Test trolley loaded with analog circuit breaker

Abstract

The utility model discloses a test dolly loaded with an analog circuit breaker, the test dolly is internally provided with an analog circuit breaker, a three-in-one aviation plug cable and an ADMU module, the three-in-one aviation plug cable is connected to the analog circuit breaker through a fork-shaped crimping terminal, and the analog circuit breaker and the ADMU module are electrically connected to a terminal IO board; an aviation plug female head of the three-in-one aviation plug cable is arranged on the outer side of the test trolley shell, the aviation plug cable is wound on a wire wheel, the wire wheel is connected with a dowel bar, a take-up handle is arranged at the top end of the dowel bar, and a fork-shaped crimping terminal of the three-in-one aviation plug cable is connected to the analog circuit breaker. When the FTU is upgraded or maintained on site, the FTU function detection can be completed by replacing the FTU side aviation plug with the tool aviation plug without disconnecting. The device is convenient to carry and suitable for field detection; a three-in-one aviation plug cable is provided, and all standardized interface FTUs (Feeder Terminal Units) including an electronic type, an electromagnetic type and a digital type are met; the FTU state quantity monitoring device can also detect electronic, electromagnetic and digital FTU state quantity monitoring functions at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power distribution, in particular to a test trolley with analog circuit breaker. BACKGROUND

[0002] With the increasing perfection of power distribution network technology, the role of feeder terminal (FTU) is becoming more and more important. FTU is a terminal device integrating remote control, remote signaling and remote measurement with 10kV pole-mounted circuit breaker. In the development and on-site debugging of various functions of FTU, it is often necessary to simulate circuit breakers or relay protection devices.

[0003] Although using pole-mounted circuit breakers can most realistically restore the application scenario, they are not convenient to carry due to their weight. Although relay protection devices are powerful and can effectively support the implementation of various logic functions, they are extremely high in cost and time-consuming in environment setup.

[0004] In view of the above problems, many manufacturers have made many types of analog circuit breakers based on single-chip microcomputers. This design has high precision, generally uses box packaging, and does not provide connection cables. Therefore, it is suitable for precise testing needs of laboratories, but it is not suitable for on-site work. On the one hand, its circuit structure, function is complex, power consumption, cost is high, also not convenient transportation; on the other hand, it is not designed according to the standardized FTU file interface, the general ability is low, the field configuration is complicated. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a test trolley with analog circuit breaker, according to the field demand, optimize the circuit structure of analog circuit breaker, provide three-in-one aviation plug cable, realize the detection of FTU without disconnecting the power distribution line.

[0006] The technical scheme adopted by the utility model to solve the existing problems is:

[0007] A test trolley with analog circuit breaker, including test trolley main part, test trolley is provided with analog circuit breaker, three-in-one aviation plug cable 1 and ADMU module, three-in-one aviation plug cable 1 is connected to analog circuit breaker through fork compression terminal 144, analog circuit breaker and ADMU module are electrically connected to terminal IO board;The aviation plug female head of three-in-one aviation plug cable 1 is arranged on the outside of test trolley shell, aviation plug cable 14 is wound on line wheel 214, line wheel 214 is connected with force transmission rod 213, the top end of force transmission rod is provided with take-up handle 215, and fork compression terminal 144 of three-in-one aviation plug cable is connected to analog circuit breaker.

[0008] Preferably, the three-in-one navigation plug cable comprises a digital navigation plug female head 11, an electromagnetic navigation plug female head 112 and an electronic navigation plug female head 13, which are sequentially connected with a navigation plug nut 12, a navigation plug cable connector 113 and a cable 141, the digital navigation plug female head 11, the electromagnetic navigation plug female head 12 and the electronic navigation plug female head 13 are connected with a three-in-one-out connector, the electromagnetic navigation plug female head 12 and the electronic navigation plug female head 13 are connected with a two-in-one-out connector, the output lines of the three-in-one-out connector and the two-in-one-out connector and the output lines of the navigation plug female heads form a navigation plug cable, and a fork type crimp terminal 144 is connected at the end of the navigation plug cable.

[0009] Preferably, the analog circuit breaker comprises a closing button S1, a closing relay K1, a 24V DC power supply DC1, a remote closing signal terminal interface IN1, a closing position signal output terminal interface OUT1, a closing position signal lamp L1, an opening button S2, an opening relay K2, a 5V DC power supply DC2, a remote opening signal terminal interface IN2, an opening position signal output terminal interface OUT2 and an opening position signal lamp L2. The normally closed end of the closing button S1 is sequentially connected with the normally closed contact K1-4 of the closing relay, the 24V DC power supply DC1-1, the opening relay coil K2-1, the normally open end of the opening button S2 to the normally closed end of the closing button S1 to form a closed loop, the remote opening signal terminal interface IN2 is connected with the opening relay coil K2-1 in parallel, and the self-locking contact K2-2 of the opening relay is connected with the normally open end of the opening button S2 in parallel. The normally open end of the closing button S1 is sequentially connected with the opening relay coil K1-1, the normally closed contact K2-4 of the opening relay, the 24V DC power supply DC1-2, the normally closed end of the opening button S2 to the normally open end of the closing button S1 to form a closed loop, the self-locking contact K1-2 of the closing relay is connected with the normally open end of the closing button S1 in parallel, and the remote closing signal terminal interface IN1 is connected with the closing relay coil K1-1 in parallel.

[0010] The 5V DC power supply DC2-1 is connected with the closing position signal lamp L1 and the closing position signal output terminal interface OUT1 in parallel after being connected with the normally open contact K1-3 of the closing relay in series.

[0011] The 5V DC power supply DC2-2 is connected with the opening position signal lamp L2 and the opening position signal output terminal interface OUT2 in parallel after being connected with the normally open contact K2-3 of the opening relay in series.

[0012] The remote closing signal terminal interface IN1 and the remote opening signal terminal interface IN2 are connected with the input ports of a terminal IO board, and the closing position signal output terminal interface OUT1 and the opening position signal output terminal interface OUT2 are connected with the output ports of the terminal IO board.

[0013] Preferably, the test trolley body is provided with a stretchable push-pull handle 24, and the test trolley is internally provided with a corresponding push-pull handle storage area 242.

[0014] Preferably, the test trolley is provided with a box handle 241 fixedly connected to the trolley body 2.

[0015] Preferably, the test trolley is provided with a plug female head storage area 211, and the storage area is provided with a movable door connected by a hinge. The plug female head storage area 211 is internally provided with a through hole, and the plug female head cable passes through the through hole.

[0016] Preferably, the bottom of the test trolley is provided with a moving device 23, including a rubber tire 231, a hub 232 and a bearing 233.

[0017] Preferably, the inside of the test trolley is provided with a reserved tool box 25 above the line wheel 214.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] (1) When upgrading or repairing the FTU on site, the FTU side plug is replaced with a tool plug to complete the FTU function detection.

[0020] (2) Convenient to carry, suitable for on-site detection; provides a three-in-one plug cable to meet all standardized interface FTUs (electronic, electromagnetic and digital)

[0021] (3) Can detect the state quantity monitoring function of electronic, electromagnetic and digital FTUs at the same time.

[0022] (4) The trolley is loaded with a simulated circuit breaker, including a closing button, a closing relay, a closing position indicator, an opening button, an opening relay and an opening position indicator, which simulates the closing and opening functions of the circuit breaker and the closing and opening detection functions. The circuit structure of the simulated circuit breaker is simplified, the single-path button is replaced by a double-path button, the closing and opening functions are realized by cooperating with the opening relay and the closing relay, and the use of auxiliary relays is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described below in combination with the drawings and embodiments.

[0024] Figure 1 The utility model is a test trolley structure diagram loaded with a simulated circuit breaker,

[0025] Figure 2 The utility model is a three-in-one plug cable plane structure diagram loaded with a simulated circuit breaker,

[0026] Figure 3The utility model relates to a simulation circuit breaker main circuit schematic diagram loaded with simulation circuit breaker,

[0027] Figure 4 The utility model relates to a simulation circuit breaker output terminal peripheral circuit schematic diagram loaded with simulation circuit breaker,

[0028] In the figure: 1 three-in-one navigation plug cable, 11 digital navigation plug female head, 111 positioning clamping groove, 112 navigation plug dedicated nut, 113 navigation plug head cable connector, 12 electromagnetic navigation plug female head, 13 electronic navigation plug female head, 14 navigation plug cable, 141 cable, 142 three-in-one connector, 143 two-in-one connector, 144 fork type crimping terminal; 2 trolley body, 21 navigation plug cable storage device, 211 navigation plug female head storage area, 212 hinge, 213 force transmission rod, 214 wire wheel, 215 take-up handle; 22 simulation circuit breaker and ADMU module assembly area, 23 wheel, 231 rubber tire, 232 hub, 233 bearing, 24 stretchable push-pull handle, 241 box body handle, 242 push-pull handle storage area, 25 reserved tool box. DETAILED DESCRIPTION

[0029] As used in the specification and claims, certain terminology is used to refer to certain components. Those of ordinary skill in the art will appreciate that hardware manufacturers can use different names for the same component. The specification and claims do not differentiate between names used for the same component. Rather, the specification and claims differentiate between components on the basis of the functionality served by the components. As used throughout the specification and claims, "comprising" is to be interpreted as "including but not limited to." "Substantially" means within acceptable manufacturing tolerances, and those of ordinary skill in the art will appreciate that the technical problem can be solved within a certain tolerance, and the technical effect can be substantially achieved.

[0030] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "back", "left", "right", "flat" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In the utility model, unless another definite provision and limitation, the term "installation", "linkage", "connection", "fixation" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside.For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning of the utility model.

[0032] The best embodiment of the utility model is a test trolley loaded with analog circuit breaker, which will be described in detail below in combination with the drawings.

[0033] According to Figure 1 The three-in-one aviation plug cable will be described in detail below.

[0034] The three-in-one aviation plug cable comprises a digital aviation plug female connector 11, an electromagnetic aviation plug female connector 12 and an electronic aviation plug female connector 13, which are sequentially connected with an aviation plug dedicated nut 12, an aviation plug cable connector 113 and a cable 141, the digital aviation plug female connector 11, the electromagnetic aviation plug female connector 12 and the electronic aviation plug female connector 13 are connected with a three-in-one connector, the electromagnetic aviation plug female connector 12 and the electronic aviation plug female connector 13 are connected with a two-in-one connector, and the output lines of the three-in-one connector and the two-in-one connector and the output lines of the aviation plug female connectors form an aviation plug cable, the two-in-one connector and the three-in-one connector are used to realize multiplexing of channels, and a fork-shaped crimping terminal 144 is connected at the end.

[0035] The three-in-one connector has three input ends and one output end, and the two-in-one connector has two input ends and one output end.

[0036] According to Figure 2 The utility model discloses a test trolley loaded with analog circuit breaker, and particularly relates to the following:

[0037] The test trolley body is provided with a simulated circuit breaker, a three-in-one aviation plug cable and an ADMU module. The aviation plug female head of the three-in-one aviation plug cable is arranged on the outside of the test trolley shell, the cable is wound on the wire reel 214, the wire reel 214 is connected with the force transmission rod 213, and the top end of the force transmission rod is provided with a take-up handle 215. The stretch-out wire and the rocker-type take-up can greatly reduce the storage space. The fork-type crimping terminal 144 of the three-in-one aviation plug cable is connected to the simulated circuit breaker 22, and the crimping type and the plug type are provided as the connection mode of the end of the aviation plug cable and the board card. The crimping type is directly crimped to the simulated circuit breaker circuit. The plug type is crimped to the adapter board card in the shell first, and then plugged into the simulated circuit breaker board card through the adapter board card. The plurality of connection modes improve the flexibility of the simulated circuit breaker, and the appropriate wiring mode can be selected according to the needs, and more simulated circuit breaker circuit boards can be adapted.

[0038] The test trolley is also provided with a stretchable push-pull handle 24, a box handle 241, a moving device 23 including a rubber tire 231, a hub 232 and a bearing 233, which can conveniently move the whole trolley, and the stretchable push-pull handle 24 is also provided with a storage function, which is pulled out when used, and is pushed back when used, which is convenient for storage. The trolley is also provided with a reserved tool box 25 for convenient tool access.

[0039] As shown in Figures 3-4 The simulated circuit breaker includes a closing button S1, a closing relay K1, a 24V DC power supply DC1, a remote closing signal terminal interface IN1, a closing signal output terminal interface OUT1, a closing signal lamp L1, an opening button S2, an opening relay K2, a 5V DC power supply DC2, a remote opening signal terminal interface IN2, an opening signal output terminal interface OUT2 and an opening signal lamp L2. The remote closing signal terminal interface IN1 and the remote opening signal terminal interface IN2 are connected to the input port of the terminal IO board, and the closing signal output terminal interface OUT1 and the opening signal output terminal interface OUT2 are connected to the output port of the terminal IO board.

[0040] The closing loop is formed by connecting the normally closed end of the closing button S1 to the normally closed contact K1-4 of the closing relay, the 24V DC power supply DC1-1, the coil K2-1 of the opening relay, the normally open end of the opening button S2 to the normally closed end of the closing button S1, the opening relay coil K2-1 is connected to the remote opening signal terminal interface IN2, and the self-locking contact K2-2 of the opening relay is connected to the normally open end of the opening button S2. The closing loop is formed by connecting the normally open end of the closing button S1 to the coil K1-1 of the closing relay, the normally closed contact K2-4 of the opening relay, the 24V DC power supply DC1-2, the normally closed end of the opening button S2 to the normally open end of the closing button S1, the self-locking contact K1-2 of the closing relay is connected to the normally open end of the closing button S1, and the coil K1-1 of the closing relay is connected to the remote closing signal terminal interface IN1.

[0041] The 5V DC power supply DC2-1 is connected in series with the normally open contact K1-3 of the closing relay, and then connected in parallel with the closing signal lamp L1 and the closing signal output terminal interface OUT1.

[0042] The 5V DC power supply DC2-2 is connected in series with the normally open contact K2-3 of the opening relay, and then connected in parallel with the opening signal lamp L2 and the opening signal output terminal interface OUT2.

[0043] The analog circuit structure of the circuit breaker is simplified, the single-path button is replaced by a double-path button, the opening and closing functions are realized by cooperating with the opening relay and the closing relay, and the use of auxiliary relays is reduced. The trolley is also equipped with an ADMU module for interaction with a digital FTU.

[0044] The three-in-one navigation plug cable 1 is connected to the analog circuit breaker by the fork compression terminal 144 in a compression or plug-in mode, and the analog circuit breaker and the ADMU module are electrically connected to the terminal IO board.

[0045] The specific implementation of the device is as follows:

[0046] Before testing the opening and closing functions of the electromagnetic FTU on site, the trolley body 2 is pulled to the site by using the stretchable push-pull handle 24. The electromagnetic navigation plug female head 12 in the three-in-one navigation plug cable body 1 is inserted into the electromagnetic FTU interface. The analog circuit breaker judges the current state, specifically as follows:

[0047] Manual closing and closing state detection: press the closing button S1, the closing relay coil K1-1 works, the closing relay self-locking contact K1-2 is closed, the closing relay normally open contact K1-3 is closed, the closing signal lamp L1 is on, and the closing signal output OUT1 sends a closing signal to the FTU;

[0048] The closing relay normally closed contact K1-4 is disconnected, the opening relay coil K2-1 loses power, the opening relay normally open contact K2-3 is disconnected, the opening signal lamp L2 is off, and the opening signal output OUT2 sends no signal to the FTU.

[0049] Remote closing and closing position detection: the closing relay coil K1-1 works when the closing signal terminal interface IN1 inputs the closing signal, the closing relay self-locking contact K1-2 is closed, the closing relay normally open contact K1-3 is closed, the closing position signal lamp L1 is bright, and the closing position signal output OUT1 outputs the closing position signal to the FTU;

[0050] The closing relay normally closed contact K1-4 is disconnected, the opening relay coil K2-1 loses power, the opening relay normally open contact K2-3 is disconnected, the opening position signal lamp L2 is off, and the opening position signal output OUT2 outputs no signal to the FTU.

[0051] Manual opening and opening position detection of the circuit breaker: the opening relay coil K2-1 works when the opening button S2 is pressed, the opening relay self-locking contact K2-2 is closed, the opening relay normally open contact K2-3 is closed, the opening position signal lamp L2 is bright, and the opening position signal output OUT2 outputs the opening position signal to the FTU; the opening relay normally closed contact K2-4 is disconnected, the closing relay coil K1-1 loses power, the closing relay normally open contact K1-3 is disconnected, the closing position signal lamp L1 is off, and the closing position signal output OUT1 outputs no signal to the FTU.

[0052] Remote opening and opening position detection: the opening relay coil K2-1 works when the opening signal terminal interface IN2 inputs the opening signal, the opening relay self-locking contact K2-2 is closed, the opening relay normally open contact K2-3 is closed, the opening position signal lamp L2 is bright, and the opening position signal output OUT2 outputs the opening position signal to the FTU; the opening relay normally closed contact K2-4 is disconnected, the closing relay coil K1-1 loses power, the closing relay normally open contact K1-3 is disconnected, the closing position signal lamp L1 is off, and the closing position signal output OUT1 outputs no signal to the FTU.

[0053] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A test trolley carrying a simulated circuit breaker, characterized in that: The test trolley body is provided with a simulated circuit breaker, a three-in-one aviation plug cable (1) and an ADMU module, the three-in-one aviation plug cable (1) is connected to the simulated circuit breaker through a fork type crimping terminal (144), the simulated circuit breaker and the ADMU module are electrically connected to a terminal IO board; the aviation plug female head of the three-in-one aviation plug cable (1) is arranged outside the test trolley shell, the aviation plug cable (14) is wound on a wire wheel (214), the wire wheel (214) is connected with a force transmission rod (213), the top end of the force transmission rod is provided with a take-up handle (215), and the fork type crimping terminal (144) of the three-in-one aviation plug cable is connected to the simulated circuit breaker.

2. A test trolley carrying analog circuit breaker according to claim 1, characterized in that, The three-in-one aviation plug cable comprises a digital aviation plug female head (11), an electromagnetic aviation plug female head (12) and an electronic aviation plug female head (13), the aviation plug female heads are sequentially connected with aviation plug special nuts (112), aviation plug head cable connectors (113) and cables (141), the on-off pins of the digital aviation plug female head (11), the electromagnetic aviation plug female head (12) and the electronic aviation plug female head (13) are connected with a three-in-one output connector, the on-off pins of the electromagnetic aviation plug female head (12) and the electronic aviation plug female head (13) are connected with a two-in-one output connector, and the output lines of the three-in-one output connector and the two-in-one output connector and the output lines of the aviation plug female heads constitute an aviation plug cable and are connected with a fork type crimping terminal (144) at the end.

3. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The simulated circuit breaker comprises a closing button S1, a closing relay K1, a 24V DC power supply DC1, a remote closing signal terminal interface IN1, a closing position signal output terminal interface OUT1, a closing position signal lamp L1, an opening button S2, an opening relay K2, a 5V DC power supply DC2, a remote opening signal terminal interface IN2, an opening position signal output terminal interface OUT2 and an opening position signal lamp L2; wherein the normally closed end of the closing button S1 is sequentially connected with a closing relay normally closed contact K1-4, a 24V DC power supply DC1-1, an opening relay coil K2-1, an opening button S2 normally open end to the normally closed end of the closing button S1 to form a closed loop, the remote opening signal terminal interface IN2 is connected with the opening relay coil K2-1 in parallel, and the opening relay self-locking contact K2-2 is connected with the opening button S2 normally open end in parallel; the normally open end of the closing button S1 is sequentially connected with a closing relay coil K1-1, an opening relay normally closed contact K2-4, a 24V DC power supply DC1-2, an opening button S2 normally closed end to the normally open end of the closing button S1 to form a closed loop, the closing relay self-locking contact K1-2 is connected with the closing button S1 normally open end in parallel, and the remote closing signal terminal interface IN1 is connected with the closing relay coil K1-1 in parallel; the 5V DC power supply DC2-1 is connected with the closing relay normally open contact K1-3 in series and then connected with the closing position signal lamp L1 and the closing position signal output terminal interface OUT1 in parallel; the 5V DC power supply DC2-2 is connected with the opening relay normally open contact K2-3 in series and then connected with the opening position signal lamp L2 and the opening position signal output terminal interface OUT2 in parallel; The remote closing signal terminal interface IN1 and the remote opening signal terminal interface IN2 are connected with the input port of the terminal IO board, and the closing signal output terminal interface OUT1 and the opening signal output terminal interface OUT2 are connected with the output port of the terminal IO board.

4. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The main body of the test trolley is provided with a stretchable push-pull handle (24), and the test trolley is internally provided with a corresponding push-pull handle storage area (242).

5. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The test trolley is provided with a box handle (241) fixedly connected to the trolley body (2).

6. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The test trolley is provided with a USB female head storage area (211), and the storage area is provided with a movable door connected by a hinge. The USB female head storage area (211) is internally provided with a through hole, and a USB female head cable passes through the through hole.

7. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The bottom of the test trolley is provided with a moving device (23) including a rubber tire (231), a hub (232), and a bearing (233).

8. The test trolley carrying analog circuit breaker as claimed in claim 1 wherein, The inside of the test trolley is provided with a reserved tool box (25) above the wire wheel (214).

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