Electromagnetic valve automatic control electrical box

Abstract

The invention belongs to the field of radiation monitoring electrical equipment, and provides an electromagnetic valve automatic control electrical box, which comprises an equipment case, a power supply module and an electromagnetic valve control module, and is characterized in that the power supply module comprises a wiring terminal strip 001BN, a 220V power indicator lamp 001LA, a power switch 001CC, a power circuit breaker 001JA, an electromagnetic valve protection fuse 001FU, a direct current power supply protection fuse 002FU and a PLC power supply module 001AL; the electromagnetic valve control module comprises a wiring terminal strip 001BN, a 24V power indicator 002LA, a PLC-CPU module 001UC, a main valve button 001TO, a first electromagnetic valve 001EV, a second electromagnetic valve 002EV and a third electromagnetic valve 003EV. The electromagnetic valve automatic control electrical box is simple in circuit structure, convenient to use and high in universality, and sampling pipelines can be automatically switched according to gas radiation dose measurement values.

Description

Technical Field

[0001] The invention belongs to the field of radiation monitoring electrical equipment, and in particular relates to an electromagnetic valve automatic control electrical box, which is used for automatically controlling the switch of an electromagnetic valve in a sampling pipeline. Background Art

[0002] The gas in the chimney of a nuclear power plant is directly discharged into the air. Under normal circumstances, the gas in the chimney is monitored using the H2PIGM11H monitor. In the event of an accident or after an accident, it is necessary to switch to the H2PIS02H sampling device and the H2NGM02H high-range inert gas monitor for monitoring. The existing switching method is manual switching. When an accident occurs, manual switching is performed after the dose rate exceeds the threshold alarm, which cannot effectively and timely monitor radioactive gases after the accident. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a solenoid valve automatic control electrical box which has a simple circuit design, high reliability, and a long service life of internal components and can realize automatic switching of gas sampling pipelines in the chimney of a nuclear power plant under normal operating conditions and accidents and after accidents.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric box for automatically controlling a solenoid valve, comprising an equipment chassis, a power supply module and a solenoid valve control module.

[0005] The equipment chassis is a standard stainless steel junction box. The equipment panel is provided with a power indicator light, a power switch, and a main valve switch.

[0006] The power supply module includes a terminal block 001BN, a 220V power indicator light 001LA, a power switch 001CC, a power circuit breaker 001JA, a solenoid valve protection fuse 001FU, a DC power protection fuse 002FU, and a PLC power module 001AL. The external AC 220V power input is output to the fuse through the terminal block, the power switch, and the circuit breaker, and then shunted to the PLC power module through the fuse. The PLC power module outputs a 24V DC power supply to power the power indicator light and the PLC-CPU module.

[0007] The solenoid valve control module includes a terminal block 001BN, a 24V power indicator light 002LA, a PLC-CPU module 001UC, a main valve button 001TO, a 1# solenoid valve 001EV, a 2# solenoid valve 002EV and a 3# solenoid valve 003EV.

[0008] The L phase of the 220V power supply is input into the PLC-CPU module, and the two-way switch alarm signals are connected to the digital signal input end of the PLC-CPU module through the wiring terminals. The three solenoid valve power supplies are connected to the output end of the PLC-CPU module through the wiring terminals. The PLC program controls the on and off of the L phase power supply of the solenoid valve according to the changes of the switch alarm signal, thereby controlling the opening and closing of the solenoid valve and switching the sampling pipeline.

[0009] The solenoid valve automatic control electrical box of the present invention has a simple circuit structure and can automatically switch the sampling pipeline according to the gas radiation dose measurement value. It has the advantages of easy use, fewer electrical components, strong circuit protection, strong versatility, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the device chassis panel in the present invention.

[0011] Figure 2 It is a front view of the interior of the device chassis in the present invention.

[0012] Figure 3 It is a bottom view of the device chassis in the present invention.

[0013] Figure 4 This is a circuit diagram of the power supply module in the present invention.

[0014] Figure 5 It is a circuit diagram of the solenoid valve control module in the present invention. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] This embodiment provides a solenoid valve automatic control electrical box, including an equipment chassis, a power supply module and a solenoid valve control module.

[0018] like Figure 1 , Figure 2, Figure 3 As shown, the equipment chassis has a 220V power indicator light opening, a 24V power indicator light opening, a main valve button opening, a lock hole, and a power switch opening on the chassis panel. The chassis contains an inner lining plate and a guide rail. The chassis bottom has two VG M25-1 / MS68 cable connector openings, through which the power cable and control cable to the junction box are passed. Two VG M20-1 / MS68 cable connector openings are opened for backup. Four VG9-MS68 cable connector openings are opened, through which the solenoid valve cable is passed.

[0019] like Figure 4 As shown, the power supply module includes a terminal block 001BN, a 220V power indicator light 001LA, a power switch 001CC, a power circuit breaker 001JA, a solenoid valve protection fuse 001FU, a DC power protection fuse 002FU, and a PLC power module 001AL. The external AC 220V power supply is input to the input end of the PLC power module 001AL through terminals 2 and 3 of the terminal block 001BN, the power switch 001CC, the power circuit breaker 001JA, and the DC power protection fuse 002FU. The 220V power indicator light 001LA is connected to terminals 2 and 3 of the terminal block 001BN. The input end of the solenoid valve protection fuse 001FU is connected to the input end of the DC power protection fuse 002FU, and the output end is connected to terminal 9 of the terminal block 001BN. The external AC 220V power input is output to the fuse through the terminal block, power switch, and circuit breaker, and then shunted to the PLC power module through the fuse.

[0020] like Figure 5As shown, the solenoid valve control module includes a terminal block 001BN, a 24V power indicator light 002LA, a PLC-CPU module 001UC, a main valve button 001TO, a 1# solenoid valve 001EV, a 2# solenoid valve 002EV and a 3# solenoid valve 003EV. The upper and lower layers of terminals 15, 16, 17 and 18 of the terminal block 001BN are connected by cross-connectors respectively. The lower layers of terminals 9, 10, 11 and 12 of the terminal block 001BN are connected by cross-connectors. The output end of the PLC power module 001AL in the equipment power supply module is connected to the terminal 15 of the terminal block 001BN. The power input end of the PLC-CPU module 001UC is connected to the terminal 15 of the terminal block 001BN. The 24V power indicator light 002LA is connected to the terminal 18 of the terminal block 001BN. The main valve switch 001TO is connected to the terminal 15 and the terminal 20 of the terminal block 001BN. The two alarm signal inputs are connected to the terminals 16, 19 and 17, 20 of the terminal block 001BN respectively. The switch signal input ports DIa.0, DIa.1, and DIa.2 of the PLC-CPU module 001UC are connected to the terminals 19 and 20 of the terminal block 001BN respectively. The AC power input 1L of the PLC-CPU module 001UC is connected to the output of the solenoid valve protection fuse 001FU of the equipment power supply module. The relay output terminals DQa.0, DQa.1, and DQa.2 of the PLC-CPU module 001UC are connected to the terminals 9, 10, and 11 of the terminal block 001BN respectively. The power line of 1# solenoid valve 001EV is connected to terminals 6 and 9 of terminal block 001BN, the power line of 2# solenoid valve 002EV is connected to terminals 7 and 10 of terminal block 001BN, and the power line of 3# solenoid valve 003EV is connected to terminals 8 and 11 of terminal block 001BN. The two-way switch alarm signal is connected to the digital signal input terminal of the PLC-CPU module through the terminal block, and the power supply of the three solenoid valves is connected to the output terminal of the PLC-CPU module through the terminal block. The internal program of the PLC controls the power on and off of each solenoid valve according to the change of the alarm signal.

[0021] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0022] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve automatic control electrical box, characterized by: It includes an equipment chassis, a power supply module and a solenoid valve control module. The solenoid valve control module includes a terminal block 001BN, a 24V power indicator light 002LA, a PLC-CPU module 001UC, a main valve button 001TO, a 1# solenoid valve 001EV, a 2# solenoid valve 002EV and a 3# solenoid valve 003EV. The upper and lower layers of the terminals 15, 16, 17 and 18 of the terminal block 001BN are connected by cross-connectors respectively. The 9 The lower layers of terminals 10, 11, and 12 are connected with cross-connectors. The output end of the PLC power module 001AL in the equipment power supply module is connected to terminal 15 of the terminal block 001BN. The power input end of the PLC-CPU module 001UC is connected to terminal 15 of the terminal block 001BN. The 24V power indicator light 002LA is connected to terminal 18 of the terminal block 001BN. The main valve switch 001TO is connected to terminal 15 of the terminal block 001BN. The two alarm signal inputs are connected to terminals 16, 19 and 17, 20 of the wiring terminal block 001BN respectively. The switch signal input ports DIa.0, DIa.1, and DIa.2 of the PLC-CPU module 001UC are connected to terminals 19 and 20 of the wiring terminal block 001BN respectively. The AC power input 1L end of the PLC-CPU module 001UC is connected to the output end of the solenoid valve protection fuse 001FU of the equipment power supply module. -The relay output terminals DQa.0, DQa.1, and DQa.2 of the CPU module 001UC are connected to terminals 9, 10, and 11 of the terminal block 001BN respectively, the power line of the 1# solenoid valve 001EV is connected to terminals 6 and 9 of the terminal block 001BN, the power line of the 2# solenoid valve 002EV is connected to terminals 7 and 10 of the terminal block 001BN, and the power line of the 3# solenoid valve 003EV is connected to terminals 8 and 11 of the terminal block 001BN.

2. The solenoid valve automatic control electrical box according to claim 1 is characterized in that: The equipment chassis is a standard stainless steel junction box.

3. The solenoid valve automatic control electrical box according to claim 1 is characterized in that: The power supply module includes a terminal block 001BN, a 220V power indicator light 001LA, a power switch 001CC, a power circuit breaker 001JA, a solenoid valve protection fuse 001FU, a DC power protection fuse 002FU, and a PLC power module 001AL. The external AC 220V power supply is input to the input end of the PLC power module 001AL through terminals 2 and 3 of the terminal block 001BN, the power switch 001CC, the power circuit breaker 001JA and the DC power protection fuse 002FU, the 220V power indicator light 001LA is connected to terminals 2 and 3 of the terminal block 001BN, the input end of the solenoid valve protection fuse 001FU is connected to the input end of the DC power protection fuse 002FU, and the output end is connected to terminal 9 of the terminal block 001BN.

4. The solenoid valve automatic control electrical box according to claim 1 is characterized in that: The two-way switch alarm signal is connected to the digital signal input end of the PLC-CPU module through the wiring terminal, and the three solenoid valve power supplies are connected to the output end of the PLC-CPU module through the wiring terminal. The internal program of the PLC controls the power on and off of each solenoid valve according to the changes in the alarm signal.

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