CN202674478U - Inner feedback self-operated micro pressure regulating valve - Google Patents
Inner feedback self-operated micro pressure regulating valve Download PDFInfo
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- CN202674478U CN202674478U CN 201220229953 CN201220229953U CN202674478U CN 202674478 U CN202674478 U CN 202674478U CN 201220229953 CN201220229953 CN 201220229953 CN 201220229953 U CN201220229953 U CN 201220229953U CN 202674478 U CN202674478 U CN 202674478U
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- valve
- valve body
- impulse
- actuator
- spare
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Abstract
An inner feedback self-operated micro pressure regulating valve is disclosed and belongs to the technology field of a self-operated micro pressure regulating valve. The inner feedback self-operated micro pressure regulating valve comprises a valve body, a valve cover which is fixed with the valve body, and an execution mechanism which is fixedly arranged on the valve cover, wherein a valve rod is arranged in the valve cover in a penetrating way; a top part of the valve rod is connected with the execution mechanism; a valve core is fixedly arranged at the bottom part of the valve rod; the valve core can be connected with a valve seat arranged in the valve body in a matched way; the valve body, the valve cover, and the lower membrane chamber of the execution mechanism are communicated with one another. The inner feedback self-operated micro pressure regulating valve is advantaged by reduced medium leakage points, prevented medium leakage of the pressure taking point and the pressure guiding point, cancel of the pressure guiding tube, enlarged pressure guiding space, and elimination of the phenomenon that the pressure can not be guided to the execution mechanism because obstruction is resulted from the great viscosity of the medium.
Description
Technical field
The utility model belongs to the operated micropressure adjusting valve technical field, is specifically related to a kind of operated micropressure adjusting valve of internal feedback.
Background technique
In recent years, domestic valve industry develop rapidly, the product structure type of each valve producer emerges in an endless stream.But domestic existing operated micropressure adjusting valve adopts PRESSURE PIPE that medium in the valve body is introduced actuator film chamber, and the shortcoming of this outer pressure taking structure is: PRESSURE PIPE is easily stopped up, and the larger medium of viscosity especially is such as oil product class medium.In addition, when adopting outer pressure taking structure, must PRESSURE PIPE one end is fixed on the valve body (or pipeline) by pressure tapping connector, the other end be fixed in the actuator, has increased the dielectric leakage point.Therefore, the operated micropressure adjusting valve medium of this structure easily leaks outside and pressure can't accurately be controlled, and affects the normal operation of industrial processes.
The model utility content
For the problem that prior art exists, the purpose of this utility model is to design the technological scheme of the operated micropressure adjusting valve that a kind of internal feedback is provided.
The operated micropressure adjusting valve of described a kind of internal feedback, the valve gap that comprises valve body, is fixedly installed with valve body and be fixedly installed on actuator on the valve gap, run through in the described valve gap valve rod is set, described valve rod top connects actuator, described stem bottom is fixedly installed spool, described spool can be arranged on valve body in valve seat cooperate, it is characterized in that the lower film chamber of described valve body, valve gap and actuator communicates.
The operated micropressure adjusting valve of described a kind of internal feedback is characterized in that described valve gap lower end arranges the medium channel that valve body is communicated with valve gap.
The operated micropressure adjusting valve of described a kind of internal feedback is characterized in that described medium channel is symmetrically arranged circular ring path.
The operated micropressure adjusting valve of described a kind of internal feedback is characterized in that on the described valve gap and between the lower membrane cover of actuator impulse spare being set, and the impulse spare medium channel that actuator is communicated with valve gap is set in the described impulse spare.
The operated micropressure adjusting valve of described a kind of internal feedback is characterized in that being equipped with between described impulse spare and the valve gap O RunddichtringO.
The operated micropressure adjusting valve of described a kind of internal feedback is characterized in that described impulse spare medium channel is symmetrically arranged circular ring path.
The operated micropressure adjusting valve of above-mentioned a kind of internal feedback, simple in structure, reasonable in design, the impulse spare that has medium channel by setting communicates valve body, valve gap and actuator, pressure medium can directly be introduced the lower film chamber of actuator in the valve body by valve gap, act on the diaphragm in the actuator and produce detent force.The utility model has reduced the dielectric leakage point, has avoided the medium of pressure point and impulse point to leak outside; Cancelled PRESSURE PIPE, enlarged the impulse space, thereby eradicated because dielectric viscosity produces obstruction greatly, pressure draws the phenomenon less than actuator.
Description of drawings
Fig. 1 is the utility model general assembly structural drawing;
Fig. 2 is the sectional view of valve gap in the utility model;
Fig. 3 is the plan view of valve gap in the utility model;
Fig. 4 is the sectional view of impulse spare in the utility model;
Fig. 5 is the plan view of impulse spare in the utility model.
Among the figure: membrane cover, 601-impulse spare, 601a-impulse spare medium channel, 7-diaphragm, 8-spring, 9-pressure adjustment disk, the upper membrane cover of 10-, 11-valve rod under 1-valve body, 2-valve seat, 3-spool, 4-valve gap, 401-medium channel, 5-O RunddichtringO, the 6-.
Embodiment
Further specify the utility model below in conjunction with Figure of description.
As shown in the figure, the valve gap 4 that a kind of operated micropressure adjusting valve of internal feedback comprises valve body 1, be fixedly installed with valve body 1 and be fixedly installed on actuator on the valve gap 4, run through in the valve gap 4 valve rod 11 is set, valve rod 11 tops connect actuator, valve rod 11 bottoms are fixedly installed spool 3, spool 3 can be arranged on valve body 1 in valve seat 2 cooperate.Actuator in the utility model comprises interconnective upper membrane cover 10 and lower membrane cover 6, be fixedly installed diaphragm 7 between upper membrane cover 10 and the lower membrane cover 6, the spring 8 elasticity Bonding pressure adjustment disks 9 of diaphragm 7 upper surfaces by arranging, diaphragm 7 lower surfaces are connected with valve rod 11.
In order to change the conventional outer pressure taking structure of existing operated micropressure adjusting valve, the lower film chamber of valve body 1, valve gap 4 and actuator is communicated, the medium channel 401 that valve body 1 is communicated with valve gap 4 specifically is set in valve gap 4 lower ends, and medium channel 401 is symmetrically arranged circular ring path; Between the lower membrane cover 6 of valve gap 4 upper ends and actuator impulse spare 601 is set, the impulse spare medium channel 601a that actuator is communicated with valve gap 4 is set in the impulse spare 601, impulse spare medium channel 601a preferred structure is symmetrically arranged circular ring path.The dielectric leakage point that adopted above-mentioned structure decrease has avoided the medium of pressure point and impulse point to leak outside; Cancelled PRESSURE PIPE, enlarged the impulse space, thereby eradicated because dielectric viscosity produces obstruction greatly, pressure draws the phenomenon less than actuator.
In order to guarantee the sealing between lower membrane cover 6 and the valve gap 4, between impulse spare 601 and valve gap 4, be equipped with O RunddichtringO 5.
When MEDIA FLOW through valve body 1, the position of spool 3 is that the free area between spool 3 and the valve seat 2 has determined rate-of flow, controlled upstream pressure (P2) through valve body 1, that valve gap 4 is sent to lower film is indoor, and act on the diaphragm 7, and convert detent force at this.According to spring 8 pretightening forces size, detent force is adjusted valve element position.Adjust the size of spring 8 pretightening forces by pressure adjustment disk 9.When upstream pressure during greater than the set point of spring 8 pretightening forces, Compress Spring, band movable valve plug 3 makes valve opening degree increase in proportion according to pressure variety.Be lower than set point when upstream pressure drops to, then because the reaction force that spring 8 produces is with movable valve plug 3, the valve closing degree reduced in proportion according to pressure variety, thereby reach the purpose of the front voltage stabilizing of valve.
Shown in the above and the figure only is preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. the operated micropressure adjusting valve of an internal feedback, the valve gap (4) that comprises valve body (1), is fixedly installed with valve body (1) and be fixedly installed on actuator on the valve gap (4), run through in the described valve gap (4) valve rod (11) is set, described valve rod (11) top connects actuator, described valve rod (11) bottom is fixedly installed spool (3), described spool (3) can be arranged on valve body (1) in valve seat (2) cooperate, it is characterized in that the lower film chamber of described valve body (1), valve gap (4) and actuator communicates.
2. the operated micropressure adjusting valve of a kind of internal feedback as claimed in claim 1 is characterized in that described valve gap (4) lower end arranges the medium channel (401) that valve body (1) is communicated with valve gap (4).
3. the operated micropressure adjusting valve of a kind of internal feedback as claimed in claim 2 is characterized in that described medium channel (401) is symmetrically arranged circular ring path.
4. the operated micropressure adjusting valve of a kind of internal feedback as claimed in claim 1, it is characterized in that on the described valve gap (4) and between the lower membrane cover (6) of actuator impulse spare (601) being set, the impulse spare medium channel (601a) that actuator is communicated with valve gap (4) is set in the described impulse spare (601).
5. the operated micropressure adjusting valve of a kind of internal feedback as claimed in claim 4 is characterized in that being equipped with O RunddichtringO (5) between described impulse spare (601) and the valve gap (4).
6. the operated micropressure adjusting valve of a kind of internal feedback as claimed in claim 4 is characterized in that described impulse spare medium channel (601a) is symmetrically arranged circular ring path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229953 CN202674478U (en) | 2012-05-22 | 2012-05-22 | Inner feedback self-operated micro pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229953 CN202674478U (en) | 2012-05-22 | 2012-05-22 | Inner feedback self-operated micro pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674478U true CN202674478U (en) | 2013-01-16 |
Family
ID=47495384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229953 Expired - Fee Related CN202674478U (en) | 2012-05-22 | 2012-05-22 | Inner feedback self-operated micro pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956001A (en) * | 2018-09-03 | 2018-12-07 | 中国石油天然气股份有限公司 | Pressure acquisition system |
-
2012
- 2012-05-22 CN CN 201220229953 patent/CN202674478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956001A (en) * | 2018-09-03 | 2018-12-07 | 中国石油天然气股份有限公司 | Pressure acquisition system |
| CN108956001B (en) * | 2018-09-03 | 2024-04-30 | 中国石油天然气股份有限公司 | Pressure acquisition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180522 |