CN117214239A - Cable damage simulation experiment device and method under flame effect - Google Patents

Abstract

The invention discloses a cable damage simulation experiment device and method under the action of flame, and belongs to the technical field of cable damage simulation. Including the simulation case, still include: the sliding strip is connected to the surface of the simulation box in a sliding way, a first spring is fixedly connected between the sliding strip and the simulation box, and a puncture needle is fixedly connected to the bottom of the sliding strip; the butt joint and the flame thrower are symmetrically and fixedly connected to the inner wall of the simulation box; the first supporting plate is fixedly connected to the inner wall of the simulation box, the surface of the first supporting plate is provided with a positioning groove, the surface of the first supporting plate is fixedly connected with a baffle plate, and the baffle plate corresponds to the outlet end of the flame thrower; the clamping mechanism is arranged on the surface of the first supporting plate and used for clamping the cable, the cable clamping device is used for clamping and fixing the cable, the cable is prevented from being displaced in the simulation experiment process, the experiment effect of the cable is affected, then the sliding bar is pressed to enable the puncture needle to puncture the cable, and finally the flame thrower is started to fire the cable, so that the experiment of simulating cable damage under the flame effect is conveniently realized.

Description

Cable damage simulation experiment device and method under flame effect

Technical Field

The invention relates to the technical field of cable damage simulation, in particular to a device and a method for simulating cable damage under the action of flame.

Background

The power cable is used as a power transmission medium and is widely applied to electric field, railway, aviation, city and other power transmission and distribution lines at present, and the safety and reliability of the power cable are of great significance to the safety of power equipment and even the whole power system. As cities develop, power cables are used more and more frequently, faults occur more and more frequently, and cable fault simulation and cable condition monitoring are focused by a large number of related researchers.

At present, many students develop researches on the cable needling defects, but the faults cannot be accurately and comprehensively simulated without related experimental devices, and the simulation on the condition that the cable is subjected to flame action under the needling defects is difficult, so that the researches on the cable needling defects are not deep enough, and therefore, improvement is needed.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, due to the fact that no related experimental device exists, faults cannot be accurately and comprehensively simulated, and the condition of a cable under a needling defect when the cable is subjected to flame action is difficult to simulate, so that the research on the needling defect of the cable is not deep enough, and provides the experimental device and the experimental method for cable damage simulation under the flame action.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a cable damage simulation experiment device under flame effect, is including articulating the analog box that has the chamber door, still includes: the sliding strip is connected to the surface of the simulation box in a sliding way, a first spring is fixedly connected between the sliding strip and the simulation box, and a puncture needle is fixedly connected to the bottom of the sliding strip; the butt joint and the flame thrower are symmetrically and fixedly connected to the inner wall of the simulation box, and the surface of the simulation box is fixedly connected with a display screen; the surface of the first supporting plate is fixedly connected with a baffle plate, and the baffle plate corresponds to the outlet end of the flame thrower; the clamping mechanism is arranged on the surface of the first supporting plate and used for clamping the cable.

For convenient centre gripping fixed cable, preferably, fixture is including the symmetry rotation connection be in the first threaded rod of first backup pad inner wall, the free end fixedly connected with second threaded rod of first threaded rod, the second threaded rod is opposite with the screw thread direction of first threaded rod, adjacent second threaded rod fixed connection, wherein, the equal threaded connection of outer wall of second threaded rod and first threaded rod has first slider, first slider and first backup pad sliding connection, the fixed surface of first slider is connected with splint, one of them the outer wall fixedly connected with knob of first threaded rod.

In order to facilitate the first sliding block to move only, further, a first sliding groove is formed in the surface of the first supporting plate, and the first sliding block is slidably connected in the first sliding groove.

In order to facilitate fixing the cable to be detected, preferably, the positioning groove is internally symmetrically and slidably connected with a second sliding block, the surface of the second sliding block is provided with a clamp, the surfaces of the clamp and the second sliding block are respectively provided with a first mounting hole, positioning pins are clamped in the first mounting holes, the surface of the first supporting plate is provided with a plurality of second mounting holes, and the second mounting holes are mutually matched with the positioning pins.

For convenient automatic connection cable both ends and butt joint, preferably, the fixed surface of simulation case is connected with the motor, the output fixedly connected with lead screw of motor, lead screw and first backup pad threaded connection, the inner wall fixedly connected with first guide arm of simulation case, first guide arm and first backup pad sliding connection.

For the convenience is automatic carries out the acupuncture operation to the cable, further, the fixed surface of simulation case is connected with the second backup pad, the surface rotation of second backup pad is connected with first bull stick, the transmission is connected with first chain between first bull stick and the lead screw, the outer wall fixedly connected with sector gear of first bull stick, wherein, the fixed surface of slide is connected with the linking board, the fixed surface of linking board is connected with the rack, can mesh between rack and the sector gear and can separate.

In order to facilitate the simulation of a humid environment, further, the surface fixedly connected with first piston assembly of simulation case, the power end and the linking board fixed connection of first piston assembly, first feed liquor pipe and first drain pipe of fixedly connected with on the first piston assembly, the first one-way solenoid valve of equal fixedly connected with on first feed liquor pipe and the first drain pipe, wherein, the lateral wall fixedly connected with clean water tank of simulation case, first feed liquor pipe and clean water tank fixed connection, the inner wall fixedly connected with collecting box of simulation case.

In order to facilitate the reuse of the wastewater, further, a second liquid inlet pipe is fixedly connected between the first liquid inlet pipe and the collecting box, a first filter is fixedly connected between the second liquid inlet pipe and the collecting box, and a second one-way electromagnetic valve is fixedly connected on the second liquid inlet pipe.

In order to facilitate improving the filtration efficiency of the second filter, further, the inner wall fixedly connected with second filter of collecting box, the lateral wall fixedly connected with deflector of second filter, the lateral wall fixedly connected with collecting box of collecting box, the deflector inclines towards the collecting box, wherein, the inner wall of collecting box rotates and is connected with the third threaded rod, the outer wall threaded connection of third threaded rod has first movable plate, first movable plate and collecting box sliding connection, the bottom fixedly connected with brush of first movable plate, and the inner wall of analog box rotates and is connected with the second bull stick, the transmission is connected with the second chain between second bull stick and the third threaded rod, the outer wall fixedly connected with first bevel gear of lead screw, the outer wall fixedly connected with second bevel gear of second bull stick, second bevel gear and first bevel gear intermeshing.

A cable damage simulation experiment method under the action of flame comprises the following operation steps:

step one: clamping and fixing a cable to be detected, and electrically connecting two ends of the cable with an electrical performance detector;

step two: performing water spraying operation on the cable, and detecting the electrical performance of the cable in a wet environment;

step three: collecting waste water, filtering the waste water and reusing the waste water;

step four: the cable is subjected to needling operation, and then flame is sprayed on the cable to simulate the damage degree of the cable under the action of the flame.

Compared with the prior art, the invention provides a cable damage simulation experiment device under the action of flame, which has the following beneficial effects:

1. this cable damage simulation experiment device under flame effect is through placing the cable that will wait to detect on the surface of first backup pad to peg graft the end of cable in the butt joint, then make splint remove, thereby be convenient for fix cable centre gripping, prevent that displacement phenomenon from appearing in the cable in simulation experiment process, influence the experimental effect of cable, then press the draw runner and make the pjncture needle puncture cable, loosen the draw runner, under the effect of first spring, make the pjncture needle get back to initial position, open the flame thrower at last and fire to the cable, conveniently realize the experiment of simulation cable damage under the flame effect.

2. This cable damage simulation experiment device under flame effect, through fix the both ends of cable with splint after, then fix clamp and second slider in the constant head tank with the locating pin, thereby make the cable flame spraying part keep straight state, the accuracy of simulation experiment result has been improved, the first backup pad of starter motor drive moves on first guide arm, thereby be convenient for peg graft the end of cable in the butt joint automatically, the security performance has been improved, simultaneously, under the transmission effect of first chain, the lead screw drives the felting needle and removes, thereby be convenient for carry out puncturing operation to the cable automatically, simulation experiment's work efficiency has been improved.

3. This cable damage simulation experiment device under flame effect drives first piston subassembly through the joint board and works to be convenient for spray rivers on the cable, thereby be convenient for simulate moist environment, and unnecessary rivers collect in the collecting box, open second one-way solenoid valve, close first one-way solenoid valve on the first feed liquor pipe, conveniently make the rivers in the collecting box spray on the cable after the filtration of first filter, thereby be convenient for cyclic utilization of water resource, practiced thrift the water resource.

4. This cable damage simulation experiment device under flame effect drives first bevel gear through the lead screw and rotates, and first bevel gear drives second bevel gear and rotates, and the second bevel gear drives the second bull stick and rotates, and under the transmission effect of second chain, the second bull stick drives the third threaded rod and rotates, and the third threaded rod drives first movable plate and removes in the collecting box to be convenient for clean the impurity of detention on second filter surface to the deflector, collect at the collecting box at last, improved the filtration efficiency of second filter.

Drawings

FIG. 1 is a schematic diagram of a cable damage simulation experiment device under the action of flame;

fig. 2 is an enlarged schematic diagram of a structure at a position a in fig. 1 of a cable damage simulation experiment device under the action of flame provided by the invention;

fig. 3 is a schematic diagram of a part of a cable damage simulation experiment device under the action of flame;

fig. 4 is a schematic diagram of a part of a cable damage simulation experiment device under the action of flame according to the second embodiment of the present invention;

fig. 5 is an enlarged schematic diagram of a structure at B in fig. 4 of a cable damage simulation experiment device under the action of flame according to the present invention;

fig. 6 is a schematic diagram III of a part of a cable damage simulation experiment device under the action of flame;

fig. 7 is a schematic diagram of a second moving plate structure in a cable damage simulation experiment device under the action of flame according to the present invention;

fig. 8 is a schematic diagram of the structure of the butt joint in the cable damage simulation experiment device under the flame effect;

fig. 9 is a schematic diagram of a sealing air bag structure in a cable damage simulation experiment device under the action of flame.

In the figure: 1. a simulation box; 101. a first support plate; 102. butt joint; 103. a display screen; 104. a door; 105. a needle; 106. a flame thrower; 107. a baffle; 108. a slide bar; 109. a first spring; 2. a first threaded rod; 201. a second threaded rod; 202. a clamping plate; 203. a knob; 204. a positioning groove; 205. a first chute; 206. a first slider; 3. a second slider; 301. a clamp; 302. a first mounting hole; 303. a second mounting hole; 304. a positioning pin; 305. a motor; 306. a screw rod; 307. a first guide bar; 4. a second support plate; 401. a first rotating lever; 402. a first chain; 403. a sector gear; 404. a splice plate; 405. a rack; 5. a first piston assembly; 501. a first liquid inlet pipe; 502. a first liquid outlet pipe; 503. a first one-way solenoid valve; 504. a collection box; 505. a second liquid inlet pipe; 506. a first filter; 507. a second one-way solenoid valve; 508. a clean water tank; 6. a second filter; 601. a guide plate; 602. a first moving plate; 603. a collection box; 604. a third threaded rod; 605. a second rotating rod; 606. a second chain; 607. a first bevel gear; 608. a second bevel gear; 609. a brush; 7. a slide bar; 701. a second guide bar; 702. a second moving plate; 703. a second piston assembly; 704. an air inlet pipe; 705. an air outlet pipe; 706. a third one-way valve; 707. a blowing hole; 708. a wave-shaped groove; 8. sealing the air bag; 801. a pressure release valve; 802. a connecting pipe; 803. an exhaust duct.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-3, a cable damage simulation experiment device under the action of flame includes a simulation box 1 hinged with a box door 104, and further includes: the sliding strip 108 is connected to the surface of the simulation box 1 in a sliding manner, a first spring 109 is fixedly connected between the sliding strip 108 and the simulation box 1, and a puncture needle 105 is fixedly connected to the bottom of the sliding strip 108; the butt joint 102 and the flame thrower 106 are symmetrically and fixedly connected to the inner wall of the simulation box 1, and the surface of the simulation box 1 is fixedly connected with the display screen 103; the first supporting plate 101 is fixedly connected to the inner wall of the simulation box 1, a positioning groove 204 is formed in the surface of the first supporting plate 101, a baffle 107 is fixedly connected to the surface of the first supporting plate 101, and the baffle 107 corresponds to the outlet end of the flame thrower 106; and the clamping mechanism is arranged on the surface of the first supporting plate 101 and is used for clamping the cable.

Referring to fig. 2-3, the clamping mechanism comprises a first threaded rod 2 symmetrically rotatably connected to the inner wall of the first supporting plate 101, a second threaded rod 201 is fixedly connected to the free end of the first threaded rod 2, the second threaded rod 201 is opposite to the first threaded rod 2 in thread direction, adjacent second threaded rods 201 are fixedly connected, first sliding blocks 206 are respectively and spirally connected to the outer walls of the second threaded rod 201 and the first threaded rod 2, the first sliding blocks 206 are slidably connected with the first supporting plate 101, clamping plates 202 are fixedly connected to the surfaces of the first sliding blocks 206, and a knob 203 is fixedly connected to the outer wall of one of the first threaded rods 2.

The surface of the first supporting plate 101 is provided with a first sliding groove 205, and a first sliding block 206 is slidably connected in the first sliding groove 205.

In this embodiment, the cable to be detected is placed on the surface of the first supporting plate 101, the end of the cable is spliced in the butt joint 102, then the knob 203 is rotated to enable the first threaded rod 2 and the second threaded rod 201 to rotate, so that the clamping plate 202 is convenient to move, the cable is convenient to clamp and fix, the displacement phenomenon of the cable in the simulation experiment process is prevented from being caused, the experimental effect of the cable is affected, then the sliding bar 108 is pressed to enable the puncture needle 105 to puncture the cable, the sliding bar 108 is loosened, under the action of the first spring 109, the puncture needle 105 returns to the initial position, and finally the flame thrower 106 is started to fire the cable, so that the experiment of simulating cable damage under the action of flame is convenient to realize.

Example 2:

referring to fig. 2-3, substantially the same as example 1, further, a specific embodiment of the portion of the stationary cable to be inspected is added.

Because the air current that produces in the process of flaming to the cable easily makes the cable bend to influence the accuracy of simulation experiment result in the in-process of flaming, consequently, referring to fig. 2-3, symmetrical sliding connection has second slider 3 in the constant head tank 204, and the surface of second slider 3 is provided with clamp 301, and the surface of clamp 301 and second slider 3 all opens first mounting hole 302, and the joint has locating pin 304 in the first mounting hole 302, and the surface of first backup pad 101 opens a plurality of second mounting holes 303, and second mounting hole 303 and locating pin 304 mutually match.

After the two ends of the cable are fixed by the clamping plates 202, the second sliding block 3 is moved in the positioning groove 204, the first mounting hole 302 is aligned with the second mounting hole 303, and then the clamp 301 and the second sliding block 3 are fixed in the positioning groove 204 by the positioning pin 304, so that the flame-spraying part of the cable is kept in a straight state, and the accuracy of simulation experiment results is improved.

Example 3:

referring to fig. 1 and 3 to 6, substantially the same as example 2, further, a specific embodiment for improving the working efficiency of the simulation experiment was added.

Referring to fig. 1 and fig. 3 to 6, a motor 305 is fixedly connected to the surface of the simulation box 1, a screw rod 306 is fixedly connected to the output end of the motor 305, the screw rod 306 is in threaded connection with the first support plate 101, a first guide rod 307 is fixedly connected to the inner wall of the simulation box 1, and the first guide rod 307 is in sliding connection with the first support plate 101.

Referring to fig. 1 and fig. 3-6, the surface of the simulation box 1 is fixedly connected with a second supporting plate 4, the surface of the second supporting plate 4 is rotatably connected with a first rotating rod 401, a first chain 402 is connected between the first rotating rod 401 and a screw rod 306 in a transmission manner, the outer wall of the first rotating rod 401 is fixedly connected with a sector gear 403, wherein a connecting plate 404 is fixedly connected with the surface of the sliding bar 108, a rack 405 is fixedly connected with the surface of the connecting plate 404, and the rack 405 and the sector gear 403 can be meshed and separated.

In this embodiment, the clamping plate 202 is used for clamping two ends of a cable, then the motor 305 is started to drive the screw rod 306 to rotate, the screw rod 306 drives the first supporting plate 101 to move on the first guide rod 307, so that the ends of the cable are automatically spliced in the butt joint 102, and safety performance is improved.

Example 4:

referring to fig. 1 and 4, substantially the same as in example 3, further, a specific embodiment of simulating a humid environment was added.

Referring to fig. 1 and 4, a first piston assembly 5 is fixedly connected to the surface of the simulation box 1, a power end of the first piston assembly 5 is fixedly connected to a connecting plate 404, a first liquid inlet pipe 501 and a first liquid outlet pipe 502 are fixedly connected to the first piston assembly 5, a first one-way electromagnetic valve 503 is fixedly connected to the first liquid inlet pipe 501 and the first liquid outlet pipe 502, a clear water tank 508 is fixedly connected to the side wall of the simulation box 1, the first liquid inlet pipe 501 is fixedly connected to the clear water tank 508, and a collecting box 504 is fixedly connected to the inner wall of the simulation box 1.

It should be noted that the first piston assembly 5 includes a first piston cylinder, a first piston plate slidably connected in the first piston cylinder, and a first piston rod fixedly connected to the first piston plate.

The power end of the first piston assembly 5 is fixedly connected with the engagement plate 404, which means that the end of the first piston rod, which is far away from the first piston cylinder, is fixed with the engagement plate 404.

The first one-way electromagnetic valve 503 on the first liquid inlet pipe 501 is conducted unidirectionally towards the first piston cylinder, and the first one-way electromagnetic valve 503 on the first liquid outlet pipe 502 is conducted unidirectionally into the simulation box 1.

In order to facilitate the reuse of the wastewater, a second liquid inlet pipe 505 is fixedly connected between the first liquid inlet pipe 501 and the collecting box 504, a first filter 506 is fixedly connected between the second liquid inlet pipe 505 and the collecting box 504, and a second one-way electromagnetic valve 507 is fixedly connected on the second liquid inlet pipe 505.

The connecting plate 404 drives the piston rod to reciprocate, thereby facilitating the reciprocating movement of the piston plate in the piston cylinder, when the piston plate moves towards the connecting plate 404, the first one-way electromagnetic valve 503 on the first liquid inlet pipe 501 is opened, the first one-way electromagnetic valve 503 on the first liquid outlet pipe 502 is closed, water flow in the clear water tank 508 enters the first piston cylinder, when the first piston plate moves towards the first piston cylinder, the first one-way electromagnetic valve 503 on the first liquid inlet pipe 501 is closed, the first one-way electromagnetic valve 503 on the first liquid outlet pipe 502 is opened, water flow in the first piston cylinder is sprayed on a cable, thereby facilitating the simulation of a humid environment, redundant water flow is collected in the collecting box 504, the second one-way electromagnetic valve 507 is opened, the first one-way electromagnetic valve 503 on the first liquid inlet pipe 501 is closed, the water flow in the collecting box 504 is conveniently sprayed on the cable after being filtered by the first filter 506, thereby facilitating the recycling of water resources and saving water resources.

Example 5:

referring to fig. 1 and 3 to 8, substantially the same as example 4, further, a specific embodiment for improving the filtration efficiency of the second filter 6 was added.

Referring to fig. 3 to 6, the inner wall of the collecting box 504 is fixedly connected with the second filter 6, the side wall of the second filter 6 is fixedly connected with the guide plate 601, the side wall of the collecting box 504 is fixedly connected with the collecting box 603, the guide plate 601 is inclined towards the collecting box 603, wherein the inner wall of the collecting box 504 is rotatably connected with the third threaded rod 604, the outer wall of the third threaded rod 604 is in threaded connection with the first moving plate 602, the first moving plate 602 is slidably connected with the collecting box 504, the bottom of the first moving plate 602 is fixedly connected with the brush 609, the inner wall of the simulation box 1 is rotatably connected with the second rotating rod 605, a second chain 606 is in transmission connection between the second rotating rod 605 and the third threaded rod 604, the outer wall of the screw rod 306 is fixedly connected with the first bevel gear 607, the outer wall of the second rotating rod 605 is fixedly connected with the second bevel gear 608, and the second bevel gear 608 is meshed with the first bevel gear 607.

The lead screw 306 drives the first bevel gear 607 to rotate, the first bevel gear 607 drives the second bevel gear 608 to rotate, the second bevel gear 608 drives the second rotating rod 605 to rotate, under the transmission effect of the second chain 606, the second rotating rod 605 drives the third threaded rod 604 to rotate, and the third threaded rod 604 drives the first moving plate 602 to move in the collecting box 504, so that impurities retained on the surface of the second filter 6 are conveniently cleaned on the guide plate 601, and finally collected on the collecting box 603, and the filtering efficiency of the second filter 6 is improved.

It should be noted that, referring to fig. 1 and fig. 6-9, the surface of the first moving plate 602 is fixedly connected with a sliding rod 7, the inner wall of the simulation box 1 is symmetrically and fixedly connected with a second guide rod 701, the outer wall of the second guide rod 701 is slidably connected with the second moving plate 702, the surface of the second moving plate 702 is provided with a wave-shaped groove 708, the sliding rod 7 is slidably connected in the wave-shaped groove 708, the inner wall of the simulation box 1 is symmetrically and fixedly connected with a second piston assembly 703, the power end of the second piston assembly 703 is fixedly connected with the second moving plate 702, the second piston assembly 703 is fixedly connected with an air inlet pipe 704 and an air outlet pipe 705, the air inlet pipe 704 and the air outlet pipe 705 are fixedly connected with a third one-way valve 706, the air inlet pipe 704 is mutually communicated with the collection box 504, the butt joint 102 is provided with a blowing hole 707, and the air outlet pipe 705 is mutually communicated with the blowing hole 707.

The second piston assembly 703 includes a second piston cylinder, a second piston plate slidably coupled within the second piston cylinder, and a second piston rod fixedly coupled to the second piston plate.

The third one-way valve 706 on the air inlet pipe 704 is conducted unidirectionally towards the direction of the second piston cylinder, and the third one-way valve 706 on the air outlet pipe 705 is conducted unidirectionally towards the direction of the air blowing hole 707.

The first moving plate 602 drives the sliding rod 7 to slide in the wavy groove 708, so that the second moving plate 702 moves reciprocally on the second guide rod 701, and the second piston assembly 703 works normally, so that the moist air flow is blown onto the butt joint 102, the butt joint 102 is kept in a normal temperature or low temperature state all the time, and the influence on the service life of the cable due to the overhigh temperature of the butt joint 102 in the process of flaming is avoided.

As shown in fig. 8, the abutment 102 has the following external shape: the inner diameter of one end connected with the simulation box 1 is small, then the inner diameter gradually expands towards the inner side of the simulation box 1, the side wall of the butt joint 102 is divided into two sections, one section is in a horizontal cylinder shape, and the other section is in an inclined contracted shape, so that the shape similar to a funnel is formed.

The horizontal side wall and the inclined side wall of the butt joint 102 are provided with the air blowing holes 707, that is, when the air blowing holes 707 blow air, the blown humid air flow blows on the surface of the cable, so that the overhigh temperature at the position is avoided, and the disassembly of workers after the simulation experiment is inconvenient;

meanwhile, the humid air flow blown out from the air blowing holes 707 is blown into the simulation box 1 through the inclined side wall, so that the whole inside of the simulation box 1 is in a high-humidity environment, and at the moment, the humid air flow is matched with the flame spraying device 106 to form a high-temperature and high-humidity environment, and a damage simulation experiment is performed on the cable under an extreme environment.

That is, the second piston assembly 703 is synchronously driven to operate by the first moving plate 602 during the movement, and the blowing holes 707 blow out the humid air flow by using the already generated humid environment, and simultaneously have the following functions:

1. the cable connected with the butt joint 102 is protected, so that the temperature is prevented from being too high, and the disassembly after the experiment is inconvenient;

2. the simulation box 1 is in a high-humidity environment, and is matched with the flame of the flame thrower 106 to perform damage simulation experiments on the cable in an extreme environment.

3. Through blowing hole 707 to the simulation incasement 1, make the steam in the simulation case 1 can not outwards spill over through butt joint 102, avoided scalding the past personnel, promote the security.

At the same time:

as shown in fig. 8 and 9, a sealing air bag 8 is further disposed in the butt joint 102, the sealing air bag 8 is annular, during experiments, a cable penetrates through the sealing air bag 8, the sealing air bag 8 is communicated with an air outlet pipe 705 through a connecting pipe 802, an exhaust pipe 803 is disposed on the connecting pipe 802, and a valve is mounted on the exhaust pipe 803.

One end of the air outlet pipe 705, which is close to the air blowing hole 707, is provided with a pressure relief valve 801.

Before the air outlet pipe 705 blows through the blowing hole 707, the pressure release valve 801 is closed, air can enter the sealing air bag 8 through the connecting pipeline 802, the sealing air bag 8 is expanded to tightly wrap the cable, the sealing effect is achieved, and hot air is prevented from being blown out from the butt joint 102 to hurt the passing personnel and the cable outside the simulation box 1.

When the air pressure in the sealed airbag 8 reaches the critical value of the relief valve 801, the relief valve 801 is automatically opened, and the humid air flow is blown out from the blowing hole 707.

The blowing holes 707 blow out the humid air flow, and have the following effects in addition to the above three advantages.

The blown out humid air flow can also simultaneously protect the sealed air bag 8 from being corroded by hot air, thereby prolonging the service life.

When the simulation experiment is completed, the valve is opened, and the gas in the sealing airbag 8 is discharged through the gas discharge pipe 803, so that the sealing airbag 8 is contracted and separated from the cable.

A cable damage simulation experiment method under the action of flame comprises the following operation steps:

step one: rotating knob 203 moves clamping plate 202 so as to facilitate clamping and fixing of the cable, and starting motor 305 drives first supporting plate 101 to move on first guide rod 307 so as to facilitate automatic plugging of the end of the cable into butt joint 102;

step two: the joint plate 404 drives the first piston assembly 5 to work, so that the water spraying operation on the cable is facilitated, and the electrical performance of the cable in a wet environment is detected;

step three: the redundant water flow is collected in the collecting box 504, the second one-way electromagnetic valve 507 is opened, the first one-way electromagnetic valve 503 on the first liquid inlet pipe 501 is closed, and the water flow in the collecting box 504 is conveniently sprayed on a cable after being filtered by the first filter 506, so that the water resource can be conveniently recycled;

step four: the screw rod 306 drives the puncture needle 105 to reciprocate, so that the cable is subjected to a needling operation, and then flame is sprayed on the cable to simulate the damage degree of the cable under the action of the flame.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the present invention pertains should make equivalent substitutions or modifications according to the technical scheme and the inventive concept disclosed herein, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a cable damage simulation experiment device under flame effect, has simulated box (1) of chamber door (104) including articulated, its characterized in that still includes:

the sliding strip (108) is connected to the surface of the simulation box (1) in a sliding manner, a first spring (109) is fixedly connected between the sliding strip (108) and the simulation box (1), and a puncture needle (105) is fixedly connected to the bottom of the sliding strip (108);

the butt joint (102) and the flame thrower (106) are symmetrically and fixedly connected to the inner wall of the simulation box (1), and a display screen (103) is fixedly connected to the surface of the simulation box (1);

the device comprises a first supporting plate (101) fixedly connected to the inner wall of a simulation box (1), wherein a positioning groove (204) is formed in the surface of the first supporting plate (101), a baffle (107) is fixedly connected to the surface of the first supporting plate (101), and the baffle (107) corresponds to the outlet end of a flame thrower (106);

and the clamping mechanism is arranged on the surface of the first supporting plate (101) and is used for clamping the cable.

2. The experimental device for simulating cable damage under the action of flame according to claim 1, wherein the clamping mechanism comprises a first threaded rod (2) symmetrically and rotatably connected to the inner wall of the first supporting plate (101), a second threaded rod (201) is fixedly connected to the free end of the first threaded rod (2), the second threaded rod (201) is opposite to the first threaded rod (2) in thread direction, adjacent second threaded rods (201) are fixedly connected,

the novel threaded rod comprises a first support plate (101), a second threaded rod (201) and a first threaded rod (2), wherein the outer walls of the second threaded rod and the first threaded rod (2) are in threaded connection with a first sliding block (206), the first sliding block (206) is in sliding connection with the first support plate (101), a clamping plate (202) is fixedly connected with the surface of the first sliding block (206), and a knob (203) is fixedly connected with the outer wall of one of the first threaded rods (2).

3. The experimental device for simulating cable damage under the action of flame according to claim 2, wherein the surface of the first supporting plate (101) is provided with a first chute (205), and the first sliding block (206) is slidably connected in the first chute (205).

4. The cable damage simulation experiment device under the action of flame according to claim 1, wherein a second sliding block (3) is symmetrically and slidably connected in the positioning groove (204), a clamp (301) is arranged on the surface of the second sliding block (3), first mounting holes (302) are formed in the surfaces of the clamp (301) and the second sliding block (3), positioning pins (304) are clamped in the first mounting holes (302), a plurality of second mounting holes (303) are formed in the surface of the first supporting plate (101), and the second mounting holes (303) are mutually matched with the positioning pins (304).

5. The cable damage simulation experiment device under the action of flame according to claim 1, wherein a motor (305) is fixedly connected to the surface of the simulation box (1), a screw rod (306) is fixedly connected to the output end of the motor (305), the screw rod (306) is in threaded connection with the first supporting plate (101), a first guide rod (307) is fixedly connected to the inner wall of the simulation box (1), and the first guide rod (307) is in sliding connection with the first supporting plate (101).

6. The cable damage simulation experiment device under the action of flame according to claim 5, wherein the surface of the simulation box (1) is fixedly connected with a second supporting plate (4), the surface of the second supporting plate (4) is rotatably connected with a first rotating rod (401), a first chain (402) is connected between the first rotating rod (401) and a screw rod (306) in a transmission manner, the outer wall of the first rotating rod (401) is fixedly connected with a sector gear (403),

the surface of the sliding strip (108) is fixedly connected with a connecting plate (404), the surface of the connecting plate (404) is fixedly connected with a rack (405), and the rack (405) and the sector gear (403) can be meshed and separated.

7. The cable damage simulation experiment device under the action of flame according to claim 6, wherein the surface of the simulation box (1) is fixedly connected with a first piston assembly (5), the power end of the first piston assembly (5) is fixedly connected with a connecting plate (404), a first liquid inlet pipe (501) and a first liquid outlet pipe (502) are fixedly connected with the first piston assembly (5), a first one-way electromagnetic valve (503) is fixedly connected with the first liquid inlet pipe (501) and the first liquid outlet pipe (502),

the side wall of the simulation box (1) is fixedly connected with a clear water tank (508), the first liquid inlet pipe (501) is fixedly connected with the clear water tank (508), and the inner wall of the simulation box (1) is fixedly connected with a collecting box (504).

8. The experimental device for simulating cable damage under the action of flame according to claim 7, wherein a second liquid inlet pipe (505) is fixedly connected between the first liquid inlet pipe (501) and the collecting box (504), a first filter (506) is fixedly connected between the second liquid inlet pipe (505) and the collecting box (504), and a second one-way electromagnetic valve (507) is fixedly connected on the second liquid inlet pipe (505).

9. The experimental device for simulating cable damage under action of flame as set forth in claim 7, wherein the inner wall of the collecting box (504) is fixedly connected with a second filter (6), the side wall of the second filter (6) is fixedly connected with a guide plate (601), the side wall of the collecting box (504) is fixedly connected with a collecting box (603), the guide plate (601) is inclined toward the collecting box (603),

wherein the inner wall of the collecting box (504) is rotationally connected with a third threaded rod (604), the outer wall of the third threaded rod (604) is in threaded connection with a first moving plate (602), the first moving plate (602) is in sliding connection with the collecting box (504), the bottom of the first moving plate (602) is fixedly connected with a hairbrush (609),

and the inner wall of the simulation box (1) is rotationally connected with a second rotating rod (605), a second chain (606) is connected between the second rotating rod (605) and a third threaded rod (604) in a transmission manner, the outer wall of the screw rod (306) is fixedly connected with a first bevel gear (607), the outer wall of the second rotating rod (605) is fixedly connected with a second bevel gear (608), and the second bevel gear (608) is meshed with the first bevel gear (607).

10. A cable damage simulation experiment method under the action of flame, which adopts the cable damage simulation experiment device under the action of flame as claimed in any one of claims 1 to 9, and is characterized in that the operation steps are as follows:

step one: clamping and fixing a cable to be detected, and electrically connecting two ends of the cable with an electrical performance detector;

step two: performing water spraying operation on the cable, and detecting the electrical performance of the cable in a wet environment;

step three: collecting waste water, filtering the waste water and reusing the waste water;

step four: the cable is subjected to needling operation, and then flame is sprayed on the cable to simulate the damage degree of the cable under the action of the flame.