Oil field polymer solution preparation skid-mounted equipment and use method

Abstract

The invention relates to the technical field of static mixing, and discloses oilfield polymer solution preparation skid-mounted equipment and a using method thereof, the oilfield polymer solution preparation skid-mounted equipment comprises a closed outer cylinder, a fixed top cover, a liquid outlet pipe, a fixed inner cylinder, a feeding conical frame, a fixed partition plate and the like; a fixed top cover and a feeding conical frame are fixedly connected to the top of the closed outer cylinder, a fixed partition plate is fixedly connected to the bottom in the feeding conical frame, a through hole is formed in the fixed partition plate, a fixed inner cylinder is fixedly connected to the interior of the closed outer cylinder through the feeding conical frame, a liquid outlet pipe is fixedly connected to the bottom of the closed outer cylinder, and a liquid inlet guide frame is fixedly connected to the bottom of the fixed partition plate. According to the device, liquid is statically mixed through a plurality of layers of mechanisms with different structures, namely the liquid inlet guide frame, the conical flow gathering frame and the flow mixing frame, and the flowing state of the liquid is interfered through different structures, so that the liquid is quickly subjected to a plurality of separation-displacement-mixing processes in a short stroke, and the liquid can be quickly, efficiently and uniformly mixed together.

Description

Technical Field

[0001] The invention relates to the technical field of static mixing, and in particular to skid-mounted equipment for preparing oilfield polymer solutions and a use method thereof. Background Art

[0002] Polymer flooding technology is one of the most important technologies for improving oil recovery. It has been promoted and applied in oil fields and has achieved good economic and social benefits.

[0003] In the existing technology, water jet polymer dispersing and dissolving devices are mainly used to disperse and dissolve polymers. Existing polymer dispersing and dissolving devices suffer from unsatisfactory mixing of polymer dry powder, insufficient dissolution, and the proneness to "fish eyes" and bubbles, which affect the effectiveness of polymer displacement. For the polymer solution maturation process, the main method currently used is a maturation tank stirring and maturation process. This process has problems such as a large number of maturation tanks, high investment in ground equipment, large floor space, long maturation time, low work efficiency, and difficulty in moving equipment. Furthermore, the stirring process can easily cause polymer molecular chains to break, resulting in a decrease in the viscosity of the polymer solution.

[0004] The present invention provides a skid-mounted device for preparing oilfield polymer solutions. By distributing structures such as a control room on different skids for easy mobility, the dry powder is dissolved and then statically mixed to prepare the oilfield polymer. The static mixing can supply liquid in real time, reducing the mixing time, thereby solving technical problems such as the large footprint, long maturation time, low work efficiency, difficulty in moving the equipment, and easy breakage of polymer molecular chains during the stirring process of the existing configuration method. Summary of the Invention

[0005] The present invention provides a skid-mounted device for preparing oilfield polymer solutions and a method for using the same, in order to solve technical problems such as the large footprint, long curing time, low working efficiency, difficulty in moving the equipment, and easy breakage of polymer molecular chains during the stirring process of the existing configuration.

[0006] The technical solution of the present invention is: a skid-mounted equipment for preparing oilfield polymer solutions and a method of use, comprising a closed outer cylinder, a fixed top cover, a liquid outlet pipe, a fixed inner cylinder, a feed cone frame, a fixed partition, a liquid inlet guide frame, a conical flow collecting frame, a conical liquid guide cylinder and a static mixing mechanism, wherein the top of the closed outer cylinder is fixedly connected to the fixed top cover, the top of the closed outer cylinder is fixedly connected to the feed cone frame, the bottom of the feed cone frame is fixedly connected to the fixed partition, the closed outer cylinder is fixedly connected to the fixed inner cylinder through the feed cone frame, the bottom of the closed outer cylinder is fixedly connected to the liquid outlet pipe, the bottom of the fixed partition is fixedly connected to the liquid inlet guide frame, the fixed inner cylinder is fixedly connected to the conical flow collecting frame, the bottom of the fixed inner cylinder is fixedly connected to the conical liquid guide cylinder, the conical liquid guide cylinder is connected to the liquid outlet pipe, the mixed liquid flows outward through the conical liquid guide cylinder, the static mixing mechanism is installed in the fixed inner cylinder, and the liquid is evenly mixed after passing through the static mixing mechanism.

[0007] Preferably, the static mixing mechanism includes a partition plate, a shutoff plate, a mixing hole, a diversion assembly and a mixing assembly. A partition plate is fixedly connected to the liquid inlet guide frame, a shutoff plate is fixedly connected to the top of the partition plate, a mixing hole is opened on the partition plate, and the mixing hole is located at the connection between the shutoff plate and the partition plate.

[0008] Preferably, the diversion assembly includes a vertical guide tube, a diversion plate and a fixed inclined plate. The vertical guide tube is fixed to the bottom of the conical focusing frame, the diversion plate is fixed inside the vertical guide tube, and the fixed inclined plate is fixed inside the vertical guide tube.

[0009] Preferably, the mixing assembly includes a mixing frame and spiral guide vanes, the mixing frame is fixed in the fixed inner cylinder, the spiral guide vanes are fixed in the mixing frame, and the spiral guide vanes are staggered in the mixing frame.

[0010] Preferably, it also includes a fixed screen drum, a water injection pipe, a hydraulic impeller, a rotating frame, an outer gear ring, a powder silo, a powder conduit and a feeding assembly. The fixed screen drum is fixedly connected to the fixed partition, the water injection pipe is fixedly connected to the fixed top cover, the hydraulic impeller is rotatably connected in the water injection pipe, the rotating frame is rotatably connected in the water injection pipe, the rotating frame is fixed to the hydraulic impeller, the outer gear ring is fixed to the rotating frame, the powder conduit is fixed to the fixed top cover, the powder silo is fixed to the top of the powder conduit, the feeding assembly is installed in the fixed top cover and the feed cone frame, and the rotating frame drives the feeding assembly to operate when it rotates, so as to send the powder in the powder silo into the fixed screen drum through the powder conduit.

[0011] Preferably, the feeding assembly includes a transmission gear, a bevel gear transmission group, a feeding cam, a pump cylinder, a pressure piston, a pressure push rod, an air intake slide rod, a support spring, a feeding push rod, a rotating baffle, a rotating cam, an air filling pipe, a fixed ring, a sliding plug and a blocking spring. The feeding cone frame is rotatably connected to the transmission gear, the transmission gear is meshed with the outer gear ring, the closed outer cylinder is rotatably connected to the feeding cam, the feeding cam and the transmission gear are connected through the bevel gear transmission group, the fixed top cover is fixed with a pump cylinder, the side wall of the powder conduit is fixed with an air filling pipe, the other end of the air filling pipe is communicated with the pump cylinder, and the pump cylinder is slidably connected to the feeding cam. The pressurizing piston and the pressurizing push rod are rotatably connected at the eccentric part of the feeding cam, and the other end of the pressurizing push rod is rotatably connected to the pressurizing piston. An air intake slide is slidably connected in the pump cylinder, and the air intake slide passes through the fixed top cover and is slidably connected to it. A support spring is provided between the air intake slide and the fixed top cover. A rotating baffle is rotatably connected in the powder bin, and a rotating cam is fixed on the rotating shaft of the rotating baffle. The eccentric part of the rotating cam is rotatably connected to the feeding push rod, and the other end of the feeding push rod is rotatably connected to the air intake slide, a fixed ring is fixed in the air filling pipe, a sliding plug is slidably connected in the air filling pipe, and a sealing spring is provided between the sliding plug and the air filling pipe.

[0012] Preferably, it also includes stirring and breaking blades and a movable scraper. The stirring and breaking blades are fixedly connected to the rotating frame, the movable scraper is fixedly connected to the outer gear ring, and a soft brush is installed on the side of the movable scraper close to the outer wall of the fixed screen cylinder.

[0013] Preferably, a fixed block is further included, and the top of the fixed screen drum is fixedly connected with the fixed block, and the movable scraper rod can collide with the fixed block during the process of rotating with the outer gear ring.

[0014] Preferably, it also includes a belt transmission, an inflation cam, an inflation cylinder, an inflation piston, an inflation push rod, a three-way air pipe, an air inlet pipe and an air outlet pipe. The inflation cam is rotatably connected in the closed outer cylinder, the feeding cam and the inflation cam are connected by a belt transmission member, the inflation cylinder is fixedly connected between the closed outer cylinder and the fixed inner cylinder, the inflation cylinder is slidingly connected with the inflation piston, the inflation cam is rotatably connected to the inflation push rod at the eccentric part, the other end of the inflation push rod is rotatably connected to the inflation piston, the top of the inflation cylinder is fixedly connected to the three-way air pipe, the top outlet of the inflation cylinder is connected to the three-way air pipe, one end of the three-way air pipe is fixedly connected to the air inlet pipe, and the other end of the three-way air pipe is fixedly connected to the air outlet pipe.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The device statically mixes the liquid through multiple layers of different structural mechanisms such as the liquid inlet guide frame, the conical flow focusing frame, and the mixing frame, and interferes with the flow state of the liquid through different structures. In addition, the liquid will also be interactively mixed in the transition area between two adjacent layers, so that the liquid can quickly undergo multiple separation-displacement-mixing processes within a shorter stroke, and can quickly and efficiently mix the liquid evenly together.

[0016] 2. This device drives the hydraulic impeller and the rotating frame to rotate through high-pressure water flow. When the rotating frame rotates, the feeding assembly is driven to operate through the outer gear ring. The feeding assembly continuously adds air to the powder conduit, and the powder in the powder conduit is blown out through the airflow to prevent the powder from being stuck in the corner of the powder conduit. During the mixing process, the stirring and breaking up blades can stir the powder so that the powder can quickly dissolve in the water to form a solution. At the same time, it can also break up the clumped powder, and the sieve holes on the fixed screen drum can prevent the powder clumps from passing through, so as to prevent the powder clumps from entering the static mixing mechanism with the solution and clogging the equipment. The mobile scraper cleans the sieve holes of the fixed screen drum during the rotation of the outer gear ring, and can also drive the fixed screen drum to vibrate through the fixed block to prevent the sieve holes on the fixed screen drum from being blocked by powder clumps.

[0017] 3. This device combines dynamic mixing with static mixing. Different types of powders are added into the fixed sieve drum at the same time. The solution formed after mixing with water in the fixed sieve drum is preliminarily mixed before entering the static mixing mechanism to improve mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0019] Figure 2 It is a schematic diagram of the structure inside the closed outer cylinder of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the fixed inner cylinder of the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the liquid inlet guide frame of the present invention.

[0022] Figure 5 Schematic diagram of the structure of the spiral guide vane of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the fixed screen drum of the present invention.

[0024] Figure 7 This is a schematic structural diagram of the stirring and breaking up blades of the present invention.

[0025] Figure 8 It is a structural schematic diagram of the powder silo of the present invention.

[0026] Figure 9 It is a structural schematic diagram of the gas adding pipe of the present invention.

[0027] Figure 10 It is a schematic diagram of the cross-sectional structure of the inflation cylinder of the present invention.

[0028] Among them: 1. Closed outer cylinder, 1001. Fixed top cover, 1002. Liquid outlet pipe, 101. Fixed inner cylinder, 102. Feed cone frame, 1021. Fixed partition, 103. Liquid inlet guide frame, 1031. Separator, 1032. Interceptor, 1033. Mixing hole, 2. Conical flow focusing frame, 201. Vertical guide cylinder, 202. Diverter plate, 203. Fixed inclined plate, 3. Mixing flow frame, 301. Spiral guide vane, 302. Conical liquid guide cylinder, 4. Fixed screen cylinder, 4001. Fixed block, 401. Water injection pipe, 402. Hydraulic impeller, 403. Rotating frame, 404. External gear ring, 405. Powder silo, 4051. Powder guide tube, 406. Stirring and breaking up blades; 407. Moving scraper; 5. Transmission gear; 501. Bevel gear transmission group; 502. Feeding cam; 503. Pump cylinder; 504. Pressurizing piston; 505. Pressurizing push rod; 506. Inlet slide bar; 507. Support spring; 508. Feeding push rod; 509. Rotating baffle; 5091. Rotating cam; 510. Filling pipe; 511. Fixed ring; 512. Sliding plug; 513. Blocking spring; 6. Belt drive; 601. Inflating cam; 602. Inflating cylinder; 6021. Inflating piston; 603. Inflating push rod; 604. Three-way pipe; 6041. Inlet pipe; 6042. Outlet pipe. DETAILED DESCRIPTION

[0029] The following further describes the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0030] Example 1: A skid-mounted device for preparing an oilfield polymer solution and a method of use thereof, such as Figures 1-10 As shown, it includes a closed outer cylinder 1, a fixed top cover 1001, a liquid outlet pipe 1002, a fixed inner cylinder 101, a feed cone frame 102, a fixed partition 1021, a liquid feed guide frame 103, a conical flow collecting frame 2, a conical liquid guide cylinder 302 and a static mixing mechanism. The top of the closed outer cylinder 1 is fixedly connected to the fixed top cover 1001, the top of the closed outer cylinder 1 is fixedly connected to the feed cone frame 102, the bottom of the feed cone frame 102 is fixedly connected to the fixed partition 1021, a through hole is opened on the fixed partition 1021, the inner of the closed outer cylinder 1 is fixedly connected to the fixed inner cylinder 101 through the feed cone frame 102, the bottom of the closed outer cylinder 1 is fixedly connected to the liquid outlet pipe 1002, and the bottom of the fixed partition 1021 is fixed. It is connected to a liquid inlet guide frame 103, and the top inlet of the liquid inlet guide frame 103 is aligned with the through hole on the fixed partition 1021. The liquid enters the liquid inlet guide frame 103 through the through hole on the fixed partition 1021. A conical flow-gathering frame 2 is fixedly connected to the fixed inner cylinder 101. After the liquid flows into the fixed inner cylinder 101 through the liquid inlet guide frame 103, it is gathered together at the bottom of the conical flow-gathering frame 2. A conical liquid guiding tube 302 is fixedly connected to the bottom of the fixed inner cylinder 101. The conical liquid guiding tube 302 is connected to the liquid outlet pipe 1002. The mixed liquid flows out through the conical liquid guiding tube 302. The static mixing mechanism is installed in the fixed inner cylinder 101. The liquid is evenly mixed after passing through the static mixing mechanism.

[0031] This device mainly mixes liquids with liquids. The liquid to be mixed is added into the feed cone frame 102. The liquid is first preliminarily mixed on the top of the fixed partition 1021. The mixed liquid flows into the liquid inlet guide frame 103 through the through hole on the fixed partition 1021, and then flows into the conical focusing frame 2 in the fixed inner cylinder 101 through the liquid inlet guide frame 103, and finally flows downward from the liquid outlet pipe 1002 through the conical liquid guiding cylinder 302. The liquid to be mixed passes through the static mixing mechanism during its flow in the fixed inner cylinder 101. Under the action of the static mixing mechanism, the liquid is evenly mixed after multiple dispersions and convergences.

[0032] Example 2: Based on Example 1, Figure 2-Figure 5As shown, the static mixing mechanism includes a partition plate 1031, a shutoff plate 1032, a mixing hole 1033, a diversion component and a mixing component. The partition plate 1031 is fixedly connected to the liquid inlet guide frame 103, and the shutoff plate 1032 is fixedly connected to the top of the partition plate 1031. A mixing hole 1033 is opened on the partition plate 1031. The mixing hole 1033 is located at the connection between the shutoff plate 1032 and the partition plate 1031. The liquid blocked by the shutoff plate 1032 passes through the mixing hole 1033 and mixes with the liquid at the bottom of the partition plate 1031 to perform initial mixing.

[0033] After the liquid enters the liquid inlet guide frame 103, it will be divided into two parts, upper and lower parts, by the partition plate 1031. When the liquid on the top of the partition plate 1031 flows along the liquid inlet guide frame 103, a part of it will come into contact with the intercepting plate 1032 and stop flowing. This part of the liquid flows downward through the mixing hole 1033 and converges and mixes with the liquid below the partition plate 1031. A intercepting plate 1032 is provided at every interval on the top of the partition plate 1031, so that the liquid is separated in the liquid inlet guide frame 103 and then undergoes multiple collision and mixing.

[0034] like Figure 2 and Figure 3 As shown, the diversion assembly includes a vertical guide tube 201, a diversion plate 202 and a fixed inclined plate 203. The vertical guide tube 201 is fixedly connected to the bottom of the conical focusing frame 2, and the diversion plate 202 is fixedly connected inside the vertical guide tube 201. The liquid passing through the vertical guide tube 201 is diverted to the surroundings under the action of the diversion plate 202, and the fixed inclined plate 203 is fixedly connected inside the vertical guide tube 201.

[0035] The liquid passing through the liquid inlet guide frame 103 will flow into the conical focusing frame 2. After entering the conical focusing frame 2, the liquid will flow along the conical surface inside it and converge together. After the round, the liquid will flow downward into the vertical guide tube 201. The liquid entering the vertical guide tube 201 will collide with the fixed inclined plate 203 therein to divide the liquid entering the vertical guide tube 201 and mix it again. When the liquid flows out of the vertical guide tube 201, it will disperse to the surroundings along the diverter plate 202.

[0036] like Figure 3 and Figure 5 As shown, the mixing assembly includes a mixing frame 3 and a spiral guide vane 301. The mixing frame 3 is fixedly connected to the fixed inner cylinder 101. The mixing frame 3 is located at the bottom of the diverter plate 202. The bottom of the mixing frame 3 is connected to the conical liquid guide cylinder 302. The liquid dispersed after passing through the diverter plate 202 enters the mixing frame 3. The spiral guide vanes 301 are fixedly connected to the mixing frame 3. The spiral guide vanes 301 are staggered in the mixing frame 3. The liquid continuously collides, mixes or separates during the flow around the spiral guide vanes 301 and finally enters the conical liquid guide cylinder 302.

[0037] After the liquid dispersed along the diverter plate 202 enters the mixing frame 3, the liquid entering the mixing frame 3 will flow downward along the spiral guide vane 301. Since the multiple spiral guide vanes 301 are staggered, the liquid flowing downward from different spiral guide vanes 301 will continuously produce a phenomenon of division-position movement-re-merge, so that the liquid can be fully mixed evenly.

[0038] Example 3: Based on Example 2, Figure 6-Figure 9 As shown, it also includes a fixed screen drum 4, a water injection pipe 401, a hydraulic impeller 402, a rotating frame 403, an outer gear ring 404, a powder bin 405, a powder conduit 4051 and a feeding assembly. The fixed screen drum 4 is fixedly connected to the fixed partition 1021, and the water injection pipe 401 is fixedly connected to the fixed top cover 1001. High-pressure water flows through the water injection pipe 401 and is added to the feeding cone frame 102. The water injection pipe 401 is rotatably connected to the hydraulic impeller 402, and the water injection pipe 401 is rotatably connected to the rotating frame 403. The rotating frame 403 is connected to the hydraulic impeller 402. 02 is fixedly connected, and the high-pressure water flow drives the rotating frame 403 to rotate through the hydraulic impeller 402. The rotating frame 403 is fixedly connected with an outer gear ring 404, and the fixed top cover 1001 is fixedly connected with a powder conduit 4051. The top of the powder conduit 4051 is fixedly connected with a powder bin 405, and the powder bin 405 is communicated with the powder conduit 4051. The feeding assembly is installed in the fixed top cover 1001 and the feeding cone frame 102. When the rotating frame 403 rotates, it drives the feeding assembly to run, so as to send the powder in the powder bin 405 into the fixed screen drum 4 through the powder conduit 4051.

[0039] A fixed sieve drum 4 is provided on the top of the device to dissolve the powder in water to form a solution before static mixing. The solution formed subsequently is continuously divided and converged for mixing in the static mixing mechanism. When preparing the solution, a high-pressure water flow is added to the fixed sieve drum 4 through the water injection pipe 401. The high-pressure water flow drives the rotating frame 403 to rotate through the hydraulic impeller 402. When the rotating frame 403 rotates, it drives the feeding component to operate through the outer gear ring 404. During the operation of the feeding component, the powder in the powder bin 405 is added to the fixed sieve drum 4 through the powder conduit 4051, so that the powder and water are mixed together in the fixed sieve drum 4 to form a solution.

[0040] like Figure 6 、 Figure 8 and Figure 9As shown, the feeding assembly includes a transmission gear 5, a bevel gear transmission group 501, a feeding cam 502, a pump cylinder 503, a pressurizing piston 504, a pressurizing push rod 505, an air intake slide 506, a support spring 507, a feeding push rod 508, a rotating baffle 509, a rotating cam 5091, an air filling pipe 510, a fixing ring 511, a sliding plug 512 and a blocking spring 513. The feeding cone frame 102 is rotatably connected to the transmission gear 5, the transmission gear 5 is engaged with the outer gear ring 404, and the feeding cam 502 is rotatably connected to the closed outer cylinder 1. The wheel 502 is connected to the transmission gear 5 through the bevel gear transmission group 501, and the transmission gear 5 drives the feeding cam 502 to rotate through the bevel gear transmission group 501. The pump cylinder 503 is fixedly connected to the fixed top cover 1001, and the side wall of the powder guide tube 4051 is fixedly connected to the gas filling pipe 510. The other end of the gas filling pipe 510 is connected to the pump cylinder 503. The pump cylinder 503 is slidably connected with a pressurizing piston 504. The eccentric part of the feeding cam 502 is rotatably connected to the pressurizing push rod 505. The other end of the pressurizing push rod 505 is rotatably connected to the pressurizing piston 504. When 502 rotates, the pressurizing piston 504 is driven to slide up and down in the air pump cylinder 503 through the pressurizing push rod 505. The air pump cylinder 503 is slidably connected with an air intake slide 506, which passes through the fixed top cover 1001 and is slidably connected thereto. A support spring 507 is provided between the air intake slide 506 and the fixed top cover 1001. One end of the support spring 507 is fixed to the fixed top cover 1001, and the other end is fixed to the air intake slide 506. A rotating baffle 509 is rotatably connected in the powder bin 405, and a rotating cam is fixed to the rotating shaft of the rotating baffle 509. Wheel 5091, the eccentric part of the rotating cam 5091 is rotatably connected to the feeding push rod 508, the other end of the feeding push rod 508 is rotatably connected to the air inlet slide 506, a fixing ring 511 is fixed in the air filling pipe 510, a sliding plug 512 is slidably connected in the air filling pipe 510, a sealing spring 513 is provided between the sliding plug 512 and the air filling pipe 510, one end of the sealing spring 513 is fixed on the sliding plug 512, and the other end is fixed in the air filling pipe 510, the sealing spring 513 pushes the sliding plug 512 to fit with the fixing ring 511 to seal the air filling pipe 510.

[0041] When the hydraulic wheel 402 rotates, it drives the outer gear ring 404 to rotate through the rotating frame 403. When the outer gear ring 404 rotates, it drives the feeding cam 502 to rotate through the transmission gear 5 and the bevel gear transmission group 501. When the feeding cam 502 rotates, it drives the pressurizing piston 504 to slide up and down in the pump cylinder 503 through the pressurizing push rod 505. When the pressurizing piston 504 slides downward along the pump cylinder 503, the blocking spring 513 presses the sliding plug 512 onto the fixing ring 511. At this time, the pump cylinder 503 and the powder conduit 4 051 is blocked, and the air pressure in the pump cylinder 503 becomes smaller. The air inlet slide bar 506 slides downward under the influence of the external air pressure to open the top inlet of the pump cylinder 503. At this time, the external air can be sucked into the pump cylinder 503. When the air inlet slide bar 506 descends, the arc compression support spring 507 is compressed, and when the air inlet slide bar 506 descends, it can drive the rotating cam 5091 to rotate through the feeding push rod 508. When the rotating cam 5091 rotates, it drives the rotating baffle 509 to rotate to discharge the powder from the bottom of the powder bin 405. The opening is opened, so that the powder in the powder bin 405 falls downward into the powder conduit 4051. When the pressurizing piston 504 slides upward and resets along the pump cylinder 503, the air pressure in the pump cylinder 503 increases, and the support spring 507 pushes the air inlet slide bar 506 to slide upward and reset. The air inlet slide bar 506 pushes the rotating cam 5091 to rotate and reset through the feeding push rod 508. The rotating baffle 509 is driven to rotate and reset and block the bottom outlet of the powder bin 405. At this time, the gas in the pump cylinder 503 pushes the sliding plug 512 along The gas filling tube 510 slides and moves away from the fixed ring 511, the sealing spring 513 is compressed, and the passage between the pump cylinder 503 and the powder conduit 4051 is opened. At this time, the gas in the pump cylinder 503 is pushed into the powder conduit 4051 through the gas filling tube 510, and then ejected outward along the bottom outlet of the powder conduit 4051. The powder entering the powder conduit 4051 falls into the fixed sieve drum 4 from the bottom outlet of the powder conduit 4051 along with the air flow, and the powder entering the fixed sieve drum 4 is mixed with the water therein to form the required solution.

[0042] like Figure 7 As shown, it also includes a stirring and dispersing blade 406 and a movable scraper 407. The stirring and dispersing blade 406 is fixedly connected to the rotating frame 403. The stirring and dispersing blade 406 stirs the powder and dissolves it in water. The movable scraper 407 is fixedly connected to the outer gear ring 404. A soft brush is installed on the side of the movable scraper 407 close to the outer wall of the fixed screen cylinder 4. The movable scraper 407 is in contact with the outer wall of the fixed screen cylinder 4. When the outer gear ring 404 drives the movable scraper 407 to rotate, the material remaining in the sieve holes of the fixed screen cylinder 4 is scraped off.

[0043] like Figure 7As shown, it also includes a fixed block 4001, and the fixed block 4001 is fixedly connected to the top of the fixed screen drum 4. The movable scraper 407 can collide with the fixed block 4001 during the rotation of the outer gear ring 404. When the movable scraper 407 collides with the fixed block 4001, the fixed screen drum 4 can vibrate to shake off the powder in the through hole on the fixed screen drum 4.

[0044] When the rotating frame 403 rotates, it drives the stirring and breaking up blades 406 to rotate. When the stirring and breaking up blades 406 rotate, the powder entering the fixed screen drum 4 is broken up, and at the same time, the powder agglomerated in the fixed screen drum 4 when encountering water can be broken up, reducing the presence of powder agglomerates in the water. When the outer gear ring 404 rotates, the moving scraper rod 407 rotates accordingly. The moving scraper rod 407 scrapes the outer wall of the fixed screen drum 4 during the rotation process, and the brush on the moving scraper rod 407 can clean the sieve holes of the fixed screen drum 4 when it moves. In the process of the moving scraper rod 407 rotating with the outer gear ring 404, it can collide with the fixed block 4001 on the top of the fixed screen drum 4, so as to drive the fixed screen drum 4 body to vibrate, and cooperate with the brush on the moving scraper rod 407 to clean the through holes of the fixed screen drum 4 to prevent the powder from clogging the sieve holes of the fixed screen drum 4.

[0045] like Figure 6 and Figure 10 As shown, it also includes a belt transmission part 6, an inflation cam 601, an inflation cylinder 602, an inflation piston 6021, an inflation push rod 603, a three-way pipe 604, an air inlet pipe 6041 and an air outlet pipe 6042. The inflation cam 601 is rotatably connected in the closed outer cylinder 1. The feeding cam 502 and the inflation cam 601 are connected through the belt transmission part 6. The feeding cam 502 drives the inflation cam 601 to rotate through the belt transmission part 6. The inflation cylinder 602 is fixed between the closed outer cylinder 1 and the fixed inner cylinder 101. The inflation piston 6021 is slidably connected in the inflation cylinder 602. The inflation cam 601 is rotatably connected to the inflation push rod 603 at the eccentric position. The other end of the inflation push rod 603 is rotatably connected to the inflation piston 6021. When the inflation cam 601 rotates The inflation piston 6021 is driven up and down by the inflation push rod 603, and a three-way air pipe 604 is fixedly connected to the top of the inflation cylinder 602. The top outlet of the inflation cylinder 602 is connected to the three-way air pipe 604, one end of the three-way air pipe 604 is connected to the external air through the air inlet pipe 6041, and the other end of the three-way air pipe 604 is connected to the liquid inlet guide frame 103 through the air outlet pipe 6042. When the inflation piston 6021 slides up and down in the inflation cylinder 602, the external air enters the inflation cylinder 602 through the air inlet pipe 6041 and the three-way air pipe 604, and then the air in the inflation cylinder 602 is added to the liquid inlet guide frame 103 through the three-way air pipe 604 and the air outlet pipe 6042. One-way air valves are installed in both the air inlet pipe 6041 and the air outlet pipe 6042.

[0046] When the feeding cam 502 rotates, the inflation cam 601 is driven to rotate through the belt transmission part 6. When the inflation cam 601 rotates, the inflation piston 6021 is driven to slide up and down along the inflation cylinder 602 through the inflation push rod 603. When the inflation piston 6021 slides upward along the inflation cylinder 602, the gas in the inflation cylinder 602 is pushed and enters the liquid inlet guide frame 103 through the three-way air pipe 604 and the air outlet pipe 6042 to increase the flow rate of the liquid in the liquid inlet guide frame 103 at this time. When the inflation piston 6021 slides downward along the inflation cylinder 602, the external gas passes through the air inlet pipe 6041 and the three-way air pipe 6042. The vent pipe 604 is drawn into the inflation cylinder 602, and under the influence of the one-way air valve, the gas will not enter the liquid inlet guide frame 103 through the outlet pipe 6042. The liquid flow rate in the liquid inlet guide frame 103 is restored, and air is added to the liquid inlet guide frame 103 at regular intervals through the inflation cylinder 602 to regularly change the flow rate of the liquid in the liquid inlet guide frame 103, thereby improving the liquid mixing efficiency in the liquid inlet guide frame 103. The intermittent increase in the liquid flow rate can drive the flow of materials remaining in the partition plate 1031 and the mixing hole 1033 to prevent the mixing hole 1033 on the partition plate 1031 from being blocked.

[0047] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A skid-mounted equipment for preparing oilfield polymer solutions, characterized by: The invention comprises a closed outer cylinder (1), a fixed top cover (1001), a liquid outlet pipe (1002), a fixed inner cylinder (101), a feed cone frame (102), a fixed partition (1021), a liquid feed guide frame (103), a conical flow collecting frame (2), a conical liquid guide cylinder (302) and a static mixing mechanism, wherein the top of the closed outer cylinder (1) is fixedly connected to the fixed top cover (1001), the top of the closed outer cylinder (1) is fixedly connected to the feed cone frame (102), the bottom of the feed cone frame (102) is fixedly connected to the fixed partition (1021), and the inside of the closed outer cylinder (1) is connected to the feed cone frame (102). ) is fixedly connected to a fixed inner cylinder (101), a liquid outlet pipe (1002) is fixedly connected to the bottom of the closed outer cylinder (1), a liquid inlet guide frame (103) is fixedly connected to the bottom of the fixed partition (1021), a conical flow collecting frame (2) is fixedly connected to the fixed inner cylinder (101), a conical liquid guide cylinder (302) is fixedly connected to the bottom of the fixed inner cylinder (101), the conical liquid guide cylinder (302) is communicated with the liquid outlet pipe (1002), and the mixed liquid flows outward through the conical liquid guide cylinder (302). The static mixing mechanism is installed in the fixed inner cylinder (101), and the liquid is evenly mixed after passing through the static mixing mechanism.

2. The skid-mounted equipment for preparing an oilfield polymer solution according to claim 1, characterized in that: The static mixing mechanism comprises a partition plate (1031), a shutoff plate (1032), a mixing through hole (1033), a diversion assembly and a mixing assembly. The partition plate (1031) is fixedly connected inside the liquid inlet guide frame (103), the shutoff plate (1032) is fixedly connected to the top of the partition plate (1031), and a mixing through hole (1033) is provided on the partition plate (1031). The mixing through hole (1033) is located at the connection between the shutoff plate (1032) and the partition plate (1031).

3. The skid-mounted equipment for preparing an oilfield polymer solution according to claim 2, characterized in that: The flow diversion assembly comprises a vertical flow guide tube (201), a flow diversion plate (202) and a fixed inclined plate (203); the vertical flow guide tube (201) is fixedly connected to the bottom of the conical flow focusing frame (2); the flow diversion plate (202) is fixedly connected inside the vertical flow guide tube (201); and the fixed inclined plate (203) is fixedly connected inside the vertical flow guide tube (201).

4. The skid-mounted equipment for preparing an oilfield polymer solution according to claim 2, characterized in that: The mixing assembly comprises a mixing frame (3) and spiral guide vanes (301); the mixing frame (3) is fixedly connected to the fixed inner cylinder (101); the spiral guide vanes (301) are fixedly connected to the mixing frame (3); and the spiral guide vanes (301) are staggeredly arranged in the mixing frame (3).

5. The skid-mounted equipment for preparing oilfield polymer solution according to claim 1, characterized in that: The invention also includes a fixed screen drum (4), a water injection pipe (401), a hydraulic wheel (402), a rotating frame (403), an outer gear ring (404), a powder bin (405), a powder conduit (4051) and a feeding assembly. The fixed screen drum (4) is fixedly connected to the fixed partition (1021), the water injection pipe (401) is fixedly connected to the fixed top cover (1001), the water injection pipe (401) is rotatably connected to the hydraulic wheel (402), the water injection pipe (401) is rotatably connected to the rotating frame (403), and the rotating frame ( 403) is fixedly connected to the hydraulic impeller (402), an outer gear ring (404) is fixedly connected to the rotating frame (403), a powder conduit (4051) is fixedly connected to the fixed top cover (1001), a powder bin (405) is fixedly connected to the top of the powder conduit (4051), a feeding assembly is installed in the fixed top cover (1001) and the feeding cone frame (102), and when the rotating frame (403) rotates, the feeding assembly is driven to operate, so that the powder in the powder bin (405) is sent into the fixed screen drum (4) through the powder conduit (4051).

6. The skid-mounted equipment for preparing oilfield polymer solution according to claim 5, characterized in that: The feeding assembly includes a transmission gear (5), a bevel gear transmission group (501), a feeding cam (502), a pump cylinder (503), a pressurizing piston (504), a pressurizing push rod (505), an air intake slide rod (506), a support spring (507), a feeding push rod (508), a rotating baffle (509), a rotating cam (5091), an air feeding pipe (510), a fixing ring (511), a sliding plug (512) and a blocking spring (513), and is rotatably connected to the feeding cone frame (102). A transmission gear (5) is provided, the transmission gear (5) is meshed with the outer gear ring (404), a feeding cam (502) is rotatably connected in the closed outer cylinder (1), the feeding cam (502) and the transmission gear (5) are connected via a bevel gear transmission group (501), a pump cylinder (503) is fixedly connected to the fixed top cover (1001), a gas filling pipe (510) is fixedly connected to the side wall of the powder conduit (4051), the other end of the gas filling pipe (510) is communicated with the pump cylinder (503), and the pump cylinder (503) is slidably connected to the inner wall of the pump cylinder (503). A pressurizing piston (504) is connected, and a pressurizing push rod (505) is rotatably connected to the eccentric portion of the feeding cam (502). The other end of the pressurizing push rod (505) is rotatably connected to the pressurizing piston (504). An air intake slide rod (506) is slidably connected in the pump cylinder (503). The air intake slide rod (506) passes through the fixed top cover (1001) and is slidably connected thereto. A support spring (507) is provided between the air intake slide rod (506) and the fixed top cover (1001). The powder bin (405) is rotatably connected to the pump cylinder (503). A rotating baffle (509) is provided, a rotating cam (5091) is fixedly connected to the rotating shaft of the rotating baffle (509), a feeding push rod (508) is rotatably connected to the eccentric portion of the rotating cam (5091), the other end of the feeding push rod (508) is rotatably connected to the air inlet slide rod (506), a fixing ring (511) is fixedly connected in the air filling pipe (510), a sliding plug (512) is slidably connected in the air filling pipe (510), and a blocking spring (513) is provided between the sliding plug (512) and the air filling pipe (510).

7. The skid-mounted equipment for preparing oilfield polymer solution according to claim 5, characterized in that: The invention also includes a stirring and dispersing blade (406) and a movable scraper (407). The stirring and dispersing blade (406) is fixedly connected to the rotating frame (403), and the movable scraper (407) is fixedly connected to the outer gear ring (404). A soft brush is installed on one side of the movable scraper (407) close to the outer wall of the fixed screen drum (4).

8. The skid-mounted equipment for preparing oilfield polymer solution according to claim 7, characterized in that: It also includes a fixed block (4001), the top of the fixed screen drum (4) is fixedly connected to the fixed block (4001), and the movable scraper rod (407) can collide with the fixed block (4001) during the process of rotating with the outer gear ring (404).

9. The skid-mounted equipment for preparing oilfield polymer solution according to claim 6, characterized in that: The invention also includes a belt transmission member (6), an inflation cam (601), an inflation cylinder (602), an inflation piston (6021), an inflation push rod (603), a three-way air pipe (604), an air inlet pipe (6041) and an air outlet pipe (6042). The inflation cam (601) is rotatably connected to the closed outer cylinder (1). The feeding cam (502) and the inflation cam (601) are connected via a belt transmission member (6). The inflation cylinder (602) is fixedly connected between the closed outer cylinder (1) and the fixed inner cylinder (101). An inflation piston (6021) is slidably connected inside (602), an inflation push rod (603) is rotatably connected to the eccentric portion of the inflation cam (601), the other end of the inflation push rod (603) is rotatably connected to the inflation piston (6021), a three-way air pipe (604) is fixedly connected to the top of the inflation cylinder (602), the top outlet of the inflation cylinder (602) is connected to the three-way air pipe (604), one end of the three-way air pipe (604) is fixedly connected to the air inlet pipe (6041), and the other end of the three-way air pipe (604) is fixedly connected to the air outlet pipe (6042).

10. A method for using a skid-mounted device for preparing an oilfield polymer solution, characterized in that: The skid-mounted equipment for preparing an oilfield polymer solution according to claims 1 to 9 comprises the following steps: In the first step, liquid is added into the feed cone frame (102), so that the multiple liquids are pre-mixed on the top of the fixed partition (1021), and the mixed liquid flows into the liquid inlet guide frame (103) through the through hole on the fixed partition (1021), and then flows into the conical flow-collecting frame (2) along the liquid inlet guide frame (103); In the second step, the liquid flowing into the conical flow-collecting frame (2) flows downward in the static mixing mechanism, and the liquid is evenly mixed after multiple separation, displacement and overlap, and finally the mixed solution flows downward through the conical liquid guide tube (302).

Images