CN212226116U - Multifunctional instrument valve - Google Patents

Abstract

The present disclosure relates to a multifunctional instrument valve, comprising: the valve comprises a valve body (1), a valve body and a valve body, wherein the valve body is provided with an upper valve cavity (11) and a lower valve cavity (12) which are communicated, an inlet (13) communicated with the lower valve cavity and an outlet (14) communicated with the upper valve cavity, and a sealing opening (10) is formed at the joint of the upper valve cavity and the lower valve cavity; the first valve clack (2) is arranged in the upper valve cavity in a vertically movable mode so as to selectively conduct or cut off the sealing port; and a second valve flap (3) disposed in the lower valve chamber, the multifunction instrument valve having: a first operation in which the second valve flap is moved upward to close the sealing port by a pressure difference between the inlet and the outlet when the outlet pressure is suddenly reduced; and in the second working process, the first valve clack moves downwards and drives the second valve clack to move downwards so as to conduct the sealing port. When the instrument and the valve outlet pipeline burst or leak, the multifunctional instrument valve can quickly and automatically prevent the medium from leaking outside, ensure the safety of people and equipment and avoid environmental pollution.

Description

Multifunctional instrument valve

Technical Field

The disclosure relates to the field of pipeline accessories, in particular to a multifunctional instrument valve.

Background

And the instrument valve is used for changing the passage section and the medium flow direction. In the related technology, the instrument valve is arranged at the upstream of the instrument and meter and is in an open state for a long time, once the instrument and meter explodes, the medium leakage is uncontrollable, a large amount of inflammable/explosive/harmful/radioactive media can quickly enter the environment, and once the radioactive media leak, the threat to people and equipment is great. Therefore, the design of the multifunctional instrument valve capable of being quickly and automatically cut off is of great significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multi-functional instrument valve, this multi-functional instrument valve can prevent medium leakage fast automatically, when instrument bursts or the emergence of revealing the incident, guarantees people and equipment's safety.

In order to achieve the above object, the present disclosure provides a multifunctional meter valve including:

the valve body is provided with an upper valve cavity, a lower valve cavity, an inlet and an outlet, wherein the upper valve cavity and the lower valve cavity are communicated with each other;

the first valve clack can be arranged in the upper valve cavity in an up-and-down motion mode so as to selectively conduct or stop the sealing port; and

a second valve flap disposed within the lower valve chamber, the multifunction instrument valve having:

a first working process, when the pressure of the outlet is suddenly reduced, the second valve clack moves upwards under the action of the pressure difference between the inlet and the outlet so as to cut off the sealing port; and

and in the second working process, the first valve clack moves downwards and drives the second valve clack to move downwards so as to conduct the sealing port.

Optionally, the second valve flap comprises a sealing element for closing the sealing port, a connecting column connected with the sealing element, and an elastic element connected between the sealing element and the bottom wall of the lower valve chamber,

the multifunctional instrument valve is structured as follows:

in the first working process, the elastic force of the elastic piece drives the sealing piece and the connecting column to move upwards, the connecting column penetrates through the sealing opening, and the sealing piece stops the sealing opening;

in the second working process, the first valve clack moves downwards to be abutted against the connecting column, and the sealing element is pushed to move downwards by overcoming the elastic force of the elastic element so as to conduct the sealing port.

Optionally, a valve seat passage is formed at the joint of the upper valve chamber and the lower valve chamber, the sealing ports include a first sealing port formed at one end of the valve seat passage close to the upper valve chamber, and a second sealing port formed at one end of the valve seat passage close to the lower valve chamber, the first valve flap moves up and down to conduct or cut off the first sealing port, and the second valve flap moves up and down to cut off or conduct the second sealing port.

Optionally, the first valve flap is configured in a reverse taper shape, and a diameter of a lowermost end surface of the reverse taper shape is smaller than an inner diameter of the valve seat passage.

Optionally, one end of the sealing element close to the second sealing opening is formed into a conical surface, and the shaft diameter of the end surface connected with the connecting column is smaller than the inner diameter of the second sealing opening.

Optionally, a guide post is fixed on the bottom wall of the lower valve cavity, a fixed cavity is formed at the bottom of the sealing element in a concave manner, and the elastic element is a spring arranged in the fixed cavity and sleeved on the guide post.

Optionally, the inlet and the outlet are located at the same height, the inlet is communicated with the lower valve chamber through a first flow passage, and the outlet is communicated with the upper valve chamber through a second flow passage.

Optionally, the multifunctional instrument valve further comprises a valve cover for closing the upper valve cavity, a valve rod penetrating through the valve cover and connected with the first valve clack, and a handle connected to the top end of the valve rod.

Optionally, the valve stem and the first valve flap are connected by a pin passing through both, and a threaded connection section is provided between the valve stem and the inner wall of the upper valve chamber.

Optionally, a seal is disposed between the valve cover and the upper valve chamber.

Through the technical scheme, the multifunctional instrument valve provided by the disclosure not only has the function of a stop valve, but also has an explosion-proof function, namely, the connection or the disconnection of a sealing port can be realized by controlling the first valve clack to move up and down; the second valve clack normally works at the full-open position, and once the instrument or the outlet pipeline bursts and leaks, the second valve clack can automatically stop the sealing port, so that the medium is prevented from leaking outwards, the integrity of a pressure boundary is ensured, the phenomenon of leakage and leakage of the medium is prevented, and the safety index is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a front view of a multi-function meter valve provided by an exemplary embodiment of the present disclosure;

FIG. 2 is a side view of a multifunction instrument valve provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a multifunction instrument valve provided in an exemplary embodiment of the present disclosure;

FIG. 4 is a partial enlarged view of the internal structure of a multifunction instrument valve in a normal operating state provided by an exemplary embodiment of the present disclosure;

fig. 5 is a partially enlarged view of the internal structure of a multifunctional instrument valve outlet line or an instrument in a ruptured state according to an exemplary embodiment of the present disclosure.

Description of the reference numerals

1 valve body 10 seal

11 upper valve cavity 12 lower valve cavity

13 inlet and 14 outlet

15 seat channel 101 first seal

102 second seal port 121 guide post

131 first flow path 141 second flow path

2 first valve flap 3 second valve flap

31 sealing element 32 connecting column

33 elastic piece 4 valve cover

5 valve rod 6 handle

7 pin 8 sealing gasket

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional words such as "upper and lower" generally means that they are defined under normal operation of the multifunction instrument valve provided in the present disclosure, and particularly with reference to the drawing plane directions of the drawings, "inner and outer" means inner and outer of the outline of the corresponding component. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

It should be noted that, for convenience of description, the embodiment of the present disclosure is described by taking the direction of the attached drawings as an example, that is, components such as the valve rod, the first valve flap, the second valve flap, and the like all move up and down, and in actual use, the movement may be oriented in any direction depending on the placement position of the instrument valve.

Referring to fig. 1 to 5, the present embodiment provides a multifunctional meter valve, including: the valve comprises a valve body 1, a first valve clack 2 and a second valve clack 3, wherein the valve body 1 is provided with an upper valve cavity 11 and a lower valve cavity 12 which are communicated, an inlet 13 communicated with the lower valve cavity 12 and an outlet 14 communicated with the upper valve cavity 11. The connection part of the upper valve cavity 11 and the lower valve cavity 12 is formed into a sealing port 10, the first valve clack 2 can be arranged in the upper valve cavity 11 in a vertically movable mode so as to selectively conduct or stop the sealing port 10, and the second valve clack 3 is arranged in the lower valve cavity 12.

The multifunctional instrument valve has a first working process, when an instrument or a valve outlet pipeline is broken or leaked, the pressure of an outlet 14 is suddenly reduced, the second valve clack 3 moves upwards to stop the sealing port 10 under the action of the pressure difference between an inlet 13 and the outlet 14, so that the medium is prevented from leaking outwards, the integrity of a pressure boundary is ensured, the phenomenon that the medium is dripped, leaked and emitted is prevented, and when the outlet pipeline or the instrument is broken and leaked, the second valve clack 3 can automatically stop the sealing port 10 to prevent the medium from flowing, so that potential safety hazards are eliminated; in the second working process, after the broken pipeline or instrument is replaced, the first valve clack 2 is driven to move downwards and the second valve clack 3 is driven to move downwards so as to lead the sealing port 10 to be communicated, the medium is guided to return, the pressure of the inlet 13 and the pressure of the outlet 14 are balanced, and the first valve clack 2 can be driven to move upwards at the moment, so that the flow at the position of the sealing port 10 cannot be influenced.

The multifunctional instrument valve provided by the disclosure utilizes the principle of the stop valve and the check valve, not only has the function of the stop valve, but also has the function of explosion prevention, namely, the first valve clack 2 is controlled to move up and down, so that the connection or the disconnection of the sealing port 10 can be realized; the second valve clack 3 normally works and is in full open position, in case instrument or outlet pipeline take place to burst and reveal, second valve clack 3 can be automatic by sealing port 10, avoids the medium to leak outward, guarantees pressure boundary integrality, prevents that the medium from leaking the phenomenon and taking place of running, has improved the safety index.

The second valve flap 3 may be of any suitable construction. Specifically, in the embodiment of the present disclosure, as shown in fig. 4, the second valve flap 3 includes a sealing member 31 for closing the sealing port 10, a connecting column 32 connected to the sealing member 31, and an elastic member 33 connected between the sealing member 31 and the bottom wall of the lower valve chamber 12, an axial diameter of the connecting column 32 is smaller than an inner diameter of the sealing port 10, during a first operation, a pressure of the outlet 14 is suddenly reduced, and under the action of a pressure difference, an elastic force of the elastic member 33 is released to drive the sealing member 31 and the connecting column 32 to move upwards, at this time, the connecting column 32 passes through the sealing port 10, the sealing member 31 closes the sealing port 10, and when a burst leakage occurs in the outlet line or the meter, automatic sealing and explosion prevention are achieved; in the second working process, after the burst pipeline or instrument is replaced, the first valve clack 2 is driven to move downwards to abut against the connecting column 32, the sealing element 31 is pushed to move downwards by overcoming the elastic force of the elastic element 33, the sealing port 10 is conducted, meanwhile, the medium is guided to flow into the instrument again, at the moment, the pressure of the inlet 13 and the pressure of the outlet 14 are balanced, and the elastic element restores elastic deformation to restore the sealing element 31 to the initial position.

As an exemplary embodiment of the present disclosure, as shown in fig. 3, a joint of the upper valve chamber 11 and the lower valve chamber 12 has a valve seat passage 15, and an inner diameter of the valve seat passage 15 is smaller than inner diameters of the upper valve chamber 11 and the lower valve chamber 12, wherein the seal port 10 includes a first seal port 101 formed at one end of the valve seat passage 15 close to the upper valve chamber 11 and a second seal port 102 formed at one end of the valve seat passage 15 close to the lower valve chamber 12, that is, the first seal port 101 is formed at a step of the upper valve chamber 11 and the valve seat passage 15, and the second seal port 102 is formed at a step of the lower valve chamber 12 and the valve seat passage 15. The first valve clack 2 is in a reverse taper shape, and the diameter of the lowest end face of the reverse taper shape is smaller than the inner diameter of the valve seat channel 15 and close to the shaft diameter of the connecting column 32, that is, the diameter of the lowest end face of the first valve clack 2 can be equal to the shaft diameter of the connecting column 32, or slightly larger or smaller than the shaft diameter of the connecting column 32, and moves upwards or downwards on the first valve clack 2 to conduct or stop the first sealing port 101.

In order to ensure the sealing action of the sealing member 31 on the second sealing port 102 to prevent the medium from flowing through the second sealing port 102, the end of the sealing member 31 close to the second sealing port 102 may be formed as a tapered surface, i.e., a tapered valve structure. In other embodiments, the sealing member 31 may be formed as a plane or a spherical surface, and the sealing member may be configured to seal the second sealing port 102, where the shaft diameter of the end surface of the sealing member 31 to which the connection post 32 is connected is smaller than the inner diameter of the second sealing port 102, and the sealing member 31 moves up and down to open or close the second sealing port 102.

Further, in this embodiment, as shown in fig. 4 and 5, a guide post 121 is fixed on the bottom wall of the lower valve cavity 12, a fixed cavity is formed at the bottom of the sealing member 31 by recessing, the elastic member 33 may be an extension spring sleeved on the guide post 121, one end of the extension spring abuts against the end surface of the sealing member 31, and the other end of the extension spring abuts against the bottom wall of the fixed cavity of the sealing member 31, when the pressure of the outlet 14 becomes smaller, the extension spring releases the elastic force to be extended, and the second sealing port 102 is in the stop state; the first valve flap 2 is driven to move downward to push the sealing member 31 to move downward against the elastic force of the extension spring, and the second sealing port 102 is in a conducting state.

In addition, in the present embodiment, in order to facilitate the arrangement of the pipeline, the inlet 13 and the outlet 14 are located at the same height, and the present embodiment further includes a first flow passage 131 and a second flow passage 141, the inlet 13 is communicated with the lower valve chamber 12 through the first flow passage 131, and the outlet 14 is communicated with the upper valve chamber 11 through the second flow passage 141, which can ensure that the inlet 13 and the outlet 14 are located at the same height.

There are various ways to drive the first valve flap 2 up and down in the upper valve chamber 11. As shown in fig. 3, the multifunctional instrument valve provided by the present disclosure further includes a valve cover 4 for closing the upper valve cavity 11, a valve rod 5 connected with the first valve flap 2 through the valve cover 4, and a handle 6 connected to the top end of the valve rod 5, wherein the valve rod 5 is driven by the handle to move up and down to drive the first valve flap 2 to move up and down along the vertical direction, so as to control the opening and closing of the first sealing port 101, or to drive the second valve flap 3 to move down during the second working process.

Specifically, as shown in fig. 4 and 5, the first valve clack 2 includes a reverse tapered valve clack body and a column connected to the valve clack body, the valve rod 5 and the column are connected by a pin 7 passing through the two, a threaded connection section is provided between the valve rod 5 and the inner wall of the upper valve chamber 11, the valve rod 5 is driven to move up and down by rotating the handle 6 clockwise or counterclockwise, and the valve clack body is driven to move up and down.

A sealing gasket 8 is arranged between the valve cover 4 and the upper valve cavity 11 to play a role in sealing, and the material of the sealing gasket can be rubber, metal or asbestos and the like, so that the overall sealing performance of the multifunctional instrument valve is ensured.

So set up, multi-functional instrument valve normal work is in full open position, and in case the instrument takes place to burst to reveal behind the multi-functional instrument valve, second valve lamella 3 can self-closing sealing port 10, avoids the medium to leak outward, guarantees pressure boundary integrality, prevents that the medium water clock from running the phenomenon and emerging and taking place, has improved the safety index.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A multifunction instrument valve, comprising:

the valve body (1) is provided with an upper valve cavity (11) and a lower valve cavity (12) which are communicated, an inlet (13) communicated with the lower valve cavity (12) and an outlet (14) communicated with the upper valve cavity (11), and a sealing opening (10) is formed at the joint of the upper valve cavity (11) and the lower valve cavity (12);

the first valve clack (2) is arranged in the upper valve cavity (11) in a vertically movable mode so as to selectively conduct or cut off the sealing port (10); and

a second valve flap (3) arranged in the lower valve chamber (12),

the multifunctional meter valve has:

a first working process, when the pressure of the outlet (14) is suddenly reduced, the second valve flap (3) moves upwards under the action of the pressure difference of the inlet (13) and the outlet (14) to cut off the sealing port (10); and

and in the second working process, the first valve clack (2) moves downwards and drives the second valve clack (3) to move downwards so as to conduct the sealing port (10).

2. Multifunction instrument valve according to claim 1, characterized in that the second flap (3) comprises a seal (31) for closing the sealing opening (10), a connecting post (32) connected with the seal (31), and an elastic member (33) connected between the seal (31) and the bottom wall of the lower valve chamber (12),

the multifunctional instrument valve is structured as follows:

in the first working process, the elastic force of the elastic piece (33) drives the sealing piece (31) and the connecting column (32) to move upwards, the connecting column (32) penetrates through the sealing opening (10), and the sealing piece (31) stops the sealing opening (10);

in the second working process, the first valve clack (2) moves downwards to abut against the connecting column (32), and the sealing element (31) is pushed to move downwards to conduct the sealing port (10) against the elastic force of the elastic element (33).

3. The multifunctional meter valve according to claim 2, wherein the junction of the upper valve chamber (11) and the lower valve chamber (12) has a valve seat passage (15), the sealing port (10) comprises a first sealing port (101) formed at an end of the valve seat passage (15) close to the upper valve chamber (11), and a second sealing port (102) formed at an end of the valve seat passage (15) close to the lower valve chamber (12), the first valve flap (2) moves up and down to open or close the first sealing port (101), and the second valve flap (3) moves up and down to close or open the second sealing port (102).

4. Multifunction instrument valve according to claim 3, characterized in that the first flap (2) is constructed as an inverted cone, and that the diameter of the lowermost end face of the inverted cone is smaller than the inner diameter of the seat channel (15).

5. The multifunction meter valve according to claim 3, characterized in that an end of the seal member (31) close to the second seal port (102) is formed as a tapered surface, and an axial diameter of an end surface to which the connection post (32) is connected is smaller than an inner diameter of the second seal port (102).

6. The multifunctional instrument valve of claim 2, characterized in that a guide post (121) is fixed on the bottom wall of the lower valve cavity (12), a fixed cavity is formed at the bottom of the sealing member (31) in a concave manner, and the elastic member (33) is a spring arranged in the fixed cavity and sleeved on the guide post (121).

7. The multifunction meter valve according to claim 1, characterized in that the inlet (13) and the outlet (14) are located at the same height, the inlet (13) communicating with the lower valve chamber (12) through a first flow passage (131), the outlet (14) communicating with the upper valve chamber (11) through a second flow passage (141).

8. Multifunction instrument valve according to any of claims 1-7, characterized in that it further comprises a valve cover (4) for closing the upper valve cavity (11), a valve stem (5) connected with the first valve flap (2) through the valve cover (4), and a handle (6) connected at the top end of the valve stem (5).

9. Multifunctional instrument valve according to claim 8, characterized in that the valve stem (5) and the first flap (2) are connected by a pin (7) passing through both, with a threaded connection between the valve stem (5) and the inner wall of the upper valve chamber (11).

10. Multifunctional instrument valve according to claim 8, characterized in that a sealing gasket (8) is arranged between the valve cover (4) and the upper valve cavity (11).

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