CN204328482U - A kind of LPG tank pipe-line system - Google Patents
A kind of LPG tank pipe-line system Download PDFInfo
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- CN204328482U CN204328482U CN201420787398.3U CN201420787398U CN204328482U CN 204328482 U CN204328482 U CN 204328482U CN 201420787398 U CN201420787398 U CN 201420787398U CN 204328482 U CN204328482 U CN 204328482U
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Abstract
The utility model discloses a kind of LPG tank pipe-line system, enter flare system to burn or high-altitude is diffused and the problem that causes thus to solve existing pipe-line system Liquefied Hydrocarbon in accident the injecting process.The utility model is located on plural LPG tank, and each LPG tank is equipped with liquid phase header, offlet and the gas phase header of being with valve.Liquid phase header is provided with the discharge pipe of band valve.Be provided with the feed pipe being with valve between liquid phase header and feed cycle pipeline, and between accident water injection pump outlet conduit, be provided with the accident filling pipe being with valve.Gas phase header is provided with the large gas branch pipe of row of band valve.Be provided with the manual relief pipeline and safety valve relief pipeline of being with valve between gas phase header and gas exhausting pipeline, and between gas-liquid equilibrium header, be provided with the gas-liquid equilibrium pipeline being with valve.Be provided with between gas phase header and feed cycle pipeline and float tank pipeline, drift tank pipeline is provided with stop valve and safety check.The utility model can be used for the LPG tank of petrochemical enterprise.
Description
Technical field
The utility model belongs to petrochemical enterprise oil storage and transportation safety production technique field, relates to a kind of LPG tank pipe-line system for LPG tank.
Background technique
In petrochemical enterprise, Liquefied Hydrocarbon is one of important material of processing and storage.Liquefied Hydrocarbon comprises liquefied petroleum gas (LPG) and the one pack system such as propane, propylene, belongs to A-grade in the first class's class fire risk material, and total pressure formula storage tank (ball storage tank and horizontal tank) that adopts stores more.LPG tank is provided with LPG tank pipe-line system; When bottom LPG tank, ozzle weld seam, flange or valve occur to leak being subject to stress, impact or other accident and destroying, for reduce tank inside Liquefied Hydrocarbon spill-out, avoid breaking out of fire and explosive accident, existing pipe-line system from occur leak LPG tank bottom to water filling in tank, water and Liquefied Hydrocarbon is utilized to there is the feature of proportion difference, make Liquefied Hydrocarbon be suspended in the top of water, what ensure leakage point outflow is water.Liquefied Hydrocarbon in LPG tank enters flare system and to burn or high-altitude is diffused to (during without flare system) in air, carries out repair process again after hydrocarbon emptying to be liquefied to LPG tank.The shortcoming of this kind of mode of operation is: Liquefied Hydrocarbon enters flare system and burns, and economic loss is large; If high-altitude is diffused, not only economic loss is large, and befouling environment, and easy breaking out of fire blast grade is made trouble former.
Summary of the invention
The purpose of this utility model is to provide a kind of LPG tank pipe-line system, enters flare system to burn or high-altitude is diffused and the problem that causes thus to solve existing LPG tank pipe-line system Liquefied Hydrocarbon in accident the injecting process.
For solving the problem, the technical solution adopted in the utility model is: a kind of LPG tank pipe-line system, be provided with water source, accident water injection pump, accident REDUCTION FOR INLET OF WATER FILLING PUMP road, accident water injection pump outlet conduit, feed cycle pipeline, gas-liquid equilibrium header, gas exhausting pipeline, LPG tank pipe-line system is located on plural LPG tank, each LPG tank is equipped with the liquid phase header of band valve, offlet and gas phase header, liquid phase header is provided with the discharge pipe of band valve, the feed pipe being with valve is provided with between liquid phase header and feed cycle pipeline, and be provided with the accident filling pipe being with valve between accident water injection pump outlet conduit, gas phase header is provided with the large gas branch pipe of row of band valve, the manual relief pipeline and safety valve relief pipeline of being with valve is provided with between gas phase header and gas exhausting pipeline, and be provided with the gas-liquid equilibrium pipeline being with valve between gas-liquid equilibrium header, it is characterized in that: be provided with between gas phase header and feed cycle pipeline and float tank pipeline, drift tank pipeline is provided with stop valve and safety check.
Adopt the utility model, there is following beneficial effect: when using LPG tank pipe-line system of the present utility model to carry out accident water filling when LPG tank generation bottom leakage accident, Liquefied Hydrocarbon in emergency storage tank all can be poured into other accident-free LPG tank safely, avoid these Liquefied Hydrocarbon to enter flare system and to burn or high-altitude is diffused (explanation referring to this specification embodiment part).Like this, just can reduce economic loss, preventing pollution environment and fire explosion grade make trouble thus generation.The utility model can improve the Security of petrochemical enterprise LPG tank accident water flood operations, and reliability is high, little investment, simple to operate, flexible.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model LPG tank pipe-line system is located on two LPG tank.
Embodiment
See Fig. 1, LPG tank pipe-line system (referred to as pipe-line system) of the present utility model is located on two LPG tank, and two LPG tank are the first LPG tank 1 and the second LPG tank 2 respectively.Pipe-line system is provided with water source 3, accident water injection pump 5, accident REDUCTION FOR INLET OF WATER FILLING PUMP road 4, accident water injection pump outlet conduit 6, feed cycle pipeline 15, gas-liquid equilibrium header 20, gas exhausting pipeline 23, flare system 24.First LPG tank 1 and the second LPG tank 2 are respectively equipped with the first LPG tank liquid phase header 9, first LPG tank offlet 25, first LPG tank gas phase header 11 and the second LPG tank liquid phase header 10, second LPG tank offlet 26, second LPG tank gas phase header 12 of band valve.The below of the first LPG tank offlet 25 and the second LPG tank offlet 26 is equipped with water drain funnel 27.
First LPG tank liquid phase header 9 and the second LPG tank liquid phase header 10 are respectively equipped with the first LPG tank discharge pipe 18 and the second LPG tank discharge pipe 19 being with valve.First LPG tank liquid phase header 9 and be respectively equipped with the first LPG tank feed pipe 16 and the second LPG tank feed pipe 17 being with valve between the second LPG tank liquid phase header 10 and feed cycle pipeline 15, and between accident water injection pump outlet conduit 6, be respectively equipped with the first LPG tank accident filling pipe 7 and the second LPG tank accident filling pipe 8 being with valve.The first LPG tank first LPG tank gas phase header 11 and the second LPG tank gas phase header 12 being respectively equipped with band valve arranges large gas branch pipe 28 and the second LPG tank arranges large gas branch pipe 29.First LPG tank gas phase header 11 and be respectively equipped with the first LPG tank manual relief pipeline 301, the first LPG tank safety valve relief pipeline 311 and the second LPG tank manual relief pipeline 302, second LPG tank safety valve relief pipeline 312 of being with valve between the second LPG tank gas phase header 12 and gas exhausting pipeline 23, and between gas-liquid equilibrium header 20, be respectively equipped with the first LPG tank gas-liquid equilibrium pipeline 21 and the second LPG tank gas-liquid equilibrium pipeline 22 being with valve.Valve on above-mentioned each pipeline, arranges except stop valve and safety valve except on the first LPG tank safety valve relief pipeline 311 and the second LPG tank safety valve relief pipeline 312, remaining pipes all only establishes stop valve.The open and close of the utility model hereinafter described valve are all for each stop valve.
First LPG tank gas phase header 11 and be respectively equipped with the first LPG tank between the second LPG tank gas phase header 12 and feed cycle pipeline 15 and float tank pipeline 13 and the second LPG tank and float tank pipeline 14, first LPG tank and float tank pipeline 13 and the second LPG tank and float on tank pipeline 14 and be equipped with stop valve 32 and safety check 33.
Below in conjunction with Fig. 1, operating process of the present utility model is described.When the first LPG tank 1 and the second LPG tank 2 normal running, accident water injection pump 5 shuts down, and the stop valve 32 on the valve on the first LPG tank accident filling pipe 7 and the second LPG tank accident filling pipe 8 and the first LPG tank drift tank pipeline 13 and the second LPG tank drift tank pipeline 14 is all closed.Valve on all the other each pipelines is opened by the requirement of normal running or is closed.
When the second LPG tank 2 impunity so when leakage accident occurs in the bottom of the first LPG tank 1, valve closing on first LPG tank feed pipe 16, first LPG tank discharge pipe 18 and the first LPG tank gas-liquid equilibrium pipeline 21, stop valve 32 on valve on first LPG tank accident filling pipe 7, first LPG tank liquid phase header 9, first LPG tank gas phase header 11, second LPG tank feed pipe 17 and the second LPG tank liquid phase header 10 and the first LPG tank drift tank pipeline 13 is opened, and accident water injection pump 5 starts.Water from water source 3 enters accident water injection pump 5 through accident REDUCTION FOR INLET OF WATER FILLING PUMP road 4, after accident water injection pump 5 pressure-raising, enter accident water injection pump outlet conduit 6, first LPG tank accident filling pipe 7 and the first LPG tank liquid phase header 9, be finally injected in the first LPG tank 1.The water yield injected will ensure that the medium that the first LPG tank 1 bottom leakage mouth leaks out is water instead of Liquefied Hydrocarbon, reaches Liquefied Hydrocarbon fluid-tight, leak free object.
Water is constantly injected in the first LPG tank 1, and the water yield of injection is greater than the water yield of pot bottom leakage.Along with the increase of water injection time and water injection rate, the continuous lifting of Liquefied Hydrocarbon that the water injected will store in the first LPG tank 1, Liquefied Hydrocarbon is poured in the second LPG tank 2 through the first LPG tank gas phase header 11, first LPG tank drift tank pipeline 13, feed cycle pipeline 15, second LPG tank feed pipe 17 and the second LPG tank liquid phase header 10 the most at last.
When the Liquefied Hydrocarbon judged in the first LPG tank 1 by the increasing amount of liquid volume in the second LPG tank 2 is all poured in the second LPG tank 2, the all pipelines belonging to the first LPG tank 1 (comprise the first LPG tank liquid phase header 9, first LPG tank offlet 25, first LPG tank gas phase header 11, first LPG tank discharge pipe 18, first LPG tank feed pipe 16, first LPG tank accident filling pipe 7, first LPG tank arranges large gas branch pipe 28, the manual relief pipeline 301 of first LPG tank, first LPG tank safety valve relief pipeline 311, first LPG tank gas-liquid equilibrium pipeline 21, first LPG tank drift tank pipeline 13), valve Close All on it, ensure that the first LPG tank 1 and the second LPG tank 2 completely cut off.Then the valve on the first LPG tank offlet 25 and the first LPG tank are arranged the valve open on large gas branch pipe 28, the water in the first LPG tank 1 is entered water drain funnel 27.After water emptying, repair process is carried out to the first LPG tank 1.
In above-mentioned operating process, the first LPG tank 1 should be removed the chain control of high liquid level, be closed the function of the valve on the first LPG tank accident filling pipe 7, and Accident prevention water can not be injected in the first LPG tank 1.The open and close of the valve of undeclared on off state, determine according to action need and general knowledge.In above-mentioned operating process, the Liquefied Hydrocarbon in the first LPG tank 1 all enters the second LPG tank 2, instead of enters flare system 24 through gas exhausting pipeline 23 and to burn or high-altitude is diffused.The effect of gas exhausting pipeline 23 just, when the first LPG tank 1 and the second LPG tank 2 normal running and water flood operations, for for ensureing that Liquefied Hydrocarbon that handling safety is released enters flare system 24 and to burn or high-altitude is diffused.
When the first LPG tank 1 impunity so when leakage accident occurs in the bottom of the second LPG tank 2, by the mode corresponding with aforesaid operations, the Liquefied Hydrocarbon in the second LPG tank 2 can be poured in the first LPG tank 1 through the second LPG tank gas phase header 12, second LPG tank drift tank pipeline 14, feed cycle pipeline 15, first LPG tank feed pipe 16 and the first LPG tank liquid phase header 9.Detailed description is omitted.
Pipe-line system of the present utility model also can be located on the LPG tank more than two (such as tens).Now, each LPG tank arranges pipeline belonging to it (liquid phase header, offlet, gas phase header, discharge pipe, feed pipe, accident filling pipe, arrange large gas branch pipe, manual relief pipeline, safety valve relief pipeline, gas-liquid equilibrium pipeline, float tank pipeline etc.) by the mode identical with the second LPG tank 2 with the first LPG tank 1 shown in Fig. 1, and is correspondingly connected with accident water injection pump outlet conduit 6, feed cycle pipeline 15, gas-liquid equilibrium header 20, gas exhausting pipeline 23.When leakage accident occurs in the bottom of one or more LPG tank, by the mode similar with aforesaid operations process, the Liquefied Hydrocarbon in these LPG tank is poured in accident-free LPG tank.Detailed description is omitted.
LPG tank described in the utility model is normal temperature total pressure formula storage tank (instead of half freezing-type and full freezing-type storage tank); The Liquefied Hydrocarbon stored in LPG tank is hydrophobic substance, does not dissolve each other with water.Water source 3 should according to the concrete condition of petrochemical enterprise, select reliable water source (pressure water source or water source with no pressure), fire water can be selected, produce water etc.Accident water injection pump 5 can be dedicated pump, and other technique pump also can dual-purpose.The rated flow of accident water injection pump 5 should consider the maximum possible leakage rate of the time of accident water filling and the LPG tank of generation leakage accident; The lift of accident water injection pump 5 comprehensively should be determined according to the pressure at water source 3, the operation pressure that the LPG tank of leakage accident occurs and pipeline frictional resistance etc.
Claims (1)
1. a LPG tank pipe-line system, be provided with water source (3), accident water injection pump (5), accident REDUCTION FOR INLET OF WATER FILLING PUMP road (4), accident water injection pump outlet conduit (6), feed cycle pipeline (15), gas-liquid equilibrium header (20), gas exhausting pipeline (23), LPG tank pipe-line system is located on plural LPG tank, each LPG tank is equipped with the liquid phase header of band valve, offlet and gas phase header, liquid phase header is provided with the discharge pipe of band valve, the feed pipe being with valve is provided with between liquid phase header and feed cycle pipeline (15), and be provided with the accident filling pipe being with valve between accident water injection pump outlet conduit (6), gas phase header is provided with the large gas branch pipe of row of band valve, the manual relief pipeline being with valve and safety valve relief pipeline is provided with between gas phase header and gas exhausting pipeline (23), and be provided with the gas-liquid equilibrium pipeline being with valve between gas-liquid equilibrium header (20), it is characterized in that: be provided with between gas phase header and feed cycle pipeline (15) and float tank pipeline, drift tank pipeline is provided with stop valve and safety check.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787398.3U CN204328482U (en) | 2014-12-08 | 2014-12-08 | A kind of LPG tank pipe-line system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787398.3U CN204328482U (en) | 2014-12-08 | 2014-12-08 | A kind of LPG tank pipe-line system |
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| CN204328482U true CN204328482U (en) | 2015-05-13 |
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| CN201420787398.3U Active CN204328482U (en) | 2014-12-08 | 2014-12-08 | A kind of LPG tank pipe-line system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730553A (en) * | 2016-12-09 | 2017-05-31 | 大连福佳·大化石油化工有限公司 | A kind of improved spherical tank water line and its operating method |
| CN106764426A (en) * | 2016-11-17 | 2017-05-31 | 内蒙古大唐国际克什克腾煤制天然气有限责任公司 | A kind of Propylene Spherical Tanks with flood pattern |
| CN111156426A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Liquefied hydrocarbon spherical tank leakage protection device and method |
-
2014
- 2014-12-08 CN CN201420787398.3U patent/CN204328482U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764426A (en) * | 2016-11-17 | 2017-05-31 | 内蒙古大唐国际克什克腾煤制天然气有限责任公司 | A kind of Propylene Spherical Tanks with flood pattern |
| CN106730553A (en) * | 2016-12-09 | 2017-05-31 | 大连福佳·大化石油化工有限公司 | A kind of improved spherical tank water line and its operating method |
| CN111156426A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Liquefied hydrocarbon spherical tank leakage protection device and method |
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