Anti-blocking self-cleaning vehicle and anti-blocking spray head for transformer

Abstract

The invention relates to an anti-blocking self-cleaning vehicle and an anti-blocking sprayer for a transformer, the anti-blocking self-cleaning vehicle comprises the anti-blocking sprayer and further comprises a mounting box body, and one end of the mounting box body is matched with a cooling fin of the transformer; a spraying device is arranged at the top of the mounting box body and comprises an upper spraying pipe and a lower spraying pipe, the upper spraying pipe is provided with a plurality of anti-blocking sprayers, the anti-blocking sprayers are all in a fountain type spraying mode, the lower spraying pipe is provided with a plurality of high-pressure sprayers, catkins, dust and the like can be intercepted by forming a water curtain, and the catkins, the dust and the like can be prevented from being blocked. Meanwhile, the nozzle can be prevented from being blocked.

Description

Technical Field

[0001] The invention relates to an anti-blocking self-cleaning vehicle and an anti-blocking nozzle for a transformer, belonging to the technical field of cleaning devices. Background Art

[0002] For large transformers such as oil-immersed self-cooling (ONAN), oil-immersed air cooling (ONAF), forced oil circulation air cooling (OFAF), and forced guided oil circulation air cooling (ODAF) used in power transmission and distribution and power production, under strong wind conditions in spring, the catkins produced by willow trees and impurities such as ash coal dust in the environment are blown everywhere by the wind. At the same time, the negative pressure conditions generated when the transformer fan is running are superimposed, which are easy to adhere to the heat sink of the transformer. When the transformer is running for a long time, the heat dissipation is blocked due to the accumulation of foreign matter, which can easily cause the transformer oil temperature to rise, thereby causing the transformer winding to overheat, and then affecting the accelerated aging of the transformer insulation, affecting the safe and reliable operation of the equipment; for catkins and ash coal dust attached to the radiator, fire water flushing and manual cleaning methods are usually adopted. When using fire water flushing, the water pressure is difficult to control, which can easily cause unsafe factors such as electric shock and mechanical injury. Manual brush cleaning takes a long time, has poor results, and is labor-intensive. There is also a safety hazard of falling from heights.

[0003] Chinese patent CN112768180A discloses a dry-type transformer with strong heat dissipation capability, including a shell, a transformer body is arranged inside the shell, a motor is fixedly connected to the top of the shell, a rotating plate is fixedly connected to the output end of the motor, a first slide bar is rotatably connected to the front surface of the rotating plate, a dust cleaning device is arranged on the front side of the shell, a second slideway is opened on the front side of the shell, a heat dissipation port is arranged on the front side of the shell, and a dust cover is fixedly connected to the top of the shell. For the dry-type transformer with strong heat dissipation capability, manual cleaning of the dust on the heat dissipation port does not require the use of external auxiliary tools to climb to a higher place, but manual cleaning is still required, which takes a long time and has high labor intensity. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an anti-blocking self-cleaning vehicle and an anti-blocking nozzle for a transformer, which can intercept catkins, dust, etc. by forming a water curtain and prevent the nozzle from being blocked.

[0005] The technical solution of the present invention is as follows:

[0006] A blockage-proof nozzle comprises a nozzle body with an injection port, an air chamber being arranged inside the nozzle body, a vent pipe being connected to the front end of the air chamber, the vent hole of the vent pipe being flush with the water spray hole of the nozzle body; the other end of the air chamber is connected to an air pressure chamber, and the other end of the air chamber is also connected to the inside of the nozzle body; an anti-blockage structure is arranged inside the air pressure chamber; the anti-blockage structure causes the air pressure chamber to deform and squeeze the inside of the nozzle body to form a Venturi channel.

[0007] A gas channel is provided inside the air chamber, one end of the gas channel is connected to the ventilation pipe, and the other end of the gas channel is connected to the air pressure chamber and the inside of the nozzle body through branches.

[0008] Among them, the anti-blocking structure includes a rubber diaphragm arranged inside the air pressure chamber, and the two ends of the rubber diaphragm are respectively fixed to the upper end and the lower end of the air pressure chamber; the side wall of the rubber diaphragm is provided with a connector, and the other end of the connector abuts against the end wall of the air pressure chamber close to the central axis of the nozzle body.

[0009] Wherein, an arc-shaped top plate is installed at the end of the connecting body, the arc surface of the arc-shaped top plate is arranged toward the central axis of the nozzle body, and the arc-shaped top plate abuts against an end wall of the air pressure chamber close to the central axis of the nozzle body.

[0010] Wherein, the wall surface of one end of the air pressure chamber close to the central axis of the nozzle body is an elastic wall surface, and the inner space of the elastic wall surface is filled with electrorheological fluid.

[0011] It also includes an activation device, which provides an activation signal for the electrorheological fluid. The activation device includes a first electrode block arranged on the connector, and a second electrode block is arranged inside the air pressure chamber. The second electrode block is arranged on the moving path of the connector.

[0012] A self-cleaning vehicle for transformer anti-blocking, comprising an anti-blocking nozzle as described in any one of claims 1 to 6, and also comprising a mounting box, one end of which matches the heat sink of the transformer; a spray device is arranged on the top of the mounting box, the spray device comprises an upper spray pipe and a lower spray pipe, the upper spray pipe is provided with a plurality of the anti-blocking nozzles, all of which spray in a fountain-like manner, and the lower spray pipe is provided with a plurality of high-pressure nozzles.

[0013] Among them, a controllable baffle assembly is also provided on the top end surface of the installation box, and the spray device is located on the top of the controllable baffle assembly; the controllable baffle assembly includes a plurality of rotating baffles, and the rotating baffles are rotatably arranged on the top end surface of the installation box, and a sprocket is provided at one end of the plurality of rotating baffles, and the plurality of sprockets are connected by chain transmission, and a rotating motor is provided at the end of one of the rotating baffles.

[0014] Wherein, a sewage collection pool is provided in a downwardly recessed bottom end of the installation box, and the sewage collection pool is connected to a sewage discharge pipe.

[0015] Wherein, universal wheels are arranged at the bottom of the installation box.

[0016] The present invention has the following beneficial effects:

[0017] The present invention is equipped with an anti-blocking self-cleaning vehicle matched with the heat sink of the transformer, and the anti-blocking self-cleaning vehicle sprays water upward in a fountain-like manner to form a water curtain to intercept catkins, dust and the like floating in the air, so that the catkins, dust and the like are humidified and weighted and fall into the installation box, and are accumulated in the sewage collection pool at the bottom, and are processed together with the sewage discharge pipe, and can be recycled again; at the same time, the present invention also arranges a controllable baffle assembly, and the ventilation effect of the radiator can be adjusted by adjusting the controllable baffle assembly; and a lower water spray pipe is provided to clean the catkins and the like scattered on the controllable baffle assembly;

[0018] At the same time, the present invention is also provided with an anti-blocking nozzle, which uses the principle of air pressure to generate negative pressure when the nozzle is blocked, thereby changing the gap between the internal walls of the anti-blocking nozzle, thereby forming a Venturi channel to accelerate the water flow, so that it forms a high-pressure jet to fly away accumulated dirt such as catkins. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the transformer anti-blocking self-cleaning vehicle of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the controllable baffle assembly of the transformer anti-blocking self-cleaning vehicle of the present invention;

[0021] Figure 3 A half-section diagram of the anti-clogging nozzle of the present invention;

[0022] Figure 4 It is a half-section diagram of the air pressure chamber of the anti-clogging nozzle of the present invention at normal pressure;

[0023] Figure 5 It is a half-section diagram of the anti-blocking nozzle of the present invention when the air pressure chamber is under negative pressure;

[0024] Figure 6 A half-section view of the elastic wall of the anti-clogging nozzle of the present invention

[0025] The reference numerals in the figure are as follows:

[0026] 1. Nozzle body; 2. Air chamber; 3. Air pressure chamber; 4. Mounting box; 5. Upper spray pipe; 6. Lower spray pipe; 7. Rotating baffle; 8. Rotating motor; 21. Gas channel; 22. Ventilation pipe; 31. Rubber diaphragm; 32. Connector; 33. Elastic wall; 34. Electrorheological fluid; 35. Arc top plate; 36. First electrode block; 37. Second electrode block; 41. Sewage collection tank; 42. Sewage discharge pipe; 71. Sprocket; 72. Chain. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figures 1 to 6 , the invention provides a technical solution:

[0029] A blocking prevention self-cleaning vehicle for transformers, comprising a blocking prevention nozzle and a mounting box 4, one end of which matches the heat sink of the transformer; a spray device is arranged on the top of the mounting box 4, the spray device comprises an upper spray pipe 5 and a lower spray pipe 6, the upper spray pipe 5 is provided with a plurality of blocking prevention nozzles, the water outlets of the blocking prevention nozzles face upwards, and the blocking prevention nozzles all spray in a fountain-like manner, the lower spray pipe 6 is provided with a plurality of high-pressure nozzles, the water outlets of the high-pressure nozzles face upwards; the upper spray pipe 5 and the lower spray pipe 6 spray water through an external water pipe;

[0030] A water curtain is formed on the top of the installation box 4 by a plurality of anti-blocking nozzles spraying in a fountain-like manner. The flying water curtain intercepts catkins, dust, etc. floating in the air, and makes them fall into the interior of the installation box 4 for collection after humidification and weight increase, so as to avoid affecting the heat dissipation of the transformer; at the same time, a collection cover can also be provided on the top of the installation box 4 to avoid wasting the sprayed water flow and preventing catkins, dust, etc. from falling to the ground at will after humidification and weight increase;

[0031] A controllable baffle assembly is also provided on the top end surface of the installation box 4, and a spray device is located on the top of the controllable baffle assembly; the controllable baffle assembly includes a plurality of rotating baffles 7, which are rotatably arranged on the top end surface of the installation box 4, and a sprocket 71 is provided at one end of the plurality of rotating baffles 7, and the plurality of sprockets 71 are connected by a chain 72 for transmission, and a rotating motor 8 is provided at the end of one of the rotating baffles 7; the rotating motor 8 drives one of the rotating baffles 7 to rotate, thereby driving the chain 72 to rotate, and then the remaining sprockets 71 and the rotating baffle 7 are rotated together, so that the rotating baffle 7 can rotate 360°, and the cooling and heat dissipation air volume can be controlled at the same time; the catkins and ash coal dust falling on the rotating baffle 7 are washed by the lower spray pipe 6, and the high-pressure nozzle of the lower spray pipe 6 sprays water and cleans the catkins and ash coal dust on the rotating baffle 7;

[0032] The bottom of the installation box 4 is concave downward to form a sewage collection tank 41, and the sewage collection tank 41 is connected to a sewage discharge pipe 42; the water flow, catkins, ash and coal dust falling into the bottom of the installation box 4 enter the sewage discharge pipe 42 for reprocessing, recycling, etc.;

[0033] Since catkins are usually piled together and will become humidified and heavier after being wetted, the catkins, dust, etc. will fall off after being humidified and heavier. In addition to falling into the installation box 4 and the rotating baffle 7, the catkins, dust, etc. after being humidified and heavier will also fall to the water outlet of the anti-clogging nozzle. Since the anti-clogging nozzles spray in a fountain-like manner, they do not have the function of spraying away heavier catkins, dust, etc., and blockages will occur. Therefore, the present application also includes an anti-clogging nozzle.

[0034] A blockage-proof nozzle, comprising a nozzle body 1 with a spray port, an air chamber 2 being arranged inside the nozzle body 1, a vent pipe 22 being connected to the front end of the air chamber 2, and the vent hole of the vent pipe 22 being flush with the water spray hole of the nozzle body 1; a gas channel 21 being arranged inside the air chamber 2, one end of the gas channel 21 being connected to the vent pipe 22, and the other end of the gas channel 21 being connected to an air pressure chamber 3 and the inside of the nozzle body 1 through branches; an anti-blockage structure being arranged inside the air pressure chamber 3; the anti-blockage structure causing the air pressure chamber 3 to deform and squeeze the inside of the nozzle body 1 to form a Venturi channel; the formed Venturi channel causing the water flow speed ejected at a conventional speed to be accelerated to form a high-pressure jet, thereby spraying away catkins, dust, etc. accumulated and blocked at the end of the blockage-proof nozzle;

[0035] Specifically, the anti-blocking structure includes a rubber diaphragm 31 arranged inside the air pressure chamber 3, and the two ends of the rubber diaphragm 31 are respectively fixed to the upper end and the lower end of the air pressure chamber 3, that is, when the air pressure in the air pressure chamber 3 is in a stable state, the rubber diaphragm 31 is in a flat plate shape; the side wall of the rubber diaphragm 31 is provided with a connector 32, and the end of the connector 32 is installed with an arc-shaped top plate 35, the arc surface of the arc-shaped top plate 35 is arranged toward the central axis of the nozzle body 1, and the arc-shaped top plate 35 is against the end wall surface of the air pressure chamber 3 close to the central axis of the nozzle body 1; the gas channel 21 is arranged between the rubber diaphragm 31 and the end wall surface of the air pressure chamber 3 close to the central axis of the nozzle body 1. When the water spray hole of the nozzle body 1 is blocked, the gas channel 21 The air pipe 22 is blocked together, thereby forming a negative pressure space inside the air pressure chamber 3, so that the rubber diaphragm 31 is deformed toward the central axis of the nozzle body 1 to form an arc, and the arc-shaped rubber diaphragm 31 will drive the connecting body 32 to move toward the central axis of the nozzle body 1. At the same time, the air pressure chamber 3 can also be provided with a sliding frame, and the connecting body 32 is slidably connected by the sliding frame, so that the connecting body 32 can slide along a predetermined trajectory, and then the arc-shaped top plate 35 at the end of the connecting body 32 will reach the end wall of the air pressure chamber 3 close to the central axis of the nozzle body 1, so that the end wall of the air pressure chamber 3 close to the central axis of the nozzle body 1 is deformed; the above structure is relatively arranged in two groups, and a Venturi channel can be formed in this case;

[0036] Specifically, the wall surface of one end of the air pressure chamber 3 close to the central axis of the nozzle body 1 is an elastic wall surface 33, and the internal space of the elastic wall surface 33 is filled with an electrorheological fluid 34; it also includes an activation device, the activation device provides an activation signal for the electrorheological fluid 34, the activation device includes a first electrode block 36 arranged on the connecting body 32, and a second electrode block 37 is arranged inside the air pressure chamber 3, and the second electrode block 37 is arranged on the moving path of the connecting body 32; as in the above case, when the connecting body 32 slides through the rubber diaphragm 31 and pushes the elastic wall surface 33 to deform, at this time, the first electrode block 36 and the second electrode block 37 touch and activate, and activate the electrorheological fluid 34 filled in the internal space of the elastic wall surface 33. 4. The electrorheological fluid 34 is an intelligent material that can be transformed from liquid to solid under the action of an external electric field. The electrorheological fluid 34 is transformed into a solid state by activating the first electrode block 36 and the second electrode block 37, so that the Venturi channel can be stabilized. After the water flows through the Venturi channel, it accelerates to form a high-pressure jet and knocks down the blocked nozzle body 1. Due to the adhesion of catkins, the catkins, dust and other garbage on the ventilation pipe 22 are taken away together, so that the internal negative pressure can be balanced. At this time, the rubber diaphragm 31 returns to its original state and drives the connector 32 to retreat, that is, the first electrode block 36 and the second electrode block 37 are separated and powered off, and the electrorheological fluid 34 is converted into a liquid again, and the original state can be restored.

[0037] As a preferred embodiment, a filter screen is covered at the port of the vent pipe 22 , and the outer periphery of the filter screen is in contact with the inner wall surface of the nozzle body 1 . The filter screen can prevent catkins from entering only from the inside of the nozzle body 1 without blocking the port of the vent pipe 22 .

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A blockage-proof nozzle, comprising a nozzle body (1) having a spray port, characterized in that: An air chamber (2) is arranged inside the nozzle body (1), and the front end of the air chamber (2) is connected to a vent pipe (22), and the vent hole of the vent pipe (22) is flush with the water spray hole of the nozzle body (1); the other end of the air chamber (2) is connected to an air pressure chamber (3), and the other end of the air chamber (2) is also connected to the inside of the nozzle body (1); an anti-blocking structure is arranged inside the air pressure chamber (3); the anti-blocking structure causes the air pressure chamber (3) to deform and squeeze the inside of the nozzle body (1) to form a Venturi channel.

2. The anti-clogging nozzle according to claim 1, characterized in that: A gas channel (21) is provided inside the gas chamber (2), one end of the gas channel (21) is connected to the ventilation pipe (22), and the other end of the gas channel (21) is connected to the air pressure chamber (3) and the inside of the nozzle body (1) through branches.

3. The anti-clogging nozzle according to claim 2, characterized in that: The anti-blocking structure comprises a rubber diaphragm (31) arranged inside the air pressure chamber (3), and the two ends of the rubber diaphragm (31) are respectively fixed to the upper end and the lower end of the air pressure chamber (3); the side wall of the rubber diaphragm (31) is provided with a connector (32), and the other end of the connector (32) abuts against an end wall surface of the air pressure chamber (3) close to the central axis of the nozzle body (1).

4. The anti-clogging nozzle according to claim 3, characterized in that: An arc-shaped top plate (35) is installed at the end of the connecting body (32), and the arc surface of the arc-shaped top plate (35) is arranged toward the central axis of the nozzle body (1). The arc-shaped top plate (35) abuts against an end wall of the air pressure chamber (3) close to the central axis of the nozzle body (1).

5. The anti-clogging nozzle according to claim 4, characterized in that: The wall surface at one end of the air pressure chamber (3) close to the central axis of the nozzle body (1) is an elastic wall surface (33), and the internal space of the elastic wall surface (33) is filled with electrorheological fluid (34).

6. The anti-clogging nozzle according to claim 5, characterized in that: The invention also includes an activation device, which provides an activation signal for the electrorheological fluid (34). The activation device includes a first electrode block (36) arranged on the connecting body (32). A second electrode block (37) is arranged inside the air pressure chamber (3). The second electrode block (37) is arranged on the moving path of the connecting body (32).

7. An anti-blocking self-cleaning vehicle for transformers, characterized in that: It comprises an anti-blocking nozzle as described in any one of claims 1 to 6, and also comprises a mounting box (4), one end of which matches the heat sink of the transformer; a spray device is arranged on the top of the mounting box (4), and the spray device comprises an upper spray pipe (5) and a lower spray pipe (6), and the upper spray pipe (5) is provided with a plurality of the anti-blocking nozzles, and the anti-blocking nozzles all spray in a fountain-like manner, and the lower spray pipe (6) is provided with a plurality of high-pressure nozzles.

8. The anti-blocking self-cleaning vehicle for transformers according to claim 7, characterized in that: The top end surface of the installation box (4) is also provided with a controllable baffle assembly, and the spray device is located on the top of the controllable baffle assembly; the controllable baffle assembly comprises a plurality of rotating baffles (7), the rotating baffles (7) are rotatably arranged on the top end surface of the installation box (4), and a sprocket (71) is arranged at one end of the plurality of rotating baffles (7), and the plurality of sprockets (71) are connected in transmission via a chain (72), and a rotating motor (8) is arranged at the end of one of the rotating baffles (7).

9. The anti-blocking self-cleaning vehicle for transformers according to claim 8, characterized in that: The bottom end of the installation box (4) is recessed downwards to form a sewage collection pool (41), and the sewage collection pool (41) is connected to a sewage discharge pipe (42).

10. The anti-blocking self-cleaning vehicle for transformers according to claim 9, characterized in that: The bottom of the installation box (4) is provided with universal wheels.

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