CN219847933U - Fire tube type fire extinguishing device - Google Patents

Abstract

The utility model discloses a fire tube type fire extinguishing device. The fire detection tube type fire extinguishing device comprises a shell, wherein a medicament cavity, a gas cavity and a first piston cavity are arranged in the shell, a gas flow passage is arranged between the gas cavity and the medicament cavity in a communicating mode, the gas flow passage is communicated with the first piston cavity, a fire detection tube is arranged in the first piston cavity in a communicating mode, sealing gas with preset air pressure is arranged in the first piston cavity and the fire detection tube, a first piston is arranged in the first piston cavity in a sliding mode in an airtight mode, and under the effect of the sealing gas, the first piston can be inserted into the gas flow passage in a sealing mode and cuts off the gas flow passage. Through with sealed grafting of first piston in gas runner, cut off gas runner, separate gas chamber and medicament chamber for power gas can be kept in the gas intracavity by better isolation, compares in prior art other fire tube formula starting drive have better leak protection effect, can avoid the mistake to start the phenomenon, makes this fire tube formula extinguishing device have longer shelf life and save quality.

Description

Fire tube type fire extinguishing device

Technical Field

The utility model relates to the technical field of fire extinguishing devices, in particular to a fire detection tube type fire extinguishing device.

Background

The fire detection pipe is a starting component with an automatic triggering function, and most of the existing fire detection pipes are installed in a fire extinguishing device and a fire extinguishing system and can automatically trigger when a fire occurs, so that the fire extinguishing device or the fire extinguishing system is automatically started to extinguish the fire.

The Chinese patent with application number 201420077028.0 discloses a fire extinguishing system starting device based on fire detection pipe detection, wherein the fire detection pipe is also adopted to detect and automatically trigger fire. However, the fire extinguishing device provided with the fire extinguishing system starting device often has the conditions of leakage and the like, so that the fire extinguishing device is started by mistake or has short storage life, and the service life and the use feeling of the fire extinguishing device are affected.

Based on the foregoing, there is a need for a fire tube extinguishing device that can solve the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to provide a fire tube type fire extinguishing device which can avoid leakage or false start and has a longer storage life.

To achieve the purpose, the utility model adopts the following technical scheme:

fire tube extinguishing device includes:

a housing, wherein a medicine cavity, a gas cavity and a first piston cavity are arranged in the housing, a gas flow passage is communicated between the gas cavity and the medicine cavity, and the gas flow passage is communicated with the first piston cavity;

the first piston is arranged in the first piston cavity in a sliding way in an airtight way, a fire detection pipe is arranged in the first piston cavity in a communicating way, sealing gas with preset air pressure is arranged in the first piston cavity and the fire detection pipe, and under the action of the sealing gas, the first piston can be inserted into the gas flow passage in a sealing way and cut off the gas flow passage.

Optionally, the gas flow channel includes a first flow channel and a second flow channel, one end of the first flow channel is communicated with the gas cavity, the other end of the first flow channel is communicated with the first piston cavity, the second flow channel is communicated with the middle part of the first flow channel, and the second flow channel is communicated with the medicament cavity; the first piston has a first sealing portion which can be inserted into the first flow passage in a sealing manner along an axial direction of the first flow passage and which separates the first flow passage from the second flow passage.

Optionally, the second flow channel divides the first flow channel into a first section and a second section, the first sealing part penetrates through the second section and the second flow channel and is inserted into the first section, the first sealing part is provided with a first sealing ring, and the first sealing ring can be abutted between an outer wall surface of the first sealing part and an inner wall surface of the first section.

Optionally, the inner wall surface of the first section includes a tapered sealing surface, and the first sealing ring may abut against the tapered sealing surface under the action of the sealing gas.

Optionally, a third sealing ring is sandwiched between the side wall surface of the first piston and the cavity wall surface of the first piston cavity.

Optionally, the first sealing portion is further provided with a second sealing ring, and the second sealing ring can be abutted between an outer wall surface of the first sealing portion and an inner wall surface of the second section.

Optionally, a second piston cavity is disposed in the housing, the second piston cavity is communicated with the gas flow channel, a second piston is slidably disposed in the second piston cavity in an airtight manner, the sealing gas is disposed in the second piston cavity, and under the action of the sealing gas, the second piston can be inserted into the gas flow channel in a sealing manner and cut off the gas flow channel.

Optionally, the first piston cavity and the second piston cavity are communicated, and the sealing gas in the second piston cavity can be discharged out of the fire tube type fire extinguishing device through the first piston cavity and the fire tube.

Optionally, a first air pressure sensor is disposed in the gas cavity.

Optionally, the fire detecting tube is provided with a second air pressure sensor in a communicating manner.

The fire detection tube type fire extinguishing device provided by the utility model has the beneficial effects that: through setting up the fire detection pipe, be linked together with fire detection pipe and first piston chamber to set up the sealing gas that has the presupposes air pressure in fire detection pipe and first piston intracavity, through sealing gas, promote the sealed grafting of first piston in the first piston chamber in the gas runner and cut off gas runner, thereby separate gas chamber and medicament chamber, make power gas keep in gas intracavity by better keep apart, compare in prior art other fire detection pipe formula starting drive have better leak protection effect, can avoid the mistake to start the phenomenon, make this fire detection pipe formula extinguishing device have longer shelf life and save quality. And after the fire condition leads to the fire detection pipe to break, the sealed gas can in time discharge first piston chamber, and first piston can slide fast under the effect of power gas, and the gas flow channel switches on again to make to preserve sufficient power gas and can get into the medicament chamber through the gas flow channel fast, have better response speed and injection dynamics, promote extinguishing device's use impression.

Drawings

FIG. 1 is a first vertical cross-sectional schematic view of a fire tube extinguishing apparatus of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is a second vertical cross-sectional schematic of a fire tube extinguishing apparatus of the present utility model;

FIG. 4 is an enlarged partial schematic view at B in FIG. 3;

FIG. 5 is a third vertical cross-sectional schematic of a fire tube extinguishing apparatus of the present utility model;

FIG. 6 is an enlarged partial schematic view at C in FIG. 5;

FIG. 7 is a fourth vertical cross-sectional schematic of a fire tube extinguishing apparatus of the present utility model;

FIG. 8 is a partially enlarged schematic illustration of FIG. 7 at D;

FIG. 9 is a fifth vertical cross-sectional schematic of a fire tube extinguishing apparatus of the present utility model;

fig. 10 is a partially enlarged schematic view at E in fig. 9.

In the figure:

1. a housing; 11. an inner cylinder; 111. a gas chamber; 12. an outer cylinder; 121. a medicament chamber; 13. a top cover; 131. a high pressure flow path; 1311. a first flow passage; 13111. a first section; 13112. a second section; 1312. a second flow passage; 132. a low pressure flow path; 133. a first piston chamber; 134. a second piston chamber; 14. a fire detection tube; 15. a connection channel;

2. a first piston; 21. a first sealing part; 22. a first seal ring; 23. a second seal ring; 24. a third seal ring;

3. a second piston;

4. a pressure reducing and stabilizing valve;

101. a second air pressure sensor; 102. a first air pressure sensor.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The fire tube type fire extinguishing apparatus provided by the present utility model is described below with reference to fig. 1 to 10.

As shown in fig. 1 to 10, the fire tube extinguishing device comprises a shell 1, wherein the shell 1 is of a sleeve structure and comprises an outer cylinder 12 and an inner cylinder 11. The inner side of the inner cylinder 11 is provided with a gas cavity 111, and the gas cavity 111 is provided with power gas for providing power for the operation of the fire tube type fire extinguishing device. Between the outer cylinder 12 and the inner cylinder 11 is a medicament cavity 121, a piston is slidably arranged in the medicament cavity 121, and fire extinguishing agent is arranged. The gas chamber 111 and the medicament chamber 121 are connected through a gas flow passage, and power gas can enter the medicament chamber 121 through the gas flow passage to push the piston to move, so that the fire extinguishing agent is extruded out of the medicament chamber 121. The medicine cavity 121 is provided with a spray pipe, and when the piston slides under the drive of the power gas, the fire extinguishing agent is extruded and sprayed out along the spray pipe, so that the effect of spraying the fire extinguishing agent is achieved.

The housing 1 further comprises a top cover 13, wherein the top cover 13 is arranged at one end of the fire tube type fire extinguishing device in a sealing manner and is used for sealing the gas cavity 111 and the medicament cavity 121. Referring to fig. 2 and 8, a first piston chamber 133 is provided in the top cover 13, and the first piston chamber 133 communicates with the gas flow passage. The first piston 2 is provided in the first piston chamber 133, and the first piston 2 is hermetically slidable along the inner wall surface of the first piston chamber 133. The first piston 2 divides the first piston chamber 133 into two parts, one part is directly communicated with the gas flow passage, and the other part is provided with sealing gas with preset gas pressure. The first piston 2 has a first seal portion 21, and the first seal portion 21 is inserted into the gas flow passage by the gas pressure of the seal gas to seal and shut off the gas flow passage, so that the gas chamber 111 and the medicine chamber 121 are in a state of not communicating with each other.

The top cover 13 is also provided with a fire detection tube 14, the top of the first piston cavity 133 is provided with an opening, the fire detection tube 14 can be inserted and installed in the opening and is communicated with the first piston cavity 133, and the sealing gas is arranged inside the fire detection tube 14. The fire detection tube 14 has the functions of breaking and leaking at high temperature, when fire occurs, the fire detection tube 14 breaks, sealing gas in the first piston cavity 133 leaks through the fire detection tube 14, so that the air pressure at two sides of the first piston 2 changes, the sealing gas before the fire detection tube 14 breaks pushes the first piston 2 to be in sealing connection with a gas flow passage, and power gas after the fire detection tube 14 breaks pushes the first piston 2 to be separated from the gas flow passage, so that the first piston 2 is not in sealing connection with the gas flow passage any more, and the gas cavity 111 is communicated with the medicament cavity 121. At this time, the power gas in the gas chamber 111 can flow into the medicine chamber 121 through the gas flow passage to push the piston to extrude the fire extinguishing agent, thereby controlling and extinguishing the fire.

Through setting up the fire detection pipe 14, be linked together fire detection pipe 14 and first piston chamber 133 to set up the sealing gas that has the atmospheric pressure of predetermineeing in fire detection pipe 14 and first piston chamber 133, through sealing gas, promote the sealed grafting of first piston 2 in the first piston chamber 133 in the gas runner and cut off the gas runner, thereby separate gas chamber 111 and medicament chamber 121, make power gas can be kept in gas chamber 111 by better keep apart, compare other fire detection pipe formula starting drive in prior art and have better leak protection effect, can avoid the mistake to start up the phenomenon, make this fire detection pipe formula extinguishing device have longer shelf life and save quality. And, after the condition of a fire leads to the spy firetube 14 to break, sealed gas can in time discharge first piston cavity 133, and first piston 2 can slide fast under the effect of power gas, and the gas flow path switches on again to make preserve sufficient power gas and can get into medicament chamber 121 through the gas flow path fast, have better response speed and injection dynamics, promote the use impression of spy firetube extinguishing device.

Referring to fig. 2, in the present embodiment, the gas flow passage includes a first flow passage 1311 and a second flow passage 1312 communicating in an intersecting posture, and the first piston 2 can be sealingly inserted into the first flow passage 1311 such that the first flow passage 1311 and the second flow passage 1312 become isolated from each other from the communicating state. Specifically, the first piston chamber 133 is located above the outlet of the gas chamber 111, one end of the first flow channel 1311 is connected to the gas chamber 111, the other end is connected to the first piston chamber 133, and the second flow channel 1312 is connected to the middle of the first flow channel 1311. The first piston 2 is provided with a first sealing part 21, the first sealing part 21 is in sealing connection with the first flow channel 1311 along the axial direction of the first flow channel 1311, and the first flow channel 1311 and the second flow channel 1312 can be isolated by sealing and covering a connecting port of the second flow channel 1312 and the first flow channel 1311 or blocking the first flow channel 1311, so that the leakage of power gas through a gas flow channel or the false start of a fire tube type fire extinguishing device is avoided.

More specifically, the first flow channel 1311 is divided into a first section 13111 and a second section 13112 bounded by the intersection of the second flow channel 1312 and the first flow channel 1311. The first section 13111 communicates directly with the gas chamber 111, the second section 13112 communicates directly with the first piston chamber 133, and the first seal 21 is inserted into the first section 13111 through the second section 13112 and the second flow passage 1312. The first sealing portion 21 is provided with a first sealing groove, the first sealing groove is internally provided with a first sealing ring 22, and under the action of sealing gas, the first sealing ring 22 can be abutted between the outer wall surface of the first sealing portion 21 and the inner wall surface of the first section 13111, so that driving gas cannot enter the second flow channel 1312 through the first section 13111, and an effect of cutting off the first flow channel 1311 is achieved.

Preferably, in the present embodiment, the inner wall surface of the first segment 13111 includes a conical sealing surface, and under the effect of the sealing gas, the first sealing ring 22 can be abutted against the conical sealing surface, and generate a larger pressure with the conical sealing surface, so as to ensure the blocking effect of the first sealing ring 22, and further prevent the leakage of the power gas through the gas flow passage.

With continued reference to fig. 2, the first sealing portion 21 is provided with a second sealing groove, and a second sealing ring 23 is provided in the second sealing groove; the side wall of the first piston 2 is provided with a third sealing groove, and a third sealing ring 24 is arranged in the third sealing groove. The third seal ring 24 is interposed between the side wall surface of the first piston 2 and the chamber wall surface of the first piston chamber 133, and the second seal ring 23 can abut between the outer wall surface of the first seal portion 21 and the inner wall surface of the second segment 13112, so that the second flow passage 1312 is isolated from the first piston chamber 133. By providing the second seal ring 23 and the third seal ring 24, leakage of the seal gas through the second section 13112 and the second flow passage 1312 can be prevented, so that the pressure of the seal gas is reduced, and the first piston 2 is pushed by the power gas, thereby causing a false start phenomenon.

Meanwhile, as the second sealing ring 23 is arranged, the power gas can only exert pressure on the first sealing part 21, so that the pressure of the sealing gas can be greatly reduced, and the manufacturing difficulty and cost of the fire detection tube type fire extinguishing device are reduced. In the present embodiment, the pressure of the sealing gas against the first piston 2 is 16bar, and the pressure of the motive gas against the first sealing portion 21 is 80bar, and the motive gas with a larger pressure can be sealed by the sealing gas with a smaller pressure only by reasonably controlling the size of the stress area. It will be appreciated that if the second seal 23 is not provided, then in the manufacture and assembly of the fire tube extinguishing apparatus, and particularly when the first seal 22 passes through the intersection of the second flow passage 1312 and the first flow passage 1311, the motive gas may enter the first piston chamber 133 directly through the first and second sections 13111, 13112, resulting in a leak condition.

Optionally, in this embodiment, as shown in fig. 3 and 4, the top cover 13 further includes a pressure reducing and stabilizing valve 4. The pressure-reducing steady flow valve 4 is communicated with the gas flow passage, and the power gas can flow out of the pressure-reducing steady flow valve 4 at a preset air pressure value after entering the pressure-reducing steady flow valve 4 through the gas flow passage, and the piston can squeeze the extinguishing agent at a preset speed after entering the gas cavity 111, so that the use feeling of the fire-detecting tube type extinguishing device is improved.

Preferably, in the present embodiment, referring to fig. 2 to 4, the pressure-reducing and flow-stabilizing valve 4 is used as a boundary, the gas flow channel is divided into a high-pressure flow channel 131 and a low-pressure flow channel 132, the high-pressure flow channel 131 includes the first flow channel 1311 and the second flow channel 1312, and the low-pressure flow channel 132 is communicated between the pressure-reducing and flow-stabilizing valve 4 and the medicament cavity 121. The top cover 13 is provided with a first piston chamber 133 and a second piston chamber 134, the first piston chamber 133 is communicated with the high-pressure flow passage 131, and the second piston chamber 134 is communicated with the low-pressure flow passage 132. Similar to the first piston chamber 133, the second piston 3 and the sealing gas are also provided in the second piston chamber 134, and the second piston 3 is capable of hermetically sliding within the second piston chamber 134. The second piston 3 has a second sealing portion similar to the first sealing portion 21 described above, which is inserted into the low pressure flow passage 132 by the sealing gas and blocks the low pressure flow passage 132. Through setting up first piston 2 and second piston 3 for high pressure runner 131 and low pressure runner 132 are truncated respectively, can reach better leak protection effect, and when the first sealing portion 21 of first piston 2 leaks, even power gas gets into decompression stationary flow valve 4 through high pressure runner 131, can also be blocked in low pressure runner 132 for this fire tube formula extinguishing device possesses better mistake start-up's function. The specific structures of the second piston 3 and the low pressure flow passage 132 are similar to those of the first piston 2, the first flow passage 1311 and the second flow passage 1312 described above, and will not be described in detail in this embodiment.

Preferably, referring to fig. 5 to 8, in the present embodiment, a connection channel 15 is provided between the first piston chamber 133 and the second piston chamber 134 in a communicating manner, so that when the fire detection tube 14 is broken, the sealing gas in the first piston chamber 133 is discharged through the fire detection tube 14, and the sealing gas in the second piston chamber 134 is discharged through the connection channel 15, the first piston chamber 133 and the fire detection tube 14, so that the first piston 2 and the second piston 3 move synchronously, the high pressure flow channel 131 and the low pressure flow channel 132 are opened, the gas chamber 111 and the medicament chamber 121 are conducted, and the power gas can enter the medicament chamber 121 through the conducted gas channel to push the piston to extrude the fire extinguishing agent. Of course, in some other embodiments, a similar technical effect may be achieved by providing the fire detection tube 14 in the second piston cavity 134 in a communicating manner, which is not particularly limited in the present utility model.

Alternatively, as shown in fig. 7, in the present embodiment, a first air pressure sensor 102 is provided in the air chamber 111 for detecting the air pressure value of the motive air. Based on the detection value of the first air pressure sensor 102, the operator can intuitively know whether the motive air leaks. Similarly, as shown in fig. 9 and 10, the second air pressure sensor 101 may be disposed in communication with the fire detecting tube 14, so as to detect the air pressure value of the sealing gas in the fire detecting tube 14 and the first piston cavity 133, thereby facilitating the operator to confirm whether the sealing gas leaks or not, and further judging whether the power gas leaks or not.

Preferably, in this embodiment, the fire tube extinguishing apparatus is installed on an automobile, where the first air pressure sensor 102 or the second air pressure sensor 101 is connected to a central control computer of the automobile, and when the detection value of the first air pressure sensor 102 or the second air pressure sensor 101 is too low, the central control computer can alarm by means of alarm measures such as sound, light, electricity, etc., so as to prompt drivers and passengers.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Fire tube formula extinguishing device, its characterized in that includes:

the device comprises a shell (1), wherein a medicament cavity (121), a gas cavity (111) and a first piston cavity (133) are arranged in the shell (1), a gas flow passage is communicated between the gas cavity (111) and the medicament cavity (121), and the gas flow passage is communicated with the first piston cavity (133);

the first piston (2), first piston (2) slides with the gas tightness and sets up in first piston chamber (133), first piston chamber (133) intercommunication is provided with fire detection pipe (14), first piston chamber (133) with be provided with the sealing gas of predetermineeing atmospheric pressure in fire detection pipe (14), under the effect of sealing gas, first piston (2) can sealed grafting to in the gas flow channel and with the gas flow channel cuts.

2. The fire tube extinguishing apparatus according to claim 1, wherein the gas flow passage includes a first flow passage (1311) and a second flow passage (1312), one end of the first flow passage (1311) is communicated with the gas chamber (111), the other end of the first flow passage (1311) is communicated with the first piston chamber (133), the second flow passage (1312) is communicated with a middle portion of the first flow passage (1311), and the second flow passage (1312) is communicated with the medicine chamber (121); the first piston (2) has a first sealing part (21), wherein the first sealing part (21) can be inserted into the first flow channel (1311) in a sealing way along the axial direction of the first flow channel (1311) and isolate the first flow channel (1311) from the second flow channel (1312).

3. The fire tube extinguishing apparatus according to claim 2, wherein the second flow passage (1312) divides the first flow passage (1311) into a first section (13111) and a second section (13112), the first sealing portion (21) is inserted into the first section (13111) after passing through the second section (13112) and the second flow passage (1312), and the first sealing portion (21) is provided with a first sealing ring (22), and the first sealing ring (22) can be abutted between an outer wall surface of the first sealing portion (21) and an inner wall surface of the first section (13111).

4. A fire tube extinguishing apparatus according to claim 3, characterized in that the inner wall surface of the first section (13111) comprises a conical sealing surface against which the first sealing ring (22) can abut under the effect of the sealing gas.

5. A fire tube extinguishing apparatus according to claim 3, characterized in that a third sealing ring (24) is interposed between the side wall surface of the first piston (2) and the chamber wall surface of the first piston chamber (133).

6. The fire tube extinguishing apparatus according to claim 5, characterized in that the first sealing portion (21) is further provided with a second sealing ring (23), the second sealing ring (23) being abuttable between an outer wall surface of the first sealing portion (21) and an inner wall surface of the second section (13112).

7. The fire detection tube type fire extinguishing device according to claim 2, wherein a second piston cavity (134) is arranged in the shell (1), the second piston cavity (134) is communicated with the gas flow passage, a second piston (3) is arranged in the second piston cavity (134) in a sliding manner in an airtight manner, the sealing gas is arranged in the second piston cavity (134), and under the action of the sealing gas, the second piston (3) can be inserted into the gas flow passage in a sealing manner and cut off the gas flow passage.

8. The fire tube extinguishing apparatus according to claim 7, characterized in that the first piston chamber (133) and the second piston chamber (134) are arranged in communication, and the sealing gas in the second piston chamber (134) can be discharged out of the fire tube extinguishing apparatus through the first piston chamber (133) and the fire tube (14).

9. A fire tube extinguishing apparatus according to claim 1, characterized in that a first gas pressure sensor (102) is arranged in the gas chamber (111).

10. A fire tube extinguishing apparatus according to claim 1, characterized in that the fire tube (14) is provided with a second air pressure sensor (101) in communication.