CN2350605Y

CN2350605Y - Double separating type steam drain for oil storage tank

Info

Publication number: CN2350605Y
Application number: CN 98229966
Authority: CN
Inventors: 蒲成光
Original assignee: LISHIDA INDUSTRY Co Ltd LESHAN CITY
Current assignee: LISHIDA INDUSTRY Co Ltd LESHAN CITY
Priority date: 1998-11-26
Filing date: 1998-11-26
Publication date: 1999-11-24
Anticipated expiration: 2008-11-26

Abstract

The utility model relates to a double separating type water draining device for an oil storage tank. A casing is divided into an upper cavity and a lower cavity by a baffle plate. The upper cavity which is divided by a separating cover arranged in the upper cavity and connected with a ball float body is provided with an inner cavity communicated with the upper cavity, and a separating cavity formed by a separating sleeve is communicated with the inner cavity and the lower cavity, and a communicated four-cavity structure is formed in the casing. An oil overflowing path is installed in the ball float body to realize oil-water double separation; by means of the buoyancy difference of the ball float body by the density difference of oil and water, an on-off valve is pushed by a lever for stopping the oil and draining the water automatically. The utility model has the advantages of reasonable design, high degree of automation, convenient operation and management, and obvious economic benefit on improving the quality of oil products and lightening environment pollution.

Description

Dual separated type oil storage tank STEAM TRAP

The utility model relates to the device of discharge liquid from container, particularly from the oil plant of oil storage tank storage, separate hydrophobic device, specifically a kind of dual separated type oil storage tank STEAM TRAP, it is applicable to the dehydration of crude oil and product oil oil storage tank in the petroleum chemical industry.

In general: in petroleum chemical industry, in the oil storage tank of storage crude oil or product oil, the a large amount of moisture content of capital deposition, for improving accumulating efficient, should the connate water in the oil storage tank be removed as far as possible and drain, therefore, the dehydration of oil storage tank is an important cargo handling operation in the oil storage and transportation process, especially before the feedstock oil that oil refinery (plant) carries out time processing and secondary operations enters processing device, connate water must be purified, otherwise can make processing device produce fluctuation, influence processing job safety is stable, the normal operation of high-quality continuously, when serious, influence the quality of processed product.At present, most of oil fields, the oil storage tank of oil refinery (plant) and storage and transport station and oil depot is still and adopts the artificial conventional method of dehydration by rule of thumb, this artificial dehydration method, great majority are operations in the open air, work under bad environment, labor strength is big, even more serious is: this artificial dewatering mainly is by the dehydration workman by rule of thumb, the oil content in the discharge water of detecting by an unaided eye how much control drain valve, in fact in actual dehydrating operations is done, there is a large amount of oil products to run off with discharge water discharging together, cause big gauging resource loss waste, while is serious environment pollution also, according to " Oil-Gas Storage and Transportation Engineering design " in 1994 fourth phase " transform oil storage tank tradition discharge water mode " one literary composition record: the oil loss that causes because of the oil storage tank dehydration accounts for 3 ‰ of amount of finish, by this calculating, run off about nearly 400,000 tons (being worth about 1,000,000,000 RMB) because of the oil product consume that the oil storage tank dehydration causes every year in the whole nation, this a large amount of oil plant flows into rivers, both wasted valuable oil product resource, again severe contamination rivers environment.This is the severe problem that current petrochemical industry department presses for solution.

The purpose of this utility model is to propose a kind ofly to remove moisture content in the oil storage tank in continuous, automatic hydrophobic mode, and has good oil-water separation, operational administrative is extremely convenient, reduce the dehydration labor strength, can greatly reduce oil product loss loss, alleviate the dual separated type oil storage tank STEAM TRAP of environmental pollution.

The purpose of this utility model is achieved by the following technical solution:

A kind of dual separated type oil storage tank STEAM TRAP, it is the housing that inlet tube and return tube are installed, inlet tube is connected with the bottom valve of oil storage tank, return tube is connected with the scavenger valve of oil storage tank, housing is separated into epicoele and cavity of resorption by dividing plate, following cavity wall is equipped with the keying valve, the waste pipe that drain valve is installed penetrates cavity of resorption and is connected in the keying valve, the valve rod that opens and closes valve is articulated in lever, one end of lever with place the pull bar of the floating ball body of epicoele to be hinged, the shielding can that is connected in floating ball body is separated the inner chamber that epicoele formation communicates with epicoele, done the oil spilling passage in the floating ball body, separate cavities communication with cavity and the cavity of resorption that separation sleeve forms is installed on dividing plate, constitute " four cavity configurations " that communicates in the housing, by the oil water mixture that enters housing in the oil storage tank through bottom valve, because oil, different and the immiscible characteristic of water density, the oil plant supreme top of chamber that floats carries out first separation in epicoele, enter inner chamber and further carry out secondary separation again, oil plant rises through the oil spilling passage and enters top of chamber, be back in the oil storage tank by return tube is defeated, water after secondary separation enters cavity of resorption by inner chamber through separate cavities, and it is hydrophobic that the buoyancy difference of utilizing the profit density difference that floating ball body is formed is controlled the oil resistance of keying valve automatically by lever.

The utility model is separated into epicoele by dividing plate with housing, cavity of resorption, the shielding can that is connected in floating ball body forms inner chamber, the separate cavities that is installed on the separation sleeve formation of dividing plate is communicated in inner chamber and cavity of resorption, in housing, constitute " four cavity configurations " that communicates, the oil water mixture that enters housing carries out entering inner chamber after the first separation and carries out secondary separation in epicoele, the oil plant of secondary separation is through the oil spilling passage of floating ball body, fail back in the oil storage tank by return tube, the water that is separated enters cavity of resorption by inner chamber through separate cavities, and it is hydrophobic that the buoyancy difference of utilizing the profit density difference that floating ball body is formed is controlled the oil resistance of keying valve automatically by lever.The utility model has the advantages that: the automatic hydrophobic running job that can circulate continuously, have good oil resistance drainage effect, reduce oil product with water discharging loss loss, can alleviate environmental pollution effectively, improve the working environment of workers, reduce labor strength.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a user mode schematic representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is further described:

A kind of dual separated type oil storage tank STEAM TRAP, it is the housing 1 that inlet tube 19 and return tube 16 are installed, housing 1 is supported by leg 6, the bottom is equipped with blowdown valve 7,19 places are equipped with baffle plate 18 at inlet tube, can prevent that the oil water mixture that enters housing 1 from directly impacting floating ball body 15, housing 1 is separated into epicoele 20 and cavity of resorption 4 by dividing plate 2, cavity of resorption 4 inwalls are equipped with and open and close valve 12, the waste pipe 11 that drain valve 10 is installed penetrates cavity of resorption 4 and is connected in keying valve 12, the valve rod 9 that opens and closes valve 12 is articulated in lever 8, one end of lever 8 with place the pull bar 5 of the floating ball body 15 of epicoele 20 to be hinged, the shielding can 14 that is connected in floating ball body 15 is separated the inner chamber 21 that epicoele 20 formation communicate with epicoele 20, done oil spilling logical powerful 17 in the floating ball body 15, separate cavities 3 communication with cavity 21 and cavity of resorption 4 that separation sleeve 13 forms are installed on dividing plate 2, are constituted " four cavity configurations " that communicates in the housing 1.It is work like this: the blowdown valve 7 of at first closing housing 1 during work, inlet tube 19 is connected with the bottom valve 22 of oil storage tank 24, return tube 16 is connected with the scavenger valve 23 of oil storage tank 24, connate water 26 in the oil storage tank 24 is in bottom valve 22 enters housing 1, through epicoele 20, inner chamber 21, separate cavities 3 enters cavity of resorption 4, when water level rises to certain altitude and floods floating ball body 15, the proportion of water is bigger, floating ball body 15 is subjected to the big rising relatively of buoyancy, the lever 8 that is articulated in pull bar 5 promotes valve rod 9 and opens keying valve 12, open drain valve 10 connate water 26 of can draining, when the oil water mixture that has oil plant 25 enters housing 1 epicoele 20, because oil, different and the immiscible characteristic of water density, in epicoele 20, oil plant floats and carries out first separation to epicoele 20 tops, enter inner chamber 21 and further carry out secondary separation again, oil plant in inner chamber 21 after the secondary separation enters epicoele 20 tops by oil spilling passage 17 overflows, by return tube 16 defeated being back in the oil storage tank 24, water after secondary separation enters cavity of resorption 4 by inner chamber 21 through separate cavities 3, utilize the profit density difference hydrophobic by 12 oil resistances of lever 8 automatic cycle control keying valve to the buoyancy difference that floating ball body 15 forms, promptly the dried up water level of branch in housing 1 is reduced to certain altitude, when oil plant floods floating ball body 15, floating ball body 15 can reduce because of buoyancy, floating ball body 15 descends relatively under action of gravity, valve rod 9 is closed automatically and is opened and closed valve 12, no longer draining thereby drive lever 8 is left behind.When water flooded floating ball body 15 once more, floating ball body 15 rose once more relatively, opened keying valve 12 and drained once more, the oil-water mixture that enters in the housing 1 can be circulated constantly carry out above-mentioned twice separation, the automatic continous-stable operation of dehydration work.

Claims

1. dual separated type oil storage tank STEAM TRAP, it is the housing (1) that inlet tube (19) and return tube (16) are installed, housing (1) is separated into epicoele (20) and cavity of resorption (4) by dividing plate (2), cavity of resorption (4) inwall is equipped with and opens and closes valve (12), the waste pipe (11) that drain valve (10) are installed penetrates cavity of resorption (4) and is connected in keying valve (12), the valve rod (9) that opens and closes valve (12) is articulated in lever (8), one end of lever (8) with place the pull bar (5) of the floating ball body (15) of epicoele (20) to be hinged, it is characterized in that: the shielding can (14) that is connected in floating ball body (15) is separated the inner chamber (21) that epicoele (20) formation communicates with epicoele (20), done oil spilling passage (17) in the floating ball body (15), gone up at dividing plate (2) separate cavities (3) communication with cavity (21) and the cavity of resorption (4) that separation sleeve (13) forms is installed.