A spraying device applied to an explosion suppression system of small-caliber pipeline or small equipment

Abstract

The utility model discloses a kind of spraying devices applied to small-bore pipeline or small equipment's explosion suppression system, it is related to explosion suppression spraying technical field, including spraying flange, spraying flange adapter, high-pressure hose adapter;The utility model adopts integrated spraying flange and spherical vault combination, only need bolt connection and thread adapter can complete installation;Spherical vault structure makes two spraying flange adapters mirror image symmetry arrangement, forms 180 opposite injection, generates cross inhibitor curtain on pipeline axial section, and coverage range is promoted 3 times;It can be popularized to DN50-DN100 pipeline, small grinder, dust filter cartridge and the like scene, fills the small-bore equipment explosion suppression technology blank.The utility model realizes efficient explosion suppression by extremely simple structure, with low cost, easy to install, full coverage, high reliability and the like advantages, can be widely applied in explosion suppression spraying technical field, and it has important value to improve industrial dust explosion prevention and control level.

Description

Technical Field

[0001] This utility model relates to the field of explosion suppression spraying technology, specifically a spraying device for explosion suppression systems applied to small-diameter pipes or small equipment. Background Technology

[0002] Dust explosions are a common and significant safety threat in industries such as coal, chemicals, pharmaceuticals, food, and animal feed. The mechanism involves combustible dust mixing with air in a confined space to form a dust cloud, which ignites instantly upon contact with an ignition source, causing a rapid increase in pressure. Currently, industrial applications primarily employ three types of technical measures to address this risk: explosion venting, explosion isolation, and explosion suppression.

[0003] Explosion venting: Releasing explosive pressure through a pre-designed pressure relief port. However, in small-diameter pipes or small equipment, limited space may prevent the provision of sufficient venting area, leading to incomplete venting, debris splashing, or even secondary explosions.

[0004] Explosion-proof: Explosion-proof valves are used to block the propagation of flames. However, the propagation speed of an explosion over a short distance is extremely fast, and the response time of existing explosion-proof valves is difficult to match, and installation in small-diameter pipes is also difficult.

[0005] Explosion suppression: Rapidly spraying inhibitors in the early stages of an explosion to extinguish the flames. Existing explosion suppression spraying devices generally suffer from the following drawbacks:

[0006] It has a complex structure, many parts, complicated processing and assembly processes, and high costs.

[0007] The nozzle arrangement is limited by space, resulting in insufficient spray angle and coverage area, making it difficult to completely cover the flame;

[0008] Installation requires specialized tools or welding for fixation, the on-site construction period is long, and maintenance is inconvenient.

[0009] The aforementioned defects are particularly prominent in small-diameter pipes (DN≤100mm) or small reactors, dust collectors, and other equipment:

[0010] The combustion rate is faster and the explosion energy is more concentrated, which places higher demands on the response speed of the explosion suppression system.

[0011] Due to the limited internal space, traditional nozzles cannot form an effective inhibitor curtain.

[0012] The equipment has a low pressure tolerance; any delay or spray dead zone could lead to catastrophic damage.

[0013] Therefore, there is an urgent need for an explosion suppression spraying device that is simple in structure, responds quickly, is easy to install, and can achieve wide-angle, full-coverage spraying to solve the explosion suppression problem for small-diameter pipes and small equipment. Utility Model Content

[0014] The purpose of this utility model is to provide a spraying device for explosion suppression systems applied to small-diameter pipes or small equipment, so as to solve the many defects of existing explosion venting, explosion isolation and explosion suppression technologies mentioned in the background art, and the problems are particularly prominent in small-diameter pipes (DN≤100mm) or small reaction vessels, dust collectors and other equipment.

[0015] To achieve the above objectives, this utility model provides the following technical solution: a spraying device for explosion suppression systems applied to small-diameter pipes or small equipment, comprising a spraying flange, a spraying flange adapter, and a high-pressure hose adapter; the spraying flange is annularly arranged with multiple bolt holes evenly distributed around its edge, and bolts are used to connect and fix the spraying flange to the equipment body; a convex spherical dome is provided on the top surface of the spraying flange above its central circular hole, and two threaded holes are provided on the top surface of the spherical dome, each threadedly connected to a spraying flange adapter; the spraying flange adapter is a hollow sealing element with different types of threads at both ends; the high-pressure hose adapter connects and fixes the high-pressure hose to the spraying flange adapter.

[0016] Preferably, the center of the spherical dome and the center of the spray flange are on the same vertical line.

[0017] Preferably, the two threaded holes are arranged in a mirror-symmetrical manner in a vertical plane passing through the center of the spherical dome.

[0018] Preferably, a plurality of reinforcing ribs are evenly distributed in a ring between the outer surface of the spherical dome and the top surface of the spray flange.

[0019] Furthermore, the spray flange adapter includes a pipe thread on the upper outer wall that is threadedly connected to the high-pressure hose adapter, and a tapered pipe thread on the lower outer wall that is threadedly connected to the threaded hole, with a hexagonal outer wall provided between the pipe thread and the tapered pipe thread.

[0020] Furthermore, the inner wall of the high-pressure hose adapter is provided with an internal thread and is fixedly connected to the pipe thread, and the outer wall is provided with an outwardly protruding hexagonal connector outer wall; the high-pressure hose is placed between the internal thread and the pipe thread.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The structure of this utility model is simplified and the cost is reduced: the combination of an integrated spray flange and a spherical dome reduces the number of parts by more than 50%; installation can be completed with only bolt connection and threaded conversion, without welding or special tooling, reducing processing and assembly time by 60% and reducing the overall cost by 40%.

[0023] 2. Improved spraying performance: The spherical dome structure allows the two spraying flanges to be arranged in a mirror symmetrical manner, forming a 180° opposing spray, which generates a cross-inhibitor curtain on the axial section of the pipe, increasing the coverage area by 3 times; the collinear design of the sphere center and the flange center ensures the maximum spray angle and eliminates spray dead zones. Experiments have verified that it can completely cover the flame in the pipe with a diameter ≤100mm within 5ms.

[0024] 3. Convenient installation and maintenance: Modular design: Spraying flange, adapter, and high-pressure hose can all be replaced independently, reducing maintenance time by 70%; Universal interface: The spraying flange adapter adopts a double-thread structure with upper pipe thread and lower tapered pipe thread, which is compatible with standard high-pressure hoses and explosion suppression systems, and has strong field adaptability.

[0025] 4. Enhanced safety and reliability: The ring-shaped uniform distribution design of the reinforcing ribs increases the pressure-bearing capacity of the spherical dome by 2 times, avoiding deformation and failure under explosive impact; the tapered pipe thread connection provides a self-sealing function, with no leakage under 20MPa pressure, meeting the requirements for instantaneous injection of high-pressure explosives.

[0026] 5. Expanded Applicable Scenarios: This device can be extended to DN50-DN100 pipelines, small grinding mills, dust collector filter cartridges, and other scenarios, filling the gap in explosion suppression technology for small-diameter equipment. Third-party testing shows an explosion suppression success rate of ≥99.2%, significantly better than the 85% of existing technologies.

[0027] In summary, this utility model achieves efficient explosion suppression through a minimalist structure, and has the advantages of low cost, easy installation, full coverage, and high reliability. It can be widely used in the field of explosion suppression spraying technology and has important value for improving the level of industrial dust explosion prevention and control. Attached Figure Description

[0028] Figure 1 This is the front view of the present utility model;

[0029] Figure 2 for Figure 1 Top view;

[0030] Figure 3 This is the front view of the spray flange;

[0031] Figure 4 for Figure 3 Government view;

[0032] Figure 5 Front view of the spray flange adapter;

[0033] Figure 6 for Figure 5 Top view;

[0034] Figure 7 Front view of the high-pressure hose adapter;

[0035] Figure 8 for Figure 7 Top view;

[0036] In the diagram: Spray flange-1, bolt hole-11, spherical dome-12, threaded hole-13, reinforcing rib-14, spray flange adapter-2, pipe thread-21, tapered pipe thread-22, hexagonal outer wall-23, high-pressure hose adapter-3, internal thread-31, hexagonal connector outer wall-32. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to Figure 1-8 , Figure 1 This is the front view of the present utility model; Figure 2 for Figure 1 Top view; Figure 3 This is the front view of the spray flange; Figure 4 for Figure 3 Government view; Figure 5 Front view of the spray flange adapter; Figure 6 for Figure 5 Top view; Figure 7 Front view of the high-pressure hose adapter; Figure 8 for Figure 7 Top view.

[0039] This utility model provides a spraying device for explosion suppression systems applied to small-diameter pipes or small equipment, including a spraying flange 1, a spraying flange adapter 2, and a high-pressure hose adapter 3.

[0040] The spray flange 1 is annularly arranged, with multiple bolt holes 11 evenly distributed around its edge. Bolts can be used to connect and fix the spray flange 1 to the equipment body, ensuring a stable and reliable connection between the device and the equipment body under vibration or other operating conditions. A convex spherical dome 12 is provided on the top surface of the spray flange 1 above its central circular hole. The center of the spherical dome 12 is on the same vertical line as the center of the spray flange 1. The use of the spherical dome 12 effectively prevents dust from entering the device. The top accumulates, reducing the risk of explosion; on the top surface of the spherical dome 12, two threaded holes 13 are mirror-symmetrically arranged in a vertical plane passing through its center, and each is threadedly connected to a spraying flange adapter 2, which can further disperse the explosion suppressant and more evenly cover the target area; multiple reinforcing ribs 14 are evenly distributed in a ring between the outer surface of the spherical dome 12 and the top surface of the spraying flange 1, which can effectively disperse the stress generated by the spraying flange 1 under pressure, improve its strength, and ensure the normal operation of the entire spraying device.

[0041] The spray flange adapter 2 is a hollow sealing component with different types of threads at both ends. It includes a pipe thread 21 on the upper outer wall that is threaded to the high-pressure hose adapter 3, and a tapered pipe thread 22 on the lower outer wall that is threaded to the threaded hole 13. A hexagonal outer wall 23 is provided between the pipe thread 21 and the tapered pipe thread 22. The installation is assisted by the hexagonal outer wall 23, which can greatly improve the sealing performance and installation efficiency.

[0042] The high-pressure hose adapter 3 is used to connect and fix the high-pressure hose to the spray flange adapter 2. Its inner wall is provided with an internal thread 31 for connection and fixation with the pipe thread 21, and its outer wall is provided with an outwardly protruding hexagonal connector outer wall 32 for auxiliary use when threaded connection. In use, the high-pressure hose is placed between the internal thread 31 and the pipe thread 21. The threaded connection can achieve a tight fit between the connector and the high-pressure hose, which has good self-locking performance, ensuring that there will be no leakage under high pressure conditions. At the same time, it avoids dust explosion caused by static electricity or other ignition sources due to leakage, and ensures continuous and stable delivery of the explosion suppressant.

[0043] Although embodiments of the present invention have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, it will be understood by those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention and without creative effort are within the scope of protection of the present invention.

Claims

1. A spraying device for explosion suppression systems applied to small-diameter pipes or small equipment, characterized in that: The equipment includes a spray flange (1), a spray flange adapter (2), and a high-pressure hose adapter (3). The spray flange (1) is annularly arranged with multiple bolt holes (11) evenly distributed around its edge. The spray flange (1) is connected and fixed to the equipment body with bolts. A convex spherical dome (12) is provided on the top surface of the spray flange (1) above its central circular hole. Two threaded holes (13) are provided on the top surface of the spherical dome (12), and the spray flange adapter (2) is threadedly connected to each of them. The spray flange adapter (2) is a hollow sealing element with different types of threads at both ends. The high-pressure hose adapter (3) connects and fixes the high-pressure hose to the spray flange adapter (2).

2. The spraying device for explosion suppression systems applied to small-diameter pipes or small equipment according to claim 1, characterized in that: The center of the spherical dome (12) and the center of the spray flange (1) are on the same vertical line.

3. The spraying device for explosion suppression systems applied to small-diameter pipes or small equipment according to claim 1, characterized in that: The two threaded holes (13) are arranged in a mirror symmetric configuration in a vertical plane passing through the center of the spherical dome (12).

4. The spraying device for explosion suppression systems applied to small-diameter pipes or small equipment according to claim 1, characterized in that: Multiple reinforcing ribs (14) are evenly distributed in a ring between the outer surface of the spherical dome (12) and the top surface of the spray flange (1).

5. The spraying device for explosion suppression systems applied to small-diameter pipes or small equipment according to claim 1, characterized in that: The spray flange adapter (2) includes a pipe thread (21) on the upper outer wall and threadedly connected to the high pressure hose adapter (3), and a tapered pipe thread (22) on the lower outer wall and threadedly connected to the threaded hole (13). A hexagonal outer wall (23) is provided between the pipe thread (21) and the tapered pipe thread (22).

6. The spraying device for explosion suppression systems applied to small-diameter pipes or small equipment according to claim 5, characterized in that: The high-pressure hose adapter (3) has an internal thread (31) on its inner wall and is connected and fixed to the pipe thread (21). The outer wall has a protruding hexagonal connector outer wall (32). The high-pressure hose is placed between the internal thread (31) and the pipe thread (21).

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