阅读说明：本技术 一种双重密封石油管道用阀门 (Valve for double-sealing petroleum pipeline ) 是由 程春风 曹恒楼 周皓宸 顾亚明 于 2020-11-18 设计创作，主要内容包括：本发明公开了一种双重密封石油管道用阀门,包括阀体、第一阀座、第二阀座、第一阀板、第二阀板、液压伸缩缸、阀杆、上活动板和下活动板,第一阀座具有第一外圆柱形孔和第一内圆柱形孔,第一阀板能够在所述第一内圆柱形孔内滑动,第一阀板固定有第一连接块,第一连接块和所述上活动板之间连接有第一上连接杆,第二阀座具有第二外圆柱形孔和第二内圆柱形孔,第二阀板能够在第二内圆柱形孔内滑动,第二阀板固定有第二连接块,第二连接块和上活动板之间连接有第二上连接杆,阀杆的顶端与所述液压伸缩缸连接。本发明的阀门能够实现双重密封。(The invention discloses a valve for a double-sealing petroleum pipeline, which comprises a valve body, a first valve seat, a second valve seat, a first valve plate, a second valve plate, a hydraulic telescopic cylinder, a valve rod, an upper movable plate and a lower movable plate, wherein the first valve seat is provided with a first outer cylindrical hole and a first inner cylindrical hole, the first valve plate can slide in the first inner cylindrical hole, the first valve plate is fixedly provided with a first connecting block, a first upper connecting rod is connected between the first connecting block and the upper movable plate, the second valve seat is provided with a second outer cylindrical hole and a second inner cylindrical hole, the second valve plate can slide in the second inner cylindrical hole, the second valve plate is fixedly provided with a second connecting block, a second upper connecting rod is connected between the second connecting block and the upper movable plate, and the top end of the valve rod is connected with the hydraulic telescopic cylinder. The valve of the invention can realize double sealing.)

1. A valve for a double-sealing petroleum pipeline is characterized by comprising a valve body, a first valve seat, a second valve seat, a first valve plate, a second valve plate, a hydraulic telescopic cylinder, a valve rod, an upper movable plate and a lower movable plate, wherein the valve body is provided with an inlet and an outlet, the first valve seat and the second valve seat are fixed in the valve body, the first valve seat is cylindrical, the outer side wall of the first valve seat is fixed with the inner side wall of the valve body, the first valve seat is provided with a first outer cylindrical hole and a first inner cylindrical hole connected with the first outer cylindrical hole, the diameter of the first inner cylindrical hole is larger than that of the first outer cylindrical hole, the first valve plate is circular, the diameter of the first valve plate is equal to that of the first inner cylindrical hole, the first valve plate can slide in the first inner cylindrical hole, and a first annular sealing gasket is fixed at the end part, close to the first outer cylindrical hole, of the first inner cylindrical hole, the first valve plate is provided with a plurality of first through holes, when the first valve plate abuts against the first annular sealing gasket, the first through holes are all sealed by the first annular sealing gasket, a first connecting block is fixed on the end face, away from the first outer cylindrical hole, of the first valve plate, a first upper connecting rod is connected between the first connecting block and the upper movable plate, one end of the first upper connecting rod is hinged with the upper movable plate, the other end of the first upper connecting rod is hinged with the first connecting block, a first lower connecting rod is connected between the first connecting block and the lower movable plate, one end of the first lower connecting rod is hinged with the first connecting block, and the other end of the first lower connecting rod is hinged with the lower movable plate; the second valve seat is cylindrical, the outer side wall of the second valve seat is fixed to the inner side wall of the valve body, the second valve seat is provided with a second outer cylindrical hole and a second inner cylindrical hole connected with the second outer cylindrical hole, the diameter of the second inner cylindrical hole is larger than that of the second outer cylindrical hole, the second valve plate is circular, the diameter of the second valve plate is equal to that of the second inner cylindrical hole, the second valve plate can slide in the second inner cylindrical hole, a second annular sealing gasket is fixed to the end portion, close to the second outer cylindrical hole, of the second inner cylindrical hole, the second valve plate is provided with a plurality of second through holes, when the second valve plate and the second annular sealing gasket are abutted, the plurality of second through holes are all closed by the second annular sealing gasket, and a second connecting block is fixed to the end face, far away from the second outer cylindrical hole, of the second valve plate, a second upper connecting rod is connected between the second connecting block and the upper movable plate, one end of the second upper connecting rod is hinged with the upper movable plate, the other end of the second upper connecting rod is hinged with the second connecting block, a second lower connecting rod is connected between the second connecting block and the lower movable plate, one end of the second lower connecting rod is hinged with the second connecting block, and the other end of the second lower connecting rod is hinged with the lower movable plate; a compression spring is fixed between the lower movable plate and the valve body; go up the fly leaf with the valve rod is connected, the valve body have by the third through-hole that the valve rod passed, the third through-hole with the sealing component of ring cylindricality has between the valve rod, sealing component with the lateral wall fixed connection of third through-hole, the top of valve rod with hydraulic telescoping cylinder connects, hydraulic telescoping cylinder can drive the valve rod is in slide from top to bottom in the sealing component.

2. The valve for a dual seal petroleum pipeline of claim 1, wherein the first upper connecting rod, the first lower connecting rod, the second upper connecting rod and the second lower connecting rod are equal in length.

3. The valve of claim 1, wherein the first plurality of through holes are distributed in a circular pattern.

4. The valve of claim 1, wherein the second plurality of through holes are distributed in a circular pattern.

5. The valve for the dual seal petroleum pipeline of claim 1, wherein the first annular seal is annular and has an inner diameter equal to the diameter of the first outer cylindrical bore.

6. The valve of claim 1, wherein the second annular seal is annular and has an inner diameter equal to the diameter of the second outer cylindrical bore.

7. The dual seal petroleum valve of claim 1, wherein said upper movable plate and said lower movable plate are both rectangular plates.

8. The valve for a dual seal petroleum pipeline of claim 1, wherein the axes of the first outer cylindrical bore, the first inner cylindrical bore, the second outer cylindrical bore and the second inner cylindrical bore are collinear.

Technical Field

The invention relates to the field of valves, in particular to a valve for a double-seal petroleum pipeline.

Background

Valves are commonly used in various pipes, mainly for cutting or adjusting the opening of the pipe. Valves are often needed in the refining and exploitation of petroleum, and because petroleum is flammable substances, the requirements on the valves are higher, and adverse effects can be caused once leakage and other conditions occur or pipelines are not cut off timely. The existing valves only have a single valve plate, and the pipeline cutting effect is poor due to insufficient sealing performance of the valve plate.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a valve for a double-seal petroleum pipeline.

The technical scheme is as follows: a valve comprises a valve body, a first valve seat, a second valve seat, a first valve plate, a second valve plate, a hydraulic telescopic cylinder, a valve rod, an upper movable plate and a lower movable plate, wherein the valve body is provided with an inlet and an outlet, the first valve seat and the second valve seat are fixed in the valve body, the first valve seat is cylindrical, the outer side wall of the first valve seat is fixed with the inner side wall of the valve body, the first valve seat is provided with a first outer cylindrical hole and a first inner cylindrical hole connected with the first outer cylindrical hole, the diameter of the first inner cylindrical hole is larger than that of the first outer cylindrical hole, the first valve plate is circular, the diameter of the first valve plate is equal to that of the first inner cylindrical hole, the first valve plate can slide in the first inner cylindrical hole, and a first annular sealing gasket is fixed at the end part, close to the first outer cylindrical hole, of the first inner cylindrical hole, the first valve plate is provided with a plurality of first through holes, when the first valve plate abuts against the first annular sealing gasket, the first through holes are all sealed by the first annular sealing gasket, a first connecting block is fixed on the end face, away from the first outer cylindrical hole, of the first valve plate, a first upper connecting rod is connected between the first connecting block and the upper movable plate, one end of the first upper connecting rod is hinged with the upper movable plate, the other end of the first upper connecting rod is hinged with the first connecting block, a first lower connecting rod is connected between the first connecting block and the lower movable plate, one end of the first lower connecting rod is hinged with the first connecting block, and the other end of the first lower connecting rod is hinged with the lower movable plate; the second valve seat is cylindrical, the outer side wall of the second valve seat is fixed to the inner side wall of the valve body, the second valve seat is provided with a second outer cylindrical hole and a second inner cylindrical hole connected with the second outer cylindrical hole, the diameter of the second inner cylindrical hole is larger than that of the second outer cylindrical hole, the second valve plate is circular, the diameter of the second valve plate is equal to that of the second inner cylindrical hole, the second valve plate can slide in the second inner cylindrical hole, a second annular sealing gasket is fixed to the end portion, close to the second outer cylindrical hole, of the second inner cylindrical hole, the second valve plate is provided with a plurality of second through holes, when the second valve plate and the second annular sealing gasket are abutted, the plurality of second through holes are all closed by the second annular sealing gasket, and a second connecting block is fixed to the end face, far away from the second outer cylindrical hole, of the second valve plate, a second upper connecting rod is connected between the second connecting block and the upper movable plate, one end of the second upper connecting rod is hinged with the upper movable plate, the other end of the second upper connecting rod is hinged with the second connecting block, a second lower connecting rod is connected between the second connecting block and the lower movable plate, one end of the second lower connecting rod is hinged with the second connecting block, and the other end of the second lower connecting rod is hinged with the lower movable plate; a compression spring is fixed between the lower movable plate and the valve body; go up the fly leaf with the valve rod is connected, the valve body have by the third through-hole that the valve rod passed, the third through-hole with the sealing component of ring cylindricality has between the valve rod, sealing component with the lateral wall fixed connection of third through-hole, the top of valve rod with hydraulic telescoping cylinder connects, hydraulic telescoping cylinder can drive the valve rod is in slide from top to bottom in the sealing component.

Further, the length of the first upper connecting rod, the length of the first lower connecting rod, the length of the second upper connecting rod and the length of the second lower connecting rod are equal.

Furthermore, a plurality of first through-holes are distributed in a circular ring shape.

Furthermore, a plurality of second through holes are distributed in a circular ring shape.

Further, the first annular sealing gasket is in a ring shape, and the inner diameter of the first annular sealing gasket is equal to the diameter of the first outer cylindrical hole.

Further, the second annular seal pad is annular in shape, and has an inner diameter equal to the diameter of the second outer cylindrical bore.

Further, the upper movable plate and the lower movable plate are rectangular plates.

Further, the axes of the first outer cylindrical bore, the first inner cylindrical bore, the second outer cylindrical bore, and the second inner cylindrical bore are collinear.

Has the advantages that: the valve provided by the invention is provided with the two valve plates, the sealing effect is good, and even if the sealing performance of one valve plate is in problem, the cutting-off of a pipeline is not influenced when the valve is closed.

Drawings

FIG. 1 is a schematic view of a valve when open;

FIG. 2 is a schematic view of the valve closed;

fig. 3 is a schematic view of the first and second valve plates.

Detailed Description

Reference numerals: 1, a valve body; 2, a hydraulic telescopic cylinder; 3, a valve rod; 4 a sealing member of a circular cylindrical shape; 5, an upper movable plate; 5.1 a first upper connecting rod; 5.2 a second upper connecting rod; 6 compressing the spring; 7, a movable plate is arranged; 7.1 a first lower connecting rod; 7.2 a second lower connecting rod; 11 a first valve seat; 11.1 a first outer cylindrical bore; 11.2 a first inner cylindrical bore; 11.3 a first annular seal; 11.4 a first valve plate; 11.5 a first via; 11.6 first connecting block; 12 a second valve seat; 12.1 a second outer cylindrical bore; 12.2 a second inner cylindrical bore; 12.3 a second annular gasket; 12.4 a second valve plate; 12.5 second vias; 12.6 second connecting block.

A valve comprises a valve body 1, a first valve seat 11, a second valve seat 12, a first valve plate 11.4, a second valve plate 12.4, a hydraulic telescopic cylinder 2, a valve rod, an upper movable plate 5 and a lower movable plate 7, wherein the valve body is provided with an inlet and an outlet, the first valve seat and the second valve seat are fixed in the valve body, the first valve seat is cylindrical, the outer side wall of the first valve seat is fixed with the inner side wall of the valve body, the first valve seat is provided with a first outer cylindrical hole and a first inner cylindrical hole 11.2 connected with the first outer cylindrical hole 11.1, the diameter of the first inner cylindrical hole is larger than that of the first outer cylindrical hole, the first valve plate 11.4 is circular, the diameter of the first valve plate is equal to that of the first inner cylindrical hole, the first valve plate can slide in the first inner cylindrical hole, and a first annular sealing gasket is fixed at the end part, close to the first outer cylindrical hole, the first valve plate is provided with a plurality of first through holes 11.5, when the first valve plate is abutted against the first annular sealing gasket, the first through holes are all sealed by the first annular sealing gasket 11.3, a first connecting block is fixed on the end face, away from a first outer cylindrical hole, of the first valve plate, a first upper connecting rod is connected between the first connecting block and the upper movable plate, one end of the first upper connecting rod is hinged to the upper movable plate 5, the other end of the first upper connecting rod is hinged to the first connecting block, a first lower connecting rod 7.1 is connected between the first connecting block 11.6 and the lower movable plate 7, one end of the first lower connecting rod is hinged to the first connecting block, and the other end of the first lower connecting rod is hinged to the lower movable plate; the second valve seat is cylindrical, the outer side wall of the second valve seat is fixed with the inner side wall of the valve body, the second valve seat is provided with a second outer cylindrical hole and a second inner cylindrical hole connected with the second outer cylindrical hole, the diameter of the second inner cylindrical hole is larger than that of the second outer cylindrical hole, the second valve plate is circular, the diameter of the second valve plate is equal to that of the second inner cylindrical hole, the second valve plate can slide in the second inner cylindrical hole, a second annular sealing gasket is fixed at the end part, close to the second outer cylindrical hole, of the second inner cylindrical hole, the second valve plate is provided with a plurality of second through holes, when the second valve plate and the second annular sealing gasket are abutted, the plurality of second through holes are all closed by the second annular sealing gasket, and a second connecting block 12.6 is fixed on the end face, far away from the second outer cylindrical hole, of the second valve plate 12.4, a second upper connecting rod 5.2 is connected between the second connecting block and the upper movable plate, one end of the second upper connecting rod is hinged with the upper movable plate, the other end of the second upper connecting rod is hinged with the second connecting block, a second lower connecting rod 7.2 is connected between the second connecting block and the lower movable plate 7, one end of the second lower connecting rod is hinged with the second connecting block, and the other end of the second lower connecting rod is hinged with the lower movable plate; a compression spring 6 is fixed between the lower movable plate 7 and the valve body; the upper movable plate is connected with the valve rod, the valve body is provided with a third through hole which is penetrated by the valve rod, a circular cylindrical sealing part 4 is arranged between the third through hole and the valve rod 3, the top end of the valve rod is connected with the hydraulic telescopic cylinder 2, and the hydraulic telescopic cylinder 2 can drive the valve rod to slide up and down in the sealing part. The length of the first upper connecting rod, the length of the first lower connecting rod, the length of the second upper connecting rod and the length of the second lower connecting rod are equal. The plurality of first through holes are distributed in a circular ring shape. The second through holes are distributed in a circular ring shape. The first annular sealing gasket is in a ring shape, and the inner diameter of the first annular sealing gasket is equal to the diameter of the first outer cylindrical hole. The second annular seal is annular in shape and has an inner diameter equal to the diameter of the second outer cylindrical bore. The upper movable plate and the lower movable plate are rectangular plates. The axes of the first outer cylindrical hole, the first inner cylindrical hole, the second outer cylindrical hole and the second inner cylindrical hole are collinear.

According to the valve disclosed by the invention, as shown in fig. 1 and 2, when the valve rod moves upwards, the first valve plate is far away from the first annular sealing gasket, and the second valve plate is far away from the second annular sealing gasket, so that the inlet and the outlet of the valve body are communicated; when the valve rod moves downwards to the position shown in figure 2, the first through hole and the second through hole are closed, so that the inlet and the outlet of the valve are not communicated. And the upward acting force of the compression spring and the downward acting force of the valve rod have better matching and sealing effects of the first valve plate, the second valve plate, the first annular sealing gasket and the annular sealing gasket under the opposite action of the upper movable plate and the lower movable plate.

While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.