CN213121096U - Device convenient to carry out valve activity test - Google Patents
Device convenient to carry out valve activity test Download PDFInfo
- Publication number
- CN213121096U CN213121096U CN202021391273.0U CN202021391273U CN213121096U CN 213121096 U CN213121096 U CN 213121096U CN 202021391273 U CN202021391273 U CN 202021391273U CN 213121096 U CN213121096 U CN 213121096U
- Authority
- CN
- China
- Prior art keywords
- air source
- source pipe
- valve
- test
- air
- 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.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model relates to a device convenient for valve activity test, which comprises a cylinder, a gas source pipe, a steam extraction check valve, a control solenoid valve, a test solenoid valve and a DCS system; the air source pipe comprises an air source pipe I and an air source pipe II, the air source pipe I is connected with the air cylinder, one end of the air source pipe II is upwards led out from the left side of the air source pipe I, and the other end of the air source pipe II is connected to the steam extraction check valve on the air cylinder; the control electromagnetic valve is arranged in the middle of the air source pipe I, and the test electromagnetic valve is arranged on the air source pipe II. The utility model adds a new air source pipeline on the basis of not changing the original pipeline design, thereby not causing resource waste and increasing the workload of reconstruction; through set up orifice and test solenoid valve on new air supply pipeline, the stroke that the activity was closed to the control valve in a flexible way to coordinate cooperation between the two, the DCS system realizes remote control to test solenoid valve for the operation personnel can remote control carry out the steam turbine extraction check valve and should close the activity test regularly.
Description
Technical Field
The utility model relates to a thermal power station turbo generator set field, concretely relates to device convenient to carry out valve activity test.
Background
The steam extraction check valve is mainly applied to an industrial pipeline system with steam or water as a medium of a high-exhaust steam extraction pipeline and each section of steam extraction pipeline of a steam turbine of a thermal power station, the pressure in the steam turbine is prevented from being suddenly reduced when the steam turbine unit suddenly loses load, steam in a steam extraction pipe and each heater flows back to enter the steam turbine to cause turbine blades to be broken, vicious accidents of a steam turbine generator are destroyed, water hammer accidents caused by water entering the steam turbine from the steam extraction pipeline due to pipeline leakage of the heater system are prevented, and the safe operation of the steam turbine is protected.
According to the requirements of a supervision guide rule of a steam turbine of a generator, a steam extraction check valve of the steam turbine needs to be periodically subjected to a closing movement test, and the conventional method for the movement test of the steam extraction check valve is to arrange a manual movement test block on a pneumatic actuating mechanism and need a tester to perform the movement test on site.
Disclosure of Invention
In order to alleviate staff's work task for the operation personnel can also close the test to steam turbine extraction check valve at remote, can improve experimental effect simultaneously, the utility model provides a device convenient to carry on valve activity test.
The utility model adopts the following technical scheme: a device convenient for valve activity test comprises a cylinder, a gas source pipe, a steam extraction check valve, a control electromagnetic valve, a test electromagnetic valve and a DCS system; the air source pipe comprises an air source pipe I and an air source pipe II, the air source pipe I is connected with the air cylinder, one end of the air source pipe II is upwards led out from the left side of the air source pipe I, and the other end of the air source pipe II is connected to the steam extraction check valve on the air cylinder; the control electromagnetic valve is arranged in the middle of the air source pipe I, and the test electromagnetic valve is arranged on the air source pipe II.
Furthermore, the steam extraction check valve adopts an air-open type pneumatic actuating mechanism.
Furthermore, a throttling hole is further formed in the air source pipe II and is arranged between the test electromagnetic valve and the steam extraction check valve.
Furthermore, the test electromagnetic valve is a three-way electromagnetic valve, the other end of the test electromagnetic valve is connected to the DCS system through an interface, and the DCS system remotely controls the switch of the test electromagnetic valve.
Further, the control signal of the DCS system is set to be a 1-second pulse signal.
Furthermore, the live time of the test electromagnetic valve can be adjusted, and the travel of the closing movement of the steam extraction check valve is controlled by cooperation with the size of the throttling hole.
Further, the valve open position feedback of the steam extraction check valve disappears within 2 seconds after the test electromagnetic valve instruction is sent, and then the valve activity test is judged to be successful, otherwise, the valve activity test is judged to be failed.
Compared with the prior art, the utility model discloses the beneficial effect who gains is:
1. a new air source pipeline is added on the basis of not changing the original pipeline design, so that resource waste is avoided, and the workload of reconstruction is not increased;
2. through set up orifice and test solenoid valve on new air supply pipeline, the stroke that the activity was closed to the control valve in a flexible way to coordinate cooperation between the two, the DCS system realizes remote control to test solenoid valve for the operation personnel can remote control carry out the steam turbine extraction check valve and should close the activity test regularly.
Drawings
FIG. 1 is a schematic diagram of an apparatus for facilitating valve activity testing;
corresponding reference characters indicate:
1. the device comprises a cylinder, a 2-steam extraction check valve, 3-gas source pipes I, 4-gas source pipes II, 5-control electromagnetic valves, 6-test electromagnetic valves, 7-DCS system and 8-throttling holes.
Detailed description of the invention
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings, and it should be noted that, the terms indicating the positions or the orientation relationships, such as "upper", "lower", "left", "right", etc., are only indicated for the positions or the orientation relationships shown in the drawings, and are not restrictive descriptions of the present invention.
With reference to the attached drawing 1, the utility model relates to a device convenient for valve activity test, which comprises a cylinder 1, a gas source pipe, a steam extraction check valve 2, a control electromagnetic valve 5, a test electromagnetic valve 6 and a DCS system 7; the air source pipe comprises an air source pipe I3 and an air source pipe II 4, the left side of the air source pipe I3 is connected with the air cylinder 1, one end of the air source pipe II 4 is upwards led out from the left side of the air source pipe I, and the other end of the air source pipe II is connected to the steam extraction check valve 2 on the air cylinder 1; the control electromagnetic valve 5 is arranged in the middle of the air source pipe I3, and the test electromagnetic valve 6 is arranged on the air source pipe II 4.
In a preferred but not limiting embodiment of the invention, the extraction check valve 2 is an air-operated pneumatic actuator.
In a preferred but nonlimiting embodiment of the present invention, a throttle hole 8 is further provided on the air source pipe ii 4, the throttle hole 8 is provided between the test solenoid valve 6 and the steam extraction check valve 2.
The utility model discloses a preferred but not restrictive embodiment, experimental solenoid valve 6 is three solenoid valve, other end interface connection to DCS system 7, by DCS system 7 remote control experimental solenoid valve 6 switch.
In a preferred, but non-limiting embodiment of the invention, the control signal of the DCS system 6 is set to a 1 second pulse signal.
In a preferred but not limiting embodiment of the present invention, the time of the test solenoid valve 6 is adjustable to match the size of the orifice 8, and the stroke of the valve closing movement of the steam extraction check valve 2 is controlled in cooperation with the operation.
When the activity test is closed to the check valve 2 valve of drawing gas as needs carry out, open through DCS system remote control test solenoid valve 6 is electrified, at this moment, get into the compressed air of cylinder 1 downside and get into cylinder 1 upside simultaneously, the effect of the spring force of cylinder 1 upside makes the check valve 2 of drawing gas close the activity and begin. The length of the live time of the test electromagnetic valve 6 and the size of the throttling hole 8 are matched together to cooperatively control the stroke of the closing movement of the valve of the steam extraction check valve 2, and the live time of the test electromagnetic valve 5 can be flexibly adjusted according to actual requirements. Meanwhile, when the feedback of the valve opening position of the steam extraction check valve disappears within 2 seconds after the instruction of the test electromagnetic valve 6 is sent out, the valve activity test is judged to be successful, and otherwise, the valve activity test is judged to be failed.
In the above description, it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A device convenient for valve activity test is characterized by comprising an air cylinder, an air source pipe, a steam extraction check valve, a control electromagnetic valve, a test electromagnetic valve and a DCS system; the air source pipe comprises an air source pipe I and an air source pipe II, the air source pipe I is connected to the left side of the air cylinder, one end of the air source pipe II is led out upwards from the left side of the air source pipe I, and the other end of the air source pipe II is connected to the steam extraction check valve on the air cylinder; the control electromagnetic valve is arranged in the middle of the air source pipe I, and the test electromagnetic valve is arranged on the air source pipe II.
2. The device for facilitating the valve activity test is characterized in that a throttling hole is further formed in the air source pipe II, and the throttling hole is arranged between the test electromagnetic valve and the steam extraction check valve.
3. The apparatus for facilitating valve movement testing of claim 1, wherein the extraction check valve is a pneumatically actuated actuator.
4. The device for facilitating the valve activity test of claim 1, wherein the test solenoid valve is a three-way solenoid valve, and the other end of the test solenoid valve is connected to a DCS system through an interface, and the DCS system remotely controls the switch of the test solenoid valve.
5. The apparatus of claim 1, wherein the control signal of the DCS system is set to a 1 second pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021391273.0U CN213121096U (en) | 2020-07-15 | 2020-07-15 | Device convenient to carry out valve activity test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021391273.0U CN213121096U (en) | 2020-07-15 | 2020-07-15 | Device convenient to carry out valve activity test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213121096U true CN213121096U (en) | 2021-05-04 |
Family
ID=75678707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021391273.0U Active CN213121096U (en) | 2020-07-15 | 2020-07-15 | Device convenient to carry out valve activity test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213121096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235381A (en) * | 2021-12-10 | 2022-03-25 | 国电长源汉川第一发电有限公司 | Automatic test control circuit for steam extraction check valve of steam turbine |
-
2020
- 2020-07-15 CN CN202021391273.0U patent/CN213121096U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235381A (en) * | 2021-12-10 | 2022-03-25 | 国电长源汉川第一发电有限公司 | Automatic test control circuit for steam extraction check valve of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213121096U (en) | Device convenient to carry out valve activity test | |
| CN200949439Y (en) | Oil pipe hanger device with cut-off valve | |
| CN104122092A (en) | Exhaust process simulator of safety valve on rocket | |
| CN105547682B (en) | Fuel tank positive/negative-pressure durability test tooling | |
| CN201747396U (en) | Coal mine underground pneumatic air-door locking control device | |
| CN100348900C (en) | Fast explosive and hydraulic actuating device of valve | |
| CN201982702U (en) | Pipeline stop valve | |
| CN210118488U (en) | Electromagnetic valve for air exhaust check valve activity test | |
| CN205405204U (en) | A pipe network pressure alarm system that descends fast for natural gas long -distance transport pipe | |
| CN213749072U (en) | Main valve partial stroke activity test system based on throttling mode | |
| CN204062134U (en) | The structure of cooling water control water-curtain valve | |
| CN203965262U (en) | Test tool | |
| CN203348663U (en) | Electromagnetic self-closing valve | |
| CN203404475U (en) | Stop valve and reversing device and pressure adjusting system which use stop valve | |
| CN221525702U (en) | Double-exhaust electromagnetic valve for steam extraction check valve activity test | |
| CN204114300U (en) | A kind of venting gas appliance of mist eliminator flushing water valve | |
| CN201124583Y (en) | Pneumatic control device for manipulator of mechanical press | |
| CN103112597B (en) | Transmission rod hidden type steam catapulting system and catapulting control method thereof | |
| CN208968823U (en) | Pneumatic actuator fatigue test device | |
| CN220435569U (en) | Pilot-operated electromagnetic valve | |
| CN203571083U (en) | Electromagnetic-hydraulic drive slow-closure type brake valve with feedback signal | |
| CN220467362U (en) | Remote control derrick lifting system for petroleum drilling and repairing machine | |
| CN2083052U (en) | Switching unit of air supply system | |
| CN201836510U (en) | Normally open pneumatic diaphragm actuator of valve | |
| CN217328470U (en) | Saturated steam valve capable of being quickly closed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |