KR920008195B1 - Apparatus pouring into oil in vacuum - Google Patents

Abstract

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Description

Vacuum oiling device for electric equipment

1 is a view showing a combined state of a moving means, a decompression device and a lubrication device of a vacuum lubrication device for an electric machine embodied by the present invention.

FIG. 2 is a side view of the vacuum oiling device for the electric machine, in which the pressure reducing device and the oiling device of FIG. 1 are removed and enlarged.

3 is a plan view showing a part of the vacuum lubrication device broken.

4 is a schematic plan view taken along line IV-IV of FIG.

5 is an enlarged side view of the pin connecting mechanism provided in the apparatus shown in FIG.

6 is a plan view of an assembly line having the same vacuum lubrication device.

7 to 10 are schematic side views showing different operating states of the vacuum oiling apparatus.

11 is a view corresponding to FIG. 2 showing a modification of the present invention.

The present invention relates to a device for manufacturing an inflow electrical equipment by injecting insulating oil under reduced pressure in an enclosure accommodating the main body of a transformer or a capacitor. A vacuum oiling device for an electric machine formed by a pressure reducing tank having an opening.

In general, in case of lubricating the transformer main body accommodating the transformer main body in order to manufacture the inflow transformer, for example, the transformer is placed in the pressure reducing tank and decompressed and dehumidified from the transformer main body by depressurizing the tank. Oiling is performed on the transformer enclosure. In this case, in the case of medium and small transformers, a batch process is called batch processing, in which a transformer sent from an assembly line is sequentially put into a pressure reducing tank, and a method of carrying out a decompression operation and a lubrication operation filled with a certain number is adopted.

In such a conventional method, the waiting time until the required number of transformers are filled in the pressure reduction tank is very long on the transformer assembly line. In the subsequent decompression operation, the decompression tank takes a long time to accommodate a large number of transformers. Moreover, oiling under reduced pressure is carried out one by one, which greatly increases the waiting time for workers to catch on the next stroke.

A first object of the present invention is to provide an improved vacuum lubrication device for electric equipment to be lubricated, that is, to perform degassing on a workpiece, decompression operation for dehumidification, and lubrication operation continuously one or several times. have.

The second object of the present invention is to reduce the pressure on a certain object and to perform the post-work for sending the already completed main work to the next processing workshop during the main operation and the pre-work for oiling the subsequent work object. The present invention provides an improved vacuum lubrication device for electric machines.

The vacuum lubrication apparatus according to the present invention includes first and second pressure reducing tanks for placing the workpiece for lubricating the electric equipment to be lubricated, that is, the workpiece under reduced pressure, and these tanks are for entering and exiting the workpiece. The openings are arranged to face each other. The doors are provided between the openings of these tanks so as to be movable in the opposite directions, and the doors can alternately open and close each opening of both tanks by reciprocating movement by the moving means. In addition, both sides of this door are provided with a conveyance table which enters and exits through each opening of each of the pressure reducing tanks according to the reciprocating movement. By this conveyance table, a workpiece is carried in and out of each tank for pressure reduction, and the opening and closing of the tank for pressure reduction by a door is performed simultaneously. Degassing and lubrication of the workpiece is carried out in a pressure reducing tank sealed by a door.

According to the vacuum lubrication apparatus of the present invention as described above, the pressure reducing tank has a small volume for storing one or several workpieces, the installation space may be small, and the pressure reduction operation time is shortened. After decompression and lubrication operation can be carried out continuously for one or several workpieces, and during the decompression and lubrication operation of one workpiece, necessary for pre-operation such as preparation for lubrication on the other workpiece and lubrication leave. You can work at the same time.

Further objects of the present invention will become apparent when the illustrated embodiments to be described are now understood, and are described in the appended claims. And various advantages not described herein will occur when those skilled in the art actually apply the present invention.

Embodiments of the present invention will be described below with reference to the drawings. The vacuum lubrication device 1 of this embodiment is fitted in one step of the inlet transformer assembly line as shown in FIG. That is, in FIG. 6, 2 is a conveyor for carrying the transformer main body 3, which is a coil and a core, and this transformer main body 3 is assembled in an enclosure 5 carrying the roller conveyor 4th position to become a transformer 6, which is also a roller conveyor 4 Is sent to the vacuum lubrication device 1. In this vacuum apparatus 1, oiling operation is carried out to the transformer 6 under pressure_reduction | reduced_pressure mentioned below, and is sent to the next test site 7 through the roller conveyor 8.

Next, this vacuum oiling apparatus 1 is described in detail.

In Figs. 1 and 2, 9 is a first pressure reducing tank, 10 is a second pressure reducing tank, all of which have openings 9a and 10a for entering and exiting the workpiece on one side thereof, and these openings 9a and 10a are mutually different. It is installed on the support 11 opposite. In both tanks 9 and 10, as shown in FIG. 1, the decompression means, that is, the vacuum pump 12 passes through the pipe 13, but the gas suction operation in the tanks 9 and 10 is controlled by a control valve (not shown). Each can be performed independently. In addition, in each of the pressure reduction tanks 9 and 10, oil supply hoses 14 and 15 constituting the oil supply means are provided, and these hoses 14 and 15 communicate with the storage tank 17 via a pipe 16. The storage tank 17 is supplied with insulating oil from an oil source (not shown) via a degasser 18. Although the illustration is omitted in this case, the oil supply to each oil supply hoses 14 and 15 can be performed independently through a control valve.

As shown in FIG. 2 to FIG. 5, a moving means, or a trolley 19, is provided between the first pressure reducing tank 9 and the second pressure reducing tank 10, as shown in FIGS. It is possible to reciprocate in the opposite directions of these 9,10.

In this trolley | bogie 19, the plate-shaped door 21 larger than opening part 9a, 10a of pressure reduction tanks 9 and 10 is erected. This door 21 contacts the opening 9a of the first decompression tank 9 when the trolley 19 moves (reciprocates) a predetermined distance in the direction of arrow 22a, closes it, and moves it in the direction of arrow 22b (backward). It touches the opening part 10a and closes it. The periphery of the opening of these tanks 9 and 10 is attached with the packing 23 for improving the sealing property with the door 21. As shown in FIG. The first and second carrier tables 24 and 25 are provided on both sides of the door 21 so as to allow the aforementioned work object 6 to enter and exit the pressure reducing tanks 9 and 10. Each of these carriers 24,25 has a base 27,28, one end of which is connected to both sides of the door 21 via a pin connection mechanism 26, and the other end of each of these carriers 27,28 passes through a car 29 for each pressure reducing tank 9,10. It is supported on the bottom plates 9b and 10b in a movable manner, that is, to be movable. Thus, these treadmills 27 and 28 alternately enter and exit the door 21 and into the decompression tanks 9 and 19 according to the reciprocating movement of the trolley 19. On each of these mounting bases 27 and 28, a plurality of rotating members, that is, conveying roller groups 30, which are rotated and rotated in a direction perpendicular to the opposite direction of the openings 9a and 10a of the pressure reducing tanks 9 and 10, are installed. The height of the carriers 24 and 25 including 30 is predetermined at the same height as the roller conveyors 4 and 8 mentioned above.

On the other hand, as shown in FIG. 6, the workpiece 6 sent to the roller conveyor 4 is transferred to the carriers 24 and 25, and from there to the roller conveyor 8 phase, between the two sides of the carrier movement zone and the roller conveyors 4 and 8, respectively. As shown in FIG. 3 and FIG. 4, movable tables 31 and 32 are provided. Each of these movable tables 31 and 32 is provided with a roller group 33 on each of its upper surfaces to easily move the workpiece 6. Each of these movable tables 31 and 32 is pivotally connected to the roller conveyor 4 side on the import side and the roller conveyor 8 side on the export side via the axis 34, respectively, and is equipped with an air cylinder 35, respectively. Each is rotated upwards from the horizontal state around axis 34 to allow the switching operation from the non-horizontal state, for example to the vertical state. Movable tables 31 and 32 are avoided from colliding with door 21 reciprocated by trolley 19 as long as it is in this vertical position.

In addition, the pin connection mechanism 26 mentioned above is comprised as shown in FIG. In other words, the joint pieces 38, 37, which are attached to both sides of the door 21 by means of welding, are provided with two slender grooves 36,37 having a through hole 35, and fixed to the distal end side of the mounting table 27,28 constituting the carrier tables 24,25. 39 is fitted with pin 40 and is loosely inserted into each through hole 35 of the support hole 36,37 which was pinned. That is, the diameter of the through hole 35 is larger than the diameter of the pin 40.

In this embodiment, as the moving means of the above-described trolley | bogie 19, the motor-driven chain mechanism 41 is equipped as shown schematically in FIG.

Next, operations of the apparatus will be described with reference to FIGS. 7 to 10. The state shown in FIG. 7 shows that the preceding work piece 6a is stored in the first pressure reducing tank 9 and is under reduced pressure operation, the subsequent work piece 6b is placed on the second carrier 25 and the filling hose 15 is inserted into the enclosure 5. Indicates the standby state. In the state shown in FIG. 7, the trolley | bogie 19 is moved to the arrow 42 direction when oiling operation under reduced pressure to the workpiece 6a in the 1st pressure reduction tank 9 is completed. In this case, as shown in FIG. 8, the second carrier 25 on which the workpiece 6b is placed enters the second pressure reducing tank 10, and at the same time, the first carrier 24 on which the workpiece 6a is removed is the first pressure reducing tank 10. It contacts the opening 10a of and closes it. As a result, the workpiece 6b is pulled out of the second pressure reducing tank 9. The door 21 is stored in the second pressure reducing tank 10 and sealed by the door 21. In this state, a well-known operation, ie, the tank 10 is reduced in pressure, and oiling operation is performed.

In the meantime, the workpiece 6a drawn from the first pressure reducing tank 9 is removed from the main oil hose, 14, and then moved to the roller conveyor 30 on the first carrier 24 through the 32nd platform to the roller conveyor 8 on the carrying out side. Do post-work. Subsequently, as shown in FIG. 9, 6c is placed on the new workpiece, as shown in FIG. 9 on the import side, from the roller conveyor 4 on the import side to the first carrier 24 via the movable platform 31, and to the oiling hose to enclosure 5. We perform all works such as 14 shovels. When oiling of the workpiece 6b in the second pressure reducing tank 10 is completed, the trolley 19 is moved in the direction of arrow 43 (see FIG. 10). As a result, as shown in FIG. 10, the second pressure reducing tank 10 is opened by the door 21, the workpiece 6b is drawn out, and at the same time, the workpiece 6c is brought into the first pressure reducing tank 9, and the tank 9 is closed by the door 21. do. Then, the same operation as in the above is repeated.

Therefore, according to this vacuum lubrication apparatus 1, the post-operation and subsequent work, such as carrying out work to the next process of the workpiece under which the pressure reduction lubrication operation was completed by the other pressure reduction tank while carrying out the pressure reduction lubrication operation in one pressure reduction tank, It is possible to carry out the preliminary work for decompression operation of the workpiece. Therefore, according to this apparatus, the decompression operation of the workpiece, that is, the transformer, can be carried out continuously, and the volume of the decompression tank is smaller than that of the batch treatment type device, so that the decompression operation time is short and the waiting time of the operator is inevitable. Shorten the work efficiency.

In the depressurization operation as described above, the door 21 is integrally moved with the trolley 19 to be pressed against the openings 9a and 10a of the pressure reducing tanks 9 and 10 to hermetically close and seal the door 21. If it is not completely perpendicular to each other, partial contact with the peripheral edges of the openings 9a and 10a of the pressure reducing tanks 9 and 10 may result in partial gaps between the two, resulting in a poor sealing of the tank.

In order to prevent this, the door 21 must be firmly connected by welding, etc., in a perfectly perpendicular position to the bogie 19, which is easy. This tight connection, however, avoids this because the door is partially contacted due to deviations in the horizontality of the rail 20 or between the rail 20 and the inner bottoms 9b, 10b of the decompression tanks 9, 10, due to inequality. High dimensional accuracy is required for the component.

₁,

₂로 나타냄과 같이 약간 좌우로 기울일 수 있으므로 대차 19와 더불어 이동하는 것만으로 감압용 탱크 9,10의 개구부 9a,10a의 전 둘레에 틈이 없게 접할 수가 있다. 단 문 21의 이 경사각이 너무 크면 중량물이므로 그 중심의 편재에 의하여 대차 19의 이동성이 악화되고 또 위험성도 증가한다. 그러나 이 문 21의 기울려 움직임은 문 21의 연결편 38의 상하각부 38a,38b와의, 맞닿음에 의하여 정지되므로 그 경사각

₁,

₂는 제5도에 나타냄과 같이 관통공 35와 핀 40과의 접점 40a에서 연결편 38을 상하로 나누는 칫수 D,E(단, B,C는 연결편 38의 두께(상하칫수)A를 관통공 35의 중심에서 2등분하는 칫수) 그 접점 40a로 부터 연결편 39의 선단까지의 칫수 F 및 그 선단과 문 21면과의 사이틈의 칫수 t를 적절히 선정함으로써 호적의 치로 제한할 수 있다. 여기에서

₁,은 근사적으로,

로 구해진다. 또 이것을 달성시키는 구성에 있어서도 핀 연결기구이므로 극히 간단하다.In this situation, according to the above configuration of the present invention employing the pin connecting mechanism 26, the airtight closing action of the pressure reducing tanks 9 and 10 by the door 21 is obtained without requiring high dimensional accuracy of the component. That is, as shown in FIG. 5 (in the following description, for convenience, one side of the carrier table 24 is handled), the pin 40 fixed to the connecting piece 38 on the carrier table 36 is formed in the through hole 35 formed in the support hole 36 attached to the door 21. Since the diameter is smaller than the inner diameter of

₁ ,

Since it can be inclined a little from side to side as shown by ₂ , it can be contacted without the clearance around the front part of opening part 9a, 10a of pressure reduction tanks 9 and 10 only by moving with trolley | bogie 19. However, if this inclination angle in paragraph 21 is too large, it is a heavy object, and the mobility of the trolley 19 is deteriorated and the risk is increased due to the ubiquity of the center. However, the tilting movement of the door 21 is stopped by contact with the upper and lower angle parts 38a, 38b of the connecting piece 38 of the door 21, so the inclination angle

₁ ,

₂ shows dimensions D and E dividing the connecting piece 38 up and down at the contact 40a between the through hole 35 and the pin 40, as shown in FIG. 5 (where B and C are the through holes 35 of the thickness (up and down dimension) A of the connecting piece 38). Dimensions dividing into two at the center of) The dimension F between the contact point 40a and the tip of the connecting piece 39 and the dimension t between the tip and the door 21 can be limited to the size of the family register. From here

₁ , is approximate

Obtained by Moreover, also in the structure which achieves this, it is extremely simple since it is a pin connection mechanism.

Moreover, according to the specific structure mentioned above, the opening part 9a, 10a of the 1st and 2nd pressure reduction tanks 9 and 10 opposes across the conveyance paths 4 and 8 of an assembly line, and the conveyance paths 4 and 8 of an assembly line, and a conveyance table. As a result of 25 and 25 having approximately the same height, it is easy to take over the workpiece between the assembly line and the vacuum oiling device.

The Rowley group 30, which is axially rotated on the carrier table 24,25 in a direction substantially perpendicular to the opposite direction of the openings 9a, 10a of the tanks 9,10, takes over the workpiece between the assembly line and the carrier table 24,25. In addition to facilitating the work, the workpiece is unnecessarily moved in the inertia toward the deep walls in tanks 9 and 10 to prevent accidents from colliding with it.

In the present invention, the supporting and moving means of the door 21 is not limited to the bogie structure described above, and may be configured to hang the door 21 on a moving member supported on the ceiling of a factory.

Moreover, it is preferable to provide a clamping device for further enhancing the airtightness between the door 21 and the opening of the pressure reducing tank.

In FIG. 11, the modification of this invention is shown with the same code | symbol in the same part as FIG. The door 44 in this variant consists of two door members 46, 47 which are opposed to each other via a plurality of connecting spacers 45, and the general door member 46 opens or closes the opening 9a of the first pressure reducing tank 9. The other door member 47 is folded and folded to open and close the opening 10a of the second pressure reducing tank 10.

Claims (9)

Vacuum lubricating device for electric machines having a pressure reducing tank for storing the work object in and out, a pressure reducing means for keeping the inside of the pressure reducing tank below atmospheric pressure, and a fueling means for the electric work stored in the electric pressure reducing tank. A) first and second pressure reducing tanks arranged in such a manner that openings for opening and closing the workpiece on each side face each other at predetermined intervals; and b) first and second pressure reducing powers. In order to open and close the openings alternately between the openings in which the tanks face each other, the openings of the first pressure-reducing tank are closed by the movement in one direction and moved in the opposite direction so as to be movable. C) the door is provided to close the opening of the second pressure reducing tank by means of c) and is connected to both sides of the door to be moved as such, Vacuum lubrication device for a work object, which control the first and second electrical equipment of a transport platform to access alternately the pressure-tank unit. The first and second pressure reducing tanks are arranged in such a manner that their openings are opposed to each other across the conveyance path of the workpiece assembly line. Device. Each conveying object is provided with a plurality of sending rotating members for moving the workpiece, which are axially rotated in a direction substantially perpendicular to the opposite direction of the openings of both tanks. Vacuum lubrication device. The moving means is a trolley provided with a movable operation between the openings of the first and second pressure reducing tanks facing each other, and an electric door of claim 1 characterized in that a door is placed in the trolley. Vacuum Lubrication Equipment. The scope of the claims, wherein the door is composed of two door members which move together, one door member opens and closes the opening of one pressure reducing tank, and the other door member opens an opening of the other pressure reducing tank. A vacuum oiling device for electric equipment according to claim 1. Claim 1 is characterized in that the conveying table is connected by means of a coupling means consisting of a hole means in the door and a pin member loosely inserted into the hole, and the other end is supported by the tank for pressure reduction. Lubrication equipment for electrical equipment Claims of claim 1, characterized in that the workpiece is an inlet transformer vacuum lubrication device for electrical equipment according to claim 1. A vacuum lubrication device for an electric machine according to claim 2, wherein the conveying path of the assembly line and the height of the conveying table are about the same. Between the conveying zone of the conveying path of the assembly line, a movable platform capable of switching between horizontal and non-horizontal state is provided. The movable platform allows the movement of work objects on its upper surface in the horizontal state and is not horizontal. The vacuum oiling device for electric machines according to claim 8, wherein the collision with the moving door can be avoided.

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