CN113279976A - Control method for directly starting fire-fighting water pump by pressure switch of alarm valve set - Google Patents
Control method for directly starting fire-fighting water pump by pressure switch of alarm valve set Download PDFInfo
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- CN113279976A CN113279976A CN202110267371.6A CN202110267371A CN113279976A CN 113279976 A CN113279976 A CN 113279976A CN 202110267371 A CN202110267371 A CN 202110267371A CN 113279976 A CN113279976 A CN 113279976A
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- control
- alarm valve
- fire
- pressure switch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a control method for directly starting a fire pump by a pressure switch of an alarm valve group, which comprises the following steps: the method comprises the following steps of designing a circuit layout according to the positions of an existing fire pump control box, a building structure and an alarm valve group; two groups of control wires are respectively led out from two connecting terminals of a fire pump control box, and each zero line and each live wire form a group; one group of control wires is laid in the forward direction, and the zero wire and the live wire are respectively and electrically connected with a terminal of the alarm valve group and a wiring terminal of the fire pump; the other group of control wires are reversely laid, and a zero wire and a live wire are respectively and electrically connected with a terminal of the alarm valve group and a wiring terminal of the fire pump; by the parallel laying of the loop closed loop, the construction line is shorter, the material consumption is less, and the construction labor cost is low; by laying the double-control-line reverse loop and assisting the parallel connection mode, starting is not influenced when a single-point line fails, the fault surface is small when a multipoint line fails, the pressure drop is smaller, and the control signal is safe and effective.
Description
Technical Field
The invention relates to the technical field of fire fighting facilities, in particular to a control method for directly starting a fire fighting water pump by a pressure switch of an alarm valve group.
Background
According to GB50084-2017 design Specification of automatic water-spraying fire-extinguishing systems: the temperature type system and the dry type system directly and automatically start the fire pump by a pressure switch arranged on a fire pump water outlet main pipe, a flow switch on a high-level fire water tank water outlet pipe and a pressure switch of an alarm valve group. For some medium and large-sized factory sites such as a whole automobile production factory site, the condition that a single building has a plurality of alarm valve sets and a plurality of single buildings have a plurality of alarm valve sets exists. Under the condition, if the control circuit of the water pump is laid in a radial mode when the pressure switch of the alarm valve group directly starts, the number of the control circuit can reach dozens or even dozens, the length of the control circuit can reach hundreds or even thousands of meters, and the construction labor cost, the material cost and the construction difficulty are high. If the control circuit of the fire water pump directly started by the pressure switch of the alarm valve group is laid in a tree-dry mode, namely the pressure switches on one circuit are connected in parallel and in series, the mode saves material and labor cost, but once the circuit fails, the pressure switch of the alarm valve group at the lower end of a failure point cannot directly start the fire water pump, and the reliability is very low; and the single line is too long in laying distance, which may reach several kilometers, and the tail end voltage drop can not meet the requirement, which can cause signal transmission failure.
Disclosure of Invention
The invention aims to provide a control method for directly starting a fire water pump by a pressure switch of an alarm valve group, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a control method for directly starting a fire pump by a pressure switch of an alarm valve group comprises the following steps:
2, two groups of control lines are led out from two wiring terminals of the fire pump control box respectively, and each zero line and each fire line form a group;
and 4, the other group of control lines is reversely laid, and the zero line and the live line are respectively and electrically connected with the terminal of the alarm valve group and the wiring terminal of the fire pump.
In the step 1, a pressure switch is arranged in the alarm valve group, feedback terminals of the pressure switch are respectively connected with a zero line and a live line of two groups of control lines in parallel, and a trigger end of the pressure switch is arranged in a water elimination and prevention pipe arranged on the alarm valve group.
And (4) reversely laying the two groups of control lines in the steps from step 2 to step 4, wherein the two groups of control lines form a double closed loop, and the zero line and the live line of the two groups of control lines are both closed and isolated by an insulating device.
The control method based on the steps 1 to 4 mainly comprises the following steps:
pressure switch through in the warning valves monitors the pressure variation in the fire water pipe, when pressure changes, feeds back to the water pump control case through the control line, and the water pump contactor auxiliary contact in the water pump control case converts normal close state into, makes the circuit intercommunication then for the fire pump lasts work.
Compared with the prior art, the invention has the beneficial effects that:
more economical: by the parallel laying of the loop closed loop, the construction line is shorter, the material consumption is less, and the construction labor cost is low.
More reliable: by laying the double-control-line reverse loop and assisting the parallel connection mode, starting is not influenced when a single-point line fails, the fault surface is small when a multi-point line fails, the pressure drop is smaller, and control signals are safe and effective.
Drawings
Fig. 1 is a secondary principle illustration of a fire pump.
Fig. 2 is an exemplary diagram of a fire pump terminal.
Fig. 3 is a schematic diagram of the principle of the present invention.
Fig. 4 is a wiring schematic of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-4, the present invention provides a technical solution: a control method for directly starting a fire pump by a pressure switch of an alarm valve group comprises the following steps:
2, two groups of control lines are led out from two wiring terminals of the fire pump control box respectively, and each zero line and each fire line form a group;
and 4, the other group of control lines is reversely laid, and the zero line and the live line are respectively and electrically connected with the terminal of the alarm valve group and the wiring terminal of the fire pump.
In the step 1, a pressure switch is arranged in the alarm valve group, feedback terminals of the pressure switch are respectively connected with a zero line and a live line of two groups of control lines in parallel, and a trigger end of the pressure switch is arranged in a water elimination and prevention pipe arranged on the alarm valve group.
And (4) reversely laying the two groups of control lines in the steps from step 2 to step 4, wherein the two groups of control lines form a double closed loop, and the zero line and the live line of the two groups of control lines are both closed and isolated by an insulating device.
The control method based on the steps 1 to 4 mainly comprises the following steps:
pressure switch through in the warning valves monitors the pressure variation in the fire water pipe, when pressure changes, feeds back to the water pump control case through the control line, and the water pump contactor auxiliary contact in the water pump control case converts normal close state into, makes the circuit intercommunication then for the fire pump lasts work.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements or in a relationship wherein two elements interact with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the details are not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A control method for directly starting a fire pump by a pressure switch of an alarm valve group is characterized by comprising the following steps: the method comprises the following steps:
step 1, designing a circuit layout according to the positions of an existing fire pump control box, a building structure and an alarm valve group;
2, two groups of control lines are led out from two wiring terminals of the fire pump control box respectively, and each zero line and each fire line form a group;
step 3, a set of control wires is laid in the forward direction, and the zero line and the live wire are respectively and electrically connected with a terminal of the alarm valve set and a wiring terminal of the fire pump;
and 4, the other group of control wires is reversely laid, and the zero line and the live wire are respectively and electrically connected with the terminal of the alarm valve group and the wiring terminal of the fire pump.
2. The control method for directly starting the fire water pump by the pressure switch of the alarm valve bank according to claim 1, wherein the control method comprises the following steps: in the step 1, a pressure switch is arranged in the alarm valve group, a feedback terminal of the pressure switch is respectively connected with a zero line and a live line of two groups of control lines in parallel, and a trigger end of the pressure switch is arranged in a fire hose installed in the alarm valve group.
3. The control method for directly starting the fire water pump by the pressure switch of the alarm valve bank according to claim 1, wherein the control method comprises the following steps: and (4) reversely laying the two groups of control lines in the steps from step 2 to step 4, wherein the two groups of control lines form a double closed loop, and the zero lines and the live lines of the two groups of control lines are both closed and isolated by an insulating device.
4. The control method for directly starting the fire water pump by the pressure switch of the alarm valve bank according to claim 1, wherein the control method comprises the following steps: the control method based on the steps 1 to 4 mainly comprises the following steps:
pressure switch through in the warning valves monitors the pressure variation in the fire water pipe, when pressure changes, feeds back to the water pump control box through the control line, and the water pump contactor auxiliary contact in the water pump control box converts the normally closed state into, makes the circuit intercommunication then for the fire pump lasts work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267371.6A CN113279976B (en) | 2021-03-12 | 2021-03-12 | Control method for directly starting fire-fighting water pump by pressure switch of alarm valve set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267371.6A CN113279976B (en) | 2021-03-12 | 2021-03-12 | Control method for directly starting fire-fighting water pump by pressure switch of alarm valve set |
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| Publication Number | Publication Date |
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| CN113279976A true CN113279976A (en) | 2021-08-20 |
| CN113279976B CN113279976B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110267371.6A Active CN113279976B (en) | 2021-03-12 | 2021-03-12 | Control method for directly starting fire-fighting water pump by pressure switch of alarm valve set |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1348494A (en) * | 1970-11-18 | 1974-03-20 | Westinghouse Brake & Signal | Switching apparatus |
| CN203303543U (en) * | 2013-05-09 | 2013-11-27 | 福建科能中志建设发展有限公司 | Wet-type automatic water sprinkling extinguisher |
| CN208156489U (en) * | 2018-03-23 | 2018-11-27 | 广东南华西电气有限公司 | A kind of fire protection electric control system |
| CN208756840U (en) * | 2018-06-27 | 2019-04-19 | 南京飞龙特种消防设备制造有限公司 | A kind of container value pressure monitoring system |
| CN212395697U (en) * | 2020-03-05 | 2021-01-26 | 济南威图电子产品有限公司 | Wireless fire alarm automatic fire extinguishing system |
-
2021
- 2021-03-12 CN CN202110267371.6A patent/CN113279976B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1348494A (en) * | 1970-11-18 | 1974-03-20 | Westinghouse Brake & Signal | Switching apparatus |
| CN203303543U (en) * | 2013-05-09 | 2013-11-27 | 福建科能中志建设发展有限公司 | Wet-type automatic water sprinkling extinguisher |
| CN208156489U (en) * | 2018-03-23 | 2018-11-27 | 广东南华西电气有限公司 | A kind of fire protection electric control system |
| CN208756840U (en) * | 2018-06-27 | 2019-04-19 | 南京飞龙特种消防设备制造有限公司 | A kind of container value pressure monitoring system |
| CN212395697U (en) * | 2020-03-05 | 2021-01-26 | 济南威图电子产品有限公司 | Wireless fire alarm automatic fire extinguishing system |
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| Publication number | Publication date |
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| CN113279976B (en) | 2023-03-28 |
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Address after: No. 1958, Chuangye street, Changchun automobile economic and Technological Development Zone, Changchun City, Jilin Province, 130011 Applicant after: The Ninth Design and Research Institute of Machinery Industry Co.,Ltd. Address before: No. 1958, Chuangye street, Changchun automobile economic and Technological Development Zone, Changchun City, Jilin Province, 130011 Applicant before: Machinery Industry Ninth Design and Research Institute Co.,Ltd. |
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