Hydro-generator stator bar protection device controller

Abstract

A hydro-generator stator bar protection device controller comprises a tooth-shaped air bag, the tooth-shaped air bag is composed of a connecting air bag and tooth portion air bags which are vertically connected and communicated with the tooth-shaped air bag, a plurality of tooth portion air bags which are evenly distributed are distributed on the connecting air bag, bar clamping gaps are formed between adjacent tooth portion air bags, the tooth-shaped air bag is provided with an inflation port, and the inflation port is communicated with the tooth portion air bags. The inflation port is connected with an air pump through an inflation pipeline; an air pressure sensor is arranged at the output end of the air pump and connected with the controller, and the controller controls starting and stopping of the air pump. The winding bars are contained in the winding bar clamping gaps between the adjacent tooth portion air bags, one tooth-shaped air bag can conduct protection operation on the multiple winding bars at the same time, the winding bars are clamped through air pressure of the air bags, and the protection effect is achieved. The working state of the device is detected by arranging the pressure sensor, and the working mode of the air pump is controlled by arranging the high-pressure sensor, the low-pressure sensor and the energy accumulator, so that the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment of a hydro-generator, in particular to a controller for a stator wire bar protection device of a hydro-generator. Background Art

[0002] When performing maintenance work on the stator wire rods of the turbine, the wire rods need to be coated with insulating glue and paint. After the glue and paint coating work, the excess glue and paint material attached to the wire rods will flow down along the wire rods until it falls on the floor of the work area, making it difficult to clean the work site. At the same time, the glue and paint that falls on the bottom of the wire rods will form drops, affecting the coating effect of the insulating paint. When the maintenance of the wire rods is completed, if the stator assembly has not been completed, the wire rods cannot be placed in the stator. The on-site placement and protection of the wire rods also become a major maintenance problem. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a controller for a stator wire rod protection device of a hydro-generator, so as to solve the protection problem when the wire rod is operated and control the operation of the protection device.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] The controller of the stator wire rod protection device of the hydro-turbine generator includes a toothed airbag, which is composed of a connecting airbag and a tooth airbag vertically connected thereto. A plurality of evenly distributed tooth airbags are distributed on the connecting airbag, and a wire rod clamping gap is formed between adjacent tooth airbags. Gas is filled into the toothed airbags to clamp the adjacent tooth airbags to the wire rod, thereby preventing glue and paint from flowing downwards.

[0006] The toothed airbag is provided with an inflation port, which is connected to the air pump via an inflation pipeline.

[0007] An air pressure sensor is provided at the output end of the air pump, and the air pressure sensor is connected to a controller, and the controller controls the start and stop of the air pump.

[0008] The air pump input end is connected to the air intake filter.

[0009] The above-mentioned air pressure sensor includes a high-pressure sensor and a low-pressure sensor. An accumulator is provided on the pipeline at the output end of the air pump. The high-pressure sensor and the low-pressure sensor are electrically connected to the input end of the analog module, and the analog module is communicatively connected to the controller.

[0010] The output end of the controller is electrically connected to an intermediate relay, and the start and stop of the air pump is controlled by the intermediate relay.

[0011] The above controller is connected to the human-machine interaction screen HMI for communication.

[0012] The toothed airbag is composed of a plurality of layered air chambers which are layered up and down, and the gases between adjacent layered air chambers are isolated.

[0013] Each of the above-mentioned stratified air chambers is provided with an air charging port, which is connected in parallel to an air pump through a pipeline.

[0014] The inflation port is located on the toothed airbag connecting one of the two ends of the airbag.

[0015] The utility model provides a controller for a stator wire rod protection device of a hydro-turbine generator. The wire rod clamping gap between adjacent tooth airbags is used to accommodate the wire rods. One toothed airbag can perform protection operations on multiple wire rods at the same time. The air pressure of the airbag is used to clamp the wire rods to achieve a protection effect. The working state of the pressure sensor detection device is set, and the working mode of the air pump is controlled by setting high-pressure and low-pressure sensors and an accumulator, so that the working life of the air pump is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of the wire rod protection device of the utility model;

[0018] Figure 2 It is a schematic diagram of the wire rod in the protection state;

[0019] Figure 3 This is a connection diagram of the air pump;

[0020] Figure 4 This is the electrical schematic diagram of the controller.

[0021] In the figure: toothed airbag 1, connecting airbag 2, tooth airbag 3, wire rod clamping gap 4, inflation port 5, air pump 6, stratified air chamber 7, wire rod 8, air intake filter 9, air pressure sensor 10, controller 11, analog module 12, human-machine interaction screen HMI13, intermediate relay 14, high-pressure sensor 15, low-pressure sensor 16, accumulator 17. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown in the figure, a stator wire rod protection device for a hydro-turbine generator which is easy to operate comprises a toothed airbag 1, wherein the toothed airbag 1 is composed of a connecting airbag 2 and a toothed airbag 3 which are vertically connected to each other, a plurality of evenly distributed toothed airbags 3 are distributed on the connecting airbag 2, and a wire rod clamping gap 4 is formed between adjacent toothed airbags 3. Gas is filled into the toothed airbag 1 so that adjacent toothed airbags 3 clamp the wire rod 8, thereby preventing glue and paint from flowing downward.

[0023] By utilizing the wire rod clamping gaps 4 between adjacent tooth airbags 3 to accommodate the wire rods, one tooth airbag 1 can perform protection operations on multiple wire rods at the same time.

[0024] The toothed airbag 1 is provided with an inflation port 5 , and the inflation port 5 is connected to an air pump 6 through an inflation pipeline.

[0025] An air pressure sensor 10 is provided at the output end of the air pump 6 . The air pressure sensor 10 is connected to a controller 11 . The controller 11 controls the start and stop of the air pump 6 .

[0026] The air pressure sensor 10 is used to check whether the pump air system is working normally. If the working air pressure cannot be reached, it means that a leak has occurred, and the controller 11 can issue an alarm.

[0027] The input end of the air pump 6 is connected to the air intake filter 9 .

[0028] The above-mentioned air pressure sensor 10 includes a high-pressure sensor 15 and a low-pressure sensor 16. An accumulator 17 is provided on the output pipeline of the air pump 6. The high-pressure sensor 15 and the low-pressure sensor 16 are electrically connected to the input end of the analog module 12, and the analog module 12 is communicatively connected to the controller 11.

[0029] By setting a high-pressure sensor 15, a low-pressure sensor 16 and an accumulator 17, the controller 11 can start the air pump 6 when the system output pressure is lower than the set pressure of the low-pressure sensor 16, and stop the air pump when it is higher than the set pressure of the high-pressure sensor 15. When the pressure is between the high-pressure sensor 15 and the low-pressure sensor 16, the accumulator 17 maintains the pressure, so that the air pump 6 does not need to work all the time, reducing the working time and the number of starts and stops, and extending the service life of the equipment.

[0030] The output end of the controller 11 is electrically connected to an intermediate relay 14 , and the start and stop of the air pump 6 are controlled by the intermediate relay 14 .

[0031] The controller 11 is connected to the human-machine interaction screen HMI13 for communication.

[0032] The toothed airbag 1 is composed of a plurality of layered air chambers 7 which are layered up and down, and the gases between adjacent layered air chambers 7 are isolated.

[0033] like Figure 1 As shown in FIG, by dividing the toothed airbag 1 into a plurality of isolated layered air chambers 7, it is possible to prevent the damage of a certain part of the airbag from causing the overall failure of the airbag.

[0034] Each of the above-mentioned stratified air chambers 7 is provided with an air charging port 5 , which is connected in parallel to an air pump 6 through a pipeline.

[0035] The inflation port 5 is located on the toothed airbag 3 connected to one of the two ends of the airbag 2 .

[0036] By arranging the inflation port 5 at the toothed airbag 3 connected to one end of the airbag 2, it is convenient to connect the air pump 6 and also convenient to place the wire rod 8 into the wire rod clamping gap 4.

[0037] Example:

[0038] A wire rod protection device consists of a layered toothed air bag and an air pump.

[0039] Layered serrated airbag: It is mainly composed of several stacked airbags. The airbag chambers are not connected. The airbag layering is mainly considered when the wire rod is processed. The height of the protection required for each processing step is inconsistent. The layered design can freely adjust the airbag height.

[0040] Air pump: used to inflate the airbag.

[0041] Working principle: When protecting the wire rod, according to the required protection height of the wire rod, the toothed airbag is inflated with an air pump. The toothed airbag will fit tightly with the edge of the wire rod to ensure that the glue and paint will not flow to the protection area during the wire rod processing and will not loosen after the inflation is completed. The airbag material has certain characteristics. First, the airbag is integrally formed without seams; second, it is flexible and foldable, which is convenient for passing through the gap between the upper and lower wire rods during the protection process; third, the airbag does not stick to the epoxy glue and insulating paint and other materials used in the wire rod processing. After the wire rod processing is completed, the gas in the airbag is released and the airbag is pulled out to ensure that the airbag is not damaged or left over due to adhesion; fourth, the airbag material has the characteristics of corrosion resistance and puncture resistance, which ensures that the airbag is not damaged due to accidental contact with tools during the wire rod processing, causing protection failure.

Claims

1. A controller for a stator bar protection device of a hydro-generator, characterized in that: The toothed airbag (1) comprises a connecting airbag (2) and a toothed airbag (3) connected vertically thereto, a plurality of toothed airbags (3) are evenly distributed on the connecting airbag (2), a wire rod clamping gap (4) is formed between adjacent toothed airbags (3), and gas is filled into the toothed airbag (1) so that the adjacent toothed airbags (3) clamp the wire rod (8), thereby preventing the glue and paint from flowing downwards; The toothed airbag (1) is provided with an inflation port (5), and the inflation port (5) is connected to an air pump (6) via an inflation pipeline; An air pressure sensor (10) is provided at the output end of the air pump (6); the air pressure sensor (10) is connected to a controller (11); and the controller (11) controls the start and stop of the air pump (6).

2. The controller for the stator bar protection device of a hydro-turbine generator according to claim 1, characterized in that: The input end of the air pump (6) is connected to the air intake filter (9).

3. The controller for the stator bar protection device of a hydro-generator according to claim 2, characterized in that: The air pressure sensor (10) comprises a high-pressure sensor (15) and a low-pressure sensor (16); an accumulator (17) is provided on the output pipeline of the air pump (6); the high-pressure sensor (15) and the low-pressure sensor (16) are electrically connected to the input end of the analog module (12); and the analog module (12) is communicatively connected to the controller (11).

4. The controller for the stator bar protection device of a hydro-turbine generator according to claim 3, characterized in that: The output end of the controller (11) is electrically connected to an intermediate relay (14), and the start and stop of the air pump (6) is controlled by the intermediate relay (14).

5. The controller for the stator bar protection device of a hydro-generator according to claim 4, characterized in that: The controller (11) is communicatively connected to a human-machine interaction screen HMI (13).

6. The controller for the stator bar protection device of a hydro-turbine generator according to claim 5, characterized in that: The toothed airbag (1) is composed of a plurality of layered air chambers (7) layered in upper and lower layers, and the gases between adjacent layered air chambers (7) are isolated.

7. The controller for the stator bar protection device of a hydro-generator according to claim 6, characterized in that: Each of the stratified air chambers (7) is provided with an air charging port (5), which is connected in parallel to an air pump (6) through a pipeline.

8. The controller for the stator bar protection device of a hydro-generator according to claim 1, characterized in that: The inflation port (5) is located on the toothed airbag (3) connected to one of the two ends of the airbag (2).

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