Online curing device

Abstract

The invention belongs to the technical field of oil and gas field development and research, and discloses an online curing device. Comprising a dry powder feeder, a configured water controller, a water-powder mixer, a jet type water-powder mixer, a first forced stretching instant dissolving device and a tubular curing device, the configured water controller is used for conveying a part of water with a preset amount to the water-powder mixer, and the other part of the water is conveyed to the jet type water-powder mixer; water entering the water-powder mixer is used for forming eddy current to be mixed with dry powder materials from the dry powder feeder, and then enters the jet-type water-powder mixer together with the dry powder materials; water conveyed to the jet-type water-powder mixer and mixed liquid from the water-powder mixer are mixed in the jet-type water-powder mixer and then sequentially enter the first forced stretching instant dissolving device and the tubular curing device. The online curing device disclosed by the invention can be used for quickly dispersing, dissolving and curing the dry powder polymer.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas field development research, and in particular to an online maturation device. Background Art

[0002] my country has carried out onshore oil field polymer flooding research and field mine experiments since the 1970s and 1980s. It has a complete theoretical system and rich practical results. It is one of the most widely used technologies for improving oil recovery, which has accumulated rich experience for the use of offshore polymers. Specifically, the main problems currently faced are as follows:

[0003] (1) The offshore platform has a small space. Since the offshore oilfield production process measures are basically implemented on the offshore platform, the offshore oilfield platform has a small space, limited load-bearing capacity, harsh operating environment, inconvenient transportation, and limited lifting capacity. Therefore, it is difficult for the offshore platform to apply the injection process technology and equipment commonly used in land oilfields. Therefore, under the premise of meeting the injection process conditions, the polymer preparation and injection device needs to be more efficient, compact and flexible. Objectively, this requires the polymer to have a faster dissolution rate.

[0004] (2) The offshore platform environment is humid. The average relative humidity at sea is about 90%. During storage and preparation, the polymer will be exposed to humid air, causing the polymer to absorb moisture and harden, making it more difficult to dissolve and deteriorating its fluidity.

[0005] (3) The distance between wells in offshore oil fields is large. The average distance between wells in offshore oil fields is more than 200 meters, and even up to 300-400 meters. The polymer needs to be transported over long distances for a long time to achieve oil recovery. Therefore, the polymer needs to have good viscosity enhancement and long-term thermal stability.

[0006] (4) There is a lack of fresh water on offshore platforms. Offshore oilfield polymers are prepared with clean water and diluted with produced water. Since seawater was previously injected into the oil reservoir, the produced water has a high mineralization degree. Using produced wastewater for injection requires the polymer to have temperature and salt resistance.

[0007] On-site polymer preparation tests in onshore oil fields have shown that the solubility of polymers is inversely proportional to the maturation time required during the dissolution process. The worse the solubility of the polymer, the longer the time required for dissolution and maturation, and more dissolution and maturation equipment is needed when preparing the polymer solution. The narrow space structure of the offshore platform and the urgent need to increase production and speed up production cannot reserve enough maturation space and time for the polymer, which means that it is doomed to be impossible to copy the polymer injection model in onshore oil fields. In addition, the mineralization and temperature of the offshore oil field reservoirs are relatively high, and the production increase effect of conventional polymers in high temperature and high salt environments is greatly affected. Therefore, it is urgent to develop a new type of polymer online maturation device to better adapt to the application of polymer gels on offshore platforms. Summary of the invention

[0008] In order to realize the rapid dispersion, dissolution and maturation of dry powder polymer, the present invention proposes an online maturation device.

[0009] The online aging device according to the present invention comprises: a dry powder feeder, a water controller, a gouache mixer, a jet gouache mixer, a first forced stretching quick-dissolving device and a tubular aging device, wherein the water controller is used to deliver a part of a predetermined amount of water to the gouache mixer and another part to the jet gouache mixer, the water entering the gouache mixer is used to form a vortex to mix with the dry powder material from the dry powder feeder and then enter the jet gouache mixer together, the water delivered to the jet gouache mixer and the mixed liquid from the gouache mixer are mixed in the jet gouache mixer and then enter the first forced stretching quick-dissolving device and the tubular aging device in sequence.

[0010] Furthermore, the water controller is configured to include a centrifugal pump connected to the liquid inlet of the water-powder mixer through a first pipeline, the centrifugal pump is connected to the water inlet of the online aging device through a second pipeline, a filter is arranged on the second pipeline, a pressure sensor assembly and an electromagnetic flowmeter assembly are arranged on the first pipeline, and a first remote control integration is connected to the electromagnetic flowmeter assembly, the pressure sensor assembly and the centrifugal pump at the same time, and the jet water-powder mixer is connected between the first pipeline and the first forced stretching instant dissolution device.

[0011] Furthermore, a sprinkler for causing water entering the water-powder mixer to form a vortex is provided at the top of the water-powder mixer, a dry powder feed port is provided at the top of the water-powder mixer, and a dry powder feeder is connected to the dry powder feed port.

[0012] Furthermore, the dry powder feeder includes a dry powder silo and a screw feeder located between the dry powder silo and the dry powder feed port, and a silo wall vibrator is installed on the outer side wall of the silo.

[0013] Furthermore, a static mixer may be selectively connected between the jet-type gouache mixer and the first forced stretching instant dissolving device.

[0014] Furthermore, a second forced stretching quick dissolving device may be selectively connected between the first forced stretching quick dissolving device and the tubular aging device.

[0015] Furthermore, the first forced stretching instant dissolving device has the same structure as the second forced stretching instant dissolving device, and the first forced stretching instant dissolving device includes a shell; a dissolving unit located in the shell, the dissolving unit divides the shell into a liquid inlet chamber and a liquid outlet chamber, and the shell is formed with a liquid inlet connected to the liquid inlet chamber and a liquid outlet connected to the liquid outlet chamber; and a driving unit connected to the dissolving unit, wherein the dissolving unit includes a driving shaft connected to the driving shaft of the driving unit and a gear disk assembly connected to the driving shaft, the gear disk assembly includes a moving gear disk connected to the driving shaft and a fixed gear disk whose outer periphery is fixedly connected to the inner wall of the shell, the outer side of the fixed gear disk is the liquid inlet chamber, and the outer side of the moving gear disk is the moving shaft. The outer side of the toothed disc is a liquid outlet cavity. The movable toothed disc includes a liquid suction disc and a plurality of toothed discs which are coaxially connected in the direction toward the liquid outlet cavity and whose outer diameter size groups gradually increase. A matching gap is formed between the inner periphery of the fixed toothed disc and the outer periphery of the movable toothed disc, and between the disc surface of the fixed toothed disc and the disc surface of the movable toothed disc. Spacings are formed at even intervals on the outer periphery of each toothed disc. The driving shaft drives the movable toothed disc to rotate relative to the fixed toothed disc under the drive of the driving shaft of the driving unit. The liquid suction disc is used to suck the liquid into the liquid inlet cavity from the liquid inlet and guide it to the spacing and matching gap. The liquid enters the liquid outlet cavity after being sheared, squeezed and stretched in the spacing and gap and is discharged from the liquid outlet.

[0016] Further, among adjacent toothed discs, the spacing between toothed discs with smaller outer diameters is greater than the spacing between toothed discs with larger outer diameters.

[0017] Furthermore, two toothed disc assemblies are arranged in the shell, and a transfer chamber is formed between the two toothed disc assemblies. The outer sides of the two toothed disc assemblies are respectively a liquid inlet chamber and a liquid outlet chamber. A speed change unit is arranged in the transfer chamber. The toothed disc assembly close to the liquid outlet chamber is connected to the driving shaft. The speed change unit includes a driven shaft connected to the toothed disc assembly close to the liquid inlet chamber, a driven gear plate connected to the driven shaft, a slave transmission wheel is arranged on the driven gear plate, a driving gear plate connected to the free end of the driving shaft, a main transmission wheel is arranged on the driving gear plate, and a transmission shaft connected to the inner wall of the shell, and the main transmission wheel and the slave transmission wheel are both connected to the transmission shaft.

[0018] Furthermore, the area of ​​the driving shaft located in the liquid outlet cavity is also connected to a stirring blade.

[0019] Compared with the prior art, the online aging device of the present invention has the following advantages:

[0020] 1) It can improve the concentration accuracy and liquid feeding speed of the mother solution and shorten the dissolution and aging time of the polymer. The whole process does not require stirring, and it is aging through tubular aging. There is no need for aging tanks, and there is no risk of liquid overflowing from the tank. At the same time, it also saves equipment space;

[0021] 2) It can realize the online continuous preparation of solid dry powder without switching the aging tank back and forth, thus ensuring the continuity and stability of injection;

[0022] 3) The dry powder feeder, water controller, water-powder mixer, jet-type water-powder mixer, first forced stretching instant dissolution device and tubular aging device are used in combination to effectively achieve rapid dispersion, dissolution and aging of the polymer dry powder, and can achieve the preparation of high-concentration polymer solution with high viscosity retention rate;

[0023] 4) The key operating parameters of the entire device can be monitored and adjusted in real time, and abnormal situations can be manually intervened and operated. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an online ripening device according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 The structural schematic diagram of the first forced stretching instant dissolving device shown;

[0026] Figure 3 for Figure 2 The schematic structural diagram of the toothed disc assembly shown in the figure shows the entire structure of the movable toothed disc and a partial structure of the fixed toothed disc;

[0027] Figure 4 for Figure 2 A schematic side view of the structure of the toothed disc assembly shown;

[0028] Figure 5 is a schematic diagram of the structure of the speed change unit;

[0029] Figure 6 for Figure 5 The structural schematic diagram of the driven gear plate and the driving gear plate shown;

[0030] Figure 7 for Figure 5 The structural schematic diagram of the main transmission wheel and the slave transmission wheel shown;

[0031] Figure 8 This is a diagram showing the gelling effect of a system prepared by using the online aging device of an embodiment of the present invention to efficiently and quickly dissolve a dry powder polymer. DETAILED DESCRIPTION

[0032] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0033] Figure 1 FIG. 2 shows the structure of an online ripening device 200 according to an embodiment of the present invention. Figure 1As shown, the online aging device 200 may include: a dry powder feeder 26, a configuration water controller (described in detail below), a gouache mixer 202, a jet gouache mixer 203, a first forced stretching instant dissolving device 100, and a tubular aging device 209. The configuration water controller is used to deliver a part of a predetermined amount of water to the gouache mixer 202, and another part to the jet gouache mixer 203. The water entering the gouache mixer 202 is used to form a vortex to mix with the dry powder material from the dry powder feeder 26 and then enter the jet gouache mixer 203 together. The water delivered to the jet gouache mixer 203 and the mixed liquid from the gouache mixer 202 are mixed in the jet gouache mixer 203 and then enter the first forced stretching instant dissolving device 100 and the tubular aging device 209 in sequence.

[0034] In the online aging device 200 of the embodiment of the present invention, a water controller is configured to ensure the water supply accuracy. It supplies part of the water to the water-powder mixer 202 so that the polymer dry powder is mixed with the part of the water, which can ensure that the polymer dry powder is mixed evenly with the clean water, the concentration of the prepared liquid is stable (the concentration error does not exceed 2%), and no defects such as "fish eyes" are generated. The other part is supplied to the jet-type water-powder mixer 203 as the power for the jet-type water-powder mixer 203 to draw the mixed liquid in the water-powder mixer 202 into it for dynamic and uniform mixing and to make the prepared liquid reach the required concentration. The solution can effectively avoid the problem of polymer agglomeration and excessive "fish eyes"; the first forced stretching quick-dissolving device 207 is used to effectively disperse, grind and mix the polymer swollen particles, thereby increasing the contact area between water and the swollen particles, accelerating the diffusion rate of water molecules into the swollen particles, shortening the swelling and dissolution time, and accelerating the dissolution of the polymer; the tubular aging device 209 is used to make the polymer solution circulate in its pipeline, and under the action of the shear force on the inner wall of the pipeline, the diffusion of polymer molecules is accelerated, thereby achieving the purpose of rapid aging.

[0035] The online aging device 100 of the embodiment of the present invention can improve the accuracy of the mother solution concentration and the liquid feeding speed and shorten the dissolution and aging time of the polymer, thereby eliminating the existing aging tank and reducing the equipment footprint. At the same time, the dry powder feeder 26, the configuration water controller, the water-powder mixer 202, the jet-type water-powder mixer 203, the first forced stretching instant dissolution device 100 and the tubular aging device 209 are combined to effectively achieve the rapid dispersion, dissolution and aging of the polymer dry powder.

[0036] According to the present invention, in Figure 1In the preferred embodiment shown, the water controller may include a centrifugal pump 201 connected to the liquid inlet of the gouache mixer 202 through a first pipeline 301, the centrifugal pump 201 is connected to the water inlet 210 of the online aging device 200 through a second pipeline 302, a filter 214 is arranged on the second pipeline 302, a pressure sensor component 217 and an electromagnetic flowmeter component 218 are arranged on the first pipeline 301, and a first remote control integration 216 is connected to the electromagnetic flowmeter component 218, the pressure sensor component 217 and the centrifugal pump 201 at the same time, and the jet gouache mixer 203 is connected between the first pipeline 301 and the first forced stretching instant dissolution device 100.

[0037] In this embodiment, a water controller is configured to deliver clean water to the water-powder mixer 202 to prepare a polymer solution of a certain concentration. The high-pressure sewage is filtered in the filter 214 under the control of the electric ball valve 213, and then flows through the manual valve 215, the centrifugal pump 201, the pressure sensor assembly 217 and the electromagnetic flowmeter assembly 218 in sequence, and finally enters the water-powder mixer 202. Among them, the centrifugal pump 201 boosts the pressure of the incoming water with insufficient pressure; the pressure sensor assembly 217 may include a pressure gauge 21 and a first remote transmission module 22. After the pressure gauge 21 detects the pressure, it is uploaded to the first remote transmission control integration 216 through the first remote transmission module 22, thereby monitoring the pipeline pressure; the electromagnetic flowmeter assembly 218 may include an electromagnetic flowmeter 23, a flowmeter 24 and a second remote transmission module 25. The electromagnetic flowmeter 23 detects the flow signal, and the flowmeter 24 uploads the measured flow to the first remote transmission control integration 216 through the second remote transmission module 25, thereby controlling the opening degree of the electric ball valve 27 to achieve quantitative water delivery. The metering accuracy can be preferably 0.5% to ensure the liquid concentration.

[0038] Furthermore, if Figure 1 As shown, a sprinkler 212 for forming a vortex of water entering the water-powder mixer 202 may be provided at the top thereof, a dry powder feed port 28 is provided at the top of the water-powder mixer 202, and a dry powder feeder 26 is connected to the dry powder feed port 28. The nozzle of the sprinkler 212 can spray water at a high speed. In order to prevent the liquid sprayed from the nozzle from forming a water mist, a high-pressure nozzle may be provided at the top of the sprinkler 212. The polymer dry powder is fed into the vortex formed by the sprinkler 212 through the dry powder feed port 28, and the fast-flowing jet fluid is sprayed into the dry powder at a high speed for preliminary mixing, so that an anti-vortex pair is formed in the water-powder mixer 202 for vortex entrainment.

[0039] Preferably, the water level can be detected by a mixer probe arranged in the water-powder mixer 202, and the water level signal can be fed back to the discharge pump 29. If the water level exceeds the predicted value, the discharge pump 29 is turned on to accelerate the flow of the water-powder mixture in the water-powder mixer 202 so that it can quickly enter the jet water-powder mixer 203 for further mixing.

[0040] In such Figure 1 In the preferred embodiment shown, the dry powder feeder 26 may include a dry powder silo 204 and a screw feeder 205 located between the dry powder silo 204 and the dry powder feed port 28, and a silo wall vibrator (not shown in the figure) is installed on the outer wall of the dry powder silo 204. In this embodiment, since the problem of adhesion "bridging" often occurs when the polymer dry powder is fed, it will affect the predetermined feeding speed at the least, and will directly cause the feeding to stop in serious cases, causing an operation accident. For this reason, a silo wall vibrator is installed on the outside of the silo, and its function is to generate vibration during the feeding process, so that the silo locally generates elastic vibration, and further penetrates the vibration into the dry powder to a certain depth, eliminating the friction between the dry powder and the silo wall and the relative stability between the dry powder in the silo, so that the dry powder can be discharged smoothly from the silo port, ensuring smooth flow of materials. The screw feeder 205 can ensure accurate and uniform powder feeding, ensure metering accuracy, and can accurately adjust the powder feeding amount over a wide range. Under the action of the silo wall vibrator, the dry powder evenly falls into the metering screw of the screw feeder 205 and evenly fills each slat of the metering screw with a uniform volume density, ensuring that the dry powder feeder 26 has a high metering accuracy.

[0041] According to the present invention, in Figure 1 In the preferred embodiment shown, a static mixer 206 can be optionally connected between the jet-type gouache mixer 203 and the first forced stretching instant dissolving device 100. In this embodiment, the mixed liquid in the gouache mixer 202 is fed into the jet-type gouache mixer 203, and the incoming water is ejected at high speed by the ejector of the jet-type gouache mixer 203, forming a vortex area at the suction port of its nozzle body, and its pressure is lower than the atmospheric pressure, forming a local vacuum, generating negative pressure, carrying the mixed liquid mixed by the gouache mixer 202 for secondary mixing, and finally feeding it into the static mixer 206 to complete the gouache mixing process of the polymer. The purpose of the static mixer 206 is to disperse and simply stretch the micelles through the action of the fixed unit inside it on the fluid, accelerate the dissolution of the micelles in the mother liquid, and further accelerate the swelling and dissolution of the polymer dry powder.

[0042] Furthermore, if Figure 1As shown, a second forced stretching quick dissolving device 208 may be selectively connected between the first forced stretching quick dissolving device 100 and the tubular aging device 209. The second forced stretching quick dissolving device 208 is used to further force stretch and quick dissolve the polymer. When processing a low-displacement, low-concentration polymer mixed solution, only the first forced stretching quick dissolving device 100 may be selected; when processing a high-displacement, high-concentration polymer mixed solution, the first forced stretching quick dissolving device 100 and the second forced stretching quick dissolving device 208 may be combined.

[0043] Preferably, if Figure 1 As shown, the first forced stretching instant dissolving device 100 can be controlled by the second remote control integration 217, and the second forced stretching instant dissolving device 208 can be controlled by the third remote control integration 218. The first remote control integration 216, the second remote control integration 217 and the third remote control integration 218 are all connected to the PLC system.

[0044] According to the present invention, the structures of the first forced stretching quick dissolving device 100 and the second forced stretching quick dissolving device 208 can be completely the same. Figure 2 In the preferred embodiment shown, the first forced stretching instant dissolving device 100 may include: a housing 101; a dissolving unit 30 located in the housing 101, the dissolving unit 30 divides the housing 101 into a liquid inlet chamber 2 and a liquid outlet chamber 14, the housing 101 is formed with a liquid inlet 1 connected to the liquid inlet chamber 2 and a liquid outlet 9 connected to the liquid outlet chamber 14, and a driving unit 11 connected to the dissolving unit 30. The dissolving unit 30 may include a driving shaft 12 connected to the driving shaft of the driving unit 11 and a toothed disc assembly 31 connected to the driving shaft 12, the toothed disc assembly 31 may include a movable toothed disc 4 connected to the driving shaft 12 and a fixed toothed disc 3 whose outer periphery is fixedly connected to the inner wall of the housing 101, the outer side of the fixed toothed disc 3 is the liquid inlet chamber 2, the outer side of the movable toothed disc 4 is the liquid outlet chamber 14, and the combination Figure 3 and Figure 4 As shown, the movable gear plate 4 may include a liquid suction plate 41 and a plurality of gear plates (such as Figure 3 The first toothed disc 42 and the second toothed disc 43 shown in the figure, a matching gap 401 is formed between the inner periphery of the fixed toothed disc 3 and the outer periphery of the movable toothed disc 4, and between the disc surface of the fixed toothed disc 3 and the disc surface of the movable toothed disc 4, and spacings 402 are formed evenly on the outer periphery of each toothed disc. Among them, the driving shaft 12 drives the movable toothed disc 4 to rotate relative to the fixed toothed disc 3 under the drive of the driving shaft of the driving unit 11, and the liquid suction disc 41 is used to suck the liquid from the liquid inlet 1 into the liquid inlet cavity 2 and guide it to the spacing 402 and the matching gap 401. After the liquid is sheared, squeezed and stretched in the spacing 402 and the matching gap 401, it enters the liquid outlet cavity 14 and is discharged from the liquid outlet 9.

[0045] In this embodiment, the first forced stretching quick-dissolving device 100 generates a strong relative movement between the movable gear disc 4 and the fixed gear disc 3 by driving the movable gear disc 4 to rotate at a high speed relative to the fixed gear disc 3, thereby generating a strong shear force, friction force and high-speed impact force. When the swollen polymer particles flow through the matching gap 401 and the spacing 402 between the movable gear disc 4 and the fixed gear disc 3, the polymer swollen particles are effectively dispersed, ground and mixed under the action of shearing, extrusion and stretching, thereby increasing the contact area between water and the swollen particles, accelerating the diffusion rate of water molecules into the swollen particles, shortening the swelling and dissolution time, and accelerating the dissolution of the polymer.

[0046] In the first forced stretching instant dissolving device 100 of this embodiment, the movable toothed disc 4 is configured to include a liquid suction disc 41 and a plurality of toothed discs which are coaxially connected in the direction toward the liquid outlet chamber 14 and whose outer diameter size groups gradually increase, so that the movable toothed disc 4 is formed into a stepped toothed disc, and there is a matching gap 401 between the top surface and the side surface of each toothed disc of the stepped toothed disc and the fixed toothed disc 3, and the matching gap 401 between the top surface of each toothed disc and the fixed toothed disc 3 mainly provides the effect of extrusion and stretching, while the matching gap 401 between the side surface of each toothed disc and the fixed toothed disc 3 mainly provides the effect of shearing and stretching; at the same time, by forming a spacing 402 at equal intervals on the outer periphery of each toothed disc, the spacing 402 further provides the effect of shearing, extrusion and stretching, thereby further enhancing the forced stretching effect. By specifically setting the size of the matching gap 401 and the spacing 402, the effect of forced stretching can be controlled.

[0047] According to the present invention, in Figure 3 In the preferred embodiment shown, a plurality of guide arms 411 are formed on the surface of the liquid suction plate 41 facing the liquid inlet chamber 2, which are arranged divergently from the center of the surface to the periphery of the surface. The guide arms 411 mainly play the role of rough mixing and suction of liquid.

[0048] In a preferred embodiment, in order to enable the flow guide arm 411 to guide the liquid to the gap 402 and the matching gap 401 more quickly and fully, the flow guide arm 411 can be extended to the starting end of the gap 402 on the adjacent toothed disc; the end of the gap 402 on the toothed disc with a smaller outer diameter on the adjacent toothed disc is connected to the starting end of the gap 402 on the toothed disc with a larger outer diameter. Figure 2 For example, the movable gear plate 4 includes a liquid suction plate 41, a first gear plate 42 and a second gear plate 43 which are coaxially connected in the direction toward the liquid outlet chamber 14 and have gradually increasing outer diameter size groups. The guide arm 411 extends to the starting end of the spacing 402 on the first gear plate 42 adjacent to it; the end of the spacing 402 on the first gear plate 42 is connected to the starting end of the spacing 402 on the second gear plate 43.

[0049] According to the present invention, in order to further improve the forced stretching effect, it can be arranged in adjacent toothed discs that the spacing on the toothed disc with a smaller outer diameter is larger than the spacing on the toothed disc with a larger outer diameter. Figure 3 For example, the spacing 402 on the first toothed disc 42 is greater than the spacing 402 on the second toothed disc 43 , and the polymer swollen particles can be ground more finely when passing through the second toothed disc 43 than when passing through the first toothed disc 42 .

[0050] Preferably, the spacing on the toothed disc with a larger outer diameter is 1 / 3 of the spacing on the toothed disc with a smaller outer diameter. Figure 3 For example, the spacing 402 on the second toothed disc 43 is 1 / 3 of the spacing 402 on the first toothed disc 42. Further preferably, the toothed disc with the smallest outer diameter (i.e. Figure 3 The spacing 402 on the first toothed disc 42 shown is in the range of 2-4 mm, more preferably 3 mm.

[0051] Also preferably, the fitting gap 401 is in the range of 1-2 mm, more preferably 1.5 mm.

[0052] According to the present invention, in Figure 2 In the preferred embodiment shown, two toothed disc assemblies 31 are arranged in the housing 101, a transfer chamber 8 is formed between the two toothed disc assemblies 31, the outer sides of the two toothed disc assemblies 31 are respectively the liquid inlet chamber 2 and the liquid outlet chamber 14, a speed change unit is arranged in the transfer chamber 8, and the toothed disc assembly 31 close to the liquid outlet chamber 14 is connected to the driving shaft 12, combined with Figure 5 As shown, the speed change unit may include a driven shaft 5 connected to a toothed disc assembly 31 near the liquid inlet chamber 2, a driven gear plate 6 connected to the driven shaft 5, a slave transmission wheel 17 being arranged on the driven gear plate 6, a driving gear plate 15 connected to the free end of the driving shaft 12, a main transmission wheel 16 being arranged on the driving gear plate 15, and a transmission shaft 7 connected to the inner wall of the housing 101, and the main transmission wheel 16 and the slave transmission wheel 17 are both connected to the transmission shaft 7.

[0053] In this embodiment, by providing two toothed disc assemblies 31, the micelles can first be broken to a certain size in the toothed disc assembly 31 near the liquid inlet chamber 2, and then flow to the toothed disc assembly 31 near the liquid outlet chamber 14 for the next stage of breaking to a desired size. The combination of the two can effectively break the polymer swollen micelles to improve the dissolution efficiency of the polymer particles. Preferably, in order to further improve the forced stretching effect, a multi-stage mass transfer method of connecting more toothed disc assemblies 31 in series can be selected.

[0054] Combination Figure 5-7As shown, the center of the driven gear plate 6 is connected to the driven shaft 5, the center of the driving gear plate 15 is connected to the driving shaft 12, the driven gear plate 6 is connected to the slave transmission wheel 17 through gear engagement, and the driving gear plate 15 is connected to the main transmission wheel 16 through gear engagement. By designing driven gear plates 6 and driving gear plates 15 of different sizes, the rotational speed of the moving gear plate 4 of the gear plate assembly 31 close to the liquid inlet chamber 2 can be adjusted and controlled to achieve the desired speed change effect to meet the pretreatment of dry powder polymer.

[0055] like Figure 6 As shown, at least one through hole 18 is formed on the disc surface of the driven gear disc 6 and the driving gear disc 15 to ensure that the polymer particles can pass through the transfer chamber 8 .

[0056] In such Figure 2 In the preferred embodiment shown, the outer diameter of the fixed toothed disc 3 in the toothed disc assembly 31 near the liquid outlet chamber 14 is larger than 1 / 3 of the outer diameter of the fixed toothed disc 3 in the toothed disc assembly 31 near the liquid inlet chamber 2, and the outer diameter of the movable toothed disc 4 in the toothed disc assembly 31 near the liquid outlet chamber 14 is larger than 1 / 3 of the outer diameter of the movable toothed disc 4 in the toothed disc assembly 31 near the liquid inlet chamber 2. This arrangement can provide greater centrifugal force to achieve better extrusion, shearing and stretching effects.

[0057] Furthermore, if Figure 2 As shown, the region of the driving shaft 12 located in the liquid outlet chamber 14 may also be connected to a stirring blade 13. The stirring blade 13 may provide centrifugal force for the liquid in the liquid outlet chamber 14, so that the liquid is pressurized and enters the liquid outlet 9.

[0058] Furthermore, if Figure 2 As shown, the driving unit 11 can be a driving motor, and the driving motor and the shell 101 can be fixedly connected through the fixed shaft 10. The driving shaft of the driving motor is connected to the driving shaft 12, and the driving shaft 12 axially passes through the fixed shaft 10 and the shell 101 in sequence and enters the shell 101.

[0059] The following describes the specific operation process of dissolving the dry powder polymer using the first forced stretching quick dissolving device 100 of the embodiment of the present invention: prepare the first liquid storage tank and the second liquid storage tank in advance, and preliminarily prepare the polymer dispersion solution in the first liquid storage tank according to the polymer concentration required for the on-site operation. The first liquid storage tank is connected to the liquid inlet 1 through a pipeline, and the liquid outlet 9 is connected to the second liquid storage tank through a pipeline. The motor is turned on, and the motor drives the driving shaft 12 to rotate. The driving shaft 12 drives the stirring blades 13, the movable toothed disc 4 in the toothed disc assembly 31 close to the liquid outlet chamber 14, and the driving gear disc 15 to rotate. The driving gear disc 15 drives the main transmission wheel 16 and the slave transmission wheel 17 to rotate axially, and the slave transmission wheel 17 drives the driven gear disc 6 to rotate, thereby driving the driven shaft 5 and the movable toothed disc 4 in the toothed disc assembly 31 close to the liquid inlet chamber 2 to rotate. When the polymer dispersed solution enters the liquid inlet chamber 2, the suction effect generated by the liquid suction disc 41 of the movable gear disc 4 sucks the polymer dispersed solution into the gear disc assembly 31 near the liquid inlet chamber 2, and after the preliminary treatment is completed by extrusion and shearing of the spacing 402 and the matching gap 401 on the first gear disc 42 and the second gear disc 43, it enters the transfer chamber 8, passes through the perforations 18 in the driven gear disc 6 and the driving gear disc 15, and under the suction effect of the liquid suction disc 41 of the gear disc assembly 31 near the liquid outlet chamber 14, it enters the first gear disc 42 and the spacing 402 and the matching gap 401 on the second gear disc 43 in the gear disc assembly 31 near the liquid outlet chamber 14, and is extruded and sheared to complete the final treatment, and enters the liquid outlet chamber 14, and is discharged into the second liquid storage tank through the liquid outlet 9 under the stirring of the stirring blades 13 and the centrifugal action.

[0060] The following is a specific embodiment of the wire aging device 200 of the present invention, and the detailed parameters of its structure are as follows:

[0061] Centrifugal pump 10 displacement is 10~30m 3 / h; the dry powder silo 204 of the dry powder feeder 26 can meet the one-time feeding of 200-250kg and is equipped with a micro-silo wall vibrator; the screw feeder 205 is composed of a variable frequency motor, a reducer, a spiral shaft, etc., and the solid feeding speed is controllable, wherein the speed range of the screw pump is 0-120 rpm and adjustable, and the solid feeding speed is adjustable at 0-270kg / h; the gouache mixer 202 may have a conical shell, and the sprayer 212 may be distributed in a ring shape by dozens of nozzles, which mainly plays the role of mixing the water strips ejected by high pressure with the powder, and can also be used for automatic rotation cleaning and cyclone cleaning of the inner wall of the conical shell after the gouache is mixed, and the nozzle performs high-pressure flushing on the inner wall of the conical shell, etc., and the residue on the inner wall of the conical shell is cleaned in time; the maximum speed of the movable gear disc 4 of the first forced stretching instant dissolving device 100 and the second forced stretching instant dissolving device 208 is 3000 rpm. The mature pipeline has a pipeline model of DN100, a pipe length of 500m, and a displacement of 20m 3 ·h -1The flow rate is 0.707m / s; the PLC system can select a PLC explosion-proof control system, which adopts an explosion-proof design and can be shut down with one button; the PLC explosion-proof control system can display and control the key operating parameters of the entire system; the key operating parameters of the device's rapid dispersion system and forced dissolution system are adjusted and monitored in real time, and the parameters include the water flow rate of the water inlet 210, the speed of the screw feeder, the water flow rate, the operating speed of the first forced stretching instant dissolution device 100, the operating speed of the second forced stretching instant dissolution device 208, etc.

[0062] The online aging device 200 of the embodiment of the present invention can improve the concentration of mother liquor preparation, liquid feeding speed, shorten the dissolution time, thereby eliminating the aging tank, reducing the equipment area and weight, and saving the space occupied by offshore platform operations. The device occupies a total area of ​​26.5m 2 , with a total weight of 6.19t; it can achieve the online preparation and maturation requirements of the maximum concentration of dry powder polymer of 12000mg / L, while meeting the maximum injection speed of not less than 450m 3 / d, high injection speed can shorten the construction time and reduce the construction cost.

[0063] When the online aging device 200 of the embodiment of the present invention is used to dissolve the dry powder polymer, the inventors prepared dry powder polymer solutions of different concentrations in the room according to conventional methods. The result data showed that when the concentration was 8000-12000 mg·L -1 When the concentration of dry powder polymer increases, the viscosity of the dry powder polymer aqueous solution increases, and is between 921 and 3868 mPa·s, which can reflect good water phase thickening performance.

[0064] The online aging device 200 of the embodiment of the invention can achieve a maximum concentration of 12000 mg·L -1 When the concentration of the prepared polymer is 10000 mg·L -1 The best operating parameter is the rotor speed of 2000r·min -1 , the viscosity retention rate is 77.8%; when the prepared polymer concentration is 12000mg·L -1 The best operating parameter is the rotor speed of 2500r·min -1 , viscosity retention rate 67.2%.

[0065] It can be seen that after the dry powder polymer is dissolved by the online aging device 200 of the embodiment of the present invention, the dry powder polymer gel can have better viscosity. Within a certain polymer concentration range, the viscosity retention rate is higher and the viscosity loss is smaller.

[0066] In addition, if Figure 8As shown, the initial gelling state after dissolving dry powder polymers of different concentrations using the online aging device 200 of the embodiment of the present invention can still maintain a good gelling state after standing for 30 days, which further verifies the better effect of the online aging device 200 of the embodiment of the present invention in dissolving dry powder polymers.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An online aging device, characterized in that: include: A dry powder feeder, a water controller, a gouache mixer, a jet gouache mixer, a first forced stretching quick-dissolving device and a tubular maturation device, wherein the water controller is used to deliver a portion of a predetermined amount of water to the gouache mixer and another portion to the jet gouache mixer, the water entering the gouache mixer is used to form a vortex and mix with the dry powder material from the dry powder feeder before entering the jet gouache mixer together, the water delivered to the jet gouache mixer and the mixed liquid from the gouache mixer are mixed in the jet gouache mixer and then enter the first forced stretching quick-dissolving device and the tubular maturation device in sequence.

2. The online aging device according to claim 1, characterized in that: The water controller includes a centrifugal pump connected to the liquid inlet of the gouache mixer through a first pipeline, the centrifugal pump is connected to the water inlet of the online aging device through a second pipeline, a filter is arranged on the second pipeline, a pressure sensor component and an electromagnetic flowmeter component are arranged on the first pipeline, and a first remote control integration is connected to the electromagnetic flowmeter component, the pressure sensor component and the centrifugal pump at the same time, and the jet gouache mixer is connected between the first pipeline and the first forced stretching instant dissolution device.

3. The online aging device according to claim 1 or 2, characterized in that: The top of the water-powder mixer is provided with a sprayer for making the water entering the mixer form a vortex. The top of the water-powder mixer is provided with a dry powder feed port, and the dry powder feeder is connected with the dry powder feed port.

4. The online aging device according to claim 3, characterized in that: The dry powder feeder comprises a dry powder silo and a screw feeder located between the dry powder silo and the dry powder feed port, and a silo wall vibrator is installed on the outer side wall of the dry powder silo.

5. The online aging device according to claim 1 or 2, characterized in that: A static mixer may be selectively connected between the jet-type gouache mixer and the first forced stretching instant dissolving device.

6. The online aging device according to claim 5, characterized in that: A second forced stretching quick dissolving device may be selectively connected between the first forced stretching quick dissolving device and the tubular aging device.

7. The online aging device according to claim 6, characterized in that: The first forced stretching instant dissolving device has the same structure as the second forced stretching instant dissolving device, and the first forced stretching instant dissolving device includes a shell; a dissolving unit located in the shell, the dissolving unit divides the shell into a liquid inlet chamber and a liquid outlet chamber, and the shell is formed with a liquid inlet connected to the liquid inlet chamber and a liquid outlet connected to the liquid outlet chamber; and a driving unit connected to the dissolving unit, wherein the dissolving unit includes a driving shaft connected to the driving shaft of the driving unit and a gear assembly connected to the driving shaft, the gear assembly includes a moving gear connected to the driving shaft and a fixed gear fixedly connected to the inner wall of the shell, the outer side of the fixed gear is the liquid inlet chamber, and the outer side of the moving gear is The liquid outlet cavity, the movable gear plate includes a liquid suction plate and a plurality of gear plates which are coaxially connected in the direction toward the liquid outlet cavity and whose outer diameter size groups gradually increase. A matching gap is formed between the inner periphery of the fixed gear plate and the outer periphery of the movable gear plate, and between the disc surface of the fixed gear plate and the disc surface of the movable gear plate. Spacings are formed at equal intervals on the outer periphery of each of the gear plates, wherein the driving shaft drives the movable gear plate to rotate relative to the fixed gear plate under the drive of the driving shaft of the driving unit, the liquid suction plate is used to suck the liquid from the liquid inlet into the liquid inlet cavity and guide it to the spacing and the matching gap, and the liquid enters the liquid outlet cavity after being sheared, squeezed and stretched in the spacing and the gap and is discharged from the liquid outlet.

8. The online aging device according to claim 7, characterized in that: Among the adjacent toothed discs, the spacing on the toothed disc with a smaller outer diameter is greater than the spacing on the toothed disc with a larger outer diameter.

9. The online aging device according to claim 7, characterized in that: Two toothed disc assemblies are arranged in the shell, a transfer chamber is formed between the two toothed disc assemblies, the outer sides of the two toothed disc assemblies are the liquid inlet chamber and the liquid outlet chamber respectively, a speed change unit is arranged in the transfer chamber, the toothed disc assembly close to the liquid outlet chamber is connected to the driving shaft, the speed change unit includes a driven shaft connected to the toothed disc assembly close to the liquid inlet chamber, a driven gear plate connected to the driven shaft, a slave transmission wheel is arranged on the driven gear plate, a driving gear plate connected to the free end of the driving shaft, a main transmission wheel is arranged on the driving gear plate, and a transmission shaft connected to the inner wall of the shell, and the main transmission wheel and the slave transmission wheel are both connected to the transmission shaft.

10. The online aging device according to claim 7, characterized in that: The area of ​​the driving shaft located in the liquid outlet cavity is also connected with a stirring blade.

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