TWM646377U - Holding device for current transformer and transformer - Google Patents

Abstract

This invention is a current comparator holding device and a transformer. The current comparator holding device provides installation and fixation of the current comparator unit. When the conductor passes through the current comparator unit through the current comparator holding device, the conductor and the current comparator unit The inner edges of the sensing holes are separated by sufficient insulation spacing so that the conductor has sufficient insulation distance from the ground, and the current comparator holding device provides sufficient creepage distance from the conductor surface to the current comparator unit surface without causing Voltage conduction to avoid malfunction problems. In addition, a current comparator holding device is provided in the transformer, and a current comparator unit is installed in the current comparator holding device to induce the current passing through the conductor of the current comparator unit.

Description

Current comparator holding device and transformer

The invention relates to a holding device, especially a holding device for installing a current comparator, and the holding device can be installed in a transformer.

Transformers account for an important part of the power transmission system, making transformer stability and protection an important topic. Therefore, designers of power transmission systems will use various types of relays to monitor and protect transformers to avoid abnormal situations. The monitoring current of the electric relay is much smaller than the output current of the transformer, so it is necessary to convert the output current into a monitoring current that can be used by the electric relay through a current comparator in order to monitor the current changes of the transformer.

Traditional transformers use a current comparator holder to install the current comparator in the bushing box of the transformer. For example, Taiwan's new patent No. M609100, the new patent name is "The current comparator fixing structure for the bushing of the transformer" is in the transformer. A current comparator fixing structure is provided in a plurality of bushing boxes fixed at the upper part, and the current comparator is fixed using the current comparator fixing structure, so that the current comparator can be used to sense the current of the transformer.

However, the solution of installing current comparators in the bushing box of the transformer is no longer sufficient to cope with the trend of installing many current comparators inside the transformer to monitor and protect the transformer in many aspects. In addition, the structure and size of the conventional current comparator holding device are not suitable for being directly disposed in a tight structure between the transformer core and the transformer casing. For example, it is known that the current comparator holds The structure of the device cannot effectively keep the high-voltage conductor from contacting the sensing hole of the current comparator, and it is also difficult to provide sufficient creepage distance between the high-voltage conductor and the current comparator, which easily causes a series of power safety problems. Therefore, the conventional current comparator The structure of the holding device still needs to be improved.

The main purpose of this invention is to provide a holding device for a current comparator installed in a transformer.

According to the above purpose, the present invention provides a current comparator holding device, which includes a current comparator mounting module, a connector, a first conductor limiting member, a plurality of insulating spacers and a second conductor limiting member. The flow comparator installation module is provided with a flow comparator unit inside. The flow comparator installation module is provided with a first through portion that runs between two opposite sides of the flow comparator installation module. The first through portion is projected onto the flow comparator. The position inside the installation module corresponds to the range of the sensing hole of the flow comparator unit. One of the two opposite sides of the connecting piece is disposed on one of the opposite sides of the flow comparator mounting module. The connecting piece is provided with a second through portion, and the second through portion communicates with the first through portion. The first conductor limiter is provided with a first limit through hole. The first limit through hole is connected to two opposite sides of the first conductor limiter. One of the opposite sides of the first conductor limiter is provided on the connecting piece. The other side of the opposite side. One of the opposite sides of the plurality of insulating spacers is disposed on the other side of the opposite sides of the current comparator installation module. The second conductor limiter is disposed on the other side of the opposite sides of each insulating spacer. The second conductor limiter is provided with a second limiter through hole. The second limiter through hole is connected to the second conductor limiter. opposite sides. When the conductor passes through the first limiting through hole, the second through portion, the first through portion, the sensing hole and the second limiting through hole, the current comparator holding device, the first limiting through hole and the second limiting through hole, The inner edges of the via-hole limiting conductor sensing holes are spaced apart.

Wherein, the flow comparator mounting module includes a first flow comparator mounting part and a second flow comparator mounting part. The first flow comparator mounting member includes a first groove and a first through hole. The first groove is provided on one of the two opposite sides of the first flow comparator mounting member facing the flow comparator unit. The first groove supplies A part of the flow comparator unit is installed, and the first through hole is provided at a position of the first flow comparator mounting component relative to the sensing hole and communicates with the first groove. The second flow comparator mounting piece includes a second groove and a second through hole. The second groove is provided on the other side of the second flow comparator mounting piece facing two opposite sides of the flow comparator unit. The second groove Another part of the flow comparator unit is supplied for installation. There is a gap between the second flow comparator mounting part and the first flow comparator mounting part. The second through hole is set at the position of the second flow comparator mounting part relative to the sensing hole, and Connected to the second groove.

Wherein, the flow comparator unit is a single through-type flow comparator, and the sensing hole is the center hole of a single through-type flow comparator, or the flow comparator unit is a plurality of through-type flow comparators, and the flow comparator unit is a plurality of through-type flow comparators. They are stacked together in sequence, and the sensing holes are formed by stacking the central holes of a plurality of through-type flow comparators.

Wherein, the current comparator holding device further includes a plurality of first locking parts, the connecting part is provided with a plurality of first mounting holes on the periphery corresponding to the first groove, and the first conductor limiting parts correspond to the positions of the plurality of first mounting holes respectively. A first locking hole is provided, the first current regulator mounting piece is provided with a second locking hole at a position corresponding to the plurality of first mounting holes, and each first locking member passes through the corresponding first locking hole and the first locking hole. A mounting hole and a second locking hole are used to connect the first conductor limiting member and the first current comparator mounting member together, and the connecting member is connected between the first conductor limiting member and the first current comparator mounting member. between.

The connecting member is two connecting rods, and a second through portion is formed between the two connecting rods. Both ends of the connecting rod extend beyond the first conductor limiting piece and the first current comparator mounting piece for connecting to the bracket in the transformer.

Wherein, the current collector holding device further includes a plurality of second locking members, each insulating spacer is further provided with a second mounting hole, and the second conductor limiting member is provided with a plurality of third locking members corresponding to each second mounting hole. hole, the second flow regulator mounting piece is provided with a plurality of fourth locking holes corresponding to each third locking hole, and each second locking piece passes through the third locking hole, the second installation hole and the fourth locking hole. hole, and connect the second conductor limiting piece and the second current comparator mounting piece together.

Wherein, the current collector holding device further includes a plurality of second locking members, each insulating spacer is further provided with a second mounting hole, and the second conductor limiting member is provided with a plurality of third locking members corresponding to each second mounting hole. hole, the second flow comparator mounting piece is provided with a plurality of fourth locking holes corresponding to each third locking hole, and the first flow comparator mounting piece is provided with a plurality of third mounting holes corresponding to each fourth locking hole. , the connector is provided with a plurality of fourth installation holes corresponding to each third installation hole, the first conductor limiting member is provided with a plurality of fifth installation holes corresponding to each fourth installation hole, and each second locking member passes through the third installation hole. Three locking holes, the second mounting hole, the fourth locking hole, the third mounting hole, the fourth mounting hole and the fifth mounting hole, and are installed according to the second conductor limiter, the insulating spacer and the second flow regulator. The above components are connected in sequence, including the first current comparator mounting piece, the connecting piece and the first conductor limiting piece.

Wherein, the plurality of second fasteners are insulating screws, and the plurality of insulating spacers are insulating nuts.

This invention also provides a transformer, which includes a shell, a transformer core, a bracket, a transformer bushing, the above-mentioned current comparator holding device and the above-mentioned current comparator unit. The transformer core body is arranged in the outer casing. The transformer core body also includes an iron core and a plurality of windings, and the windings are wound around the iron core. The bracket is located between the shell and the transformer core. The transformer bushing is arranged on the outside of the casing. The connecting piece of the flow comparator holding device as mentioned above is connected to the bracket. The conductor drawn out from the winding passes through the first limiting through hole, the second through-portion, the first through-portion, the induction hole and the second limiting through-hole and is then introduced into the transformer bushing.

Among them, the transformer bushing is arranged on the shell above the transformer core body, so that the central axis of the transformer bushing corresponds to the periphery of the horizontal range of the transformer core body, the bracket is arranged on the transformer core body, and the conductor passes through it perpendicular to the ground plane. The first limiting through hole, the second through portion, the first through portion, the sensing hole and the second limiting through hole are then introduced into the transformer bushing.

Among them, the conductor is drawn from the high-voltage side of the winding.

Among them, the bracket is arranged on the transformer core body, and the bracket is provided with a bearing member. The bearing member extends horizontally beyond the transformer core body to connect with the connecting piece.

According to the above, this invention can keep the current comparator unit and the conductor from contacting when the current comparator unit and the transformer are operating and vibrating, and can effectively increase the creepage distance between the current comparator unit and the conductor, and can easily change the above-mentioned creepage distance. In addition, this invention can facilitate the assembly of the current comparator holding device and the current comparator unit in a compact transformer. The invention can facilitate the installation of additional current comparator holding devices and current comparator units in the limited space between the transformer core body and the outer shell. In order to reduce the high cost of changing the design of the transformer and its bushing due to the addition of the current comparator holding device and the current comparator unit.

1: Flow comparator holding device

10: Flow comparator installation module

100:First penetration department

101: First flow comparator installation piece

1010: first groove

1011: First piercing

1012:Second locking hole

1013:Third mounting hole

102:Second flow comparator installation piece

1020: Second groove

1021: Second piercing

1022: The fourth locking hole

11: Connectors

110:Second penetration department

111:First mounting hole

112:Connecting rod

113:Fourth mounting hole

114:Connection hole

12:First conductor limiter

120: First limit through hole

121:First locking hole

122:Fifth mounting hole

13: Insulation spacer

130: Second mounting hole

14:Second conductor limiter

140: Second limit through hole

141:Third locking hole

15:First lock firmware

150:First screw

151:First nut

16:Second lock firmware

160:Second screw

161:Second nut

2:Flow comparator unit

20: Induction hole

3:Conductor

4: Shell

5: Transformer core body

6: Bracket

60: Hanging hole

61: Bearing part

7: Transformer bushing

70: Casing box

G: Gap

The first picture is a schematic diagram of a conductor passing through the current comparator holding device and current comparator of this invention.

The second figure is a cross-sectional view along line A-A in the first figure with the conductor omitted.

The third picture is an exploded view of the first picture.

The fourth figure is a cross-sectional view along line B-B in the first figure, omitting the conductor, one of the first fasteners and one of the second fasteners.

The fifth figure is a cross-sectional view along line C-C in the first figure, omitting the conductor and one of the second fasteners.

The sixth picture is a side perspective view of the transformer of this creation.

The seventh picture is a top perspective view of the transformer of this creation.

The eighth picture is a perspective view of the other side of the transformer of this creation.

The embodiments of this invention will be further explained below with the help of relevant figures. Wherever possible, the same reference numbers are used in the drawings and description to refer to the same or similar components. In the drawings, shapes and thicknesses may be exaggerated for simplicity and ease of notation. It should be understood that components not specifically shown in the drawings or described in the specification are in forms known to those of ordinary skill in the art. Those of ordinary skill in the art can make various changes and modifications based on the contents of this invention.

Please refer to the first picture. The first picture is a schematic diagram of the flow comparator holding device of this invention. The current comparator holding device 1 of the present invention includes a current comparator installation module 10, a connector 11, a first conductor limiting member 12, a plurality of insulating spacers 13 and a second conductor limiting member 14.

Here, please refer to the second figure and the third figure at the same time. The second figure is a cross-sectional view along line A-A of the first figure, and the third figure is an exploded view of the first figure. In some embodiments, the flow comparator unit 2 is provided inside the flow comparator installation module 10 , and the flow comparator installation module 10 is provided with a first through portion 100 penetrating between two opposite sides of the flow comparator installation module 10 . , the first through-portion 100 is projected into the range of the sensing hole 20 of the flow comparator unit 2 at a position inside the flow compensator mounting module 10 .

The flow comparator mounting module 10 includes a first flow comparator mounting part 101 and a second flow comparator mounting part 102 . The first flow regulator mounting member 101 includes a first groove 1010 and a first through hole 1011. The first groove 1010 is provided on one of the two opposite sides of the first flow regulator mounting member 101 facing the flow regulator unit 2. . No. A groove 1010 is provided for mounting a part of the flow comparator unit 2 . A first through hole 1011 is provided at a position of the first flow comparator mounting member 101 relative to the sensing hole 20 and communicates with the first groove 1010 .

The second flow regulator mounting member 102 includes a second groove 1020 and a second through hole 1021. The second groove 1020 is provided on the other side of the second flow regulator mounting member 102 facing the flow regulator unit 2. side. The second groove 1020 is for installing another part of the flow comparator unit 2. There is a gap G between the second flow compensator mounting part 102 and the first flow comparator mounting part 101. The second through hole 1021 is provided in the second flow comparator unit 2. The position of the device mounting member 102 relative to the sensing hole 20 is connected to the second groove 1020 .

It is worth noting that, as shown in the second and fifth figures, the first through hole 1011 , the second through hole 1021 and the space in the corresponding sensing hole 20 between them constitute the above-mentioned first through portion 100 . The first groove 1010, the second groove 1020 and the gap G accommodate a part of the flow comparator unit 2. This part of the flow comparator unit 2 includes the sensing hole 20 and a part of the flow comparator around the entire periphery of the sensing hole 20. Unit 2 structure, and the inner edges of the first groove 1010 and the second groove 1020 are assembled with the outer edge of the flow comparator unit 2 in a tight fit, so that the flow comparator holding device 1 can hold the flow comparator unit 2 function, while taking into account the effect of reducing space, weight and heat dissipation of the flow comparator unit 2.

In this creation, the flow comparator unit 2 is a single through-type flow comparator, and the sensing hole 20 is the center hole of a single through-type flow comparator, or the flow comparator unit 2 is a plurality of through-type flow comparators, plural The through-type flow comparators are stacked together in sequence, and the sensing hole 20 is formed by stacking the center holes of a plurality of through-type flow comparators. In this invention, the flow comparator unit 2 is illustrated with a single through-type flow comparator. . In addition, when the flow comparator unit 2 has two through-type flow comparators, the first groove 1010 includes a part of one of the through-type flow comparators, and the second groove 1020 includes a part of the other through-type flow comparator. part. Or when the flow comparator unit 2 has more than three through-type flow comparators, the first groove 1010 includes a part of one or more of the through-type flow comparators, and the second groove 1020 includes other remaining through-type flow comparators. Mode However, as a part of the current comparator, the entire current comparator unit 2 can still be accommodated in the first groove 1010, the second groove 1020 and the gap G as needed without departing from the spirit of the invention.

As shown in the fourth figure, one of the two opposite sides of the connecting member 11 is provided on one of the opposite sides of the flow comparator mounting module 10. The connecting member 11 is provided with a second through portion 110. The second through portion 110 communicates with the first through portion 100 .

The first conductor limiting part 12 is provided with a first limiting through hole 120 . The first limiting through hole 120 connects two opposite sides of the first conductor limiting part 12 . One of the two opposite sides of the first conductor limiting part 12 The two sides are arranged on the other side of the two opposite sides of the connecting member 11 .

In some embodiments, the connecting member 11 is two connecting rods 112, and a second through portion 110 is formed between the two connecting rods 112. Both ends of the connecting rod 112 extend beyond the first conductor limiting member 12 and the first current ratio device. Part 101 for connecting external objects. For example, brackets inside transformers.

Furthermore, the connecting rod 112 extends beyond the first conductor limiting member 12 and the first current comparator mounting member 101, and is also provided with connecting holes 114 penetrating the other two opposite sides of the connecting rod 112 for the bracket to bolt. Bolt or lock with fasteners, etc. However, the connecting rod 112 may not be provided with the connecting hole 114 but may be clamped by a clamp and a bracket, for example. The material of the connecting piece 11 is further an insulating material.

One side of the plurality of insulating spacers 13 on opposite sides is disposed on the other side of the opposite sides of the current comparator installation module 10 . The second conductor limiting member 14 is disposed on the other side of the opposite sides of each insulating spacer 13. The second conductor limiting member 14 is provided with a second limiting through hole 140, and the second limiting through hole 140 is connected to the second limiting through hole 140. Two opposite sides of the conductor limiter 14.

In summary, the current comparator holding device 1 is in a state where the conductor 3 passes through the first limiting through hole 120 , the second through portion 110 , the first through portion 100 , the sensing hole 20 and the second limiting through hole 140 ,First The limiting through hole 120 and the second limiting through hole 140 limit the position of the conductor 3 to be spaced apart from the inner edge of the sensing hole 20 .

Furthermore, the shapes of the first limiting through hole 120 and the second limiting through hole 140 are adapted to the radial cross-sectional shape of the conductor 3, and the outer peripheral shapes of the first groove 1010 and the second groove 1020 are adapted to the specific flow. The radial cross-sectional outer peripheral shape of the device unit 2. However, the first through hole 1011 , the second through hole 1021 , the second through portion 110 and all insulating spacers 13 do not contact the conductor 3 .

In this way, by limiting the position of the conductor 3 and the inner edge of the sensing hole 20 at a distance from the first limiting through hole 120 and the second limiting through hole 140 , and adapting to the radial cross-sectional outer peripheral shape of the current comparator unit 2 The first groove 1010 and the second groove 1020, the current comparator holding device of the invention can keep the current comparator unit 2 and the conductor 3 from contacting when the current comparator unit 2 and the transformer are vibrating, thereby preventing the current comparator unit from being in contact with each other. 2 is a short circuit caused by contact with conductor 3.

The insulating spacer 13 can effectively increase the creeping distance between the contact position between the current comparator unit 2 and the second current comparator mounting part 102 and the contact position between the conductor 3 and the second limiting through hole 140 . Since the conductor 3 is a high-voltage conductor and the current comparator unit 2 is a low-voltage component, if the distance along the surface is insufficient, voltage conduction will occur and cause failure. Therefore, the insulating spacer 13 is used to create an appropriate creepage distance between the current comparator unit 2 and the conductor 3, which can avoid such problems of voltage conduction failure.

In terms of the connection of each component, for the installation of the first conductor limiting piece 12, the connecting piece 11 and the first current comparator mounting piece 101, please refer to the fourth figure. The fourth figure is along the B-B line in the first figure. Cutaway diagram. It should be noted that in order to clearly show the holes used for locking by the first fastener, the conductor, one of the first fasteners and one of the second fasteners are omitted.

The current collector holding device 1 further includes a plurality of first locking parts 15 . The connector 11 is provided with a plurality of first mounting holes 111 on the periphery corresponding to the first groove 1010, and the first conductor limiting member 12 corresponds to a plurality of first mounting holes 111. First locking holes 121 are respectively provided at the positions of the first mounting holes 111 , and second locking holes 1012 are respectively provided at the positions of the first flow regulator mounting member 101 corresponding to the plurality of first mounting holes 111 . Each first locking piece 15 passes through the corresponding first locking hole 121 , the first mounting hole 111 and the second locking hole 1012 to connect the first conductor limiting piece 12 and the first current comparator mounting piece 101 Together, the connecting piece 11 is connected between the first conductor limiting piece 12 and the first current comparator mounting piece 101 . For example, the first fastener 15 is a first screw 150 and a first nut 151 . Optionally, the first screw 150 passes through the first mounting hole 111 and the second locking hole 1012 sequentially from the first locking hole 121, and the first nut 151 is locked from above the first flow regulator mounting member 101. Pass the first screw 150 through the second locking hole 1012 and tighten. However, the first screw 150 can also pass through the first mounting hole 111 and the first locking hole 121 sequentially from the second locking hole 1012, and the first nut 151 is locked under the first conductor limiting member 12 through the first screw 150. Pass the first screw 150 through the first locking hole 121 and tighten.

For another example, the inner walls of the first locking hole 121 and the second locking hole 1012 are smooth surfaces. However, it should be noted that the second locking hole 1012 can be provided with internal threads to lock and tighten with the first screw 150 passing through the first mounting hole 111 from the first locking hole 121 . Alternatively, the first locking hole 121 has internal threads to lock and tighten with the first screw 150 passing through the first mounting hole 111 from the second locking hole 1012 .

For the installation of the second conductor limiting member 14 , the insulating spacer 13 and the second current collector mounting member 102 , the current collector holding device 1 further includes a plurality of second locking members 16 . Each insulating spacer 13 is further provided with a second mounting hole 130. The second conductor limiting member 14 is provided with a plurality of third locking holes 141 corresponding to each second mounting hole 130. The second current regulator mounting member 102 corresponds to Each third locking hole 141 is provided with a plurality of fourth locking holes 1022 . Each second locking member 16 passes through the third locking hole 141, the second mounting hole 130 and the fourth locking hole 1022 to connect the second conductor limiting member 14 and the second current regulator mounting member 102 together. .

For example, the second fastener 16 is a second screw 160 and a second nut 161 . Optionally, the second screw 160 passes through the second mounting hole 130 and the fourth locking hole 1022 sequentially from the third locking hole 141, and the second nut 161 is locked from the bottom of the second flow regulator mounting member 102. Pass the second screw 160 through the fourth locking hole 1022 and tighten. However, the second screw 160 can also pass through the second mounting hole 130 and the third locking hole 141 sequentially from the fourth locking hole 1022, and the second nut 161 is locked through the second conductor limiting member 14. Pass the second screw 160 through the third locking hole 141 and tighten.

For another example, the inner walls of the fourth locking hole 1022 and the third locking hole 141 are smooth surfaces. However, it should be noted that the fourth locking hole 1022 can be provided with internal threads to lock and tighten with the second screw 160 passing through the second mounting hole 130 from the third locking hole 141 . Alternatively, the third locking hole 141 has internal threads to lock and tighten with the second screw 160 passing through the second mounting hole 130 from the fourth locking hole 1022 .

In addition, the third locking hole 141, the second mounting hole 130 and the fourth locking hole 1022 may all have internal threads.

In some embodiments, the flow collector holding device 1 further includes a plurality of second locking parts 16 . Please refer to the fifth figure. The fifth figure is a cross-sectional view along the C-C line of the first figure of this creation. It should be noted that in order to clearly show the structure for the second fastener and the matching lock, the second fastener on the right side has been removed.

Each insulating spacer 13 is further provided with a second mounting hole 130 , and the second conductor limiting member 14 is provided with a plurality of third locking holes 141 corresponding to each second mounting hole 130 . The second flow regulator mounting member 102 is provided with a plurality of fourth locking holes 1022 corresponding to each third locking hole 141 . The first flow regulator mounting member 101 is provided with a plurality of third mounting holes 1013 corresponding to each fourth locking hole 1022 . Connector 11 corresponds to each A third mounting hole 1013 is provided with a plurality of fourth mounting holes 113 . The first conductor limiting member 12 is provided with a plurality of fifth mounting holes 122 corresponding to each fourth mounting hole 113 .

Each second fastener 16 passes through the third locking hole 141, the second mounting hole 130, the fourth locking hole 1022, the third mounting hole 1013, the fourth mounting hole 113 and the fifth mounting hole 122. Thereby, the above components are connected in the order of the second conductor limiting member 14, the insulating spacer 13, the second current collector mounting member 102, the first current collector mounting member 101, the connecting member 11 and the first conductor limiting member 12.

For example, the second fastener 16 is a second screw 160 and a second nut 161 . Optionally, the second screw 160 passes through the fourth mounting hole 113 , the third mounting hole 1013 , the fourth locking hole 1022 , the second mounting hole 130 and the third locking hole 141 in sequence from the fifth mounting hole 122 . The second nut 161 is locked to the second screw 160 passing through the third locking hole 141 from above the second conductor limiting member 14 and tightened. However, the second screw 160 can also pass through the second mounting hole 130 , the fourth locking hole 1022 , the third mounting hole 1013 , the fourth mounting hole 113 and the fifth mounting hole 122 in sequence from the third locking hole 141 . The second nut 161 is locked to the second screw 160 passing through the fifth mounting hole 122 from below the first conductor limiting member 12 and tightened.

For another example, the inner walls of the third locking hole 141 , the fourth locking hole 1022 , the third mounting hole 1013 , the fourth mounting hole 113 and the fifth mounting hole 122 are smooth surfaces. However, it should be noted that the third locking hole 141 can be provided with an internal thread to pass through the fourth mounting hole 113 , the fourth mounting hole 113 , the third mounting hole 1013 , the fourth mounting hole 1013 and the fourth mounting hole 1013 in sequence from the fifth mounting hole 122 . The locking hole 1022 and the second screw 160 of the second mounting hole 130 are locked and tightened. Alternatively, the fifth mounting hole 122 has internal threads to connect with the second mounting hole 130 , the fourth locking hole 1022 , the third mounting hole 1013 and the fourth mounting hole 113 from the third locking hole 141 in sequence. Screw 160 is locked and tightened. After the above-mentioned tightening work is completed, the torsion value of the entire structure can also be confirmed.

Furthermore, the third locking hole 141, the second mounting hole 130, the fourth locking hole 1022, the third mounting hole 1013, the fourth mounting hole 113 and the fifth mounting hole 122 may all have internal threads.

Furthermore, in each of the above embodiments, the insulating spacer 13 can be one or more insulating nuts. In addition, each screw is an insulated screw. Therefore, the insulating spacer 13 of the present invention can easily change the number of insulating nuts according to the high and low voltage difference between the current comparator unit 2 and the conductor 3, thereby conveniently modifying the creepage distance to adapt to various high and low voltages between the current comparator unit 2 and the conductor 3. Difference. Various locking structures can also facilitate the assembly of the current comparator holding device and the current comparator in a compact transformer.

In addition, the above-mentioned current comparator installation module 10, first conductor limiting part 12 and second conductor limiting part 14 can also be made of insulating materials.

The present invention also provides a transformer provided with the above-mentioned current comparator holding device and current comparator. Please refer to the sixth picture, which is a side perspective view of the transformer of this creation. The transformer of this invention includes a shell 4, a transformer core 5, a bracket 6, a transformer bushing 7, a current comparator holding device 1 as described in the above embodiments, and a current comparator unit 2 as described in the above embodiments.

Taking a three-phase transformer as an example, three transformer cores 5 are arranged in the casing 4. The transformer cores 5 also include an iron core and a plurality of windings, and the windings are wound around the iron core.

Three transformer bushings 7 are arranged outside the housing 4 . Furthermore, each transformer bushing 7 is disposed corresponding to the position of one of the transformer cores 5 . The conventional current comparator holding device and current comparator can still be provided in the transformer bushing 7 . In addition, a bushing box 70 corresponding to the transformer bushing 7 is also provided on the outside of the shell 4. A part of the transformer bushing 7 is inside the bushing box 70, and the other part of the transformer bushing 7 protrudes from the upper surface of the bushing box 70. Casing box 70.

As shown in the seventh figure, the seventh figure is a top perspective view of the transformer of this invention. The bracket 6 is located between the housing 4 and the transformer core 5 . For example, the bracket 6 is provided on the transformer core 5, the shell 4 or other both. For another example, the bracket 6 is an assembly frame of a transformer. This assembly is installed on the transformer core body 5 . The upper part of the assembly frame is provided with a hanging hole 60 .

In one example, since the height of a large transformer is usually several meters high, it is necessary to use an assembly frame with hanging holes 60 on the top. The steps for using the assembly rack are to first place the flow comparator holding device 1 and the flow comparator unit 2 on the assembly rack, and then hook the lifting hole 60 through the crane hook to secure the flow comparator holding device 1 and the flow comparator. The assembly frame of unit 2 is hoisted above the transformer core 5. Afterwards, lock the pre-assembled frame to the transformer core body 5 to complete the operation.

However, since the current comparator holding device 1 and the current comparator unit 2 of the present invention are easy to assemble in the casing 4 of the transformer, the assembly frame can also be hoisted above the transformer core 5 first. The pre-assembled frame is then locked to the transformer core body 5, and then the current comparator holding device 1 and the current comparator unit 2 are assembled on the assembly frame.

As shown in the eighth figure, the bearing member 61 of the assembly frame, for example, the bearing member 61 of the plate body or the base body, extends horizontally beyond the transformer core 5 to connect with the above-mentioned connecting member 11, thereby carrying the current regulator holding member. Device 1 and flow comparator unit 2, but the actual implementation of this creation is not limited to this. Any use of the bearing member 61 to connect the connecting member 11, whether horizontally, vertically or in other ways, is advocated by this creation. within the range.

In one example, one end of the base body is disposed on the assembly frame, and the other end of the base body extends horizontally beyond the transformer core 5. The base body serves as the base of the current comparator holding device 1 so that the current comparator holding device 1 is disposed on the base body. superior. In the example of a plate body, one end of the plate body is set on the assembly frame, the other end of the plate body extends horizontally beyond the transformer core 5, and a current comparator holding device 1 with a current comparator unit 2 is set above the plate body. You can choose to set other components below the board.

As shown in the eighth figure, the eighth figure is a perspective view of the transformer of the present invention from the side of a transformer core body. In some embodiments of the present invention, the conductor 3 drawn from the winding passes through the first limiting passage. The hole 120 , the second through portion 110 , the first through portion 100 , the sensing hole 20 and the second limiting through hole 140 are then introduced into the transformer bushing 7 . In some embodiments, conductor 3 is derived from the high voltage side of the winding. However, the voltage at the low-voltage side of the transformer is usually higher than the voltage used by the current comparator unit 2, so the conductor 3 can also be led out from the low-voltage side of the winding without departing from the spirit of the invention.

In detail, the conductor 3 extends beyond the horizontal range of the transformer core 5, and then passes through the first limiting through hole 120, the second through portion 110, the first through portion 100, and the inductor from bottom to top perpendicularly to the ground plane. The hole 20 and the second limiting through hole 140 are introduced into the transformer bushing 7 . Therefore, the transformer bushing 7 is disposed on the housing 4 corresponding to the upper part of the transformer core 5 so that the central axis of the transformer bushing 7 corresponds to the periphery of the horizontal range of the transformer core 5 .

By assembling the current comparator holding device and the current comparator unit in the casing of the transformer, the transformer of the present invention can be installed in the transformer in addition to the current comparator holding device and the current comparator unit provided in the conventional transformer bushing. An additional flow comparator holding device and a flow comparator unit are provided in the limited space between the core body and the outer shell. This eliminates the need to increase the housing size and/or modify the transformer bushing design.

To sum up, the current comparator holding device of the present invention can keep the current comparator unit and the conductor from contacting when the current comparator unit and the transformer are vibrating during operation, thereby avoiding short circuit caused by the contact between the current comparator unit and the conductor.

In addition, the use of insulating spacers and their locking screws can facilitate changing the above-mentioned creeping distance, thereby adapting to the high and low voltage differences between various current comparator units and conductors, and effectively avoiding such voltage conduction failure problems. Furthermore, the various locking structures used in this invention can also facilitate the assembly of the current comparator holding device and the current comparator unit in the limited space within the transformer.

In addition, the current comparator installation module that accommodates a part of the current comparator unit not only exerts the function of holding the current comparator, but also has the effect of reducing space, weight, and heat dissipation of the current comparator unit.

As for the transformer of this invention, this invention can facilitate the installation of the current comparator holding device and the current comparator unit in the limited space between the transformer core body and the outer shell. This eliminates the need to increase the housing size and/or use costly special transformer bushings.

The above are only examples to illustrate the preferred implementation of this invention, and are not intended to limit the scope of implementation. All simple substitutions and equivalent changes made based on the patent scope of this invention and the content of the patent specification are all patents of this invention. Application scope.

1: Flow comparator holding device

10: Flow comparator installation module

101: First flow comparator installation piece

102:Second flow comparator installation piece

11: Connectors

12:First conductor limiter

13: Insulation spacer

14:Second conductor limiter

15:First lock firmware

16:Second lock firmware

2:Flow comparator unit

3:Conductor

Claims (10)

A flow comparator holding device, including: a flow comparator installation module, the flow comparator installation module is provided with a flow comparator unit installed inside, and the flow comparator installation module has a flow comparator installation module that runs through the flow comparator installation module. A first through-portion between two opposite sides of the set, the position of the first through-portion projected into the inside of the flow comparator installation module corresponds to the range of a sensing hole of the flow comparator unit; a connector, the One of the two opposite sides of the connecting piece is provided on one of the opposite sides of the flow regulator installation module. The connecting piece is provided with a second through portion, and the second through portion is connected to the first through portion; The first conductor limiter is provided with a first limit through hole. The first limit through hole is connected to two opposite sides of the first conductor limiter. The first conductor limiter is provided on one side of the opposite sides. on the other side of the opposite sides of the connecting member; a plurality of insulating spacers, one of the plurality of insulating spacers on the opposite sides is disposed on the other side of the opposite sides of the flow comparator installation module; and a The second conductor limiter is disposed on the other side of the opposite sides of each insulating spacer. The second conductor limiter is provided with a second limiter through hole, and the second limiter through hole is connected to the second limiter. Opposite sides of the conductor limiter; wherein, the current comparator holding device has a conductor passing through the first limit through hole, the second through portion, the first through portion, the sensing hole and the second limit In the position of the through hole, the first limiting through hole and the second limiting through hole limit the position of the conductor to be separated from the inner edge of the sensing hole by a distance. The flow comparator holding device as claimed in claim 1, wherein the flow comparator installation module includes: A first flow comparator mounting part includes a first groove and a first through hole, the first groove is provided on one of the two opposite sides of the first flow comparator mounting part facing the flow comparator unit. On the side, the first groove is provided for installing a part of the flow comparator unit, the first through hole is provided at a position of the first flow comparator mounting member relative to the sensing hole, and is connected to the first groove; and a second ratio The flow comparator mounting part includes a second groove and a second through hole. The second groove is provided on the other side of the second flow comparator mounting part facing the opposite sides of the flow comparator unit. Two grooves are provided for installing another part of the flow comparator unit. There is a gap between the second flow comparator mounting part and the first flow comparator mounting part. The second through hole is provided on the second flow comparator mounting part. The position of the component relative to the sensing hole is connected to the second groove. The current comparator holding device according to claim 2 further includes a plurality of first locking parts, the connecting part is provided with a plurality of first mounting holes on the periphery of the corresponding first groove, and the first conductor limiting part is A first locking hole is respectively provided at the position of a plurality of first mounting holes, and a second locking hole is respectively provided at the position of the first flow regulator mounting member corresponding to the plurality of first mounting holes. Each of the first mounting holes is provided with a first locking hole. The fastener passes through the corresponding first locking hole, the first mounting hole and the second locking hole, and connects the first conductor limiting member and the first current comparator mounting member together. The connection The component is connected between the first conductor limiting component and the first current comparator mounting component. The current comparator holding device according to claim 2, wherein the connecting member is two connecting rods, the second through portion is formed between the two connecting rods, and both ends of the connecting rod extend beyond the first conductor limiting member and the first current comparator mounting piece for connecting to a bracket in a transformer. The current comparator holding device according to claim 2 further includes a plurality of second locking parts, each of the insulating spacers is further provided with a second mounting hole, and the second conductor limiting part corresponds to each of the second mounting holes. The hole is provided with a plurality of third locking holes, and the second flow regulator mounting piece corresponds to each of the third locking holes. A plurality of fourth locking holes are provided, and each second locking member passes through the third locking hole, the second mounting hole and the fourth locking hole to connect the second conductor limiting member and the fourth locking hole. The second flow comparator mounting pieces are connected together. The current comparator holding device according to claim 2 further includes a plurality of second locking parts, each of the insulating spacers is further provided with a second installation hole, and the second conductor limiting part corresponds to each of the second installation holes. The hole is provided with a plurality of third locking holes, the second flow regulator mounting piece is provided with a plurality of fourth locking holes corresponding to each of the third locking holes, and the first flow regulator mounting piece is corresponding to each of the third locking holes. The fourth locking hole is provided with a plurality of third installation holes, the connector is provided with a plurality of fourth installation holes corresponding to each third installation hole, and the first conductor limiting member is provided corresponding to each fourth installation hole. There are a plurality of fifth mounting holes, and each second fastener passes through the third locking hole, the second mounting hole, the fourth locking hole, the third mounting hole, the fourth mounting hole and the The fifth mounting hole is based on the second conductor limiting piece, the insulating spacer, the second current comparator mounting piece, the first current comparator mounting piece, the connecting piece and the first conductor limiting piece. Connect the above components in order. The current comparator holding device according to claim 5 or claim 6, wherein the plurality of second fasteners are insulating screws, and the plurality of insulating spacers are insulating nuts. A transformer includes: a casing; a transformer core disposed in the casing; the transformer core includes an iron core and a plurality of windings, the windings are wound on the iron core; and a bracket located between the casing and the transformer Between the core bodies; a transformer bushing is provided on the outside of the housing; as in the current comparator holding device described in any one of claims 1 to 6, the connecting piece is connected to the bracket; and A current comparator unit, the current comparator unit is installed in the current comparator installation module; and a conductor, the conductor is led out from the high-voltage side of the winding. The transformer according to claim 8, wherein the transformer bushing is arranged on the shell above the transformer core, and the central axis of the transformer bushing corresponds to the periphery of the transformer core, and the bracket is arranged on the transformer core. On the body, the conductor passes through the first limiting through hole, the second through portion, the first through portion, the sensing hole and the second limiting through hole, and then is introduced into the transformer bushing. The transformer according to claim 8, wherein the bracket is provided on the transformer core body, and the bracket is provided with a bearing member extending from the transformer core body toward the shell to connect with the connecting member.

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