CN207096281U - A New Type of Failure Protection Test Terminal - Google Patents

Abstract

The utility model belongs to the technical field of the terminal device, a novel failure protection test terminal is related to. The power supply device comprises an insulating shell, a starting failure output end, a failure starting input end and a connecting mechanism; the starting failure output end, the failure starting input end and the connecting mechanism are arranged in the insulating shell; the starting failure output end is connected with the failure starting input end through a connecting mechanism; the connecting mechanism is connected with the starting failure output end and the failure starting input end through a connecting piece; the connecting mechanism is provided with a U-shaped guide rail, the insulating shell is provided with a limiting device, and the connecting device is connected with the limiting device in a sliding mode through the U-shaped guide rail. The utility model provides a novel protection failure test terminal, through setting up U type guide rail and stop device, slide the coupling mechanism along U type guide rail, make the coupling mechanism accomplish the connection and disconnection operation of test terminal; on the other hand, the disconnection and connection functions of the test terminal are realized through the connection mechanism, so that the operation is more convenient, and meanwhile, safety accidents caused by misoperation are avoided.

Description

A New Type of Failure Protection Test Terminal

technical field

The utility model belongs to the technical field of terminal devices, and more specifically relates to a novel failure protection test terminal.

Background technique

The voltage level of 220kV and above in the power system is equipped with failure protection, and several sets of related protection screens are designed with output contacts for starting failure protection. , when a certain set of relevant protective screens needs to be tested for the function of starting failure protection, in most cases, the failure protection cannot be shut down to cooperate with the test. Test whether the contact action of its output start-up failure protection is correct in the relevant protection screen. This kind of wiring disconnection operation is generally carried out at the wiring terminal.

In the prior art, when operating the failure protection test terminal, it is necessary to first confirm the position of the failure terminal of the protection screen to be tested according to the drawing, disconnect the control cable on the failure protection screen side of the connection terminal, and use an insulating Temporarily wrap the conductor part of the disconnected control cable terminal with tape. When testing, you need to use a multimeter to confirm that there is no voltage at the disconnected failure protection test terminal, and then start the failure protection function test of the relevant protection. Test After the completion, it is necessary to remove the insulating tape, and then connect the cable on the side of the failure protection screen; the operation of this failure protection test terminal is complicated, and during the operation, it is easy to make operational mistakes, such as poor connection of wiring, disconnected wires, etc. Wrong cables, broken cables not wrapped properly, etc., and these mistakes can easily cause personal safety accidents. When the conventional start-up failure test terminal is applied to the out-of-circuit circuit that needs to be debugged, such as the failure start-up circuit and the main transformer releasing the complex pressure lockout, due to its single function, only by disconnecting the cable connection can the safety technical measures in the failure circuit test process be met. , and stitch removal will inevitably lead to a series of risks. These dangerous points are completely dependent on the subjective control of the staff, and the probability of making mistakes is high, and once it happens, the consequences will be serious. There are major safety hazards, which cannot meet the requirements of safe production, and it is necessary to develop a new structure of terminal blocks.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a test terminal with simple structure and convenient operation.

In order to solve the above problems, the technical solution provided by the utility model is: a new type of failure protection test terminal, which includes an insulating shell, a start-up failure output terminal, a failure start-up input terminal and a connection mechanism; the start-up failure output terminal, The failure start input terminal and the connection mechanism are arranged in the insulating shell; the start failure output terminal and the failure start input terminal are movably connected through the connection mechanism; the connection mechanism is connected to the start failure output terminal and the failure start input through the connecting piece end connection; the connecting mechanism is provided with a U-shaped guide rail, and the insulating shell is provided with a limiting device, and the connecting device is slidably connected to the limiting device through the U-shaped guide rail.

In the normal working state of the utility model, the cable connection holes on the failure start output end and the failure start input end are all connected to the cable, and the test terminal is in a charged state, wherein the locking bolt on the connection mechanism is connected to the failure start output end. Cooperate with the lock nut on the failure start input end, and fix the connection mechanism tightly on the start failure output end and the failure start input end, the test terminal and the external cable form a closed loop; when testing, loosen the connection mechanism The locking bolt, the sliding U-shaped guide rail drives the entire connecting mechanism to move, slide the connecting mechanism to the failure start input end, and connect the limit nut to the locking bolt, fix the connection mechanism on the failure start input end, so that the test The terminal remains disconnected.

Further, the connecting mechanism is also provided with an insulating handle, and the insulating handle is fixedly connected with the connecting mechanism. On the one hand, the insulating handle is provided to facilitate operation and avoid electric shock; on the other hand, the test terminal of the present utility model can be distinguished from other test terminals for easy identification.

Further, the connecting piece includes a lock bolt and a lock nut, the lock bolt is passed through the connection mechanism, and the lock nut is respectively arranged on the start failure output end and the failure start input end, The locking bolt is matched with the locking nut, and the upper part of the locking bolt is an insulating layer structure. Through the cooperation of the locking bolt and the screw lock nut, the connecting mechanism is more closely connected with the starting failure output end and the failure starting input end, and problems such as poor contact are avoided.

Further, both the start-failure output terminal and the failure-start input terminal are provided with cable connection holes. The cable connection hole is provided to facilitate the connection between the test terminal and the cable, the cable connection hole on the start failure output end is connected to the relevant protection side, and the cable connection hole on the failure start input end is connected to the failure protection side.

Further, the end of the start failure output end away from the failure start input end is provided with a first crimping bolt and a first crimping nut; the end of the failure start input end far away from the start failure output end is provided with a second crimping bolt With the second crimping nut, the upper part of the first crimping bolt and the second crimping bolt is an insulating layer structure. The first crimping bolt on the output end of the failure to start cooperates with the first crimping nut, which is used to compress and fix the connection of the relevant protection side cables; the second crimping bolt on the failure start input end cooperates with the second crimping nut , used to compress and fix the cable connection on the failure protection side. In addition, an insulating structure is set to cover the live parts of the failure start input terminal, which can effectively prevent the operator from accidentally touching the conductor during operation and causing electric shock.

Further, the tops of the locking bolts, the first crimping bolts, the second crimping bolts and the connecting mechanism are all provided with insulating structures. An insulating structure is provided on the top of the conductor part of the test terminal, which can effectively prevent the operator from accidentally touching the conductor during operation and causing electric shock.

Further, a limit nut is also provided on the failure start input end, and the limit nut cooperates with the locking bolt when the connection mechanism is disconnected from the start failure output end. When the test terminal is in the connected state, the connection mechanism is connected to the failure start output terminal and the failure start input terminal respectively, and the limit device is located at the end of the U-shaped guide rail close to the failure start input terminal; Slide along the U-shaped guide rail until the limit device is at the end of the U-shaped guide rail close to the output end of the start-up failure. Cooperate with the bit nut, tighten the locking bolt, fix the connecting mechanism on the upper end of the failure start input end, and keep it in the disconnected state.

Compared with the prior art, the beneficial effect is: a new type of protection failure test terminal provided by the utility model, by setting a U-shaped guide rail and a limit device, by sliding the connection mechanism along the U-shaped guide rail, the connection mechanism is completed. The connection and disconnection operation of the test terminal; on the other hand, the disconnection and connection function of the test terminal is realized through the connection mechanism, which makes the operation more convenient, does not need to disconnect the cable, and also avoids safety accidents caused by misoperation .

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a structural schematic diagram of the connection mechanism of the present invention.

Fig. 3 is a structural schematic view of the utility model when the connecting mechanism is removed.

Fig. 4 is a schematic diagram of the first state of the utility model.

Fig. 5 is a schematic diagram of the second state of the present invention.

Fig. 6 is a schematic diagram of the third state of the present invention.

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

As shown in Figure 1, Figure 2, and Figure 3, a new type of failure protection test terminal, including an insulating shell 1, a start-up failure output terminal 2, a failure start-up input terminal 3 and a connection mechanism 4; a start-up failure output terminal 2, The failure start input terminal 3 and the connection mechanism 4 are arranged in the insulating shell 1; the start failure output terminal 2 and the failure start input terminal 3 are movably connected through the connection mechanism 4; the connection mechanism 4 is connected with the start failure output terminal 2 and the failure through a connector The start input terminal 3 is connected; the connecting mechanism 4 is provided with a U-shaped guide rail 5 , and the insulating casing 1 is provided with a limiting device 6 , and the connecting device is slidably connected to the limiting device 6 through the U-shaped guide rail 5 .

In some embodiments, when the utility model is in a normal working state, the cable connection holes on the start failure output terminal 2 and the failure start input terminal 3 are all connected to the cable, and the test terminal is in a charged state, wherein the connection mechanism 4 The locking bolt 8 on the upper part cooperates with the locking nut 9 on the starting failure output terminal 2 and the failure starting input terminal 3, and the connecting mechanism 4 is tightly fixed on the starting failure output terminal 2 and the failure starting input terminal 3. The test terminal and External cables form a closed loop; when testing, loosen the locking bolt 8 on the connecting mechanism 4, slide the U-shaped guide rail 5 to drive the entire connecting mechanism 4 to move, slide the connecting mechanism 4 to the failure start input terminal 3, and Connect the limit nut 10 with the locking bolt 8, fix the connection mechanism 4 on the failure start input end 3, and keep the test terminal in a disconnected state.

Specifically, an insulating handle 7 is further provided on the connecting mechanism 4 , and the insulating handle 7 is fixedly connected with the connecting mechanism 4 . On the one hand, the insulating handle 7 is provided to facilitate operation and avoid electric shock; on the other hand, the test terminal of the present utility model can be distinguished from other test terminals for easy identification.

Wherein, the connector includes a locking bolt 8 and a locking nut 9, the locking bolt 8 is penetrated on the connecting mechanism 4, and the locking nut 9 is respectively arranged on the starting failure output end 2 and the failure starting input end 3, the described The locking bolt 8 cooperates with the locking nut 9, and the upper part of the locking bolt 8 is an insulating layer structure. Through the cooperation of the locking bolt 8 and the locking nut 9, the connecting mechanism 4 is more closely connected with the starting failure output terminal 2 and the failure starting input terminal 3, so as to avoid problems such as poor contact.

In addition, the start-failure output terminal 2 and the failure-start input terminal 3 are provided with cable connection holes. The cable connection hole is provided to facilitate the connection between the test terminal and the cable. The cable connection hole on the start failure output terminal 2 is connected to the relevant protection side, and the cable connection hole on the failure start input terminal 3 is connected to the failure protection side.

Wherein, the end of the start failure output terminal 2 away from the failure start input terminal 3 is provided with a first crimping bolt 12 and the first crimping nut 11; Bolt 14 and the second crimping nut 13, the upper part of the first crimping bolt 12 and the second crimping bolt 14 is an insulating layer structure. The first crimping bolt 12 on the start failure output end 2 cooperates with the first crimping nut 11 to press and fix the connection of the relevant protection side cables; Two crimping nuts 13 are used to press and fix the cable connection on the failure protection side. In addition, an insulating structure is set to cover the live parts of the failure start input end, which can effectively prevent the operator from accidentally touching the conductor during operation and causing electric shock. .

In addition, the tops of the locking bolts 8 , the first crimping bolts 12 , the second crimping bolts 14 and the connecting mechanism 4 are all provided with insulating structures. An insulating structure is provided on the top of the conductor part of the test terminal, which can effectively prevent the operator from accidentally touching the conductor during operation and causing electric shock.

As shown in FIG. 6 , a limit nut 10 is also provided on the failure start input end 3 , and the limit nut 10 cooperates with the locking bolt 8 when the connection mechanism 4 is disconnected from the start failure output end 2 . When the test terminal is in the connected state, the connection mechanism 4 is connected to the failure start output terminal 2 and the failure start input terminal 3 respectively, and the limit device 6 is located at the end of the U-shaped guide rail 5 close to the failure start input terminal 3; when testing, unscrew Lock the bolt 8, and slide the connecting mechanism 4 along the U-shaped guide rail 5 until the limit device 6 is at the end of the U-shaped guide rail 5 close to the start-failure output terminal 2. At this time, the connection mechanism 4 is disconnected from the start-failure output terminal 2 , the connection mechanism 4 is at the upper end of the failure start input end 3, the locking bolt 8 is matched with the limit nut 10, the locking bolt 8 is tightened, the connection mechanism 4 is fixed at the upper end of the failure start input end 3, and the disconnected state is maintained.

Operating principle or process:

As shown in Figure 1, it is the normal working state of the test terminal of the utility model. At this time, the cable connection ports of the start failure output terminal 2 and the failure start input terminal 3 are connected with cables, and the circuit where the test terminal is located is in a charged state.

As shown in Figure 6, it is the connection state of the test terminal end of the utility model. Although the cable is still connected to the wiring port at this time, the test terminal is in a disconnected state, and the connection mechanism 4 is located above the failure start input terminal 3. The failure start input terminal 3 is covered, and the upper surface of the connection device is provided with an insulating structure, which can effectively prevent the operator from accidentally touching the conductor and causing electric shock; on the other hand, at this time, the nut on the start failure output terminal 2 is exposed, and the nut can be As a test hole, it is connected with the test line for testing, which is convenient for operation.

(1) According to the drawing, confirm the position of the terminal that needs to be debugged, such as the starting circuit of the protection screen to be tested, the release of the re-voltage lockout of the main transformer, or the joint trip of other circuit breakers. After the terminal is tested by the utility model, the recognition degree is increased and it is easy to find;

(2) Loosen the locking bolt 8 on the test terminal connecting mechanism 4, and then lift the connecting mechanism 4 upward to disengage the locking bolt 8 and the locking nut 9 of the connecting device, as shown in Figure 4;

(3) Move the test terminal connection mechanism 4 towards the failure start input terminal 3 until the limit device 6 is at the end of the U-shaped guide rail 5 close to the start failure output terminal 2, that is, the limit device 6 is located on the U-shaped guide rail 5 close to the start The bottom end of the failure output terminal 2, as shown in Figure 5, at this time, the locking bolt 8 on the test terminal connection mechanism 4 close to the start failure output terminal 2 is aligned with the limit nut 10 on the failure start input terminal 3;

(4) As shown in Figure 6, tighten the locking bolt 8 and the limit nut 10 to keep the connecting mechanism 4 in the disconnected state; at this time, the locking nut 9 on the output end 2 of the failure to start is exposed, and the test operation;

(5) First use the DC voltage file of the multimeter to confirm that there is no voltage on the 2 side of the start-up failure output terminal of the disconnected test terminal, and then start the relevant protection function test. At this time, pass the nut on the 2 side of the start-up failure output terminal of the test terminal Connect with the test test line for testing, which is convenient for staff to identify and use;

(6) After the test is over, first use the DC voltage range of the multimeter to confirm that there is no voltage on the side 2 of the start-up failure output terminal of the disconnected test terminal, loosen the locking bolt 8 on the connection mechanism 4 from the limit nut 10, and connect the The mechanism 4 is lifted upwards, and slides along the U-shaped guide rail 5 to the direction of the start failure output end 2 until the limit device 6 is at the bottom end of the U-shaped guide rail 5 close to the failure start input end 3. At this time, the locking mechanism on the connecting device The bolt 8 is just in one-to-one correspondence with the locking nut 9 on the start failure output terminal 2 and the failure start input terminal 3;

(7) Tighten the locking bolts 8 on the connection mechanism 4 one by one, as shown in Figure 1, the connection between the connection mechanism 4 and the start failure output terminal 2 and the failure start input terminal 3 is completed. At this time, the test terminal returns to the connection state. The test is over.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (7)

1. A new type of failure protection test terminal, characterized in that it includes an insulating shell (1), a failure start output (2), a failure start input (3) and a connection mechanism (4); the start failure output Terminal (2), failure start input terminal (3) and connecting mechanism (4) are set in the insulating shell (1); said start failure output terminal (2) and failure start input terminal (3) pass through the connection mechanism (4 ) is movable connected; the connecting mechanism (4) is connected with the starting failure output terminal (2) and the failure starting input terminal (3) through the connecting piece; the connecting mechanism (4) is provided with a U-shaped guide rail ( 5), the insulating casing (1) is provided with a limiting device (6), and the connecting mechanism (4) is slidably connected to the limiting device (6) through a U-shaped guide rail (5). 2. A new type of failure protection test terminal according to claim 1, characterized in that the connection mechanism (4) is also provided with an insulating handle (7), and the insulating handle (7) is connected to the Mechanism (4) is fixedly connected. 3. A new type of failure protection test terminal according to claim 1, characterized in that, the connecting piece includes a locking bolt (8) and a locking nut (9), and the locking bolt (8) ) on the connection mechanism (4), the nuts are respectively arranged on the failure start output end (2) and the failure start input end (3), and the locking bolt (8) cooperates with the nut; The upper part of the locking bolt (8) is an insulating layer structure. 4 . A new type of failure protection test terminal according to claim 3 , characterized in that, both the start-up failure output terminal ( 2 ) and the failure-start input terminal ( 3 ) are provided with cable connection holes. 5. A new type of failure protection test terminal according to claim 4, characterized in that, the end of the start failure output terminal (2) far away from the failure start input terminal (3) is provided with a first crimping bolt ( 12) and the first crimping nut (11); the end of the failure start input (3) far away from the start failure output (2) is provided with a second crimping bolt (14) and a second crimping nut (13 ); the upper part of the first crimping bolt (12) and the second crimping bolt (14) is an insulating layer structure. 6. A new type of failure protection test terminal according to claim 5, characterized in that the locking bolt (8), the first crimping bolt (12), the second crimping bolt (14) and The tops of the connecting mechanisms (4) are provided with insulating structures. 7. A new type of failure protection test terminal according to claim 6, characterized in that a limit nut (10) is also provided on the failure start input end (3), and the limit nut (10 ) cooperate with the locking bolt (8) when the connection mechanism (4) is disconnected from the start-failure output terminal (2).