CN212010705U

CN212010705U - Current transformer with good safety

Info

Publication number: CN212010705U
Application number: CN202020475738.4U
Authority: CN
Inventors: 毕风雷
Original assignee: Suzhou Jingyi Switch Co ltd
Current assignee: Suzhou Jingyi Switch Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-11-24
Anticipated expiration: 2030-04-03

Abstract

The utility model discloses a good current transformer of security relates to current transformer technical field, does not have any isolation structure for solving between two binding post of current transformer on the market at present, causes current transformer's short circuit easily, greatly reduced the problem of the security when current transformer uses. The winding is installed to the inside one side of mutual-inductor shell, the first binding post of lower extreme fixedly connected with of first pigtail, the lower extreme fixedly connected with second binding post of second pigtail, the avris fixedly connected with temperature sensor of the inside lower extreme of mutual-inductor shell, the internally mounted of installation fixture block has the spacing block, the inside opposite side fixedly connected with cooling tube of mutual-inductor shell, the positive one side fixedly connected with blowing case of mutual-inductor shell, the positive opposite side fixedly connected with controlling means of mutual-inductor shell, protective housing is installed in the outside of installation plate.

Description

Current transformer with good safety

Technical Field

The utility model relates to a current transformer technical field specifically is a good current transformer of security.

Background

The current transformer is an instrument for converting a large primary side current into a small secondary side current according to the electromagnetic induction principle to measure, and consists of a closed iron core and a winding, wherein the number of turns of the primary winding of the current transformer is small, and the primary winding is connected in series in a circuit of the current to be measured, so that all the current of the circuit always flows through the current transformer, the number of turns of the secondary winding is large, the secondary winding is connected in series in a measuring instrument and a protection loop, and when the current transformer works, the secondary loop of the current transformer is always closed, so that the impedance of the series coil of the measuring instrument and the protection loop is small.

At present, no isolation structure is arranged between two wiring terminals of the current transformer on the market, the short circuit of the current transformer is easily caused, the safety of the current transformer during use is greatly reduced, and therefore the problem is solved by a rotor dismounting device for an open mill in urgent need in the market.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a good current transformer of security to there is not any isolation structure between two binding post of current transformer on the market at present in solving above-mentioned background art, causes current transformer's short circuit easily, greatly reduced the problem of the security when current transformer uses.

In order to achieve the above object, the utility model provides a following technical scheme: a current transformer with good safety comprises a transformer shell, wherein a winding is installed on one side inside the transformer shell, a first leading-out head is arranged on one side of the winding, a first connecting terminal is fixedly connected to the lower end of the first leading-out head, a second leading-out head is arranged on the other end of the winding, a second connecting terminal is fixedly connected to the lower end of the second leading-out head, one ends of the first connecting terminal and the second connecting terminal extend to the outer side of the transformer shell, a temperature sensor is fixedly connected to the side of the lower end inside the transformer shell, an installation clamping block is fixedly connected to the lower end inside the transformer shell, an isolation block is installed inside the installation clamping block, a cooling pipe is fixedly connected to the other side inside the transformer shell, a blowing box is fixedly connected to one side of the front side of the transformer shell, and one end of a connecting, the other end of connecting pipe and the one end of cooling tube switch-on each other, the other end of cooling tube extends to the outside of mutual-inductor shell, the positive opposite side fixedly connected with controlling means of mutual-inductor shell, the upper end fixedly connected with mount table of mutual-inductor shell, the data plate is installed to the upper end of mount table, mount table and data plate pass through the mutual locking of fixed screw, the lower extreme fixedly connected with installation plate of mutual-inductor shell, protecting sheathing is installed in the outside of installation plate, the installation plate all is provided with fixed counter bore with protecting sheathing's inside.

Preferably, the temperature sensor is electrically connected with the control device, and the model of the temperature sensor is DS18B 20.

Preferably, the mounting fixture block is connected with the isolation block in a clamping manner, and the isolation block is a ceramic block.

Preferably, the cooling pipe is designed in a spiral structure, and the cooling pipe is a heat conduction pipe.

Preferably, the outer side of the blowing box is fixedly connected with a micro motor, the micro motor is electrically connected with the control device, the inner side of the blowing box is rotatably connected with a connecting shaft, the surface of the connecting shaft is symmetrically and fixedly connected with four fan blades, and one end of the connecting shaft is rotatably connected with the transmission end of the micro motor.

Preferably, the protective housing includes first shell, second shell, installation slot and connection fixture block, the second shell is installed to the one end of first shell, one side that first shell is close to the second shell is provided with installation slot, the one end fixedly connected with connection fixture block that the second shell is close to first shell, connection fixture block is connected with the installation slot block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this current transformer that security is good through the setting of installation fixture block and spacing block, can keep apart two binding post, prevents that two terminal contacts from causing current transformer's short circuit, security when ensureing current transformer to use, and the spacing block adopts the ceramic block simultaneously, has guaranteed the isolation effect greatly, has solved and has not any isolation structure between two binding post of current transformer on the market at present, causes current transformer's short circuit easily, greatly reduced the problem of the security when current transformer uses.

2. This current transformer that security is good through temperature sensor, blowing case, cooling tube, connecting pipe, blowing case, connecting pipe, micro motor, connecting axle, flabellum and controlling means's setting, can be to the automatic effluvium of the temperature of the inside production of current transformer, avoids the damage that the inside high temperature of current transformer caused, and through protecting sheathing's setting, the quilt that prevents to install the plate is corroded simultaneously, has improved current transformer's life greatly.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

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

FIG. 3 is a schematic view of the back structure of the present invention;

fig. 4 is a schematic top view of the present invention;

FIG. 5 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 6 is a schematic view of the cooling tube structure of the present invention.

In the figure: 1. a transformer housing; 2. a winding; 3. a first lead-out head; 4. a first connection terminal; 5. a second leading-out head; 6. a second connection terminal; 7. a temperature sensor; 8. mounting a clamping block; 9. an isolation block; 10. a cooling tube; 11. a blow box; 12. a connecting pipe; 13. an installation table; 14. a nameplate; 15. fixing screws; 16. a control device; 17. installing a plate block; 18. a protective housing; 19. fixing the counter bore; 111. a micro motor; 112. a connecting shaft; 113. a fan blade; 181. a first housing; 182. a second housing; 183. installing a clamping groove; 184. and connecting the clamping blocks.

Detailed Description

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.

Referring to fig. 1-6, the present invention provides an embodiment: a current transformer with good safety comprises a transformer shell 1, wherein a winding 2 is installed on one side inside the transformer shell 1, a first leading-out head 3 is arranged on one side of the winding 2, a first wiring terminal 4 is fixedly connected to the lower end of the first leading-out head 3, a second leading-out head 5 is arranged at the other end of the winding 2, a second wiring terminal 6 is fixedly connected to the lower end of the second leading-out head 5, one ends of the first wiring terminal 4 and the second wiring terminal 6 extend to the outer side of the transformer shell 1, a temperature sensor 7 is fixedly connected to the side of the lower end inside the transformer shell 1, a mounting fixture block 8 is fixedly connected to the lower end inside the transformer shell 1, an isolation block 9 is installed inside the mounting fixture block 8, a cooling pipe 10 is fixedly connected to the other side inside the transformer shell 1, a blowing box 11 is fixedly connected to one side of the front side of the, the other end of connecting pipe 12 and the one end of cooling tube 10 are put through each other, the other end of cooling tube 10 extends to the outside of mutual-inductor shell 1, positive opposite side fixedly connected with controlling means 16 of mutual-inductor shell 1, the upper end fixedly connected with mount table 13 of mutual-inductor shell 1, data plate 14 is installed to the upper end of mount table 13, mount table 13 and data plate 14 are locked each other through fixed screw 15, the lower extreme fixedly connected with installation plate 17 of mutual-inductor shell 1, protecting sheathing 18 is installed in the outside of installation plate 17, the inside of installation plate 17 and protecting sheathing 18 all is provided with fixed counter bore 19.

Further, the temperature sensor 7 is electrically connected with the control device 16, and the model of the temperature sensor 7 is DS18B20, so as to monitor the internal temperature of the current transformer.

Further, installation fixture block 8 is connected with 9 block connections of spacing block, and spacing block 9 adopts the ceramic block, and the installation of the spacing block 9 of being convenient for keeps apart first binding post 4 and second binding post 6 each other simultaneously, prevents that first binding post 4 and second binding post 6 contact from taking place the short circuit, has improved the security when mutual-inductor uses greatly.

Further, the cooling pipe 10 is designed to have a spiral structure, and the cooling pipe 10 is a heat conducting pipe, so that heat in the transformer shell 1 is conducted out.

Further, the outer side of the blowing box 11 is fixedly connected with a micro motor 111, the micro motor 111 is electrically connected with the control device 16, the inner side of the blowing box 11 is rotatably connected with a connecting shaft 112, the surface of the connecting shaft 112 is symmetrically and fixedly connected with four fan blades 113, one end of the connecting shaft 112 is rotatably connected with a transmission end of the micro motor 111, and heat dissipation of the mutual inductor is achieved.

Further, protective housing 18 includes first shell 181, second shell 182, installation draw-in groove 183 and is connected fixture block 184, and second shell 182 is installed to the one end of first shell 181, and one side that first shell 181 is close to second shell 182 is provided with installation draw-in groove 183, and second shell 182 is close to the one end fixedly connected with of first shell 181 and connects fixture block 184, connects fixture block 184 and installation draw-in groove 183 block connection, realizes the protection to installation plate 17.

The working principle is as follows: when the temperature-sensing type cooling tube is used, the first shell 181 and the second shell 182 are clamped on the outer side of the mounting plate 17, the connecting clamping block 184 and the mounting clamping groove 183 are clamped and mounted, the protective shell 18 and the mounting plate 17 are mounted mutually, the current transformer is mounted at a specified position through the fixing counter bore 19, the connecting wire is correspondingly connected with a conducting wire on the current transformer, when the current transformer works, the isolating block 9 separates the first wiring terminal 4 from the second wiring terminal 6, short circuit caused by mutual contact of the first wiring terminal 4 and the second wiring terminal 6 is avoided, safety in the use process is realized, when the temperature inside the transformer shell 1 is overhigh, the temperature sensor 7 transmits a signal to the control device 16, the control device 16 enables the micro motor 111 to act, the micro motor 111 drives the fan blades 113 on the surface of the connecting shaft 112 to rotate, and air in the cooling tube 10 flows, the cooling pipe 10 guides out the heat inside the transformer shell 1 through flowing air, so that the current transformer can be quickly cooled, and the micro motor 111 stops acting after the temperature inside the transformer shell 1 is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A current transformer with good safety comprises a transformer shell (1), and is characterized in that: the transformer comprises a transformer shell (1), a winding (2) is installed on one side inside the transformer shell (1), a first leading-out head (3) is arranged on one side of the winding (2), a first wiring terminal (4) is fixedly connected to the lower end of the first leading-out head (3), a second leading-out head (5) is arranged at the other end of the winding (2), a second wiring terminal (6) is fixedly connected to the lower end of the second leading-out head (5), one ends of the first wiring terminal (4) and the second wiring terminal (6) extend to the outer side of the transformer shell (1), a temperature sensor (7) is fixedly connected to the side of the lower end inside the transformer shell (1), an installation clamping block (8) is fixedly connected to the lower end inside the transformer shell (1), an isolation block (9) is installed inside the installation clamping block (8), and a cooling pipe (10) is fixedly connected to the other side inside, the transformer comprises a transformer shell (1), wherein a blowing box (11) is fixedly connected to one side of the front surface of the transformer shell (1), one end of a connecting pipe (12) is fixedly connected to the outer side of the blowing box (11), the other end of the connecting pipe (12) is communicated with one end of a cooling pipe (10), the other end of the cooling pipe (10) extends to the outer side of the transformer shell (1), a control device (16) is fixedly connected to the other side of the front surface of the transformer shell (1), an installation table (13) is fixedly connected to the upper end of the transformer shell (1), a nameplate (14) is installed at the upper end of the installation table (13), the installation table (13) and the nameplate (14) are locked with each other through a fixing screw (15), an installation plate block (17) is fixedly connected to the lower end of the transformer shell (1), and a protection shell (18, and fixing counter bores (19) are arranged in the mounting plate block (17) and the protective shell (18).

2. A safe good current transformer according to claim 1, wherein: the temperature sensor (7) is electrically connected with the control device (16), and the model of the temperature sensor (7) is DS18B 20.

3. A safe good current transformer according to claim 1, wherein: the mounting fixture block (8) is connected with the isolation block (9) in a clamping mode, and the isolation block (9) is a ceramic block.

4. A safe good current transformer according to claim 1, wherein: the cooling pipe (10) is designed to be of a spiral structure, and the cooling pipe (10) is a heat conduction pipe.

5. A safe good current transformer according to claim 1, wherein: the outside fixedly connected with micro motor (111) of case (11) of blowing, and micro motor (111) and controlling means (16) electric connection, the inboard rotation of case (11) of blowing is connected with connecting axle (112), the surperficial symmetry fixedly connected with four flabellums (113) of connecting axle (112), the one end of connecting axle (112) is connected with the transmission end rotation of micro motor (111).

6. A safe good current transformer according to claim 1, wherein: protective housing (18) include first shell (181), second shell (182), installation draw-in groove (183) and connect fixture block (184), second shell (182) are installed to the one end of first shell (181), one side that first shell (181) is close to second shell (182) is provided with installation draw-in groove (183), one end fixedly connected with that second shell (182) is close to first shell (181) is connected fixture block (184), it is connected with installation draw-in groove (183) block to connect fixture block (184).