CN112350156B

CN112350156B - Intelligent box-type substation

Info

Publication number: CN112350156B
Application number: CN202011186602.2A
Authority: CN
Inventors: 皮统政; 曾芎; 刘兵; 李君�; 邹红; 廖勇; 彭信尧; 曹健; 袁野; 周科; 高歌; 吴路波; 刘柏林; 崔振山; 吴小力; 廖伟雄; 徐超
Original assignee: Chongqing Wangbian Electric Group Corp ltd
Current assignee: Chongqing Wangbian Electric Group Corp ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2023-06-09
Anticipated expiration: 2040-10-30
Also published as: CN112350156A

Abstract

The invention relates to the field of transformer substations, in particular to an intelligent box-type transformer substation, which comprises a box body and a protection mechanism, wherein the box body comprises a transformer chamber, a low-voltage chamber and a high-voltage chamber, and a monitoring terminal is arranged in the low-voltage chamber; the high-pressure chamber comprises a door plate which is rotatably arranged, a chassis truck is arranged in the box body, and the chassis truck comprises a contact block; the protection mechanism comprises a spring, a protection rod, a bending strip and a protection block, and the contact block can be contacted with the protection rod; one end of the bending strip is fixedly connected with the protective rod, the protective block is fixedly connected with the door plate, a bayonet is arranged on the protective block, the other end of the bending strip can be clamped into the bayonet when the door plate is opened, and the protective block is propped against the other end of the contact block or the bending strip when the door plate is closed and the contact block is separated or propped against the protective rod; the top of case body is provided with the top cap, and the top cap can promote the inside heat dissipation of case body and the dust clearance on inside case body and the top cap. By adopting the technical scheme, the intelligent control, dust removal and heat dissipation and the improvement of the safety performance of the transformer box are facilitated.

Description

Intelligent box-type substation

Technical Field

The invention relates to the field of transformer substations, in particular to an intelligent box-type transformer substation.

Background

The box-type transformer substation is high-voltage switch equipment, a distribution transformer and a low-voltage distribution device, has the advantages of strong complete set, small volume, attractive appearance, safe and reliable operation, convenient maintenance, large selectivity and the like, and has the advantages of small occupied area, convenient movement, deep load center, short construction period, waste reduction and the like; however, intelligent control cannot be realized in the box-type transformer substation, dust exists in the box-type transformer substation, and the heat dissipation effect in the box-type transformer substation is poor; and if the high-voltage loop has faults such as interphase or single-phase grounding, the operation and closing of the circuit breaker can cause personal safety accidents, and potential safety hazards exist.

Disclosure of Invention

The invention aims to provide an intelligent box-type transformer substation which is favorable for dust removal, heat dissipation and safety improvement.

In order to achieve the above purpose, the technical scheme of the invention provides an intelligent box-type transformer substation, which comprises a box body and a protection mechanism, wherein the box body comprises a transformer chamber, a low-voltage chamber and a high-voltage chamber, a transformer is arranged in the transformer chamber, a monitoring terminal for monitoring the working state of the transformer is arranged in the low-voltage chamber, and the monitoring terminal is connected with the transformer;

the high-voltage chamber comprises a door plate which is rotatably arranged, and a circuit breaker is arranged in the high-voltage chamber; a chassis truck is arranged in the box body and comprises a contact block; the protection mechanism comprises a spring, a protection rod, a bending strip and a protection block, wherein the protection rod is connected with the side wall of the high-pressure chamber through the spring, and the contact block can be contacted with the protection rod; one end of the bending strip is fixedly connected with the protective rod, the protective block is fixedly connected with the door plate, a bayonet is arranged on the protective block, the other end of the bending strip can be clamped into the bayonet when the door plate is opened, and the protective block is propped against the other end of the contact block or the bending strip when the door plate is closed and the contact block is separated or propped against the protective rod; the top of case body is provided with the top cap, and the top cap can promote the inside heat dissipation of case body and the dust clearance on inside case body and the top cap.

The technical effect of this scheme is: the intelligent control of box-type substation can be realized in the setting of monitor terminal, and monitor terminal can realize temperature monitoring, low pressure outgoing line state monitoring and full electric quantity collection to the transformer, can also monitor transformer load rate, effectively improves the power supply reliability, improves the quality of power supply, and intelligent monitoring management can shorten accident handling time, reduces the power failure scope, reduces the expense of operation maintenance.

When the door plant is opened, in the bayonet socket was gone into to the one end card of buckling strip, because the one end and the guard bar fixed connection of buckling strip, the contact block of chassis car can't promote the guard bar removal this moment, prevents the potential safety hazard that the operation circuit breaker appears under the condition of opening the door, and the circuit breaker just can get into operating condition when only going up the door plant.

When the door plate is closed, when the contact block is abutted against the protective rod, the circuit breaker enters a working state, and when the door plate is opened under the condition, the protective block is abutted against the other end of the bending strip, so that the door plate cannot be completely opened, and potential safety hazards caused by operating the circuit breaker can be prevented; meanwhile, under the condition that the door plate is closed, when the contact block is separated from the protective rod, namely, when the contact block is not at the test position, the protective block is propped against the contact block, the door plate is locked and can not be opened, and the potential safety hazard caused by the fact that the contact block is propped against the protective rod when the chassis truck drives the contact block to move in the moving process after the door plate is opened is effectively prevented, so that the safety performance of equipment is improved.

And the contact block offsets with the guard bar and the in-process of separation, and the spring stretches out and draws back and produces the vibration to with vibration transmission to the case body, be favorable to the dust in the case body to tremble off, improve the cleanness of the internal components and parts of case, avoid the dust to cause components and parts to generate heat and damage.

The top cover is arranged to be favorable for improving the dust removal effect of the top cover and the heat dissipation and dust removal effect of the inside of the box body, and is favorable for prolonging the service life of the box-type substation.

Further, the top cap includes lid and two roof, is fixed with the support column on the case body, and the upper end at the support column is installed to the lid, and two roof are located the below of lid, and the middle part of two roof all rotates with the support column to be connected, forms the clearance between two roof, forms the passageway between lid and the two roof. The technical effect of this scheme is: in sunny weather, the top plate is beneficial to increasing the sunshade area and is convenient for the heat dissipation of the box body; under the weather of blowing in sunny days, the wind flows through the channel, so that heat and dust in the box body are sucked out through the gap and then blown off from the channel, compared with the existing heat dissipation mode, the air cannot be poured into the box body, the situation that the dust in the box body flies into electrical equipment while heat is dissipated is effectively avoided, and heat dissipation and dust removal are achieved simultaneously; under the action of gravity or impact force of rain drops and falling rainwater on the cover body in rainy weather, the top plate rotates around the middle of the top plate, the upper end of the top plate is contacted with the cover body and then impacts the cover body, and the cover body and the top plate vibrate, so that dust on the cover body and the top plate can fall off under the scouring of the rainwater more easily after the impact force is received, and the heat dissipation of the top cover is facilitated; meanwhile, rainwater cannot enter the box body after the upper end of the top plate is contacted with the cover body, so that the box body is fully ensured not to be wetted; and after the roof rotates, the covering area of roof reduces, and the rainwater can drench the ground that is close to case body lateral wall, and after the roof resets the increase shading area, moist ground is favorable to assisting the inside heat dissipation of case body.

Further, a notch is formed in the contact block, and the protection block can be abutted against the side wall of the notch. The technical effect of this scheme is: the blocking effect of the contact block on the protection block is improved.

Further, the side wall of the notch is provided with a groove, and the protection block can be embedded into the groove. The technical effect of this scheme is: after the contact block is separated from the protection rod, the protection block is ensured not to rotate.

Further, the protection rod is a screw rod, an annular body is fixed on the side wall of the high-pressure chamber, an annular groove is arranged in the annular body, a nut is rotationally arranged in the annular groove, two ends of the nut are in contact with the side wall of the annular groove, the protection rod is in non-self-locking connection with the nut, a fan blade is fixed on the nut, and holes communicated with the annular groove are formed in two ends of the annular body. The technical effect of this scheme is: the nut is driven to rotate in the moving process of the protective rod, so that the fan blade is driven to rotate, and generated wind is blown out from the hole to radiate the inside of the box body; in addition, the annular body can limit the bending strip in the moving process of the protective rod, so that the spring is prevented from being damaged due to failure caused by extremely compressing the spring; in addition, after the bending strip is limited by the annular body, other components on the chassis truck such as the moving contact can be prevented from excessively extruding the components in the box body such as the fixed contact, so that the moving contact or the fixed contact is prevented from being damaged.

Further, the circumference of the annular body is provided with holes communicated with the annular groove. The technical effect of this scheme is: the cooling box is favorable for cooling the box body by blowing out wind from the periphery of the annular body.

Further, the guard bar is in contact with the inner side wall of the annular body. The technical effect of this scheme is: in the process of the movement of the protection rod, the inner side wall of the annular body can guide the protection rod.

Further, the novel cover comprises two connecting rod groups, each connecting rod group comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the first connecting rod is hinged with the upper end of the top plate, and the other end of the second connecting rod is in sliding connection with the cover body. The technical effect of this scheme is: the upper end of the top plate is prevented from falling and being unable to reset.

Further, the other end of the second connecting rod is hinged with a sliding block, a convex sliding groove is formed in the cover body, and the sliding block is arranged in the sliding groove in a sliding mode. The technical effect of this scheme is: the stability of the connecting rod group is improved.

Further, the cover body is provided with a duct communicated with the chute, and a whistle is arranged at the duct. The technical effect of this scheme is: during rainy weather, the first connecting rod and the second connecting rod act in the rotating process of the top plate, so that the sliding block is driven to slide in the sliding groove, generated air flow enters the whistle after passing through the duct, and accordingly the whistle sounds to play a role in warning and prompting.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a three-dimensional schematic of an annular body;

FIG. 4 is a schematic view of the top cover;

FIG. 5 is a schematic view of the top plate after rotation;

fig. 6 is a partial enlarged view at B in fig. 4.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the box body 1, the chassis 2, the high-pressure chamber 3, the door plate 4, the contact block 5, the moving contact 6, the spring 7, the protection rod 8, the bending strip 9, the protection block 10, the bayonet 11, the notch 12, the groove 13, the support rod 14, the annular body 15, the annular groove 16, the hole 17, the hole 18, the marking block 19, the transformer chamber 20, the low-pressure chamber 21, the cover 22, the top plate 23, the support column 24, the rotating rod 25, the gap 26, the channel 27, the first connecting rod 28, the second connecting rod 29, the concave block 30, the sliding block 31, the pore canal 32 and the push rod 33.

Embodiment one:

example one substantially as shown in figures 1 to 6: the intelligent box-type substation shown in fig. 1 comprises a box body 1 and a protection mechanism, wherein the box body 1 comprises a transformer room 20, a low-voltage room 21 and a high-voltage room 3, and a transformer is arranged in the transformer room 20; the high-voltage chamber 3 comprises a door plate 4 rotatably arranged on the side wall of the high-voltage chamber 3 through a hinge, and a circuit breaker is arranged in the high-voltage chamber 3; the bottom of the box body 1 is slidably provided with a chassis 2, and the chassis 2 comprises a contact block 5 and a moving contact 6.

As shown in fig. 2, the protection mechanism comprises a spring 7, a protection rod 8, a bending bar 9 and a protection block 10, wherein the protection rod 8 is connected with the side wall of the high-pressure chamber 3 through the spring 7, namely, the left end of the spring 7 is welded with the side wall of the high-pressure chamber 3, the right end of the spring 7 is welded with the left end of the protection rod 8, and the contact block 5 is contacted with the protection rod 8, and the contact position is called a test position.

The left end of the bending strip 9 is welded with the protection rod 8, the protection block 10 is welded with the door plate 4, a bayonet 11 is formed in the protection block 10, the right end of the bending strip 9 can be clamped into the bayonet 11 when the door plate 4 is opened (at the position of a dotted line), and the size of the bayonet 11 is larger than that of the right end of the bending strip 9.

The contact block 5 is provided with a notch 12, when the door plate 4 is closed, and when the contact block 5 is separated from the protection rod 8 (the contact block 5 moves rightwards in fig. 2), the protection block 10 is abutted against the side wall of the notch 12, the side wall of the notch 12 is provided with a groove 13, and the protection block 10 can be embedded into the groove 13; meanwhile, when the door plate 4 is closed, and when the contact block 5 abuts against the protection rod 8 (the contact block 5 moves leftwards in fig. 2), the bending strip 9 moves leftwards, the protection block 10 abuts against the right end of the bending strip 9 in the process of rotating and opening the door plate 4, and the door plate 4 cannot be completely opened.

The top cover shown in fig. 4 is arranged above the box body 1, the top cover comprises a cover body 22 and two top plates 23, a support column 24 is welded on the box body 1, the cover body 22 is welded at the upper end of the support column 24, and the two top plates 23 are positioned below the cover body 22; a rotating rod 25 is welded on the support column 24, a round hole is formed in the middle of each of the two top plates 23, and the rotating rod 25 penetrates through the round hole, namely, the middle of each of the two top plates 23 is rotationally connected with the rotating rod 25; a gap 26 is formed between the two top plates 23, and a channel 27 is formed between the cover 22 and the two top plates 23. Of course, in order to prevent the upper end of the top plate 23 from falling down, a pull rope may be connected to the upper end of the top plate 23, and the upper end of the pull rope may be connected to the cover 22.

A monitoring terminal for monitoring the working state of the transformer is arranged in the low-voltage chamber 21, and the monitoring terminal is connected with the transformer. The arrangement of the monitoring terminal is similar to that of a patent transformer station (bulletin No. CN 106684744A). Of course, the box-type substation may omit the provision of the monitoring terminal portion, i.e., the box-type substation in the present embodiment includes only the structure other than the monitoring terminal.

The specific implementation process is as follows:

as shown in fig. 1 and 2, when the door panel 4 is opened (the position shown by the dotted line in the drawing), the right end of the bending strip 9 is clamped into the bayonet 11, and the left end of the bending strip 9 is welded with the protection rod 8, so that the contact block 5 of the chassis 2 cannot push the protection rod 8 to move leftwards, thereby preventing the potential safety hazard of operating the circuit breaker under the condition of opening the door, and only when the door panel 4 is closed, the circuit breaker can be operated to enter the working state.

When the door plate 4 is closed, when the contact block 5 is abutted against the protection rod 8 (the contact block 5 moves leftwards in fig. 2), the circuit breaker enters a working state, and when the door plate 4 is rotated to be opened in the case, the protection block 10 is abutted against the right end of the bending strip 9, so that the door plate 4 cannot be completely opened, and the potential safety hazard caused by operating the circuit breaker can be prevented; meanwhile, under the condition that the door plate 4 is closed, when the contact block 5 is separated from the protection rod 8 (the contact block 5 moves rightwards in fig. 2), namely, when the contact block 5 is not at the test position, the protection block 10 abuts against the side wall of the notch 12 of the contact block 5 when the door plate 4 is rotated to be opened, the door plate 4 is locked and can not be opened, and potential safety hazards caused by the fact that the chassis 2 abuts against the protection rod 8 when the contact block 5 moves leftwards in the opening process of the door plate 4 are effectively prevented, so that the safety performance of equipment is improved.

As shown in fig. 4, in a sunny weather, the top plate 23 is beneficial to increasing the sunshade area and facilitating the heat dissipation of the box body 1; in the sunny weather, the wind flows through the channel 27, so that the heat and dust in the box body 1 are sucked out through the gap 26 and then blown off from the channel 27, compared with the existing heat dissipation mode, the wind cannot be poured into the box body 1, the situation that the dust in the box body 1 flies into electrical equipment while heat is dissipated is effectively avoided, and heat dissipation and dust removal are achieved simultaneously; in rainy weather, under the action of gravity or impact force of raindrops and rainwater sliding on the cover body 22, the top plate 23 rotates around the middle part of the top plate to a state shown in fig. 5, the upper end of the top plate 23 contacts with the cover body 22 and then impacts the cover body 22, and the cover body 22 and the top plate 23 vibrate, so that the dust on the cover body 22 and the top plate 23 is easier to fall under the scouring of the rainwater after receiving the impact force, and the heat dissipation of the top cover is facilitated; meanwhile, rainwater cannot enter the box body 1 after the upper end of the top plate 23 is contacted with the cover body 22, so that the box body 1 is fully ensured not to be wetted; and after the roof 23 rotates, the covering area of the roof 23 is reduced, rainwater can be wetted on the ground close to the side wall of the box body 1, and when the roof 23 resets to enlarge the shading area, the moist ground is favorable for assisting the heat dissipation inside the box body 1.

Embodiment two:

on the basis of the first embodiment, a supporting rod 14 is welded on the side wall of the high-pressure chamber 3, and an annular body 15 is welded at the right end of the supporting rod 14; as shown in fig. 3, the annular body 15 is internally provided with an annular groove 16, the annular groove 16 is rotationally provided with a nut, and two ends of the nut are contacted with the side wall of the annular groove 16, namely, the thickness of the nut is equal to the width of the annular groove 16.

The protection rod 8 is a screw rod, rectangular threads are formed on the screw rod, the helix angle of the rectangular threads is 55 degrees, and the screw rod is in threaded connection with the nut, namely the protection rod 8 is in non-self-locking connection with the nut; the nut is welded with a fan, holes 17 communicated with the annular groove 16 are formed at two ends of the annular body 15, and holes 18 communicated with the annular groove 16 are formed in the circumferential direction of the annular body 15.

In addition, the threaded hole of the nut is equal in diameter to the annular hole of the annular body 15, i.e., the guard bar 8 is in contact with the inner side wall of the annular body 15. As shown in fig. 2, a marking block 19 is welded in the case body 1, and when the contact block 5 is in contact with the protection rod 8, the right edge of the chassis 2 is aligned with the marking block 19.

Embodiment III:

on the basis of the second embodiment, the two connecting rod groups are further included, as shown in fig. 6, each connecting rod group comprises a first connecting rod 28 and a second connecting rod 29, the upper end of the first connecting rod 28 is hinged with the lower end of the second connecting rod 29 through a pin shaft, a concave block 30 is welded at the upper end of the top plate 23, and the lower end of the first connecting rod 28 is hinged with the concave block 30 through a pin shaft.

The upper end of the second connecting rod 29 is hinged with a sliding block 31 through a pin shaft, and the sliding block 31 is concave; the cover 22 is provided with a convex chute, which comprises an expansion part and a contraction part, and the slide block 31 is slidably arranged in the expansion part of the chute.

The cover 22 is provided with a duct 32 communicating with the enlarged portion of the chute, and a whistle (not shown) is mounted in the duct 32 and is located on the lower surface of the cover 22. When the top plate 23 is rotated from the state shown in fig. 4 to the state shown in fig. 5, the first connecting rod 28 and the second connecting rod 29 drive the sliding block 31 to slide in the enlarged part of the sliding groove, and the generated air flow enters the whistle after passing through the duct 32, so that the whistle sounds to play a prompting role, and pedestrians are warned not to get close to the box body 1.

A push rod 33 is welded on the slide block 31, and the push rod 33 is arranged in the duct 32 in a sliding way; the slide 31 is coated with a graphite layer; a weight (not shown in the drawings) is mounted to the upper end of the top plate 23.

The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent.

Claims

1. Intelligent box-type transformer substation, its characterized in that: the device comprises a box body and a protection mechanism, wherein the box body comprises a transformer chamber, a low-voltage chamber and a high-voltage chamber, a transformer is arranged in the transformer chamber, a monitoring terminal for monitoring the working state of the transformer is arranged in the low-voltage chamber, and the monitoring terminal is connected with the transformer;

the high-voltage chamber comprises a door plate which is rotatably arranged, and a circuit breaker is arranged in the high-voltage chamber; a chassis truck is arranged in the box body and comprises a contact block; the protection mechanism comprises a spring, a protection rod, a bending strip and a protection block, wherein the protection rod is connected with the side wall of the high-pressure chamber through the spring, and the contact block can be contacted with the protection rod; one end of the bending strip is fixedly connected with the protective rod, the protective block is fixedly connected with the door plate, a bayonet is arranged on the protective block, the other end of the bending strip can be clamped into the bayonet when the door plate is opened, and the protective block is propped against the other end of the contact block or the bending strip when the door plate is closed and the contact block is separated or propped against the protective rod;

a top cover is arranged above the box body, and the top cover can promote heat dissipation inside the box body and dust cleaning inside the box body and on the top cover; the contact block is provided with a notch, and the protection block can be propped against the side wall of the notch; when the door plate is closed, when the contact block abuts against the protective rod, the circuit breaker enters a working state, and when the door plate is opened by rotating under the condition, the protective block abuts against the right end of the bending strip, so that the door plate cannot be opened completely; meanwhile, under the condition that the door plate is closed, when the contact block is separated from the protection rod, namely, when the contact block is not at the test position, and the door plate is rotated to be opened, the protection block is propped against the side wall of the notch of the contact block, and the door plate is locked and can not be opened.

2. The intelligent box-type substation according to claim 1, characterized in that: the top cap includes lid and two roof, is fixed with the support column on the case body, and the upper end at the support column is installed to the lid, and two roof are located the below of lid, and the middle part of two roof all rotates with the support column to be connected, forms the clearance between two roof, forms the passageway between lid and the two roof.

3. The intelligent box-type substation according to claim 1, characterized in that: the lateral wall of breach is equipped with the recess, and the protection piece can imbed in the recess.

4. An intelligent box-type substation according to claim 3, characterized in that: the protection rod is a screw rod, an annular body is fixed on the side wall of the high-pressure chamber, an annular groove is arranged in the annular body, a nut is rotationally arranged in the annular groove, two ends of the nut are in contact with the side wall of the annular groove, the protection rod is in non-self-locking connection with the nut, a fan blade is fixed on the nut, and holes communicated with the annular groove are formed in two ends of the annular body.

5. The intelligent box-type substation according to claim 4, wherein: the circumference of the annular body is provided with holes communicated with the annular groove.

6. The intelligent box-type substation according to claim 5, characterized in that: the guard bar is in contact with the inner side wall of the annular body.

7. The intelligent box-type substation according to claim 6, characterized in that: the novel cover comprises a cover body, and is characterized by further comprising two connecting rod groups, wherein each connecting rod group comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the first connecting rod is hinged with the upper end of the top plate, and the other end of the second connecting rod is in sliding connection with the cover body.

8. The intelligent box-type substation according to claim 7, wherein: the other end of the second connecting rod is hinged with a sliding block, a convex sliding groove is arranged on the cover body, and the sliding block is arranged in the sliding groove in a sliding way.

9. The intelligent box-type substation according to claim 8, wherein: the cover body is provided with a duct communicated with the chute, and a whistle is arranged at the duct.