Civil air defense closed sleeve with protective shell

Abstract

The utility model relates to the field of civil air defense closed casing pipes, and discloses a civil air defense closed casing pipe with a protective shell, which comprises a closed casing pipe main body and a base layer, protective mechanisms are fixedly arranged at the upper end and the lower end of the closed casing pipe main body, an inner protective layer is fixedly arranged on the inner surface of the base layer, and an outer protective layer is fixedly arranged on the outer surface of the base layer. According to the utility model, the outer pipe of the closed sleeve main body is tightly matched with the sleeve body, the supporting block and the filling material ensure the stability and the sealing performance of the structure, the supporting block enables the sleeve body to be fixed in the outer pipe, the coaxiality is ensured, a protective shell is formed outside the sleeve body, and the overall stability is improved; the filling material is used for further damping and sealing, external substances are prevented from invading, and the protection mechanism can effectively buffer and weaken impact force and protect the sleeve body from being damaged through a buffer spring and a spring damper when the protection mechanism is subjected to mechanical impact such as earthquakes and construction vibration.

Description

Technical Field

[0001] This utility model relates to the field of airtight sleeves for civil defense, and in particular to an airtight sleeve for civil defense with a protective outer shell. Background Technology

[0002] Airtight sleeves for civil defense are indispensable protective pipe fittings in civil defense projects. They are mainly used in scenarios where various pipelines pass through civil defense maintenance structures. When pipelines pass through protective walls, the installation of airtight sleeves for civil defense can play a crucial protective role. They can not only effectively resist the impact of shock waves, but also prevent toxic agents, bacteria and other harmful substances from entering the protected area through pipeline gaps, thereby ensuring the safety of personnel and the normal operation of equipment in the protected area.

[0003] Existing airtight sleeves for civil defense lack effective buffering and protection measures when facing complex external environments, such as the mechanical impact of earthquakes and construction vibrations, which can easily lead to damage to the sleeve body and thus affect the normal operation of civil defense pipeline systems. Therefore, those skilled in the art have provided an airtight sleeve for civil defense with a protective shell to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a civil defense airtight sleeve with a protective shell, which enhances the adaptability and reliability of civil defense airtight sleeves in complex environments and provides strong protection for the safety of civil defense projects.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A type of airtight sleeve with a protective outer shell includes an airtight sleeve body and a base layer. Protective mechanisms are fixedly installed at both the upper and lower ends of the airtight sleeve body. An inner protective layer is fixedly installed on the inner surface of the base layer, and an outer protective layer is fixedly installed on the outer surface of the base layer.

[0007] The sealed sleeve body includes an outer tube and a sleeve body. Support blocks are fixedly installed at the center of the outer surface of the sleeve body. First fillers are fixedly installed around the outer surface of the sleeve body. Second fillers are fixedly installed on the inner surface of the sleeve body. Both protection mechanisms include a fixing block and a support plate. Multiple buffer springs are fixedly installed inside the two fixing blocks. Spring dampers are fixedly installed at the upper ends of the multiple buffer springs.

[0008] Furthermore, both outer tubes are fixedly provided with connecting flanges, and all four support blocks are fixedly connected to the inner wall of the outer tube.

[0009] Furthermore, a pipe body is fixedly disposed on the second inner surface of the filling.

[0010] Furthermore, multiple connecting blocks are fixedly installed at the lower ends of both support plates, and the lower ends of the multiple connecting blocks are fixedly connected to the spring damper.

[0011] Furthermore, the inner protective layer is made of epoxy resin anti-corrosion coating.

[0012] Furthermore, the base layer is made of carbon steel.

[0013] Furthermore, the outer protective layer is made of intumescent acrylic fire-retardant coating.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model proposes a civil defense airtight sleeve with a protective outer shell. The outer tube of the airtight sleeve body fits tightly with the sleeve body. The support block and filling material ensure the stability and sealing of the structure. The support block fixes the position of the sleeve body inside the outer tube, ensuring coaxiality and forming a protective outer shell on the outside of the sleeve body, thus improving overall stability. The filling material further dampens shock and seals, preventing the intrusion of external substances. The protection mechanism, through buffer springs and spring dampers, can effectively buffer and weaken the impact force when subjected to mechanical impacts such as earthquakes and construction vibrations, protecting the sleeve body from damage. This enhances the adaptability and reliability of the civil defense airtight sleeve in complex environments and provides strong protection for the safety of civil defense projects.

[0016] 2. The present invention proposes a civil defense airtight sleeve with a protective outer shell. Its outer protective layer is made of intumescent acrylic fire-retardant coating. When a fire occurs, it expands rapidly upon exposure to high temperatures to form a heat insulation layer, which can effectively prevent the spread of flames and heat, protect the internal pipes and related structures from fire damage, and ensure the safety of civil defense projects in fire scenarios. At the same time, the inner protective layer is made of epoxy resin anti-corrosion coating, which can resist the chemical corrosion of the fluid inside the pipe, avoid damage or leakage of the pipe due to corrosion, extend the service life of the sleeve and pipes, reduce maintenance costs and safety hazards, and ensure the long-term stable operation of the pipeline system of civil defense projects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of the sealed sleeve of this utility model;

[0018] Figure 2 This is a schematic diagram of the protection mechanism of this utility model;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a schematic diagram of the main structure of the sealed sleeve of this utility model.

[0021] Legend:

[0022] 1. Sealed sleeve body; 2. Protective mechanism; 3. Inner protective layer; 4. Base layer; 5. Outer protective layer; 101. Connecting flange; 102. Outer pipe; 103. Support block; 104. Sleeve body; 105. First filler; 106. Pipe body; 107. Second filler; 201. Fixing block; 202. Buffer spring; 203. Spring damper; 204. Connecting block; 205. Support plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1-4 An embodiment of this utility model is provided: a civil defense airtight sleeve with a protective shell, including an airtight sleeve body 1 and a base layer 4. The upper and lower ends of the airtight sleeve body 1 are fixedly provided with protective mechanisms 2. The inner protective layer 3 is fixedly provided on the inner surface of the base layer 4, and the outer protective layer 5 is fixedly provided on the outer surface of the base layer 4. The inner protective layer 3 is made of epoxy resin anti-corrosion coating, the base layer 4 is made of carbon steel, and the outer protective layer 5 is made of intumescent acrylic fireproof coating.

[0025] Specifically, the sealed sleeve body 1 can support and connect the pipeline. The internal filling and support structure ensures stability and sealing. The protection mechanism 2 can buffer and reduce shock through the buffer spring 202 and the damper to protect the sealed sleeve body 1 from impact. The inner protective layer 3 is made of epoxy resin anti-corrosion coating, which can effectively resist the chemical corrosion that the fluid may bring and extend the service life of the base layer 4. As the main load-bearing structure, the base layer 4 is made of carbon steel, which gives it good strength and toughness, ensuring that it can stably support the entire sealed sleeve in various complex environments. The outer protective layer 5 is made of intumescent acrylic fireproof coating, which will expand rapidly when exposed to high temperature to form a heat insulation layer, effectively preventing the spread of fire from damaging the sealed sleeve.

[0026] Reference Figure 1-3 The sealed sleeve body 1 includes an outer pipe 102 and a sleeve body 104. Support blocks 103 are fixedly installed at the center of the four sides of the outer surface of the sleeve body 104. First fillers 105 are fixedly installed on the four sides of the outer surface of the sleeve body 104. Second fillers 107 are fixedly installed on the inner surface of the sleeve body 104. Two connecting flanges 101 are fixedly installed on the outer pipe 102. The four support blocks 103 are fixedly connected to the inner wall of the outer pipe 102. The pipe body 106 is fixedly installed on the inner surface of the second filler 107.

[0027] Specifically, in the sealed sleeve body 1, the outer pipe 102 and the sleeve body 104 are closely fitted together to form the main structure of the sealed sleeve body 1. The support block 103 plays a role in stabilizing the position of the sleeve body 104 inside the outer pipe 102, ensuring the coaxiality between the two, and making the whole structure more stable. The first filler 105 fills the gap between the sleeve body 104 and the outer pipe 102, which can play a role in shock absorption and further sealing, preventing external substances from entering through the gap. The second filler 107 fills the gap between the sleeve body 104 and the pipe body 106, which not only plays a sealing role, but also provides a certain buffer protection for the pipe body 106, avoiding damage caused by slight shaking of the pipe body 106. The connecting flange 101 facilitates the connection of the sealed sleeve body 1 with other pipes or equipment, and a reliable connection can be achieved by tightening bolts.

[0028] Reference Figure 1 , Figure 2 Both protection mechanisms 2 include a fixed block 201 and a support plate 205. Multiple buffer springs 202 are fixedly installed inside each of the two fixed blocks 201. A spring damper 203 is fixedly installed at the upper end of each of the multiple buffer springs 202. Multiple connecting blocks 204 are fixedly installed at the lower end of each of the two support plates 205. The lower ends of the multiple connecting blocks 204 are fixedly connected to the spring damper 203.

[0029] Specifically, in the protection mechanism 2, the fixing block 201 is tightly fixed to the upper and lower ends of the sealed sleeve body 1, providing a stable installation base for the entire protection mechanism 2. The buffer spring 202 can absorb some energy through its own elastic deformation when subjected to external impact, playing a preliminary buffering role. The spring damper 203 further dampens and controls the vibration of the buffer spring 202 to avoid secondary damage caused by the reciprocating vibration of the spring. The connecting block 204 firmly connects the spring damper 203 and the support plate 205 together. The support plate 205 directly bears the external impact force and transmits it to the buffer spring 202 and the spring damper 203 for buffering treatment.

[0030] Working principle: When the airtight sleeve with protective outer shell is used, if it is subjected to external mechanical impact, such as earthquake or vibration caused by construction, the buffer spring 202 and spring damper 203 of the protection mechanism 2 will respond quickly, weakening the impact force through buffering and damping, and avoiding direct damage to the main body 1 of the airtight sleeve. In the event of a fire, the intumescent acrylic fireproof coating of the outer protective layer 5 expands when heated, forming a dense heat insulation layer, preventing heat from being transferred to the base layer 4 and the internal pipe body 106, protecting the integrity of the internal structure and pipeline. At the same time, the inner protective layer 3 continues to play its anti-corrosion role, preventing chemical corrosion of the fluid inside the pipe body 106, ensuring that the entire airtight sleeve can work normally and stably in various complex environments, and ensuring the safe operation of the pipeline system in the civil defense project.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of airtight protective sleeve for civil defense, comprising a main body (1) and a base layer (4), characterized in that: The sealed sleeve body (1) is fixedly provided with protective mechanisms (2) at both the upper and lower ends, the inner surface of the base layer (4) is fixedly provided with an inner protective layer (3), and the outer surface of the base layer (4) is fixedly provided with an outer protective layer (5). The sealed sleeve body (1) includes an outer tube (102) and a sleeve body (104). A support block (103) is fixedly installed at the middle position of the outer surface of the sleeve body (104). A first filler (105) is fixedly installed at the outer surface of the sleeve body (104). A second filler (107) is fixedly installed on the inner surface of the sleeve body (104). Both of the protection mechanisms (2) include a fixing block (201) and a support plate (205). Multiple buffer springs (202) are fixedly installed inside the two fixing blocks (201). A spring damper (203) is fixedly installed at the upper end of the multiple buffer springs (202).

2. The airtight sleeve with a protective outer shell according to claim 1, characterized in that: Both ends of the outer tube (102) are fixedly provided with connecting flanges (101), and the four support blocks (103) are all fixedly connected to the inner wall of the outer tube (102).

3. The airtight sleeve with a protective outer shell according to claim 1, characterized in that: The inner surface of the second filler (107) is fixedly provided with a pipe body (106).

4. The airtight sleeve with a protective outer shell according to claim 1, characterized in that: Multiple connecting blocks (204) are fixedly installed at the lower ends of both support plates (205), and the lower ends of the multiple connecting blocks (204) are fixedly connected to the spring damper (203).

5. A protective airtight sleeve with a protective outer shell according to claim 1, characterized in that: The inner protective layer (3) is made of epoxy resin anti-corrosion coating.

6. A civil defense airtight sleeve with a protective outer shell according to claim 1, characterized in that: The base layer (4) is made of carbon steel.

7. A civil defense airtight sleeve with a protective outer shell according to claim 1, characterized in that: The outer protective layer (5) is made of intumescent acrylic fire-retardant coating.

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