CN201884729U - Automatic piloted pressure release controller - Google Patents
Automatic piloted pressure release controller Download PDFInfo
- Publication number
- CN201884729U CN201884729U CN201020675136XU CN201020675136U CN201884729U CN 201884729 U CN201884729 U CN 201884729U CN 201020675136X U CN201020675136X U CN 201020675136XU CN 201020675136 U CN201020675136 U CN 201020675136U CN 201884729 U CN201884729 U CN 201884729U
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- Prior art keywords
- valve
- main valve
- pilot valve
- controller
- signal end
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- Expired - Lifetime
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Abstract
The utility model relates to an automatic piloted pressure release controller, which comprises a main valve and a pilot valve, wherein an inlet of the pilot valve is communicated with an inlet of the main valve; and an outlet of the pilot valve is communicated with a piston cavity of the main valve. The automatic piloted pressure release controller is characterized in that a normally-opened solenoid valve and an electric contact pressure gauge are arranged on a connected pipeline between the inlet of the pilot valve and the inlet of the main valve; a bypass pipeline is arranged on a connecting pipeline between the outlet of the pilot valve and the piston cavity of the main valve; a normally-closed solenoid valve is arranged on the bypass pipeline; the voltages of coils of the normally-opened solenoid valve and the normally-closed solenoid valve are controlled by an output signal end of the controller; and the output signal end of the electric contact pressure gauge is connected with an input control signal end of the controller. When a system on the side of the inlet of the main valve is in a negative pressure state, the main valve can be reliably closed and medium can be prevented from back flowing; and in addition, the pressure safety of the system can be controlled in the state that the pilot valve has failure. The automatic piloted pressure release controller is suitable for safety protecting devices of various pressure container devices.
Description
Technical field
The utility model relates to safety valve, particularly about a kind of leading type releasing pressure automatically controller.
Background technique
Present leading type releasing pressure automatically controller mainly is made up of main valve and pilot valve, and the import of pilot valve is communicated with the import of main valve, and the outlet of pilot valve is communicated with the piston cavity of main valve, and medium is by the import of pilot valve, the piston cavity that outlet enters main valve.When system pressure was elevated to the valve Set pressure, pilot valve was opened, and the medium in the main valve piston chamber is discharged by the pilot valve floss hole, main valve suction side pressure medium backs down flap, system media pressure is discharged to outlet from the main valve import, reduce system media pressure, maintaining system safety.Its major defect is: when negative pressure state occurring in the system of main valve suction side, this negative pressure will enter the piston cavity of main valve through pilot valve, make the piston cavity of main valve be in negative pressure state, cause that main valve outlet medium flows backwards, and damages system equipment; In addition, under the malfunctioning situation of pilot valve, main valve will lose the safety protection effect to system, and functional reliability is poor.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provide a kind of when negative pressure state appears in the main valve inlet system main valve can reliably close, prevent that medium from flowing backwards, and leading type releasing pressure automatically controller that also can the control system pressure security under the malfunctioning state of pilot valve.
The technical solution of the utility model comprises main valve and pilot valve, and pilot valve adopts the spring Direct loaded safety valve, and the import of pilot valve is communicated with the import of main valve, and the outlet of pilot valve is communicated with the piston cavity of main valve.Mainly be on the connecting tube between pilot valve import and the main valve import, normally open solenoid valve and pressure gauge with electric contact to be installed; On the connecting tube between pilot valve outlet and the main valve piston chamber, by-pass line is installed, on this by-pass line, normally closed solenoid valve is installed; The coil voltage of described normally open solenoid valve and normally closed solenoid valve is by the output signal end control of controller; The output signal end of described pressure gauge with electric contact is connected with the input control signal end of controller.
In above technological scheme, the upper-lower position switch is installed on the pilot valve, the switching signal end of upper-lower position switch is connected with the input signal end of controller.
The utility model beneficial effect compared with prior art is: normally open solenoid valve, normally closed solenoid valve and pressure gauge with electric contact are installed on the connecting tube between main valve and the pilot valve, normally open solenoid valve, normally closed solenoid valve can pass through controller Control work state by the signal of pressure gauge with electric contact, when negative pressure state appears in main valve suction side system, can reliably close main valve, prevent that medium from flowing backwards, and also can the control system pressure security under the malfunctioning state of pilot valve.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Leading type releasing pressure automatically controller as shown in Figure 1 comprises main valve 1 and pilot valve 3, and pilot valve 3 adopts the spring Direct loaded safety valve, and the import of pilot valve 3 is communicated with the import of main valve 1, and the outlet of pilot valve 3 is communicated with the piston cavity of main valve 1.On the connecting tube between pilot valve 3 imports and main valve 1 import, normally open solenoid valve 6 and pressure gauge with electric contact 7 are installed, on the connecting tube between pilot valve 3 outlet and main valve 1 piston cavity, are connected by-pass line, installation normally closed solenoid valve 2 on this by-pass line.The coil voltage of described normally open solenoid valve 6 and normally closed solenoid valve 2 is by the output signal end control of controller 5, and the output signal end of pressure gauge with electric contact 7 is connected with the input control signal end of controller 5.When negative pressure state appears in main valve 1 suction side system, pressure gauge with electric contact 7 sends signal to controller 5, controller 5 transmits a signal to normally open solenoid valve 6 and normally closed solenoid valve 2, make normally open solenoid valve 6 and normally closed solenoid valve 2 get electronic work, the piston cavity of main valve 1 is communicated with atmosphere through normally closed solenoid valve 2, make main valve 1 flap top pressure greater than below pressure, main valve 1 is reliably closed, and prevents that medium from flowing backwards.When main valve 1 suction side pressure surpasses Set pressure under the malfunctioning state of pilot valve 3 appearance, pressure gauge with electric contact 7 sends signal to controller 5, controller 5 transmits a signal to normally open solenoid valve 6 and normally closed solenoid valve 2, make normally open solenoid valve 6 and normally closed solenoid valve 2 get electronic work, the piston cavity of main valve 1 is communicated with atmosphere through normally closed solenoid valve 2, and main valve 1 suction side pressure is washed flap open to the outlet side relieving pressure.When the utility model uses as bypass valve, can get electronic work by manual control normally open solenoid valve 6 and normally closed solenoid valve 2, main valve 1 is opened.
The upper-lower position switch is installed on the pilot valve 3, and the switching signal end of upper-lower position switch is connected with the input signal end of controller 5 by lead 4, with the switch state signal input controller 5 of pilot valve 3, realizes the on off state monitoring.
Claims (2)
1. a leading type releasing pressure automatically controller comprises main valve (1) and pilot valve (3), and pilot valve (3) adopts the spring Direct loaded safety valve, and the import of pilot valve (3) is communicated with the import of main valve (1), and the outlet of pilot valve (3) is communicated with the piston cavity of main valve (1); It is characterized in that on the connecting tube between pilot valve (3) import and main valve (1) import, normally open solenoid valve (6) and pressure gauge with electric contact (7) being installed; On the connecting tube between pilot valve (3) outlet and main valve (1) piston cavity, be connected a by-pass line, normally closed solenoid valve (2) is installed on this by-pass line; The coil voltage of described normally open solenoid valve (6) and normally closed solenoid valve (2) is by the output signal end control of controller (5); The output signal end of described pressure gauge with electric contact (7) is connected with the input control signal end of controller (5).
2. leading type releasing pressure automatically controller according to claim 1 is characterized in that on the pilot valve (3) the upper-lower position switch being installed, and the switching signal end of upper-lower position switch is connected with the input signal end of controller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020675136XU CN201884729U (en) | 2010-12-13 | 2010-12-13 | Automatic piloted pressure release controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020675136XU CN201884729U (en) | 2010-12-13 | 2010-12-13 | Automatic piloted pressure release controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884729U true CN201884729U (en) | 2011-06-29 |
Family
ID=44182273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020675136XU Expired - Lifetime CN201884729U (en) | 2010-12-13 | 2010-12-13 | Automatic piloted pressure release controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561601A (en) * | 2020-05-08 | 2020-08-21 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
-
2010
- 2010-12-13 CN CN201020675136XU patent/CN201884729U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561601A (en) * | 2020-05-08 | 2020-08-21 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
| CN111561601B (en) * | 2020-05-08 | 2022-04-01 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |