CN215815487U - Mutual inductor fixing device - Google Patents

Abstract

The utility model provides a mutual inductor fixing device for fix the mutual inductor body on the whippletree in the transformer cabinet, fixing device includes insulating base, insulating base's lower surface is hugged closely the whippletree setting, the mutual inductor body below is provided with the connecting seat, be provided with connecting screw between connecting seat and the insulating base and be connected, insulating base is provided with first spacing blind hole in the position that corresponds with the connecting seat through-hole, insulating base's side is provided with the spacing blind hole of several second, the afterbody and the end connection of first spacing blind hole of the spacing blind hole of second, be provided with spacing hasp in the spacing blind hole of second, the afterbody of connecting screw is provided with bellied spacing plush copper, centers on the tail end of spacing hasp is provided with spacing fixed rail, spacing plush copper can insert in the spacing fixed rail. The fixing device is provided with the insulating base between the mutual inductor and the cross bar, so that public safety is prevented from being damaged when the mutual inductor leaks electricity.

Description

Mutual inductor fixing device

Technical Field

The utility model relates to the field of mutual inductor manufacturing, in particular to a mutual inductor fixing device.

Background

In the power supply line, the current varies from a few amperes to tens of thousands of amperes, and the voltage varies from a few volts to millions of volts. The current and voltage in the line are relatively high, and direct measurement is very dangerous. In order to facilitate the conversion of the secondary instrument measurement into more uniform current and voltage, the transformer is used for converting current and voltage and electrically isolating. The transformers are divided into two categories, voltage transformers and current transformers. The voltage transformer can be used for measuring voltage and power in high-voltage and ultrahigh-voltage power systems. Current transformers can be used for measurement of exchange current, measurement of exchange current and protection in electrically driven lines.

The mutual inductor that uses in the existing market is fixed comparatively at will, directly fixes on the whippletree of transformer cabinet through the connecting seat and the metal bolt of metal material, because the circuit that uses the mutual inductor is many to be tens of thousands of ann's the high-tension electricity of hundreds of thousands of volts, the mutual inductor in case takes place the electric leakage, can lead to whole transformer cabinet all electrified, can cause very big hidden danger to public safety.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a transformer fixing device, wherein an insulating base is disposed between the transformer fixing device and a horizontal bar inside a transformer cabinet to prevent the transformer from being directly connected to the transformer cabinet. When preventing the mutual-inductor electric leakage, the electric current stretches to whole transformer cabinet.

The technical scheme of the utility model is as follows:

a mutual inductor fixing device is used for installing and fixing a mutual inductor body on a cross bar, and comprises an insulating base, wherein the insulating base is made of insulating materials, the lower surface of the insulating base is arranged to be tightly attached to the cross bar, a connecting seat is arranged below the mutual inductor body, a plurality of through holes are formed in the connecting seat, connecting screws penetrate through the through holes to enable the connecting seat to be connected with the insulating base, a spring is arranged between the head of each connecting screw and the connecting seat, the spring can filter external vibration and avoid working errors of the mutual inductor caused by the external vibration, a first limiting blind hole is formed in the insulating base at a position corresponding to the through holes of the connecting seat, a plurality of second limiting blind holes are formed in the side surface of the insulating base, the tail parts of the second limiting blind holes are connected with the tail parts of the first limiting blind holes, and limiting lock catches are arranged in the second limiting blind holes, the tail of the connecting screw is provided with a raised limiting raised head, the tail end of the limiting lock catch is provided with a limiting fixed rail, the limiting raised head can be inserted into the limiting fixed rail, and the limiting lock catch is rotated to complete the position limitation of the connecting screw and the limiting lock catch. Because the insulating material that makes the insulating base is soft for most materials, if adopt self-tapping or expansion bolts's mode to install, can damage insulating base's structure, need change together with insulating base when changing the mutual-inductor, increased the maintenance cost, fixing device adopts the mode of spacing plush copper and spacing hasp to fix mutual-inductor and insulating base, can enough avoid the mutual-inductor directly to connect the whippletree of thixotropic electricity cabinet, also can not damage insulating base's structure, dismantles simply moreover, the operation of being convenient for.

According to the mutual inductor fixing device, the insulating base is provided with the plurality of through holes which penetrate through the insulating base from top to bottom, and the bolts penetrate through the through holes to enable the insulating base to be tightly attached to the cross bars.

Furthermore, the thickness of the insulating base is 1-2 times of the thickness of the cross bar, so that the limiting lock catch is convenient to set, the larger the limiting lock catch is, the better the limiting effect is, if the thickness of the insulating base is thinner, the limiting lock catch with the larger diameter cannot be used, the fixing effect is influenced, and if the thickness of the insulating base is thinner, the insulating base can crack easily, the structural strength is influenced, the area of the insulating base is larger than that of the connecting base, and the connecting base of the mutual inductor body can be arranged on the insulating base.

According to the mutual inductor fixing device, the diameter of the head of the connecting screw is larger than the inner diameter of the spring arranged below the connecting screw, so that the head of the connecting screw cannot penetrate through the middle of the spring, and the connecting rod is arranged between the head and the tail of the connecting screw for connection.

Furthermore, the diameter of the connecting rod is 0-1mm larger than that of the first limiting blind hole, so that the connecting rod can penetrate through the first limiting blind hole and cannot shake violently in the first limiting blind hole.

Furthermore, the limiting raised head at the tail part of the connecting screw is spherical, and the diameter of the limiting raised head is not larger than that of the first limiting blind hole.

Furthermore, a limiting groove is formed between the limiting raised head and the connecting rod.

Furthermore, an insertion hole is formed in the position, in contact with the limiting raised head, of the limiting fixed rail of the limiting lock catch, the diameter of the insertion hole is not smaller than that of the limiting raised head, the width of the inner side of the limiting fixed rail is not smaller than that of the limiting raised head, a sliding groove is formed in the upper portion of the limiting fixed rail, and the width of the sliding groove is larger than that of the limiting groove and smaller than that of the limiting raised head. The limiting raised head can be inserted into the limiting fixed rail from the insertion hole, the limiting lock catch is rotated, the limiting raised head can be locked in the limiting fixed rail and cannot be separated, and installation and fixation of the mutual inductor and the insulating base are completed.

Utility model for prior art gained beneficial effect lie in:

according to the fixing device for the mutual inductor, the insulating substrate is arranged between the mutual inductor and the cross bar of the transformer cabinet, so that the mutual inductor is prevented from being directly contacted with the cross bar of the transformer cabinet, and the transformer cabinet is prevented from being electrified when the mutual inductor leaks electricity, and public safety is prevented from being influenced. The fixing device adopts a mode that the connecting screw rod is matched with the limiting lock catch to fix the mutual inductor on the insulating substrate, so that the fixing mode that the structure of the substrate is easily damaged by using self-tapping screws, expansion bolts and the like is avoided, and the mutual inductor on the insulating substrate can still be kept complete even if being disassembled for many times.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.

In the drawings:

fig. 1 is a front view of a transformer fixing apparatus in embodiment 1;

fig. 2 is a plan view of a transformer fixing apparatus according to embodiment 1;

FIG. 3 is a side view of a transformer fixing apparatus according to embodiment 1;

FIG. 4 is a schematic view showing the installation of the connection screw and the limit lock in embodiment 1;

fig. 5 is a schematic view of a structure of the limiting lock catch in embodiment 1;

FIG. 6 is a cross-sectional view of the A-A position marker of FIG. 5;

the components represented by the reference numerals in the figures are:

1. mutual inductor body, 11, connecting seat, 2, horizontal bar, 3, insulating base, 31, first spacing blind hole, 32, the spacing blind hole of second, 4, connecting screw, 41, spring, 42, gasket, 43, connecting rod, 44, spacing recess, 45, spacing plush copper, 5, spacing hasp, 51, spacing fixed rail, 52, spout, 53, fixed slot, 54, patchhole.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

The directions "front and back", "left and right", etc. mentioned in the present invention are only used to express the relative positional relationship, and are not restricted by any specific directional references in practical application.

Example 1

A mutual inductor fixing device is used for installing and fixing a mutual inductor body 1 on a cross bar 2, the fixing device comprises an insulating base 3, the insulating base 3 is made of insulating materials, the lower surface of the insulating base 3 is tightly attached to 2 parallel cross bars 2 in the embodiment, a connecting seat 11 is arranged below the mutual inductor body 1, 4 through holes are formed in the connecting seat 11 in the embodiment, connecting screws 4 penetrate through the through holes to enable the connecting seat 11 to be connected with the insulating base 3, springs 41 are arranged between the heads of the connecting screws 4 and the connecting seat 11, the springs 41 can filter external vibration to avoid working errors of the mutual inductor caused by the external vibration, first limiting blind holes 31 are formed in the positions, corresponding to the through holes of the connecting seat 11, of the insulating base 3, and 4 second limiting blind holes 32 are formed in the side surface of the insulating base 3 in the embodiment, the tail of the second limiting blind hole 32 is connected with the tail of the first limiting blind hole 31, a limiting lock catch 5 is arranged in the second limiting blind hole 32, a raised limiting raised head 45 is arranged at the tail of the connecting screw 4, a limiting fixed rail 51 is arranged around the tail end of the limiting lock catch 5, the limiting raised head 45 can be inserted into the limiting fixed rail 51, and the limiting lock catch 5 is rotated to complete the position limitation of the connecting screw 4 and the limiting lock catch 5. Because the insulating material majority material of making insulating base 3 is softer, if adopt self-tapping or expansion bolts's mode to install, can damage insulating base 3's structure, need change together with insulating base 3 when changing the mutual-inductor, increased the maintenance cost, fixing device adopts spacing plush copper 45 and spacing hasp 5's mode to fix mutual-inductor and insulating base 3, can enough avoid the mutual-inductor directly to connect the whippletree 2 of electricity cabinet, also can not damage insulating base 3's structure, dismantles simple moreover, the operation of being convenient for.

Preferably, the insulating base 3 of this embodiment is made of oak, and the oak texture is compact, and the texture is fine and smooth, and easily drilling, is fit for being used for making insulating base 3.

According to the fixing device for the mutual inductor, in the embodiment, the insulating base 3 is provided with the through hole 4 penetrating vertically, the bolt passes through the through hole, and the insulating base 3 is arranged to be close to the cross bar 2.

Further, the thickness of insulating base 3 is 1.3 times of 2 thickness of whippletree, makes spacing hasp 5 be convenient for set up, spacing hasp 5 is big more fixed spacing effect better, can lead to the spacing hasp 5 that can't use great diameter if the thickness of insulating base 3 is thinner, influences fixed effect, just insulating base 3 can split more easily if the thickness is thinner, influences structural strength, the area of insulating base 3 is greater than the area of connecting seat 11, makes connecting seat 11 of mutual-inductor body 1 can set up on insulating base 3.

In the transformer fixing device, the diameter of the head of the connecting screw 4 is larger than the inner diameter of the spring 41 arranged below the head, so that the head of the connecting screw 4 cannot penetrate through the middle of the spring 41, and a connecting rod 43 is arranged between the head and the tail of the connecting screw 4 for connection.

Preferably, a gasket 42 is arranged between the spring 41 and the upper surface of the connecting seat 11, the gasket 42 is made of metal, the gasket 42 enables the elastic force of the spring 41 to be applied to the gasket 42 and then to be uniformly dispersed on the connecting seat 11, and the spring 41 is prevented from shaking back and forth due to uneven stress, so that the mutual inductor body 1 on the connecting seat 11 is further prevented from shaking.

Further, the diameter of the connecting rod 43 is equal to that of the first limit blind hole 31, so that the connecting rod 43 can penetrate through the first limit blind hole 31, and the connecting rod 43 cannot shake violently in the first limit blind hole 31.

Furthermore, a limiting raised head 45 at the tail part of the connecting screw 4 is spherical, and the diameter of the limiting raised head 45 is not larger than that of the first limiting blind hole 31.

Further, a limit groove 44 is arranged between the limit raised head 45 and the connecting rod 43.

Further, an insertion hole 54 is formed in a position, in which the limiting fixing rail 51 of the limiting lock catch 5 contacts the limiting raised head 45, the diameter of the insertion hole 54 is not smaller than the diameter of the limiting raised head 45, the width of the inner side of the limiting fixing rail 51 is not smaller than the diameter of the limiting raised head 45, a sliding groove 52 is formed above the limiting fixing rail 51, and the width of the sliding groove 52 is larger than the width of the limiting groove 44 and is smaller than the diameter of the limiting raised head 45. The limiting raised head 45 can be inserted into the limiting fixed rail 51 from the insertion hole 54, the limiting lock catch 5 is rotated, the limiting raised head 45 can be locked in the limiting fixed rail 51 and cannot be separated, and the installation and fixation of the mutual inductor and the insulating base 3 are completed.

Preferably, the deflection angle between the head and the tail end of the limit fixing rail 51 is 180 degrees in the embodiment.

Furthermore, the inner side of the tail end of the limit fixing rail 51 is provided with a fixing groove 53 which is recessed upwards, the shape of the fixing groove 53 is matched with that of the limit raised head 45, when the limit raised head 45 is inserted into the insertion hole 54 at the head of the limit fixing rail 51, the limit lock catch 5180 degrees is rotated, the limit raised head 45 comes below the fixing groove 53, under the action of the spring 41, the limit raised head 45 moves upwards and sinks into the fixing groove 53, so that the limit raised head 45 is prevented from freely sliding in the limit fixing rail 51, when the connecting screw 4 is required to be pulled out, the connecting screw 4 is pressed down, the limit raised head 45 is pulled out from the fixing groove 53, and the limit lock catch 5 rotates 180 degrees in the opposite direction, so that the connecting screw 4 can be pulled out.

The transformer fixing device comprises the following specific installation steps:

1) 4 threaded holes are respectively punched in two parallel cross bars 2 in the transformer cabinet, and the threaded holes are distributed in a rectangular shape;

2) 4 hexagon bolts respectively penetrate through 4 through holes on the outer side of the insulating substrate and are screwed into threaded holes in the cross bars 2, and the insulating substrate is fixed on the two cross bars 2;

3) the first limiting blind hole 31 is formed by plugging a limiting lock catch 5 into the second limiting blind hole 32 of the insulating substrate and ensuring that the insertion hole 54 of the limiting lock catch 5 is opposite to the first limiting blind hole;

4) the connecting screw 4 is used for sequentially penetrating through the spring 41, the gasket 42 and the through hole on the connecting seat 11, the connecting rod 43 of the connecting screw 4 penetrates through the first limiting blind hole 31, the limiting boss 45 at the tail end of the connecting rod 43 is inserted into the insertion hole 54, and the limiting groove 44 is aligned to the sliding groove 52 above the limiting fixed rail 51;

5) the limiting lock catch 5 rotates for 180 degrees;

6) and repeating the steps 3-5, locking the 4 sets of connecting screws 4 and the limiting lock catches 5 to complete the fixation of the insulating substrate and the mutual inductor body 1, and finishing the installation of the fixing device.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (8)

1. A mutual inductor fixing device is used for installing and fixing a mutual inductor body (1) on a cross bar (2), and is characterized by comprising an insulating base (3), wherein the insulating base (3) is made of an insulating material, the lower surface of the insulating base (3) is tightly attached to the cross bar (2) and is arranged, a connecting seat (11) is arranged below the mutual inductor body (1), a plurality of through holes are formed in the connecting seat (11), a connecting screw (4) is arranged in each through hole to penetrate through the through holes, so that the connecting seat (11) is connected with the insulating base (3), a spring (41) is arranged between the head of the connecting screw (4) and the connecting seat (11), a first limiting blind hole (31) is formed in the position, corresponding to the through hole of the connecting seat (11), of the insulating base (3), a plurality of second limiting blind holes (32) are formed in the side surface of the insulating base (3), the tail of the second limiting blind hole (32) is connected with the tail of the first limiting blind hole (31), a limiting lock catch (5) is arranged in the second limiting blind hole (32), the tail of the connecting screw (4) is provided with a raised limiting raised head (45), the tail end of the limiting lock catch (5) is surrounded by a limiting fixed rail (51), the limiting raised head (45) can be inserted into the limiting fixed rail (51), and the limiting lock catch (5) is rotated to complete the position limitation of the connecting screw (4) and the limiting lock catch (5).

2. The mutual inductor fixing device according to claim 1, wherein a plurality of through holes are formed in the insulating base (3) and penetrate through the through holes, bolts are inserted into the through holes, and the insulating base (3) is tightly attached to the cross bar (2).

3. Mutual inductor fixing device according to claim 2, characterized in that the thickness of the insulating base (3) is 1-2 times the thickness of the cross bar (2), and the area of the insulating base (3) is larger than the area of the connecting base (11).

4. Mutual inductor fixing device according to claim 1, characterized in that the head of the connecting screw (4) has a larger diameter than the inner diameter of the spring (41) arranged therebelow, and a connecting rod (43) is arranged between the head and the tail of the connecting screw (4) for connection.

5. Mutual inductor fixing device according to claim 4, characterized in that the diameter of the connecting rod (43) is 0-1mm larger than the diameter of the first blind limiting hole (31).

6. Mutual inductor fixing device according to claim 4, characterised in that the limiting projection (45) at the tail of the connection screw (4) is spherical in shape, the diameter of the limiting projection (45) also being no greater than the diameter of the first limiting blind hole (31).

7. Mutual inductor fixing device according to claim 6, characterized in that a limiting recess (44) is provided between the limiting projection (45) and the connecting rod (43).

8. The mutual inductor fixing device according to claim 7, wherein an insertion hole (54) is formed in a position, in which the limiting fixing rail (51) of the limiting lock catch (5) is in contact with the limiting boss (45), of the limiting lock catch, the diameter of the insertion hole (54) is not smaller than that of the limiting boss (45), the width of the inner side of the limiting fixing rail (51) is not smaller than that of the limiting boss (45), a sliding groove (52) is formed above the limiting fixing rail (51), and the width of the sliding groove (52) is larger than that of the limiting groove (44) and is smaller than that of the limiting boss (45).

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