rod and disposed between the top limiting nut and the bottom limiting nut. The top of the sealing rubber sleeve at the top abuts against the bottom of the top limiting nut, and the bottom of the sealing rubber sleeve at the bottom is abutted by the top of the bottom limiting nut. A sealing outer ring is provided on the sealing rubber sleeve, and the sealing outer ring is in an arc structure, and the sealing rubber sleeves are arranged in a head-to-tail inverted manner between two by two.

[0008] Preferably, the diameter of the sealing rubber sleeve is larger than the diameters of the top limiting nut and the bottom limiting nut.

[0009] Preferably, at least two groups of sealing rubber sleeves are provided, and the sealing rubber sleeves abut against each other.

[0010] Preferably, a handle end is provided at the end of the main shaft plugging rod, and the diameter of the handle end is greater than that of the main shaft plugging rod, and the two are concentrically arranged.

[0011] Preferably, gaskets are respectively provided on the contact surfaces of the sealing rubber sleeve with the top limiting nut and the bottom limiting nut.

[0012] The beneficial effect of the present utility model is as follows: By providing a top limiting nut and a bottom limiting nut in this technical solution, a sealing rubber sleeve is arranged between them, and then the sealing rubber sleeve is limited by the top limiting nut and the bottom limiting nut to form a structure capable of quickly plugging the inside of the pipeline. The structure is simple, easy to operate, and the sealing rubber sleeve can be replaced according to the diameter of the pipeline. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an auxiliary device for replacing a valve before a meter without stopping the gas in the present utility model;

[0014] In the figure: 1, main shaft plugging rod; 2, external thread part; 3, top limiting nut; 4, bottom limiting nut; 5, sealing rubber sleeve; 51, sealing outer ring; 6, gasket; 7, handle end. Detailed Embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. 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.

[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0017] Refer to Figure 1 , an auxiliary device for replacing a valve before a meter without stopping the gas, which includes a main shaft plugging rod 1, an external thread part 2 provided at one end of the main shaft plugging rod, a top limiting nut 3 and a bottom limiting nut 4 threadedly connected to the external thread part, and a plurality of groups of sealing rubber sleeves 5 sleeved on the main shaft plugging rod and disposed between the top limiting nut and the bottom limiting nut;

[0018] The diameter of the sealing rubber sleeve 5 is larger than the diameters of the top limit nut 3 and the bottom limit nut 4.

[0019] The sealing rubber sleeve 5 can be replaced as needed, and sealing rubber sleeves with different diameters can be replaced to cooperate with pipelines of different diameters for use.

[0020] The top of the sealing rubber sleeve 5 placed at the top abuts against the bottom of the top limit nut 3, and the bottom of the sealing rubber sleeve 5 placed at the bottom is abutted by the top of the bottom limit nut 4;

[0021] In order to effectively block, at least two groups of the sealing rubber sleeves 5 are provided, and the sealing rubber sleeves abut against each other; in order to effectively block the internal pipeline, a sealing outer ring 51 is provided on the sealing rubber sleeve 5, and the sealing outer ring is in an arc structure. The sealing rubber sleeves are arranged upside down in pairs, that is, the arc structures are arranged corresponding to each other, so as to ensure that the pipe interior is blocked from at least two directions, with the upper part bent downward and the lower part bent upward;

[0022] In order to facilitate manual taking, a handle end 7 is provided at the end of the main shaft plugging rod, and the diameter of the handle end 7 is larger than the diameter of the main shaft plugging rod 1, and the two are arranged concentrically. People can cooperate with inserting into the pipeline by abutting against the handle end 7.

[0023] Gaskets 6 are respectively arranged on the contact surfaces of the sealing rubber sleeve and the top limit nut 3 and the bottom limit nut 4;

[0024] In this embodiment, after the pipelines of the gas meter and the valve are disconnected, people directly insert one end of the sealing rubber sleeve into the pipeline of the valve in front of the meter, pass through the pipeline of the valve in front of the meter until inside the gas pipeline, and then people unscrew the valve in front of the meter to separate it from the gas pipeline. This device remains stationary, and the valve in front of the meter can be taken out along the main shaft plugging rod 1. Subsequently, a new valve in front of the meter is replaced. After installation, slowly pull out the product until reaching the end of the valve in front of the meter, manually adjust the valve of the valve in front of the meter to close, and then connect it to the gas meter, that is, the installation is completed.

[0025] The beneficial effects of the present utility model are as follows: By providing a top limit nut and a bottom limit nut, and arranging a sealing rubber sleeve therebetween, and then limiting the sealing rubber sleeve by the top limit nut and the bottom limit nut, a structure capable of quickly blocking the interior of the pipeline is made. The structure is simple, easy to operate, and the sealing rubber sleeve can be replaced according to the diameter of the pipeline.

[0026] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An auxiliary device for replacing the valve before the meter without stopping the gas supply, which includes a main shaft plugging rod, and is characterized in that: The external thread portion at one end of the main shaft plugging rod is threadedly connected to the top limit nut and the bottom limit nut on the external thread portion, and several groups of sealing rubber sleeves sleeved on the main shaft plugging rod and positioned between the top limit nut and the bottom limit nut. The top of the sealing rubber sleeve at the top abuts against the bottom of the top limit nut, and the bottom of the sealing rubber sleeve at the bottom is abutted by the top of the bottom limit nut. A sealing outer ring is provided on the sealing rubber sleeve, and the sealing outer ring is in an arc structure, and the sealing rubber sleeves are arranged with their heads and tails reversed between each other.

2. The auxiliary device for replacing the valve before the meter without stopping the gas according to claim 1, wherein: The diameter of the sealing rubber sleeve is larger than the diameters of the top limit nut and the bottom limit nut.

3. An auxiliary device for replacing the front valve of a meter without stopping the gas, according to claim 1, characterized in that: At least two groups of the sealing rubber sleeves are provided, and the sealing rubber sleeves abut against each other.

4. An auxiliary device for replacing the front valve of a meter without stopping the gas, as described in claim 1, characterized in that: A handle end is provided at the end of the main shaft plugging rod, and the diameter of the handle end is larger than the diameter of the main shaft plugging rod, and the two are arranged as concentric circles.

5. An auxiliary device for replacing a front meter valve without stopping the gas supply according to claim 1, characterized in that: Gaskets are respectively provided on the contact surfaces of the sealing rubber sleeve with the top limit nut and the bottom limit nut.

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