CN216713992U - Transformer substation oil pit light steel structural part magnetic force rigid coupling device - Google Patents

Abstract

The utility model discloses a magnetic force fixedly connecting device for a transformer substation oil pit light steel structural member, which comprises a connecting piece, wherein a first groove and a second groove are formed in the connecting piece at intervals, a first neodymium iron boron magnet is placed in the first groove, the bottom of the first groove limits the axial movement of the first neodymium iron boron magnet, a second neodymium iron boron magnet is placed in the second groove, the bottom of the second groove limits the axial movement of the second neodymium iron boron magnet, and a first through hole and a second through hole are respectively formed in the bottoms of the first groove and the second groove. The method is particularly suitable for solving the problems that the construction period of a transformer substation oil pit steel structure platform project is short, the requirement on the corrosion resistance of a steel structural member is high, the traditional fixing method is complicated, the corrosion resistance of the prefabricated steel structural member is weakened through site drilling, and the like.

Description

Transformer substation oil pit light steel structural part magnetic force rigid coupling device

Technical Field

The utility model relates to a magnetic force fixing device, in particular to a magnetic force fixing device for a transformer substation oil pit light steel structural member.

Background

For steel structural members, particularly steel structural members, which have light dead weight and do not have large load requirements, only need to be fixedly connected, and do not have displacement caused by impact load in the whole period of a project, so that the safety use is influenced, for example, a manual maintenance platform of 2.5-4 kPa load in a transformer substation can be used for researching and developing various fixedly connecting and fastening devices, so that the project construction progress is accelerated, the corrosion-resistant layer of the steel structural member is prevented from being damaged, and the project maintenance cost is reduced. Although the steel structural member belongs to factory prefabricated production, the field installation of the steel structural member still adopts connecting pieces such as high-strength bolts, common bolts, self-tapping screws and the like for fixedly connecting, and the fixedly connecting in the mode needs more complicated field operation, more tools and a large amount of time. The on-site drilling is easy to damage an anti-corrosion layer formed on the surface of the steel structural member in a prefabricating stage, and the bolt or the screw is adopted for connection after drilling, so that the contact area between the connecting member and the steel structural member is increased, holes or grooves can also appear at the drilling position, and thread gaps between the screw and the steel structural member are easy to generate effusion, besides the oxidation-reduction corrosion which can occur in the connecting member and the steel structural member, due to the difference of the material properties and the types of the steel structural member and the connecting member at the connecting structure, the electrochemical corrosion of the steel structural member and the connecting part at the connecting position of the connecting member can be accelerated by adopting the drilling connection, and the anti-corrosion performance of the steel structural member and the connecting member is greatly weakened. Particularly, in a humid area with large rainfall and snowfall, the fixed joint on the surface of the steel structural member is easy to rust or even rust-through due to electrochemical corrosion, so that the service life of the steel structural member is shortened, and even serious potential safety hazards can appear, thereby increasing the overhaul and maintenance time cost and the economic cost in the operation and maintenance stage.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art and solve the problems in practical work, the utility model aims to provide the magnetic force fixing device for the transformer substation oil pit light steel structural member, which is simple and convenient to install and disassemble, can accelerate engineering construction and avoid the damage to an anti-corrosion layer of the steel structural member. The method is particularly suitable for solving the problems that the construction period of the transformer substation oil pit steel structure platform engineering in the construction stage is short, the requirement on the corrosion resistance of the steel structural member is high, the traditional fixing method is complicated, the prefabricated steel structural member is weakened in corrosion resistance through site drilling, and the like. In addition, the utility model reduces the time cost and the economic cost of maintenance in the operation and maintenance stage, reduces the use of various tools in the production field, reduces the manual workload and promotes the safe production.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a transformer substation's oil pit light gauge steel structure magnetic force rigid coupling device, includes the connection piece, be equipped with spaced first recess and second recess on the connection piece, place first neodymium iron boron magnetism body in the first recess, first recess bottom restriction first neodymium iron boron magnetism body axial motion, place second neodymium iron boron magnetism body in the second recess, second recess bottom restriction second neodymium iron boron magnetism body axial motion, first through-hole and second through-hole have been seted up respectively to first recess and second recess bottom.

Further, the first neodymium-iron-boron magnet and the second neodymium-iron-boron magnet are N45 magnets.

Further, the surface of the neodymium iron boron magnet and/or the connecting piece is provided with an anticorrosive coating.

Further, the connecting sheet is in a long strip shape.

Further, an insulating layer is arranged at the bottom of the connecting sheet.

Furthermore, the groove is a columnar groove, the through hole is a columnar hole, the groove and the through hole are coaxially arranged to form a step hole, the groove and the through hole are in transition through a hole shoulder, and the hole shoulder limits axial movement of the neodymium iron boron magnet.

Further, the cross-sectional area of the first through hole is 30% -90% of the cross-sectional area of the first neodymium-iron-boron magnet, and the cross-sectional area of the second through hole is 30% -90% of the cross-sectional area of the second neodymium-iron-boron magnet.

Further, still include first sealed block and the sealed block of second, first sealed block cover is established on the first neodymium iron boron magnetism body with the connection piece contact, the sealed block cover of second is established on the second neodymium iron boron magnetism body with the connection piece contact.

Further, the axial height of first neodymium iron boron magnetism body is higher than the height of first recess, the axial height of second neodymium iron boron magnetism body is higher than the height of second recess, first sealed block sets up the first inner chamber that holds first neodymium iron boron magnetism body, the sealed block of second is equipped with the second inner chamber that holds second neodymium iron boron magnetism body.

Further, the connecting piece is a stainless steel sheet or a galvanized steel sheet, and the first sealing cap and the second sealing cap are stainless steel caps or galvanized caps.

Adopt above-mentioned scheme, its beneficial effect is as follows, overlap joint connection piece between two adjacent steel structure pieces, it is used for placing the neodymium iron boron magnet to be provided with first recess and second recess on the connection piece, it can avoid neodymium iron boron magnet and steel structure piece direct contact to place the connection piece, difficult following steel structure piece and lifting off, the lateral wall and the bottom homoenergetic of recess play limiting displacement to the neodymium iron boron magnet, and because the separation of recess lateral wall also can weaken the suction of the horizontal square line of placing the neodymium iron boron magnet in the recess to steel structure piece production. By adopting the structure, the neodymium iron boron magnet is pressed at the bottom of the groove, so that the connecting piece and the steel structural piece have larger contact area, and larger friction force is conveniently generated between the connecting piece and the steel structural piece. And place the neodymium iron boron magnetism body in the recess, protect the neodymium iron boron magnetism body, can weaken the magnetic force effect of neodymium iron boron magnetism body to the recess periphery, avoid leading to the magnetic force inefficacy of neodymium iron boron magnetism body because of it adsorbs unknown metal particle and article.

In addition, the through holes are formed in the bottoms of the grooves, the weakening effect of the connecting piece on magnetic force can be reduced, the fastening effect of the connecting piece and the steel structural piece is better, the connecting piece and the steel structural piece need to be replaced after the magnetic force of the neodymium iron boron magnet is weakened, and when the neodymium iron boron magnet is inconvenient to detach from the grooves due to the fact that the neodymium iron boron magnet still has strong magnetic force on the directly contacted connecting piece, ejecting thrust force can be exerted on the neodymium iron boron magnet through the through holes through the tool, the neodymium iron boron magnet is forced to be separated from the connecting piece, and the structure can facilitate detachment of the neodymium iron boron magnet. The utility model mainly utilizes the self magnetic force of the neodymium iron boron magnet to extrude the connecting sheet to generate the force towards the steel structural member, so that the surface of the connecting sheet, which is contacted with the steel structural member, generates friction force to be fastened, and the neodymium iron boron magnet can also generate the suction force towards the neodymium iron boron magnet to the steel structural member. Moreover, the same neodymium iron boron magnet has a magnetic traction effect on the two steel components, and the traction effect is more remarkable particularly when the two neodymium iron boron connecting lines and the butt joint gaps are arranged in a crossed mode. The difference of the connection mode with the traditional steel structural member lies in that the operation of damaging the surface of the steel structural member does not occur, and the contact area between the connecting piece and the steel structural member is reduced, so that the corrosion-proof layer formed by the steel structural member in the prefabrication stage is effectively prevented from being damaged, the phenomenon of liquid accumulation in holes, grooves and thread gaps generated by drilling can be avoided, and the corrosion of the steel structural member and the connecting piece is accelerated.

In the utility model, compared with an alnico material, a ferrite material, a rare earth material and the like, the neodymium iron boron magnet material adopted in the first neodymium iron boron magnet and the second neodymium iron boron magnet has higher magnetic energy product and good metal processing performance, for example, the shape of the magnet can be matched with the shape design of a device component, and the neodymium iron boron magnet material is a magnet with higher performance price so far.

The steel structural member is fixedly connected by adopting the device, an anticorrosive coating on the surface of the steel structural member can not be damaged, the anticorrosive capability of all the steel structural members on the oil pit steel structural platform of the transformer substation is improved, the number of parts of the device is small, the device is simple and convenient to install, and the labor cost, the time cost and the economic cost are saved. The steel structure that adopts above-mentioned scheme rigid coupling is in the in-process of maintaining the maintenance, if need dismantle, and its dismantlement process possesses the technological advantage that does not destroy steel structure surface with the installation, saves the human cost, the time cost and the economic cost of maintaining the maintenance simultaneously. Therefore, the scheme of the utility model obviously promotes the safe production and saves the engineering construction cost and the project operation cost.

The utility model is further described with reference to the following figures and specific examples.

Drawings

FIG. 1 is a cross-sectional view of section A-A of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic view of a connecting sheet according to the present invention;

fig. 5 is a schematic view of the mounting structure of the present invention.

In the figure: 1-a first sealing cap, 2-a second sealing cap, 3-a first neodymium-iron-boron magnet, 4-a second neodymium-iron-boron magnet, 5-a connecting piece, 6-a first groove, 7-a second groove, 8-a first through hole, 9-a second through hole, 10-a steel structural part, 11-a first inner cavity, 12-a second inner cavity and 13-a hole shoulder.

Detailed Description

The technical contents, structural features, and objects and effects achieved by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, a transformer substation oil pit light steel structure magnetic force rigid coupling device, includes connection piece 5, connection piece 5 is the stainless steel sheet of rectangular shape or hot-galvanize steel sheet, and the whole appearance and the traditional connecting piece shape of device tend to unanimity to adapt to the operation habit and the working method of fortune maintenance personnel, convenient discernment avoids causing unsafe and inconvenient effect and the efficiency that influences the fortune dimension in using after the project is put into operation. Be provided with spaced first recess 6 and second recess 7 on the connection piece 5, place first neodymium iron boron magnetism body 3 in the first recess 6, the bottom restriction of first recess 6 the axial motion of first neodymium iron boron magnetism body 3, place second neodymium iron boron magnetism body 4 in the second recess 7, the bottom restriction of second recess 7 the axial motion of second neodymium iron boron magnetism body 4, first through-hole 8 and second through-hole 9 have been seted up respectively to first recess 6 and second recess 7 bottom.

The first ndfeb magnet 3 and the second ndfeb magnet 4 are preferably N45 magnets. The neodymium iron boron magnet in the utility model can be more conveniently disassembled only by controlling the magnetic strength within a certain range, and the neodymium iron boron magnet is used as a part of the fixed connection device, the magnetic connection effect of each part of the utility model is higher than that of the steel structural member 10, the utility model can achieve the requirement of convenient disassembly by using the N45 magnet, and the magnetic connection effect of each part of the utility model is higher than that of the steel structural member. The contact area of N45 magnet and connection piece 5 has been increased in the groove design on connection piece 5, and the through-hole design passes through the through-hole with the magnetic force of magnet and conducts to steel structure 10, has strengthened the magnetic force linkage effect of N45 magnet to steel structure 10, not only can satisfy the magnetic force requirement of the device this moment, more makes things convenient for the device's installation, dismantlement.

Because the device is applicable to the transformer substation, the current flow of the fluctuating magnetic field exists in the transformer substation, the steel structural part and the connecting piece can be corroded by induced current, and the corrosion speed of the steel structural part and the connecting piece is far higher than the natural corrosion speed. Moreover, the transformer substation is often in the environment such as outdoor and underground, especially in the humid environment such as rainfall and large snowfall, the connecting sheet 5 and the steel structural member 10 are easy to be electrochemically corroded at the fixed connection position, meanwhile, the neodymium iron boron magnet material has weak self-corrosion resistance and can influence the use of the device, therefore, the surfaces of the neodymium iron boron magnet material, the connecting sheet and the sealing cover cap are processed by electrophoresis, electroplating or epoxy resin spraying on the surfaces, and the like, so that the surfaces of the neodymium iron boron magnet material, the connecting sheet and the sealing cover cap are covered with an anticorrosive coating or an insulating layer, the anticorrosive coating is made of insulating materials, can have the effects of corrosion resistance and insulation, prevent a plurality of steel components from being connected to form a conductor structure with longer length, form more obvious induced current, avoid electrochemical corrosion, the corrosion resistance of the device can be improved, and the connecting sheet 5 and the steel structural member 10 are prevented from being separated from each other due to corrosion.

Furthermore, the groove is a columnar groove, the through hole is a columnar hole, the groove and the through hole are coaxially arranged to form a step hole, the groove and the through hole are in transition through a hole shoulder, and the hole shoulder limits axial movement of the neodymium iron boron magnet. Set recess and through-hole to the column, can conveniently process the connection piece to the magnet structure that uses at present is cylindrical mostly, all sets recess and through-hole to the column, is convenient for keep unanimous with current magnet shape.

Further, the cross-sectional area of the first through hole 8 is 30% -90% of the cross-sectional area of the first neodymium-iron-boron magnet 3, and the cross-sectional area of the second through hole 9 is 30% -90% of the cross-sectional area of the second neodymium-iron-boron magnet 4. When the through hole is too large, the contact area between the neodymium iron boron magnet and the inner wall of the through hole is reduced, so that the connecting sheet 5 is easily separated from the neodymium iron boron magnet; when the through holes are too small, the magnetic effect is weakened, and the connection strength between steel structural members is reduced.

Further, still include first sealed block 1 and the sealed block 2 of second, sealed block is preferably stainless steel block or zinc-plated block, 1 cover of first sealed block is established on the first neodymium iron boron magnetism body 3 with the contact of connection piece 5, 2 covers of the sealed block of second are established on the second neodymium iron boron magnetism body 4 with the contact of connection piece 5. In practical application, the neodymium iron boron magnet may be because of its magnetism accidentally adsorbs unknown metal particle and article in the air when exposing outside, consequently, is provided with sealed block and gets up the protection of neodymium iron boron magnet, avoids it to lead to the magnetic force of neodymium iron boron magnet to become invalid because of adsorbing unknown metal particle and article.

Further, the axial height of first neodymium iron boron magnetism body 3 is higher than the height of first recess 6, the axial height of second neodymium iron boron magnetism body 4 is higher than the height of second recess 7, first sealed block 1 sets up the first inner chamber 11 that holds first neodymium iron boron magnetism body 3, the sealed block 2 of second is equipped with the second inner chamber 12 that holds second neodymium iron boron magnetism body 4. By adopting the structure, the sealing cap cover is only contacted with the connecting piece through the bottom of the sealing cap cover, the top of the inner cavity of the sealing cap cover is prevented from being contacted with the neodymium iron boron magnet, the over-positioning is prevented, the connecting force of the neodymium iron boron magnet to the sealing cap cover is smaller than the connecting force with the connecting piece, the neodymium iron boron magnet is prevented from generating large magnetic force to the sealing cap cover, the neodymium iron boron magnet is taken out when the sealing cap cover is disassembled and replaced, and the good contact performance and the sealing performance are ensured. And can play limiting displacement to first sealing cap 1 and second sealing cap 2, avoid carelessly making sealing cap horizontal migration and lose the protection to the neodymium iron boron magnetism body.

Referring to fig. 5, adopting this kind of structure, 5 both ends of connection piece are direct overlap joint respectively at the edge of two adjacent steel structure 10, and the one side that is equipped with the through-hole is the bottom surface of connection piece 5, and with steel structure 10 contact, the one side of establishing the recess is the top surface of connection piece 5, and the neodymium iron boron magnet is placed respectively in two recesses, and its magnetic force that mainly has through neodymium iron boron magnet self extrudees connection piece 5, makes connection piece 5 and steel structure 10 produce frictional force and reaches the fastening effect.

When the steel structure is installed, only the connecting sheet 5 is in direct contact with the steel structure 10, the anti-corrosion layer on the surface of the steel structure 10 cannot be damaged, and the corrosion resistance of the steel structure is improved; and all be provided with the anticorrosive coating on the surface of connection piece 5 and neodymium iron boron magnetism body, further improved the corrosion resistance between whole device and steel structure 10 in the follow-up use, reduced the cost of maintenance and repair. And the magnetic force connection effect of the neodymium iron boron magnet and other parts of the device is higher than that of the steel structural member 10, and the connecting sheet, the neodymium iron boron magnet and the sealing cap can be integrally installed during installation, so that the number of installation parts is reduced, and the installation or the disassembly is simpler, more convenient and faster.

The anti-corrosion layer on the surface of the steel structural member 10 and the surface of the fixedly connecting device cannot be damaged in assembling, overlapping, mounting and dismounting of the structure, the device is also provided with the anti-corrosion layer, and the device can be dismounted in operation, inspection and maintenance without special tools, so that the problem that the fixedly connecting part on the surface of the steel structural member is easy to rust or even be rusted due to the fact that the environment of the transformer substation is humid is solved, the labor cost, the time cost and the economic cost are saved, and the engineering construction cost and the project operation cost are saved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a transformer substation's oil pit light steel structure magnetic force rigid coupling device which characterized in that: including connection piece (5), be equipped with spaced first recess (6) and second recess (7) on connection piece (5), place first neodymium iron boron magnet (3) in first recess (6), first recess (6) bottom restriction first neodymium iron boron magnet (3) axial motion, place second neodymium iron boron magnet (4) in second recess (7), second recess (7) bottom restriction second neodymium iron boron magnet (4) axial motion, first through-hole (8) and second through-hole (9) have been seted up respectively to first recess (6) and second recess (7) bottom.

2. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: the first neodymium iron boron magnet (3) and the second neodymium iron boron magnet (4) are N45 magnets.

3. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: an anti-corrosion layer is arranged on the surface of the neodymium iron boron magnet and/or the connecting sheet (5).

4. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: the connecting sheet (5) is in a strip shape.

5. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: and an insulating layer is arranged at the bottom of the connecting sheet (5).

6. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: the recess is the column recess, and the through-hole is the column hole, and recess and through-hole coaxial arrangement form the step hole, pass through hole shoulder (13) transition between recess and the through-hole, hole shoulder (13) restriction neodymium iron boron magnetism body axial motion.

7. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: the cross-sectional area of the first through hole (8) is 30% -90% of that of the first neodymium-iron-boron magnet (3), and the cross-sectional area of the second through hole (9) is 30% -90% of that of the second neodymium-iron-boron magnet (4).

8. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 1, characterized in that: still include first sealed block (1) and the sealed block of second (2), first sealed block (1) cover is established on first neodymium iron boron magnetism body (3) with connection piece (5) contact, the sealed block of second (2) cover is established on second neodymium iron boron magnetism body (4) with connection piece (5) contact.

9. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 8, characterized in that: the axial height of first neodymium iron boron magnetism body (3) is higher than the height of first recess (6), the axial height of second neodymium iron boron magnetism body (4) is higher than the height of second recess (7), first sealed block (1) sets up first inner chamber (11) that hold first neodymium iron boron magnetism body (3), the second sealed block (2) are established and are held second inner chamber (12) of second neodymium iron boron magnetism body (4).

10. The magnetic force fixing device for the transformer substation oil pit light steel structural part according to claim 8, characterized in that: the connecting piece (5) is a stainless steel sheet or a galvanized steel sheet, and the first sealing cap (1) and the second sealing cap (2) are stainless steel caps or galvanized caps.

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