CN107096672A - A kind of liquid ammonia storage tank fire-fighting water sprinkler system - Google Patents
A kind of liquid ammonia storage tank fire-fighting water sprinkler system Download PDFInfo
- Publication number
- CN107096672A CN107096672A CN201710449286.5A CN201710449286A CN107096672A CN 107096672 A CN107096672 A CN 107096672A CN 201710449286 A CN201710449286 A CN 201710449286A CN 107096672 A CN107096672 A CN 107096672A
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- CN
- China
- Prior art keywords
- spray
- spraying
- annular
- water
- liquid ammonia
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 126
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000007921 spray Substances 0.000 claims abstract description 100
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 39
- 238000005507 spraying Methods 0.000 claims description 83
- 230000007062 hydrolysis Effects 0.000 claims description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a kind of liquid ammonia storage tank fire-fighting water sprinkler system, including two spray equipments, each spray equipment includes spray water source, ammonia area fire protection pipeline, spray water supply line and ring-type spray piping, spray water source is connected with ammonia area fire protection pipeline water inlet end, ammonia area fire protection pipeline water side is connected with spray water supply line water inlet end, spray water supply line water side is connected with ring-type spray piping, and ring-type spray piping includes circular spray tube and the one group of shower nozzle uniformly installed on circular spray tube；Circular spray tube on one ring-type spray piping is as inner ring shower, and inner ring shower upper nozzle is arranged in above two liquid ammonia storage tank axis；Circular spray tube on another ring-type spray piping is as outer shroud shower, and outer shroud shower upper nozzle is arranged in two liquid ammonia storage tank outer walls and cofferdam middle upper part；Inner ring shower and outer shroud shower are in Back Word type.Beneficial effects of the present invention：Spray region all standing is realized, can be sprayed with subregion, saving water resource.
Description
Technical Field
The invention relates to the technical field of fire fighting, in particular to a fire fighting water spraying system of a liquid ammonia storage tank.
Background
Traditional denitration liquid ammonia storage tank district of thermal power plant establishes one set of water spraying system in every liquid ammonia storage tank top, and the spraying system of whole storage tank district top shares one set of rain shower valve control, and when liquid ammonia leaked, the ammonia gas was detected to the ammonia leakage detector, and when ammonia gas concentration reached protection action value in the air, the regional whole shower nozzles of liquid ammonia storage tank were started and ammonia gas was leaked and is diluted.
The main defects of the prior art are as follows:
1. when a small amount of liquid ammonia leaks, the spraying system of the whole storage tank area is started, no partition is available, and water resources are wasted;
2. fire-fighting spray heads are completely concentrated on the liquid ammonia storage tank, and liquid ammonia which is not diluted in time cannot be completely diluted, so that ammonia is diffused, and the surrounding environment is influenced;
3. the leakage points of the flanges, valves, liquid level meters and meters which are not gathered together can not be completely covered.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a fire-fighting water spraying system for a liquid ammonia storage tank, which can realize the full coverage of a spraying area, can spray in a subarea manner and can save water resources.
The invention provides an ammonia storage tank fire-fighting water spraying system which comprises two spraying devices, wherein each spraying device comprises a spraying water source, an ammonia region fire-fighting pipeline, a spraying water supply pipeline and an annular spraying pipeline, the spraying water source is connected with the water inlet end of the ammonia region fire-fighting pipeline, the water outlet end of the ammonia region fire-fighting pipeline is connected with the water inlet end of the spraying water supply pipeline, the water outlet end of the spraying water supply pipeline is connected with the annular spraying pipeline, and the annular spraying pipeline comprises an annular spraying pipe and a group of spray heads uniformly arranged on the annular spraying pipe;
wherein,
an annular spray pipe on one annular spray pipeline is used as an inner annular spray pipe, and a spray head on the inner annular spray pipe is arranged above the central axes of the two liquid ammonia storage tanks to form an annular arrangement;
the annular spraying pipe on the other annular spraying pipeline is used as an outer annular spraying pipe, and the spray head on the outer annular spraying pipe is arranged above the outer walls of the two liquid ammonia storage tanks and the middle of the cofferdam and is arranged annularly;
the inner ring spraying pipe and the outer ring spraying pipe are in a shape like a Chinese character 'hui'.
As a further improvement of the invention, a filter, a first butterfly valve and a valve component are sequentially arranged on the spray water supply pipeline, and the discharge pipeline is connected on the spray water supply pipeline between the first butterfly valve and the valve component;
wherein, valve member is including the first signal butterfly valve, drench the valve and the second signal butterfly valve that set gradually.
As a further improvement of the invention, a ball valve is arranged on the discharge pipeline.
As a further improvement of the invention, a second butterfly valve is arranged on the fire fighting pipeline of the ammonia area.
As a further improvement of the invention, the fire-fighting water spraying system for the liquid ammonia storage tank further comprises a controller and an ammonia leakage detector, wherein the ammonia leakage detector is arranged on the spraying water supply pipeline, and the ammonia leakage detector and the valve assembly are both electrically connected with the controller.
As a further improvement of the invention, the directions of the spray heads arranged on the inner ring spray pipes are different, and the included angle between the spray heads facing the outer wall of the urea hydrolysis tank and the annular surface of the annular spray pipe is 0-90 degrees.
As a further improvement of the invention, the angle difference between adjacent spray heads on the inner ring spray pipe is 3-10 degrees.
As a further improvement of the invention, the directions of the spray heads arranged on the outer ring spray pipes are different, and the included angle between the spray head facing the outer wall of the urea hydrolysis tank and the annular surface of the annular spray pipe is 0-90 degrees.
As a further improvement of the invention, the angle difference between adjacent spray heads on the outer ring spray pipe is 3-10 degrees.
The invention has the beneficial effects that:
1. the ammonia area spraying system is partitioned into an inner ring spraying pipe and an outer ring spraying pipe, the inner ring spraying pipe mainly plays a role in preventing liquid ammonia from leaking and diluting, the outer ring spraying pipe mainly plays a role in preventing liquid ammonia from leaking and diffusing, the inner ring or the outer ring is correspondingly opened according to the area needing spraying, and water resources are not wasted;
2. for ammonia which is not diluted in time, the outer ring is opened for spraying, so that the ammonia can be diluted again, and the ammonia is prevented from diffusing;
3. fully covering fire water spray in the liquid ammonia storage tank area;
4. the device can be remotely controlled, and operation of operators on site is not needed, so that personal injury easily caused by direct contact of ammonia gas is avoided;
5. the ammonia leakage can explode when the concentration in the air reaches a certain value, the ammonia leakage in the air can be detected, and dangerous conditions such as explosion are avoided.
Drawings
FIG. 1 is a schematic structural diagram of a fire-fighting water spraying system of a liquid ammonia storage tank according to an embodiment of the invention;
fig. 2 is a schematic layout of the inner ring of showers and the outer ring of showers of fig. 1.
In the figure:
1. spraying a water source; 2. an ammonia zone fire pipeline; 3. a spray water supply pipeline; 4. a discharge conduit; 5. an annular spray pipe; 6. a spray head; 7. a filter; 8. a first butterfly valve; 9. a valve assembly; 10. a first signal butterfly valve; 11. a deluge valve; 12. a second signal butterfly valve; 13. a second butterfly valve; 14. a ball valve; 15. an inner ring spray pipe; 16. and an outer ring of spray pipes.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in fig. 1, the fire-fighting water spraying system for the liquid ammonia storage tank according to the embodiment of the invention includes two spraying devices, each spraying device includes a spraying water source 1, an ammonia region fire-fighting pipeline 2, a spraying water supply pipeline 3 and an annular spraying pipeline 5, the spraying water source 1 is connected with a water inlet end of the ammonia region fire-fighting pipeline 2, a water outlet end of the ammonia region fire-fighting pipeline 2 is connected with a water inlet end of the spraying water supply pipeline 3, a water outlet end of the spraying water supply pipeline 3 is connected with the annular spraying pipeline 5, and the annular spraying pipeline 5 includes an annular spraying pipe and a group of spray heads 6 uniformly installed on the annular spraying pipe.
As shown in fig. 2, an annular spray pipe on one annular spray pipe 5 is used as an inner annular spray pipe 15, and the spray heads 6 on the inner annular spray pipe 15 are arranged above the central axes of the two liquid ammonia storage tanks and form an annular arrangement; the annular spraying pipe on the other annular spraying pipe 5 is used as an outer annular spraying pipe 16, and the spray head 6 on the outer annular spraying pipe 16 is arranged above the outer walls of the two liquid ammonia storage tanks and the middle of the cofferdam and is arranged annularly; the inner ring spray pipe 15 and the outer ring spray pipe 16 are in a shape of Chinese character 'hui'.
The spraying water supply pipeline 3 is sequentially provided with a filter 7, a first butterfly valve 8 and a valve assembly 9, and the spraying water supply pipeline 3 between the first butterfly valve 8 and the valve assembly 9 is connected with a discharge pipeline 4. Wherein, the valve assembly 9 comprises a first signal butterfly valve 10, a deluge valve 11 and a second signal butterfly valve 12 which are arranged in sequence. A ball valve 14 is arranged on the discharge pipeline 4, and a second butterfly valve 13 is arranged on the ammonia area fire fighting pipeline 2.
Further, liquid ammonia storage tank fire water spraying system still includes controller and hourglass ammonia detector, leaks the ammonia detector and installs on spraying water supply pipe 3, leaks ammonia detector and valve member 9 and all with controller electric connection. Through the setting of the controller, the opening and closing of the first signal butterfly valve 10, the deluge valve 11 and the second signal butterfly valve 12 can be controlled remotely. The ammonia leakage detector can realize ammonia leakage detection in the whole hydrolysis area, avoid danger caused by leakage detection, and once ammonia leakage is detected, the spraying system can be started to spray.
Preceding signal butterfly valve (first signal butterfly valve 10) is that control spraying system intakes, overhauls and cuts off effects such as water source, specifically includes: when the spraying system needs to be maintained, the butterfly valve is closed, the tail end of the butterfly valve is opened to drain water, and water in the spraying system of the floor is emptied for maintenance; the spray system is not allowed to be water-free, when the butterfly valve is closed, a signal is transmitted to the controller, and the controller receives a monitoring signal to prompt that the fire-fighting spray system is in a water-free state and needs to be maintained quickly. The latter signal butterfly valve (second signal butterfly valve 12) is mainly to prevent the maloperation on the one hand, on the other hand, when the deluge valve 11 needs to be maintained, it can be closed to prevent the water loss of the pipe network.
The deluge valve 11 is an automatic water supply control valve, the opening and closing of which is controlled by a controller, and the valve flap of which can be opened electrically, mechanically or otherwise.
The signal butterfly valve is opened, closed and flow controlled by the rotation of the rotating shaft and the butterfly plate driven by the worm gear and worm transmission device. And a hand wheel of the worm gear transmission device is rotated to enable the butterfly plate to achieve the purposes of opening and closing and flow regulation, and the hand wheel rotates clockwise to close the valve. This worm gear transmission sets up micro-gap switch in the box, can set up through two kinds of modes: (1) the transmission device box is internally provided with two micro switches in opening and closing directions, and the micro switches respectively act when the valve is fully opened and closed to switch on the corresponding valve opening and valve closing indicating lamp sources of the controller, so that the opening and closing states of the valve can be accurately displayed on the controller; (2) a closing microswitch (the full-closed position of the butterfly plate is 0 degree) is arranged in the box body of the transmission device, the microswitch is opened when the butterfly plate is at the position of 0 degree to 40 degrees to output a valve closing signal, and the microswitch is closed when the butterfly plate is at the position of 40 degrees to 90 degrees to output a valve opening signal.
Furthermore, the directions of the spray heads 6 arranged on the inner ring spray pipes 15 are different, and the spray heads 6 face the outer wall of the urea hydrolysis tank and form an included angle of 0-90 degrees with the annular surface of the annular spray pipes. The spray heads 6 arranged on the outer ring spray pipes 16 have different directions, and the spray heads 6 face the outer wall of the urea hydrolysis tank and form an included angle of 0-90 degrees with the ring-shaped surface of the ring-shaped spray pipes. In the specific design, in order to make the spraying area more comprehensive, the angle difference between adjacent nozzles 6 on the inner ring spray pipe 15 is 3 ° -10 ° (for example, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 °, 10 °, etc.), the angle difference between adjacent nozzles 6 on the outer ring spray pipe 16 is 3 ° -10 ° (for example, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 °, 10 °, etc.), and the angle difference can be designed according to the number of specifically arranged nozzles. The ammonia leaks and can explode when concentration reaches a definite value in the air, can spray each regional every point of spraying to the cross arrangement of equidirectional shower nozzle on inner ring shower and the outer ring shower, realizes spraying regional coverage for the area of coverage that sprays is wider, dilutes the ammonia more thoroughly.
When the liquid ammonia leakage and dilution preventing device is used specifically, the inner ring (inner ring spraying pipe) of the return-shaped type mainly plays a role in preventing liquid ammonia from leaking and diluting, and the outer ring (outer ring spraying pipe) of the return-shaped type mainly plays a role in preventing liquid ammonia from leaking and diffusing. When a small amount of liquid ammonia leaks, the inner ring spraying pipe is started to spray, so that ammonia gas is effectively diluted; when a large amount of liquid ammonia leaks, start inner ring shower and outer loop shower and spray, when liquid ammonia obtains effective dilution, prevent that undiluted liquid ammonia from leaking the diffusion.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The fire-fighting water spraying system for the liquid ammonia storage tank is characterized by comprising two spraying devices, wherein each spraying device comprises a spraying water source (1), an ammonia area fire-fighting pipeline (2), a spraying water supply pipeline (3) and an annular spraying pipeline (5), the spraying water source (1) is connected with the water inlet end of the ammonia area fire-fighting pipeline (2), the water outlet end of the ammonia area fire-fighting pipeline (2) is connected with the water inlet end of the spraying water supply pipeline (3), the water outlet end of the spraying water supply pipeline (3) is connected with the annular spraying pipeline (5), and the annular spraying pipeline (5) comprises an annular spraying pipe and a group of spray heads (6) uniformly arranged on the annular spraying pipe;
wherein,
an annular spray pipe on one annular spray pipeline (5) is used as an inner annular spray pipe (15), and spray heads (6) on the inner annular spray pipe (15) are arranged above the central axes of the two liquid ammonia storage tanks and are arranged annularly;
an annular spray pipe on the other annular spray pipe (5) is used as an outer annular spray pipe (16), and a spray head (6) on the outer annular spray pipe (16) is arranged above the outer walls of the two liquid ammonia storage tanks and the middle of the cofferdam and is arranged annularly;
the inner ring spray pipe (15) and the outer ring spray pipe (16) are in a shape of Chinese character 'hui'.
2. A fire water spraying system for a liquid ammonia storage tank according to claim 1, wherein a filter (7), a first butterfly valve (8) and a valve assembly (9) are sequentially arranged on the spray water supply pipeline (3), and the discharge pipeline (4) is connected to the spray water supply pipeline (3) between the first butterfly valve (8) and the valve assembly (9);
wherein, valve member (9) are including first signal butterfly valve (10), deluge valve (11) and second signal butterfly valve (12) that set gradually.
3. A fire water sprinkler system for a liquid ammonia tank according to claim 2, characterized in that a ball valve (14) is provided on the discharge pipe (4).
4. A fire water sprinkler system for a liquid ammonia tank according to claim 1, characterized in that a second butterfly valve (13) is arranged on the fire fighting pipe (2) in the ammonia area.
5. A liquid ammonia storage tank fire water spraying system according to claim 1 or 2, further comprising a controller and an ammonia leakage detector, wherein the ammonia leakage detector is mounted on the spray water supply pipeline (3), and the ammonia leakage detector and the valve assembly (9) are both electrically connected to the controller.
6. A fire-fighting water spray system for a liquid ammonia storage tank according to claim 1, wherein the nozzles (6) mounted on the inner annular spray pipes (15) have different directions, and the nozzles (6) face the outer wall of the urea hydrolysis tank and form an angle of 0-90 ° with the annular surface of the annular spray pipes.
7. A liquid ammonia storage tank fire water sprinkler system according to claim 6, characterized in that the angle difference of adjacent spray heads (6) on the inner ring of spray pipes (15) is 3 ° -10 °.
8. A fire-fighting water spray system for a liquid ammonia storage tank according to claim 1, wherein the spray heads (6) mounted on the outer annular spray pipes (16) are all oriented in different directions, and the angle between the spray heads (6) facing the outer wall of the urea hydrolysis tank and the annular surface of the annular spray pipes is 0-90 °.
9. A liquid ammonia storage tank fire water sprinkler system according to claim 8, characterized in that the angle difference between adjacent spray heads (6) on the outer annular spray pipe (16) is 3 ° -10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449286.5A CN107096672A (en) | 2017-06-14 | 2017-06-14 | A kind of liquid ammonia storage tank fire-fighting water sprinkler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449286.5A CN107096672A (en) | 2017-06-14 | 2017-06-14 | A kind of liquid ammonia storage tank fire-fighting water sprinkler system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107096672A true CN107096672A (en) | 2017-08-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710449286.5A Pending CN107096672A (en) | 2017-06-14 | 2017-06-14 | A kind of liquid ammonia storage tank fire-fighting water sprinkler system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107096672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899363A (en) * | 2017-12-22 | 2018-04-13 | 中国安全生产科学研究院 | A kind of method of water spray absorption emergency disposal liquid ammonia storage tank leakage ammonia |
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| CN206881984U (en) * | 2017-06-14 | 2018-01-16 | 大唐环境产业集团股份有限公司 | A kind of liquid ammonia storage tank fire-fighting water sprinkler system |
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2017
- 2017-06-14 CN CN201710449286.5A patent/CN107096672A/en active Pending
Patent Citations (6)
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| CN206881984U (en) * | 2017-06-14 | 2018-01-16 | 大唐环境产业集团股份有限公司 | A kind of liquid ammonia storage tank fire-fighting water sprinkler system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107899363A (en) * | 2017-12-22 | 2018-04-13 | 中国安全生产科学研究院 | A kind of method of water spray absorption emergency disposal liquid ammonia storage tank leakage ammonia |
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| PB01 | Publication | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yinshun Inventor after: Xu Yan Inventor after: Sun Ye Inventor after: Zhu Jun Inventor after: Sun Jian Inventor after: Qi Yunfang Inventor after: Cheng Gao Inventor after: Zhang Cuican Inventor after: Li Wenlong Inventor after: Yang Chunyu Inventor after: Cai Yadong Inventor after: Cao Dong Inventor after: Xia Shuang Inventor after: Li Wen Inventor after: Sun Diemin Inventor before: Zhang Cuican Inventor before: Yang Chunyu Inventor before: Li Wenlong Inventor before: Cai Yadong Inventor before: Sun Jian Inventor before: Wang Zhigang Inventor before: Sun Ye Inventor before: Zhu Jun Inventor before: Cheng Gao |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170829 |