Large-diameter single-plate gas gate valve for tapping under pressure

Abstract

The large-caliber single-plate gas gate valve comprises a gate bin and a gate frame which are arranged in a butt joint mode, a cavity between the gate bin and the gate frame is communicated and connected, through holes are formed in the two side faces of the gate frame, butt joint flanges are correspondingly installed on the through holes in the two sides, sliding ways are correspondingly arranged on the two side walls in a cavity between the gate frame and the gate valve, and the sliding ways are connected with the gate bin. A valve plate is slidably connected between the slideways on the two sides, a telescopic part communicated with the interior of the gate bin is arranged at the rear end of the gate bin, and the telescopic end of the telescopic part is fixedly connected with the valve plate, so that the service life of the valve plate is prolonged, and the sliding stability of the valve plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve equipment, in particular to a large-diameter single-plate gas gate valve for pressure-opening. Background Art

[0002] Hot tapping is a safe, environmentally friendly, economical and efficient in-service pipeline maintenance and repair technology. It is suitable for the normal maintenance and renovation of pipelines with various media such as water, crude oil, refined oil, chemical media, natural gas, etc., as well as emergency repairs of accidents.

[0003] During the construction and installation of pressurized tapping, the gate valve is an important connecting component and control component between the short pipe on the main pipeline and the branch pipeline, so as to control the opening and closing of gas between the main pipeline and the branch pipeline.

[0004] In the existing technology, the gate valve used in the pressure opening project is usually an embedded structure, and the outer wall of the valve plate is completely in contact with the inner wall of the gate chamber. When it is pulled out and retracted, it will cause a lot of wear on the valve plate, thereby reducing the service life of the valve plate. When the wear reaches a certain extent, there is a risk of gas leakage during use, so there is a technical defect that urgently needs to be improved. Utility Model Content

[0005] In view of the above problems, the present invention provides a large-diameter single-plate gas gate valve for pressure-opening, which is used to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a large-diameter single-plate gas gate valve for pressure opening, including a gate chamber and a gate frame that are docked with each other, the cavity between the gate chamber and the gate frame is conductively connected, through holes are opened on both sides of the gate frame, and docking flanges are correspondingly installed on the through holes on both sides, slides are correspondingly provided on the two side walls of the cavity between the gate frame and the gate valve, and a valve plate is slidably connected between the slides on both sides, and a telescopic part that communicates with the interior of the gate chamber is provided at the rear end of the gate chamber, and the telescopic end of the telescopic part is fixedly connected to the valve plate.

[0007] Preferably, the gate chamber and the gate frame are arched cavity structures with the same structure, the gate chamber and the gate frame are butt-jointed via one end with a flat bottom, and the ends of the gate chamber and the gate valve that are farther away are both arc-shaped structures.

[0008] Preferably, the slideway is a rod structure that is parallel to each other and is attached to the inner wall of the cavity between the gate chamber and the gate frame.

[0009] Preferably, support wings protrude from both sides of the valve plate, and the valve plate is slidably arranged in the slideways on both sides through the support wings on both sides.

[0010] Preferably, the telescopic member is a hydraulic cylinder, and the telescopic end of the telescopic member extends into the gate chamber and is fixedly connected to the valve plate.

[0011] The beneficial effects of the present invention are as follows: the present invention adds a slideway composed of two rods parallel to each other on both side walls of the cavity in which the gate chamber and the gate frame are conductively connected, thereby providing a stable sliding motion track for the valve plate slidingly arranged between the gate chamber and the gate frame cavity. At the same time, the contact between the valve plate and the upper and lower end surfaces of the gate chamber and the gate frame cavity is increased, thereby reducing the wear between the valve plate and the gate chamber and the gate frame, and increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the valve plate in this utility model.

[0015] Notes in the figure

[0016] 1. Gate chamber; 2. Gate frame; 201. Through hole; 202. Flange; 203. Slideway; 3. Telescopic member; 4. Valve plate; 401. Support wing. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Combine Figure 1-3The utility model is a large-diameter single-plate gas gate valve for pressure-operated opening, comprising a gate chamber 1 and a gate frame 2 that are butt-jointed with each other. The gate chamber 1 and the gate frame 2 are connected in a cavity. Through holes 201 are provided on both sides of the gate frame 2. Butt flanges 202 are correspondingly installed on the through holes 201 on both sides. These flanges 202 are used to connect the valve to the pipeline system. Slideways 203 are correspondingly provided on the two side walls of the cavity between the gate frame 2 and the gate valve. A valve plate 4 is slidably connected between the slideways 203 on both sides. The design of the slideway 203 ensures that the valve plate 4 can slide smoothly inside the valve. A telescopic member 3 communicating with the interior of the gate chamber 1 is provided at the rear end of the gate chamber 1. The telescopic end of the telescopic member 3 is fixedly connected to the valve plate 4. The gate chamber 1 and the gate frame 2 are arched cavity structures with the same structure. The gate chamber 1 and the gate frame 2 are docked through one end with a flat bottom. The gate chamber 1 and the gate valve are both arc-shaped structures at the end farther away. The slide 203 is two rod structures parallel to each other and attached to the inner wall of the cavity between the gate chamber 1 and the gate frame 2. Support wings 401 protrude on both sides of the valve plate 4. The valve plate 4 is slidably set in the slides 203 on both sides through the support wings 401 on both sides. The telescopic member 3 is a hydraulic cylinder. The telescopic end of the telescopic member 3 extends into the gate chamber 1 and is fixedly connected to the valve plate 4.

[0019] Furthermore, by adding a slideway 203 composed of two parallel rods on the two side walls of the cavity connecting the gate chamber 1 and the gate frame 2, a stable sliding motion track is provided for the valve plate 4 slidingly set between the gate chamber 1 and the gate frame 2 cavity. At the same time, the contact between the valve plate 4 and the upper and lower end surfaces of the gate chamber 1 and the gate frame 2 cavity is increased, thereby reducing the wear between the valve plate 4 and the gate chamber 1 and the gate frame 2, and increasing the service life of the equipment.

[0020] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A large-diameter single-plate gas gate valve for pressure tapping, comprising a gate chamber (1) and a gate frame (2) that are connected to each other, characterized in that: The gate chamber (1) and the gate frame (2) are connected to each other through the cavity, and through holes (201) are provided on both sides of the gate frame (2). Connecting flanges (202) are installed on the through holes (201) on both sides. Slideways (203) are provided on the two side walls of the cavity between the gate frame (2) and the gate valve, and a valve plate (4) is slidably connected between the slideways (203) on both sides. A telescopic member (3) communicating with the interior of the gate chamber (1) is provided at the rear end of the gate chamber (1), and the telescopic end of the telescopic member (3) is fixedly connected to the valve plate (4).

2. A large-diameter single-plate gas gate valve for pressure tapping according to claim 1, characterized in that: The gate chamber (1) and the gate frame (2) are of the same arched cavity structure. The gate chamber (1) and the gate frame (2) are butt-jointed via one end with a flat bottom. The end of the gate chamber (1) that is farther from the gate valve is of an arc-shaped structure.

3. The large-diameter single-plate gas gate valve for pressure tapping according to claim 1, characterized in that: The slideway (203) is a rod structure that is parallel to each other and is attached to the inner wall of the cavity between the gate chamber (1) and the gate frame (2).

4. The large-diameter single-plate gas gate valve for pressure tapping according to claim 1, characterized in that: Support wings (401) protrude from both sides of the valve plate (4), and the valve plate (4) is slidably arranged in the slideways (203) on both sides via the support wings (401) on both sides.

5. The large-diameter single-plate gas gate valve for pressure tapping according to claim 1, characterized in that: The telescopic member (3) is a hydraulic cylinder, and the telescopic end of the telescopic member (3) is extended into the gate chamber (1) and is fixedly connected to the valve plate (4).

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