An electrical maintenance safety auxiliary device for thermal power plants

Abstract

The present invention discloses a safety auxiliary device for electrical maintenance of a thermal power plant, and the present invention relates to the field of electrical maintenance technology. The safety auxiliary device for electrical maintenance of a thermal power plant facilitates the rapid connection and sealing of a sealed shell and a storage shell through the setting of a self-locking sealing unit, and can realize self-locking. When the sealed shell and the storage shell need to be separated, it can be realized by simply bending the push rod therein. Through the setting of the lower bending and tightening unit, it is convenient to fix the hollow plug column through the convenience of one-way rotation, thereby realizing the rapid assembly and fixation of the auxiliary measurement and control device body, and the disassembly convenience is high. At the same time, during the fixing process, the seal between the hollow plug column and the jack can also be strengthened to prevent external moisture from entering the inside of the maintenance shell. The whole process can be realized by only pushing the driving bending shaft, and the sealing and the fixing combination of the auxiliary measurement and control device body are realized synchronously, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical maintenance, and particularly to a safety auxiliary device for electrical maintenance in a thermal power plant. Background Art

[0002] At present, nearly 70% of the electricity in China still comes from thermal power plants. Ensuring the safety of all links in the power production of thermal power plants is the prerequisite for realizing sufficient and timely power supply. With the current implementation of unit capacity increase and power consumption reduction, there are more and more electrical equipment, and the monitoring and handling of faults have become more difficult. The maintenance of equipment urgently needs to be optimized and strengthened in order to avoid or minimize losses and damages in this regard, and fundamentally improve the availability and reliability of electrical equipment to meet people's needs for electrical equipment. A thermal power plant, abbreviated as a power plant, is a factory that uses combustibles as fuel to produce electric energy. The wire circuits laid in the thermal power plant are generally strictly maintained to prevent damage to high-voltage wires and cause safety hazards. When maintaining high-voltage wires, it is necessary to first check whether the wires or items are charged. Generally, an auxiliary measurement and control device is required for maintenance. The existing auxiliary measurement and control devices are generally installed on the maintenance housing. When installing with the maintenance housing, sometimes installation holes are reserved, but generally bolts are used for fixed installation, which is more troublesome, with low operation efficiency. Moreover, when assembling the housing of the measurement and control device, bolts are also mostly used. When maintaining the internal components, it is necessary to disassemble and assemble the whole with tools such as screwdrivers, and the operation convenience is poor. Therefore, the present invention proposes a safety auxiliary device for electrical maintenance in a thermal power plant to solve the above-mentioned problems. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a safety auxiliary device for electrical maintenance in a thermal power plant, which solves the problems mentioned in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A safety auxiliary device for electrical maintenance in a thermal power plant includes an auxiliary measurement and control device body disposed in front of a maintenance housing. The auxiliary measurement and control device body includes a storage shell and a sealed housing. A measurement and control display screen is disposed on the sealed housing. A self-locking sealing unit is disposed between the storage shell and the sealed housing, and the self-locking sealing unit is used to achieve locking and sealing between the storage shell and the sealed housing. A hollow insertion post is disposed at the rear of the storage shell. A jack matching the hollow insertion post is penetrated and opened on the maintenance housing. A protective sleeve is fixed at the rear of the sealed housing, and the protective sleeve is located outside the hollow insertion post. A downward-bending pressing unit is disposed between the hollow insertion post and the maintenance housing, and the downward-bending pressing unit is used to stably fix the hollow insertion post in the jack and improve the sealing performance between the hollow insertion post and the jack at the same time.

[0005] Preferably, the self-locking sealing unit includes two abutting boxes fixed on the storage shell and the sealing outer shell. On one side of the two abutting boxes that are mutually attached, folding strips are provided. At the ends of the two folding strips, semi-circular strips are provided. Semi-circular blocks are rotatably installed on the inner walls of the two semi-circular strips. The two semi-circular blocks are spliced together. Push rods are fixed on the outer circumferences of the two semi-circular blocks. A tension spring is fixed between the adjacent push rod and the abutting box. An arc-shaped groove adapted to the push rod is formed on the surface of the semi-circular strip. A strip-shaped groove adapted to the push rod is formed on the outer side of the abutting box. A rear fitting sealing strip is fixed on the outer circumference of the storage shell. A front fitting sealing strip for cooperating with the rear fitting sealing strip is fixed on the outer circumference of the sealing outer shell.

[0006] Preferably, the downward bending and pressing unit includes a rotating rod rotatably installed at the center of the inner wall of the hollow insertion post. A disc body is fixed on the surface of the rotating rod. Three arc-shaped push blocks are evenly distributed and fixed on the surface of the disc body. Three abutting rods are slidably installed on the surface of the hollow insertion post at equal intervals. A friction pad is fixed at the end of the abutting rod. An inner magnetic ring is fixed on the surface of the abutting rod. An outer magnetic ring for cooperating with the inner magnetic ring is fixed on the inner wall of the hollow insertion post. A self-locking hollow disc is fixed on the inner wall of the hollow insertion post through a support rod. The rotating rod passes through and rotates through the self-locking hollow disc. A locking ratchet is fixed on the surface of the rotating rod. A locking tooth for cooperating with the locking ratchet is slidably penetrated through the surface of the self-locking hollow disc. A locking spring is fixed between the locking tooth and the self-locking hollow disc. A transmission rope is fixed outside the locking tooth. A buckle is fixed at the end of the transmission rope. A driving bending shaft is fixed on the surface of the rotating rod.

[0007] Preferably, a ring body is fixed on the surface of the hollow insertion post. A front sealing ring is fixed behind the ring body. A rear sealing ring for cooperating with the front sealing ring is fixed in front of the maintenance outer shell. An annular fitting groove is provided behind the front sealing ring. An embedding ring for cooperating with the annular fitting groove is provided in front of the rear sealing ring. The front sealing ring is of a hollow design. A gas injection unit is provided between the driving bending shaft and the hollow insertion post. The gas injection unit is used to automatically input air into the front sealing ring when the driving bending shaft is pressed down and fixed, so that it deforms.

[0008] Preferably, the gas injection unit includes a gas injection cylinder fixed on the surface of the hollow insertion post. A gas injection piston is movably installed in the inner wall of the gas injection cylinder. A spring block is fixed inside the gas injection cylinder. A return spring is fixed between the spring block and the gas injection piston. An extrusion rod is fixed behind the gas injection piston. The gas injection cylinder is communicated with the front sealing ring through a conduit. A curved surface block for cooperating with the extrusion rod is slidably installed on the surface of the hollow insertion post. An arc-shaped sliding groove for cooperating with the curved surface block is formed on the surface of the hollow insertion post. The curved surface block is fixed to the driving bending shaft through a connecting rod.

[0009] Preferably, an inner opening groove for use with the driving shaft is formed on the surface of the hollow plug, and an outer opening groove for use with the driving shaft is formed on the surface of the protective sleeve.

[0010] Preferably, the end of the locking tooth that contacts the locking ratchet is designed to be in a slope shape, so as to limit the locking ratchet to rotate in only one direction.

[0011] Preferably, the annular fitting groove is designed to be narrow inside and wide outside, the embedded ring is integrally formed with the rear sealing ring, and the outer contour of the embedded ring is a truncated cone shape, which is used in fit with the annular fitting groove.

[0012] Beneficial Effects

[0013] The present invention provides a safety auxiliary device for electrical maintenance of thermal power plants. Compared with the prior art, it has the following beneficial effects:

[0014] The electrical maintenance safety auxiliary device of the thermal power plant is convenient for quickly connecting and sealing the sealing shell and the storage shell through the setting of the self-locking sealing unit, and can achieve self-locking. When the sealing shell and the storage shell need to be separated, it can be achieved by simply bending the push rod therein. Through the setting of the lower bending and tightening unit, it is convenient to fix the hollow plug column through one-way rotation, thereby realizing rapid assembly and fixation of the auxiliary measurement and control device body, and the disassembly is easy. At the same time, during the fixing process, the seal between the hollow plug column and the socket can be strengthened to prevent external moisture from entering the inside of the maintenance shell. The whole process can be achieved by pushing the driving bending shaft, and the fixing combination of the seal and the auxiliary measurement and control device body is realized simultaneously, and the operation is easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the disassembly of the protective cover of the present invention;

[0017] Figure 3 This is a schematic diagram of the external structure of the hollow plug column of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the front sealing ring of the present invention;

[0019] Figure 5 It is a side view of the structure of the inflator of the present invention;

[0020] Figure 6 This is a schematic diagram of the internal structure of the hollow plug column of the present invention;

[0021] Figure 7 For the present invention Figure 3 A partial enlarged view of the middle A;

[0022] Figure 8 This is a front view of the internal structure of the self-locking hollow disk of the present invention;

[0023] Figure 9 It is a three-dimensional diagram of two abutment boxes spliced ​​together according to the present invention;

[0024] Figure 10 It is a top sectional view of two abutment boxes spliced ​​together according to the present invention.

[0025] In the figure: 1-inspection shell, 2-storage shell, 3-sealed shell, 4-measurement and control display screen, 5-self-locking sealing unit, 51-abutment box, 52-folding strip, 53-semicircular strip, 54-semicircular block, 55-push rod, 56-tension spring, 57-arc groove, 58-bar groove, 59-rear laminating sealing strip, 510-front laminating sealing strip, 6-hollow plug column, 7-plug hole, 8-protective sleeve, 9-lower bending and tightening unit, 91-rotating rod, 92-arc push block, 93-tightening rod, 94-friction pad, 95-inner magnetic ring, 96-outer magnetic ring, 97-support rod, 98-self-locking hollow Disk, 99-locking ratchet, 910-locking tooth, 911-locking spring, 912-transmission rope, 913-buckle, 914-driving shaft, 915-ring body, 916-front sealing ring, 917-rear sealing ring, 918-annular fitting groove, 919-embedded ring, 920-disk body, 10-inflating unit, 101-inflating cylinder, 102-inflating piston, 103-spring block, 104-reset spring, 105-extrusion rod, 106-conduit, 107-curved block, 108-arc slide groove, 109-connecting rod, 11-inner opening groove, 12-outer opening groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 - 10, the present invention provides a technical solution: a safety auxiliary device for electrical maintenance in a thermal power plant, including an auxiliary measurement and control device body arranged in front of the maintenance housing 1. The auxiliary measurement and control device body includes a storage shell 2 and a sealed housing 3. Inside the storage shell 2, there are components such as a measurement and control chip (not shown in the drawings, which is prior art here). The storage shell 2 and the sealed housing 3 can fit together. A measurement and control display screen 4 is arranged on the sealed housing 3. A self-locking sealing unit 5 is arranged between the storage shell 2 and the sealed housing 3. The self-locking sealing unit 5 is used to lock and seal between the storage shell 2 and the sealed housing 3, facilitating the disassembly of the sealed housing 3, and thus facilitating the replacement and maintenance of the components inside the storage shell 2. A hollow plug 6 is arranged at the rear of the storage shell 2. A jack 7 matching with the hollow plug 6 is penetrated and opened on the maintenance housing 1. A protective sleeve 8 is fixed at the rear of the sealed housing 3. The protective sleeve 8 has a protective function and is located outside the hollow plug 6. A downward-bending pressing unit 9 is arranged between the hollow plug 6 and the maintenance housing 1. The downward-bending pressing unit 9 is used to stably fix the hollow plug 6 in the jack 7 and at the same time improve the sealing performance between the hollow plug 6 and the jack 7 to prevent water vapor from entering the interior of the maintenance housing 1.

[0028] In this embodiment, the self-locking sealing unit 5 includes two abutting boxes 51 fixed on the storage shell 2 and the sealed housing 3. On one side where the two abutting boxes 51 fit together, there are folding strips 52. At the ends of the two folding strips 52, there are semi-circular strips 53. Semi-circular blocks 54 are rotatably installed on the inner walls of the two semi-circular strips 53. The two semi-circular blocks 54 are spliced together, and the two spliced semi-circular blocks 54 can rotate synchronously. Push rods 55 are fixed on the outer circumferences of the two semi-circular blocks 54. A tension spring 56 is fixed between the adjacent push rods 55 and the abutting box 51. The setting of the tension spring 56 facilitates the rapid rotation of the two semi-circular blocks 54 through the push rods 55 to achieve biting. An arc-shaped groove 57 adapted to the push rod 55 is opened on the surface of the semi-circular strip 53. A strip-shaped groove 58 adapted to the push rod 55 is opened on the outside of the abutting box 51. The push rod 55 is arranged to facilitate the rotation of the semi-circular block 54 and is convenient for separating the two abutting boxes 51. A rear fitting sealing strip 59 is fixed on the outer circumference of the storage shell 2. A front fitting sealing strip 510 matching with the rear fitting sealing strip 59 is fixed on the outer circumference of the sealed housing 3. Through the rapid rotation and biting of the two semi-circular blocks 54, the rear fitting sealing strip 59 and the front fitting sealing strip 510 are made to fit together to achieve sealing.

[0029] In this embodiment, the downward bending and pressing unit 9 includes a rotating rod 91 rotatably installed at the center of the inner wall of the hollow insertion post 6. A disk body 920 is fixed on the surface of the rotating rod 91, and three equally spaced arc-shaped push blocks 92 are fixed on the surface of the disk body 920. Three equally spaced pressing rods 93 are slidably installed on the surface of the hollow insertion post 6. The three pressing rods 93 can be synchronously pressed by the arc-shaped push blocks 92, so that the pressing rods 93 are pressed against the inner wall of the insertion hole 7. A friction pad 94 is fixed at the end of the pressing rod 93. The friction pad 94 is used to increase the friction with the insertion hole 7 to achieve the anti-detachment effect. An inner magnetic ring 95 is fixed on the surface of the pressing rod 93, and an outer magnetic ring 96 that cooperates with the inner magnetic ring 95 is fixed on the inner wall of the hollow insertion post 6. The sides of the inner magnetic ring 95 and the outer magnetic ring 96 that are close to each other are opposite-sex magnetic poles. Using the attraction between opposite-sex magnetic poles, the pressing rod 93 can be quickly reset. A self-locking hollow disk 98 is fixed on the inner wall of the hollow insertion post 6 through a support rod 97. The rotating rod 91 passes through and rotates through the self-locking hollow disk 98. A locking ratchet 99 is fixed on the surface of the rotating rod 91. A locking tooth 910 that cooperates with the locking ratchet 99 slidably penetrates through the surface of the self-locking hollow disk 98. A locking spring 911 is fixed between the locking tooth 910 and the self-locking hollow disk 98. The setting of the locking spring 911 facilitates the locking tooth 910 to fit the surface of the locking ratchet 99. A transmission rope 912 is fixed outside the locking tooth 910. The transmission rope 912 is a non-elastic rope. The material used in this application is a steel wire rope. A buckle 913 is fixed at the end of the transmission rope 912. A driving bending shaft 914 is fixed on the surface of the rotating rod 91. The locking ratchet 99 can be unidirectionally limited by the locking tooth 910, so that the locking ratchet 99 can only rotate in one direction, and then the rotating rod 91 can only rotate unidirectionally. When the driving bending shaft 914 is pushed, it can only be pressed unidirectionally, which is convenient for the friction pad 94 to stably press against the inner wall of the insertion hole 7 and will not loosen. The end of the locking tooth 910 in contact with the locking ratchet 99 is designed in a bevel shape to limit the locking ratchet 99 to only rotate in one direction.

[0030] In this embodiment, a ring body 915 is fixed on the surface of the hollow insertion post 6, a front sealing ring 916 is fixed behind the ring body 915, a rear sealing ring 917 for cooperating with the front sealing ring 916 is fixed in front of the maintenance outer shell 1, an annular fitting groove 918 is arranged behind the front sealing ring 916, an insertion ring 919 for cooperating with the annular fitting groove 918 is arranged in front of the rear sealing ring 917. The front sealing ring 916 is of a hollow design. After being inflated, the front sealing ring 916 deforms to achieve expansion and can restore its original shape after the gas flows out. A gas injection unit 10 is arranged between the driving lever 914 and the hollow insertion post 6. The gas injection unit 10 is used for automatically injecting air into the front sealing ring 916 when the driving lever 914 is pressed down and fixed, so that it deforms. The annular fitting groove 918 is designed with a narrow inner part and a wide outer part. The insertion ring 919 and the rear sealing ring 917 are integrally formed and are both made of rubber material. The outer contour of the insertion ring 919 is in the shape of a frustum of a cone and is used in cooperation with the annular fitting groove 918.

[0031] In this embodiment, the gas injection unit 10 includes a gas injection cylinder 101 fixed on the surface of the hollow insertion post 6. A gas injection piston 102 is movably installed on the inner wall of the gas injection cylinder 101. The gas injection piston 102 has good sealing performance with the gas injection cylinder 101. A spring block 103 is fixed inside the gas injection cylinder 101. A return spring 104 is fixed between the spring block 103 and the gas injection piston 102. The setting of the return spring 104 facilitates driving the gas injection piston 102 to quickly return to its original position. An extrusion rod 105 is fixed behind the gas injection piston 102. The gas injection cylinder 101 is communicated with the front sealing ring 916 through a conduit 106. A curved surface block 107 for cooperating with the extrusion rod 105 is slidably installed on the surface of the hollow insertion post 6. An arc-shaped sliding groove 108 for cooperating with the curved surface block 107 is formed on the surface of the hollow insertion post 6. The curved surface block 107 is fixed to the driving lever 914 through a connecting rod 109. The curved surface block 107 can slide along the surface of the hollow insertion post 6 in an annular track.

[0032] In this embodiment, an inner opening groove 11 for cooperating with the driving lever 914 is formed on the surface of the hollow insertion post 6, and an outer opening groove 12 for cooperating with the driving lever 914 is formed on the surface of the protective sleeve 8. The settings of the inner opening groove 11 and the outer opening groove 12 facilitate the smooth rotation of the driving lever 914. The driving lever 914 can drive the curved surface block 107 to rotate synchronously through the connecting rod 109, which is convenient for the curved surface block 107 to extrude the extrusion rod 105, thereby realizing pushing the gas injection piston 102 to move for inflation. When positioning the entire hollow insertion post 6, the sealing can be strengthened.

[0033] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0034] When in use, when it is necessary to fix the auxiliary measurement and control device body, insert the hollow insertion post 6 into the jack 7 correspondingly, so that the front sealing ring 916 can fit with the rear sealing ring 917, and then the embedding ring 919 can be embedded into the annular fitting groove 918. Then, push down the driving lever 914, which drives the rotating rod 91 to rotate, and then drives the disc body 920 to rotate. Then, through the arc-shaped push block 92, the three pressing rods 93 can be synchronously squeezed, so that the pressing rods 93 are pressed against the inner wall of the jack 7, and the friction pad 94 is used to increase the friction, so as to realize the positioning of the whole hollow insertion post 6. During this process, the driving lever 914 can drive the curved surface block 107 to rotate synchronously through the connecting rod 109, which is convenient for the curved surface block 107 to squeeze the pressing rod 105, and then realize the movement of the air-pumping piston 102 to inflate, so that the front sealing ring 916 can expand, and then the annular fitting groove 918 can fit more tightly with the embedding ring 919, preventing water vapor from entering the maintenance shell 1 through the jack 7.

[0035] When it is necessary to disassemble the auxiliary measurement and control device body, pull the buckle ring 913 outwards, so that the locking teeth 910 are separated from the locking ratchet 99. Then, the driving lever 914 can be rotated upwards in the reverse direction, and the three pressing rods 93 can slide synchronously into the hollow insertion post 6.

[0036] When it is necessary to disassemble the sealing shell 3 and the storage shell 2, pull one of the push rods 55, and then the two semi-circular blocks 54 rotate synchronously. When the push rod 55 is blocked by the arc-shaped groove 57 and the straight edges of the semi-circular blocks 54 are flush with the semi-circular strip 53, the two abutting boxes 51 can be separated, which is convenient for separating the sealing shell 3 and the storage shell 2. When it is necessary to reassemble the sealing shell 3, the corresponding two abutting boxes 51 are spliced, and then after the two semi-circular blocks 54 are spliced, they quickly rotate and engage under the elastic force of the tension spring 56, realizing the stable connection of the two abutting boxes 51, and then realizing the sealed connection of the sealing shell 3 and the storage shell 2.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrical maintenance safety auxiliary device for a thermal power plant, comprising an auxiliary measurement and control device body arranged in front of a maintenance housing (1), the auxiliary measurement and control device body comprising a storage shell (2) and a sealed housing (3), a measurement and control display screen (4) being arranged on the sealed housing (3), characterized in that: A self-locking sealing unit (5) is provided between the storage shell (2) and the sealing shell (3), and the self-locking sealing unit (5) is used to achieve locking and sealing between the storage shell (2) and the sealing shell (3); a hollow plug post (6) is provided at the rear of the storage shell (2); a plug hole (7) for use with the hollow plug post (6) is provided through the inspection shell (1); a protective sleeve (8) is fixed at the rear of the sealing shell (3), and the protective sleeve (8) is located outside the hollow plug post (6); a lower bending and tightening unit (9) is provided between the hollow plug post (6) and the inspection shell (1), and the lower bending and tightening unit (9) is used to stably fix the hollow plug post (6) in the plug hole (7), and at the same time to improve the sealing between the hollow plug post (6) and the plug hole (7); The lower bending and tightening unit (9) comprises a rotating rod (91) rotatably mounted at the center of the inner wall of the hollow plug column (6); a disk body (920) is fixed on the surface of the rotating rod (91); three equally spaced arc-shaped push blocks (92) are fixed on the surface of the disk body (920); three equally spaced tightening rods (93) are slidably mounted on the surface of the hollow plug column (6); a friction pad (94) is fixed at the end of the tightening rod (93); an inner magnetic ring (95) is fixed on the surface of the tightening rod (93); an outer magnetic ring (96) used in conjunction with the inner magnetic ring (95) is fixed on the inner wall of the hollow plug column (6); and the inner wall of the hollow plug column (6) is provided with a plurality of inner magnetic rings (96) for use with the inner magnetic ring (95). A self-locking hollow disk (98) is fixed via a support rod (97); the rotating rod (91) passes through and rotates through the self-locking hollow disk (98); a locking ratchet (99) is fixed to the surface of the rotating rod (91); a locking tooth (910) used in conjunction with the locking ratchet (99) is slidably passed through the surface of the self-locking hollow disk (98); a locking spring (911) is fixed between the locking tooth (910) and the self-locking hollow disk (98); a transmission rope (912) is fixed to the outside of the locking tooth (910); a buckle (913) is fixed to the end of the transmission rope (912); and a driving shaft (914) is fixed to the surface of the rotating rod (91).

2. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 1, characterized in that: The self-locking sealing unit (5) comprises two abutment boxes (51) fixed on the storage shell (2) and the sealing shell (3); a folding strip (52) is provided on one side of the two abutment boxes (51) that are in contact with each other; a semicircular strip (53) is provided at the end of each of the two folding strips (52); a semicircular block (54) is rotatably mounted on the inner wall of each of the two semicircular blocks (53); the two semicircular blocks (54) are spliced ​​with each other; and a push rod (55) is fixed on the outer periphery of each of the two semicircular blocks (54). A tension spring (56) is fixed between the adjacent push rods (55) and the abutment boxes (51); an arc groove (57) matching the push rods (55) is formed on the surface of the semicircular strip (53); a strip groove (58) matching the push rods (55) is formed on the outer side of the abutment box (51); a rear laminating sealing strip (59) is fixed to the outer periphery of the storage shell (2); and a front laminating sealing strip (510) used in conjunction with the rear laminating sealing strip (59) is fixed to the outer periphery of the sealing shell (3).

3. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 1, characterized in that: A ring body (915) is fixed on the surface of the hollow plug (6), a front sealing ring (916) is fixed to the rear of the ring body (915), a rear sealing ring (917) used in conjunction with the front sealing ring (916) is fixed to the front of the inspection housing (1), an annular fitting groove (918) is provided at the rear of the front sealing ring (916), and an embedded ring (919) used in conjunction with the annular fitting groove (918) is provided in front of the rear sealing ring (917), the front sealing ring (916) is of hollow design, and an air blowing unit (10) is provided between the driving bend shaft (914) and the hollow plug (6), and the air blowing unit (10) is used to automatically input air into the front sealing ring (916) to cause it to deform when the driving bend shaft (914) is pressed down and fixed.

4. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 3, characterized in that: The inflation unit (10) comprises an inflation cylinder (101) fixed on the surface of a hollow plug (6), an inflation piston (102) being movably mounted on the inner wall of the inflation cylinder (101), a spring block (103) being fixed inside the inflation cylinder (101), a return spring (104) being fixed between the spring block (103) and the inflation piston (102), an extrusion rod (105) being fixed behind the inflation piston (102), the inflation cylinder (101) being connected to a front sealing ring (916) via a conduit (106), a curved block (107) for use with the extrusion rod (105) being slidably mounted on the surface of the hollow plug (6), an arcuate slide groove (108) for use with the curved block (107) being provided on the surface of the hollow plug (6), and the curved block (107) being fixed to the driving bending shaft (914) via a connecting rod (109).

5. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 1, characterized in that: The surface of the hollow plug post (6) is provided with an inner opening groove (11) for use in conjunction with the drive bend shaft (914), and the surface of the protective sleeve (8) is provided with an outer opening groove (12) for use in conjunction with the drive bend shaft (914).

6. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 1, characterized in that: The end of the locking tooth (910) that contacts the locking ratchet (99) is designed to be in an inclined shape, and is used to limit the locking ratchet (99) to rotate in only one direction.

7. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 3, characterized in that: The annular fitting groove (918) is designed to be narrow inside and wide outside. The embedded ring (919) and the rear sealing ring (917) are integrally formed. The outer contour of the embedded ring (919) is a truncated cone shape and fits in the annular fitting groove (918) for use.

Images