CN213815800U

CN213815800U - Novel mounting structure of current transformer primary lead wire

Info

Publication number: CN213815800U
Application number: CN202023057181.1U
Authority: CN
Inventors: 陈晨
Original assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Current assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-27
Anticipated expiration: 2030-12-17

Abstract

The utility model relates to a generator manufacturing technology field especially relates to a novel mounting structure of current transformer one-time lead wire, including cooling device and trapping mechanism, contain the cooling box among the cooling device, be equipped with the round steel of bent type in the cooling box, its purpose is in order to increase creepage distance, the cooling box is used for filling insulating medium, prevent on the one hand to lead electrically through the medium between the round steel, on the other hand is the lowering temperature, makes this device steady operation under the ideal temperature for a long time, trapping mechanism's epoxy glass stringing both sides all are equipped with the nut, front end one side still is equipped with the locking gasket, can prevent effectively like this that the vibration that produces when the unit moves forces trapping mechanism not hard up, so the utility model has the advantages of constant temperature, the outward appearance is succinct, and the dead weight is light, creepage distance is long, and it is not hard up to reduce the fastener.

Description

Novel mounting structure of current transformer primary lead wire

Technical Field

The utility model belongs to the technical field of the generator is made, especially, relate to a novel mounting structure of a current transformer lead wire.

Background

Neutral point current transformers are known for measuring and protecting the operation of generators. The number of secondary windings depends on the requirements of the measuring instrument, the protective device and the automation component. The measuring instrument and the protection device are respectively connected with different secondary windings. Most users require manufacturers to provide current transformers on the outgoing line of the neutral point of the generator, each set comprises a plurality of current transformers, and each iron core requires more than two secondary windings. When the current transformer adopts a feed-through structure, the primary lead needs to pass through the center of the transformer and is in short circuit through a copper bar. The mutual inductor is arranged in a generator cabin, a primary lead of the mutual inductor is inevitably stressed to generate vibration in the running process of a generator set, the accuracy of a measuring instrument and a protection device is influenced, and therefore wire clamps are required to be arranged at the upper end and the lower end of the primary lead respectively for fastening. The unreasonable department of original neutral point lead wire clamp structural design lies in: the sizing block is too long and has a heavy structure; the creepage distance between the steel plate and the outgoing line copper bar is small, and hidden troubles exist in the safe operation of the unit due to the temperature fluctuation.

Therefore, a new installation structure of a primary lead wire of a current transformer is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a novel mounting structure for a primary lead of a current transformer, which comprises a cooling device and a wire clamping device. The utility model has the advantages of the dress card is convenient, and the outward appearance is exquisite, reduces the processing cost, reduces the dead weight, has increased creepage distance, keeps invariable temperature to be favorable to unit safety and stability to move.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the utility model provides a novel mounting structure of current transformer one-time lead wire, includes cooling device and trapping mechanism, and cooling device fixes in trapping mechanism one end, and cooling device includes cooling box and bent type round steel, and bent type round steel is fixed on the inside rubber bracket of cooling box, and bent type round steel head is equipped with the screw thread, trapping mechanism includes epoxy glass stringing and fastener, and epoxy glass stringing passes through screw thread and nut A threaded connection with the head of bent type round steel.

Furthermore, a nut A and a nut B are arranged on two sides of the epoxy glass cloth tube, a wire clamp is sleeved in the epoxy glass cloth tube, and a stop gasket is arranged between the nut A and the epoxy glass cloth tube.

Furthermore, a cock is arranged at the upper end of the cooling box, the cooling box is fixedly connected with the reinforcing rib in a welding mode, and the other side of the reinforcing rib is fixedly connected with the connecting plate in a welding mode.

Furthermore, one end of the curved round steel is sleeved with a wire clamp which is arranged at the joint of the epoxy glass cloth pipe and the curved round steel and is fixed in the epoxy glass cloth pipe through a nut A and a nut B on two sides of the epoxy glass cloth pipe.

Further, a through hole is formed in one end of the cooling box, two ends of the curved round steel respectively penetrate through the through hole and extend out of the cooling box, and the curved round steel is fixedly connected with the cooling box through a nut B.

Furthermore, the curved round steel is sleeved with a rubber ring, and the rubber ring is positioned inside the through hole.

The utility model has the advantages that: the utility model provides a novel mounting structure of current transformer one-time lead wire contains cooling device and trapping mechanism, cooling device contains the cooling box, be equipped with curved round steel in the cooling box, its purpose is in order to increase creepage distance, the cooling box is used for filling insulating medium, prevent on the one hand to lead to through the medium between the round steel electrically, on the other hand is the lowering temperature, make this device steady operation under the ideal temperature for a long time, trapping mechanism's epoxy glass stringing both sides all are equipped with the nut, front end one side still is equipped with the locking gasket, the vibration that can effectively prevent the unit operation production like this makes the trapping mechanism not hard up, so the utility model has the advantages of simple to operate, the outward appearance is succinct, and the reduction cost alleviates equipment dead weight, keeps the constant temperature, creepage distance increases, makes unit steady operation.

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

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a partial cross-sectional view of the internal structure of the present invention;

wherein:

1. a cooling device; 2. A cooling box; 3. A cock;

4. reinforcing ribs; 5. A connecting plate; 6. A thread;

7. curved round steel; 8. An insulating cooling medium; 9. A nut A;

10. a nut B; 11. Epoxy glass cloth tubes; 12. A wire clamping device;

13. a stopper spacer; 14. Wire clamps; 15. A rubber ring;

16. a rubber bracket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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 should be noted that unless otherwise explicitly specified or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

FIG. 1 is a schematic view of a three-dimensional structure of the present invention, FIG. 2 is a schematic view of an internal structure of the present invention, such as the novel mounting structure of a primary lead wire of a current transformer shown in FIGS. 1 and 2, which comprises a cooling device 1 and a wire clamping device 12, wherein the cooling device 1 is provided with a cooling box 2, the cooling box 2 is manufactured by welding, and needs to ensure the sealing property, a hole is formed on the upper surface of the cooling box 2, and is provided with a cock 3, the cock 3 is provided with a sealing gasket, before the welding sealing of the cooling box 2, a curved round steel 7 needs to be firstly arranged in the cooling box 2, one end with a thread 6 faces outwards, a rubber ring 15 is arranged at the contact position of the curved round steel 7 and the cooling box 2, the curved round steel 7 is arranged on a rubber support 16 inside the cooling box 2 for fixing, then the cooling box 2 is welded and sealed, a connecting plate 5 is welded at the tail end of the cooling box 2, and a reinforcing rib 4 is arranged between the connecting plate 5 and the cooling box 2, after welding is finished, air is blown at the cock 3 to detect tightness, a nut B10 is firstly installed at the position of a thread 6 of a curved round steel 7, then an epoxy glass cloth tube 11 is sleeved, a wire clamp 14 is inserted, then a stop gasket 13 is sleeved, and finally a nut A9 is screwed on, the nut A9 on one side of the epoxy glass cloth tube 11 is provided with the stop gasket 13 to prevent the nut A9 from loosening, and the nut B10 is arranged on the other side of the epoxy glass cloth tube 11 to form bidirectional knob force, so that loosening is further prevented. The device is then welded to the unit by means of the connection plate 5.

The working mode is as follows: the utility model provides a novel mounting structure of a current transformer primary lead wire, which comprises a cooling device 1 and a wire clamping device 12, wherein the cooling device 1 is provided with a cooling box 2, the cooling box 2 is manufactured by welding and needs to ensure the tightness, the upper surface of the cooling box 2 is provided with a hole, a cock 3 is arranged, the cock 3 is provided with a sealing washer, before the welding and the sealing of the cooling box 2, a curved round steel 7 needs to be firstly arranged in the cooling box 2, one end of a thread 6 faces outwards, a rubber ring 15 is arranged at the contact position of the curved round steel 7 and the cooling box 2, the turning part of the curved round steel 7 is arranged on a rubber support 16 inside the cooling box 2 for fixing, then the cooling box 2 is welded and sealed, a connecting plate 5 is welded at the tail end of the cooling box 2, a reinforcing rib 4 is arranged between the connecting plate 5 and the cooling box 2, after the welding, the tightness is detected by blowing at the cock 3, at the thread 6 part of the curved round steel 7, the nut B10 is firstly installed, then the epoxy glass cloth tube 11 is sleeved, the wire clamp 14 is inserted, then the stop gasket 13 is sleeved, and finally the nut A9 is screwed, the nut A9 on one side of the epoxy glass cloth tube 11 is provided with the stop gasket 13 to prevent the nut A9 from loosening, and the nut B10 on the other side of the epoxy glass cloth tube 11 is provided with the nut B10 to form bidirectional knob force, so that loosening is further prevented. The device is then welded to the unit by means of the connection plate 5. The utility model discloses increased creepage distance, the cooling box is used for filling insulating cooling medium, prevents on the one hand that it is electrically conductive through the medium between the round steel, and on the other hand is the lowering temperature, makes this device steady operation under the ideal temperature for a long time, and the epoxy glass stringing both sides of trapping mechanism all are equipped with the nut, and front end one side still is equipped with the locking gasket, and the vibration that produces when can effectively preventing the unit operation like this makes fastener device not hard up, so the utility model has the advantages of simple to operate, the outward appearance is succinct, but constant temperature reduces the product dead weight, and the reduction is not hard up, increases creepage distance.

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

Claims

1. The utility model provides a novel mounting structure of a current transformer lead wire, includes cooling device (1) and trapping mechanism (12), and cooling device (1) is fixed in trapping mechanism (12) one end, its characterized in that: cooling device (1) is including cooling box (2) and bent type round steel (7), and bent type round steel (7) are fixed on rubber bracket (16) of cooling box (2) inside, and bent type round steel (7) head is equipped with screw thread (6), press from both sides traditional thread binding putting (12) and pass through screw thread (6) and nut A (9) threaded connection including epoxy glass stringing (11) and fastener (14), epoxy glass stringing (11) and the head of bent type round steel (7).

2. The novel mounting structure of the primary lead of the current transformer according to claim 1, characterized in that: the two sides of the epoxy glass cloth tube (11) are provided with a nut A (9) and a nut B (10), a wire clamp (14) is sleeved in the epoxy glass cloth tube, and a stop gasket (13) is arranged between the nut A (9) and the epoxy glass cloth tube (11).

3. The novel mounting structure of the primary lead of the current transformer according to claim 1, characterized in that: the upper end of the cooling box (2) is provided with a cock (3), the cooling box (2) is fixedly connected with the reinforcing rib (4) in a welding mode, and the other side of the reinforcing rib (4) is fixedly connected with the connecting plate (5) in a welding mode.

4. The novel mounting structure of the primary lead of the current transformer according to claim 2, characterized in that: one end of the curved round steel (7) is sleeved with a wire clamp (14), the wire clamp (14) is arranged at the joint of the epoxy glass cloth pipe (11) and the curved round steel (7), and the epoxy glass cloth pipe (11) is fixed in the epoxy glass cloth pipe (11) through a nut A (9) and a nut B (10) on two sides of the epoxy glass cloth pipe (11).

5. The novel mounting structure of the primary lead of the current transformer according to claim 1, characterized in that: the through-hole has been seted up to the one end of cooling box (2), and the both ends of bent type round steel (7) run through the through-hole respectively and stretch out outside the cooling box, and nut B (10) fixed connection is passed through with cooling box (2) to bent type round steel (7).

6. The novel mounting structure of the primary lead of the current transformer according to claim 5, characterized in that: the curved round steel (7) is sleeved with a rubber ring (15), and the rubber ring (15) is located inside the through hole.