High-temperature-resistant sealing device for fire-fighting pipeline

Abstract

The utility model relates to the technical field of fire-fighting pipeline sealing, in particular to a high-temperature-resistant sealing device for a fire-fighting pipeline. Comprising a fire-fighting cabinet with mutually butted fire-fighting water pipes and a flange plate device, and a flange plate I and a flange plate II of the flange plate device are positioned on adjacent fire-fighting water pipes and are matched and fastened with threaded holes through bolts; in addition, a double-layer sealing assembly is arranged, a sealing outer ring of the first sealing assembly is matched with an outer ring groove to block outside sundries, an auxiliary positioning flange plate, an inner ring groove of the second sealing assembly, a sealing inner ring and staggered elastic teeth are matched with a waterproof ring, leakage is prevented from the inside, and self-adaption deformation is achieved. The utility model achieves the effects of efficient sealing and stable connection, and solves the problems that the existing fire-fighting pipeline is single in connection sealing, easy to leak, unstable in structure and difficult to reliably operate under severe working conditions such as high temperature, water flow impact and the like.

Description

Technical Field

[0001] This utility model relates to the field of fire pipeline sealing technology, and in particular to a high-temperature resistant sealing device for fire pipelines. Background Technology

[0002] In the field of fire protection engineering, the sealing of fire protection piping systems is directly related to fire extinguishing efficiency and the safety of life and property. Once a leak occurs, the supply of fire-fighting water will be blocked, and fire-fighting operations will be in trouble.

[0003] A search revealed Chinese patent CN216078737U, which discloses a pipe connection structure for fire-fighting pipelines, including flanges, a sealing structure, an anti-detachment structure, and a fixing structure. The flanges are two in number and symmetrically distributed, with connecting pipes for connecting external water supply pipelines on their outer sides. The sealing structure is located between the two flanges. A single-layer rubber sealing ring combined with a simple flange connection is used. Based on the above search and existing technology, the following was found:

[0004] Existing sealing methods for fire protection pipeline connections have serious flaws. The core problem lies in the reliance on a single-layer rubber sealing ring. Under high-temperature conditions, the rubber sealing ring rapidly ages, softens, and loses elasticity, significantly reducing its sealing effectiveness. When subjected to water flow impact, the sealing ring is prone to displacement and loosening, failing to effectively prevent water leakage. Furthermore, simple flange connections lack reliable positioning and fixing structures, making flange misalignment during installation easy. This results in uneven stress on the sealing ring, extremely poor sealing stability, and frequent leaks, completely failing to meet the stringent sealing requirements of fire protection systems under complex and harsh conditions such as high temperatures and water flow impacts, posing a significant hazard to fire protection operations. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a high-temperature resistant sealing device for fire pipelines. The inner ring groove, sealing inner ring and interlocking elastic teeth of the sealing component two make it leak-proof from the inside and adapt to deformation.

[0006] The technical solution to achieve the purpose of this utility model is: a high-temperature resistant sealing device for fire-fighting pipelines, including a fire cabinet, wherein the input end of the fire cabinet is connected to multiple sets of interconnected fire water pipes, and further includes;

[0007] The flange assembly includes flange one and flange two on adjacent fire cabinets, and multiple sets of fasteners are provided between flange one and flange two for threaded fixation.

[0008] A sealing assembly is provided at the edges and inside of flange one and flange two for double sealing. The sealing assembly at the edges of flange one and flange two is sealing assembly one, and the sealing assembly inside flange one and flange two is sealing assembly two.

[0009] The sealing assembly 2 includes an inner ring groove formed inside the flange 2. A ring of teeth 2 is installed on the inner bottom surface of the inner ring groove. A sealing inner ring is installed inside the flange 1 and inserted into the inner ring groove. A ring of teeth 1 is installed on the end face of the sealing inner ring and is staggered with the teeth 2. The staggered teeth 1 and teeth 2 form a ring.

[0010] In some embodiments, waterproof ring one and waterproof ring two, aligned vertically, are provided on the outer side of the sealing inner ring and the outer side of the inner ring groove opening.

[0011] In some embodiments, the sealing assembly one includes a sealing outer ring located around the edge of flange one, and an outer ring groove is provided at the edge of flange two to fit and connect with the sealing outer ring.

[0012] In some embodiments, the second flange has a ring of equally spaced threaded holes, and the first flange is threaded with bolts that are adapted to the upper and lower threads of the threaded holes, thereby fixing the first flange and the second flange together by bolts.

[0013] In some embodiments, both tooth one and tooth two are arc-shaped elastic blocks.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] This utility model innovatively employs a double-layer sealing component design, which is the core key structure. Sealing component one is located at the edge of flange one and flange two, forming an outer protective barrier through the precise fit between the sealing outer ring and the outer ring groove. On one hand, it effectively prevents external dust and debris from intruding into the connection gap, preventing seal failure due to foreign matter inclusion; on the other hand, this structure provides initial positioning and fixation for the flanges, ensuring a stable foundation for subsequent sealing operations, greatly improving the accuracy and convenience of sealing component installation. Sealing component two is arranged inside flange one and flange two, using the inner ring groove, the sealing inner ring, and the staggered teeth one and two as core mating components, with each tooth employing an elastic block design. This unique structure allows sealing component two to not only fit tightly in a static state, preventing internal water leakage, but also possess dynamic self-adaptive capabilities, flexibly responding to minor deformations caused by thermal expansion and contraction of pipelines in high-temperature environments and vibrations during daily operation, continuously maintaining excellent sealing performance. In addition, the double protection of waterproof ring one and waterproof ring two further enhances the inner sealing effect, achieving a comprehensive and high-strength seal at the fire water pipe connection from the inside out. This completely solves the problem that the existing fire water pipe connection sealing method is single, has poor sealing effect, cannot adapt to harsh working conditions such as high temperature and water flow impact, and frequently leaks, thus endangering the reliability of the fire protection system. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the high-temperature resistant sealing device for fire pipelines provided in one embodiment of the present invention during installation;

[0018] Figure 2 This is a half-section three-dimensional structural diagram of the connection between two fire water pipes provided in one embodiment of the present invention;

[0019] Figure 3 This is a bottom view of the connection point of two fire water pipes provided in one embodiment of the present invention;

[0020] Figure 4 This is a split side view of the connection point of two fire water pipes provided in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Fire cabinet; 2. Fire water pipe; 3. Flange 1; 301. Sealing outer ring; 302. Sealing inner ring; 303. Tooth 1; 304. Waterproof ring 1; 4. Flange 2; 401. Threaded hole; 402. Outer ring groove; 403. Inner ring groove; 404. Tooth 2; 405. Waterproof ring 2; 5. Bolt. Detailed Implementation

[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] This utility model provides an improved high-temperature resistant sealing device for fire-fighting pipelines. The technical solution of this utility model is as follows:

[0025] A high-temperature resistant sealing device for fire-fighting pipelines includes a fire cabinet 1, wherein the input end of the fire cabinet 1 is connected to multiple sets of interconnected fire water pipes 2.

[0026] like Figure 1 - Figure 4 As shown, in one embodiment, a flange device is also included. The flanges include a first flange 3 and a second flange 4 on adjacent fire water pipes 2. The second flange 4 has a ring of equally spaced threaded holes 401. The first flange 3 is threaded with bolts 5 that are adapted to the upper and lower threads of the threaded holes 401. The first flange 3 and the second flange 4 are threadedly fixed together by the bolts 5. By opening the threaded holes 401 on the second flange 4, and using the bolts 5 threaded to the first flange 3 to be threaded and fixed with nuts, the first flange 3 and the second flange 4 are firmly connected together, ensuring the overall structural stability of the fire water pipe 2 connection and facilitating subsequent sealing and other related functions.

[0027] like Figure 2 As shown, in one embodiment, sealing assembly one includes a sealing outer ring 301 located around the edge of flange one 3, and an outer ring groove 402 formed at the edge of flange two 4 that fits into the sealing outer ring 301. Flange one 3 and flange two 4 are joined together by the upper and lower fitting of the sealing outer ring 301 and the outer ring groove 402 on their outer sides. This arrangement forms a first line of sealing at the outer edges of flange one 3 and flange two 4, effectively preventing external substances from entering the joint of the fire water pipe 2, enhancing the overall sealing performance, and simultaneously helping to fix the relative positions of the two flanges, laying the foundation for better functioning of sealing assembly two.

[0028] like Figure 2As shown, in one embodiment, the sealing assembly 2 includes an inner ring groove 403 formed inside the flange 2 4. A ring of spaced teeth 2 404 is installed on the inner bottom surface of the inner ring groove 403. A sealing inner ring 302 inserted into the inner ring groove 403 is installed on the inner side of the flange 1 3. A ring of teeth 1 303 is installed on the end face of the sealing inner ring 302, which is staggered with the teeth 2 404. The staggered teeth 1 303 and teeth 2 404 form a ring, and both teeth 1 303 and teeth 2 404 are arc-shaped elastic blocks. When fire water pipe 2 and fire water pipe 2 are connected by flange 1 3 and flange 2 4, the internal channels of the two fire water pipes 2 are connected to the central internal channel of flange 1 3 and flange 2 4. At this time, a sealing inner ring 302 is provided at the connection of the internal channels of flange 1 3 and flange 2 4, which is inserted into the inner ring groove 403. The sealing inner ring 302 is connected with teeth 1 303 that are interlocked with teeth 2 404 inside the inner ring groove 403. Teeth 2 404 and teeth 1 303 form a ring structure, which blocks the connection of the internal channels of flange 1 3 and flange 2 4. This design achieves a tight and stable sealing structure inside flange 3 and flange 4. The interlocking teeth 303 and 404 not only allow flange 3 and flange 4 to be connected but also prevent shaking or shifting after connection, facilitating subsequent threaded fixing of flange 3 and flange 4 with fasteners. At the same time, the elasticity of teeth 303 and 404 can better adapt to minor deformations that may occur under different working conditions, maintaining a good sealing effect and preventing water and other media in fire water pipe 2 from leaking from the internal channel connection.

[0029] like Figure 2 and Figure 4 As shown, in one embodiment, both the outer side of the sealing inner ring 302 and the outer side of the opening of the inner ring groove 403 are provided with vertically aligned waterproof rings 304 and 405. The vertically aligned waterproof rings 304 and 405, tightly fitted at the connection point of the inner channels of flanges 3 and 4, further enhance the sealing effect of the internal channel area at the connection between the fire water pipes 2 and 4, preventing aqueous solutions from seeping outwards from the inner connection point of flanges 3 and 4, thus strengthening the sealing effect. This arrangement provides further sealing protection at the connection point of the inner channels of flanges 3 and 4, providing double protection against leakage of internal water and other liquids. It also improves the sealing reliability of the entire sealing device under complex conditions such as long-term water flow impact and high temperatures within the fire water pipes 2, ensuring the normal and stable operation of the fire protection system.

[0030] The working principle and usage process of this utility model are as follows: When connecting fire water pipe 2, flange 3 and flange 4 are first initially fitted together using the sealing outer ring 301 and the outer ring groove 402, so that the two flanges are initially positioned on the outside and form a certain seal. Next, the sealing inner ring 302 on flange 3 is inserted into the inner ring groove 403 of flange 4, so that teeth 303 and 404 are staggered to form a ring-shaped sealing structure. The elasticity of teeth 303 and 404 maintains a tight and stable connection, while waterproof rings 304 and 405 fit tightly to further strengthen the inner seal. Then, using the threaded hole 401 on flange 4, the bolt 5 on flange 3 is passed through and fixed with a nut, firmly fixing flange 3 and flange 4 together. Finally, a high-temperature resistant and reliable sealing effect is achieved at the connection of fire water pipe 2, ensuring the normal operation of water flow and other related functions in the fire protection system.

[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A high-temperature resistant sealing device for fire-fighting pipelines, comprising a fire cabinet (1), wherein the input end of the fire cabinet (1) is connected to multiple sets of interconnected fire water pipes (2), characterized in that: Also includes; The flange assembly includes a flange one (3) and a flange two (4) on adjacent fire cabinets (1), and multiple sets of fasteners are provided between flange one (3) and flange two (4) for threaded fixation. The sealing assembly is provided at the edges and inside of flange one (3) and flange two (4) for double sealing. The sealing assembly at the edges of flange one (3) and flange two (4) is sealing assembly one, and the sealing assembly inside flange one (3) and flange two (4) is sealing assembly two. The sealing assembly 2 includes an inner ring groove (403) formed inside the flange 2 (4). A ring of teeth 2 (404) is installed on the inner bottom surface of the inner ring groove (403). A sealing inner ring (302) inserted into the inner ring groove (403) is installed on the inner side of the flange 1 (3). A ring of teeth 1 (303) is installed on the end face of the sealing inner ring (302) and is staggered with the teeth 2 (404). The staggered teeth 1 (303) and teeth 2 (404) form a ring.

2. The high-temperature resistant sealing device for fire-fighting pipelines according to claim 1, characterized in that: The outer side of the sealing inner ring (302) and the outer side of the opening of the inner ring groove (403) are provided with waterproof ring one (304) and waterproof ring two (405) aligned vertically.

3. The high-temperature resistant sealing device for fire-fighting pipelines according to claim 1, characterized in that: The sealing assembly includes a sealing outer ring (301) located around the edge of flange one (3), and an outer ring groove (402) that fits and connects with the sealing outer ring (301) at the edge of flange two (4).

4. A high-temperature resistant sealing device for fire-fighting pipelines according to claim 1, characterized in that: The second flange (4) has a ring of equally spaced threaded holes (401), and the first flange (3) is threaded with bolts (5) that are adapted to the upper and lower threads (401). The first flange (3) and the second flange (4) are threadedly fixed by the bolts (5).

5. A high-temperature resistant sealing device for fire-fighting pipelines according to claim 1, characterized in that: Both tooth one (303) and tooth two (404) are arc-shaped elastic blocks.

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