JPS60144919A - Stationary induction apparatus - Google Patents

Abstract

PURPOSE:To securely fix a body to an external box by allowing a screw bar to be protruded from a through hole provided to a ceiling plate, welding the end edge of ceiling plate to the flange part of external box and engaging a cap by screwing to the protruded part of screw bar. CONSTITUTION:Screw bars 15 which become the lifting members are welded with a prescribed interval to the right and left side of upper frame 1a of body 1 and these bars are allowed to pass through the through holes 8a provided to the ceiling plate 8 and are protruded to the upper side of ceiling 8. The lower part of screw bar 15 is engaged with a stopper 16 by screwing located at the lower side of ceiling 8. When the body 1 is inserted to an external box 7, the stopper 16 is first located at the position lower than the height of external box 7. The ceiling plate 8 is placed thereon, a lifting metal 18 provided separately is engaged with the end top of screw bar 15 by screwing and the body 1 is lifted down within the external box 7 using a wire rope 11. A rear ceiling 8 and flange 7b of external box are welded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to stationary induction equipment such as a transformer with an on-load tap changer, particularly a stationary induction equipment main body and an on-load tap changer etc. that are housed and fixed in an outer box. This invention relates to improvements in stationary guidance equipment.

[Prior art]

Figures 1 to 4 show conventional stationary guidance equipment, with Figure 1 being a partially sectional front view, Figure 2 being a perspective view of the footrest, and Figure 3 being a partial perspective view of the inside of the outer box. 4 are partially sectional front views showing the assembly process. In the figure, (1) is the main body of the stationary induction device consisting of the core, primary and secondary windings, etc. of the stationary induction device consisting of the transformer with on-load tap changer; (1a)
is an upper frame disposed above this main body (1), (
1b) is a lower frame disposed below the main body (1) (7), and (2) is a pair of flat feet welded to the lower end surface of the lower frame (1b) at a predetermined interval. , each pair of through holes (
2a) is provided. (3) is the upper frame (1a
A pair of hangers are welded to the upper end surface of the lower end 5 (aat) at a predetermined interval, and an engaging portion (8 is connected to the lower end 5 (aat) at a predetermined location in the middle of the protrusion (8b)). has been done.

(4) is an on-load tap changer, which is connected to the main body (1) through a connection lead (5). (6) is the outer box body (
7 and a top plate (8) that is welded to the flange (7b) formed at the periphery of the upper opening (7a) of the outer box body (7). Each pair of protrusions (targets) fixed to the bottom plate part (7c) of (7) at a predetermined interval are inserted through each pair of through holes (211L), and the horizontal movement of the main body (1) (8a) is a pair of through holes formed in the top plate (8) at a predetermined interval, and each protrusion (3b) of the pair of hangers (3) Penetrates with low play. CLQ is the top plate (
8) is welded to the flange (7b) of the outer box body (7), and a pair of water seal portions whose lower ends are welded to the outer edge portions of the pair of through holes (8a) in a watertight manner. As a result, the inner circumferential surface is brought into contact with the outer circumferential surface of each protrusion N5 (81) of the pair of handles (3). Further, the on-load tap changer (4) is suspended from the top plate (8).

Next, the main body (1) of the stationary 5-conductor device configured as described above.
The assembly process for storing and fixing the on-load tap changer (4) in the outer box (6) will be explained.

As shown in Fig. 4, the projections s (81) of the pair of hanging hands (3)
), the wire ropes 0 are raised by engaging the protrusions from the outer end surface of the top plate (8), respectively.
A pair of engaging parts 1' (80) engage with the inner end surface of the top plate (8), and the top plate (8), main body (1), and load tap changer (4) rise together, and the pair of legs The lower end surface of the gold (2) is located above the upper end surface of the flange (7b) of the outer box body (7). In this state, attach the L-shaped bracket 4 to a pair of hanging handles (
The protrusions HIN8b) of 3) are welded to the protruding parts from the outer end surface of the top plate (8) using bolts α to prevent the top plate (8) from moving downward. Next, the main body (1) and the on-load tap changer (4) are housed in the outer box main body (7), and each pair of through holes (2a) are fitted into each pair of protrusions (9). The main body (1) and the on-load tap changer (4)
) and lower the wire rope αη sequentially.
The main body (1) and the on-load tap changer (4) are housed in the outer box main body (7), and the lower end surface of the top plate (8) abuts the upper end surface of the flange (7b). Next, when loosening Qa and removing the pair of L-shaped fittings 4 from the pair of projections (8b), the main body (1) and the on-load tap changer (41 are restrained by the pair of L-shaped fittings 4). Each pair of through holes (2a) is fitted into each pair of protrusions (9), and the main body (1) and on-load tap changer (4) are inserted into the outer box main body (7). It will be accommodated in the set position and its movement in the horizontal direction will be restricted.Next, the wire rope συ
from a pair of hanging handles (3), and remove it from a pair of through holes (8a
) The outer periphery of the top plate (8) is fitted with a flange (7b
At the same time, the inner circumferential side of the pair of water seals is connected to the respective protrusions (8bJ) of the pair of hanging arms (3).
It is assembled and configured to prevent the main body (1) and the on-load tap changer (4) from moving horizontally and vertically within the outer box (6) by contacting the outer peripheral surface of the main body (1) and the on-load tap changer (4). will be done. Further, αΦ is a gap provided between the tip surface of each protrusion (3b) of the pair of hanging hands (3) and the inner peripheral inner end surface of each of the pair of water seal parts uQ,
Inside the outer box (6) is the main body (1) and the tap changer (4) on load.
In particular, when the pair of hanging arms (3) are housed and fixed, it is possible to absorb coupling errors between the main body (11) and the pair of hanging arms (3).

Conventional stationary induction equipment is assembled and configured by the assembly process described above, but the main body (1) and on-load tap changer (4) are separated horizontally and vertically within the outer box (6). As a fixing means for preventing movement of the foot plates, the through holes (2a) of each of the legs (2) are respectively fixed to the bottom plate (7c) of the outer box body (7). Fitting with the protrusion (9), and the inner peripheral surface of each of the pair of water seals fflαq and each protrusion o1s (8b
) due to the contact force with the outer peripheral surface of the
If vibration occurs during transportation of stationary induction equipment or vibration due to an earthquake, the contact force between the water seal part and the protrusion (8b) will cause the main body (1) and the load to be damaged within the outer box (6). It becomes impossible to fix the tap changer (4) without moving it, and the main body (1) and the tap changer (4) under load are damaged.
) is damaged at an early stage, and the outer box (6) is also damaged at an early stage. In addition, since the inner peripheral surface of the water seal member 4 and the protrusion (8b) of the hanger (3) are in contact with each other, the vibration causes the inner peripheral surface of the water seal member 4 to contact the protrusion of the hanger (3). The outer circumferential surface of the part (81)) comes into sliding contact, and abrasion powder of metal and paint generated at this time adheres to the outer circumferential surface of the main body (1), resulting in a disadvantage that the electrical performance of the main body (1) is degraded. In addition, not only are a pair of L-shaped metal fittings ■ required, but also the L-shaped metal fitting 4 must be attached to the hanging hand (pole to the force protrusion (8b)) (screwed together with Ll, or connected to the main body (1) and the tap at the time of load). It is necessary to loosen the bolt and remove the L-shaped fitting from the hanger (3) while the switch (4), etc. is suspended by the wire rope αυ, which has the disadvantage of complicating the assembly process. Ta.

[Summary of the invention]

This invention has been made in an attempt to eliminate such drawbacks, and includes one end portion connected to the upper end side of the main body, and an engaging member capable of engaging with the inner end surface of the top plate adjustable in the middle portion. and a plurality of coupling members whose retaining portions are loosely fitted into the plurality of through holes of the top plate and protrude from the upper end surface of the top plate, and the plurality of coupling members from the upper end surface of the top plate. By providing a plurality of water sealing members that engage the protruding engaging portions and watertightly seal the plurality of through holes in the top plate, the main body etc. can be securely placed inside the outer box. We propose a stationary guidance device that is fixed and has a simple assembly process.

[Embodiments of the invention]

Figures 5 to 7 show an embodiment of the present invention, with Figure 5 being a partially sectional front view, Figure 6 being a sectional view of the main parts, and Figure 7 being a partially sectional view showing the assembly process. It is a front view. In the figure,
(3) is a pair of joints consisting of an upper frame (la) and a pair of hanging arms whose ends are welded together at a predetermined interval, and an engagement consisting of a male thread formed at the end of the frame. B (8b) penetrates a pair of through holes (8a) provided in the top plate (8) and protrudes from the outer end surface of the top plate (8). (8 is a pair of engagement members rotatably screwed into the engagement 1 (81)), and are opposed to the lower end surface of the top plate (8) with a predetermined distance therebetween.

For QQ, the top plate (8) is the flange (7b) of the outer box body (7)
After being welded to the
) is a pair of water seals that are watertightly welded to the outer peripheral edge of the engagement part (1).
0 is engaged with the engaging portion (8b). Other symbols are the same as those of the conventional stationary guidance equipment, so explanations will be omitted.

Next, an assembly process for storing and fixing the main body (1) of the stationary induction device and the on-load tap changer (4) configured in this manner in the outer box (6) will be described.

As shown in Fig. 7, a pair of joints g@' (a lifting member (end) having a through hole (15a) provided upward in the protrusion from the outer end surface of the top plate (8) of the engaging part (ab) of 3J) At the same time, insert the wire rope a into each through hole (15a).
When the wire rope Qυ is raised by multiplying the The tap changer (4) rises together and a pair of feet (the lower end of the illusion is the outer box body (7)
is located above the upper end surface of the flange (7b). In this case, adjust the position of the pair of engaging members (8C) so that the gap between the lower end surface of the lifting member Q5 and the outer end surface of the top plate (8) becomes the empirically determined (0) dimension. .

Next, the main body (1) and the on-load tap changer (4) are housed in the outer box main body (7), and each pair of through holes (2a
) is fitted into the pair of protrusions (9) on the main body (1).
When the on-load tap changer (4) is positioned and the wire rope α is sequentially lowered, the inner end surface of the top plate (8) first comes into contact with the outer end surface of the flange (71+). When the wire rope Qυ is further lowered, the lower end of the lifting 11
) dimension descends and comes into contact with the outer end surface of the top plate (8), and the main body (1) and the load tap changer (4) also descend (0) dimension and each pair of through holes (2a) touch the outer end surface of the top plate (8). It will be fitted into the child (9).

Next, the pair of lifting parts μs are removed from the engaging portions (8b) of the pair of hanging hands +31, the wire rope aυ is removed from the pair of lifting members 4, and the pair of water seal parts αq is connected to the pair of joints gI' The assembly process of the stationary guidance device is completed by engaging the engaging portion (8bJ) of (3) and welding the lower end portion to the outer edge portion of the pair of through holes (8a) in a watertight manner.

Although this embodiment describes a stationary induction device consisting of a transformer with an on-load tap changer, it is needless to say that the present invention is not limited to this embodiment.

〔Effect of the invention〕

As explained above, the present invention is a stationary guidance device in which the main body of the stationary guidance device is housed and fixed in an outer box formed by an outer box main body and a top plate, in which one end portion is coupled to the upper end side of the main body. At the same time, an engaging member that can engage with the inner end surface of the top plate is adjustably engaged in the intermediate portion, and the engaging portions are loosely fitted into the plurality of through holes of the top plate, so that the outer end surface of the top plate can be adjusted. It engages with the plurality of joint parts protruding from the end surface and the engaging parts of the plurality of joint parts protruding from the outer end surface of the top plate, and also seals each of the plurality of through holes of the top plate in a watertight manner. The structure is equipped with multiple water seals, so the main body can be securely fixed inside the outer box, and it has excellent quality with almost no damage due to vibrations during transportation or during earthquakes. Therefore, it is possible to provide a stationary guidance device that has improved reliability and is easy to assemble.

[Brief explanation of the drawing]

Figures 1 to 4 show a conventional stationary guidance device, with Figure 1 being a partially sectional front view, Figure 82 being a perspective view of the footrest, and Figure 3 being a partial perspective view of the inside of the outer box. , FIG. 4 is a partially sectional front view showing the assembly process, FIGS. 5 to 7 show an embodiment of the present invention, FIG. 5 is a partially sectional front view, and FIG. 6 is a main part. FIG. 7 is a partially sectional front view showing the assembly process. In the figure, (1) is the main body, (2) is the foot, (2a) is the through hole, (force is the connecting part) 4, (8b) is the engaging part, (3C
) is the engagement part, (6) is the outer box, (7) is the outer box body, (8
) is the top plate, (8a) is the through hole, (9) is the protrusion, 4 is the water seal, and (0 is the predetermined gap. In the figures, the same reference numerals indicate the same or equivalent parts. Agent: Masuo Oiwa Figure 1/C Figure 4 Figure 5 Figure 6 Figure 7 Procedural Amendment (Spontaneous) 1. Indication of the case Patent Application No. 1046/1982 2. Title of the invention Static guidance equipment Fixing device 3, Person making the amendment Representative Hitoshi Katayama Department 4, Agent 5, Full text of the specification to be amended and drawing 6, Contents of amendment (1) The entire text of the specification shall be corrected as shown in the attached sheet. (2) Figures 5, 6, and 7 of the drawings are corrected in the attached text. Amended Description 1, Name of the Invention, Stationary Induction IN Unit Fixing Device 2, Claim 3, Detailed Description of the Invention [Technical Field of the Invention] This invention is a stationary induction IN generator fixing device 2, Claim 3, Detailed description of the invention. The present invention relates to an improvement of a device for storing and fixing the main body of an induction device, particularly a stationary induction device, an on-load tap changer, etc. in an outer box. [Prior Art] Figs. 1 to 3 show a conventional fixing device for stationary guidance equipment, and Fig. 4 is a partially sectional front view showing the assembly process. In the figure, 1 is the main body of the stationary induction device consisting of an iron core, primary and secondary windings, etc. of a transformer with on-load tap changer, and 1a is the upper frame disposed above this main body 1. , 1b is a lower frame disposed below the main body 1, and 2 is a pair of flat feet welded to the lower end surface of the lower frame 1b at a predetermined interval. Each pair of through holes 2a are provided. Reference numeral 3 denotes a pair of hangers whose lower ends 3a are welded to the upper end surface of the upper frame 1a at a predetermined distance, and engagement members 3c are respectively connected to predetermined positions in the middle of the projections 3b. There is. Reference numeral 4 denotes an on-load tap changer, which is connected to the main body 1 through a connection lead 5. A box body 6 encloses the main body 1, which is composed of an outer box 7 and a top plate 8 welded to a flange 7b formed at the periphery of the upper opening 7a of the outer box 7. Each pair of protrusions 9 fixed at a predetermined interval to the bottom plate portion 7C of the body 1 are inserted through the through holes 2a of the foot 2, respectively.
It is designed to restrict the horizontal movement of the 8a
are a pair of through holes formed in the top plate 8 at a predetermined interval, through which the respective projections 3b of the hanger 3 are loosely fitted. Reference numeral 10 designates a pair of water seal members whose lower ends are watertightly welded to the outer peripheral edges of the pair of through holes 8a, and whose inner surfaces abut one side of the projections 3b of each of the above-mentioned hanging arms 3. It is designed to be close to each other. Further, the on-load tap changer 4 is suspended from the top plate 8. Next, an assembly process for storing and fixing the main body 1 of the stationary induction device and the on-load tap changer 4 in the outer box 6 will be described. First, the top plate 8 is supported by the engaging member 3c fixed to the hanger 3, and then the top plate 8 is held down from above using the L-carved metal fitting 12, and the L-carved metal fitting 12 is attached to the hanger 3 by bolts 13. Fix it. With the main body 1 and the top plate 8 combined by the above means, the wire rope 11 is hung on the hanger 3 and lifted up, and this is inserted into the outer box 7 as shown in FIG. 4, and the lower frame 1
Positioning is performed by fitting the upper end of the protrusion 9 into the through hole 2a of the foot plate 2 fixed to b, and when the bottom surface of the top plate 8 and the outer box 70) flange 7b are brought into contact, the above-mentioned engraving is performed. If the tool 12 is removed from the hanger 3 to release the connection between the hanger 3 and the top plate 8, and then only the main body 1 is lowered, the feet 2 will completely contact the inner bottom surface of the outer box 7, and the main body 1 will be lowered. is stabilized at a specified position, at which point the wire rope 11 is removed. Note that the through hole 8a provided in the top plate 8 is set larger than the protrusion 3b of the hanger 3, so use the mutual spacing to finely adjust the position of the top plate 8 to match the outer box 7. , whose edge is the flange of outer box 7? Weld and fix to the edge of b. Next, the water sealing member 10 is used to close the through hole 8a of the top plate 8. In this case, one of the water sealing members 10 has its inner surface on the left side of the protrusion 3b of the hanger 3, and The lower end periphery of the other end is welded to the top plate 8 while firmly abutting the right side surface of the protrusion 3b, and the main body 1 is fixed in this relationship. Note that 14 in the figure is a gap for adjusting the height of the top plate 8 formed between the water seal member 10 and the protrusion 3b of the hanger 3. By the way, in the conventional configuration as described above, the main body 1 is not aligned horizontally due to the connection between the hanger 3 and the water seal member 10 and the relationship between the foot 2 and the protrusion 9 that fits into the through hole 2a. It is completely restrained, but is not restrained at all in the vertical direction. Therefore, the main body 1 is extremely unstable against vibrations in the vertical direction during earthquakes and transportation, and in addition, since the water seal member 10 and the hanger 3 are in surface contact with each other,
There is a drawback that the metal and paint peel off and fall due to the relative sliding movement in the vertical direction, reducing the electrical reliability of the transformer body 1. Furthermore, when inserting the transformer main body 1 into the outer box 7, the lowering operation has to be temporarily stopped and the L-engraved metal fitting 12 has to be removed, which is troublesome. It also had the disadvantage of requiring additional work. This invention has been made to eliminate such drawbacks, and provides a fixing device for stationary induction equipment that can securely fix the main body to the outer box and also easily adjust the height of the top plate. With the goal. [Embodiment of the Invention] An embodiment of the invention will be described below based on FIGS. 5 to 7, which show an embodiment of the invention. In the figure, 15 is a threaded rod fixed by welding at a predetermined interval on the left and right sides of the upper frame 1a of the main body 1, and is used as a lifting member when lifting the main body 1 as described later. Possesses sufficient strength to handle this. The threaded rod 15 passes through a through hole 8a formed in the top plate 8 and protrudes from the top surface of the top plate 8. '16 is a stopper screwed onto the threaded rod 15 and positioned on the lower surface side of the top plate 8; 17 is a screw cap for covering the portion of the threaded rod 15 that protrudes from the top plate 8; is screwed onto the top end of the threaded rod 15, and its lower end periphery is fixed to the top plate 8 by welding. When inserting the main body 1 equipped with the fixing device as described above into the outer box 7, first set the position slightly lower than the height of the outer box 7, adjust the screwing amount of the stopper 16 to the threaded rod 15, and then The top plate 8 is placed on this, and a separately prepared lifting fitting 18 is screwed onto the end of the threaded rod 15 protruding from the through hole 8a of the top plate 8. At this time, the distance between the lifting metal fitting I8 and the top plate 8 is adjusted so as to maintain a certain distance C which has been determined empirically. After assembling the main body 1, top plate 8, and lifting fitting 18 as described above, the wire rope 11 is hung on the lifting fitting 18 and lifted up, and then lowered and inserted into the outer box 7 as shown in FIG. do. At this time, the top plate 8 and the flange part 7b of the outer box 7 first come into contact, but since there is a gap between the stopper 16 and the lifting fitting 18, the top plate 8 is in a state where it is transferred to the flange part 7b. So, the main body is 1 ton! The foot 2 of the lower frame 1b fell when the injury occurred.
It stops when it comes into contact with the inner bottom surface of the outer box 7. After storing the main body 1 in this way, remove the wire rope 11 and the lifting member 18, finely adjust the position of the top plate 8 so that it matches the outer box 7, and weld its periphery to the flange part 7b. Furthermore, a screw cap 7 is screwed onto the top end of the threaded rod 15, and the lower edge of the screw cap 7 is welded to the top plate 8 to fix it. In other words, in this state, the main body 1 includes the threaded rod 15, the threaded cap 17,
It is integrated with the outer box 7 via the top plate 18, and is restrained in the vertical and horizontal directions. [Effects of the Invention] As explained above, in this invention, when the main body and the top plate are integrally lifted, a tension bar into which a stopper is screwed to support the top plate at a predetermined height position is attached to the upper frame of the main body. The threaded rod is inserted into the through hole provided in the top plate and protrudes, and the edge of the top plate is welded to the flange of the outer box, and a screw cap is attached to the protruding part of the screw rod. It is screwed in and the lower edge is welded to the top plate and fixed, and the main body is completely restrained and fixed vertically and horizontally by the screw rod and screw cap, so fI! It strongly responds to Is and vibrations during transportation, and there is no falling of metal or paint powder caused by sliding between members as in the past, improving electrical reliability. Furthermore, the dimensional tolerances due to manufacturing and assembly can be adjusted with simple work, and in addition, the simplification of assembly work and improvement in efficiency can be expected, which has great effects. 4. Brief explanation of the drawings Figures 1 to 4 show a conventional stationary guidance device. Figure 1 is a partially sectional front view, Figure 2 is a perspective view of the footrest, and Figure 3 is an external view. FIG. 4 is a partial perspective view of the inside of the box; FIG. 4 is a partially sectional front view showing the assembly process; FIGS. FIG. 6 is a sectional view of the main part, and FIG. 7 is a partially sectional front view showing the assembly process. In the figure, 1 is the main body, 1a is the upper frame, 7 is the outer box, 8 is the top plate, 8a is the through hole, 15 is the spring bar, 16 is the stopper, and 17 is the spring. , -Yap. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa Figure 5 Figure 6 Figure 7

Claims (4)

[Claims] (1) An outer box is formed by the main body of the stationary induction device, the outer box main body which is mounted and connected to the lower end of the inner periphery, and the top plate fixed to the periphery of the upper opening of the outer box main body. In a stationary induction device in which the main body is housed and fixed in an outer box, one end is coupled to the upper end of the main body, and an engaging part in the middle that can engage with the inner end surface of the top plate is used for adjustment. a plurality of coupling members that are operatively engaged and whose engagement portions are loosely fitted into the plurality of through holes of the top plate and protrude from the outer end surface of the top plate, and each of the plurality of coupling members; A stationary induction device comprising a plurality of water seals that engage with the engaging portions protruding from the outer end surface of the top plate and watertightly seal the plurality of through holes, respectively. (2) The stationary guidance device according to claim 1, wherein the engaging portion of the coupling portion is a male threaded portion. (3) The stationary guidance device according to claim 1, wherein the water seal part is screwed into a male threaded part of the coupling part part. (4) The stationary guidance device according to claim 1, wherein the water seal S is welded to the outer peripheral edge of the through hole of the top plate.