CN211062676U

CN211062676U - Relay protection device for transformer substation

Info

Publication number: CN211062676U
Application number: CN201922418291.7U
Authority: CN
Inventors: 艾克威
Original assignee: Inner Mongolia Tairu Electric Power Technology Co ltd
Current assignee: Inner Mongolia Tairu Electric Power Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-21
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a transformer substation uses relay protection device, through screw fixed connection between the front and back both sides of epitheca and inferior valve, the first fixed plate of right side fixedly connected with of inferior valve internal surface, and the top fixedly connected with heat-sensitive sheetmetal of first fixed plate, the utility model relates to a relay technical field this transformer substation uses relay protection device utilizes the material that heat-sensitive sheetmetal both sides thermal expansion performance is different, makes it crooked when the high temperature takes place, and then it is crooked to drive the elastic steel piece, extrudees little shell fragment simultaneously, only when little shell fragment is crooked to the limit, the elastic steel piece just can be released and with L type current conducting plate electrical contact, can utilize coil cooperation electro-magnet to produce magnetic field in the twinkling of an eye, and then adsorb the iron sheet and make the hook plate rotate and loosen the push rod, can realize just can trigger magnetic field and cut off the power supply when appointed high temperature, and not heat-sensitive sheetmetal carries out the outage gradually in crooked in-process, can avoid.

Description

Relay protection device for transformer substation

Technical Field

The utility model relates to a relay technical field specifically is a transformer substation uses relay protection device.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. It has an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop). It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like. The relay is an automatic switch element with an isolation function, is widely applied to remote control, remote measurement, relays, communication, automatic control, electromechanical integration and power electronic equipment, and is one of the most important control elements.

In the prior art, as for the relay protection device for the transformer substation disclosed in CN208656398U, by setting the bimetal with different thermal expansion, the locking buckle is pressed down when the bimetal deforms at high temperature, so that the locking hook is loosened, and then the power failure is realized.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a transformer substation uses relay protection device has solved prior art and has disclosed like CN208656398U a transformer substation uses relay protection device, appears the problem of cutting off the power supply in advance in the intensification in-process easily.

To achieve the above object, the utility model discloses a transformer substation uses relay protection device, including epitheca and inferior valve, through screw fixed connection between the front and back both sides of epitheca and inferior valve, the right side fixedly connected with first fixed plate of inferior valve internal surface, and the top fixedly connected with heat-sensitive sheetmetal of first fixed plate, the left top of heat-sensitive sheetmetal is connected with elastic steel piece through fix with rivet, and the left side fixedly connected with conductive contact piece of elastic steel piece, the right side of epitheca internal surface just is located the top of elastic steel piece and has the second fixed plate through adjusting screw threaded connection, and the left side of second fixed plate bottom rotates and is connected with little shell fragment, the left side of little shell fragment just is located the bottom fixedly connected with gag lever post of second fixed plate, the top of epitheca and the bottom of inferior valve all run through and are fixed with the connector lug, and the connector lug is located the inside one end of epitheca and inferior valve respectively fixedly connected with first conducting rod and second conducting rod, the fixed surface of first conducting rod is connected with L type current conducting plate, and the right side of L type current conducting plate is close to the left side of first elastic steel piece, the fixed surface of connecting piece is connected with the connecting piece and the top of connecting wire, the electromagnet, the top of electromagnet is connected with the top of electromagnet and the top of the fixed coil, and the electromagnet, the electromagnet are connected with the top of electromagnet between the fixed coil.

Preferably, a push rod penetrates between the left sides of the upper shell and the lower shell, and the right end of the bottom of the push rod is hooked with the left side of the top of the hook plate.

Preferably, the bottom end of the first conducting rod and the left side of the top end of the second conducting rod are fixedly connected with contact pieces, a conducting wafer is sleeved on the surface of the push rod, and the right side of the conducting wafer is in electrical contact with the surface of the contact pieces.

Preferably, the conductive wafer comprises an insulating connecting sheet, semicircular conductive sheets are fixedly connected to the upper side and the lower side of the insulating connecting sheet, the semicircular conductive sheets are electrically connected through a fuse, and a clamping groove clamped with the fuse is formed in the surfaces of the semicircular conductive sheets.

Preferably, the surface of the push rod is fixedly connected with the baffle rings on two sides of the conductive wafer, and a small spring is sleeved between the left side of the push rod, which is located on the conductive wafer, and the baffle rings.

Preferably, the left end of push rod and the outside fixedly connected with who is located epitheca and inferior valve press the cap, the surface of push rod and the left side that is located epitheca and inferior valve and press the cap between the cover to be equipped with big spring.

Preferably, the connector lug, the first conducting rod, the second conducting rod, the conducting wafer, the baffle ring and the small spring are all provided with three groups which are arranged at equal intervals.

Advantageous effects

The utility model provides a transformer substation uses relay protection device. Compared with the prior art, the method has the following beneficial effects:

(1) this relay protection device for transformer substation, through the first fixed plate of right side fixedly connected with at the lower shell internal surface, and the top fixedly connected with temperature sensing sheetmetal of first fixed plate, rivet fixed connection elastic steel piece is passed through at the left top of temperature sensing sheetmetal, and the left side fixedly connected with conductive contact piece of elastic steel piece, there is the second fixed plate right side just is located the top of elastic steel piece through adjusting screw threaded connection, and the left side rotation of second fixed plate bottom is connected with little shell fragment, the left side of little shell fragment just is located the bottom fixedly connected with gag lever post of second fixed plate, the top of epitheca and the bottom of inferior valve all run through and be fixed with the connector lug, and the connector lug is located epitheca and the inside one end of inferior valve respectively fixedly connected with first conducting rod and second conducting rod, the fixed surface of first conducting rod is connected with L type conducting plate, and the right side of L type conducting plate is close to the left side of first elastic conducting plate, the fixed surface of second conducting rod is connected with the coil, and the fixed connection coil of first fixed connection with the coil of the top when the top of the lower shell fragment can not pass through the conductive plate and the contact of the elastic steel piece and the high temperature sensing sheetmetal coil, and the push rod can not push rod, and the problem of the top of the push rod of the high-temperature sensing coil of the push rod can be connected with the high-push rod when the high-push rod of the high-temperature coil of the high-point of the high-push rod of the high-point of the electromagnet in-point of the high-point of the electricity of the high-point of the push rod of.

(2) The relay protection device for the transformer substation is characterized in that contact pieces are fixedly connected to the bottom end of the first conductive rod and the left end of the top end of the second conductive rod respectively, a conductive wafer is sleeved on the surface of the push rod, the right side of the conductive wafer is in electrical contact with the surface of the contact pieces, the conductive wafer comprises an insulating connecting sheet, semicircular conductive sheets are fixedly connected to the upper side and the lower side of the insulating connecting sheet respectively, the two semicircular conductive sheets are electrically connected through a fuse, a clamping groove clamped with the fuse is formed in the surface of each semicircular conductive sheet, a retaining ring is fixedly connected to the surface of the push rod and located on the two sides of the conductive wafer, a small spring is sleeved on the surface of the push rod and located between the left side of the conductive wafer and the retaining ring, the conductive wafer is pushed by the small spring, the small spring can be kept close to the, and utilize the fuse to connect, can realize the outage when the voltage is too high, convenient to use, and the fuse directly the card go into the draw-in groove can, simple to operate.

Drawings

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

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

FIG. 3 is an enlarged view of a portion of FIG. 1;

fig. 4 is a partially enlarged view of a portion a in fig. 1 according to the present invention.

In the drawing, 1-upper shell, 2-lower shell, 3-first fixed plate, 4-thermosensitive metal sheet, 5-elastic steel sheet, 6-conductive contact block, 7-second fixed plate, 8-small spring sheet, 9-limiting rod, 10-connector lug, 11-first conductive rod, 12-second conductive rod, 13-L type conductive plate, 14-conductive sheet, 15-coil, 16-electromagnet, 17-iron sheet, 18-hook plate, 19-counterweight steel ball, 20-push rod, 21-contact sheet, 22-conductive wafer, 23-insulating connection sheet, 24-semicircular conductive sheet, 25-fuse, 26-clamping groove, 27-retaining ring, 28-small spring, 29-pressing cap, 30-large spring and 31-adjusting screw.

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. 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.

Please refer to fig. 1-4, the present invention provides a technical solution, a relay protection device for a substation, comprising an upper housing 1 and a lower housing 2, a push rod 20 penetrates between the left sides of the upper housing 1 and the lower housing 2, and a right end of the bottom of the push rod 20 is hooked with a left side of the top of a hook plate 18, a material with different thermal expansion properties is used at two sides of a thermosensitive metal sheet 4, so that it bends at a high temperature, and further drives an elastic steel sheet 5 to bend, and simultaneously extrudes a small conductive sheet 8, only when the small conductive sheet 8 bends to the limit, the elastic steel sheet 5 is released and electrically contacts with a L type conductive sheet 13, i.e. a magnetic field is instantaneously generated by a coil 15 cooperating with an electromagnet 16, and further the iron sheet 17 is adsorbed to cause the hook plate 18 to rotate and release the push rod 20, so that the magnetic field is triggered to be powered off when the contact is reached a specified high temperature, instead of the thermosensitive metal sheet 4 gradually being powered off during bending, and the power is gradually turned off during the bending, and the power off can be avoided, the problem of power off or accidentally power off can be occurred between the front and back between the front and back of the front and back sides of the upper housing 1 and lower housing 2, the front and back of the lower housing 2, and rear side of the lower housing 2 is connected with a protective device, and rear housing 2, and the rear housing, and the rear housing are connected with a protective device is connected with a protective device, and the protective device is connected with a protective device, and the protective device, and protective device, the device is connected with a protective device, and protective device, the protective device.

And those not described in detail in this specification are well within the skill of those in the art.

During the use, on two connector lug 10 about receiving the electric wire respectively, utilize first conducting rod 11, second conducting rod 12 and semicircle conducting strip 24 cooperation to realize electrically conducting, when circuit voltage was too big, fuse 25 can melt and the open circuit, opens epitheca 1 or inferior valve 2 during the maintenance, then takes off the fuse 25 that falls, in going into draw-in groove 26 with new fuse 25 card, with two reconnection can.

When the temperature in the upper shell 1 and the lower shell 2 is too high, the thermosensitive metal sheet 4 is heated to deform, due to different deformation amounts of the metal sheets on the two sides, the thermosensitive metal sheet 4 is bent leftwards, the elastic steel sheet 5 is driven to incline leftwards, the elastic steel sheet 5 extrudes the small elastic sheet 8 to bend the small elastic sheet, when the small elastic sheet 8 bends to the limit, the elastic steel sheet 5 breaks through the small elastic sheet 8 to straighten, and further the electric contact block 6 on the surface of the small elastic sheet 8 is pressed to the surface of the L type electric conduction plate 13, so that the current on the first electric conduction rod 11 is transmitted to the upper end of the coil 15 through the L type electric conduction plate 13-electric contact block 6-elastic steel sheet 5-lead wire, and the lower end of the coil 15 is communicated with the second electric conduction rod 12 through the electric conduction plate 14, so that the coil 15 is electrified to generate magnetism, and further the electromagnet 16 generates magnetic force, the iron sheet 17 is instantly adsorbed to enable the hook plate 18 to rotate, the push rod 20 is.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a relay protection device for transformer substation, includes epitheca (1) and inferior valve (2), through screw fixed connection between the front and back both sides of epitheca (1) and inferior valve (2), its characterized in that, the right side fixedly connected with first fixed plate (3) of inferior valve (2) internal surface, and the top fixedly connected with heat-sensitive sheetmetal (4) of first fixed plate (3), rivet fixed connection has elastic steel sheet (5) at the left top of heat-sensitive sheetmetal (4), and the left side fixedly connected with conductive contact piece (6) of elastic steel sheet (5), the right side of epitheca (1) internal surface just is located the top of elastic steel sheet (5) and has second fixed plate (7) through adjusting screw (31) threaded connection, and the left side of second fixed plate (7) bottom rotates and is connected with little shell fragment (8), the left side of little shell fragment (8) just is located the bottom fixedly connected with gag lever post (9) of second fixed plate (7), the top of epitheca (1) and the bottom of inferior valve (2) top fixed plate (7) all are fixed with wire head (10) and be fixed connection with the first conductive plate (16) through adjusting screw (13), and the top of electromagnet coil (16) of electromagnet coil (13), the left side fixed connection is connected with the top of electromagnet coil (16) between the first conductive plate (13) and the electromagnet coil (13) of electromagnet coil (13), the left side fixed wire (16) of the left side fixed connection between the left side fixed connection of the conductive plate (16) of the top of the first conductive plate (13) and the bottom of electromagnet coil (15), the conductive plate (13) of electromagnet coil (16) of electromagnet coil (13) of electromagnet coil (15) and the electromagnet coil (15) of the right side of electromagnet coil (15), the conductive plate (15) of electromagnet coil (6) of the left side fixed connection between the right side of electromagnet coil (2) and.

2. The relay protection device for the substation according to claim 1, characterized in that: a push rod (20) penetrates between the left sides of the upper shell (1) and the lower shell (2), and the right end of the bottom of the push rod (20) is hooked with the left side of the top of the hook plate (18).

3. The relay protection device for the substation according to claim 2, characterized in that: the contact piece (21) is fixedly connected to the bottom end of the first conducting rod (11) and the left side of the top end of the second conducting rod (12), the conductive wafer (22) is sleeved on the surface of the push rod (20), and the right side of the conductive wafer (22) is in electrical contact with the surface of the contact piece (21).

4. The relay protection device for the substation according to claim 3, characterized in that: the conductive wafer (22) comprises an insulating connecting sheet (23), semicircular conductive sheets (24) are fixedly connected to the upper side and the lower side of the insulating connecting sheet (23) respectively, the semicircular conductive sheets (24) are electrically connected through a fuse (25), and a clamping groove (26) clamped with the fuse (25) is formed in the surface of each semicircular conductive sheet (24).

5. The relay protection device for the substation according to claim 3, characterized in that: the surface of push rod (20) just is located the equal fixedly connected with in both sides of electrically conductive disk (22) and keeps off ring (27), the surface of push rod (20) just is located the left side of electrically conductive disk (22) and keeps off and is equipped with little spring (28) between ring (27).

6. The relay protection device for the substation according to claim 2, characterized in that: the left end of push rod (20) just is located the outside fixedly connected with pressure cap (29) of epitheca (1) and inferior valve (2), the surface of push rod (20) just is located the left side of epitheca (1) and inferior valve (2) and presses the cover to be equipped with between cap (29) big spring (30).

7. The relay protection device for the substation according to claim 5, characterized in that: the connector lug (10), the first conducting rod (11), the second conducting rod (12), the conducting wafer (22), the baffle ring (27) and the small spring (28) are all provided with three groups and arranged at equal intervals.