CN212052976U - System for guaranteeing fire-fighting water quantity of small pump room under fire-fighting water sharing condition - Google Patents
System for guaranteeing fire-fighting water quantity of small pump room under fire-fighting water sharing condition Download PDFInfo
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- CN212052976U CN212052976U CN202020373836.7U CN202020373836U CN212052976U CN 212052976 U CN212052976 U CN 212052976U CN 202020373836 U CN202020373836 U CN 202020373836U CN 212052976 U CN212052976 U CN 212052976U
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Abstract
The utility model discloses a system for ensuring the fire-fighting water quantity of a small pump room under the condition of sharing fire-fighting water, which comprises a reservoir, wherein the reservoir is connected with a pressure pump through a water suction pipe, and the pressure pump is connected with a remote water community or a factory through a water outlet pipe; a fire hydrant is arranged on the water outlet pipe, and a liquid level control valve is arranged on the water outlet pipe behind the fire hydrant; a water outlet pipe between the fire hydrant and the liquid level control valve is connected with a water drain pipe, the free end of the water drain pipe is connected with a reservoir, and the water drain pipe is provided with an overpressure relief valve; and a liquid level indicator is arranged in the reservoir. The utility model discloses effectively guarantee fire-fighting water safety, and the investment increase is very little, has wide application prospect.
Description
Technical Field
The utility model belongs to pipe network design field under life (production) and the sharing of fire-fighting water, concretely relates to system to guarantee fire-fighting water yield under life (production) and the sharing condition of fire-fighting water does not do other usefulness suitable for small-size middle promotion pump station.
Background
Along with the rapid development of economy in China, urbanization is more and more rapid, and the development of communities and industries shows a centralized trend, so that a plurality of newly-added centralized water demands appear, a water supply source needs to be opened from a municipal water supply main trunk pipe, and the normal living and production water of newly-added centralized communities and factories is ensured. Because of the difference in urban planning, the length of newly-increased raceway network is different, generally varies from several kilometers to tens kilometers, because municipal pressure is not enough, often needs newly-increased promotion pump station midway, guarantees that the water supply pressure of arriving terminal community, mill can satisfy design requirement or actual water demand.
The middle lifting pump station is generally far away in position, small in scale and limited in indoor space, and if an independent fire fighting system is added, the investment is too much and the cost performance is not enough; the low-pressure fire fighting is realized by utilizing the water pressure, and the pressure requirement is often not met, so that the condition that a pressurizing pump of a pump room is used as a high-pressure fire fighting system exists when the condition is proper.
Such a system has the following features:
(1) the method comprises the following steps that a selected booster pump in a pump station is in an operating high-efficiency interval under a normal working condition, and when fire flow conveying is undertaken under the fire-fighting working condition, the water supply pressure reaching a terminal community and a factory can still meet requirements, namely a head-flow curve of the water pump can be matched with the requirements of the normal working condition and the fire-fighting working condition;
(2) the pressure of the booster pump under the normal working condition is lower than the maximum working pressure of the fire hydrant, and a certain margin is left;
(3) the living (production) pool of the system is shared with a fire pool, a water suction pipe is shared, a pressure pump is shared, and a fire hydrant outside a pump room is connected on a water delivery pipe network.
The characteristic (1) shows that the specific gravity of the fire fighting flow is smaller than that of the normal water delivery flow; the characteristic (2) shows that the system cannot directly cause overpressure damage of the fire hydrant due to pressure fluctuation; the characteristic (3) shows that the system can not realize the measure of ensuring that the fire-fighting water is not used for other purposes, if the water in the pool of the pump station is supplemented, and the fire disaster happens in the pump room, the situation that the disposable fire-fighting water consumption can not be ensured exists, the equipment of the house of the pump station is damaged, and the normal domestic and production water of the terminal community and the factory is influenced before the repair.
SUMMERY OF THE UTILITY MODEL
The utility model is exactly for solve above-mentioned technical problem, provide a guarantee fire water yield under the shared circumstances of life (production) and fire water and do not do other system of usefulness suitable for small-size middle promotion pump station, guarantee fire water safety, and the investment increase is very little.
The utility model discloses a realize through following technical scheme:
a system for ensuring the fire-fighting water quantity of a small pump room under the condition of sharing fire-fighting water comprises a reservoir, wherein the reservoir is connected with a booster pump through a water suction pipe, and the booster pump is connected with a remote water-using community or a factory through a water outlet pipe; a fire hydrant is arranged on the water outlet pipe, and a liquid level control valve is arranged on the water outlet pipe behind the fire hydrant; a water outlet pipe between the fire hydrant and the liquid level control valve is connected with a water drain pipe, the free end of the water drain pipe is connected with a reservoir, and the water drain pipe is provided with an overpressure relief valve; and a liquid level indicator is arranged in the reservoir.
Further, the booster pump is a variable frequency booster pump.
Furthermore, the booster pump is arranged in the pump room, and the pump room is only provided with one set of booster pump and is not provided with an independent fire pump, an air pressure tank and a pressure stabilizing pump.
Furthermore, the water outlet pipe is provided with 1 or more fire hydrant.
Further, the liquid level indicator is linked with the liquid level control valve.
Furthermore, the fire hydrant is arranged outside the pump room.
Further, the liquid level control valve is arranged in front of the tail end of the ground for the outlet pipe to go out of the pump station.
Furthermore, a normal water level, an alarm water level, a fire-fighting reserved water level and a pump-stopping water level are arranged in the reservoir.
The utility model has the advantages that:
the utility model discloses a change superpressure relief pipe mounted position to increase liquid level control valve, share in the pond, absorb water the union coupling, the force (forcing) pump shares, the pipe network shares under the circumstances, realize keeping the fire water yield and do not do other possibilities of usefulness, the advantage as follows:
1. the investment is increased less, and compared with the original system, only one liquid level control valve and a small amount of pipelines are added;
2. the system is convenient to switch in a linkage manner, and key nodes do not need to be manually opened or closed;
3. the working frequency conversion of the variable frequency pump can adapt to the conversion of normal working conditions and fire-fighting working conditions, and the energy is relatively saved;
4. through the circulation of the reservoir, the variable-frequency booster pump, the water drain pipe and the reservoir, the working pressure of the outdoor fire hydrant can be ensured, the one-time investment cost of a pressure stabilizing pump is not needed, and a worker can decide whether to stop the pump or not according to the actual water replenishing recovery progress (such as municipal water cut-off) and the possibility of fire (whether a pump room warehouse is used for storing inflammable substances at that time) so as to save the electricity charge;
5. the overpressure relief valve still has the same protection effect on the water pump as the original system.
Drawings
FIG. 1 is a schematic diagram of a conventional domestic (production) and firewater sharing system for a small intermediate lift pump station in the prior art;
fig. 2 is a schematic view of the system for using life (production) and fire-fighting water of the small-sized middle lift pump station.
Wherein: 1. a suction pipe; 2, a pressure pump;
3. a fire hydrant; 4, an overpressure relief valve;
5. a drain pipe; a liquid level indicator;
7. a water outlet pipe; a level control valve.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be further described by the following detailed description with reference to the accompanying drawings.
As shown in fig. 1-2, a system for ensuring the fire fighting water quantity of a small pump room under the condition of fire fighting water usage comprises a reservoir, wherein the reservoir is connected with a booster pump 2 through a suction pipe 1, and the booster pump 2 is connected with a remote water usage community or a factory through a water outlet pipe 7; a fire hydrant 3 is arranged on the water outlet pipe 7, and a liquid level control valve 8 is arranged on the water outlet pipe 7 behind the fire hydrant 3; a water outlet pipe 7 between the fire hydrant 3 and the liquid level control valve 8 is connected with a water outlet pipe 5, the spare end of the water outlet pipe 5 is connected with a reservoir, and the water outlet pipe 5 is provided with an overpressure relief valve 4; a liquid level indicator 6 is arranged in the reservoir.
The booster pump 2 is a variable frequency booster pump.
The booster pump 2 is arranged in the pump room, and the pump room is only provided with one set of booster pump 2 and is not provided with an independent fire pump, an air pressure tank and a pressure stabilizing pump.
And the water outlet pipe 7 is provided with more than 1 fire hydrant 3.
The liquid level indicator 6 is linked with a liquid level control valve 8.
The fire hydrant 3 is arranged outside the pump room.
The level control valve 8 is installed before the water outlet pipe 7 is out of the tail end of the ground for the pump station.
And a normal water level, an alarm water level, a fire-fighting reserved water level and a pump-stopping water level are arranged in the reservoir.
As shown in fig. 1, the operation of the system for combining the domestic production and the fire-fighting water of the conventional small-sized intermediate lift pump station in the prior art is as follows: the variable-frequency booster pump 2 in the pump room absorbs water from the reservoir through the water absorption pipe 1, a pressurized water source is supplied to a remote water-using community or a factory through the water outlet pipe 7, and the fire hydrant 3 outside the pump room is connected to the water outlet pipe 7. Meanwhile, a liquid level indicator 6 is arranged in the water tank, when the liquid level in the water tank is reduced to a pump stopping water level, in order to prevent cavitation, the variable-frequency pressure pump 2 is automatically stopped. The water outlet pipe 7 adjacent to the booster pump 2 is connected with the water outlet pipe 5, when the pressure of the variable-frequency booster pump 2 exceeds the maximum allowable value, the overpressure relief valve 4 on the water outlet pipe 5 is automatically opened, and pressurized water returns to the reservoir through the water outlet pipe 5, so that the water outlet pipe 7 and the booster pump are protected. The system can not ensure the fire fighting water quantity to be used when the pump operates, and can not ensure the pressure required by outdoor fire fighting of the pressurizing pump room after the pump is stopped.
The utility model discloses a system for using life (production) and fire-fighting water of a small-sized intermediate lift pump station is shown in figure 2, a variable frequency pressure pump 2 in a pump room absorbs water from a reservoir through a water suction pipe 1, a pressurized water source is supplied to a remote end water community or a factory through a water outlet pipe 7, and an outdoor fire hydrant 3 of the pump room is connected on the water outlet pipe 7 and is provided with a liquid level control valve 8; a liquid level indicator 6 is arranged in the water tank and can be linked with a liquid level control valve 8. A water drain pipe 5 is arranged in front of the liquid level control valve 8 and connected to the reservoir, and an overpressure relief valve 4 is arranged on the water drain pipe 5.
The height of the fire-fighting reserved water level is calculated according to the size of the reservoir, and the stored water volume is not less than the water volume required by primary fire fighting. The alarm water level height is between the fire-fighting reserved water level and the normal water level, when the water level is reduced to the alarm water level due to the water supplement problem, the liquid level indicator 6 triggers an alarm function to remind workers to repair the water supplement problem; when the water level is further reduced to a reserved water level for fire fighting, the liquid level indicator 6 transmits a water level signal to the liquid level control valve 8, the liquid level control valve 8 is slowly closed, the flow of the water outlet pipe 7 is gradually reduced at the moment, the frequency of the variable-frequency pressure pump 2 starts to be reduced, the conveying flow is reduced, but the pressure of the pipeline gradually rises, when the pipeline exceeds a preset maximum allowable value, the overpressure relief valve 4 is opened, the variable-frequency pump is in a high-lift-low-flow working state at the moment, the pressurized water in the water outlet pipe 7 is not communicated to a remote-end water using community or factory any more, all the pressurized water is returned to the water storage tank, and the water is continuously circulated under the relatively energy-saving condition, so that the water. When the water replenishing of the reservoir is recovered to be normal, the liquid level gradually rises, the liquid level indicator 6 transmits a water level signal to the liquid level control valve 8, the liquid level control valve 8 is slowly opened, the conveying flow of the water outlet pipe 7 is increased, the pipeline pressure is reduced, the overpressure relief valve 4 is closed, the frequency of the variable-frequency pressure pump 2 is increased, and the state is recovered to be in a normal working condition.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (8)
1. The utility model provides a guarantee system of small-size pump house fire water volume under fire water shared condition, includes the cistern, its characterized in that: the reservoir is connected with a booster pump (2) through a water suction pipe (1), and the booster pump (2) is connected with a remote water community or a factory through a water outlet pipe (7); a fire hydrant (3) is arranged on the water outlet pipe (7), and a liquid level control valve (8) is arranged on the water outlet pipe (7) behind the fire hydrant (3); a water outlet pipe (7) between the fire hydrant (3) and the liquid level control valve (8) is connected with a water drain pipe (5), the spare end of the water drain pipe (5) is connected with a water storage tank, and the water drain pipe (5) is provided with an overpressure relief valve (4); a liquid level indicator (6) is arranged in the reservoir.
2. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: the booster pump (2) is a variable frequency booster pump.
3. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: the booster pump (2) is arranged in the pump room, and the pump room is only provided with one set of booster pump (2) and is not provided with an independent fire pump, an air pressure tank and a pressure stabilizing pump.
4. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: and the water outlet pipe (7) is provided with 1 or more fire hydrant (3).
5. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: the liquid level indicator (6) is linked with the liquid level control valve (8).
6. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: the fire hydrant (3) is arranged outside the pump room.
7. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: the liquid level control valve (8) is arranged in front of the tail end of the water outlet pipe (7) which is out of the ground for the pump station.
8. The system of claim 1, wherein the pump house is adapted to provide a fire protection water volume when the pump house is used for fire protection water usage, the system comprising: and a normal water level, an alarm water level, a fire-fighting reserved water level and a pump-stopping water level are arranged in the reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020373836.7U CN212052976U (en) | 2020-03-23 | 2020-03-23 | System for guaranteeing fire-fighting water quantity of small pump room under fire-fighting water sharing condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020373836.7U CN212052976U (en) | 2020-03-23 | 2020-03-23 | System for guaranteeing fire-fighting water quantity of small pump room under fire-fighting water sharing condition |
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| Publication Number | Publication Date |
|---|---|
| CN212052976U true CN212052976U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020373836.7U Active CN212052976U (en) | 2020-03-23 | 2020-03-23 | System for guaranteeing fire-fighting water quantity of small pump room under fire-fighting water sharing condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212052976U (en) |
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2020
- 2020-03-23 CN CN202020373836.7U patent/CN212052976U/en active Active
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