Circuit breaker outgoing line side closing completeness safety detection device

Abstract

The utility model provides a circuit breaker outgoing line side closing completeness safety detection device comprising a detection unit which is connected in series with a power line of a circuit breaker outgoing line side and is conducted according to closing of a circuit breaker; the measuring unit is connected in series with the power line at the outlet side of the circuit breaker and measures the voltage of the power line at the outlet side of the circuit breaker according to the closing of the circuit breaker; and the detection unit and the measurement unit are arranged in parallel. According to the utility model, through the arrangement of the detection unit and the measurement unit, when one-phase, two-phase or three-phase closing of the primary closing contact at the outgoing line side of the circuit breaker is incomplete, detection can be carried out in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of closing safety inspection on the outgoing line side of a circuit breaker, and in particular relates to a closing complete safety detection device on the outgoing line side of a circuit breaker. Background Art

[0002] In the prior art, when the incoming circuit breaker in the low-voltage incoming cabinet needs to be closed to supply power, the on-site staff first observes the power indicator light and voltmeter on the incoming side. If all three-phase power indicator lights are on and the voltmeter shows normal values, the staff closes the incoming circuit breaker and completes the power connection.

[0003] However, there is no power indicator light and voltmeter on the outgoing side of the circuit breaker. When one, two or three phases of the primary closing contact on the outgoing side of the circuit breaker have insufficient closing torque due to aging of the circuit breaker spring, resulting in an incomplete closing failure, it is difficult for on-site staff to discover it in time because the primary closing contact is inside the circuit breaker and its line of sight is blocked by the circuit breaker shell and cannot be observed. At the same time, the metal surface of the primary closing contact of the circuit breaker is worn during the long-term opening and closing process, resulting in insufficient contact surface of the primary contact, causing increased contact resistance and decreased current carrying capacity, resulting in load equipment operation failures, corporate economic losses, personal safety hazards, etc. Utility Model Content

[0004] In order to overcome the above technical defects, the utility model provides a flyback switching power supply surge current suppression device, which can realize the safety detection of closing the circuit breaker on the outgoing line side.

[0005] The utility model is realized by the following scheme:

[0006] A circuit breaker outgoing line side closing complete safety detection device, comprising:

[0007] The detection unit is connected in series with the power line on the outgoing side of the circuit breaker and is turned on according to the closing of the circuit breaker;

[0008] A measuring unit is connected in series with a power line on the outgoing side of the circuit breaker, and measures the voltage of the power line on the outgoing side of the circuit breaker according to the closing of the circuit breaker;

[0009] The detection unit and the measurement unit are arranged in parallel.

[0010] As a further improvement of the present invention, the detection unit comprises:

[0011] A first detection branch, one end of which is connected to a first-phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to a neutral line on the outgoing line side of the circuit breaker;

[0012] A second detection branch, one end of which is connected to the second phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to the neutral line on the outgoing line side of the circuit breaker;

[0013] A third detection branch, one end of which is connected to the third-phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to the neutral line on the outgoing line side of the circuit breaker;

[0014] The first detection branch, the second detection branch, and the third detection branch are arranged in parallel.

[0015] As a further improvement of the present invention, the first detection branch includes: a first warning device, a first connecting piece, a first phase power line on the outgoing line side of the circuit breaker, the first warning device, the first connecting piece, and a neutral line on the outgoing line side of the circuit breaker are connected in series in sequence.

[0016] As a further improvement of the present invention, the second detection branch includes: a second warning device, a second connecting piece, a second phase power line on the outlet side of the circuit breaker, the second warning device, the second connecting piece, and a neutral line on the outlet side of the circuit breaker are connected in series in sequence.

[0017] As a further improvement of the present invention, the third detection branch includes: a third warning device, a third connecting piece, a third-phase power line on the outgoing line side of the circuit breaker, the third warning device, the third connecting piece, and a neutral line on the outgoing line side of the circuit breaker are connected in series in sequence.

[0018] As a further improvement of the utility model, the utility model further comprises: a leakage protection switch connected between the detection unit and the power line on the outgoing line side of the circuit breaker.

[0019] As a further improvement of the present utility model, the measuring unit comprises: a conversion switch and a voltmeter;

[0020] The input end of the conversion switch is connected to the first phase power line on the outgoing line side of the circuit breaker, the second phase power line on the outgoing line side of the circuit breaker, and the third phase power line on the outgoing line side of the circuit breaker, and the output end is connected to the voltmeter;

[0021] The voltmeter is connected to two phases of the first phase power line on the outgoing line side of the circuit breaker, the second phase power line on the outgoing line side of the circuit breaker, and the third phase power line on the outgoing line side of the circuit breaker according to the action of the conversion switch.

[0022] As a further improvement of the utility model, the utility model further comprises: a fuse connected between the detection unit and the power line on the outgoing line side of the circuit breaker.

[0023] Compared with the prior art, the utility model has the beneficial effect that by setting up the detection unit and the measuring unit, when there is a problem of incomplete closing of one phase, two phases or three phases of the primary closing contact on the outgoing side of the circuit breaker, timely detection can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 It is a schematic diagram of the overall structure of the circuit breaker outgoing line side closing integrity safety detection device of the utility model.

[0026] Figure numerals: 1. Closing integrity safety detection device for outgoing line side of circuit breaker; 11. Detection unit; 111. First detection branch; 112. Second detection branch; 113. Third detection branch; 12. Measurement unit. DETAILED DESCRIPTION

[0027] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0028] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0030] The utility model provides a circuit breaker outlet side closing complete safety detection device 1, such as Figure 1As shown, the power supply on the incoming line side is a voltage of 380V, a three-phase five-wire system (L1, L2, L3, N.PE), and the outgoing line side of the circuit breaker QF is connected to the circuit breaker outgoing line closing complete safety detection device 1 through the connecting clamps LJJ01~03. The circuit breaker outgoing line closing complete safety detection device 1 includes: a detection unit 11 and a measuring unit 12; the detection unit 11 is connected in series with the power line on the outgoing line side of the circuit breaker, and is turned on according to the closing of the circuit breaker; the measuring unit 12 is connected in series with the power line on the outgoing line side of the circuit breaker, and the voltage of the power line on the outgoing line side of the circuit breaker is measured according to the closing of the circuit breaker; the detection unit 11 and the measuring unit 12 are arranged in parallel.

[0031] Furthermore, the detection unit 11 includes: a first detection branch 111, a second detection branch 112, and a third detection branch 113 arranged in parallel; one end of the first detection branch 111 is connected to the first-phase power line on the outgoing line side of the circuit breaker, and the other end is connected to the neutral line on the outgoing line side of the circuit breaker; one end of the second detection branch 112 is connected to the second-phase power line on the outgoing line side of the circuit breaker, and the other end is connected to the neutral line on the outgoing line side of the circuit breaker; one end of the third detection branch 113 is connected to the third-phase power line on the outgoing line side of the circuit breaker, and the other end is connected to the neutral line on the outgoing line side of the circuit breaker.

[0032] The first detection branch 111 includes: a first warning device HY, a first connecting piece LP1, a first phase power line L11 on the outgoing side of the circuit breaker, a first warning device HY, a first connecting piece LP1, and a neutral line N on the outgoing side of the circuit breaker QF are connected in series in sequence. The first warning device HY can be a buzzer, an indicator light, or an indicator light with a buzzer.

[0033] The second detection branch 112 includes: a second warning device HG, a second connecting piece LP2, a second phase power line L12 on the outgoing side of the circuit breaker, a second warning device HG, a second connecting piece LP2, and a neutral line N on the outgoing side of the circuit breaker QF are connected in series in sequence. The second warning device HG can be a buzzer, an indicator light, or an indicator light with a buzzer.

[0034] The third detection branch 113 includes: a third warning device HR, a third connecting piece LP13, a third-phase power line L13 on the outgoing side of the circuit breaker QF, a third warning device HR, a third connecting piece LP13, and a neutral line N on the outgoing side of the circuit breaker QF are connected in series in sequence. The third warning device HR can be a buzzer, an indicator light, or an indicator light with a buzzer.

[0035] In order to avoid leakage faults during operation, the utility model further comprises: a leakage protection switch K connected between the detection unit 11 and the power line on the outgoing side of the circuit breaker.

[0036] The measuring unit 12 includes: a conversion switch SA and a voltmeter PV; the input end of the conversion switch SA is connected to the first phase power line L11 on the outgoing line side of the circuit breaker, the second phase power line L12 on the outgoing line side of the circuit breaker, and the third phase power line L13 on the outgoing line side of the circuit breaker, and the output end is connected to the voltmeter PV; the voltmeter PV is connected to two phases of the first phase power line L11 on the outgoing line side of the circuit breaker, the second phase power line L12 on the outgoing line side of the circuit breaker, and the third phase power line L13 on the outgoing line side of the circuit breaker according to the action of the conversion switch SA.

[0037] In order to improve the safety performance of the detection unit 11 and protect the entire device, the utility model also includes: a fuse FU connected between the detection unit 11 and the power line on the outgoing side of the circuit breaker, wherein each detection branch is provided with a fuse FU.

[0038] Next, the utility model is further explained in conjunction with the specific implementation process, as follows:

[0039] exist Figure 1 In the circuit, the neutral line N is connected to the connecting clamp LJJ04, the ground line PE is connected to the connecting clamp LJJ05, and then connected to the XT:1~5 terminals in the closing complete safety detection device on the outgoing line side of the circuit breaker QF through the secondary line. The terminals act as a transfer, and then the other side of the XT:1~3 terminals is connected to the corresponding leakage protection switch K. The grounding point of the closing complete safety detection device on the outgoing line side of the circuit breaker is connected to XT:5 through the secondary line, the first detection branch, the second detection branch, the third detection branch, and the measuring unit to form a complete detection circuit.

[0040] When there is power on the incoming line side, the circuit breaker QF is closed. At this time, the first warning device HY, the second warning device HG, and the third warning device HR are energized and light up and emit a buzzer prompt, indicating that the three-phase primary contacts on the outgoing line side of the circuit breaker QF have been closed. If one of the warning devices is not lit, it means that this phase has failed to close and a fault has occurred. In this case, it is necessary to stop the start of the load equipment and first deal with the problem of a certain light not being lit, thus avoiding other accidents.

[0041] If the first warning device HY, the second warning device HG, and the third warning device HR are all lit and beep, the load device cannot be started, because the next step is to check whether the voltage values ​​of each phase displayed by the voltmeter PV are normal through the conversion switch SA. If the voltage value of a phase is not satisfied, it is possible that the metal surface of the primary contact on the outgoing line side is worn, resulting in insufficient contact surface. In this case, the start of the load device needs to be stopped, and the problem of the voltage value of a phase not being satisfied is handled first, thus avoiding other accidents.

[0042] If the first warning device HY, the second warning device HG, and the third warning device HR are all lit and emit a buzzer prompt, and the voltage values ​​of each phase displayed on the voltage PV meter through the conversion switch SA are normal, then it can be determined that the circuit breaker QF is closed completely and safely, and then the load equipment can be started. This avoids other accidents caused by safety problems such as incomplete closing of the circuit breaker on the outgoing line side.

[0043] At the same time, the utility model also pays attention to personal safety protection measures. If a person is electrocuted or a phase-to-phase or phase-to-ground leakage fault occurs during operation, the leakage protection switch can trip and disconnect the detection power supply in time to prevent the fault from occurring. The device also has energy-saving and consumption-reducing measures. If one, two or three phases of the output line side need to be detected on site, the corresponding connecting piece is closed to reduce power loss.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A circuit breaker outgoing line side closing complete safety detection device, characterized in that: include: The detection unit is connected in series with the power line on the outgoing side of the circuit breaker and is turned on according to the closing of the circuit breaker; A measuring unit is connected in series with a power line on the outgoing side of the circuit breaker, and measures the voltage of the power line on the outgoing side of the circuit breaker according to the closing of the circuit breaker; The detection unit and the measurement unit are arranged in parallel.

2. The circuit breaker outlet side closing complete safety detection device according to claim 1, characterized in that: The detection unit comprises: A first detection branch, one end of which is connected to a first-phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to a neutral line on the outgoing line side of the circuit breaker; A second detection branch, one end of which is connected to the second phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to the neutral line on the outgoing line side of the circuit breaker; A third detection branch, one end of which is connected to the third-phase power line on the outgoing line side of the circuit breaker, and the other end of which is connected to the neutral line on the outgoing line side of the circuit breaker; The first detection branch, the second detection branch, and the third detection branch are arranged in parallel.

3. The circuit breaker outlet side closing complete safety detection device according to claim 2, characterized in that: The first detection branch includes: a first warning device, a first connecting piece, a first phase power line on the outgoing line side of the circuit breaker, the first warning device, the first connecting piece, and a neutral line on the outgoing line side of the circuit breaker are connected in series in sequence.

4. The circuit breaker outlet side closing complete safety detection device according to claim 2, characterized in that: The second detection branch includes: a second warning device, a second connecting piece, a second phase power line on the outgoing line side of the circuit breaker, the second warning device, the second connecting piece, and a neutral line on the outgoing line side of the circuit breaker are connected in series in sequence.

5. The circuit breaker outlet side closing complete safety detection device according to claim 2, characterized in that: The third detection branch includes: a third warning device, a third connecting piece, a third-phase power line on the outgoing line side of the circuit breaker, the third warning device, the third connecting piece, and a neutral line on the outgoing line side of the circuit breaker are connected in series in sequence.

6. The circuit breaker outlet side closing complete safety detection device according to claim 1, characterized in that: Also includes: A leakage protection switch is connected between the detection unit and the power line on the outgoing line side of the circuit breaker.

7. The circuit breaker outlet side closing complete safety detection device according to claim 1, characterized in that: The measuring unit comprises: a conversion switch and a voltmeter; The input end of the conversion switch is connected to the first phase power line on the outgoing line side of the circuit breaker, the second phase power line on the outgoing line side of the circuit breaker, and the third phase power line on the outgoing line side of the circuit breaker, and the output end is connected to the voltmeter; The voltmeter is connected to two phases of the first phase power line on the outgoing line side of the circuit breaker, the second phase power line on the outgoing line side of the circuit breaker, and the third phase power line on the outgoing line side of the circuit breaker according to the action of the conversion switch.

8. The circuit breaker outlet side closing complete safety detection device according to claim 1, characterized in that: Also includes: A fuse connected between the detection unit and a power line on the outgoing line side of the circuit breaker.

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