CN110594571B - Automatic ventilation valve with oil vapor recovery function for steel floating roof - Google Patents
Automatic ventilation valve with oil vapor recovery function for steel floating roof Download PDFInfo
- Publication number
- CN110594571B CN110594571B CN201910874847.5A CN201910874847A CN110594571B CN 110594571 B CN110594571 B CN 110594571B CN 201910874847 A CN201910874847 A CN 201910874847A CN 110594571 B CN110594571 B CN 110594571B
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- Prior art keywords
- oil
- valve
- gas
- condensate return
- return pipe
- Prior art date
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- 238000007667 floating Methods 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- 238000009833 condensation Methods 0.000 claims abstract description 19
- 230000005494 condensation Effects 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 239000007791 liquid phase Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
- B65D88/36—Large containers having floating covers, e.g. floating roofs or blankets with relatively movable sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/20—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses an automatic ventilation valve for a steel floating roof with an oil vapor recovery function, wherein a guide pipe is fixed in a valve body through a connecting plate, and a valve rod moves up and down in the guide pipe in the valve body; an oil gas collecting pipe and a condensate return pipe are welded on the valve cover; the upper ends of the oil-gas collecting pipe and the condensate return pipe are connected with an oil-gas collector; the center of the top plate of the oil-gas collector is welded with a top breather valve flange, and a flame arrester and a breather valve are sequentially installed; a condensation baffle is welded inside the oil-gas collector; the upper end of the condensate return pipe is arranged at the center of a conical bottom plate at the bottom of the oil-gas collector, the conical bottom plate extends out for a certain distance, the lower end of the condensate return pipe is inserted into a liquid phase space at the lower part of the floating disc, and the condensate return pipe is provided with a plurality of rectangular hole-shaped condensate return channels for collecting condensate and entering the condensate return pipe. The invention can effectively reduce the evaporation loss of the oil vapor, reduce static electricity generated by friction in the running process and prevent the oil vapor accumulated in the valve body from directly discharging from the valve cover seal to cause fire.
Description
Technical Field
The invention relates to an automatic ventilation valve with an oil and gas recovery function for a steel floating roof, and relates to the field of storage and transportation of oil and gas products.
Background
The steel floating roof storage tank is provided with the automatic ventilation valve, and in the lifting or falling process of the floating roof, the ventilation valve is automatically closed or opened, so that the gas below the floating roof is discharged or supplemented, the overpressure or vacuum generated below the floating roof can be effectively avoided, the floating roof and other accessories are protected, and the ventilation valve is closed under the normal operation state. The existing automatic vent valve lacks an oil gas recovery device, oil gas accumulated in the valve body in an operation state jacks up a valve cover to leak out directly, fire is easy to cause, the breathing loss is large, and the environment is polluted; meanwhile, the sealing structure between the valve body and the valve cover, the guide sleeve and the valve rod movement assembly are poor in conductivity, static electricity is easily generated due to friction in the operation process, and fire disasters can be caused when the static electricity is serious.
Disclosure of Invention
The invention aims to provide an automatic ventilation valve with an oil vapor recovery function for a steel floating roof, so as to achieve the following purposes:
a) The suction and the exhaust are realized in the lifting process of the floating roof, so that overpressure or vacuum is avoided below the floating roof;
b) The generation of static electricity in the running process is reduced, and further, fire disaster caused by ignition of materials is avoided;
c) The breathing oil vapor of the storage tank is effectively recovered in an operation state, so that the breathing loss is reduced, and the environment is protected;
d) The oil gas accumulated in the valve body is prevented from jacking the valve cover and directly leaking out to cause fire.
In order to achieve the above purpose, the technical scheme of the invention is as follows: an automatic ventilation valve for a steel floating roof with an oil vapor recovery function comprises a valve body, a valve cover and a valve rod, wherein the valve rod is positioned in the center of the valve cover, and three angle steel supports are adopted to support the valve body and the floating roof after the valve body and the floating roof are welded; the method is characterized in that:
The guide pipe is fixed in the valve body through the connecting plate, and the valve rod moves up and down in the guide pipe in the valve body; an oil gas collecting pipe and a condensate return pipe are welded on the valve cover; the upper ends of the oil-gas collecting pipe and the condensate return pipe are connected with an oil-gas collector; the center of the top plate of the oil-gas collector is welded with a top breather valve flange, and a flame arrester and a breather valve are sequentially installed; the inside of the oil-gas collector is welded with a condensation baffle, a gas circulation channel is reserved, the oil-gas is condensed at the lower edge of the baffle, and the condensate is collected at a conical bottom plate at the bottom of the oil-gas collector; the upper end of the condensate return pipe is arranged at the center of a conical bottom plate at the bottom of the oil-gas collector, the conical bottom plate extends out for a certain distance, the lower end of the condensate return pipe is inserted into a liquid phase space at the lower part of the floating disc, and the condensate return pipe is provided with a plurality of rectangular hole-shaped condensate return channels for collecting condensate and entering the condensate return pipe.
Preferably, when the floating disc ascends, the valve cover is in sealing contact with the valve body to realize the closing of the vent valve, and oil gas accumulated in the valve body enters the oil gas collector through the oil gas collecting pipe; when the floating disc descends to the bottom of the tank, the valve rod is contacted with the bottom of the tank, and the valve cover is automatically jacked up to realize the opening of the ventilation valve;
preferably, the azimuth angle of the oil-gas collector and the condensate return pipe on the valve cover is 120 degrees.
Preferably, the fixed end of the condensation baffle plate is arranged at the oil vapor inlet side, so that the oil vapor is ensured to sufficiently flow and condense.
Preferably, one end of the condensation baffle is welded with the oil-gas collector cylinder, and the other end of the condensation baffle is fixed at the upper half part of the oil-gas collector cylinder through angle steel, so that enough gas phase circulation channels are reserved.
Preferably, the lower edge of the rectangular hole-shaped condensate return channel of the condensate return pipe is flush with the lowest point of the conical bottom plate of the oil-gas collector, so that the condensate is guaranteed to be completely returned.
Preferably, the oil-gas collector is supported at the upper part of the valve cover through an oil-gas collecting pipe and a condensate return pipe, and the two pipelines simultaneously play a role in supporting the oil-gas collector.
Preferably, the valve body is in a cylindrical form, the lower end face is welded with the floating disc to realize communication with the inside of the storage tank, and the upper end face is brazed with the copper sealing surface to prevent static electricity generated when the valve cover is contacted with the valve body.
Preferably, the guide tube is made of copper, and two groups are arranged.
Compared with the prior art, the invention has the following beneficial effects:
a) The invention can ensure that automatic suction and exhaust are realized in the lifting process of the floating roof, avoid overpressure or vacuum generated below the floating roof, and ensure stable lifting of the floating roof and safe operation of the storage tank;
b) Most of the oil gas can be returned to the storage tank after being collected and condensed, so that the breathing loss of the storage tank is reduced, the VOC emission is reduced, and the environment is protected;
c) The invention can effectively reduce the generation of static electricity between floating roof structures and further reduce the risk of fire accidents;
d) The invention prevents the accumulated oil gas in the valve body from jacking the valve cover and directly leaking out to cause fire.
Drawings
FIG. 1 is a diagram of an automatic vent valve arrangement for a steel floating roof with oil vapor recovery function according to the present invention.
Fig. 2 is a top view of the valve cover of the present invention.
FIG. 3 is a schematic diagram of the braze structure of the upper seal surface of the valve body of the present invention.
Fig. 4 is a schematic view of a condensation baffle according to the present invention.
Fig. 5 is a front view of the condensate return pipe of the present invention.
Fig. 6 is a cross-sectional view of fig. 5.
FIG. 7 is a schematic diagram showing the connection of the valve body and the floating roof, and the connection of the guide pipe and the valve body.
Reference numerals illustrate: 1-valve body, 2-valve cover, 3-valve rod, 4-guide pipe, 5-oil gas collecting pipe, 6-oil gas collector, 7-condensation baffle, 8-condensate return pipe, 9-top breather valve flange, 10-flame arrester, 11-breather valve and 12-copper sealing surface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the automatic ventilation valve with the oil vapor recovery function for the steel floating roof mainly comprises a valve body 1, a valve cover 2, a valve rod 3, a guide pipe 4, an oil vapor collecting pipe 5, an oil vapor collector 6, a condensation baffle 7, a condensate return pipe 8, a top breather valve flange 9, a flame arrester 10, a breather valve 11, a corresponding supporting structure and the like.
The valve rod 3 is positioned at the center of the valve cover 2, and the azimuth angles of the oil-gas collector 6 and the condensate return pipe 8 on the valve cover 2 are 120 degrees.
As shown in fig. 7, the valve body 1 is supported on the floating roof by three angle steels after being welded with the floating roof. A copper guide tube 4 is adopted in the valve body for guiding the valve rod 1 and preventing static electricity; the guide pipes 4 are fixed in the valve body 1 through three connecting plates, and two groups of guide pipes 4 are arranged in total.
As shown in fig. 3, the upper end surface of the valve body 1 is brazed with a copper sealing surface 12 to realize an antistatic function; the copper sealing surface 12 is polished smoothly after the upper end surface of the valve body 1 is brazed, and the levelness of the sealing surface is strictly controlled.
As shown in fig. 1, 5 and 6, the condensate return pipe 8 should be inserted at least 250mm below the floating disc to ensure liquid seal and secondary volatilization of condensate; the lower edge of the rectangular hole-shaped condensate return channel of the condensate return pipe 8 is level with the lowest point of the conical bottom plate of the oil-gas collector 6, so that the collected condensate is guaranteed to completely return; the oil gas collecting pipe 5 extends 50mm below the valve cover 2 at most, so that the oil gas can enter the oil gas collector 6 smoothly. The condensate return pipe 8 is provided with a plurality of rectangular hole-shaped condensate return channels for collecting condensate to enter the condensate return pipe 8.
The inside welding of oil vapour collector 6 has condensation baffle 7 to reserve the gas circulation passageway, the oil vapour meets behind the large tracts of land metal condensation baffle 7 and heat conduction cooling fast and condenses into liquid along the lower edge of baffle 7, and the liquid droplet gathers in the toper bottom plate of oil vapour collector 6 bottom.
As shown in fig. 4, the fixed end of the condensation baffle 7 should be arranged at the oil vapor inlet side to ensure that the oil vapor is fully disturbed and condensed; one end of a condensation baffle 7 is welded with the cylinder body of the oil-gas collector 6, the other end of the condensation baffle is fixed on the cylinder body of the oil-gas collector 6 through angle steel, the condensation baffle 7 is arranged at one half of the height of the oil-gas collector 6, and enough gas phase circulation channels are reserved.
After the steel floating roof with the oil vapor recovery function is installed by the automatic vent valve, all welded joints should be subjected to kerosene leakage detection.
When in installation, the vent valve is in an open state; when the floating disc ascends, the valve cover 2 and the antistatic valve body 1 are sealed to realize the closing of the ventilation valve; when the floating disc descends to the bottom of the tank, the valve rod 3 is contacted with the bottom of the tank, the valve cover 2 is automatically jacked up to realize the opening of the ventilation valve, and the above actions can effectively prevent the space below the floating disc from generating overpressure or vacuum when the storage tank is put into use and exhausted.
In a normal operation state, the vent valve is closed, when the floating disc is in an operation state, oil gas accumulated in the valve body 2 enters the oil gas collector 6 through the oil gas collecting pipe 5, most of the oil gas is condensed along the lower edge of the baffle after being disturbed and condensed by the condensation baffle 7, liquid drops are collected by the conical bottom plate at the bottom of the oil gas collector 6, enter the pipe through the rectangular hole on the condensate return pipe 8 and return to the lower material of the floating roof, and a small part of the oil gas passes through the flame arrester 10 and the breather valve 11 to the external environment.
The above specific embodiments further describe the technical problems and technical solutions solved by the present invention in detail. It should be understood that the foregoing description is only of specific embodiments of the present invention and is not intended to limit the invention, but rather should be construed to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention.
Claims (6)
1. The automatic ventilation valve for the steel floating roof with the oil vapor recovery function comprises a valve body (1), a valve cover (2) and a valve rod (3), wherein the valve rod (3) is positioned at the center of the valve cover (2), and three angle steel supports are adopted to support the valve body (1) and the floating roof after the valve body and the floating roof are welded; the method is characterized in that: the guide pipe (4) is fixed in the valve body (1) through the connecting plate, and the valve rod (3) moves up and down in the guide pipe (4) in the valve body; an oil gas collecting pipe (5) and a condensate return pipe (8) are welded on the valve cover (2); the upper ends of the oil-gas collecting pipe (5) and the condensate return pipe (8) are connected with the oil-gas collector (6); the top breather valve flange (9) is welded at the center of the top plate of the oil-gas collector (6), and a flame arrester (10) and a breather valve (11) are sequentially installed; a condensation baffle (7) is welded in the oil-gas collector (6), a gas circulation channel is reserved, oil gas is condensed at the lower edge of the baffle, and condensate is collected on a conical bottom plate at the bottom of the oil-gas collector (6); the upper end of the condensate return pipe (8) is arranged at the center of a conical bottom plate at the bottom of the oil gas collector (6), the condensate return pipe extends out of the conical bottom plate for a certain distance, the lower end of the condensate return pipe (8) is inserted into a liquid phase space at the lower part of the floating disc, and the condensate return pipe (8) is provided with a plurality of rectangular hole-shaped condensate return channels for collecting condensate to enter the condensate return pipe;
The oil-gas collector (6) is supported at the upper part of the valve cover (2) through an oil-gas collecting pipe (5) and a condensate return pipe (8), and the two pipelines simultaneously play a role in supporting the oil-gas collector (6); the azimuth angles of the oil-gas collector (6) and the condensate return pipe (8) on the valve cover (2) are 120 degrees;
When the floating disc ascends, the valve cover (2) is in sealing contact with the valve body (1) to realize the closing of the vent valve, and the accumulated oil gas in the valve body (1) enters the oil gas collector (6) through the oil gas collecting pipe (5); when the floating disc descends to the bottom of the tank, the valve rod (3) is contacted with the bottom of the tank, and the valve cover (2) is automatically jacked to realize the opening of the ventilation valve.
2. The automatic ventilation valve for steel floating roof with oil and gas recovery function according to claim 1, wherein: the fixed end of the condensation baffle (7) is arranged at the oil vapor inlet side to ensure that the oil vapor is fully disturbed and condensed.
3. The automatic ventilation valve for steel floating roof with oil and gas recovery function according to claim 1, wherein: one end of a condensation baffle (7) is welded with the cylinder of the oil-gas collector (6), and the other end of the condensation baffle is fixed at one half of the cylinder of the oil-gas collector (6) through angle steel, so that enough gas phase circulation channels are reserved.
4. The automatic ventilation valve for steel floating roof with oil and gas recovery function according to claim 1, wherein: the lower edge of the rectangular hole-shaped condensate return channel of the condensate return pipe (8) is level with the lowest point of the conical bottom plate of the oil-gas collector (6), so that the condensate is guaranteed to be completely returned.
5. The automatic ventilation valve for steel floating roof with oil and gas recovery function according to claim 1, wherein: the valve body (1) adopts a cylinder form, the lower end surface is welded with the floating disc to realize communication with the inside of the storage tank, and the upper end surface is brazed with the copper sealing surface (12) to prevent static electricity generated when the valve cover (2) is contacted with the valve body (1).
6. The automatic ventilation valve for steel floating roof with oil and gas recovery function according to claim 1, wherein: the guide tube (4) is made of copper, and two groups are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874847.5A CN110594571B (en) | 2019-09-17 | 2019-09-17 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874847.5A CN110594571B (en) | 2019-09-17 | 2019-09-17 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594571A CN110594571A (en) | 2019-12-20 |
| CN110594571B true CN110594571B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910874847.5A Active CN110594571B (en) | 2019-09-17 | 2019-09-17 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
Country Status (1)
| Country | Link |
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| CN (1) | CN110594571B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056160B (en) * | 2020-03-08 | 2021-11-23 | 辽宁石油化工大学 | Oil consumption reduction ventilation device structure for internal floating roof type oil storage tank |
| CN111361873A (en) * | 2020-03-30 | 2020-07-03 | 华陆工程科技有限责任公司 | Ventilating and light-transmitting dual-purpose device for vertical cylindrical inner floating roof storage tank |
| CN112811019A (en) * | 2021-02-05 | 2021-05-18 | 沃德林科环保设备（北京）有限公司 | Multifunctional full-liquid-receiving inner floating disc central ventilation valve |
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