CN213064846U

CN213064846U - Signal acquisition device for valve controller

Info

Publication number: CN213064846U
Application number: CN202021302087.5U
Authority: CN
Inventors: 郭燕; 张逵; 赵继明
Original assignee: Weifang Ruichi Transmission Machinery Co ltd
Current assignee: Weifang Ruichi Transmission Machinery Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-27
Anticipated expiration: 2030-07-06

Abstract

A signal acquisition device for a valve controller comprises an output shaft and a cam, wherein the output shaft and the cam are driven by a valve to rotate, a mandrel is driven by a spring to tightly push the cam, a movable contact plate is arranged on the mandrel, a first contact is arranged on one side surface of the movable contact plate, a first fixed contact plate is arranged in front of the first contact, a second contact is arranged on the other side surface of the movable contact plate, a second fixed contact plate is arranged in front of the second contact, a first signal is sent out when the first contact is in contact with the first fixed contact plate, a second signal is sent out when the second contact is in contact with the second fixed contact plate, and the valve is judged to be opened or closed according to the sent first signal and the sent second signal. The utility model discloses a structure of an integrated cam on valve accuse unit output shaft to convert the rotation angle position of valve accuse unit to rectilinear position, and the touch panel contact of different positions in this in-process and the sensor, produce the signal output who corresponds with the switch position, have simple structure, maintain convenient advantage.

Description

Signal acquisition device for valve controller

Technical Field

The utility model relates to large-scale high-pressure valve switch position determination field, specific signal pickup assembly for valve controller that says so.

Background

The large and high-pressure valves are high in opening pressure, safety and reliability are required, and hydraulic control is often adopted, namely a hydraulic valve control unit is installed on the valve. However, the valve with the valve control unit installed therein is usually detected for its open and closed position by means of a transponder installed on the valve control unit. The conventional valve signal transmitter is generally installed above the actuator as a single body, and the internal structure thereof is mainly realized by a cam linkage microswitch, as shown in the prior art CN 208474269U. This design presents two problems during use: a. the valve control unit is independently arranged above the valve control unit, and has larger volume and inconsistent appearance; b. the internal structure is complicated, and the maintenance is difficult after damaging, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that current valve echo ware exists bulky, inner structure is complicated, the maintenance cost is high, the utility model provides a signal acquisition device for valve controller through the structure of the cam of integration on valve accuse unit output shaft to convert the rotation angle position of valve accuse unit to the straight line position, and the touch panel contact of different positions in this in-process and the sensor, produce the signal output who corresponds with the switch position, have simple structure, maintain convenient advantage.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a signal acquisition device for a valve controller, comprising a valve control unit having: the cam component is driven by the valve to rotate, and the cam component synchronously rotates with the output shaft;

the mandrel is driven by a spring to tightly push the mandrel against the cam, a movable contact plate is arranged on the mandrel, a first contact is arranged on the surface of one side of the movable contact plate, a first fixed contact plate corresponding to the first contact is arranged in front of the motion track of the first contact, a second contact is arranged on the surface of the other side of the movable contact plate, and a second fixed contact plate corresponding to the second contact is arranged in front of the motion track of the second contact;

the valve drives the cam on the output shaft to rotate between the lowest point A and the highest point B in the opening or closing switching process, the mandrel is pushed to move along the axial direction of the valve, in the moving process, a first signal is sent out when the first contact is in contact with the first fixed contact plate, a second signal is sent out when the second contact is in contact with the second fixed contact plate, and the opening or closing of the valve is judged according to the sent first signal and the sent second signal.

As an optimized scheme of the signal acquisition device, the output shaft is provided with an annular boss, and the cam is arranged on the annular boss.

As another optimization scheme of the signal acquisition device, the valve control unit is provided with a threaded hole, the threaded hole is internally connected with a sensor shell through threads, the mandrel is arranged in the sensor shell, one end of the mandrel is in edge contact with the cam, the other end of the mandrel extends into a junction box, the movable contact plate is fixed at one end of the mandrel in the junction box through a bolt, and the first fixed contact plate and the second fixed contact plate are both located in the junction box.

As another optimized scheme of the signal acquisition device, the junction box is sealed by a sealing plate and is in interference fit with the sensor shell; the core shaft is provided with an annular clamping table, the spring surrounds the core shaft, one end of the spring is propped against the annular clamping table, and the other end of the spring is propped against the junction box, so that the core shaft is kept to be tightly propped against the cam.

As another optimization scheme of the signal acquisition device, a contact head is arranged at one end of the mandrel and tightly propped against the edge of the cam.

As another optimization scheme of the signal acquisition device, a wiring device is arranged in the sensor housing and used for connecting the second fixed contact plate and the first fixed contact plate into a circuit, so that different signals are sent out when the first contact is in contact with the first fixed contact plate or when the second contact is in contact with the second fixed contact plate.

As another optimized scheme of the signal acquisition device, the movable contact plate is circular, four fins are uniformly distributed around the edge of the movable contact plate, two first contacts are arranged on the same side surface of the two opposite fins respectively, and two second contacts are arranged on the same side surface of the other two fins and are different from the first contacts.

As another optimization scheme of the signal acquisition device, when the valve is in the opening position, the end part of the mandrel tightly props against the lowest point A of the cam, and at the moment, the first contact is in contact with the first fixed contact plate; when the valve is in a closed position, the end part of the mandrel tightly props against the highest point B of the cam, and at the moment, the second contact is in contact with the second fixed contact plate; when the end part of the mandrel tightly props against any position between the highest point B and the lowest point A of the cam, the first contact is not in contact with the first fixed contact plate, and the second contact is not in contact with the second fixed contact plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the utility model integrates a cam structure on the output shaft of the valve control unit, thereby converting the rotation angle position of the valve control unit into a linear position, contacting with the touch plates at different positions in the sensor in the process, generating a signal output corresponding to the switch position, and having the advantages of simple structure and convenient maintenance;

2) the utility model discloses a sensor, its core lies in along with the valve open with the closed in-process synchronous pivoted cam drive the axial displacement of dabber, at the epaxial installation movable contact panel of dabber, the dabber is at the axial displacement in-process like this, two sets of contacts on it respectively with two sets of fixed contact panel contacts to form two different circuits and send different signals, and with this sign opening and closing of valve, simple structure, it is convenient to maintain, cost greatly reduced also.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a detailed structural schematic diagram of the present invention;

FIG. 3 is a schematic structural view of a movable touch plate;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a schematic view of the cam;

reference numerals: 1. the device comprises a valve control unit, 2, an output shaft, 3, a cam, 4, a threaded hole, 5, a sensor shell, 6, a contact head, 7, a mandrel, 8, a movable contact plate, 9, a bolt, 10, a spring, 11, a junction box, 12, a first fixed contact plate, 13, a second fixed contact plate, 14, a sealing plate, 15, a wiring device, 16, a first contact, 17 and a second contact.

Detailed Description

The technical solution of the present invention will be further elaborated with reference to the following specific embodiments.

Example 1

As shown in fig. 1, 2 and 5, a signal acquisition apparatus for a valve controller includes a valve control unit 1, the valve control unit 1 having: the cam component is driven by the valve to rotate by the output shaft 2 and synchronously rotates with the output shaft 2, and a cam 3 of the cam component is provided with a lowest point A and a highest point B;

a mandrel 7 driven by a spring 10 to tightly push the cam 3, a movable contact plate 8 is arranged on the mandrel 7, a first contact 16 is arranged on one side surface of the movable contact plate 8, a first fixed contact plate 12 corresponding to the first contact 16 is arranged in front of the motion track of the first contact 16, a second contact 17 is arranged on the other side surface of the movable contact plate 8, and a second fixed contact plate 13 corresponding to the second contact 17 is arranged in front of the motion track of the second contact 17;

in the opening or closing switching process of the valve, the cam 3 on the output shaft 2 is driven to rotate between the lowest point A and the highest point B, the mandrel 7 is pushed to move along the axial direction of the mandrel, in the moving process, a first signal is sent out when the first contact 16 is in contact with the first fixed contact plate 12, a second signal is sent out when the second contact 17 is in contact with the second fixed contact plate 13, and the opening or closing of the valve is judged according to the sent first signal and the sent second signal.

In the present embodiment, the first contact 16 emitting the first signal when contacting the first fixed contact 12 means that the first fixed contact 12 is connected to a signal emitting circuit, and when the first contact 16 contacts the first fixed contact 12, the signal emitting circuit is turned on to emit the signal. Similarly, the second contact 17 contacts the second fixed contact plate 13 to send out a second signal, and the principle is the same.

In this embodiment, the fixed contact plate is a disconnected signal transmitting loop, and when the contact on the movable contact plate is in contact with the fixed contact plate, the disconnected signal transmitting loop can be communicated.

The above embodiment is the basic implementation of the present invention, which explains the basic structure and principle of the present invention, and can be improved and optimized on the basis of the above structure and principle, thereby obtaining the following embodiments:

example 2

This embodiment is an improvement on the basis of embodiment 1, and the main structure thereof is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 2, the output shaft 2 has an annular boss thereon, and the cam 3 is disposed on the annular boss so that its edge is away from the output shaft 2.

Example 3

The present embodiment is another improvement on the basis of embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 2, the valve control unit 1 has a threaded hole 4, the threaded hole 4 corresponds to the cam 3, a sensor housing 5 is connected in the threaded hole 4 through a thread, the spindle 7 is disposed in the sensor housing 5, one end of the spindle 7 contacts with the edge of the cam 3, the other end of the spindle extends into a junction box 11, the movable contact plate 8 is fixed on one end of the spindle 7 in the junction box 11 through a bolt 9, and the first fixed contact plate 12 and the second fixed contact plate 13 are both located in the junction box 11.

Example 4

The present embodiment is a further improvement on the basis of embodiment 3, and the main structure thereof is the same as embodiment 3, and the improvement point is that: as shown in fig. 2, the terminal box 11 is sealed by a sealing plate 14 and is in interference fit with the sensor housing 5, that is, the sensor housing 5 is a cylindrical housing, the terminal box 11 is also cylindrical, and the terminal box 11 is located at one end in the sensor housing 5 and is in interference fit with the sensor housing 5; the mandrel 7 has an annular abutment against which a spring 10 surrounds the mandrel 7 and bears with one end against the terminal block 11 with the other end, so that the mandrel 7 is held against the cam 3.

Example 5

The present embodiment is a further improvement on the basis of embodiment 3, and the main structure thereof is the same as embodiment 3, and the improvement point is that: as shown in fig. 2, a contact head 6 is provided on one end of the mandrel 7, and the contact head 6 abuts against the edge of the cam 3, that is, the mandrel 7 contacts with the edge of the cam 3 through the contact head 6.

Of course, the present embodiment may also be modified based on embodiment 1, and the modified content is the same.

Example 6

The present embodiment is a further improvement on the basis of embodiment 3, and the main structure thereof is the same as embodiment 3, and the improvement point is that: as shown in fig. 2, a wiring device 15 is disposed in the sensor housing 5, and the wiring device 15 is used for connecting the second fixed contact plate 13 and the first fixed contact plate 12 into a circuit, so that the first contact 16 and the first fixed contact plate 12 or the second contact 17 and the second fixed contact plate 13 send out different signals when contacting.

Of course, this embodiment may also be modified based on embodiment 4, and the modified content is the same.

Example 7

The present embodiment is another improvement on the basis of embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 3 and 4, the movable contact plate 8 is circular, four wing pieces are uniformly distributed around the edge of the movable contact plate, and the middle part of the movable contact plate 8 is provided with a connecting hole for connecting and fixing with the mandrel 7; the two first contacts 16 are respectively arranged on the same side surface of the two opposite fins, and the two second contacts 17 are respectively arranged on the same side surface of the other two fins and are different from the first contacts 16.

Example 8

The present embodiment is another improvement on the basis of embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: when the valve is in an opening position, the end part of the mandrel 7 is tightly pressed against the lowest point A of the cam 3, and at the moment, the first contact 16 is contacted with the first fixed contact plate 12; when the valve is in a closed position, the end part of the mandrel 7 tightly props against the highest point B of the cam 3, and at the moment, the second contact 17 is in contact with the second fixed contact plate 13; when the end of the mandrel 7 is tightly pressed at any position between the highest point B and the lowest point A of the cam 3, the first contact 16 is not in contact with the first fixed contact plate 12, and the second contact 17 is not in contact with the second fixed contact plate 13.

The above embodiments of the present invention can be combined to obtain other new technical solutions.

The working principle of the utility model is as follows:

1) an output shaft 2 is arranged in the valve control unit 1, and the valve is driven to rotate through the output shaft 2, so that the valve is opened and closed;

2) the output shaft 2 is provided with a cam 3, and a circle of the edge of the cam 3 is provided with a highest point B and a lowest point A;

3) a threaded hole 4 is formed in the position, opposite to the cam 3, of the valve control unit 1, a sensor shell 5 is arranged in the threaded hole 4 through threads, a mandrel 7 and a wiring device 15 are installed in the sensor shell 5, and the wiring device 15 is used for being connected with an external circuit so as to send out a signal when a circuit is connected;

4) one end of the mandrel 7 is contacted with the edge of the cam 3, the other end of the mandrel 7 is provided with a movable contact plate 8, two side surfaces of the movable contact plate 8 are respectively provided with a first contact 16 and a second contact 17, two sides of the moving track of the movable contact plate 8 are respectively provided with a first fixed contact 12 and a second fixed contact 13, one end of the mandrel 7, the movable contact plate 8, the first fixed contact 12 and the second fixed contact 13 are all packaged in a junction box 11, the junction box 11 is fixed in the sensor shell 5, a spring 10 is wound on the mandrel 7, one end of the spring 10 is fixed with the mandrel 7, the other end of the spring is fixed on the junction box 11, so that the mandrel 7 keeps the pressing force on the cam 3 and provides a certain restoring force, when the cam 3 rotates, the mandrel 7 can be driven to reciprocate, the first contact 16 is contacted with or separated from the first fixed contact 12, and the second contact 17 is contacted with or separated from the second fixed contact 13, the first fixed contact plate 12 and the second fixed contact plate 13 are both provided with circuits, so that when the first contact 16 is in contact with the first fixed contact plate 12, the circuit on the first fixed contact plate 12 is conducted to send a signal, and when the second contact 17 is in contact with the second fixed contact plate 13, the circuit on the second fixed contact plate 13 is conducted to send another signal, and the position of the valve is determined according to the two signals, specifically as follows:

a) when the output shaft 2 of the valve control unit 1 is held together with the valve at a certain initial position, the lowest point a of the cam 3 on the output shaft 2 faces the contact head 6 of the spindle 7 (for convenience of description, the initial position is the valve open position as an example). Since the spring 10 is provided with a pre-compression amount, it always maintains a certain restoring force to the spindle 7 and the contact head 6, forcing the contact head 6 into contact with the cam 3; when the cam 3 is located at the lowest point a, the first contact 16 on the movable contact plate 8 is ensured to be in contact with the first fixed contact plate 12, the circuit of the first fixed contact plate 12 is closed, and a circuit signal is output; at this time, the second contact 17 is disconnected from the second fixed contact plate 13, the circuit of the second fixed contact plate 13 is opened, no signal is output, and the state corresponds to the opening of the valve;

b) on the contrary, when the output shaft 2 of the valve control unit 1 and the valve move to the closing position together, the cam 3 on the output shaft 2 moves from the lowest point a to the highest point B, the cam 3 presses the contact head 6 to move, so as to drive the core shaft 7 and the movable contact plate 8 to move together, when the cam moves to the highest point B, the second contact 17 on the movable contact plate 8 contacts with the second fixed contact plate 13, the circuit of the second fixed contact plate 13 is closed, and a circuit signal is output; at this time, the first contact 16 is disconnected from the first fixed contact 12, the first fixed contact 12 is electrically opened, no signal is output, and the state corresponds to the valve being closed.

c) When the valve is in the middle position, the first contact 16 on the movable contact plate 8 is in a disconnected state with the first fixed contact plate 12, and the second contact 17 and the second fixed contact plate 13 are also in a disconnected state, and no signal is output.

Claims

1. A signal acquisition device for a valve controller, comprising a valve control unit (1), the valve control unit (1) having: the cam component is driven by the valve to rotate by the output shaft (2) and synchronously rotates with the output shaft (2), and a cam (3) of the cam component is provided with a lowest point A and a highest point B;

the mandrel (7) is driven by a spring (10) to tightly push the cam (3), a movable contact plate (8) is arranged on the mandrel (7), a first contact (16) is arranged on the surface of one side of the movable contact plate (8), a first fixed contact plate (12) corresponding to the first contact (16) is arranged in front of the motion track of the first contact (16), a second contact (17) is arranged on the surface of the other side of the movable contact plate (8), and a second fixed contact plate (13) corresponding to the second contact (17) is arranged in front of the motion track of the second contact (17);

the valve drives the cam (3) on the output shaft (2) to rotate between the lowest point A and the highest point B in the opening or closing switching process, the mandrel (7) is pushed to move along the axial direction of the valve, in the moving process, a first signal is sent out when the first contact (16) is in contact with the first fixed contact plate (12), a second signal is sent out when the second contact (17) is in contact with the second fixed contact plate (13), and the opening or closing of the valve is judged according to the sent first signal and the second signal.

2. The signal acquisition device for the valve controller according to claim 1, wherein: the output shaft (2) is provided with an annular boss, and the cam (3) is arranged on the annular boss.

3. The signal acquisition device for the valve controller according to claim 1, wherein: the valve control unit (1) is provided with a threaded hole (4), a sensor shell (5) is connected in the threaded hole (4) through threads, the mandrel (7) is arranged in the sensor shell (5), one end of the mandrel (7) is in edge contact with the cam (3), the other end of the mandrel (7) extends into a junction box (11), the movable contact plate (8) is fixed at one end, located in the junction box (11), of the mandrel (7) through a bolt (9), and the first fixed contact plate (12) and the second fixed contact plate (13) are located in the junction box (11).

4. A signal collecting device for a valve controller according to claim 3, wherein: the junction box (11) is sealed through a sealing plate (14) and is in interference fit with the sensor shell (5); the mandrel (7) is provided with an annular clamping table, the spring (10) surrounds the mandrel (7), one end of the spring is abutted against the annular clamping table, and the other end of the spring is abutted against the junction box (11), so that the mandrel (7) is kept tightly abutted against the cam (3).

5. A signal pickup apparatus for a valve controller according to claim 1 or 3, wherein: one end of the mandrel (7) is provided with a contact head (6), and the contact head (6) is tightly propped against the edge of the cam (3).

6. The signal collecting device for the valve controller according to claim 3 or 4, wherein: a wiring device (15) is arranged in the sensor shell (5), and the wiring device (15) is used for connecting the second fixed contact plate (13) and the first fixed contact plate (12) into a circuit, so that different signals are sent out when the first contact (16) is contacted with the first fixed contact plate (12) or the second contact (17) is contacted with the second fixed contact plate (13).

7. The signal acquisition device for the valve controller according to claim 1, wherein: the movable contact plate (8) is circular, four fins are uniformly distributed around the edge of the movable contact plate, two first contacts (16) are arranged on the same side surface of the two opposite fins respectively, and two second contacts (17) are arranged on the same side surface of the other two fins and are different from the first contacts (16).