Superheating device for oil field steam injection boiler

Abstract

The utility model discloses a kind of oilfield steam injection boiler superheating steam injection devices, including shell, the inside installation of shell is equipped with superheater main body, the inside setting of shell is cleaned mechanism, the dust transport mechanism is set below superheater main body in shell;The shell bottom is set to accumulate dust outlet;The outside setting of shell is drive mechanism, the drive mechanism is connected with dust transport mechanism transmission.This utility model can be automatically transported by dust transport mechanism to the accumulated dust outlet, avoid the dust to be randomly scattered and accumulated in the bottom of boiler, reduce the risk that dust and superheater contact again, improve the working environment inside boiler simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of boiler superheater technology, specifically a superheating steam injection device for an oilfield steam injection boiler. Background Technology

[0002] Oilfield steam injection boilers are widely used equipment in the extraction of heavy oil. Their main function is to generate high-temperature, high-pressure steam, which is then injected into the oil reservoir. Superheated steam injection is a special type of steam injection. The boiler first heats water to its boiling point by burning fuel (such as natural gas or crude oil) to produce saturated steam. Then, the steam passes through a special superheater, a heat exchange device that uses high-temperature flue gas or other heat sources to reheat the saturated steam. For example, in some large steam injection boiler systems, after the saturated steam exits the boiler's steam drum, it enters the superheater located in the flue, absorbing heat from the high-temperature flue gas, thus raising the steam temperature to a superheated state. After being injected into the oil reservoir, the superheated steam, due to its higher temperature, can carry more heat. Compared to saturated steam, it can maintain a higher temperature over a greater distance, thus more effectively heating the heavy oil, reducing its viscosity, and improving extraction efficiency. As can be seen from the above description, current superheated steam injection devices require reheating by a superheater before transportation.

[0003] Announcement No.: CN218328112U discloses a boiler superheater for preventing ash accumulation, including a superheater body and a gas collecting manifold connected to the boiler. The superheater body is connected to a fixed plate, and the fixed plate has a movable slot along its length. Several movable blocks are locked in the movable slot, and one side of each movable block extends out of the movable slot and is connected to an elastic clamp. The gas collecting manifold is connected to a steam pipe, and the steam pipe is equipped with a regulating valve. The steam pipe is connected to several gas outlet pipes, all of which are flexible metal hoses. One side of the elastic clamp has an inlet and outlet, and the diameter of the elastic clamp is adapted to the gas outlet pipe.

[0004] In this prior art, some boiler steam is drawn from the gas collecting manifold for ash removal to avoid boiler shutdown caused by superheater blockage. After the ash is removed, the ash falls into the ash collection trough below for collection. However, when the ash accumulates to a certain height, it may come into direct contact with the superheater, affecting its operation. Furthermore, this prior art makes it difficult to remove the ash accumulated at the bottom of the superheater.

[0005] Announcement No. CN218480603U discloses a superheater tube bundle with automatic dust removal function, including a tube bank assembly and two rapping mechanisms. The upper end of the tube bank assembly is connected to a distribution manifold, and the upper side of the distribution manifold is connected to an air inlet. The lower end of the tube bank assembly is connected to a collection manifold, and the lower side of the collection manifold is connected to an air outlet. The two rapping mechanisms are symmetrically arranged on both sides of the tube bank assembly, and a rapping tube is fixedly connected between the two rapping mechanisms. The rapping tube is installed in the tube bank assembly.

[0006] In this prior art, the tube assembly is cleaned by vibration and soot blowing pipes, but the structure of this prior art makes it difficult to remove the ash accumulated at the bottom of the superheater.

[0007] Announcement No. CN220870898U discloses a boiler soot blower, comprising: a gas supply pipe for connecting to a compressed gas source; an outer sleeve sealed to the gas supply pipe and movable along the axial direction of the gas supply pipe, the outer sleeve having a first air passage communicating with the gas supply pipe; a soot blowing nozzle rotatably mounted to the outer sleeve via a mounting shaft, the soot blowing nozzle having a second air passage communicating with the first air passage, the axis of the mounting shaft being perpendicular to the axis of the outer sleeve; and a driving device, the driving device being kinetically connected to the soot blowing nozzle to drive the soot blowing nozzle to rotate about a rotation axis parallel to the axis of the mounting shaft.

[0008] The existing technology uses a rotating soot blowing nozzle for cleaning, but its structure makes it difficult to remove the ash accumulated at the bottom of the superheater.

[0009] Announcement No. CN219571967U discloses a novel boiler screen-type superheater, including a connecting main pipe. Several superheated tubes arranged in a uniform manner are welded to the lower outer wall of the connecting main pipe. The superheated tubes are U-shaped and both ends are welded to the connecting main pipe. A first gap clamping plate and a second gap clamping plate are symmetrically arranged on both sides of the middle of the superheated tubes. The first gap clamping plate and the second gap clamping plate are fixed and clamped to the superheated tubes. Each of the first gap clamping plate and the second gap clamping plate is provided with an air blowing box. Several air blowing ports are opened on the upper and lower sides of the air blowing box. A vent pipe is connected to one end of the air blowing box.

[0010] The existing technology uses a vented soot blowing nozzle for cleaning, but its structure makes it difficult to remove the ash accumulated at the bottom of the superheater.

[0011] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of this utility model. For more technical features, technical problems to be solved, and beneficial effects of this utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0012] In view of the above-mentioned defects in the existing technology, the purpose of this utility model is to provide a superheated steam injection device for oilfield steam injection boilers.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] A superheated steam injection device for an oilfield steam injection boiler includes a shell, a superheater body installed inside the shell, an ash cleaning mechanism inside the shell, a dust transport mechanism below the superheater body inside the shell, an ash outlet at the bottom of the shell, and a drive mechanism outside the shell, which is connected to the dust transport mechanism.

[0015] Furthermore, the dust transport mechanism includes a drive roller, a conveyor belt, and a scraper;

[0016] Specifically, drive rollers are rotatably arranged at both ends in the bottom mounting groove, and a conveyor belt is provided for the common transmission between the two drive rollers. The drive roller closer to the drive mechanism is connected to the drive mechanism for transmission.

[0017] Specifically, a scraper is provided on the outer surface of the conveyor belt, and the scraper can abut against the bottom of the bottom mounting groove. The housing is provided with a dust collection outlet directly below a drive roller, so that the scraper can scrape the dust in the bottom mounting groove into the dust collection outlet.

[0018] Furthermore, at least two scrapers are provided and are equidistantly distributed.

[0019] Furthermore, the dust removal mechanism includes a cleaning plate;

[0020] Specifically, a cleaning plate is slidably fitted onto the superheater body, and the cleaning plate can slide up and down along the superheater body. The cleaning plate is connected to the shell via a linear motion mechanism.

[0021] Specifically, the drive mechanism is connected to the linear motion mechanism via a transmission connection.

[0022] Furthermore, the superheater body is a reciprocating coil, and the shell is a rectangular shell with one-way penetration, the penetration direction of the shell being perpendicular to the plane where the superheater body is located;

[0023] Specifically, the shell has a bottom mounting groove below the superheater body, the dust transport mechanism is installed in the bottom mounting groove, the inner two side walls of the shell have side mounting grooves, and the side mounting grooves have linear movement mechanisms installed in the side mounting grooves.

[0024] Furthermore, the linear motion mechanism includes a lead screw;

[0025] Specifically, the upper and lower ends of the side mounting groove are provided with fixing blocks, and the fixing blocks located in the same side mounting groove are rotatably connected to a lead screw. The two ends of the cleaning plate are threadedly connected to the lead screw.

[0026] Specifically, of the two lead screws, the lead screw closer to the drive mechanism is connected to the drive mechanism via transmission, while the lead screw farther from the drive mechanism is connected to the drive roller farther from the drive mechanism via transmission.

[0027] Furthermore, adjacent lead screws and drive rollers are connected via a synchronous rotation unit;

[0028] Specifically, the synchronous rotation unit includes a first drive shaft and a second drive shaft;

[0029] Specifically, the first drive shaft is connected to the drive roller, and the first drive shaft is connected to the first drive wheel;

[0030] Specifically, the housing is rotatably connected to the second drive shaft, the second drive shaft is connected to the lower end of the lead screw through a bevel gear set, and the portion of the second drive shaft outside the housing is connected to the second drive wheel;

[0031] Specifically, the first drive wheel and the second drive wheel are connected by a first belt drive;

[0032] Specifically, the output shaft of the drive mechanism is connected to a first transmission shaft.

[0033] Furthermore, the cleaning plate is provided with through holes for fitting onto the vertical tube of the superheater body; the cleaning plate is provided with threaded holes at both ends, which are threadedly connected to the lead screw.

[0034] Specifically, a through groove is provided between the through hole and the threaded hole, and between every two through holes, and the top of the through groove is chamfered.

[0035] Furthermore, it also includes a dust collection mechanism, which includes a mounting cover connected to the housing and positioned below the dust collection outlet;

[0036] Specifically, the collection box is connected inside the mounting cover via a rocking mechanism, and the bottom mounting groove communicates with the inside of the collection box;

[0037] Specifically, the output shaft of the drive mechanism is connected to a first transmission shaft near the ash collection outlet, and the rocking mechanism is connected to the first transmission shaft near the ash collection outlet.

[0038] Furthermore, the rocking mechanism includes a rocking plate, a rotating shaft, and a push block;

[0039] Specifically, a rectangular groove is formed through the middle of the shaking plate, and arc-shaped grooves are formed at the diagonal corners of the rectangular groove; the push blocks are Y-shaped push blocks that are evenly distributed; the rotating shaft is rotatably connected to the mounting cover through a bearing, and the push blocks are connected to the end of the rotating shaft away from the mounting cover, and the push blocks are located in the rectangular groove of the shaking plate;

[0040] Specifically, both ends of the shaking plate are slidably connected to the mounting cover via connecting rods, and the outer walls of both ends of the collection box abut against the ends of the two connecting rods respectively;

[0041] Specifically, the distance between the two ends of the push block is less than the longitudinal distance of the rectangular groove, the distance between the two ends of the push block is greater than the horizontal distance of the rectangular groove, the end of the push block can abut against the side wall of the rectangular groove, and the arc-shaped groove and the push block never come into contact.

[0042] Specifically, the swaying plate is located on the side of the mounting cover near the drive mechanism, a third drive wheel is provided on the first drive shaft, a fourth drive wheel is provided on the rotating shaft, and the third drive wheel and the fourth drive wheel are connected by a second belt drive.

[0043] Compared with the prior art, the present invention has the following advantages:

[0044] 1. By driving the relevant transmission components through the drive motor, the cleaning plate can move up and down to effectively clean the dust on the outer wall of the superheater's main pipes, ensuring that the heat exchange efficiency of the superheater is not affected by dust accumulation and maintaining its normal operating performance.

[0045] 2. The cleaned dust can be automatically transported to the collection box inside the installation cover through the coordinated work of components such as the installation slot, conveyor belt and scraper, realizing centralized collection of dust, avoiding dust from falling and accumulating randomly at the bottom of the boiler, reducing the risk of dust coming into contact with the superheater again, and also improving the working environment inside the boiler.

[0046] 3. During the operation of the drive motor, the second belt drives the rotating shaft to rotate, which in turn causes the pusher to push the swaying plate to move left and right. The swaying plate drives the collection box to move repeatedly through the connecting rod, so that the collected dust can be evenly spread throughout the collection box. This can improve the utilization rate of its internal space without increasing the volume of the collection box, extend the cleaning cycle of the collection box, reduce the workload of frequently cleaning the collection box, and improve the practicality and convenience of the entire dust cleaning and collection system. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of a superheated steam injection device for an oilfield steam injection boiler according to this utility model;

[0048] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0049] Figure 3 This is a schematic diagram of the cleaning plate structure of this utility model;

[0050] Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle;

[0051] Figure 5 yes Figure 3 Enlarged structural diagram at point B.

[0052] In the diagram: 1. Shell; 11. Superheater body; 12. Mounting groove; 13. Drive roller; 14. Conveyor belt; 15. Scraper; 16. Drive motor;

[0053] 2. Lead screw; 21. Cleaning plate; 22. Through groove;

[0054] 3. First drive shaft; 31. Second drive shaft; 32. First belt;

[0055] 4. Mounting cover; 41. Collection box; 42. Shaking plate; 43. Rectangular groove; 44. Arc groove; 45. Rotating shaft; 46. Push block; 47. Connecting rod; 48. Second belt. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] Example 1:

[0058] Please see Figures 1 to 5 This utility model provides a superheated steam injection device for an oilfield steam injection boiler, comprising a shell 1, a superheater body 11 installed inside the shell 1, a dust transport mechanism disposed below the superheater body 11 inside the shell 1, a cleaning plate 21 slidably mounted on the superheater body 11, the cleaning plate 21 being able to slide up and down along the superheater body 11, the cleaning plate 21 being connected to the shell 1 via a linear movement mechanism, and a drive mechanism disposed outside the shell 1, the drive mechanism being connected to the dust transport mechanism and the linear movement mechanism.

[0059] Specifically, the superheater body 11 is a reciprocating coil, and the cleaning plate 21 is sleeved on the vertical tube of the superheater body 11.

[0060] Specifically, an inlet pipe and an outlet pipe are respectively installed at both ends of the superheater body 11. The inlet pipe is connected to the steam drum, and the outlet pipe is connected to the device injected into the oil field. The heated water is separated into gas and liquid by the steam drum. The steam from the separation process enters the superheater body 11 for further heating, and then is sent into the device injected into the oil field through the outlet pipe, waiting to be injected into the oil field later.

[0061] Specifically, the shell 1 is a rectangular shell with one-way penetration, and the penetration direction of the shell 1 is perpendicular to the plane where the superheater body 11 is located. The shell 1 is provided with a bottom mounting groove 12 below the superheater body 11, and the dust transport mechanism is set in the bottom mounting groove 12. The inner two side walls of the shell 1 are provided with side mounting grooves, and the side mounting grooves are provided with linear movement mechanisms. After the shell 1 is welded or bolted to the flue, the bottom mounting groove 12 can reduce the impact of flue gas on the dust transport mechanism, and the side mounting grooves can reduce the impact of flue gas on the linear movement mechanism.

[0062] Furthermore, the dust transport mechanism includes a drive roller 13, a conveyor belt 14, and a scraper 15. The drive roller 13 is rotatably arranged at both ends in the bottom mounting groove 12, and the conveyor belt 14 is driven together between the two drive rollers 13. The drive roller 13 near the drive mechanism is connected to the drive mechanism. The outer surface of the conveyor belt 14 is provided with a scraper 15, which can abut against the bottom of the bottom mounting groove 12. The housing 1 is provided with a dust collection outlet directly below one of the drive rollers 13, so that the scraper 15 can scrape the dust accumulated in the bottom mounting groove 12 into the dust collection outlet.

[0063] Specifically, at least two scrapers 15 are provided and are distributed at equal intervals. Providing multiple scrapers 15 can reduce the wear of dust accumulation on a single scraper 15.

[0064] Specifically, the scraper 15 is flexibly connected to the conveyor belt 14 at one end. This arrangement ensures that the scraper 15 can pass over the drive roller 13 along with the conveyor belt 14, thus enabling repeated conveying.

[0065] Preferably, the conveyor belt 14 is a scorch-resistant conveyor belt, and the scraper 15 is sewn to the conveyor belt 14 by quartz fiber sewing thread, so that the dust transport mechanism can withstand the high temperature of the flue gas.

[0066] Furthermore, the linear motion mechanism includes a lead screw 2, and a fixing block is provided at the upper and lower ends of the side mounting groove. The fixing blocks located in the same side mounting groove are rotatably connected to the lead screw 2 through a thrust bearing. The two ends of the cleaning plate 21 are threadedly connected to the lead screw 2. Among the two lead screws 2, the lead screw 2 closer to the drive mechanism is connected to the drive mechanism, and the lead screw 2 farther away from the drive mechanism is connected to the drive roller 13 farther away from the drive mechanism.

[0067] Specifically, the thrust bearing is a silicon nitride ceramic thrust bearing to avoid the high temperature of the flue gas affecting the operation of the thrust bearing.

[0068] Furthermore, the cleaning plate 21 is horizontally arranged, and the cleaning plate 21 is provided with through holes. The through holes are used to fit onto the vertical tube of the superheater body 11. When the through holes move up and down, they scrape off the accumulated ash on the vertical tube of the superheater body 11. The cleaning plate 21 is provided with threaded holes at both ends, and the threaded holes are threadedly connected to the lead screw 2. A through groove 22 is provided between the through holes and the threaded holes, and between every two through holes, for the accumulated ash scraped off the vertical tube of the superheater body 11 to fall into the bottom mounting groove 12.

[0069] Specifically, the top of the through groove 22 is chamfered. This design ensures that when the cleaning plate 21 moves upward to process the dust, the processed dust will fall directly into the bottom mounting groove 12 below through the through groove 22 for collection.

[0070] Specifically, the through hole and threaded hole are located on the transverse center line of the cleaning plate 21.

[0071] Specifically, the cleaning plate 21 is segmented at the through-hole and threaded hole, and the cleaning plate 21 is provided with through bolt holes on both sides of the transverse center line. The segmented cleaning plate 21 is assembled onto the superheater body 11 and the lead screw 2 by bolts and nuts, which facilitates the disassembly and assembly of the cleaning plate 21.

[0072] Specifically, when no cleaning operation is being performed, the cleaning plate 21 is placed at the upper or lower end of the superheater body 11. The edge temperature of the flue gas is lower than its center temperature. The cleaning plate 21 being located at the edge of the flue gas can reduce the ambient temperature of the cleaning plate 21.

[0073] Furthermore, adjacent lead screws 2 and drive rollers 13 are connected via a synchronous rotation unit, which includes a first drive shaft 3 and a second drive shaft 31. The first drive shaft 3 is connected to the drive roller 13 via a key, and a first drive wheel is connected to the first drive shaft 3 via a key. The housing 1 is rotatably connected to the second drive shaft 31 via bearings. The second drive shaft 31 is connected to the lower end of the lead screw 2 via a bevel gear set. The portion of the second drive shaft 31 outside the housing 1 is connected to the second drive wheel via a key. The first drive wheel and the second drive wheel are connected via a first belt 32. The drive mechanism includes a drive motor 16, and the output shaft of the drive motor 16 is connected to a first drive shaft 3 via a coupling. The drive motor 16 provides power for the operation of the device. By setting the first belt 32, the first drive shaft 3 and the second drive shaft 31 can be connected via transmission, so that when the drive motor 16 works, it directly drives the lead screw 2 and the conveyor belt 14 to work together.

[0074] Specifically, the first belt 32 and the corresponding transmission wheel can be connected by a toothed belt structure to eliminate lag.

[0075] Specifically, when the lead screw 2 moves the cleaning plate 21 from the lower end of the lead screw 2 to the upper end of the lead screw 2 or moves the cleaning plate 21 from the upper end of the lead screw 2 to the lower end, the drive roller 13 causes a scraper 15 on the conveyor belt 14 to move from the end away from the ash collection outlet to above the ash collection outlet at the bottom of the mounting groove 12, scraping the ash at the bottom of the mounting groove 12 into the ash collection outlet.

[0076] Example 2:

[0077] Based on Embodiment 1, this embodiment also includes a dust collection mechanism. The dust collection mechanism includes a mounting cover 4, which is welded to the housing 1. The mounting cover 4 is located below the dust collection outlet. The mounting cover 4 is connected to the collection box 41 via a rocking mechanism. The bottom mounting groove 12 communicates with the interior of the collection box 41, and the collection box 41 can slide within the mounting cover 4. The drive motor 16 is connected to the first transmission shaft 3 near the dust collection outlet, and the rocking mechanism is driven by the first transmission shaft 3 near the dust collection outlet. This arrangement facilitates the collection of dust cleaned by the conveyor belt 14 and scraper 15 into the collection box 41, making it convenient for subsequent workers to collect the dust directly and improving operational efficiency.

[0078] Specifically, the shaking mechanism includes a shaking plate 42, a rotating shaft 45, and push blocks 46. A rectangular groove 43 is formed through the middle of the shaking plate 42, and arc-shaped grooves 44 are formed at opposite corners within the rectangular groove 43. The push blocks 46 are evenly distributed Y-shaped push blocks. The rotating shaft 45 is rotatably connected to the mounting cover 4 via bearings. The push blocks 46 are connected to the ends of the rotating shaft 45 furthest from the mounting cover 4, and are located within the rectangular groove 43 of the shaking plate 42. Both ends of the shaking plate 42 are slidably connected to the mounting cover 4 via connecting rods 47. The two ends of the collection box... The outer walls of the push block 46 abut against the ends of the two connecting rods 47 respectively; the distance between the two ends of the push block 46 is less than the longitudinal distance of the rectangular groove 43, and the distance between the two ends of the push block 46 is greater than the horizontal distance of the rectangular groove 43. The push block 46 can abut against the side wall of the rectangular groove 43, and the arc groove 44 never contacts the push block 46; the swaying plate 42 is located on the side of the mounting cover 4 near the drive motor 16, a third drive wheel is provided on the first drive shaft 3, and a fourth drive wheel is provided on the rotating shaft 45. The third drive wheel and the fourth drive wheel are connected by a second belt 48.

[0079] Specifically, the wall of the mounting cover 4 away from the shaking plate 42 is a sealing plate, and the sealing plate is connected to the mounting cover 4 by bolts and sealed with a heat-resistant sealing ring.

[0080] Specifically, the connecting rod 47 is a U-shaped rod, one end of which is welded to the shaking plate 42, and the end of the connecting rod 47 away from the shaking plate 42 is slidably inserted into the mounting cover 4 and abuts against the outer wall of the collection box 41.

[0081] Specifically, the second belt 48 and the corresponding drive wheel can be connected by a toothed belt structure to eliminate lag.

[0082] When the rotating shaft 45 rotates, the push block 46 can be directly controlled to repeatedly push the shaking plate 42 to move left and right. As a result, the connecting rods 47 at both ends of the shaking plate 42 will push the collection box 41 inside the mounting cover 4 to move repeatedly, so that the dust collected in the collection box 41 can be evenly spread throughout the collection box 41, improving the utilization of storage space and ensuring that there is enough storage space inside when one end is not cleaned for a period of time.

[0083] The rotating shaft 45 is connected to the adjacent first drive shaft 3 by a second belt 48. This arrangement allows the rotating shaft 45 to rotate together with the drive roller 13 when the roller rotates.

[0084] Example 3:

[0085] Based on Example 2, this example provides a method for using a superheated steam injection device for an oilfield steam injection boiler, including the following steps:

[0086] In operation, the drive motor 16 starts working, causing the first drive shaft 3 and the second drive shaft 31 to work together via the first belt 32. The second drive shaft 31 drives the lead screw 2 to rotate, which in turn drives the cleaning plate 21 to move up and down. The moving cleaning plate 21 cleans the outer wall of the vertical tube of the superheater body 11, removing dust. The removed dust falls into the bottom mounting groove 12 below. At the same time, the first drive shaft 3 drives the drive roller 13 to rotate, which in turn drives the conveyor belt 14 to move. The conveyor belt 14 then carries the dust along with it. The dust above 14 will gradually move to the position of the mounting cover 4, so that the dust falls into the collection box 41 inside the mounting cover 4. At the same time, after the lead screw 2 drives the cleaning plate 21 to move to the bottom, the drive motor 16 will start in reverse, the lead screw 2 will rotate in the opposite direction, and the cleaning plate 21 will move upward. At the same time, the conveyor belt 14 will move in the opposite direction, and the scraper 15 fixed on the conveyor belt 14 will abut against the bottom of the bottom mounting groove 12. The scraper 15 will push the dust at the bottom of the bottom mounting groove 12 into the collection box 41 inside the mounting cover 4, so that the dust can be concentrated into the collection box 41 and collected, thus avoiding the accumulation of dust at the bottom of the shell 1 and affecting the superheater body 11.

[0087] When the drive motor 16 is working, the second belt 48 drives the rotating shaft 45 to rotate. When the rotating shaft 45 rotates, one end of the push block 46 will abut against the side wall of the rectangular groove 43. At this time, the push block 46 pushes the rocking plate 42 to move towards one end. Then, one end of the push block 46 will enter the arc groove 44. At this time, the other end of the push block 46 will abut against the other side of the rectangular groove 43. At this time, the rocking plate 42 will move towards the other end. After the above operation, when the rotating shaft 45 rotates, the push block 46 can be directly controlled to repeatedly push the rocking plate 42 to move left and right. Thus, the connecting rods 47 at both ends of the rocking plate 42 will push the collection box 41 in the mounting cover 4 to move repeatedly, so that the dust collected in the collection box 41 can be evenly spread in the collection box 41, improving the utilization of storage space and ensuring that there is enough storage space inside when one end is not cleaned for a period of time.

[0088] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0089] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0090] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0091] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A superheated steam injection device for an oilfield steam injection boiler, comprising a shell, wherein a superheater body is installed inside the shell, and an ash cleaning mechanism is provided inside the shell, characterized in that, A dust removal mechanism is installed inside the casing below the superheater body; A dust collection outlet is provided at the bottom of the shell; A drive mechanism is provided on the outside of the housing, and the drive mechanism is connected to the dust transport mechanism.

2. The superheated steam injection device for an oilfield steam injection boiler according to claim 1, characterized in that, The dust transport mechanism includes a drive roller, a conveyor belt, and a scraper. The shell has a bottom mounting groove below the superheater body. Drive rollers are rotatably installed at both ends of the bottom mounting groove. A conveyor belt is installed between the two drive rollers for common transmission. The drive roller near the drive mechanism is connected to the drive mechanism for transmission. The outer surface of the conveyor belt is provided with a scraper that can abut against the bottom of the bottom mounting groove. The housing is provided with a dust collection outlet directly below a drive roller, so that the scraper can scrape the dust in the bottom mounting groove into the dust collection outlet.

3. The superheated steam injection device for an oilfield steam injection boiler according to claim 2, characterized in that, The scraper is provided in at least two parts, and is distributed at equal intervals.

4. The superheated steam injection device for an oilfield steam injection boiler according to claim 2, characterized in that, The dust removal mechanism includes a cleaning plate; A cleaning plate is slidably fitted onto the superheater body. The cleaning plate can slide up and down along the superheater body. The cleaning plate is connected to the shell via a linear motion mechanism. The drive mechanism is connected to the linear motion mechanism via a transmission connection.

5. The superheated steam injection device for an oilfield steam injection boiler according to claim 4, characterized in that, The superheater body is a reciprocating coil, and the shell is a rectangular shell with one-way penetration, the penetration direction of the shell being perpendicular to the plane of the superheater body. The dust transport mechanism is installed in the bottom mounting groove, and the two inner side walls of the housing are provided with side mounting grooves, in which a linear movement mechanism is installed.

6. The superheated steam injection device for an oilfield steam injection boiler according to claim 5, characterized in that, The linear motion mechanism includes a lead screw; The upper and lower ends of the side mounting groove are provided with fixing blocks. The fixing blocks located in the same side mounting groove are rotatably connected to a lead screw. The two ends of the cleaning plate are threadedly connected to the lead screw. Of the two lead screws, the one closer to the drive mechanism is connected to the drive mechanism via transmission, while the one farther from the drive mechanism is connected to the drive roller that is also farther from the drive mechanism via transmission.

7. The superheated steam injection device for an oilfield steam injection boiler according to claim 6, characterized in that, Adjacent lead screws and drive rollers are connected by a synchronous rotation unit; The synchronous rotation unit includes a first drive shaft and a second drive shaft; The first drive shaft is connected to the drive roller, and the first drive shaft is connected to the first drive wheel; The housing is rotatably connected to the second drive shaft, and the second drive shaft is connected to the lower end of the lead screw through a bevel gear set. The portion of the second drive shaft outside the housing is connected to the second drive wheel. The first drive wheel and the second drive wheel are connected by a first belt drive; The output shaft of the drive mechanism is connected to a first transmission shaft.

8. The superheated steam injection device for an oilfield steam injection boiler according to claim 4, characterized in that, The cleaning plate is provided with through holes for fitting onto the vertical tube of the superheater body; the cleaning plate is provided with threaded holes at both ends for threaded connection with the lead screw. A through groove is provided between the through hole and the threaded hole, and between every two through holes, and the top of the through groove is chamfered.

9. A superheated steam injection device for an oilfield steam injection boiler according to claim 7, characterized in that, It also includes a dust collection mechanism, which includes a mounting cover connected to the housing and positioned below the dust collection outlet; The collection box is connected inside the mounting cover via a rocking mechanism, and the bottom mounting groove communicates with the inside of the collection box; The output shaft of the drive mechanism is connected to a first transmission shaft near the ash collection outlet, and the rocking mechanism is connected to the first transmission shaft near the ash collection outlet.

10. A superheated steam injection device for an oilfield steam injection boiler according to claim 9, characterized in that, The rocking mechanism includes a rocking plate, a rotating shaft, and a push block; A rectangular groove is formed through the middle of the swaying plate, and arc-shaped grooves are formed at the diagonal corners of the rectangular groove; the push blocks are Y-shaped push blocks that are evenly distributed; the rotating shaft is rotatably connected to the mounting cover through a bearing, and the push blocks are connected to the end of the rotating shaft away from the mounting cover, and the push blocks are located in the rectangular groove of the swaying plate; Both ends of the shaking plate are slidably connected to the mounting cover via connecting rods, and the outer walls of both ends of the collection box abut against the ends of the two connecting rods respectively; The distance between the two ends of the push block is less than the longitudinal distance of the rectangular groove, and the distance between the two ends of the push block is greater than the horizontal distance of the rectangular groove. The end of the push block can abut against the side wall of the rectangular groove, and the arc-shaped groove and the push block never come into contact. The swaying plate is located on the side of the mounting cover near the drive mechanism. A third drive wheel is provided on the first drive shaft, and a fourth drive wheel is provided on the rotating shaft. The third drive wheel and the fourth drive wheel are connected by a second belt drive.

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