CN204213620U - A kind of three level security devices of LNG gas station - Google Patents
A kind of three level security devices of LNG gas station Download PDFInfo
- Publication number
- CN204213620U CN204213620U CN201420655435.5U CN201420655435U CN204213620U CN 204213620 U CN204213620 U CN 204213620U CN 201420655435 U CN201420655435 U CN 201420655435U CN 204213620 U CN204213620 U CN 204213620U
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- pressure release
- branch road
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- pressure
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Abstract
The utility model discloses a kind of three level security devices of LNG gas station, it comprises storage tank, wherein, storage tank is provided with pressure release main line, pressure release main line is provided with a pressure inductor, pressure release main line is provided with the first pressure release branch road, the second pressure release branch road and the 3rd pressure release branch road, first pressure release branch road is provided with self-acting valve, second pressure release branch road is provided with safety valve group, 3rd pressure release branch road is provided with stop valve, and all emptying with one pipeline of self-acting valve, safety valve group, stop valve is connected; Pressure inductor, self-acting valve all with a programmable controller connection.Three pressure release threshold values increased in turn are pre-set in programmable controller, when the force value in storage tank exceedes corresponding pressure release threshold values, programmable controller can control corresponding valve successively and carry out pressure release, improve the Safety Redundancy of whole LNG gas station, enhance the Security that LNG gas station runs, potential safety hazard is eliminated among rudiment.
Description
Technical field
The utility model relates to a kind of three level security devices of LNG gas station.
Background technique
When current energy source is day by day nervous, huge, clean, the efficient rock gas of reserves has become the energy most with prospects after oil and industrial chemicals.LNG liquid addition station is for storing the minimum unit selling the LNG energy.
The main technique medium of LNG gas station is the LNG of low-temp low-pressure, LNG is once expansion of acutely gasifying of being heated, in limited space, its pressure can be made to increase rapidly by thermal evaporation expansion, if do not take rapidly pressure-relief measure to cause security incident, even easily cause blast, bring massive losses to LNG operator, threaten staff's life safety.
Model utility content
In view of above-mentioned the deficiencies in the prior art, three level security devices of a kind of LNG gas station that the utility model provides, to improve the Security that LNG gas station runs.
For solving the problems of the technologies described above, the utility model scheme comprises:
A kind of three level security devices of LNG gas station, it comprises storage tank, wherein, storage tank is provided with pressure release main line, pressure release main line is provided with a pressure inductor, pressure release main line is provided with the first pressure release branch road, the second pressure release branch road and the 3rd pressure release branch road, first pressure release branch road is provided with self-acting valve, second pressure release branch road is provided with safety valve group, the 3rd pressure release branch road is provided with stop valve, all emptying with one pipeline of self-acting valve, safety valve group, stop valve is connected; Pressure inductor, self-acting valve all with a programmable controller connection, programmable controller is for controlling the running state of self-acting valve.
Three described level security devices, wherein, above-mentioned safety valve group comprises the three-way joint element being arranged on the second pressure release branch road termination, three-way joint element side is connected with the first emptying branch road, opposite side is connected with the second emptying branch road, first emptying branch road is provided with the first safety valve, and the second emptying branch road is provided with the second safety valve, and the first safety valve is all connected with emptying pipeline with the second safety valve.
Three described level security devices, wherein, above-mentioned programmable controller is configured with an audible-visual annunciator, this audible-visual annunciator and programmable controller connection.
Three level security devices of a kind of LNG gas station that the utility model provides, by at the first pressure release branch road, second pressure release branch road arranges corresponding control valve respectively with on the 3rd pressure release branch road, three pressure release threshold values increased in turn are pre-set in programmable controller, namely three level security salvos are adopted, when the force value in storage tank exceedes corresponding pressure release threshold values, programmable controller can control corresponding valve successively and carry out pressure release, improve the Safety Redundancy of whole LNG gas station, enhance the Security that LNG gas station runs, potential safety hazard is eliminated among rudiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of three level security devices in the utility model.
Embodiment
The utility model provides a kind of three level security devices of LNG gas station, for making the purpose of this utility model, technological scheme and effect clearly, clearly, further describes below to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of three level security devices of LNG gas station, as shown in Figure 1, it comprises storage tank 1, wherein, storage tank 1 is provided with pressure release main line 2, pressure release main line 2 is provided with a pressure inductor 3, pressure release main line 2 is provided with the first pressure release branch road 4, second pressure release branch road 5 and the 3rd pressure release branch road 6, first pressure release branch road 4 is provided with self-acting valve 7, second pressure release branch road 5 is provided with safety valve group, 3rd pressure release branch road 6 is provided with stop valve 8, and all emptying with one pipeline 9 of self-acting valve 7, safety valve group, stop valve 8 is connected; Pressure inductor 3, self-acting valve 7 all with programmable controller 10 connection, programmable controller 10 is for controlling the running state of self-acting valve 7.
Further, above-mentioned safety valve group comprises the three-way joint element 11 being arranged on the second pressure release branch road 5 termination, three-way joint element 11 side is connected with the first emptying branch road 12, opposite side is connected with the second emptying branch road 13, first emptying branch road 12 is provided with the first safety valve 14, second emptying branch road 13 is provided with the second safety valve 15, first safety valve 14 to be all connected with emptying pipeline 9 with the second safety valve 15.And above-mentioned programmable controller 10 is configured with an audible-visual annunciator 16, this audible-visual annunciator 16 and programmable controller 10 connection.
In order to further describe the utility model, its concrete running is as follows:
Presetting three pressure threshold value increased successively at programmable controller 10, is such as a, b, c, and a<b<c.When storage tank 1 internal pressure raises, the pressure that pressure inductor 3 detects in storage tank 1 is greater than a when being less than b, programmable controller 10 sends signal to audible-visual annunciator 16, audible-visual annunciator 16 gives the alarm and reminds the pressure release of field personnel's manually opened stop valve 8, makes the pressure of storage tank 1 drop to normal level.
And when alarm nobody that audible-visual annunciator 16 sends shows interest in, pressure in storage tank 1 continues to rise, pressure inductor 3 detects that the pressure of storage tank 1 is greater than b when being less than c, programmable controller 10 sends signal to self-acting valve 7, control self-acting valve 7 unlatching and carry out pressure release, make the pressure of storage tank 1 drop to normal level.
When self-acting valve 7 because when certain reason is malfunctioning, the pressure of storage tank 1 continues to rise, when pressure inductor 3 detects that the pressure of storage tank 1 is greater than safety valve group given force value c, then safety valve group can be opened pressure release automatically, makes the pressure of storage tank 1 drop to normal level.
Certainly; more than illustrate and be only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification; made all equivalently to substitute, obvious variant, within the essential scope all dropping on this specification, protection of the present utility model ought to be subject to.
Claims (3)
1. three level security devices of a LNG gas station, it comprises storage tank, it is characterized in that, storage tank is provided with pressure release main line, pressure release main line is provided with a pressure inductor, pressure release main line is provided with the first pressure release branch road, the second pressure release branch road and the 3rd pressure release branch road, first pressure release branch road is provided with self-acting valve, second pressure release branch road is provided with safety valve group, the 3rd pressure release branch road is provided with stop valve, all emptying with one pipeline of self-acting valve, safety valve group, stop valve is connected; Pressure inductor, self-acting valve all with a programmable controller connection, programmable controller is for controlling the running state of self-acting valve.
2. three level security devices according to claim 1, it is characterized in that, above-mentioned safety valve group comprises the three-way joint element being arranged on the second pressure release branch road termination, three-way joint element side is connected with the first emptying branch road, opposite side is connected with the second emptying branch road, first emptying branch road is provided with the first safety valve, and the second emptying branch road is provided with the second safety valve, and the first safety valve is all connected with emptying pipeline with the second safety valve.
3. three level security devices according to claim 1, it is characterized in that, above-mentioned programmable controller is configured with an audible-visual annunciator, this audible-visual annunciator and programmable controller connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420655435.5U CN204213620U (en) | 2014-11-05 | 2014-11-05 | A kind of three level security devices of LNG gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420655435.5U CN204213620U (en) | 2014-11-05 | 2014-11-05 | A kind of three level security devices of LNG gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213620U true CN204213620U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420655435.5U Expired - Fee Related CN204213620U (en) | 2014-11-05 | 2014-11-05 | A kind of three level security devices of LNG gas station |
Country Status (1)
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| CN (1) | CN204213620U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665379A (en) * | 2016-03-29 | 2016-06-15 | 天津市青成自来水工程有限公司 | Tri-phase pulse method pipeline cleaning system |
| CN105855246A (en) * | 2016-03-29 | 2016-08-17 | 天津市青成自来水工程有限公司 | System for cleaning pipeline through pulse method |
| CN108319185A (en) * | 2017-12-20 | 2018-07-24 | 北京航天计量测试技术研究所 | Gas circuit secondary safety redundant apparatus |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
| CN113357535A (en) * | 2021-06-10 | 2021-09-07 | 苏州工业园区奥菲特气体设备有限公司 | Distributed pressurization system |
-
2014
- 2014-11-05 CN CN201420655435.5U patent/CN204213620U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665379A (en) * | 2016-03-29 | 2016-06-15 | 天津市青成自来水工程有限公司 | Tri-phase pulse method pipeline cleaning system |
| CN105855246A (en) * | 2016-03-29 | 2016-08-17 | 天津市青成自来水工程有限公司 | System for cleaning pipeline through pulse method |
| CN105665379B (en) * | 2016-03-29 | 2018-02-23 | 天津市青成自来水工程有限公司 | Three-phase pulse method pipeline cleaning system |
| CN105855246B (en) * | 2016-03-29 | 2019-04-19 | 天津市青成自来水工程有限公司 | Impulse method pipeline cleaning system |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
| CN108319185A (en) * | 2017-12-20 | 2018-07-24 | 北京航天计量测试技术研究所 | Gas circuit secondary safety redundant apparatus |
| CN113357535A (en) * | 2021-06-10 | 2021-09-07 | 苏州工业园区奥菲特气体设备有限公司 | Distributed pressurization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20151105 |
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| EXPY | Termination of patent right or utility model |