CN2498793Y - Positioner for immediately stopping motor without inertia shock of motor valve - Google Patents
Positioner for immediately stopping motor without inertia shock of motor valve Download PDFInfo
- Publication number
- CN2498793Y CN2498793Y CN 01233336 CN01233336U CN2498793Y CN 2498793 Y CN2498793 Y CN 2498793Y CN 01233336 CN01233336 CN 01233336 CN 01233336 U CN01233336 U CN 01233336U CN 2498793 Y CN2498793 Y CN 2498793Y
- Authority
- CN
- China
- Prior art keywords
- motor
- eccentric wheel
- control circuit
- automatic control
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
Disclosed is a motor immediate stop positioning device whose motor valve has no inertial impact. The device can be applied in the pass or resistance control of the motor valve and comprises an automatic control circuit A, a motor, an eccentric wheel and a speed reducer; the motor drives the eccentric wheel through the speed reducer; a positioning pin of the eccentric wheel is arranged at the extended line of a long shaft of the eccentric wheel, near one side of the axle center point; the automatic control circuit A controls the make-break operation of the motor power supply. The device also comprises a normally open follow-up switch K and a current-limiting resistance R; after the motor forms a parallel connection with the normally open follow-up switch K, the motor forms a series-connection with R and is connected between the positive electrode and the negative electrode of the output terminal of the automatic control circuit A,. The device achieves accurate positioning and eliminates the impact from harmful inertia.
Description
Technical field
The motor that the utility model relates to a kind of motor valve noninertia impact stops positioner immediately.Be applicable to the logical/resistance control of motor valve, as the motor valve that adopts in the IC-card gas meter, flow meter.
Background technology
At present, conventional motor valve electronic position-fixing device is made up of automatic control circuit, motor, eccentric wheel, decelerator, normally closed type switch, motor drives eccentric wheel by decelerator, alignment pin on the eccentric wheel is positioned on the extended line of its major axis and nearly AnchorPoint one side, the break-make of automatic control circuit control motor power, motor be connected between the positive and negative electrode of automatic control circuit output after the normally closed type switch is connected.Its course of work is as follows: when need close valve, the running of automatic control circuit actuating motor, when the valve rod of valve was withstood in the side of eccentric greatest radius point, alignment pin was pushed the normally closed type switch simultaneously aside and is cut off motor power, motor stops operating, and eccentric wheel also stops operating.But since action of inertia, the power supply though motor has been broken, and it must not stop operating immediately, it will inevitably be rotated further down against inertia, up to inertia energy being exhausted just stall, thereby correct pass valve position is misplaced, cause leakage (gas or liquid) consequence.For this reason, people's revised law commonly used is done some and is remedied: promptly work as eccentric greatest radius and will withstand before the valve mandril, the power supply of early cut-off motor, allow motor be rotated further by inertia, consumed Deng forwarding " inertia energy " to, the motor stall, the eccentric wheel stall, at this moment the side of eccentric greatest radius point just in time forwards and withstands the push rod of valve to.Yet it is in advance how long suitable, be difficult to estimate, because of the each the moment of inertia of the influence that is subjected to various random parameters (as the variation of the variation of voltage height, flexibility that motor rotates, the variation of motor speed, and the degree of lubrication of each relevant rotation system etc.) be at random rather than constant.
Summary of the invention
The motor that technical problem to be solved in the utility model provides a kind of motor valve noninertia impact stops positioner immediately.
The technical scheme that its technical problem that solves the utility model adopts is: it includes automatic control circuit A, motor, eccentric wheel, decelerator, motor drives eccentric wheel by decelerator, alignment pin on the eccentric wheel is positioned on the extended line of its major axis and nearly AnchorPoint one side, the break-make of automatic control circuit A control motor power, it is characterized in that it also includes follow-up switch K open in usual and current-limiting resistance R, motor with after follow-up switch K open in usual is in parallel again and the R series connection between the positive and negative electrode of automatic control circuit A output.
The beneficial effects of the utility model are that it can realize both having located accurately, have eliminated the impact of harmful inertia again, have prolonged the useful life of plant equipment greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
By embodiment shown in Figure 1 as can be known, it includes automatic control circuit A, motor 1, eccentric wheel 4, decelerator 2, motor 1 drives eccentric wheel 4 by decelerator 2, alignment pin 3 on the eccentric wheel 4 is positioned on the extended line of its major axis and nearly AnchorPoint one side, the break-make of automatic control circuit A control motor 2 power supplys, it is characterized in that it also includes follow-up switch K open in usual and current-limiting resistance R, motor with after follow-up switch K open in usual is in parallel again and the R series connection between the positive and negative electrode of automatic control circuit A output.
The course of work of present embodiment is as follows:
When the greatest radius point of eccentric wheel 4 forwards the push rod 5 that just in time withstands valve to, alignment pin 3 is stirred and follow-up switch K open in usual is connected, this moment, motor M was become " inertia " generator of an output short-circuit by short circuit, according to Lenz's law---" generator " produced powerful electric current (because of the generator output short-circuit) and can make motor M stall immediately at this moment, reaches the purpose of eliminating inertia.Motor is during by short circuit, though make the current supply circuit electric current that bigger increase be arranged, the time is very short, is unlikely to R (current-limiting resistance) is burnt out, because less than the time in a second, automatic control circuit A can automatically stop the power supply to motor M after short-circuit condition took place.
Claims (1)
1, the motor that a kind of motor valve noninertia impacts stops positioner immediately, it includes automatic control circuit A, motor (1), eccentric wheel (4), decelerator (2), motor (1) drives eccentric wheel (4) by decelerator (2), alignment pin (3) on the eccentric wheel (4) is positioned on the extended line of its major axis and nearly AnchorPoint one side, the break-make of automatic control circuit A control motor (2) power supply, it is characterized in that it also includes follow-up switch K open in usual and current-limiting resistance R, motor with after follow-up switch K open in usual is in parallel again with the R series connection at automatic control circuit A output just, between the negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233336 CN2498793Y (en) | 2001-08-14 | 2001-08-14 | Positioner for immediately stopping motor without inertia shock of motor valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233336 CN2498793Y (en) | 2001-08-14 | 2001-08-14 | Positioner for immediately stopping motor without inertia shock of motor valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2498793Y true CN2498793Y (en) | 2002-07-03 |
Family
ID=33647198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233336 Expired - Fee Related CN2498793Y (en) | 2001-08-14 | 2001-08-14 | Positioner for immediately stopping motor without inertia shock of motor valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2498793Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629430A (en) * | 2013-12-07 | 2014-03-12 | 四川海力智能科技有限公司 | Motor valve |
-
2001
- 2001-08-14 CN CN 01233336 patent/CN2498793Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629430A (en) * | 2013-12-07 | 2014-03-12 | 四川海力智能科技有限公司 | Motor valve |
| CN103629430B (en) * | 2013-12-07 | 2016-01-20 | 四川海力智能科技有限公司 | motor valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |