CN110773467A - Transformer substation's secondary equipment cleans instrument - Google Patents

Abstract

The invention relates to a cleaning tool for secondary equipment of a substation, which comprises a suction fan, a commutator connected with the suction fan in sequence, a steering rod and a brush; An opening is provided at the brush. The commutator includes a casing and a partition plate arranged in the casing; the partition plate divides the casing into a return air area and a blowing area, and a return air port is provided at the left end of the return air area; The air outlet is communicated with the air suction port of the suction fan through the air suction pipe; the side part of the blowing area is provided with an air outlet, and the air outlet is communicated with the air outlet of the suction fan; one end of the casing is provided with a connecting main air pipe The connecting port is connected with the return air area and the blowing area; the inner side of the connecting port is provided with a track groove running through the return air area and the blowing area, and a wind direction switching baffle is arranged in the track groove. The invention has good flexibility, is easy to carry and operate, can switch between air blowing and air suction, and has good cleaning effect.

Description

A substation secondary equipment cleaning tool

technical field

The invention relates to a power maintenance tool, in particular to a cleaning tool for secondary equipment of a substation.

Background technique

A substation is a place in the power system that converts voltage and current, receives and distributes electrical energy. The substation in the power plant is a step-up substation, and its function is to boost the power generated by the generator and feed it to the high-voltage grid.

Substations are divided into four categories, including:

(1) Class I substation. Refers to AC UHV stations, nuclear power, large-scale energy bases (3 million kw and above) outsourcing and inter-regional (North China, Central China, East China, Northeast China, Northwest China) liaison 750/500/330kV substations.

(2) Class II substations. Refers to other than Class I substations, 750/500/330kV substations, substations outside the power plant (1,000,000 kW and above, 3,000,000 kW) and inter-provincial liaison 220kV substations, the main transformer or bus is out of service, the switch refuses to operate Substations that cause grid events of level 4 and above.

(3) Three types of substations. Refers to 220kV substations other than Category II, substations sent outside the power plant (300,000 kW and above, and below 1 million kW), and substations where the main transformer or busbar is out of service, and the switch refuses to actuate and causes a five-level power grid event. Substations that directly supply power to important users.

(4) Four types of substations. Refers to 35kV and above substations other than Category I, II and III.

The electrical equipment in the substation is divided into primary equipment and secondary equipment.

Primary equipment refers to the equipment that directly produces, transmits, distributes and uses electrical energy, mainly including transformers, high-voltage circuit breakers, isolating switches, bus bars, arresters, capacitors, reactors, etc.

The secondary equipment of the substation refers to the equipment that measures, monitors, controls and protects the operating conditions of the primary equipment and system. It mainly consists of relay protection devices, automatic devices, measurement and control devices (current transformers, voltage transformers) , metering devices, automation systems, and DC equipment that provides power for secondary equipment.

The task of the secondary equipment is to reflect the working state of the primary equipment, control the primary equipment and quickly withdraw the accident part from work when the primary equipment fails, which requires all secondary equipment to be in good condition when the system is running. The faults and abnormalities in the system should be responded to, otherwise the consequences will be very serious, so the daily operation, maintenance and inspection of the secondary circuit is particularly important.

According to the relevant management regulations of the substation operation position, the secondary originals such as the instruments and relays of the control panel and the relay protection panel should be cleaned regularly (see the substation regular work schedule for specific provisions), and the control panel, relay protection panel, terminal The secondary equipment such as the terminal block in the box and the operating mechanism box should be cleaned, and the secondary equipment in the outdoor terminal box should be dehumidified and dried if necessary. The common tool used for regular secondary equipment maintenance is the brush. During the use process, many drawbacks and inconveniences to the work, hidden dangers of accidents, and even unsafe accidents have been found.

Secondary equipment cleaning requirements:

1. It is forbidden to scrub with water and damp cloth, and the cleaning tools should be dry;

2. Do not use conductive items to contact the secondary circuit and secondary equipment to prevent electric shock and short circuit;

3. The cleaning is marked with obvious exit signs, and it is not allowed to blow dust with compressed air, so as to prevent dust from blowing into the instrument or other equipment.

The main problems of the currently used secondary equipment cleaning device include: the handle of the brush is short, and the operation is inconvenient. There is metal on the brush, and insulating tape is used to wrap the metal part, but the insulation will be aged for a long time, and it is easy to cause short circuit or misoperation in the studio, which will cause the protection action and cause the switch to trip. The width of the brush head is fixed, and some equipment, especially the relay protection screen, has many secondary equipment, and the layout is so tight that some parts are not cleaned properly. The height of the relay part of the switch cabinet in the switch room is high, and cleaning on the bench increases the risk of falling. There is a lot of dust in the outdoor equipment, and it cannot be cleaned with a brush to clean the floating and sinking, or float into the terminal block and other parts, and it is easy to accumulate dust for a long time. If the cleaning is not timely, it may cause an accident. When the brush is cleaning, the outdoor equipment floats and sinks a lot, and the on-duty personnel are easy to inhale too much dust when cleaning, which is not good for health. At present, vehicle-mounted vacuum cleaners are used for the cleaning of secondary equipment, which can solve the problems such as grounding, short circuit, many carrying tools, easy omission and loss caused by the difficult cleaning of narrow parts and metal parts.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a cleaning tool for secondary equipment of substations with good flexibility, easy portability and operation, switching between blowing and suction, and good cleaning effect.

The present invention adopts following technical scheme:

A cleaning tool for secondary equipment of a substation, which includes a suction fan, a commutator connected with the suction fan in sequence, a steering rod and a brush; a general air duct is inserted in the steering rod, and the general air duct is in the brush. There is an opening.

Further, the commutator includes a casing and a partition plate arranged in the casing; the partition plate divides the casing into a return air area and a blowing area, and the left end of the return air area is provided with an air return port; The air return port is communicated with the suction port of the suction fan through the suction pipe; the side part of the blowing area is provided with an air outlet, and the air outlet is communicated with the exhaust port of the suction fan; one end of the casing is provided with a connection The connection port of the main air duct, the connection port is communicated with the return air area and the blowing area; the inner side of the connection port is provided with a track groove running through the return air area and the blowing area, and a wind direction switching baffle is arranged in the track groove.

Further, the wind direction switching baffle can slide in the track groove, and the width of the wind direction switching baffle is larger than the width of the return air area and also larger than the width of the blowing area.

Further, a purification device is provided in the return air area, and the purification device includes a collection bottle, a collection bottle installation hole arranged at the bottom of the shell and connected with the collection bottle in a thread, and a vertical return air direction is set in the installation hole. The width of the filter screen is equal to the width of the return air area, the top of the filter screen is in conflict with the top of the return air area, and the bottom of the filter screen is in conflict with the bottom of the collection bottle.

Further, the bottom of the filter screen is provided with a rubber pad.

Further, the air suction pipe is provided with a balance air hole, and a wind deflector for opening or closing the balance air hole is inserted on the air suction pipe.

Further, a hand-held handle is provided on the suction fan.

Further, the steering rod includes a main rod, a first direction change rod disposed at both ends of the main rod and rotatably connected to the main rod, the tail of the first direction change rod is connected to the second direction change rod through a rotating shaft, and the Both sides of the second direction changing rod are rotatably connected with a third direction changing rod, and the bottom of the third direction changing rod is rotatably connected to the commutator.

Further, the rotation plane of the main rod and the first direction change rod, the rotation plane of the first direction change rod and the second direction change rod, and the rotation plane of the second direction change rod and the third direction change rod are all uniform. perpendicular to each other.

Further, the outer walls of the suction fan, the commutator and the steering rod are all provided with insulating coatings.

The beneficial effects of the present invention are as follows: the present invention integrates the sweeping and wiping processes in the secondary cleaning to form a secondary cleaning tool integrating wiping, blowing, sweeping and suction, which solves the problem of long cleaning time, many carrying tools and easy loss. , The narrow parts are not easy to clean, and the exposed metal is easy to cause short circuit problems, thereby shortening the cleaning time of the secondary equipment of the substation, reducing the labor intensity, improving the cleaning quality, and eliminating equipment hidden dangers.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the connection structure of the suction fan and the commutator of the present invention.

3 is a schematic horizontal cross-sectional view of the diverter of the present invention.

FIG. 4 is a schematic vertical cross-sectional view of the return air area of the diverter with a collection bottle.

5 is a schematic diagram of a vertical section and a horizontal section of a return air area of the diverter of the present invention.

6 is a schematic vertical cross-sectional view of the blowing area of the diverter of the present invention.

Among them, 1 suction fan, 2 brush, 3 shell, 4 partition plate, 5 return air area, 6 blowing area, 7 return air outlet, 8 suction duct, 9 air outlet, 10 connection port, 11 track groove, 12 Wind direction switching baffle, 13 collection bottle, 14 collection bottle installation hole, 15 filter screen, 16 rubber pad, 17 balance air hole, 18 wind deflector, 19 hand handle, 20 main lever, 21 first direction change lever, 22 rotating shaft , 23 the second change lever, 24 the third change lever.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can do so without departing from the connotation of the present application Similar promotion, therefore, the present application is not limited by the specific embodiments disclosed below.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present application, it should be understood that the orientations indicated by orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and these orientations do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood to limit the scope of protection of this application.

1 to 6, a cleaning tool for secondary equipment in a substation includes a suction fan 1, a commutator connected with the suction fan 1 in sequence, a steering rod and a brush 2; The air duct, the general air duct is provided with an opening at the brush 2 . The main air duct is made of flexible rubber or PVC pipe or directly connected with holes in the rod.

The commutator includes a casing 3 and a partition plate 4 arranged in the casing 3; the partition plate 4 divides the casing into a return air area 5 and a blowing area 6, and the left end of the return air area 5 A return air port 7 is provided; the air return port 7 is communicated with the suction port of the suction fan 1 through the suction pipe 8; The air outlet is connected; one end of the housing 3 is provided with a connection port 10 connected to the main air duct, and the connection port 10 is communicated with the return air area 5 and the blowing area 6; the inner side of the connection port 10 is provided with a penetrating return air The track grooves 11 of the zone 5 and the blowing zone 6 are provided with a wind direction switching baffle 12 in the track grooves 11 . The suction and outlet of the return fan are connected with the commutator to achieve the purpose of one machine for multiple purposes, that is, it can both suck and blow air.

The wind direction switching baffle 12 can slide in the track groove 11 , and the width of the wind direction switching baffle 12 is greater than the width of the return air area 5 and the width of the blowing area 6 . The connecting port is communicated with the return air area and the blowing area, and the connection or sealing of the connecting port with the return air area or the blowing area is switched by the back and forth movement of the wind direction switching baffle in the track groove. The bottom of the filter screen 15 is provided with a rubber pad 16 .

The air return area 5 is provided with a purification device. The purification device includes a collection bottle 13 and a collection bottle installation hole 14 that is arranged at the bottom of the housing 3 and is threadedly connected to the collection bottle 13. The installation hole 14 is provided with a vertical The filter screen 15 of the return air direction, the width of the filter screen 15 is equal to the width of the return air area 5, the top of the filter screen 15 is in conflict with the top of the return air area 5, and the bottom of the filter screen 15 is in contact with the collection bottle The bottom of the 13 collided.

When the cleaning operation is performed, the wind direction switching baffle moves to the blowing area to block the connection between the blowing area and the connecting port. At this time, the suction fan sucks the dust from the brush. After the dust enters the return air area, it is first intercepted by the filter screen. The clean air passes through the filter and is continuously discharged by the suction fan. Since the air outlet of the suction fan is connected to the blowing area, a vent valve can be installed in the blowing area or connecting the air duct to balance the pressure. The intercepted dust enters the collection bottle for collection.

When the blowing operation is performed, move the wind direction switching baffle to the suction area to block the connection between the suction area and the connection port. At this time, the air discharged from the air outlet of the suction fan enters the blowing area, and the air in the blowing area is then transferred by the total The air duct blows out of the brush head.

The air suction pipe 8 is provided with a balance air hole 17 , and a wind deflector 18 for opening or closing the balance air hole 17 is inserted on the air suction pipe 8 . The suction fan 1 is provided with a hand-held handle 19 .

The steering rod includes a main rod 20 , a first steering rod 21 disposed at both ends of the main rod 20 and rotatably connected to the main rod 20 , and the tail of the first steering rod 21 is connected to the second steering rod through a rotating shaft 22 . 23. Both sides of the second direction changing rod 23 are rotatably connected with a third direction changing rod 24, and the bottom of the third direction changing rod 24 is rotatably connected to a commutator.

The rotation plane of the main rod 20 and the first direction change rod 21 , the rotation plane of the first direction change rod 21 and the second direction change rod 23 , and the rotation of the second direction change rod 23 and the third direction change rod 24 The planes are perpendicular to each other. The steering rod can realize the change of up and down, left and right, front and rear directions, convenient operation and strong practicability.

The outer walls of the suction fan 1, the commutator and the steering rod are all provided with insulating coatings. The insulating coating avoids electric shock accidents during operation and ensures safe operation.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A cleaning tool for secondary equipment of a transformer substation is characterized by comprising a suction fan (1), a commutator, a steering rod and a brush (2), wherein the commutator, the steering rod and the brush are sequentially communicated with the suction fan (1); a main air pipe penetrates through the steering rod, and an opening is formed in the main air pipe at the position of the brush (2).

2. A substation secondary equipment cleaning tool according to claim 1, characterized in that the commutator comprises a housing (3) and a partition plate (4) arranged inside the housing (3); the shell is divided into an air return area (5) and an air blowing area (6) by the partition plate (4), and an air return opening (7) is formed in the left end of the air return area (5); the air return opening (7) is communicated with an air suction opening of the suction fan (1) through an air suction pipe (8); an air outlet (9) is formed in the side part of the air blowing area (6), and the air outlet (9) is communicated with an air outlet of the suction fan (1); a connecting port (10) connected with a main air pipe is arranged at one end of the shell (3), and the connecting port (10) is communicated with the air return area (5) and the blowing area (6); the inner side of the connecting port (10) is provided with a track groove (11) which penetrates through the air return area (5) and the air blowing area (6), and a wind direction switching baffle plate (12) is arranged in the track groove (11).

3. The substation secondary equipment cleaning tool according to claim 2, wherein the wind direction switching baffle (12) is slidable in the track groove (11), and the width of the wind direction switching baffle (12) is larger than the width of the return air area (5) and larger than the width of the blowing area (6).

4. The cleaning tool for the secondary equipment of the transformer substation as claimed in claim 3, wherein a purification device is arranged in the return air area (5), the purification device comprises a collection bottle (13) and a collection bottle mounting hole (14) which is arranged at the bottom of the housing (3) and is in threaded connection with the collection bottle (13), a filter screen (15) perpendicular to the direction of return air wind is arranged in the mounting hole (14), the width of the filter screen (15) is equal to that of the return air area (5), the top of the filter screen (15) is abutted against the top of the return air area (5), and the bottom of the filter screen (15) is abutted against the bottom of the collection bottle (13).

5. A substation secondary equipment cleaning tool according to claim 4, characterized in that the bottom of the filter screen (15) is provided with a rubber pad (16).

6. The cleaning tool for the secondary equipment of the substation as claimed in claim 5, wherein the air suction pipe (8) is provided with a balance air hole (17), and a wind shield (18) for opening or closing the balance air hole (17) is inserted into the air suction pipe (8).

7. A substation secondary equipment cleaning tool according to claim 1, characterized in that a hand-held handle (19) is arranged on the suction fan (1).

8. The cleaning tool for the secondary equipment of the transformer substation as claimed in claim 1, wherein the steering rod comprises a main rod (20) and a first direction changing rod (21) which is arranged at two ends of the main rod (20) and is rotatably connected with the main rod (20), the tail of the first direction changing rod (21) is connected with a second direction changing rod (23) through a rotating shaft (22), two sides of the second direction changing rod (23) are rotatably connected with a third direction changing rod (24), and the bottom of the third direction changing rod (24) is rotatably connected with a commutator.

9. The cleaning tool for the secondary equipment of the substation as claimed in claim 8, wherein the planes of the rotation of the main rod (20) and the first direction changing rod (21), the planes of the rotation of the first direction changing rod (21) and the second direction changing rod (23), and the planes of the rotation of the second direction changing rod (23) and the third direction changing rod (24) are all perpendicular to each other.

10. A substation secondary equipment cleaning tool according to claim 1, characterized in that the outer walls of the suction fan (1), the commutator and the steering rod are provided with an insulating coating.

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