CN211376381U

CN211376381U - Saturable reactor

Info

Publication number: CN211376381U
Application number: CN202020302979.9U
Authority: CN
Inventors: 赵环环; 刘海东; 顾建伟; 郭新; 谢旭辉
Original assignee: Jinan Xd Special Transformer Co ltd; China XD Electric Co Ltd; Xian XD Transformer Co Ltd
Current assignee: Jinan Xd Special Transformer Co ltd; China XD Electric Co Ltd; Xian XD Transformer Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-08-28
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a saturable reactor, saturable reactor includes: a housing; the coil and the iron core are arranged in the shell, and after the coil and the iron core are arranged in the shell, elastic resin is poured into the shell so that the coil and the iron core are fixed in the shell. The utility model provides an among the saturable reactor, its coil and iron core make coil and iron core fix in the casing through the mode of pouring elastic resin in to the casing, and expose with prior art well iron core and compare, probability that can greatly reduced iron core drops has guaranteed saturable reactor's safe operation, simultaneously the effectual vibration and the noise that have reduced iron core. In addition, the elastic resin has elasticity, and the elastic resin can play a role in buffering when being in contact with the iron core and the coil.

Description

Saturable reactor

Technical Field

The utility model relates to an electric power tech field, more specifically say, relate to a saturable reactor.

Background

In recent years, along with the construction of a plurality of ultrahigh voltage direct current transmission lines in China, the ultrahigh voltage direct current transmission technology is rapidly developed, and the ultrahigh voltage direct current transmission technology has more obvious advantages than the alternating current transmission technology, especially has more prominent economic and technical aspects. In the economic aspect: the extra-high voltage direct current transmission cost is low, and the annual electric energy loss is small; the technical aspect is as follows: the system operates stably, non-synchronous interconnection of the power grid can be realized, and short-circuit current can be limited rapidly.

The saturable reactor is used as a key through-flow device of the extra-high voltage converter valve, and the quality problem of the saturable reactor is directly related to the safe operation of the whole converter valve. The saturable reactor for the extra-high voltage direct current converter valve has the functions of inhibiting the current change rate flowing through the thyristor, limiting the sudden change of the current of the thyristor and improving the uniformity of the distributed voltage of the thyristor converter valve.

The existing ultrahigh voltage direct current transmission line at home and abroad has been put into operation for many years, and is used as the heart of the converter valve in the operation for dozens of years, and whether the operation safety of the saturable reactor is directly related to the safety of all equipment in a hall of the converter valve. At present, the problem that an iron core of a saturable reactor in some extra-high voltage engineering often falls off is solved, and in addition, the saturable reactor in the prior art has poor heat dissipation effect, a waterway system is complicated and water leakage of the waterway system often occurs.

In summary, how to effectively reduce the probability of the iron core of the saturable reactor falling off is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a saturable reactor, which has a structural design capable of effectively reducing the probability of the iron core of the saturable reactor falling off.

In order to achieve the above object, the utility model provides a following technical scheme:

a saturable reactor, comprising:

a housing;

the coil and the iron core are arranged in the shell, and after the coil and the iron core are arranged in the shell, elastic resin is poured into the shell so that the coil and the iron core are fixed in the shell.

Preferably, in the saturable reactor, the number of the coils is one, and an axis of the coil extends in an elliptical shape in the case.

Preferably, in the saturable reactor, the cable wound into the coil includes a metal tube and an insulating layer coated outside the metal tube, and the metal tube is used for cooling water to flow through.

Preferably, in the saturable reactor, both ends of the coil extend to the outside of the case and are connected with water pipe joints.

Preferably, in the saturable reactor, the number of the iron cores is multiple, a groove is defined between two ends of the iron core, and the coil is nested in the groove of the iron core.

Preferably, in the saturable reactor, a plurality of mounting lugs are provided on an outer portion of the case.

Preferably, in the saturable reactor, a flame-retardant sponge cushion block is arranged between the iron core and the coil, the iron core and the flame-retardant sponge cushion block are arranged in the shell and then elastic resin is poured into the shell.

Preferably, the saturable reactor further includes an equipotential bolt seat provided in the case and an equipotential line electrically connected to the equipotential bolt seat, the equipotential bolt seat being electrically connected to the coil, the equipotential line being electrically connected to each of the plurality of cores.

Preferably, in the saturable reactor, two connecting arm terminals are provided outside the case, and the connecting arm terminals are Z-shaped.

The utility model provides a saturable reactor includes casing, coil and unshakable in one's determination, and wherein coil and unshakable in one's determination set up inside the casing. And after the coil and the iron core are arranged in the shell, elastic resin is poured into the shell so that the coil and the iron core are fixed in the shell. Specifically, the coil and the core may be fixed in the housing or the coil and the core may be placed in the housing and then an elastic resin may be poured into the housing, and finally the coil and the core may be fixed in the housing.

According to the above, the utility model provides an among the saturable reactor, its coil and iron core make coil and iron core fix in the casing through the mode of pouring elastic resin in to the casing, and expose with prior art well iron core and compare, probability that can greatly reduced iron core drops has guaranteed saturable reactor's safe operation, simultaneously the effectual vibration and the noise that have reduced iron core. In addition, the elastic resin has elasticity, and the elastic resin can play a role in buffering when being in contact with the iron core and the coil.

Drawings

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

Fig. 1 is a top view of a saturable reactor housing according to an embodiment of the present invention;

fig. 2 is a side view of a saturable reactor provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a saturable reactor provided by an embodiment of the present invention.

In fig. 1-3:

the flame-retardant steel wire rope comprises a shell 1, a mounting lug 1a, an iron core 2, a flame-retardant sponge cushion block 3, a coil 4, a water pipe joint 5, a bridge arm connecting terminal 6, an equipotential line 7 and an equipotential bolt seat 8.

Detailed Description

An object of the utility model is to provide a saturable reactor, this saturable reactor's structural design can reduce the probability that saturable reactor's iron core drops effectively.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated position or element must have a specific orientation, be constituted in a specific orientation, and be operated, and thus, are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-3, the saturable reactor provided by the present invention includes a case 1, a coil 4 and an iron core 2, wherein the coil 4 and the iron core 2 are disposed inside the case 1. After the coil 4 and the core 2 are arranged in the housing 1, an elastic resin is poured into the housing 1 to fix the coil 4 and the core 2 in the housing 1. Specifically, the coil 4 and the core 2 may be fixed in the housing 1, or the coil 4 and the core 2 may be placed in the housing 1, and then an elastic resin may be poured into the housing 1, so that the coil 4 and the core 2 are finally fixed in the housing 1.

According to the above, the utility model provides an among the saturable reactor, its

coil

4 and 2 unshakable in one's determination make

coil

4 and 2 unshakable in one's determination fix in casing 1 through the mode of pouring elastic resin in to casing 1, and with prior art in unshakable in one's determination 2 expose compare, probability that can greatly reduced 2 drops unshakable in one's determination has guaranteed saturable reactor's safe operation, the effectual vibration and the noise that has unshakable in one's determination 2 that has reduced simultaneously. In addition, the elastic resin has elasticity, and the elastic resin can play a role of buffering in contact with the core 2 and the coil 4.

The housing 1 may be a flame retardant housing to ensure safety.

In a particular embodiment, the number of coils 4 is one, and the axis of the coil 4 extends in an elliptical shape within the housing 1. With this arrangement, the saturable reactor structure is simplified, and one coil 4 can be fitted with a plurality of cores 2. Accordingly, the housing 1 has an elliptical cylindrical structure.

Of course, the axis of the coil 4 may extend in other shapes within the housing 1, and is not limited thereto.

Further, the cable wound into the coil 4 includes a metal tube and an insulating layer coated outside the metal tube, and the metal tube is used for cooling water circulation. With this arrangement, the coil 4 is fitted to the core 2, and the heat of the coil 4 and the core 2 can be carried by the cooling water flowing through the inside of the cable of the coil 4. In the embodiment, the number of the coils 4 is only one, namely, only one cooling water channel is arranged, so that compared with a multi-channel water system in the prior art, the connection of the water channel system is simplified, the water leakage condition of the saturable reactor in the running process is avoided, the safety performance of the saturable reactor is further improved, and the running stability of the converter valve system is ensured. Here, it should be noted that the cooling water in the metal tube is pure water and is not conductive.

In the above embodiment, in order to facilitate water inlet and outlet, the two ends of the coil 4 extend to the outside of the housing 1, and the two ends of the coil 4 are both connected with the water pipe connectors 5. The water pipe joint 5 is communicated with the interior of the metal pipe of the cable wound into the coil 4 so as to realize water inlet and outlet of the metal pipe of the cable wound into the coil 4. The metal tube of the cable may be an aluminum tube, which is not limited herein. The water pipe joint 5 may be an inner threaded structure, which is not limited herein.

Preferably, the number of the iron cores 2 is multiple, a groove is defined between two ends of the iron core 2, and the coil 4 is nested in the groove of the iron core 2. The iron core 2 can be C-shaped, U-shaped and the like, and the coil 4 penetrates through a groove enclosed between two ends of the iron core 2. Of course, the core 2 may have other structures, and is not limited herein. Specifically, the groove notches of the two iron cores 2 can be opposite to form an iron core group, the iron core group is of an oval butt joint structure, and the coil 4 penetrates through a through hole formed by the two iron cores 2.

In another embodiment, a plurality of mounting ears 1a are disposed outside the housing 1, and mounting through holes are opened on the mounting ears 1 a. Specifically, the number of the mounting ears 1a may be four, and the four mounting ears 1a are located at four corners of the housing 1, respectively. So can install this saturable reactor and other part adaptations of current electric wire netting, utilize the mounting hole on the installation ear 1a simultaneously, compare with the installation that utilizes mounting plate among the prior art, greatly increased saturable reactor's heat radiating area, alleviateed saturable reactor mounting platform's bearing, improved the security of saturable reactor installation.

In order to further improve the buffering performance between the iron core 2 and the coil 4, a flame-retardant sponge cushion block 3 may be disposed between the iron core 2 and the coil 4, the iron core 2 and the flame-retardant sponge cushion block 3 are disposed behind the housing 1, and then elastic resin is poured into the housing 1, so that the coil 4, the iron core 2 and the flame-retardant sponge cushion block 3 are fixed in the housing 1. A flame-retardant sponge cushion block 3 can be arranged between the iron core 2 and the iron core 2. The flame-retardant sponge cushion block 3 may have an angular structure.

In addition, in order to ensure the equipotential of the iron core 2 and the coil 4, the saturable reactor further comprises an equipotential bolt seat 8 arranged in the casing 1 and an equipotential line 7 electrically connected with the equipotential bolt seat 8, wherein the equipotential bolt seat 8 is electrically connected with the coil 4, and the equipotential line 7 is electrically connected with the plurality of iron cores 2. Specifically, the equipotential bolt seat 8 and the coil 4 may be welded to be electrically connected, and the equipotential line 7 and the plurality of cores 2 may also be welded to be electrically connected. After the coil 4, the iron core 2, the flame-retardant sponge rubber cushion block, the equipotential line 7 and the equipotential bolt seat 8 are all installed in the shell 1, vacuum integral casting can be performed through elastic resin.

The equipotential lines 7 may be of an aluminum strip structure, and the equipotential bolt seats 8 may be of a cylindrical structure, which is not limited herein.

Of course, the core 2 and the coil 4 may also be equipotential by other means, and are not limited herein.

In the above embodiment, the outer wall of the saturable reactor case 1 may further be provided with two connection arm terminals 6, and the connection arm terminals 6 are Z-shaped. Two connecting arm terminals 6 are electrically connected to both ends of the coil 4, respectively. The two connecting bridge arm terminals 6 are fixed on the outer wall of the shell 1, and the two connecting bridge arm terminals 6 can be clamped, welded or bolted on the outer wall of the shell 1.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A saturable reactor, characterized by comprising:

a housing (1);

the coil (4) and the iron core (2) are arranged in the shell (1), and after the coil (4) and the iron core (2) are arranged in the shell (1), elastic resin is poured into the shell (1) so that the coil (4) and the iron core (2) are fixed in the shell (1).

2. A saturable reactor according to claim 1, characterized in that the number of the coil (4) is one, and the axis of the coil (4) extends in an elliptical shape within the case (1).

3. A saturable reactor according to claim 2, characterized in that the cable wound into the coil (4) comprises a metal tube for circulation of cooling water and an insulating layer coated outside the metal tube.

4. A saturable reactor according to claim 3, characterized in that both ends of the coil (4) extend to the outside of the case (1) and are connected with water pipe joints (5).

5. A saturable reactor according to claim 2, characterized in that the number of the iron core (2) is multiple, the two ends of the iron core (2) enclose a groove therebetween, and the coil (4) is nested in the groove of the iron core (2).

6. A saturable reactor according to claim 1, characterized in that the exterior of the case (1) is provided with a plurality of mounting ears (1 a).

7. A saturable reactor according to claim 1, characterized in that a flame retardant sponge cushion block (3) is provided between the core (2) and the coil (4), the core (2) and the flame retardant sponge cushion block (3) are provided behind the case (1) and an elastic resin is poured into the case (1).

8. A saturable reactor according to claim 1, characterized by further comprising an equipotential bolt seat (8) provided in the case (1) and an equipotential line (7) electrically connected to the equipotential bolt seat (8), the equipotential bolt seat (8) being electrically connected to the coil (4), the equipotential line (7) being electrically connected to each of the plurality of cores (2).

9. A saturable reactor according to claim 1, characterized in that two connecting leg terminals (6) are provided on the outside of the case (1), and the connecting leg terminals (6) are Z-shaped.