CN215214894U

CN215214894U - Take swing check valve structure of long-range monitorable valve position

Info

Publication number: CN215214894U
Application number: CN202120595104.7U
Authority: CN
Inventors: 岳阳; 李军业; 刘平
Original assignee: CNNC Sufa Technology Industry Co Ltd
Current assignee: CNNC Sufa Technology Industry Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-17
Anticipated expiration: 2031-03-24

Abstract

This novel check valve structure that belongs to, concretely relates to take swing check valve structure of long-range monitorable valve position. The utility model provides a take swing check valve structure of long-range monitorable valve position, wherein, includes the valve body, sets up the valve clack in the valve body, the inside shift fork subassembly that sets up of valve body, the tip of valve body sets up seal assembly. This neotype effect that is showing is: the valve position stroke structure with the remote monitorable function is utilized to remotely monitor the swing check valve, the valve position can be read, and whether the valve clack action is abnormal or not can be found in time, so that the abnormal reason of the valve can be judged, and the valve position stroke structure has the advantages of simple structure, high position indication precision and remarkable indication effect.

Description

Take swing check valve structure of long-range monitorable valve position

Technical Field

This novel check valve structure that belongs to, concretely relates to take swing check valve structure of long-range monitorable valve position.

Background

The conventional swing check valve, as shown in fig. 1, a common swing check valve generally cannot read any opening position of a valve flap remotely or only read a full-close position or a full position, and cannot judge whether a valve state is normal or not according to the action condition of the valve flap.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a to prior art's defect, provide a take long-range formula check valve structure of opening soon of monitoring valve position, this structure has designed a remote detection function to the formula check valve that opens soon, can carry out long-range reading valve clack stroke position control valve clack action condition to judge whether unusual appears in the valve, and in time maintain, the prevention occurence of failure is very suitable for the requirement of steam extraction system maintenance work such as supercritical thermal power, the conventional island of nuclear power.

This is novel to realize like this: the utility model provides a take swing check valve structure of long-range monitorable valve position, wherein, includes the valve body, sets up the valve clack in the valve body, the inside shift fork subassembly that sets up of valve body, the tip of valve body sets up seal assembly.

The swing check valve structure with the remote valve position monitoring function comprises a fork-shaped rocker arm, wherein a linkage shifting fork is arranged at the top end of the fork-shaped rocker arm, and the fork-shaped rocker arm is fixedly connected with a valve clack.

The swing check valve structure with the remote monitorable valve position further comprises a rotating shaft assembly, and the linkage shifting fork is connected with an external display device through the rotating shaft assembly.

The rotary check valve structure with the remote monitorable valve position comprises a rotary shaft assembly, wherein the rotary shaft assembly comprises a valve shaft, the valve shaft is a hollow barrel-shaped part, an indicating rotary shaft is arranged in the valve shaft, the valve shaft is fixedly connected with a sealing assembly, the indicating rotary shaft can rotate in the valve shaft, and the indicating rotary shaft is fixedly connected with a linkage shifting fork.

According to the swing check valve structure with the remote valve position monitoring function, the sealing assembly comprises a flange, and the flange is fixedly connected with the valve shaft.

The swing check valve structure with the remote monitorable valve position is characterized in that the flange and the valve shaft are additionally provided with sealing elements so as to increase the sealing performance.

According to the swing check valve structure with the remote monitorable valve position, the flange is provided with the feedback travel switch, the feedback travel switch is fixedly connected with the indicating rotating shaft, and the feedback travel switch can be driven by the indicating rotating shaft to rotate.

The structure of the swing check valve with the remotely monitorable valve position is as above, wherein a thrust washer is arranged between the feedback travel switch and the indicating rotating shaft.

This neotype effect that is showing is: the valve position stroke structure with the remote monitorable function is utilized to remotely monitor the swing check valve, the valve position can be read, and whether the valve clack action is abnormal or not can be found in time, so that the abnormal reason of the valve can be judged, and the valve position stroke structure has the advantages of simple structure, high position indication precision and remarkable indication effect.

Drawings

Fig. 1 is a schematic view of a conventional swing check valve.

FIG. 2 is a schematic view of the AA-oriented structure of FIG. 1;

FIG. 3 is a schematic view of the internal structure and opening angle of a swing check valve with remote travel monitoring;

FIG. 4 is a schematic view of the valve shaft of FIG. 3;

FIG. 5 is a schematic diagram of the external structure of a swing check valve with remote travel monitoring and a travel switch with feedback;

FIG. 6 is a perspective view of FIG. 5;

FIG. 7 is a schematic view of a transmission configuration with a remote travel monitoring swing check valve;

FIG. 8 is an indicating transmission configuration;

FIG. 9 is a schematic top view of the structure of FIG. 8;

FIG. 10 is a schematic view of a forked rocker arm

FIG. 11 is a schematic view of a ganged fork;

FIG. 12 is a left side view of FIG. 11;

FIG. 13 is a perspective view of FIG. 11

FIG. 14 is a schematic view of an indicating spindle;

wherein, 1, valve body, 2, forked rocker arm, 3, valve clack, 4 linkage shift fork, 5, indication rotating shaft, 6, valve shaft, 7, sealing element, 8, flange, 9, thrust washer, 10, feedback travel switch

Detailed Description

This patent is further described below with reference to the accompanying drawings:

as shown in fig. 3-14, a swing check valve structure with a remotely monitorable valve position mainly comprises a valve body 1, a fork-shaped rocker arm 2, a valve clack 3, a linkage shifting fork 4, an indication rotating shaft 5, a valve shaft 6, a sealing element 7, a flange 8, a thrust washer 9, a continuous feedback travel switch 10 with 4-20 mA and the like.

The medium in the pipeline pushes the valve clack and the fork-shaped rocker arm to open for a certain angle, and drives the linkage shifting fork to synchronously rotate the indicating rotating shaft, wherein the linkage shifting fork is in opening self-aligning transmission, so that the phenomenon of non-concentric rotation blocking can be avoided.

The indication rotating shaft is concentric with the shaft sleeve, the shaft sleeve does not rotate, the indication rotating shaft rotates to drive the 4-20 mA continuous feedback travel switch to synchronously rotate together, and the rotating position is converted into a current signal, so that the current signal is transmitted to the control system to display the actual valve clack position. The advantages are that 1, the on-site inspection can be carried out, and the remote monitoring can also be carried out; 2. the diameter of the indicating rotating shaft is small, the friction force is low, the sealing is reliable, the indicating rotating shaft is only related to the rotation of the valve clack, and the interference influence cannot be generated.

The foregoing detailed description is intended to be illustrative of the present patent and is not intended to be limiting, since any modifications and variations of the present patent are intended to fall within the spirit and scope of the appended claims.

Claims

1. The utility model provides a take swing check valve structure of long-range monitorable valve position which characterized in that: including valve body (1), set up valve clack (3) in valve body (1), valve body (1) inside sets up fork assembly, and the tip of valve body (1) sets up seal assembly.

2. The swing check valve structure with remotely monitorable valve positions of claim 1 wherein: the shifting fork assembly comprises a fork-shaped rocker arm (2), a linkage shifting fork (4) is arranged at the top end of the fork-shaped rocker arm (2), and the fork-shaped rocker arm (2) is fixedly connected with the valve clack (3).

3. The swing check valve structure with remotely monitorable valve positions of claim 2 wherein: the linkage shifting fork (4) is connected with an external display device through the rotating shaft component.

4. A swing check valve structure with remotely monitorable valve positions according to claim 3 and wherein: the pivot subassembly includes valve shaft (6), and valve shaft (6) are hollow tubbiness part, set up in valve shaft (6) and instruct pivot (5), and valve shaft (6) and seal assembly fixed connection instruct pivot (5) to rotate in valve shaft (6), instruct pivot (5) and linkage shift fork (4) fixed connection.

5. The swing check valve structure with remotely monitorable valve positions of claim 4 wherein: the sealing assembly comprises a flange (8), and the flange (8) is fixedly connected with the valve shaft (6).

6. The swing check valve structure with remotely monitorable valve positions of claim 5 wherein: the flange (8) and the valve shaft (6) are added with a sealing element (7) to increase the sealing performance.

7. The swing check valve structure with remotely monitorable valve positions of claim 6 wherein: set up feedback travel switch (10) on flange (8), feedback travel switch (10) and instruction pivot (5) fixed connection to feedback travel switch (10) can rotate under the drive of instruction pivot (5).

8. The swing check valve structure with remotely monitorable valve positions of claim 7 wherein: a thrust washer (9) is arranged between the feedback travel switch (10) and the indicating rotating shaft (5).