CN112180292A - System and method for detecting on-off of cables between nuclear power plant reactor control system cabinets - Google Patents
System and method for detecting on-off of cables between nuclear power plant reactor control system cabinets Download PDFInfo
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- CN112180292A CN112180292A CN202011058525.2A CN202011058525A CN112180292A CN 112180292 A CN112180292 A CN 112180292A CN 202011058525 A CN202011058525 A CN 202011058525A CN 112180292 A CN112180292 A CN 112180292A
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- cabinet
- test meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a system and a method for detecting the on-off of cables between cabinets of a reactor control system of a nuclear power plant, belongs to the technical field of electrical equipment detection, and solves the problems that a detection line needs to be lengthened, the operation is inconvenient, devices are easy to damage, communication tools need to be configured and the like when a universal meter detects the on-off of the cables between cabinets. The invention comprises a test meter pen for detecting the on-off of a cable (4) between cabinets, a metal cabinet and a PE protective earth wire (5); the test meter pen, the inter-cabinet cable (4) detected by the test meter pen, the metal cabinet and the PE protective earth wire (5) are connected to form a closed circuit. The invention utilizes the exposed metal cabinet body of the cabinet and the PE protective earth wire between the exposed metal cabinet body and the PE protective earth wire as a part of an electric circuit of the on-off detection system, replaces the traditional lengthened detection lead, and realizes the revolution and innovation that the single-point conduction characteristic of the original detection lead can be used as a detection circuit on any surface of the whole exposed metal cabinet body.
Description
Technical Field
The invention belongs to the technical field of electrical equipment detection, and particularly relates to a system and a method for detecting the on-off of cables between nuclear power plant reactor control system cabinets.
Background
When the integration of the nuclear power plant reactor control system is completed, the conductivity of the electrical circuit between the cabinets needs to be checked. Because the cabinets are distributed at different locations, the wiring relationships exist in several types:
electrical connection between cabinets in different areas of the same floor;
and when the EMC is tested, the cabinets inside and outside the test room are electrically connected.
Because the rack interval is different, and the region is different, and the line is longer (usually between 10 ~ 200 m) between the cabinet, and general inspection method is to carry out the electric wiring continuity inspection with the universal meter, but has following problem:
the multimeter pen is short, and the multimeter pen can be inspected only by lengthening the multimeter pen when being used every time, and meanwhile, due to the lengthened detection line, phenomena that an extension line is wound on a device (such as a relay, a terminal and the like), the extension line is clamped between adjacent devices, the extension line is wound on a wire in a cabinet and the like easily occur, so that the device is possible to loosen or damage; the problem of detection error caused by unreliable connection of the lengthened line can also exist; when the lengthened wire is used for wall penetration, the operation is inconvenient and the like.
The buzzer of the multimeter is small in conduction prompt tone, and if two persons are far away, the cooperative operation can be carried out only by configuring communication equipment such as an interphone and the like.
Due to the problems, the on-off detection of the cables between the cabinets consumes a long time, the operation is inconvenient, the devices are damaged, and the working efficiency is low.
Disclosure of Invention
The universal meter aims to solve the problems that when the universal meter is used for detecting the on-off of a cable between cabinets, a detection line needs to be lengthened, the operation is inconvenient, the damage to devices is easily caused, a communication tool needs to be configured, and the like. The invention provides a system and a method for detecting the connection and disconnection of cables between nuclear power plant reactor control system cabinets, which can complete the conduction detection work of cables between various cabinets.
The invention is realized by the following technical scheme:
the system for detecting the on-off of the cables between the nuclear power plant reactor control systems comprises a test meter pen for detecting the on-off of the cables between the nuclear power plant reactor control systems, a metal cabinet and a PE (polyethylene) protective ground wire;
the test meter pen, the cables among the cabinets detected by the test meter pen, the metal cabinet and the PE protective earth wire are connected to form a closed circuit.
The test device further comprises two test meter pens, namely an A test meter pen and a B test meter pen, and two metal cabinets, namely an A cabinet and a B cabinet, wherein an inter-cabinet cable is positioned between the A cabinet and the B cabinet;
one end of the test meter pen A is connected with one end of an inter-cabinet cable, one end of the inter-cabinet cable is positioned on the cabinet A, one end of the test meter pen B is connected with the other end of the inter-cabinet cable, and the other end of the inter-cabinet cable is positioned on the cabinet B;
the other end of the A test meter pen is connected with the cabinet A, and the other end of the B test meter pen is connected with the cabinet B.
Furthermore, the A test meter pen, the B test meter pen, the A cabinet, the B cabinet, the cables between the cabinets and the PE protective earth wire form a closed circuit, and the voltage directions of the A test meter pen and the B test meter pen connected into the closed circuit are consistent.
Further, the test meter pen comprises a detection circuit and two detection contacts;
one detection contact is used for connecting a cable between the cabinets, the other detection contact is used for connecting the metal cabinet, the detection circuit is arranged between the two detection contacts, and the detection circuit is used for detecting the on-off of the closed circuit.
Furthermore, the two detection contacts are respectively a probe and a jointing clamp;
the probe connection is used for connecting cables between cabinets, and the jointing clamp is used for clamping a metal cabinet.
Furthermore, the probe and the jointing clamp are connected into the detection circuit through leads.
Further, the test meter pen also comprises a buzzer and an indicator light;
when the closed circuit is a conducted closed circuit, the indicator lamp gives out a light prompt, and the buzzer gives out a conduction prompt tone;
when the closed circuit is an open closed circuit, the indicator light and the buzzer do not respond.
Further, the test meter pen also comprises a power supply;
the power supply supplies power for the indicator light and the buzzer.
A nuclear power plant reactor control system inter-cabinet cable on-off detection method is based on the nuclear power plant reactor control system inter-cabinet cable on-off detection system, and the using method of the detection system comprises the following steps:
s1, connecting a closed circuit:
clamping a jointing clamp of the test meter pen A on an exposed metal structure of a cabinet body of a cabinet A, and clamping a jointing clamp of the test meter pen B on an exposed metal structure of a cabinet body of a cabinet B;
contacting a probe of the test meter pen A with a component pin at one end of the inter-cabinet cable, and contacting a probe of the test meter pen B with a component pin at the other end of the inter-cabinet cable;
the PE protective ground wire is connected with the cabinet A and the cabinet B;
s2, detecting the on-off of a closed circuit:
the two detection circuits judge the on-off of the closed circuit and display the result.
Further, the detection circuit displays the result in the following manner:
when the closed circuit is conducted, the buzzers and the indicator lamps of the test meter pen A and the test meter pen B respond;
when the circuit is closed and the circuit is broken, the buzzers and the indicating lamps of the test meter pen A and the test meter pen B do not respond.
Furthermore, a lighting lamp powered by a power supply is further arranged on the test meter pen, and the lighting lamp is used for lighting.
The invention has the following advantages and beneficial effects:
the invention utilizes the exposed metal cabinet body of the cabinet and the PE protective earth wire between the exposed metal cabinet body and the PE protective earth wire as a part of an electric circuit of the on-off detection system, replaces the traditional lengthened detection lead, and realizes the revolution and innovation that the single-point conduction characteristic of the original detection lead can be used as a detection circuit on any surface of the whole exposed metal cabinet body.
The invention solves the problems that the detection is difficult due to large space between cabinets, the lead for detection is not long enough, and the cables between the cabinets in different areas are inconvenient to conduct and detect.
The invention shortens the lead wire for detection, and is convenient for the operation of inspectors; the two paths of sound and light simultaneously prompt the conductivity of the electric circuit, so that the judgment of an inspector is facilitated; meanwhile, the LED lamp has an illumination function, and is convenient for an inspector to observe.
The method is adopted to detect the on-off of the cable between the cabinets, which is not only beneficial to improving the detection quality, but also improves the detection efficiency by about 50 percent.
The inter-cabinet cable on-off detection system has the advantages of simple circuit, high reliability, low manufacturing cost and convenience in popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of the present invention.
Reference numbers and corresponding part names in the drawings:
1. a wall body; 21. a, a cabinet; 22. b, a cabinet; 31. a, testing a meter pen; 32. b, testing a meter pen; 4. an inter-cabinet cable; 5. the PE protects the ground wire.
Detailed Description
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive changes, are within the scope of the present invention.
A nuclear power plant reactor control system inter-cabinet cable 4 on-off detection system is shown in figure 1 and comprises a test meter pen for detecting the on-off of the inter-cabinet cable 4, a metal cabinet and a PE protection ground wire 5;
the test meter pen, the inter-cabinet cable 4 detected by the test meter pen, the metal cabinet and the PE protective earth wire 5 are connected to form a closed circuit.
Preferably, the test system comprises two test meter pens, namely an A test meter pen 31 and a B test meter pen 32, two metal cabinets, namely an A cabinet 21 and a B cabinet 22, and an inter-cabinet cable 4 is positioned between the A cabinet 21 and the B cabinet 22;
one end of the A test meter pen 31 is connected with one end of the inter-cabinet cable 4, one end of the inter-cabinet cable 4 is positioned on the A cabinet 21, one end of the B test meter pen 32 is connected with the other end of the inter-cabinet cable 4, and the other end of the inter-cabinet cable 4 is positioned on the B cabinet 22;
the other end of the A test meter pen 31 is connected with the A cabinet 21, and the other end of the B test meter pen 32 is connected with the B cabinet 22.
Preferably, the a test meter pen 31, the B test meter pen 32, the a cabinet 21, the B cabinet 22, the inter-cabinet cable 4, and the PE protective earth 5 form a closed circuit, and the voltage directions of the a test meter pen 31 and the B test meter pen 32 connected to the closed circuit are the same.
Preferably, the test meter pen comprises a detection circuit and two detection contacts;
one detection contact is used for connecting the cable 4 between the cabinets, the other detection contact is used for connecting the metal cabinet, the detection circuit is arranged between the two detection contacts, and the detection circuit is used for detecting the on-off of the closed circuit.
Preferably, the two detection contacts are a probe and a jointing clamp respectively;
the probe connection is used for connecting cables 4 between cabinets, and the jointing clamp is used for clamping a metal cabinet.
Preferably, the probe and the jointing clamp are connected into the detection circuit through leads.
Preferably, the test meter pen further comprises a buzzer and an indicator light;
when the closed circuit is a conducted closed circuit, the indicator lamp gives out a light prompt, and the buzzer gives out a conduction prompt tone;
when the closed circuit is an open closed circuit, the indicator light and the buzzer do not respond.
Preferably, the test meter pen further comprises a power supply;
the power supply supplies power for the indicator light and the buzzer.
A nuclear power plant reactor control system inter-cabinet cable 4 on-off detection method is based on the nuclear power plant reactor control system inter-cabinet cable 4 on-off detection system, and the using method of the detection system comprises the following steps:
s1, connecting a closed circuit:
clamping a jointing clamp of the A test meter pen 31 on an exposed metal structure of the cabinet body of the A cabinet 21, and clamping a jointing clamp of the B test meter pen 32 on an exposed metal structure of the cabinet body of the B cabinet 22;
contacting a probe of the test meter pen A31 with a component pin at one end of the inter-cabinet cable 4, and contacting a probe of the test meter pen B32 with a component pin at the other end of the inter-cabinet cable 4;
the PE protective ground wire 5 is connected with the cabinet A21 and the cabinet B22;
s2, detecting the on-off of a closed circuit:
the two detection circuits judge the on-off of the closed circuit and display the result.
Preferably, the manner of displaying the result by the detection circuit is as follows:
when the closed circuit is conducted, the buzzers and the indicator lamps of the test meter pen A31 and the test meter pen B32 both respond;
when the closed circuit is open, the buzzers and the indicator lamps of the test meter pen A31 and the test meter pen B32 are not responsive.
Preferably, the test meter pen is further provided with a lighting lamp powered by a power supply, and the lighting lamp is used for lighting.
Example 1:
the a cabinet 21 and the B cabinet 22 are respectively in different rooms, the a cabinet 21 is located in the a room, and the B cabinet 22 is located in the B room. A wall body 1 is arranged between a room A and a room B, an inter-cabinet cable 4 is arranged between a pin of a cabinet terminal of the room A and a pin of a cabinet terminal of the room B, the inter-cabinet cable 4 penetrates through the wall body 1, and when the inter-cabinet cable 4 is subjected to on-off detection, a wiring clamp of an A test meter pen 31 is only required to be clamped at any point on an exposed cabinet body 21 of the cabinet A, and a probe of the A test meter pen 31 is connected to the pin of the cabinet terminal of the room A; the wiring clamp of the B test meter pen 32 is clamped at any point on the exposed cabinet body of the B cabinet, the probe of the B test meter pen 32 is connected to a pin of a cabinet terminal in a room B, if the circuit is conducted, indicator lamps of the A test meter pen 31 and the B test meter pen 32 are both luminous and prompt, and buzzers of the A test meter pen 31 and the B test meter pen 32 also send out conduction prompt tones.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The system for detecting the on-off of the cables between the nuclear power plant reactor control system cabinets is characterized by comprising a test meter pen for detecting the on-off of the cables (4) between the cabinets, a metal cabinet and a PE protection ground wire (5);
the test meter pen, the inter-cabinet cable (4) detected by the test meter pen, the metal cabinet and the PE protective earth wire (5) are connected to form a closed circuit.
2. The system for detecting the on-off of the cables between the nuclear power plant reactor control system cabinets according to claim 1, characterized by comprising two test meter pens, namely an A test meter pen (31) and a B test meter pen (32), two metal cabinets, namely an A cabinet (21) and a B cabinet (22), wherein the cables (4) between the cabinets are located between the A cabinet (21) and the B cabinet (22);
one end of the A test meter pen (31) is connected with one end of the inter-cabinet cable (4), one end of the inter-cabinet cable (4) is positioned on the A cabinet (21), one end of the B test meter pen (32) is connected with the other end of the inter-cabinet cable (4), and the other end of the inter-cabinet cable (4) is positioned on the B cabinet (22);
the other end of the A test meter pen (31) is connected with the cabinet A (21), and the other end of the B test meter pen (32) is connected with the cabinet B (22).
3. The system for detecting the on-off of the cables between the nuclear power plant reactor control system cabinets according to claim 2, wherein an A test meter pen (31), a B test meter pen (32), the A cabinet (21), the B cabinet (22), the cables (4) between the cabinets and a PE protective earth wire (5) form a closed circuit, and the voltage directions of the A test meter pen (31) and the B test meter pen (32) connected into the closed circuit are consistent.
4. The nuclear power plant reactor control system on-off detection system for cables among cabinets according to claim 3, wherein the test meter pen comprises a detection circuit and two detection contacts;
one detection contact is used for connecting a cable (4) between the cabinets, the other detection contact is used for connecting the metal cabinet, the detection circuit is arranged between the two detection contacts, and the detection circuit is used for detecting the on-off of the closed circuit.
5. The system for detecting the on-off of the cable between the nuclear power plant reactor control system cabinets according to claim 4, wherein the two detection contacts are a probe and a jointing clamp respectively;
the probe connection is used for connecting cables (4) between cabinets, and the jointing clamp is used for clamping a metal cabinet.
6. The nuclear power plant reactor control system on-off detection system for cables among cabinets is characterized in that the probe and the jointing clamp are connected into the detection circuit through leads.
7. The nuclear power plant reactor control system on-off detection system for cables among cabinets is characterized in that the test meter pen further comprises a buzzer and an indicator light;
when the closed circuit is a conducted closed circuit, the indicator lamp gives out a light prompt, and the buzzer gives out a conduction prompt tone;
when the closed circuit is an open closed circuit, the indicator light and the buzzer do not respond.
8. The nuclear power plant reactor control system on-off detection system for cables between cabinets of claim 7, wherein the test meter pen further comprises a power source;
the power supply supplies power for the indicator light and the buzzer.
9. A nuclear power plant reactor control system inter-cabinet cable on-off detection method is based on the nuclear power plant reactor control system inter-cabinet cable on-off detection system of any one of claims 1-8, and the use method of the detection system comprises the following steps:
s1, connecting a closed circuit:
clamping a jointing clamp of the A test meter pen (31) on an exposed metal structure of a cabinet body of an A cabinet (21), and clamping a jointing clamp of the B test meter pen (32) on an exposed metal structure of a cabinet body of a B cabinet (22);
the probe of the test meter pen (31) A is in contact with the component pin at one end of the inter-cabinet cable (4), and the probe of the test meter pen (32) B is in contact with the component pin at the other end of the inter-cabinet cable (4);
the PE protective earth wire (5) is connected with the cabinet A (21) and the cabinet B (22);
s2, detecting the on-off of a closed circuit:
the two detection circuits judge the on-off of the closed circuit and display the result.
10. The method for detecting the on-off of the cable between the nuclear power plant reactor control system cabinets according to claim 9, wherein the mode of the detection circuit displaying the result is as follows:
when the closed circuit is conducted, the buzzers and the indicator lamps of the test meter pen A (31) and the test meter pen B (32) both respond;
when the circuit is closed and broken, the buzzers and the indicator lamps of the test meter pen A (31) and the test meter pen B (32) have no response.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011058525.2A CN112180292A (en) | 2020-09-30 | 2020-09-30 | System and method for detecting on-off of cables between nuclear power plant reactor control system cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011058525.2A CN112180292A (en) | 2020-09-30 | 2020-09-30 | System and method for detecting on-off of cables between nuclear power plant reactor control system cabinets |
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| CN112180292A true CN112180292A (en) | 2021-01-05 |
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| CN202011058525.2A Pending CN112180292A (en) | 2020-09-30 | 2020-09-30 | System and method for detecting on-off of cables between nuclear power plant reactor control system cabinets |
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Application publication date: 20210105 |