CN113911572B - Floating roof sealing performance detection device and method for petroleum external floating roof storage tank - Google Patents
Floating roof sealing performance detection device and method for petroleum external floating roof storage tank Download PDFInfo
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- CN113911572B CN113911572B CN202111517082.3A CN202111517082A CN113911572B CN 113911572 B CN113911572 B CN 113911572B CN 202111517082 A CN202111517082 A CN 202111517082A CN 113911572 B CN113911572 B CN 113911572B
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- 238000007667 floating Methods 0.000 title claims abstract description 191
- 238000007789 sealing Methods 0.000 title claims abstract description 162
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 239000003208 petroleum Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000000523 sample Substances 0.000 claims description 23
- 230000000670 limiting effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 17
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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- 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
- B65D88/42—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle
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- 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
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
- B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
- B65D90/51—Arrangements of indicating or measuring devices of leakage-indicating devices characterised by sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of petroleum storage and transportation, and particularly discloses a floating roof sealing detection device and method for a petroleum external floating roof storage tank, wherein the technical scheme is as follows: including setting up at subaerial upper end floating roof jar, and the drive arrangement of setting both sides around floating roof jar, and connect the sealing device on drive arrangement top to and set up the detection device on sealing device, floating roof jar outer wall upside is equipped with the seal groove, and drive arrangement includes the track, and the track setting is in the both sides of floating roof jar, the outer tip installation motor of track, drive gear is connected to the motor output, and drive gear outer wall meshing connects the chain. The invention has the beneficial effects that: the invention can conveniently detect the sealing performance of the sealing ring of the floating roof, increases the detection efficiency and the detection precision, can detect the leakage condition of the sealing ring at an early stage, and realizes early discovery and early maintenance.
Description
Technical Field
The invention relates to the technical field of petroleum storage and transportation, in particular to a floating roof sealing performance detection device and method for a petroleum external floating roof storage tank.
Background
In petroleum and petrochemical industry, most of petroleum storage tanks adopt an external floating roof tank, which is an important storage and transportation facility and mainly comprises a vertical cylindrical tank wall, a floating roof floating on the liquid surface in the tank, accessories and a tank bottom, wherein the floating roof can float up and down along the liquid in the tank, a sealing device is arranged between the floating roof and the tank wall, the oil volatilization loss is reduced by more than 80 percent compared with a fixed storage tank, and the floating roof is also provided with accessories such as a floating roof upright post, a floating roof manhole, a vent valve and the like.
The floating roof at the upper end of the existing floating roof tank has the defects that after the floating roof tank is used for a long time, the sealing device cannot be tightly sealed, so that oil volatilization is increased, even hidden dangers such as fire disasters can be caused, and in the fire accidents of the existing floating roof oil storage tank, the fire disasters caused by the failure of the sealing ring account for 72.8 percent. The sealing structure widely used at home at present mainly comprises mechanical sealing and soft sealing, and oil gas leakage gaps exist at the sealing position. Influenced by the volatile matter of the floating oil hung on the tank wall, although the storage tank is provided with a part of fire alarm system, foam fire extinguishing system and cooling spraying system, the devices are started after the fire occurs, and the early monitoring and early warning of accident signs can not be realized, thus the device belongs to post-passive fire fighting.
The existing technology for monitoring the sealing device in the untight condition appears, for example, the chinese patent document publication No. CN107215580A, patent name "outer floating roof storage tank sealing ring monitoring and protecting device", the technical scheme that the optical fiber concentration monitoring device is installed on the outer floating roof storage tank, and the vacuum pumping device is installed on the outer floating roof storage tank, solves the above problems well, and can be used for monitoring and protecting the outer floating roof storage tank sealing ring. It has the problems that: the leakage condition of the sealing ring at the sealing device cannot be detected in early stage, but can be detected only after the leakage occurs after the oil is filled, and early detection and early maintenance cannot be realized.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a floating roof sealing performance detection device and method for an oil external floating roof storage tank.
The invention provides a floating roof sealing detection device of an oil external floating roof storage tank, which adopts the technical scheme that: the device comprises a floating roof tank arranged on the ground, driving devices arranged on the front side and the rear side of the floating roof tank, a sealing device connected to the top end of the floating roof tank, and a detection device arranged on the sealing device; a sealing groove is formed in the upper side of the outer wall of the floating roof tank, a floating roof floating up and down is arranged inside the top end of the floating roof tank, and a sealing ring is arranged between the floating roof and the inner wall of the floating roof tank;
the driving device comprises rails, the rails are arranged on two sides of the floating roof tank, a motor is arranged at the outer end of each rail, the output end of the motor is connected with a driving gear, the outer wall of the driving gear is meshed and connected with one end of a chain, the other end of the chain is meshed and connected with a follow-up gear, and the follow-up gear is arranged at the lower end of the inside of each rail through a bearing seat;
the sealing device comprises two groups of semi-sealed barrels, the bottoms of the two groups of semi-sealed barrels are movably connected to the top end of the supporting rod respectively, the bottom ends of the inner walls of the semi-sealed barrels are bonded with the clamping sealing strips, the top ends of the semi-sealed barrels are provided with sealing covers, the inner walls of the sealing covers are bonded with the sealing strips, and the bottom end of one semi-sealed barrel is connected with a water delivery pipe;
the detection device comprises a vibration meter, the vibration meter is installed on the surface of the right end of the sealing cover through a bolt, the vibration meter is connected with a vibration measuring probe through a wire, the vibration measuring probe is connected with a telescopic rod, the telescopic rod is installed at the bottom of the sealing cover through the bolt, and the vibration measuring probe is placed on an outer ring of the floating roof through the telescopic rod.
Preferably, the rear end of the inside of the track is provided with a tooth groove, and the tooth groove is in meshed connection with the rear end of the chain through a movable gear.
Preferably, the movable gear is internally rotated to connect the supporting rod, the bottom end of the outer wall of the supporting rod is provided with a limiting block, the limiting block is connected to the bottom end of the inside of the track in a sliding mode, the bottom end of the supporting rod is provided with a roller, and the roller is connected to the bottom of the track in a rolling mode.
Preferably, the top end of the support rod is mounted on the bottom of the sealing device through a bolt.
Preferably, above-mentioned joint sealing strip joint is in the inside of seal groove, and the sealing strip in close contact with on the sealed lid realizes sealedly, the delivery pipe external water receiving pump.
The invention provides a using method of a floating roof sealing detection device of an oil external floating roof storage tank, which comprises the following operation steps:
s1: pumping high-pressure gas into the floating roof tank through a high-pressure gas injection pump to enable the floating roof to float upwards to the top end of the floating roof tank to keep balance; starting the motor, so that the motor drives the driving gear to rotate, and the chain between the driving gear and the follow-up gear rotates, so that the chain drives the movable gear to rotate;
s2: the movable gear is driven to rotate through the transmission of the chain, so that the movable gear moves left and right, and further the semi-sealed barrel at the upper end of the supporting rod is driven to move;
s3: the two groups of semi-sealed barrels are close to each other until the semi-sealed barrels are in close contact with each other, the clamping sealing strips are inserted into the sealing grooves in a proper manner, and the two groups of sealing strips are in close contact with each other, so that a sealing space is formed by the two groups of semi-sealed barrels;
s4: starting an external water pump, and enabling the water pump to convey water to the inside of the semi-sealed barrel through a water conveying pipe until the water submerges the floating roof;
s5: continuously pumping high-pressure gas into the floating roof tank to ensure that the floating roof is in a balanced state again; the vibration measuring probes which are uniformly distributed are arranged on the outer ring of the floating roof;
s6: if the sealing ring of the floating roof has a leakage problem, gas in the floating roof tank overflows along the sealing ring of the floating roof, bubbles are generated in water at the moment, the vibration frequency generated by the bubbles is captured by the vibration measurement probe and transmitted to the vibration measurement instrument, so that the leakage problem of the sealing ring of the floating roof is explained.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the chain drives the movable gear to rotate by starting the motor, and the movable gear is meshed and connected between the tooth grooves and the rear end of the chain, so that the movable gear is moved leftwards and rightwards, and further the semi-sealed barrel at the upper end of the supporting rod is driven to move, so that the floating roof can be conveniently detected without moving and operating the floating roof tank, the detection efficiency is increased, and the operation effect is simplified;
the two groups of semi-sealed barrels are close to each other until the semi-sealed barrels are in tight contact, the clamping sealing strips are inserted into the sealing grooves, and the two groups of sealing strips are in tight contact, so that the two groups of semi-sealed barrels form a sealing space, and the effects of increasing the sealing performance and preventing the detection result from being influenced are achieved;
third, the vibration measuring probe is placed above the outer ring of the floating roof, if the sealing ring of the floating roof has a leakage problem, bubbles are generated in water, the vibration frequency generated by the bubbles is captured by the vibration measuring probe and transmitted to the vibration measuring instrument, so that the leakage problem of the sealing ring of the floating roof is explained, if the sealing ring of the floating roof does not have the leakage problem, the bubbles are not generated in water, the vibration frequency cannot be captured, and the leakage problem of the sealing ring of the floating roof is further explained, so that the effects of conveniently detecting the sealing performance of the floating roof, increasing the detection efficiency and the detection accuracy are achieved, the leakage problem can be discovered early, the leakage can be discovered early, the maintenance is performed early, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall front view of the present invention;
FIG. 3 is a schematic view of another angle configuration of a floating roof tank;
FIG. 4 is a schematic view of the external structure of the sealing device;
FIG. 5 is a right side view of the sealing device;
FIG. 6 is a front view of the driving device;
FIG. 7 is a schematic top view of the driving device;
FIG. 8 is a schematic structural view of example 4;
in the figure: the device comprises the ground 1, a floating roof tank 2, a driving device 3, a sealing device 4, a detection device 5, a high-pressure gas injection pump 6, a sealing groove 21, a floating roof 22, a sealing ring 23, a floating roof manhole 24, a rail 31, a tooth socket 311, a motor 32, a driving gear 33, a chain 34, a follow-up gear 35, a movable gear 36, a supporting rod 37, a limiting block 371, a roller 372, a semi-sealed barrel 41, a clamping sealing strip 42, a sealing cover 43, a water pipe 44, a sealing strip 431, a vibration meter 51, a vibration measurement probe 52 and an expansion rod 53.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
the installation of floating roof tank 2 is fixed on ground 1, and floating roof tank 2 includes seal groove 21 and floats top 22, floats top tank 2 outer wall upside and is equipped with seal groove 21, and convenient joint sealing strip 42 cooperation with sealing device 4 is used, increases the effect of the leakproofness of sealing device 4, floats top tank 2 top and is equipped with floating roof 22, detects through the sealing washer 23 to floating roof 22, confirms whether there is the leakage condition in the sealing washer 23 that floats roof 22.
Wherein, the driving device 3 is arranged at both sides of the bottom end of the floating roof tank 2, which facilitates the supporting and driving effect of the sealing device 4 at the top end of the floating roof tank 2, the driving device 3 comprises a track 31, a tooth space 311, a motor 32, a driving gear 33, a chain 34, a follower gear 35, a movable gear 36, a support rod 37, a limit block 371 and a roller 372, the motor 32 is arranged as a three-phase asynchronous motor, the track 31 is arranged at both sides of the floating roof tank 2, which facilitates the supporting and driving effect of the sealing device 4 at the top end of the floating roof tank 2, the motor 32 is arranged at the outer end of the track 31 to play a fixing role, the output end of the motor 32 is connected with the driving gear 33, the outer wall of the driving gear 33 is meshed with one end of the chain 34, the other end of the chain 34 is meshed with the follower gear 35 to play a driving role of the driving chain 34, which facilitates the driving effect of the movable gear 36, the follower gear 35 is arranged at the inner lower end of the track 31 through a bearing seat, the fixing function is achieved, and the follow-up gear 35 is prevented from falling off during operation;
the rear end inside the track 31 is provided with a tooth groove 311, so that the movable gear 36 is conveniently limited, and the effect of preventing the movable gear 36 from falling off during movement is achieved, the tooth groove 311 is meshed with the rear end of the chain 34 and is connected with the movable gear 36, the movable gear 36 is driven to rotate through the transmission of the chain 34, and the movable gear 36 can move left and right under the limiting effect of the tooth groove 311 on the movable gear 36;
inside rotation joint support pole 37 of loose gear 36, removal through loose gear 36, thereby drive bracing piece 37 and remove, and can not influence loose gear 36's rotation, bracing piece 37 outer wall bottom is equipped with stopper 371, stopper 371 sliding connection is in track 31's inside bottom, thereby it is spacing to carry out the removal of bracing piece 37, prevent that bracing piece 37 from taking place the skew when removing, bracing piece 37 bottom is equipped with gyro wheel 372, gyro wheel 372 rolling connection is in track 31's bottom, play the effect of support, prevent that loose gear 36 atress is excessive, lead to the active region who breaks away from chain 34, cause the unable removal of loose gear 36.
The bottom of the sealing device 4 is connected with the supporting rod 37 to play a supporting role and facilitate the effect of sealing operation on the floating roof 22, the sealing device 4 comprises two groups of semi-sealed barrels 41, clamping sealing strips 42, sealing covers 43, sealing strips 431 and a water conveying pipe 44, the bottom of each group of semi-sealed barrels 41 is installed at the top end of the supporting rod 37 through bolts to play a supporting role and prevent the semi-sealed barrels 41 from falling off, and when the supporting rod 37 moves, the semi-sealed barrels 41 can be driven to move to enable the two groups of semi-sealed barrels 41 to be in contact, the two groups of semi-sealed barrels 41 form sealed barrels, the effect of detecting the floating roof 22 is facilitated, the clamping sealing strips 42 are bonded at the bottom ends of the inner walls of the semi-sealed barrels 41 to increase the sealing performance between the semi-sealed barrels 41 and the floating roof tank 2, the sealing covers 43 are arranged at the top ends of the semi-sealed barrels 41, the sealing strips 431 are bonded on the inner walls of the sealing covers 43 and are in tight contact through the two groups of sealing strips 431, the convenience detects floating roof 22, semi-sealed bucket 41 sets up to two sets of, two sets of semi-sealed bucket 41 contact presents confined space, the convenience detects floating roof 22, raceway 44 is connected to the bottom of a semi-sealed bucket 41, the external water pump of raceway 44, after two sets of semi-sealed buckets 41 merge, through starting up the water pump, make the inside water of pouring of semi-sealed bucket 41, submerge floating roof 22 until the water level, thereby seal ring 23 to floating roof 22 carries out the water level and seals, the effect of convenient audio-visual sealed condition of the sealing washer 23 who reflects floating roof 22, the water pump model sets up to BQW100, joint sealing strip 42 joint is in the inside of seal groove 21, thereby increase semi-sealed bucket 41 and floating roof jar 2 contact area's sealing performance, prevent semi-sealed bucket 41 overflow, two sets of sealing strip 431 in close contact, play sealed effect.
The invention provides a using method of a floating roof sealing detection device of an oil external floating roof storage tank, which comprises the following steps:
firstly, high-pressure gas is pumped into the floating roof tank 2 through a high-pressure gas injection pump 6 outside the floating roof tank 2, so that the floating roof 22 floats to the top end of the floating roof tank 2 and keeps balance; the motor 32 is started again, the motor 32 drives the driving gear 33 to rotate, the chain 34 between the driving gear 33 and the follow-up gear 35 rotates, the chain 34 drives the movable gear 36 to rotate, the movable gear 36 is driven to rotate through the transmission of the chain 34 as the tooth grooves 311 are meshed with the rear end of the chain 34 and connected with the movable gear 36, the movable gear 36 is driven to rotate under the limiting effect of the tooth grooves 311 on the movable gear 36, the movable gear 36 is driven to move left and right, the semi-sealed barrels 41 at the upper ends of the supporting rods 37 are driven to move, the two semi-sealed barrels 41 are close to each other until the two semi-sealed barrels are in tight contact, the clamping sealing strips 42 are inserted into the sealing groove 21 along the trend, and the two sealing strips 431 are in tight contact, so that the two semi-sealed barrels 41 form a sealing space;
then, starting an external water pump, enabling the water pump to convey water to the inside of the semi-sealed barrel 41 through the water conveying pipe 44 until the floating roof 22 is submerged, and continuing to pump high-pressure gas into the floating roof tank 2 to enable the floating roof 22 to be in a balanced state again; the vibration measuring probe 52 is arranged on the outer ring of the floating roof 22, if the sealing ring 23 of the floating roof 22 has a leakage problem, the gas in the floating roof tank 2 overflows along the sealing ring 23 of the floating roof 22, bubbles are generated in the water at the moment, the vibration frequency generated by the bubbles is captured by the vibration measuring probe 52 and transmitted to the vibration measuring instrument 51, the leakage problem of the sealing ring 23 of the floating roof 22 is explained, if the sealing ring 23 of the floating roof 22 does not have the leakage problem, the bubbles are not generated in the water, the vibration frequency cannot be captured, and the leakage problem of the sealing ring 23 of the floating roof 22 is further explained; after the detection, the water in the sealing device 4 is discharged through the water pipe 44, and the two groups of half-sealed barrels 41 are opened to complete the maintenance work.
the difference from the embodiment 1 is that: a circle of vibration measuring probes 52 are distributed on the inner wall of the top of the floating roof tank 2 at equal intervals, for example, one vibration measuring probe 52 is arranged at intervals of 1 meter, and the vibration measuring probes 52 are named on a computer respectively, so that a leakage point can be accurately found when leakage occurs, and subsequent quick maintenance is realized.
The invention provides a using method of a floating roof sealing detection device of an oil external floating roof storage tank, which comprises the following steps:
firstly, high-pressure gas is pumped into the floating roof tank 2 through a high-pressure gas injection pump 6 outside the floating roof tank 2, so that the floating roof 22 floats to the top end of the floating roof tank 2 and keeps balance; the motor 32 is started again, the motor 32 drives the driving gear 33 to rotate, the chain 34 between the driving gear 33 and the follow-up gear 35 rotates, the chain 34 drives the movable gear 36 to rotate, the movable gear 36 is driven to rotate through the transmission of the chain 34 as the tooth grooves 311 are meshed with the rear end of the chain 34 and connected with the movable gear 36, the movable gear 36 is driven to rotate under the limiting effect of the tooth grooves 311 on the movable gear 36, the movable gear 36 is driven to move left and right, the semi-sealed barrels 41 at the upper ends of the supporting rods 37 are driven to move, the two semi-sealed barrels 41 are close to each other until the two semi-sealed barrels are in tight contact, the clamping sealing strips 42 are inserted into the sealing groove 21 along the trend, and the two sealing strips 431 are in tight contact, so that the two semi-sealed barrels 41 form a sealing space;
then, starting an external water pump, enabling the water pump to convey water to the inside of the semi-sealed barrel 41 through the water conveying pipe 44 until the floating roof 22 is submerged, and continuing to pump high-pressure gas into the floating roof tank 2 to enable the floating roof 22 to be in a balanced state again; because the vibration measuring probes 52 which are uniformly distributed are arranged on the inner wall of the top end of the floating roof tank 2, if a leakage problem exists at a certain position of the sealing ring 23 of the floating roof 22, the gas in the floating roof tank 2 overflows along the sealing ring 23 of the floating roof 22, bubbles are generated at the corresponding position at the moment, and the vibration frequency generated by the bubbles is captured by the vibration measuring probe 52 beside and transmitted to the vibration measuring instrument 51, which indicates that the leakage problem exists in the sealing ring 23 of the floating roof 22, and determines the leakage position, if the leakage problem does not exist in the sealing ring 23 of the floating roof 22, no bubbles are generated in the water, the vibration frequency cannot be captured, and further indicates that the leakage problem does not exist in the sealing ring 23 of the floating roof 22; after the detection, the water in the sealing device 4 is discharged through the water pipe 44, and the two groups of half-sealed barrels 41 are opened to complete the maintenance work.
the difference from the embodiment 2 is that: a vibration measuring probe 52 may be installed at one side of the floating roof manhole 24 provided on the floating roof 22 and connected to the vibration meter 51, so that the sealability of the floating roof manhole 24 can be measured.
the difference from the embodiment 1 is that: referring to fig. 8, the top of one half-sealed barrel 41 of the present invention is connected with a water pipe 44, the water pipe 44 is externally connected with a water pump, when two half-sealed barrels 41 are combined, the water pump is started to fill the floating roof 22 in the floating roof tank 2 with water until the water level submerges the floating roof 22, so as to perform water level sealing on the sealing ring 23 of the floating roof 22, and conveniently and intuitively reflect the sealing condition effect of the sealing ring 23 of the floating roof 22. This structure also enables the tightness of the seal ring 23 of the floating roof 22 to be checked.
The invention provides a using method of a floating roof sealing detection device of an oil external floating roof storage tank, which comprises the following steps:
firstly, high-pressure gas is pumped into the floating roof tank 2 through a high-pressure gas injection pump 6 outside the floating roof tank 2, so that the floating roof 22 floats to the top end of the floating roof tank 2 and keeps balance; the motor 32 is started again, the motor 32 drives the driving gear 33 to rotate, the chain 34 between the driving gear 33 and the follow-up gear 35 rotates, the chain 34 drives the movable gear 36 to rotate, the movable gear 36 is driven to rotate through the transmission of the chain 34 as the tooth grooves 311 are meshed with the rear end of the chain 34 and connected with the movable gear 36, the movable gear 36 is driven to rotate under the limiting effect of the tooth grooves 311 on the movable gear 36, the movable gear 36 is driven to move left and right, the semi-sealed barrels 41 at the upper ends of the supporting rods 37 are driven to move, the two semi-sealed barrels 41 are close to each other until the two semi-sealed barrels are in tight contact, the clamping sealing strips 42 are inserted into the sealing groove 21 along the trend, and the two sealing strips 431 are in tight contact, so that the two semi-sealed barrels 41 form a sealing space;
then, starting an external water pump to fill water into the upper surface of the floating roof 22 in the floating roof tank 2 until the water level submerges the floating roof 22, so that the sealing ring 23 of the floating roof 22 is detected in a sealing manner, and high-pressure gas is continuously pumped into the floating roof tank 2 to ensure that the floating roof 22 is in a balanced state again; because the vibration measuring probes 52 which are uniformly distributed are arranged on the inner wall of the top end of the floating roof tank 2, if a leakage problem exists at a certain position of the sealing ring 23 of the floating roof 22, the gas in the floating roof tank 2 overflows along the sealing ring 23 of the floating roof 22, bubbles are generated at the position, and the vibration frequency generated by the bubbles is captured by the vibration measuring probe 52 beside and transmitted to the vibration measuring instrument 51, which indicates that the leakage problem exists in the sealing ring 23 of the floating roof 22, and determines the leakage position, if the leakage problem does not exist in the sealing ring 23 of the floating roof 22, no bubbles are generated in the water, the vibration frequency cannot be captured, and further indicates that the leakage problem does not exist in the sealing ring 23 of the floating roof 22; after the detection is finished, the water in the top end of the floating roof tank 2 is discharged through the auxiliary water suction pump, and the two groups of semi-sealed barrels 41 are opened to finish the maintenance work.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.
Claims (2)
1. The utility model provides a top of floating leakproofness detection device of oil outer floating roof storage tank which characterized in that: comprises a floating roof tank (2) arranged on the ground (1), driving devices (3) arranged at the front side and the rear side of the floating roof tank (2), a sealing device (4) connected to the top end of the floating roof tank (2), and a detection device (5) arranged on the sealing device (4); a sealing groove (21) is formed in the upper side of the outer wall of the floating roof tank (2), a floating roof (22) floating up and down is arranged inside the top end of the floating roof tank (2), and a sealing ring (23) is arranged between the floating roof (22) and the inner wall of the floating roof tank (2);
the driving device (3) comprises rails (31), the rails (31) are arranged on two sides of the floating roof tank (2), a motor (32) is installed at the outer end of each rail (31), the output end of the motor (32) is connected with a driving gear (33), the outer wall of the driving gear (33) is meshed and connected with one end of a chain (34), the other end of the chain (34) is meshed and connected with a follow-up gear (35), and the follow-up gear (35) is installed at the lower end of the inside of each rail (31) through a bearing seat;
the sealing device (4) comprises two groups of semi-sealing barrels (41), the bottoms of the two groups of semi-sealing barrels (41) are movably connected to the top end of the supporting rod (37) respectively, the bottom end of the inner wall of each semi-sealing barrel (41) is bonded with the clamping sealing strip (42), the top end of each semi-sealing barrel (41) is provided with a sealing cover (43), the inner wall of each sealing cover (43) is bonded with a sealing strip (431), and the bottom end of one semi-sealing barrel (41) is connected with the water conveying pipe (44);
the detection device (5) comprises a vibration meter (51), the vibration meter (51) is installed on the right end surface of the sealing cover (43) through a bolt, the vibration meter (51) is connected with a vibration measuring probe (52) through a lead, the vibration measuring probe (52) is connected with a telescopic rod (53), the telescopic rod (53) is installed at the bottom of the sealing cover (43) through a bolt, and the vibration measuring probe (52) is placed on the outer ring of the floating roof (22) through the telescopic rod (53);
a tooth groove (311) is formed in the rear end of the interior of the track (31), and a movable gear (36) is meshed and connected between the tooth groove (311) and the rear end of the chain (34);
the movable gear (36) is rotatably connected with a supporting rod (37) inside, a limiting block (371) is arranged at the bottom end of the outer wall of the supporting rod (37), the limiting block (371) is connected to the bottom end of the inside of the track (31) in a sliding mode, a roller (372) is arranged at the bottom end of the supporting rod (37), and the roller (372) is connected to the bottom of the track (31) in a rolling mode;
the top end of the supporting rod (37) is arranged at the bottom of the sealing device (4) through a bolt;
joint sealing strip (42) joint is in the inside of seal groove (21), and sealing strip (431) the in close contact with on sealed lid (43) realize sealed, raceway (44) external water pump.
2. The method for using the device for detecting the sealing performance of the floating roof of the external floating roof tank for petroleum according to claim 1, is characterized by comprising the following steps:
s1: high-pressure gas is pumped into the floating roof tank (2) through a high-pressure gas injection pump (6), so that the floating roof (22) floats upwards to the top end of the floating roof tank (2) to keep balance; starting the motor (32), enabling the motor (32) to drive the driving gear (33) to rotate, and enabling a chain (34) between the driving gear (33) and the follow-up gear (35) to rotate, so that the chain (34) drives the movable gear (36) to rotate;
s2: the movable gear (36) is driven to rotate through the transmission of the chain (34), so that the movable gear (36) moves left and right, and further the semi-sealed barrel (41) at the upper end of the support rod (37) is driven to move;
s3: the two groups of semi-sealed barrels (41) are close to each other until the semi-sealed barrels are in tight contact, the clamping sealing strips (42) are inserted into the sealing grooves (21) in a proper manner, and the two groups of sealing strips (431) are in tight contact, so that the two groups of semi-sealed barrels (41) form a sealing space;
s4: starting an external water pump at the moment, and enabling the water pump to convey water to the inside of the semi-sealed barrel (41) through a water conveying pipe (44) until the water submerges the floating roof (22);
s5: high-pressure gas is continuously added into the floating roof tank (2) to ensure that the floating roof (22) is in a balanced state again; the vibration measuring probes (52) which are uniformly distributed are arranged on the outer ring of the floating roof (22);
s6: if the sealing ring (23) of the floating roof (22) has a leakage problem, the gas in the floating roof tank (2) overflows along the sealing ring (23) of the floating roof (22), at the moment, bubbles are generated in the water, and the vibration frequency generated by the bubbles is captured by the vibration measurement probe (52) and transmitted to the vibration measurement instrument (51), which shows that the sealing ring (23) of the floating roof (22) has the leakage problem, if the sealing ring (23) of the floating roof (22) does not have the leakage problem, no bubbles are generated in the water, the vibration frequency cannot be captured, and further, the sealing ring (23) of the floating roof (22) does not have the leakage problem.
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