An online detection device for water content in crude oil

Abstract

The invention belongs to the technical field of testing the water content of petroleum, and specifically is an online detection device for the water content of crude oil, comprising a calibration seat, a detection tube is fixedly connected to one side of the calibration seat, a calibration instrument is fixedly connected to one side of the detection tube, a standard instrument is fixedly connected to one side of the detection tube, and the standard instrument is used to test the calibration instrument; the invention injects crude oil and other solvents such as water into a mixing cylinder through an oil pipeline and a diversion pipe, so that the petroleum sample liquid can be discharged from the mixing cylinder faster and flow to the detection tube through an oil outlet pipe, and the water content of the petroleum sample liquid flowing through the detection tube is tested by a standard instrument and a calibration instrument, so that the petroleum sample liquid flowing out of the detection tube can be comprehensively tested, the test speed of the water content in the calibration petroleum is accelerated, the calibration instrument and the standard instrument can test the petroleum sample liquid with the same water content to obtain accurate data difference, ensure that the calibration instrument is corrected according to the data deviation later, simplify the test process of the water content of the petroleum, and improve the calibration efficiency of the calibration instrument.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum water content testing, in particular to an online detection device for crude oil water content. Background Art

[0002] The water content of petroleum refers to the ratio of the volume of associated water in petroleum to the volume of the oil-water mixture. It is an indicator that is focused on during petroleum extraction, dehydration, storage, transportation, sales and refining. If the measurement results of the water content of petroleum are inaccurate, it will affect the decision-making of process control during the production process and cause inaccurate process control. At present, it is necessary to conduct larger-scale and more comprehensive tests on petroleum to make the verification of the water content of petroleum more accurate and make the verification process automated and intelligent.

[0003] A patent with publication number CN208334372U discloses an online detection device for water content in crude oil, including an oil pipeline, a water content detector fixed in a detection box, a drainage port coaxial with the transition cylinder is provided on the bottom plate of the detection box, the inner edge of the rubber ring is in sliding sealing contact with the outer edge of the movable rod, a baffle is fixed at the lower end of the movable rod, a spring is sleeved on the movable rod between the baffle and the bottom plate of the transition cylinder, and the transition cylinder and the oil pipeline are connected through a return pipe; this solution stores crude oil in the detection box, thereby increasing the accuracy of the detection result of the water content detector, and at the same time, the water content detector can be cleaned regularly to extend its service life.

[0004] The above scheme transports the petroleum sample liquid to the circulation module through an air pump, etc., inserts the precise tester and the tester to be tested into the petroleum sample liquid to perform a fixed-point test on the petroleum sample liquid, and can only test the water content of the petroleum sample liquid that is in contact with the inserted part of the tester. When testing the water content of the petroleum, it is impossible to fully test the water content of the proportioned petroleum sample liquid, resulting in a problem that the water content data tested by the precise tester and the tester to be tested are deteriorated, which will affect the subsequent process of correcting the tester to be tested according to the data deviation, so that the tester to be tested is not calibrated to the standard value and the water content of the petroleum cannot be tested.

[0005] To this end, the present invention provides an online detection device for the water content of crude oil. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the crude oil water content online detection device described in the present invention comprises a calibration seat, two mixing cylinders are fixedly connected to the calibration seat, a detection tube is fixedly connected to one side of the detection tube, a calibration instrument is fixedly connected to one side of the detection tube, a standard instrument is fixedly connected to one side of the detection tube, and the standard instrument is used to test the calibration instrument. The two mixing cylinders are connected by a shunt pipe, a three-way valve is fixedly connected to the shunt pipe, and an oil pipeline is fixedly connected to one side of the three-way valve. A mixing device is arranged in each of the two mixing cylinders, and the mixing device comprises a fixed A first cylinder is connected to one side of the mixing barrel, and an output end of the first cylinder passes through the mixing barrel and extends into the mixing barrel. A pushing block is fixedly connected to the output end of the first cylinder, and a rotating block is rotatably connected to one side of the pushing block. The pushing block and the rotating block are slidably connected to the mixing barrel. A bottom block is fixedly connected to the bottom of the mixing barrel, and an oil outlet valve is slidably connected to the bottom block. An oil outlet pipe is fixedly connected to the lower side of the bottom block, and a fixed frame is fixedly connected to the oil outlet pipe. A first motor is fixedly connected to the fixed frame, and a fixed barrel is fixedly connected to a plurality of stirring blades.

[0008] Preferably, the diverter pipes are arranged obliquely, and the diverter pipes are inserted obliquely into the two mixing cylinders.

[0009] Preferably, the contacting surface of the bottom block with the stirring blade is arranged as an inclined surface, the plurality of stirring blades are slidably connected with the bottom block, and one side of the plurality of stirring blades is arranged in a spatula shape.

[0010] Preferably, a plurality of cleaning devices are provided in the rotating block, and the plurality of cleaning devices are used to clean the remaining petroleum on the stirring blades. The cleaning devices include a cleaning block slidably connected in the rotating block, and the cleaning block can slide on the stirring blades to clean the remaining petroleum on the stirring blades.

[0011] Preferably, a threaded block is slidably connected in the rotating block, a fixed rod is fixed in the threaded block, the fixed rod is slidably connected to the cleaning block, a second spring is sleeved on the fixed rod, one end of the second spring is fixedly connected to the cleaning block, and the other end of the second spring is fixedly connected to the threaded block.

[0012] Preferably, two fixed plates are fixedly connected to one side of the rotating block, a threaded rod is rotatably connected between the two fixed plates, the threaded rod is threadedly connected to the threaded block, a gear is fixedly connected to one side of the threaded rod, a ring gear is fixedly connected to one side of the pushing block, and the gear is meshingly connected to the ring gear.

[0013] Preferably, the mixing device also includes a threaded cylinder slidably connected in the fixed cylinder, the threaded cylinder is slidably connected to the rotating block, a threaded groove is opened in the pushing block, the threaded cylinder and the pushing block are threadedly connected through the threaded groove, a pushing block is slidably connected in the threaded groove, a telescopic cylinder is fixedly connected to one side of the pushing block, the threaded cylinder is used to push the pushing block, a fixed column is fixedly connected in the fixed cylinder, a first spring is sleeved on the fixed column, one end of the first spring is fixedly connected to the fixed column, and the other end of the first spring is fixedly connected to the threaded cylinder.

[0014] Preferably, both sides of the threaded cylinder are fixedly connected with limit blocks, and the two limit blocks are slidably connected to the fixed cylinder.

[0015] Preferably, a slot is provided on one side of the cleaning block, a second cylinder is fixedly connected to one side of the rotating block, a block is fixedly connected to an output end of the second cylinder, and the block can be inserted into the slot.

[0016] Preferably, a scraping block is fixedly connected to one side of the threaded block, and an oil scraping block is fixedly connected to one side of the scraping block. The oil scraping block can slide on the scraping surface of the stirring blade, and sliding grooves are provided on both sides of the cleaning block. Slide blocks are fixedly connected to both sides of the oil scraping block, and both slide blocks are slidably connected to the sliding grooves.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The device for online detection of the water content of crude oil described in the present invention injects crude oil and other solvents such as water into a mixing cylinder through an oil pipeline and a diversion pipe. After the petroleum sample liquid is fully mixed, the petroleum sample liquid in the mixing cylinder is discharged from the mixing cylinder through an oil outlet valve, so that the petroleum sample liquid can be discharged from the mixing cylinder faster and flow to the detection tube through the oil outlet pipe. The water content of the petroleum sample liquid flowing through the detection tube is tested by a standard instrument and a calibration instrument, so that the mixed petroleum sample liquid can be quickly and completely discharged from the mixing cylinder, and the petroleum sample liquid flowing out of the detection tube is comprehensively tested, thereby accelerating the test speed of the water content in the calibration oil, allowing the petroleum sample liquid to continuously flow into the detection tube to be tested by the calibration instrument and the standard instrument for the water content in the petroleum, so that the calibration instrument and the standard instrument can test the petroleum sample liquid with the same water content to obtain accurate data difference, thereby ensuring that the calibration instrument is subsequently corrected according to the data deviation, simplifying the test process of the water content in the petroleum, and improving the calibration efficiency of the calibration instrument.

[0019] 2. The device for online detection of the water content in crude oil described in the present invention moves the rotating block downward and presses the stirring blade to fit the stirring blade. The bottom block provided with an inclined surface can enable the petroleum sample liquid to be quickly discharged through the oil outlet valve. The stirring blade continuously rotates to scrape the inclined surface of the bottom block when discharging the petroleum sample liquid. The petroleum sample liquid on the surface of the rotating block pressed on the stirring blade can also be scraped off, so that the petroleum sample liquid can be discharged from the mixing cylinder as much as possible, reducing the residual petroleum sample liquid in the mixing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the detector of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the mixing cylinder of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the bottom block of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the fixed cylinder of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the push block of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the rotating block of the present invention;

[0028] Figure 8 It is a schematic diagram of the cleaning block structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the oil scraper block of the present invention;

[0030] In the figure: 1, calibration seat; 2, three-way valve; 3, mixing cylinder; 4, first cylinder; 5, shunt pipe; 6, detection tube; 7, calibrator; 8, push block; 9, rotating block; 10, bottom block; 11, stirring blade; 12, oil outlet valve; 13, fixed cylinder; 14, threaded cylinder; 15, oil outlet pipe; 16, fixed frame; 17, first motor; 18, fixed column; 19, first spring; 20, limit block; 21, ring gear; 22, fixed plate; 23, threaded rod; 24, gear; 25, threaded block; 26, cleaning block; 27, card slot; 28, threaded groove; 29, push block; 30, telescopic cylinder; 31, fixed rod; 32, second spring; 33, scraper block; 34, oil scraper block; 35, slide groove; 36, slide block; 37, second cylinder; 38, card block; 39, oil pipeline, 40 standard instrument. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1

[0033] like Figures 1 to 5As shown, an online detection device for the water content of crude oil described in an embodiment of the present invention comprises a calibration seat 1, two mixing cylinders 3 are fixedly connected to the calibration seat 1, a detection tube 6 is fixedly connected to one side of the calibration seat 1, a calibration instrument 7 is fixedly connected to one side of the detection tube 6, a standard instrument 40 is fixedly connected to one side of the detection tube 6, and the standard instrument 40 is used to test the calibration instrument 7, the two mixing cylinders 3 are connected by a shunt pipe 5, a three-way valve 2 is fixedly connected to the shunt pipe 5, and an oil delivery pipe 39 is fixedly connected to one side of the three-way valve 2, and a mixing device is arranged in each of the two mixing cylinders 3, and the mixing device comprises a first cylinder 4 fixedly connected to one side of the mixing cylinder 3, The output end of the first cylinder 4 passes through the mixing barrel 3 and extends into the mixing barrel 3. A pushing block 8 is fixedly connected to the output end of the first cylinder 4. A rotating block 9 is rotatably connected to one side of the pushing block 8. The pushing block 8 and the rotating block 9 are slidably connected to the mixing barrel 3. A bottom block 10 is fixedly connected to the bottom of the mixing barrel 3. An oil outlet valve 12 is slidably connected to the bottom block 10. An oil outlet pipe 15 is fixedly connected to the lower side of the bottom block 10. A fixing frame 16 is fixedly connected to the oil outlet pipe 15. A first motor 17 is fixedly connected to the fixing barrel 13. A plurality of stirring blades 11 are fixedly connected to the fixing barrel 13.

[0034] Specifically, when calibrating the petroleum water content tester, water or other solvents are mixed with crude oil to obtain a petroleum sample liquid, the sample petroleum is injected into the circulation module and the temperature control module for circulation, and the water content in the petroleum sample liquid is detected by using an accurate tester, and then the tested petroleum sample liquid is sent to the tester to be calibrated for testing. By comparing the data between the accurate tester and the tester to be calibrated, the tester to be calibrated can be adjusted and repaired according to the difference in data. After the accurate tester and the tester to be calibrated have detected the water content in the petroleum, the petroleum sample liquid should be discharged from each module, and petroleum with different water contents should be re-added, so that the accurate tester and the tester to be calibrated can detect multiple petroleum sample liquids with different water contents, so as to The data deviation between the tester to be tested and the accurate tester can be accurately determined, and the tester to be tested can be adjusted and repaired more accurately and quickly. At present, the petroleum sample liquid is transported to the circulation module through a vacuum pump, and the accurate tester and the tester to be tested are inserted into the petroleum sample liquid to perform a fixed-point test on the petroleum sample liquid. Moreover, only the water content of the petroleum sample liquid contacted by the inserted part of the tester can be tested. When testing the water content of the petroleum, the water content of the petroleum sample liquid after the proportioning cannot be fully tested, resulting in a deviation in the water content data tested by the accurate tester and the tester to be tested, which will affect the subsequent process of correcting the tester to be tested according to the data deviation. The tester to be tested has not been calibrated to the standard value, and the water content of the petroleum cannot be tested.

[0035] When mixing and configuring the petroleum sample liquid, crude oil and other solvents such as water are injected into the mixing cylinder 3 through the oil delivery pipe 39 and the diverter pipe 5, and the petroleum sample liquid is injected into one mixing cylinder 3 through the three-way valve 2, and the first motor 17 is started to rotate the fixed cylinder 13 with the stirring blade 11 to stir and mix the petroleum sample liquid in the mixing cylinder 3. When one mixing cylinder 3 is filled with the petroleum sample liquid, the three-way valve 2 is started to send the crude oil and the solvent into another mixing cylinder 3 through the diverter pipe 5. After the petroleum sample liquid is fully mixed, the oil outlet valve 12 is opened and the first cylinder 4 is started to move the push block 8 with the rotating block 9 downward, and the petroleum sample liquid in the mixing cylinder 3 is discharged from the mixing cylinder 3 through the oil outlet valve 12. At this time, the fixed cylinder 13 still rotates with the stirring blade 11 to shape the petroleum sample liquid in the mixing cylinder 3 The oil sample liquid is formed into a vortex state, so that the oil sample liquid can be discharged from the mixing cylinder 3 faster and flow to the detection tube 6 through the oil outlet pipe 15. The water content of the oil sample liquid flowing through the detection tube 6 is tested by the standard instrument 40 and the calibration instrument 7, and the mixed oil sample liquid can be quickly and completely discharged from the mixing cylinder 3, and the oil sample liquid flowing out of the detection tube 6 is comprehensively tested, which speeds up the test speed of the water content in the oil, so that the oil sample liquid can continuously flow into the detection tube 6 to be tested by the calibration instrument 7 and the standard instrument 40 for the water content in the oil, so that the calibration instrument 7 and the standard instrument 40 can test the oil sample liquid with the same water content to obtain accurate data difference, thereby ensuring that the calibration instrument 7 is corrected according to the data deviation later, simplifying the test process of the oil water content, and improving the calibration efficiency of the calibration instrument 7.

[0036] like Figure 1 As shown, the diverter pipe 5 is arranged obliquely, and the diverter pipe 5 is inserted into the two mixing cylinders 3 obliquely.

[0037] Specifically, when the petroleum sample liquid is injected into the mixing cylinder 3, the petroleum sample liquid is tiltedly injected into the mixing cylinder 3 through the tilted diverter pipe 5, so that the petroleum sample liquid forms a vortex to accelerate the stirring and mixing process of the petroleum sample liquid.

[0038] like Figure 3 As shown, the contacting surface of the bottom block 10 and the stirring blade 11 is set as an inclined surface, the plurality of stirring blades 11 are slidably connected to the bottom block 10, and one side of the plurality of stirring blades 11 is set as a spatula.

[0039] Specifically, when the proportioned petroleum sample liquid is discharged, the problem of not being able to be discharged completely will occur. Since the proportioned petroleum sample liquid has different viscosities, the remaining petroleum sample liquid will affect the next test of the water content of petroleum, resulting in errors in the results of the test of the water content of petroleum by the calibration instrument 7 and the standard instrument 40;

[0040] When the petroleum sample liquid in the mixing cylinder 3 is discharged, the rotating block 9 will move downward and press the stirring blade 11 to fit with the stirring blade 11. By providing the bottom block 10 with an inclined surface, the petroleum sample liquid can be quickly discharged through the oil outlet valve 12, and the stirring blade 11 continues to rotate to scrape the inclined surface of the bottom block 10 when discharging the petroleum sample liquid. The petroleum sample liquid on the surface of the rotating block 9 pressed on the stirring blade 11 can also be scraped off, so that the petroleum sample liquid can be discharged from the mixing cylinder 3 as much as possible, reducing the residual petroleum sample liquid in the mixing cylinder 3.

[0041] like Figure 6 As shown, a plurality of cleaning devices are arranged in the rotating block 9, and the plurality of cleaning devices are used to clean the remaining oil on the stirring blade 11. The cleaning devices include a cleaning block 26 slidably connected in the rotating block 9, and the cleaning block 26 can slide on the stirring blade 11 to clean the remaining oil on the stirring blade 11.

[0042] Specifically, after the petroleum sample liquid is discharged from the mixing cylinder 3, the cleaning block 26 can slide on the stirring blade 11 to scrape off the petroleum sample liquid remaining on the stirring blade 11, thereby reducing the influence of the residual petroleum sample liquid in the mixing cylinder 3 on the petroleum water content test result.

[0043] like Figure 7 As shown, a threaded block 25 is slidably connected inside the rotating block 9, a fixed rod 31 is fixed inside the threaded block 25, the fixed rod 31 is slidably connected to the cleaning block 26, a second spring 32 is sleeved on the fixed rod 31, one end of the second spring 32 is fixedly connected to the cleaning block 26, and the other end of the second spring 32 is fixedly connected to the threaded block 25.

[0044] Specifically, when scraping off the residual petroleum on the stirring blade 11, the lower end of the cleaning block 26 will be pressed against the inclined surface of the bottom block 10, and the cleaning block 26 will gradually slide on the stirring blade 11 so that the cleaning block 26 will gradually move downward through the fixing rod 31. During this process, the second spring 32 always remains in a compressed state, so that the cleaning block 26 can continue to press against the inclined surface of the bottom block 10 to scrape off the residual petroleum sample liquid on the surface of the stirring blade 11 as much as possible.

[0045] like Figures 6 to 8 As shown, two fixed plates 22 are fixedly connected to one side of the rotating block 9, a threaded rod 23 is rotatably connected between the two fixed plates 22, the threaded rod 23 is threadedly connected to the threaded block 25, a gear 24 is fixedly connected to one side of the threaded rod 23, a ring gear 21 is fixedly connected to one side of the pushing block 8, and the gear 24 is meshingly connected to the ring gear 21.

[0046] Specifically, when the sliding cleaning block 26 scrapes the stirring blade 11, the rotating block 9 rotates with the gear 24, causing the gear 24 to rotate through the ring gear 21. The rotation of the gear 24 drives the threaded rod 23 to rotate, causing the threaded block 25 to slide in the rotating block 9. The threaded block 25 slides in the rotating block 9 and slides with the cleaning block 26 to scrape off the petroleum sample liquid remaining on the stirring blade 11.

[0047] like Figure 5 As shown, the mixing device also includes a threaded cylinder 14 slidably connected in the fixed cylinder 13, the threaded cylinder 14 is slidably connected to the rotating block 9, a threaded groove 28 is provided in the pushing block 8, the threaded cylinder 14 is threadedly connected to the pushing block 8 through the threaded groove 28, a pushing block 29 is slidably connected in the threaded groove 28, a telescopic cylinder 30 is fixedly connected to one side of the pushing block 29, the threaded cylinder 14 is used to push the pushing block 29, a fixed column 18 is fixedly connected in the fixed cylinder 13, a first spring 19 is sleeved on the fixed column 18, one end of the first spring 19 is fixedly connected to the fixed column 18, and the other end of the first spring 19 is fixedly connected to the threaded cylinder 14.

[0048] Specifically, when the rotating block 9 moves downward to discharge the petroleum sample liquid in the mixing cylinder 3, the pushing block 8 and the rotating block 9 move downward to allow the threaded cylinder 14 to enter the rotating block 9 and press against the pushing block 8. At this time, the threaded cylinder 14 moves downward through the fixed column 18 and compresses the first spring 19. At this time, the first motor 17 rotates the fixed cylinder 13 to rotate the threaded cylinder 14, and rotates the threaded cylinder 14 into the pushing block 8, so that the threaded cylinder 14 pushes the pushing block 29 to move upward, so that the telescopic cylinder 30 is moved out of the rotating block 9, so that the rotating block 9 can rotate to allow the cleaning block 26 to move on the stirring blade 11 for scraping.

[0049] like Figure 5 As shown, both sides of the threaded cylinder 14 are fixedly connected with limit blocks 20 , and the two limit blocks 20 are slidably connected to the fixed cylinder 13 .

[0050] Specifically, the limiting block 20 slides in the fixed tube 13 to limit the sliding of the threaded tube 14 in the fixed tube 13 , thereby preventing the threaded tube 14 from sliding out of the fixed tube 13 and ensuring that the threaded tube 14 can push the pushing block 29 normally.

[0051] like Figure 7 As shown, a slot 27 is provided on one side of the cleaning block 26 , a second cylinder 37 is fixedly connected to one side of the rotating block 9 , a block 38 is fixedly connected to the output end of the second cylinder 37 , and the block 38 can be inserted into the slot 27 .

[0052] Specifically, when the rotating block 9 is pressed against the stirring blade 11, the stirring blade 11 first rotates to scrape the surface of the rotating block 9. When the threaded cylinder 14 moves the pushing block 29 upward to move the telescopic cylinder 30 out of the rotating block 9, the second cylinder 37 is started to move the blocking block 38 downward, so that the cleaning block 26 is stuck in the stirring blade 11 and pressed against the inclined surface of the bottom block 10. The stirring blade 11 can move the cleaning block 26 and thus move the rotating block 9, so that the cleaning block 26 can move on the stirring blade 11 to scrape the petroleum sample liquid on the stirring blade 11.

[0053] Embodiment 2

[0054] like Figures 8 to 9 As shown in Comparative Example 1, another embodiment of the present invention is:

[0055] A scraping block 33 is fixedly connected to one side of the threaded block 25, and an oil scraping block 34 is fixedly connected to one side of the scraping block 33. The oil scraping block 34 can slide on the scraping surface of the stirring blade 11. Slide grooves 35 are provided on both sides of the cleaning block 26, and sliders 36 are fixedly connected to both sides of the oil scraping block 34. The two sliders 36 are slidably connected to the slide grooves 35.

[0056] Specifically, when the cleaning block 26 moves to scrape off the petroleum sample liquid remaining on the stirring blade 11, the cleaning block 26 drives the scraping block 33 and the oil scraping block 34 to move and scrape the blade surface of the stirring blade 11. When the cleaning block 26 completes scraping, it returns to the side close to the card block 38, and the card block 38 is re-engaged in the card slot 27. Then the second cylinder 37 is started to make the card block 38 move upward with the cleaning block 26, so that the stirring blade 11 rotates normally. Through the limitation of the slider 36 in the slide slot 35, the oil scraping block 34 can move upward together with the cleaning block 26.

[0057] Working principle: When mixing and configuring petroleum sample liquid, crude oil and other solvents such as water are injected into the mixing cylinder 3 through the oil delivery pipe 39 and the diverter pipe 5, and the petroleum sample liquid is injected into one mixing cylinder 3 through the three-way valve 2, and the first motor 17 is started to make the fixed cylinder 13 rotate with the stirring blade 11 to stir and mix the petroleum sample liquid in the mixing cylinder 3. When one mixing cylinder 3 is filled with petroleum sample liquid, the three-way valve 2 is started to send the crude oil and solvent into another mixing cylinder 3 through the diverter pipe 5. After the petroleum sample liquid is fully mixed, the oil outlet valve 12 is opened and the first cylinder 4 is started to push the cylinder 13 to rotate. The pressing block 8 moves downward with the rotating block 9, and the petroleum sample liquid in the mixing cylinder 3 is discharged from the mixing cylinder 3 through the oil outlet valve 12. At this time, the fixed cylinder 13 still rotates with the stirring blade 11 to make the petroleum sample liquid in the mixing cylinder 3 form a vortex state, so that the petroleum sample liquid can be discharged from the mixing cylinder 3 faster and flow to the detection tube 6 through the oil outlet pipe 15. The water content of the petroleum sample liquid flowing through the detection tube 6 is tested by the standard instrument 40 and the calibration instrument 7, so that the mixed petroleum sample liquid can be quickly and completely discharged from the mixing cylinder 3, and the petroleum sample liquid flowing out of the detection tube 6 can be comprehensively tested;

[0058] When injecting the petroleum sample liquid into the mixing cylinder 3, the petroleum sample liquid is tiltedly injected into the mixing cylinder 3 through the obliquely arranged shunt pipe 5, so that the petroleum sample liquid forms a vortex to accelerate the stirring and mixing process of the petroleum sample liquid; the rotating block 9 will move downward and press the stirring blade 11 to fit the stirring blade 11, and the petroleum sample liquid can be quickly discharged through the oil outlet valve 12 through the bottom block 10 provided with an inclined surface, and the stirring blade 11 continues to rotate when discharging the petroleum sample liquid to scrape the inclined surface of the bottom block 10, and can also scrape the petroleum sample liquid on the surface of the rotating block 9 pressed on the stirring blade 11; after the petroleum sample liquid is discharged from the mixing cylinder 3, the cleaning block 26 is slid on the stirring blade 11 to scrape the stirring blade 11 The lower end of the cleaning block 26 will press against the inclined surface of the bottom block 10, and the cleaning block 26 will gradually slide on the stirring blade 11 so that the cleaning block 26 will gradually move downward through the fixed rod 31. During the process, the second spring 32 always remains in a compressed state, so that the cleaning block 26 can continue to press against the inclined surface of the bottom block 10, thereby scraping off the residual petroleum sample liquid on the surface of the stirring blade 11 as much as possible; the rotating block 9 rotates with the gear 24, so that the gear 24 rotates through the ring gear 21, and the rotation of the gear 24 drives the threaded rod 23 to rotate so that the threaded block 25 slides in the rotating block 9, and the threaded block 25 slides in the rotating block 9 to slide with the cleaning block 26 to scrape off the residual petroleum sample liquid on the stirring blade 11;

[0059] When the rotating block 9 moves downward to discharge the petroleum sample liquid in the mixing cylinder 3, the pushing block 8 and the rotating block 9 move downward to make the threaded cylinder 14 enter the rotating block 9 and press on the pushing block 8. At this time, the threaded cylinder 14 moves downward through the fixed column 18 and compresses the first spring 19. At this time, the first motor 17 rotates with the fixed cylinder 13 to make the threaded cylinder 14 rotate, and the threaded cylinder 14 is rotated into the pushing block 8, so that the threaded cylinder 14 pushes the pushing block 29 to move upward, so that the telescopic cylinder 30 is moved out of the rotating block 9, so that the rotating block 9 can be rotated to make the cleaning block 26 move on the stirring blade 11 to scrape; the sliding of the threaded cylinder 14 in the fixed cylinder 13 is limited by the limit block 20, so that the threaded cylinder 14 is prevented from sliding out of the fixed cylinder 13, and it is ensured that the threaded cylinder 14 can push the pushing block 29 normally; when the rotating block 9 is pressed on the stirring blade 11, the stirring blade 11 first rotates to scrape the surface of the rotating block 9, and when the threaded cylinder 14 is rotated, the cleaning block 26 is moved upward to scrape the cleaning block 26 on the stirring blade 11. When the cylinder 14 moves upward with the pushing block 29 to make the telescopic cylinder 30 move out of the rotating block 9, the second cylinder 37 is started to make the blocking block 38 move downward, so that the cleaning block 26 is stuck in the stirring blade 11 and pressed against the inclined surface of the bottom block 10, and the cleaning block 26 can be moved by the stirring blade 11 to move with the rotating block 9, so that the cleaning block 26 can move on the stirring blade 11 to scrape the petroleum sample liquid on the stirring blade 11; when the cleaning block 26 moves to scrape the residual petroleum sample liquid on the stirring blade 11, the cleaning block 26 drives the scraping block 33 and the oil scraping block 34 to move to scrape the blade surface of the stirring blade 11, and when the cleaning block 26 completes the scraping, it returns to the side close to the blocking block 38, and the blocking block 38 is re-stuck in the card slot 27, and the second cylinder 37 is started again to make the blocking block 38 move upward with the cleaning block 26, so that the stirring blade 11 rotates normally, and the oil scraping block 34 can move upward with the cleaning block 26 through the limit of the slider 36 in the slide slot 35.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An online detection device for water content in crude oil, characterized by: Including the calibration seat, the calibration seat is fixed Two mixing cylinders are connected, a detection tube is fixedly connected to one side of the calibration seat, a calibration instrument is fixedly connected to one side of the detection tube, a standard instrument is fixedly connected to one side of the detection tube, and the standard instrument is used to test the calibration instrument. The two mixing cylinders are connected by a shunt tube, a three-way valve is fixedly connected to the shunt tube, an oil delivery pipe is fixedly connected to one side of the three-way valve, and a mixing device is arranged in both mixing cylinders, the mixing device comprises a first cylinder fixedly connected to one side of the mixing cylinder, an output end of the first cylinder passes through the mixing cylinder and extends into the mixing cylinder, a pushing block is fixedly connected to the output end of the first cylinder, a rotating block is rotatably connected to one side of the pushing block, the pushing block and the rotating block are slidably connected to the mixing cylinder, a bottom block is fixedly connected to the bottom of the mixing cylinder, an oil outlet valve is slidably connected in the bottom block, an oil outlet pipe is fixedly connected to the lower side of the bottom block, a fixed frame is fixedly connected in the oil outlet pipe, a first motor is fixedly connected in the fixed frame, a fixed cylinder is fixedly connected to the output end of the first motor, and a plurality of stirring blades are fixedly connected to the fixed cylinder; A plurality of cleaning devices are arranged in the rotating block, and the plurality of cleaning devices are used to clean the remaining oil on the stirring blades. The cleaning devices include a cleaning block slidably connected in the rotating block, and the cleaning block can slide on the stirring blades to clean the remaining oil on the stirring blades. A threaded block is slidably connected in the rotating block, a fixed rod is fixed in the threaded block, the fixed rod is slidably connected to the cleaning block, a second spring is sleeved on the fixed rod, one end of the second spring is fixedly connected to the cleaning block, and the other end of the second spring is fixedly connected to the threaded block; One side of the rotating block is fixedly connected to two fixed plates, a threaded rod is rotatably connected between the two fixed plates, the threaded rod is threadedly connected to the threaded block, one side of the threaded rod is fixedly connected to a gear, one side of the pushing block is fixedly connected to a ring gear, and the gear is meshed with the ring gear; The mixing device also includes a threaded cylinder slidably connected in the fixed cylinder, the threaded cylinder is slidably connected to the rotating block, a threaded groove is opened in the pushing block, the threaded cylinder and the pushing block are threadedly connected through the threaded groove, a pushing block is slidably connected in the threaded groove, a telescopic cylinder is fixedly connected to one side of the pushing block, and the threaded cylinder is used to push the pushing block.

2. An online detection device for water content in crude oil according to claim 1, characterized in that: The diverter pipes are arranged obliquely and are inserted obliquely into the two mixing cylinders.

3. An online detection device for water content in crude oil according to claim 2, characterized in that: The contacting surface of the bottom block with the stirring blade is arranged as an inclined surface, the plurality of stirring blades are slidably connected with the bottom block, and one side of the plurality of stirring blades is arranged as a spatula.

4. An online detection device for water content in crude oil according to claim 1, characterized in that: A fixing column is fixedly connected in the fixing cylinder, a first spring is sleeved on the fixing column, one end of the first spring is fixedly connected to the fixing column, and the other end of the first spring is fixedly connected to the threaded cylinder.

5. An online detection device for water content in crude oil according to claim 4, characterized in that: Limit blocks are fixedly connected to both sides of the threaded cylinder, and the two limit blocks are slidably connected to the fixed cylinder.

6. An online detection device for water content in crude oil according to claim 1, characterized in that: A clamping groove is provided on one side of the cleaning block, a second cylinder is fixedly connected to one side of the rotating block, a clamping block is fixedly connected to the output end of the second cylinder, and the clamping block can be clamped into the clamping groove.

7. An online detection device for water content in crude oil according to claim 6, characterized in that: A scraping block is fixedly connected to one side of the threaded block, and an oil scraping block is fixedly connected to one side of the scraping block. The oil scraping block can slide on the scraping surface of the stirring blade. Slide grooves are opened on both sides of the cleaning block, and sliders are fixedly connected to both sides of the oil scraping block. Both sliders are slidably connected to the slide grooves.

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