CN112505587B

CN112505587B - Power failure detection device of transformer substation

Info

Publication number: CN112505587B
Application number: CN202110170661.9A
Authority: CN
Inventors: 戴吉勇; 孙建瑞; 孟宾; 李晓晨; 赵坤; 侯仁鹏; 刘喜军; 韩书婷
Original assignee: Shandong Wide Area Technology Co ltd
Current assignee: Shandong Wide Area Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-04-20
Anticipated expiration: 2041-02-08
Also published as: CN112505587A

Abstract

The utility model provides a transformer substation's power failure detection device, belong to the power failure detection field, including removing the seat, the top surface that removes the seat rotates the installation passenger cabin, the top surface and one side opening of passenger cabin, the one end of articulated folding arm in the passenger cabin, the other end fixed mounting C type iron core of folding arm, the elastic sleeve of the non-magnetic material of periphery suit of C type iron core, the periphery winding of elastic sleeve has solenoid, the first wire loop of the outer lane fixed mounting several non-magnetic material of elastic sleeve, fixed mounting several second wire loop on the folding arm, the one end of the first cotton rope of fixed connection is respectively distinguished at the both ends of C type iron core, first cotton rope all passes corresponding first wire loop in proper order, the one end of the same root second cotton rope of fixed connection is distinguished to the other end of first. This device realizes opening and shutting of C type iron core through the flexible of folding arm, realizes the locking of first line wheel in a flexible way through the motion of controlling first bar piece, has avoided setting up the structure on C type iron core, the unstable condition of focus can not appear.

Description

Power failure detection device of transformer substation

Technical Field

The invention belongs to the field of power failure detection, and particularly relates to a substation power failure detection device.

Background

The single-phase earth fault detection technology is continuously researched and discussed at home and abroad, a double-frequency signal detection and positioning method is proposed at home, based on the different impedance properties of a fault line and a non-fault line, the signal current has different ratios as criteria, the earth fault line selection and the fault point positioning are quickly and accurately carried out, a detector is required to be held by hands and moved for detection, the working strength is high, particularly when an overhead line is detected, the working mode is not suitable for the large environment of unmanned maintenance at present, but an effective and economically applicable fault detection mode is lacked, and therefore solution is needed urgently.

Disclosure of Invention

The invention provides a transformer substation power failure detection device, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a power failure detection device of a transformer substation comprises a moving seat, wherein a cabin is rotatably installed on the top surface of the moving seat, the top surface and one side of the cabin are open, one end of a folding arm is hinged in the cabin, a C-shaped iron core is fixedly installed at the other end of the folding arm, an elastic sleeve made of nonmagnetic materials is sleeved on the periphery of the C-shaped iron core, an electromagnetic coil is wound on the periphery of the elastic sleeve, a plurality of first wire rings made of nonmagnetic materials are fixedly installed on the outer ring of the elastic sleeve, a plurality of second wire rings are fixedly installed on the folding arm, two ends of the C-shaped iron core are respectively and fixedly connected with one end of a first wire rope, the first wire ropes sequentially penetrate through the corresponding first wire rings, the other ends of the first wire ropes are respectively and fixedly connected with one end of the same second wire rope, the second wire ropes sequentially penetrate through the second wire rings, a first wire wheel is rotatably installed on the, when a first wire rope is in a loose state, under the action of an elastic sleeve, two ends of a C-shaped iron core are folded, one end face of the first wire wheel is fixedly connected with one end of a rotating shaft, the rotating shaft and the first wire wheel share a center line, a plurality of strip-shaped grooves are formed in the periphery of the rotating shaft, first strip-shaped blocks are movably installed in the strip-shaped grooves, the periphery of each first strip-shaped block is in contact fit with the inner wall of the corresponding strip-shaped groove, the inner ends of the first strip-shaped blocks are respectively connected with the inner ends of the corresponding strip-shaped grooves through springs, a cavity is coaxially formed in the rotating shaft, through holes communicated with the cavity are formed in the inner ends of the strip-shaped grooves, the inner ends of the first strip-shaped blocks are respectively and fixedly connected with one end of a third wire rope, the third wire rope respectively penetrates through the corresponding through holes, a second wire wheel is rotatably installed in the cavity, the other end, the fixed plate is provided with a blind hole on one side facing the rotating shaft, the first strip-shaped blocks are all positioned in the blind hole, and a plurality of second strip-shaped blocks are fixedly arranged on the side wall of the blind hole.

According to the power failure detection device for the transformer substation, the movable base has an intelligent navigation function, and the movable base is provided with a cloud deck for collecting external image information and a communication antenna for receiving and transmitting remote signals.

According to the substation power failure detection device, two ends of the C-shaped iron core are respectively and fixedly connected with one end of the C-shaped rod, an opening of the C-shaped rod faces the outer side of the C-shaped iron core, and one end of the first rope is connected to the C-shaped rod.

According to the substation power failure detection device, the clamping blocks are fixedly arranged on the opposite surfaces of the C-shaped rods and are of wedge-shaped structures.

According to the substation power failure detection device, the number of the first bar-shaped blocks is even.

According to the substation power failure detection device, the opposite ends of the first strip-shaped block and the second strip-shaped block are in an isosceles trapezoid structure.

The invention has the advantages that: the invention is used for carrying out fault detection on the overhead line of the transformer substation, adopts a double-frequency signal detection and positioning method, skillfully combines the folding arm and the first cord, and can adjust the opening of the C-shaped iron core, thereby being suitable for circuits with different diameters; the switching between the closed ring and the open ring can be realized, so that different faults can be detected; meanwhile, the operation of taking impurities from high altitude can be realized by fully utilizing the opening and closing actions of the C-shaped iron core. When the device works, firstly, the height of the C-shaped iron core needs to be adjusted, at the moment, the first strip-shaped block is retracted into the strip-shaped groove, the folding arm is extended to drive the C-shaped iron core to rise, the first cord wound on the first cord wheel is released by the first cord wheel, when the C-shaped iron core moves to the position below a circuit to be tested and slightly jacks the circuit to be tested upwards, the motor works to drive the second cord wheel to rotate, at the moment, the rotating direction of the second cord wheel is released by the third cord wound on the second cord wheel, under the action of the spring, the first strip-shaped block pops out of the strip-shaped groove and is inserted between two adjacent second strip-shaped blocks, as the rotating shaft synchronously rotates along with the first cord wheel, the second strip-shaped block is static relative to the first cord wheel, therefore, the rotating shaft and the first cord wheel cannot continuously rotate, then, the folding arm slightly rises, at the moment, the tightened first cord pulls two ends of the C, the fault detection can be performed. The C-shaped iron core is opened and closed through the expansion of the folding arm, the first wire wheel is flexibly locked through controlling the movement of the first bar-shaped block, the C-shaped iron core is prevented from being provided with a structure, and the unstable gravity center can not occur; compared with structures such as an electric push rod and the like, the design of the device can not influence the detection result due to electromagnetic induction; manpower labor can be avoided, and the unmanned process of the transformer substation is promoted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced 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 structural view of the present invention; fig. 2 is a schematic view of a connection structure of the C-shaped iron core; fig. 3 is a schematic structural view of the rotating shaft.

Reference numerals: 1. the movable seat, 2, a cabin, 3, a folding arm, 4, a C-shaped iron core, 5, an elastic sleeve, 6, a first wire ring, 7, a second wire ring, 8, a first wire rope, 9, a second wire rope, 10, a first wire wheel, 11, a rotating shaft, 12, a strip-shaped groove, 13, a first strip-shaped block, 14, a spring, 15, a cavity, 16, a through hole, 17, a third wire rope, 18, a second wire wheel, 19, a fixed plate, 20, a blind hole, 21, a second strip-shaped block, 22, a C-shaped rod, 23 and a clamping block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A power failure detection device of a transformer substation comprises a movable seat 1, wherein a cabin 2 is rotatably installed on the top surface of the movable seat 1, the top surface and one side of the cabin 2 are open, one end of a folding arm 3 is hinged in the cabin 2, the folding arm 3 is formed by hinging a plurality of movable arms, two adjacent movable arms are connected through a telescopic rod which is used for adjusting the angle between the two corresponding movable arms, the movable arm at the top is made of nonmagnetic material, the folding arm 3 can retract into the cabin 2, a C-shaped iron core 4 is fixedly installed at the other end of the folding arm 3 and is symmetrical by taking the other end of the folding arm 3 as a center, the C-shaped iron core 4 is formed by hinging a plurality of iron cores end to end or winding a plurality of iron wires, when the movable arm at the top is parallel to the ground, the C-shaped iron core 4 is also parallel to the ground, an elastic sleeve 5 made of nonmagnetic material is sleeved on the periphery of the C-shaped iron core 4, and an electromagnetic, not shown in the figure, the C-shaped iron core 4 and the electromagnetic coil form a sensor for detecting faults, the sensor circuit is connected with a band-pass filter, an operational amplifier, a bluetooth module, and a signal processor wirelessly connected with the bluetooth module, and the like, and the ground fault detection, the short circuit fault detection, and the like can be realized by matching with a dual-frequency signal source, and the like, a plurality of first wire loops 6 made of nonmagnetic materials are fixedly installed on the outer ring of the elastic sleeve 5 and are uniformly distributed on the elastic sleeve 5, a plurality of second wire loops 7 are fixedly installed on the folding arm 3, the second wire loops 7 are all positioned at the top of the folding arm and are uniformly distributed, two ends of the C-shaped iron core 4 are respectively and fixedly connected with one end of a first wire 8, the first wire 8 sequentially penetrates through the corresponding first wire loops 6, the other end of the first wire 8 is respectively and fixedly connected with one end of the same second wire 9, the, the top surface of the cabin 2 is rotatably provided with a first wire wheel 10, the first wire wheel 10 is arranged on the cabin 2 through a wheel carrier, a coil spring is arranged at a rotating point, when the folding arm 3 extends, the coil spring enables the first wire wheel 10 to have a tendency of drawing in a first wire rope 8, the elasticity of the coil spring is far smaller than that of the elastic sleeve 5, the other end of a second wire rope 9 is fixedly connected with the first wire wheel 10 after being wound for a plurality of weeks around the first wire wheel 10, when the first wire rope 8 is in a loose state, the two ends of the C-shaped iron core 4 are folded under the action of the elastic sleeve 5, one end surface of the first wire wheel 10 is fixedly connected with one end of a rotating shaft 11, the rotating shaft 11 and the first wire wheel 10 share a center line, the periphery of the rotating shaft 11 is provided with a plurality of strip-shaped grooves 12, first strip-shaped blocks 13 are movably arranged in the strip-shaped grooves 12, the peripheries of the first strip-shaped blocks 13 are respectively contacted, the two ends of the spring 14 are all connected by welding, a cavity 15 is coaxially arranged in the rotating shaft 11, through holes 16 communicated with the cavity 15 are arranged at the inner ends of the strip-shaped grooves 12, the inner ends of the first strip-shaped blocks 13 are respectively and fixedly connected with one end of a third wire rope 17, the third wire ropes 17 respectively penetrate through the corresponding through holes 16, the first wire rope 8, the second wire rope 9 and the third wire rope 17 are all in a tightening state and are all made of nylon ropes, the second wire wheel 18 is rotatably arranged in the cavity 15, the second wire wheel 18 is connected with a power device, the power device is a motor, the motor is connected with a power supply and a circuit control system on the movable seat 1 through structures such as an electric brush and a conducting ring, the other end of the third wire rope 17 is respectively and fixedly connected with the second wire wheel 18, a fixed plate 19 is fixedly arranged on the top surface of the cabin 2, the fixed plate 19 is positioned at one side of the rotating, the first bar-shaped blocks 13 are all positioned in the blind holes 20, a plurality of second bar-shaped blocks 21 are fixedly arranged on the side wall of the blind holes 20, and the distance between two adjacent second bar-shaped blocks 21 is slightly larger than the width of the first bar-shaped blocks 13. The invention is used for carrying out fault detection on the overhead line of the transformer substation, adopts a double-frequency signal detection and positioning method, skillfully combines the folding arm 3 and the first cord 8, and can adjust the opening of the C-shaped iron core 4 so as to adapt to circuits with different diameters; the switching between the closed ring and the open ring can be realized, so that different faults can be detected; meanwhile, the operation of taking impurities from high altitude can be realized by fully utilizing the opening and closing actions of the C-shaped iron core 4. When the device works, firstly, the height of the C-shaped iron core 4 needs to be adjusted, at the moment, the first strip-shaped blocks 13 are all retracted into the strip-shaped grooves 12, the folding arms 3 are extended to drive the C-shaped iron core 4 to be lifted, the first wire ropes 8 wound on the first wire wheels 10 are released, when the C-shaped iron core 4 moves to the position below a circuit to be tested and slightly jacks the circuit to be tested upwards, the motor works to drive the second wire wheels 18 to rotate, at the moment, the rotation direction of the second wire wheels 18 is the third wire ropes 17 wound on the second wire wheels, under the action of the springs 14, the first strip-shaped blocks 13 pop out of the strip-shaped grooves 12 and are inserted between two adjacent second strip-shaped blocks 21, because the rotating shafts 11 synchronously rotate along with the first wire wheels 10, the second strip-shaped blocks 21 are static relative to the first wire wheels 10, therefore, the rotating shafts 11 and the first wire wheels 10 cannot continuously rotate, then the folding arms 3 slightly lift, at the moment, the tightened first, the C-shaped iron core 4 can be opened, and a circuit to be detected falls into the C-shaped iron core 4, so that fault detection can be carried out. The C-shaped iron core 4 is opened and closed through the extension and contraction of the folding arm 3, the first line wheel 10 is flexibly locked through controlling the movement of the first bar-shaped block 13, the C-shaped iron core 4 is prevented from being provided with a structure, and the unstable gravity center can not occur; compared with structures such as an electric push rod and the like, the design of the device can not influence the detection result due to electromagnetic induction; manpower labor can be avoided, and the unmanned process of the transformer substation is promoted.

Specifically, the mobile seat 1 described in this embodiment has an intelligent navigation function, and the mobile seat 1 has a pan-tilt for collecting external image information and a communication antenna for receiving and transmitting remote signals. The mobile seat 1 can control and execute tasks such as routing inspection, moving, circuit fault detection and the like through management system software.

Specifically, as shown in fig. 2, two ends of the C-shaped iron core 4 in this embodiment are respectively and fixedly connected to one end of a C-shaped rod 22, an opening of the C-shaped rod 22 faces the outside of the C-shaped iron core 4, and one end of the first cord 8 is connected to the C-shaped rod 22. When the first cord 8 is folded, the action point of force is positioned at the outer side of the end part of the C-shaped iron core 4, which is more beneficial to opening the C-shaped iron core 4; and when the circuit to be tested falls between the two C-shaped rods 22, the circuit to be tested cannot slide to two sides, and the circuit to be tested can be ensured to fall into the C-shaped iron core 4.

Further, as shown in fig. 2, the opposite surfaces of the C-shaped rod 22 of this embodiment are both fixedly mounted with clamping blocks 23, and the clamping blocks 23 are both wedge-shaped structures. When the two ends of the C-shaped iron core 4 are closed, the two clamping blocks 23 are contacted with each other, and compared with the C-shaped rod 22 with an arc-shaped structure, the acting points of the clamping blocks 23 are more concentrated, so that the clamping of sundries is more stable.

Further, as shown in fig. 3, the number of the first bar-shaped blocks 13 is even number. Preferably in the interval 8-12, it is avoided that one of the first bars 13 cannot be inserted between the second bars 21.

Further, as shown in fig. 3, the opposite ends of the first bar-shaped block 13 and the second bar-shaped block 21 of the present embodiment are in an isosceles trapezoid shape. This structure, like the tooth structure, can reduce the feeling of jerking of the first bar 13 between the second bars 21.

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

Claims

1. The utility model provides a transformer substation's power failure detection device, is including removing seat (1), and the top surface that removes seat (1) rotates installation passenger cabin (2), the top surface and one side opening of passenger cabin (2), the one end of articulated folding arm (3) in passenger cabin (2), its characterized in that: the other end of the folding arm (3) is fixedly provided with a C-shaped iron core (4), the periphery of the C-shaped iron core (4) is sleeved with an elastic sleeve (5) made of nonmagnetic materials, the periphery of the elastic sleeve (5) is wound with an electromagnetic coil, the outer ring of the elastic sleeve (5) is fixedly provided with a plurality of first wire rings (6) made of nonmagnetic materials, the folding arm (3) is fixedly provided with a plurality of second wire rings (7), the two ends of the C-shaped iron core (4) are respectively and fixedly connected with the two ends of a first wire rope (8), the first wire ropes (8) sequentially pass through the corresponding first wire rings (6), the middle sections of the first wire ropes (8) are fixedly connected with one end of the same second wire rope (9), the second wire ropes (9) sequentially pass through the second wire rings (7), the top surface of the cabin (2) is rotatably provided with a first wire wheel (10), and the other end of the second wire rope (9) is fixedly connected with the, when the first thread rope (8) is in a loose state, under the action of the elastic sleeve (5), two ends of the C-shaped iron core (4) are folded, one end face of the first thread wheel (10) is fixedly connected with one end of the rotating shaft (11), the rotating shaft (11) and the first thread wheel (10) share a center line, the periphery of the rotating shaft (11) is provided with a plurality of strip-shaped grooves (12), first strip-shaped blocks (13) are movably arranged in the strip-shaped grooves (12), the periphery of each first strip-shaped block (13) is respectively in contact fit with the inner walls of the corresponding strip-shaped grooves (12), the inner ends of the first strip-shaped blocks (13) are respectively connected with the inner ends of the corresponding strip-shaped grooves (12) through springs (14), a cavity (15) is coaxially arranged in the rotating shaft (11), through holes (16) communicated with the cavity (15) are respectively arranged at the inner ends of the strip-shaped grooves (12), and the inner ends of the first strip-, corresponding through-hole (16) are passed respectively in third cotton rope (17), cavity (15) internal rotation installation second line wheel (18), the other end of third cotton rope (17) all takes turns to (18) fixed connection with the second, top surface fixed mounting fixed plate (19) of passenger cabin (2), fixed plate (19) are located one side that first line wheel (10) set up pivot (11), blind hole (20) are seted up towards one side of pivot (11) in fixed plate (19), first bar (13) all are located blind hole (20), blind hole (20) lateral wall fixed mounting several second bar (21).

2. The substation power failure detection device of claim 1, wherein: the two ends of the C-shaped iron core (4) are fixedly connected with one end of a C-shaped rod (22) respectively, the openings of the C-shaped rods (22) face the outer side of the C-shaped iron core (4), and one end of a first rope (8) is connected to the C-shaped rods (22).

3. A substation power failure detection device according to claim 2, characterized in that: and clamping blocks (23) are fixedly arranged on the opposite surfaces of the C-shaped rods (22), and the clamping blocks (23) are all in a wedge-shaped structure.

4. The substation power failure detection device of claim 1, wherein: the number of the first bar-shaped blocks (13) is even.

5. A substation power failure detection apparatus according to claim 1 or 4, characterized in that: the opposite ends of the first strip-shaped block (13) and the second strip-shaped block (21) are both in an isosceles trapezoid structure.