CN111504498A - GIS isolator contact temperature on-line monitoring system - Google Patents
GIS isolator contact temperature on-line monitoring system Download PDFInfo
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- CN111504498A CN111504498A CN202010482685.3A CN202010482685A CN111504498A CN 111504498 A CN111504498 A CN 111504498A CN 202010482685 A CN202010482685 A CN 202010482685A CN 111504498 A CN111504498 A CN 111504498A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
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- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 17
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- 238000007906 compression Methods 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000004927 fusion Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
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Abstract
The invention discloses a GIS disconnecting switch contact temperature on-line monitoring system, which comprises a mobile monitoring cabinet and a binding type sensing terminal, wherein the mobile monitoring cabinet is arranged on the GIS disconnecting switch contact temperature on-line monitoring system; the mobile monitoring cabinet comprises a cabinet body, a storage battery, a fiber bragg grating demodulator and a control box; the control box is arranged at the top of the cabinet body, and a controller, a charging and discharging circuit, a wireless communication module and a memory are arranged in the control box; the binding type sensing terminal comprises a binding hoop, two connecting rod mechanisms and fourteen fiber bragg grating temperature sensors. The GIS disconnecting switch contact temperature on-line monitoring system utilizes twelve fiber bragg grating temperature sensors to be close to the outer wall of a GIS disconnecting switch shell for temperature measurement, and then utilizes the other two fiber bragg grating temperature sensors to detect the ambient temperature around the GIS disconnecting switch shell; the binding hoop can be conveniently and detachably mounted, and the mounting and measuring requirements of various GIS isolating switch shells are met.
Description
Technical Field
The invention relates to an electrical equipment monitoring system, in particular to a GIS disconnecting switch contact temperature on-line monitoring system.
Background
With the progress of society, the use of electric energy is increasing, which results in the increase of power supply load and the aging of power supply equipment. In a long-term operation process, various electrical equipment of a transformer substation is easy to overheat due to the problems of overlarge contact resistance or insulation aging, the normal operation of the electrical equipment is directly influenced by the potential hazard, and even serious accidents can be caused in severe cases, so that personal injury and economic loss are caused.
At present, the means for monitoring the GIS isolating switch online or offline is limited, and mainly comprises monitoring SF6 air pressure by using an SF6 gas density relay, measuring temperature by using an infrared imaging technology, judging position indication and switch state by using mechanism signal acquisition, and detecting the insulating property and the contact condition of a conductive loop by using an insulation voltage resistance and loop resistance test.
The high-voltage isolating switch is high-voltage switch equipment which is most widely used and has the largest use amount in the operation of a power grid, the existence of the high-voltage isolating switch guarantees the personal safety of maintainers, the high-voltage isolating switch operates in the environment of high voltage and large current, and the temperature rise of a contact of the high-voltage isolating switch directly influences the reliability of power supply.
However, in the operation process of the power grid, due to factors such as unclean contact surface of the electrical equipment, ablation of the contact, and mechanical deformation and looseness, the contact condition may be deteriorated, so that the contact resistance is increased to cause the temperature of the contact point to be high, the oxidation of the contact surface is accelerated, further, electric arcs are generated at the local fusion welding or contact deformation and looseness positions, and finally, serious electrical accidents such as damage of the electrical equipment and power failure are caused. Therefore, the on-line monitoring of the contact temperature is of great significance in the operation of the electrical equipment of the substation, and the temperature is a very important parameter for the operating electrical equipment, so that whether the electrical equipment is in normal operation or not can be directly judged through the temperature information of the electrical equipment.
Disclosure of Invention
The invention aims to: the utility model provides a GIS isolator contact temperature on-line monitoring system can realize that the temperature of GIS isolator contact carries out real-time supervision to be convenient for in time discover that GIS isolator probably has the trouble.
The technical scheme is as follows: the invention creates a GIS disconnecting switch contact temperature on-line monitoring system, which comprises a mobile monitoring cabinet and a binding type sensing terminal;
the mobile monitoring cabinet comprises a cabinet body, a storage battery, a fiber bragg grating demodulator and a control box; the control box is arranged at the top of the cabinet body, and a controller, a charging and discharging circuit, a wireless communication module and a memory are arranged in the control box; the upper side surface of the control box is provided with an inclined slope surface, and a touch screen is arranged on the inclined slope surface; the storage battery and the fiber bragg grating demodulator are both arranged in the cabinet body; four top corners at the bottom of the cabinet body are respectively provided with a universal wheel; a grounding electrode is arranged at the center of the bottom of the cabinet body;
the binding type sensing terminal comprises a binding hoop, two connecting rod mechanisms and fourteen fiber bragg grating temperature sensors; the binding hoop is used for being installed on the GIS isolating switch shell in a surrounding mode; twelve fiber bragg grating temperature sensors are arranged on the binding hoop, four fiber bragg grating temperature sensors are close to the upper outer wall of the GIS isolating switch shell, four fiber bragg grating temperature sensors are close to the lower outer wall of the GIS isolating switch shell, two fiber bragg grating temperature sensors are close to the left outer wall of the GIS isolating switch shell, two fiber bragg grating temperature sensors are close to the right outer wall of the GIS isolating switch shell, and two fiber bragg grating temperature sensors are arranged on the binding hoop through two connecting rod mechanisms; the central axes of the fourteen fiber bragg grating temperature sensors are parallel to the central axis of the GIS isolating switch shell at the position surrounded by the binding hoop;
the controller is respectively and electrically connected with the wireless communication module, the memory, the touch screen and the signal end of the fiber grating demodulator, and the fourteen fiber grating temperature sensors are respectively connected with the input ports of the fiber grating demodulator; the storage battery supplies power to the controller, the wireless communication module, the memory, the touch screen and the fiber bragg grating demodulator through the charging and discharging circuit.
Furthermore, a drawer window is arranged on the upper layer of the cabinet body, and a storage drawer for storing the binding type sensing terminal is installed in the drawer window in a pull-and-insert mode; an equipment window is arranged at the lower layer of the cabinet body, and a front door of the cabinet body is hinged to the side edge of the equipment window; an equipment fixing plate is transversely arranged in the equipment window, and the fiber grating demodulator is arranged on the equipment fixing plate; the storage battery is arranged at the inner bottom of the cabinet body; a push-pull handle is arranged on the side of the cabinet body.
Furthermore, the binding hoop comprises an elastic flat strip, twelve sensing clamping units and an elastic locking unit; twelve sensing clamping units are slidably mounted on the elastic flat strip; the elastic locking unit is arranged at the end part of the elastic flat strip and is used for realizing that the elastic flat strip forms a hoop circular ring; twelve fiber bragg grating temperature sensors are arranged on the twelve sensing clamping units; two connecting rod mechanisms are all installed on the elastic flat strip, and two fiber bragg grating temperature sensors are installed on the two connecting rod mechanisms in a sliding mode.
Furthermore, the sensing clamping unit comprises a clamping seat, a locking screw, a flat bar clamping plate and two side clamping plates; an arc-shaped limiting groove is formed in the lower side surface of the clamping seat, and the fiber grating temperature sensor is arranged in the arc-shaped limiting groove; the two side clamping plates are respectively and swing-hinged on the left side and the right side of the clamping seat through side hinged seats; a clamping pressure spring is arranged between the upper side edges of the two side edge clamping plates and the side surface corresponding to the clamping seat and is used for pushing the lower side edges of the two side edge clamping plates to press and clamp the lower side edges of the two side edge clamping plates on the fiber bragg grating temperature sensor; a rectangular sliding hole is transversely formed in the upper part of the clamping seat, and the elastic flat strip transversely penetrates through the rectangular sliding hole; a strip-shaped guide hole is formed in the elastic flat strip along the length direction of the elastic flat strip; the locking screw is screwed on the upper side surface of the clamping seat, and the lower end part of the locking screw extends into the rectangular sliding hole and penetrates through the strip-shaped guide hole; the flat bar clamping plate is positioned in the rectangular sliding hole, and the lower end of the locking screw is rotatably arranged in the middle of the upper side face of the flat bar clamping plate; a cross-shaped handle is fixedly arranged at the upper end of the locking screw rod; a rebound pressure spring is sleeved on the locking screw rod, and the rebound pressure spring is elastically supported between the upper side hole wall of the rectangular sliding hole and the upper side face of the elastic flat bar.
Furthermore, an axial limiting rod is longitudinally arranged on the front side surface of the clamping seat, and an axial limiting baffle plate used for limiting the end position of the fiber bragg grating temperature sensor is arranged at the end part of the axial limiting rod.
Furthermore, the lower sides of the left and right side clamping plates are bent oppositely in an arc shape, and two rectangular square holes are arranged at the bent positions in the arc shape; an anti-skid rubber block is arranged at each rectangular square hole and pressed on the outer wall of the fiber bragg grating temperature sensor; the left side surface and the right side surface of the clamping seat are respectively provided with a pressure spring hole, and the end part of the clamping pressure spring is fixedly arranged in the pressure spring hole; the middle parts of the lower side edges of the two side edge clamping plates are respectively provided with a gluing notch for driving in heat-conducting silica gel.
Furthermore, the elastic locking unit comprises an elastic locking rod, a locking pressure spring, a locking nut and a locking seat; a fixed supporting seat and a lock rod hinging seat are arranged at one end part of the elastic flat strip, the fixed supporting seat and the lock rod hinging seat are separated by a certain distance, and a pull ring is rotatably arranged at the other end part of the elastic flat strip through a connecting pin shaft; a first through hole is formed in the fixed supporting seat, and a second through hole is formed in the lock rod hinge seat; the fixed supporting seat is provided with an embedded notch, and the lock rod hinge seat is provided with a hinge notch; one end of the elastic lock rod is axially provided with a strip-shaped hinge hole, and the other end of the elastic lock rod is vertically provided with a lock rod handle rod; a hinge pin shaft penetrating through the strip-shaped hinge hole is arranged on the hinge notch; the locking seat is rotatably arranged on the elastic locking rod, and a locking square plate is arranged on the lower side surface of the locking seat; a locking convex column is arranged on the lower side surface of the locking square plate; locking holes are arranged on the elastic flat bar at intervals; the elastic lock rod is provided with a locking external thread, and the locking nut is screwed on the locking external thread; the locking compression spring is sleeved on the elastic locking rod, a locking ring sleeve and a supporting ring sheet are fixedly arranged at two ends of the locking compression spring respectively, and the locking ring sleeve and the supporting ring sheet are sleeved on the elastic locking rod; the side face of the fixed supporting seat is provided with a limiting blind hole at the position of the embedding notch, after the elastic locking rod swings into the embedding notch, the locking ring sleeve is partially embedded into the limiting blind hole, the locking nut is pressed on the supporting ring piece, the other end of the elastic flat strip sequentially penetrates through the first through hole and the second through hole, and the locking convex column is inserted into the locking hole at the corresponding position.
Furthermore, the side face of the fixed supporting seat, which is opposite to the hinged seat of the lock rod, is provided with an inclined broken face.
The connecting rod mechanism further comprises an L-shaped rod, a sleeve, an insertion rod, a sliding seat, two strip-shaped clamping plates and two clamping nuts, wherein one end of the L-shaped rod penetrates through a strip-shaped guide hole, a clamping external thread is arranged at the penetrating position, a penetrating round hole is formed in the middle of each strip-shaped clamping plate, the L-shaped rod penetrates through the penetrating round holes of the two strip-shaped clamping plates, the two strip-shaped clamping plates are located on two sides of an elastic flat strip, the two clamping nuts are arranged on the clamping external threads in a threaded screwing mode and used for clamping the two strip-shaped clamping plates oppositely, the sleeve is fixedly arranged at the other end of the L-shaped rod, the insertion rod is inserted into the end of the sleeve, scale marks are arranged on the sleeve and the insertion rod, a sliding installation hole is formed in the sliding seat and sleeved on the sleeve through the sliding installation hole, a positioning bolt is arranged on the sliding seat in a threaded screwing mode, the screw end of the positioning bolt extends into the sliding installation hole and presses the sleeve, a mounting ring sleeve is arranged on a fiber bragg grating temperature sensor, and the grating temperature sensor penetrates through the central axis of the optical fiber grating shaft L.
Furthermore, a supporting inclined rod is hinged and installed at the end part of the insertion rod in a swinging mode, and an elastic thin plate used for being pressed close to and pressing the outer wall of the GIS isolating switch shell is arranged at the penetrating end part of the L-shaped rod.
Compared with the prior art, the invention has the beneficial effects that: the universal wheels arranged at the bottom of the cabinet body 1 are utilized, so that the movement is convenient, and the turnover use at each detection position on site is convenient; twelve fiber bragg grating temperature sensors are used for being close to the outer wall of the GIS isolating switch shell for temperature measurement, and the other two fiber bragg grating temperature sensors are used for detecting the ambient temperature around the GIS isolating switch shell; the binding hoop can be conveniently and detachably mounted, and the mounting and measuring requirements of various GIS isolating switch shells are met; the wireless communication module can be used for conveniently and remotely sending the temperature detection result to the control center, so that the control center can conveniently analyze the detection result; the central axis of the fiber bragg grating temperature sensor is arranged to be parallel to the central axis of the GIS isolating switch shell at the position surrounded by the binding hoop, so that the reliability of temperature detection can be ensured.
Drawings
FIG. 1 is a schematic diagram of the front view structure of the invention;
FIG. 2 is a schematic structural diagram of a binding type sensing terminal according to the present invention;
FIG. 3 is a schematic structural diagram of the elastic locking unit of the present invention;
FIG. 4 is a schematic rear view of the sensor clamping unit according to the present invention;
FIG. 5 is a schematic left-side view of the sensing unit according to the present invention;
FIG. 6 is a simplified schematic diagram of a binding type sensing terminal mounting structure according to the present invention;
fig. 7 is a schematic diagram of the circuit structure of the present invention.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1-7, the online monitoring system for the contact temperature of the GIS disconnecting switch, which is creatively disclosed by the invention, comprises: the mobile monitoring cabinet and the binding type sensing terminal are arranged on the mobile monitoring cabinet;
the mobile monitoring cabinet comprises a cabinet body 1, a storage battery 9, a fiber bragg grating demodulator 8 and a control box 4; the control box 4 is arranged at the top of the cabinet body 1, and a controller, a charging and discharging circuit, a wireless communication module and a memory are arranged in the control box 4; the upper side surface of the control box 4 is provided with an inclined slope surface, and a touch screen 5 is arranged on the inclined slope surface; the storage battery 9 and the fiber bragg grating demodulator 8 are both arranged in the cabinet body 1; four top corners at the bottom of the cabinet body 1 are respectively provided with a universal wheel 10; a grounding electrode 11 is arranged at the center of the bottom of the cabinet body 1;
the binding type sensing terminal comprises a binding hoop, two connecting rod mechanisms and fourteen fiber bragg grating temperature sensors 23; the binding hoop is used for being installed on the GIS isolating switch shell 65 in a surrounding mode; twelve fiber bragg grating temperature sensors 23 are arranged on the binding hoop, four fiber bragg grating temperature sensors 23 are attached to the upper outer wall of the GIS isolating switch shell 65, four fiber bragg grating temperature sensors 23 are attached to the lower outer wall of the GIS isolating switch shell 65, two fiber bragg grating temperature sensors 23 are attached to the left outer wall of the GIS isolating switch shell 65, two fiber bragg grating temperature sensors 23 are attached to the right outer wall of the GIS isolating switch shell 65, and the two fiber bragg grating temperature sensors 23 are arranged on the binding hoop through two connecting rod mechanisms; the central axes of the fourteen fiber bragg grating temperature sensors 23 are parallel to the central axis of the GIS isolating switch shell 65 at the position surrounded by the binding hoop;
the controller is respectively and electrically connected with the wireless communication module, the memory, the touch screen 5 and the signal end of the fiber grating demodulator 8, and the fourteen fiber grating temperature sensors 23 are respectively connected with the input ports of the fiber grating demodulator 8; the storage battery 9 supplies power to the controller, the wireless communication module, the memory, the touch screen 5 and the fiber grating demodulator 8 through the charging and discharging circuit.
The universal wheels 10 arranged at the bottom of the cabinet body 1 are utilized, so that the movement is convenient, and the turnover use at each detection position on site is convenient; the twelve fiber bragg grating temperature sensors 23 are close to the outer wall of the GIS isolating switch shell 65 for temperature measurement, and the other two fiber bragg grating temperature sensors 23 can be used for detecting the ambient temperature around the GIS isolating switch shell 65; the binding hoop can be conveniently and detachably mounted, and the mounting and measuring requirements of various GIS isolating switch shells 65 are met; the wireless communication module can be used for conveniently and remotely sending the temperature detection result to the control center, so that the control center can conveniently analyze the detection result; the central axis of the fiber bragg grating temperature sensor 23 is set to be parallel to the central axis of the GIS isolating switch shell 65 at the position surrounded by the binding hoop, so that the reliability of temperature detection can be ensured.
Further, a drawer window 2 is arranged on the upper layer of the cabinet body 1, and a storage drawer 3 for storing the binding type sensing terminal is installed in the drawer window 2 in a pulling and inserting mode; an equipment window is arranged at the lower layer of the cabinet body 1, and a cabinet body front door 6 is hinged to the side edge of the equipment window; an equipment fixing plate 7 is transversely arranged in the equipment window, and a fiber grating demodulator 8 is arranged on the equipment fixing plate 7; the storage battery 9 is arranged at the inner bottom of the cabinet body 1; a push-pull handle 12 is arranged on the side of the cabinet body 1. The storage drawer 3 can be used to store and place the binding-type sensing terminal before installation.
Further, the binding hoop comprises an elastic flat bar 13, twelve sensing clamping units and an elastic locking unit; twelve sensing clamping units are slidably mounted on the elastic flat bar 13; the elastic locking unit is arranged at the end part of the elastic flat strip 13 and is used for realizing that the elastic flat strip 13 forms a hoop circular ring; twelve fiber bragg grating temperature sensors 23 are arranged on the twelve sensing clamping units; two connecting rod mechanisms are installed on the elastic flat bar 13, and two fiber bragg grating temperature sensors 23 are installed on the two connecting rod mechanisms in a sliding mode. Utilize elasticity ribbon 13 can be convenient for the staple bolt formula to install on GIS isolator shell 65, and can realize the elasticity regulation formula staple bolt through elasticity locking unit, satisfy the GIS isolator shell 65 installation requirement of all kinds of diameters.
Further, the sensing clamping unit comprises a clamping seat 14, a locking screw 21, a flat bar clamping plate 28 and two side clamping plates 19; an arc-shaped limiting groove 15 is formed in the lower side surface of the clamping seat 14, and the fiber grating temperature sensor 23 is arranged in the arc-shaped limiting groove 15; the two side clamping plates 19 are respectively and swing-hinged on the left side and the right side of the clamping seat 14 through side hinging seats 18; a clamping pressure spring 17 is arranged between the upper side edges of the two side clamping plates 19 and the side surface corresponding to the clamping seat 14 and is used for pushing the lower side edges of the two side clamping plates 19 to be pressed and clamped on the fiber bragg grating temperature sensor 23; a rectangular sliding hole 27 is transversely formed in the upper part of the clamping seat 14, and the elastic flat bar 13 transversely penetrates through the rectangular sliding hole 27; a strip-shaped guide hole 31 is formed in the elastic flat strip 13 along the length direction of the elastic flat strip; the locking screw 21 is screwed on the upper side surface of the clamping seat 14, and the lower end part of the locking screw 21 extends into the rectangular sliding hole 27 and penetrates through the strip-shaped guide hole 31; the flat bar clamping plate 28 is positioned in the rectangular sliding hole 27, and the lower end of the locking screw 21 is rotatably arranged in the middle of the upper side face of the flat bar clamping plate 28; a cross-shaped handle 22 is fixedly arranged at the upper end of the locking screw rod 21; a rebound compression spring 34 is sleeved on the locking screw 21, and the rebound compression spring 34 is elastically supported between the upper side hole wall of the rectangular sliding hole 27 and the upper side surface of the elastic flat bar 13. The arc-shaped limiting groove 15 is used for facilitating stable clamping of the fiber grating temperature sensor 23; the clamping pressure spring 17 can enable the left and right side clamping plates 19 to be elastically clamped on the fiber bragg grating temperature sensor 23; the sensing clamping unit can be elastically arranged on the elastic flat bar 13 by utilizing the flat bar clamping plate 28, the locking screw 21 and the rebound compression spring 34, and the position of the fiber bragg grating temperature sensor 23 can be adjusted after an annular hoop is formed, so that the fiber bragg grating temperature sensor 23 is close to the outer wall of the GIS isolating switch shell 65; the retainer 14 can be prevented from coming off the flat elastic strip 13 by the locking screw 21 penetrating the strip guide hole 31.
Further, an axial limiting rod 24 is longitudinally arranged on the front side surface of the clamping seat 14, and an axial limiting baffle 25 for limiting the end position of the fiber bragg grating temperature sensor 23 is arranged at the end part of the axial limiting rod 24. The axial position of the fiber grating temperature sensors 23 can be limited by the axial limiting baffle 25, so that the axial positions of the fiber grating temperature sensors 23 are the same after installation, and the reliability of temperature detection is ensured.
Furthermore, the lower sides of the left and right side clamping plates 19 are bent oppositely in an arc shape, and two rectangular square holes 26 are arranged at the bent positions in the arc shape; an anti-skid rubber block 20 is arranged at each rectangular square hole 26 and pressed on the outer wall of the fiber bragg grating temperature sensor 23; the left side surface and the right side surface of the clamping seat 14 are respectively provided with a pressure spring hole 16, and the end parts of the clamping pressure springs 17 are fixedly arranged in the pressure spring holes 16; the middle parts of the lower sides of the two side clamping plates 19 are respectively provided with a glue injecting notch 68 for injecting heat-conducting silica gel. The fiber bragg grating temperature sensor 23 can be stably and reliably clamped by the left and right side clamping plates 19 which are bent oppositely to form an arc; the fiber grating temperature sensor 23 can be clamped in an anti-skid manner by utilizing the four anti-skid rubber blocks 20, and a gap can be reserved between the inner side surface of the side clamping plate 19 and the outer wall of the fiber grating temperature sensor 23, so that heat-conducting silica gel can be conveniently filled, and the heat-conducting effect of the fiber grating temperature sensor 23 is ensured; the glue-pouring notch 68 is used for filling heat-conducting silica gel into the gap between the fiber grating temperature sensor 23 and the outer wall of the GIS isolating switch shell 65, so that the reliability of temperature detection of the fiber grating temperature sensor 23 is ensured.
Further, the elastic locking unit includes an elastic locking lever 29, a locking compression spring 36, a locking nut 38, and a locking seat 47; a fixed support seat 32 and a lock rod hinge seat 43 are arranged at one end of the elastic flat bar 13, the fixed support seat 32 and the lock rod hinge seat 43 are separated by a certain distance, and a pull ring 51 is rotatably arranged at the other end of the elastic flat bar 13 through a connecting pin shaft 52; a first through hole 42 is formed in the fixed support base 32, and a second through hole 44 is formed in the lock rod hinge base 43; the fixed support seat 32 is provided with an embedding notch 41, and the lock rod hinge seat 43 is provided with a hinge notch 48; a bar-shaped hinge hole 46 is axially arranged at one end of the elastic lock rod 29, and a lock rod handle rod 40 is vertically arranged at the other end; a hinge pin shaft 45 penetrating through the strip-shaped hinge hole 46 is arranged on the hinge notch 48; the locking seat 47 is rotatably installed on the elastic locking rod 29, and a locking square plate 49 is arranged on the lower side surface of the locking seat 47; a locking convex column 50 is arranged on the lower side surface of the locking square plate 49; the elastic flat bar 13 is provided with locking holes 30 at intervals; a locking external thread 39 is arranged on the elastic locking rod 29, and a locking nut 38 is screwed on the locking external thread 39; the locking compression spring 36 is sleeved on the elastic lock rod 29, two ends of the locking compression spring 36 are respectively and fixedly provided with a locking ring sleeve 35 and a supporting ring piece 37, and the locking ring sleeve 35 and the supporting ring piece 37 are both sleeved on the elastic lock rod 29; a blind limiting hole 67 is formed in the side surface of the fixed support seat 32 and located at the embedding notch 41, after the elastic lock rod 29 swings into the embedding notch 41, the locking ring sleeve 35 is partially embedded into the blind limiting hole 67, the lock nut 38 is pressed on the support ring piece 37, the other end of the elastic flat strip 13 sequentially penetrates through the first through hole 42 and the second through hole 44, and the locking convex column 50 is inserted into the locking hole 30 at the corresponding position. When the elastic lock rod 29 swings into the embedding notch 41, the locking compression spring 36 can enable the locking ring sleeve 35 to be locally embedded into the limiting blind hole 67 in time for locking; the pull ring 51 can be used for conveniently pulling the end part of the other end of the elastic flat strip 13, so that the elastic flat strip 13 is pulled to form a hoop; the swing elastic lock lever 29 can be easily entered into the insertion notch 41 by the lock lever handle lever 40; the locking nut 38 can have a certain elastic effect on the ring formed by the adjusted elastic flat strip 13, so that rigid extrusion cannot be caused on each fiber grating temperature sensor 23; by means of the matching of the strip-shaped hinge hole 46 and the hinge pin 45, the swing-type hinge installation is realized, and the elastic lock rod 29 can move axially conveniently when the locking nut 38 is adjusted; the locking seat 47, the locking square plate 49, the locking convex column 50 and the locking hole 30 are matched to realize the overlapping locking of the elastic flat bar 13 so as to form the hoop circular ring.
Further, the side of the fixed support base 32 opposite to the locking lever hinge base 43 is provided with an inclined broken surface 33. When the elastic lock rod 29 swings into the embedding notch 41, the inclined broken surface 33 is utilized to facilitate the locking ring sleeve 35 to slide on the inclined broken surface 33 into the limiting blind hole 67, so that the swing locking of the elastic lock rod 29 is realized.
The optical fiber grating temperature sensor temperature adjusting device comprises a L-shaped rod 54, a sleeve 58, an inserting rod 59, a sliding seat 61, two strip-shaped clamping plates 55 and two clamping nuts 57, wherein one end of the L-shaped rod 54 penetrates through a strip-shaped guide hole 31 and is provided with a clamping external thread 56 at a penetrating position, a penetrating circular hole is formed in the middle of each of the two strip-shaped clamping plates 55, the L-shaped rod 54 penetrates through the penetrating circular holes of the two strip-shaped clamping plates 55, the two strip-shaped clamping plates 55 are located on two sides of an elastic flat strip 13, the two clamping nuts 57 are screwed on the clamping external thread 56 for oppositely clamping the two strip-shaped clamping plates 55, the sleeve 58 is fixedly installed on the other end of the L-shaped rod 54, the inserting rod 59 is inserted on the end of the sleeve 58 and is provided with a scale mark line 60 on the sleeve 58 and the inserting rod 59, a sliding installation hole is formed in the sliding seat 61 and is sleeved on the sleeve 58 through a sliding installation hole, a positioning bolt 63 is screwed on the sliding seat 61 and is pressed on the sleeve 58, a temperature adjusting ring 62 of the sleeve 58 is inserted on the sleeve 23, a GIS-shaped temperature adjusting mechanism 23, a temperature sensor 23 is installed on the sleeve 23, the sleeve 23 is capable of accurately obtained by pressing the temperature adjusting mechanism, the temperature adjusting mechanism 23 by the grating temperature adjusting ring 23, the grating adjusting rod 54, the grating adjusting mechanism is installed on the grating adjusting rod 23, the grating adjusting mechanism by the grating adjusting rod 54, the grating adjusting mechanism, the grating adjusting rod 23, the grating adjusting mechanism by the grating adjusting mechanism, the grating adjusting mechanism by the grating adjusting mechanism, the grating adjusting rod 23, the grating adjusting mechanism.
Furthermore, a supporting inclined rod 66 is hinged and installed at the end part of the insertion rod 59 in a swinging mode, an elastic thin plate 53 used for being pressed close to and pressed on the outer wall of the GIS isolating switch shell 65 is arranged at the penetrating end part of the L-shaped rod 54, the supporting requirement of the hanging end part of the insertion rod 59 can be met through the supporting inclined rod 66, the elastic flat strip 13 is prevented from being pulled excessively, the penetrating end part of the L-shaped rod 54 can be supported close to and supported on the outer wall of the GIS isolating switch shell 65 through the elastic thin plate 53, and the stability of the fiber bragg grating temperature sensor 23 in the installation ring sleeve 62 is guaranteed.
In the GIS isolating switch contact temperature on-line monitoring system, the controller adopts the existing single chip microcomputer control module for realizing signal receiving and transmitting, but the signal is received and transmitted, for example, an ARM single chip microcomputer; the memory consists of the existing memory chip and a peripheral circuit thereof and is used for storing temperature acquisition data; the wireless communication module adopts the existing wireless communication module, for example, a ZigBee wireless communication module; the touch screen 5 adopts the existing touch screen and is used for realizing man-machine interaction, starting and stopping control of temperature detection and real-time temperature display; the fiber bragg grating demodulator adopts a fiber bragg grating demodulator with the model of HG-FBG-100; the fiber bragg grating temperature sensor 23 is a fiber bragg grating temperature sensor with the model number HG-T01, and a sensor sensing part of the fiber bragg grating temperature sensor is of a columnar structure.
When the GIS isolating switch contact temperature online monitoring system is used, the cabinet body 1 is pushed to a detection position, and then the grounding electrode 11 is electrically connected with a grounding wire; installing a binding type sensing terminal on the periphery of a GIS isolating switch shell 65, enabling the end part of the elastic flat strip 13 to penetrate through the first through hole 42 and the second through hole 44, then pressing the elastic lock rod 29 into the embedding notch 41, enabling the locking convex column 50 to be inserted into the locking hole 30 at the corresponding position, simultaneously locally embedding the locking ring sleeve 35 into the limiting blind hole 67, and then adjusting the tightness of the hoop of the elastic flat strip 13 by screwing the locking nut 38; adjusting the position of each sensing clamping unit as required, and adjusting the gap between the outer walls of the GIS isolating switch shells 65 of the fiber bragg grating temperature sensors 23 by rotating the locking screw 21, so that the fiber bragg grating temperature sensors 23 are close to the outer walls but are not excessively extruded; then adjusting the inserting length of the inserting rod 59 and enabling the supporting inclined rod 66 to be supported at a stable position, thereby effectively preventing the elastic flat strip 13 from being excessively pulled; then adjusting the position of the sliding seat 61, and enabling the central axis of the fiber bragg grating temperature sensor 23 in the installation ring sleeve 62 to be 1 meter away from the outer wall of the GIS isolating switch shell 65 according to the scale marks; after the installation is finished, the heat-conducting silica gel is extruded at the position of the glue-applying notch 68, so that the fiber bragg grating temperature sensor 23 and the outer wall of the GIS isolating switch shell 65 can perform better heat transfer.
As mentioned above, although the invention has been shown and described with reference to certain preferred embodiments, it should not be construed as being limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a GIS isolator contact temperature on-line monitoring system which characterized in that: the system comprises a mobile monitoring cabinet and a binding type sensing terminal;
the mobile monitoring cabinet comprises a cabinet body (1), a storage battery (9), a fiber bragg grating demodulator (8) and a control box (4); the control box (4) is arranged at the top of the cabinet body (1), and a controller, a charging and discharging circuit, a wireless communication module and a memory are arranged in the control box (4); the upper side surface of the control box (4) is provided with an inclined slope surface, and a touch screen (5) is arranged on the inclined slope surface; the storage battery (9) and the fiber bragg grating demodulator (8) are both arranged in the cabinet body (1); four top corners at the bottom of the cabinet body (1) are respectively provided with a universal wheel (10); a grounding electrode (11) is arranged at the center of the bottom of the cabinet body (1);
the binding type sensing terminal comprises a binding hoop, two connecting rod mechanisms and fourteen fiber bragg grating temperature sensors (23); the binding hoop is used for being installed on a GIS isolating switch shell (65) in a surrounding mode; twelve fiber bragg grating temperature sensors (23) are arranged on the binding hoop, four fiber bragg grating temperature sensors (23) are attached to the outer wall of the upper side of the GIS isolating switch shell (65), four fiber bragg grating temperature sensors (23) are attached to the outer wall of the lower side of the GIS isolating switch shell (65), two fiber bragg grating temperature sensors (23) are attached to the outer wall of the left side of the GIS isolating switch shell (65), two fiber bragg grating temperature sensors (23) are attached to the outer wall of the right side of the GIS isolating switch shell (65), and the two fiber bragg grating temperature sensors (23) are arranged on the binding hoop through two connecting rod mechanisms; the central axes of the fourteen fiber bragg grating temperature sensors (23) are parallel to the central axis of the GIS isolating switch shell (65) at the position surrounded by the binding hoop;
the controller is respectively and electrically connected with the wireless communication module, the memory, the touch screen (5) and the signal end of the fiber grating demodulator (8), and the fourteen fiber grating temperature sensors (23) are respectively connected with the input ports of the fiber grating demodulator (8); the storage battery (9) supplies power to the controller, the wireless communication module, the memory, the touch screen (5) and the fiber bragg grating demodulator (8) through the charging and discharging circuit.
2. The GIS disconnector contact temperature online monitoring system of claim 1, characterized in that: a drawer window (2) is arranged on the upper layer of the cabinet body (1), and a storage drawer (3) for storing the binding type sensing terminal is installed in the drawer window (2) in a pulling and inserting mode; an equipment window is arranged at the lower layer of the cabinet body (1), and a cabinet body front door (6) is hinged to the side edge of the equipment window; an equipment fixing plate (7) is transversely arranged in the equipment window, and a fiber bragg grating demodulator (8) is arranged on the equipment fixing plate (7); the storage battery (9) is arranged at the inner bottom of the cabinet body (1); a push-pull handle (12) is arranged on the side of the cabinet body (1).
3. The GIS disconnector contact temperature online monitoring system of claim 1, characterized in that: the binding hoop comprises an elastic flat bar (13), twelve sensing clamping units and an elastic locking unit; twelve sensing clamping units are slidably mounted on the elastic flat bar (13); the elastic locking unit is arranged at the end part of the elastic flat strip (13) and is used for realizing that the elastic flat strip (13) forms a hoop circular ring; twelve fiber bragg grating temperature sensors (23) are arranged on the twelve sensing clamping units; two connecting rod mechanisms are installed on the elastic flat bar (13), and two fiber bragg grating temperature sensors (23) are installed on the two connecting rod mechanisms in a sliding mode.
4. The GIS disconnector contact temperature online monitoring system of claim 3, characterized in that: the sensing clamping unit comprises a clamping seat (14), a locking screw (21), a flat bar clamping plate (28) and two side clamping plates (19); an arc-shaped limiting groove (15) is formed in the lower side face of the clamping seat (14), and the fiber bragg grating temperature sensor (23) is arranged in the arc-shaped limiting groove (15); the two side clamping plates (19) are respectively and swing-hinged on the left side and the right side of the clamping seat (14) through side hinged seats (18); a clamping pressure spring (17) is arranged between the upper side edges of the two side clamping plates (19) and the corresponding side surface of the clamping seat (14) and is used for pushing the lower side edges of the two side clamping plates (19) to be pressed and clamped on the fiber bragg grating temperature sensor (23); a rectangular sliding hole (27) is transversely formed in the upper part of the clamping seat (14), and the elastic flat bar (13) transversely penetrates through the rectangular sliding hole (27); a strip-shaped guide hole (31) is formed in the elastic flat strip (13) along the length direction of the elastic flat strip; the locking screw rod (21) is screwed on the upper side surface of the clamping seat (14), and the lower end part of the locking screw rod (21) extends into the rectangular sliding hole (27) and penetrates through the strip-shaped guide hole (31); the flat bar clamping plate (28) is positioned in the rectangular sliding hole (27), and the lower end of the locking screw rod (21) is rotatably arranged in the middle of the upper side face of the flat bar clamping plate (28); a cross-shaped handle (22) is fixedly arranged at the upper end of the locking screw rod (21); a rebound compression spring (34) is sleeved on the locking screw (21), and the rebound compression spring (34) is elastically supported between the upper side hole wall of the rectangular sliding hole (27) and the upper side face of the elastic flat bar (13).
5. The GIS disconnector contact temperature online monitoring system of claim 4, characterized in that: an axial limiting rod (24) is longitudinally arranged on the front side surface of the clamping seat (14), and an axial limiting baffle plate (25) used for limiting the end position of the fiber grating temperature sensor (23) is arranged at the end part of the axial limiting rod (24).
6. The GIS disconnector contact temperature online monitoring system of claim 4, characterized in that: the lower sides of the left and right side clamping plates (19) are bent oppositely in an arc shape, and two rectangular square holes (26) are arranged at the bent positions in the arc shape; an anti-skid rubber block (20) is arranged at each rectangular square hole (26) and pressed on the outer wall of the fiber bragg grating temperature sensor (23); the left side surface and the right side surface of the clamping seat (14) are respectively provided with a pressure spring hole (16), and the end part of the clamping pressure spring (17) is fixedly arranged in the pressure spring hole (16); the lower side edges of the two side clamping plates (19) are respectively provided with a gluing notch (68) for driving heat-conducting silica gel.
7. The GIS disconnector contact temperature online monitoring system of claim 3, characterized in that: the elastic locking unit comprises an elastic locking rod (29), a locking pressure spring (36), a locking nut (38) and a locking seat (47); a fixed supporting seat (32) and a lock rod hinging seat (43) are arranged at one end part of the elastic flat strip (13), the fixed supporting seat (32) and the lock rod hinging seat (43) are separated by a certain distance, and a pull ring (51) is rotatably arranged at the other end part of the elastic flat strip (13) through a connecting pin shaft (52); a first through hole (42) is formed in the fixed support seat (32), and a second through hole (44) is formed in the lock rod hinge seat (43); an embedding notch (41) is arranged on the fixed supporting seat (32), and a hinge notch (48) is arranged on the lock rod hinge seat (43); one end of the elastic lock rod (29) is axially provided with a strip-shaped hinge hole (46), and the other end is vertically provided with a lock rod handle rod (40); a hinge pin shaft (45) penetrating through the strip-shaped hinge hole (46) is arranged on the hinge notch (48); the locking seat (47) is rotatably arranged on the elastic locking rod (29), and a locking square plate (49) is arranged on the lower side surface of the locking seat (47); a locking convex column (50) is arranged on the lower side surface of the locking square plate (49); locking holes (30) are arranged on the elastic flat bar (13) at intervals; a locking external thread (39) is arranged on the elastic locking rod (29), and a locking nut (38) is screwed on the locking external thread (39); the locking pressure spring (36) is sleeved on the elastic lock rod (29), two ends of the locking pressure spring (36) are respectively and fixedly provided with a locking ring sleeve (35) and a supporting ring piece (37), and the locking ring sleeve (35) and the supporting ring piece (37) are sleeved on the elastic lock rod (29); the side face of the fixed supporting seat (32) is provided with a limiting blind hole (67) at the position of the embedding notch (41), after the elastic locking rod (29) swings into the embedding notch (41), the locking ring sleeve (35) is partially embedded into the limiting blind hole (67), the locking nut (38) is pressed on the supporting ring piece (37), the other end of the elastic flat strip (13) sequentially penetrates through the first through hole (42) and the second through hole (44), and the locking convex column (50) is inserted into the locking hole (30) at the corresponding position.
8. The GIS disconnector contact temperature online monitoring system of claim 7, characterized in that: the fixed supporting seat (32) is arranged to be an inclined broken surface (33) relative to the side surface of the lock rod hinging seat (43).
9. The GIS disconnecting switch contact temperature online monitoring system according to claim 4 is characterized in that the connecting rod mechanism comprises a L-shaped rod (54), a sleeve (58), an insertion rod (59), a sliding seat (61), two strip-shaped clamping plates (55) and two clamping nuts (57), one end of the L-shaped rod (54) penetrates through a strip-shaped guide hole (31) and is provided with a clamping external thread (56) at a penetrating position, a penetrating circular hole is formed in the middle of each of the two strip-shaped clamping plates (55), the L-shaped rod (54) penetrates through the penetrating circular holes of the two strip-shaped clamping plates (55), the two strip-shaped clamping plates (55) are located on two sides of the elastic flat strip (13), the two clamping nuts (57) are arranged on the clamping external thread (56) in a threaded and screwed mode and are used for relatively clamping the two strip-shaped clamping plates (55), the sleeve (58) is fixedly arranged at the other end of the L-shaped rod (54), the insertion rod (59) is arranged on the end of the sleeve (58), the sleeve (58) and the sleeve (59) and is provided with a sliding ring bolt seat (63) which is fixedly arranged on the sliding sleeve (23), the sliding and is fixedly arranged on the sliding sleeve (23), the sliding ring bolt seat (61), the optical fiber temperature sensor (23), the sliding sleeve (23) is arranged on the sliding position of the sliding optical fiber temperature sensor (23), the sliding position fixing bolt (58), the sliding position fixing bolt (23), the sliding ring base (62), the sliding sleeve (62), the optical fiber temperature sensor (23) in the sliding ring base (62), the sliding position fixing bolt (62), the sliding sleeve (61), the sliding position fixing bolt (62), the.
10. The GIS disconnecting switch contact temperature online monitoring system according to claim 8 is characterized in that a supporting inclined rod (66) is hinged and installed at the end part of the plug-in rod (59) in a swinging mode, and an elastic thin plate (53) used for pressing closely on the outer wall of the GIS disconnecting switch shell (65) is arranged at the penetrating end part of the L-shaped rod (54).
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