CN215335802U

CN215335802U - Water spraying device of LNG station

Info

Publication number: CN215335802U
Application number: CN202120356018.0U
Authority: CN
Inventors: 林业; 郑君毅; 范玉勋
Original assignee: Zhaoqing Xinao Gas Co ltd
Current assignee: Zhaoqing Xinao Gas Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-12-28
Anticipated expiration: 2031-02-06

Abstract

The utility model provides a water spraying device of an LNG station, which comprises a controller, a water supply channel, a water spraying pipe and a rotary nozzle, wherein the water spraying pipe is arranged on the controller; the water supply channel is provided with a water pump which is electrically connected with the controller; the water spray pipe is divided into two sections which are respectively a first water spray pipe and a second water spray pipe, the first water spray pipe is provided with an annular water spray nozzle, the second water spray pipe comprises an inner pipe and an outer pipe, the outer pipe is provided with a driving motor and a driving gear, the output end of the driving motor is connected to the driving gear, and the driving motor is electrically connected to the controller; the rotary nozzle is rotatably connected to the upper end of the second water spray pipe, the lower end of the rotary nozzle is provided with a bent part, and the side wall of the rotary nozzle is provided with a water spray opening; the rotary nozzle is rotatably connected with the water spraying pipe, so that water can be sprayed at a fixed point in a high-temperature area, the temperature can be reduced in time, and the probability of fire disaster in a station is reduced.

Description

Water spraying device of LNG station

Technical Field

The utility model belongs to the field of water spraying devices of gas storage stations, and particularly relates to a water spraying device of an LNG station.

Background

In recent years, the LNG (liquefied natural gas) industry in China has been rapidly expanded, and a plurality of LNG liquefaction plants, LNG receiving stations, a large number of LNG refueling stations, and the like have been put into use. Due to the fact that the LNG temperature is extremely low (-162 ℃), the gas-liquid expansion ratio is large, most LNG stations are constructed in the open air, and when the air temperature is high in summer, LNG leaked in the transportation or storage process is easy to mix with air, and a large-range combustible gas gathering area is formed on the ground near an LNG leakage point easily. Once the LNG station is ignited by open fire, serious accidents such as fire flashover, pool fire and even explosion can be caused, and great harm is caused to the life and property safety of the LNG station and people around the LNG station.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above problems, an object of the present invention is to provide a water spray apparatus of an LNG yard, including a water supply passage, a water spray pipe, and a rotary nozzle;

the water supply channel is provided with a water pump and a controller, and the water pump is electrically connected with the controller;

the water spraying pipes comprise a first water spraying pipe and a second water spraying pipe, the second water spraying pipe is arranged above the first water spraying pipe, the first water spraying pipe and the second water spraying pipe are coaxial, the first water spraying pipe is provided with an annular water spraying nozzle, the second water spraying pipe comprises an inner pipe and an outer pipe, the inner wall of the outer pipe is tightly attached to the outer wall of the inner pipe, the inner wall of the inner pipe forms a water flow channel, the upper end of the inner pipe and the lower side of the upper end of the outer pipe form an accommodating cavity, the outer pipe is provided with a driving motor and a driving gear, and the driving gear is connected to the output end of the driving motor;

the rotary nozzle is rotatably connected to the upper end of the second water spray pipe, a bent part is arranged at the lower end of the rotary nozzle and located in the accommodating cavity, insections corresponding to the driving gear are arranged on the outer side of the bent part, the bent part is meshed with the driving gear, and a water spray opening is formed in the side wall of the rotary nozzle.

Further, the lower extreme of department of buckling still is equipped with the leak protection packing ring, prevents the lower extreme of department of buckling with gap infiltration between the upper end of inner tube soaks other structures.

Further, the water jet is flat.

Furthermore, the water spray opening is provided with a separation net, so that the phenomenon that the station storage tank is damaged by impact due to overlarge water pressure of water spray caused by water flow concentration is avoided.

Furthermore, the upper end of the rotary nozzle is also provided with a high-level water spray nozzle for spraying water to a high-level point.

The utility model has the beneficial effects that:

(1) through setting up the rotary nozzle with spray pipe swivelling joint, can spray water to the regional fixed point that the temperature is high, in time cool down, reduce the probability that the station conflagration took place.

(2) Set up annular watering nozzle, annular watering water spray can spray the water droplet that easily flies apart, except can playing the cooling effect of wide range, can also reduce the concentration of leaking the natural gas in the air, improves the factor of safety in station.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a rotary nozzle;

FIG. 3 is a schematic cross-sectional view of a rotary nozzle;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

FIG. 5 is a schematic top view of the rotary nozzle;

FIG. 6 is a schematic side sectional view of a rotary nozzle;

wherein, 1, a water supply channel; 11. a water pump; 2. a water spray pipe; 21. a first water spray pipe; 22. a second water spray pipe; 211. an annular water spray nozzle; 221. an inner tube; 222. an outer tube; 2221. a drive motor; 2222. a drive gear; 3. rotating the nozzle; 31. bending the part; 311. a leak-proof gasket; 32. a water jet; 321. a separation net; 33. a high-level water jet; 4. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1:

fig. 1 to 5 illustrate a water spray apparatus of an LNG yard according to the present invention, which includes a water supply passage 1, a water spray pipe 2, and a rotary nozzle 3;

the water supply channel 1 is provided with a water pump 11 and a controller 4, and the water pump 11 is electrically connected with the controller 4;

the water spraying pipe 2 comprises a first water spraying pipe 21 and a second water spraying pipe 22, the second water spraying pipe 22 is arranged above the first water spraying pipe 21, the first water spraying pipe 21 and the second water spraying pipe 22 are coaxial, the first water spraying pipe 21 is provided with an annular water spraying nozzle 211, the second water spraying pipe 22 comprises an inner pipe 221 and an outer pipe 222, the inner wall of the outer pipe 222 is tightly attached to the outer wall of the inner pipe 221, the inner wall of the inner pipe 221 forms a water flow channel, the upper end of the inner pipe 221 and the lower side of the upper end of the outer pipe 222 form an accommodating cavity, the outer pipe 222 is provided with a driving motor 2221 and a driving gear 2222, and the driving gear 2222 is connected to the output end of the driving motor 2221;

the rotary nozzle 3 is rotatably connected to the upper end of the second water spraying pipe 22, the lower end of the rotary nozzle 3 is provided with a bending part 31, the bending part 31 is located in the accommodating cavity, the outer side of the bending part 31 is provided with insections corresponding to the driving gear 2222, the bending part 31 is meshed with the driving gear 2222, and the side wall of the rotary nozzle 3 is provided with a water spraying opening 32.

The lower end of the bent portion 31 is further provided with a leakage-proof gasket 311 to prevent water from leaking into a gap between the lower end of the bent portion 31 and the upper end of the inner tube 221, thereby wetting other structures.

The spout 32 is flat.

The water spray opening 32 is provided with a separation net 321, so that the phenomenon that the station storage tank is damaged by impact due to overlarge water pressure caused by water flow concentration is avoided.

The upper end of the rotary nozzle 3 is also provided with a high-level water spray 33 for spraying water to a high point.

The working principle is as follows:

the controller 4 can reasonably control the starting and output power of the driving motor 2221 and the water pump 11 through the feedback of an external temperature detector and a concentration detector, and regularly control the water pump 11 through the controller 4 when the station yard normally runs, so that water flow is flushed to the annular water spraying nozzle 211 to spray small water drops, the temperature in the station yard is reduced in a wide range, and a fire disaster is prevented; when the external temperature detector feeds back that the excessive temperature is generated, the controller 4 controls the driving motor 2221 to start, the water spraying port 32 is rotated to the corresponding direction through the meshing of the bent part 31 and the driving gear 2222, and simultaneously, the controller 4 controls the water pump 11 to increase the output power, so that the water flow is flushed to the rotating nozzle 3 to spray water to the temperature-increasing position.

Claims

1. The water spraying device of the LNG station is characterized by comprising a controller, a water supply channel, a water spraying pipe and a rotary nozzle;

the water supply channel is provided with a water pump which is electrically connected with the controller;

the water spraying pipes comprise a first water spraying pipe and a second water spraying pipe, the second water spraying pipe is arranged above the first water spraying pipe, the first water spraying pipe and the second water spraying pipe are coaxial, the first water spraying pipe is provided with an annular water spraying nozzle, the second water spraying pipe comprises an inner pipe and an outer pipe, the upper end of the inner pipe and the lower side of the upper end of the outer pipe form an accommodating cavity, the outer pipe is provided with a driving motor and a driving gear, the driving gear is connected to the output end of the driving motor, and the driving motor is electrically connected to the controller;

2. The LNG yard sprinkler of claim 1, wherein the lower end of the bend is further provided with a leak-proof gasket.

3. The LNG yard water injection apparatus of claim 1, wherein the water injection port is flat.

4. The LNG yard sprinkler of claim 1, wherein the sprinkler is provided with a separation net.

5. The LNG yard sprinkler according to claim 1, wherein the upper end of the rotating nozzle is further provided with a high level water jet.