CN216571299U

CN216571299U - Water mist fire extinguishing system with energy storage device

Info

Publication number: CN216571299U
Application number: CN202121744266.9U
Authority: CN
Inventors: 丁远龙; 张卫超; 李小帆; 徐才茂; 胡敏渊; 张申
Original assignee: Zhejiang Langsong Intelligent Power Equipment Co ltd
Current assignee: Zhejiang Langsong Intelligent Power Equipment Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-29
Publication date: 2022-05-24
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to the technical field of fire fighting equipment, in particular to a water mist fire extinguishing system with an energy storage device, which comprises a water tank, wherein a fire pump and a pressure stabilizing pump are connected in parallel at the bottom of the water tank through a pipeline, a second one-way valve is arranged at the output end of the pressure stabilizing pump, the first one-way valve and the second one-way valve are connected to a fire extinguishing agent conveying main pipe after being converged through a pipeline, a plurality of fire extinguishing agent conveying branch pipes are connected in parallel on the fire extinguishing agent conveying main pipe, a water mist spray nozzle is arranged on each fire extinguishing agent conveying branch pipe, a third one-way valve is arranged between the second one-way valve and the fire extinguishing agent conveying main pipe, and the energy storage device is arranged on the pipeline between the second one-way valve and the third one-way valve. The water mist fire extinguishing system with the energy storage device can store fire extinguishing agents and energy in the energy storage device to ensure the pressure of a main pipe network, so that the starting and stopping frequency of a pressure stabilizing pump is effectively reduced, and the stability of the system is improved.

Description

Water mist fire extinguishing system with energy storage device

Technical Field

The utility model relates to the technical field of fire-fighting equipment, in particular to a water mist fire extinguishing system with an energy storage device.

Background

The fire threatens the life and property safety of people, and when the fire happens, the life and property safety of people can be ensured to the maximum extent only by putting out or suppressing the development of the fire at the fastest speed. The water mist fire extinguishing is used as a novel efficient, environment-friendly and secondary-damage-free fire extinguishing mode and is applied more and more widely. However, due to uncertainty of fire occurrence, in order to increase the spray response speed after fire occurrence, a pressure stabilizing system is mostly adopted, that is, the main pipeline is filled with water and kept at a certain pressure in a standby state. The pressure stabilizing section of the fire extinguishing system is from a pump unit to the front of each subarea control valve or from the pump unit to a closed spray head, and the pressure stabilizing pressure is generally between 0.5 and 1.2 MPa. Because the compression ratio of water is very low, and the pressure regulating relief valve and the safety valve in the system are all sealed by metal hard seals, the leakage is inevitable. The pressure stabilizing pump is frequently started only by the pressure stabilization of the pipeline cavity under the influence of later-stage soft seal aging leakage and field temperature alternation, the single operation time of the pressure stabilizing pump is short (quick start and quick stop), and the pressure stabilizing pump and the motor which are operated for a long time are easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water mist fire extinguishing system with an energy storage device for solving the technical defects, which can effectively reduce the starting frequency of a pressure stabilizing pump and greatly improve the stability of the system.

The utility model discloses a water mist fire extinguishing system with an energy storage device, which comprises a water tank, wherein the bottom of the water tank is connected with a fire pump and a pressure stabilizing pump in parallel through a pipeline, the output end of the fire pump is provided with a first one-way valve, the output end of the pressure stabilizing pump is provided with a second one-way valve, the first one-way valve and the second one-way valve are connected to the fire extinguishing agent delivery main pipe after being converged by a pipeline, a plurality of fire extinguishing agent delivery branch pipes are connected in parallel on the fire extinguishing agent delivery main pipe, a zone control valve is arranged on each fire extinguishing agent delivery branch pipe, a water mist spray nozzle is arranged on the fire extinguishing agent delivery branch pipe, a third one-way valve is arranged between the second one-way valve and the fire extinguishing agent delivery main pipe, an energy storage device is arranged on a pipeline between the second one-way valve and the third one-way valve, a pressure regulating and relieving valve is connected between the fire extinguishing agent delivery main pipe and the water tank through a pipeline, and a safety valve is connected between the fire extinguishing agent delivery main pipe and the water tank through a pipeline.

A pressure gauge is arranged on the main fire extinguishing agent conveying pipe.

As shown in figure 1, because the existing water mist fire extinguishing system with the pressure stabilizing function stabilizes pressure through a system pipeline cavity, the outlet of a pressure stabilizing pump is connected into a main pipe network after passing through a one-way valve, and when the system pressure drops after leakage occurs to each valve of the system, the pressure stabilizing pump starts water replenishing and pressurization. Because the medium water compression rate is low, the pressure stabilizing pump supplies less water to the main pipeline in the pressure stabilizing range, so that the pressure stabilizing pump is frequently started, and the running time after single start is extremely short. According to the scheme, after the pressure stabilizing pump supplements and pressurizes the fire extinguishing agent in the main pipe network, the interior of the energy storage device is filled with more fire extinguishing agent, and meanwhile, energy is stored, once the main pipe network leaks a small amount of energy, the energy in the energy storage device is released, the fire extinguishing agent in the energy storage device is supplemented to the main pipe network, and the pressure stabilizing pump is started again to supplement the fire extinguishing agent in the main pipe network and the energy storage device until the pressure of the fire extinguishing agent in the energy storage device is released to reach the lower limit, so that the next pressure stabilizing period is started. The scheme can effectively reduce the frequent starting condition of the pressure stabilizing pump and greatly improve the stability of the system.

An energy storage device: including tubulose body and two pistons of setting in the inside of tubulose body, be provided with the end cover respectively at the both ends of tubulose body, connect through two piece at least connecting rods between two end covers, the terminal surface that the piston is close to the end cover is provided with interior cavity, is provided with the spring holder bottom the interior cavity of piston, is provided with the spring holder, is provided with one or more spring between spring holder and end cover, is provided with the sealing ring on the piston, and the sealing ring is used for realizing sealed between piston and the tubulose body, is provided with gas vent and business turn over liquid mouth at the middle part of tubulose body.

In the above scheme, through the piston at tubulose body and both ends, and set up end cover and spring in the piston outside, utilize the spring to provide pressure for the piston. When the fire extinguishing agent is filled into the tubular body between the two pistons to the upper pressure limit, the pistons and the springs are compressed to store certain energy, when the pressure of the fire extinguishing agent in a system pipeline is reduced, the fire extinguishing agent in the tubular body can be supplemented into the system pipeline, and the two pistons move close to each other under the action of the springs, so that the space in the tubular body between the pistons is relatively reduced, and the pressure of the fire extinguishing agent in the system pipeline is kept stable basically. And when the pressure given to the piston by the spring and the pressure of the fire extinguishing agent in the system pipeline are reduced to the lower limit, the pressure stabilizing pump is started again to supplement the fire extinguishing agent to the system pipeline and the interior of the tubular body, the spring is compressed again to store energy, and the process is repeated. The time that the pressure of the fire extinguishing agent in the system pipeline is maintained within the required value range can be effectively prolonged in the process, so that the starting frequency of the pressure stabilizing pump can be reduced, the starting interval time of the pressure stabilizing pump is increased, the starting interval time of the pressure stabilizing pump can be generally prolonged to be more than 5 times of the existing time interval, and the running stability and reliability of equipment are ensured. The concave cavity and the spring seat of the piston are arranged at the bottom of the inner concave cavity, so that occupied spaces of the piston, the spring seat, the spring and the like can be effectively reduced, and the volume of the energy storage device is greatly reduced.

The end covers on two sides are connected with the tubular body through a long connecting rod and a nut, threads are arranged at two ends of the connecting rod, and a flange is designed on one side, close to the piston, of each end cover, so that the purposes of centering the position and increasing the strength of parts are achieved.

Counter bores are formed in the spring seat, the number of the counter bores is the same as that of the springs on the same side, the end portions of the springs are arranged in the counter bores, and when the number of the springs is larger than 1, the counter bores are uniformly distributed on the spring seat by taking the axis of the spring seat as the center; a spring guide sleeve is arranged in the tubular body between the spring seat and the end cover on the same side, and guide holes corresponding to the number and positions of the springs are formed in the spring guide sleeve. A plurality of counter bores are uniformly distributed on the spring seat by taking the axis of the spring seat as the center so as to install springs, and the number of the springs is calculated and matched according to the diameter of the piston and the pressure range. The spring guide sleeve is made of plastic or high polymer materials with low friction coefficient, abrasion to the outer diameter of the spring is reduced, the number of guide holes of the spring guide sleeve and the reference circle of the guide holes are consistent with those of counter bores in the spring seat, and a guide angle which is 10-30 degrees to the axial direction of each guide hole is designed at an opening part of one end, facing the spring seat, of each guide hole.

And the spring guide sleeve is fixedly connected with the end cover at the same side through a bolt.

The center of the end face of the piston, which is in contact with the spring seat, is provided with a conical surface concave structure, the center of the end face of the spring seat, which corresponds to the conical surface concave structure, is provided with a spherical surface convex structure, and the spherical surface convex structure is matched and abutted with the conical surface concave structure. The spring seat and the piston are matched by adopting a spherical surface and a conical surface so as to achieve the purpose of small-angle swing compensation, avoid the influence of the overturning moment generated by the difference of the free length and the rigidity of a single spring on the piston, reduce the load and the friction force of a piston guide ring, and simultaneously avoid the spring distortion and even overturn caused by the circumferential rotation of the piston in the telescopic stroke.

A guide ring is provided on a circumferential surface of the piston. The piston is provided with a guide ring and a sealing ring, the guide ring is made of plastic or high molecular material with low friction coefficient, and the compensation type sealing ring is adopted, namely the piston comprises an elastic compensation element and a contact sealing element.

Of course, the energy storage device may also be a bladder type inflatable energy storage device or a gravity type energy storage device in the prior art.

According to the water mist fire extinguishing system with the energy storage device, the energy storage device arranged in the main pipe network is utilized, fire extinguishing agents and energy can be stored in the energy storage device, and the energy and the fire extinguishing agents can be released to be supplemented to the main pipe network when leakage occurs, so that the pressure of the main pipe network is ensured, the starting and stopping frequency of a pressure stabilizing pump is effectively reduced, and the stability of the system is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art fire suppression system;

FIG. 2 is a schematic view of a fire suppression system of the present invention;

fig. 3 is a schematic cross-sectional view of an energy storage device according to embodiment 3 of the utility model;

fig. 4 is a partial cross-sectional view of an energy storage device according to embodiment 3 of the utility model;

fig. 5 is an exploded view of an energy storage device according to embodiment 3 of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1:

as shown in figure 2, the utility model discloses a water mist fire extinguishing system with an energy storage device, which comprises a water tank h, wherein the bottom of the water tank h is connected with a fire pump a and a pressure stabilizing pump b in parallel through a pipeline, the output end of the fire pump a is provided with a first one-way valve c, the output end of the pressure stabilizing pump b is provided with a second one-way valve d, the first one-way valve c and the second one-way valve d are connected to a main fire extinguishing agent conveying pipe after being converged through a pipeline, the main fire extinguishing agent conveying pipe is connected with a plurality of fire extinguishing agent conveying branch pipes in parallel, each fire extinguishing agent conveying branch pipe is provided with a partition control valve i, the fire extinguishing agent conveying branch pipe is provided with a water mist spray nozzle j, a third one-way valve n is arranged between the second one-way valve d and the main fire extinguishing agent conveying pipe, the pipeline between the second one-way valve d and the third one-way valve n is provided with an energy storage device k, and a pressure relief valve e is connected between the main fire extinguishing agent conveying pipe and the water tank h through a pipeline, a safety valve f is connected between the main fire extinguishing agent conveying pipe and the water tank h through a pipeline.

The fire extinguishing agent delivery main pipe is provided with a pressure gauge g.

The energy storage device k is a leather bag type inflatable energy storage device.

Example 2:

as shown in fig. 2, the present invention discloses a water mist fire extinguishing system having an energy storage device, which is different from embodiment 1 in that: the energy storage device k is a gravity type energy storage device.

Example 3:

as shown in fig. 3, 4 and 5, the utility model discloses a water mist fire extinguishing system with an energy storage device, which is different from the embodiment 1 in that: the energy storage device k: including tubulose body 1 and set up two pistons 2 in tubulose body 1 inside, be provided with end cover 6 respectively at the both ends of tubulose body 1, connect through four connecting rods 13 between two end covers 6, the terminal surface that piston 2 is close to end cover 6 is provided with interior cavity, is provided with spring holder 3 bottom the interior cavity of piston 2, is provided with spring holder 3, is provided with one or more spring 5 between spring holder 3 and end cover 6, is provided with sealing ring 7 on piston 2, and sealing ring 7 is used for realizing the sealed between piston 2 and the tubulose body 1, is provided with gas vent 9 and business turn over liquid mouth 10 at the middle part of tubulose body 1. Of course, the exhaust port 9 needs to be closed with a sealing cover after the exhaust is completed. The end covers 6 on two sides are connected with the tubular body 1 through a long connecting rod 13 and a nut 12, and threads are arranged at two ends of the connecting rod 13.

Counter bores 14 are formed in the spring seat 3, the number of the counter bores 14 is the same as that of the springs 5 on the same side, the end portions of the springs 5 are arranged in the counter bores 14, and when the number of the springs 5 is 3, the counter bores 14 are uniformly distributed on the spring seat 3 by taking the axis of the spring seat 3 as the center; a spring guide sleeve 4 is arranged inside the tubular body 1 between the spring seat 3 and the end cover 6 on the same side, and guide holes 15 corresponding to the number and positions of the springs 5 are formed in the spring guide sleeve 4.

The spring guide sleeve 4 is fixedly connected with the end cover 6 on the same side through a bolt 11.

The center of the end face of the piston 2, which is in contact with the spring seat 3, is provided with a conical surface concave structure, the center of the end face of the spring seat 3, which corresponds to the conical surface concave structure, is provided with a spherical surface convex structure, and the spherical surface convex structure is matched and abutted with the conical surface concave structure.

A guide ring 8 is provided on the circumferential surface of the piston 2.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the utility model is not limited to the disclosed embodiments, but may be embodied or carried out in various forms without departing from the spirit and scope of the utility model.

Claims

1. A water mist fire extinguishing system with an energy storage device is characterized in that: the fire extinguishing agent delivery device comprises a water tank, wherein a fire pump and a pressure stabilizing pump are connected in parallel at the bottom of the water tank through a pipeline, a first one-way valve is arranged at the output end of the fire pump, a second one-way valve is arranged at the output end of the pressure stabilizing pump, the first one-way valve and the second one-way valve are connected to a fire extinguishing agent delivery main pipe after being converged through a pipeline, a plurality of fire extinguishing agent delivery branch pipes are connected in parallel on the fire extinguishing agent delivery main pipe, a partition control valve is arranged on each fire extinguishing agent delivery branch pipe, a fine water mist spray nozzle is arranged on each fire extinguishing agent delivery branch pipe, a third one-way valve is arranged between the second one-way valve and the fire extinguishing agent delivery main pipe, an energy storage device is arranged on a pipeline between the second one-way valve and the third one-way valve, a pressure regulating and releasing valve is connected between the fire extinguishing agent delivery main pipe and the water tank through a pipeline, and a safety valve is connected between the fire extinguishing agent delivery main pipe and the water tank through a pipeline; the energy storage device is characterized in that: the sealing device comprises a tubular body and two pistons arranged inside the tubular body, wherein end covers are respectively arranged at two ends of the tubular body, the two end covers are connected through at least two connecting rods, an inner concave cavity is formed in the end face, close to the end covers, of each piston, a spring seat is arranged at the bottom of the inner concave cavity of each piston, one or more springs are arranged between the spring seats and the end covers, a sealing ring is arranged on the outer circumferential surface of each piston, the sealing ring is used for sealing between the pistons and the tubular body, and an air outlet and a liquid inlet and outlet are formed in the middle of the tubular body.

2. The water mist fire suppression system with energy storage device of claim 1, wherein: a pressure gauge is arranged on the main fire extinguishing agent conveying pipe.

3. A water mist fire suppression system with energy storage means according to claim 1 or 2, wherein: counter bores are formed in the spring seat, the number of the counter bores is the same as that of the springs on the same side, the end portions of the springs are arranged in the counter bores, and when the number of the springs is larger than 1, the counter bores are uniformly distributed on the spring seat by taking the axis of the spring seat as the center; a spring guide sleeve is arranged in the tubular body between the spring seat and the end cover on the same side, and guide holes corresponding to the number and positions of the springs are formed in the spring guide sleeve.

4. A water mist fire suppression system with energy storage means as claimed in claim 3, wherein: and the spring guide sleeve is fixedly connected with the end cover at the same side through a bolt.

5. A water mist fire suppression system with energy storage means as claimed in claim 3, wherein: the center of the end face of the piston, which is in contact with the spring seat, is provided with a conical surface concave structure, the center of the end face of the spring seat, which corresponds to the conical surface concave structure, is provided with a spherical surface convex structure, and the spherical surface convex structure is matched and abutted with the conical surface concave structure.

6. The water mist fire suppression system with energy storage device of claim 5, wherein: a guide ring is provided on a circumferential surface of the piston.