CN201413223Y - Infrared detecting device for inflammable gas under non-air state - Google Patents
Infrared detecting device for inflammable gas under non-air state Download PDFInfo
- Publication number
- CN201413223Y CN201413223Y CN 200920091731 CN200920091731U CN201413223Y CN 201413223 Y CN201413223 Y CN 201413223Y CN 200920091731 CN200920091731 CN 200920091731 CN 200920091731 U CN200920091731 U CN 200920091731U CN 201413223 Y CN201413223 Y CN 201413223Y
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- China
- Prior art keywords
- connecting pipe
- detecting device
- detector
- infrared detecting
- inflammable gas
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- 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 - Lifetime
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses an infrared detecting device for inflammable gas under non-air state, which comprises a connecting pipe, wherein an upper end opening flange and a lower end opening flangeare arranged on the connecting pipe, screw holes are formed on the upper end opening flange and the lower end opening flange, a connector is arranged on the connecting pipe, and a detector is mountedon the connector; further, the detector adopts an infra-red detector; moreover, the detector is in movable connection with the connecting pipe in a sealing manner. Due to the adoption of a high-performance inflammable gas infrared detecting probe, the infrared detecting device is mounted between a respiration valve and a tube support flange arranged on LNG master and secondary storage tanks, and the detector is in movable connection with the connecting pipe in a sealing manner. The utility model has the function of detecting gas leakage in real-time manner and achieves 24 hour's random detection and remote monitoring on line, the detection cost is reduced greatly, the labor intensity of inspectors is lowered, the safety factor of the LNG master and secondary storage tanks can be increased;and the utility model has the advantages of high sensitivity, small volume, convenient installation and replacement, as well as simple and convenient operation.
Description
Technical field
The utility model relates to a kind of gas-detecting device, relates in particular to the non-air state inflammable gas infrared detecting device that a kind of LNG primary and secondary storage tank is used.
Background technology
Existing liquefied natural gas (LNG) (LNG) storage tank is generally the thermally insulated tank of a thermometal wall, generally form by the one or several height jars (interior jar) in a large-scale mother jar (outer jar) and the female jar, storage is liquefied natural gas (LNG) in the son jar, and the LNG storage tank of this structure is applicable to a large amount of storages of LNG.
General son jar is respectively to be made by low temperature stainless steel and carbon steel with female jar; be filled with medium temperature generally at subzero about 160 ℃ liquefied natural gas (LNG) in the son jar; usually be filled with silica sand (or other adiabatic media) between son jar and the female jar; and will be filled with nitrogen protection (nitrogen pressure is greater than atmospheric pressure) between son jar and the female jar; be used for dry silica sand and constitute heat insulation layer; utilize the relative inertness of nitrogen simultaneously, play certain heat insulating function and protective effect.But LNG primary and secondary storage tank is through using for a long time, and the LNG in son jar and the pipeline might leak outside and promptly leak in the interlayer of primary and secondary storage tank, causes damage.
And whether existing pick-up unit can't accurately and timely detect seepage, conventional transducer all could detect under air condition, under the non-air state, can't work, if the LNG of seepage can not be found timely in the primary and secondary storage tank interlayer, might cause accident to enlarge even generation major disaster incidents.
The utility model content
The utility model is at above-mentioned existing in prior technology deficiency, a kind of non-air state inflammable gas infrared detecting device is provided, it has the function whether detected gas leaks, it is highly sensitive, volume is little, and is simple to operate, convenient, can realize round-the-clock detection in 24 hours, improve the security performance of LNG primary and secondary storage tank.
The technical scheme that the utility model technical solution problem is adopted is:
A kind of non-air state inflammable gas infrared detecting device comprises connecting pipe 3, and connecting pipe 3 is provided with upper port flange 2 and lower port flange 4, on upper port flange 2 and the lower port flange 4 screw 5 is arranged, wherein, connecting pipe 3 is provided with interface 6, and detecting device 1 is housed on the interface 6.
Further, described detecting device 1 is an infrared detector.
Further, described detecting device 1 is connected for movable sealing with connecting pipe 3.
The good effect of technical solutions of the utility model is:
The utility model is owing to adopt high-performance inflammable gas infrared detection probe, and the non-air state inflammable gas infrared detecting device that will adopt high-performance inflammable gas infrared detection probe is installed in the inflow point of female tank top vacuum pressure valve of LNG primary and secondary storage tank, this place is the outlet of confluxing of unnecessary nitrogen, it is the only way which must be passed of nitrogen or the nitrogen that contains inflammable gas, so improved detection sensitivity greatly, greatly reduced the detection cost.
Infrared detecting device of the present utility model is installed in LNG primary and secondary tank top, because nitrogen is heavy, rock gas is light, reveal as the inflammable gas in the fruit jar, finally all can spread come-up and arrive the vacuum pressure valve porch, and detected probe detects, thereby has improved the sensing range and the precision of pick-up unit greatly.
The utility model can carry out infrared detection to inflammable gas under the non-air state, solved the great difficult problem that interior son jar of LNG primary and secondary storage tank interlayer and pipeline leakage do not have effective detection means.
The utility model is installed between the base flange on vacuum pressure valve and the LNG primary and secondary storage tank, detecting device is that movable sealing is connected with connecting pipe, has the function whether detected gas in real time leaks, highly sensitive, volume is little, be convenient to install to change, simple to operation, reduce testing staff's labour intensity, improved the safety coefficient of LNG primary and secondary storage tank.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is a stereographic map of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described further.
By illustrated in figures 1 and 2, this non-air state inflammable gas infrared detecting device, comprise connecting pipe 3, connecting pipe 3 is provided with upper port flange 2 and lower port flange 4, evenly be provided with screw 5 on upper port flange 2 and the lower port flange 4, connecting pipe 3 is provided with interface 6, and detecting device 1 is contained on the connecting pipe 3 by interface 6, and detecting device 1 is an infrared detector.
As shown in Figure 1 and Figure 2, detecting device 1 is provided with inductive probe 7, and inductive probe 7 is positioned at the cavity of connecting pipe 3.
As Fig. 2, shown in Figure 3, during installation, with the inductive probe on the detecting device 17 by the interface 6 on the connecting pipe 3, insert in the cavity of connecting pipe 3, then with the joint seal between interface 6 and the detecting device 1, with iron wire that detecting device 1 is fixing, the lower port flange 4 of connecting pipe 3 and the base flange on the LNG primary and secondary storage tank are by being connected and fixed at screw 5 inward turning connecting bolts, and the upper port flange 2 of connecting pipe 3 and vacuum pressure valve are by being connected and fixed at screw 5 inward turning connecting bolts.
Described connecting pipe 3 also can be installed on LNG primary and secondary tank top and the base that other primary and secondary storage tanks link to each other.
The control module of detecting device 1 can be arranged in the Control Room, is convenient to personnel control's operation.
During work, open non-air state inflammable gas infrared detecting device, inductive probe 7 is uninterruptedly launched infrared ray, LNG seepage in the group jar, the diffusion come-up arrives the vacuum pressure valve porch, and inductive probe 7 will in time detect, and notifies the monitoring personnel with data by control module, the monitoring personnel can carry out concrete work such as maintenance according to data, non-air state inflammable gas infrared detecting device can realize 24 hours round-the-clock online with machine testing and remote monitoring.
Claims (3)
1, a kind of non-air state inflammable gas infrared detecting device, comprise connecting pipe (3), connecting pipe (3) is provided with upper port flange (2) and lower port flange (4), upper port flange (2) and lower port flange (4) are provided with screw (5), it is characterized in that: connecting pipe (3) is provided with interface (6), and interface (6) is provided with detecting device (1).
2, non-air state inflammable gas infrared detecting device according to claim 1, it is characterized in that: described detecting device (1) is an infrared detector.
3, non-air state inflammable gas infrared detecting device according to claim 2, it is characterized in that: described detecting device (1) is connected for movable sealing with connecting pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920091731 CN201413223Y (en) | 2009-06-05 | 2009-06-05 | Infrared detecting device for inflammable gas under non-air state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920091731 CN201413223Y (en) | 2009-06-05 | 2009-06-05 | Infrared detecting device for inflammable gas under non-air state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413223Y true CN201413223Y (en) | 2010-02-24 |
Family
ID=41715106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920091731 Expired - Lifetime CN201413223Y (en) | 2009-06-05 | 2009-06-05 | Infrared detecting device for inflammable gas under non-air state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201413223Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352976A (en) * | 2015-12-15 | 2016-02-24 | 河南省锅炉压力容器安全检测研究院 | Nondestructive testing device and testing method for LNG low-temperature primary-secondary tank |
-
2009
- 2009-06-05 CN CN 200920091731 patent/CN201413223Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352976A (en) * | 2015-12-15 | 2016-02-24 | 河南省锅炉压力容器安全检测研究院 | Nondestructive testing device and testing method for LNG low-temperature primary-secondary tank |
| CN105352976B (en) * | 2015-12-15 | 2019-05-31 | 河南省锅炉压力容器安全检测研究院 | LNG low temperature primary and secondary tank non-destructive testing device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |