Leakage-proof nitrogen-sealed valve

Abstract

The anti-leakage nitrogen-sealed valve is characterized by comprising a nitrogen-sealed valve body, mounting parts, an inserting piece, a sealing gasket A, an inserting part and a sealing gasket B. The mounting parts are connected to the two ends of the nitrogen-sealed valve body, a plurality of mounting holes are formed in the mounting parts, and the inserting piece, the sealing gasket A, the inserting part and the sealing gasket B are sequentially arranged on the mounting parts from inside to outside. Aiming at the problem that gas is easy to leak at the joint of the nitrogen-sealed valve and the connecting pipe, the sealing performance of the connection of the nitrogen-sealed valve and the connecting pipe is enhanced by arranging a plurality of layers of sealing structures, and the applicability of the nitrogen-sealed valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen sealing valves, in particular to an anti-leakage nitrogen sealing valve. Background Art

[0002] The nitrogen sealing device is mainly used on the top of the storage tank to maintain a slight positive pressure in the storage tank, isolate the material from the outside world, reduce the volatilization and waste of the material, and protect the safety of the storage tank. The nitrogen sealing valve does not require external energy and uses the energy of the medium to be adjusted as the power source. A pressure stabilization device that automatically controls the flow of the valve medium to keep the pressure behind the valve constant. It is now widely used in natural gas extraction and transportation with continuous gas delivery, city gas, and industrial production departments such as metallurgy, petroleum, and chemical industry. Among them, the connection between the nitrogen sealing valve and the connecting pipe is prone to loose connection and gas leakage, and gas leakage is prone to cause some dangers and hidden dangers. Therefore, it is necessary to propose a leak-proof nitrogen sealing valve. Utility Model Content

[0003] In view of the above existing technical problems, the utility model provides a leak-proof nitrogen sealing valve, which is characterized by comprising a nitrogen sealing valve body, a mounting portion, a plug, a sealing gasket A, a plug-in portion, and a sealing gasket B. The two ends of the nitrogen sealing valve body are connected with the mounting portion, and the mounting portion is provided with a plurality of mounting holes. The mounting portion is provided with a plug, a sealing gasket A, a plug-in portion, and a sealing gasket B in sequence from the inside to the outside;

[0004] The inserts are arranged at intervals;

[0005] The sealing gasket A and the sealing gasket B are of the same height, and the plug-in portion and the sealing gasket A and the sealing gasket B are of different heights.

[0006] Beneficial effects of the utility model:

[0007] The insert of the utility model can be inserted in a staggered manner with the insert on the connector of the connecting pipe, forming a first layer of sealing effect. During the docking and insertion process, the sealing gasket A, the plug-in part, and the sealing gasket B on the nitrogen sealing valve body are plugged into the gap and the sealing gasket on the connector, thereby sealing the nitrogen sealing valve body and the connecting pipe, further strengthening the sealing of the nitrogen sealing valve and reducing the possibility of gas leakage. Finally, the mounting part of the nitrogen sealing valve body corresponds to the mounting part on the connector, and is fastened by screws passing through the mounting holes of the mounting part. In view of the problem that gas is easily leaked at the connection between the nitrogen sealing valve and the connecting pipe, the utility model strengthens the sealing of the connection between the two by setting a multi-layer sealing structure, thereby improving the applicability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the overall structure of an anti-leakage nitrogen sealing valve of the utility model;

[0009] Figure 2 It is a partial structural schematic diagram of a leakage-proof nitrogen sealing valve of the utility model;

[0010] As shown in the figure: 1. Nitrogen sealing valve body, 2. Mounting part, 3. Mounting hole, 4. Insert, 5. Sealing gasket A, 6. Connecting part, 7. Sealing gasket B, 8. Connector, 9. Connecting pipe. DETAILED DESCRIPTION

[0011] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0013] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] Example 1

[0015] As shown in the figure, an anti-leakage nitrogen sealing valve is characterized in that it includes a nitrogen sealing valve body 1, a mounting portion 2, a plug 4, a sealing gasket A5, a plug-in portion 6, and a sealing gasket B7. The two ends of the nitrogen sealing valve body 1 are connected to the mounting portion 2, and a plurality of mounting holes 3 are opened on the mounting portion 2. The plug 4, the sealing gasket A5, the plug-in portion 6, and the sealing gasket B7 are sequentially arranged on the mounting portion 2 from the inside to the outside;

[0016] The inserts 4 are arranged at intervals;

[0017] The sealing gasket A5 and the sealing gasket B7 have the same height, while the plug-in portion 6 and the sealing gasket A5 and the sealing gasket B7 have different heights.

[0018] Example 2

[0019] When using the utility model, the insert 4 on the nitrogen sealing valve body 1 and the insert on the connector 8 of the connecting pipe 9 are inserted alternately and correspondingly. In this process, the sealing gasket A5, the plug-in portion 6, and the sealing gasket B7 on the nitrogen sealing valve body 1 are plugged into the gap and the sealing gasket on the connector 8. At the same time, the mounting portion 2 of the nitrogen sealing valve body 1 corresponds to the mounting portion on the connector 8, and finally a screw is used to pass through the mounting hole 3 of the mounting portion 2 for fastening.

[0020] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A leak-proof nitrogen sealing valve, characterized in that The invention comprises a nitrogen sealing valve body, a mounting part, an insert, a sealing gasket A, a plug-in part and a sealing gasket B. The two ends of the nitrogen sealing valve body are connected with the mounting parts, a plurality of mounting holes are opened on the mounting parts, and the mounting parts are provided with the insert, the sealing gasket A, the plug-in part and the sealing gasket B in sequence from the inside to the outside.

2. The anti-leakage nitrogen sealing valve according to claim 1, characterized in that: The inserts are arranged at intervals.

3. The anti-leakage nitrogen sealing valve according to claim 1, characterized in that: The sealing gasket A and the sealing gasket B are of the same height, and the plug-in portion and the sealing gasket A and the sealing gasket B are of different heights.

Images