Protection device for thermodynamic system of power plant

Abstract

The invention discloses a protection device for a thermal system of a power plant, and relates to the technical field of protection devices. The number of the arc-shaped protective shells is two, four corresponding connecting columns are fixed to the front side of the arc-shaped protective shell on the rear side, four corresponding connecting holes are formed in the left edge and the right edge of the arc-shaped protective shell on the front side, and the connecting columns are clamped into the corresponding connecting holes. The device comprises two arc-shaped protective shells, wrapping assemblies and uniformly distributed fastening assemblies are installed in the two arc-shaped protective shells, the fastening assemblies are matched with the wrapping assemblies, moving assemblies and extrusion assemblies are installed on the surfaces of the arc-shaped protective shells, the moving assemblies are connected with the extrusion assemblies, and the two extrusion assemblies are connected with all the fastening assemblies correspondingly. And the fixing assembly comprises a fixing strip, a sliding block, a clamping column and a first spring, the replacement frequency can be reduced, and meanwhile rapid disassembly can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of protection devices, in particular to a protection device for a thermal system of a power plant. Background Art

[0002] A thermal power plant, also known as a thermal power plant, is a plant that uses combustible materials such as coal as fuel to produce electricity. The basic production process is as follows: When the fuel burns, it heats water to generate steam, converting the fuel's chemical energy into thermal energy. The steam pressure drives the steam turbine, converting the thermal energy into mechanical energy. The steam turbine then drives the generator, converting the mechanical energy into electrical energy. The prime mover is usually a steam engine or gas turbine. In some smaller power plants, internal combustion engines may also be used. All of these plants generate electricity by exploiting the pressure drop as high-temperature, high-pressure steam or gas passes through a turbine and becomes low-pressure air or condensate.

[0003] To prevent rust and corrosion in thermal pipes, thermal power plants often wrap them in a layer of sponge to insulate them from air. However, when inspecting the pipes, workers must tear off the sponge at the site to be inspected, resulting in wasted sponge and increased inspection costs. Furthermore, the sponge needs to be replaced after a period of use, further increasing the power plant's financial costs. To address this issue, we propose a protective device for power plant thermal systems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a protection device for the thermal system of a power plant, which can reduce the replacement frequency and can be quickly disassembled, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a protection device for a thermal system of a power plant, comprising an arc-shaped protective shell and a fixing assembly;

[0006] Arc-shaped protective shells: There are two of them. Four corresponding connecting posts are fixed to the front side of the rear arc-shaped protective shell. Four corresponding connecting holes are opened on the left and right sides of the front arc-shaped protective shell. The connecting posts are snapped into the corresponding connecting holes. Wrapping components and evenly distributed fastening components are installed inside the two arc-shaped protective shells. The fastening components and wrapping components cooperate with each other. A moving component and an extrusion component are installed on the surface of the arc-shaped protective shell. The moving component and the extrusion component are connected. The two extrusion components are respectively connected to all the fastening components.

[0007] The fixing assembly comprises a fixing strip, a slider, a clamping column and a first spring. Two corresponding fixing strips are fixed to the left and right edges of the surface of the arc-shaped protective shell on the front side. A sliding hole is provided inside the fixing strip. Two corresponding clamping columns are slidably connected at the upper and lower ends of the sliding hole. A clamping hole is provided on the circumferential surface of the connecting column. The clamping column is clamped in the corresponding clamping hole. A strip opening is provided on the front side of the fixing strip. Two corresponding sliders are slidably connected inside the strip opening. The two sliders are respectively fixed on the end faces of the two clamping columns. A first spring is fixed between the two sliders. The two arc-shaped protective shells are fixed together by setting a fixing assembly.

[0008] Furthermore, the fastening assembly includes a fastening rod, a fastening disk and a second spring. Six corresponding mounting holes are opened on the upper and lower edges of the surface of the arc-shaped protective shell. The fastening rod is slidably connected to the inside of the mounting hole. The fastening rod is fixed with a fastening disk on the end face inside the arc-shaped protective shell. The second spring is sleeved on the circumferential surface of the fastening rod. One end of the second spring is fixed on the end face of the fastening disk, and the other end of the second spring is fixed on the inner wall of the arc-shaped protective shell. By setting the fastening assembly, the arc-shaped high-temperature resistant silicone sheet is squeezed so that it can fit firmly on the surface of the thermal pipe.

[0009] Furthermore, the wrapping assembly includes an arc-shaped high-temperature resistant silicone sheet, a high-temperature resistant silicone strip and a third spring. The interior of the arc-shaped protective shell is provided with an arc-shaped high-temperature resistant silicone sheet. The surface of the arc-shaped high-temperature resistant silicone sheet is fixed with evenly distributed high-temperature resistant silicone strips and a third spring. All high-temperature resistant silicone strips and the third spring are fixed inside the arc-shaped protective shell. All fastening plates are respectively fitted with the surfaces of the two arc-shaped high-temperature resistant silicone sheets. The thermal pipeline is protected by setting the wrapping assembly.

[0010] Furthermore, the extrusion assembly includes an arc-shaped plate and an oblique extrusion block. Two corresponding arc-shaped plates are provided on the surface of the arc-shaped protective shell. Three corresponding oblique extrusion blocks are provided on the side of the arc-shaped plate. The left and right oblique extrusion blocks are fixed on the left and right sides of the arc-shaped plate. An opening is provided in the middle of the arc-shaped plate. The oblique extrusion block in the middle is fixed inside the opening. The six oblique extrusion blocks are respectively fitted with six fastening rods provided on the surface of the arc-shaped protective shell. All the fastening rods are extruded by setting an extrusion assembly.

[0011] Furthermore, the moving assembly includes an arc-shaped piece, a bidirectional screw and a limit rod. Two corresponding arc-shaped pieces are fixed on the surface of the arc-shaped protective shell. The two arc-shaped plates arranged on the surface of the arc-shaped protective shell are located between the two arc-shaped pieces. The right sides of the two arc-shaped plates are provided with threaded holes. The two threaded holes have opposite threads. The internal threads of the two threaded holes are connected with a bidirectional screw. The bidirectional screw is welded by two threaded rods with opposite threads. The right sides of the two arc-shaped pieces are provided with rotating holes. The upper and lower ends of the bidirectional screw are respectively rotatably connected to the inside of the two rotating holes. Two corresponding limit holes are provided on the left sides of the two arc-shaped plates. The internal sliding connection of the two limit holes is connected with a limit rod. The limit rod is fixed between the two arc-shaped pieces. By setting the moving assembly, all the upper and lower oblique extrusion blocks are driven to move.

[0012] Furthermore, an anti-slip ring is fixed to the upper end of the bidirectional screw surface, and evenly distributed anti-slip grooves are opened on the circumferential surface of the anti-slip ring. The anti-slip ring is provided to facilitate the user to rotate the bidirectional screw.

[0013] Furthermore, two corresponding arc-shaped pull rods are provided on the front side of the front arc-shaped protective shell, and the two ends of the two arc-shaped pull rods are respectively connected to the front sides of the four sliders. A rubber sleeve is fixed on the surface of the arc-shaped pull rod. By providing two arc-shaped pull rods, it is convenient for users to pull the upper and lower four sliders closer.

[0014] Furthermore, a card slot is provided on the upper side of the arc-shaped protective shell, and a card block is fixed on the lower side of the arc-shaped protective shell. The card slot and the card block cooperate with each other, and the card block is connected to the card slot by setting the card block.

[0015] Furthermore, two corresponding guide rods are fixed on the end surface of the fastening disk, and the surface of the arc-shaped protective shell is provided with evenly distributed guide holes. The guide rods are slidably connected to the inside of the corresponding guide holes, and the moving direction of the fastening disk is guided by setting the guide rods.

[0016] Furthermore, two corresponding limit blocks are fixed on the rear side of the front arc-shaped protective shell, and two corresponding limit grooves are opened on the front side of the rear arc-shaped protective shell. The limit blocks are clamped inside the limit grooves, and the stability of the two arc-shaped protective shells after connection is improved by setting the limit blocks.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the protection device for the thermal system of the power plant has the following advantages:

[0018] 1. Through the linkage design of the fixed assembly's clamping column, slider, and first spring, the operator only needs to pinch the curved pull rod to simultaneously release the lock of all clamping columns on the connecting column, realizing the rapid separation of the two curved protective shells. When installing in reverse, the connecting column automatically locks when inserted, significantly simplifying the disassembly and assembly process, facilitating pipeline maintenance or component replacement, and reducing maintenance time and costs.

[0019] 2. Utilizing the synergistic effect of a resettable wrapping assembly (arc-shaped high-temperature resistant silicone sheet + third spring) and an adjustable fastening assembly, the bidirectional screw is rotated during testing to release the pressure of the fastening disc on the silicone sheet, creating a temporary gap between the protective layer and the pipe. Testing can be completed without damaging the material, avoiding the waste caused by tearing the traditional sponge layer and significantly reducing long-term testing costs.

[0020] 3. A bidirectional screw-driven extrusion assembly pushes the oblique extrusion block, causing the fastening disc to evenly compress the curved, high-temperature-resistant silicone sheet. Combined with the preload of the third spring, this ensures the silicone sheet adheres tightly to the curved surface of pipes of varying diameters. The high-temperature-resistant silicone material, combined with the silicone strip buffer layer, effectively isolates the air and protects against the high-temperature environment of the power plant, reducing the risk of pipeline corrosion and extending the service life of the protective device.

[0021] 4. The interlocking design of the top slots and bottom blocks of the curved protective shell allows for seamless longitudinal splicing of multiple devices along the pipeline. This modular structure flexibly adapts to the needs of pipe sections of varying lengths, eliminating customization costs. The interlocking stoppers and slots further enhance the overall stability of the combined module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the fixing assembly of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the wrapping assembly of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 It is a front sectional view of the present invention.

[0027] In the figure: 1 arc-shaped protective shell, 2 fixing component, 21 fixing bar, 22 slider, 23 clamping column, 24 first spring, 3 fastening component, 31 fastening rod, 32 fastening disk, 33 second spring, 4 wrapping component, 41 arc-shaped high-temperature resistant silicone sheet, 42 high-temperature resistant silicone strip, 43 third spring, 5 extrusion component, 51 arc-shaped plate, 52 oblique extrusion block, 6 moving component, 61 arc-shaped sheet, 62 bidirectional screw, 63 limit rod, 7 anti-slip ring, 8 arc-shaped pull rod, 9 rubber sleeve, 10 slot, 11 clamping block, 12 guide rod, 13 connecting column, 14 limit block. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-5 ,This embodiment provides a technical solution: a protection device for a thermal system of a power plant, comprising an arc-shaped protective shell 1 and a fixing assembly 2;

[0030] Arc-shaped protective shell 1: There are two, the front side of the rear arc-shaped protective shell 1 is fixed with four corresponding connecting columns 13, the left and right sides of the front arc-shaped protective shell 1 are provided with four corresponding connecting holes, the connecting columns 13 are snapped into the corresponding connecting holes, the interior of the two arc-shaped protective shells 1 is installed with a wrapping component 4 and a uniformly distributed fastening component 3, the fastening component 3 and the wrapping component 4 cooperate, the surface of the arc-shaped protective shell 1 is installed with a moving component 6 and an extrusion component 5, the moving component 6 and the extrusion component 5 are connected, the two extrusion components 5 are respectively connected to all the fastening components 3, the fastening component 3 includes a fastening rod 31, a fastening disk 32 and a second spring 33, the upper and lower edges of the surface of the arc-shaped protective shell 1 are provided with six corresponding mounting holes, the inner sliding of the mounting hole A fastening rod 31 is connected, and a fastening disk 32 is fixed on the end face of the fastening rod 31 located inside the arc-shaped protective shell 1. A second spring 33 is sleeved on the circumferential surface of the fastening rod 31, and one end of the second spring 33 is fixed on the end face of the fastening disk 32, and the other end of the second spring 33 is fixed on the inner wall of the arc-shaped protective shell 1. The wrapping component 4 includes an arc-shaped high-temperature resistant silicone sheet 41, a high-temperature resistant silicone strip 42 and a third spring 43. The interior of the arc-shaped protective shell 1 is provided with an arc-shaped high-temperature resistant silicone sheet 41, and the surface of the arc-shaped high-temperature resistant silicone sheet 41 is fixed with evenly distributed high-temperature resistant silicone strips 42 and the third spring 43. All high-temperature resistant silicone strips 42 and the third spring 43 are fixed to the interior of the arc-shaped protective shell 1, and all fastening disks 32 are respectively connected to the two arc-shaped high-temperature resistant silicone sheets. 41 is fitted with the surface, the extrusion assembly 5 includes an arc plate 51 and an oblique extrusion block 52, the surface of the arc protective shell 1 is provided with two corresponding arc plates 51, and the side of the arc plate 51 is provided with three corresponding oblique extrusion blocks 52, the left and right oblique extrusion blocks 52 are fixed on the left and right sides of the arc plate 51, and an opening is opened in the middle of the arc plate 51. The oblique extrusion block 52 in the middle is fixed inside the opening. The six oblique extrusion blocks 52 are respectively fitted with the six fastening rods 31 provided on the surface of the arc protective shell 1. The moving assembly 6 includes an arc piece 61, a bidirectional screw 62 and a limit rod 63. Two corresponding arc pieces 61 are fixed on the surface of the arc protective shell 1, and the two arc plates 51 provided on the surface of the arc protective shell 1 are located between the two arc pieces 61 , the right sides of the two arc-shaped plates 51 are provided with threaded holes, the threads of the two threaded holes are opposite, and the internal threads of the two threaded holes are connected with a bidirectional screw 62, which is welded by two threaded rods with opposite threads. The right sides of the two arc-shaped pieces 61 are provided with rotating holes, and the upper and lower ends of the bidirectional screw 62 are respectively rotatably connected to the inside of the two rotating holes. The left sides of the two arc-shaped plates 51 are provided with two corresponding limiting holes, and the internal sliding connection of the two limiting holes is connected to the limiting rod 63. The limiting rod 63 is fixed between the two arc-shaped pieces 61. By setting the moving component 6, all the upper and lower oblique extrusion blocks 52 are driven to move, and by setting the extrusion component 5, all the fastening rods 31 are extruded. By setting the wrapping component 4, the thermal pipe is protected.By setting the fastening component 3, the arc-shaped high-temperature resistant silicone sheet 41 is squeezed so that it can be firmly attached to the surface of the thermal pipe;

[0031] The fixing assembly 2 includes a fixing bar 21, a slider 22, a clamping column 23 and a first spring 24. Two corresponding fixing bars 21 are fixed to the left and right edges of the surface of the front arc-shaped protective shell 1. A sliding hole is provided inside the fixing bar 21. Two corresponding clamping columns 23 are slidably connected at the upper and lower ends of the sliding hole. A clamping hole is provided on the circumferential surface of the connecting column 13. The clamping column 23 is clamped in the corresponding clamping hole. A strip opening is provided on the front side of the fixing bar 21. Two corresponding sliders 22 are slidably connected inside the strip opening. The two sliders 22 are respectively fixed on the end faces of the two clamping columns 23. A first spring 24 is fixed between the two sliders 22. The two arc-shaped protective shells 1 are fixed together by setting the fixing assembly 2.

[0032] Among them, an anti-slip ring 7 is fixed to the upper end of the surface of the bidirectional screw 62, and evenly distributed anti-slip grooves are opened on the circumferential surface of the anti-slip ring 7. The anti-slip ring 7 is provided to facilitate the user to rotate the bidirectional screw 62.

[0033] Among them: two corresponding arc-shaped pull rods 8 are set on the front side of the front arc-shaped protective shell 1, and the two ends of the two arc-shaped pull rods 8 are respectively connected to the front sides of the four sliders 22. A rubber sleeve 9 is fixed on the surface of the arc-shaped pull rod 8. By setting two arc-shaped pull rods 8, it is convenient for the user to pull the upper and lower four sliders 22 closer.

[0034] Wherein: a card slot 10 is opened on the upper side of the arc-shaped protective shell 1, and a card block 11 is fixed on the lower side of the arc-shaped protective shell 1. The card slot 10 and the card block 11 cooperate with each other, and the card block 11 is connected to the card slot 10 by setting it.

[0035] Among them: two corresponding guide rods 12 are fixed on the end face of the fastening plate 32, and the surface of the arc-shaped protective shell 1 is provided with evenly distributed guide holes. The guide rods 12 are slidably connected to the inside of the corresponding guide holes, and the moving direction of the fastening plate 32 is guided by setting the guide rods 12.

[0036] Among them: two corresponding limit blocks 14 are fixed on the rear side of the front arc-shaped protective shell 1, and two corresponding limit grooves are opened on the front side of the rear arc-shaped protective shell 1. The limit blocks 14 are clamped inside the limit grooves. By setting the limit blocks 14, the stability of the two arc-shaped protective shells 1 after connection is improved.

[0037] The operating principle of the protective device for a power plant thermal system provided by the present invention is as follows: When an operator wraps two curved protective shells 1 around the outside of a pipe, the connecting column 13 of the rear shell is inserted into the connecting hole of the front shell. Under the elastic force of the first spring 24, the locking column 23 of the fixing assembly 2 automatically snaps into the locking hole of the connecting column 13 to complete the locking. The limit block 14 is embedded in the limit groove to enhance the stability of the connection. In the initial state, the second spring 33 of the fastening assembly 3 uses elastic force to pull the fastening rod 31 and fastening plate 32 toward the inner wall of the curved protective shell 1, keeping the fastening plate 32 separated from the curved high-temperature-resistant silicone sheet 41 of the wrapping assembly 4. At this time, the silicone sheet is maintained in its basic position only by the preload force of the third spring 43. When a seal is required, rotating the anti-slip ring 7 drives the bidirectional screw 62. The opposing threads of the bidirectional screw 62 drive the two curved plates 51 toward each other along the stop rod 63. The oblique extrusion block 52 on the curved plate 51 shifts accordingly, and its wedge-shaped slope pushes the clamping rod 31 against the tension of the second spring 33 to slide toward the pipe, causing the clamping plate 32 to press against the curved, high-temperature-resistant silicone sheet 41. The preload of the third spring 43 then acts in concert to force the silicone sheet to conform to the pipe contour. Simultaneously, the high-temperature-resistant silicone strip 42 forms a buffer layer, achieving a corrosion-resistant and high-temperature seal. When testing is required, the anti-slip ring 7 is rotated in the opposite direction. Once the oblique extrusion block 52 releases its thrust, the second spring 33 immediately pulls the clamping rod 31 and clamping plate 32 back into place. Once the compression is released, the third spring 43 maintains the silicone sheet's base position, creating a test gap. For complete disassembly, the housing can be separated by pinching the curved pull rod 8 to disengage the latching post 23 from the latching hole. Multiple devices are connected longitudinally by interlocking the upper latching block 11 with the lower latching slot 10.

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protection device for a thermal system of a power plant, characterized by: It comprises an arc-shaped protective shell (1) and a fixing component (2); Arc-shaped protective shells (1): There are two arc-shaped protective shells (1), four corresponding connecting columns (13) are fixed on the front side of the rear arc-shaped protective shell (1), and four corresponding connecting holes are opened on the left and right sides of the front arc-shaped protective shell (1). The connecting columns (13) are clamped in the corresponding connecting holes. The interiors of the two arc-shaped protective shells (1) are installed with wrapping components (4) and evenly distributed fastening components (3). The fastening components (3) and the wrapping components (4) cooperate with each other. The surface of the arc-shaped protective shell (1) is installed with a moving component (6) and an extrusion component (5). The moving component (6) and the extrusion component (5) are connected. The two extrusion components (5) are respectively connected to all the fastening components (3). The fixing assembly (2) comprises a fixing strip (21), a slider (22), a clamping column (23) and a first spring (24). Two corresponding fixing strips (21) are fixed to the left and right edges of the surface of the front arc-shaped protective shell (1). A sliding hole is provided inside the fixing strip (21). Two corresponding clamping columns (23) are slidably connected at the upper and lower ends of the sliding hole. A clamping hole is provided on the circumferential surface of the connecting column (13). The clamping column (23) is clamped in the corresponding clamping hole. A strip opening is provided on the front side of the fixing strip (21). Two corresponding sliders (22) are slidably connected in the strip opening. The two sliders (22) are respectively fixed on the end faces of the two clamping columns (23). A first spring (24) is fixed between the two sliders (22).

2. A protection device for a thermal system of a power plant according to claim 1, characterized in that: The fastening assembly (3) includes a fastening rod (31), a fastening disk (32) and a second spring (33). Six corresponding mounting holes are provided on the upper and lower edges of the surface of the arc-shaped protective shell (1). The interior of the mounting hole is slidably connected with the fastening rod (31). The fastening disk (32) is fixed on the end surface of the fastening rod (31) located inside the arc-shaped protective shell (1). The second spring (33) is sleeved on the circumferential surface of the fastening rod (31). One end of the second spring (33) is fixed on the end surface of the fastening disk (32), and the other end of the second spring (33) is fixed on the inner wall of the arc-shaped protective shell (1).

3. A protection device for a thermal system of a power plant according to claim 2, characterized in that: The wrapping assembly (4) comprises an arc-shaped high-temperature resistant silicone sheet (41), a high-temperature resistant silicone strip (42) and a third spring (43); the arc-shaped high-temperature resistant silicone sheet (41) is provided inside the arc-shaped protective shell (1); the surface of the arc-shaped high-temperature resistant silicone sheet (41) is fixed with uniformly distributed high-temperature resistant silicone strips (42) and the third spring (43); all the high-temperature resistant silicone strips (42) and the third spring (43) are fixed inside the arc-shaped protective shell (1); and all the fastening plates (32) are respectively fitted with the surfaces of the two arc-shaped high-temperature resistant silicone sheets (41).

4. A protection device for a thermal system of a power plant according to claim 2, characterized in that: The extrusion assembly (5) comprises an arc-shaped plate (51) and an oblique extrusion block (52); two corresponding arc-shaped plates (51) are provided on the surface of the arc-shaped protective shell (1); three corresponding oblique extrusion blocks (52) are provided on the side of the arc-shaped plate (51); the left and right oblique extrusion blocks (52) are fixed on the left and right sides of the arc-shaped plate (51); an opening is provided in the middle of the arc-shaped plate (51); the oblique extrusion block (52) in the middle is fixed inside the opening; the six oblique extrusion blocks (52) are respectively fitted with six fastening rods (31) provided on the surface of the arc-shaped protective shell (1).

5. A protection device for a thermal system of a power plant according to claim 4, characterized in that: The moving assembly (6) comprises an arc-shaped piece (61), a bidirectional screw (62) and a limiting rod (63). Two corresponding arc-shaped pieces (61) are fixed on the surface of the arc-shaped protective shell (1). Two arc-shaped plates (51) arranged on the surface of the arc-shaped protective shell (1) are located between the two arc-shaped pieces (61). The right sides of the two arc-shaped plates (51) are provided with threaded holes. The threads of the two threaded holes are opposite. The internal threads of the two threaded holes are connected with bidirectional screws (62). The bidirectional screws (62) are welded by two threaded rods with opposite threads. The right sides of the two arc-shaped pieces (61) are provided with rotating holes. The upper and lower ends of the bidirectional screws (62) are respectively rotatably connected to the inside of the two rotating holes. The left sides of the two arc-shaped plates (51) are provided with two corresponding limiting holes. The inside of the two limiting holes is slidably connected to the limiting rod (63). The limiting rod (63) is fixed between the two arc-shaped pieces (61).

6. A protection device for a thermal system of a power plant according to claim 5, characterized in that: An anti-slip ring (7) is fixed to the upper end of the surface of the bidirectional screw (62), and evenly distributed anti-slip grooves are provided on the circumferential surface of the anti-slip ring (7).

7. The protection device for a thermal system of a power plant according to claim 1, characterized in that: Two corresponding arc-shaped pull rods (8) are provided on the front side of the front arc-shaped protective shell (1), and the two ends of the two arc-shaped pull rods (8) are respectively connected to the front sides of the four sliders (22), and a rubber sleeve (9) is fixed on the surface of the arc-shaped pull rods (8).

8. The protection device for a thermal system of a power plant according to claim 1, characterized in that: A card slot (10) is provided on the upper side of the arc-shaped protective shell (1), and a card block (11) is fixed on the lower side of the arc-shaped protective shell (1), wherein the card slot (10) and the card block (11) cooperate with each other.

9. The protection device for a thermal system of a power plant according to claim 2, characterized in that: Two corresponding guide rods (12) are fixed on the end surface of the fastening plate (32), and the surface of the arc-shaped protective shell (1) is provided with evenly distributed guide holes, and the guide rods (12) are slidably connected to the inside of the corresponding guide holes.

10. The protection device for a thermal system of a power plant according to claim 1, characterized in that: Two corresponding limiting blocks (14) are fixed to the rear side of the front arc-shaped protective shell (1), and two corresponding limiting grooves are provided on the front side of the rear arc-shaped protective shell (1), wherein the limiting blocks (14) are clamped inside the limiting grooves.

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