CN2674494Y

CN2674494Y - Automatic controller for intelligent electric head

Info

Publication number: CN2674494Y
Application number: CN 200320131443
Authority: CN
Inventors: 冯奇峰; 马玉山; 李芃; 田志华; 崔学智; 贾华
Original assignee: Wuzhong Meter Co ltd
Current assignee: Ningxia Yinxing Energy Co ltd; Wuzhong Instrument Co Ltd
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2005-01-26
Anticipated expiration: 2013-12-12

Abstract

The utility model relates to a controller for the electric head of a valve actuator, in particular to an automatic controller for intelligent electric head. The utility model composed of a motor, a reduction apparatus connected with the output end of the motor and a detection controller is characterized in that the output shaft of the reduction apparatus connected with the motor is a quill shaft intersected by a screw rod. The detection controller constitutes a thrust pickup installed on the output shaft of the motor, a valve position sensor connected with the output shaft of the reduction apparatus, an A / D converter connected with the thrust pickup and the valve position sensor through conducting wires, an SCM connected with the output end of the A / D converter and a motor control module connected with the SCM. The utility model provided with valve position memory function can implement automatic control to the state of positive rotation, reversal rotation and stopping, and carry out automatic compensation after a valve base is wore out to make sure the reliable close of a valve. The utility model has the advantages of broad application, professional design and good use effect, so it is in convenient for popularization and application.

Description

Intelligent electric head automaton

Technical field

The utility model relates to a kind of valve actuating mechanism electrical header control device, particularly relates to a kind of intelligent electric head automaton.

Background technology

At present, existing variable valve electrical header control device, be by adjustable potentiometer, preset the control module that input signal circuit, control valve opening feedback signal input circuit, comparator circuit, amplifying circuit and forward and reverse control circuit constitute with the Analogous Integrated Electronic Circuits overlap joint, this control device can receive simulating signal, and the rotating of pressing the simulating signal control motor of being given, thereby realize the open and close of topworks.This control device is gathered the aperture feedback signal of stem position signal as variable valve.Its shortcoming is that one is that this control device is that pre-set criteria signal and control valve opening feedback signal are compared, carry out corresponding actions according to comparative result, but if valve wearing and tearing occur after using certain hour, the stem position signal of this control device collection can not the accurate response valve open or is closed situation, and this control device can not be revised automatically to the wearing and tearing of valve seat, operate miss can occur; The 2nd, this control device circuit adopts mimic channel, and its conversion of signals transmission link is many, and system reliability is poor, and the conversion of its mode of action realizes that with physical switch its operation inconvenience and man-machine conversation function are poor.

Summary of the invention

The utility model provides a kind of and can monitor the intelligent electric head automaton that stem position can be monitored the valve switch state again and can be revised the wearing and tearing of valve seat automatically for overcoming above-mentioned defective.

As follows for realizing the technical scheme that the purpose of this utility model adopted:

A kind of intelligent electric head automaton, comprise motor, be connected in the reduction gear and the detection control apparatus of motor output end, the output shaft that it is characterized in that the reduction gear that links to each other with motor is a quill shaft, in quill shaft, be penetrated with a leading screw, described detection control apparatus is included in the thrust pickup of installing on the output shaft of above-mentioned motor, the valve position sensor that links to each other with the output shaft of reduction gear, by lead and thrust pickup, A/D converter, the single-chip microcomputer that links to each other with the output terminal of described A/D converter and the motor control module that links to each other with single-chip microcomputer that valve position sensor links to each other.

Described motor control module is by code translator, solid-state relay I, solid-state relay II, solid-state relay III constitutes, described code translator links to each other with single-chip microcomputer, its output terminal respectively with solid-state relay I, solid-state relay II, solid-state relay III links to each other, contact A in the normally opened contact of described solid-state relay I respectively with solid-state relay II, the contact B of solid-state relay III normally opened contact, C links to each other, contact A in the described solid-state relay I normally opened contact ' link to each other with power supply, contact B ' in the solid-state relay II normally opened contact links to each other with the positive crossover of motor, and the contact C ' in the solid-state relay III normally opened contact links to each other with the counter-rotating circuit of motor.

Described reduction gear is worm gear, worm gear box.

Described leading screw is a ball-screw, and the endoporus and the ball-screw of worm-wheel shaft match, and worm-wheel shaft top outer rim is a worm screw, is furnished with a worm gear mutually with worm screw, and its output shaft links to each other with valve position sensor.

Described valve position sensor is a corner formula potentiometer.

Also a thrust pickup can be installed on the output shaft of described motor.

Described thrust pickup is a linear sliding potentiometer, and its moving contact links to each other with the output shaft of motor.

Control device of the present utility model adopts the embedded scm exploitation to form; control function is abundant; can carry out the selection of control mode easily according to actual needs; can accept simulation; manually; multiple input signal such as bus; and use digital switch alternative physical switch; just can finish function conversion and setting easily by single-chip microcomputer institute tape input device keyboard; adopt unique physical construction and high performance linear sliding potentiometer to cooperate the limit function of having finished two-way overload protective; make electrical header not only can join common valve; also can under the situation that does not increase any equipment, wear T-valve; simultaneously by monitoring to linear sliding potentiometer; it is adjustable to make the power output of electrical header become power output from definite value; expanded the scope of wearing valve, increased the valve position memory function, by detection to high-precision valve position feedback potentiometer; it can be compensated behind the prooving of valve seat automatically; valve can be closed reliably, guarantee leakage class, prolonged the serviceable life of valve.The utility model is reasonable in design, result of use good, helps applying.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 cuts open synoptic diagram for the utility model A-A;

Fig. 3 is the utility model detection control apparatus electrical structure synoptic diagram.

Embodiment

In conjunction with the accompanying drawings the utility model is further described:

As shown in Figure 1, 2, motor 1 output terminal is connected with worm screw 9, the moving contact of linear sliding potentiometer 22 is installed between described worm screw 9 and motor 1 output terminal, in the bottom of worm screw 9 spring 23 is installed, described worm screw 9 is meshed with worm gear 8, worm-wheel shaft 18 is a hollow, one ball-screw 10 runs through worm-wheel shaft 18 and links to each other with valve rod 24, the endoporus of worm-wheel shaft 18 and ball-screw 10 match, worm-wheel shaft 18 top outer rims are a worm screw 19, be furnished with a worm gear 20 mutually with worm screw 19, its output shaft links to each other with corner formula potentiometer 21, and corner formula potentiometer 21 is fixed on the casing by base.

As shown in Figure 3, above-mentioned linear sliding potentiometer 22 all links to each other with A/D converter 5 by lead with corner formula potentiometer 23, the output terminal of A/D converter 5 links to each other with single-chip microcomputer 6, described single-chip microcomputer 6 control signal output ends link to each other with code translator 11, three output terminals of described code translator 11 respectively with solid-state relay I12, solid-state relay II13, solid-state relay III14 links to each other, contact A in the normally opened contact of described solid-state relay I12 respectively with solid-state relay II13, the contact B of solid-state relay III14 normally opened contact, C links to each other, contact A in the described solid-state relay I12 normally opened contact ' link to each other with power supply 15, contact B ' in the solid-state relay II13 normally opened contact links to each other with the positive crossover 16 of motor, and the contact C ' in the solid-state relay III13 normally opened contact links to each other with the counter-rotating circuit 17 of motor.

The utility model control hardware adopts the embedded scm exploitation to form, the design of Single Chip Microcomputer (SCM) program adopts advanced Object-oriented Technique to trigger the events corresponding handling procedure according to the feedback signal of keyboard input signal and thrust pickup 3, valve position sensor 4, and the trigger sequence of incident comes work according to the significance level priority level of incident.In the real work, after the steering order that operating personnel open or close from keyboard input valve, single-chip microcomputer 6 sends control signal corresponding according to the signal of keyboard output, make solid-state relay I12, solid-state relay II13 and solid-state relay I12, solid-state relay III14 make up break-make, give the electricity of motor 1, make motor 1 forward or reverse for both forward and reverse directions.In motor 1 rotation process, corner formula potentiometer 21 is according to the movement position output current signal corresponding with control signal of valve rod 24, current signal converts digital signal to through A/D converter 5, single-chip microcomputer 6 is according to the monitoring of resulting digital signal realization to the mechanical mechanism state of motor 1 and connection thereof, linear sliding potentiometer 22 is monitored the on off state of valve according to the torque signal that transmits on the motor output shaft, single-chip microcomputer 6 can be determined motor 1 running status according to the torque signal that linear sliding potentiometer 22 monitors, when valve cuts out, the motor output torque constantly increases, linear sliding potentiometer 22 can constantly pass to torque signal single-chip microcomputer 6, when moment of torsion reaches certain value, 1 stall of single-chip microcomputer 6 control motors, valve realizes reliably cutting out.When valve was opened, motor 1 output torque reduced, and single-chip microcomputer 6 comprehensively sends control signal according to the signal of linear sliding potentiometer 22 and corner formula potentiometer 21 feedbacks according to its priority level single-chip microcomputer, the motion state of control motor 1.This realization is novel can not only to realize that motor just changes, reverses and stops the automatic control of three kinds of states, after wearing and tearing appear in valve seat, single-chip microcomputer 6 also can be according to the signal of linear sliding potentiometer 22 and corner formula potentiometer 21 feedbacks, wear condition is compensated automatically, valve can be closed reliably, guarantee leakage class, prolonged the serviceable life of valve.

In addition, the utility model also can be sent into remote control signal A/D converter 5, convert digital signal to by A/D converter 5 after, send into single-chip microcomputer 6, control electrical header by single-chip microcomputer 6 according to remote control signal and finish corresponding action, realize the remote control operation function of variable valve.

Claims

1, a kind of intelligent electric head automaton, comprise motor (1), be connected in the reduction gear and the detection control apparatus (2) of motor output end, the output shaft that it is characterized in that the reduction gear that links to each other with motor (1) is a quill shaft, in quill shaft, be penetrated with a leading screw, described detection control apparatus is included in the thrust pickup of installing on the output shaft of above-mentioned motor (1) (3), the valve position sensor (4) that links to each other with the output shaft of reduction gear, by lead and thrust pickup (3), A/D converter (5), the single-chip microcomputer (6) that links to each other with the output terminal of described A/D converter (5) and the motor control module (7) that links to each other with single-chip microcomputer (6) that valve position sensor (4) links to each other.

2, a kind of intelligent electric head automaton according to claim 1, it is characterized in that described motor control module (7) is by code translator (11), solid-state relay I (12), solid-state relay II (13), solid-state relay III (14) constitutes, described code translator (11) links to each other with single-chip microcomputer (9), its output terminal respectively with solid-state relay I (12), solid-state relay II (13), solid-state relay III (14) links to each other, contact A in the normally opened contact of described solid-state relay I (12) respectively with solid-state relay II (13), the contact B of solid-state relay III (14) normally opened contact, C links to each other, contact A in described solid-state relay I (12) normally opened contact ' link to each other with power supply (15), contact B ' in solid-state relay II (13) normally opened contact links to each other with the positive crossover (16) of motor, and the contact C ' in solid-state relay III (14) normally opened contact links to each other with the counter-rotating circuit (17) of motor.

3, a kind of intelligent electric head automaton according to claim 1 is characterized in that described reduction gear is worm gear (8), worm screw (9) reducing gear.

4, a kind of intelligent electric head automaton according to claim 1, it is characterized in that described leading screw is ball-screw (10), the endoporus of worm-wheel shaft (18) and ball-screw (10) match, worm-wheel shaft (18) top outer rim is a worm screw (19), be furnished with a worm gear (20) mutually with worm screw (19), its output shaft links to each other with valve position sensor (4).

5, a kind of intelligent electric head automaton according to claim 4 is characterized in that described valve position sensor (4) is a corner formula potentiometer (21).

6, a kind of intelligent electric head automaton according to claim 5 is characterized in that described thrust pickup (3) is a linear sliding potentiometer (22), and its moving contact links to each other with the output shaft of motor.