CN115453298A

CN115453298A - Partial discharge array detector

Info

Publication number: CN115453298A
Application number: CN202211248866.5A
Authority: CN
Inventors: 陈剑; 吴海腾; 陈如申; 王晓青; 黎勇跃
Original assignee: Zhejiang University ZJU; Hangzhou Shenhao Technology Co Ltd
Current assignee: Zhejiang University ZJU; Hangzhou Shenhao Technology Co Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2022-12-09
Anticipated expiration: 2042-10-12
Also published as: CN115453298B

Abstract

The invention belongs to the technical field of partial discharge detection devices, and discloses a partial discharge array detector which comprises a shell and a plurality of probes, wherein the probes are connected in the shell in a sliding manner; a material pipe is fixedly connected in the shell, the front end of the shell is connected with a smearing pipe in a sliding manner, and a unidirectional pump is arranged in the shell; a driving pipe is rotationally connected in the shell; the two sides of each probe in the shell are rotationally connected with a transportation synchronous belt; a driving rod is connected inside the shell in a sliding manner; the invention can realize the taking of the couplant, the smearing of the couplant and the sending out of the probe smeared with the couplant only through a mechanical structure.

Description

Partial discharge array detector

Technical Field

The invention belongs to the technical field of partial discharge detection devices, and particularly relates to a partial discharge array detector.

Background

Chinese patent document No. CN109239556B discloses an automatic smearing mechanism for a coupling agent for partial discharge detection, belongs to the technical field of partial discharge detection devices, and is used for solving the problem of low working efficiency caused by manually smearing the coupling agent in the existing partial discharge detection technology. The device comprises a fixed plate, wherein a guide rail is arranged at the lower end of the fixed plate, a slide block is connected at the lower end of the guide rail, a sliding seat is connected at the lower end of the slide block, a first driving unit is connected with the sliding seat, an air pump, a couplant container, a support and a partial discharge fixing seat are arranged at the lower end of the sliding seat, the air pump and the couplant container are mutually connected through an air pipe, a couplant conveying pipe is connected between the couplant container and the support, the couplant conveying pipe penetrates through the support and then is connected with a couplant head, the couplant head is provided with a discharge port, the support and the partial discharge fixing seat are arranged side by side, the partial discharge fixing seat is rotatably connected with a partial discharge assembly, a partial discharge detection head is arranged at one end of the partial discharge assembly, and the partial discharge assembly is connected with a second driving unit.

Above-mentioned patent is in the use, takes and scribbles the couplant and all need a motor to drive, increases the cost.

Chinese patent document No. CN205193219U discloses a contact type ultrasonic partial discharge detection device for high-voltage environment, which includes: waveguide tube, ultrasonic sensor, sensor base, locking piece and insulating flexible guide arm, ultrasonic sensor is fixed in on the sensor base, the waveguide tube passes through locking piece zonulae occludens in ultrasonic sensor is last, insulating flexible guide arm fixed connection in on the sensor base. The utility model discloses can help patrolling and examining the accurate circuit fault hidden danger of finding, the emergence of the malignant trouble of prevention has avoided the unnecessary power failure, has improved the reliability of power supply, has also improved patrolling and examining personnel work efficiency simultaneously and has reduced patrolling and examining personnel intensity of labour. The utility model discloses a waveguide pipe carries out the ultrasonic wave office of contact and puts the detection, has numerous advantages such as high efficiency, high sensitivity, low decay, in addition, adopts insulating flexible guide arm, can increase staff and high-tension apparatus's distance, guarantees staff's safety.

Above-mentioned patent is in the use, and the sound signal of only gathering the single position carries out the judgement of problem position, and the position that goes wrong is difficult for locking, and the testing result is influenced by the accident easily simultaneously.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the partial discharge array detector for automatically coating the couplant can realize the taking of the couplant, the coating of the couplant and the sending-out of a probe which has coated the couplant only through a mechanical structure.

In order to realize the purpose of the invention, the following technical scheme is adopted to realize the purpose: a partial discharge array detector comprises a shell, a plurality of probes which are connected in the shell in a sliding way and can be magnetically attracted on a detected instrument; a material pipe for storing a coupling agent is fixedly connected in the shell, the front end of the shell is slidably connected with an application pipe capable of applying the coupling agent to the front end of the probe, and a one-way pump capable of pumping the coupling agent in the material pipe and conveying the coupling agent to the application pipe is arranged in the shell; a driving pipe for driving the one-way pump to operate is rotationally connected in the shell; the driving pipe is in one-way transmission connection with the smearing pipe.

The two sides of each probe in the shell are rotatably connected with a conveying synchronous belt for driving each probe to move; a driving rod in one-way transmission connection with the transportation synchronous belt is connected in the shell in a sliding manner; the driving rod is in transmission connection with the driving pipe.

When the driving pipe rotates forwards, the couplant in the one-way pump is conveyed into the smearing pipe, and the smearing pipe slides to enable the couplant to be evenly smeared on the frontmost probe.

When the driving pipe rotates reversely, the one-way pump pumps the couplant in the feed pipe, the probes synchronously move forwards, and the probe at the forefront is pushed out.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a partial discharge array detector, which can automatically and uniformly coat a coupling agent before a probe is moved out, does not need manual coating, does not add a new operation step, can be quickly recovered after the probe is used, is convenient and labor-saving, and can more accurately judge sounding positions by detecting a plurality of probes compared with the traditional single-probe partial discharge detector.

Further: on one hand, the driving pipe is arranged, the transmission assembly is arranged between the driving pipe and the smearing pipe, and the driving pipe can directly drive the one-way pump to work, so that the driving pipe supplements the coupling agent in forward rotation, and transports the coupling agent to the smearing pipe in reverse rotation and evenly smears the coupling agent on the probe; specifically, the one-way pump consists of an inner cylinder and an outer cylinder, when the outer cylinder moves backwards, the couplant in the outer cylinder is extruded out through a one-way valve of the outer cylinder, and when the outer cylinder moves forwards, the couplant in the inner cylinder is extruded out into the outer cylinder.

On the other hand, the invention is provided with the trigger, when the trigger is fixed with the driving rod, the pulling of the trigger drives the probe to move out, the rear take-up reel stores power and drives the driving pipe to rotate, when the trigger is fixed with the unlocking rod, the pulling of the trigger drives the take-up reel to rotate, and the corresponding probe is recovered.

Drawings

Fig. 1 is a diagram of the working state of the present invention.

Fig. 2 is a schematic sectional view showing the structure of each probe of the present invention when it is housed in the housing.

FIG. 3 is a schematic sectional view showing the structure of the probe according to the present invention when a coupling agent is applied to the front end of the probe.

Fig. 4 is a schematic sectional view showing the structure of the probe coated with the coupling agent of the present invention when the probe is discharged.

FIG. 5 is a schematic sectional view showing the probe recovery according to the present invention.

Fig. 6 is a sectional structural view of the housing of the present invention.

FIG. 7 is an exploded view of the trigger, the switch frame and the switch rod of the present invention.

1. A housing; 10. an operation screen; 11. a material storage shell; 12. placing a wire way; 131. an adjustment groove; 132. a receiving groove; 14. a straight chute; 15. a probe receiving cavity; 2. a probe; 20. an electric wire; 21. a delivery wheel; 211. a synchronizing gear; 22. conveying a synchronous belt; 23. synchronous belt reversing gear; 24. a ratchet wheel is sent out; 25. recovering the ratchet wheel; 31. a take-up reel; 311. a coil spring; 312. a power storage ratchet wheel; 32. a power storage pawl; 321. a driven lever; 322. a pawl torsion spring; 33. unlocking the slide block; 331. unlocking the inclined plane; 332. a stopper groove; 333. a top butting surface; 34. unlocking the driven wheel; 35. unlocking the synchronous belt; 351. unlocking the push block; 352. unlocking the arc surface; 36. unlocking the driving wheel; 361. unlocking the ratchet wheel; 41. a material pipe; 42. an inner barrel; 421. an inner check valve; 43. an outer cylinder; 431. an outer check valve; 432. a driven strut; 433. a discharge pipe; 51. coating a pipe; 511. coating ports; 512. a feed pipe; 52. sealing the sliding rod; 521. adjusting the sliding column; 53. lifting the pawl strip; 54. a lifting ratchet wheel; 541. a polished surface; 55. a tension spring; 61. a drive tube; 611. an outer spiral groove; 612. an inner spiral groove; 62. a drive rod; 621. a drive strut; 622. driving the pawl bar; 623. driving the synchronization slot; 7. an unlocking lever; 71. recovering the pawl strip; 72. a recovery synchronization tank; 73. unlocking the pawl bar; 8. a trigger; 81. a compression spring; 82. a synchronization slot; 91. a stop lever; 912. switching the chute; 92. a switching frame; 921. a switch lever; 922. switching the sliding columns; 923. switching the sliding cavity; 924. a slide bar chute; 93. switching the sliding rods; 931. driving a synchronization block; 932. recovering the synchronous blocks; 933. a slide bar and a slide column.

Detailed Description

Referring to fig. 1 to 7, the partial discharge array detector of this embodiment includes a housing 1, and a plurality of probes 2 slidably connected to the housing 1 along a front-back direction and capable of being magnetically attracted to an apparatus to be detected.

A material pipe 41 for storing a coupling agent is fixedly connected in the shell 1, the front end of the shell 1 is connected with a smearing pipe 51 capable of smearing the coupling agent on the front end of the probe 2 in a vertical sliding manner, and a one-way pump capable of pumping the coupling agent in the material pipe 41 and conveying the coupling agent to the smearing pipe 51 is arranged in the shell 1; a driving pipe 61 for driving the one-way pump to operate is rotatably connected in the shell 1; the driving pipe 61 is in one-way transmission connection with the smearing pipe 51.

The two sides of each probe 2 in the shell 1 are rotatably connected with a conveying synchronous belt 22 for driving each probe 2 to move; a driving rod 62 in one-way transmission connection with the transportation synchronous belt 22 is connected in the shell 1 in a sliding manner; the driving rod 62 is in transmission connection with the driving pipe 61; the lower end of the shell 1 is fixedly connected with a material storage shell 11 for installing the material pipe 41.

When the driving pipe 61 rotates in the forward direction, the couplant in the one-way pump is delivered into the smearing pipe 51, and the smearing pipe 51 slides to enable the couplant to be evenly smeared on the head 2 at the forefront.

When the driving pipe 61 rotates reversely, the one-way pump pumps the coupling agent in the material pipe 41, each probe 2 moves forward synchronously, and the frontmost probe 2 is pushed out to be not in contact with the transportation synchronous belt 22.

The partial discharge detector collects signals through the probes and processes the signals to find out the position with problems in the detected instrument, but the detection result of a single probe is sporadically inaccurate, a plurality of probes are used for detecting, and the measurement results among the probes are compared, so that the sporadic occurrence probability can be reduced; in addition, the sounding position in the detected instrument can be more accurately positioned through the time difference of the signals received by the probes, and the possible problems of the detected instrument can be further evaluated.

The couplant needs to be smeared firstly when the probe is placed, manual operation is smeared and only can rely on the feeling, the smearing is not uniform easily, signal collection is affected easily, waste is caused too much, and therefore the mechanical structure is used for automatic smearing, and the waste is avoided when the smearing is uniform.

Take-up reels 31 with the same number as the probes 2 are rotatably connected in the shell 1, and an electric wire 20 is arranged between each probe 2 and the corresponding take-up reel 31; a coil spring 311 for driving the take-up reel 31 to rotate reversely is arranged between the take-up reel 31 and the shell 1; a power storage ratchet wheel 312 is fixedly connected to the center of one end of the take-up reel 31, and a plurality of power storage pawls 32 capable of preventing the corresponding power storage ratchet wheel 312 from reversely rotating are rotatably connected to the housing 1; a plurality of unlocking sliders 33 capable of pushing the corresponding power storage pawls 32 to rotate in a direction away from the power storage ratchet 312 are slidably connected to the housing 1.

An unlocking inclined surface 331 capable of pushing and pushing the power storage pawl 32 to rotate in a direction away from the power storage ratchet 312 is formed on the unlocking slide block 33; a pawl torsion spring 322 for driving the power pawl 32 to rotate towards the direction close to the power ratchet 312 is arranged between the power pawl 32 and the housing 1; a driven rod 321 which is arranged along the radial direction and is abutted against the unlocking inclined plane 331 is formed on the outer wall of one end, close to the rotating shaft, of the power storage pawl 32; an upper abutting surface 333 which can abut against the driven rod 321 is formed at the upper end of the unlocking slider 33.

A probe accommodating cavity 15 for accommodating each probe 2 is formed at the front end of the shell 1; the front end of the shell 1 is positioned at the periphery of the probe accommodating cavity 15 and is formed with wire placing channels 12 which are as many as the probes 2 and used for placing the electric wires 20; each wire placing channel 12 is communicated with the probe containing cavity 15, and the width of the communicated opening is smaller than the diameter of the electric wire 20, so that the electric wire 20 of each probe 2 is in the corresponding wire placing channel 12 and the electric wire 20 cannot fall into the probe containing cavity 15 and be mixed with other electric wires 20 when the probe 2 is moved out.

When the unlocking slider 33 is located at the front limit position, the power storage pawl 32 prevents the power storage ratchet 312 from rotating reversely, the forward movement of the probe 2 moves the electric wire 20, the take-up reel 31 rotates in the forward direction, and the coil spring 311 stores power.

When the unlocking slide block 33 is located at the rear limit position, the driven rod 321 abuts against the upper abutting surface 333, the power storage pawl 32 is kept at a position where it is not in contact with the power storage ratchet 312, the power storage pawl 32 does not prevent the power storage ratchet 312 from rotating in the reverse direction, the take-up reel 31 rotates in the reverse direction under the elastic force of the coil spring 311, and the electric wire 20 is recovered.

Two unlocking driven wheels 34 are rotatably connected to the bottom in the shell 1, an unlocking synchronous belt 35 is rotatably connected between the two unlocking driven wheels 34, and two unlocking push blocks 351 are fixedly connected to the unlocking synchronous belt 35; the two unlocking push blocks 351 are arranged in a centrosymmetric manner; an unlocking arc 352 capable of pushing the unlocking slider 33 is formed on the unlocking push block 351.

An unlocking driving wheel 36 for driving the unlocking synchronous belt 35 to rotate is rotatably connected to the bottom in the shell 1; an unlocking rod 7 which is connected with the unlocking driving wheel 36 in a one-way transmission way is connected to the bottom in the shell 1 in a sliding way along the front and back direction; the unlocking rod 7 is in one-way transmission connection with the conveying synchronous belt 22; the center of the upper end of the unlocking driving wheel 36 is fixedly connected with an unlocking ratchet 361, and the outer wall of the unlocking rod 7 is provided with an unlocking pawl strip 73 which is connected with the unlocking ratchet 361 in a one-way transmission manner.

When the unlocking rod 7 moves to the rear limit position, the unlocking cambered surface 352 pushes one unlocking slide block 33 to move to the rear limit position, the corresponding take-up reel 31 can rotate, and when the unlocking rod 7 moves to the front limit position, the transportation synchronous belt 22 drives each probe 2 to synchronously move backwards.

When the unlocking rod 7 moves between the front limit position and the rear limit position for multiple times, the unlocking push block 351 sequentially pushes the unlocking slide blocks 33, the take-up reel 31 sequentially recovers the corresponding electric wires 20, and the probes 2 are sequentially recovered into the shell 1.

A switching frame 92 is connected to the bottom of the shell 1 in a sliding manner along the left-right direction, and a switching slide rod 93 is connected to the switching frame 92 in a sliding manner along the front-back direction; the left end and the right end of the switching frame 92 are both formed with a switching rod 921 extending out from the outer wall of the shell 1 and capable of driving the switching frame 92 to move.

A trigger 8 is connected to the bottom in the housing 1 in a sliding manner along the front-back direction, and a synchronization slot 82 which is relatively fixed with the switching slide rod 93 in the front-back direction and is connected with the switching slide rod 93 in a sliding manner in the left-right direction is formed at the upper end of the trigger 8; a driving synchronization groove 623 is formed at the lower end of the driving rod 62, and a driving synchronization block 931 capable of being clamped with the driving synchronization groove 623 is formed at the upper end of the switching slide rod 93; the lower end of the unlocking rod 7 is formed with a recovery synchronous groove 72, and the upper end of the switching slide rod 93 is formed with a recovery synchronous block 932 which can be clamped with the recovery synchronous groove 72.

A compression spring 81 for pushing the trigger 8 forward is arranged between the trigger 8 and the housing 1; a switching sliding cavity 923 which is communicated up and down and is connected with the switching sliding rod 93 in a sliding manner is formed in the switching frame 92; all the shaping has the slide bar spout 924 that sets up along the fore-and-aft direction on two inner walls about switching sliding chamber 923, switch the equal shaping in both ends about slide bar 93 have with corresponding slide bar spout 924 sliding connection's slide bar traveller 933.

When the switching frame 92 is located at the left limit position, the driving synchronization block 931 is clamped with the driving synchronization slot 623, the recovery synchronization block 932 is not clamped with the recovery synchronization slot 72, and the driving rod 62 is driven by the movement of the trigger 8.

When switching frame 92 is located right side extreme position, drive synchronizing block 931 with drive synchronizing groove 623 is not the joint, retrieve synchronizing block 932 with retrieve synchronizing groove 72 joint, the removal of trigger 8 drives unblock lever 7 removes.

A left-right through stop groove 332 formed in each unlocking slider 33 in the front-rear direction, and a stop rod 91 slidably connected to each stop groove 332 and slidably connected to the bottom of the housing 1 in the front-rear direction; the upper end of the stop rod 91 is formed with a switching chute 912 which is obliquely arranged, and the lower end of the switching rod 921 is formed with a switching sliding column 922 which is connected with the switching chute 912 in a sliding manner; stop lever 91 is fixed respectively by a horizontal pole and two that set up along the left and right directions the montant that sets up along the fore-and-aft direction at horizontal pole both ends is constituteed, two the upper end of montant all the shaping have switch chute 912, two the lower extreme of switching pole 921 all the shaping have with adjacent switch chute 912 sliding connection switch traveller 922.

When the switching frame 92 is located at the left limit position, the stop lever 91 is located at the front end of the stop groove 332, the unlocking slider 33 cannot slide back and forth, and the power storage pawl 32 is held against the power storage ratchet 312.

When the switching frame 92 is located at the right limit position, the stop lever 91 is located at the rear end of the stop groove 332, and the unlocking slider 33 can slide back and forth.

When the switching frame 92 moves from the right limit position to the left limit position, the stop rod 91 first abuts against the inner wall of the front end of each stop groove 332 to drive each unlocking slider 33 to move forward, and then moves to the front limit position, so that each unlocking slider 33 moves to the front limit position, the driven rod 321 on the power storage pawl 32 does not abut against the upper abutting surface 333, and the power storage pawl 32 rotates to abut against the power storage ratchet wheel 312.

The one-way pump comprises an inner cylinder 42 fixedly connected to the inner bottom of the shell 1 and communicated with the material pipe 41, and an outer cylinder 43 connected to the outer wall of the inner cylinder 42 in a sealing and sliding manner along the front-back direction; an inner one-way valve 421 which is communicated from the inner cylinder 42 to the outer cylinder 43 in one way is formed on the inner wall of the front end of the inner cylinder 42; a feeding pipe 512 is formed on the inner wall of the smearing pipe 51, and a discharging pipe 433 communicated with the feeding pipe 512 is fixedly connected to the front end of the outer cylinder 43; an outer check valve 431 is formed on the inner wall of the front end of the outer tube 43 so as to be communicated from the inside of the outer tube 43 to the inside of the discharge tube 433 in a one-way manner.

When the outer cylinder 43 slides backward, the inner check valve 421 is closed, the volume inside the outer cylinder 43 is reduced, the pressure is increased, the outer check valve 431 is opened, and the couplant inside the outer cylinder 43 is transported into the application pipe 51 through the discharge pipe 433.

When the outer cylinder 43 slides forward, the outer check valve 431 is closed, the volume inside the outer cylinder 43 increases, the pressure decreases, the inner check valve 421 opens, and the couplant in the feed pipe 41 is transported into the outer cylinder 43 through the inner cylinder 42.

A coating port 511 for extruding coupling agent is formed on the inner wall of the coating pipe 51; the front end of the shell 1 is formed with two parallel straight sliding grooves 14 which are arranged along the up-down direction and are connected with the smearing pipe 51 in a sliding way; the inner walls of the two ends of the smearing pipe 51 are connected with a sealing sliding rod 52 used for adjusting the length of the smearing port 511 in a sealing and sliding manner; an adjusting sliding column 521 is formed on the outer wall of one end of each sealing sliding rod 52, which is far away from the smearing pipe 51, two parallel accommodating grooves 132 capable of being slidably connected with the corresponding adjusting sliding column 521 are formed at the front end of the housing 1, which are arranged in the vertical direction, and an arc-shaped adjusting groove 131 capable of being slidably connected with the corresponding adjusting sliding column 521 is formed at the upper end of each accommodating groove 132.

When the adjusting slide column 521 is located in the accommodating groove 132, the two sealing slide rods 52 close the coating opening 511, and the coating tube 51 is located below the probe 2 and does not block the probe 2 from moving out.

When the adjusting slide column 521 is located in the adjusting groove 131, the two sealing slide rods 52 do not close the coating port 511, the coupling agent conveyed into the coating pipe 51 by the one-way pump is extruded to the front end of the probe 2 through the coating port 511, and the length of the coating port 511 which is not closed is just equal to the width of the probe 2 opposite to the coating port 511.

An inner spiral groove 612 which is spirally arranged is formed on the inner wall of the driving pipe 61, and a driving sliding column 621 which is in sliding connection with the inner spiral groove 612 is formed on the outer wall of the driving rod 62; the pitch of the inner helical groove 612 remains unchanged; a driven sliding column 432 is formed on the outer wall of the outer cylinder 43, and an outer spiral groove 611 which is spirally formed on the outer wall of the driving pipe 61; the pitch of the outer spiral groove 611 is gradually decreased from the middle position to both ends.

When the length of the coating port 511 which is not closed increases, the amount of the coupling agent extruded by the one-way pump increases, and when the length of the coating port 511 which is not closed decreases, the amount of the coupling agent extruded by the one-way pump decreases.

Two lifting pawl strips 53 which are parallel to each other and fixedly connected with the smearing pipe 51 are connected to the inner wall of the front side of the shell 1 in a sliding manner along the vertical direction, two lifting ratchet wheels 54 capable of driving the adjacent lifting pawl strips 53 to slide upwards are connected to the inner wall of the front end of the shell 1 in a rotating manner, and a tension spring 55 for driving the corresponding lifting pawl strips 53 to move downwards is arranged between each lifting pawl strip 53 and the shell 1; a lifting synchronous belt is rotationally connected between the two lifting ratchet wheels 54 and the driving pipe 61; a smooth surface 541 without ratchets is formed on the outer wall of the lifting ratchet wheel 54; the pawls of the two lifting pawl strips 53 are arranged on the same side, so that the two lifting ratchet wheels 54 rotating synchronously in the same direction can drive the two lifting pawl strips 53 to slide upwards synchronously.

When the lifting ratchet wheel 54 is in transmission connection with the lifting pawl strip 53, the lifting ratchet wheel 54 rotates to enable the lifting pawl strip 53 to move upwards, the tension spring 55 stretches to store force, when the smooth surface 541 moves to be close to the lifting pawl strip 53, the lifting ratchet wheel 54 is not in transmission connection with the lifting pawl strip 53, and the lifting pawl strip 53 moves downwards under the action of the elastic force of the tension spring 55.

The two sides of the probe 2 in the shell 1 are respectively and rotatably connected with a sending-out wheel 21 for driving the corresponding transportation synchronous belt 22 to operate, the bottom in the shell 1 is rotatably connected with a synchronous belt reversing gear 23 in transmission connection with one sending-out wheel 21 in the two sending-out wheels 21, and a reversing synchronous belt is rotatably connected between the synchronous belt reversing gear 23 and the other sending-out wheel 21 in the two sending-out wheels 21; the sending-out wheel 21 is fixedly connected with a synchronous gear 211 which is in transmission connection with the synchronous belt reversing gear 23.

A coaxially arranged delivery ratchet wheel 24 is fixedly connected below one delivery wheel 21 of the two delivery wheels 21 close to the driving rod 62, and a driving pawl strip 622 in one-way transmission connection with the delivery ratchet wheel 24 is arranged on the outer wall of the driving rod 62.

A coaxially arranged recovery ratchet wheel 25 is fixedly connected to the lower portion of one of the two sending-out wheels 21 close to the unlocking rod 7, and a recovery pawl strip 71 in one-way transmission connection with the recovery ratchet wheel 25 is arranged on the outer wall of the unlocking rod 7.

The direction in which the drive pawl bar 622 rotates the feed-out ratchet 24 is opposite to the direction in which the recovery pawl bar 71 rotates the recovery ratchet 25.

An operation screen 10 with buttons is fixedly connected to the rear end of the shell 1, and each wire 20 is electrically connected with the operation screen 10; the operation panel 10 can process the sound signals collected by the probes 2.

In an initial state, the switching frame 92 is located at a right limit position, the trigger is located at a front limit position, each probe 2 is accommodated in the probe accommodating cavity 15, the front end face of the frontmost probe 2 is flush with the front end face of the shell 1, the electric wires 20 corresponding to each probe 2 are accommodated in different wire accommodating channels 12, and each unlocking slide block 33 is located at a rear limit position.

The couplant needs to be smeared firstly when the probe is placed, manual operation smearing can only depend on feeling, smearing is easy to be uneven, signal collection is easy to be influenced, waste is caused due to excessive smearing, and therefore automatic smearing by using a mechanical structure is guaranteed, and waste is avoided when smearing is even.

When the invention is used, firstly, the switching rod 921 extending out of the shell 1 is pushed leftwards, so that the switching frame 92 moves to the left limit position, and the switching slide rod 93 is driven by the movement of the switching frame 92 to synchronously move leftwards; the movement of the switching frame 92 drives the switching sliding column 922 on the switching frame 92 to move in the switching chute 912, so that the stop rod 91 moves forwards; when the stopper rod 91 moves against the front inner wall of the stopper groove 332, the forward movement of the stopper rod 91 brings the unlocking slider 33 to move forward in synchronization.

When the switching frame 92 moves to the left limit position, the retraction synchronizing block 932 on the switching slide bar 93 is no longer clamped with the retraction synchronizing groove 72 on the unlocking lever 7, the driving synchronizing block 931 on the switching slide bar 93 is clamped with the driving synchronizing groove 623 on the driving lever 62, each unlocking slider 33 moves to the front limit position, the driven lever 321 is not abutted against the upper abutting surface 333 and the unlocking inclined surface 331, and each power storage pawl 32 rotates to abut against the power storage ratchet wheel 312 under the elastic force of the pawl torsion spring 322.

Then, the trigger 8 is pulled, the compression spring 81 contracts and stores the force, the movement of the trigger 8 drives the synchronous groove 82 to move, so that the switching slide rod 93 moves backwards in the switching frame 92, the movement of the switching slide rod 93 drives the driving synchronous block 931 to move, so that the driving rod 62 moves backwards, and the movement of the driving rod 62 drives the driving sliding column 621 to move in the inner spiral groove 612, so that the driving pipe 61 rotates forwards.

The rotation of the driving tube 61 drives the lifting synchronous belt to rotate on one hand, the rotation of the lifting synchronous belt drives the two lifting ratchet wheels 54 to synchronously rotate, at the moment, the smooth surfaces 541 on the lifting ratchet wheels 54 are not close to the lifting pawl strips 53, the rotation of the lifting ratchet wheels 54 drives the lifting pawl strips 53 to upwards slide, the movement of the lifting pawl strips 53 drives the smearing tube 51 to upwards move, the two sealing slide rods 52 in the smearing tube 51 synchronously move, and the tension spring 55 is stretched to store force; when the adjusting slide columns 521 on the sealing slide rods 52 are located in the accommodating grooves 132, the two sealing slide rods 52 close the coating ports 511 on the coating pipe 51, and at this time, the coupling agent in the coating pipe 51 is not extruded; when the adjusting slide column 521 on the sealing slide rod 52 is located in the adjusting groove 131, the sealing slide rod 52 no longer seals the paint opening 511, and the unclosed length on the paint opening 511 is just equal to the width of the probe 2 opposite to the painting tube 51.

On the other hand, the rotation of the driving pipe 61 drives the driven sliding column 432 to move in the outer spiral groove 611, so that the outer cylinder 43 moves backwards relative to the inner cylinder 42, at this time, the inner check valve 421 on the inner cylinder 42 is closed, the volume in the outer cylinder 43 is reduced, the pressure is increased, the outer check valve 431 on the outer cylinder 43 is opened, the couplant in the outer cylinder 43 is extruded into the discharge pipe 433 through the outer check valve 431, then is transported into the smearing pipe 51 through the feed pipe 512, and finally is extruded to the front end of the probe 2 through the smearing opening 511; since the pitch of the external spiral groove 611 outside the driving tube 61 is gradually reduced from the middle to both ends, during the uniform rotation of the driving tube 61, the moving speed of the outer tube 43 is increased and then decreased, and the length of the coating port 511 on the corresponding coating tube 51, which is not closed, is increased and then decreased, so that the coating tube 51 can be uniformly extruded without waste when being coated on the front end surface of the probe 2.

When the trigger 8 moves to the rear limit position, the outer cylinder 43 moves to the rear limit position, the couplant in the outer cylinder 43 is completely squeezed out, the smearing pipe 51 just moves to the upper limit position, the smooth surface 541 on the lifting ratchet wheel 54 is close to the corresponding lifting pawl strip 53, and the lifting pawl strip 53 rapidly moves to the lower limit position under the action of the elastic force of the tension spring 55.

Then, the shell 1 is moved until the probe 2 coated with the coupling agent is adsorbed on the surface of the detected instrument, the trigger 8 is loosened, the trigger 8 moves forward under the action of the elastic force of the compression spring 81, the movement of the trigger 8 drives the driving rod 62 to move forward, the driving tube 61 rotates in reverse direction, at the moment, the driving pawl strip 622 on the driving rod 62 drives the sending-out ratchet 24 to rotate, the rotation of the sending-out ratchet 24 drives the sending-out wheel 21 on one side to rotate, the rotation of the sending-out wheel 21 drives the synchronous gear 211 to rotate so that the synchronous belt reversing gear 23 rotates in reverse direction, and the rotation of the synchronous belt reversing gear 23 drives the reversing synchronous belt to rotate so that the sending-out wheel 21 on the other side rotates; at this time, the rotation directions of the two sending-out wheels 21 are opposite, so that the two corresponding transportation synchronous belts 22 synchronously rotate in opposite directions, and each probe 2 located between the two transportation synchronous belts 22 is driven by the transportation synchronous belts 22 to move forward.

When the trigger 8 moves to the front limit position, the frontmost probe 2 moves out of the probe accommodating cavity 15, the front end of the next probe 2 is flush with the front end surface of the shell 1, the shell 1 can be moved away, and the probe 2 is fixed on the detected instrument; during the fixing process of the probe 2, the probe 2 moves away from the housing 1 to draw out the electric wire 20, the movement of the electric wire 20 drives the take-up reel 31 to rotate in the forward direction, the coil spring 311 twists the power storage, and the power storage pawl 32 prevents the power storage ratchet 312 from rotating in the reverse direction.

In the process, the driving rod 62 moves forward to drive the driving pipe 61 to rotate reversely, the outer cylinder 43 moves forward, the outer check valve 431 is closed at the moment, the volume of the outer cylinder 43 is increased, the pressure intensity is reduced, the inner check valve 421 is opened, and the coupling agent in the inner cylinder 42 is extracted into the outer cylinder 43; when the trigger 8 is moved to the forward limit position, the outer cylinder 43 is moved to the forward limit position, and the outer cylinder 43 is filled with the couplant.

(for the first time, only the trigger 8 is pulled and then released, the movement of the trigger 8 drives the outer cylinder 43 to move to the rear limit position first, the internal air is exhausted, then the outer cylinder moves forwards, the couplant is extracted, in the process, the probe 2 is prevented from moving out, and the transportation synchronous belt 22 rubs with the probe 2)

Repeating the above operations to enable each probe in the shell 1 to be coated with the coupling agent and fixed on the detected instrument, then performing corresponding operations on the operation screen 10, and processing and imaging signals received by each probe 2 by the operation screen 10 to find out the position of the detected instrument with problems; the detection result of a single probe is inaccurate occasionally, a plurality of probes are used for detecting, and the measurement results among the probes are compared, so that the occurrence probability of the occasionally is reduced; in addition, the information can be collected through the probes arranged in the array and processed, and the position where the problem occurs in the detected instrument can be more accurately positioned.

After the use of the probes 2 is completed, the probes 2 need to be collected.

First, the switch bar 921 is pushed to the right so that the switch frame 92 drives the switch slide bar 93 to move to the right limit position, the recovery synchronization block 932 on the switch slide bar 93 is in clamping connection with the recovery synchronization groove 72 on the unlocking bar 7, and the driving synchronization block 931 on the switch slide bar 93 is not in clamping connection with the driving synchronization groove 623 on the driving bar 62.

At this time, the trigger 8 is pulled, the trigger 8 moves backwards to drive the unlocking rod 7 to move backwards synchronously, the unlocking rod 7 moves to drive the unlocking pawl strip 73 to move so that the unlocking ratchet 361 rotates, the unlocking ratchet 361 rotates to drive the unlocking driving wheel 36 to rotate so that the unlocking synchronous belt 35 rotates, and the unlocking synchronous belt 35 rotates to drive the unlocking push block 351 on the unlocking synchronous belt 35 to move; when the unlocking arc 352 on the unlocking push block 351 abuts against the unlocking slide block 33, the unlocking push block 351 continues to move, so that the unlocking slide block 33 moves backwards, the unlocking inclined surface 331 on the unlocking slide block 33 presses upwards to push the driven rod 321 to rotate the power storage pawl 32, and the pawl torsion spring 322 twists and stores power.

When the trigger 8 moves to the rear limit position, the unlocking slide block 33 moves to the rear limit position, the power storage pawl 32 rotates to prevent the power storage ratchet wheel 312 from reversely rotating, at the moment, the take-up reel 31 reversely rotates under the elastic force of the coil spring 311, the corresponding electric wire 20 is stored due to the rotation of the take-up reel 31, at the moment, the shell 1 can move to the front end opening of the corresponding probe 2 and the probe storage cavity 15, and the probe 2 abuts against the transportation synchronous belt 22.

Then, the trigger 8 is released, the trigger 8 drives the unlocking rod 7 to move forward under the action of the elastic force of the compression spring, the unlocking rod 7 moves forward to drive the recovery pawl strip 71 to move so that the recovery ratchet wheel 25 rotates, the rotation of the recovery ratchet wheel 25 drives the sending-out wheels 21 on the two sides to rotate in the reverse direction so that the transportation synchronous belts 22 on the two sides rotate, and the probe 2 is transported into the probe accommodating cavity 15; when the trigger 8 moves to the front limit position, the probe 2 moves to the front end which is flush with the front end of the shell 1, and the front end of the probe 2 and the surface of the detected instrument are cleaned.

The trigger 8 is pulled for multiple times and then loosened, so that the unlocking synchronous belt 35 intermittently rotates, the unlocking push block 351 on the unlocking synchronous belt 35 sequentially drives each unlocking slide block 33 to move to a rear limit position from left to right, and each probe 2 is recovered into the probe containing cavity 15; when all the probes 2 are recovered, the first unlocking push block 351 on the unlocking synchronous belt 35 moves to the initial position of the second unlocking push block 351 after pushing all the unlocking sliders 33, the second unlocking push block 351 moves to the initial position of the first unlocking push block 351, and the second unlocking push block 351 can push each unlocking slider 33 in the next use.

Claims

1. A partial discharge array detector is characterized in that: comprises a shell, a plurality of probes which are connected in the shell in a sliding way and can be magnetically attracted on an instrument to be detected; a material pipe for storing a coupling agent is fixedly connected in the shell, the front end of the shell is slidably connected with an application pipe capable of applying the coupling agent to the front end of the probe, and a one-way pump capable of pumping the coupling agent in the material pipe and conveying the coupling agent to the application pipe is arranged in the shell; a driving pipe for driving the one-way pump to operate is rotationally connected in the shell; the driving pipe is in one-way transmission connection with the smearing pipe; conveying synchronous belts for driving the probes to move are rotatably connected to the two sides of each probe in the shell; a driving rod in one-way transmission connection with the transportation synchronous belt is connected in the shell in a sliding manner; the driving rod is in transmission connection with the driving pipe; when the driving pipe rotates forwards, the couplant in the one-way pump is conveyed into the smearing pipe, and the smearing pipe slides to enable the couplant to be evenly smeared on the frontmost probe; when the driving pipe rotates reversely, the one-way pump pumps the couplant in the feed pipe, the probes synchronously move forwards, and the probe at the forefront is pushed out.

2. The partial discharge array detector of claim 1, wherein: the number of the take-up reels in the shell is the same as that of the probes, and an electric wire is arranged between each probe and the corresponding take-up reel; a coil spring for driving the take-up reel to rotate reversely is arranged between the take-up reel and the shell; the center of one end of the take-up reel is fixedly connected with a power storage ratchet wheel, and a plurality of power storage pawls capable of preventing the corresponding power storage ratchet wheel from reversely rotating are rotatably connected in the shell; a plurality of unlocking slide blocks capable of pushing the corresponding power storage pawls to rotate in the direction far away from the power storage ratchet wheel are connected in the shell in a sliding mode; when the unlocking slide block is positioned at the front limit position, the power storage pawl prevents the power storage ratchet wheel from reversely rotating, the forward movement of the probe enables the electric wire to move, the take-up reel rotates forwards, and the coil spring stores power; when the unlocking slide block is located at the rear limit position, the power accumulating pawl does not prevent the power accumulating ratchet wheel from reversely rotating, the take-up reel reversely rotates under the action of the elastic force of the coil spring, and the electric wire is recovered.

3. The partial discharge array detector of claim 2, wherein: the bottom in the shell is rotatably connected with two unlocking driven wheels, an unlocking synchronous belt is rotatably connected between the two unlocking driven wheels, and an unlocking push block is fixedly connected to the unlocking synchronous belt; an unlocking cambered surface capable of pushing the unlocking sliding block in an extruding manner is formed on the unlocking push block; an unlocking driving wheel for driving the unlocking synchronous belt to rotate is rotatably connected to the bottom in the shell; an unlocking rod in one-way transmission connection with the unlocking driving wheel is connected to the bottom in the shell in a sliding mode along the front-back direction; the unlocking rod is in one-way transmission connection with the conveying synchronous belt; when the unlocking rod moves to the rear limit position, the unlocking cambered surface pushes one unlocking slide block to move to the rear limit position, the corresponding take-up reel can rotate, and when the unlocking rod moves to the front limit position, the transportation synchronous belt drives each probe to synchronously move backwards; when the unlocking rod moves for multiple times between the front limit position and the rear limit position, the unlocking push block sequentially pushes the unlocking slide blocks, the take-up reel sequentially recovers the corresponding electric wires, and the probes are sequentially recovered into the shell.

4. A partial discharge array detector according to claim 3, wherein: the bottom in the shell is connected with a switching frame in a sliding mode along the left-right direction, and the switching frame is connected with a switching slide rod in a sliding mode along the front-back direction; the left end and the right end of the switching frame are both formed with switching rods which extend out of the outer wall of the shell and can drive the switching frame to move; a trigger is connected to the bottom in the shell in a sliding manner along the front-back direction, and a synchronous groove which is relatively fixed to the switching slide rod in the front-back direction and is connected with the switching slide rod in a sliding manner in the left-right direction is formed at the upper end of the trigger; a driving synchronous groove is formed at the lower end of the driving rod, and a driving synchronous block which can be clamped with the driving synchronous groove is formed at the upper end of the switching slide rod; a recovery synchronous groove is formed at the lower end of the unlocking rod, and a recovery synchronous block which can be clamped with the recovery synchronous groove is formed at the upper end of the switching slide rod; when the switching frame is located at the left limit position, the driving synchronous block is clamped with the driving synchronous groove, the recovery synchronous block is not clamped with the recovery synchronous groove, and the driving rod is driven to move by the movement of the trigger; when the switching frame is located the right side extreme position, drive synchronizing block with drive synchronizing groove joint not, retrieve synchronizing block with retrieve synchronizing groove joint, the removal of trigger drives the unblock pole removes.

5. The partial discharge array detector of claim 4, wherein: a left-right through stop groove arranged along the front-rear direction is formed in each unlocking slide block, and a stop rod connected with each stop groove in a sliding manner is connected to the bottom in the shell in a sliding manner along the front-rear direction; the upper end of the stop rod is formed with a switching chute which is obliquely arranged, and the lower end of the switching rod is formed with a switching sliding column which is in sliding connection with the switching chute; when the switching frame is located at the left limit position, the stop rod is located at the front end of the stop groove, the unlocking slide block cannot slide back and forth, and the power storage pawl is kept against the power storage ratchet wheel; when the switching frame is located at the right limit position, the stop rod is located at the rear end of the stop groove, and the unlocking slide block can slide back and forth.

6. The partial discharge array detector of claim 1, wherein: the one-way pump comprises an inner cylinder fixedly connected to the inner bottom of the shell and communicated with the material pipe, and an outer cylinder connected to the outer wall of the inner cylinder in a sealing and sliding manner along the front-back direction; an inner one-way valve which is communicated from the inner part of the inner cylinder to the inner part of the outer cylinder in a one-way is formed on the inner wall of the front end of the inner cylinder; a feeding pipe is formed on the inner wall of the smearing pipe, and a discharging pipe communicated with the feeding pipe is fixedly connected to the front end of the outer cylinder; an outer one-way valve which is communicated from the inside of the outer cylinder to the inside of the discharge pipe in a one-way mode is formed on the inner wall of the front end of the outer cylinder; when the outer barrel slides backwards, the inner check valve is closed, the volume in the outer barrel is reduced, the pressure is increased, the outer check valve is opened, and the couplant in the outer barrel is conveyed into the smearing pipe through the discharge pipe; when the outer cylinder slides forwards, the outer one-way valve is closed, the volume in the outer cylinder is increased, the pressure is reduced, the inner one-way valve is opened, and the couplant in the material pipe is transported into the outer cylinder through the inner cylinder.

7. The partial discharge array detector of claim 6, wherein: a coating port for extruding the coupling agent is formed on the inner wall of the coating pipe; the inner walls of the two ends of the coating pipe are hermetically and slidably connected with a sealing sliding rod used for adjusting the length of the coating port; an adjusting sliding column is formed on the outer wall of one end, away from the smearing pipe, of each sealing sliding rod, two parallel accommodating grooves which are arranged in the vertical direction and can be in sliding connection with the corresponding adjusting sliding columns are formed at the front end of the shell, and an arc-shaped adjusting groove which can be in sliding connection with the corresponding adjusting sliding columns is formed at the upper end of each accommodating groove; when the adjusting sliding column is positioned in the accommodating groove, the two sealing sliding rods seal the coating port, and the coating pipe is positioned below the probe and cannot block the probe from moving out; when the adjusting sliding column is located in the adjusting groove, the two sealing sliding rods do not seal the coating port, the one-way pump conveys a coupling agent in the coating pipe to the front end of the probe through the coating port, and the length of the coating port which is not sealed is just equal to the width of the probe opposite to the coating port.

8. The partial discharge array detector of claim 7, wherein: an inner spiral groove which is spirally arranged is formed in the inner wall of the driving pipe, and a driving sliding column which is in sliding connection with the inner spiral groove is formed in the outer wall of the driving rod; the pitch of the inner spiral groove is kept unchanged; a driven sliding column is formed on the outer wall of the outer cylinder, and an outer spiral groove which is spirally arranged is formed on the outer wall of the driving pipe; the thread pitch of the outer spiral groove is gradually reduced from the middle position to the two ends; when the length of the coating opening which is not closed is increased, the amount of the coupling agent extruded by the one-way pump is increased, and when the length of the coating opening which is not closed is decreased, the amount of the coupling agent extruded by the one-way pump is decreased.

9. The partial discharge array detector of claim 1, wherein: the inner wall of the front side of the shell is connected with two lifting pawl strips which are arranged in parallel and fixedly connected with the smearing pipe in a sliding mode along the vertical direction, the inner wall of the front end of the shell is connected with two lifting ratchet wheels capable of driving the adjacent lifting pawl strips to slide upwards in a rotating mode, and a tension spring for driving the corresponding lifting pawl strips to move downwards is arranged between each lifting pawl strip and the shell; a lifting synchronous belt is rotationally connected between the two lifting ratchet wheels and the driving pipe; a smooth surface without ratchets is formed on the outer wall of the lifting ratchet wheel; when the lifting ratchet wheel is in transmission connection with the lifting pawl strip, the lifting ratchet wheel rotates to enable the lifting pawl strip to move upwards, the tension spring stretches to store force, when the polished surface moves to be close to the lifting pawl strip, the lifting ratchet wheel is not in transmission connection with the lifting pawl strip, and the lifting pawl strip moves downwards under the action of the elastic force of the tension spring.

10. The partial discharge array detector of claim 1, wherein: the two sides of the probe in the shell are respectively and rotatably connected with a sending-out wheel used for driving the corresponding transportation synchronous belt to operate, the bottom in the shell is rotatably connected with a synchronous belt reversing gear in transmission connection with one of the two sending-out wheels, and a reversing synchronous belt is rotatably connected between the synchronous belt reversing gear and the other of the two sending-out wheels; and the delivery wheel is fixedly connected with a synchronous gear in transmission connection with the synchronous belt reversing gear.