阅读说明：本技术 一种自伸长隆起的预警式变压器 (Early warning type transformer capable of bulging by self-extension ) 是由 周妍 于 2021-09-25 设计创作，主要内容包括：本发明公开了一种自伸长隆起的预警式变压器,属于变压器领域,一种自伸长隆起的预警式变压器,通过在变压器表面中部热折叠架的设置,当变压器表面温度过高时,热裂杆膨胀炸裂,使自伸长叠管快速向外延伸膨胀,并拉动热拱覆片,使热拱覆片由片状逐渐向中部合拢,从而呈现隆起状,进而实现对工作人员产生双重形变预警的效果,进而在视觉上及时提醒工作人员温度的异常情况,便于工作人员及时进行人工干预,及时消除或减小安全隐患,另外在自伸长叠管膨胀过程中,当自伸长叠管表面变色时,说明变压器温度的异常升高情况已经较为紧急,实现对工作人员的预警升级。(The invention discloses a self-extending bulged early warning transformer, belonging to the field of transformers, and the self-extending bulged early warning transformer is characterized in that a hot folding frame is arranged in the middle of the surface of the transformer, when the surface temperature of the transformer is overhigh, the hot cracking rod expands and bursts, so that the self-extending laminated pipe extends and expands outwards rapidly, and the hot arched covering sheet is pulled to be gradually folded from the sheet shape to the middle part, thereby presenting a bulge shape, thereby realizing the effect of double deformation early warning on the working personnel, further visually reminding the abnormal condition of the temperature of the working personnel in time, facilitating the working personnel to carry out manual intervention in time, eliminating or reducing the potential safety hazard in time, in addition, in the expansion process of the self-extending laminated tube, when the surface of the self-extending laminated tube changes color, the abnormal rising condition of the temperature of the transformer is indicated to be urgent, and early warning upgrading of workers is realized.)

1. The utility model provides a from early warning formula transformer of extension uplift, includes transformer body (1), a plurality of evenly distributed's of transformer body (1) outer end fixedly connected with heat dissipation scale (2), its characterized in that: the transformer comprises a transformer body (1), an outer support plate (3) connected to the outer ends of the two columns (4), an early warning column (5) connected between the middle of the outer support plate (3) and the transformer body (1), and a self-extending folding tube (6) connected to the outer end of the outer support plate (3), wherein the hot folding frame comprises the two columns (4) fixedly connected with the transformer body (1), the outer support plate (3) connected to the outer end of the two columns (4), the self-extending folding tube (6) corresponds to the early warning column (5), the two columns (4) are respectively positioned at the upper side and the lower side of the radiating scale (2), the outer support plate (3) is positioned outside the radiating scale (2), two sliding grooves (31) symmetrical about the self-extending folding tube (6) are drilled on the surface of the outer support plate (3), fluorescent strips are attached to the inner bottom ends of the sliding grooves (31), and two thermal arch pieces (7) are slidably connected to the sliding grooves (31), a pull rope (8) is connected between the hot arch cover sheet (7) and the self-extending pipe stack (6), a hot cracking rod is fixedly connected inside the early warning column (5), high-heat-conducting gas is filled in the early warning column (5), a vent hole is drilled in the middle of the outer support plate (3), one end, close to the transformer body (1), of the hot cracking rod is fixedly connected with the early warning column (5), the other end of the hot cracking rod is abutted against the surface of the outer support plate (3), and the end of the hot cracking rod completely blocks the vent hole;

the hot arched cover sheet (7) comprises a plurality of connecting rods (72) and a plurality of pre-changed patches (71) connected between two adjacent connecting rods (72), a spherical sliding block (73) is fixedly connected to the lower end of the middle of each connecting rod (72), the spherical sliding block (73) is in sliding connection with a sliding groove (31), one end of a pull rope (8) is fixedly connected with the connecting rod (72) farthest from the self-extending laminated tube (6), the pull rope (8) movably penetrates through other connecting rods (72), the hot cracking rod comprises a heat conducting rod (91) fixedly connected with the inner wall of the early warning column (5) and an early warning cracking tube (92) connected to the end of the heat conducting rod (91), the early warning cracking tube (92) is abutted against the outer supporting plate (3), ethanol is filled in the early warning cracking tube (92), the ethanol filling degree is not higher than 70%, the self-extending laminated tube (6) comprises an extending shaping end (61) and a laminated ring connected between the extending shaping end (61) and the outer supporting plate (3), the laminated ring comprises a pre-stretching outer section (621) and a pre-stretching flat section (622) positioned on the inner side of the pre-stretching outer section (621), and the pull rope (8) is connected with the extension shaping end (61).

2. The self-elongating crowned early warning transformer as recited in claim 1, wherein: the pre-variable patch (71) is of an arc elastic structure which arches outwards, the spherical sliding block (73) is magnetic, and the outer supporting plate (3) is made of ferromagnetic materials.

3. The self-elongating crowned early warning transformer as recited in claim 1, wherein: the heat conducting rod (91) is of a heat conducting structure, the early warning cracking pipe (92) is made of a brittle material, and the ethanol is diluted by water to enable the concentration to be lower than 50%.

4. The self-elongating crowned early warning transformer as recited in claim 1, wherein: the pre-extended outer section (621) is in a folded state, and the pre-extended flat section (622) is in an elastic loose structure.

5. The self-elongating crowned early warning transformer as recited in claim 1, wherein: the utility model discloses a liquid storage bag, including extension end (61), limit ring, liquid guide slot hole (14) and liquid storage bag (10) edge matching, and liquid guide slot hole (14) intercommunication stromatolite ring and liquid storage bag (10), the extension is stereotyped and is held (61) inside fixedly connected with liquid storage bag (10) and limit ring between extension flat section (622), the limit ring is located liquid storage bag (10) and is close to one side of outer fagging (3), it has a plurality of liquid guide slot holes (14) to open the chisel in extension stereotyped end (61).

6. The self-elongating crowned early warning transformer as recited in claim 5, wherein: the liquid storage bag (10) comprises an elastic pasting ring (102) fixedly connected to the end part of the elastic pasting ring (102) at the edge and the inner wall of the extension shaping end (61) and a plurality of liquid blocking balls (103) corresponding to the stand column (4) respectively, the liquid blocking balls (103) are fixedly connected to the joints of the concave arc piece (101) and the elastic pasting ring (102), the end part of the liquid blocking balls (103) extends to the inner side of the liquid storage bag (10) and is connected with an elastic rope (11), the other end of the elastic rope (11) is fixed with an outer supporting plate (3), and the space enclosed by the inner wall of the extension shaping end (61) and the concave arc piece (101) is filled with color liquid.

7. The self-elongating crowned early warning transformer as recited in claim 5, wherein: the cotton velvet particle (13) comprises a color absorbing velvet tail (131), a floating ball layer (133) fixedly connected to the end part of the color absorbing velvet tail (131) and an outer wrapping water-soluble layer (132) wrapping the outside of the floating ball layer (133), and helium is filled in the floating ball layer (133).

Technical Field

The invention relates to the field of transformers, in particular to a self-extending bulged early warning type transformer.

Background

A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). Transformer cooling is the dissipation of heat generated by an operating transformer by some means. During transformer operation, heat generated by losses in the windings and core must be dissipated in time to avoid insulation damage due to overheating. For a small-capacity transformer, the ratio of the external surface area to the volume of the transformer is relatively large, and heat can be dissipated by radiation and natural convection in a self-cooling mode.

The transformer can produce a large amount of heats when the operation, thereby sets up the heat dissipation scale increase heat radiating area on the transformer surface usually among the prior art, reaches radiating effect, when in-service use, has the abnormal conditions of high temperature, when taking place the temperature anomaly, if not in time carry out artificial intervention's maintenance to this unusual high temperature, influences the safe operation of transformer easily, has certain potential safety hazard even.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a self-extending and bulging early warning transformer, through the arrangement of a hot folding frame in the middle of the surface of the transformer, when the temperature of the surface of the transformer is too high, a hot cracking rod expands and bursts, a self-extending and bulging pipe is enabled to extend and expand outwards quickly, a hot arch cover sheet is pulled, the hot arch cover sheet is enabled to be folded from a sheet shape to the middle part gradually, so that the bulging shape is presented, the effect of double deformation early warning on workers is achieved, the abnormal temperature condition of the workers is visually and timely reminded, the workers can conveniently perform manual intervention in time, the potential safety hazard is eliminated or reduced in time, in addition, in the expansion process of the self-extending and bulging pipe, when the surface of the self-extending and bulging pipe changes color, the abnormal rising condition of the temperature of the transformer is relatively emergent, and the early warning on the workers is achieved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A self-extending uplifted early warning type transformer comprises a transformer body, wherein a plurality of uniformly distributed heat dissipation scales are fixedly connected to the outer end of the transformer body, a heat folding frame is fixedly connected to the left and right outer ends of the transformer body and comprises two stand columns fixedly connected with the transformer body, an outer support plate connected to the outer ends of the two stand columns, an early warning column connected between the middle of the outer support plate and the transformer body, and a self-extending folding tube connected to the outer end of the outer support plate, the self-extending folding tube corresponds to the early warning column, the two stand columns are respectively positioned at the upper side and the lower side of each heat dissipation scale, the outer support plate is positioned at the outer side of each heat dissipation scale, two sliding grooves symmetrical to each other about the self-extending folding tube are chiseled on the surface of the outer support plate, fluorescent strips are attached to the inner bottom ends of the sliding grooves, and when the heat dissipation scales are folded due to abnormal high temperature, the fluorescent strips emit light, the eye-catching performance is improved, and the early warning effect is better, the two chutes are connected with hot arched covering pieces in a sliding manner, pull ropes are connected between the hot arched covering pieces and the self-extending folding pipe, a hot cracking rod is fixedly connected inside the early warning post, high heat-conducting gas is filled in the early warning post, a vent hole is drilled in the middle of the outer support plate, one end, close to the transformer body, of the hot cracking rod is fixedly connected with the early warning post, the other end of the hot cracking rod is abutted against the surface of the outer support plate, the end of the hot cracking rod completely blocks the vent hole, through the arrangement of the outer support plate in the middle of the surface of the transformer, when the temperature of the surface of the transformer is too high, the hot cracking rod expands and bursts, the self-extending folding pipe rapidly extends and expands outwards, and the hot arched covering pieces are pulled, so that the hot arched covering pieces are gradually folded towards the middle from a sheet shape, a bulge shape is formed, a timely early warning effect is achieved for workers, and abnormal conditions of the temperature of the workers are timely warned visually, the staff of being convenient for in time carries out manual intervention, in time eliminates or reduces the potential safety hazard, is extending the stay tube inflation in addition, when extending the stay tube surface and discolour certainly, explains that the unusual rising condition of transformer temperature has been comparatively urgent, realizes the early warning upgrading to the staff.

Further, the hot arch cover sheet comprises a plurality of connecting rods and a plurality of pre-variable patches connected between two adjacent connecting rods, a spherical sliding block is fixedly connected to the lower end of the middle of each connecting rod and is connected with a sliding groove in a sliding mode, one end of each pulling rope is fixedly connected with the connecting rod which is farthest from the extending folding pipe, the pulling ropes movably penetrate through other connecting rods, when the extending folding pipe extends outwards, the connecting rods are sequentially pulled from two sides to the middle through the pulling ropes, the folding bulges of the pre-variable patches are achieved, and the early warning effect on workers is achieved.

Furthermore, the pre-variable patches are of arc-shaped elastic structures which are arched outwards, so that when the connecting rod is under tension, the connecting rod is easy to deform by continuously arching outwards on the basis of arching of the pre-variable patches, the spherical sliding blocks are magnetic, the outer supporting plates are made of ferromagnetic materials, and when the spherical sliding blocks are in the sliding grooves, certain mutual adsorption force exists between the spherical sliding blocks and the outer supporting plates, so that the situation that under the condition that abnormal high temperature does not occur, the pre-variable patches are not easy to fold towards the self-extending overlapped pipe is effectively guaranteed, and in addition, the pre-variable patches are debugged, so that the magnetism of the spherical sliding blocks is relatively small, the debugging can be assisted, and large resistance is not caused by folding deformation of the pre-variable patches.

Furthermore, the hot cracking rod comprises a heat conducting rod fixedly connected with the inner wall of the early warning column and an early warning cracking tube connected to the end of the heat conducting rod, the early warning cracking tube is abutted against the outer supporting plate, and ethanol is filled in the early warning cracking tube, wherein the filling degree of the ethanol is not higher than 70%.

Furthermore, the heat conducting rod is of a heat conducting structure, the early warning cracking pipe is made of a brittle material, the concentration of the ethanol is reduced to be lower than 50% through water dilution, the ethanol is not easy to spontaneously combust, the potential safety hazard is reduced, when abnormal high temperature occurs to enable the temperature of the hot cracking rod to be abnormal, the ethanol is vaporized at high temperature, so that large expansion extrusion force is generated on the early warning cracking pipe to enable the early warning cracking pipe to be spalled, and the self-extending laminated pipe is expanded after expanded ethanol steam enters the self-extending laminated pipe.

Furthermore, the self-extending folding pipe comprises an extending shaping end and a laminating ring connected between the extending shaping end and the outer support plate, the laminating ring comprises a pre-extending outer section and a pre-extending flat section positioned on the inner side of the pre-extending outer section, the pull rope is connected with the extending shaping end, after the hot-cracking rod is burst, the pre-extending outer section is stretched under the expansion action of expanded ethanol steam and high heat-conducting gas, the extending shaping end extends outwards, and therefore the pull rope is pulled, and the pre-changing patches are gradually folded and raised from two sides to the middle.

Further, the pre-stretching outer section is in a folded state, and the pre-stretching flat section is of an elastic loose structure, so that the self-stretching folding pipe can be conveniently stretched outwards.

Furthermore, the cotton velvet particles are filled between the pre-stretching outer section and the pre-stretching flat section, the liquid storage bag and the limiting ring are fixedly connected inside the extension shaping end, the limiting ring is located on one side, close to the outer supporting plate, of the liquid storage bag, a plurality of liquid guide slots are formed in the extension shaping end and are matched with the edges of the liquid storage bag, the liquid guide slots are communicated with the laminated ring and the liquid storage bag, when the self-stretching laminated pipe extends outwards, the liquid plugging ball is pulled by the elastic rope to be separated from the liquid guide slots, and then the color liquid permeates into the laminated ring along the liquid guide slots, so that the cotton velvet particles are adsorbed and discolored, the stretched self-stretching laminated pipe is in a color state, the early warning striking degree is improved, meanwhile, the condition of temperature abnormity is relatively serious, the working personnel can maintain the pipe in time, and potential safety hazards are reduced.

Further, the liquid reserve bag includes that edge and the fixed elasticity of epitaxial design end inner wall paste ring fixed connection paste the sunken arc piece of ring tip and a plurality of block up liquid ball corresponding with the stand respectively, block up liquid ball fixed connection pastes the ring junction at sunken arc piece and elasticity, and blocks up the liquid ball tip and extend to the liquid reserve bag inboard and be connected with the bullet rope, the bullet rope other end is fixed with the outer brace plate, the space intussuseption that sunken arc piece and epitaxial design end inner wall enclose is filled with colored liquid, and the bullet rope is elastic construction, and its elasticity limit is less than the extendible scope of fold pipe from the extension, and when making at unusual high temperature from the extension fold pipe last extension, the bullet rope breaks after surpassing the elasticity limit, reduces the constraint to the extension of fold pipe from the extension, is difficult for continuing simultaneously pulling the liquid reserve bag, makes its inside colored liquid difficult to leak to whole fold intraductally from the extension.

Furthermore, the cotton velvet particles comprise color absorbing velvet tails, a floating ball layer fixedly connected to the tail end of the color absorbing velvet and an outer wrapping water-soluble layer wrapping the floating ball layer, the outer wrapping water-soluble layer is used for balancing weight, the cotton velvet particles are not prone to attaching to the inner wall of the pre-extending outer section under normal conditions, helium is filled in the floating ball layer, and after color liquid enters the pre-extending outer section and the pre-extending flat section, the outer wrapping water-soluble layer is water-soluble, the floating ball layer is exposed and expands under the high-temperature condition, so that hairiness has certain buoyancy and gathers to the upper inner wall of the pre-extending outer section, the color of the self-extending overlapped pipe is changed more obviously, and the early warning effect is better.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through the setting at transformer surface middle part outer stay plate, when transformer surface temperature was too high, hot crack pole inflation is exploded, make the outside inflation that extends fast of fold pipe from extending, and stimulate hot cover sheet that encircles, make hot cover sheet that encircles fold to the middle part by the slice gradually, thereby appear the form of heaving, and then realize producing the effect of timely early warning to the staff, and then in time remind the abnormal conditions of staff's temperature in the vision, the staff of being convenient for in time carries out artificial intervention, in time eliminate or reduce the potential safety hazard.

(2) In addition, in the expansion process of the self-extending laminated tube, when the surface of the self-extending laminated tube changes color, the abnormal rising condition of the temperature of the transformer is indicated to be urgent, and early warning upgrading of workers is realized.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of a cross section of the present invention;

FIG. 3 is a schematic structural view of a hot folding stand according to the present invention;

FIG. 4 is a schematic structural view illustrating outward elongation of a thermal folding leg when removing a thermal arch cover according to the present invention;

FIG. 5 is a schematic side view of a hot folding leg according to the present invention;

FIG. 6 is a schematic bottom view of a thermal arched cover sheet of the present invention;

FIG. 7 is a schematic view of the structure of the thermal arched cover sheet according to the present invention when the temperature rises abnormally;

FIG. 8 is a schematic view of the structure of the self-elongating tube stack of the present invention;

FIG. 9 is a schematic view of the structure at A in FIG. 8;

FIG. 10 is a schematic view of a reservoir of the present invention;

FIG. 11 is a schematic view of the stretched self-elongating laminate tube of the present invention;

FIG. 12 is a schematic view of the structure at B in FIG. 11;

fig. 13 is a schematic structural view of the lint grain of the present invention.

The reference numbers in the figures illustrate:

1 transformer body, 2 heat dissipation scales, 3 outer supporting plates, 31 sliding grooves, 4 upright posts, 5 early warning posts, 6 self-extension superposed pipes, 61 extension shaping ends, 621 pre-extension outer sections, 622 pre-extension flat sections, 7 thermal arch covering pieces, 71 pre-change patches, 72 connecting rods, 73 spherical sliding blocks, 8 pull ropes, 91 heat conducting rods, 92 early warning split pipes, 10 liquid storage bags, 101 concave arc pieces, 102 elastic attaching rings, 103 liquid plugging balls, 11 elastic ropes, 13 cotton velvet particles, 131 color absorbing velvet tails, 132 outer water-soluble layers, 133 floating ball layers and 14 liquid guiding slotted holes.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-2, a self-extending bulged early warning transformer comprises a transformer body 1, a plurality of uniformly distributed heat dissipation scales 2 are fixedly connected to the outer end of the transformer body 1, a hot folding rack is fixedly connected to the left and right outer ends of the transformer body 1, the hot folding rack comprises two upright posts 4 fixedly connected with the transformer body 1, an outer supporting plate 3 connected to the outer ends of the two upright posts 4, an early warning post 5 connected between the middle part of the outer supporting plate 3 and the transformer body 1, and a self-extending overlapped tube 6 connected to the outer end of the outer supporting plate 3, the self-extending overlapped tube 6 corresponds to the early warning post 5, the two upright posts 4 are respectively located at the upper side and the lower side of the heat dissipation scales 2, and the outer supporting plate 3 is located at the outer side of the heat dissipation scales 2.

Referring to fig. 3-5, the outer brace 3 has two sliding grooves 31 cut on its surface and symmetrical with respect to the self-extending tube stack 6, and a fluorescent strip is attached to the bottom of the sliding groove 31, and when the thermal arch cover 7 is closed due to an abnormally high temperature, the fluorescent strip emits light to improve the visibility and improve the early warning effect, the thermal arch cover 7 is slidably connected to both sliding grooves 31, and a pull rope 8 is connected between the thermal arch cover 7 and the self-extending tube stack 6.

Referring to fig. 6, the thermal arching sheet 7 includes a plurality of connecting rods 72, a plurality of pre-changed patches 71 connected between two adjacent connecting rods 72, a spherical slider 73 is fixedly connected to the lower end of the middle of the connecting rod 72, the spherical slider 73 is slidably connected to the chute 31, one end of the pull cord 8 is fixedly connected to the connecting rod 72 farthest from the extended pipe stack 6, and the pull cord 8 movably penetrates through other connecting rods 72, when extending outward from the extended pipe stack 6, as shown in fig. 7, the plurality of connecting rods 72 are sequentially pulled from both sides to the middle by the pull cord 8, so as to realize the folding and bulging of the plurality of pre-changed patches 71, and realize the warning function for the operator, the pre-changed patches 71 are of an outwardly arched arc-shaped elastic structure, so that when the connecting rod 72 is under tension, the connecting rod 72 is likely to continuously deform outwardly on the basis of its own arching, the spherical slider 73 has magnetism, and the outer supporting plate 3 is made of ferromagnetic material, so that when the spherical slider 73 is in the chute 31, and the outer supporting plate 3, thereby effectively ensuring that the plurality of pre-variable patches 71 are not easy to fold towards the self-extending folding pipe 6 under the condition of no abnormal high temperature, and debugging is carried out during the setting process, so that the magnetism of the spherical sliding block 73 is relatively small, the debugging can be assisted, but the folding deformation of the pre-variable patches 71 is not easy to cause large resistance.

Referring to fig. 8, a hot cracking rod is fixedly connected inside the early warning column 5, a high thermal conductive gas is filled in the early warning column 5, a vent hole is cut in the middle of the outer support plate 3, one end of the hot cracking rod, which is close to the transformer body 1, is fixedly connected with the early warning column 5, the other end of the hot cracking rod is abutted against the surface of the outer support plate 3, and the end of the hot cracking rod completely blocks the vent hole, the hot cracking rod includes a heat conducting rod 91 fixedly connected with the inner wall of the early warning column 5 and an early warning cracking tube 92 connected to the end of the heat conducting rod 91, the early warning cracking tube 92 is abutted against the outer support plate 3, the early warning cracking tube 92 is filled with ethanol, the filling degree of the ethanol is not higher than 70%, the heat conducting rod 91 is of a heat conducting structure, the early warning cracking tube 92 is made of a brittle material, the concentration of the ethanol is lower than 50% by diluting with water, so that the ethanol is not easy to ignite, thereby reducing the potential safety hazard, when abnormal high temperature occurs, the ethanol is under the high temperature condition, the vaporization generates a large expansion extrusion force on the early warning cracking pipe 92 to cause the early warning cracking pipe to be cracked, and the self-extending folding pipe 6 is expanded after the expanded ethanol steam enters the self-extending folding pipe 6.

It should be noted that the limit bearing temperature of the hot cracking rod is set according to the allowable limit high temperature of the transformer, and the limit bearing temperature of the hot cracking rod is close to and lower than the limit high temperature of the transformer, so that a technician can control the limit bearing temperature of the hot cracking rod by debugging and testing the thickness of the early warning cracking tube 92.

As shown in fig. 8-9, the self-extending laminated tube 6 includes an extending shaping end 61 and a laminated ring connected between the extending shaping end 61 and the outer support plate 3, the laminated ring includes a pre-extending outer section 621 and a pre-extending flat section 622 located inside the pre-extending outer section 621, the pulling rope 8 is connected to the extending shaping end 61, after the thermal cracking rod is burst, the pre-extending outer section 621 is pulled under the expansion action of the expanding ethanol vapor and the high heat-conductive gas, the extending shaping end 61 extends outward, so as to pull the pulling rope 8, the pre-deformed patches 71 are gradually folded from two sides to the middle part to be raised, the pre-extending outer section 621 is in a folded state, and the pre-extending flat section 622 is in an elastic loose structure, so as to facilitate the extending of the self-extending laminated tube 6 outward.

Through the setting at transformer surface middle part outer support plate 3, when transformer surface temperature was too high, the hot crack pole inflation explodes and splits, as figure 4 and figure 7, make the outside expansion that extends fast of extending folded tube 6, and the hot cover piece 7 that encircles of pulling, make hot cover piece 7 that encircles fold to the middle part by the slice gradually, thereby appear the form of heaving, and then realize producing the effect of timely early warning to the staff, and then in time remind the unusual situation of staff's temperature in the vision, the staff of being convenient for in time carries out manual intervention, in time eliminate or reduce the potential safety hazard.

Example 2:

as shown in fig. 9, the lint particles 13 are filled between the pre-stretching outer section 621 and the pre-stretching flat section 622, the liquid storage bag 10 and the limiting ring are fixedly connected inside the extension shaping end 61, the limiting ring is located on one side of the liquid storage bag 10 close to the outer supporting plate 3, a plurality of liquid guiding slots 14 are formed in the extension shaping end 61, the liquid guiding slots 14 are matched with the edges of the liquid storage bag 10, and the liquid guiding slots 14 are communicated with the laminated ring and the liquid storage bag 10, as shown in fig. 11-12, when the self-stretching laminated tube 6 extends outwards, the elastic rope 11 pulls the liquid blocking ball 103 to be separated from the liquid guiding slots 14, so that the color liquid permeates into the laminated ring along the liquid guiding slots 14, the lint particles 13 are adsorbed and discolored, the stretched self-stretching laminated tube 6 is in a color state, the early warning striking degree is improved, and the condition of abnormal temperature is relatively serious, so that a worker can timely maintain and reduce the potential safety hazard.

Referring to fig. 10, the reservoir 10 includes a concave arc plate 101 having an edge fixed to the inner wall of the extension shaping end 61 and an elastic attachment ring 102 fixedly connected to an end of the elastic attachment ring 102, and a plurality of liquid blocking balls 103 respectively corresponding to the pillars 4, the liquid blocking balls 103 are fixedly connected to a connection portion of the concave arc plate 101 and the elastic attachment ring 102, and the end of the liquid blocking ball 103 extends to the inner side of the liquid storage bag 10 and is connected with the elastic rope 11, the other end of the elastic rope 11 is fixed with the outer supporting plate 3, the space enclosed by the concave arc sheet 101 and the inner wall of the extension shaping end 61 is filled with color liquid, as shown in figure 11, the elastic rope 11 is an elastic structure, and the elastic limit is less than the extensible range of the self-extending stacked tube 6, so that when the self-extending stacked tube 6 is continuously extended at an abnormally high temperature, the elastic rope 11 breaks after exceeding the elastic limit, reduces the restriction on the extension of the self-extending folding pipe 6, meanwhile, the liquid storage bag 10 is not easy to pull continuously, so that the color liquid in the liquid storage bag is not easy to leak into the whole self-extending laminated tube 6.

In the expansion process of the self-extending laminated tube 6, when the surface of the self-extending laminated tube 6 changes color, the abnormal rising condition of the temperature of the transformer is relatively urgent, and the early warning upgrade of workers is realized.

Correspondingly, the pre-stretched outer section 621 is configured to be transparent in this embodiment, and the above technical features are added in this embodiment, and the rest is the same as that in embodiment 1.

Example 3:

referring to fig. 13, the cotton velvet particle 13 includes a color absorbing velvet tail 131, a floating ball layer 133 fixedly connected to an end of the color absorbing velvet tail 131, and an outer wrapping water soluble layer 132 wrapping the floating ball layer 133, where the outer wrapping water soluble layer 132 is used for weighting, so that the cotton velvet particle 13 is not easily attached to the inner wall of the pre-extended outer section 621 under normal conditions, the floating ball layer 133 is filled with helium, and after the color liquid enters the pre-extended outer section 621 and the pre-extended flat section 622, the outer wrapping water soluble layer 132 is water soluble, and the floating ball layer 133 is exposed and expands at high temperature, so that the hairiness has a certain buoyancy and gathers to the upper inner wall of the pre-extended outer section 621, thereby making the color change of the self-extended overlapped pipe 6 more obvious, and the early warning effect better.

This example was identical to example 2 except that the lint particles 13 were not changed.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.