CN215005597U - Current detection device for solenoid valve control loop - Google Patents
Current detection device for solenoid valve control loop Download PDFInfo
- Publication number
- CN215005597U CN215005597U CN202121350827.7U CN202121350827U CN215005597U CN 215005597 U CN215005597 U CN 215005597U CN 202121350827 U CN202121350827 U CN 202121350827U CN 215005597 U CN215005597 U CN 215005597U
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- relay
- control
- current monitoring
- solenoid valve
- electromagnetic valve
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Abstract
The utility model relates to a current detection device to solenoid valve control circuit. All important control valves of the gas turbine power plant are controlled by double electromagnetic valves, when the unit operates normally, the valves are normally opened, the double electromagnetic valves are normally electrified, any one electromagnetic valve is electrified, the valve cannot be quickly closed, and the quick closing can be protected only by the electromagnetic valve. A current detection device for a solenoid valve control loop, comprising: the air switch A is connected with the current monitoring relay A, the current monitoring relay A is connected with the control relay A (5), the control relay A is connected with the electromagnetic valve A (6), the air switch B is connected with the current monitoring relay B, the current monitoring relay B is connected with the control relay B (7), and the control relay B is connected with the electromagnetic valve B (8). The utility model discloses be applied to the thermoelectricity field.
Description
Technical Field
The utility model relates to a current detection device to solenoid valve control circuit.
Background
All important control valves of the gas turbine power plant are controlled by double electromagnetic valves, when the unit operates normally, the valves are normally opened, the double electromagnetic valves are normally electrified, any one electromagnetic valve is electrified, the valve cannot be quickly closed, and the quick closing can be protected only by the electromagnetic valve. The equipment thinking can effectively avoid the problem of valve misoperation caused by the fault or interruption of a single electromagnetic valve power supply loop, but in the operation of a unit, whether two electromagnetic valves are normally in a charged action state cannot be known, the power supply loop of one electromagnetic valve is lost, and operation and maintenance personnel cannot know and cannot know, so that when another electromagnetic valve fails, the valve is still closed quickly to cause the non-stop of the unit.
Disclosure of Invention
The utility model aims at providing a current detection device to solenoid valve control circuit has solved the drawback that current solenoid valve control circuit can't keep watch on.
The above purpose is realized by the following technical scheme:
a current detection device for a solenoid valve control loop, comprising: the air switch A is connected with the current monitoring relay A, the current monitoring relay A is connected with the control relay A, the control relay A is connected with the electromagnetic valve A, the air switch B is connected with the current monitoring relay B, the current monitoring relay B is connected with the control relay B, the control relay B is connected with the electromagnetic valve B, the air switch A, the current monitoring relay A, the control relay A and the electromagnetic valve A are in a series structure and form a control loop of the electromagnetic valve A, and the air switch B, the current monitoring relay B, the control relay B and the electromagnetic valve B are in a series structure and form a control loop of the electromagnetic valve B.
The current detection device for the solenoid valve control loop is characterized in that a current monitoring relay connected in series in the solenoid valve control loop is positioned above a lower port and a control relay, a series terminal is a power supply negative terminal, and a dry contact of the current monitoring relay is connected into a DI (direct current) clamping piece of a control system.
The current detection device for the control loop of the electromagnetic valve is characterized in that the control loop of the electromagnetic valve A is connected with the control loop of the electromagnetic valve B in parallel.
The utility model has the advantages that:
1. the utility model discloses service function is novel establishes ties it to the power supply circuit of solenoid valve in for in unit long-term service, whether the automated inspection solenoid valve control circuit is normal, if unusual lose the electricity then send the warning, remind fortune dimension personnel to disappear scarcely.
2. The utility model discloses a current monitoring relay monitors and reports to the police to the control circuit of solenoid valve, and the contrast is traditional periodic test has better feasibility and security.
3. The utility model discloses in control solenoid valve's power supply circuit, the cluster goes into current monitoring relay, and the position lies in end opening and control relay top, and the cluster goes into the terminal and chooses for use the power negative terminal in current monitoring relay dry contact inserts control system's DI fastener to do the suggestion of reporting to the police in the picture.
4. The utility model discloses when solenoid valve power supply circuit operation is normal, when the solenoid valve was normally electrified promptly, the power supply circuit current value was greater than current monitoring relay action value, and monitoring relay dry contact moves, and signal transmission 1 in the DCS, the picture demonstration is normal, and when solenoid valve power supply circuit was unusual, the current value was less than current monitoring relay's action value, and monitoring relay dry contact breaks off, and DCS signal transmission 0, the picture is reported to the police and is carried.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the device comprises current monitoring relays A and 2, current monitoring relays B and 3, air switches A and 4, air switches B and 5, control relays A and 6, electromagnetic valves A and 7, control relays B and 8 and electromagnetic valves B.
The specific implementation mode is as follows:
example 1:
a current detection device for a solenoid valve control loop, comprising: the air switch A is connected with the current monitoring relay A, the current monitoring relay A is connected with a control relay A5, the control relay A is connected with a solenoid valve A6, the air switch B is connected with the current monitoring relay B, the current monitoring relay B is connected with a control relay B7, the control relay B is connected with a solenoid valve B8, the air switch A, the current monitoring relay A, the control relay A and the solenoid valve A are in a series structure and form a control loop of the solenoid valve A, and the air switch B, the current monitoring relay B, the control relay B and the solenoid valve B are in a series structure and form a control loop of the solenoid valve B.
Example 2:
according to the current detection device for the solenoid valve control circuit in embodiment 1, the current monitoring relay connected in series in the solenoid valve control circuit is positioned above the lower port and the control relay, the series terminal is the negative terminal of the power supply, and the dry contact of the current monitoring relay is connected into the DI card of the control system.
Example 3:
according to the current detection device for the control circuit of the solenoid valve in accordance with embodiment 1 or 2, the control circuit of the solenoid valve a and the control circuit of the solenoid valve B are connected in parallel.
Claims (3)
1. A current detection device for a solenoid valve control loop, comprising: the current monitoring relay A, the current monitoring relay B, the air switch A and the air switch B are characterized in that: the air switch A is connected with the current monitoring relay A, the current monitoring relay A is connected with the control relay A, the control relay A is connected with the electromagnetic valve A, the air switch B is connected with the current monitoring relay B, the current monitoring relay B is connected with the control relay B, the control relay B is connected with the electromagnetic valve B, the air switch A, the current monitoring relay A, the control relay A and the electromagnetic valve A are in a series structure and form a control loop of the electromagnetic valve A, and the air switch B, the current monitoring relay B, the control relay B and the electromagnetic valve B are in a series structure and form a control loop of the electromagnetic valve B.
2. The current detection device for the control loop of the solenoid valve according to claim 1, wherein: the current monitoring relay connected in series in the solenoid valve control loop is positioned above the lower port and the control relay, the series terminal is the negative end of the power supply, and the dry contact of the current monitoring relay is connected into a DI clamping piece of the control system.
3. The current detection device for the control loop of the solenoid valve according to claim 1, wherein: the control loop of the electromagnetic valve A is connected with the control loop of the electromagnetic valve B in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121350827.7U CN215005597U (en) | 2021-06-18 | 2021-06-18 | Current detection device for solenoid valve control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121350827.7U CN215005597U (en) | 2021-06-18 | 2021-06-18 | Current detection device for solenoid valve control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215005597U true CN215005597U (en) | 2021-12-03 |
Family
ID=79128728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121350827.7U Expired - Fee Related CN215005597U (en) | 2021-06-18 | 2021-06-18 | Current detection device for solenoid valve control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215005597U (en) |
-
2021
- 2021-06-18 CN CN202121350827.7U patent/CN215005597U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |