Anchor cover protection component

Abstract

The utility model discloses an anchor cover protection component, and relates to nuclear power engineering and bridge engineering maintenance technical field, the anchor cover protection component comprises a base, a cover cap and a protection main body, the base comprises a base plate and a pipe sleeve, one end of the pipe sleeve is connected with the base plate, the base plate is used for being connected with a protected structure, the pipe sleeve and the cover cap are both located in the protection main body, the protection body is used for heat insulation. The preparation process comprises the steps of mounting a sheath mold, wrapping the protection main body and demolding. According to the utility model, the heat-insulating and fire-resistant performance and the sealing performance are improved, and the stability and the safety of the protective component are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power engineering and bridge engineering maintenance, in particular to an anchor cover protection component. Background Art

[0002] my country's nuclear power industry has developed through generations of arduous efforts. Today, nuclear power plant construction and operation technology has reached a mature stage. China is not only able to independently design and construct nuclear power plants, but can also undertake international construction projects. Leveraging independent innovation and comprehensive industry chain development, China's nuclear power technology has become a global leader. However, the development of nuclear power also carries risks. Nuclear contamination incidents can lead to catastrophic accidents. Therefore, maintaining the structural safety of reactor buildings is paramount. Prestressed steel strands, with their high bearing capacity, low relaxation, flexibility, and ease of stranding, are ideal materials for the construction of nuclear containment reinforcement. Strand anchors are a crucial component and must be highly reliable, fulfilling a crucial role in structural safety. Therefore, their fire and corrosion resistance are crucial to structural safety. Existing traditional structural protection measures primarily rely on fireproof and anti-corrosion coatings. These protection measures not only have limited fire resistance in the event of a high-temperature fire, failing to withstand the heat and flames for long periods of time, but also suffer from insufficient sealing. Furthermore, their resistance to earthquakes and other external forces is poor, making them susceptible to dislodging and failure. Utility Model Content

[0003] The purpose of the utility model is to provide an anchor cover protective component, which improves the heat insulation and fire resistance and sealing performance, and improves the stability and safety of the protective component.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides an anchor cover protective component, comprising a base, a cap and a protective body, the base comprising a bottom plate and a pipe sleeve, one end of the pipe sleeve being connected to the bottom plate, the bottom plate being used to be connected to the protected structure, the pipe sleeve and the cap being located in the protective body, and the protective body being used for heat insulation.

[0006] Preferably, one end of the protective body is an open end, and the other end of the protective body is a closed end, the open end corresponds to the opening on the base, the cap is located at the closed end of the protective body, and the protective body includes a first protective layer, a second protective layer, a third protective layer and a fourth protective layer arranged from the inside to the outside.

[0007] Preferably, the sleeve is located between the second protective layer and the third protective layer, and the cap is located between the second protective layer and the third protective layer.

[0008] Preferably, the first protective layer is formed by winding pre-oxidized silk fiber aerogel tape; the second protective layer is formed by winding glass fiber aerogel tape; the third protective layer is formed by winding basalt fiber fire-resistant insulation tape; the fourth protective layer is formed by winding ceramic fiber wrapping tape;

[0009] The thickness of the first protective layer is 3 mm, the thickness of the second protective layer is 6 mm, the thickness of the third protective layer is 3 mm, and the thickness of the fourth protective layer is 1 mm.

[0010] Preferably, a sealant connecting layer is provided between the first protective layer and the second protective layer, between the second protective layer and the third protective layer, and between the third protective layer and the fourth protective layer, and basalt fiber cloth is provided on the outer side of the sealant connecting layer.

[0011] Preferably, the base and the cover are both made of stainless steel.

[0012] Preferably, the cap is in a U-shape, and the opening of the cap faces the opening of the base.

[0013] Preferably, the thickness of the bottom plate is 3 mm, the thickness of the cap and the tube sleeve are both 1 mm, and the height of the cap and the tube sleeve are both 1 / 10 of the length of the protective body.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The protective body of this utility model is sealed, heat-insulated, and fire-resistant, enhancing both thermal insulation and fire resistance, as well as sealing performance, and improving the stability and safety of the protected anchor in a building component. The anchor cover protective component can be customized to meet specific requirements. The anchor cover protective component of this utility model can replace fire-retardant and anti-corrosion coatings and other protective solutions originally designed or used during maintenance. This not only improves the long-term performance of the anchor head or anchor area, such as sealing, corrosion resistance, and fire insulation, but also further enhances the durability and safety of the prestressed steel strand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the anchor cover protection component of the present utility model;

[0018] Figure 2Schematic diagram of the base provided by the present utility model;

[0019] Figure 3 Schematic diagram of preparing an anchor cover protection component using a sheath mold according to the present utility model;

[0020] Figure 4 Schematic diagram of demolding the anchor cover protection component of the present utility model;

[0021] Where: 100, anchor cover protection component; 1, sheath mold; 2, first protection layer; 3, second protection layer; 4, base; 41, bottom plate; 42, pipe sleeve; 5, cap; 6, third protection layer; 7, fourth protection layer; 8, intake pipe. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The purpose of the present utility model is to provide an anchor cover protection component, which improves the heat insulation and fire resistance performance and the sealing performance, and enhances the stability and safety of the protection component.

[0024] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] As Figures 1 to 2 shown: This embodiment provides an anchor cover protection component 100, which can be used for fire protection of steel strand anchor heads in nuclear power projects and can also be used for fire protection of cable anchor heads of bridges. It includes a base 4, a cap 5, and a protection main body. The base 4 includes a bottom plate 41 and a pipe sleeve 42. One end of the pipe sleeve 42 is connected to the bottom plate 41. The bottom plate 41 is used to connect to the protected structure. Both the pipe sleeve 42 and the cap 5 are embedded in the protection main body, so that the pipe sleeve 42, the cap 5, and the protection main body form an integral whole. The protection main body is used for heat insulation.

[0026] Specifically, in this embodiment, one end of the protection main body is an open end, and the other end of the protection main body is a closed end. The open end corresponds to the opening on the base 4. The cap 5 is located at the closed end of the protection main body. The cap 5 is in a U shape, and the opening of the cap 5 faces the opening of the base 4. The protection main body includes a first protection layer 2, a second protection layer 3, a third protection layer | 6, and a fourth protection layer 7 arranged from the inside out; the pipe sleeve 42 is located between the second protection layer 3 and the third protection layer 6, and the cap 5 is located between the second protection layer 3 and the third protection layer 6.

[0027] In this embodiment, the first protective layer 2 is formed by winding a pre-oxidized silk fiber aerogel tape, which is made of a pre-oxidized silk aerogel felt of the prior art, and the width does not exceed 15 cm; the second protective layer 3 is formed by winding a glass fiber aerogel tape, which is made of aerogel felt of the prior art, preferably a glass fiber aerogel felt; the third protective layer 6 is formed by winding a basalt fiber fire-resistant insulation tape, which is made of a basalt fiber felt of the prior art, and the structure of the basalt fiber felt is specifically described in the application No. 202 221348715.2 discloses a basalt fiber felt; the fourth protective layer 7 is wound with a ceramic fiber wrapping tape, and the ceramic fiber wrapping tape is made of a flexible coiled material in the prior art. The structure and materials of the flexible coiled material are specifically disclosed in the Chinese patent application number 202311597680.5, which discloses a flexible coiled material, a preparation method thereof, and an application thereof; the thickness of the first protective layer 2 is 3 mm, the thickness of the second protective layer 3 is 6 mm, the thickness of the third protective layer 6 is 3 mm, and the thickness of the fourth protective layer 7 is 1 mm.

[0028] In this embodiment, the ceramic fiber wrapping tape of the fourth protective layer 7 can be fire-resistant to 1200°C, and the ceramic silicone rubber layer on its surface can be quickly ceramicized at high temperature, blocking the high-temperature flame from eroding into the interior of the structure, forming a first fire-resistant layer; the basalt fiber fire-resistant insulation tape of the third protective layer 6 has high tensile strength and can withstand high temperatures of 800°C, effectively blocking part of the heat, forming a second insulation layer; the glass fiber aerogel tape of the second protective layer 3 can withstand high temperatures of 650°C, effectively blocking part of the heat, forming a third insulation layer; the pre-oxidized silk fiber aerogel tape of the first protective layer 2 can withstand high temperatures of 600°C, and can further resist heat erosion into the interior, forming a fourth insulation layer.

[0029] In this embodiment, the first protective layer 2 and the second protective layer 3, the second protective layer 3 and the third protective layer 6, and the third protective layer 6 and the fourth protective layer 7 are bonded by a sealant connecting layer. The sealant connecting layer is formed by a fire-resistant and flame-retardant sealant. Basalt fiber cloth is provided on the outside of the sealant connecting layer. The surface density of the basalt fiber cloth is 100g / m 2 .

[0030] In this embodiment, both the base 4 and the cap 5 are made of stainless steel. The base 4 is provided with fastening bolt holes for anchoring to the protected structure. The base plate 41 is 3 mm thick, while the cap 5 and the sleeve 42 are both 1 mm thick. The base 41 and sleeve 42 are fully welded. The height of the cap 5 and sleeve 42 is 1 / 10 the length of the protective body, and the inner diameters of the cap 5 and sleeve 42 are the same. The base 4 facilitates installation on the protected anchor head or anchorage, while the cap 5 further protects the end portion.

[0031] The anchor cap protective component 100 of this embodiment can be used for fire protection of stranded anchor heads in nuclear power projects and bridge cable anchor heads. This structure can withstand a 2-hour combustion temperature of 1100°C without exceeding 300°C within the protected structure, significantly enhancing the safety and stability of the engineering structure. The anchor cap protective component 100 is connected to the anchor or anchor head via a base plate 41. External high-temperature environments are separated by different functional protective layers (first protective layer 2, second protective layer 3, third protective layer 6, and fourth protective layer 7). Furthermore, the anchor cap protective component 100 forms a rigid and flexible structure during the molding process. Each protective layer (first protective layer 2, second protective layer 3, third protective layer 6, and fourth protective layer 7) provides a certain degree of flexibility, while the combination of the sealant connecting layer and the basalt fiber cloth provides a certain degree of rigidity and toughness. Therefore, the overall structure is both earthquake-resistant and structurally stable. This embodiment effectively reduces the impact of earthquakes or other external forces on the component, improving the stability and safety of the protective component.

[0032] like Figures 3 and 4 As shown: This embodiment provides a preparation process of an anchor cover protective member 100, comprising the following steps:

[0033] Step 1: Install the sheath mold 1: Connect the motor to the sheath mold 1, and the motor drives the sheath mold 1 to rotate. The sheath mold 1 can rotate to protect the main body wrapping and scraping glue, and the rotation speed is adjusted according to the process requirements;

[0034] Step 2: Wrap the protective body: wind the pre-oxidized silk fiber aerogel tape on the sheath mold 1 to form the first protective layer 2, and then evenly apply a layer of fire-resistant flame-retardant sealant with a thickness of about 1 mm on the surface of the first protective layer 2, and overlap and wrap the basalt fiber cloth with an overlap width of about 2 cm; wind the glass fiber aerogel tape to form the second protective layer 3, set clamps at both ends and the middle position of the second protective layer 3 to tighten and fix it, and evenly apply a layer of fire-resistant flame-retardant sealant with a thickness of about 1 mm on the surface of the second protective layer 3 , and overlap and wrap basalt fiber cloth with an overlap width of about 2 cm; the base 4 and the cap 5 are sleeved on the outside of the second protective layer 3, and a layer of fire-resistant flame-retardant sealant is scraped on the outer surface of the pipe sleeve 42 and the cap 5; the joints are wrapped with basalt fiber fire-resistant insulation tape to form a third protective layer 6, and a layer of fire-resistant flame-retardant sealant with a thickness of about 1 mm is evenly scraped on the surface of the third protective layer 6, and overlap and wrap basalt fiber cloth with an overlap width of about 2 cm; the joints are wrapped with ceramic fiber wrapping tape to form a fourth protective layer 7, and then wait for solidification;

[0035] Step 3: Demolding: After curing is completed, a certain pressure of gas is filled into the sheath mold 1 to slightly expand the anchor cover protective component 100, and the sheath mold 1 is quickly taken out.

[0036] In this embodiment, the sheath mold 1 is a steel tube, one end of which is closed, and the other end of which is provided with an air inlet. A cavity is provided within the sheath mold 1, and air outlets are provided on the sidewalls of the sheath mold 1. During demolding, air is inflated into the sheath anchor mold through the air inlet pipe 8. When a certain pressure is reached, the entire anchor cover protective member 100 expands slightly, allowing for smooth demolding.

[0037] During the production process, the rotation speed of the jacket mold 1 is adjusted to facilitate wrapping of the various protective layers (first protective layer 2, second protective layer 3, third protective layer 6, and fourth protective layer 7) and the application of sealant. The jacket mold 1 is provided with an air outlet on its side wall, and increasing the internal pressure of the jacket mold 1 through the air inlet at the end facilitates demoulding.

[0038] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An anchor cover protective component, characterized in that: It includes a base, a cap and a protection body. The base includes a bottom plate and a sleeve. One end of the sleeve is connected to the bottom plate. The bottom plate is used to be connected to the protected structure. The sleeve and the cap are both located in the protection body, and the protection body is used for heat insulation.

2. The anchor cover protection member according to claim 1, characterized in that: One end of the protection body is an open end, and the other end is a closed end. The open end corresponds to the opening on the base. The cap is located at the closed end of the protection body. The protection body includes a first protection layer, a second protection layer, a third protection layer and a fourth protection layer arranged from the inside outwards.

3. The anchor cover protection member according to claim 2, characterized in that: The sleeve is located between the second protection layer and the third protection layer, and the cap is located between the second protection layer and the third protection layer.

4. The anchor cover protection member according to claim 2, characterized in that: The first protection layer is wound with a pre-oxidized fiber aerogel tape; the second protection layer is wound with a glass fiber aerogel tape; the third protection layer is wound with a basalt fiber fire-resistant heat insulation tape; the fourth protection layer is wound with a ceramized fiber wrapping tape; The thickness of the first protection layer is 3mm, the thickness of the second protection layer is 6mm, the thickness of the third protection layer is 3mm, and the thickness of the fourth protection layer is 1mm.

5. The anchor cover protection member according to claim 2, characterized in that: Sealant connection layers are provided between the first protection layer and the second protection layer, between the second protection layer and the third protection layer, and between the third protection layer and the fourth protection layer. A basalt fiber cloth is provided on the outside of the sealant connection layers.

6. The anchor cover protection member according to claim 1, characterized in that: Both the base and the cap are made of stainless steel.

7. The anchor cover protection member according to claim 1, characterized in that: The cap is in a U-shape, and the opening of the cap faces the opening of the base.

8. The anchor cover protection member according to claim 1, characterized in that: The thickness of the bottom plate is 3mm, the thicknesses of both the cap and the sleeve are 1mm, and the heights of both the cap and the sleeve are 1 / 10 of the length of the protection body.

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