CN216715336U - Multi-spring pre-opening type valve core structure - Google Patents
Multi-spring pre-opening type valve core structure Download PDFInfo
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- CN216715336U CN216715336U CN202220146793.8U CN202220146793U CN216715336U CN 216715336 U CN216715336 U CN 216715336U CN 202220146793 U CN202220146793 U CN 202220146793U CN 216715336 U CN216715336 U CN 216715336U
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Abstract
The utility model discloses a multi-spring pre-starting type valve core structure which is characterized by comprising a pre-starting type valve core connected with a valve rod and a large valve core connected with the pre-starting type valve core; a plurality of springs are arranged between the pre-starting valve core and the large valve core; and the pre-starting valve core and the large valve core are respectively provided with a plurality of flow guide holes and a guide assembly for improving the motion stability of the pre-starting valve core. According to the utility model, through the arrangement of the pre-starting valve core, the pre-starting valve core is used for pre-starting, so that the pressure difference between the upper cavity and the lower cavity of the pre-starting valve core is reduced, the unbalanced force borne by the pre-starting valve core is reduced, and the opening of a large valve core is facilitated; through the arrangement of the guiding assembly, the movement of the pre-starting valve core is guided by the guiding assembly, so that the movement stability of the pre-starting valve core is improved; through the arrangement of the diversion holes, the diversion holes are utilized to circulate the pressure in front of the pre-opening type valve core, the lower cavity of the large valve core and the valve, so that the large valve core and the pre-opening type valve core can be opened and closed conveniently.
Description
Technical Field
The utility model relates to the technical field of valve core structures, in particular to a multi-spring pre-opening type valve core structure.
Background
The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters of a conveying medium, and is widely used in various fields, the valve controls the opening and closing of the valve by driving a valve core to move by an actuator, but in the prior art, high-temperature and high-pressure steam is output from a main steam pipeline of a nuclear power station, and the requirement for internal leakage is high due to the large caliber of the pipeline, so that the valve with a common structure is very easy to open and close, and the sealing performance and the normal use of the valve are influenced. To this end, a multiple spring pre-actuated valve cartridge configuration is proposed.
Disclosure of Invention
The utility model aims to solve the problems and provides a pre-starting valve core structure in a multi-spring mode.
In order to achieve the purpose, the utility model provides the following technical scheme: a multi-spring pre-starting valve core structure is characterized by comprising a pre-starting valve core connected with a valve rod and a large valve core connected with the pre-starting valve core; a plurality of springs are arranged between the pre-starting valve core and the large valve core; and the pre-opening valve core and the big valve core are respectively provided with a plurality of flow guide holes and a guide assembly for improving the motion stability of the pre-opening valve core.
Preferably, the pre-starting valve core is sleeved with a baffle and a limiting nut for limiting the baffle; the big valve core is also provided with a plurality of sealing rings; the pre-starting valve core moves along the guide assembly.
Preferably, the guide assembly comprises a guide movable hole which is arranged on the big valve core and matched with the pre-starting valve core, and a guide shaft which is arranged on the pre-starting valve core and matched with the big valve core.
The utility model has the beneficial effects that: through the arrangement of the pre-starting valve core, the pre-starting valve core is used for pre-starting, so that the pressure difference between an upper cavity and a lower cavity of the pre-starting valve core is reduced, the unbalanced force born by the pre-starting valve core is reduced, and the opening of a large valve core is facilitated;
through the arrangement of the guiding assembly, the movement of the pre-starting valve core is guided by the guiding assembly, so that the movement stability of the pre-starting valve core is improved;
through the arrangement of the diversion holes, the diversion holes are utilized to circulate the pressure in front of the pre-opening type valve core, the lower cavity of the large valve core and the valve, so that the large valve core and the pre-opening type valve core can be conveniently opened and closed, and the leakage of the valve is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The figure illustrates that 1 is a pre-starting valve core; 101 a guide shaft; 2, a big valve core; 201 a sealing ring; 202 guiding the movable hole; 3, a spring; 4, flow guide holes; 5, a baffle plate; 6, limiting the nut.
Detailed Description
The structure of a multiple spring pre-actuated valve core according to the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the multiple-spring pre-starting type valve core structure in the present embodiment includes a pre-starting type valve core 1 connected to a valve rod and a large valve core 2 connected to the pre-starting type valve core 1; a plurality of springs 3 are arranged between the pre-starting valve core 1 and the large valve core 2; the pre-starting valve core 1 and the big valve core 2 are both provided with a plurality of flow guide holes 4 and a guide assembly for improving the motion stability of the pre-starting valve core 1; through the arrangement of the pre-starting valve core 1, the pre-starting valve core 1 is used for pre-starting, so that the pressure difference between an upper cavity and a lower cavity of the pre-starting valve core 1 is reduced, the unbalanced force borne by the pre-starting valve core 1 is reduced, and the large valve core 2 and the pre-starting valve core 1 can be conveniently opened; through the arrangement of the guiding assembly, the movement of the pre-starting valve core 1 is guided by the guiding assembly, so that the movement stability of the pre-starting valve core 1 is improved; through the setting of water conservancy diversion hole 4, utilize water conservancy diversion hole 4 to carry out circulation concora crush to the pressure in front of the lower chamber of pre-opened case 1, big case 1 to be convenient for big case 2 and pre-opened case 1 open and close, reduce revealing of valve.
Referring to fig. 1, a baffle 5 and a limit nut 6 for limiting the baffle 5 are sleeved on the pre-opening valve core 1; the big valve core 2 is also provided with a plurality of sealing rings 201; the pre-starting valve core 1 moves along the guide assembly; the guide assembly comprises a guide movable hole 202 which is arranged on the big valve core 2 and is matched with the pre-starting valve core 1 and a guide shaft 101 which is arranged on the pre-starting valve core 1 and is matched with the big valve core 2; by the arrangement of the sealing ring 201, the sealing ring 201 is used for sealing the position of the big valve core 2, so that the medium is prevented from leaking; the baffle 5 and the large valve core 1 are sleeved on the pre-starting valve core 1, and the limiting nut 6 is used for limiting, so that the large valve core 2 is connected with the pre-starting valve core 1; the movement of the pre-starting valve core 1 is guided by the guide movable hole 202 on the big valve core 2 and the guide shaft 101 on the pre-starting valve core 1, so that the movement stability of the pre-starting valve core 1 is improved.
In the working process of the utility model, when the valve is opened, the actuator drives the valve rod to move, the valve rod drives the pre-opened valve core 1 to move upwards along the guide movable hole 202, simultaneously, the pre-opened valve core 1 is quickly separated from the large valve core 2 through the elasticity of the spring 3, the baffle 5 is contacted with the large valve core 2 to limit the pre-opened valve core 1, the pressure of the upper cavity of the pre-opened valve core 1 enters between the pre-opened valve core 1 and the large valve core 2 through the flow guide hole 4 on the pre-opened valve core 1 and then enters into the lower cavity of the large valve core 2 through the flow guide hole 4 on the large valve core 2 to increase the pressure of the lower cavity and reduce the pressure difference between the upper cavity and the lower cavity, then the pre-opened valve core 1 continues to move upwards and drives the large valve core 2 to completely open the valve to communicate with the front part of the valve and the rear part of the valve, when the valve is closed, the actuator drives the valve rod to move, the valve rod drives the pre-opened valve core 1 to move downwards along the guide movable hole 202 and pushes the large valve core 2 to disconnect with the front part of the rear part of the valve, because the medium in front of the valve can not flow to the back of the valve, the pressure in front of the valve is increased, the pressure in back of the valve is reduced, the pressure in front of the valve enters the upper cavity of the pre-opening valve core 1 through the diversion hole 4 on the big valve core 2, the pressure in the upper cavity is equal to the pressure in front of the valve, and meanwhile the pressure in the upper cavity exerts a pressing force on the pre-opening valve core 1 and the big valve core 2, so that the leakage of the medium is prevented.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (3)
1. A multi-spring pre-starting type valve core structure is characterized by comprising a pre-starting type valve core (1) connected with a valve rod and a large valve core (2) connected with the pre-starting type valve core (1); a plurality of springs (3) are arranged between the pre-starting valve core (1) and the large valve core (2); the pre-opening valve core (1) and the big valve core (2) are both provided with a plurality of diversion holes (4) and a guide assembly for improving the motion stability of the pre-opening valve core (1).
2. A multiple spring version of a pre-start valve cartridge structure as defined in claim 1 wherein: the pre-opening valve core (1) is sleeved with a baffle (5) and a limiting nut (6) for limiting the baffle (5); the big valve core (2) is also provided with a plurality of sealing rings (201); the pre-starting valve core (1) moves along the guide assembly.
3. A multiple spring version of the pre-start valve cartridge structure of claim 2, wherein: the guide assembly comprises a guide movable hole (202) which is arranged on the big valve core (2) and matched with the pre-starting valve core (1) and a guide shaft (101) which is arranged on the pre-starting valve core (1) and matched with the big valve core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220146793.8U CN216715336U (en) | 2022-01-20 | 2022-01-20 | Multi-spring pre-opening type valve core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220146793.8U CN216715336U (en) | 2022-01-20 | 2022-01-20 | Multi-spring pre-opening type valve core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715336U true CN216715336U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220146793.8U Active CN216715336U (en) | 2022-01-20 | 2022-01-20 | Multi-spring pre-opening type valve core structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715336U (en) |
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2022
- 2022-01-20 CN CN202220146793.8U patent/CN216715336U/en active Active
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