CN211951518U

CN211951518U - Fire-proof and leak-proof large-diameter ball valve

Info

Publication number: CN211951518U
Application number: CN202020458638.0U
Authority: CN
Inventors: 朱仲生
Original assignee: Anhui Jack Corrosion Resistant Pump Valve Co ltd
Current assignee: Anhui Jack Corrosion Resistant Pump Valve Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-11-17
Anticipated expiration: 2030-04-01

Abstract

The utility model provides a fireproof and leakproof large-diameter ball valve, which relates to the technical field of valves and comprises a valve body, a valve cover and a valve core, wherein the valve body is provided with a hollow convex neck, and a valve rod is arranged in the convex neck; the upper and lower both ends of case and the contact position of valve body are provided with the sealing washer, and the outside of sealing washer is provided with fire prevention ring, and the inside upper end both sides that are located the case of valve body are provided with the mounting groove, and annular pressing plate is installed at the inboard top of mounting groove, and the inboard that the case was kept away from to the mounting groove is closed horizontal installation and is had four supporting components, and the stripper plate is installed to supporting component's end. The utility model discloses in through the setting of sealing washer, can improve the sealing performance of whole ball valve, through the setting of fire prevention ring, can replace impaired sealing washer when the conflagration takes place, guarantee that whole ball valve still has the leakproofness at the conflagration, prevent to leak, whole utility model structure is simple, can prevent automatically when the conflagration from leaking the protection, guarantees the normal work of ball valve, and is safe effective, and the practicality is high.

Description

Fire-proof and leak-proof large-diameter ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a fire prevention prevents leaking heavy-calibre ball valve.

Background

The ball valve is one of the valves widely used, the working principle of the ball valve is the same as that of a plug valve, the valve is opened and closed by rotating a valve core, but the ball valve is lighter than the plug valve in opening and closing, has relatively small volume and can be made into a large-diameter ball valve. The ball valve has reliable sealing, simple structure and convenient maintenance, and the sealing surface and the ball body are always in a closed state and are not easy to be eroded by a medium, thereby being widely used in the industries of petroleum, chemical industry, metallurgy and the like.

The ball valve in the prior art generally has the sealing effect by arranging the sealing ring between the valve core and the valve body, but when a fire disaster happens, the sealing ring is made of non-metal materials and is easy to burn off, so that the ball valve has the leakage phenomenon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a large-diameter ball valve is prevented leaking in fire prevention to solve above-mentioned technical problem.

The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme to realize: a fireproof and leakproof large-caliber ball valve comprises a valve body, a valve cover and a valve core, wherein the valve cover is connected to one end of the valve body, the valve core is installed in the valve body, a hollow convex neck is arranged on the valve body, a valve rod is arranged in the convex neck, the valve rod is fixedly connected with the valve core, and a rotating handle is horizontally and fixedly installed at the upper end of the valve rod;

the upper and lower both ends of case and the contact position of valve body are provided with the sealing washer, and the outside of sealing washer is provided with the fire prevention ring, the inside upper end both sides that are located the case of valve body are provided with the mounting groove, and ring clamp is installed at the inboard top of mounting groove, and ring clamp and case contactless, and the upside contact of ring clamp and sealing washer and fire prevention ring, the inboard that the case was kept away from to the mounting groove is closed horizontal installation and is had four supporting components, and four supporting components distribute around the axis ring matrix of ring clamp, the stripper plate is installed to supporting component's end, and the medial surface and the fire prevention of stripper plate closely laminate.

Preferably, the extrusion plate is of a quarter-circle arc structure and is made of stainless steel.

Preferably, the supporting component is including the fixed sleeve, and the inside activity of fixed sleeve is provided with the backup pad, installs flexible gasbag between backup pad and the fixed sleeve, and flexible gasbag's inside is filled the helium, one side level fixed mounting that flexible gasbag was kept away from to the backup pad has compression spring, and compression spring keeps away from the horizontal fixedly connected with bracing piece of one end of backup pad, the outside fixed connection of stripper plate is terminal at the bracing piece.

Preferably, the fixing sleeve is fixedly mounted on the inner wall of the mounting groove.

Preferably, the telescopic airbag is made of high-temperature-resistant materials.

Preferably, the maximum extension length of the telescopic airbag after the gas inside the telescopic airbag is heated and expanded is 2.5 cm.

The utility model has the advantages that:

the sealing performance of the whole ball valve can be improved through the arrangement of the sealing ring, the sealing ring and the fire-proof ring can be tightly pressed in the same plane through the arrangement of the fire-proof ring when a fire disaster happens, the sealing ring can be ensured to have sealing performance in the fire disaster, leakage is prevented, when the sealing ring is melted at high temperature, the four extrusion plates extrude the fire-proof ring towards the direction of the valve core so as to replace the sealing ring, the arrangement of the supporting component can play a good supporting and protecting role in the fire disaster, and has a certain buffering function, the arrangement of the telescopic air bag can provide acting force for the extrusion plates, the tight combination of the fire-proof ring and the sealing ring is ensured, the structure of the whole utility model is simple, leakage-proof protection can be automatically carried out in the fire disaster, and the normal work of the ball valve is ensured, safe and effective, and high in practicability.

Drawings

Fig. 1 is a schematic structural view of a fire-proof and leak-proof large-diameter ball valve of the present invention;

FIG. 2 is a schematic view of a top view of the mounting groove of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the three-dimensional structure of the extrusion plate of the present invention;

FIG. 6 is a schematic structural view of the support assembly of the present invention;

reference numerals: 1-a valve body; 2-valve cover; 3-a valve core; 4-a convex neck; 5-valve stem; 6-sealing ring; 7-fireproof ring; 8-mounting grooves; 9-a support assembly; 91-fixing the sleeve; 92-a support plate; 93-a telescopic air bag; 94-a compression spring; 95-support bars; 10-an annular platen; 11-a stripper plate; 12-turn the handle.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-6, a fire-proof and leak-proof large-caliber ball valve comprises a valve body 1, a valve cover 2 and a valve core 3, wherein the valve cover 2 is connected to two ends of the valve body 1, the valve core 3 is installed in the valve body 1, a hollow convex neck 4 is arranged on the valve body 1, a valve rod 5 is arranged in the convex neck 4, the valve rod 5 is fixedly connected with the valve core 3, and a rotating handle 12 is horizontally and fixedly installed at the upper end of the valve rod 5;

the upper and lower both ends of case 3 and the contact position of valve body 1 are provided with sealing washer 6, the outside of sealing washer 6 is provided with fire prevention ring 7, the inside upper end both sides that are located case 3 of valve body 1 are provided with mounting groove 8, ring clamp 10 is installed at the inboard top of mounting groove 8, ring clamp 10 and case 3 contactless, and the upside contact of ring clamp 10 and sealing washer 6 and fire prevention ring 7, horizontal installation has four supporting component 9 on the inboard that case 3 was kept away from to mounting groove 8 closes, and four supporting component 9 distribute around the axis ring matrix of ring clamp 10, stripper plate 11 is installed to supporting component 9's end, and the medial surface of stripper plate 11 closely laminates with fire prevention ring 7.

The supporting component 9 comprises a fixing sleeve 91, a supporting plate 92 is movably arranged in the fixing sleeve 91, an expansion airbag 93 is installed between the supporting plate 92 and the fixing sleeve 91, helium is filled in the expansion airbag 93, a compression spring 94 is fixedly installed on one side of the supporting plate 92 far away from the expansion airbag 93, a supporting rod 95 is fixedly connected to one end of the compression spring 94 far away from the supporting plate 92, and the outer side of the extrusion plate 11 is fixedly connected to the tail end of the supporting rod 95.

The working principle is as follows: when a fire occurs, because of high temperature, the sealing ring 6 on the outer side of the valve core 3 cannot resist high temperature, and is damaged or even melted, at this time, because of the high temperature of the fire, helium filled in the telescopic airbag 93 expands in volume to drive the telescopic airbag 93 to extend, so that the support plate 92 can move towards one side of the valve core 3 in the fixed sleeve 91, the support plate 92 drives the compression spring 94 and the support rod 95 to move, so as to tightly press the extrusion plate 11 on the fireproof ring 7, because of the arrangement of the annular pressure plate 10, the sealing ring 6 and the fireproof ring 7 can be tightly pressed in the same plane, when the sealing ring 6 is melted at high temperature, the four extrusion plates 11 extrude the fireproof ring 7 towards the direction of the valve core 3, so as to replace the sealing ring 6, tightly attach to the contact position of the valve core 3 and the valve body 1, so as to achieve a good sealing effect, thereby ensuring, the whole ball valve can work normally without leakage.

After the fire is extinguished, the temperature of the whole ball valve is gradually recovered to be normal, a main switch of a pipeline where the ball valve is located is closed, and then the damaged sealing ring 6 in the single ball valve is maintained, so that the normal use of the ball valve is ensured.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fire prevention prevents leaking heavy-calibre ball valve, includes valve body (1), valve gap (2) and case (3), its characterized in that:

the valve cover (2) is connected to two ends of the valve body (1), the valve core (3) is installed in the valve body (1), a hollow convex neck (4) is arranged on the valve body (1), a valve rod (5) is arranged in the convex neck (4), the valve rod (5) is fixedly connected with the valve core (3), and a rotating handle (12) is horizontally and fixedly installed at the upper end of the valve rod (5);

sealing rings (6) are arranged at the contact positions of the upper end and the lower end of the valve core (3) and the valve body (1), a fireproof ring (7) is arranged at the outer side of each sealing ring (6), mounting grooves (8) are arranged in the valve body (1) and positioned at two sides of the upper end of the valve core (3), an annular pressure plate (10) is mounted at the top of the inner side of each mounting groove (8), the annular pressure plate (10) is not in contact with the valve core (3), and the annular pressure plate (10) is contacted with the upper sides of the sealing ring (6) and the fireproof ring (7), four supporting components (9) are horizontally arranged on the inner side of the mounting groove (8) far away from the valve core (3), and the four supporting components (9) are distributed in an annular matrix around the central axis of the annular pressure plate (10), an extrusion plate (11) is installed at the tail end of the supporting component (9), and the inner side face of the extrusion plate (11) is tightly attached to the fireproof ring (7).

2. A fire and leak resistant large caliber ball valve as defined in claim 1, wherein: the extrusion plate (11) is of a quarter-circle arc-shaped structure and is made of stainless steel.

3. A fire and leak resistant large caliber ball valve as defined in claim 1, wherein: supporting component (9) is including fixed sleeve (91), and the inside activity of fixed sleeve (91) is provided with backup pad (92), installs flexible gasbag (93) between backup pad (92) and fixed sleeve (91), and the inside of flexible gasbag (93) is filled with the helium, the horizontal fixed mounting in one side of keeping away from flexible gasbag (93) in backup pad (92) has compression spring (94), and the horizontal fixedly connected with bracing piece (95) of one end of backup pad (92) are kept away from in compression spring (94), the outside fixed connection of stripper plate (11) is terminal at bracing piece (95).

4. A fire and leak resistant large caliber ball valve as defined in claim 3, wherein: the fixed sleeve (91) is fixedly arranged on the inner wall of the mounting groove (8).

5. A fire and leak resistant large caliber ball valve as defined in claim 3, wherein: the telescopic air bag (93) is made of high-temperature-resistant materials.

6. A fire and leak resistant large caliber ball valve as defined in claim 3, wherein: after the gas in the telescopic air bag (93) is heated and expanded, the maximum extension length of the telescopic air bag (93) is 2.5 cm.