CN112444701A - Secondary circuit detection device and circuit operation intrinsic safety method - Google Patents
Secondary circuit detection device and circuit operation intrinsic safety method Download PDFInfo
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- CN112444701A CN112444701A CN202011341978.6A CN202011341978A CN112444701A CN 112444701 A CN112444701 A CN 112444701A CN 202011341978 A CN202011341978 A CN 202011341978A CN 112444701 A CN112444701 A CN 112444701A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Abstract
The application provides a secondary circuit detection device and a circuit operation intrinsic safety method, wherein the secondary circuit detection device comprises a terminal box and a detection piece; the terminal box comprises a plurality of terminal modules, a plurality of relay protection modules and a plurality of area modules; the relay protection module is electrically connected with the area module through the terminal module; the detection piece is inserted in the terminal module and used for short-circuiting the area module and electrically connecting the relay protection module so as to detect the relay protection module. By adopting the device, the detection piece is directly inserted into the terminal module to complete short circuit and disconnection between the terminals in the terminal module, the circuits in the terminal box are not required to be disassembled and restored after disassembly, automatic safety measures and isolation work of a secondary circuit are realized, the condition of workers and detection equipment is prevented from influencing the cable connection quality, and the device has the characteristics of safety, convenience, high efficiency and the like.
Description
Technical Field
The present disclosure relates to power systems, and particularly to a secondary circuit detection device and a circuit operation intrinsic safety method.
Background
The terminal box is a switching construction line, marks branch lines and provides a convenient interface device for wiring and line inspection. In some cases, in order to facilitate construction and debugging, some special equipment which is regularly arranged, such as a short-circuit isolator and the like, can be arranged in the terminal box, and the terminal box needs to be periodically overhauled in the using process of the terminal box.
Carry out maintenance work on spot to the terminal box, need carry out safety anti-accident measure, wherein, safety anti-accident measure includes: the terminal strip of the current loop is subjected to short circuit and breaking isolation of a relay protection secondary system, so that a wiring terminal and a loop test terminal of the secondary loop of the access mutual inductor are convenient for on-site safety measure maintenance work and relay protection test work.
However, in the maintenance process, the lines inside the terminal box need to be disassembled and then restored after disassembly, and the terminal metal of the terminal strip of the existing terminal box and the special high-current test terminal are all exposed, so that an electric shock and improper restoration or a restoration error caused by mistaken touch of a worker are easily caused.
Disclosure of Invention
The application provides a secondary circuit detection device and a circuit operation intrinsic safety method, which aim to solve the problems that in the prior art, all terminal metals are exposed, so that workers are easy to get an electric shock due to mistaken touch, the recovery is not in place, or the recovery is wrong.
In a first aspect, the present application provides a secondary circuit detection apparatus, comprising: a terminal box and a detection piece;
the terminal box comprises a plurality of terminal modules, a plurality of relay protection modules and a plurality of area modules; the relay protection module is electrically connected with the area module through the terminal module;
the detection piece is inserted in the terminal module and used for short-circuiting the area module and electrically connecting the relay protection module so as to detect the relay protection module.
Optionally, the terminal module includes a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal;
the first wiring terminal and the second wiring terminal are electrically connected with the region module; the third wiring terminal and the fourth wiring terminal are electrically connected with the relay protection module; the first wiring terminal is movably connected with the third wiring terminal, and the second wiring terminal is movably connected with the fourth wiring terminal.
Optionally, the terminal module is provided with a plug hole;
the detection piece penetrates through the plug hole and is used for movably connecting the first wiring terminal with the second wiring terminal, movably connecting the third wiring terminal with the fourth wiring terminal, disconnecting the first wiring terminal with the third wiring terminal and disconnecting the second wiring terminal with the fourth wiring terminal.
Optionally, the area module includes a current transformer, a voltage transformer, and a signal relay.
Optionally, the terminal box further includes a plurality of safety measure covers, and the safety measure covers correspond to the terminal modules one to one and are used for sealing the terminal modules.
Optionally, the terminal box further includes a control unit, a connecting piece is arranged on the safety measure cover, and the connecting piece is in signal connection with the control unit and the terminal module.
Optionally, the first wiring terminal and the second wiring terminal are elastic pieces and are bending wiring terminals symmetrically arranged, and the third wiring terminal and the fourth wiring terminal are bending wiring terminals symmetrically arranged.
Optionally, the detection part comprises a plug-in part, a clamping part and a handle; one end of the insertion part is fixedly connected with the clamping part, the clamping part is clamped with the terminal module, and the handle is fixedly connected with one side, far away from the insertion part, of the clamping part.
Optionally, the terminal box further comprises a temperature measuring part, and the temperature measuring part is fixedly connected with the first wiring terminal, the second wiring terminal, the third wiring terminal and the fourth wiring terminal through insulating patches respectively.
In a second aspect, the present application provides a loop operation intrinsic safety method applied to the secondary loop detection apparatus of the first aspect, including:
preparing a terminal box, wherein the terminal box comprises a plurality of terminal modules, a plurality of relay protection modules and a plurality of area modules, and the terminal modules comprise a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal; the first wiring terminal and the second wiring terminal are electrically connected with the region module; the third wiring terminal and the fourth wiring terminal are electrically connected with the relay protection module; the first connecting terminal is movably connected with the third connecting terminal, and the second connecting terminal is movably connected with the fourth connecting terminal;
electrically connecting the first connection terminal and the second connection terminal;
disconnecting the first connecting terminal and the third connecting terminal, and disconnecting the second connecting terminal and the fourth connecting terminal;
and detecting the electric connection state between the third wiring terminal and the fourth wiring terminal so as to detect the relay protection module.
The application provides a secondary circuit detection device and a circuit operation intrinsic safety method, wherein the secondary circuit detection device comprises a terminal box and a detection piece; the terminal box comprises a plurality of terminal modules, a plurality of relay protection modules and a plurality of area modules; the relay protection module is electrically connected with the area module through the terminal module; the detection piece is inserted in the terminal module and used for short-circuiting the area module and electrically connecting the relay protection module so as to detect the relay protection module. By adopting the device, the detection piece is directly inserted into the terminal module to complete short circuit and disconnection between the terminals in the terminal module, the circuits in the terminal box are not required to be disassembled and restored after disassembly, automatic safety measures and isolation work of a secondary circuit are realized, the condition of workers and detection equipment is prevented from influencing the cable connection quality, and the device has the characteristics of safety, convenience, high efficiency and the like.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a terminal box in a secondary circuit detection device provided in the present application;
FIG. 2 is a side cross-sectional view of a detecting member and a terminal module in a secondary circuit detecting device according to the present application;
fig. 3 is a schematic diagram illustrating a connection of a terminal in-box module in a secondary circuit detection device according to the present application;
FIG. 4 is a schematic diagram illustrating a normal state of circuit reflow according to an embodiment of the present application;
FIG. 5 is a schematic view of a circuit reflow insertion detector in one embodiment of the present application;
FIG. 6 is a schematic diagram of a circuit reflow repair condition according to an embodiment of the present application;
FIG. 7 is a state diagram illustrating current sensing of circuit backflow in one embodiment of the present application;
FIG. 8 is a schematic connection diagram of a temperature measuring member in the secondary circuit testing apparatus provided in the present application;
fig. 9 is a schematic flow chart of a method for intrinsically safe loop operation according to the present application.
The terminal comprises a terminal box 1, a terminal module 11, a terminal module 111, a first wiring terminal, a 1111-first contact, a 1112-third contact, a 112-second wiring terminal, a 1121-second contact, an 1122-fourth contact, a 113-third wiring terminal, a 1131-fifth contact, an 1132-sixth contact, a 114-fourth wiring terminal, a 1141-seventh contact, an 1142-eighth contact, a 115-plug hole, a 116-clamping groove, a 12-relay protection module, a 13-area module, a 14-safety measure cover, a 141-connecting piece, a 15-control unit and a 16-temperature measuring piece; 2-detection piece, 21-plug part, 22-clamping part, 221-clamping bulge and 23-handle.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 3, the present application provides a secondary circuit detection device, which includes a terminal box 1 and a detection piece 2;
the terminal box 1 comprises a plurality of terminal modules 11, a plurality of relay protection modules 12 and a plurality of area modules 13; the relay protection module 12 is electrically connected with the area module 13 through the terminal module 11;
the detection piece 2 is inserted into the terminal module 11 and used for short-circuiting the area module 13 and electrically connecting the relay protection module 12 so as to detect the relay protection module 12, the relay protection module 12 is a CT current loop, and the CT current loop has an open-circuit prevention function so as to provide circuit protection.
The terminal module 11 set up in relay protection module 12 with between the regional module 13, among terminal module 11, relay protection module 12 and regional module 13 three, two liang of mutual correspondence, that is to say one terminal module 11 corresponds one relay protection module 12, also corresponds one simultaneously regional module 13.
When secondary loop detection is carried out, the detection piece 2 is inserted into and pulled out of the terminal module 11, cables do not need to be disassembled, and workers do not contact the terminal strip on the terminal module 11, so that automatic safety measures and isolation work are achieved.
The terminal module 11 includes a first connection terminal 111, a second connection terminal 112, a third connection terminal 113, and a fourth connection terminal 114.
The first connection terminal 111 and the second connection terminal 112 are electrically connected to the area module 13; the third connection terminal 113 and the fourth connection terminal 114 are both electrically connected to the relay protection module 12; first binding post 111 swing joint third binding post 113, second binding post 112 swing joint fourth binding post 114 will relay protection module 12 with regional module 13 electricity is connected.
Referring to fig. 2, the terminal module 11 is provided with a plugging hole 115, and the detecting member 2 penetrates through the plugging hole 115 and is used for movably connecting the first connection terminal 111 and the second connection terminal 112, movably connecting the third connection terminal 113 and the fourth connection terminal 114, disconnecting the first connection terminal 111 and the third connection terminal 113, and disconnecting the second connection terminal 112 and the fourth connection terminal 114.
The detection piece 2 can be inserted into the terminal module 11, so that the first connection terminal 111 and the second connection terminal 112 are electrically connected, the first connection terminal 111 and the third connection terminal 113 are disconnected, the second connection terminal 112 and the fourth connection terminal 114 are disconnected, so that the region module 13 side is short-circuited, and the relay protection module 12 side is conducted with the detection piece 2; the detection piece 2 is used for detecting the electric connection state between the third wiring terminal 113 and the fourth wiring terminal 114, so that the relay protection module 12 is detected, the detection piece 2 is directly inserted into the terminal module 11 to complete short circuit and disconnection between the wiring terminals, and the detection of the relay protection module 12 is realized right by adopting the plug hole 115 of external operation on the terminal module 11, so that the effects of only plugging and unplugging, no wire dismounting and plug and play are realized, and further the automatic safety measure and isolation work of a secondary circuit are realized.
The area module 13 includes a current transformer, a voltage transformer, and a signal relay. The area module 13 may be a damaged section with an independent loop, and may be separately disposed from the terminal module 11 and the relay protection module 12 to perform independent safety measures, which is beneficial to performing safety measures.
Referring to fig. 1, the terminal box 1 further includes a plurality of safety measures covers 14, and the safety measures covers 14 correspond to the terminal modules 11 one to one and are used for sealing the terminal modules 11.
The safety measure cover 14 opens a signal loop which can break the terminal module 11, and the safety of detection of the terminal module 11 is improved. The safety cover 14 corresponding to the terminal module 11 to be detected can be opened only to detect the terminal module 11 in the part, so that the occurrence of protection failure caused by misconnection and misconnection can be prevented.
When the staff need be directed against when the current loop of terminal module 11 carries out safety measure operation, be different from integral terminal row in traditional terminal box, this embodiment of the application the maintenance return circuit of terminal box 1 distributes according to the operation object, forms a plurality of regional modules, a plurality of terminal module and a plurality of and continues to protect the module, does not relate to the maintenance object terminal module 11 is through setting up safety measure lid 14 shelters from, need not to hang the tablet and hang the insulating sticky tape and can operate to the specified region. For example, when the disconnecting link or the switchgear needs to be repaired, the safety cover 14 of the operation area corresponding to the mechanism is only required to be opened, and the signal circuit common to the terminal module 11 is disconnected.
Referring to fig. 1, the terminal box 1 further includes a control unit 15, a connection member 141 is disposed on the safety measure cover 14, and the connection member 141 is in signal connection with the control unit 15 and the terminal module 11.
When the safety cover 14 closes the operation portion of the terminal module 11, the connection member 141 signal-connects the control unit 15 and the terminal module 11 to form a signal loop, and when the safety cover 14 is opened to expose the operation portion of the terminal module 11, the connection member 141 moves to disconnect the signal connection of the control unit 15 and the terminal module 11. The opening and closing of the safety cover 14 can control the signal connection and disconnection of the terminal module 11 and the control unit 15.
Optionally, be provided with the rubber buffer on the safety measure lid 14, the rubber buffer with terminal module 11's operation portion cooperatees mutually, so that safety measure lid 14 can insulation sealing terminal module 11's operation portion can realize the closure of terminal module 11's operation portion is sheltered from to avoid staff's mistake to bump, misconnection, avoid simultaneously rainwater infiltration and lead to terminal module 11's life-span reduces, can realize even terminal module 11 does not receive external environment's influence completely, need not to maintain terminal module 11.
Optionally, one side of the safety measure cover 14 is hinged to the terminal box 1, and the other side of the safety measure cover is detachably connected to the terminal box 1 through a lock catch, so that the safety measure cover 14 is opened and closed, and the locking stability of the safety measure cover 14 in a closed state is achieved through the lock catch.
Through the detection piece 2 inserts or deviates from terminal module 11 is in order to realize the normal connection or the short circuit of terminal row connecting wire in terminal module 11, work as detection piece 2 does not insert the operation portion of terminal module 11, terminal module 11 is in normal condition, refer to fig. 3 and fig. 4, regional module 13 with relay protection module 12 all normally works, and the electric current passes through regional module 13, terminal module 11 and relay protection module 12, returns at last regional module 13 forms the return circuit. When detection is needed, as shown in fig. 5 and 6, the detection piece 2 is inserted into the terminal module 11, the first connection terminal 111 and the second connection terminal 112 are short-circuited, then the detection piece 2 is continuously inserted, the first connection terminal 111 and the third connection terminal 113 are disconnected, the second connection terminal 112 and the fourth connection terminal 114 are disconnected, so that one side of the relay protection module 12 is isolated from one side of the area module 13, the electric connection state between the third connection terminal 113 and the fourth connection terminal 114 can be directly detected through the detection piece 2, daily protection verification and transmission tests are performed, and therefore the test work of the secondary circuit is achieved. Alternatively, as shown in fig. 7, the first connection terminal 111 and the third connection terminal 113 may be disconnected, and the first connection terminal 111 and the third connection terminal 113 may be electrically connected through an ammeter to perform detection.
Referring to fig. 2, optionally, the first connection terminal 111 may include a first contact 1111, and the second connection terminal 112 may include a second contact 1121, and the detection member 2 electrically connects the first contact 1111 and the second contact 1121 to realize short-circuiting of the first connection terminal 111 and the second connection terminal 112.
First binding post 111 with second binding post 112 is the flexible piece and the binding post of buckling for the symmetry sets up, third binding post 113 with fourth binding post 114 is and just the binding post of buckling for the symmetry sets up.
After the detecting element 2 is inserted into the terminal module 11, the main body conductive part of the detecting element 2 first pushes the first contact 1111 and the second contact 1121 to be relatively far away and abuts against the first contact 1111 and the second contact 1121, so that the main body conductive part of the detecting element 2 is electrically connected with the first contact 1111 and the second contact 1121, and the first contact 1111 and the second contact 1121 have a tendency of elastic return to abut against the main body conductive part of the detecting element 2. Optionally, the contact surfaces of the first contact 1111 and the second contact 1121 with the conductive portion of the main body of the detection element 2 are flat surfaces, so as to improve the stability of electrical connection.
The first wire connection terminal 111 may further include a third contact 1112, the second wire connection terminal 112 may further include a fourth contact 1122, the third wire connection terminal 113 may include a fifth contact 1131 and a sixth contact 1132, and the fourth wire connection terminal 114 may include a seventh contact 1141 and an eighth contact 1142.
When the detection piece 2 is not inserted into the terminal module 11, the third contact 1112 is electrically connected to the fifth contact 1131, the fourth contact 1122 is electrically connected to the seventh contact 1141, and when detection is required, the detection piece 2 pushes the third connection terminal 113 and the fourth connection terminal 114, so that the sixth contact 1132 is electrically connected to the eighth contact 1142, the third contact 1112 is disconnected from the fifth contact 1131, and the fourth contact 1122 is disconnected from the seventh contact 1141, so that when the first connection terminal 111 is disconnected from the third connection terminal 113, and the second connection terminal 112 is disconnected from the fourth connection terminal 114, the electrical connection state between the third connection terminal 113 and the fourth connection terminal 114 is detected, and the relay protection module 12 is further detected.
After the detecting element 2 abuts against the first contact 1111 and the second contact 1121, the main body conductive portion of the detecting element 2 is inserted continuously, and the main body conductive portion of the detecting element 2 pushes the sixth contact 1132 and the eighth contact 1142 to be relatively far away from each other and abuts against the sixth contact 1132 and the eighth contact 1142, so that the main body conductive portion of the detecting element 2 is electrically connected with the sixth contact 1132 and the eighth contact 1142.
The sixth contact 1132 and the eighth contact 1142 have a tendency of elastic return to abut against the conductive portion of the main body of the detecting element 2, and meanwhile, in the process of relatively separating the sixth contact 1132 and the eighth contact 1142, the third connection terminal 113 and the fourth connection terminal 114 are driven to be partially deformed, so that the fifth contact 1131 is separated from the third contact 1112, and the seventh contact 1141 is separated from the fourth contact 1122, so as to break the electrical connection between the third contact 1112 and the fifth contact 1131, and simultaneously break the electrical connection between the fourth contact 1122 and the seventh contact 1141.
Optionally, a contact surface between the third contact 1112 and the fifth contact 1131, a contact point between the fourth contact 1122 and the seventh contact 1141, and a contact surface between the sixth contact 1132 and the eighth contact 1142 and the main conductive part of the test element 2 are flat surfaces, so as to improve stability of electrical connection.
It can be understood that the first connection terminal 111, the second connection terminal 112, the third connection terminal 113 and the fourth connection terminal 114 are elastic members, which can provide better contact pressure for the contacts on the connection terminals to ensure the excellence of the electrical connection.
Referring to fig. 2, the detecting member 2 includes an inserting portion 21, a clamping portion 22, and a handle 23; one end of the insertion portion 21 is fixedly connected to the clamping portion 22, the clamping portion 22 is clamped to the terminal module 11, and the handle 23 is fixedly connected to one side of the clamping portion 22, which is far away from the insertion portion 21.
Optionally, be provided with joint arch 221 on the joint portion 22, be provided with joint groove 116 on the terminal module 11, joint arch 221 with joint groove 116 joint is fixed, so that detection piece 2 inserts the operating portion of terminal module 11 to keep stable connection, in order to guarantee the security that detects, the setting of handle 23 does benefit to staff's detection control.
Referring to fig. 8, the terminal box 1 further includes a temperature measuring member 16, and the temperature measuring member 16 is fixedly connected to the first connection terminal 111, the second connection terminal 112, the third connection terminal 113, and the fourth connection terminal 114 through insulating patches, respectively.
The temperature measuring piece 16 senses the temperature of each wiring terminal to monitor the temperature of each wiring terminal and prevent the wiring terminals from being burnt out at high temperature.
Optionally, the secondary loop detection device may be connected to a host, and the host may receive the warning signal sent by the temperature measurement component 16 and send an alarm signal to warn monitoring personnel. For example, the host machine controls the acousto-optic warning device to emit at least one of sound and light signals to form an alarm signal, so that monitoring personnel can find the warning signal conveniently. Of course, the warning signal can also be displayed on the display screen, and can be stored, and the warning signal can be manually removed when the high-temperature problem of the wiring terminal is solved. When the temperature of the wiring terminal reaches a preset value, the temperature measuring part 16 sends out a warning signal and transmits the warning signal to the host, and the upper limit temperature of the wiring terminal can be set so as to ensure the timeliness of warning.
The application provides a secondary circuit detection device, which comprises a terminal box 1 and a detection piece 2; the terminal box 1 comprises a plurality of terminal modules 11, a plurality of relay protection modules 12 and a plurality of area modules 13; the relay protection module 12 is electrically connected with the area module 13 through the terminal module 11; the detection piece 2 is inserted in the terminal module 11 and used for short-circuiting the area module 13 and electrically connecting the relay protection module 12 so as to detect the relay protection module 12. Adopt above-mentioned device, detection piece 2 disect insertion accomplish in the terminal module 11 short circuit and disconnection between the terminal in the terminal module 11 need not to disassemble and recover after disassembling the circuit of terminal box 1 inside, realizes the automatic safety measure and the isolation work of secondary circuit, avoids staff and check out test set condition to influence the cable and connects the quality, has characteristics such as safe in utilization, convenient, high-efficient.
Based on the above-disclosed secondary circuit detection device, the embodiment of the present application further discloses a circuit operation intrinsic safety method applied to the above-described device, and referring to fig. 9, the circuit operation intrinsic safety method includes:
step S11, preparing a terminal box 1, where the terminal box 1 includes a plurality of terminal modules 11, a plurality of relay protection modules 12, and a plurality of area modules 13, where the terminal modules 11 include a first connection terminal 111, a second connection terminal 112, a third connection terminal 113, and a fourth connection terminal 114; the first connection terminal 111 and the second connection terminal 112 are electrically connected to the area module 13; the third connection terminal 113 and the fourth connection terminal 114 are both electrically connected to the relay protection module 12; the first connection terminal 111 is movably connected with the third connection terminal 113, and the second connection terminal 112 is movably connected with the fourth connection terminal 114;
step S12, electrically connecting the first connection terminal 111 and the second connection terminal 112;
step S13, disconnecting the first connection terminal 111 and the third connection terminal 113, and disconnecting the second connection terminal 112 and the fourth connection terminal 114;
step S14, detecting an electrical connection state between the third connection terminal 113 and the fourth connection terminal 114 to detect the relay protection module 12.
In the embodiment of the present application, the embodiment of the secondary loop detection device portion and the embodiment of the loop operation intrinsic safety method portion may be referred to each other, and are not described herein again.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (10)
1. A secondary circuit detection device, comprising: a terminal box (1) and a detection piece (2);
the terminal box (1) comprises a plurality of terminal modules (11), a plurality of relay protection modules (12) and a plurality of area modules (13); the relay protection module (12) is electrically connected with the area module (13) through the terminal module (11);
the detection piece (2) is connected with the terminal module (11) in an inserting mode and used for short-circuiting the area module (13) and electrically connecting the relay protection module (12) so as to detect the relay protection module (12).
2. The secondary circuit detection device according to claim 1, wherein the terminal module (11) includes a first connection terminal (111), a second connection terminal (112), a third connection terminal (113), and a fourth connection terminal (114);
the first connection terminal (111) and the second connection terminal (112) are both electrically connected to the area module (13); the third wiring terminal (113) and the fourth wiring terminal (114) are electrically connected with the relay protection module (12); the first connecting terminal (111) is movably connected with the third connecting terminal (113), and the second connecting terminal (112) is movably connected with the fourth connecting terminal (114).
3. The secondary circuit detection device according to claim 2, characterized in that the terminal module (11) is provided with a plug hole (115);
the detection piece (2) penetrates through the plug hole (115) and is used for movably connecting the first wiring terminal (111) and the second wiring terminal (112), movably connecting the third wiring terminal (113) and the fourth wiring terminal (114), disconnecting the first wiring terminal (111) and the third wiring terminal (113) and disconnecting the second wiring terminal (112) and the fourth wiring terminal (114).
4. The secondary loop detection device according to claim 3, wherein the zone module (13) comprises a current transformer, a voltage transformer and a signal relay.
5. The secondary circuit detection device according to claim 1, wherein the terminal box (1) further comprises a plurality of safety covers (14), the safety covers (14) corresponding to the terminal modules (11) one to one for closing the terminal modules (11).
6. The secondary loop detection device according to claim 5, wherein the terminal box (1) further comprises a control unit (15), a connecting piece (141) is arranged on the safety measure cover (14), and the connecting piece (141) is in signal connection with the control unit (15) and the terminal module (11).
7. The secondary circuit detection device according to claim 2, wherein the first connection terminal (111) and the second connection terminal (112) are both elastic members and are symmetrically arranged bent connection terminals, and the third connection terminal (113) and the fourth connection terminal (114) are both symmetrically arranged bent connection terminals.
8. The secondary circuit detection device according to claim 2, wherein the detection member (2) comprises a plug-in portion (21), a clip portion (22) and a handle (23); one end of the inserting portion (21) is fixedly connected with the clamping portion (22), the clamping portion (22) is clamped with the terminal module (11), and the handle (23) is fixedly connected to one side, far away from the inserting portion (21), of the clamping portion (22).
9. The secondary circuit detection device according to claim 8, wherein the terminal box (1) further comprises a temperature measuring piece (16), and the temperature measuring piece (16) is fixedly connected with the first connection terminal (111), the second connection terminal (112), the third connection terminal (113) and the fourth connection terminal (114) through insulating patches.
10. A loop operation intrinsic safety method applied to the secondary loop detection apparatus of claims 1-9, comprising:
preparing a terminal box (1), wherein the terminal box (1) comprises a plurality of terminal modules (11), a plurality of relay protection modules (12) and a plurality of area modules (13), and the terminal modules (11) comprise a first wiring terminal (111), a second wiring terminal (112), a third wiring terminal (113) and a fourth wiring terminal (114); the first connection terminal (111) and the second connection terminal (112) are both electrically connected to the area module (13); the third wiring terminal (113) and the fourth wiring terminal (114) are electrically connected with the relay protection module (12); the first connecting terminal (111) is movably connected with the third connecting terminal (113), and the second connecting terminal (112) is movably connected with the fourth connecting terminal (114);
electrically connecting the first connection terminal (111) and the second connection terminal (112);
disconnecting the first connection terminal (111) and the third connection terminal (113), and disconnecting the second connection terminal (112) and the fourth connection terminal (114);
and detecting the electric connection state between the third wiring terminal (113) and the fourth wiring terminal (114) so as to detect the relay protection module (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341978.6A CN112444701A (en) | 2020-11-25 | 2020-11-25 | Secondary circuit detection device and circuit operation intrinsic safety method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341978.6A CN112444701A (en) | 2020-11-25 | 2020-11-25 | Secondary circuit detection device and circuit operation intrinsic safety method |
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| CN112444701A true CN112444701A (en) | 2021-03-05 |
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| CN202011341978.6A Pending CN112444701A (en) | 2020-11-25 | 2020-11-25 | Secondary circuit detection device and circuit operation intrinsic safety method |
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| CN202695996U (en) * | 2012-06-14 | 2013-01-23 | 国家电网公司 | Terminal box cover |
| CN206223821U (en) * | 2016-11-22 | 2017-06-06 | 国网浙江省电力公司绍兴供电公司 | A kind of integration peace arranges test connecting box |
| CN110440938A (en) * | 2019-09-04 | 2019-11-12 | 云南电网有限责任公司昆明供电局 | A kind of terminal box and its application method with temp sensing function |
| CN110456113A (en) * | 2019-09-18 | 2019-11-15 | 云南电网有限责任公司电力科学研究院 | A kind of plug-in electric current essential safety terminal |
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Application publication date: 20210305 |