CN212563852U

CN212563852U - Water pump fire-fighting device

Info

Publication number: CN212563852U
Application number: CN202021151366.6U
Authority: CN
Inventors: 张兵; 宦国权
Original assignee: Shanghai Lng Co ltd
Current assignee: Shanghai Lng Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-19
Anticipated expiration: 2030-06-19

Abstract

The utility model provides a water pump fire-fighting device, which comprises a water pump body, a water lifting pipe, a pressure sampling pipe and a pressure switch; the water pump body is provided with a water inlet and a water outlet; the water raising pipe is connected with the water inlet of the water pump body; the water storage pipe is connected with a water outlet of the water pump body; the pressure tapping pipe comprises a linear pipeline and a bent pipeline, the linear pipeline extends from the outside of the water storage pipe to the inside of the water storage pipe, the bent pipeline is positioned in the water storage pipe and is connected with one end of the linear pipeline, and one end of the bent pipeline, which is not connected with the linear pipeline, is bent downwards and has a distance with the bottom of the water storage pipe; the pressure switch is connected with one end of the straight line pipeline, which is not connected with the bent pipeline, and is connected with the water pump body. The utility model discloses can effectively solve the fire pump and often get the mistake that the pipe blockked up and arouse because of pressure switch and start with the trouble of unable start-up.

Description

Water pump fire-fighting device

Technical Field

The utility model relates to a fire-fighting equipment field especially relates to a water pump fire control unit.

Background

To ensure safety, most lng companies are located far from residential areas and close to water sources. In some seaside cities, lng companies are located at the seaside where no one lives, and diesel-oil pump fire-fighting devices are introduced to draw in seawater for use in emergency situations depending on local conditions. The starting conditions of the diesel pump fire fighting device are generally two types: firstly, when a fire disaster occurs in a factory, the fire fighting water consumption is large, and after a single electric fire pump is started, the flow requirement cannot be met, so that the pressure of a pipe network is started when the pressure of the pipe network is reduced to a set value; and secondly, fire fighting water is needed when a factory catches fire, and the related electric fire pump cannot be started due to reasons such as power supply interruption, and the fire fighting water pipe network is started when the pressure of the fire fighting water pipe network is reduced to a set value. The judgment basis of the two conditions is that pressure is led out of the pressure taking pipe from a pressure taking port at the bottom of an outlet pipeline of the fire pump and is communicated to a pressure switch, the set value of the pressure switch is the starting pressure of the diesel pump fire fighting device, and once the pressure in the outlet pipeline is lower than the set value, the diesel pump fire fighting device can be automatically started to inject seawater into the fire fighting water pipeline network so as to maintain the pressure in the pipe not to continuously decrease.

However, the seawater in the sea area bordering on the urban land has more impurities, especially the seawater intake of the company like the inventor is positioned at the entrance of the Yangtze river, the silt content in the seawater is quite high, and the silt is accumulated in the seawater pool in a large amount due to the reduction of the flow speed of the seawater after the seawater enters from the intake for a long time; under the normal condition, diesel pump fire control unit all will start once every month and carry out the capability test, at this in-process, will be sucked up a large amount of silt around the pump suction inlet, deposit in the outlet line that the level was arranged, arouse to establish and often be stifled full and malfunctioning by silt in the pressure switch pressure taking pipeline of bottom, once arouse many times that diesel pump fire control unit's mistake starts and can't start-up when testing.

The diesel pump fire fighting device can cause a series of problems after being started by mistake. Firstly, the malfunction of the fire fighting system equipment is increased, and serious consequences can be caused in case of fire alarm in the recovery process after the false start. Secondly, after diesel pump fire control unit miscoording starts, will make the sea water that contains silt and chloride ion in a large number get into fire-fighting water pipe-line system, silt can make the small pipeline on equipments such as deluge valve block up, influences its normal service function, and chloride ion will cause the corruption of carbon steel pipeline and equipment, will influence the life of equipment and pipeline in the long term.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, an object of the utility model is to provide a water pump fire control unit for the pressure pipe that fetches pressure of solving water pump fire control unit among the prior art is located outlet line's bottom, is stifled full and malfunctioning by silt easily, can't start when causing water pump fire control unit's mistake to start or test easily, leads to the sea water to get into the corruption that fire-fighting water pipe-line system leads to equipment and pipeline easily, and/or influences the fire-fighting operation, causes serious production incident scheduling problem.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides a water pump fire fighting device, water pump fire fighting device includes: the water pump comprises a water pump body, a water raising pipe, a pressure taking pipe and a pressure switch; the water pump body is provided with a water inlet and a water outlet; the water raising pipe is connected with the water inlet of the water pump body; the water storage pipe is connected with a water outlet of the water pump body; the pressure tapping pipe comprises a linear pipeline and a bent pipeline, the linear pipeline extends from the outside of the water storage pipe to the inside of the water storage pipe, the bent pipeline is positioned in the water storage pipe and is connected with one end of the linear pipeline, and one end of the bent pipeline, which is not connected with the linear pipeline, is bent downwards and has a distance with the bottom of the water storage pipe; the pressure switch is connected with one end of the straight line pipeline, which is not connected with the bent pipeline, and is connected with the water pump body.

Optionally, the height of the straight line pipeline is greater than or equal to one third of the pipe diameter of the water storage pipe.

Optionally, the distance between one end of the bent pipeline, which is not connected with the linear pipeline, and the bottom of the water storage pipe is 1/3-3/4 of the diameter of the water storage pipe.

Optionally, the shape of the tortuous path includes one of an arc and a wave.

Optionally, a one-way valve is arranged between the water storage pipe and the water pump body.

Optionally, one end of the water storage pipe, which is not connected with the water pump body, is provided with a test valve and a main control valve, and the test valve and the main control valve are arranged in different directions.

Optionally, the water storage pipe is made of Monel.

Optionally, the pipe diameter of the water storage pipe is DN400mm, and the pipe diameter of the pressure tapping pipe is 3/4 inches.

Optionally, the water pump fire fighting device further comprises a flushing pipe and a flushing valve, the flushing pipe is connected with the water storage pipe, and the flushing valve is arranged on the flushing pipe.

More optionally, the connection between the water storage pipe and the flushing pipe is funnel-shaped.

As mentioned above, the utility model discloses a water pump fire control unit has following beneficial effect: the utility model discloses an install one section pressure pipe additional on original pressure port and will get the mouth of pipe partial bending of pressing the pipe, not only make the position of actually getting the pressure point lift properly inside the pipeline, silt is difficult for getting the pressure pipe from getting the interior deposit of pressure port, can make the water pressure in the pipeline pass through pressure pipe transmission to pressure switch moreover continuously, thereby keep the long-term normal reserve of water pump. The utility model discloses can fundamentally solve the sea water fire pump and often get the mistake that the pipe blockked up and arouse because of pressure switch and start with the trouble that can't start, improve fire emergency equipment's intact rate for the emergency function of sea water fire pump really can ensure, for the safety in the factory production protect drives the ship.

Drawings

Fig. 1 shows the structure schematic diagram of the water pump fire fighting device of the utility model.

Description of the element reference numerals

11 Water pump body

11a water inlet

11b water outlet

12-lift water pipe

13 water storage pipe

14 pressure sampling pipe

141 straight line pipeline

142 bending pipeline

15 pressure switch

16 one-way valve

17 test valve

18 master control valve

19 flushing pipe

20 flushing valve

21 sand and mud

22 sea water pool

23 Pump head

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated. The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1, the utility model provides a water pump fire fighting device, which comprises a water pump body 11, a water lifting pipe 12, a pressure sampling pipe 14 and a pressure switch 15; the water pump body 11 is provided with a water inlet 11a and a water outlet 11 b; the water raising pipe 12 is connected with a water inlet 11a of the water pump body 11; the water storage pipe 13 is connected to the water outlet 11b of the water pump body 11, the water storage pipe 13 is a part of a fire-fighting water pipeline system, the interior of the fire-fighting water pipeline system is usually filled with fresh water fire-fighting water and maintains stable pressure, when the water pressure in the water storage pipe 13, namely the internal pressure of the water storage pipe is lower than a set value, the pressure switch outputs a start signal, the seawater fire-fighting pump is automatically started to inject seawater into the fire-fighting water pipeline network, so that the pressure in the water storage pipe 13 is maintained not to be continuously reduced; the pressure sampling pipe 14 comprises a straight line pipe 141 and a bent pipe 142, the straight line pipe 141 extends from the outside of the water storage pipe 13 to the inside of the water storage pipe 13, the bent pipe 142 is located in the water storage pipe 13 and connected with one end of the straight line pipe 141, and one end of the bent pipe 142, which is not connected with the straight line pipe 141, is bent downwards and has a distance with the bottom of the water storage pipe 13; the pressure switch 15 is connected with one end of the straight pipeline 141, which is not connected with the bent pipeline 142, and is connected with the water pump body 11 (the two ends are connected through a connecting line); the pressure sampling pipe 14 acquires the pressure in the water storage pipe 13 and transmits the pressure to the pressure switch 15, the starting threshold value of the pressure switch 15 is the starting pressure value of the water pump body 11, and when the pressure switch 15 acquires that the pressure in the water storage pipe 13 is lower than the starting threshold value through the pressure sampling pipe 14, the pressure switch 15 starts the water pump body 11 to pump the seawater into the water storage pipe 13. The utility model discloses an install one section additional on original pressure taking mouth and get and will get the mouth of pipe partial bending of pipe 14, not only make the position of actually getting the pressure point suitably lift up inside the pipeline, silt is difficult for getting the interior deposit of pressure pipe from getting, can make the water pressure in the pipeline pass through pressure pipe transmission to pressure switch moreover continuously, thereby keep the long-term normal reserve of water pump. The utility model discloses can fundamentally solve fire pumps such as sea water fire pump often get the mistake that the pipe blockked up and arouse because of pressure switch and start with the trouble that can't start, improve fire emergency equipment's intact rate for the emergency function of all kinds of fire pumps including diesel oil fire pump really can be ensured, for the safety in the factory production protect and drive the ship of protecting.

The water pump body 11 includes power structures such as an impeller and a bearing, the pumping pipe 12 is connected with the pump head 23, and the pump head 23 is immersed in a water source, such as a sea water pool 22, to take water from the water source. In the factory of the applicant, because the sea water intake is located the Yangtze river and goes into the sea mouth, 21 contents of silt in the sea water are very high, lead to very easily that 14 interior stifled by silt of pressure switch 15 pressure pipe are out of order, then arouse unable start-up when diesel pump fire control unit's mistake starts and tests, cause serious threat to production safety, and the utility model discloses improve the countermeasure to this. Of course, in order to minimize the suction of silt, a filter may be provided at the water intake of the riser 12.

In order to maintain a high water level in the water storage pipe 13 in consideration of a high content of the silt 21, the height of the straight line pipe 141 is, for example, equal to or greater than one third of the pipe diameter of the water storage pipe 13.

Of course, the water level inside the water storage pipe 13 can be maintained at a high level by increasing the distance between the bent pipe 142 and the bottom of the water storage pipe 13. In one example, the distance between the end of the bent pipe 142 not connected with the linear pipe 141 and the bottom of the water storage pipe 13 is 1/3-3/4 of the pipe diameter of the water storage pipe 13. It should be noted that the straight line pipeline 141 and the bent pipeline 142 are merely defined for convenience of description, and may be physically integrated with each other, and only one end of the pressure-taking port of the pressure-taking pipe 14 is bent. The shape of the bent pipe 142 may be set according to needs, including but not limited to one of an arc shape and a wave shape, but it is required to ensure that the water flow direction is not affected, the bent pipe 142 is not strictly required to be bent downward vertically and may be bent downward at a certain inclination angle, and the pressure sampling pipe 14 preferably does not contact with the top of the water storage pipe 13, or has a distance from the top of the water storage pipe 13.

As an example, a check valve 16 is provided between the water storage pipe 13 and the water pump body 11 to prevent backflow.

As an example, a test valve 17 and a main control valve 18 are disposed at one end of the water storage pipe 13, which is not connected to the water pump body 11, and the test valve 17 and the main control valve 18 are disposed in different directions to introduce the seawater in the water storage pipe 13 into different regions. Or a plurality of branch pipes can be branched from the end of the water storage pipe 13 not connected with the water pump body 11, different branch pipes are connected with different areas, and the test valve 17 and the main control valve 18 are arranged on the corresponding branch pipes. For example, by opening the main control valve 18, seawater in the water storage pipe 13 can be injected into a fire-fighting water pipe network; by opening the test valve 17, the seawater in the storage pipe 13 can be introduced into the seawater pool in the plant.

For example, Monel (copper-nickel alloy) is preferable for the material of the water storage pipe 13, and Monel can be used for the structures of the pressure tapping pipe 14, the check valve 16, the water lifting pipe 12, the pump head 23, etc. that are in close contact with the seawater, while the pipeline behind the main control valve 18 can be made of common carbon steel to reduce the cost.

In one example, the diameter of the water storage pipe 13 is DN400 mm. The pipe diameter of the pressure pipe 14 should not be too small or too large, and in one example, the pipe diameter of the pressure pipe 14 is 3/4 inches, so as to increase the rigidity and strength of the pressure pipe, a reinforcing rib may be further added thereto.

As an example, the water pump fire fighting device further comprises a flushing pipe 19 and a flushing valve 20, wherein the flushing pipe 19 is connected with the water storage pipe 13, and the flushing valve 20 is arranged on the flushing pipe 19. By opening the flushing valve 20, silt in the water storage pipe 13 can flow out of the water storage pipe 13 through the flushing pipe 19, and the flushing process can be synchronously performed in the process of continuously taking water from the water lifting pipe 12. In order to discharge the silt deposited at the bottom of the water storage pipe 13 through the flushing pipe 19 as much as possible, the connecting position of the water storage pipe 13 and the flushing pipe 19 may be set to be funnel-shaped, or the horizontal plane corresponding to the position of the flushing pipe 19 in the water storage pipe 13 is lower than the horizontal plane corresponding to the position of the pressure sampling pipe 14.

The following exemplary description the utility model discloses a water pump fire control unit's test procedure:

switching the water pump body to a manual state- > closing the main control valve- > starting the pump- > opening the test valve- > returning the seawater from the test valve to the seawater pool; after the test is finished, stopping the pump, closing the test valve, opening the flushing valve, evacuating the seawater, closing the flushing valve, opening the main control valve, slowly opening the flushing valve to flush the water storage pipe, closing the flushing valve, and switching the seawater fire pump to be automatic.

The utility model discloses a water pump fire control unit is particularly useful for in the impurity such as silt in all kinds of fire control water sources including sea water and fresh water is more than the environment, can effectively avoid pressing the trouble that the pipe was blockked up and the unable start-up of pressure switch pressure taking, improves fire control emergency equipment's intact rate (the less water source environment of conventional silt is equally suitable for, and its advantage is especially outstanding when only operating in the more water source environment of silt). In addition, the inventor finds through many times of experiments, the utility model discloses a water pump fire control unit not only is applicable to diesel oil fire pump, is applicable to the fire pump of other types such as electronic fire pump equally, can effectively avoid getting the jam of pressing the pipe, avoids the trouble of fire control facility, ensures fire control safety.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A water pump fire fighting device, comprising:

the water pump comprises a water pump body, wherein a water inlet and a water outlet are formed in the water pump body;

the water raising pipe is connected with the water inlet of the water pump body;

the water storage pipe is connected with the water outlet of the water pump body;

the pressure tapping pipe comprises a linear pipeline and a bent pipeline, the linear pipeline extends from the outside of the water storage pipe to the inside of the water storage pipe, the bent pipeline is positioned in the water storage pipe and is connected with one end of the linear pipeline, one end of the bent pipeline, which is not connected with the linear pipeline, is bent downwards, and a gap is formed between the bent pipeline and the bottom of the water storage pipe;

and the pressure switch is connected with one end of the straight line pipeline, which is not connected with the bent pipeline, and is connected with the water pump body.

2. The water pump fire fighting device of claim 1, wherein: the height of the straight line pipeline is more than or equal to one third of the pipe diameter of the water storage pipe.

3. The water pump fire fighting device of claim 1, wherein: the bent pipeline is not connected with the straight line pipeline, and the distance between one end of the bent pipeline and the bottom of the water storage pipe is 1/3-3/4 of the diameter of the water storage pipe.

4. The water pump fire fighting device of claim 1, wherein: the shape of the bent pipeline comprises one of arc shape and wave shape.

5. The water pump fire fighting device of claim 1, wherein: a one-way valve is arranged between the water storage pipe and the water pump body.

6. The water pump fire fighting device of claim 1, wherein: the water storage pipe is provided with a test valve and a main control valve at one end which is not connected with the water pump body, and the test valve and the main control valve are arranged in different directions.

7. The water pump fire fighting device of claim 1, wherein: the water storage pipe is made of Monel.

8. The water pump fire fighting device of claim 1, wherein: the pipe diameter of the water storage pipe is DN400mm, and the pipe diameter of the pressure tapping pipe is 3/4 inches.

9. A water pump fire fighting device as defined in any one of claims 1 to 8, characterized in that: the water pump fire-fighting device further comprises a flushing pipe and a flushing valve, the flushing pipe is connected with the water storage pipe, and the flushing valve is arranged on the flushing pipe.

10. The water pump fire fighting device of claim 9, wherein: the joint of the water storage pipe and the flushing pipe is funnel-shaped.