CN116893339A - High-voltage isolating switch fault diagnosis device - Google Patents

Abstract

The invention discloses a fault diagnosis device for a high-voltage isolating switch, which is characterized in that when the fault diagnosis device is specifically used, a moving contact and a fixed contact of the isolating switch are separated, then a first driving part is started to move a sliding seat to be close to the fixed contact to be detected, then a second driving part is started to enable a first contact piece and a second contact piece to extend into a space between the first contact piece and the second contact piece, then the first contact piece is abutted against the first contact piece, the second contact piece is abutted against the second contact piece, namely an infrared distance sensor is used for detecting the distance between the first contact piece and the second contact piece based on the first contact piece and the second contact piece, further judging whether the distance is larger than a distance threshold value, if the distance is larger than the distance threshold value, the gap between the first contact piece and the second contact piece of the fixed contact piece is increased, namely the clamping degree between the moving contact piece and the fixed contact piece is reduced, and overhaul is needed.

Description

High-voltage isolating switch fault diagnosis device

Technical Field

The invention relates to the technical field of isolating switches, in particular to a fault diagnosis device for a high-voltage isolating switch.

Background

An isolating switch is an electrical device mainly used for isolating a power supply; the isolating switch can perform switching operation and can also be used for connecting and disconnecting a circuit with current. When the isolating switch is in the split position, the contacts have an insulation distance meeting the specified requirement and obvious disconnection marks; when the isolating switch is at the closing position, the isolating switch can bear current under normal loop conditions and current under abnormal conditions (such as short circuit) within a specified time.

The high-voltage isolating switch is an isolating switch with rated voltage above 1kV, and is one of the most extensive electrical equipment in a power grid as an important element of a power transmission and transformation system; the isolating switch comprises a moving contact and a fixed contact, and the circuit is communicated through the combination of the moving contact and the fixed contact; along with long-time outdoor operation of the isolating switch, the clamping force between the moving contact and the fixed contact can be reduced, so that combination faults are caused, and abnormal power failure accidents are caused; however, at present, the clamping degree between the movable contact and the fixed contact is detected only by manual inspection, which is time-consuming and labor-consuming, and faults cannot be found in time; therefore, a scheme capable of monitoring the clamping degree between the movable contact and the fixed contact in real time in the daily operation of the isolating switch is needed.

Disclosure of Invention

The invention mainly aims to provide a fault diagnosis device for a high-voltage isolating switch, and aims to solve the problem that a scheme capable of monitoring the clamping degree between a moving contact and a fixed contact in real time in daily operation of the isolating switch is needed.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

a fault diagnosis device of a high-voltage isolating switch comprises an isolating switch body and a diagnosis component; the isolating switch body comprises a base, a fixed contact and a moving contact; the number of the fixed contacts and the number of the movable contacts are multiple, and the fixed contacts and the movable contacts are in one-to-one correspondence; the fixed contact comprises a first contact plate and a second contact plate which are parallel to each other and are opposite to each other; the diagnosis component comprises a sliding seat, a first driving part, a rotating seat, a second driving part, a first contact piece, a second contact piece and an infrared distance sensor; the sliding seat is arranged on the base in a sliding manner; the rotating seat is rotatably arranged on the sliding seat; the first contact piece and the second contact piece are arranged on the rotating seat, and are parallel and opposite to each other; the first driving component is used for driving the sliding seat to translate on the base so as to enable the sliding seat to be close to each fixed contact; the second driving part is used for driving the rotating seat to rotate relative to the sliding seat so that the first contact piece and the second contact piece extend into the space between the first contact piece and the second contact piece; the first contact piece is used for abutting the first contact plate, and the second contact piece is used for abutting the second contact plate; the infrared distance sensor is configured to detect a distance between the first touch plate and the second touch plate based on the first touch plate and the second touch plate.

Preferably, the first driving part comprises a first motor and a screw; the base is provided with a first sliding rail; the sliding seat is provided with a sliding groove; the first sliding rail is matched with the first sliding rail to slide and penetrate through the first sliding rail; the screw rod is rotatably arranged on the base, and is parallel to the extending direction of the first sliding rail; the screw rod and the first sliding rail are both positioned at one side of the fixed contact, which is away from the moving contact; the sliding seat is provided with a threaded hole, and the screw rod is matched and screwed in the threaded hole; the first motor is used for driving the screw rod to rotate so as to drive the sliding seat to slide along the extending direction of the first sliding rail; the extending direction of the first sliding rail is parallel to the arrangement direction of the fixed contacts.

Preferably, the second driving part comprises a second motor, a rotating shaft, a first gear and a second gear; the rotating seat comprises a first supporting plate; the sliding seat is provided with a supporting seat; the rotating shaft is rotatably arranged on the supporting seat in a penetrating manner; the rotating shaft is parallel to the extending direction of the first sliding rail; the first supporting plate is connected to one end of the rotating shaft; one end of the rotating shaft, which is far away from the first supporting plate, is coaxially connected with the first gear; the second motor is arranged on the supporting seat; the output shaft of the second motor is coaxially connected with the second gear; the first gear is meshed with the second gear; the rotating seat can rotate to a first position and a second position; when the rotating seat is positioned at a first position, the first contact piece and the second contact piece extend into the space between the first contact plate and the second contact plate; when the rotating seat is at the second position, the first contact piece and the second contact piece do not extend between the first contact plate and the second contact plate.

Preferably, the rotating seat further comprises a second supporting plate and a connecting rod; the connecting rod is vertically connected with the first supporting plate, and one end, far away from the first supporting plate, of the connecting rod is vertically connected with the second supporting plate; the first support plate is parallel to the second support plate; the first contact piece and the second contact piece are both connected to the connecting rod in a sliding manner; the second supporting plate is vertically connected with a first contact plate and a second contact plate respectively; the first contact plate is perpendicular to the second contact plate; the connecting rods are respectively parallel to the first contact plate and the contact plate; the diagnostic assembly further includes a securing member for securing the rotatable mount.

Preferably, the fixing part comprises a fixing plate, a telescopic rod and a first spring; the base is provided with a connecting plate; the telescopic rod is arranged in the connecting plate in a sliding penetrating way; the telescopic rod is perpendicular to the connecting rod; the fixed plate is vertically connected with one end of the telescopic rod, which is far away from the sliding seat; the fixed plate is parallel to the connecting rod; the first spring is sleeved on the telescopic rod, one end of the first spring is connected with the fixed plate, the other end of the first spring is connected with the connecting plate, and the first spring is always in a compressed state; the elastic force of the first spring enables the fixed plate to be abutted against the first contact plate or the second contact plate; when the rotating seat is at a first position, the fixed plate is abutted against the first contact plate; when the rotating seat is at the second position, the fixed plate is abutted against the second contact plate.

Preferably, the fixing part further comprises a first cover plate, a first cover cylinder, a second spring, a first electromagnet, a first lock rod and a first baffle; the first cover plate is arranged on the first contact plate, and a preset distance is kept between the first cover plate and the first contact plate; when the rotating seat is at a first position, the first cover plate is positioned on one side of the first contact plate, which is away from the base; the first cover cylinder is embedded in the first cover plate; the first lock rod is embedded in the first cover cylinder in a sliding manner; the first lock rod is perpendicular to the first contact plate; the first baffle plate is sleeved on the first lock rod; the first baffle is positioned between the first cover cylinder and the first contact plate; the fixed plate is provided with a first through hole, and the telescopic rod is axially provided with a through groove; the first contact plate is provided with a second through hole; the first through hole is opposite to the through groove; when the rotating seat is positioned at a first position, the first through hole and the second through hole are opposite; the inner diameters of the first through hole and the second through hole are consistent, and the inner diameter of the first through hole is larger than the inner diameter of the through groove; a round head is formed at one end, far away from the first cover cylinder, of the first lock rod, the outer diameter of the first lock rod is smaller than the inner diameter of the through groove, and the difference value between the inner diameter of the first lock rod and the inner diameter of the through groove is smaller than a preset value;

The first electromagnet is arranged at the inner bottom of the first cover cylinder; the first electromagnet is used for attracting the first lock rod; the second spring is sleeved on the first lock rod; one end of the second spring is connected with the first cover cylinder, the other end of the second spring is connected with the first baffle plate, the first spring is always in a compressed state, and the elastic force of the first spring enables the first baffle plate to be abutted against the first contact plate; when the first baffle is abutted against the first contact plate, the first lock rod sequentially penetrates through the second through hole, the first through hole and the through groove; when the first electromagnet is attracted to the first lock rod, the first lock rod does not extend out of the second through hole any more.

Preferably, the fixing part further comprises a second cover plate, a second cover cylinder, a third spring, a second electromagnet, a second lock rod and a second baffle; the second cover plate is arranged on the second contact plate, and a preset distance is kept between the second cover plate and the second contact plate; when the rotating seat is at the second position, the second cover plate is positioned on one side of the second contact plate, which is away from the base; the second cover cylinder is embedded in the second cover plate; the second lock rod is embedded in the second cover cylinder in a sliding manner; the second lock rod is perpendicular to the second contact plate; the second baffle is sleeved on the second lock rod; the second baffle is positioned between the second cover cylinder and the second contact plate; the second contact plate is provided with a third through hole; when the rotating seat is positioned at the second position, the third through hole is opposite to the first through hole; the inner diameters of the third through hole and the first through hole are consistent; a round head is formed at one end, far away from the second cover cylinder, of the second lock rod, the outer diameter of the second lock rod is smaller than the inner diameter of the through groove, and the difference value between the inner diameter of the second lock rod and the inner diameter of the through groove is smaller than a preset value;

The second electromagnet is arranged at the inner bottom of the second cover cylinder; the second electromagnet is used for attracting the second lock rod; the third spring is sleeved on the second lock rod; one end of the third spring is connected with the second cover cylinder, the other end of the third spring is connected with the second baffle plate, the third spring is always in a compressed state, and the second baffle plate is abutted against the second contact plate by the elastic force of the third spring; when the second baffle is abutted against the second contact plate, the second lock rod sequentially penetrates through the third through hole, the first through hole and the through groove; when the second electromagnet is attracted to the second lock rod, the second lock rod does not extend out of the third through hole any more.

Preferably, the diagnostic assembly further comprises a first sled and a second sled; the first sliding plate is provided with a first sleeve in a penetrating way; the first sleeve is sleeved on the connecting rod in a sliding way; the cross section of the connecting rod is rectangular; the second sliding plate is provided with a second sleeve in a penetrating way; the second sleeve is sleeved on the connecting rod in a sliding way; the first sliding plate and the second sliding plate are parallel to each other and are opposite to each other; the first contact piece is connected to the first sliding plate and is parallel to the first sliding plate; the second contact piece is connected to the second sliding plate and is parallel to the second sliding plate; the distance between the first sliding plate and the second sliding plate is larger than the distance between the first contact piece and the second contact piece; the infrared distance sensor is arranged on one side of the first sliding plate, which faces the second sliding plate; the infrared distance sensor is used for detecting the distance between the first sliding plate and the second sliding plate.

Preferably, the diagnostic assembly further comprises a fourth spring and a fifth spring; one end of the fourth spring is connected to the first sliding plate, and the other end of the fourth spring is connected to the first supporting plate; one end of the fifth spring is connected with the second sliding plate, and the other end of the fifth spring is connected with the second supporting plate.

Preferably, the diagnostic assembly further comprises a rope, a first sheave, a second sheave, a third electromagnet, and a slider; the first supporting plate is provided with a second sliding rail; the extending direction of the second sliding rail is perpendicular to the connecting shaft; the sliding block is sleeved on the second sliding rail in a sliding way; the third electromagnet is arranged on the first supporting plate; the third electromagnet is used for attracting the sliding block; the first sheave is rotatably arranged on the first supporting plate; the second sheave is rotatably arranged on the second supporting plate; the rotation axis of the first sheave is parallel to the rotation axis of the second sheave; the rotation axis of the first sheave is parallel to the first support plate;

the first sliding plate is provided with a fourth through hole; the second sliding plate is provided with a fifth through hole; one end of the rope is connected to the first sliding plate, sequentially penetrates through the fifth through hole, then winds around the second grooved wheel, fixedly penetrates through the second sliding plate, penetrates through the fourth through hole, winds around the first grooved wheel and is connected to the sliding block; when the third electromagnet is attracted to the sliding block, the first contact piece is in contact with the second contact piece in a fitting mode.

Compared with the prior art, the invention has at least the following beneficial effects:

the fault diagnosis device for the high-voltage isolating switch provided by the invention can monitor the clamping degree between the moving contact and the fixed contact in real time in the daily operation of the isolating switch; when the device is specifically used, a moving contact and a fixed contact of an isolating switch are separated, a first driving part is started to move a sliding seat to be close to the fixed contact to be detected, a second driving part is started to enable a first contact piece and a second contact piece to extend into a space between the first contact piece and the second contact piece, then the first contact piece is abutted against the first contact piece, the second contact piece is abutted against the second contact piece, namely an infrared distance sensor is used for detecting the distance between the first contact piece and the second contact piece based on the first contact piece and the second contact piece, and then whether the distance is larger than a distance threshold value is judged, if the distance is larger than the distance threshold value, the gap between the first contact piece and the second contact piece of the fixed contact is increased, namely the clamping degree between the moving contact piece and the fixed contact piece is reduced, and overhauling is needed; if the distance is not greater than the distance threshold, the gap between the first contact plate and the second contact plate of the fixed contact is not increased, namely the clamping degree between the moving contact and the fixed contact is not reduced, and maintenance is not needed; the whole monitoring process can be automatically performed without manual intervention, and the efficiency is higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a fault diagnosis apparatus for a high voltage isolation switch according to the present invention;

FIG. 2 is an enlarged schematic view of a detail A in FIG. 1;

FIG. 3 is a schematic top view of a fault diagnosis device for a high-voltage isolating switch according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of detail B in fig. 3.

Reference numerals illustrate:

110. a base; 120. a stationary contact; 130. a moving contact; 140. a first touch plate; 150. a second touch plate; 160. a first contact; 170. a second contact; 180. a first support plate; 190. a second support plate; 210. a sliding seat; 220. a screw rod; 230. a first slide rail; 240. a support base; 250. a rotating seat; 260. a first cover plate; 270. a first cover cylinder; 280. a first electromagnet; 290. a second spring; 310. a first lock lever; 320. a first baffle; 330. a first contact plate; 340. a second contact plate; 350. a second through hole; 360. a first through hole; 370. a through groove; 380. a first spring; 390. a telescopic rod; 410. a connecting plate; 420. a fixing plate; 430. a connecting rod; 440. a first slide plate; 450. a second slide plate; 460. a first sleeve; 470. a second sleeve; 480. an infrared distance sensor; 490. a primary sheave; 510. a second sheave; 520. a rope; 530. a fifth through hole; 540. a fourth through hole; 550. a second slide rail; 560. a slide block; 570. a third electromagnet; 580. a rotating shaft; 590. a first gear; 610. a second cover plate; 620. a fourth spring; 630. and a fifth spring.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

The invention provides a fault diagnosis device for a high-voltage isolating switch.

Referring to fig. 1 to fig. 4, in an embodiment of a fault diagnosis apparatus for a high voltage isolating switch according to the present invention, the diagnosis apparatus includes an isolating switch body and a diagnosis assembly; the isolating switch body comprises a base 110, a fixed contact 120 and a movable contact 130; the number of the fixed contacts 120 and the number of the movable contacts 130 are all a plurality (3 in the embodiment), and the fixed contacts 120 and the movable contacts 130 are in one-to-one correspondence; the stationary contact 120 includes a first contact plate 140 and a second contact plate 150 that are parallel to each other and are diametrically opposed; the diagnostic assembly includes a slide mount 210, a first drive member, a swivel mount 250, a second drive member, a first contact 160, a second contact 170, and an infrared distance sensor 480; the sliding seat 210 is slidably disposed on the base 110; the rotating seat 250 is rotatably disposed on the sliding seat 210; the first contact 160 and the second contact 170 are disposed on the rotating base 250, and the first contact 160 and the second contact 170 are parallel to each other and are opposite to each other; the first driving component is used for driving the sliding seat 210 to translate in the base 110, so that the sliding seat 210 is close to each fixed contact 120; the second driving component is used for driving the rotating base 250 to rotate relative to the sliding base 210, so that the first contact 160 and the second contact 170 extend between the first contact 140 and the second contact 150; the first contact 160 is used for abutting the first contact 140, and the second contact 170 is used for abutting the second contact 150; the infrared distance sensor 480 is used to detect a distance between the first and second touch plates 140 and 150 based on the first and second touch plates 160 and 170.

The fault diagnosis device for the high-voltage isolating switch provided by the invention can monitor the clamping degree between the moving contact 130 and the fixed contact 120 in real time in the daily operation of the isolating switch; when the device is specifically used, the moving contact 130 and the fixed contact 120 of the isolating switch are separated, then the first driving component is started to move the sliding seat 210 to be close to the fixed contact 120 to be detected, then the second driving component is started to enable the first contact 160 and the second contact 170 to extend into between the first contact 140 and the second contact 150, then the first contact 160 is abutted against the first contact 140, the second contact 170 is abutted against the second contact 150, namely the infrared distance sensor 480 is used for detecting the distance between the first contact 140 and the second contact 150 based on the first contact 160 and the second contact 170, and further judging whether the distance is larger than a distance threshold value, if so, the gap between the first contact 140 and the second contact 150 of the fixed contact 120 is increased, namely the clamping degree between the moving contact 130 and the fixed contact 120 is reduced, and maintenance is needed; if the distance is not greater than the distance threshold, it indicates that the gap between the first contact plate 140 and the second contact plate 150 of the fixed contact 120 is not increased, that is, the clamping degree between the moving contact 130 and the fixed contact 120 is not reduced, and maintenance is not required; the whole monitoring process can be automatically performed without manual intervention, and the efficiency is higher.

Further, the first driving part includes a first motor (not shown) and a screw 220; the base 110 is provided with a first slide rail 230; the sliding seat 210 is provided with a sliding groove (not numbered); the first sliding rail 230 is slidably disposed through the first sliding rail 230 in a matching manner; the screw 220 is rotatably disposed on the base 110, and the screw 220 is parallel to the extending direction of the first sliding rail 230; the screw rod 220 and the first sliding rail 230 are both positioned on one side of the fixed contact 120, which is away from the moving contact 130; the sliding seat 210 is provided with a threaded hole, and the screw rod 220 is matched and screwed in the threaded hole (not shown); the first motor is used for driving the screw rod 220 to rotate so as to drive the sliding seat 210 to slide along the extending direction of the first sliding rail 230; the extending direction of the first sliding rail 230 is parallel to the arrangement direction of the fixed contacts 120. Through the technical scheme, the structure and the function of the first driving part are perfected.

Meanwhile, the second driving part includes a second motor (not shown), a rotation shaft 580, a first gear 590, and a second gear (not shown); the rotating seat 250 includes a first support plate 180; the sliding seat 210 is provided with a supporting seat 240; the rotating shaft 580 is rotatably arranged through the supporting seat 240; the rotating shaft 580 is parallel to the extending direction of the first sliding rail 230; the first support plate 180 is connected to one end of the rotation shaft 580; a first gear 590 is coaxially connected to one end of the rotation shaft 580 remote from the first support plate 180; the second motor is arranged on the supporting seat 240; the output shaft of the second motor is coaxially connected with a second gear; the first gear 590 is engaged with the second gear; the rotating base 250 can rotate to a first position and a second position; when the rotating base 250 is in the first position, the first contact 160 and the second contact 170 extend between the first contact 140 and the second contact 150 (as shown in fig. 1, that is, when the rotating base 250 is in the first position, the clamping degree of the fixed contact 120 can be detected); when the rotating base 250 is in the second position, the first contact 160 and the second contact 170 do not extend between the first contact 140 and the second contact 150 (when the isolating switch is normally engaged, the rotating base 250 is in the second position). Through the technical scheme, the structure and the function of the second driving part are perfected.

In addition, the rotating base 250 further includes a second support plate 190 and a connection rod 430; the connection rod 430 is vertically connected to the first support plate 180, and one end of the connection rod 430, which is far away from the first support plate 180, is vertically connected to the second support plate 190; the first support plate 180 is parallel to the second support plate 190; the first contact 160 and the second contact 170 are both slidably connected to the connecting rod 430; the second support plate 190 is vertically connected with a first contact plate 330 and a second contact plate 340, respectively; the first contact plate 330 is perpendicular to the second contact plate 340; the connection bars 430 are parallel to the first contact plate 330 and the contact plate, respectively; the diagnostic assembly further includes a fixing member for fixing the rotary seat 250.

Specifically, the fixing member includes a fixing plate 420, a telescopic link 390, and a first spring 380; the base 110 is provided with a connection plate 410; the telescopic link 390 is slidably arranged through the connecting plate 410; the telescopic link 390 is perpendicular to the connecting rod 430; the fixed plate 420 is vertically connected to one end of the telescopic link 390 away from the sliding seat 210; the fixing plate 420 is parallel to the connection rod 430; the first spring 380 is sleeved on the telescopic link 390, one end of the first spring 380 is connected with the fixed plate 420, the other end of the first spring 380 is connected with the connecting plate 410, and the first spring 380 is always in a compressed state; the elastic force of the first spring 380 enables the fixing plate 420 to abut against the first contact plate 330 or the second contact plate 340; when the rotating seat 250 is at the first position, the fixed plate 420 abuts against the first contact plate 330; when the rotating base 250 is at the second position, the fixing plate 420 abuts against the second contact plate 340.

That is, when the rotation seat 250 is rotated to the first position and the position is required to be fixed, the second support plate 190 can be restricted by the abutment of the fixing plate 420 and the first contact plate 330, and the position of the rotation seat 250 can be further fixed.

Meanwhile, the fixing part further includes a first cover plate 260, a first cover cylinder 270, a second spring 290, a first electromagnet 280, a first lock lever 310, and a first shutter 320; the first cover plate 260 is disposed on the first contact plate 330, and a predetermined distance (e.g., 5 cm) is maintained between the first cover plate 260 and the first contact plate 330; when the rotating base 250 is in the first position, the first cover plate 260 is located on a side of the first contact plate 330 facing away from the base 110; the first cover cylinder 270 is embedded in the first cover plate 260; the first lock lever 310 is slidably embedded in the first cover cylinder 270; the first locking bar 310 is perpendicular to the first contact plate 330; the first baffle 320 is sleeved on the first lock rod 310; the first baffle 320 is located between the first shroud 270 and the first contact plate 330; the fixed plate 420 is provided with a first through hole 360, and the telescopic link 390 is axially provided with a through groove 370; the first contact plate 330 is provided with a second through hole 350; the first through hole 360 and the through slot 370 are diametrically opposed; when the rotating base 250 is at the first position (when the first contact plate 330 is parallel to the fixed plate 420), the first through hole 360 and the second through hole 350 are opposite; the inner diameters of the first through hole 360 and the second through hole 350 are identical, and the inner diameter of the first through hole 360 is larger than the inner diameter of the through groove 370; the end of the first locking bar 310 far away from the first cover cylinder 270 is formed with a rounded head, the outer diameter of the first locking bar 310 is smaller than the inner diameter of the through groove 370, and the difference between the inner diameter of the first locking bar 310 and the inner diameter of the through groove 370 is smaller than a preset value (for example, 1 mm), so that the locking and fixing effects can be improved.

The first electromagnet 280 is provided at the inner bottom of the first casing 270; the first electromagnet 280 is used for attracting the first lock lever 310; the second spring 290 is sleeved on the first lock rod 310; one end of the second spring 290 is connected to the first cover cylinder 270, the other end of the second spring 290 is connected to the first baffle 320, the first spring 380 is always in a compressed state, and the elastic force of the first spring 380 enables the first baffle 320 to abut against the first contact plate 330; when the first baffle 320 abuts against the first contact plate 330, the first lock rod 310 sequentially passes through the second through hole 350, the first through hole 360 and the through slot 370; when the first electromagnet 280 engages the first lock lever 310, the first lock lever 310 no longer protrudes out of the second through hole 350.

Through the above technical solution, the structure and function of the fixing component are further improved, when the rotating seat 250 rotates to the first position to fix the position (at this time, the first electromagnet 280 attracts the first lock rod 310, i.e. the first lock rod 310 does not extend out of the second through hole 350), the fixing plate 420 is abutted against the first contact plate 330 under the action of the first spring 380, then the first electromagnet 280 is controlled to lose electricity, under the action of the second spring 290, the first lock rod 310 moves towards the direction approaching to the fixing plate 420, passes through the second through hole 350 and the first through hole 360, and finally extends into the through groove 370, so as to realize the locking function, and prevent the rotating seat 250 from rotating under the action of external force; if the rotating base 250 needs to be rotated to the second position, the first electromagnet 280 is activated again to attract the first lock rod 310, the first lock rod 310 is retracted into the second through hole 350, the rotation of the rotating base 250 is not limited any more, and the fixing plate 420 is lowered during the rotation of the rotating base 250, so as not to interfere with the normal rotation of the rotating base 250.

Similarly, the fixing part further includes a second cover plate 610, a second cover cylinder, a third spring, a second electromagnet, a second lock lever, and a second shutter; the second cover plate 610 is disposed on the second contact plate 340, and a predetermined distance (e.g., 5 cm) is maintained between the second cover plate 610 and the second contact plate 340; when the rotating base 250 is in the second position, the second cover plate 610 is located on a side of the second contact plate 340 facing away from the base 110; the second cover cylinder is embedded in the second cover plate 610; the second lock rod is embedded in the second cover cylinder in a sliding manner; the second lock bar is perpendicular to the second contact plate 340; the second baffle is sleeved on the second lock rod; the second baffle is located between the second shroud and the second contact plate 340; the second contact plate 340 is provided with a third through hole; when the rotating seat 250 is at the second position, the third through hole is opposite to the first through hole 360; the third through hole and the first through hole 360 have the same inner diameter; the end of the second locking bar far away from the second cover cylinder is provided with a round head, the outer diameter of the second locking bar is smaller than the inner diameter of the through groove 370, and the difference value between the inner diameter of the second locking bar and the inner diameter of the through groove 370 is smaller than a preset value (for example, 1 mm).

The inner bottom of the second cover cylinder is provided with a second electromagnet; the second electromagnet is used for attracting the second lock rod; the third spring is sleeved on the second lock rod; one end of the third spring is connected to the second cover cylinder, the other end of the third spring is connected to the second baffle, the third spring is always in a compressed state, and the elasticity of the third spring enables the second baffle to be abutted against the second contact plate 340; when the second baffle abuts against the second contact plate 340, the second lock rod sequentially penetrates through the third through hole, the first through hole 360 and the through slot 370; when the second electromagnet attracts the second lock rod, the second lock rod does not extend out of the third through hole any more.

Through the above technical solution, the structure and function of the fixing component are further improved, when the rotating seat 250 rotates to the second position to be fixed (at this time, the second electromagnet attracts the second lock rod, i.e. the second lock rod does not extend out of the third through hole), the fixing plate 420 is abutted against the second contact plate 340 under the action of the first spring 380, then the second electromagnet is controlled to lose electricity, under the action of the third spring, the second lock rod moves towards the direction close to the fixing plate 420, passes through the third through hole and the first through hole 360, and finally extends into the through groove 370, so as to realize the locking function, and prevent the rotating seat 250 from rotating under the action of external force; if the rotating seat 250 needs to rotate to the first position, the second electromagnet is started again to attract the second lock rod, the second lock rod is retracted into the third through hole, the rotation of the rotating seat 250 is not limited any more, and the fixing plate 420 descends in the rotating process of the rotating seat 250, so that the normal rotation of the rotating seat 250 is not interfered.

In addition, the diagnostic assembly further includes a first sled 440 and a second sled 450; first sleeve 460 is provided on first slider 440; the first sleeve 460 is slidably sleeved on the connecting rod 430; the cross section of the connection rod 430 is rectangular (thus, the first and second sliding plates 440 and 450 can be prevented from rotating during sliding); the second slider 450 is provided with a second sleeve 470 therethrough; the second sleeve 470 is slidably sleeved on the connecting rod 430; the first and second sliding plates 440 and 450 are parallel to each other and are diametrically opposed; the first contact 160 is connected to the first sliding plate 440, and the first contact 160 is parallel to the first sliding plate 440; the second contact 170 is connected to the second slider 450, and the second contact 170 is parallel to the second slider 450; the distance between the first slider 440 and the second slider 450 is greater than the distance between the first contact 160 and the second contact 170; the infrared distance sensor 480 is disposed at a side of the first sliding plate 440 facing the second sliding plate 450; an infrared distance sensor 480 is used to detect the distance between first sled 440 and second sled 450.

Specifically, the distance between the first sliding plate 440 and the second sliding plate 450 is denoted as a first distance, the distance between the first contact 160 and the second contact 170 is denoted as a second distance, the difference between the first distance and the second distance is denoted as a constant, the second distance can be calculated based on the first distance, and the distance between the first contact 140 and the second contact 150 is obtained based on the second distance (the sum of the second distance and the thicknesses of the first contact 160 and the second contact 170 is the distance between the first contact 140 and the second contact 150).

Meanwhile, the diagnostic assembly further includes a fourth spring 620 and a fifth spring 630; one end of the fourth spring 620 is connected to the first sliding plate 440, and the other end of the fourth spring 620 is connected to the first supporting plate 180; one end of the fifth spring 630 is connected to the second slider 450, and the other end of the fifth spring 630 is connected to the second support plate 190. The elastic forces of the fourth spring 620 and the fifth spring 630 move the first contact 160 and the second contact 170 away from each other, so that the first contact 160 abuts the first contact 140 and the second contact 170 abuts the second contact 150, so that the infrared distance sensor 480 detects the distance between the first contact 140 and the second contact 150.

Specifically, the diagnostic assembly further includes a rope 520, a first sheave 490, a second sheave 510, a third electromagnet 570, and a slider 560; the first support plate 180 is provided with a second slide rail 550; the extending direction of the second sliding rail 550 is perpendicular to the connecting shaft; the sliding block 560 is slidably sleeved on the second sliding rail 550; the third electromagnet 570 is disposed on the first support plate 180; the third electromagnet 570 is used for attracting the slider 560; the primary sheave 490 is rotatably disposed to the primary support plate 180; the second sheave 510 is rotatably disposed at the second support plate 190; the rotational axis of the primary sheave 490 is parallel to the rotational axis of the secondary sheave 510; the rotational axis of the primary sheave 490 is parallel to the primary support plate 180.

The first sliding plate 440 is provided with a fourth through hole 540; the second slider 450 is provided with a fifth through hole 530; one end of the rope 520 is connected to the first sliding plate 440, sequentially passes through the fifth through holes 530, then winds around the second grooved wheel 510, then fixedly passes through the second sliding plate 450, then passes through the fourth through holes 540, then winds around the first grooved wheel 490 and is connected to the sliding block 560; when the third electromagnet 570 attracts the slider 560, the first contact 160 contacts the second contact 170.

When the rotating base 250 is at the second position (i.e. the detection is not started), the third electromagnet 570 attracts the slider 560, and at this time, the first contact 160 and the second contact 170 are contacted with each other by the pulling action of the rope 520, so that the first contact 160 and the second contact 170 extend into the gap between the first contact 140 and the second contact 150 during the rotation of the rotating base 250 to the first position; when the rotating base 250 is at the first position, the third electromagnet 570 is de-energized, and the first contact 160 and the second contact 170 are separated from each other under the action of the fourth spring 620 and the fifth spring 630, so that the first contact 160 abuts against the first contact 140, the second contact 170 abuts against the second contact 150, and then the infrared distance sensor 480 is activated to detect the distance between the first contact 140 and the second contact 150.

A first stopper (not shown) is provided at a side of the first sliding plate 440 facing the first support plate 180; the elastic force of the fourth spring 620 can make the first stopper abut against the first support plate 180; a second stopper (not shown) is provided at a side of the second slider 450 facing the second support plate 190; the elastic force of the fifth spring 630 enables the second stopper to abut against the second support plate 190. By providing the first stopper and the second stopper, the first sliding plate 440 can be prevented from colliding with the first sheave 490, and the second sliding plate 450 can be prevented from colliding with the second sheave 510.

In addition, the diagnosis component also comprises a processing module (such as a singlechip), a communication module and a management terminal; the processing module is in communication connection with the management terminal based on the communication module; the infrared distance sensor 480 is communicatively coupled to the processing module; the processing module is configured to send the distance between the first touch pad 140 and the second touch pad 150 to the management terminal through the communication module.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (10)

1. The fault diagnosis device for the high-voltage isolating switch is characterized by comprising an isolating switch body and a diagnosis assembly; the isolating switch body comprises a base, a fixed contact and a moving contact; the number of the fixed contacts and the number of the movable contacts are multiple, and the fixed contacts and the movable contacts are in one-to-one correspondence; the fixed contact comprises a first contact plate and a second contact plate which are parallel to each other and are opposite to each other; the diagnosis component comprises a sliding seat, a first driving part, a rotating seat, a second driving part, a first contact piece, a second contact piece and an infrared distance sensor; the sliding seat is arranged on the base in a sliding manner; the rotating seat is rotatably arranged on the sliding seat; the first contact piece and the second contact piece are arranged on the rotating seat, and are parallel and opposite to each other; the first driving component is used for driving the sliding seat to translate on the base so as to enable the sliding seat to be close to each fixed contact; the second driving part is used for driving the rotating seat to rotate relative to the sliding seat so that the first contact piece and the second contact piece extend into the space between the first contact piece and the second contact piece; the first contact piece is used for abutting the first contact plate, and the second contact piece is used for abutting the second contact plate; the infrared distance sensor is configured to detect a distance between the first touch plate and the second touch plate based on the first touch plate and the second touch plate.

2. The high voltage isolator fault diagnosis apparatus according to claim 1, wherein the first driving means comprises a first motor and a screw; the base is provided with a first sliding rail; the sliding seat is provided with a sliding groove; the first sliding rail is matched with the first sliding rail to slide and penetrate through the first sliding rail; the screw rod is rotatably arranged on the base, and is parallel to the extending direction of the first sliding rail; the screw rod and the first sliding rail are both positioned at one side of the fixed contact, which is away from the moving contact; the sliding seat is provided with a threaded hole, and the screw rod is matched and screwed in the threaded hole; the first motor is used for driving the screw rod to rotate so as to drive the sliding seat to slide along the extending direction of the first sliding rail; the extending direction of the first sliding rail is parallel to the arrangement direction of the fixed contacts.

3. The high voltage isolator fault diagnosis apparatus according to claim 2, wherein the second driving means comprises a second motor, a rotating shaft, a first gear and a second gear; the rotating seat comprises a first supporting plate; the sliding seat is provided with a supporting seat; the rotating shaft is rotatably arranged on the supporting seat in a penetrating manner; the rotating shaft is parallel to the extending direction of the first sliding rail; the first supporting plate is connected to one end of the rotating shaft; one end of the rotating shaft, which is far away from the first supporting plate, is coaxially connected with the first gear; the second motor is arranged on the supporting seat; the output shaft of the second motor is coaxially connected with the second gear; the first gear is meshed with the second gear; the rotating seat can rotate to a first position and a second position; when the rotating seat is positioned at a first position, the first contact piece and the second contact piece extend into the space between the first contact plate and the second contact plate; when the rotating seat is at the second position, the first contact piece and the second contact piece do not extend between the first contact plate and the second contact plate.

4. A high voltage isolator fault diagnosis apparatus according to claim 3, wherein the rotating base further comprises a second support plate and a connecting rod; the connecting rod is vertically connected with the first supporting plate, and one end, far away from the first supporting plate, of the connecting rod is vertically connected with the second supporting plate; the first support plate is parallel to the second support plate; the first contact piece and the second contact piece are both connected to the connecting rod in a sliding manner; the second supporting plate is vertically connected with a first contact plate and a second contact plate respectively; the first contact plate is perpendicular to the second contact plate; the connecting rods are respectively parallel to the first contact plate and the contact plate; the diagnostic assembly further includes a securing member for securing the rotatable mount.

5. The high voltage isolator fault diagnosis apparatus according to claim 4, wherein the fixing member comprises a fixing plate, a telescopic rod and a first spring; the base is provided with a connecting plate; the telescopic rod is arranged in the connecting plate in a sliding penetrating way; the telescopic rod is perpendicular to the connecting rod; the fixed plate is vertically connected with one end of the telescopic rod, which is far away from the sliding seat; the fixed plate is parallel to the connecting rod; the first spring is sleeved on the telescopic rod, one end of the first spring is connected with the fixed plate, the other end of the first spring is connected with the connecting plate, and the first spring is always in a compressed state; the elastic force of the first spring enables the fixed plate to be abutted against the first contact plate or the second contact plate; when the rotating seat is at a first position, the fixed plate is abutted against the first contact plate; when the rotating seat is at the second position, the fixed plate is abutted against the second contact plate.

6. The high voltage isolator fault diagnosis apparatus according to claim 5, wherein the fixing member further comprises a first cover plate, a first cover cylinder, a second spring, a first electromagnet, a first lock lever and a first shutter; the first cover plate is arranged on the first contact plate, and a preset distance is kept between the first cover plate and the first contact plate; when the rotating seat is at a first position, the first cover plate is positioned on one side of the first contact plate, which is away from the base; the first cover cylinder is embedded in the first cover plate; the first lock rod is embedded in the first cover cylinder in a sliding manner; the first lock rod is perpendicular to the first contact plate; the first baffle plate is sleeved on the first lock rod; the first baffle is positioned between the first cover cylinder and the first contact plate; the fixed plate is provided with a first through hole, and the telescopic rod is axially provided with a through groove; the first contact plate is provided with a second through hole; the first through hole is opposite to the through groove; when the rotating seat is positioned at a first position, the first through hole and the second through hole are opposite; the inner diameters of the first through hole and the second through hole are consistent, and the inner diameter of the first through hole is larger than the inner diameter of the through groove; a round head is formed at one end, far away from the first cover cylinder, of the first lock rod, the outer diameter of the first lock rod is smaller than the inner diameter of the through groove, and the difference value between the inner diameter of the first lock rod and the inner diameter of the through groove is smaller than a preset value;

The first electromagnet is arranged at the inner bottom of the first cover cylinder; the first electromagnet is used for attracting the first lock rod; the second spring is sleeved on the first lock rod; one end of the second spring is connected with the first cover cylinder, the other end of the second spring is connected with the first baffle plate, the first spring is always in a compressed state, and the elastic force of the first spring enables the first baffle plate to be abutted against the first contact plate; when the first baffle is abutted against the first contact plate, the first lock rod sequentially penetrates through the second through hole, the first through hole and the through groove; when the first electromagnet is attracted to the first lock rod, the first lock rod does not extend out of the second through hole any more.

7. The high voltage isolator fault diagnosis apparatus according to claim 6, wherein the fixing member further comprises a second cover plate, a second cover cylinder, a third spring, a second electromagnet, a second lock lever, and a second shutter; the second cover plate is arranged on the second contact plate, and a preset distance is kept between the second cover plate and the second contact plate; when the rotating seat is at the second position, the second cover plate is positioned on one side of the second contact plate, which is away from the base; the second cover cylinder is embedded in the second cover plate; the second lock rod is embedded in the second cover cylinder in a sliding manner; the second lock rod is perpendicular to the second contact plate; the second baffle is sleeved on the second lock rod; the second baffle is positioned between the second cover cylinder and the second contact plate; the second contact plate is provided with a third through hole; when the rotating seat is positioned at the second position, the third through hole is opposite to the first through hole; the inner diameters of the third through hole and the first through hole are consistent; a round head is formed at one end, far away from the second cover cylinder, of the second lock rod, the outer diameter of the second lock rod is smaller than the inner diameter of the through groove, and the difference value between the inner diameter of the second lock rod and the inner diameter of the through groove is smaller than a preset value;

The second electromagnet is arranged at the inner bottom of the second cover cylinder; the second electromagnet is used for attracting the second lock rod; the third spring is sleeved on the second lock rod; one end of the third spring is connected with the second cover cylinder, the other end of the third spring is connected with the second baffle plate, the third spring is always in a compressed state, and the second baffle plate is abutted against the second contact plate by the elastic force of the third spring; when the second baffle is abutted against the second contact plate, the second lock rod sequentially penetrates through the third through hole, the first through hole and the through groove; when the second electromagnet is attracted to the second lock rod, the second lock rod does not extend out of the third through hole any more.

8. The high voltage isolator fault diagnosis device according to claim 4, wherein the diagnosis assembly further comprises a first slide plate and a second slide plate; the first sliding plate is provided with a first sleeve in a penetrating way; the first sleeve is sleeved on the connecting rod in a sliding way; the cross section of the connecting rod is rectangular; the second sliding plate is provided with a second sleeve in a penetrating way; the second sleeve is sleeved on the connecting rod in a sliding way; the first sliding plate and the second sliding plate are parallel to each other and are opposite to each other; the first contact piece is connected to the first sliding plate and is parallel to the first sliding plate; the second contact piece is connected to the second sliding plate and is parallel to the second sliding plate; the distance between the first sliding plate and the second sliding plate is larger than the distance between the first contact piece and the second contact piece; the infrared distance sensor is arranged on one side of the first sliding plate, which faces the second sliding plate; the infrared distance sensor is used for detecting the distance between the first sliding plate and the second sliding plate.

9. The high voltage isolator fault diagnosis apparatus according to claim 8, wherein the diagnosis assembly further comprises a fourth spring and a fifth spring; one end of the fourth spring is connected to the first sliding plate, and the other end of the fourth spring is connected to the first supporting plate; one end of the fifth spring is connected with the second sliding plate, and the other end of the fifth spring is connected with the second supporting plate.

10. The high voltage isolator fault diagnosis apparatus of claim 9, wherein the diagnostic assembly further comprises a rope, a first sheave, a second sheave, a third electromagnet, and a slider; the first supporting plate is provided with a second sliding rail; the extending direction of the second sliding rail is perpendicular to the connecting shaft; the sliding block is sleeved on the second sliding rail in a sliding way; the third electromagnet is arranged on the first supporting plate; the third electromagnet is used for attracting the sliding block; the first sheave is rotatably arranged on the first supporting plate; the second sheave is rotatably arranged on the second supporting plate; the rotation axis of the first sheave is parallel to the rotation axis of the second sheave; the rotation axis of the first sheave is parallel to the first support plate;

The first sliding plate is provided with a fourth through hole; the second sliding plate is provided with a fifth through hole; one end of the rope is connected to the first sliding plate, sequentially penetrates through the fifth through hole, then winds around the second grooved wheel, fixedly penetrates through the second sliding plate, penetrates through the fourth through hole, winds around the first grooved wheel and is connected to the sliding block; when the third electromagnet is attracted to the sliding block, the first contact piece is in contact with the second contact piece in a fitting mode.