Heavy oil thermal recovery well cementing material production and preparation equipment and method

Abstract

The present invention discloses a production and preparation device and method for cementing materials for heavy oil thermal recovery wells, which belongs to the technical field of cementing composite material production, including a cyclone, an exhaust pipe, a feed pipe, a mixed flow pipe, and also includes: a feed box, which is fixedly connected to the outside of the mixed flow pipe, and the inner side of the feed box is provided with a feed cavity, the inner side of the feed cavity is rotatably connected with a feed wheel, and the surface blade shape of the feed wheel is arc-shaped. Through the mutual cooperation between the feed wheel and the auxiliary unloading mechanism, the lime raw material at the bottom of the feed pipe can be driven to vibrate in the process of entering the feed box from the feed pipe to accelerate its downward flow speed, and reduce the gap between adjacent lime raw material particles, so that the feeding amount of the feed wheel each time the feed is rotated is larger and can be continuously and evenly carried out, which is conducive to the preheating of the lime raw material.

Description

Technical Field

[0001] The invention relates to the technical field of cementing composite material production, in particular to equipment and a method for producing cementing materials for heavy oil thermal recovery wells. Background Art

[0002] Heavy oil thermal recovery is a method of oil extraction, which reduces the viscosity of heavy oil by heating the oil layer to facilitate the extraction of heavy oil. However, the heavy oil thermal recovery method has high requirements for cementing, requiring the wellbore and wellhead to have good resistance to high temperature and high pressure, so it is necessary to strictly screen the cementing materials. The current cementing material is a gelling material made of oil well cement mixed with other admixtures. It mainly uses high-quality silica sand as the raw material, which has a high silicon content and a low aluminum content. It is now obtained by mixing and grinding limestone, coal gangue, fly ash, sulfuric acid slag, etc. according to the weight ratio, and then preheating and decomposing them, and then melting and cooling them, and finally mixing and grinding them with gypsum, and its high temperature and high pressure resistance can be effectively improved.

[0003] Preheating and decomposition is an integral part of the oil well cement production process. During the preheating process, the cyclone preheater fully utilizes the hot air flow discharged from the rotary kiln and the decomposition furnace to preheat and decompose the lime raw material. When the ground lime raw material enters the mixing pipe from the feeding pipe, the lime raw material falls completely by its own weight, which makes the feeding process of the lime raw material discontinuous and uneven. At the same time, when the lime raw material is fed into the feeding pipe, some of the lime raw material may be agglomerated, which is easy to cause blockage at the bottom of the feeding pipe. In addition, the dispersion of the lime raw material entering the mixing pipe is poor, which makes the heat exchange effect of the raw material poor.

[0004] The existing authorized Chinese invention patent with application number 202010974087.8 is a cyclone preheater for a cement predecomposition kiln, which improves the uniformity of feeding the lime raw material by setting a feeding wheel at the bottom of the feeding pipe. However, when the lime raw material is blocked at the bottom port of the feeding pipe, uneven feeding and poor continuity will still occur. In addition, in this application, the power of the rising air flow is utilized to provide power for the rotation of the feeding wheel. However, multiple wind cavities are set to divert the flow to drive the annular wind wheel to rotate, so that the hot air flow will exchange heat with multiple wall surfaces during the rising process, which will cause a certain amount of heat waste. Summary of the invention

[0005] The object of the present invention is to provide a production and preparation device and method for cementing materials for heavy oil thermal recovery wells, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a production and preparation equipment for cementing materials for heavy oil thermal recovery wells, comprising a cyclone, an exhaust pipe, a feed pipe, a mixing pipe, and also comprising:

[0007] A feed box is fixedly connected to the outside of the mixing tube, and a feed cavity is opened on the inner side of the feed box, a feed wheel is rotatably connected to the inner side of the feed cavity, and the blade shape of the surface of the feed wheel is arc-shaped;

[0008] An air guide plate, which is fixedly connected to the inner wall of the mixing tube, and an impact block is fixedly connected to the outer surface of the air guide plate, and the number of the impact blocks is at least six, and a flow channel is formed between adjacent impact blocks;

[0009] An auxiliary discharge mechanism, which is arranged on the top of the feed box and is used to assist in discharging the cement raw material in the feed pipe;

[0010] Among them, the auxiliary unloading mechanism includes a protective box fixedly installed on the top of the feed box, the inner side surface of the protective box is rotatably connected to a rotating wheel coaxially fixedly connected to the feeding wheel, the top surface of the rotating wheel is fixedly connected to a protrusion, the inner side surface of the protective box is slidably connected to a T-bar, the surface of the T-bar is provided with a sliding groove, the inner side surface of the protective box is slidably connected to a striking block, an extrusion spring is fixedly connected between the striking block and the inner wall of the protective box, the inner side surface of the protective box is slidably connected to a magnetic block, a traction rope is fixedly connected between the magnetic block and the striking block, and the outer surface of the striking block is fixedly connected to a rubber pad.

[0011] The energy-saving transmission mechanism is arranged inside the mixing pipe and is used to provide power to the feeding wheel.

[0012] As a further solution of the present invention: wherein the feeding chamber is connected to the mixing pipe, and the shape and size of the feeding chamber are matched with the feeding wheel, that is, the blade surface of the feeding wheel is in a sliding connection with the inner wall of the feeding chamber, so that the feeding of the feeding wheel is more efficient, and it can prevent the material from remaining between the feeding wheel and the feeding chamber and being unable to be fully discharged; the shape of the air guide plate is an arc surface, which can greatly reduce the impact force when the highly flowing hot air flow contacts the surface of the air guide plate, so that the service life of the air guide plate can be effectively extended. And the position and size of the air guide plate are matched with the discharge port of the feeding chamber, so that the air guide plate can guide the airflow well, making it difficult for it to enter the interior of the feeding chamber and cause the cement raw material to flow in the opposite direction, and at the same time, it can also play a guiding role for the spilled cement raw material.

[0013] As a further solution of the present invention: wherein, all the impact blocks are equidistantly distributed on the surface of the air guide plate along a straight line, and the positions and distribution specifications are matched with the discharge port of the feeding chamber, and the impact blocks are in the shape of a flat terrace, which can disperse and discharge the cement raw meal delivered by the feeding wheel, so that the cement raw meal can contact the hot air flow in the mixing tube in a more dispersed manner, so that under the impact of the hot air flow, the cement raw meal becomes more dispersed, which is conducive to better heat exchange preheating of the cement raw meal.

[0014] As a further solution of the present invention: wherein, the protrusion is slidably connected to the inner side surface of the slide groove, the T-bar is made of metal iron material and its position corresponds to the magnetic block, the rubber pad is in contact with the outer wall of the feeding tube, that is, the rubber pad will move and separate from the feeding tube when it is subjected to a force away from the feeding tube. By setting the rubber pad, the generation of noise can be effectively reduced, so that the degree of noise pollution is low, and a fine groove is provided on the inner side surface of the protective box, and the two ends of the traction rope are respectively passed through the fine groove and fixedly connected to the striking block and the magnetic block, so that the traction rope can be smoothly transmitted, that is, when one end thereof is subjected to traction, the other end thereof can transmit the traction force, so that the structure at the other end can move.

[0015] As a further solution of the present invention: wherein, the energy-saving transmission mechanism includes a receiving chamber and a transmission chamber opened inside the mixing tube, the inner side surface of the receiving chamber is rotatably connected to a wind wheel, the inner side surfaces of the receiving chamber and the transmission chamber are respectively rotatably connected to two sprockets, a chain is transmission-connected between the two sprockets, the inner side surface of the transmission chamber is rotatably connected to a first bevel gear and a second bevel gear, and the inner side surface of the mixing tube is fixedly connected to a wind collecting hood. By using the energy-saving transmission mechanism, the heat waste of the hot air flow inside the mixing tube can be effectively avoided, and the flow force of the hot air flow can be used to provide power for the feeding wheel and the rotating wheel, thereby effectively saving resources.

[0016] As a further solution of the present invention: wherein, the sprocket inside the accommodating chamber is coaxially fixedly connected to the wind wheel, the sprocket inside the transmission chamber is coaxially fixedly connected to the first bevel gear, and the second bevel gear is coaxially fixedly connected to the feeding wheel, so that the rotation of the wind wheel can drive the feeding wheel and the rotating wheel to rotate synchronously, so that the feeding wheel and the rotating wheel do not need to be powered by an additional power source, thereby effectively saving resources; a chain groove is provided between the accommodating chamber and the transmission chamber, and the chain passes through the chain groove, so that the normal transmission work of the chain will not be hindered.

[0017] As a further scheme of the present invention: wherein, the wind collecting hood includes an wind collecting part and an air guiding part, the air guiding part is inclined in design, and can guide and converge the hot air flow well, but the relative movement resistance between the wind collecting hood and the hot air flow is small, so that the service life of the wind collecting hood can be extended, and an air collecting cavity is formed between the wind collecting part and the inner wall of the mixing tube, and an air exhaust groove is formed between the air guiding part and the inner wall of the mixing tube, and the top end of the air exhaust groove is located below the connecting port of the accommodating cavity, and the wind collecting part is vertically designed, so the hot air flow inside the vertical groove body of the exhaust groove will remain in a vertical state and flow upward during flow, so that when it contacts the wind wheel, it will apply a vertical upward thrust to the wind wheel, so that the wind wheel can rotate better.

[0018] As a further solution of the present invention: wherein, the upper blades of the wind wheel extend through the accommodating cavity to the interior of the mixing duct, and the shape and size of the accommodating cavity match the wind wheel, so that the upward hot air flow in the mixing duct can drive the wind wheel to rotate well under the guidance of the wind collecting hood.

[0019] A method for producing cementing materials for heavy oil thermal recovery wells comprises the following steps:

[0020] a. Feed the material into the feed box through the feeding pipe, and discharge the falling cement raw material into the mixing pipe through the feeding wheel;

[0021] b. The impact block collides with the fast-moving cement raw material, and discharges the cement raw material into the mixing pipe through the flow channel;

[0022] c. The hot air flow sent in through the exhaust pipe is used to entrain and transport the spilled cement raw meal and preheat it;

[0023] d. The cement raw material is preheated in multiple stages through multiple cyclones.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells can accelerate the downward flow of lime raw material by driving the lime raw material at the bottom of the feeding pipe to vibrate during the process of entering the feeding box from the feeding pipe through the cooperation between the feeding wheel and the auxiliary feeding mechanism, and reduce the gap between adjacent lime raw material particles, so that the feeding amount of the feeding wheel is larger each time when feeding and the feeding can be continuously and evenly carried out, which is conducive to the preheating of the lime raw material.

[0026] 2. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells can impact and disperse the lime raw material in the process of entering the mixing pipe from the feeding chamber through the cooperation of the air guide plate and the impact block. Therefore, under the cooperation of the flow channel, the dispersion of the material when entering the mixing pipe is higher, and under the impact of the upward high-speed airflow, the heat exchange efficiency between the high-temperature airflow and the fully dispersed lime raw material is better, thereby making the heat exchange preheating effect of the lime raw material better.

[0027] 3. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells can effectively avoid the waste of heat from the hot air flow inside the mixing pipe by using an energy-saving transmission mechanism, and provide power for the feed wheel and the rotating wheel through the flow force of the hot air flow, thereby effectively saving resources.

[0028] 4. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells can guide the upstream hot air flow in the mixed flow pipe through the mutual cooperation between the air collecting part, the air guiding part, the air collecting cavity and the air exhaust slot, so that the wind wheel can continue to rotate stably at a high speed, thereby ensuring the stable supply of power to the runner and the feeding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the coordination structure of the cyclone tube of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the mixing tube of the present invention;

[0031] Figure 3 For the present invention Figure 2 Schematic diagram of local structural connection structure;

[0032] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0033] Figure 5 is a cross-sectional view of the mixed flow tube of the present invention;

[0034] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0035] Figure 7 This is a schematic diagram of the internal structure of the feed box of the present invention;

[0036] Figure 8 This is a schematic diagram of the internal structure of the protection box of the present invention;

[0037] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0038] Fig.10 For the present invention Figure 8 The enlarged structural diagram at D in the middle;

[0039] Fig.11 It is a cross-sectional view of the protective box of the present invention.

[0040] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0041] 1. Cyclone; 2. Exhaust pipe; 3. Feed pipe; 4. Mixing pipe; 5. Feed box; 6. Feed cavity; 7. Feed wheel; 8. Air guide plate; 9. Impact block; 10. Flow channel; 11. Auxiliary unloading mechanism; 111. Protection box; 112. Rotating wheel; 113. Bump; 114. T-bar; 115. Slide; 116. Impact block; 117. Extrusion spring; 118. Magnetic block; 119. Traction rope; 1110. Rubber pad; 12. Energy-saving transmission mechanism; 121. Accommodating cavity; 122. Transmission cavity; 123. Wind wheel; 124. Sprocket; 125. Chain; 126. First bevel gear; 127. Second bevel gear; 128. Wind collecting hood; 1281. Wind collecting part; 1282. Wind guide part; 1283. Wind collecting cavity; 1284. Exhaust trough. DETAILED DESCRIPTION

[0042] Cementing materials are the key to improving the performance of cementing. By using coal gangue instead of silica sand, it is mixed with limestone, fly ash, sulfuric acid slag, etc. in a weight ratio and then ground. Then, the residue on the 80-micron sieve of the ground product is controlled to be ≤18%, and the oil well cement raw meal is obtained. After that, the homogenized raw meal is preheated and decomposed through a 5-stage pre-decomposition kiln system, and then enters a rotary kiln to be calcined at 1350-1400°C. After melting and cooling, oil well cement clinker is obtained, which is then mixed with gypsum and ground into oil well cement, so that its strength at 38°C and 8h is ≥4MPa, and its strength at 60°C and 8h is ≥10.9MPa. At the same time, the temperature resistance range reaches above 120°C, and the density of the cementing composite material can be adjusted according to needs: 1.30-1.60g / cm3, and the cement slurry density does not change when the cement slurry stirring speed is 12000r / min. Since the gangue composition is stable and the silicon-aluminum ratio fluctuates little, the C3A content of the clinker can be further increased, and C3A hydration is relatively fast, which helps to exert the early strength of the cementing composite material. The strength of the ultra-low density cementing composite material at the same age can be increased by more than 1MPa, so that the cementing material can meet the needs of heavy oil thermal recovery cementing preparation.

[0043] like Figure 1The equipment for producing and preparing cementing materials for thermal recovery of heavy oil wells shown is an equipment used in the preheating and decomposition process of the cementing material preparation process. However, the equipment in the prior art has the problem that the lime raw material is easily blocked at the bottom port of the feed pipe during use, resulting in uneven feeding and poor continuity. Therefore, this embodiment provides equipment for producing and preparing cementing materials for thermal recovery of heavy oil wells. The equipment for producing and preparing cementing materials for thermal recovery of heavy oil wells includes a cyclone 1, an exhaust pipe 2, a feed pipe 3, and a mixing pipe 4. It should be noted that the number of cyclones 1 is three groups, and the upper and lower cyclones 1 are connected by the exhaust pipe 2, the feed pipe 3, and the mixing pipe 4, which can realize multi-stage preheating of the cement raw material, so that the preheating effect of the cement raw material is better. It also includes a feed box 5, which is fixedly connected to the outside of the mixing pipe 4, and a feed cavity 6 is provided on the inner side of the feed box 5, and a feed wheel 7 is rotatably connected to the inner side of the feed cavity 6, and the surface of the feed wheel 7 has a circular arc shape of the blades;

[0044] An air guide plate 8 is fixedly connected to the inner wall of the mixing tube 4. An impact block 9 is fixedly connected to the outer surface of the air guide plate 8. The number of the impact blocks 9 is at least six. A flow channel 10 is formed between adjacent impact blocks 9.

[0045] An auxiliary discharge mechanism 11, which is arranged on the top of the feed box 5 and is used to assist in discharging the cement raw material in the feed pipe 3;

[0046] In the present invention, the auxiliary unloading mechanism 11 includes a protective box 111 fixedly installed on the top of the feed box 5, the inner side surface of the protective box 111 is rotatably connected to a rotating wheel 112 coaxially fixedly connected to the feeding wheel 7, the top surface of the rotating wheel 112 is fixedly connected to a protrusion 113, the inner side surface of the protective box 111 is slidably connected to a T-bar 114, the surface of the T-bar 114 is provided with a slide groove 115, the inner side surface of the protective box 111 is slidably connected to a striking block 116, an extrusion spring 117 is fixedly connected between the striking block 116 and the inner wall of the protective box 111, the inner side surface of the protective box 111 is slidably connected to a magnetic block 118, a traction rope 119 is fixedly connected between the magnetic block 118 and the striking block 116, and the outer surface of the striking block 116 is fixedly connected to a rubber pad 1110.

[0047] In the present invention, the feeding chamber 6 is connected to the mixing tube 4, and the shape and size of the feeding chamber 6 are matched with the feeding wheel 7, that is, the blade surface of the feeding wheel 7 is in a state of sliding connection with the inner wall of the feeding chamber 6, so that the feeding of the feeding wheel 7 is more efficient, and it can prevent the material from remaining between the feeding wheel 7 and the feeding chamber 6 and being unable to be fully discharged. The shape of the air guide plate 8 is an arc surface, which can greatly reduce the impact force when the highly flowing hot air flow contacts the surface of the air guide plate 8, so that the service life of the air guide plate 8 can be effectively extended. And the position and size of the air guide plate 8 are matched with the discharge port of the feeding chamber 6, so that the air guide plate 8 can guide the airflow well, making it difficult for it to enter the interior of the feeding chamber 6 and cause the cement raw material to flow in the opposite direction, and at the same time, it can also play a guiding role for the spilled cement raw material.

[0048] In the present invention, all impact blocks 9 are equidistantly distributed on the surface of the air guide plate 8 along a straight line, and their positions and distribution specifications match the discharge port of the feeding chamber 6. The impact blocks 9 are in the shape of a flat terrace, which can disperse and discharge the raw cement delivered by the feeding wheel 7, so that the raw cement can contact the hot air flow in the mixing tube 4 in a more dispersed manner, so that under the impact of the hot air flow, the raw cement becomes more dispersed, which is conducive to better heat exchange preheating of the raw cement.

[0049] In the present invention, the protrusion 113 is slidably connected to the inner side surface of the slide groove 115, the T-bar 114 is made of metal iron material and its position corresponds to the magnetic block 118, and the rubber pad 1110 is in contact with the outer wall of the feeding tube 3, that is, the rubber pad 1110 will move and separate from the feeding tube 3 when subjected to a force in a direction away from the feeding tube 3. By setting the rubber pad 1110, the generation of noise can be effectively reduced, so that the degree of noise pollution is low. A fine groove is provided on the inner side surface of the protective box 111, and the two ends of the traction rope 119 are respectively passed through the fine groove and fixedly connected to the striking block 116 and the magnetic block 118, so that the traction rope 119 can be smoothly transmitted, that is, when one end thereof is subjected to traction, the other end thereof can transmit the traction force, so that the structure at the other end can move.

[0050] like Figures 2 to 6As shown, the energy-saving transmission mechanism 12 is arranged inside the mixing tube 4 and is used to provide power to the feeding wheel 7. The energy-saving transmission mechanism 12 includes a receiving chamber 121 and a transmission chamber 122 opened inside the mixing tube 4, the inner side surface of the receiving chamber 121 is rotatably connected to a wind wheel 123, the inner side surfaces of the receiving chamber 121 and the transmission chamber 122 are respectively rotatably connected to two sprocket wheels 124, a chain 125 is transmission-connected between the two sprocket wheels 124, the inner side surface of the transmission chamber 122 is rotatably connected to a first bevel gear 126 and a second bevel gear 127, and the inner side surface of the mixing tube 4 is fixedly connected to a wind collecting hood 128. Through the use of the energy-saving transmission mechanism 12, while effectively avoiding the waste of heat from the hot air flow inside the mixing tube 4, the flow force of the hot air flow can be used to provide power for the feeding wheel 7 and the rotating wheel 112, thereby effectively saving resources.

[0051] In the present invention, the sprocket 124 inside the accommodating chamber 121 is coaxially fixedly connected to the wind wheel 123, the sprocket 124 inside the transmission chamber 122 is coaxially fixedly connected to the first bevel gear 126, and the second bevel gear 127 is coaxially fixedly connected to the feeding wheel 7, so that the rotation of the wind wheel 123 can drive the feeding wheel 7 and the rotating wheel 112 to rotate synchronously, so that the feeding wheel 7 and the rotating wheel 112 do not need to use an additional power source to provide power, thereby effectively saving resources. A chain groove is provided between the accommodating chamber 121 and the transmission chamber 122, and the chain 125 passes through the chain groove, so that the normal transmission work of the chain 125 will not be blocked.

[0052] like Figures 5 and 6 As shown, the wind collecting hood 128 includes an wind collecting portion 1281 and an air guiding portion 1282. The air guiding portion 1282 is inclined in design, and can well guide and converge the hot air flow, but the relative movement resistance between the wind collecting hood 1281 and the hot air flow is small, so that the service life of the wind collecting hood 128 can be extended, and an air collecting cavity 1283 is formed between the wind collecting portion 1281 and the inner wall of the mixing tube 4, and an air exhaust groove 1284 is formed between the air guiding portion 1282 and the inner wall of the mixing tube 4. The top end of the air exhaust groove 1284 is located below the connecting port of the accommodating cavity 121. The wind collecting portion 1281 is vertically designed, so the hot air flow inside the vertical groove body of the air exhaust groove 1284 will remain in a vertical state and flow upward during the flow, so that when it contacts the wind wheel 123, it will apply a vertical upward thrust to the wind wheel 123, so that the wind wheel 123 can rotate better.

[0053] In the present invention, the blades on the wind wheel 123 extend through the accommodating chamber 121 to the interior of the mixing tube 4. The shape and size of the accommodating chamber 121 match the wind wheel 123, so that the upward hot air flow in the mixing tube 4 can drive the wind wheel 123 to rotate well under the guidance of the wind collecting cover 128.

[0054] A method for producing cementing materials for heavy oil thermal recovery wells comprises the following steps:

[0055] a. Feed the material to the feed box 5 through the feed pipe 3, and discharge the falling cement raw material to the mixing pipe 4 through the feed wheel 7;

[0056] b. The impact block 9 collides with the fast-moving cement raw material, and discharges the cement raw material into the mixing pipe 4 through the flow channel 10;

[0057] c. The hot air flow introduced through the exhaust pipe 2 is used to transport and preheat the spilled cement raw meal;

[0058] d. The cement raw material is preheated in multiple stages through multiple cyclones.

[0059] In summary, during operation, the hot air flow inside the mixing tube 4 flows rapidly from bottom to top, and the lime raw material is transported from top to bottom from the inside of the feeding tube 3. Under the wind-guiding effect of the wind collecting cover 128, part of the hot air flow flowing upwards along the inner wall of the wind collecting cover 128 is made, so that the hot air flow can be concentrated from the wind wheel 123 to the part of the blades in the mixing tube 4 and flow upwards, so that the wind wheel 123 can be stably driven to rotate at a high speed. Under the transmission effect of the two sprockets 124 and the chain 125, the wind wheel 12 During the rotation process, the first bevel gear 126 can be driven to rotate, and the rotation of the first bevel gear 126 can drive the second bevel gear 127 to rotate, and the rotation of the second bevel gear 127 can drive the feeding wheel 7 to rotate. When the feeding wheel 7 rotates, the lime raw material delivered from the feeding pipe 3 can be delivered to the mixing pipe 4. Under the delivery of the feeding wheel 7, the lime raw material will move along the surface of the air guide plate 8 and violently collide with the impact block 9 provided on the surface thereof, so that the lime raw material can be diffused more widely when entering the mixing pipe 4;

[0060] At the same time, through the mutual transmission between the wind wheel 123, chain 125, sprocket 124, first bevel gear 126 and second bevel gear 127 in the energy-saving transmission mechanism 12, it is possible to effectively avoid unnecessary waste of heat from the hot air flow inside the mixing tube, while using the flow force of the hot air flow to provide power for the feeding wheel 7 and the rotating wheel 112, thereby effectively saving resources.

[0061] When the feeding wheel 7 rotates, it will also drive the rotating wheel 112 coaxially fixed thereto to rotate. When the rotating wheel 112 rotates, it will drive the protrusion 113 on its surface to rotate. Under the cooperation of the slide groove 115, the protrusion 113 will drive the T-bar 114 to perform horizontal reciprocating motion during the rotation. When the T-bar 114 moves in the direction close to the feeding tube 3, the T-bar 114 will drive the magnetic block 118 to move synchronously and pull one end of the traction rope 119. Under the guidance of the fine groove, the other end will drive the striking block 116 and the rubber pad 1110 to move and separate from the feeding tube 3. At the same time, when the striking block 116 moves, it will squeeze the extrusion spring 117. When the magnetic attraction between the T-bar 114 and the magnetic block 118 is less than the extrusion spring When the spring 117 has a rebound force, the continued movement of the T-bar 114 will separate from the magnetic block 118, so that the magnetic block 118 is no longer pulled. At this time, under the action of the rebound force of the extrusion spring 117, the impact block 116 quickly moves in the opposite direction and drives the rubber pad 1110 to collide with the outer wall of the feeding pipe 3, so that the feeding pipe 3 vibrates and drives the lime raw material inside it to vibrate. This can not only speed up the discharge of the lime raw material, but also make the lime raw material entering the feeding chamber 6 more compact, so that the amount of lime raw material that can be discharged at one time is larger, and the discharge amount each time is more uniform, so that the lime raw material can be continuously, stably, evenly, efficiently and more dispersedly transported to the mixing pipe 4, so that its heat exchange preheating effect is better.

[0062] When the wind collecting hood 128 gathers and guides the hot air flow in the mixing tube 4, the hot air flow is gathered and guided by the wind collecting cavity 1283 formed between the wind collecting portion 1281 and the inner wall of the mixing tube 4, and the gathered air flow is guided vertically upward by the exhaust groove 1284 formed between the wind guiding portion 1282 and the inner wall of the mixing tube 4, so that the wind wheel 123 can continue to rotate stably at a high speed, thereby ensuring the stable supply of power to the impeller 112 and the feeding wheel 7.

[0063] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for producing and preparing cementing materials for heavy oil thermal recovery wells, comprising a cyclone (1), an exhaust pipe (2), a feed pipe (3) and a mixing pipe (4), characterized in that: Also includes: A feed box (5) is fixedly connected to the outside of the mixing pipe (4), and a feed cavity (6) is provided on the inner side of the feed box (5). A feed wheel (7) is rotatably connected to the inner side of the feed cavity (6), and the surface of the feed wheel (7) has blades in the shape of circular arcs; An air guide plate (8) fixedly connected to the inner wall of the mixing tube (4), an impact block (9) fixedly connected to the outer surface of the air guide plate (8), the number of the impact blocks (9) being at least six, and a flow channel (10) being formed between adjacent impact blocks (9); An auxiliary discharge mechanism (11), which is arranged on the top of the feed box (5) and is used to assist in discharging the cement raw material in the feed pipe (3); The auxiliary unloading mechanism (11) comprises a protective box (111) fixedly mounted on the top of the feed box (5); the inner side surface of the protective box (111) is rotatably connected to a rotating wheel (112) coaxially fixedly connected to the feeding wheel (7); the top surface of the rotating wheel (112) is fixedly connected to a protrusion (113); the inner side surface of the protective box (111) is slidably connected to a T-shaped rod (114); a sliding groove (115) is provided on the surface of the T-shaped rod (114); the inner side surface of the protective box (111) is slidably connected to a striking block (116); an extrusion spring (117) is fixedly connected between the striking block (116) and the inner wall of the protective box (111); a magnetic block (118) is slidably connected to the inner side surface of the protective box (111); a traction rope (119) is fixedly connected between the magnetic block (118) and the striking block (116); and a rubber pad (1110) is fixedly connected to the outer surface of the striking block (116); An energy-saving transmission mechanism (12), which is arranged inside the mixing tube (4) and is used to provide power to the feeding wheel (7); The feeding chamber (6) is connected to the mixing tube (4); the shape and size of the feeding chamber (6) match the feeding wheel (7); the shape of the air guide plate (8) is an arc surface; and the position and size of the air guide plate (8) match the discharge port of the feeding chamber (6); All the impact blocks (9) are distributed equidistantly along a straight line on the surface of the air guide plate (8), and their positions and distribution specifications match the discharge port of the feeding cavity (6), and the shape of the impact blocks (9) is a flat terrace; The energy-saving transmission mechanism (12) comprises a receiving chamber (121) and a transmission chamber (122) provided inside the mixing tube (4); the inner side surface of the receiving chamber (121) is rotatably connected to a wind wheel (123); the inner side surfaces of the receiving chamber (121) and the transmission chamber (122) are respectively rotatably connected to two sprocket wheels (124); a chain (125) is transmission-connected between the two sprocket wheels (124); the inner side surface of the transmission chamber (122) is rotatably connected to a first bevel gear (126) and a second bevel gear (127); and the inner side surface of the mixing tube (4) is fixedly connected to a wind collecting cover (128); The sprocket (124) inside the accommodating chamber (121) is coaxially fixedly connected to the wind wheel (123), the sprocket (124) inside the transmission chamber (122) is coaxially fixedly connected to the first bevel gear (126), the second bevel gear (127) is coaxially fixedly connected to the feeding wheel (7), a chain groove is provided between the accommodating chamber (121) and the transmission chamber (122), and the chain (125) passes through the chain groove.

2. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells according to claim 1, characterized in that: The protrusion (113) is slidably connected to the inner side surface of the slide groove (115); the T-bar (114) is made of metal iron material and is positioned corresponding to the magnetic block (118); the rubber pad (1110) is in contact with the outer wall of the feeding tube (3); a fine groove is provided on the inner side surface of the protection box (111); two ends of the traction rope (119) pass through the fine groove and are fixedly connected to the striking block (116) and the magnetic block (118) respectively.

3. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells according to claim 1, characterized in that: The air collecting hood (128) comprises an air collecting portion (1281) and an air guiding portion (1282); an air collecting cavity (1283) is formed between the air collecting portion (1281) and the inner wall of the mixing tube (4); an air exhaust groove (1284) is formed between the air guiding portion (1282) and the inner wall of the mixing tube (4); the top end of the air exhaust groove (1284) is located below the connecting port of the accommodating cavity (121).

4. The equipment for producing and preparing cementing materials for heavy oil thermal recovery wells according to claim 1, characterized in that: The upper blades of the wind wheel (123) extend through the accommodating chamber (121) to the interior of the mixing tube (4); the shape and size of the accommodating chamber (121) match those of the wind wheel (123).

5. A method for producing and preparing cementing materials for thermal recovery of heavy oil wells, applied to the equipment for producing and preparing cementing materials for thermal recovery of heavy oil wells according to any one of claims 1 to 4, characterized in that: The following steps are involved: a. Feeding materials to the feed box (5) through the feeding pipe (3), and discharging the falling cement raw materials to the mixing pipe (4) through the feeding wheel (7); b. The impact block (9) collides with the fast-moving cement raw material, and discharges the cement raw material into the mixing pipe (4) through the flow channel (10); c. The hot air flow introduced through the exhaust pipe (2) is used to entrain and transport the spilled cement raw meal and to preheat it; d. The cement raw material is preheated in multiple stages through multiple cyclones.

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