CN217008879U - Three-phase five-column side yoke clamping structure of mining transformer - Google Patents

Abstract

The utility model relates to a fixing auxiliary structure of a transformer iron core, in particular to a clamping structure of a side yoke of a three-phase five-column mining transformer, which solves the technical problems in the background technology and comprises a pressing device which is used for clamping the side yoke columns and is respectively positioned at the side edges of two side yoke columns of the transformer, wherein the pressing device comprises a pressing plate and an insulating plate which are oppositely arranged, the insulating plate is tightly close to the side yoke columns, the upper end and the lower end of the pressing plate are respectively fixed on an upper clamping piece and a lower clamping piece through fastening nuts, a plurality of jacking nuts are fixed on the pressing plate, the jacking nuts are arranged along the length direction of the pressing plate and penetrate in the pressing plate, bolts are matched with the upper threads of the jacking nuts, and the inward end parts of the bolts press the insulating plate. Whole side yoke clamping device stable in structure easily installs the dismantlement, is convenient for measure the construction, and the effect is obvious, reduces the clearance and the deformation degree of iron core on the one hand, and the position size of folder about on the other hand can effectual fixed lays a good foundation for the fixed of last folder and casing on the direction of height.

Description

Three-phase five-column side yoke clamping structure of mining transformer

Technical Field

The utility model relates to an auxiliary fixing structure for a transformer core, in particular to a clamping structure for a three-phase five-column mine transformer return yoke.

Background

Along with the continuous improvement of the production capacity of a coal mine, the unit power of production equipment is continuously increased, the voltage required to be equipped is also increased from the original 660V and 1140V to 3300V, the required transformer capacity is also continuously enlarged, but the space under a mine is limited, the overall size of the transformer is limited, particularly, the height size is strictly required, a three-phase five-column mining transformer is required, the height of the transformer can be well reduced, the gap in an iron core can generate noise and increase loss, the performance is greatly influenced, therefore, the whole iron core needs to be clamped and fixed, the core column iron core is clamped by a winding and an iron core supporting plate, two exposed side yoke columns can appear on two sides of the iron core structure, and the iron core needs to be effectively clamped and fixed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an auxiliary device capable of clamping and fixing an exposed side yoke column of an iron core, and provides a three-phase five-column clamping structure for a side yoke of a mining transformer.

The technical means for solving the technical problems of the utility model is as follows: the utility model provides a mining transformer side yoke of three-phase five-column presss from both sides tight structure, including being used for pressing from both sides tight other yoke post and being located the closing device of the side of two other yoke posts of transformer respectively, closing device includes relative clamp plate and the insulation board that sets up, the insulation board is close to other yoke post, the upper and lower both ends of clamp plate are fixed respectively on last folder and lower folder through fastening nut, be fixed with several capping nuts on the clamp plate, the capping nut is arranged and is worn to put in the clamp plate along clamp plate length direction, the screw-thread fit has the bolt on the capping nut, the bolt is towards interior tip compresses tightly the insulation board. The compressing device is fixed on the upper clamping piece and the lower clamping piece, not only can play a role of clamping the side yoke column, but also can fix the distance between the upper clamping piece and the lower clamping piece, and effectively plays a role of a pulling plate. The insulating board can effectually block bolt and iron core direct contact, and on the other hand becomes the extrusion of insulating board rectangle face by the fastening extrusion of several face of cylinder of bolt, can alleviate the pressure of iron core piece, and the protection iron core paint film does not receive great damage, also can judge the vertical degree of side yoke iron core through the straightness that hangs down that measures the insulating board. Whole side yoke clamping device stable in structure easily installs and dismantles, is convenient for measure the construction, and the effect is obvious, reduces the clearance and the deformation degree of iron core on the one hand, and the position size of folder about on the other hand can be effectual fixed lays a good basis for the fixed of folder and casing on the direction of height

Preferably, the left side edge or the right side edge of the pressure plate is fixedly connected with a reinforcing rib plate along the length direction. Need guarantee the straightness demand that hangs down of other yoke post at the in-process of pressing from both sides tight other yoke post because can reduce other yoke post like this and the clearance of the 45 hypotenuses of upper and lower yoke, the strengthening rib can reduce the deformation of clamp plate under this kind of demand.

Preferably, a locking nut is further in threaded fit with the bolt between the pressure plate and the insulating plate. Even if the clamp plate can take place less deformation, also can carry out adjusting bolt position through lock nut for other yoke post can ensure in the straightness that hangs down.

Preferably, the insulating plate is provided with at least two positioning blind holes for matching with the end parts of the bolts. The spacing cooperation of the tip of location blind hole and bolt makes the insulation board play the effect of location, has guaranteed whole closing device stable in structure.

Preferably, the insulating plate is made of a diphenyl ether insulating plate. The diphenyl ether insulation board has good temperature resistance, strength and insulating property, and meets the requirements of the application.

Preferably, the thickness of the insulating plate is 10 mm. The blind hole structure is reasonable, and the requirement of setting the blind hole can be met.

The utility model has the beneficial effects that: the whole side yoke clamping device is stable in structure, easy to install and detach, convenient to measure and construct and obvious in effect, on one hand, the gap and the deformation degree of an iron core are reduced, on the other hand, the position size of the upper clamping piece and the position size of the lower clamping piece can be effectively fixed, a good foundation is laid for fixing the upper clamping piece and the shell in the height direction, and the structure can effectively clamp the side yoke and achieve a good functional effect; on the other hand, the device is easy to assemble and disassemble and has good practical effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a front view schematically showing one side of a side yoke clamping structure according to the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural view of the insulating plate according to the present invention.

Fig. 4 is a schematic structural diagram of the pressing device of the present invention.

Fig. 5 is a side view of fig. 4.

In the figure: 1. a side yoke column; 2. pressing a plate; 3. an insulating plate; 4. an upper clamp; 5. a lower clamp; 6. pressing the nut; 7. a bolt; 8. reinforcing rib plates; 9. locking the nut; 10. and (6) positioning the blind hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A clamping structure of a side yoke of a three-phase five-column mining transformer is disclosed, as shown in figures 1-5, and comprises a pressing device which is used for clamping the side yoke column 1 and is respectively positioned at the side edges of two side yoke columns 1 of the transformer, the pressing device comprises a pressing plate 2 and an insulating plate 3 which are oppositely arranged, the insulating plate 3 is abutted against the side yoke columns 1, the upper end and the lower end of the pressing plate 2 are respectively fixed on an upper clamping piece 4 and a lower clamping piece 5 through fastening nuts, a reinforcing rib plate 8 is fixedly connected to the left side edge or the right side edge of the pressing plate 2 along the length direction of the pressing plate, a plurality of gland nuts 6 are fixed on the pressing plate 2, the gland nuts 6 are arranged along the length direction of the pressing plate 2 and penetrate in the pressing plate 2, bolts 7 are matched on the gland nuts 6 through threads, inward end parts of the bolts 7 are pressed on the insulating plate 3, the insulating plate 3 is made of diphenyl ether insulating plate 3, the thickness of the insulating plate 3 is 10mm, at least two positioning blind holes 10 which are matched with the end parts of the bolts 7 are arranged on the insulating plate 3, still go up on the bolt 7 between clamp plate 2 and the insulation board 3 screw-thread fit and have lock nut 9, even if clamp plate 2 can take place less deformation, also can carry out adjusting bolt 7 position through lock nut 9 for other yoke post 1 can be ensured in the straightness that hangs down.

The compressing device is fixed on the upper clamping piece 4 and the lower clamping piece 5, not only can play a role of clamping the side yoke column 1, but also can fix the distance between the upper clamping piece 4 and the lower clamping piece 5, and effectively plays a role of a pulling plate, and the distance between the upper clamping piece 5 and the lower clamping piece is fixed, so that the iron core pieces can be conveniently stacked on the clamping pieces. The insulating board 3 can effectually block bolt 7 and iron core direct contact, and on the other hand becomes the extrusion of 3 rectangular faces of insulating board by the fastening extrusion of several face of cylinder of bolt 7, can alleviate the pressure of iron core piece, and the protection iron core paint film does not receive great damage, also can judge the vertical degree of side yoke iron core through the straightness that hangs down that measures insulating board 3. Whole side yoke clamping device stable in structure easily installs the dismantlement, is convenient for measure the construction, and the effect is obvious, reduces the clearance and the deformation degree of iron core on the one hand, and the position size of folder 5 about on the other hand can effectual fixed lays a good foundation for the fixed of folder 4 and casing on the direction of height.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides a mining transformer side yoke of three-phase five-column presss from both sides tight structure, a serial communication port, including being used for pressing from both sides tight side yoke post (1) and being located the closing device of the side of two side yoke posts (1) of transformer respectively, closing device is including clamp plate (2) and insulation board (3) of relative setting, insulation board (3) are close to side yoke post (1), the upper and lower both ends of clamp plate (2) are fixed respectively on last folder (4) and lower folder (5) through fastening nut, be fixed with several gland nut (6) on clamp plate (2), gland nut (6) are arranged and are worn to put in clamp plate (2) along clamp plate (2) length direction, gland nut (6) are gone up screw-thread fit and are had bolt (7), bolt (7) tip pressure insulation board (3) inwards.

2. The clamping structure of the three-phase five-column mine transformer return yoke according to claim 1, characterized in that a reinforcing rib plate (8) is fixedly connected to the left side or the right side of the pressure plate (2) along the length direction thereof.

3. The clamping structure of the three-phase five-column mine transformer return yoke according to claim 2, characterized in that a lock nut (9) is further in threaded fit with the bolt (7) between the pressure plate (2) and the insulating plate (3).

4. The clamping structure of the side yoke of the three-phase five-column mining transformer as claimed in any one of claims 1 to 3, characterized in that the insulating plate (3) is provided with at least two positioning blind holes (10) for matching with the ends of the bolts (7).

5. The clamping structure of the return yoke of the three-phase five-column mining transformer as claimed in claim 4, wherein the insulating plate (3) is made of diphenyl ether insulating plate.

6. The clamping structure of the return yoke of the three-phase five-column mining transformer as claimed in claim 5, wherein the thickness of the insulating plate (3) is 10 mm.

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