Wellhead full-automatic oil stain leakproof device based on oil field downhole operation

Abstract

The invention discloses a well mouth full-automatic oil stain leakage prevention device based on oil field downhole operation, and relates to the technical field of oil field operation, the well mouth full-automatic oil stain leakage prevention device based on oil field downhole operation comprises a well mouth and a leakage prevention box, the well mouth is sleeved with the leakage prevention box, and a top hole is formed in the top of the leakage prevention box; a top hole is formed in one side of the anti-leakage box, an oil scraping ring brush is arranged in the top hole, a mounting hole is formed in one side of the anti-leakage box, a cabinet bin is mounted on the mounting hole, an electric telescopic rod is mounted in the cabinet bin, a buckle clamping head is mounted on the electric telescopic rod, and a visual positioning instrument is mounted in the anti-leakage box. The oil rod is pulled out from the top hole through the lifter, at the moment, the oil scraping ring brush can conveniently conduct oil scraping treatment on the oil rod moving upwards, meanwhile, oil dirt overflowing from a well opening can be directionally output through the collecting pipe through the leakage prevention box, and therefore full-automatic oil dirt leakage prevention can be achieved during oil field underground operation.

Description

Technical Field

[0001] The invention relates to the technical field of oil well operation, in particular to a wellhead fully automatic oil pollution prevention device for downhole operation in an oil field. Background Art

[0002] Oilfield downhole operations refer to a series of technical measures taken during the exploration and development of oilfields to ensure the normal production of oil and water wells. Downhole operations mainly include oil and water well maintenance, oil and water well overhaul, oil layer transformation and oil testing. The main purpose of oilfield downhole operations is to restore and maintain the normal production of oil and water wells. Since the oil and natural gas resources thousands or thousands of meters underground will be corroded by oil, gas and water during the long-term production process, the oil and water wells will gradually age, various faults will occur, and even production will be stopped. Therefore, downhole operations can repair these problems and ensure that the oil and water wells resume normal production.

[0003] During the existing underground operations in oil fields, due to the lack of anti-leakage function, oil will continue to overflow from the wellhead of the oil field under maintenance, and some oil will adhere to the oil rod, causing oil leakage when the oil rod is placed on the ground, resulting in environmental pollution. Summary of the invention

[0004] The purpose of the present invention is to provide a fully automatic oil pollution prevention device for wellhead used in oil field underground operations, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: the fully automatic oil leakage prevention device for wellheads used for downhole operations in oil fields comprises a wellhead and an anti-leakage box, the wellhead is sleeved with an anti-leakage box, the top of the anti-leakage box is provided with a top hole, an oil scraper ring brush is provided in the top hole, a fixing plate is installed on one side of the anti-leakage box, a servo motor is installed on the fixing plate, a lifter is installed on the servo motor, a lifter is installed on the lifter, a clamping head is installed on the lifter, a mounting hole is opened on one side of the anti-leakage box, a cabinet is installed on the mounting hole, an electric telescopic rod is installed in the cabinet, a buckle clamping head is installed on the electric telescopic rod, and the anti-leakage box is provided with a mounting hole. A visual locator is installed in the box, and a collecting pipe is installed at the bottom of the anti-leakage box. When it is necessary to carry out downhole operations in the oil field, the lifter is started to control the clamping head to clamp the oil rod in the wellhead, and the oil rod can be pulled out from the top hole with the cooperation of the lifter. At this time, the scraper ring brush in the top hole is convenient for scraping oil from the oil rod that is moving upward, and when the buckle on the oil rod moves to the visual locator, the visual locator can control the buckle clamping head to clamp the buckle through the electric telescopic rod, which can avoid the buckle from hindering the extraction of the oil rod. At the same time, the oil overflowing from the wellhead can be output in a direction through the collecting pipe through the anti-leakage box, thereby realizing fully automatic oil leakage prevention during downhole operations in the oil field.

[0006] Furthermore, the anti-leakage box is provided with an oil-proof reinforcing component and an oil-proof utilizing component, and the operation of the oil-proof reinforcing component is utilized to provide operating driving force for the oil-proof utilizing component.

[0007] Further, the oil-proof reinforcement assembly includes a ring groove, a rotating ring, a driven tooth, a driving motor and a driving tooth; The top hole is provided with an annular groove, a swivel is rotatably sleeved in the annular groove, a driven tooth is sleeved on the swivel, and an oil scraper ring brush is installed in the ring of the swivel. A driving motor is installed on the anti-leakage box, and a driving tooth is installed on the output shaft of the driving motor. The driving tooth is meshed with the driven tooth. When the oil rod is pulled out from the top hole, the driving motor is started so that the driving tooth can drive the driven tooth to rotate. Since the swivel can rotate in the annular groove, the driven tooth can drive the oil scraper ring brush to scrape the oil stains attached to the outer wall of the oil rod through the swivel during the rotation process.

[0008] Further, the oil-proof enhancement assembly includes a water tank, a water pump, a water suction pipe, a cleaning pipe, a first water delivery pipe, a spray ring pipe and a second water delivery pipe; A water tank and a water pump are installed on one side of the anti-leakage box, a heater is installed in the water tank, an input end of the water pump is connected to the water tank through a water suction pipe, a cleaning pipe is installed on the top of the cabinet, the cleaning pipe is connected to the first output end of the water pump through a first water delivery pipe, a spray ring pipe is arranged in the anti-leakage box, the spray ring pipe is connected to the second output end of the water pump through a second water delivery pipe, when the oil rod is raised, the water pump and the heater are started, and the hot water in the water tank can be discharged through the spray ring pipe through the water suction pipe and the second water delivery pipe, which is beneficial for the spray ring pipe to spray hot water on the oil rod for cleaning, and at the same time, hot water can be delivered to the cleaning pipe through the first water delivery pipe, which is beneficial for the cleaning pipe to flush the buckles in the cabinet.

[0009] Further, the oil-proof reinforcement assembly also includes a transmission wheel, a perforation, a driven sleeve wheel, a transmission belt, a drive shaft, a transmission shaft, an annular slideway, a connecting block and a linkage rod; The swivel ring is provided with a transmission wheel, the top of the anti-leakage box is provided with a through hole, the upper end of the through hole is rotatably installed with a driven sleeve wheel, the transmission wheel and the driven sleeve wheel are provided with a transmission belt, the driven sleeve wheel is rotatably installed with a driving shaft, the transmission shaft is slidably installed in the through hole, the transmission shaft is provided with an annular slideway, the driving shaft is inserted in the annular slideway, the lower end of the transmission shaft is provided with a connecting block, the connecting block is provided with a linkage rod, and the linkage rod is provided with a spray ring pipe. When the swivel ring rotates, the swivel ring can drive the transmission wheel to rotate synchronously during the rotation process, and the rotation of the pulley formed by the transmission wheel, the transmission belt and the driven sleeve wheel can be realized. The driven sleeve wheel can drive the transmission shaft to move longitudinally back and forth in the through hole through the extrusion force of the driving shaft on the annular slideway during the rotation process, so that the transmission shaft can drive the spray ring pipe to move longitudinally back and forth synchronously through the connecting block and the linkage rod, which is conducive to improving the comprehensive spray cleaning of the oil rod by the spray ring pipe.

[0010] Furthermore, the oil-proof utilization component includes a connecting rod, a lower pressure plate, a slide groove, a slider, a connecting spring, a support rod, a force plate and a storage tube; A connecting rod is installed on the spray ring pipe, and a lower pressure plate is installed on the connecting rod. A slide groove is opened on the side of the anti-leakage box close to the visual locator. Two sliders are slidably installed in the slide groove. The opposite back surfaces of the two sliders are connected to the slide groove through a connecting spring. Support rods are installed on the two sliders, and a force plate is installed on the support rod. The two ends of the support rod are hinged to the slider and the force plate respectively. A storage tube is installed on the slider, and a cleaning pad is installed on the storage tube. The cleaning pad contacts the visual locator. When the spray ring pipe When moving downward, the spray ring tube can drive the lower pressure plate to move downward synchronously through the connecting rod during the downward movement process. The downward pressure of the lower pressure plate on the force plate can allow the force plate to drive the two sliders to move toward each other in the slide groove through the support rod, so that the sliders can wipe and clean the lens of the visual locator through the cleaning pad on the storage tube, and when the spray ring tube moves up and resets, the two sliders can move back and forth and reset under the elastic force of the connecting spring, thereby driving the cleaning pad to wipe and clean the lens of the visual locator for a second time.

[0011] Furthermore, the oil-proof utilization component also includes a working cylinder, a piston, an aspirating agent chamber, an aspirating agent delivery chamber, a transmission rod, a sliding hole, a connecting plate, an aspirating agent storage box, an aspirating agent pipe, an aspirating agent delivery pipe, a returning agent pipe and a reflux pipe; A working cylinder and a storage box are installed on one side of the anti-leakage box, a piston is slidably installed in the working cylinder, an inhalation chamber and a delivery chamber are formed in the working cylinder by the piston, a transmission rod is installed on the piston, a sliding hole is provided on the top of the inhalation chamber, the transmission rod passes through the sliding hole, the upper end of the transmission rod is connected to the top of the transmission shaft through a connecting plate, the input end of the delivery chamber is connected to the storage box through an inhalation tube, and the output end of the delivery chamber is connected to the input end of the storage tube through the delivery tube, the input end of the inhalation chamber is connected to the output end of the storage tube through a return tube, and the output end of the inhalation chamber is connected to the storage box through a reflux tube. When the ring tube moves downward, the transmission shaft can drive the piston in the working cylinder to move downward synchronously through the connecting plate and the transmission rod, so that the detergent in the delivery chamber can enter the storage tube through the delivery tube, which is convenient for the detergent to infiltrate the cleaning pad through the output port of the storage tube. At the same time, the suction chamber can suck the detergent in the storage tube through the return tube, so as to realize the flow of the detergent in the storage tube. When the spray ring tube moves upward, the delivery chamber can suck the detergent in the storage box through the suction tube, and the suction chamber can transport the detergent to the storage box through the reflux pipe, so as to realize the circulation of the detergent in the storage tube and avoid the detergent overflowing from the cleaning pad.

[0012] Furthermore, the suction tube, delivery tube, return tube and reflux tube are all one-way tubes.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When it is necessary to carry out downhole operations in the oil field, the oil rod is pulled out from the top hole through the lifter. At this time, the scraper ring brush is convenient to scrape the oil from the oil rod that is moving upward. At the same time, the oil spilled from the wellhead can be directed and output through the collection pipe through the anti-leakage box, thereby realizing fully automatic oil leakage prevention during downhole operations in the oil field.

[0014] The present application achieves the goal of using hot water to rinse the oil rod and the buckle through the spray ring pipe and the cleaning pipe through the setting of the oil-proof reinforcement component. At the same time, it can realize the rotational scraping of the oil stains attached to the outer wall of the oil rod by the oil scraper ring brush, and can also realize the longitudinal reciprocating movement of the spray ring pipe, which is beneficial to improving the comprehensive spray cleaning of the oil rod by the spray ring pipe.

[0015] The present application utilizes the setting of the oil-proof component to realize multiple wiping and cleaning of the visual locator by the cleaning pad, and can also utilize the movement of the spray ring tube to realize the circulation of the cleaning agent in the storage tube, which can prevent the cleaning agent from overflowing from the cleaning pad and ensure the cleaning effect of the visual locator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention; Figure 3 It is a schematic diagram of a first cutaway structure of the present invention; Figure 4 It is a second cross-sectional structural schematic diagram of the present invention; Figure 5 for Figure 3 A is an enlarged structural diagram; Figure 6 for Figure 4 The enlarged structural diagram at B in FIG. Figure 7 for Figure 4 The enlarged structural diagram at C in FIG. Figure 8 for Figure 3 The enlarged structural diagram at D in the figure.

[0017] In the figure: 1. Wellhead; 2. Anti-leakage box; 3. Top hole; 4. Oil scraper ring brush; 5. Fixed plate; 6. Servo motor; 7. Lifter; 8. Lifter; 9. Clamping head; 10. Cabinet; 11. Electric telescopic rod; 12. Buckle clamping head; 13. Visual locator; 14. Oil-proof reinforcement component; 1401. Ring groove; 1402. Rotating ring; 1403. Driven gear; 1404. Driving motor; 1405. Driving gear; 1406. Water tank; 1407. Water pump; 1408. Water suction pipe; 1409. Cleaning pipe; 1410. First water delivery pipe; 1411. Spray ring pipe; 1412. Second water delivery pipe; 1413. Transmission wheel; 1414. Perforation; 1415. Driven sleeve wheel; 1416. Transmission belt; 1417. Driving shaft; 1418. Transmission shaft; 1419. Annular slideway; 1420. Connecting block; 1421. Linkage rod; 15. Oil-proof utilization component; 1501. Connecting rod; 1502. Lower pressure plate; 1503. Slide groove; 1504. Sliding block; 1505. Connecting spring; 1506. Support rod; 1507. Force plate; 1508. Agent storage tube; 1509. Working cylinder; 1510. Piston; 1511. Agent suction chamber; 1512. Agent delivery chamber; 1513. Transmission rod; 1514. Sliding hole; 1515. Connecting plate; 1516. Agent storage box; 1517. Agent suction tube; 1518. Agent delivery tube; 1519. Agent return tube; 1520. Reflux tube. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: Figure 1-Figure 4 As shown, the present invention provides a technical solution of a fully automatic oil leakage prevention device for wellheads used for underground operations in oil fields, the fully automatic oil leakage prevention device for wellheads used for underground operations in oil fields comprises a wellhead 1 and an anti-leakage box 2, the wellhead 1 is sleeved with an anti-leakage box 2, the top of the anti-leakage box 2 is provided with a top hole 3, an oil scraper ring brush 4 is arranged in the top hole 3, a fixing plate 5 is installed on one side of the anti-leakage box 2, a servo motor 6 is installed on the fixing plate 5, a lifter 7 is installed on the servo motor 6, a lifter 8 is installed on the lifter 7, a clamping head 9 is installed on the lifter 8, a mounting hole is opened on one side of the anti-leakage box 2, a cabinet 10 is installed on the mounting hole, an electric telescopic rod 11 is installed in the cabinet 10, and an electric telescopic rod 11 is installed on the electric telescopic rod 11 There is a buckle clamping head 12, and a visual locator 13 is installed in the anti-leakage box 2. A collecting pipe is installed at the bottom of the anti-leakage box 2. When it is necessary to carry out downhole operations in the oil field, the lifting device 8 is started to control the clamping head 9 to clamp the oil rod in the wellhead 1. With the cooperation of the lifting device 7, the oil rod can be pulled out from the top hole 3. At this time, the scraper ring brush 4 in the top hole 3 is convenient for scraping oil from the oil rod that is moving upward, and when the buckle on the oil rod moves to the visual locator 13, the visual locator 13 can control the buckle clamping head 12 to clamp the buckle through the electric telescopic rod 11, which can prevent the buckle from hindering the extraction of the oil rod. At the same time, the oil spilled from the wellhead 1 can be output in a direction through the collecting pipe through the anti-leakage box 2, thereby realizing fully automatic oil leakage prevention during downhole operations in the oil field.

[0020] The anti-leakage box 2 is provided with an oil-proof reinforcing component 14 and an oil-proof utilizing component 15 , and the operation of the oil-proof reinforcing component 14 is utilized to provide an operating driving force for the oil-proof utilizing component 15 .

[0021] like Figure 1-Figure 6 As shown, the oil-proof reinforcement component 14 includes a ring groove 1401, a rotating ring 1402, a driven tooth 1403, a driving motor 1404 and a driving tooth 1405; The top hole 3 is provided with an annular groove 1401, a swivel 1402 is rotatably sleeved in the annular groove 1401, a driven tooth 1403 is sleeved on the swivel 1402, and an oil scraper ring brush 4 is installed in the ring of the swivel 1402, a driving motor 1404 is installed on the anti-leakage box 2, a driving tooth 1405 is installed on the output shaft of the driving motor 1404, and the driving tooth 1405 is meshed with the driven tooth 1403. When the oil rod is pulled out from the top hole 3, the driving motor 1404 is started so that the driving tooth 1405 can drive the driven tooth 1403 to rotate. Since the swivel 1402 can rotate in the annular groove 1401, the driven tooth 1403 can drive the oil scraper ring brush 4 to scrape the oil stains attached to the outer wall of the oil rod through the swivel 1402 during the rotation process.

[0022] The oil-proof reinforcement assembly 14 includes a water tank 1406, a water pump 1407, a water suction pipe 1408, a cleaning pipe 1409, a first water delivery pipe 1410, a spray ring pipe 1411 and a second water delivery pipe 1412; A water tank 1406 and a water pump 1407 are installed on one side of the anti-leakage box 2. A heater is installed in the water tank 1406. The input end of the water pump 1407 is connected to the water tank 1406 through a water suction pipe 1408. A cleaning pipe 1409 is installed on the top of the cabinet 10. The cleaning pipe 1409 is connected to the first output end of the water pump 1407 through a first water delivery pipe 1410. A spray ring pipe 1411 is provided in the anti-leakage box 2. The spray ring pipe 1411 is connected to the water pump 1407. The second output end of 7 is connected through the second water pipe 1412. When the oil rod is raised, the water pump 1407 and the heater are started. The hot water in the water tank 1406 can be discharged through the spray ring pipe 1411 through the suction pipe 1408 and the second water pipe 1412, which is beneficial for the spray ring pipe 1411 to spray hot water to clean the oil rod. At the same time, hot water can be transported to the cleaning pipe 1409 through the first water pipe 1410, which is beneficial for the cleaning pipe 1409 to flush the buckles in the cabinet 10.

[0023] The oil-proof reinforcement assembly 14 also includes a transmission wheel 1413, a perforation 1414, a driven sleeve wheel 1415, a transmission belt 1416, a driving shaft 1417, a transmission shaft 1418, an annular slideway 1419, a connecting block 1420 and a linkage rod 1421; A transmission wheel 1413 is sleeved on the rotating ring 1402, a through hole 1414 is opened on the top of the anti-leakage box 2, a driven sleeve wheel 1415 is rotatably installed on the upper end of the through hole 1414, a transmission belt 1416 is sleeved on the transmission wheel 1413 and the driven sleeve wheel 1415, a driving shaft 1417 is rotatably installed on the driven sleeve wheel 1415, a transmission shaft 1418 is slidably installed in the through hole 1414, an annular slideway 1419 is provided on the transmission shaft 1418, the driving shaft 1417 is inserted in the annular slideway 1419, a connecting block 1420 is installed on the lower end of the transmission shaft 1418, a linkage rod 1421 is installed on the connecting block 1420, and a spray The annular tube 1411, when the swivel 1402 rotates, the swivel 1402 can drive the transmission wheel 1413 to rotate synchronously during the rotation process. The rotation of the pulley formed by the transmission wheel 1413, the transmission belt 1416 and the driven sleeve 1415 can realize the rotation of the driven sleeve 1415. During the rotation process, the driven sleeve 1415 can drive the transmission shaft 1418 to move longitudinally back and forth in the perforation 1414 through the extrusion force of the driving shaft 1417 on the annular slideway 1419, so that the transmission shaft 1418 can drive the spray annular tube 1411 to move longitudinally back and forth synchronously through the connecting block 1420 and the linkage rod 1421, which is beneficial to improve the comprehensive spray cleaning of the oil rod by the spray annular tube 1411.

[0024] like Figure 1-Figure 8 As shown, the oil-proof utilization assembly 15 includes a connecting rod 1501, a lower pressure plate 1502, a slide groove 1503, a slider 1504, a connecting spring 1505, a support rod 1506, a force plate 1507 and a storage tube 1508; A connecting rod 1501 is installed on the spray ring pipe 1411, and a lower pressure plate 1502 is installed on the connecting rod 1501. A slide groove 1503 is opened on the side of the anti-leakage box 2 close to the visual locator 13. Two sliders 1504 are slidably installed in the slide groove 1503. The opposite back surfaces of the two sliders 1504 are connected to the slide groove 1503 through a connecting spring 1505. A support rod 1506 is installed on the two sliders 1504, and a force plate 1507 is installed on the support rod 1506. The two ends of the support rod 1506 are respectively hinged to the slider 1504 and the force plate 1507. A storage tube 1508 is installed on the slider 1504, and a cleaning pad is installed on the storage tube 1508. The cleaning pad is connected to the visual locator. 13 are in contact with each other. When the spray ring tube 1411 moves downward, the spray ring tube 1411 can drive the lower pressure plate 1502 to move downward synchronously through the connecting rod 1501 during the downward movement. The lower pressure plate 1502 presses down on the force plate 1507, so that the force plate 1507 can drive the two sliders 1504 to move toward each other in the slide groove 1503 through the support rod 1506, so that the slider 1504 can wipe and clean the lens of the visual locator 13 through the cleaning pad on the storage tube 1508, and when the spray ring tube 1411 moves up and resets, the two sliders 1504 can move back and forth and reset under the elastic force of the connecting spring 1505, so as to drive the cleaning pad to wipe and clean the lens of the visual locator 13 for the second time.

[0025] The oil-proof utilization assembly 15 also includes a working cylinder 1509, a piston 1510, an inhalation chamber 1511, a delivery chamber 1512, a transmission rod 1513, a sliding hole 1514, a connecting plate 1515, an agent storage box 1516, an inhalation pipe 1517, a delivery pipe 1518, a return pipe 1519 and a reflux pipe 1520; A working cylinder 1509 and a drug storage box 1516 are installed on one side of the anti-leakage box 2. A piston 1510 is slidably installed in the working cylinder 1509. The piston 1510 forms an inhalation chamber 1511 and a delivery chamber 1512 in the working cylinder 1509. A transmission rod 1513 is installed on the piston 1510. A sliding hole 1514 is provided on the top of the inhalation chamber 1511. The transmission rod 1513 passes through the sliding hole 1514. The end is connected to the top of the transmission shaft 1418 through a connecting plate 1515, the input end of the delivery chamber 1512 is connected to the storage box 1516 through an inhalation tube 1517, and the output end of the delivery chamber 1512 is connected to the input end of the storage tube 1508 through the delivery tube 1518, the input end of the inhalation chamber 1511 is connected to the output end of the storage tube 1508 through a return tube 1519, and the output end of the inhalation chamber 1511 is connected to the storage box 1516 through When the spray ring pipe 1411 moves downward, the transmission shaft 1418 can drive the piston 1510 in the working cylinder 1509 to move downward synchronously through the connecting plate 1515 and the transmission rod 1513, so that the detergent in the delivery chamber 1512 can enter the storage tube 1508 through the delivery tube 1518, so that the detergent can infiltrate the cleaning pad through the output port of the storage tube 1508. At the same time, the suction chamber 1511 can be 1519 sucks the detergent in the storage tube 1508, which can realize the flow of the detergent in the storage tube 1508. When the spray ring tube 1411 moves upward, the delivery chamber 1512 can suck the detergent in the storage box 1516 through the suction tube 1517, and the suction chamber 1511 can transport the detergent to the storage box 1516 through the reflux pipe 1520, thereby realizing the circulation of the detergent in the storage tube 1508 and avoiding the detergent from overflowing from the cleaning pad.

[0026] The drug suction tube 1517 , drug delivery tube 1518 , drug return tube 1519 and reflux tube 1520 are all one-way pipes.

[0027] Working principle of the present invention: When it is necessary to carry out downhole operations in the oil field, by starting the lifter 8, the clamping head 9 is controlled to clamp the oil rod in the wellhead 1, and the oil rod can be pulled out from the top hole 3 with the cooperation of the lifter 7. At this time, the scraper ring brush 4 in the top hole 3 is convenient for scraping oil from the oil rod that is moving upward, and when the buckle on the oil rod moves to the visual locator 13, the visual locator 13 can control the buckle clamping head 12 to clamp the buckle through the electric telescopic rod 11, which can prevent the buckle from hindering the extraction of the oil rod. At the same time, the oil overflowing from the wellhead 1 can be directed and output through the collection pipe through the anti-leakage box 2, thereby realizing fully automatic oil leakage prevention during downhole operations in the oil field.

[0028] When the oil rod is pulled out from the top hole 3, the driving motor 1404 is started so that the driving tooth 1405 can drive the driven tooth 1403 to rotate. Since the rotating ring 1402 can rotate in the ring groove 1401, the driven tooth 1403 can drive the oil scraper ring brush 4 to scrape the oil stains attached to the outer wall of the oil rod through the rotating ring 1402 during the rotation process.

[0029] When the oil rod is raised, start the water pump 1407 and the heater, and the hot water in the water tank 1406 can be discharged through the spray ring pipe 1411 via the suction pipe 1408 and the second water pipe 1412, which is beneficial for the spray ring pipe 1411 to spray hot water to clean the oil rod. At the same time, hot water can be transported to the cleaning pipe 1409 through the first water pipe 1410, which is beneficial for the cleaning pipe 1409 to flush the buckles in the cabinet 10.

[0030] When the swivel 1402 rotates, the swivel 1402 can drive the transmission wheel 1413 to rotate synchronously during the rotation process. The rotation of the pulley formed by the transmission wheel 1413, the transmission belt 1416 and the driven sleeve 1415 can realize the rotation of the driven sleeve 1415. During the rotation process, the driven sleeve 1415 can drive the transmission shaft 1418 to move longitudinally back and forth in the perforation 1414 through the extrusion force of the driving shaft 1417 on the annular slideway 1419, so that the transmission shaft 1418 can drive the spray ring pipe 1411 to move longitudinally back and forth synchronously through the connecting block 1420 and the linkage rod 1421, which is beneficial to improve the comprehensive spray cleaning of the oil rod by the spray ring pipe 1411.

[0031] When the spray ring tube 1411 moves downward, the spray ring tube 1411 can drive the lower pressure plate 1502 to move downward synchronously through the connecting rod 1501 during the downward movement process. Through the downward pressure of the lower pressure plate 1502 on the force plate 1507, the force plate 1507 can drive the two sliders 1504 to move toward each other in the slide groove 1503 through the support rod 1506, so that the slider 1504 can wipe and clean the lens of the visual locator 13 through the cleaning pad on the storage tube 1508, and when the spray ring tube 1411 moves up and resets, the two sliders 1504 can move back and forth and reset under the elastic force of the connecting spring 1505, thereby driving the cleaning pad to wipe and clean the lens of the visual locator 13 for the second time.

[0032] When the spray ring pipe 1411 moves downward, the transmission shaft 1418 can drive the piston 1510 in the working cylinder 1509 to move downward synchronously through the connecting plate 1515 and the transmission rod 1513, so that the detergent in the delivery chamber 1512 can enter the storage tube 1508 through the delivery tube 1518, which is convenient for the detergent to infiltrate the cleaning pad through the output port of the storage tube 1508. At the same time, the suction chamber 1511 can suck the detergent in the storage tube 1508 through the return tube 1519, so that the detergent can flow in the storage tube 1508. When the spray ring pipe 1411 moves upward, the delivery chamber 1512 can suck the detergent in the storage box 1516 through the suction tube 1517, and the suction chamber 1511 can transport the detergent to the storage box 1516 through the reflux tube 1520, so that the detergent can circulate in the storage tube 1508, and overflow from the cleaning pad can be avoided.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A fully automatic oil leakage prevention device for wellhead used in oilfield underground operations, characterized in that: The fully automatic oil pollution prevention device for wellheads used for downhole operations in oil fields comprises a wellhead (1) and a leakage prevention box (2). The wellhead (1) is sleeved with the leakage prevention box (2). The top of the leakage prevention box (2) is provided with a top hole (3). An oil scraper ring brush (4) is arranged in the top hole (3). A fixing plate (5) is installed on one side of the leakage prevention box (2). A servo motor (6) is installed on the fixing plate (5). A lifter (7) is installed on the servo motor (6). A lifter (8) is installed on the lifter (7). A clamping head (9) is installed on the lifter (8). A mounting hole is opened on one side of the leakage prevention box (2). A cabinet (10) is installed on the mounting hole. An electric telescopic rod (11) is installed in the cabinet (10). A buckle clamping head (12) is installed on the electric telescopic rod (11). A visual positioning instrument (13) is installed in the leakage prevention box (2). A collecting pipe is installed at the bottom of the leakage prevention box (2).

2. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 1 is characterized by: The anti-leakage box (2) is provided with an oil-proof enhancement component (14) and an oil-proof utilization component (15), and the operation of the oil-proof enhancement component (14) is utilized to provide an operating driving force for the oil-proof utilization component (15).

3. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 2 is characterized by: The oil-proof reinforcement component (14) comprises an annular groove (1401), a rotating ring (1402), a driven tooth (1403), a driving motor (1404) and a driving tooth (1405); The top hole (3) is provided with an annular groove (1401), a rotating ring (1402) is rotatably sleeved in the annular groove (1401), a driven tooth (1403) is sleeved on the rotating ring (1402), and an oil scraping ring brush (4) is installed in the ring of the rotating ring (1402), a driving motor (1404) is installed on the anti-leakage box (2), and a driving tooth (1405) is installed on the output shaft of the driving motor (1404), and the driving tooth (1405) is meshed with the driven tooth (1403).

4. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 3 is characterized by: The oil-proof reinforcement component (14) comprises a water tank (1406), a water pump (1407), a water suction pipe (1408), a cleaning pipe (1409), a first water delivery pipe (1410), a spray ring pipe (1411), and a second water delivery pipe (1412); A water tank (1406) and a water pump (1407) are installed on one side of the anti-leakage box (2); a heater is installed in the water tank (1406); an input end of the water pump (1407) is connected to the water tank (1406) via a water suction pipe (1408); a cleaning pipe (1409) is installed on the top of the cabinet (10); the cleaning pipe (1409) is connected to a first output end of the water pump (1407) via a first water delivery pipe (1410); a spray ring pipe (1411) is provided in the anti-leakage box (2); the spray ring pipe (1411) is connected to a second output end of the water pump (1407) via a second water delivery pipe (1412).

5. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 4 is characterized by: The oil-proof reinforcement component (14) further comprises a transmission wheel (1413), a perforation (1414), a driven sleeve wheel (1415), a transmission belt (1416), a drive shaft (1417), a transmission shaft (1418), an annular slideway (1419), a connecting block (1420) and a linkage rod (1421); A transmission wheel (1413) is sleeved on the rotating ring (1402); a through hole (1414) is provided on the top of the anti-leakage box (2); a driven sleeve wheel (1415) is rotatably mounted on the upper end of the through hole (1414); a transmission belt (1416) is sleeved on the transmission wheel (1413) and the driven sleeve wheel (1415); a driving shaft (1417) is rotatably mounted on the driven sleeve wheel (1415); a transmission shaft (1418) is slidably mounted in the through hole (1414); an annular slideway (1419) is provided on the transmission shaft (1418); the driving shaft (1417) is inserted into the annular slideway (1419); a connecting block (1420) is mounted on the lower end of the transmission shaft (1418); a linkage rod (1421) is mounted on the connecting block (1420); and a spray ring pipe (1411) is mounted on the linkage rod (1421).

6. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 5 is characterized by: The oil-proof utilization component (15) comprises a connecting rod (1501), a lower pressure plate (1502), a slide groove (1503), a slider (1504), a connecting spring (1505), a support rod (1506), a force plate (1507) and a storage tube (1508); The spray ring tube (1411) is provided with a connecting rod (1501), and a lower pressure plate (1502) is provided on the connecting rod (1501). A slide groove (1503) is provided on one side of the anti-leakage box (2) close to the visual locator (13), and two sliders (1504) are slidably installed in the slide groove (1503). The opposite sides of the two sliders (1504) are connected to the slide groove (1503) by connecting springs (1505). The two sliders (1504) are connected, and a support rod (1506) is installed on the two sliders (1504), and a force plate (1507) is installed on the support rod (1506). The two ends of the support rod (1506) are respectively hinged to the slider (1504) and the force plate (1507). The slider (1504) is installed with a storage tube (1508), and a cleaning pad is installed on the storage tube (1508), and the cleaning pad is in contact with the visual locator (13).

7. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 6 is characterized by: The oil-proof utilization component (15) further comprises a working cylinder (1509), a piston (1510), an aspirating agent chamber (1511), an aspirating agent chamber (1512), a transmission rod (1513), a sliding hole (1514), a connecting plate (1515), an aspirating agent box (1516), an aspirating agent tube (1517), an aspirating agent tube (1518), an aspirating agent tube (1519), and a reflux tube (1520); A working cylinder (1509) and a drug storage box (1516) are installed on one side of the anti-leakage box (2). A piston (1510) is slidably installed in the working cylinder (1509). The piston (1510) forms a drug suction chamber (1511) and a drug delivery chamber (1512) in the working cylinder (1509). A transmission rod (1513) is installed on the piston (1510). A sliding hole (1514) is provided at the top of the drug suction chamber (1511). The transmission rod (1513) passes through the sliding hole (1514). The upper end of the transmission rod (1513) is in contact with the transmission chamber (1512). The top of the moving shaft (1418) is connected via a connecting plate (1515), the input end of the delivery chamber (1512) is connected to the storage box (1516) via an aspiration tube (1517), and the output end of the delivery chamber (1512) is connected to the input end of the storage tube (1508) via the delivery tube (1518), the input end of the aspiration chamber (1511) is connected to the output end of the storage tube (1508) via a return tube (1519), and the output end of the aspiration chamber (1511) is connected to the storage box (1516) via a reflux tube (1520).

8. The fully automatic oil pollution prevention device for wellhead used in oilfield underground operations according to claim 7 is characterized by: The drug suction tube (1517), drug delivery tube (1518), drug return tube (1519) and reflux tube (1520) are all one-way tubes.

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