A kind of torch gas reclaims control quick opening valve system automatically
Technical field
The utility model belongs to the setting that the torch gas of Petroleum Production reclaims, and particularly a kind of torch gas reclaims control quick opening valve system automatically.
Background technique
At present, in industries such as oil gas field production, petroleum refining and petrochemical industry, all can produce a large amount of torch gas, these torch gas all were by discharging behind the torch burning in the past.In order to make full use of the energy, to reduce environmental pollution, a lot of oil gas fields, oil refinery and petrochemical plant are all to recyclable component such as C in the torch gas
3H
8Deng reclaiming.And a problem that will solve when torch gas reclaimed is, should guarantee the normal operating pressure that reclaiming system is certain, make gas that does not have value and the gas of in emergency circumstances releasing in a large number arrive torch smoothly again and burn, with safety and the minimizing environmental pollution that guarantees reclaiming system.Addressing this problem usual method is to adopt water seal control, and promptly dividing at torch increases a water seal arrangement between flow container and the flare tip.Under nominal situation, utilize water seal arrangement to guarantee the reclaiming system normal pressure; When in emergency circumstances a large amount of gases were released, over-pressure gas broke through the water seal layer of water seal arrangement, entered torch and burned.The advantage of water seal control is a safety, reliable, its shortcoming is a very flexible, when former releasing system increases the back pressure of a fixed amount, just require the safety valve that original system is connected, the throughput of Decompression valves to carry out detailed demonstration, when the discharging burning, easily water is brought in the flare tip simultaneously, even when the molecular sealer impeded drainage is logical, form the high pressure water seal, and cause piping vibration, will constitute certain potential risk to the safe operation of whole system and even flare tip.This method need be built a water sealed tank in addition, owing to need to guarantee certain water level, water is brought in the flare tip when preventing the gas quick drain, so the volume of water sealed tank is generally bigger.Crafty little, the pipe network in offshore platform or oil tanker space gathers, if a last cover seal water system, existing space is often not enough, and the volume of hold facility and investment all can increase.
Summary of the invention
The purpose of this utility model provides a kind of torch gas and reclaims control quick opening valve system automatically, utilize quick opening valve and rupture disk that double shield is provided, releasing for gas in emergency circumstances provides safe and reliable path, be provided with pressure regulator valve in addition, guarantee that gas pressure is steady in the torch house steward before torch divides flow container.Fully guaranteed reclaiming system safety by these measures, stably produced.
The utility model is by quick opening valve, rupture disk, bypass valve, valve driven by lock and pressure regulator valve is formed, be distributed on the torch house steward (3) between branch flow container (2) and the flare tip (1), the quick opening valve (5) and the middle control emergency system (11) that are installed on flare tip (1) main line link to each other with the high alarm switch of pressure (10) on dividing flow container (2), bypass valve (6), rupture disk (7), pressure regulator valve (8) is in parallel with quick opening valve (5) by three branch roads, lock leaves valve (4) and is leading to rupture disk (7), the branch road two ends of pressure regulator valve (8) are respectively installed one, and pressure regulator valve (8) links to each other with pressure transmitter (9) on dividing flow container (2).
The utility model is reasonable in design, and technology is simple, and equipment investment is few, and maintenance cost is low, and the whole system device volume that takes up space is little.Construction amount is little, and the design-build cycle is short, and is little to the original production systematic influence under need be to the situation that reclaims torch gas and flare system is transformed, and has good economic benefits.The flare gas recovery system that can be widely used in industries such as oil, chemical industry.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model wherein pressure regulator valve (8) can when the reclaiming system proper functioning, regulate pressure in the branch flow container (2) among a small circle; Quick opening valve (5) and rupture disk (7) provide safeguard for a large amount of releasing of gas in emergency circumstances, and the pressure set points of rupture disk (7) is during greater than the pressure set points 50kpa of quick opening valve (5)~150kpa, as the second class protection device.During the flare gas recovery system proper functioning, torch divides the pressure of flow container (2) to fluctuate because of the unbalanced generation of torch tolerance, and pressure regulator valve (8) is regulated aperture release portion torch gas according to the signal of the pressure transmitter (9) on minute flow container (2).When urgency takes place, when a large amount of gases need promptly be released, then divide pressure rising in the flow container (2), the high alarm switch of pressure (10) is when reaching alarming value, middle control emergency system (11) is sent signal and quick opening valve (5) is opened for quick opening valve (5) rapidly, make gas arrive flare tip (1) smoothly, if hindering for some reason, can not open rapidly by quick opening valve (5), the pipe network internal pressure will be because the gathering of gas will continue rising, when the pipe network internal pressure reached the pressure set points of rupture disk (7), gas broke through rupture disk (7) thereby arrives flare tip (1) smoothly.Lock leaves the rupture disk (7) easy for installation of valve (4) and the periodical repair and the replacing of pressure regulator valve (8).Its specific operation process is, two locks driven valve (4) close simultaneously, thereby the branch road by rupture disk (7) and pressure regulator valve (8) is cut off, and realizes the maintenance to both.All paths that lead to flare tip (1) are blocked in the maintenance process, bypass valve (6) need be opened certain aperture, guarantee the safety of reclaiming system.Pressure pressure regulator valve (8) is regulated torch and is divided the interior gas pressure of the preceding torch house steward of flow container (2) to reach 100kpaA~200kpaA.The setting value of rupture disk (7) is 100kpaA~300kpaA.Can open the Pressure Relief Valve of pressure release fast when the selection of valve, quick opening valve (5) select emergency signal to send in 1~5 second, lock leaves valve (4) and selects to have the footpath valve that function is often opened in locking.