CN209014209U - The leak detection system of cargo tank - Google Patents
The leak detection system of cargo tank Download PDFInfo
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- CN209014209U CN209014209U CN201821994970.8U CN201821994970U CN209014209U CN 209014209 U CN209014209 U CN 209014209U CN 201821994970 U CN201821994970 U CN 201821994970U CN 209014209 U CN209014209 U CN 209014209U
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- cargo tank
- leakage
- leak detection
- detecting sensor
- liquid goods
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Abstract
The utility model relates to a kind of leak detection systems of cargo tank, and due to being passed through gas into insulation cavity from air inlet pipe, air-flow flows to escape pipe by insulation cavity from air inlet pipe；If there is liquid goods leaks into insulation cavity, liquid goods can be evaporate into insulation cavity, and the leakage fluid goods that air-flow can will volatilize drives escape pipe, and the first leakage detecting sensor of escape pipe nozzle will detect the liquid goods of volatilization；If the liquid goods amount of leakage is bigger, the liquid goods not volatilized can be gathered in drip trough and be flowed out by catheter, and the second leakage detecting sensor of catheter nozzle will detect the liquid goods of leakage.When the first leakage detecting sensor or the second leakage detecting sensor detect that liquid goods leaks, will to control system issue signal so that staff can timely learning cargo tank leakage situation has occurred.
Description
Technical field
The utility model relates to a kind of leak detection systems of cargo tank.
Background technique
Liquefied gas ship is used for transport liquefied gases cargo, and the temperature of liquefied gas is very low, if during transportation, liquefaction
Gas occurs leakage and leaks on hull, and the temperature of hull regional area will be made to reduce and influence the structural strength peace of hull
Entirely, for travelling for steamer at sea, this is abnormally dangerous situation.Therefore, it is necessary to handle leakage failure in time, with
Prevent peril, just but liquid goods leakage generally only it is larger to leakage rate when can be observed by staff, in order to
Leakage failure can be handled in time, need to find leakage situation in time.Cargo tank in the prior art cannot detect in time
To leakage failure, processing leakage failure can not be found in time.
Utility model content
In view of the foregoing deficiencies of prior art, the technical problem to be solved by the present invention is to provide a kind of liquid goods
The leak detection system in cabin, can be convenient for detection liquid goods leakage situation, in order to the timely treatment fluid goods leakage failure of staff.
To achieve the above object, the utility model provides a kind of leak detection system of cargo tank, using following technical side
Case: a kind of leak detection system of cargo tank, the cargo tank hull outside are equipped with insulating layer, insulating layer inner wall and cargo tank shell
Form closed insulation cavity between external wall, be connected with air inlet pipe and an air outlet pipe on insulating layer, air inlet pipe and an air outlet pipe with
It insulate cavity connection, the air inlet pipe is used to be passed through gas into insulation cavity, is passed into the gas in insulation cavity from outlet
Pipe outflow is equipped with the first leakage detecting sensor in the nozzle of escape pipe, and first leakage detecting sensor is for detecting vapour
The leakage fluid goods of change；Insulating layer inner wall at cargo tank housing bottom is equipped with liquid collecting pit, is connected with one in liquid collecting pit
Catheter, the nozzle of catheter are equipped with the second leakage detecting sensor, and the second leakage detecting sensor is for detecting from catheter
The liquid goods of outflow.
Preferably, the air inlet pipe is positioned close to the position of cargo tank case top, and the escape pipe is positioned close to
The position of cargo tank housing bottom.
Preferably, the gas that the air inlet pipe is passed through into insulation cavity is nitrogen.
Preferably, first leakage detecting sensor is gas detection sensor.
Preferably, second leakage detecting sensor is temperature detection sensor.
Preferably, first leakage detecting sensor and the second leakage detecting sensor are connect with control system.
Preferably, low temperature valve is connected on the catheter.
Preferably, the upper end of the catheter is concordant with the bottom surface of liquid collecting pit or bottom surface lower than liquid collecting pit.
As described above, the utility model relates to a kind of cargo tank leak detection system, have the advantages that by
In being passed through gas into insulation cavity from air inlet pipe, air-flow flows to escape pipe by insulation cavity from air inlet pipe；If there is liquid goods
It leaks into insulation cavity, liquid goods can be evaporate into insulation cavity, and the leakage fluid goods that air-flow can will volatilize drives escape pipe, outlet
First leakage detecting sensor of pipe nozzle will detect the liquid goods of volatilization；If the liquid goods amount of leakage is bigger, do not wave
The liquid goods of hair can be gathered in drip trough and be flowed out by catheter, and the second leakage detecting sensor of catheter nozzle will
Detect the liquid goods of leakage.When the first leakage detecting sensor or the second leakage detecting sensor detect that liquid goods leaks
When, will to control system issue signal so that staff can timely learning cargo tank leakage situation has occurred.By
This as it can be seen that a kind of cargo tank of the utility model leak detection system, can convenient for detection liquid goods leakage situation, in order to work
Make the timely treatment fluid goods leakage failure of personnel.
Detailed description of the invention
Fig. 1 is shown as a kind of the schematic diagram of the section structure of the leak detection system of cargo tank of the utility model.
Fig. 2 is shown as in Fig. 1 the partial schematic diagram at A.
Fig. 3 is shown as in Fig. 1 the partial schematic diagram at B.
Fig. 4 is shown as in Fig. 1 the partial schematic diagram at C.
Component label instructions
1 liquid storage cavity
2 cargo tank shells
3 insulating layers
4 insulation cavities
5 air inlet pipe
6 escape pipes
7 first leakage detecting sensors
8 liquid collecting pits
9 catheters
10 second leakage detecting sensors
11 low temperature valves
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off
The content shown is not intended to limit the utility model enforceable restriction item so that those skilled in the art understands and reads
Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing
Under the effect of the utility model can be generated and the purpose that can reach, should all still it fall in the revealed technology of the utility model
In the range of Rong get Neng is covered.Meanwhile cited such as "upper", "lower", "left", "right", the use of " centre " in this specification
Language is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness or
Adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
As shown in Figure 1, the cargo tank of liquefied gas carrier is mounted in the independent cabin in liquefied gas carrier hull, cargo tank has
Liquid storage cavity 1 is used for storing liquid goods.The Low Temperature Liquid goods in cargo tank makes the strength reduction of hull plate in order to prevent, in liquid
The outside of cargo hold shell 2 is equipped with insulating layer 3.
As shown in Figures 1 to 4, the utility model provides a kind of leak detection system of cargo tank, the cargo tank shell 2
Outside is equipped with insulating layer 3, forms closed insulation cavity 4 between 2 outer wall of 3 inner wall of insulating layer and cargo tank shell, on insulating layer 3
It is connected with air inlet pipe 5 and escape pipe 6, air inlet pipe 5 and escape pipe 6 are connected to insulation cavity 4, and the air inlet pipe 5 is used for exhausted
It is passed through gas in edge cavity 4, the gas being passed into insulation cavity 4 is flowed out from escape pipe 6, is equipped with the in the nozzle of escape pipe 6
One leakage detecting sensor 7, first leakage detecting sensor 7 are used to detect the leakage fluid goods of vaporization；In cargo tank shell 2
3 inner wall of insulating layer at bottom is equipped with liquid collecting pit 8, is connected with a catheter 9 in liquid collecting pit 8, the nozzle of catheter 9 is set
There is the second leakage detecting sensor 10, the second leakage detecting sensor 10 is used to detect the liquid goods flowed out from catheter 9.
In a kind of leak detection system of cargo tank of the utility model, due to being passed through from air inlet pipe 5 into insulation cavity 4
Gas, air-flow flow to escape pipe 6 by insulation cavity 4 from air inlet pipe 5；If there is liquid goods leaks into insulation cavity 4, liquid goods meeting
It evaporate into insulation cavity 4, the leakage fluid goods that air-flow can will volatilize drives escape pipe 6, the first leak detection of 6 nozzle of escape pipe
Sensor 7 will detect the liquid goods of volatilization；If the liquid goods amount of leakage is bigger, the liquid goods not volatilized can gather liquid collecting
It is flowed out in groove and by catheter 9, the second leakage detecting sensor 10 of 9 nozzle of catheter will detect the liquid of leakage
Goods.It, will be to control when the first leakage detecting sensor 7 or the second leakage detecting sensor 10 detect that liquid goods leaks
System processed issues signal so that staff can timely learning cargo tank leakage situation has occurred.It can be seen that this reality
It, can be convenient for detection liquid goods leakage situation, in order to which staff is timely with a kind of leak detection system of novel cargo tank
Treatment fluid goods leakage failure.
As shown in Figure 1, and will wave in order to enable the gas entered in insulation cavity 4 can swimmingly flow out cargo tank
The liquid goods of hair takes out of from escape pipe 6 and the liquid goods that makes the first leakage detecting sensor 7 be able to detect that leakage, the air inlet pipe
5 are positioned close to the position at 2 top of cargo tank shell, and the escape pipe 6 is positioned close to the position of 2 bottom of cargo tank shell.
In this way, air-flow is basically the state flowed from top to bottom.The gas being passed into insulation cavity 4 should be not easy and liquid goods
The gas to react, generally using sluggish gas as be passed into insulate cavity 4 in gas, it is preferable that it is described into
The gas that tracheae 5 is passed through into insulation cavity 4 is nitrogen.Air inlet pipe 5 and escape pipe 6 can be connected to gas-recycling plant
On, it constantly is flowed into insulation cavity 4 from air inlet pipe 5 using gas-recycling plant driving gas, the pressure in insulation cavity 4
When reaching certain value, gas will be flowed out from escape pipe 6.In this way, when there is liquid goods to leak into insulation cavity 4, due to liquid goods
The characteristic of itself, liquid goods can evaporate into insulation cavity 4 and flow out with air-flow from escape pipe 6 and passed by the first leak detection
Sensor 7 detects, as a preferred embodiment, first leakage detecting sensor 7 is gas detection sensor, the
One leakage detecting sensor 7 is to liquid goods constituent-sensitive, and when containing liquid goods ingredient in air-flow, the first leakage detecting sensor 7 is just
Detection signal can be generated and pass to control system.
In a kind of leak detection system of cargo tank of the utility model, the liquid goods that will volatilize by air-flow takes escape pipe to
Detect that leakage situation, this mode are suitble to detect the lesser situation of liquid goods leakage rate by the first leakage detecting sensor 7 at 6.
When liquid goods leakage rate is larger, the liquid goods of leakage can be pooled in the liquid collecting pit 8 of its i.e. bottom of minimum point of insulation cavity 4,
It is collected in catheter 9 again, the leakage of liquid goods can be detected by being set to the second leakage detecting sensor 10 outside catheter 9.When
When liquid goods leakage rate is larger, liquid goods is in a liquid state, so the liquid goods in catheter 9 is liquid, the liquid goods of liquid has very low
Temperature can detect low as a preferred embodiment, second leakage detecting sensor 10 is temperature sensor
The liquid goods of temperature simultaneously provides signal to control system, also can trigger leakage alarm.When staff recognizes leakage alarm situation, energy
It is enough to handle leakage failure in time.
In a kind of leak detection system of cargo tank of the utility model, the first leakage detecting sensor 7 and second is let out
The case where leak detection sensor 10 is for detecting the leakage of liquid goods, first leakage detecting sensor 7 and the second leak detection pass
Sensor 10 is connect with control system, when liquid goods leaks, the first leakage detecting sensor 7 or the second leak detection sensing
Device 10 is alarmed to control system.
In a kind of leak detection system of cargo tank of the utility model, when liquid goods in liquid collecting pit 8 amount of collecting compared with
When big, the liquid goods for needing to collect, which discharges, to be stored, it is preferable that is connected with low temperature valve 11 on the catheter 9, is worked as liquid collecting
When the liquid goods leaked in pit 8 reaches a certain amount of, low temperature valve 11 opens the liquid storage container that liquid goods is discharged to 3 lower section of insulating layer
It is temporarily stored up in (not shown).For the ease of the liquid goods in liquid collecting pit 8 is discharged, the upper end of the catheter 9 with
The bottom surface of liquid collecting pit 8 is concordant or bottom surface lower than liquid collecting pit 8.
Technical solution based on the above embodiment, a kind of leak detection system of cargo tank of the utility model, Neng Goubian
In detection liquid goods leakage situation, in order to the timely treatment fluid goods leakage failure of staff.
In conclusion the utility model effectively overcomes various shortcoming in the prior art and has high industrial exploitation value
Value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (8)
1. a kind of leak detection system of cargo tank, cargo tank shell (2) outside is equipped with insulating layer (3), in insulating layer (3)
Closed insulation cavity (4) is formed between wall and cargo tank shell (2) outer wall, and air inlet pipe (5) is connected on insulating layer (3) and is gone out
Tracheae (6), air inlet pipe (5) and escape pipe (6) are connected to insulation cavity (4), and the air inlet pipe (5) is used for insulation cavity
(4) gas is passed through in, the gas being passed into insulation cavity (4) is flowed out from escape pipe (6), is equipped in the nozzle of escape pipe (6)
First leakage detecting sensor (7), first leakage detecting sensor (7) are used to detect the leakage fluid goods of vaporization；In liquid goods
Insulating layer (3) inner wall at cabin shell (2) bottom is equipped with liquid collecting pit (8), is connected with a catheter in liquid collecting pit (8)
(9), the nozzle of catheter (9) is equipped with the second leakage detecting sensor (10), and the second leakage detecting sensor (10) is for detecting
The liquid goods flowed out from catheter (9).
2. the leak detection system of cargo tank according to claim 1, it is characterised in that: air inlet pipe (5) setting exists
Position at the top of cargo tank shell (2), the escape pipe (6) are positioned close to the position of cargo tank shell (2) bottom.
3. the leak detection system of cargo tank according to claim 1, it is characterised in that: the air inlet pipe (5) is to insulation
The gas being passed through in cavity (4) is nitrogen.
4. the leak detection system of cargo tank according to claim 1, it is characterised in that: the first leak detection sensing
Device (7) is gas detection sensor.
5. the leak detection system of cargo tank according to claim 1, it is characterised in that: the second leak detection sensing
Device (10) is temperature detection sensor.
6. the leak detection system of cargo tank according to claim 1, it is characterised in that: the first leak detection sensing
Device (7) and the second leakage detecting sensor (10) are connect with control system.
7. the leak detection system of cargo tank according to claim 1, it is characterised in that: connected on the catheter (9)
There are low temperature valve (11).
8. the leak detection system of cargo tank according to claim 1, it is characterised in that: the upper end of the catheter (9)
Bottom surface that is concordant with the bottom surface of liquid collecting pit (8) or being lower than liquid collecting pit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994970.8U CN209014209U (en) | 2018-11-30 | 2018-11-30 | The leak detection system of cargo tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994970.8U CN209014209U (en) | 2018-11-30 | 2018-11-30 | The leak detection system of cargo tank |
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| Publication Number | Publication Date |
|---|---|
| CN209014209U true CN209014209U (en) | 2019-06-21 |
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ID=66843348
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821994970.8U Active CN209014209U (en) | 2018-11-30 | 2018-11-30 | The leak detection system of cargo tank |
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| CN (1) | CN209014209U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111399572A (en) * | 2020-04-01 | 2020-07-10 | 江南造船(集团)有限责任公司 | Environmental control system and method for subsidiary places of B-type liquid cargo tank |
| CN112253998A (en) * | 2020-09-18 | 2021-01-22 | 上海蓝魂环保科技有限公司 | Leakage detection system of LNG sealing system |
| CN112478061A (en) * | 2020-12-08 | 2021-03-12 | 江南造船(集团)有限责任公司 | Leakage liquid cargo guiding device of liquid cargo tank |
| CN117147008A (en) * | 2023-07-31 | 2023-12-01 | 中国船舶集团有限公司第七一三研究所 | Low-temperature sensor health state self-diagnosis method and system |
-
2018
- 2018-11-30 CN CN201821994970.8U patent/CN209014209U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111399572A (en) * | 2020-04-01 | 2020-07-10 | 江南造船(集团)有限责任公司 | Environmental control system and method for subsidiary places of B-type liquid cargo tank |
| CN112253998A (en) * | 2020-09-18 | 2021-01-22 | 上海蓝魂环保科技有限公司 | Leakage detection system of LNG sealing system |
| CN112478061A (en) * | 2020-12-08 | 2021-03-12 | 江南造船(集团)有限责任公司 | Leakage liquid cargo guiding device of liquid cargo tank |
| CN112478061B (en) * | 2020-12-08 | 2021-07-23 | 江南造船(集团)有限责任公司 | Leakage liquid cargo guiding device of liquid cargo tank |
| CN117147008A (en) * | 2023-07-31 | 2023-12-01 | 中国船舶集团有限公司第七一三研究所 | Low-temperature sensor health state self-diagnosis method and system |
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