CN211010127U - A ball valve bonnet structure capable of online emergency grease injection - Google Patents

Abstract

A ball valve cover structure capable of realizing on-line emergency grease injection comprises a valve cover, a grease injection groove, a sealing grease injection valve, a check valve and a grease injection channel. The utility model discloses a grease injection groove, grease injection channel, check valve, sealed fat injection channel, valve body and valve gap, the sealed fat injection valve that is equipped with in the grease injection groove, the grease inlet of sealed fat injection valve lower extreme fixed connection check valve, the play fat mouth of check valve links to each other with the one end of annotating the fat passageway, and the other end of annotating the fat passageway and the sealed face looks butt between valve body, the valve gap, the utility model discloses an establish the grease injection groove in the valve gap, annotate the fat passageway to set up sealed fat injection valve, check valve in annotating the fat inslot, to annotating sealed fat in the sealed fat injection valve, sealed fat reachs the fat passageway and be full of whole notes fat passageway through the check valve, can prevent temporarily that the medium from continuing to leak away between valve body and the valve gap, strive for more time for pipeline device parking valve salvage, also can reduce because of the valve.

Description

A ball valve bonnet structure capable of online emergency grease injection

technical field

The utility model relates to a valve cover structure of a fixed ball valve, in particular to a valve cover structure of a ball valve capable of on-line emergency grease injection.

Background technique

As we all know, the valve is an important part of the fluid in the petroleum, chemical and natural gas pipeline transportation system. With the rapid development of modern industry, the ball valve has occupied a considerable part of the market with its advantages of rapid switching, small flow resistance and high pressure. , The three-piece side-mounted fixed ball valve has been widely used in modern industrial pipelines, but the three-piece side-mounted fixed ball valve is different from the gate valve and globe valve because of its structure and the three-piece side-mounted fixed ball valve in the pipeline. Due to the influence of temperature and other factors, the continuous change of the stress such as stretching and bending of the pipeline directly affects the sealing effect of the ball valve body and the bonnet. If the O-ring at the connection between the valve body and the bonnet is damaged or aged, plus Under the influence of pipeline stress, leakage will occur at the connection between the ball valve body and the bonnet, causing environmental pollution.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the utility model provides a ball valve valve cover structure that can be used for on-line emergency grease injection, including a valve cover, a grease injection tank, a sealing grease injection valve, a check valve, a grease injection channel, a valve body, Gaskets, O-rings.

The technical scheme adopted by the utility model to solve the problems of the prior art is as follows: a grease injection groove is vertically opened in the valve cover, an internal thread is processed in the grease injection groove, a sealing grease injection valve is arranged in the grease injection groove, and the sealing grease is injected into the valve cover. The valve is screwed into the grease injection tank by means of threads, the lower end of the sealing grease injection valve is fixedly connected to the grease inlet of the check valve, and the grease outlet of the check valve is connected to one end of the grease injection channel, and the grease injection channel is L-shaped. The other end of the grease injection channel is in contact with the sealing surface between the valve body and the valve cover. A sealing gasket is arranged between the valve cover and the valve body in the vertical direction. There is an O-ring in the horizontal direction.

The beneficial effects of the utility model are: by opening a grease injection groove and a grease injection channel in the valve cover, and setting a sealing grease injection valve and a check valve in the grease injection groove, when the O-ring at the connection between the valve body and the valve cover is damaged Or the aging causes leakage, the fireproof gasket at the connection of the valve body and the valve cover leaks under the influence of the pipeline stress, inject the sealing grease into the sealing grease injection valve, and the sealing grease reaches the grease injection channel through the check valve and fills the whole grease injection. The channel can temporarily prevent the medium from continuing to leak out between the valve body and the valve cover, buy more time for the pipeline installation to stop the valve repair, and also reduce the environmental pollution caused by the valve leakage.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure, 1. Bonnet, 2. Grease injection groove, 3. Grease injection valve, 4. Check valve, 5. Grease injection channel, 6. Valve body, 7. Sealing gasket, 8. O-ring.

Detailed ways

The utility model will be described in further detail below with reference to the accompanying drawings and embodiments. A ball valve valve cover structure that can be used for online emergency grease injection includes a valve cover 1, a grease injection tank 2, a sealing grease injection valve 3, and a check valve 4. , Grease injection channel 5, valve body 6, sealing gasket 7, O-ring 8, a grease injection groove 2 is vertically opened in the valve cover 1, the grease injection groove 2 is machined with internal threads, and the grease injection groove 2 is provided with There is a sealing grease injection valve 3. The sealing grease injection valve 3 is screwed into the grease injection tank 2 by means of threads. The lower end of the sealing grease injection valve 3 is fixedly connected to the grease inlet of the check valve 4, and the check valve 4 is used for grease injection. Reliable, avoid the backflow of sealing grease, the grease outlet of the check valve 4 is connected with one end of the grease injection channel 5, the grease injection channel 5 is arranged in an L shape, and the other end of the grease injection channel 5 is connected with the valve body 6 and the valve cover 1 The sealing surfaces between the valve cover 1 and the valve body 6 are in contact with each other, a sealing gasket 7 is arranged between the valve cover 1 and the valve body 6 in the vertical direction, and an O-ring 8 is arranged between the valve cover 1 and the valve body 6 in the horizontal direction. When the O-ring 8 at the connection between the valve body 6 and the bonnet 1 is damaged or leaks due to aging, the sealing gasket 7 at the connection between the valve body 6 and the bonnet 1 will leak under the influence of the pipeline stress. At this time, the on-site staff only It is necessary to inject sealing grease into the sealing grease injection valve 3. The sealing grease reaches the grease injection channel 5 through the check valve and fills the entire grease injection channel 5, which can temporarily prevent the medium from continuing to leak from the valve body 6 and the valve cover 1. It will take more time for the emergency repair of the stop valve of the pipeline installation, and will also reduce the environmental pollution caused by the leakage of the valve.

In the present invention, a grease injection groove 2 and a grease injection channel 5 are provided in the valve cover 1, and a sealing grease injection valve 3 and a check valve 4 are arranged in the grease injection groove 2. The O-ring 8 is damaged or aged to cause leakage, and the sealing gasket 7 at the connection of the valve body 6 and the valve cover 1 leaks under the influence of the pipeline stress. The sealing grease is injected into the sealing grease injection valve 3, and the sealing grease passes through the check valve. 4. Reaching the grease injection channel 5 and filling the entire grease injection channel 5, it can temporarily prevent the medium from continuing to leak out from between the valve body 6 and the valve cover 1, buy more time for the pipeline device to stop the valve for repair, and also reduce the damage caused by the outside of the valve. environmental pollution caused by leakage.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (3)

1. The utility model provides a can promptly annotate ball valve gap structure of fat on line, includes the valve gap, annotates the fat groove, seals fat filling valve, check valve, notes fat passageway, valve body, seal gasket, O type circle, its characterized in that: the grease injection valve is characterized in that a grease injection groove is vertically formed in the valve cover, internal threads are machined in the grease injection groove, a sealing grease injection valve is arranged in the grease injection groove, the lower end of the sealing grease injection valve is connected with a grease inlet of a check valve, a grease outlet of the check valve is connected with one end of a grease injection channel, the other end of the grease injection channel is abutted to a sealing surface between the valve body and the valve cover, a sealing gasket is arranged between the valve cover and the valve body in the vertical direction, and an O-shaped ring is arranged between the valve cover and the valve body in the.

2. An on-line emergency grease injection ball valve cover structure according to claim 1, wherein: the sealing grease injection valve is screwed into the grease injection groove in a threaded manner.

3. An on-line emergency grease injection ball valve cover structure according to claim 1, wherein the grease injection channel is L-shaped.

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