JP2011233393A - Insulator cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulator cleaning device having a simple structure, enabling switching between cleaning and testing and enabling confirmation and inspection of the condition of cleaning water ejected from a nozzle part before cleaning an insulator with the cleaning water actually sent out from the nozzle part.SOLUTION: The nozzle part 4 which ejects the cleaning water of the insulator cleaning device 1 is provided on the surface extending along an axial direction of a nozzle installation pipe 21 close to the insulator 3 out of pipings 7 through which the cleaning water is sent, and the nozzle installation pipe 21 having this nozzle part 4 swings integrally with the nozzle part 4 along a peripheral direction of the piping 7d against a portion other than the nozzle installation pipe 21 out of the piping 7d.

Description

  The present invention relates to an insulator cleaning device that prevents insulator damage and corona noise of insulators by washing insulators used outdoors in power facilities such as power plants and substations in a live line state, for example.

  In power facilities such as power stations and substations near the coast, salt damage accidents may occur, such as seawater rolled up by strong winds sticking to the insulators of circuit breakers placed outdoors, resulting in poor insulation. For example, it is known as shown in paragraph number “0002” of Patent Document 1.

  In addition, contaminants such as sea salt particles and dust in the atmosphere easily adhere to the surface of the insulator, and water droplets and the like adhere to the insulator surface in a state of being contaminated with this contaminant, so that corona discharge occurs on the insulator. It is known that corona noise may occur due to this corona discharge, as shown in paragraph “0002” of Patent Document 2, for example.

  For this reason, as shown in Patent Document 3, a permanent insulator cleaning apparatus that cleans the surface of the insulator and removes seawater and contaminants from the insulator by spraying a cleaning liquid such as water from the nozzle portion onto the insulator. It is already known.

  On the other hand, a certain standard is set for the prevention of accidents due to the cleaning of the insulator with respect to the specific resistance value and hydraulic pressure of the cleaning liquid discharged to the insulator. However, in a permanent insulator cleaning device, rusting may occur or foreign matter may adhere to the piping due to operation for many years. It is conceivable that the value is lower than the standard when passing through the pipe even if the value is initially the standard. When the insulator is cleaned using the cleaning liquid whose specific resistance value is lower than the reference value, there arises a disadvantage that inconveniences such as a decrease in insulator insulation are caused. However, it is easy to judge whether the specific resistance value of the cleaning liquid is lower than the standard when it is sprayed from the nozzle part of the insulator cleaning device unless it is actually released and visually checked and inspected. Not.

  For this reason, in Patent Document 3 described above, a branch pipe is provided via a three-way valve at a midpoint of a rising pipe arranged along the substation equipment among the pipes extending from the liquid storage tank to the nozzle part, that is, near the nozzle part. The pipe is connected, and the branch pipe extends downward and has a discharge port at the tip. Thus, when testing the state of the cleaning liquid sprayed from the nozzle unit, the switching handle is operated to switch the three-way valve from the direction in which the cleaning liquid ascends the rising pipe to the nozzle unit side to the branch pipe. It is possible to visually check and inspect the cleaning liquid discharged from the branch pipe outlet.

JP-A-5-325689 JP 200623086 A JP 2001-67961 A

  However, in the structure of the water discharge test apparatus for insulator washing shown in Patent Document 3, the structure for switching between washing and testing is complicated by using a three-way valve or a switching handle. In the case of attaching to the insulator cleaning device, there is a problem that the manufacturing cost of the insulator cleaning device as a whole becomes relatively high, and the operation of attaching the three-way valve or the like to the insulator cleaning device becomes complicated.

  In addition, when inspecting the cleaning liquid sprayed from the nozzle part before cleaning, rather than checking and inspecting the state of the cleaning liquid discharged from the branch pipe branched in the middle, the state of the cleaning liquid actually delivered from the nozzle part Confirmation and inspection are closer to the actual operation of the insulator cleaning device.

  Therefore, the present invention makes it possible to switch between cleaning and testing with a simple structure, and the state of the cleaning body discharged from the nozzle unit is actually sent from the nozzle unit before cleaning the insulator. An object of the present invention is to provide an insulator cleaning device that can be checked and inspected with a cleaning solution.

  The insulator cleaning device according to the present invention is an insulator cleaning device that cleans the insulator by discharging the cleaning liquid toward one or more insulators arranged outdoors, and is a tank capable of storing the cleaning liquid. And a nozzle part for injecting the cleaning liquid into the insulator, a pump for pumping up the cleaning liquid in the tank and sending it to the nozzle part side, and a pipe for appropriately connecting the tank, the pump and the nozzle part. The nozzle portion is provided on a surface extending along the axial direction of a portion of the pipe that is close to the insulator, and the pipe provided with the nozzle portion includes a part of the pipe. The nozzle installation pipe is formed by joining in the middle of the pipe, and the nozzle installation pipe can rotate integrally with the nozzle portion along the circumferential direction of the pipe with respect to a portion of the pipe other than the nozzle installation pipe. It is characterized in that it (claim 1). Here, the insulator placed outdoors includes, for example, an insulator placed outdoors in a power facility such as a power generation substation. The rotation of the nozzle installation pipe includes a case where the nozzle installation pipe rotates 360 ° with respect to other parts of the pipe and a case where the nozzle installation pipe swings so as to draw an arc. The cleaning liquid is, for example, cleaning water. Furthermore, the insulator can be cleaned in a live line state, for example.

  And in the insulator washing | cleaning apparatus which concerns on this invention, the edge part of the said nozzle installation pipe | tube is joined to the edge part of piping joined to this via the loosely-joinable joining means, By loosening the said joining means, The nozzle installation pipe and the nozzle section provided on the nozzle installation pipe can be rotated along the circumferential direction of the pipe. By tightening the joining means, the nozzle installation pipe and the nozzle section provided on the nozzle installation pipe can be rotated. The rotation is restricted (claim 2).

As a result, when discharging the cleaning liquid from the nozzle part to the insulator, the angle of the nozzle part provided in the nozzle installation pipe is confirmed, and the angle of the nozzle part is determined to be inappropriate for injecting the cleaning liquid to the insulator. In this case, the joining means is loosened, the nozzle installation tube is rotated, the nozzle part is adjusted to an angle suitable for spraying the cleaning liquid onto the insulator, and then the joining means is tightened to maintain the angle of the nozzle part. The operation is performed.
Also, during the test for checking and inspecting the state of the cleaning liquid delivered from the nozzle part, the angle of the nozzle part provided in the nozzle installation pipe is confirmed and the angle of the nozzle part is directed upward from the horizontal direction. If judged, loosen the joining means and rotate the nozzle installation tube, adjust the nozzle part to an appropriate angle so that it is below the horizontal direction, and if possible, directly below, then tighten the joining means. An operation of maintaining the angle of the nozzle portion is performed.

  Here, the nozzle part may have a branch pipe part whose tip is branched into a plurality, and a nozzle may be attached to each tip of the branch pipe part. Further, the fastening of the joining means is performed by an operation of rotating the union nut (claim 4).

  As described above, according to the present invention, the nozzle installation pipe provided with the nozzle portion in the vicinity of the pipe insulator is joined in the middle of the pipe, and the nozzle installation pipe and the pipe nozzle Since it is configured to join the part other than the installation pipe with the joining means, the structure for testing the state of the cleaning liquid sprayed from the nozzle part becomes a simple structure and easily with respect to the existing insulator cleaning apparatus Since it can be assembled, an increase in cost can be suppressed.

  Moreover, according to the present invention, since the angle of the nozzle part is directed downward from the horizontal direction and the state of the cleaning liquid sent from the nozzle part is confirmed and inspected, in a manner close to the actual operation of the insulator cleaning device, It becomes possible to test the state of the cleaning liquid before cleaning the insulator.

FIG. 1 is a schematic diagram of the overall configuration of the insulator cleaning apparatus. FIG. 2 is an explanatory view showing an example of a configuration in which the nozzle portion of the insulator cleaning device according to the present invention is provided in the vicinity of the insulator of the pipe. Fig.3 (a) is a partially broken sectional view which shows the structure of the nozzle of a nozzle part, FIG.3 (b) is a top view of the said nozzle. FIG. 4 is an explanatory view showing that the nozzle portion of the insulator cleaning device according to the present invention is rotatable. Fig.5 (a) is a partially broken sectional view which shows the other structure of the nozzle of a nozzle part, FIG.5 (b) is a top view of the said nozzle.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows an example of an overall configuration of an insulator cleaning apparatus 1 of a type that cleans insulators by washing with water. The insulator cleaning apparatus 1 includes a tank 2 that is a water tank filled with cleaning water, and each insulator 3. A plurality of nozzles 4 for discharging or jetting cleaning water, a pump device 6 having a pump 5 for pumping the cleaning water in the tank 2 and supplying it to the nozzle unit 4, a tank 2, a pump 5, and a pump 5, It has at least a pipe 7 for connecting each nozzle part 4 as appropriate.

  The tank 2 is for temporarily storing wash water taken from a predetermined water source 8, and a water intake pipe 9 for sending wash water from the water source 8 to the tank 2 between the water source 8 and the tank 2. And an on-off valve 10 is provided on the side of the tank 2 of the intake pipe 9 so that the amount of washing water sent from the water source 8 to the tank 2 can be adjusted.

  In the reservoir of the tank 2, one end of the pipe 7 is arranged so that the other end of the pipe 7 a connected to the pump 5 is submerged to a deep water depth. This pipe 7 a The end portion disposed in the tank 2 has a filter portion 11 for removing dust and the like in the tank 2.

  Although not shown, a device for monitoring the water level of the wash water in the tank 2 may be installed in the tank 2.

  In this embodiment, the pump device 6 includes a pump 5, a motor 14 that supplies power to the pump 5, a gate valve 15, a check valve 16, and an automatic valve 17 in a pump chamber 13. Yes. The pump 5 is connected to the end of the pipe 7a drawn into the pump chamber 13 on the side opposite to the filter unit 11, and the pump 5, the gate valve 15, the check valve 16, and the automatic valve 17 are The pipes 7b are sequentially connected. Although not shown, the pump device 6 may have a drainage channel for discharging the cleaning water in the pump chamber 13 out of the pump chamber 13.

  The pump device 6 has a pipe 7 c drawn out of the pump chamber 13 from the automatic valve 17, and the pipe 7 c has a partition valve 12 in the middle of the path outside the pump chamber 13. The pipe 7c is not shown in the figure, but in order to recirculate the cleaning water to the tank 2 after adjusting the pressure at the site closer to the automatic valve 17 than the gate valve 12 in the path outside the pump chamber 13, the pressure adjusting unit is provided in the middle. And a pipe having a downstream end reaching the tank 2 may be branched.

  Further, in this embodiment, the pipe 7 is branched into, for example, four pipes 7d on the downstream side of the cleaning water from the gate valve 12, and the gate valves 18d are respectively provided on the upstream side of the cleaning water. The automatic valves 19 are sequentially arranged. And the nozzle part 4 for discharging | emitting or injecting wash water to the insulator 3 is arrange | positioned in the downstream of wash water rather than the automatic valve 19 of each piping 7d. In this embodiment, one nozzle part 4 is arranged for one insulator 3, but the present invention is not limited to this. For example, even if a plurality of nozzle parts 4 are arranged for one insulator 3, Conversely, one nozzle portion 4 may be arranged for a plurality of insulators 3.

  According to the insulator cleaning apparatus 1 having such a configuration, the gate valve 15, the automatic valve 17, the gate valve 12, the gate valve 18 and the automatic valve 19 are all opened, and the pump 5 is operated by the motor 14. Wash water taken from 8 and stored in the tank 2 is sent in the order of the pipes 7a, 7b, 7c, and then flows through the four branched pipes 7d to be discharged from the nozzle unit 4 to the insulator 3. It is possible to wash the insulator 3 by being sprayed.

  By the way, the nozzle part 4 is provided in the circumferential surface extended along the axial direction of the said piping 7d of the nozzle installation pipe | tube 21 which comprises some piping 7d, as FIG.2 and FIG.4 shows. In this embodiment, as shown in FIGS. 3 and 4, after extending along the radial direction of the nozzle installation pipe 21, it branches off along the axial direction of the nozzle installation pipe 21, and further nozzle installation. A branch pipe portion 22 extending in the radial direction of the pipe 21 and a nozzle 23 attached to the tips of two extending portions of the branch pipe portion 22 are configured.

  Although the nozzle 23 itself is a known one, this configuration example will be described with reference to FIG. 3. An opening 24 into which the branch pipe portion 22 can be inserted is provided on one side and a strainer is provided on the opposite side of the opening 24. Nozzle base 26 having 25, and a nozzle main body which is connected to this nozzle base 26 through an O-ring 27 in an airtight manner and has a spray port 28 for spraying cleaning water on the side opposite to the nozzle base 26 side. 29. In this embodiment, a plurality of spray ports 30 having an inner diameter smaller than the inner diameter of the spray port 28 are opened so as to surround the spray port 28.

  And the nozzle installation pipe | tube 21 in which this nozzle part 4 was provided is joined to the piping 7d located in the both sides of the longitudinal direction of the said nozzle installation pipe | tube 21 via a joining means, as FIG. 4 shows. Thus, only the nozzle installation pipe 21 can rotate along the circumferential direction of the pipe 7d under a predetermined condition. Hereinafter, an example of this joining means will be described with reference to FIG.

  The means for joining the nozzle installation pipe 21 and the pipe 7d basically includes an insertion portion 32, a flange 33, a joint portion 34, and a union nut 39.

  The insertion portions 32 are provided on both sides of the nozzle installation tube 21 in the axial direction, and the outer diameter size thereof is smaller than the outer diameter size of the other portion (non-insertion portion) of the nozzle installation tube 21 and the joint portion of the pipe 7d. The inner diameter dimension of 34 is substantially the same.

  The flange 33 is formed at the boundary between the insertion portion 32 and the non-insertion portion of the nozzle installation tube 21, and the outer diameter dimension thereof is substantially the same as the outer diameter dimension of the joint portion 34.

  The joint portion 34 is formed with a thread groove 35 extending from the end on the nozzle installation tube 21 side of the outer surface of the pipe 7d to a predetermined range, and the end surface in the longitudinal direction can be in contact with the vertical surface of the flange 33. The inner surface can contact the outer surface of the insertion portion 32 in a freely rotatable manner.

  The union nut 39 has an inner diameter that is substantially the same as the outer diameter of the small-diameter hole 36 having the same inner diameter as that of the non-insertion portion of the nozzle installation pipe 21 and the flange 33 of the nozzle installation pipe 21 and the joint 34 of the pipe 7d. And a large-diameter hole 38 in which a screw groove 37 that can be engaged with the screw groove 35 of the joint portion is formed. Accordingly, a step is formed at the boundary between the small-diameter hole 36 and the large-diameter hole 38. The rising surface on the side opposite to the joint portion 34 of the flange 33 can be brought into contact with this stepped surface, and the end surface of the joint portion 34 and the rising surface of the flange 33 are connected to each other by piping 7d. It is possible to press-contact along the axial direction.

  As a result, the union nut 39 is rotated and moved to the right in FIG. 4 from the state shown in FIG. 4 to loosen, thereby releasing the state in which the joint 34 and the flange 33 are press-contacted along the axial direction of the pipe 7d. Thus, the nozzle installation pipe 21 can be rotated within a range of 360 ° in the clockwise and counterclockwise directions along the circumferential direction of the pipe 7d with respect to the pipe 7d joined thereto. Become. On the other hand, by rotating the union nut 39 and moving it to the left in FIG. 4 to return to the tightened state in FIG. 4, the joint 34 and the flange 33 are again pressed together along the axial direction of the pipe 7 d. It will be in the state.

  According to the above, the nozzle installation pipe 21 provided with the nozzle portion 4 is rotated along the circumferential direction of the pipe 7d only by a combination of the operation of rotating the union nut 39 in a predetermined direction to be loosened and the operation of tightening. After the nozzle part 4 is directed downward from the horizontal direction, the state of the nozzle part 4 can be maintained. Therefore, before the washing water is discharged or jetted to the insulator 3, the state of the washing water is changed. It is possible to check and inspect with the cleaning water actually delivered from the spray ports 28 and 30 of each nozzle 23 of the nozzle unit 4.

  Then, the nozzle installation pipe 21 provided with the nozzle portion 4 is moved in the direction opposite to the previous direction along the circumferential direction of the pipe 7d by performing a combination of the operation of rotating and loosening in a predetermined direction and the operation of tightening again. The angle of the nozzle portion 4 can be maintained after the nozzle portion 4 is turned to the angle toward the insulator 3.

  That is, the switching between the test of the cleaning water state and the discharge (injection) of the cleaning water is basically performed only by rotating the union nut 39, and can be performed by a relatively simple operation. Is possible. In addition, since the joining means between the pipe 7d and the nozzle installation pipe 21 has a relatively simple structure, an increase in cost of the insulator cleaning device 1 as a whole can be suppressed.

  FIG. 5 shows another embodiment of the configuration of the nozzle 23 ′ of the nozzle portion 4. Hereinafter, the configuration of the nozzle 23 'will be described with reference to FIG. However, the same components as those in the previous embodiment are basically denoted by the same reference numerals and description thereof is omitted.

  The nozzle 23 ′ includes a nozzle base 26 having an opening 24 and a strainer 25, and a nozzle body 29 that is connected to the nozzle base 26 through an O-ring 27 in an airtight manner. However, the nozzle body 29 is different from the nozzle 23 in that the nozzle body 29 does not have the spray port 28 and many spray ports 30 having an inner diameter smaller than the spray port 28 are opened.

  Even in the nozzle installation pipe 21 in which the nozzle portion 4 having such a nozzle 23 ′ is formed, the nozzle 23 shown in FIG. 3 is provided by providing the joining means shown in FIG. 4 with the pipe 7 d. The same effects as when used can be obtained.

DESCRIPTION OF SYMBOLS 1 Insulator washing | cleaning apparatus 2 Tank 3 Insulator 4 Nozzle part 5 Pump 6 Pump apparatus 7 (7a thru | or 7d) Pipe 21 Nozzle installation pipe 22 Branch pipe part 23 Nozzle 23 'Nozzle 32 Insertion part 33 Flange 34 Joint part 35 Screw groove 36 Small diameter hole Part 37 thread groove 38 large diameter hole 39 union nut

Claims (4)

An insulator cleaning device for cleaning the insulator by discharging a cleaning liquid toward one or more insulators arranged outdoors,
A tank capable of storing a cleaning liquid, a nozzle part for injecting the cleaning liquid to the insulator, a pump for pumping up the cleaning liquid in the tank and sending it to the nozzle part side, and between the tank, the pump and the nozzle part And piping to connect as appropriate,
The nozzle portion is provided on a surface extending along the axial direction of a portion of the pipe adjacent to the insulator, and the pipe provided with the nozzle portion is a nozzle installation pipe forming a part of the pipe. The nozzle installation pipe is configured to rotate integrally with the nozzle portion along the circumferential direction of the pipe with respect to a portion of the pipe other than the nozzle installation pipe. An insulator cleaning device. The end of the nozzle installation pipe is joined to the end of the pipe to be joined thereto via a loosely joining means,
By loosening the joining means, the nozzle installation pipe and the nozzle portion provided on the nozzle installation pipe can be rotated along the circumferential direction of the pipe. By tightening the joining means, the nozzle installation pipe and this The insulator cleaning apparatus according to claim 1, wherein the rotation of the nozzle portion provided in the nozzle is restricted.   3. The insulator according to claim 1, wherein the nozzle portion has a branch pipe portion whose tip is branched into a plurality of portions, and a nozzle is attached to each tip of the branch pipe portion. 4. Cleaning device. The insulator cleaning apparatus according to any one of claims 1 to 3, wherein the joining means is tightened or loosened by an operation of rotating a union nut.

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