Anti-blocking self-cleaning vehicle and anti-blocking nozzle for transformer

Abstract

This invention relates to an anti-clogging self-cleaning vehicle and an anti-clogging nozzle for transformers. The vehicle includes an anti-clogging nozzle and a mounting housing, one end of which is matched with the transformer's heat sink. A spraying device is installed on the top of the mounting housing, comprising an upper spray pipe and a lower spray pipe. The upper spray pipe is equipped with several anti-clogging nozzles, all of which spray in a fountain-like manner. The lower spray pipe is equipped with several high-pressure nozzles, capable of intercepting willow catkins, dust, etc., by forming a water curtain, while simultaneously preventing nozzle clogging.

Description

Technical Field

[0001] This invention relates to an anti-clogging self-cleaning vehicle and an anti-clogging nozzle for transformers, belonging to the technical field of cleaning devices. Background Technology

[0002] Large transformers used in power grid transmission and distribution, including those with oil-immersed self-cooling (ONAN), oil-immersed air cooling (ONAF), forced oil circulation air cooling (OFAF), and forced guided oil circulation air cooling (ODAF), are susceptible to dust accumulation in spring. Willow catkins and environmental dust, along with negative pressure from the transformer's fans, are easily dispersed by the wind. Prolonged operation of the transformer with this accumulation hinders heat dissipation, leading to increased transformer oil temperature, overheating of the windings, accelerated insulation aging, and compromised safe and reliable operation. While conventional methods for cleaning the radiators include fire hoses and manual removal, fire hoses pose risks such as electric shock and mechanical injury due to pressure control issues. Manual cleaning is time-consuming, ineffective, labor-intensive, and carries the risk of falls from heights.

[0003] Chinese patent CN112768180A discloses a dry-type transformer with strong heat dissipation capacity. The transformer includes a housing, inside which a transformer body is housed. A motor is fixedly connected to the top of the housing, and a rotating plate is fixedly connected to the output end of the motor. A first sliding rod is rotatably connected to the front surface of the rotating plate. A dust cleaning device is provided on the front side of the housing, a second sliding track is opened on the front side of the housing, and a heat dissipation vent is provided on the front side of the housing. A dust cover is fixedly connected to the top of the housing. This dry-type transformer with strong heat dissipation capacity allows for manual cleaning of dust from the heat dissipation vent without the need for external tools to climb to a higher position. However, manual cleaning is still required, which is time-consuming and labor-intensive. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides an anti-clogging self-cleaning vehicle and an anti-clogging nozzle for transformers, which can intercept willow catkins, dust, etc. by forming a water curtain, while preventing the nozzle from clogging.

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

[0006] An anti-clogging nozzle includes a nozzle body with a spray nozzle, an air chamber inside the nozzle body, a vent pipe connected to the front end of the air chamber, and the vent hole of the vent pipe being flush with the water spray hole of the nozzle body; a pressure chamber connected to the other end of the air chamber, and the other end of the air chamber also connected to the interior of the nozzle body; an anti-clogging structure is provided inside the pressure chamber; the anti-clogging structure causes the pressure chamber to deform and compress the interior of the nozzle body to form a Venturi channel.

[0007] The gas chamber is equipped with a gas channel, one end of which is connected to a vent pipe, and the other end of which is connected to the air pressure chamber and the nozzle body through branches.

[0008] The anti-clogging structure includes a rubber diaphragm disposed inside the air pressure chamber, with its two ends fixed to the upper and lower ends of the air pressure chamber, respectively; a connector is provided on the side wall of the rubber diaphragm, with the other end of the connector abutting against the end wall of the air pressure chamber near the central axis of the nozzle body.

[0009] The connector is equipped with an arc-shaped top plate at its end. The arc surface of the arc-shaped top plate is oriented toward the central axis of the nozzle body, and the arc-shaped top plate abuts against the end wall of the air pressure chamber near the central axis of the nozzle body.

[0010] The air pressure chamber has an elastic wall at one end near the central axis of the nozzle body, and the space inside the elastic wall is filled with electrorheological liquid.

[0011] It also includes an activation device that provides an activation signal to the electrorheological fluid. The activation device includes a first electrode block disposed on the connector and a second electrode block disposed inside the pneumatic chamber. The second electrode block is disposed on the moving path of the connector.

[0012] A self-cleaning anti-clogging vehicle for transformers includes an anti-clogging nozzle and a mounting housing, one end of which is matched with the heat sink of the transformer. A spraying device is provided on the top of the mounting housing, the spraying device including an upper spray pipe and a lower spray pipe. The upper spray pipe is provided with a plurality of the anti-clogging nozzles, all of which spray in a fountain-like manner. The lower spray pipe is provided with a plurality of high-pressure nozzles.

[0013] The top end face of the mounting box is also provided with a controllable baffle assembly, and the spraying device is located on top of the controllable baffle assembly; the controllable baffle assembly includes several rotating baffles, which are rotatably disposed on the top end face of the mounting box, and one end of each of the rotating baffles is provided with a sprocket, which are connected by chain drive, and one end of one of the rotating baffles is provided with a rotating motor.

[0014] The installation box has a sewage collection tank recessed at the bottom, and the sewage collection tank is connected to a sewage discharge pipe.

[0015] The bottom of the mounting box is equipped with casters.

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

[0017] This invention features a self-cleaning anti-clogging vehicle that matches the heat sink of a transformer. This vehicle sprays water upwards in a fountain-like manner, creating a water curtain to intercept airborne catkins, dust, and other particles. The water is humidified and weighted, causing the particles to fall into the mounting housing and accumulate in a wastewater collection tank at the bottom. The wastewater is then discharged through a wastewater pipe and can be recycled. Simultaneously, the invention incorporates a controllable baffle assembly, allowing adjustment of the radiator's ventilation effect. A lower water spray pipe further cleans any catkins and other particles scattered on the controllable baffle assembly.

[0018] The invention also includes an anti-clogging nozzle. Utilizing the principle of air pressure, the negative pressure generated when the nozzle is clogged changes the gap in the internal wall of the anti-clogging nozzle, thereby forming a Venturi channel to accelerate the water flow and create a high-pressure jet that knocks away accumulated willow catkins and other debris. Attached Figure Description

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

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

[0021] Figure 3 This is a half-sectional view of the anti-clogging nozzle of the present invention;

[0022] Figure 4 This is a half-sectional view of the air pressure chamber of the anti-clogging nozzle of the present invention under normal pressure;

[0023] Figure 5 This is a half-sectional view of the anti-clogging nozzle air pressure chamber of the present invention under negative pressure;

[0024] Figure 6 This is a half-sectional view of the elastic wall surface 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 housing; 5. Upper spray pipe; 6. Lower spray pipe; 7. Rotating baffle; 8. Rotating motor; 21. Gas channel; 22. Vent pipe; 31. Rubber diaphragm; 32. Connector; 33. Elastic wall; 34. Electrorheological fluid; 35. Arc-shaped top plate; 36. First electrode block; 37. Second electrode block; 41. Sewage collection tank; 42. Sewage discharge pipe; 71. Sprocket; 72. Chain. Detailed Implementation

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

[0028] Please see Figures 1 to 6 The invention provides a technical solution:

[0029] A self-cleaning anti-clogging vehicle for transformers includes anti-clogging nozzles and a mounting housing 4, one end of which is matched with the transformer's heat sink. A spraying device is installed on the top of the mounting housing 4, comprising an upper spray pipe 5 and a lower spray pipe 6. The upper spray pipe 5 is equipped with several anti-clogging nozzles, with their outlets facing upwards, and all nozzles spray in a fountain-like manner. The lower spray pipe 6 is equipped with several high-pressure nozzles, with their outlets facing upwards. The upper and lower spray pipes 5 and 6 are connected to an external water pipe for water spraying.

[0030] A water curtain is formed on the top of the mounting box 4 by several anti-clogging nozzles spraying in a fountain-like manner. The spraying water curtain intercepts the willow catkins, dust and other particles floating in the air, and after they are humidified and weighed up, they fall into the interior of the mounting box 4 for collection, which can prevent them from affecting the heat dissipation of the transformer. At the same time, a collection cover can also be installed on the top of the mounting box 4 to prevent the sprayed water from being wasted and to prevent the willow catkins, dust and other particles from falling to the ground after being humidified and weighed up.

[0031] A controllable baffle assembly is also provided on the top end face of the mounting box 4, and the spray device is located on top of the controllable baffle assembly. The controllable baffle assembly includes several rotating baffles 7, which are rotatably mounted on the top end face of the mounting box 4. One end of each rotating baffle 7 is provided with a sprocket 71, which is connected by a chain 72. 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, which in turn drives the chain 72 to rotate, and then causes the remaining sprockets 71 and the rotating baffles 7 to rotate together. This allows the rotating baffles 7 to rotate 360°, while controlling the amount of cooling air intake. The willow catkins and coal dust that fall onto the rotating baffles 7 are washed by the lower spray pipe 6. The high-pressure nozzle of the lower spray pipe 6 sprays water and cleans the willow catkins and coal dust on the rotating baffles 7.

[0032] The bottom of the mounting box 4 is recessed and a sewage collection tank 41 is provided, and the sewage collection tank 41 is connected to a sewage discharge pipe 42. Water flowing into the bottom of the mounting box 4, as well as willow catkins and coal dust, enter the sewage discharge pipe 42 for further treatment and recycling.

[0033] Since willow catkins usually clump together and become heavier after being wetted, the humidified and heavier catkins and dust will fall off. In addition to falling inside the mounting box 4 and onto the rotating baffle 7, the humidified and heavier catkins and dust will also fall onto the outlet of the anti-clogging nozzle. Since the anti-clogging nozzles spray in a fountain style, they do not have the function of spraying away the larger catkins and dust, which will cause clogging. Therefore, this application also includes an anti-clogging nozzle.

[0034] An anti-clogging nozzle includes a nozzle body 1 with a spray nozzle. An air chamber 2 is located inside the nozzle body 1, and a vent pipe 22 is connected to the front end of the air chamber 2. The vent hole of the vent pipe 22 is flush with the water spray hole of the nozzle body 1. A gas channel 21 is located inside the air chamber 2. One end of the gas channel 21 is connected to the vent pipe 22, and the other end of the gas channel 21 is connected via branches to a pressure chamber 3 and the interior of the nozzle body 1. An anti-clogging structure is located inside the pressure chamber 3. This anti-clogging structure causes the pressure chamber 3 to deform and compress the interior of the nozzle body 1, forming a Venturi channel. Through the formed Venturi channel, the water flow velocity at normal speed is increased, forming a high-pressure jet, which can spray away accumulated and clogged willow catkins, dust, etc. at the end of the anti-clogging nozzle.

[0035] Specifically, the anti-clogging structure includes a rubber diaphragm 31 installed inside the air pressure chamber 3. The two ends of the rubber diaphragm 31 are fixed to the upper and lower ends of the air pressure chamber 3, respectively. That is, when the air pressure in the air pressure chamber 3 is stable, the rubber diaphragm 31 is flat. A connector 32 is provided on the side wall of the rubber diaphragm 31, and an arc-shaped top plate 35 is installed at the end of the connector 32. The arc surface of the arc-shaped top plate 35 faces the central axis of the nozzle body 1, and the arc-shaped top plate 35 abuts against the end wall of the air pressure chamber 3 near the central axis of the nozzle body 1. A gas channel 21 is located between the rubber diaphragm 31 and the end wall of the air pressure chamber 3 near the central axis of the nozzle body 1. When the water spray hole of the nozzle body 1 is blocked, the gas channel 21... When the air duct 22 is blocked, a negative pressure space is formed inside the air pressure chamber 3. This causes the rubber diaphragm 31 to deform into an arc shape toward the central axis of the nozzle body 1. The arc-shaped rubber diaphragm 31 will drive the connector 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, which slides to connect the connector 32, allowing the connector 32 to slide along a predetermined trajectory. As a result, the arc-shaped top plate 35 at the end of the connector 32 will abut against the end wall of the air pressure chamber 3 near the central axis of the nozzle body 1, causing the end wall of the air pressure chamber 3 near the central axis of the nozzle body 1 to deform. Two sets of the above structures are provided, which can form a Venturi channel under these circumstances.

[0036] Specifically, the end wall of the pressure chamber 3 near the central axis of the nozzle body 1 is an elastic wall 33, and the interior space of the elastic wall 33 is filled with an electrorheological fluid 34. It also includes an activation device that provides an activation signal to the electrorheological fluid 34. The activation device includes a first electrode block 36 mounted on the connector 32, and a second electrode block 37 disposed inside the pressure chamber 3, positioned along the movement path of the connector 32. As described above, when the connector 32 slides through the rubber diaphragm 31 and causes the elastic wall 33 to deform, the first electrode block 36 and the second electrode block 37 come into contact and activate, thus activating the electrorheological fluid 34 filled within the interior space of the elastic wall 33. 4. The electrorheological liquid 34 is a smart material that can change from a liquid state to a solid state under the action of an external electric field. By activating the first electrode block 36 and the second electrode block 37, the electrorheological liquid 34 changes to a solid state, which makes the venturi channel more stable. After the water flows through the venturi channel, it accelerates to form a high-pressure jet and knocks off the blocked nozzle body 1. Due to the adhesion of willow catkins and other debris, the willow catkins, dust and other debris on the vent pipe 22 are also carried away, which makes the internal negative pressure equal. At this time, the rubber diaphragm 31 returns to its original state and drives the connector 32 to move backward, so that the first electrode block 36 and the second electrode block 37 are separated and de-energized. The electrorheological liquid 34 changes to a liquid state again and returns to its original state.

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

[0038] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A clog-resistant nozzle, comprising a nozzle body (1) with a spray nozzle, characterized in that: The nozzle body (1) is provided with an air chamber (2) inside. The front end of the air chamber (2) is connected to an air pipe (22). The air hole of the air pipe (22) is flush with the water spray hole of the nozzle body (1). The other end of the air chamber (2) is symmetrically connected to two air pressure chambers (3), and the other end of the air chamber (2) is also connected to the inside of the nozzle body (1). The air pressure chamber (3) is provided with an anti-clogging structure. The anti-clogging structure causes the air pressure chamber (3) to deform and squeeze the inside of the nozzle body (1) to form a Venturi channel. The anti-clogging structure includes a rubber diaphragm (31) provided inside the air pressure chamber (3). The two ends of the rubber diaphragm (31) are fixedly provided to the upper end and the lower end of the air pressure chamber (3), respectively. The side wall of the rubber diaphragm (31) is provided with a connector (32). The other end of the connector (32) abuts against the air pressure chamber (3). The end wall of the connector (32) is close to the central axis of the nozzle body (1); an arc-shaped top plate (35) is installed at the end of the connector (32), the arc surface of the arc-shaped top plate (35) is set towards the central axis of the nozzle body (1), and the arc-shaped top plate (35) abuts against the end wall of the air pressure chamber (3) close to the central axis of the nozzle body (1); the end wall of the air pressure chamber (3) close to the central axis of the nozzle body (1) is an elastic wall (33), and the space inside the elastic wall (33) is filled with electrorheological liquid (34); it also includes an activation device, which provides an activation signal for the electrorheological liquid (34), the activation device includes a first electrode block (36) set on the connector (32), a second electrode block (37) is set inside the air pressure chamber (3), and the second electrode block (37) is set on the moving path of the connector (32).

2. The anti-clogging nozzle as described in claim 1, characterized in that: The gas chamber (2) is provided with a gas channel (21). One end of the gas channel (21) is connected to the air pipe (22), and the other end of the gas channel (21) is connected to the air pressure chamber (3) and the nozzle body (1) through branches respectively.

3. A self-cleaning vehicle for transformers to prevent clogging, characterized in that: The device includes an anti-clogging nozzle as described in any one of claims 1-2, and also includes a mounting housing (4), one end of which is matched with the heat sink of the transformer; a spraying device is provided on the top of the mounting housing (4), the spraying device includes an upper spray pipe (5) and a lower spray pipe (6), the upper spray pipe (5) is provided with a plurality of the anti-clogging nozzles, all of which spray in a fountain style, and the lower spray pipe (6) is provided with a plurality of high-pressure nozzles.

4. The anti-clogging self-cleaning vehicle for transformers as described in claim 3, characterized in that: The top end face of the mounting box (4) is also provided with a controllable baffle assembly, and the spraying device is located on the top of the controllable baffle assembly; the controllable baffle assembly includes several rotating baffles (7), the rotating baffles (7) are rotatably disposed on the top end face of the mounting box (4), and one end of several rotating baffles (7) is provided with a sprocket (71), the several sprockets (71) are connected by a chain (72), and one end of one of the rotating baffles (7) is provided with a rotating motor (8).

5. The anti-clogging self-cleaning vehicle for transformers as described in claim 4, characterized in that: The bottom of the installation box (4) is recessed and a sewage collection tank (41) is provided, and the sewage collection tank (41) is connected to a sewage discharge pipe (42).

6. The anti-clogging self-cleaning vehicle for transformers as described in claim 5, characterized in that: The bottom of the mounting box (4) is equipped with casters.

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