Synthesis reaction kettle for cross-linking agent for fracturing fluid

Abstract

The utility model provides a cross-linking agent synthesis reaction kettle for fracturing fluid, and belongs to the technical field of fracturing fluid production. Comprising a reaction kettle body, a feeding port is formed in the top of the reaction kettle body, a rotating shaft is rotationally arranged in the reaction kettle body, one end of the rotating shaft vertically penetrates out of the top of the reaction kettle body and is connected with a first driving part used for driving the rotating shaft to rotate, and the part, in the reaction kettle body, of the rotating shaft is provided with a plurality of stirring rollers in the circumferential direction of the rotating shaft; the multiple stirring rollers are slidably connected to the rotating shaft in the radial direction of the rotating shaft, scrapers are arranged at the ends, away from the rotating shaft, of the stirring rollers, and second driving parts used for driving the stirring rollers to move to make the scrapers make contact with the inner side wall of the reaction kettle body are further arranged on the rotating shaft. The utilization rate of raw materials and the stirring effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing fluid production, in particular to a cross-linking agent synthesis reaction kettle for fracturing fluid. Background Art

[0002] By applying high pressure through ground equipment, a suitable fluid is injected into the developed reservoir. When the pressure exceeds the formation fracture pressure, the fluid will split the reservoir to create cracks, while carrying proppants and spreading into the cracks. After the pressure is released and the fluid breaks and returns to the formation, the proppants fill the newly created cracks to form a fluid channel with high conductivity, thereby increasing the production capacity of oil and gas wells or enhancing the injection capacity of water wells. This method of increasing oil reservoir production is called hydraulic fracturing, and the fluid used is called fracturing fluid.

[0003] During the production process of cross-linking agents for fracturing fluids, a reactor is required to react. Raw materials are placed in the reactor and stirred continuously to accelerate the reaction. However, the raw materials usually have a certain viscosity. After being placed in the reactor, some of the raw materials will adhere to the inner wall of the reactor and cannot be fully utilized, resulting in uneven stirring. Utility Model Content

[0004] In view of the above problems, the utility model provides a cross-linking agent synthesis reactor for fracturing fluid.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] Provided is a cross-linking agent synthesis reactor for fracturing fluid, comprising a reactor body, a feeding port being provided at the top of the reactor body, a rotating shaft being rotatably arranged inside the reactor body, one end of the rotating shaft vertically passing through the top of the reactor body and being connected to a first driving member for driving the rotating body, a portion of the rotating shaft inside the reactor body being provided with a plurality of stirring rollers along its circumference, the plurality of stirring rollers being connected to the rotating shaft in a radially sliding manner along the rotating shaft, a scraper being provided at one end of the stirring roller away from the rotating shaft, and a second driving member for driving the stirring roller to move so that the scraper contacts the inner side wall of the reactor body is also provided on the rotating shaft.

[0007] Furthermore, the first driving member includes a first bevel gear and a second bevel gear that are meshed and connected. The first bevel gear is rotatably arranged on the top of the reactor body and is coaxially fixedly connected to the rotating shaft. A driving motor is provided on the top of the reactor body to drive the second bevel gear to rotate.

[0008] Furthermore, a plurality of mounting cylinders are arranged on the outer wall of the rotating shaft around its circumference, and a plurality of stirring rollers are corresponding to each other and slidably connected in the mounting cylinders. An elastic member for driving the stirring rollers away from the inner wall of the reactor body is arranged in the mounting cylinders.

[0009] Furthermore, the second driving member includes a lifting cylinder, a slide groove connected to the mounting tube is vertically opened on the top of the rotating shaft, a mounting groove is opened along the axial direction of the mounting tube at one end close to the slide groove, one end of the stirring roller extends into the mounting groove and is fixedly connected with a push block, the lifting cylinder is vertically arranged on the top of the reactor body, the piston rod of the lifting cylinder is slidably passed through the slide groove, the outer diameter of the piston rod is the same as the inner diameter of the slide groove, a conical block is provided on the end of the piston rod of the lifting cylinder, and the conical part of the conical block is opposite to the bottom wall of the slide groove below, and the side of the push block away from the stirring roller is movably abutted against the conical surface of the conical block.

[0010] Furthermore, the elastic member includes a spring, which is arranged in the installation groove, and two ends of the spring are respectively fixedly connected to the push block and the bottom wall of the installation groove.

[0011] Furthermore, the stirring rollers and scrapers are arranged in multiple layers on the outer wall of the rotating shaft, and the stirring rollers of two adjacent layers are staggered around the rotating shaft, and the bottom of the upper scraper is not higher than the top of the lower scraper in the vertical direction.

[0012] The beneficial effects of the utility model are as follows: a worker can pour raw materials into the interior of the reactor body through the feeding port, and then drive the rotating shaft to rotate through the first driving member, so that the stirring roller can stir the raw materials, thereby accelerating the reaction of the raw materials; the second driving member can drive the stirring roller to slide close to the inner wall of the reactor body, so that the scraper can frictionally contact the inner wall of the reactor body and scrape the raw materials on the inner wall, which has the advantages of improving the utilization rate of raw materials and improving the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a synthesis reactor for a cross-linking agent for fracturing fluid according to an embodiment of the present application.

[0014] Figure 2 It is a schematic internal side view of a cross-linking agent synthesis reactor for fracturing fluid according to an embodiment of the present application.

[0015] Figure 3 This is a schematic bottom view of the interior of a cross-linking agent synthesis reactor for fracturing fluid according to an embodiment of the present application.

[0016] Figure 4 This is a schematic diagram of the elastic component structure of a cross-linking agent synthesis reactor for fracturing fluid according to an embodiment of the present application.

[0017] Figure 5 This is a schematic diagram of the structure of the second driving component of a cross-linking agent synthesis reactor for fracturing fluid according to an embodiment of the present application.

[0018] Among them, 1. Reactor body; 11. Feeding port; 12. Mounting frame; 13. Discharging pipe; 14. Valve; 2. Rotating shaft; 21. Slide; 3. First driving member; 31. First bevel gear; 32. Second bevel gear; 33. Driving motor; 4. Stirring roller; 41. Scraper; 5. Second driving member; 51. Lifting cylinder; 511. Piston rod; 52. Conical block; 6. Mounting cylinder; 61. Mounting groove; 7. Push block; 8. Spring. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The present application discloses a cross-linking agent synthesis reactor for fracturing fluid, referring to Figure 1 , Figure 2 and Figure 3 , comprising a reactor body 1, a feeding port 11 is provided on the top of the reactor body 1, and a sealing cover is installed at the feeding port 11. A rotating shaft 2 is rotatably arranged inside the reactor body 1, one end of the rotating shaft 2 vertically passes through the top of the reactor body 1, and is connected to a first driving member 3 for driving itself to rotate. The part of the rotating shaft 2 inside the reactor body 1 is provided with a plurality of stirring rollers 4 along its circumference, and the plurality of stirring rollers 4 are connected to the rotating shaft 2 along the radial sliding direction of the rotating shaft 2. A scraper 41 is bolted to one end of the stirring roller 4 away from the rotating shaft 2, and a second driving member 5 for driving the stirring roller 4 to move so that the scraper 41 contacts the inner wall of the reactor body 1 is also installed on the rotating shaft 2. A discharge pipe 13 is welded to one side of the reactor body 1, and a valve 14 is installed on the discharge pipe 13.

[0021] In the embodiment of the present application, the staff can pour the raw materials into the reactor body 1 through the feeding port 11, and then drive the rotating shaft 2 to rotate through the first driving member 3, so that the stirring roller 4 can stir the raw materials, thereby accelerating the reaction of the raw materials. The stirring roller 4 can be driven to slide close to the inner wall of the reactor body 1 through the second driving member 5, so that the scraper 41 can frictionally contact the inner wall of the reactor body 1 and scrape the raw materials on the inner wall, which has the advantages of improving the utilization rate of the raw materials and improving the stirring effect. After the raw material reaction is completed, the valve 14 is opened, and the cross-linking agent for fracturing fluid synthesized in the reactor body 1 can be discharged through the discharge pipe 13.

[0022] Specifically, the first driving member 3 includes a first bevel gear 31 and a second bevel gear 32 that are meshed and connected. The first bevel gear 31 is rotatably arranged on the top of the reactor body 1 and is coaxially welded and fixed with the rotating shaft 2. A driving motor 33 is installed on the top of the reactor body 1, and the output shaft of the driving motor 33 is coaxially welded and fixed with the second bevel gear 32. When the driving motor 33 is started, the rotating shaft 2 can be driven to rotate through the first bevel gear 31 and the second bevel gear 32.

[0023] Furthermore, a plurality of mounting cylinders 6 are welded around the outer wall of the rotating shaft 2 circumferentially, and a plurality of stirring rollers 4 are corresponding one by one and slidably connected in the mounting cylinders 6 , and an elastic member for driving the stirring rollers 4 away from the inner wall of the reactor body 1 is installed in the mounting cylinders 6 .

[0024] Reference Figure 4 and Figure 5 The second driving member 5 includes a lifting cylinder 51. A chute 21 connected to the mounting tube 6 is vertically opened on the top of the rotating shaft 2. A mounting groove 61 is opened along its own axial direction at one end of the mounting tube 6 close to the chute 21. One end of the stirring roller 4 extends into the mounting groove 61 and is fixedly connected with a push block 7. A mounting frame 12 is bolted to the top of the reactor body 1 above the rotating shaft 2. The lifting cylinder 51 is vertically installed on the mounting frame 12, and the piston rod 511 of the lifting cylinder 51 is slidably penetrated in the chute 21. The outer diameter of the piston rod 511 is the same as the inner diameter of the chute 21. The end of the piston rod 511 of the lifting cylinder 51 is bolted to a conical block 52, and the conical portion of the conical block 52 faces the inner bottom wall of the chute 21 below. The side of the push block 7 away from the stirring roller 4 is movably abutted against the conical surface of the conical block 52.

[0025] In the embodiment of the present application, the lifting cylinder 51 is started and the piston rod 511 is driven downward, so that the conical surface of the conical block 52 can abut against the side of the push block 7 away from the stirring roller 4, and overcome the elastic force of the elastic member to drive the push block 7 to slide close to the inner wall of the reactor body 1 until the scraper 41 on the stirring roller 4 contacts the inner wall of the reactor body 1. While the push block 7 slides, the piston rod 511 continues to move downward, and finally, the outer wall of the piston rod 511 abuts against the push block 7, so that the scraper 41 remains in contact with the inner wall of the reactor body 1. When the lifting cylinder 51 drives the piston rod 511 to move upward, the elastic member can drive the push block 7 away from the reactor body 1, so that the scraper 41 loosens the inner wall of the reactor body 1.

[0026] During the rotation of the rotating shaft 2, the scraper 41 is in frictional contact with the inner wall of the reactor body 1 for a long time, which is easy to accelerate the wear of itself. Therefore, the lifting cylinder 51 can be started intermittently so that the scraper 41 scrapes the raw materials on the inner wall of the reactor body 1 after a period of time. The time can be set by the staff based on experience. Through this method of multiple interval scraping, not only can it ensure that the raw materials on the inner wall of the reactor body 1 can be fully stirred, but also it has the effect of increasing the service life of the scraper 41.

[0027] Specifically, the elastic member includes a spring 8 , which is installed in the installation groove 61 , and two ends of the spring 8 are respectively welded and fixed to the push block 7 and the inner bottom wall of the installation groove 61 .

[0028] Furthermore, the stirring rollers 4 and the scrapers 41 are installed in multiple layers on the outer wall of the rotating shaft 2, and the stirring rollers 4 of two adjacent layers are staggered around the rotating shaft 2, and the bottom of the upper scraper 41 is not higher than the top of the lower scraper 41 in the vertical direction. The scraping range of the scraper 41 on the inner wall of the reactor body 1 is increased, and the stirring effect on the raw materials is also improved.

[0029] The implementation principle of a cross-linking agent synthesis reactor for fracturing fluid in the embodiment of the present application is as follows: a worker can pour the raw materials into the reactor body 1 through the feeding port 11, and then drive the rotating shaft 2 to rotate through the first driving member 3, so that the stirring roller 4 can stir the raw materials, thereby accelerating the reaction of the raw materials; the stirring roller 4 can be driven by the second driving member 5 to slide close to the inner wall of the reactor body 1, so that the scraper 41 can frictionally contact the inner wall of the reactor body 1 and scrape the raw materials on the inner wall, which has the advantages of improving the utilization rate of the raw materials and improving the stirring effect.

[0030] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cross-linking agent synthesis reactor for fracturing fluid, characterized in that: The invention comprises a reactor body (1), wherein a feeding port (11) is provided at the top of the reactor body (1), a rotating shaft (2) is rotatably arranged inside the reactor body (1), one end of the rotating shaft (2) vertically passes through the top of the reactor body (1) and is connected to a first driving member (3) for driving the rotating shaft to rotate, a portion of the rotating shaft (2) inside the reactor body (1) is provided with a plurality of stirring rollers (4) along its circumference, the plurality of stirring rollers (4) are connected to the rotating shaft (2) in a radially sliding manner along the rotating shaft (2), a scraper (41) is provided at one end of the stirring roller (4) away from the rotating shaft (2), and a second driving member (5) is also provided on the rotating shaft (2) for driving the stirring roller (4) to move so that the scraper (41) contacts the inner wall of the reactor body (1).

2. A cross-linking agent synthesis reactor for fracturing fluid according to claim 1, characterized in that: The first driving member (3) comprises a first bevel gear (31) and a second bevel gear (32) which are meshed and connected, the first bevel gear (31) being rotatably arranged on the top of the reactor body (1) and being coaxially fixedly connected to the rotating shaft (2), and a driving motor (33) for driving the second bevel gear (32) to rotate is arranged on the top of the reactor body (1).

3. A cross-linking agent synthesis reactor for fracturing fluid according to claim 1, characterized in that: A plurality of mounting cylinders (6) are arranged on the outer wall of the rotating shaft (2) around the rotating shaft (2) itself, and the plurality of stirring rollers (4) correspond to each other one by one and are slidably connected in the mounting cylinders (6). An elastic member for driving the stirring rollers (4) away from the inner wall of the reactor body (1) is arranged in the mounting cylinders (6).

4. A cross-linking agent synthesis reactor for fracturing fluid according to claim 3, characterized in that: The second driving member (5) comprises a lifting cylinder (51), a slide groove (21) connected to the mounting cylinder (6) is vertically opened at the top of the rotating shaft (2), and a mounting groove (61) is opened along its own axial direction at one end of the mounting cylinder (6) close to the slide groove (21), one end of the stirring roller (4) extends into the mounting groove (61) and is fixedly connected with a push block (7), the lifting cylinder (51) is vertically arranged on the top of the reactor body (1), the piston rod (511) of the lifting cylinder (51) is slidably inserted into the slide groove (21), the outer diameter of the piston rod (511) is the same as the inner diameter of the slide groove (21), a conical block (52) is provided at the end of the piston rod (511) of the lifting cylinder (51), and the conical portion of the conical block (52) faces the inner bottom wall of the slide groove (21) below, and the side of the push block (7) away from the stirring roller (4) is movably abutted against the conical surface of the conical block (52).

5. A cross-linking agent synthesis reactor for fracturing fluid according to claim 4, characterized in that: The elastic member comprises a spring (8), the spring (8) is arranged in the installation groove (61), and the two ends of the spring (8) are respectively fixedly connected to the push block (7) and the inner bottom wall of the installation groove (61).

6. A cross-linking agent synthesis reactor for fracturing fluid according to any one of claims 1 to 5, characterized in that: The stirring rollers (4) and scrapers (41) are arranged in multiple layers on the outer wall of the rotating shaft (2), and the stirring rollers (4) of two adjacent layers are arranged circumferentially staggered around the rotating shaft (2), and the bottom of the scraper (41) of the upper layer is not higher than the top of the scraper (41) of the lower layer in the vertical direction.

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