Internal pressure storage type heptafluoropropane fire extinguishing device

Abstract

The utility model discloses an internal pressure storage type heptafluoropropane fire extinguishing device which comprises a supporting shell, a spring is arranged at the bottom of the supporting shell, a fire extinguishing tank is arranged on the spring, a sliding rod is arranged on the side wall of the fire extinguishing tank, the sliding rod is in sliding connection with the supporting shell, a metal guide block is arranged on the sliding rod, a detection box is arranged on the side wall of the supporting shell, and the metal guide block is in sliding connection with the detection box. A control box is arranged in the detection box, a gravity detection table used for alarming is arranged below the control box, a conductive groove is formed in the gravity detection table, and the conductive groove is used in cooperation with the metal guide block; when the fire extinguishing device is used, heptafluoropropane is sprayed out under the action of nitrogen, the weight of the fire extinguishing tank is reduced, the spring releases elasticity, the fire extinguishing tank is slowly lifted, the fire extinguishing tank drives the sliding rod and the metal guide block to ascend, and when the metal guide block is inserted into the conductive groove to be in contact with the conductive sheet, the alarm circuit forms a closed circuit, and the alarm rings out; and a user is reminded of complete ejection of heptafluoropropane, so that the phenomenon of heptafluoropropane waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heptafluoropropane fire extinguishing devices, in particular to an internal pressure storage type heptafluoropropane fire extinguishing device. Background Art

[0002] Heptafluoropropane is a clean gas chemical fire extinguishing agent that mainly extinguishes fire chemically but also has physical fire extinguishing effects. It is a polyfluorinated alkane. It is colorless, odorless, low in toxicity, non-conductive, and does not contaminate the protected object. Existing fire extinguishing devices using heptafluoropropane as a fire extinguishing agent have the problem of a large amount of fire extinguishing agent remaining in the fire extinguishing device after spraying. As a result, the actual fire extinguishing capacity is less than the theoretically calculated fire extinguishing capacity, resulting in a large waste of fire extinguishing agents. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems existing in the prior art and to provide an internally stored pressure type heptafluoropropane fire extinguishing device.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: an internal pressure storage type heptafluoropropane fire extinguishing device, comprising a support shell, a spring is provided at the bottom of the support shell, a fire extinguishing tank is provided on the spring, a sliding rod is provided on the side wall of the fire extinguishing tank, the sliding rod is slidably connected to the support shell, a metal guide block is provided on the sliding rod, a detection box is provided on the side wall of the support shell, the metal guide block is slidably connected to the detection box, a control box is provided in the detection box, a gravity detection platform for alarm is provided below the control box, an alarm circuit is provided on the gravity detection platform, a conductive slot is provided on the gravity detection platform, and the conductive slot is used in conjunction with the metal guide block.

[0005] Preferably, the alarm circuit includes a power supply, an alarm, and a conductive sheet. The power supply and the alarm conductive sheet are connected by wires. The conductive sheets are arranged on both sides of the conductive slot. The power supply is electrically connected to the controller.

[0006] Preferably, nitrogen and heptafluoropropane are provided in the fire extinguisher body, the nitrogen is located above the heptafluoropropane, and a guide platform is provided at the bottom of the fire extinguisher body.

[0007] Preferably, an electric push rod is provided on the top of the fire extinguisher body, the electric push rod is electrically connected to the control box, and a pressure plate is provided on the electric push rod, and the pressure plate is arranged above the nitrogen.

[0008] Preferably, a siphon tube is provided in the fire extinguishing tank, a pressure relief diaphragm is provided on the top of the siphon tube, and the bottom of the siphon tube faces the right side of the guide platform.

[0009] Preferably, reinforcing ribs are provided inside the tank wall of the fire extinguishing tank.

[0010] Beneficial effects of the utility model:

[0011] When the utility model is in use, heptafluoropropane is sprayed out under the action of nitrogen, the weight of the fire extinguishing tank will be reduced, the spring releases its elasticity, and the fire extinguishing tank is slowly raised, and the fire extinguishing tank drives the sliding rod and the metal guide block to rise. After the heptafluoropropane is sprayed out under the action of nitrogen but the alarm does not sound, it means that there is still heptafluoropropane remaining in the fire extinguishing tank. At this time, the control box controls the electric push rod to push the pressure plate to move downward, heptafluoropropane continues to be sprayed out, and the fire extinguishing tank continues to rise slowly. When the metal guide block rises to a certain height, the metal guide block is inserted into the conductive groove and contacts the conductive sheet. At this time, a path is formed in the alarm circuit, and the alarm sounds, reminding the user that the heptafluoropropane is completely sprayed out, and there is no waste of heptafluoropropane. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0014] Figure 2 It is an enlarged schematic diagram of point A of the present utility model.

[0015] Figure annotation:

[0016] 1- Fire extinguisher tank 2- Support shell 3- Guide platform 4- Spring 5- HFC-227ea 6- Slide rod 7- Metal guide block 8- Gravity detection table 9- Detection box 10- Control box 11- Nitrogen 12- Siphon 13- Pressure relief diaphragm 14- Electric push rod 15- Pressure plate 16- Power supply 17- Alarm 18- Conductive sheet 19- Conductive slot. DETAILED DESCRIPTION

[0017] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0019] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0020] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0021] Reference Figure 1 A preferred embodiment of the present invention is an internally pressurized HFC-227ea fire extinguishing device, comprising a support shell 2, a spring 4 disposed at the bottom of the support shell 2, a fire extinguishing can 1 disposed on the spring 4, a slide bar 6 disposed on the side wall of the fire extinguishing can 1, the slide bar 6 being slidably connected to the support shell 2, a metal guide block 7 disposed on the slide bar 6, a detection box 9 disposed on the side wall of the support shell 2, the metal guide block 7 being slidably connected to the detection box 9, a control box 10 disposed within the detection box 9, a gravity detection platform 8 for alarming disposed below the control box 10, an alarm circuit disposed on the gravity detection platform 8, a conductive slot 19 disposed on the gravity detection platform 8, the conductive slot 19 cooperating with the metal guide block 7. The alarm circuit comprises a power supply 16, an alarm 17, and a conductive sheet 18, all of which are connected by wires. The conductive sheets 18 are disposed on both sides of the conductive slot 19, and the power supply 16 is electrically connected to the control box 10. An electric push rod 14 is provided on the top of the fire extinguishing tank 1 , and the electric push rod 14 is electrically connected to the control box 10 . A pressure plate 15 is provided on the electric push rod 14 , and the pressure plate 15 is arranged above the nitrogen 11 .

[0022] Specifically, a fire extinguisher tank 1 of a certain specification is placed in the support shell 2. Due to the effect of weight, the fire extinguisher tank 1 compresses the spring 4 at the bottom of the support shell 2. When in use, the height to which the fire extinguisher tank 1 rises under the action of the spring 4 after all the heptafluoropropane 5 is discharged can be calculated according to the specifications of the fire extinguisher tank 1. When in use, as the heptafluoropropane 5 is ejected, the weight of the fire extinguisher tank 1 is reduced, the spring 4 releases its elasticity, and the fire extinguisher tank 1 is slowly raised. The fire extinguisher tank 1 drives the slide rod 6 and the metal guide block 7 to rise. When the metal guide block 7 rises to a certain height, the metal guide block 7 is inserted into the conductive groove 19 and contacts the conductive sheet 18. At this time, the alarm circuit is connected, and the alarm 17 sounds, reminding the user that the heptafluoropropane 5 has been completely ejected.

[0023] Furthermore, when the fire extinguisher 1 is in use, the heptafluoropropane 5 is sprayed out under the action of the nitrogen 11. After the spraying of the heptafluoropropane 5 under the action of the nitrogen 11 is completed but the alarm 17 does not sound, it means that there is still heptafluoropropane 5 remaining in the fire extinguisher 1. At this time, the control box 10 controls the electric push rod 14 to push the pressure plate 15 to move downward until all the heptafluoropropane 5 is sprayed out and the alarm 17 sounds. At this time, all the heptafluoropropane 5 is sprayed out, and there is no waste of heptafluoropropane 5.

[0024] In this embodiment, nitrogen 11 and heptafluoropropane 5 are placed within the fire extinguisher tank 1. The nitrogen 11 is positioned above the heptafluoropropane 5. A guide platform 3 is provided at the bottom of the fire extinguisher tank 1. A siphon 12 is provided within the fire extinguisher tank 1, and a pressure relief diaphragm 13 is located at the top of the siphon 12. When the pressure within the fire extinguisher tank 1 exceeds the preset pressure of the pressure relief diaphragm 13, the pressure relief diaphragm 13 exceeds the pressure limit and opens, allowing further nitrogen 11 to squeeze the heptafluoropropane 5 out of the siphon 12. The bottom of the siphon 12 faces the right side of the guide platform 3, facilitating the siphon 12 to eject the heptafluoropropane 5 from the bottom of the fire extinguisher tank 1.

[0025] In this embodiment, reinforcing ribs are provided in the tank wall of the fire extinguishing tank 1. The provision of the reinforcing ribs can enhance the strength of the fire extinguishing tank 1 and improve the pressure resistance of the fire extinguishing tank 1, thereby improving safety.

[0026] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0027] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. An internal pressure stored heptafluoropropane fire extinguishing device, characterized by: The invention comprises a support shell (2), a spring (4) is provided at the bottom of the support shell (2), a fire extinguishing tank (1) is provided on the spring (4), a slide rod (6) is provided on the side wall of the fire extinguishing tank (1), the slide rod (6) is slidably connected to the support shell (2), a metal guide block (7) is provided on the slide rod (6), a detection box (9) is provided on the side wall of the support shell (2), the metal guide block (7) is slidably connected to the detection box (9), a control box (10) is provided in the detection box (9), a gravity detection platform (8) for alarm is provided below the control box (10), an alarm circuit is provided on the gravity detection platform (8), a conductive slot (19) is provided on the gravity detection platform (8), and the conductive slot (19) is used in conjunction with the metal guide block (7).

2. The internal pressure stored heptafluoropropane fire extinguishing device according to claim 1, characterized in that: The alarm circuit comprises a power supply (16), an alarm (17), and a conductive sheet (18); the power supply, the alarm (17), and the conductive sheet (18) are all connected via wires; the conductive sheet (18) is arranged on both sides of the conductive slot (19); and the power supply (16) is electrically connected to the control box (10).

3. The internal pressure stored heptafluoropropane fire extinguishing device according to claim 1, characterized in that: Nitrogen (11) and heptafluoropropane (5) are arranged in the fire extinguishing tank (1), the nitrogen (11) is located above the heptafluoropropane (5), and a guide platform (3) is arranged at the bottom of the fire extinguishing tank (1).

4. The internal pressure stored heptafluoropropane fire extinguishing device according to claim 3, characterized in that: An electric push rod (14) is provided on the top of the fire extinguishing tank (1), and the electric push rod (14) is electrically connected to the control box (10). A pressure plate (15) is provided on the electric push rod (14), and the pressure plate (15) is arranged above the nitrogen (11).

5. The internal pressure stored heptafluoropropane fire extinguishing device according to claim 3, characterized in that: A siphon tube (12) is provided in the fire extinguishing tank (1), a pressure relief diaphragm (13) is provided on the top of the siphon tube (12), and the bottom of the siphon tube (12) faces the right side of the guide platform (3).

6. The internal pressure stored heptafluoropropane fire extinguishing device according to claim 1, characterized in that: Reinforcing ribs are provided in the tank wall of the fire extinguishing tank (1).

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