CN219775480U - Pressure balance structure for preventing frequent misoperation in wet fire alarm system - Google Patents
Pressure balance structure for preventing frequent misoperation in wet fire alarm system Download PDFInfo
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- CN219775480U CN219775480U CN202320767470.5U CN202320767470U CN219775480U CN 219775480 U CN219775480 U CN 219775480U CN 202320767470 U CN202320767470 U CN 202320767470U CN 219775480 U CN219775480 U CN 219775480U
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- 230000007257 malfunction Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 35
- 230000000087 stabilizing effect Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 15
- 230000008901 benefit Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a pressure balance structure for preventing frequent misoperation in a wet fire alarm system, which comprises a wet alarm valve, a bypass pipe and a bypass valve, wherein the bypass valve is arranged on the bypass pipe, and two ends of the bypass pipe are respectively connected with a valve front pipeline and a valve rear pipeline of the wet alarm valve. The pressure balance structure overcomes the defects of frequent actions of a pressure switch and frequent starting of a pressure stabilizing pump and a water supply pump in the traditional wet fire alarm system, ensures the reliable and stable operation of the system, and improves the debugging and acceptance qualification rate of the system.
Description
Technical Field
The utility model relates to the technical field of fire safety, in particular to a pressure balance structure for preventing frequent misoperation in a wet fire alarm system.
Background
The wet fire alarm system is a closed system with pressurized water filled in the pipeline for starting the system in the quasi-working state, and consists of a closed sprinkler, a water flow indicator, a wet alarm valve, a corresponding pipeline, a water supply facility and the like. When fire disaster occurs in a protection area, the temperature rises to enable the glass ball of the closed sprinkler to burst, so that the sprinkler is opened to spray water, at the moment, the lateral pressure of a wet alarm valve system is reduced, the water supply pressure is larger than the lateral pressure of the system to generate pressure difference, the wet alarm valve is opened, one path of pressure water flows to the sprinkler to carry out sprinkling fire extinguishment, and meanwhile, a water flow indicator reports the fire area; the other path of pressure water flows to the hydraulic alarm bell through the delayer to alarm, and the alarm valve group or the pressure switch of the pressure stabilizing pump outputs a signal for starting the water supply pump, so that the system is started. After the system is started, the water supply pump supplies water to the spray head, and the spray head uniformly sprays water according to the water spray intensity not lower than the design specification, so as to extinguish fire. The wet alarm valve in the system is a one-way valve which only allows water to flow into the water spraying system in one direction and alarms under the specified flow, and the wet alarm valve has the function of switching on or switching off the alarm water flow, and the alarm water flow drives the hydraulic alarm bell and the pressure switch to alarm after the nozzle acts so as to prevent water from flowing backwards.
In general, the operation of a water supply pump in a fire fighting system is classified into manual and automatic, and it is prescribed that a valve to be opened in a normal state must be normally opened, and the water supply pump and a shower pump are all adjusted to an automatic state. However, at present, most of water supply pumps and spray pumps in fire protection systems are not regulated to be in an automatic state, and are controlled in a manner of taking turns on duty for 24 hours in a fire control room under the condition of standard permission. However, most fire protection systems have large pipelines, many spray head points and inevitably have loss of system pressure, for example, a protection area can be provided with a plurality of sets of wet fire protection alarm systems, each set of wet fire protection alarm system can be connected with hundreds of spray points, so that a pressure switch frequently acts, a pressure stabilizing pump and a water supply pump are frequently started, and the pressure stabilizing pump and the water supply pump are also one of reasons that the water supply pump and the spray pump are not set to be in an automatic state generally. The conditions of frequent alarm and action of the wet alarm valve hydraulic alarm bell, the delayer, the pressure switch and the pressure stabilizing pump are caused, and the wet fire alarm system is also a common deviation problem.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pressure balance structure for preventing frequent misoperation in a wet fire alarm system, which overcomes the defects of frequent actions of a pressure switch and frequent starting of a pressure stabilizing pump and a water supply pump in the traditional wet fire alarm system, ensures the reliable and stable operation of the system and improves the debugging and acceptance qualification rate of the system.
In order to solve the technical problems, the pressure balance structure for preventing frequent misoperation in the wet fire alarm system comprises a wet alarm valve, a bypass pipe and a bypass valve, wherein the bypass valve is arranged on the bypass pipe, and two ends of the bypass pipe are respectively connected with a pipeline in front of the wet alarm valve and a pipeline behind the wet alarm valve.
Further, the pipeline before the valve and the pipeline after the valve of the wet alarm valve are respectively provided with holes through the hole digger, and the two ends of the bypass pipe are connected with the holes through welding.
Further, the bypass pipe comprises a longitudinal pipe and two transverse pipes, two ends of the longitudinal pipe are respectively connected with one ends of the two transverse pipes through right-angle elbows, and the other ends of the two transverse pipes are connected with a valve front pipeline and a valve rear pipeline of the wet alarm valve.
Further, the bypass valve is a ball valve.
The pressure balance structure for preventing frequent misoperation in the wet fire alarm system adopts the technical scheme that the pressure balance structure comprises the wet alarm valve, a bypass pipe and a bypass valve, wherein the bypass valve is arranged on the bypass pipe, and two ends of the bypass pipe are respectively connected with a valve front pipeline and a valve rear pipeline of the wet alarm valve. The pressure balance structure overcomes the defects of frequent actions of a pressure switch and frequent starting of a pressure stabilizing pump and a water supply pump in the traditional wet fire alarm system, ensures the reliable and stable operation of the system, and improves the debugging and acceptance qualification rate of the system.
Drawings
The utility model is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is a schematic diagram of a pressure balancing structure for preventing frequent malfunction in a wet fire alarm system according to the present utility model.
Detailed Description
As shown in fig. 1, the pressure balancing structure for preventing frequent malfunction in a wet fire alarm system of the present utility model comprises a wet alarm valve 1, a bypass pipe 2 and a bypass valve 3, wherein the bypass valve 3 is disposed on the bypass pipe 2, and two ends of the bypass pipe 2 are respectively connected with a front valve pipeline 11 and a rear valve pipeline 12 of the wet alarm valve 1.
Preferably, the front valve pipeline 11 and the rear valve pipeline 12 of the wet alarm valve 1 are respectively provided with holes through a hole digger, and two ends of the bypass pipe 2 are connected with the holes through welding.
Preferably, the bypass pipe 2 comprises a longitudinal pipe 21 and two transverse pipes 22, two ends of the longitudinal pipe 21 are respectively connected with one ends of the two transverse pipes 22 by adopting a right-angle elbow 23, and the other ends of the two transverse pipes 22 are connected with the valve front pipeline 11 and the valve rear pipeline 12 of the wet alarm valve 1.
Preferably, the bypass valve 3 is a ball valve. The ball valve can reach a fully open or fully closed state to increase the range of differential pressure regulation.
The pressure balance structure is characterized in that a bypass pipe is arranged on a valve front pipeline and a valve rear pipeline of the wet type alarm valve, the bypass pipe is provided with a bypass valve, and the pressure difference between the valve front pipeline and the valve rear pipeline of the wet type alarm valve is regulated through the bypass pipe to be used for matching the pressure loss of the system. Because the pipeline distance of the wet fire alarm system is long and the spray header points are more, the pressure of the outlet pipe network is inevitably lost, for example, if the balance pipe of the original upper and lower cavities of the wet alarm valve is not enough for water replenishment, the fluctuation of water flow is large, and the water in the delay device is not enough for emptying within 14 seconds, so that the hydraulic alarm bell alarms, the pressure switch acts, the fire-fighting spray pump is directly started and the like; in order to avoid unnecessary economic loss and ensure the reliability of the action, the bypass pipe is added to balance the pipe network pressure at the front end and the rear end of the wet type alarm valve, so that the double-insurance effect of water supplementing measures during the pipe network pressure loss is achieved. The bypass valve needs to be normally opened at ordinary times, and when the pipe network is maintained or the spray header needs to be replaced, the front end valve and the rear end valve of the wet type alarm valve are closed, the bypass valve is closed, and the pipe network pressure water at the rear end of the wet type alarm valve is discharged to maintain the pipe network and replace the spray header.
The pressure balance structure effectively solves the problems of frequent alarm and action of the pressure switch, the hydraulic alarm bell and the fire-fighting stabilized pump caused by unavoidable normal loss of the wet fire-fighting alarm valve system, and further solves the problem of frequent misoperation of the water supply pump and the spray pump, thereby avoiding unnecessary economic loss and finally achieving the aim of really solving the problem of frequent misoperation of the wet fire-fighting alarm system.
The pressure balance structure fully considers the safety, operability and economy. The system solves a series of frequent misoperation of the wet fire alarm system in the most economical way, achieves the maximum benefit, and completely meets the requirements of fire control standards (namely, valves which are required to be opened in a normal state are all normally opened, and a water supply pump and a spray pump are all set to be in an automatic state). Compared with other construction modes for solving the problem, the method has the advantages of least investment, convenient operation, safety, reliability and strong applicability. And the system can also guide the system installation and debugging work of similar principles, such as a rain system, a pre-action system, a circulation system, a light water foam system and the like.
Claims (4)
1. A pressure balance structure for preventing frequent malfunction in wet-type fire alarm system, includes wet-type alarm valve, its characterized in that: the wet type alarm valve further comprises a bypass pipe and a bypass valve, wherein the bypass valve is arranged on the bypass pipe, and two ends of the bypass pipe are respectively connected with a valve front pipeline and a valve rear pipeline of the wet type alarm valve.
2. The pressure balancing structure for preventing frequent malfunction in a wet fire alarm system as defined in claim 1, wherein: the pipeline before the valve and the pipeline behind the valve of the wet alarm valve are respectively provided with holes through the hole digger, and the two ends of the bypass pipe are connected with the holes through welding.
3. The pressure balancing structure for preventing frequent malfunction in a wet fire alarm system as defined in claim 1, wherein: the bypass pipe comprises a longitudinal pipe and two transverse pipes, wherein two ends of the longitudinal pipe are respectively connected with one ends of the two transverse pipes through a right-angle elbow, and the other ends of the two transverse pipes are connected with a valve front pipeline and a valve rear pipeline of the wet alarm valve.
4. The pressure balancing structure for preventing frequent malfunction in a wet fire alarm system as defined in claim 1, wherein: the bypass valve is a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767470.5U CN219775480U (en) | 2023-04-10 | 2023-04-10 | Pressure balance structure for preventing frequent misoperation in wet fire alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320767470.5U CN219775480U (en) | 2023-04-10 | 2023-04-10 | Pressure balance structure for preventing frequent misoperation in wet fire alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219775480U true CN219775480U (en) | 2023-09-29 |
Family
ID=88107985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320767470.5U Active CN219775480U (en) | 2023-04-10 | 2023-04-10 | Pressure balance structure for preventing frequent misoperation in wet fire alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219775480U (en) |
-
2023
- 2023-04-10 CN CN202320767470.5U patent/CN219775480U/en active Active
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