A porous injection fracturing head for a fracturing wellhead device and its usage method

Abstract

The present invention relates to the technical field of fracturing wellheads, and discloses a porous injection fracturing head for fracturing wellhead equipment and its usage method, including a fixing frame. A transmission pipe is fixedly connected to the bottom of the fixing frame. A receiving groove is provided in the inner wall of the transmission pipe. External solution is transmitted to the inside of the transmission pipe through a water inlet pipe. During this process, when natural gas expands, the water flow inside the output pipe will move upward along the output pipe under the thrust and return to the inside of the transmission pipe again. At this time, the refluxed liquid will contact the first shunt block and the second shunt block again. Affected by the first shunt block, the second shunt block and the shape, the liquid will be shunted. The shunted water will flow along the outer walls of the second arc groove and the first arc groove. When the two different water flows interact, most of the impact force will be offset, causing the refluxed water to impact each other inside the transmission pipe. When the water flow passes through multiple first shunt blocks and second shunt blocks, the impact on the water pump by the impact force will be effectively weakened.

Description

Technical Field

[0001] The present invention relates to the technical field of fracturing wellhead equipment, and particularly to a porous injection fracturing head for fracturing wellhead equipment and a using method thereof. Background Art

[0002] In the oil field, fracturing refers to a method of forming fractures in oil and gas reservoirs by using hydraulic action during oil or gas production, also known as hydraulic fracturing; a porous injection fracturing head is a device used in the oil and gas industry, mainly used to inject liquid into the formation during fracturing. Its design usually includes multiple holes, which can make the fluid evenly distributed, thereby improving the fracturing effect. In this way, it can effectively create fractures, increase the fluidity of oil and gas, and improve the production efficiency. The advantage of the porous injection fracturing head is that it can optimize the fluid flow path, increase the injection rate, and reduce the damage to the wellbore. Ninety percent of the liquid transmitted by the fracturing head is water, and the remaining ten percent is various chemical substances.

[0003] Among them, when injecting liquid into the fracturing head through multiple water pumps and performing pressure fracturing on the underground, if natural gas leaks at the bottom at this time, the high-pressure natural gas will push the liquid to flow back, and the flowing-back liquid will cause a great impact on the water pump, resulting in damage to the water pump. In view of the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a porous injection fracturing head for fracturing wellhead equipment, including a fixing frame. A transmission pipe is fixedly connected to the bottom of the fixing frame. A receiving groove is opened at the inner wall of the transmission pipe. An arc-shaped groove one is opened at the inner wall of the transmission pipe. An arc-shaped groove two is opened at the inner wall of the transmission pipe. A water-blocking assembly is slidably connected to the inner wall of the transmission pipe;

[0005] A limiting mechanism, the limiting mechanism includes an output pipe penetrating and connected to the bottom of the transmission pipe. A plurality of water inlet pipes are penetrating and connected to the side wall of the transmission pipe. Four flow-dividing blocks one are fixedly connected to the inner wall of the transmission pipe. Three flow-dividing blocks two are fixedly connected to the inner wall of the transmission pipe. A reinforcing frame is fixedly connected to the outer wall of the transmission pipe. An insurance assembly is slidably connected to the inner wall of the output pipe. An enhancing assembly is rotatably connected to the inner wall of the flow-dividing block one. Before use, install the fixing frame at the required position and ensure that multiple pipelines are connected to the water inlet pipes. At this time, the external solution is transmitted to the inside of the transmission pipe through the water inlet pipes. During this process, the water flow inside the transmission pipe will contact the outer walls of the flow-dividing block one and the flow-dividing block two, and with Figure 4It is transmitted along the route of G in the middle, completing the state of the device conveying water flow. Moreover, when the natural gas expands, the water flow inside the output pipe will move upward along the output pipe under the thrust and then return to the inside of the transmission pipe again. At this time, the refluxed liquid will contact the first shunt block and the second shunt block again. Affected by the first shunt block, the second shunt block and the shape, the liquid will be shunted. The shunted water will flow along the outer walls of the second arc-shaped groove and the first arc-shaped groove and will be at Figure 5 The intersection occurs at points H and Y in the middle. When the two different water flows interact, most of the impact force will be offset. Through the application of the above components, the refluxed water will collide with each other inside the transmission pipe. When the water flow passes through multiple first shunt blocks and second shunt blocks, the impact force on the water pump will be effectively weakened.

[0006] Preferably, the enhancement component includes a rotating plate rotatably connected to the inner wall of the first shunt block. A telescopic plate is slidably connected to the inner wall of the rotating plate. An arc-shaped spring is fixedly connected to the bottom of the rotating plate. One ends of the two telescopic plates away from the rotating plate are rotatably connected.

[0007] Preferably, the enhancement component further includes four circular tubes fixedly connected to the inner wall of the transmission pipe. Guide plates are rotatably connected to the outer walls of the four circular tubes. One end of the arc-shaped spring away from the rotating plate is fixedly connected to the inner wall of the first shunt block. When the liquid refluxes, the impact force will act on the planes of the first shunt block and the second shunt block. When the impact force acts on the plane of the first shunt block, it will push the telescopic plate and the rotating plate to fold inward. As the telescopic plate is compressed and folded, the plane of the first shunt block changes to a depression. When the refluxed water contacts the depressed telescopic plate, it forces the water flow to make a secondary change. The water flow with the changed flow direction will impact the remaining water flow and offset part of the impact force of the remaining water flow. Through the application of the above components, when reflux occurs, multiple transverse water flows can be increased to improve the water interception effect; in addition, when the water flow inside the transmission pipe flows along the G route, at this time, the pressure of the water flow mainly acts on the arc surfaces of the first shunt block and the second shunt block. At this time, the rotating plate is in a flat state under the push of the arc-shaped spring, so that when the device is flowing in the forward direction, the influence of the first shunt block and the second shunt block on the water flow is reduced.

[0008] Preferably, the insurance component includes a first chute opened on the side wall of the output pipe. A sliding square pipe is slidably connected to the inner wall of the output pipe. A first limiting block is fixedly connected to the inner wall of the sliding square pipe. When water passes through the inside of the transmission pipe, a large impact force will be formed between the first shunt block and the second arc-shaped groove. When the water flow contacts the outer wall of the circular pipe, the water flow will be divided into two shunts after bypassing the circular pipe. Since the two shunts will never be completely symmetrical up and down at any time, during the operation of the equipment, there must be one side with high pressure and the other side with low pressure. The side with high pressure will move towards the side with low pressure, eventually causing the water flow to swing irregularly. The force of this swing will drive the guide plate to swing synchronously. During the swing of the guide plate, the sand and stones inside the second arc-shaped groove will be pushed. Through the application of the above components, it is avoided that the fine sand in the liquid precipitates inside the transmission pipe due to the influence of the first arc-shaped groove and the second arc-shaped groove, causing sediment to block the transmission pipe and affecting the imbalance of the internal components of the liquid.

[0009] Preferably, the insurance component further includes a rotating column rotatably connected to the inner wall of the sliding square pipe. A water-blocking block is fixedly connected to the side wall of the rotating column. The bottom of the output pipe is connected with a water outlet pipe in a penetrating manner.

[0010] Preferably, the insurance component further includes a spiral spring fixedly connected to the inner wall of the rotating column. One end of the spiral spring away from the rotating column is fixedly connected to the inner wall of the sliding square pipe. A pushing frame is fixedly connected to the side wall of the sliding square pipe. The outer wall of the pushing frame is slidably connected to the inner wall of the first chute. A telescopic rod is fixedly connected to the top of the pushing frame. The end of the telescopic rod away from the pushing frame is fixedly connected to the bottom of the transmission pipe.

[0011] Preferably, the water-blocking component includes a second chute opened on the inner wall of the transmission pipe. A second limiting block is fixedly connected to the inner wall of the second chute. A sliding block is slidably connected to the inner wall of the second chute. A pushing rod is fixedly connected to the bottom of the sliding block. The end of the pushing rod away from the sliding block is fixedly connected to the top of the pushing frame. When the above-mentioned liquid flows back, it will pass through the output pipe along the Figure 5 path of F in the figure. At this time, the upward liquid will first contact the bottom of the water-blocking block, forcing the water-blocking block to tilt upward with the spiral spring as the center, presenting a state as shown in Figure 10 the figure. The tilted-up water-blocking block will contact the bottom of the first limiting block. The upward flowing water will push the water-blocking block and the sliding square pipe to move upward along the inner wall of the output pipe. At the same time, the sliding square pipe drives the pushing rod and the sliding block to slide upward along the inner wall of the second chute through the pushing frame, so that the sliding block blocks the receiving groove and prevents the backflowing water from reaching the inside of the water inlet pipe through the receiving groove; in addition, when the sliding square pipe moves upward, the sliding square pipe and the first chute will be misaligned, so that the excess water flow can be sprayed out through the first chute, reducing the pressure on the equipment components when the water flows back.

[0012] A usage method of a porous injection fracturing head for a fracturing wellhead device includes the following steps:

[0013] S1: Before use, install the fixing frame at the required position and ensure that multiple pipes are connected to the water inlet pipe. At this time, the external solution is transmitted into the transmission pipe through the water inlet pipe.

[0014] S2: The water flow inside the transmission pipe will contact the outer walls of the first shunt block and the second shunt block. When the natural gas expands, the water flow inside the output pipe will move upward along the output pipe under the thrust and return to the inside of the transmission pipe again.

[0015] S3: The refluxed liquid will contact the first shunt block and the second shunt block again. Affected by the first shunt block, the second shunt block and the outer shape, the liquid will be shunted. The shunted water will flow along the outer walls of the second arc-shaped groove and the first arc-shaped groove. When the two different water flows interact, most of the impact force will be offset.

[0016] The present invention has the following beneficial effects:

[0017] (1) Aiming at the problem that natural gas pushes the liquid to flow back during the fracturing process, which causes damage to the water pump, a fixing frame and a limiting mechanism are provided inside the device. Before use, install the fixing frame at the required position and ensure that multiple pipes are connected to the water inlet pipe. At this time, the external solution is transmitted into the transmission pipe through the water inlet pipe. During this process, the water flow inside the transmission pipe will contact the outer walls of the first shunt block and the second shunt block and is transmitted along the Figure 4 route G in the figure to complete the state of the device transporting water flow. Moreover, when the natural gas expands, the water flow inside the output pipe will move upward along the output pipe under the thrust and return to the inside of the transmission pipe again. At this time, the refluxed liquid will contact the first shunt block and the second shunt block again. Affected by the first shunt block, the second shunt block and the outer shape, the liquid will be shunted. The shunted water will flow along the outer walls of the second arc-shaped groove and the first arc-shaped groove and converge at points H and Y in the Figure 5 figure. When the two different water flows interact, most of the impact force will be offset. Through the application of the above components, the refluxed water collides with each other inside the transmission pipe, and when the water flow passes through multiple first shunt blocks and second shunt blocks, the impact on the water pump by the impact force will be effectively weakened.

[0018] (2) When the liquid in the present invention flows back, the impact force acts on the planes of the first flow dividing block and the second flow dividing block. When the impact force acts on the plane of the first flow dividing block, it will push the telescopic plate and the rotating plate to fold inward. As the telescopic plate is compressed and folded, the plane of the first flow dividing block transforms into a depression. When the backflowing water contacts the depressed telescopic plate, it forces the water flow to undergo a secondary transformation, and the transformed water flow impacts the remaining water flow, offsetting part of the impact force of the remaining water flow. Through the application of the above components, when a backflow occurs, multiple transverse water flows can be increased, improving the water interception effect; in addition, when the water flow inside the transmission pipe flows along route G, at this time, the pressure of the water flow mainly acts on the arc surfaces of the first flow dividing block and the second flow dividing block. At this time, the rotating plate is pushed by the arc-shaped spring and presents a flat state, reducing the influence of the first flow dividing block and the second flow dividing block on the water flow when the device is flowing downstream.

[0019] (3) When the water in the present invention passes through the inside of the transmission pipe, a large impact force will be formed between the first flow dividing block and the second arc-shaped groove. When the water flow contacts the outer wall of the circular pipe, the water flow will be divided into two split flows after bypassing the circular pipe. Since the two split flows will never be completely symmetrical up and down at any time, during the operation of the device, there must be one side with a higher pressure and the other side with a lower pressure. The side with the higher pressure will move towards the side with the lower pressure, ultimately causing the water flow to swing irregularly. The swinging force will drive the guide plate to swing synchronously. During the swinging process of the guide plate, the sand and stones inside the second arc-shaped groove will be pushed. Through the application of the above components, it is avoided that the fine sand in the liquid precipitates inside the transmission pipe due to the influence of the first arc-shaped groove and the second arc-shaped groove, resulting in sediment blockage of the transmission pipe and affecting the imbalance of the internal components of the liquid.

[0020] When the liquid in the present invention flows back, it will Figure 5 pass through the output pipe along the path F in the figure. At this time, the upward liquid will first contact the bottom of the water blocking block, forcing the water blocking block to tilt upward with the spiral spring as the center, presenting a state as shown in Figure 10 the figure. The upward-tilted water blocking block will contact the bottom of the first limiting block, and the upward-flowing water will push the water blocking block and the sliding square pipe to move upward along the inner wall of the output pipe. At the same time, the sliding square pipe drives the push rod and the sliding block to slide upward along the inner wall of the second chute through the push frame, so that the sliding block blocks the receiving groove, preventing the backflowing water from reaching the inside of the water inlet pipe through the receiving groove; in addition, when the sliding square pipe moves upward, the sliding square pipe and the first chute will be misaligned, allowing the excess water flow to spray out through the first chute, reducing the pressure on the device components when the water flows back. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 2 Schematic diagram of the overall structure of the present invention;

[0024] Figure 3 Schematic cross-sectional view of the limiting mechanism of the present invention;

[0025] Figure 4 Schematic diagram of the downstream cross-section of the transmission pipe of the present invention;

[0026] Figure 5 Schematic diagram of the upstream cross-section of the transmission pipe of the present invention;

[0027] Figure 6 Schematic diagram of the internal components of the limiting mechanism of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of A in;

[0029] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of B in;

[0030] Figure 9 Schematic cross-sectional view of the insurance component of the present invention;

[0031] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of C in;

[0032] Figure 11 For the present invention Figure 9 Enlarged schematic diagram of D in;

[0033] Figure 12 Schematic diagram of the working process of the present invention.

[0034] In the drawings, the list of components represented by each reference numeral is as follows:

[0035] In the figure: 1. Fixed frame; 11. Transmission pipe; 12. Accommodating groove; 13. First arc groove; 14. Second arc groove; 2. Limiting mechanism; 21. Output pipe; 22. Water inlet pipe; 23. First flow dividing block; 24. Second flow dividing block; 25. Reinforcing frame; 3. Enhancement component; 31. Rotating plate; 32. Telescopic plate; 33. Arc spring; 34. Round pipe; 35. Guide plate; 41. First chute; 42. Sliding square pipe; 43. First limiting block; 44. Rotating column; 45. Water blocking block; 46. Water outlet pipe; 47. Spiral spring; 48. Pushing frame; 49. Telescopic rod; 5. Water blocking component; 51. Second chute; 52. Second limiting block; 53. Sliding block; 54. Pushing rod. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Example 1, please refer to Figure 1 - Figure 5 , the present invention is a porous injection fracturing head for a fracturing wellhead device, including a fixed frame 1. A transmission pipe 11 is fixedly connected to the bottom of the fixed frame 1. An accommodating groove 12 is opened at the inner wall of the transmission pipe 11. A first arc groove 13 is opened at the inner wall of the transmission pipe 11. A second arc groove 14 is opened at the inner wall of the transmission pipe 11. A water blocking component 5 is slidably connected to the inner wall of the transmission pipe 11;

[0038] A limiting mechanism 2, the limiting mechanism 2 includes an output pipe 21 that is connected through the bottom of the transmission pipe 11. A plurality of water inlet pipes 22 are connected through the side wall of the transmission pipe 11. Four first flow dividing blocks 23 are fixedly connected to the inner wall of the transmission pipe 11. Three second flow dividing blocks 24 are fixedly connected to the inner wall of the transmission pipe 11. A reinforcing frame 25 is fixedly connected to the outer wall of the transmission pipe 11. An insurance component is slidably connected to the inner wall of the output pipe 21. An enhancement component 3 is rotatably connected to the inner wall of the first flow dividing block 23. Before use, the fixed frame 1 is installed at the required position, and it is ensured that multiple pipes are connected to the water inlet pipes 22. At this time, the external solution is transmitted to the inside of the transmission pipe 11 through the water inlet pipes 22. During this process, the water flow inside the transmission pipe 11 will contact the outer walls of the first flow dividing block 23 and the second flow dividing block 24, and Figure 4It is transmitted along the route of G in the figure, completing the state of the device for conveying water flow. Moreover, when the natural gas expands, the water flow inside the output pipe 21 will move upward along the output pipe 21 under the thrust and return to the inside of the transmission pipe 11 again. At this time, the refluxed liquid will contact the first flow dividing block 23 and the second flow dividing block 24 again. Affected by the first flow dividing block 23, the second flow dividing block 24 and the outer shape, the liquid will be divided. The divided water will flow along the outer walls of the second arc-shaped groove 14 and the first arc-shaped groove 13, and at Figure 5 At the intersection of H and Y points in the figure, when two different water flows interact, most of the impact force will be offset. Through the application of the above components, the refluxed water will collide with each other inside the transmission pipe 11. When the water flow passes through multiple first flow dividing blocks 23 and second flow dividing blocks 24, the impact force on the water pump will be effectively weakened.

[0039] Embodiment 2. Please refer to Figure 6 - Figure 12 In this invention, it is a porous injection fracturing head for a fracturing wellhead device. On the basis of Embodiment 1, the enhancement component 3 includes a rotating plate 31 rotatably connected to the inner wall of the first flow dividing block 23. A telescopic plate 32 is slidably connected to the inner wall of the rotating plate 31. An arc-shaped spring 33 is fixedly connected to the bottom of the rotating plate 31. One ends of the two telescopic plates 32 away from the rotating plate 31 are rotatably connected.

[0040] The enhancement component 3 further includes four circular tubes 34 fixedly connected to the inner wall of the transmission pipe 11. A guiding plate 35 is rotatably connected to the outer walls of the four circular tubes 34. One end of the arc-shaped spring 33 away from the rotating plate 31 is fixedly connected to the inner wall of the first flow dividing block 23. When the liquid refluxes, the impact force will act on the planes of the first flow dividing block 23 and the second flow dividing block 24. When this impact force acts on the plane of the first flow dividing block 23, it will push the telescopic plate 32 and the rotating plate 31 to fold inward. As the telescopic plate 32 is compressed and folded, the plane of the first flow dividing block 23 changes to a depression. When the refluxed water contacts the depressed telescopic plate 32, it forces the water flow to undergo a secondary change. The water flow with the changed flow direction will impact the remaining water flow and offset part of the impact force of the remaining water flow. Through the application of the above components, when reflux occurs, multiple transverse water flows can be increased, improving the interception effect on water; in addition, when the water flow inside the transmission pipe 11 flows along the G route, at this time, the pressure of the water flow mainly acts on the arc surfaces of the first flow dividing block 23 and the second flow dividing block 24. At this time, the rotating plate 31 is pushed by the arc-shaped spring 33 to present a flat state, so that when the device is flowing in the forward direction, the influence of the first flow dividing block 23 and the second flow dividing block 24 on the water flow is reduced.

[0041] The insurance component includes a first chute 41 opened on the side wall of the output pipe 21. A sliding square pipe 42 is slidably connected to the inner wall of the output pipe 21. A first limiting block 43 is fixedly connected to the inner wall of the sliding square pipe 42. When water passes through the inside of the transmission pipe 11, a large impact force will be formed between the first shunt block 23 and the second arc-shaped groove 14. When the water flow contacts the outer wall of the circular pipe 34, the water flow will be divided into two shunts after bypassing the circular pipe 34. Since the two shunts will not be completely symmetrical up and down at any time, during the operation of the device, there must be one side with high pressure and the other side with low pressure. The side with high pressure will move towards the side with low pressure, ultimately causing the water flow to swing irregularly. The force of this swing will drive the guide plate 35 to swing synchronously. During the swinging process of the guide plate 35, the sand and gravel inside the second arc-shaped groove 14 will be pushed. Through the application of the above components, it is avoided that the fine sand in the liquid precipitates inside the transmission pipe 11 due to the influence of the first arc-shaped groove 13 and the second arc-shaped groove 14, resulting in sediment blockage of the transmission pipe 11 and affecting the imbalance of the internal components of the liquid.

[0042] The insurance component further includes a rotating column 44 rotatably connected to the inner wall of the sliding square pipe 42. A water-blocking block 45 is fixedly connected to the side wall of the rotating column 44. The bottom of the output pipe 21 is connected to a water outlet pipe 46 in a penetrating manner.

[0043] The insurance component further includes a spiral spring 47 fixedly connected to the inner wall of the rotating column 44. One end of the spiral spring 47 away from the rotating column 44 is fixedly connected to the inner wall of the sliding square pipe 42. A pushing frame 48 is fixedly connected to the side wall of the sliding square pipe 42. The outer wall of the pushing frame 48 is slidably connected to the inner wall of the first chute 41. A telescopic rod 49 is fixedly connected to the top of the pushing frame 48. The end of the telescopic rod 49 away from the pushing frame 48 is fixedly connected to the bottom of the transmission pipe 11.

[0044] The water-blocking component 5 includes a second chute 51 opened on the inner wall of the transmission pipe 11. A second limiting block 52 is fixedly connected to the inner wall of the second chute 51. A sliding block 53 is slidably connected to the inner wall of the second chute 51. A pushing rod 54 is fixedly connected to the bottom of the sliding block 53. The end of the pushing rod 54 away from the sliding block 53 is fixedly connected to the top of the pushing frame 48. When the above-mentioned liquid flows back, it will pass through the output pipe 21 along the path of F, and at this time, the upward liquid will first contact the bottom of the water-blocking block 45, forcing the water-blocking block 45 to tilt upward with the spiral spring 47 as the center, presenting as Figure 5 in F, and at this time, the upward liquid will first contact the bottom of the water-blocking block 45, forcing the water-blocking block 45 to tilt upward with the spiral spring 47 as the center, presenting as Figure 10In the state shown, the water-blocking block 45 that tilts upward will contact the bottom of the first limiting block 43, and the upward-flowing water will push the water-blocking block 45 and the sliding square pipe 42 to move upward along the inner wall of the output pipe 21. At the same time, the sliding square pipe 42 drives the push rod 54 and the sliding block 53 to slide upward along the inner wall of the second chute 51 through the push frame 48, so that the sliding block 53 blocks the receiving groove 12 and prevents the backflow water from reaching the inside of the water inlet pipe 22 through the receiving groove 12. In addition, when the sliding square pipe 42 moves upward, the sliding square pipe 42 and the first chute 41 will be misaligned, so that the excess water flow can be ejected outward through the first chute 41, reducing the pressure on the equipment components when the water flows backward.

[0045] The usage method of this fracturing head device includes the following steps:

[0046] S1: Before use, install the fixing frame 1 at the required position and ensure that multiple pipes are connected to the water inlet pipe 22. At this time, the external solution is transmitted to the inside of the transmission pipe 11 through the water inlet pipe 22.

[0047] S2: The water flow inside the transmission pipe 11 will contact the outer walls of the first flow-dividing block 23 and the second flow-dividing block 24. When the natural gas expands, the water flow inside the output pipe 21 will move upward along the output pipe 21 under the thrust and return to the inside of the transmission pipe 11 again.

[0048] S3: The refluxing liquid will contact the first flow-dividing block 23 and the second flow-dividing block 24 again. Affected by the first flow-dividing block 23, the second flow-dividing block 24 and the shape, the liquid will be divided. The divided water will flow along the outer walls of the second arc-shaped groove 14 and the first arc-shaped groove 13. When the two different water flows interact, most of the impact force will be offset.

[0049] A specific application of this embodiment is: Before use, install the fixing frame 1 at the required position and ensure that multiple pipes are connected to the water inlet pipe 22. At this time, the external solution is transmitted to the inside of the transmission pipe 11 through the water inlet pipe 22. During this process, the water flow inside the transmission pipe 11 will contact the outer walls of the first flow-dividing block 23 and the second flow-dividing block 24 and is transmitted along the Figure 4 route G in the figure to complete the state of the equipment transporting water flow. Moreover, when the natural gas expands, the water flow inside the output pipe 21 will move upward along the output pipe 21 under the thrust and return to the inside of the transmission pipe 11 again. At this time, the refluxing liquid will contact the first flow-dividing block 23 and the second flow-dividing block 24 again. Affected by the first flow-dividing block 23, the second flow-dividing block 24 and the shape, the liquid will be divided. The divided water will flow along the outer walls of the second arc-shaped groove 14 and the first arc-shaped groove 13 and at Figure 5When H and Y points meet and two different water flows interact, most of the impact force will be offset. Through the application of the above components, the water flowing back will collide with each other inside the transmission pipe 11. When the water flow passes through the plurality of first diversion blocks 23 and second diversion blocks 24, the impact force on the water pump will be effectively weakened.

[0050] When the liquid flows back, the impact force will act on the planes of the first diversion block 23 and the second diversion block 24. When the impact force acts on the plane of the first diversion block 23, it will push the telescopic plate 32 and the rotating plate 31 to fold inward. As the telescopic plate 32 is compressed and folded, the plane of the first diversion block 23 changes to a depression. When the flowing-back water contacts the depressed telescopic plate 32, it forces the water flow to make a secondary change, and the water flow with the changed direction will impact the remaining water flow and offset part of the impact force of the remaining water flow. Through the application of the above components, when the reverse flow occurs, multiple lateral water flows can be increased to improve the water interception effect; in addition, when the water flow inside the transmission pipe 11 flows along the G route, at this time, the pressure of the water flow acts more on the arc surfaces of the first diversion block 23 and the second diversion block 24. At this time, the rotating plate 31 is pushed by the arc spring 33 to present a flat state, so that when the device is flowing forward, the influence of the first diversion block 23 and the second diversion block 24 on the water flow is reduced.

[0051] When the water passes through the inside of the transmission pipe 11, a large impact force will be formed between the first diversion block 23 and the second arc-shaped groove 14. When the water flow contacts the outer wall of the round pipe 34, the water flow will be divided into two diversion flows after bypassing the round pipe 34. Since the two flows will not be completely symmetric up and down at any time, during the operation of the device, there must be one side with a higher pressure and the other side with a lower pressure. The side with the higher pressure will move towards the side with the lower pressure, eventually causing the water flow to swing irregularly. The swinging force will drive the guide plate 35 to swing synchronously. During the swinging process of the guide plate 35, the sand and stones inside the second arc-shaped groove 14 will be pushed. Through the application of the above components, it is possible to prevent the fine sand in the liquid from precipitating inside the transmission pipe 11 due to the influence of the first arc-shaped groove 13 and the second arc-shaped groove 14, resulting in sediment clogging the transmission pipe 11 and affecting the imbalance of the internal components of the liquid. When the above liquid flows back, it will Figure 5 pass through the output pipe 21 along the path of F in the middle. At this time, the upward liquid will first contact the bottom of the water-blocking block 45, forcing the water-blocking block 45 to tilt upward with the spiral spring 47 as the center, presenting as Figure 10In the state shown, the water-blocking block 45 that tilts upward will contact the bottom of the first limiting block 43, and the upward-flowing water will push the water-blocking block 45 and the sliding square pipe 42 to move upward along the inner wall of the output pipe 21. At the same time, the sliding square pipe 42 drives the push rod 54 and the sliding block 53 to slide upward along the inner wall of the second chute 51 through the push frame 48, so that the sliding block 53 blocks the receiving groove 12 and prevents the backflow water from reaching the inside of the water inlet pipe 22 through the receiving groove 12; in addition, when the sliding square pipe 42 moves upward, the sliding square pipe 42 and the first chute 41 will be misaligned, so that the excess water flow can be ejected outward through the first chute 41, reducing the pressure on the equipment components during water backflow.

[0052] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A porous injection fracturing head for a fracturing wellhead device, a fixing frame (1), the bottom of the fixing frame (1) is fixedly connected with a transmission pipe (11), a receiving groove (12) is opened at the inner wall of the transmission pipe (11), an arc-shaped groove one (13) is opened at the inner wall of the transmission pipe (11), an arc-shaped groove two (14) is opened at the inner wall of the transmission pipe (11), and a water-blocking component (5) is slidably connected to the inner wall of the transmission pipe (11), characterized in that, It further includes: A limiting mechanism (2), the limiting mechanism (2) includes an output pipe (21) penetratingly connected to the bottom of the transmission pipe (11), several water inlet pipes (22) are penetratingly connected to the side wall of the transmission pipe (11), four first flow dividing blocks (23) are fixedly connected to the inner wall of the transmission pipe (11), three second flow dividing blocks (24) are fixedly connected to the inner wall of the transmission pipe (11), a reinforcing frame (25) is fixedly connected to the outer wall of the transmission pipe (11), a safety component is slidably connected to the inner wall of the output pipe (21), and a strengthening component (3) is rotatably connected to the inner wall of the first flow dividing block (23); The strengthening component (3) includes a rotating plate (31) rotatably connected to the inner wall of the first flow dividing block (23), a telescopic plate (32) is slidably connected to the inner wall of the rotating plate (31), an arc spring (33) is fixedly connected to the bottom of the rotating plate (31), and one ends of the two telescopic plates (32) away from the rotating plate (31) are rotatably connected; The strengthening component (3) further includes four circular pipes (34) fixedly connected to the inner wall of the transmission pipe (11), a guiding plate (35) is rotatably connected to the outer walls of the four circular pipes (34), and one end of the arc spring (33) away from the rotating plate (31) is fixedly connected to the inner wall of the first flow dividing block (23).

2. The porous injection fracturing head for a fracturing wellhead device according to claim 1, characterized in that: The safety component includes a first chute (41) opened on the side wall of the output pipe (21), a sliding square pipe (42) is slidably connected to the inner wall of the output pipe (21), and a first limiting block (43) is fixedly connected to the inner wall of the sliding square pipe (42).

3. The porous injection fracturing head for a fracturing wellhead device according to claim 2, wherein: The safety component further includes a rotating column (44) rotatably connected to the inner wall of the sliding square pipe (42), a water blocking block (45) is fixedly connected to the side wall of the rotating column (44), and a water outlet pipe (46) is penetratingly connected to the bottom of the output pipe (21).

4. A porous injection fracturing head for a fracturing wellhead device according to claim 3, characterized in that: The safety component further includes a spiral spring (47) fixedly connected to the inner wall of the rotating column (44), one end of the spiral spring (47) away from the rotating column (44) is fixedly connected to the inner wall of the sliding square pipe (42), a pushing frame (48) is fixedly connected to the side wall of the sliding square pipe (42), the outer wall of the pushing frame (48) is slidably connected to the inner wall of the first chute (41), a telescopic rod (49) is fixedly connected to the top of the pushing frame (48), and one end of the telescopic rod (49) away from the pushing frame (48) is fixedly connected to the bottom of the transmission pipe (11).

5. A porous injection fracturing head for a fracturing wellhead device according to claim 4, characterized in that: The water blocking component (5) includes a second chute (51) opened on the inner wall of the transmission pipe (11), a second limiting block (52) is fixedly connected to the inner wall of the second chute (51), a sliding block (53) is slidably connected to the inner wall of the second chute (51), a pushing rod (54) is fixedly connected to the bottom of the sliding block (53), and one end of the pushing rod (54) away from the sliding block (53) is fixedly connected to the top of the pushing frame (48).

6. A method for using a porous injection fracturing head for a fracturing wellhead device, which uses the device of the porous injection fracturing head for a fracturing wellhead as described in claim 5, and is characterized in that: It includes the following steps, S1: Before use, install the fixing frame (1) at the required position and ensure that multiple pipes are connected to the water inlet pipe (22). At this time, the external solution is transmitted into the transmission pipe (11) through the water inlet pipe (22). S2: The water flow inside the transmission pipe (11) will contact the outer walls of the first flow dividing block (23) and the second flow dividing block (24). When the natural gas expands, the water flow inside the output pipe (21) will move upward along the output pipe (21) under the thrust and then return to the inside of the transmission pipe (11) again. S3: The refluxed liquid will contact the first flow dividing block (23) and the second flow dividing block (24) again. Affected by the first flow dividing block (23), the second flow dividing block (24) and the outer shape, the liquid will be divided. The divided water will flow along the outer walls of the second arc-shaped groove (14) and the first arc-shaped groove (13). When the two different water flows interact, most of the impact force will be offset.

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