CN218497378U - Novel emergency cut-off electromagnetic valve interlocking control loop - Google Patents
Novel emergency cut-off electromagnetic valve interlocking control loop Download PDFInfo
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- CN218497378U CN218497378U CN202222761350.2U CN202222761350U CN218497378U CN 218497378 U CN218497378 U CN 218497378U CN 202222761350 U CN202222761350 U CN 202222761350U CN 218497378 U CN218497378 U CN 218497378U
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Abstract
The utility model discloses a novel promptly cut off solenoid valve interlocking control circuit, include: the control circuit comprises a 220V AC control circuit and a 24V DC control circuit, wherein the 220V AC control circuit is electrically connected with the 24V DC control circuit through a rectification power supply, and outputs a 24V DC power supply to the 24V DC control circuit; and a 24V DC electromagnetic valve closing signal is output by receiving a 220V AC signal of a current induction switch of a fan power supply loop and a 24V DC signal of a combustible gas concentration alarm controller. The utility model discloses when having considered the fan and breaking down, the control demand of the emergency cut-off valve of cut-off control, the control circuit of design can realize when the fan trouble, cuts off the requirement of emergency cut-off valve fast, has important production practice and realistic meaning.
Description
Technical Field
The utility model relates to an emergency cut-off solenoid valve control technical field, especially automatic cut valve when the fan outage promptly cut off solenoid valve control circuit.
Background
At present, the whole factory engineering of medium and large-sized automobiles is provided with related product centers for hydrogen energy research and development and trial production, the hydrogen-related environment in the automobile industry is increased day by day, and the corresponding control and linkage requirements are more and more complicated.
The interlocking control logic of the emergency cut-off solenoid valve in the traditional hydrogen-related environment is single, only the most basic requirements of the specification are met, after the detected hydrogen concentration reaches a certain degree, an output signal interlocks to close the emergency cut-off valve for conveying the hydrogen, and the control requirement of correspondingly cutting off the emergency cut-off valve when the fan which is one of important devices for reducing the concentration of combustible gas in the environment in the hydrogen-related environment fails is not considered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a promptly cut off solenoid valve control circuit to the single problem of traditional promptly cut off solenoid valve interlocking control logic.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
novel emergency cut-off solenoid valve interlocking control circuit includes:
the control circuit comprises a 220V AC control circuit and a 24V DC control circuit, wherein the 220V AC control circuit is electrically connected with the 24V DC control circuit through a rectification power supply, and outputs a 24V DC power supply to the 24V DC control circuit;
the 220V AC part control loop comprises a normally open output contact, an intermediate relay KA2 coil, a normally closed contact and an intermediate relay KA3 coil, wherein the fan power supply loop current induction switch outputs a 220V signal; a normally open output contact of the fan power supply loop current induction switch for outputting a 220V signal and an intermediate relay KA2 coil are sequentially connected in series to form a fan signal input 220V loop; the intermediate relay KA2 normally-closed contact and the intermediate relay KA3 coil are sequentially connected in series to form a 220V AC-to-24V DC voltage conversion loop; a 220V loop of fan signal input is connected in parallel with a 220V AC to 24V DC voltage conversion loop and then connected in parallel with a rectification power supply;
the 24V DC part control loop comprises a button input control module, a button output control module, a combustible gas concentration alarm input module and an emergency cut-off electromagnetic valve signal output module for outputting a DC direct current signal to an emergency cut-off electromagnetic valve;
the button input control module is connected in series with the button output control module and then connected in parallel with the emergency cut-off solenoid valve signal output module;
the button input control module comprises a local control button 1SB normally closed contact, a remote control button 1SB ' normally closed contact and a remote control button 2SB ' normally open contact which are sequentially connected in series, and the remote control button 2SB ' normally open contact, the local control button 2SB normally open contact and the intermediate relay KA1 normally open contact which are sequentially connected in parallel;
the button output control module comprises an intermediate relay KA1 coil and a connecting signal indicator HW2 which are connected in parallel;
the combustible gas concentration alarm input module comprises a combustible gas concentration alarm controller normally open output contact which is connected in parallel, and the button input control module is connected in parallel with the combustible gas concentration alarm controller normally open output contact and the intermediate relay KA3 normally open contact;
the emergency cut-off solenoid valve signal output module comprises a signal output wiring point of an emergency cut-off solenoid valve connected with a normally open contact of the intermediate relay KA1 in series.
The 220V AC part control loop comprises a fuse FU1 connected to the input side of the line power supply.
Wherein, the output side of fuse FU1 is provided with maintenance knob SA1.
The output side of the overhaul knob SA1 is connected with a power signal indicator lamp HW1, and the power signal indicator lamp HW1 is connected to the input side of the fan signal input 220V loop in parallel.
The remote control button 1SB ', the remote control button 2SB', and the on signal indicator lamp HW2 are provided near a remote installation room of the quick action emergency valve.
The positive terminal of the intermediate relay KA1 coil is connected with the negative terminal of the normally open contact of the remote control button 2SB', and the positive terminal of the switch-on signal indicator HW2 is connected with the negative terminal of the normally open contact of the local control button 2 SB; and the coil of the intermediate relay KA1 and the negative terminal of the connection signal indicator HW2 are connected with the negative terminal of the rectification power supply.
Wherein, the positive terminal of the normally closed contact of the local control button 1SB is connected with the positive terminal of the rectification power supply; the normally open contact of the intermediate relay KA1 is connected with the positive end of the rectification power supply, and the negative terminal of the output contact of the emergency cut-off electromagnetic valve is connected with the negative end of the rectification power supply.
The utility model discloses promptly cut off solenoid valve control circuit when having considered the fan and breaking down, the control demand of the control of cutting off the control promptly cut off valve, the control circuit of design can realize when the fan trouble, and the requirement of cutting off promptly cut off valve has important production practice and realistic meaning fast.
Drawings
Fig. 1 is a schematic diagram illustrating a principle of emergency cut-off of a solenoid valve control circuit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model discloses emergency cut-off solenoid valve interlocking control circuit for the 24V DC signal of 220V AC signal, combustible gas concentration alarm control ware of the current induction switch who receives fan power supply loop, output 24V DC closes the solenoid valve signal, include:
the 220V AC part control loop comprises a fuse FU1, an overhaul knob SA1, a power signal indicator HW1, a normally open output contact, an intermediate relay KA2 coil and a normally closed contact thereof, and an intermediate relay KA3 coil, wherein the fuse FU1, the overhaul knob SA1, the power signal indicator HW1, the normally open output contact of a current induction switch of a fan power supply loop output 220V signals; a normally open output contact of a 220V signal output by a current induction switch of the fan power supply loop and an intermediate relay KA2 coil are sequentially connected in series to form a fan signal input 220V loop; the intermediate relay KA2 normally-closed contact and the intermediate relay KA3 coil are sequentially connected in series to form a 220V AC-to-24V DC voltage conversion loop; a 220V AC-to-24V DC voltage conversion loop, a fan signal input 220V loop and a power signal indicator light HW1 are connected in parallel between a live wire and a zero wire of an AC 220 power supply;
the 24V DC part control loop comprises a button input control module, a button output control module, a combustible gas concentration alarm input module and an emergency cut-off electromagnetic valve output module.
The button input control module consists of a local control button 2SB normally open contact, a local control button 1SB normally closed contact, a remote control button 2SB 'normally open contact, a remote control button 1SB' normally closed contact and an intermediate relay KA1 normally open auxiliary contact; wherein, local control button 1SB normally closed contact, remote control button 1SB ' normally closed contact, remote control button 2SB ' normally open contact establish ties in proper order, and remote control button 2SB ' normally open contact is parallelly connected in proper order with local control button 2SB normally closed contact, auxiliary relay KA1 normally open contact.
The button output control module comprises an intermediate relay KA1 coil and a power-on indicating signal lamp HW2; the combustible gas concentration alarm input module comprises a combustible gas concentration alarm controller normally open output contact;
the emergency cut-off electromagnetic valve output module comprises a direct-current signal output connection point for outputting a 24V DC signal to the emergency cut-off electromagnetic valve (the electromagnetic valve is in a 24V DC power-on closed type, and is closed and cut off after receiving the 24V DC signal). The positive terminal of the output terminal is connected with the negative terminal of the normally open contact of the intermediate relay KA1, the negative terminal is connected with the negative electrode of the rectification power supply, and the positive terminal of the normally open contact of the intermediate relay KA1 is connected with the positive electrode of the rectification power supply.
The control process of the present invention is explained as follows:
the first condition is as follows:
when the AC 220V power supply is switched on, the maintenance knob SA1 is normally in a normally closed state, and the power supply indicator light HW1 is lightened. At the moment, if the fan power supply loop is normal, the normally-open output contact of the fan power supply loop is closed, the coil of the intermediate relay KA2 is electrified, the normally-closed contact of the intermediate relay KA is disconnected, and the coil of the intermediate relay KA3 is electrified, so that other functions of the control loop are not influenced.
After the start button 2SB normally open contact or the remote start button 2SB 'normally open contact of pressing the case face button, button 1SB and 1SB' normally closed contact keep the on-state, and auxiliary relay KA1 coil is electrified, and auxiliary relay KA1 normally open contact is closed, and control circuit switch-on, switch-on signal HW2 are lighted, and the urgent solenoid valve that cuts off is normally cut off.
When the combustible gas reaches the preset alarm concentration and the combustible gas alarm controller inputs an alarm signal, the normally closed contact is closed, the normally open contact of the intermediate relay KA1 is closed, the control loop is connected, the connection signal lamp HW2 is lightened, and the emergency cut-off electromagnetic valve is normally cut off.
Case two:
when the AC 220V power supply is switched on, the maintenance knob SA1 is normally in a normally closed state, and the power supply indicator light HW1 is lightened. If fan power supply circuit trouble outage this moment, fan power supply circuit normally opens the output contact disconnection, and auxiliary relay KA2 coil loses the electricity, and its normally closed contact is closed, and auxiliary relay KA3 coil is electrified, and direct linkage auxiliary relay KA1 coil is electrified, and auxiliary relay KA1 normally open contact is closed, and control circuit switch-on, switch-on signal lamp HW2 lights, and the emergency cut-off solenoid valve is normally cut off.
The utility model discloses have concurrently and have the linkage of gas concentration detection and fan power-off protection and cut off the control function of promptly cutting off the solenoid valve.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments should also be regarded as the protection scope of the present invention.
Claims (7)
1. The novel emergency cut-off electromagnetic valve interlocking control loop is characterized by comprising a 220V AC control loop and a 24V DC control loop, wherein the 220V AC control loop is electrically connected with the 24V DC control loop through a rectification power supply and outputs a 24V DC power supply to the 24V DC control loop;
the 220V AC control loop comprises a normally open output contact, an intermediate relay KA2 coil and a normally closed contact thereof, and an intermediate relay KA3 coil, wherein the fan power supply loop current induction switch outputs a 220V signal; a normally open output contact of the fan power supply loop current induction switch for outputting a 220V signal and an intermediate relay KA2 coil are sequentially connected in series to form a fan signal input 220V loop; the intermediate relay KA2 normally-closed contact and the intermediate relay KA3 coil are sequentially connected in series to form a 220V AC-to-24V DC voltage conversion loop; a fan signal input 220V loop is connected with a 220V AC to 24V DC voltage conversion loop in parallel and then is connected with a rectification power supply in parallel;
the 24V DC control loop comprises a button input control module, a button output control module, a combustible gas concentration alarm input module and an emergency cut-off solenoid valve signal output module for outputting a DC direct current signal to an emergency cut-off solenoid valve;
the button input control module is connected with the button output control module in series and then connected with the emergency cut-off electromagnetic valve signal output module in parallel;
the button input control module comprises a local control button 1SB normally closed contact, a remote control button 1SB ' normally closed contact and a remote control button 2SB ' normally open contact which are sequentially connected in series, and the remote control button 2SB ' normally open contact, the local control button 2SB normally open contact and the intermediate relay KA1 normally open contact which are sequentially connected in parallel;
the button output control module comprises an intermediate relay KA1 coil and a connecting signal indicator HW2 which are connected in parallel;
the combustible gas concentration alarm input module comprises a combustible gas concentration alarm controller normally open output contact which is connected in parallel, and the button input control module is connected with the combustible gas concentration alarm controller normally open output contact and the intermediate relay KA3 normally open contact in parallel;
the emergency cut-off solenoid valve signal output module comprises a signal output wiring point of an emergency cut-off solenoid valve connected with a normally open contact of the intermediate relay KA1 in series.
2. The interlocking control loop of the novel emergency cut-off solenoid valve according to claim 1, characterized in that the 220V AC part of the control loop comprises a fuse FU1 connected to the input side of the line power supply.
3. The novel emergency cut-off solenoid valve interlock control circuit according to claim 2, wherein the output side of the fuse FU1 is provided with a service knob SA1.
4. The novel emergency cut-off solenoid valve interlock control circuit of claim 3, wherein the output side of the maintenance knob SA1 is connected with a power signal indicator lamp HW1, and the power signal indicator lamp HW1 is connected in parallel with the input side of the fan signal input 220V circuit.
5. The novel slam-shut solenoid valve interlock control circuit of claim 1, wherein the remote control button 1SB ', the remote control button 2SB' and the on signal indicator HW2 are disposed near a remote installation room of the slam-shut valve.
6. The novel emergency cut-off solenoid valve interlocking control loop is characterized in that a positive terminal of a coil of an intermediate relay KA1 is connected with a negative terminal of a normally open contact of a remote control button 2SB', and a positive terminal of a cut-on signal indicator lamp HW2 is connected with a negative terminal of a normally open contact of a local control button 2 SB; and the coil of the intermediate relay KA1 and the negative terminal of the connection signal indicator HW2 are connected with the negative terminal of the rectification power supply.
7. The novel emergency cut-off solenoid valve interlocking control loop is characterized in that a positive terminal of a normally closed contact of the local control button 1SB is connected with a positive terminal of a rectification power supply; the normally open contact of the intermediate relay KA1 is connected with the positive end of the rectification power supply, and the negative terminal of the output contact of the emergency cut-off electromagnetic valve is connected with the negative end of the rectification power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222761350.2U CN218497378U (en) | 2022-10-17 | 2022-10-17 | Novel emergency cut-off electromagnetic valve interlocking control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222761350.2U CN218497378U (en) | 2022-10-17 | 2022-10-17 | Novel emergency cut-off electromagnetic valve interlocking control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218497378U true CN218497378U (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222761350.2U Active CN218497378U (en) | 2022-10-17 | 2022-10-17 | Novel emergency cut-off electromagnetic valve interlocking control loop |
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| Country | Link |
|---|---|
| CN (1) | CN218497378U (en) |
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2022
- 2022-10-17 CN CN202222761350.2U patent/CN218497378U/en active Active
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