CN208003286U - A kind of froth fire extinguishing system of liquefied natural gas - Google Patents
A kind of froth fire extinguishing system of liquefied natural gas Download PDFInfo
- Publication number
- CN208003286U CN208003286U CN201820134766.2U CN201820134766U CN208003286U CN 208003286 U CN208003286 U CN 208003286U CN 201820134766 U CN201820134766 U CN 201820134766U CN 208003286 U CN208003286 U CN 208003286U
- Authority
- CN
- China
- Prior art keywords
- collecting tank
- natural gas
- liquefied natural
- sliding
- bubble jet
- 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.)
- Expired - Fee Related
Links
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 40
- 239000006260 foam Substances 0.000 claims abstract description 50
- 239000007921 spray Substances 0.000 claims description 5
- 239000011796 hollow space material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Abstract
The utility model discloses a kind of froth fire extinguishing systems of liquefied natural gas, belong to liquefied natural gas leakage protection technique field.It is intended to provide a kind of froth fire extinguishing system of the quickly liquefied natural gas by foam coverage in liquid collecting pool surface, its key points of the technical solution are that the liquefaction tracheae including collecting tank, connection collecting tank and storage tank, bubble jet shower pipe is equipped between the opposite both sides of the collecting tank, foam maker is connected on bubble jet shower pipe one end, bubble jet shower pipe is equipped with the driving device that driving bubble jet shower pipe slides back and forth on collecting tank backwards to foam maker one end.By the way that the bubble jet shower pipe slid back and forth on collecting tank is arranged, so that the foam distribution of liquid collecting pool surface is more uniform, and the speed of the foam of liquid collecting pool surface covering is faster.
Description
Technical field
The utility model is related to liquefied natural gas leakage protection technique field, more particularly to a kind of foams of liquefied natural gas
Fire extinguishing system.
Background technology
Liquefied natural gas has become one of the main air source that can not use pipe natural gas cities and towns at present, is also commonly used for big-and-middle
The emergency peak regulation air source in type city.Liquefied natural gas yard stores a large amount of liquefied natural gas, and storage tank or liquid pipe are once
It leaks, the liquefied natural gas of leakage by Quick-gasifying and is spread.Since liquefied natural gas steam cloud temperature is low, in steam cloud
A large amount of condensed steams are swept along, density ratio air is big, and liquefied natural gas steam cloud is caused to be not easy to spread, easily in liquefaction day
Near right gas leakage point large-scale imflammable gas accumulation regions are formed on ground.Once meeting open fire to light, scintillation, pond will be generated
The major accidents such as fire even explosion, great danger is caused to the security of the lives and property of liquefied natural gas yard and its surrounding people
Evil.
In the current design of liquefied natural gas yard both at home and abroad is put into practice with operation management, for On Lng Leakage accident
Under emergency disposal facility and measure, be typically employed in around storage tank setting and retain cofferdam or collecting tank, will leakage liquefaction it is natural
Gas is retained in cofferdam or collecting tank, then is covered on liquefied natural gas liquid pool with high expansion foam, to slow down liquefied natural gas
Evaporation rate reduces combustible vapor cloud diffusion area.Also there is only a few liquefied natural gas yard using devices such as water curtains to stop
The dispersal direction of combustible vapor cloud, and accelerate by water impact the dilution rate of combustible vapor cloud.
Currently, being to blow to the foam that foam maker generates in collecting tank by using wind turbine, but use this side
Formula covering collecting tank superficial velocity is slow, and covering is uneven, still may will produce liquefied natural gas leakage.
Utility model content
The purpose of this utility model is to provide a kind of froth fire extinguishing system of liquefied natural gas, has and quickly covers foam
It covers the liquid collecting pool surface the advantages of.
The above-mentioned technical purpose of the utility model technical scheme is that：
A kind of froth fire extinguishing system of liquefied natural gas, including collecting tank, the liquefaction tracheae for being connected to collecting tank and storage tank, institute
It states and is equipped with bubble jet shower pipe between the opposite both sides of collecting tank, bubble jet shower pipe is connected to foam maker, foam spray on one end
Pipe is equipped with the driving device that driving bubble jet shower pipe slides back and forth on collecting tank backwards to foam maker one end.
By using above-mentioned technical proposal, the foam that foam maker generates is filled in bubble jet shower pipe, and from bubble jet
Shower pipe is ejected into collecting tank, and driving device driving bubble jet shower pipe slides back and forth on collecting tank, is quickly and evenly sprayed at
In collecting tank.
Further setting：The collecting tank is equipped with the first sliding rail being vacantly arranged backwards to foam maker side, the
One sliding rail upper surface is equipped with rack-track, and the first sliding rail both ends are equipped with removable link block, the first sliding rail
Road is fixedly connected by the link block at both ends with collecting tank side, and bubble jet shower pipe is equipped with sliding backwards to foam maker one end
Plate, sliding plate include two blocks of orthogonal side plates, and one of side plate is fixedly connected with bubble jet shower pipe, and another block of side plate is worn
The hollow space below the first sliding rail is crossed, and is contradicted with the first sliding rail lower surface, drive is installed on other end side plate
The output shaft of dynamic motor, driving motor is equipped with driving gear, driving wheel and rack track engagement.
By using above-mentioned technical proposal, it is located at side plate and the first sliding rail below the first sliding rail and contradicts, drive
Moving gear is engaged with rack-track, can drive bubble jet shower pipe along collecting tank surface sliding in this way, to which foam to be sprayed onto
In collecting tank.
Further setting：First sliding rail lower surface is equipped with the first slippage slot, is located at below the first sliding rail
Side plate be equipped with the first slippage slot coordinate first slide lath.
By using above-mentioned technical proposal, the first sliding lath is embedded in the first slippage slot, and such sliding plate is in sliding
More stablize, the sliding path of sliding plate can also be limited, prevents from generating offset when its sliding.
Further setting：The bubble jet shower pipe is equipped with sliding block towards foam maker one end, and sliding block bottom surface is equipped with second
Lath is slid, collecting tank is equipped with the second sliding rail towards foam maker side, and the second sliding rail is equipped with to be slided with second
Move the second slippage slot of lath cooperation.
By using above-mentioned technical proposal, the second sliding lath is embedded in the first slippage slot, so that bubble jet shower pipe
There is limit at both ends so that bubble jet shower pipe is more stablized in sliding.
Further setting：Side plate both sides below the first sliding rail are equipped with alignment sensor, alignment sensor
It is respectively facing corresponding link block.
By using above-mentioned technical proposal, when bubble jet shower pipe slides onto collecting tank to side, the positioning on side plate passes
Sensor touches corresponding link block, and reverse signal is sent out to driving motor, and driving motor driving bubble jet shower pipe back slides,
In this way so that bubble jet shower pipe back and forth slides so that liquid collecting pool surface is covered with foam.
Further setting：Explosion-proof submerged dredge pump is equipped in the collecting tank.
By using above-mentioned technical proposal, the rainwater in collecting tank is extracted discharge, slot milling by explosion-proof submerged dredge pump
Store liquefied natural gas.
Further setting：The driving motor uses fire-proof motor.
By using above-mentioned technical proposal, fire-proof motor generates electric spark when can be run to avoid driving motor so that whole
Body device operation is more stablized.
Further setting：The liquefaction tracheal strips are equipped with the low temperature detection alarm for controlling explosion-proof submerged dredge pump start and stop
Device.
By using above-mentioned technical proposal, low temperature detecting alarm detects that liquefaction tracheal strips have On Lng Leakage
When, start warning function, and close explosion-proof submerged dredge pump.
In conclusion the utility model has the advantages that：
1, by the way that the bubble jet shower pipe slid back and forth on collecting tank is arranged, so that the foam of liquid collecting pool surface is distributed
More uniformly, the speed for the foam that liquid collecting pool surface covers is faster；
2, the system safety and stability, is quick on the draw, and can effectively ensure that the safety in LNG plant.
Description of the drawings
Fig. 1 is the overall structure diagram of froth fire extinguishing system in embodiment；
Fig. 2 is the structural schematic diagram of collecting tank in embodiment；
Fig. 3 is the structural schematic diagram that display drive apparatus is used in embodiment；
Fig. 4 is the part A enlarged drawing of Fig. 2 in embodiment.
In figure, 1, storage tank；2, collecting tank；21, the first sliding rail；22, rack-track；23, link block；24, sliding plate；
25, the second sliding rail；26, the second slippage slot；3, liquefy tracheae；4, foam maker；5, driving device；51, driving motor；
52, the first sliding lath；53, the first slippage slot；54, gear is driven；6, bubble jet shower pipe；7, sliding block；71, the second sliding plate
Item；8, alignment sensor；9, explosion-proof submerged dredge pump.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment：A kind of froth fire extinguishing system of liquefied natural gas, as shown in Figure 1, including collecting tank 2, connection collecting tank 2
With the liquefaction tracheae 3 of storage tank 1, collecting tank 2 is 25m2Square.Bubble jet shower pipe 6 is equipped between about 2 both sides of collecting tank,
6 one end of bubble jet shower pipe is connected to foam maker 4, is connected to by moccasin pipe between foam maker 4 and bubble jet shower pipe 6.Bubble
Foam spray tube 6 is equipped with the driving device that driving bubble jet shower pipe 6 slides back and forth on collecting tank 2 backwards to 4 one end of foam maker
5.It is passed through in bubble jet shower pipe 6 so that foam maker 4 generates foam, driving device 5 drives bubble jet shower pipe 6 collecting
Spraying foam is slid on liquid pool 2, so that 2 surface of collecting tank can quickly be covered with foam, and evenly.
As shown in Figures 2 and 3, collecting tank 2 is backwards to foam maker 4（Referring to Fig. 1）Side is equipped with first be vacantly arranged and slides
Track 21 is moved, 21 surface of the first sliding rail is equipped with the rack-track 22 being arranged along 24 track length direction of the first sliding plate.The
One sliding rail, 21 both ends are equipped with removable link block 23, and the first sliding rail 21 passes through the link block 23 at both ends and liquid collecting
2 side of pond is fixedly connected.Bubble jet shower pipe 6 is backwards to foam maker 4（Referring to Fig. 1）One end is equipped with sliding plate 24, sliding plate 24
Including two blocks of orthogonal side plates, one of side plate is vertically arranged and is fixedly connected with bubble jet shower pipe 6.Another block of side plate
It is horizontally disposed, and contradicted across the hollow space of 21 lower section of the first sliding rail, the side plate and 21 lower surface of the first sliding rail,
It is equipped with driving motor 51 backwards to vertical side plate side on horizontally disposed side plate, driving motor 51 uses explosion-proof servo motor.
The output shaft of driving motor 51 is equipped with driving gear 54, and driving gear 54 is engaged with rack-track 22.Drive gear 54 and water
The first sliding rail 21 of clamping, driving motor 51 drive driving gear 54 to rotate to the side plate of flat setting jointly, driving gear 54 with
Rack-track 22 engages, and can drive bubble jet shower pipe 6 along 2 surface sliding of collecting tank in this way, to which foam is sprayed onto liquid collecting
In pond 2.
As shown in figure 3,21 lower surface of the first sliding rail is equipped with the first slippage slot 53, it is located at 21 lower section of the first sliding rail
Side plate be equipped with the first slippage slot 53 coordinate first slide lath 52.First sliding lath 52 is embedded in the first slippage slot 53
It is interior, so that sliding plate 24 is more stablized in sliding, its sliding path is also avoided to generate offset.
As shown in figure 4, bubble jet shower pipe 6 is towards foam maker 4（Referring to Fig. 1）One end is equipped with sliding block 7,7 bottom surface of sliding block
Equipped with the second sliding lath 71, collecting tank 2 is equipped with the second sliding rail 25, the second sliding rail towards 4 side of foam maker
25 are equipped with the second slippage slot 26 coordinated for the second sliding lath 71.Second sliding lath 71 is embedded in the second slippage slot 26
It is interior, so that 6 both ends of bubble jet shower pipe are all limited so that the sliding of bubble jet shower pipe 6 is more stablized.
As shown in figure 3, when bubble jet shower pipe 6 slides onto collecting tank 2 to side, the alignment sensor 8 on side plate is touched
To corresponding link block 23, reverse signal is sent out to driving motor 51, driving motor 51 drives bubble jet shower pipe 6 back to slide,
Make bubble jet shower pipe 6 toward polyslip in this way so that 2 surface of collecting tank is covered with foam.
As shown in Figure 1, being equipped with explosion-proof submerged dredge pump 9 in collecting tank 2, explosion-proof submerged dredge pump 9 extracts in collecting tank 2
Rainwater, slot milling hold liquefied natural gas.
As shown in Figure 1, being equipped with the low temperature detection alarm of the start and stop for controlling explosion-proof submerged dredge pump 9 in liquefaction tracheae 3
Device.When having the liquefied natural gas of leakage in the tracheae 3 that liquefies, low temperature detecting alarm detects liquefied natural gas, sends out alarm,
And send out stopping signal to explosion-proof submerged dredge pump 9.
Specific implementation process：When the On Lng Leakage in storage tank 1, liquefied natural gas flow to collection with liquefaction tracheae 3
In liquid pool 2, low temperature detecting alarm detects the liquefied natural gas of leakage at this time, and sends out shutdown to explosion-proof submerged dredge pump 9
Signal, while starting foam producer and occurring to be filled with foam in spray tube to foam, driving device 5 drives in bubble jet shower pipe 6
Foam is sprayed into collecting tank 2.
The above embodiments are only the explanation to the utility model, are not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but
As long as all being protected by Patent Law in the right of the utility model.
Claims (8)
1. a kind of froth fire extinguishing system of liquefied natural gas, including collecting tank（2）, connection collecting tank（2）With storage tank（1）Liquefaction
Tracheae（3）, it is characterised in that：The collecting tank（2）Bubble jet shower pipe is equipped between opposite both sides（6）, bubble jet shower pipe（6）
Foam maker is connected on one end（4）, bubble jet shower pipe（6）Backwards to foam maker（4）One end is equipped with driving bubble jet shower pipe
（6）In collecting tank（2）On the driving device that slides back and forth（5）.
2. a kind of froth fire extinguishing system of liquefied natural gas according to claim 1, it is characterised in that：The collecting tank
（2）Backwards to foam maker（4）Side is equipped with the first sliding rail being vacantly arranged（21）, the first sliding rail（21）Upper surface
Equipped with rack-track（22）, the first sliding rail（21）Both ends are equipped with removable link block（23）, the first sliding rail
（21）Pass through the link block at both ends（23）With collecting tank（2）Side is fixedly connected, bubble jet shower pipe（6）Backwards to foam maker
（4）One end is equipped with sliding plate（24）, sliding plate（24）Including two blocks of orthogonal side plates, one of side plate and foam spray
Pipe（6）It is fixedly connected, another block of side plate passes through the first sliding rail（21）The hollow space of lower section, and with the first sliding rail
（21）Lower surface contradicts, and driving motor is installed on other end side plate（51）, driving motor（51）Output shaft be equipped with driving
Gear（54）, drive gear（54）With rack-track（22）Engagement.
3. a kind of froth fire extinguishing system of liquefied natural gas according to claim 2, it is characterised in that：First sliding
Track（21）Lower surface is equipped with the first slippage slot（53）, it is located at the first sliding rail（21）The side plate of lower section is equipped with to be slided with first
Move slot（53）First sliding lath of cooperation（52）.
4. a kind of froth fire extinguishing system of liquefied natural gas according to claim 2, it is characterised in that：The foam spray
Pipe（6）Towards foam maker（4）One end is equipped with sliding block（7）, sliding block（7）Bottom surface is equipped with the second sliding lath（71）, collecting tank
（2）Towards foam maker（4）Side is equipped with the second sliding rail（25）, the second sliding rail（25）It is equipped with and the second sliding
Lath（71）Second slippage slot of cooperation（26）.
5. a kind of froth fire extinguishing system of liquefied natural gas according to claim 2, it is characterised in that：Positioned at the first sliding
Track（21）The side plate both sides of lower section are equipped with alignment sensor（8）, alignment sensor（8）It is respectively facing corresponding link block
（23）.
6. a kind of froth fire extinguishing system of liquefied natural gas according to claim 1, it is characterised in that：The collecting tank
（2）It is interior to be equipped with explosion-proof submerged dredge pump（9）.
7. a kind of froth fire extinguishing system of liquefied natural gas according to claim 2, it is characterised in that：The driving motor
（51）Using fire-proof motor.
8. a kind of froth fire extinguishing system of liquefied natural gas according to claim 6, it is characterised in that：The liquefaction tracheae
（3）It is interior to be equipped with for controlling explosion-proof submerged dredge pump（9）The low temperature detecting alarm of start and stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820134766.2U CN208003286U (en) | 2018-01-25 | 2018-01-25 | A kind of froth fire extinguishing system of liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820134766.2U CN208003286U (en) | 2018-01-25 | 2018-01-25 | A kind of froth fire extinguishing system of liquefied natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208003286U true CN208003286U (en) | 2018-10-26 |
Family
ID=63883401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820134766.2U Expired - Fee Related CN208003286U (en) | 2018-01-25 | 2018-01-25 | A kind of froth fire extinguishing system of liquefied natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208003286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516501A (en) * | 2020-12-10 | 2021-03-19 | 漳州大一智能装备有限公司 | Suspension type fire-fighting robot |
-
2018
- 2018-01-25 CN CN201820134766.2U patent/CN208003286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516501A (en) * | 2020-12-10 | 2021-03-19 | 漳州大一智能装备有限公司 | Suspension type fire-fighting robot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |