CN203384460U - Separator water storage tank water delivery regulating valve control system of direct current unit - Google Patents
Separator water storage tank water delivery regulating valve control system of direct current unit Download PDFInfo
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- CN203384460U CN203384460U CN201320475899.3U CN201320475899U CN203384460U CN 203384460 U CN203384460 U CN 203384460U CN 201320475899 U CN201320475899 U CN 201320475899U CN 203384460 U CN203384460 U CN 203384460U
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- storage tank
- control system
- water storage
- valve
- water delivery
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Abstract
The utility model provides a separator water storage tank water delivery regulating valve control system of a direct current unit. The separator water storage tank water delivery regulating valve control system comprises a filter pressure regulator, a locator, Post proportional amplifiers, an upper air cylinder and a lower air cylinder, wherein one end of the filter pressure regulator is connected with a switch control air source, and the other end is directly communicated with the locator which is directly communicated with the Post proportional amplifiers. According to the separator water storage tank water delivery regulating valve control system of the direct current unit, a rapidly-closing electromagnetic valve, a lock up electromagnetic valve, an air lock valve and four three-way pneumatic valves in a control loop are eliminated, multiple failure points which easily cause abnormalities of the movement of a valve are reduced, and the mechanism can achieve stable and continuous opening and closing regulation through the locator.
Description
Technical field
The utility model relates to field of mechanical technique, refers to especially a kind of DC generator group separator water storage tank water delivery modulating valve control system.
Background technique
The Present Domestic thermal power generation is very important generation mode always, and separator water storage tank drain regulating valve is the indispensable equipment in thermal power generation field.The Main Function of existing separator water storage tank drain regulating valve is to regulate the water level of water storage tank when the boiler startup initial stage, so that water level changes in allowed band, and guarantees that the confluent that boiler feed pump provides is no less than the minimum discharge of protecting burner hearth.
The control system of existing separator water storage tank drain regulating valve as shown in Figure 1, comprise four threeway pneumatic valve D1～D4, air lock AL, intelligent positioner P, quick closing valve solenoid valve EV1, protect position solenoid valve EV2, two pneumatic proportional amplifier VB1, VB2, positioning work piece DW, pressure switch PS, filter regulator AFR.Switch is controlled source of the gas by the special proportional amplifier in positioning work piece DW → Persian → threeway pneumatic valve D1/D3 → threeway pneumatic valve D2/D4 → upper and lower cylinder BP.Therefore in the control system of this structure, the special proportional amplifier in positioning work piece and Persian is necessary.And in former control loop, D1-D4 and EV1/EV2/ only just work when unusual service condition, from long-term operating conditions, the configuration of above-mentioned control loop, particularly the configuration of threeway pneumatic valve D1～D4 and quick closing valve solenoid valve EV1, guarantor position solenoid valve EV2 causes failsafe valve frequent, and the normal regulating function of valve has been subject to impact.
The control system structure of this structure is very complicated, element is various, and control components and parts wherein are all the equipment that accurate many gas circuits are controlled, and so just causes having relatively high expectations to controlling source of the gas quality (oil, water, impurity equal size).When source of the gas does not reach while requiring, bite phenomenon, cisco unity malfunction very easily appear in above-mentioned components and parts.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of equipment reliability that improves to reduce the DC generator group separator water storage tank water delivery modulating valve control system of accident rate.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of DC generator group separator water storage tank water delivery modulating valve control system, comprise filter regulator AFR, positioning work piece DW, the special proportional amplifier in Persian, upper and lower cylinder BP, wherein said filter regulator AFR mono-end connecting valve is controlled source of the gas, the other end directly with described positioning work piece DW conducting, and described positioning work piece DW directly with the special proportional amplifier conducting in described Persian.
As technique scheme preferably, the special proportional amplifier in described Persian comprises two pneumatic proportional amplifier VB1, VB2 parallel with one another.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, cancel the quick closing valve solenoid valve EV1 in the control loop and protected position solenoid valve EV2, air lock AL, threeway pneumatic valve D1～D4, so not only reduced many fault points of easily causing valve event abnormal, and made this mechanism stablize and continuous to carry out the switch adjusting by positioning work piece.
The accompanying drawing explanation
The logical schematic that Fig. 1 is existing DC generator group separator water storage tank water delivery modulating valve control system;
The logical schematic of the DC generator group separator water storage tank water delivery modulating valve control system that Fig. 2 is the utility model embodiment.
Embodiment
For making the technical problems to be solved in the utility model, technological scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiment of the present utility model provides a kind of DC generator group separator water storage tank water delivery modulating valve control system, its structure as shown in Figure 2, comprise filter regulator AFR, positioning work piece DW, the special proportional amplifier in Persian, upper and lower cylinder BP, wherein said filter regulator AFR mono-end connecting valve is controlled source of the gas, the other end directly with described positioning work piece DW conducting, and described positioning work piece DW directly with the special proportional amplifier conducting in described Persian.Wherein, as shown in Figure 2, the special proportional amplifier in described Persian comprises two pneumatic proportional amplifier VB1, VB2 parallel with one another.
When existing system is transformed, at first should close this DC generator group separator water storage tank water delivery modulating valve, then close quick closing valve solenoid valve EV1 and protect the power supply of solenoid valve EV2, then the connecting pipeline of four threeway pneumatic valve D1～D4 is removed, and by the valve core taking of four threeway pneumatic valve D1～D4.Then by processing plug shutoff for the relief opening of the outlet of the former oil-gas hole on threeway pneumatic valve D2, D4 and quick closing valve source of the gas and threeway pneumatic valve D1 and threeway pneumatic valve D3.
The utility model compared with prior art, cancel the quick closing valve solenoid valve EV1 in the control loop and protected position solenoid valve EV2, air lock AL, threeway pneumatic valve D1～D4, so not only reduced many fault points of easily causing valve event abnormal, and made this mechanism stablize and continuous to carry out the switch adjusting by positioning work piece.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. a DC generator group separator water storage tank water delivery modulating valve control system, it is characterized in that, comprise filter regulator, positioning work piece, the special proportional amplifier in Persian, upper and lower cylinder, wherein said filter regulator one end connecting valve is controlled source of the gas, the other end directly with described positioning work piece conducting, and described positioning work piece directly with the special proportional amplifier conducting in described Persian.
2. DC generator group separator water storage tank water delivery modulating valve control system according to claim 1, is characterized in that, the special proportional amplifier in described Persian comprises two pneumatic proportional amplifiers parallel with one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475899.3U CN203384460U (en) | 2013-08-05 | 2013-08-05 | Separator water storage tank water delivery regulating valve control system of direct current unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475899.3U CN203384460U (en) | 2013-08-05 | 2013-08-05 | Separator water storage tank water delivery regulating valve control system of direct current unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384460U true CN203384460U (en) | 2014-01-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320475899.3U Expired - Fee Related CN203384460U (en) | 2013-08-05 | 2013-08-05 | Separator water storage tank water delivery regulating valve control system of direct current unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753587A (en) * | 2016-12-23 | 2017-05-31 | 安徽六国化工股份有限公司 | A kind of mistake gas shielded gas circuit of gasification furnace inlet regulating valve |
-
2013
- 2013-08-05 CN CN201320475899.3U patent/CN203384460U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753587A (en) * | 2016-12-23 | 2017-05-31 | 安徽六国化工股份有限公司 | A kind of mistake gas shielded gas circuit of gasification furnace inlet regulating valve |
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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 |
Granted publication date: 20140108 Termination date: 20150805 |
|
| EXPY | Termination of patent right or utility model |