阅读说明：本技术 高粘易剪切流体加料静混装置及方法 (High-viscosity easy-shearing fluid feeding static mixing device and method ) 是由 李先杰 管错 张健 赵春花 胡科 杜虹 于 2021-08-31 设计创作，主要内容包括：本发明涉及一种高粘易剪切流体加料静混装置及方法,包括如下部件：主体混合管,主体混合管内设置有挡流板以及若干空心管,空心管设置于挡流板和主体混合管的进料端端壁之间,空心管上设置有贯穿其管壁的通孔,主体混合管的两端端壁上分别设置有进料管和出料管或主体混合管的两端端壁上分别设置有进料口和出料口；加料输送管,加料输送管的第一端贯穿主体混合管的管壁与送料装置连接,第二端位于主体混合管内与空心管流体导通连接。本发明通过增加分流混合板,使得高粘易剪切流体与加料二次混合,进一步提高混合均匀性。(The invention relates to a high-viscosity easy-shearing fluid feeding static mixing device and a method, which comprises the following components: the main mixing pipe is internally provided with a flow baffle and a plurality of hollow pipes, the hollow pipes are arranged between the flow baffle and the end wall of the feeding end of the main mixing pipe, the hollow pipes are provided with through holes penetrating through the pipe walls of the hollow pipes, the end walls of the two ends of the main mixing pipe are respectively provided with a feeding pipe and a discharging pipe, or the end walls of the two ends of the main mixing pipe are respectively provided with a feeding hole and a discharging hole; and the first end of the feeding conveying pipe penetrates through the pipe wall of the main body mixing pipe to be connected with the feeding device, and the second end of the feeding conveying pipe is positioned in the main body mixing pipe and is communicated and connected with the fluid of the hollow pipe. According to the invention, the high-viscosity easy-shearing fluid and the feeding material are secondarily mixed by adding the shunting mixing plate, so that the mixing uniformity is further improved.)

1. The high-viscosity shearing fluid feeding static mixing device is characterized by comprising the following components:

the mixing device comprises a main body mixing pipe (5), wherein a flow baffle plate (6) and a plurality of hollow pipes (4) are arranged in the main body mixing pipe (5), the hollow pipes (4) are arranged between the flow baffle plate (6) and the end wall of the feeding end of the main body mixing pipe (5), through holes (9) penetrating through the pipe wall of the hollow pipes (4) are formed in the hollow pipes (4), the end walls of the two ends of the main body mixing pipe (5) are respectively provided with a feeding pipe (1) and a discharging pipe (8), or the end walls of the two ends of the main body mixing pipe (5) are respectively provided with a feeding port and a discharging port;

reinforced conveyer pipe (2), the first end of reinforced conveyer pipe (2) runs through the pipe wall and the material feeding unit of main part hybrid tube (5) are connected, and the second end is located in main part hybrid tube (5) with hollow tube (4) fluid switch on connects.

2. The high viscosity shear fluid static mixer device in charge of claim 1, further comprising a flow-dividing mixing plate (7), wherein the right end of the flow-dividing mixing plate (7) is fixedly connected with the inner pipe wall of the discharge end of the main mixing pipe (5), the upper end of the flow-dividing mixing plate (7) is fixed on the upper end of the inner pipe wall of the main mixing pipe (5), the lower end of the flow-dividing mixing plate is fixedly connected with the flow-blocking plate (6), and the flow-blocking plate (6), the flow-dividing mixing plate (7) and the main mixing pipe (5) together define a secondary mixing chamber (11).

3. The high viscosity shear fluid feeding static mixing device according to claim 1, further comprising a connector (3), wherein the feeding conveying pipe (2) is provided with a shunting hole (10), a first end of the connector (3) is connected with the shunting hole (10), and a second end of the connector (3) is connected with the feeding hole of the hollow pipe (4).

4. A high viscosity shear fluid charging static mixing device according to claim 3, wherein a one-way valve is provided in the connector (3) to prevent the high viscosity shear fluid to be mixed from flowing back into the charging duct (2) through the hollow tube (4), the connector (3) being formed by connecting coaxial connecting tubes of different diameters in series.

5. A high viscosity shear fluid charging static mixing device according to claim 4, wherein said connector (3) is formed by coaxial connecting pipes of gradually decreasing diameter connected in series.

6. A high viscosity shear fluid fed static mixing device according to claim 1, wherein the hollow tubes (4) are arranged in a matrix form or randomly, and the number of the branch holes (10) on the feed delivery pipe (2) is the same as the number of the hollow tubes (4).

7. A high viscosity shear fluid fed static mixing device according to claim 1, wherein the through holes (9) are uniformly distributed on the hollow tube (4) or randomly distributed on the hollow tube (4) in the axial or circumferential direction.

8. The high viscosity shear fluid charging static mixing device according to claim 1, wherein one end of the flow baffle plate (6) connected with the hollow pipe (4) is connected through a sealing clamping groove.

9. The high viscosity shear-prone fluid feeding static mixing device according to claim 1, wherein the viscosity of the high viscosity shear-prone fluid is 100 to 100000 mPa-s.

10. A method of static mixing a high viscosity shear fluid fed static mixing device as claimed in any one of claims 2 to 9, comprising the steps of:

high viscous shear fluid passes through inlet pipe (1) or the feed inlet gets into main part hybrid tube (5), wait to feed in raw material and pass through reinforced conveyer pipe (2) get into hollow tube (4), and pass through on hollow tube (4) through-hole (9) get into main part hybrid tube (5) with high viscous shear fluid mixes, then get into after secondary mixing chamber (11) mixes once more through discharging pipe (8) or the discharge gate output.

Technical Field

The invention relates to a high-viscosity easy-shearing fluid feeding static mixing device and method, and belongs to the field of oilfield development.

Background

The static charging and mixing of high-viscosity fluid is widely applied in various production fields, and aims to ensure that different materials can be fully mixed so as to ensure that the mixture can play the best action effect. In the process of oil field development, in order to better play the oil displacement and profile control functions of high-viscosity fluids such as polymer solution and the like, additives such as surfactant, cross-linking agent and the like are added into the polymer solution, or the polymer solution is diluted into target liquid by water and injected into a stratum; in the coating processing aspect, additives such as diluents, curing agents, accelerators and the like are added to fluids such as high-viscosity epoxy resins and the like. In the process of adding the liquid phase material into the high viscosity fluid, the high viscosity fluid as the liquid phase main body has high viscosity, so that the material is not easy to dissolve and diffuse in the high viscosity fluid, and the mixing degree is low. High-speed mechanical stirring or an additional mixing device and space are needed for fully and efficiently mixing the high-viscosity high-shear fluid, but the high-speed stirring in the mixing process can cause part of the high-viscosity high-shear fluid to be sheared, so that the physical properties of the high-viscosity high-shear fluid are changed, and the mixing effect is influenced.

One of the prior arts discloses a large static mixer, which is a mixing device composed of a pipe and a mixing unit disposed inside the pipe, wherein the mixing unit is composed of different blades. This prior art mainly relies on unique bulge design for mixed fluid produces bigger vortex when flowing through every blade, thereby increases substantially mixed efficiency. However, for a high viscosity fluid, it is difficult to completely mix it with the feed by simple turbulence during the flow process after the fluid of general viscosity is blended.

The other prior art discloses a static mixer for high-viscosity liquid-phase materials, wherein a mixing mechanism comprises a plurality of mixing sections and a flow guide section which are connected in a non-sequential manner, fluid needs to pass through a spray gun system for many times in the mixing process, flowing mixing power is provided by the spray gun system, the high-speed shearing of the outlet of the spray gun can destroy the properties of part of the high-viscosity fluid which is not resistant to shearing, and the mode disclosed by the prior art is not suitable for charging and mixing non-Newtonian fluids such as polymers.

Disclosure of Invention

Aiming at the technical problems, the invention provides a feeding static mixing device and method for high-viscosity easy-shearing fluid, which can solve the problems of the existing feeding mixing device for the high-viscosity fluid and provide technical support for quickly and efficiently completing feeding and mixing of the high-viscosity easy-shearing fluid.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-viscosity shearing fluid feeding static mixing device comprises the following components:

the main body mixing pipe is internally provided with a flow baffle and a plurality of hollow pipes, the hollow pipes are arranged between the flow baffle and the end wall of the feeding end of the main body mixing pipe, through holes penetrating through the pipe wall of the hollow pipes are formed in the hollow pipes, the end walls of two ends of the main body mixing pipe are respectively provided with a feeding pipe and a discharging pipe, or the end walls of two ends of the main body mixing pipe are respectively provided with a feeding hole and a discharging hole;

and the first end of the feeding conveying pipe penetrates through the pipe wall of the main body mixing pipe and is connected with the feeding device, and the second end of the feeding conveying pipe is positioned in the main body mixing pipe and is in fluid conduction connection with the hollow pipe.

The high-viscosity easy-shearing fluid feeding static mixing device preferably further comprises a shunting mixing plate, the right end of the shunting mixing plate is fixedly connected with the inner pipe wall of the discharge end of the main body mixing pipe, the upper end of the shunting mixing plate is fixed at the upper end of the inner pipe wall of the main body mixing pipe, the lower end of the shunting mixing plate is fixedly connected with the flow baffle plate, and the flow baffle plate, the shunting mixing plate and the main body mixing pipe define a secondary mixing cavity together.

The high-viscosity easy-shearing fluid feeding static mixing device preferably further comprises a connector, a shunting hole is formed in the feeding conveying pipe, the first end of the connector is connected with the shunting hole, and the second end of the connector is connected with the feeding hole of the hollow pipe.

The high viscosity shear fluid feeding static mixing device is characterized in that a one-way valve is preferably arranged in the connector to prevent the high viscosity shear fluid to be mixed from flowing back into the feeding conveying pipe through the hollow pipe, and the connector is formed by connecting coaxial connecting pipes with different diameters in series.

The high-viscosity easy-shearing fluid feeding static mixing device is preferably characterized in that the connector is formed by connecting coaxial connecting pipes with gradually-reduced diameters in series.

The high-viscosity easy-shearing fluid feeding static mixing device is characterized in that preferably, the hollow pipes are arranged in a matrix form or a random arrangement, and the number of the branch holes on the feeding conveying pipe is consistent with that of the hollow pipes.

The high-viscosity easy-shearing fluid feeding static mixing device is characterized in that preferably, the through holes are uniformly distributed on the hollow pipe in the axial direction or the circumferential direction or are randomly distributed on the hollow pipe.

The high-viscosity easy-shearing fluid feeding static mixing device is characterized in that preferably, one end of the flow baffle, which is connected with the hollow pipe, is connected with the sealing clamping groove.

The feeding static mixing device for the high-viscosity easy-shearing fluid is preferably used for feeding the high-viscosity easy-shearing fluid with the viscosity of 100-100000 mPa & s.

Based on the high-viscosity shearing fluid feeding static mixing device, the invention also provides a static mixing method of the device, which comprises the following steps:

and high-viscosity shear fluid enters the main body mixing pipe through the feeding pipe or the feeding hole, enters the hollow pipe through the feeding conveying pipe after being fed, enters the main body mixing pipe through the through hole in the hollow pipe to be mixed with the high-viscosity shear fluid, enters the secondary mixing cavity, is mixed again, and is output through the discharging pipe or the discharging hole.

Due to the adoption of the technical scheme, the invention has the following advantages:

1. according to the invention, the porous hollow pipes with adjustable inner diameters and intervals are added into the main mixing pipe to control the feeding speed and the uniform dispersion degree of feeding, so that the shearing effect on high-viscosity fluid caused by high-speed stirring is avoided in the feeding and mixing process, the mixing process is completed only by the inertia of the self-flowing of the high-viscosity fluid, and no additional mixing power is required.

2. According to the invention, the high-viscosity easy-shearing fluid and the feeding material are secondarily mixed by adding the shunting mixing plate, so that the mixing uniformity is further improved.

Drawings

FIG. 1 is a schematic overall view of a high viscosity and shear-sensitive fluid feeding static mixing device according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of a high viscosity shear fluid feed static mixing device provided in accordance with this embodiment of the present invention;

FIG. 3 is a schematic view of a connector in a high viscosity shear fluid loading static mixing device provided in accordance with this embodiment of the present invention;

FIG. 4 is a schematic view of a hollow tube in a high viscosity shear fluid feed static mixing device provided in accordance with this embodiment of the present invention;

FIG. 5 is a schematic view of a feed delivery tube in the high viscosity shear fluid feed static mixing device provided by this embodiment of the present invention;

the respective symbols in the figure are as follows:

1-a feed pipe; 2-a feeding conveying pipe; 3-a connector; 4-hollow pipe; 5-a main body mixing tube; 6-flow baffle; 7-split mixing plates; 8-a discharge pipe; 9-a through hole; 10-a shunt hole; 11-secondary mixing chamber.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," "third," "fourth," "upper," "lower," "left," and similar terms in the context of the present invention do not denote any order, quantity, or importance, but rather the terms "first," "second," "third," "fourth," "upper," "lower," "left," and similar terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As shown in FIG. 1, the invention provides a high viscosity and easy shearing fluid feeding static mixing device, which comprises the following components: a main body mixing pipe 5, wherein a flow baffle 6 and a plurality of hollow pipes 4 are arranged in the main body mixing pipe 5, the hollow pipes 4 are arranged between the flow baffle 6 and the end wall of the feeding end of the main body mixing pipe 5, through holes 9 penetrating through the pipe wall of the hollow pipes 4 are arranged on the hollow pipes 4, a feeding pipe 1 and a discharging pipe 8 are respectively arranged on the end walls of the two ends of the main body mixing pipe 5, or a feeding port and a discharging port are respectively arranged on the end walls of the two ends of the main body mixing pipe 5; and the first end of the feeding conveying pipe 2 penetrates through the pipe wall of the main body mixing pipe 5 to be connected with the feeding device, and the second end of the feeding conveying pipe 2 is positioned in the main body mixing pipe 5 and is in fluid conduction connection with the hollow pipe 4. According to the invention, the porous hollow pipes with adjustable inner diameters and intervals are added into the main mixing pipe to control the feeding speed and the uniform dispersion degree of feeding, so that the shearing effect on high-viscosity fluid caused by high-speed stirring is avoided in the feeding and mixing process, the mixing process is completed only by the inertia of the self-flowing of the high-viscosity fluid, and no additional mixing power is required.

In this embodiment, the flow baffle 6 (the flow baffle 6 is a semicircular plate-shaped structure and fixed on the inner pipe wall at the lower end of the main mixing pipe 5) divides the main mixing pipe 5 into an upper part and a lower part, so that the high viscosity and easy shear fluid to be mixed entering the main mixing pipe 5 is gathered at the bottom of the pipe body, and gradually rises along with the gathering of the fluid, and flows through the hollow pipes 4 after rising to a certain degree, and enters the other side of the main mixing pipe 5.

In a preferred embodiment of the present invention, as shown in fig. 1 and 2, the mixing device further comprises a flow-dividing mixing plate 7, wherein the right end of the flow-dividing mixing plate 7 is fixedly connected with the inner pipe wall at the discharge end of the main mixing pipe 5, the upper end of the flow-dividing mixing plate 7 is fixedly connected with the upper end of the inner pipe wall of the main mixing pipe 5, and the lower end is fixedly connected with the flow baffle plate 6, and the flow baffle plate 6, the flow-dividing mixing plate 7 and the main mixing pipe 5 together define a secondary mixing chamber 11. The shunting mixing plate 7 can carry out shunting treatment on the mixed fluid entering the upper half part of the main body mixing pipe 5, so that the mixed fluid is divided into two parts to enter the area near the discharge pipe 8 of the main body mixing pipe 5, and the mixed fluid is mixed again in the secondary mixing cavity 11 between the flow baffle plate 6 and the discharge pipe 8 to form double-vortex flow by depending on the flow pressure of the mixed fluid and the fed material and the gravity of the fluid, thereby further mixing the fluid.

In a preferred embodiment of the present invention, as shown in fig. 1 and 3, the feed delivery pipe 2 is further provided with a connector 3, the feed delivery pipe is provided with a diversion hole 10, a first end of the connector 3 is connected with the diversion hole 10, and a second end of the connector 3 is connected with the feed inlet of the hollow pipe 4. The number and the radius of the diversion holes 10 are determined according to the number and the radius of the hollow pipes 4.

The one end of connector 3 passes through the screw thread with reinforced conveyer pipe 2 and is connected with the sealing washer, and the other end passes through the sealing washer and is connected with hollow tube 4, and connector 3 has the setting of different external diameter steps, and the radial setting of interface step matches with the internal diameter of hollow tube 4, is when changing hollow tube 4 in order to according to reinforced demand, and realization reinforced conveyer pipe 2 that can be better is connected with hollow tube 4.

In a preferred embodiment of the invention, a non-return valve is provided in the connector 3 to prevent the high viscosity shear fluid to be mixed from flowing back into the feed duct 2 through the hollow tube 4, the connector 3 being formed by coaxial connecting tubes of different diameters connected in series.

In a preferred embodiment of the invention, the connector 3 is formed by coaxial connecting tubes of progressively smaller diameter connected in series, as shown in figure 3.

In a preferred embodiment of the invention, the hollow tubes 4 are arranged in a matrix or random arrangement, and the number of distribution openings 10 in the feed delivery tube 2 corresponds to the number of hollow tubes 4.

In a preferred embodiment of the invention, the through-openings 9 are distributed uniformly or randomly over the hollow tube 4 in the axial or circumferential direction on the hollow tube 4. The number, shape, arrangement and density of the through holes 9 can be controlled according to the properties of the mixed material and the amount of the mixed material added.

In a preferred embodiment of the present invention, one end of the flow baffle 6 connected with the hollow tube 4 is connected with a sealing slot. The flow baffle 6 intercepts the high-viscosity easy-shearing fluid to be mixed, then the liquid level rises, when the high-viscosity easy-shearing fluid flows through the hollow pipe 4, the mixed fluid uniformly flows through the hollow pipe 4, at the moment, the mixed fluid in the hollow pipe 4 uniformly flows into the liquid to be mixed through the through holes 9, the more dense the through holes 9 are on the hollow pipe 4, the smaller the space between the hollow pipes 4 is, and the lower the flow velocity of the mixed fluid is, the better the mixing effect is.

The discharging pipe 8 is connected with the part of the main body mixing pipe 5, the part is provided with a long opening, two parts of fluid passing through the flow dividing mixing plate 7 form collision vortex, the collision vortex is further mixed and then output, and the fluid which is fully mixed conveniently enters the discharging pipe 8 and is output to a part needing liquid.

In a preferred embodiment of the invention, the viscosity of the high viscosity shear-sensitive fluid is from 100 to 100000 mPa.s.

Based on the high-viscosity shear fluid feeding static mixing device, the invention also provides a static mixing method of the device, which comprises the following steps:

high viscous shear fluid enters the main body mixing tube 5 through the feeding tube 1 or the feeding hole, enters the hollow tube 4 through the feeding conveying tube 2 to enter the main body mixing tube 5 through the through hole 9 on the hollow tube 4 to be mixed with the high viscous shear fluid, and then enters the secondary mixing cavity 11 to be mixed again and then is output through the discharging tube 8 or the discharging hole.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.