Pressure reducing and stabilizing device of external pressure storage heptafluoropropane fire extinguishing system

Abstract

The utility model discloses a pressure reducing and stabilizing device for an external pressure storage heptafluoropropane fire extinguishing system, which belongs to the technical field of fire extinguishing, and is characterized by comprising a bottom plate, a pressure reducing and stabilizing valve body, two instruments and two flange bodies. In the prior art, the positions of the flanges are inconvenient to seal and protect, especially when the surrounding installation environment is severe, a sealing gasket between the flanges can be gradually influenced by air oxidation, the sealing gasket can be aged, hardened, embrittled and the like under the effects of long-term contact with air and environmental factors such as temperature and humidity, and then the sealing performance is reduced. The problems of unstable pressure, abnormal flow and the like of the pressure reducing and stabilizing valve caused by the problems of leakage and the like are solved, so that the stable work of the pressure reducing and stabilizing valve is influenced, the pressure reducing and stabilizing functions cannot be accurately realized, and the reliability of the whole fire extinguishing system is finally influenced.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing technology, and in particular to a pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system. Background Technology

[0002] Externally pressurized heptafluoropropane fire extinguishing systems are high-efficiency fire suppression devices. In these systems, the extinguishing agent cylinder group and the driving gas cylinder group are separate. During fire suppression, the high-pressure gas in the driving gas cylinder group is released first, pressurizing the heptafluoropropane extinguishing agent in the extinguishing agent cylinder group through pipelines, causing it to be sprayed from the nozzle. Upon contact with the fire source, the heptafluoropropane extinguishing agent rapidly vaporizes and absorbs a large amount of heat, causing a sharp drop in the surface temperature of the burning material. Simultaneously, it inhibits free radicals in the combustion reaction, thus achieving the purpose of fire suppression. In this process, the pressure reducing and stabilizing valve plays a crucial role. For example, some externally pressurized heptafluoropropane fire extinguishing systems use a switching valve device with constant pressure and stabilizing function. The extinguishing agent cylinder group valve is only opened after the set pressure is reached, and the driving gas is output at a constant and stable pressure for a certain period of time.

[0003] Patent No. "202022458466.X" and Patent Name "A Pilot-Operated Pressure Regulating Valve" are limited by their own structure. Like all pilot-operated pressure reducing and regulating valves, when it is necessary to change the outlet liquid outlet pressure, the user needs to manually adjust it on-site. This will cause great inconvenience to the user and is not conducive to improving work efficiency.

[0004] The existing patent (publication number: CN220488431U) describes a new type of pilot-operated pressure reducing and stabilizing valve. This new type of valve allows for real-time monitoring of the outlet and inlet water pressures without the need for on-site personnel. It also allows for wireless adjustment of the outlet water pressure. This new type of valve provides convenience for personnel by allowing them to easily adjust and set the outlet water pressure without being on-site, and it also improves work efficiency.

[0005] To address the aforementioned issues, existing patents offer solutions. However, in some existing externally pressurized heptafluoropropane fire extinguishing systems, the pressure reducing and stabilizing valves are difficult to seal after installation, especially in harsh environments. The gaskets between the flanges gradually become oxidized by the air. Prolonged contact with air and exposure to environmental factors such as temperature and humidity can cause the gaskets to age, harden, and become brittle, leading to decreased sealing performance and leaks. This results in unstable pressure and abnormal flow in the pressure reducing and stabilizing valves, affecting their stable operation and preventing them from accurately achieving pressure reduction and stabilization functions, ultimately impacting the reliability of the entire fire extinguishing system.

[0006] To address this, a pressure-reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system. This device addresses the problem that in some existing externally pressurized heptafluoropropane fire extinguishing systems, the flange position of the pressure reducing and stabilizing valve is inconvenient to seal after installation, especially in harsh environments. The sealing gasket between the flanges gradually becomes oxidized by air, and under the influence of temperature, humidity, and other environmental factors, it ages, hardens, and becomes brittle, leading to decreased sealing performance and leakage. This results in unstable pressure and abnormal flow in the pressure reducing and stabilizing valve, affecting its stable operation and preventing it from accurately achieving pressure reduction and stabilization functions, ultimately impacting the reliability of the entire fire extinguishing system.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system, comprising a base plate, a pressure reducing and stabilizing valve body, two instruments and two flange bodies, with protective mechanisms provided at the four corners of the top of the base plate, and a connecting mechanism provided at the top of the base plate;

[0009] The protective mechanism includes a protective cover, a sealing ring, a support plate, and a limiting rod. The side of the support plate closest to the protective cover is fixedly connected to the protective cover. The side of the sealing ring closest to the protective cover is fixedly connected to the protective cover. The side of the limiting rod closest to the support plate is rotatably connected to the support plate. The bottom of the support plate is in movable contact with the top of the base plate. The protective cover covers the surface of the flange body. The surface of the sealing ring is in close contact with the surface of the pressure reducing and stabilizing valve body. The surface of the front sealing ring is in close contact with the surface of the rear sealing ring.

[0010] Preferably, each of the four corners of the top of the base plate is fixedly connected to a fixing plate, and the limiting rod is threadedly connected inside the fixing plate.

[0011] Preferably, a support plate is fixedly connected to the surface of the fixing plate, and the bottom of the support plate is fixedly connected to the top of the base plate.

[0012] Preferably, the protective cover is made of stainless steel, and the sealing ring is made of silicone rubber.

[0013] Preferably, the connecting mechanism includes a slot, a fixing block, and two screws. The slot is located inside the fixing block, the bottom of the fixing block is fixedly connected to the top of the base plate, and the screws are movably inserted into the fixing block.

[0014] Preferably, a connecting block is fixedly connected to the bottom of the pressure reducing and stabilizing valve body. The connecting block is movably inserted into the inside of the slot. The rear side of the screw passes through the fixed block and the connecting block in sequence and extends to the outside of the fixed block. The screw is connected to the internal thread of the connecting block.

[0015] Preferably, handles are fixedly connected to both the front and rear sides of the base plate.

[0016] Preferably, the bottom of the base plate is fixedly connected with four rubber blocks, which are evenly distributed at the four corners of the bottom of the base plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application can protect the flange by setting a protective mechanism, which facilitates the protection of the sealing gasket between the outer flange and the flange body, greatly slows down its aging rate, extends the maintenance period of the pressure reducing valve body, and reduces labor costs.

[0019] 2. This application connects the pressure reducing and stabilizing valve body to the base plate by setting a connecting mechanism, inserting the connecting block into the slot, using screws to pass through the fixing block and connect with the internal threads of the connecting block, and tightening the screws. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the pressure reducing and stabilizing device of the externally pressurized heptafluoropropane fire extinguishing system of this utility model;

[0021] Figure 2 This is a three-dimensional connection diagram of the base plate and the fixing plate in this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the bottom of the pressure reducing and stabilizing valve body in this utility model;

[0023] Figure 4 This is a three-dimensional connection diagram of the protective mechanism in this utility model;

[0024] Figure 5 This is a three-dimensional connection diagram of the fixing plate and the limiting rod in this utility model;

[0025] Figure 6 This is a three-dimensional exploded view of the screw and fixing block in this utility model.

[0026] In the diagram, 1. Base plate; 2. Protective mechanism; 201. Protective cover; 202. Sealing ring; 203. Support plate; 204. Limiting rod; 3. Instrument; 4. Pressure reducing and stabilizing valve body; 5. Rubber support block; 6. Fixing plate; 7. Connecting block; 8. Support plate; 9. Connecting mechanism; 901. Slot; 902. Fixing block; 903. Screw; 10. Flange body; 11. Handle. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 The present invention provides the following technical solution:

[0029] A pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system includes a base plate 1, a pressure reducing and stabilizing valve body 4, two instruments 3 and two flange bodies 10. Protective mechanisms 2 are provided at the four corners of the top of the base plate 1, and a connecting mechanism 9 is provided at the top of the base plate 1.

[0030] The protective mechanism 2 includes a protective cover 201, a sealing ring 202, a support plate 203, and a limiting rod 204. The side of the support plate 203 near the protective cover 201 is fixedly connected to the protective cover 201. The side of the sealing ring 202 near the protective cover 201 is fixedly connected to the protective cover 201. The side of the limiting rod 204 near the support plate 203 is rotatably connected to the support plate 203. The bottom of the support plate 203 is in movable contact with the top of the base plate 1. The protective cover 201 covers the surface of the flange body 10. The surface of the sealing ring 202 is in close contact with the surface of the pressure reducing and stabilizing valve body 4. The surface of the front sealing ring 202 is in close contact with the surface of the rear sealing ring 202.

[0031] In this embodiment: the pressure reducing and stabilizing valve body 4 is inserted into the slot 901 of the fixing block 902 through the bottom connecting block 7 and fixed to the base plate 1 with screws 903. The protective cover 201 and the sealing ring 202 protect the flange body 10. The stainless steel protective cover 201 blocks external impurities and moisture, and the silicone rubber sealing ring 202 enhances the sealing performance, prevents air from entering, and slows down the aging of the sealing gasket between the flange body 10 and the external connection method. The support plate 203 connects the protective cover 201 and the limiting rod 204. Rotating the limiting rod 204 can adjust the front and rear position of the protective cover 201, which facilitates the connection of the flange body 10 to the external flange. The support plate 203 is in contact with the base plate 1 to prevent the limiting rod 204 from rotating and causing the protective cover 201 to rotate. The support plate 8 next to the fixing plate 6 enhances stability. The rubber support block 5 at the bottom of the base plate 1 ensures that the base plate 1 is placed stably. The handle 11 is convenient for handling. During transport, two instruments 3 monitor parameters such as pressure of the pressure reducing and stabilizing valve body 4. Protected by the protective cover 201 and sealing ring 202, the aging of the gasket between the flange body 10 and the external connection method can be greatly slowed down. This solves the problem that in some existing external pressure storage heptafluoropropane fire extinguishing systems, the flange position is inconvenient for sealing protection after installation, especially when the surrounding installation environment is relatively harsh. The gasket between the flanges will gradually be affected by air oxidation. Under the long-term contact with air and the effects of environmental factors such as temperature and humidity, the gasket will age, harden, and become brittle, which will lead to a decrease in sealing performance and leakage problems. This will cause the pressure reducing and stabilizing valve to have unstable pressure and abnormal flow, thus affecting its stable operation and failing to accurately achieve the pressure reduction and stabilization functions, ultimately affecting the reliability of the entire fire extinguishing system.

[0032] Specifically, such as Figure 1 As shown, the four corners of the top of the base plate 1 are fixedly connected to the fixing plates 6, and the limiting rods 204 are threadedly connected to the inside of the fixing plates 6.

[0033] Specifically, such as Figure 2 and Figure 5 As shown, a support plate 8 is fixedly connected to the surface of the fixed plate 6, and the bottom of the support plate 8 is fixedly connected to the top of the base plate 1.

[0034] Specifically, such as Figure 5 As shown, the protective cover 201 is made of stainless steel, and the sealing ring 202 is made of silicone rubber.

[0035] In this embodiment: the limiting rod 204 is threaded into the inside of the fixed plate 6, which facilitates the movement of the protective cover 201 when the limiting rod 204 rotates. The fixed plate 6 is supported by the support plate 8, which makes the fixed plate 6 more stable and facilitates stable support for the protective cover 201. The protective cover 201 is made of stainless steel, which is strong and corrosion resistant. It covers the surface of the flange body 10 and plays a role in blocking external impurities and moisture erosion. The sealing ring 202 is made of silicone rubber, which has good flexibility and strong corrosion resistance. It is in close contact with the surface of the pressure reducing and stabilizing valve body 4, which enhances the protective sealing and prevents air and moisture from entering the interior of the protective cover 201.

[0036] Specifically, such as Figure 2 and Figure 6 As shown, the connecting mechanism 9 includes a slot 901, a fixing block 902 and two screws 903. The slot 901 is opened inside the fixing block 902. The bottom of the fixing block 902 is fixedly connected to the top of the base plate 1. The screws 903 are movably inserted into the fixing block 902.

[0037] Specifically, such as Figure 2 , Figure 3 and Figure 6 As shown, a connecting block 7 is fixedly connected to the bottom of the pressure reducing and stabilizing valve body 4. The connecting block 7 is movably inserted into the inside of the slot 901. The rear side of the screw 903 passes through the fixed block 902 and the connecting block 7 in sequence and extends to the outside of the fixed block 902. The screw 903 is connected to the internal thread of the connecting block 7.

[0038] In this embodiment: by inserting the connecting block 7 into the slot 901, and using the screw 903 to pass through the fixing block 902 and thread it to the connecting block 7, the pressure reducing and stabilizing valve body 4 can be connected to the base plate 1.

[0039] Specifically, such as Figure 2 As shown, handles 11 are fixedly connected to both the front and rear sides of the base plate 1.

[0040] Specifically, such as Figure 2 As shown, four rubber support blocks 5 are fixedly connected to the bottom of the base plate 1 and are evenly distributed at the four corners of the bottom of the base plate 1.

[0041] In this embodiment, four rubber support blocks 5 are evenly distributed at the bottom of the base plate 1 to ensure that the base plate 1 is placed stably and to facilitate gripping of the handle 11. By gripping the handle 11, the base plate 1 can be easily moved.

[0042] Working principle: By inserting the connecting block 7 at the bottom of the pressure reducing and stabilizing valve body 4 into the slot 901 of the fixing block 902, and using the screw 903 to pass through the fixing block 902 and threadedly connect to the connecting block 7, the pressure reducing and stabilizing valve body 4 is fixed on the base plate 1. To address the issue of the flange body 10 being susceptible to environmental influences, a protective mechanism 2 is used. The protective cover 201 is made of stainless steel, which is high-strength and corrosion-resistant, covering the surface of the flange body 10 to block external impurities and moisture erosion. The sealing ring 202 is made of silicone rubber, which has good flexibility and strong corrosion resistance. It makes tight contact with the surface of the pressure reducing and stabilizing valve body 4, enhancing the protective sealing. To prevent air and moisture from entering the interior of the protective cover 201 and slow down the aging of the gasket between the flange body 10 and the external connection flange, the support plate 203 connects the protective cover 201 and the limiting rod 204. The limiting rod 204 is rotatably connected to the support plate 203 and threadedly connected to the fixing plates 6 at the four corners of the base plate 1. By rotating the limiting rod 204, the front and rear positions of the protective cover 201 can be adjusted, facilitating the connection between the external connection flange and the flange body 10. By maintaining contact with the base plate 1, the support plate 203 prevents the protective cover 201 from rotating when the limiting rod 204 is rotated. The support plate 8 next to the fixing plate 6 enhances the stability of the connection between the fixing plate 6 and the base plate 1. Four rubber support blocks 5 are evenly distributed at the bottom of the base plate 1 to ensure the base plate 1 is placed stably and to facilitate gripping of the handle 11. The handles 11 on the front and rear sides of the base plate 1 facilitate the handling of the device and are easy to install and maintain. Two instruments 3 are used to monitor parameters such as pressure when the pressure reducing and stabilizing valve body 4 is working, providing data support for the stable operation of the system. The flange body 10 is covered and sealed by the protective cover 201 and the sealing ring 202, which can greatly slow down the aging of the gasket between the flange body 10 and the external connection flange, extend the maintenance period of the pressure reducing and stabilizing valve body 4, reduce labor, and solve the pressure reduction and stabilization problem of some existing externally pressurized heptafluoropropane fire extinguishing systems. After installation, the flange location is inconvenient for sealing protection, especially in harsh surrounding environments. The gasket between the flanges will gradually be affected by air oxidation. With long-term contact with air and the influence of environmental factors such as temperature and humidity, the gasket will age, harden, and become brittle, leading to a decline in sealing performance and leakage. This can cause the pressure-reducing and stabilizing valve to experience unstable pressure and abnormal flow, thus affecting its stable operation and making it unable to accurately achieve pressure reduction and stabilization functions. Ultimately, this affects the reliability of the entire fire extinguishing system. It should be noted that the pressure-reducing and stabilizing valve body 4 is a mature technology that has already been published and will not be elaborated on here.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system, comprising a base plate (1), a pressure reducing and stabilizing valve body (4), two instruments (3), and two flange bodies (10), characterized in that: The base plate (1) is provided with protective mechanisms (2) at the four corners of its top, and a connecting mechanism (9) is provided at the top of the base plate (1). The protective mechanism (2) includes a protective cover (201), a sealing ring (202), a support plate (203), and a limiting rod (204). The side of the support plate (203) near the protective cover (201) is fixedly connected to the protective cover (201). The side of the sealing ring (202) near the protective cover (201) is fixedly connected to the protective cover (201). The side of the limiting rod (204) near the support plate (203) is rotatably connected to the support plate (203). The bottom of the support plate (203) is in movable contact with the top of the base plate (1). The protective cover (201) covers the surface of the flange body (10). The surface of the sealing ring (202) is in close contact with the surface of the pressure reducing and stabilizing valve body (4). The surface of the front sealing ring (202) is in close contact with the surface of the rear sealing ring (202).

2. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 1, characterized in that: The four corners of the top of the base plate (1) are fixedly connected to the fixing plates (6), and the limiting rod (204) is threadedly connected to the inside of the fixing plates (6).

3. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 2, characterized in that: A support plate (8) is fixedly connected to the surface of the fixed plate (6), and the bottom of the support plate (8) is fixedly connected to the top of the base plate (1).

4. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 1, characterized in that: The protective cover (201) is made of stainless steel, and the sealing ring (202) is made of silicone rubber.

5. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 1, characterized in that: The connecting mechanism (9) includes a slot (901), a fixing block (902) and two screws (903). The slot (901) is opened inside the fixing block (902). The bottom of the fixing block (902) is fixedly connected to the top of the base plate (1). The screws (903) are movably inserted into the fixing block (902).

6. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 5, characterized in that: The bottom of the pressure reducing and stabilizing valve body (4) is fixedly connected to a connecting block (7). The connecting block (7) is movably inserted into the slot (901). The rear side of the screw (903) passes through the fixing block (902) and the connecting block (7) in sequence and extends to the outside of the fixing block (902). The screw (903) is threadedly connected to the inside of the connecting block (7).

7. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 1, characterized in that: Handles (11) are fixedly connected to both the front and rear sides of the base plate (1).

8. The pressure reducing and stabilizing device for an externally pressurized heptafluoropropane fire extinguishing system according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to a rubber support block (5), and the number of the rubber support blocks (5) is four and they are evenly distributed at the four corners of the bottom of the base plate (1).

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