Bus nuclear phase equipment

Abstract

The utility model relates to bus nuclear phase equipment, which comprises a frame-type switch handcart, two fixed contact groups, two circuit breakers, two change-over switches and a voltmeter, the wire inlet ends of the two circuit breakers are correspondingly and electrically connected with the two fixed contact groups, and the wire outlet ends of the two circuit breakers are correspondingly and electrically connected with static contacts of the two change-over switches. And movable contacts of the two change-over switches are electrically connected with two wire inlet ends of the voltmeter respectively. When the device is used, the fixed contact is contacted with a static contact in a 380V bus coupler switch cabin to be subjected to phase checking, then the two change-over switches are rotated, and the reading of voltage change is observed, so that the phase checking work can be completed, a worker is prevented from approaching a 380V voltage bus at a short distance, and the working efficiency is improved. Personal electric shock accidents and equipment short circuit accidents caused in the bus phase checking process of a 380V voltage grade distribution room can be effectively avoided; meanwhile, the device has the advantages of being easy to manufacture, high in universality, easy to manufacture on a large scale and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical field, concretely relates to a bus phase checking equipment. BACKGROUND

[0002] 380V bus power generation or transformer above equipment cable maintenance process can easily cause cable wiring error, so need to check the phase of 380V voltage bus A, B, C three phase work, prevent 380V voltage two section bus phase inconsistency causes single road operation motor and other rotating equipment reverse, cause operation accident. In 380V voltage bus check the phase process with multimeter, because the bus is electrified and the bus installation process is overlapped arrangement, it is extremely easy to cause electric shock accident and equipment short circuit accident. SUMMARY

[0003] The utility model relates to a bus phase checking equipment, can effectively avoid in 380V voltage grade distribution room bus phase checking process causes electric shock accident and equipment short circuit accident.

[0004] The utility model discloses a bus phase checking equipment, which can effectively avoid electric shock accident and equipment short circuit accident in the process of checking the phase of 380V voltage bus.

[0005] Frame type switch handcart;

[0006] Two groups of fixed contact groups are arranged on the upper and lower sides of one side of the frame type switch handcart.

[0007] Two circuit breakers, two change-over switches and a voltmeter are arranged on the other side of the frame type switch handcart, the incoming line ends of the two circuit breakers are electrically connected with the two groups of fixed contact groups, the outgoing line ends of the two circuit breakers are electrically connected with the static contacts of the two change-over switches, and the dynamic contacts of the two change-over switches are electrically connected with the two incoming line ends of the voltmeter.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, each fixed contact group includes three fixed contacts, and the three fixed contacts in each fixed contact group are arranged in the horizontal direction.

[0010] Further, each circuit breaker is a three-phase miniature circuit breaker.

[0011] Further, each change-over switch is a three-position change-over switch.

[0012] Further, the voltmeter is a pointer type voltmeter or a digital voltmeter.

[0013] Further, the frame switch trolley comprises:

[0014] a base;

[0015] a screw rod assembly mounted on the base;

[0016] a frame switch panel vertically mounted on a nut of the screw rod assembly.

[0017] Further, two groups of the fixed contact groups are respectively arranged on upper and lower sides of one side of the frame switch panel; two circuit breakers, two change-over switches and one voltmeter are arranged on the other side of the frame switch panel.

[0018] Further, the frame switch trolley further comprises a crank handle connected with a screw rod shaft of the screw rod assembly.

[0019] Further, a limiting device is arranged on the screw rod assembly.

[0020] Further, a pulley is arranged at the bottom of the base.

[0021] The frame switch trolley has the advantages that when the busbar phase checking equipment is used, only the fixed contact of the frame switch trolley is contacted with the static contact in the 380V busbar switch cabinet to be checked, then the two change-over switches are rotated and the reading of the voltmeter is observed, and the phase checking work is completed, the staff is prevented from approaching the 380V busbar, the electric shock accident and the equipment short circuit accident are effectively avoided during the busbar phase checking in the 380V voltage distribution room, and the frame switch trolley has the characteristics of simple manufacturing, high universality and easy large-scale manufacturing. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 1 is a structural schematic view of the busbar phase checking equipment;

[0023] Figure 2 Fig. 2 is a state schematic view of the connection of the circuit breaker, the change-over switch and the voltmeter in the busbar phase checking equipment;

[0024] Figure 3 Fig. 3 is a circuit principle view of the connection of the circuit breaker, the change-over switch and the voltmeter in the busbar phase checking equipment.

[0025] In the drawings, the components represented by the reference numbers are listed as follows:

[0026] 1, frame switch trolley, 11, base, 12, frame switch panel, 13, crank handle, 2, fixed contact group, 3, circuit breaker, 4, change-over switch, 5, voltmeter. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] like Figure 1 As shown, a busbar phase comparison device includes: a frame-type switch truck 1, two sets of fixed contact groups 2, two circuit breakers 3, two changeover switches 4, and a voltmeter 5; the two sets of fixed contact groups 2 are respectively arranged on the upper and lower sides of one side of the frame-type switch truck 1; the two circuit breakers 3, the two changeover switches 4, and the voltmeter 5 are all arranged on the other side of the frame-type switch truck 1.

[0029] In some embodiments, the frame-type switch truck 1 includes:

[0030] Base 11;

[0031] A lead screw assembly, which is mounted on the base 11;

[0032] A frame switch panel 12 is vertically mounted on the nut of the lead screw assembly.

[0033] Specifically, the two sets of fixed contact groups 2 are respectively arranged on the upper and lower sides of one side of the frame switch panel 12; the two circuit breakers 3, the two changeover switches 4 and the voltmeter 5 are all arranged on the other side of the frame switch panel 12.

[0034] Preferred:

[0035] The frame-type switch trolley 1 also includes a crank handle 13, which is connected to the lead screw shaft of the lead screw assembly. By rotating the lead screw in the lead screw assembly through the crank handle 13, the nut moves back and forth, thereby driving the frame switch panel 12 to move. This adjusts the position of the fixed contact group 2 on the frame switch panel 12 so that it contacts the stationary contact inside the 380V bus tie switch compartment, facilitating operation and preventing electric shock accidents and equipment short circuits during phase verification of the busbar in the 380V voltage level distribution room.

[0036] The lead screw assembly is equipped with a limiting device. This limiting device has a fixed contact positioning stroke indication and locking function, which can prevent the fixed contact from pressing against the stationary contact in the 380V bus tie switch compartment after it has reached its position, thus preventing damage.

[0037] The base 11 is equipped with pulleys 13 at its bottom. The pulleys 13 facilitate the movement of the bus phase comparison equipment; the pulleys 13 can be equipped with a braking function, so that when the bus phase comparison equipment is moved to the approximate position, the braking function can fix the bus phase comparison equipment in place, avoiding the inconvenience caused by the movement of the bus phase comparison equipment during the phase comparison operation.

[0038] like Figure 2 As shown: the input terminals of the two circuit breakers 3 are electrically connected to the two sets of fixed contact groups 2, the output terminals of the two circuit breakers 3 are electrically connected to the stationary contacts of the two changeover switches 4, and the moving contacts of the two changeover switches 4 are electrically connected to the two input terminals of the voltmeter 5 respectively.

[0039] Specifically: such as Figure 1 and Figure 3 As shown, each group of fixed contacts 2 includes three fixed contacts, and the three fixed contacts in each group of fixed contacts 2 are arranged horizontally. Each circuit breaker 3 is a three-phase miniature circuit breaker. Each changeover switch 4 is a three-position changeover switch. The voltmeter 5 is specifically an analog voltmeter or a digital voltmeter. Using a digital voltmeter can reduce the cost of the utility model, while using a digital voltmeter facilitates reading voltage parameters when verifying phases.

[0040] The process of phase comparison using the bus phase comparison device of this utility model is as follows (taking the phase comparison of three phases A, B, and C of bus #4 and bus #5 at 380V as an example):

[0041] First, close the low-voltage switches 401 and 402 in the 380V distribution room. Both the 380V busbars #4 and #5 in the distribution room are energized. Remove the 380V bus tie switch and place the phase comparison equipment inside the 380V bus tie switch compartment. Crank the crank handle 13 to bring the fixed contacts 2 on the upper and lower sides of one side of the frame switch panel 12 into contact with the stationary contacts inside the 380V bus tie switch compartment. Close the two circuit breakers 3 on the other side of the frame switch panel 12. Turn the handle of one changeover switch 4 to the A-phase ON position, and turn the handle of the other changeover switch 4 to the A, B, and C phases respectively. At this time, the voltmeter 5 should indicate 0-1V, 380V, and 380V respectively. Then, turn the handle of one changeover switch 4 to the B-phase ON position, and turn the handle of the other changeover switch 4 to the A, B, and C phases respectively. At this time, the voltmeter 5 should indicate 380V, 0-1V, and 380V respectively. Finally, turn the handle of one changeover switch 4 to the C-phase on position, and turn the handle of the other changeover switch 4 to phases A, B, and C respectively. At this time, voltmeter 5 should indicate 380V, 380V, and 0-1V respectively. At this point, the phases of the two bus voltages are correct, and the phase verification is complete. During the phase verification process, if the reading of voltmeter 5 is not within the corresponding range, it indicates that the phases of the two bus sections are inconsistent, and maintenance personnel can be dispatched for repairs.

[0042] When using the bus phase comparison device of this utility model, simply make the fixed contact on the frame-type switch trolley contact with the stationary contact in the 380V bus tie switch compartment to be compared, then rotate the two changeover switches and observe the voltage transformer reading to complete the phase comparison work. This avoids personnel from getting close to the 380V voltage bus, effectively preventing personal electric shock accidents and equipment short circuit accidents during the phase comparison process of the 380V voltage level distribution room bus. At the same time, this utility model also has the characteristics of simple manufacturing, strong versatility, and easy mass production.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A busbar phase comparison device, characterized in that, include: Frame-type switch truck; Two sets of fixed contact groups are respectively arranged on the upper and lower sides of one side of the frame-type switch truck; Two circuit breakers, two changeover switches, and one voltmeter are provided. The two circuit breakers, two changeover switches, and one voltmeter are all located on the other side of the frame-type switch truck. The incoming terminals of the two circuit breakers are electrically connected to the two sets of fixed contact groups, and the outgoing terminals of the two circuit breakers are electrically connected to the stationary contacts of the two changeover switches. The moving contacts of the two changeover switches are electrically connected to the two incoming terminals of the voltmeter.

2. The bus phase comparison device according to claim 1, characterized in that, Each group of fixed contacts includes three fixed contacts, and the three fixed contacts in each group of fixed contacts are arranged in a horizontal direction.

3. The bus phase comparison device according to claim 2, characterized in that, Each of the circuit breakers is a three-phase miniature circuit breaker.

4. The bus phase comparison device according to claim 3, characterized in that, Each of the aforementioned changeover switches is a three-position changeover switch.

5. The bus phase comparison device according to any one of claims 1 to 4, characterized in that, The voltmeter is specifically an analog voltmeter or a digital voltmeter.

6. The bus phase comparison device according to any one of claims 1 to 4, characterized in that, The frame-type switchgear includes: Base; A lead screw assembly, which is mounted on the base; A frame switch panel is vertically mounted on the nut of the lead screw assembly.

7. The bus phase comparison device according to claim 6, characterized in that, The two sets of fixed contact groups are respectively arranged on the upper and lower sides of one side of the frame switch panel; the two circuit breakers, the two changeover switches and the voltmeter are all arranged on the other side of the frame switch panel.

8. The bus phase comparison device according to claim 6, characterized in that, The frame-type switch truck also includes a crank handle, which is connected to the lead screw shaft of the lead screw assembly.

9. The bus phase comparison device according to claim 6, characterized in that, The lead screw assembly is equipped with a limiting device.

10. The bus phase comparison device according to claim 6, characterized in that, The base is equipped with casters at its bottom.

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