阅读说明：本技术 一种超高压截止阀 (ultrahigh pressure stop valve ) 是由 张平宽 张宇尧 李登超 裴文超 申奥 李启航 于 2019-09-17 设计创作，主要内容包括：本发明属于截止阀技术领域,具体涉及一种超高压截止阀,包括阀体,所述阀体的中部设有高压管路,所述阀体的内部设有阀芯,所述阀芯内嵌有密封组件,所述密封组件包括密封组件Ⅰ和密封组件Ⅱ,所述阀芯通过阀杆连接有气缸组件。所述密封组件Ⅰ和密封组件Ⅱ均为圆柱形。所述密封组件Ⅰ和密封组件Ⅱ的中部分别设有通路Ⅰ和通路Ⅱ。所述密封组件Ⅰ和密封组件Ⅱ均设有两个,两个密封组件Ⅰ之间通过阀芯隔断,两个密封组件Ⅱ之间通过通路Ⅱ连通。本发明通过密封组件中的通路,把超高压流体通入密封圈,利用超高压流体的压力把密封圈压向结合面,可以使截止阀在腔内压力高时不易泄压、密封性良好。本发明用于高压环境下液体的截止密封。(The invention belongs to the technical field of stop valves, and particularly relates to an ultrahigh pressure stop valve which comprises a valve body, wherein a high-pressure pipeline is arranged in the middle of the valve body, a valve core is arranged in the valve body, a sealing assembly is embedded in the valve core, the sealing assembly comprises a sealing assembly I and a sealing assembly II, and the valve core is connected with a cylinder assembly through a valve rod. And the sealing component I and the sealing component II are both cylindrical. And the middle parts of the sealing component I and the sealing component II are respectively provided with a passage I and a passage II. Seal assembly I and seal assembly II all are equipped with two, cut off through the case between two seal assembly I, communicate through II passageways between two seal assembly II. According to the invention, the ultrahigh pressure fluid is introduced into the sealing ring through the passage in the sealing assembly, and the sealing ring is pressed to the joint surface by using the pressure of the ultrahigh pressure fluid, so that the pressure of the stop valve in the cavity is high, the pressure is not easy to release, and the sealing property is good. The invention is used for stopping and sealing liquid in a high-pressure environment.)

1. An ultrahigh pressure stop valve which is characterized in that: the valve comprises a valve body (1), wherein a high-pressure pipeline (2) is arranged in the middle of the valve body (1), a valve core (3) is arranged inside the valve body (1), a sealing assembly is embedded in the valve core (3), the sealing assembly comprises a sealing assembly I (3-1) and a sealing assembly II (3-2), and the valve core (3) is connected with a cylinder assembly (5) through a valve rod (4).

2. The ultrahigh pressure shutoff valve according to claim 1, wherein: the sealing component I (3-1) and the sealing component II (3-2) are both cylindrical.

3. The ultrahigh pressure shutoff valve according to claim 1, wherein: and the sealing assembly I (3-1) and the sealing assembly II (3-2) are respectively provided with a passage I (3-1-3) and a passage II (3-2-1).

4. An extra-high pressure shut-off valve according to claim 3, characterized in that: the two sealing assemblies I (3-1) and the two sealing assemblies II (3-2) are respectively provided, the two sealing assemblies I (3-1) are separated through the valve core (3), and the two sealing assemblies II (3-2) are communicated through the passage II (3-2-1).

5. The ultrahigh pressure shutoff valve according to claim 4, wherein: the diameter of the passage II (3-2-1) is the same as that of the high-pressure pipeline (2).

6. The ultrahigh pressure shutoff valve according to claim 3 or 4, characterized in that: the passage I (3-1-3) of the sealing component I (3-1) is respectively communicated with the sealing ring I (3-1-1) and the sealing ring II (3-1-2), and the passage II (3-2-1) of the sealing component II (3-2) is respectively communicated with the sealing ring I (3-1-1) and the sealing ring II (3-1-2) through the small channel (3-2-2).

7. The ultrahigh pressure shutoff valve according to claim 6, wherein: the sealing ring I (3-1-1) is arranged at a joint surface of the sealing assembly and the valve body (1), and the sealing ring II (3-1-2) is arranged at a joint surface of the sealing assembly and the valve core (3).

Technical Field

the invention belongs to the technical field of stop valves, and particularly relates to an ultrahigh pressure stop valve.

Background

To the sealing of superhigh pressure stop valve, in prior art, adopt various sealing washer and sealed pad to seal mostly, when intracavity pressure is very high, sealed effect is not good, takes place the pressure release very easily, takes place the accident easily, consequently, it is necessary to design a superhigh pressure stop valve structure, can adapt to the sealed requirement under various pressure.

Disclosure of Invention

aiming at the technical problem, the ultrahigh pressure stop valve is good in sealing and not easy to release pressure.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides an ultrahigh pressure stop valve, includes the valve body, the middle part of valve body is equipped with high-pressure line, the inside of valve body is equipped with the case, the case is embedded to have seal assembly, seal assembly includes seal assembly I and seal assembly II, the case is connected with the cylinder subassembly through the valve rod.

and the sealing component I and the sealing component II are both cylindrical.

and the middle parts of the sealing component I and the sealing component II are respectively provided with a passage I and a passage II.

Seal assembly I and seal assembly II all are equipped with two, cut off through the case between two seal assembly I, communicate through II passageways between two seal assembly II.

And the diameter of the passage II is the same as that of the high-pressure pipeline.

a passage I of the sealing assembly I is communicated with a sealing ring I and a sealing ring II respectively, and a passage II of the sealing assembly II is communicated with the sealing ring I and the sealing ring II respectively through small channels.

The sealing ring I is arranged on a joint surface of the sealing assembly and the valve body, and the sealing ring II is arranged on a joint surface of the sealing assembly and the valve core.

Compared with the prior art, the invention has the following beneficial effects:

According to the invention, the ultrahigh pressure fluid is introduced into the sealing ring through the passage in the sealing assembly, and the sealing ring is pressed to the joint surface by using the pressure of the ultrahigh pressure fluid, so that the pressure of the stop valve in the cavity is high, the pressure is not easy to release, and the sealing property is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the valve cartridge of the present invention;

FIG. 3 is a three-dimensional schematic of the valve cartridge of the present invention;

FIG. 4 is a schematic view of the construction of a seal assembly I of the present invention;

FIG. 5 is a schematic structural view of a seal assembly II of the present invention;

FIG. 6 is a three-dimensional schematic view of a seal ring I of the present invention;

FIG. 7 is a schematic three-dimensional view of seal ring II of the present invention;

FIG. 8 is a three-dimensional schematic view of a seal assembly I of the present invention;

FIG. 9 is a three-dimensional schematic view of the seal assembly II of the present invention;

Wherein: the valve body 1 is a valve body, the high-pressure pipeline 2 is a valve core 3, the connecting rod 4 is a connecting rod 5 is a cylinder assembly 3-1 is a sealing assembly I, the sealing assembly II is 3-2, the sealing ring I is 3-1-1, the sealing ring II is 3-1-2, the passage I is 3-1-3, the passage II is 3-2-1, and the small passage 3-2-2 is a small passage.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

the utility model provides an ultrahigh pressure stop valve, as shown in figure 1, includes valve body 1, and the middle part of valve body 1 is equipped with high-pressure line 2, lets in the ultrahigh pressure fluid in the high-pressure line 2, and the inside of valve body 1 is equipped with case 3, and case 3 is embedded to have a seal assembly, and seal assembly includes seal assembly I3-1 and seal assembly II 3-2, and case 3 is connected with cylinder assembly 5 through valve rod 4. When the stop valve needs to be stopped, the air cylinder assembly 5 drives the valve core 3 to move upwards through the valve rod 4, so that the sealing assembly I3-1 moves to the position of the high-pressure pipeline 2, and the stop of the stop valve is completed. When the stop valve needs to be opened, the air cylinder assembly 5 drives the valve core 3 to move downwards through the valve rod 4, so that the sealing assembly II 3-2 moves to the position of the high-pressure pipeline 2, and the stop valve is opened.

Further, preferably, the sealing component I3-1 and the sealing component II 3-2 are both cylindrical, so that the stress is more uniform during sealing.

Further, the sealing component I3-1 and the sealing component II 3-2 are respectively provided with a passage I3-1-3 and a passage II 3-2-1 in the middle.

further, preferably, two sealing assemblies I3-1 and two sealing assemblies II 3-2 are arranged, the two-way ultrahigh-pressure fluid can be sealed, the two sealing assemblies I3-1 are separated by a valve core 3, when the stop valve is closed, the ultrahigh-pressure fluid is separated by the valve core 3 between the two sealing assemblies I3-1, the two sealing assemblies II 3-2 are communicated by a passage II 3-2-1, and when the stop valve is opened, the ultrahigh-pressure fluid flows through the passage II 3-2-1 between the two sealing assemblies II 3-2.

Further, preferably, the passage ii 3-2-1 has the same diameter as the high-pressure line 2, so that the resistance to the flow of the ultrahigh-pressure fluid when the shutoff valve is opened can be reduced.

Furthermore, a passage I3-1-3 of the sealing assembly I3-1 is respectively communicated with a sealing ring I3-1-1 and a sealing ring II 3-1-2, when the stop valve is stopped, the high-pressure pipeline 2 is communicated with the passage I3-1-3 on the sealing assembly I3-1, when ultrahigh-pressure fluid exists in the high-pressure cavity, the ultrahigh-pressure fluid is introduced into the sealing ring I3-1-1 and the sealing ring II 3-1-2 through the passage I3-1-3 and presses the sealing ring to a joint surface, and the sealing effect is improved. The passage II 3-2-1 of the sealing component II 3-2 is respectively communicated with the sealing ring I3-1-1 and the sealing ring II 3-1-2 through the small channel 3-2-2, when the stop valve is opened, the high-pressure pipeline 2 is communicated with the passage II 3-2-1 on the sealing component II 3-2, when ultrahigh-pressure fluid is introduced into the passage II 3-2-1, the ultrahigh-pressure fluid is introduced into the sealing ring I3-1-1 and the sealing ring II 3-1-2 through the small channel 3-2-2, the sealing ring is pressed to a joint surface, and the sealing effect is improved.

Further, preferably, the sealing ring I3-1-1 is arranged at the joint surface of the sealing assembly and the valve body 1, and the sealing ring II 3-1-2 is arranged at the joint surface of the sealing assembly and the valve core 3.

The working process of the invention is as follows: when the stop valve need end, the cylinder subassembly passes through the valve rod and drives 3 rebound of case for seal assembly I removes high-pressure line's position, and ultrahigh pressure fluid is cut off by the case between two seal assembly I, and high-pressure line communicates with the I intercommunication of passageway on the seal assembly I, and ultrahigh pressure fluid lets in sealing washer I and sealing washer II to ultrahigh pressure fluid through passageway I, presses the sealing washer to the faying face, thereby accomplishes ending of stop valve. When the stop valve need be opened, the cylinder subassembly passes through the valve rod and drives case downstream for sealing assembly II removes high-pressure line's position, and the superhigh pressure fluid circulates through II of the passageway between two sealing assembly II, and II intercommunications of passageway on high-pressure line and the sealing assembly II, superhigh pressure fluid pass through the microchannel and let in sealing washer I and sealing washer II to high-pressure fluid, press the sealing washer to the faying face, thereby accomplish opening of stop valve.

Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.