CN204885975U - Integrated metal armored cabinet electrical testing and grounding handcart device - Google Patents

Abstract

The utility model discloses a handcart device for electric testing and grounding of an integrated metal armored cabinet, comprising: a vehicle frame base, a vehicle frame, a moving contact, a contact arm, a sensor, a grounding knife, a grounding static contact, and a grounding moving contact head, opening and closing spring, push plate, grounding bar and panel, the frame is set on the frame base, push plate is set on the frame base, grounding bar is set on the frame and the frame base, grounding knife It is arranged on the vehicle frame, the grounding movable contact is arranged on the grounding knife, the opening and closing spring is arranged on the grounding moving contact, the grounding static contact is set in cooperation with the grounding moving contact, the front end of the grounding knife is provided with a sensor, and the contact arm The moving contact and the sensor are connected, and the panel is arranged on the vehicle frame. Realize the advantages of shortening the power-off operation time, improving the reliability of equipment operation, and reducing the operational safety risks of operating personnel.

Description

Integrated metal armored cabinet electrical testing and grounding handcart device

technical field

The utility model relates to the field of power equipment maintenance equipment, in particular to an integrated metal armored cabinet electric testing and grounding handcart device.

Background technique

At present, with the continuous development of power technology, 6-35kV equipment is generally replaced by metal armored cabinets under current circumstances. How to directly inspect and ground the busbars of the same voltage level is a major problem that has plagued the operation management unit for a long time. Some switchgear bus maintenance electric testing grounding handcarts are two independent handcarts, and there is no function of preventing misoperation and monitoring the integrity of the electric testing device. The operation of the electric test and grounding method is cumbersome, and an electric test handcart and a grounding handcart are required to be used together. At the same time, there is no anti-misoperation function between the electric test and grounding operations, so this electric test and grounding method lacks safety. sex and reliability. According to a large number of statistics, the average time for such an operation is 15 minutes. Therefore, improving the convenience, safety and reliability of the electrical inspection and grounding of the switchgear bus is an urgent problem to be solved to improve the operation and management level of the power system.

In the prior art, the working mode of the electric inspection handcart and the grounding handcart is that after the busbar power failure, the PT switch handcart is pulled out to the inspection position, and then the electric inspection handcart is pushed into the PT interval to verify that the three phases have no voltage Finally, pull out the electric testing trolley, and then push the grounding trolley into the PT interval to complete the grounding operation. There are the following defects and problems: ⑴Electrical testing and grounding handcarts are independent, cumbersome to operate and inconvenient to store. (2) There is no five-proof locking function of the microcomputer, which causes the grounding point of the electric test to be fixed and the operation hole (and button) of the grounding part is not locked, which does not meet the requirements of the "Electricity Safety Work Regulations". (3) There is no five-proof locking device, and it is easy to hang the ground wire with electricity. (4) There is no observation window and electrical circuit for checking whether the grounding part is in good contact.

Utility model content

The purpose of this utility model is to solve the above problems, and propose an integrated metal armored cabinet electrical inspection and grounding handcart device, so as to shorten the power failure operation time, improve the reliability of equipment operation, and reduce the operational safety risk of operators. advantage.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An integrated metal armored cabinet electric testing and grounding handcart device, including: frame base, frame, moving contact, contact arm, sensor, grounding knife, grounding static contact, grounding moving contact, opening and closing Springs, push plates, ground bars and panels, the frame is set on the frame base, the push plate is set on the frame base, the ground bar is set on the frame and the frame base, and the ground knife is set on the frame , the grounding knife is provided with a grounding movable contact, the grounding movable contact is provided with an opening and closing spring, the grounding static contact is arranged in cooperation with the grounding movable contact, the front end of the grounding knife is provided with a sensor, and the contact arm is connected to the moving contact and The sensor, the panel is arranged on the vehicle frame.

Further, the panel is provided with a charging display device, an observation window, a buzzer, a vehicle entry and exit hole, a secondary latch, a manual operation hole for a grounding knife switch, and five anti-locks, and the secondary latch connected to the secondary circuit is arranged on the panel. In the upper part, the charging display device is electrically connected to the sensor, and the manual operation hole of the grounding knife switch and the entry and exit holes are all equipped with five anti-blocking. When the charging display device senses that there is electricity, the buzzer will alarm.

The technical solution of the utility model has the following beneficial effects:

In the technical scheme of the utility model, (1) the position of the electric testing device and the grounding device are reasonably allocated in the same device. (2) Equipped with a microcomputer five-proof locking device, through the logical relationship, the fixity of the grounding point of the electrical inspection can be realized, and the five-proof locking function of the operation hole (and button) of the grounding part can be realized according to the prescribed operation process. ⑶ Install live display device, induction probe and buzzer on the device, so as to facilitate signal indication and sound prompt during electric test. ⑷ Open an observation window on the panel of the device to check whether the grounding part is in good contact. The portability, simplification and reliability of the integrated handcart are realized. It has the characteristics of light weight, low cost, perfect function, safe and reliable operation. The purpose of shortening the power failure operation time, improving the reliability of equipment operation, and reducing the operation safety risk of operating personnel is achieved.

Description of drawings

Fig. 1 is a structural schematic diagram of the integrated metal armored cabinet electrical inspection and grounding handcart device described in the embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the panel described in the embodiment of the present invention.

In conjunction with the accompanying drawings, reference signs are as follows in the utility model embodiment:

1-Live display device; 2-Observation window; 3-Buzzer; 4-In and out of the car hole; 5-Secondary pin; 6-Earth knife manual operation hole; -contact arm; 10-sensor; 11-grounding knife; 12-grounding static contact; 13-grounding moving contact; 14-opening and closing spring; 15-push plate; 16-grounding bar; 17-panel; Frame base; 19-frame.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

As shown in Figure 1, an integrated metal armored cabinet electrical inspection and grounding handcart device includes: frame base 18, frame 19, moving contact 8, contact arm 9, sensor 10, grounding knife 11, grounding Static contact 12, ground moving contact 13, opening and closing spring 14, push plate 15, ground bar 16 and panel 17, vehicle frame 19 is arranged on vehicle frame base 18, and vehicle frame base 18 is provided with push plate 15 , the frame 19 and the frame base 18 are provided with a grounding row 16, the grounding knife 11 is arranged on the frame 19, the grounding knife 11 is provided with a grounding movable contact 13, and the grounding movable contact 13 is provided with an opening and closing spring 14, The static grounding contact 12 is cooperating with the moving grounding contact 13 , the sensor 10 is set at the front end of the grounding blade 11 , the contact arm 9 connects the moving contact 8 and the sensor 10 , and the panel 17 is set on the vehicle frame 19 .

As shown in Figure 2, the panel 17 is provided with a charged display device 1, an observation window, a buzzer 3, an access hole 4, a secondary latch 5, a manual operation hole 6 for a grounding knife switch, and a five-proof lock 7, which are connected to the secondary The secondary latch 5 of the circuit is arranged on the top of the panel 17, the charged display device 1 is electrically connected to the sensor 10, and the grounding knife switch manual operation hole 6 and the entry and exit hole 4 are all provided with five anti-blocking locks 7, when the charged display device senses When there is electricity, the buzzer will alarm.

The specific functions of each component are as follows:

Charged display device 1: Display whether there is voltage in the three-phase maintenance bus.

Observation window 2: Check the opening and closing of the grounding knife switch and the contact of the moving contact.

Buzzer 3: When the charging display device senses that there is electricity, it will give a voice alarm to remind the operator.

Access to the vehicle hole 4: push in and pull out the electric test grounding handcart.

Secondary pin 5: connected to the secondary circuit.

Grounding knife manual operation hole 6: Manually open and close the grounding knife switch.

Five anti-blocking 7: prevent mistakenly entering the charged interval and ensure the uniqueness of the grounding point; it is used to prevent misoperation of the grounding device and handcart.

Moving contact 8: The contact between the device and the static contact of the cabinet.

Contact arm 9: connect the moving contact and the sensor.

Sensor 10: senses whether there is voltage in the three-phase busbar, and provides induced voltage for the charged display.

Grounding knife 11: grounding of the maintenance busbar.

Ground static contact 12: reliable contact with the ground moving contact of the ground knife.

Grounding moving contact 13: reliable contact with the grounding static contact of the grounding knife.

Opening and closing spring 14: control the opening and closing of the grounding moving contact.

Push plate 15: Control the opening mode of the upper and lower contact isolation baffles of the cabinet.

Grounding bar 16: ensure reliable contact between the maintenance busbar and the main grounding grid.

The technical scheme of the utility model solves the problem of whether the electric inspection and grounding can be performed safely when the busbar of the switchgear is turned over for maintenance, can improve the work efficiency of the operation and maintenance personnel of the substation (opening and closing station), shorten the operation time of power failure, and effectively prevent the accidental entry into the charged interval and the charged hanger Ground line accidents, improve the reliability of equipment operation, especially greatly reduce the operational safety risks of operation and maintenance personnel. Compared with the previous independent grounding handcart and electric inspection handcart, it has the characteristics of simple structure, low cost, more complete functions, safer and more reliable operation.

In summary, the technical solution of the utility model has the following characteristics:

⑴In the same device, the positions of the electric testing device and the grounding device are reasonably allocated to ensure that the structure is simple, the operation is flexible, economical and practical, and it complies with regulations. (2) Realize the sound and light inspection and voice alarm function of the electroscope device. (3) Compulsory locking is realized between the electro-testing device and the grounding device, and the grounding device is reliably blocked when it is verified that there is electricity. ⑷The five-proof logic blocking function is realized between the device and the busbar grounding compartment to ensure the uniqueness of its pushing into the compartment (set an obvious grounding sign at an appropriate position of the compartment). ⑸ The grounding knife switch operation of the grounding device can be operated both electrically and manually (the operating motor uses a DC motor). ⑹ Realize the docking and limiting of the moving contact of the device and the static contact of the metal armored cabinet, and reasonably set the push plate to ensure that the isolation baffle for the upper isolation static contact is reliably opened, and the isolation baffle for the lower isolation static contact is reliably closed. ⑺Set up an observation window on the panel of the device to check the opening and closing positions of the device contacts and the grounding knife switch.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (2)

1. An integrated metal armored cabinet electric test grounding handcart device, characterized in that it includes: frame base, vehicle frame, moving contact, contact arm, sensor, grounding knife, grounding static contact, grounding moving Contacts, opening and closing springs, push plates, grounding bars and panels, the frame is set on the frame base, the push plate is set on the frame base, the grounding bar is set on the frame and the frame base, and the grounding The knife is arranged on the vehicle frame, the grounding movable contact is arranged on the grounding knife, the opening and closing spring is arranged on the grounding movable contact, the grounding static contact is set in cooperation with the grounding movable contact, the front end of the grounding knife is provided with a sensor, and the contact The arm is connected with the moving contact and the sensor, and the panel is arranged on the vehicle frame. 2. The integrated metal armored cabinet electric inspection and grounding handcart device according to claim 1, characterized in that, the panel is provided with a charging display device, an observation window, a buzzer, an access hole, a secondary latch, The manual operation hole of the grounding knife switch and the five-proof lock, the secondary pin connected to the secondary circuit are set on the upper part of the panel, the charging display device is electrically connected to the sensor, and the manual operation hole of the grounding knife switch and the access hole are equipped with five Anti-locking, when the charging display device senses that there is electricity, the buzzer will alarm.