CN215950538U

CN215950538U - Valve opening and closing tool and check valve matching mechanism

Info

Publication number: CN215950538U
Application number: CN202122354063.5U
Authority: CN
Inventors: 喻栋清; 丁城; 陈远
Original assignee: Neway Valve Suzhou Co Ltd
Current assignee: Neway Valve Suzhou Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-04
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to the technical field of valves, and particularly discloses a valve opening and closing tool and a check valve matching mechanism, wherein the tool comprises an opening and closing piece, the opening and closing piece comprises an extending part and a fixing part, the fixing part is detachably connected with a valve body, one end of the extending part is connected with a power output end of the opening and closing piece, the other end of the extending part extends into a medium channel of the valve body, the conveying direction of the extending part is parallel to the flow direction of a medium and is driven by a driving force, and the extending part is close to and abutted against a valve clack to drive the valve clack to be close to or far away from a first position of the valve clack relative to the valve body. When the valve is required to be subjected to complete machine fatigue test for two thousand times, the fixing part is only required to be installed on the valve body, then the extending part is utilized to drive the valve clack to be close to and far away from the first position, the opening and closing effect of the valve is realized, the fatigue test of opening and closing the valve clack for 2000 times is completed repeatedly, the fatigue test can be completed without operating personnel to operate the opening and closing of the valve clack, and the valve is suitable for being in an ultra-low temperature environment.

Description

Valve opening and closing tool and check valve matching mechanism

Technical Field

The utility model relates to the technical field of valves, in particular to a valve opening and closing tool and a check valve matching mechanism.

Background

The key valve domestic development project for liquefied natural gas requires that the check valve needs to be subjected to a whole valve low-temperature fatigue life test for 2000 times at a test temperature of-196 ℃, namely, the valve clack is repeatedly opened and closed for 2000 times, when the check valve is placed in a low-temperature environment, the valve needs to be manually opened, and the valve cannot be opened by manual operation because the valve is soaked in an ultra-low-temperature liquid nitrogen pool at the temperature of-196 ℃.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the manual operation cannot realize the opening and closing of the valve when the check valve in the prior art is used for the low-temperature fatigue life test of the whole machine, thereby providing a valve opening and closing work and check valve matching mechanism.

The utility model provides a frock is opened and close to valve, includes the opening and closing piece, and it includes extension and fixed part, the fixed part can be dismantled with the valve body and be connected, the one end of extension is connected with the power take off end of opening and closing piece, and the other end stretches into in the medium passageway of valve body, the direction of delivery of extension and the flow direction parallel arrangement of medium, it receives the drive of drive power, the extension to the valve clack is close to and with the valve clack butt, in order to drive the first position of the relative valve body of valve clack is close to and keeps away from.

Optionally, in the above-mentioned frock is opened and close to valve, still include the mount pad, the fixed part with pass through between the valve body the mount pad is connected set up the confession on the mount pad delivery channel that the extension passes through, the mount pad with the valve body can be dismantled sealing connection.

Optionally, in the above valve opening and closing tool, the mounting seat is connected to the valve body through a lip-shaped sealing ring in a sealing manner.

Optionally, in the above valve opening and closing tool, the opening and closing member is an air cylinder, the air cylinder includes a cylinder body and a piston rod, the air cylinder is used as the extension portion to open and close the valve, and at least one lip-shaped sealing ring is disposed between the piston rod and the cylinder body.

Optionally, in the above valve opening and closing tool, an adjusting part is installed at one end of the piston rod close to the valve flap, and the adjusting part is an adjusting screw.

Optionally, in the above-mentioned frock is opened and close to the valve, still include the control, the control with the cylinder electricity is connected.

A check valve mating mechanism comprising: a valve body having a medium passage; a valve flap positioned within the media passage having a closed state in a first position; the opening and closing tool is any one of the opening and closing tools, a fixing part of the opening and closing tool is connected with the valve body, and the extending part drives the valve clack to be close to and far away from the first position.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a valve opening and closing tool which comprises an opening and closing piece and a fixing portion, wherein the fixing portion is detachably connected with a valve body, one end of the extending portion is connected with a power output end of the opening and closing piece, the other end of the extending portion extends into a medium channel of the valve body, the conveying direction of the extending portion is parallel to the flow direction of a medium and is driven by a driving force, and the extending portion is close to and abutted against a valve clack to drive the valve clack to be close to or far away from a first position of the valve clack relative to the valve body.

The frock is opened and close to valve of this structure, can dismantle with the valve body through the fixed part with opening and close the piece and be connected, the one end of extension is connected with the power take off end of opening and close the piece, the other end stretches into in the medium passageway of valve body, when need carry out two thousand complete machine fatigue tests to the valve, only need install the fixed part on the valve body, then utilize being close to and keeping away from of the relative primary importance of extension drive valve clack, realize the effect that the valve was opened and close, accomplish the fatigue test that the valve clack was opened and close 2000 times repeatedly, need not opening and close of operating personnel operation valve clack and can accomplish this fatigue test, be adapted to in ultra-low temperature environment, carry out the lamella and open and close fatigue test, need not manually operation, and after experimental completion, only need to open and close the piece from the valve body dismantle can, and is simple in operation, and convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a fitting mechanism for mounting a tool to a valve according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of the structure at A shown in FIG. 1;

description of reference numerals:

1. an opening and closing member; 11. an extension portion; 12. a fixed part;

2. a mounting seat; 3. an adjustment member; 4. a control member;

5. a valve body; 51. a media channel;

6. and the valve clack.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The embodiment describes a valve opening and closing tool, referring to fig. 1 and fig. 2, the tool includes a closing and opening element 1, for driving a valve flap 6 of the valve to approach and separate from a first position, the first position is a position where a bottom end of the valve flap 6 contacts with a valve body 5 to make the valve in a closed state, specifically, the closing and opening element 1 includes an extension portion 11 and a fixing portion 12, wherein the fixing portion 12 is detachably connected with the valve body 5, one end of the extension portion 11 is connected with a power output end of the closing and opening element 1, the other end thereof extends into a medium channel 51 of the valve body 5, and a conveying direction of the extension portion 11 is parallel to a medium flow direction, after the extension portion 11 is driven by a driving force, the extension portion 11 can approach and abut against the valve flap 6 to drive the valve flap 6 to approach and separate from the first position of the valve body 5, so as to realize an opening and closing effect of the valve, two thousand fatigue tests of valve clack 6 are accomplished, need not manually operation valve clack 6 and open and close, can be applicable to 196 ℃ below zero ultra-low temperature environment, easy operation, it is convenient.

In this embodiment, above-mentioned frock is opened and close to valve still includes mount pad 2, is connected through this mount pad 2 between above-mentioned fixed part 12 and the valve body 5, sets up the transfer passage who supplies extension 11 to pass through on this mount pad 2, and sealing connection can be dismantled with valve body 5 to this mount pad 2, and is concrete, all through fastener fixed connection between above-mentioned fixed part 12 and the mount pad 2 and between mount pad 2 and the valve body 5, and the mounting means is simple, can high-efficient the dismantlement.

Wherein, in order to guarantee the operation leakproofness when fatigue test, through lip seal sealing connection between mount pad 2 and valve body 5, and this lip seal can be applicable to the experimental environment of ultra-low temperature, the completion of assurance test.

In this embodiment, the above-mentioned opening and closing member 1 is a cylinder, this cylinder includes cylinder body and piston rod, regard this piston rod as extension 11 in order to realize opening and closing of valve, the cylinder body is as fixed part 12, be equipped with an at least lip seal between piston rod and cylinder body, can guarantee that the piston rod is when along transfer passage reciprocating motion, the leakproofness between piston rod and the cylinder body, and this lip seal can be applicable to super low temperature's experimental environment, guarantee experimental completion, wherein, regulating part 3 is installed to the one end that is close to valve clack 6 on this piston rod, regulating part 3 is the adjusting screw, can adjust the clearance with valve clack 6 head according to actual conditions, carry out displacement compensation.

Of course, above-mentioned opening and closing member 1 also can adopt ultra-low temperature step motor, regards step motor's output shaft as power take off end and connects extension 11, and this extension 11 can be the extension rod, utilizes step motor drive extension rod along transfer passage reciprocating motion to the realization drives the relative primary importance of valve and is close to and the effect of keeping away from, and then accomplishes the ultra-low temperature fatigue test of valve.

In this embodiment, in the above-mentioned frock is opened and close to valve, still include control 4, this control 4 is connected with the cylinder electricity for the piston rod that is used for the cylinder is flexible to count to the number of times of opening and close of statistics valve clack 6, this control 4 can adopt PLC control.

Example 2:

the present embodiment describes a check valve fitting mechanism, which, referring to fig. 1, includes: a valve body 5 having a medium passage 51; a valve flap 6 located within the media passage 51 having a closed state in a first position; and a fixing part 12 of the opening and closing tool is connected with the valve body 5, and the extending part 11 drives the valve clack 6 to approach and depart from the first position.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a frock is opened and close to valve which characterized in that includes:

the opening and closing piece (1) comprises an extension part (11) and a fixing part (12), the fixing part (12) is detachably connected with the valve body (5), one end of the extension part (11) is connected with a power output end of the opening and closing piece (1), the other end of the extension part extends into a medium channel (51) of the valve body (5), the conveying direction of the extension part (11) is parallel to the flowing direction of a medium and is driven by a driving force, and the extension part (11) is close to the valve clack (6) and is abutted against the valve clack (6) so as to drive the valve clack (6) to be close to and far away from the first position of the valve body (5).

2. The valve opening and closing tool according to claim 1, further comprising an installation seat (2), wherein the fixing portion (12) is connected with the valve body (5) through the installation seat (2), a conveying channel for the extension portion (11) to pass through is formed in the installation seat (2), and the installation seat (2) is detachably and hermetically connected with the valve body (5).

3. The valve opening and closing tool according to claim 2, wherein the mounting seat (2) is in sealing connection with the valve body (5) through a lip-shaped sealing ring.

4. The valve opening and closing tool according to any one of claims 1 to 3, wherein the opening and closing member (1) is a cylinder, the cylinder comprises a cylinder body and a piston rod, the cylinder body is used as the extension portion (11) to open and close the valve, and at least one lip-shaped sealing ring is arranged between the piston rod and the cylinder body.

5. The valve opening and closing tool according to claim 4, wherein an adjusting piece (3) is installed at one end, close to the valve clack (6), of the piston rod, and the adjusting piece (3) is an adjusting screw.

6. The valve opening and closing tool according to claim 5, further comprising a control element (4), wherein the control element (4) is electrically connected with the cylinder.

7. A check valve engagement mechanism, comprising:

a valve body (5) having a medium passage (51);

a valve flap (6) located within the media passage (51) having a closed state in a first position;

an opening and closing tool according to any one of claims 1 to 6, wherein a fixing portion (12) of the opening and closing tool is connected with the valve body (5), and the extending portion (11) drives the valve flap (6) to move towards and away from the first position.