Oil field steam injection boiler body temperature difference scanning and coordinate indicating device and method

Abstract

The application discloses a kind of oilfield steam injection boiler furnace body temperature difference scanning and coordinate indicating device and method, including scanning device, still including coordinate indicating device;The scanning device includes reciprocating scanning support, and scanning module is fixed in the reciprocating scanning support;The coordinate indicating device includes projection module, and the projection module is used to project the scanning data of scanning module.The present application is suitable for the surface temperature file establishment of oilfield steam injection boiler and internal heat preservation maintenance construction, with positioning accurate, easy to use, reduce construction labor intensity and other advantages.The present application can find the initial, small area of the internal overheating point of furnace body under the projection indication of projection device, so as to formulate small area maintenance measures, prevent the further damage and deterioration of heat preservation in overheated area, realize the "preventive" repair of boiler heat preservation, effectively prolong the service life of internal heat preservation of boiler, reduce the safety risk of worker scald, burn.

Description

Technical Field

[0001] This invention relates to the field of boiler maintenance technology, specifically to a device and method for scanning and indicating the temperature difference of an oilfield steam injection boiler body. Background Technology

[0002] Steam injection boilers are the main equipment for heavy oil extraction in oil fields, and are mainly divided into two types: mobile steam injection boilers and stationary steam injection boilers. The boiler uses natural gas as a heat source, heating softened water in the furnace tubes to generate high-temperature, high-pressure steam which is then injected into the bottom layer. The boiler body has a steel outer shell, and for safety reasons and to reduce heat loss, a 20cm thick insulation layer is installed inside the boiler shell for heat preservation.

[0003] Oilfield steam injection boilers are frequently relocated, and with increasing service life, the internal insulation layer of the furnace will show varying degrees of damage. The boiler is approximately 18 meters long, with a radiant section of over 6 meters. During boiler operation, the hot spots on the furnace surface pose a safety hazard to on-site operators, resulting in burns and scalds.

[0004] To obtain information about the location of hot spots in a boiler, the only way is to measure and record the boiler body temperature while the boiler is running using a thermal imager or a single-point temperature gun. Current temperature measurement methods are limited to measuring the boiler surface. Repairing boiler insulation mainly involves entering the furnace to repair the internal insulation. Current temperature measurement methods cannot accurately locate the hot spots inside the furnace; they can only describe a general area. Repairing this requires replacing the insulation in the entire area, which is time-consuming, cumbersome, and requires significant financial investment.

[0005] The confined space and limited ventilation inside boilers make boiler insulation maintenance a confined space operation. Furthermore, the aluminum silicate insulation material produces dust that can harm workers' respiratory systems. In summary, there is currently a lack of precise technical means to record and indicate the location or area of ​​overheated spots on the boiler surface, making it difficult to provide sufficiently accurate positioning support for boiler internal insulation maintenance.

[0006] Announcement No. CN221350288U discloses an infrared thermometer, including a cylindrical outer cover and a thermometer disposed inside the outer cover and attached to the inner wall of the outer cover. The outer cover has an opening along the axial direction, with one side opening for the thermometer probe to pass through and the other end for the control end face of the thermometer's control part to be exposed. By setting a laser aiming head on the probe, the alignment and adjustment effect is achieved through a visible light spot or optical path, thereby saving space at the tail of the entire cylindrical thermometer structure, making it easier to reduce the size, and moving the wiring head to the tail facilitates uniform isolation of the outer cover.

[0007] The existing technology can only measure in a traditional way, and can only obtain an area where there is a hot spot, which cannot accurately guide boiler maintenance and construction.

[0008] Announcement No. CN221529105U discloses an intelligent temperature control device for an electric heating control system. Under the drive of a lead screw, the positioning frame can slide left and right along the opening direction of the through hole on the surface of the limiting column, thereby driving the temperature sensor on the outside to move left and right, thereby monitoring the surface temperature of the reactor body in real time and preventing excessive internal temperature difference from causing long-term overheating operation and thus damaging the internal equipment.

[0009] This existing technology can be used for scanning boiler surface temperatures, but it cannot accurately indicate the location of hot spots inside the boiler.

[0010] Publication No. CN118391662A discloses a device for establishing a boiler wall-mounted atmosphere temperature field through wall temperature measurement. The device includes a boiler base and a boiler wall temperature monitoring mechanism. A first-pass flue and a second-pass flue are installed inside the boiler body. A high-level water-cooled wall tube and a low-level water-cooled wall tube are installed on the top of the header. One end of the infrared imaging monitoring port is connected to an infrared imager. Multi-point temperature monitoring of the boiler body, high-level water-cooled wall tubes, and low-level water-cooled wall tubes allows for timely adjustment of the combustion position temperature based on statistical data. This ensures uniform flame distribution within the furnace, uniform heat load on each heating surface pipe, and safe and stable unit operation.

[0011] The existing technology can be used to measure the surface temperature of boilers, but setting up a large number of fixed detection points is time-consuming and labor-intensive, and there are gaps between the points, making it impossible to accurately indicate the location of overheating points.

[0012] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of the present invention. Regarding the more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the Invention

[0013] In view of the above-mentioned defects in the existing technology, the purpose of this invention is to provide a device and method for scanning the temperature difference and indicating the coordinates of an oilfield steam injection boiler.

[0014] To achieve the above objectives, the present invention adopts the following technical solution:

[0015] On one hand, the present invention provides a temperature difference scanning and coordinate indication device for an oilfield steam injection boiler, including a scanning device and a coordinate indication device; the scanning device includes a reciprocating scanning bracket, on which a scanning module is fixed; the coordinate indication device includes a projection module, which is used to project the scanning data of the scanning module.

[0016] Furthermore, the reciprocating scanning support includes a multi-stage displacement support and a vertical telescopic support;

[0017] The multi-stage displacement bracket is installed at the top of the telescopic rod of the vertical telescopic bracket, and the moving mechanism of the multi-stage displacement bracket is connected to the scanning module;

[0018] The bottom of the vertical telescopic bracket is connected to the base.

[0019] Furthermore, the multi-stage displacement support includes a primary rail and a secondary rail;

[0020] The primary rail is provided with a primary slide groove. A stepper motor is installed at one end of the primary rail, and an end cover is installed at the other end. The output shaft of the stepper motor is connected to a lead screw, which is located in the primary slide groove and is rotatably connected to the end cover.

[0021] The secondary rail is fixedly equipped with a primary slider, the primary slider is provided with a primary threaded hole with the same direction as the secondary rail, the primary slider cooperates with the primary slide groove, and the lead screw cooperates with the primary threaded hole; the secondary rail is equipped with a moving mechanism.

[0022] Furthermore, the moving mechanism includes a moving box, and a grooved wheel assembly is provided on the end face of the moving box near the secondary rail;

[0023] The grooved wheel assembly includes an upper grooved wheel and a lower grooved wheel. The upper grooved wheel is hooked onto the upper end face of the secondary rail, and the lower end of the secondary rail extends into the lower grooved wheel. Both the upper and lower grooved wheels are rotatably connected to the movable box.

[0024] The movable box is equipped with a movable motor, the output shaft of which extends out of the movable box and is connected to a drive wheel. The drive wheel is in contact with the lower end face of the secondary rail.

[0025] A quick-release fastening bracket is fixedly installed on the end face of the movable box away from the secondary rail, and the quick-release fastening bracket is connected to the scanning module.

[0026] Furthermore, the upper and lower grooved wheels are I-shaped grooved wheels;

[0027] A wheel space is provided between the primary rail and the secondary rail. The upper end of the secondary rail is engaged in the annular groove of the upper grooved wheel, and the lower end of the secondary rail extends into the annular groove of the lower grooved wheel. A wheel-locking space is provided between the secondary rail and the movable box. The wheel space and the wheel-locking space facilitate the installation and movement of the upper and lower grooved wheels.

[0028] Furthermore, a rack is provided on the lower end face of the secondary rail, the drive wheel is a gear, and the gear meshes with the rack; limit plates are fixed at both ends of the secondary rail.

[0029] Furthermore, the vertical telescopic support includes a rectangular outer shell, and a rectangular multi-stage electric telescopic rod is fitted inside the rectangular outer shell;

[0030] The top of the rectangular multi-stage electric telescopic rod is equipped with a C-shaped fixing seat, the multi-stage displacement bracket is connected to the C-shaped fixing seat, and the bottom of the rectangular outer shell is connected to the base.

[0031] Furthermore, the scanning module is fixed to the moving mechanism with a quick-release fastener, and the scanning module is a spherical camera that integrates stereo scanning and thermal imaging.

[0032] Furthermore, the base is a wheeled base, and the head of the wheeled base is equipped with a tow hook and a parking assembly.

[0033] Secondly, the present invention provides a method for using a temperature difference scanning and coordinate indication device for an oilfield steam injection boiler, comprising the following steps:

[0034] S1. Scanning: Mark both sides of the boiler's radiant section. First, stop the wheeled base at the marked position on one side of the radiant section; the reciprocating scanning bracket drives the scanning module to perform reciprocating scanning; after completing the scan, scan the other side of the radiant section.

[0035] S2. After the data scanning is completed, the scanning module performs noise reduction and merging based on the cloud point data coordinates and thermal imaging to achieve three-dimensional mapping.

[0036] S3. Download the 3D thermal imaging map generated by the scanning module to the projection module, install the projection module inside the boiler radiant section at the position corresponding to the mark, and project the 3D image of the boiler's external temperature difference and overheating; the construction personnel formulate a construction plan based on the projection to accurately locate the hot spots and the distribution of overheating areas.

[0037] Further, step S1 includes:

[0038] S101. Scanning preparation: The moving mechanism and secondary rail are moved to the extreme position on one side as the initial scanning position. The vertical telescopic bracket does not move, the stepper motor moves, driving the primary slider and secondary rail to move quickly. At the same time, the drive wheel on the moving mechanism moves quickly, driving the moving mechanism to continue moving until it reaches the extreme position, and each module stops moving.

[0039] S102. Start scanning. The device moves slowly in the opposite direction, following the sequence of first moving mechanism and then stepper motor, driving the scanning module to the limit position on the other side. The scanning module continues to run during the movement.

[0040] S103. After the scan is completed, the vertical telescopic support is raised, and the scan is continued according to step S102 until the vertical telescopic support is raised to the point where the scan on the boiler radiant section is completed.

[0041] S104. Stop the device in the middle position on the other side of the radiation section, and repeat steps S101 to S103 until the scanning of both sides of the boiler radiation section is completed.

[0042] Further, step S3 includes:

[0043] S301. Download the 3D thermal imaging model generated by the scanning module to the projection module. The projection module scales down the model proportionally to make it suitable for projection inside the furnace.

[0044] S302. When the boiler equipment is shut down, after the internal temperature of the furnace drops to a working temperature, the projection module is installed in the center of the boiler's radiant section. The projection module will project 3D images of the boiler's external temperature difference and overheating at a fixed time frequency. Construction personnel can formulate a construction plan based on the projection and accurately locate the hot spots and the distribution of overheating areas.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. This invention is applicable to the establishment of surface temperature records for oilfield steam injection boilers and the construction of internal insulation maintenance, and has advantages such as accurate positioning, convenient use, and reduced labor intensity.

[0047] 2. The scanning device of the present invention uses line-by-line scanning during boiler operation to collect and process 3D model information data of boiler surface temperature and temperature difference. This data can serve as first-hand information for evaluating boiler insulation, helping users to understand changes in boiler insulation. It can also accurately project hot spot information inside the furnace to guide workers in construction, thus solving the problem of inaccurate overall evaluation of boiler insulation and the inability to effectively and continuously track it.

[0048] 3. Under the projection guidance of the projection device, the present invention can detect the initial and small-area overheating points inside the furnace body, thereby formulating targeted small-area maintenance measures to prevent further damage and deterioration of the insulation in the overheated areas. This achieves "preventive" repair of boiler insulation, effectively extends the service life of the boiler insulation, and reduces the safety risk of workers being scalded or burned. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of a furnace body temperature difference scanning and coordinate indication device for an oilfield steam injection boiler according to the present invention;

[0050] Figure 2 This is a schematic diagram of the multi-stage displacement support in this invention;

[0051] Figure 3 This is a schematic diagram of the back structure of the multi-stage displacement bracket in this invention;

[0052] Figure 4 This is a schematic diagram of the moving mechanism in this invention;

[0053] Figure 5 This is a state diagram of the scanning device at a certain moment during scanning in this invention;

[0054] Figure 6 This is a state diagram of the scanning device and the gas injection boiler at a certain moment during scanning in this invention.

[0055] In the diagram: 1. Multi-stage displacement bracket; 2. Vertical telescopic bracket; 3. Wheeled base; 4. Projection module; 5. Primary rail; 6. Secondary rail; 7. Stepper motor; 8. Moving mechanism; 9. Scanning module; 10. Primary slider; 11. Upper grooved wheel; 12. Lower grooved wheel; 13. Drive wheel; 14. Moving box; 15. Fixed arc groove frame; 16. Movable arc groove frame; 17. Locking bolt; 18. Tow hook and parking assembly. Detailed Implementation

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

[0057] Example 1:

[0058] Please see Figures 1 to 5 The present invention provides a temperature difference scanning and coordinate indication device for an oilfield steam injection boiler, comprising a scanning device and a coordinate indication device. The scanning device includes a multi-stage displacement bracket 1, a vertical telescopic bracket 2, and a wheeled base 3. The coordinate indication device includes a projection module 4. The multi-stage displacement bracket 1 is installed at the top of the telescopic rod of the vertical telescopic bracket 2. The moving mechanism 8 of the multi-stage displacement bracket 1 is connected to the scanning module. The bottom of the vertical telescopic bracket 2 is fixedly connected to the surface platform of the wheeled base 3.

[0059] Furthermore, the multi-stage displacement bracket includes a primary rail 5 and a secondary rail 6. The primary rail 5 is provided with a primary slide groove. A stepper motor 7 is provided at one end of the primary rail 5, and an end cap is provided at the other end. The output shaft of the stepper motor 7 is connected to a lead screw, which is located in the primary slide groove and is rotatably connected to the end cap. A primary slider 10 is fixedly provided on the secondary rail 6. The primary slider 10 is provided with a primary threaded hole with the same direction as the secondary rail 6. The primary slider 10 cooperates with the primary slide groove, and the lead screw cooperates with the primary threaded hole. The secondary rail 6 is fitted with a moving mechanism 8.

[0060] Specifically, the stepper motor 7 is used to drive the first-stage slider 10, and the output shaft of the stepper motor 7 is connected to the lead screw through a coupling; when the stepper motor 7 rotates, it drives the lead screw to rotate, thereby driving the first-stage slider 10 to move within the first-stage rail 5.

[0061] Specifically, the lead screw and the end cap are connected by bearings.

[0062] Specifically, a fixing screw hole is provided in the middle of the secondary rail 6, and the primary slider 10 is connected to the fixing screw hole in the middle of the secondary rail 6 by bolts.

[0063] Preferably, the primary slide groove is a T-shaped primary slide groove, and the primary slider 10 is a T-shaped slider.

[0064] Furthermore, the moving mechanism 8 includes a moving box 14. A grooved wheel assembly is provided on the end face of the moving box 14 near the secondary rail 6. The grooved wheel assembly includes an upper grooved wheel 11 and a lower grooved wheel 12. The upper grooved wheel 11 is hooked onto the upper end face of the secondary rail 6, and the lower end of the secondary rail 6 extends into the lower grooved wheel 12 for limiting its position. Both the upper grooved wheel 11 and the lower grooved wheel 12 are rotatably connected to the moving box 14. A moving motor is provided inside the moving box 14, and the output shaft of the moving motor extends out of the moving box 14. The output shaft of the moving motor is connected to a drive wheel 13, which contacts the lower end face of the secondary rail 6. The drive wheel 13 drives the moving mechanism 8, enabling the moving mechanism 8 to move along the secondary rail 6. A quick-release fastening frame is fixedly provided on the end face of the moving box 14 away from the secondary rail 6, and the quick-release fastening frame is connected to the scanning module 9.

[0065] Specifically, the upper grooved wheel 11 and the lower grooved wheel 12 are I-shaped grooved wheels. There is a wheel passage space between the primary rail 5 and the secondary rail 6. The upper end of the secondary rail 6 is inserted into the annular groove of the upper grooved wheel 11, and the lower end of the secondary rail 6 extends into the annular groove of the lower grooved wheel 12. There is a wheel clamping space between the secondary rail 6 and the movable box 14. The wheel passage space and the wheel clamping space facilitate the installation and movement of the upper grooved wheel 11 and the lower grooved wheel 12 and prevent interference.

[0066] Specifically, the upper grooved wheel 11, the lower grooved wheel 12 and the movable box 14 are connected by a rotating shaft. The grooved wheel 11 and the lower grooved wheel 12 are connected to the rotating shaft by bearings or the rotating shaft is connected to the movable box 14 by bearings. Multiple upper grooved wheels 11 and lower grooved wheels 12 can be provided to improve the stability of the moving mechanism.

[0067] Specifically, a rack is provided on the lower end face of the secondary rail 6, and the drive wheel 13 is a gear. The gear meshes with the rack, and displacement is achieved by the rotation of the gear. Using a rack and pinion meshing can reduce the machining accuracy requirements.

[0068] Specifically, the two ends of the secondary rail 6 are fixed with bolts to limit plates to prevent the moving mechanism 8 from coming off.

[0069] Preferably, both the primary rail 5 and the secondary rail 6 are made of aluminum alloy.

[0070] Furthermore, the vertical telescopic support 2 includes a rectangular outer shell, inside which a rectangular multi-stage electric telescopic rod is fitted. The top of the rectangular multi-stage electric telescopic rod is equipped with a C-shaped fixing seat. The multi-stage displacement support 1 is connected to the C-shaped fixing seat. The bottom of the rectangular outer shell is fixedly connected to the surface platform of the wheel base 3. The multi-stage electric telescopic rod itself is prior art and can be an electric telescopic rod, distance detection device and detection method disclosed in publication number CN118089525A.

[0071] Specifically, the C-shaped fixing seat is connected to the middle position of the primary rail 5 by bolts.

[0072] Furthermore, the scanning module 4 is fixed to the moving mechanism 8 with a quick-release fastener. The scanning module 4 itself is existing technology. It is a spherical camera with CCD stereo scanning, thermal imaging, data processing and primary data output functions. It can combine cloud point data coordinates and thermal images in real time to form thermal imaging model data with 3D coordinates.

[0073] Specifically, the quick-release fastening bracket includes a fixed arc groove bracket 15, a movable arc groove bracket 16, and a locking bolt 17. The fixed arc groove bracket 15 is fixedly connected to the movable box 14. The locking bolt 17 moves through the movable arc groove bracket 16, and the bolt head of the locking bolt 17 contacts the movable arc groove bracket 16. The threaded part of the locking bolt 17 is fixedly connected to the fixed arc groove bracket 15. The arc-shaped surface of the fixed arc groove bracket 15 and the arc-shaped surface of the movable arc groove bracket 16 face each other. A fixing post is provided on the top of the scanning module 9. The fixing post is placed between the fixed arc groove bracket 15 and the movable arc groove bracket 16. Tightening the locking bolt 17 locks the fixed arc groove bracket 15 and the movable arc groove bracket 16, clamping the fixing post and completing the fixation of the scanning module 9.

[0074] Furthermore, the wheeled base 3 is equipped with four rubber tires and a tow hook and parking assembly 18 at the head. The tow hook and parking assembly 18 includes a tow hook and a support rod. The tow hook is used for towing, and the support rod is used to insert into the ground for parking.

[0075] Furthermore, the projection module 4 is a projector, which is existing technology, and is used to project the scan data of the scanning module 9.

[0076] Example 2:

[0077] Based on Example 1, this example provides a method for using a temperature difference scanning and coordinate indication device for an oilfield steam injection boiler, including the following steps:

[0078] S1. Scanning: Mark the middle position on both sides of the boiler's radiant section. First, stop the scanning device in the middle position on one side of the radiant section. The middle position is the easiest to match the position outside and inside the boiler, which can ensure the accuracy of subsequent indications.

[0079] S101, Scanning preparation: The moving mechanism 8 and the secondary rail 6 are moved to the extreme position on one side as the initial scanning position. The vertical telescopic bracket 2 does not move, the stepper motor 7 moves, driving the primary slider 10 and the secondary rail 6 to move quickly.

[0080] At the same time, the drive wheel 13 on the moving mechanism 8 moves rapidly, driving the moving mechanism 8 to continue moving until it reaches the limit position, at which point all modules stop moving.

[0081] S102. Start scanning. The device moves slowly in the opposite direction, following the sequence of first moving mechanism 8 and then stepper motor 7, driving scanning module 9 to the limit position on the other side. Scanning module 9 continues to run during the movement.

[0082] S103. After the scan is completed, the vertical telescopic support 2 is raised by about 50cm, and the scan continues according to the steps in S102. The scan of the boiler radiant section is completed when the vertical telescopic support 2 is raised to a maximum of 3.5 meters. Figure 5 , Figure 6 This is a state diagram of the scanning device at a certain moment during the scanning process.

[0083] S104. Stop the device in the middle position on the other side of the radiation section, and repeat steps S101 to S103 until the scanning of both sides of the boiler radiation section is completed.

[0084] S2. Data processing: After the data scanning is completed, the scanning module 9 performs noise reduction and merging based on the cloud point data coordinates and thermal imaging to achieve three-dimensional mapping.

[0085] S3, Use of projection module 4:

[0086] S301. Download the 3D thermal imaging model generated by the scanning module 9 to the projection module 4. The projection module 4 scales down the model proportionally to make it suitable for projection inside the furnace.

[0087] S302. When the boiler equipment is shut down, after the temperature inside the furnace drops to a working temperature, the projection module 4 is installed in the center of the boiler's radiant section. The projection module 4 will project 3D images of the boiler's external temperature difference and overheating at a fixed time frequency. Construction personnel can formulate a construction plan based on the projection and accurately locate the hot spots and the distribution of overheating areas.

[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 invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" 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 invention according to the specific circumstances.

[0090] In the description of this invention, 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 invention 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 invention.

[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 the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for scanning and indicating the temperature difference of an oilfield steam injection boiler body, comprising a scanning device, characterized in that, It also includes a coordinate indicating device; The scanning device includes a reciprocating scanning bracket, and a scanning module is fixed on the reciprocating scanning bracket; The coordinate indicating device includes a projection module, which is used to project the scan data from the scanning module.

2. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 1, characterized in that, The reciprocating scanning support includes a multi-stage displacement support and a vertical telescopic support; The multi-stage displacement bracket is installed at the top of the telescopic rod of the vertical telescopic bracket, and the moving mechanism of the multi-stage displacement bracket is connected to the scanning module; The bottom of the vertical telescopic bracket is connected to the base.

3. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 2, characterized in that, The multi-stage displacement support includes a primary rail and a secondary rail; The primary rail is provided with a primary slide groove. A stepper motor is installed at one end of the primary rail, and an end cover is installed at the other end. The output shaft of the stepper motor is connected to a lead screw, which is located in the primary slide groove and is rotatably connected to the end cover. The secondary rail is fixedly equipped with a primary slider, the primary slider is provided with a primary threaded hole with the same direction as the secondary rail, the primary slider cooperates with the primary slide groove, and the lead screw cooperates with the primary threaded hole; the secondary rail is equipped with a moving mechanism.

4. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 3, characterized in that, The moving mechanism includes a moving box, and a grooved wheel assembly is provided on the end face of the moving box near the secondary rail; The grooved wheel assembly includes an upper grooved wheel and a lower grooved wheel. The upper grooved wheel is hooked onto the upper end face of the secondary rail, and the lower end of the secondary rail extends into the lower grooved wheel. Both the upper and lower grooved wheels are rotatably connected to the movable box. The movable box is equipped with a movable motor, the output shaft of which extends out of the movable box and is connected to a drive wheel. The drive wheel is in contact with the lower end face of the secondary rail. A quick-release fastening bracket is fixedly installed on the end face of the movable box away from the secondary rail, and the quick-release fastening bracket is connected to the scanning module.

5. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 4, characterized in that, The upper and lower grooved wheels are I-shaped grooved wheels; A wheel space is provided between the primary rail and the secondary rail. The upper end of the secondary rail is engaged in the annular groove of the upper grooved wheel, and the lower end of the secondary rail extends into the annular groove of the lower grooved wheel. A wheel-locking space is provided between the secondary rail and the movable box. The wheel space and the wheel-locking space facilitate the installation and movement of the upper and lower grooved wheels.

6. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 4, characterized in that, A rack is provided on the lower end face of the secondary rail, and the drive wheel is a gear that meshes with the rack; limit plates are fixed at both ends of the secondary rail.

7. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 2, characterized in that, The vertical telescopic support includes a rectangular outer shell, and a rectangular multi-stage electric telescopic rod is fitted inside the rectangular outer shell; The top of the rectangular multi-stage electric telescopic rod is equipped with a C-shaped fixing seat, the multi-stage displacement bracket is connected to the C-shaped fixing seat, and the bottom of the rectangular outer shell is connected to the base.

8. The oilfield steam injection boiler body temperature difference scanning and coordinate indication device according to claim 2, characterized in that, The scanning module is fixed to the moving mechanism with a quick-release fastener, and the scanning module is a spherical camera that integrates stereo scanning and thermal imaging.

9. A device for scanning and indicating the temperature difference of an oilfield steam injection boiler body according to any one of claims 1-8, characterized in that, The base is a wheeled base, and the head of the wheeled base is equipped with a tow hook and a parking assembly.

10. A method for using a temperature difference scanning and coordinate indication device for an oilfield steam injection boiler, characterized in that, Includes the following steps: S1. Scanning: Mark both sides of the boiler's radiant section. First, stop the wheeled base at the marked position on one side of the radiant section; the reciprocating scanning bracket drives the scanning module to perform reciprocating scanning. After completing the scan, scan the other side of the radiation segment; S2. After the data scanning is completed, the scanning module performs noise reduction and merging based on the cloud point data coordinates and thermal imaging to achieve three-dimensional mapping. S3. Download the 3D thermal imaging map generated by the scanning module to the projection module, install the projection module inside the boiler radiant section at the position corresponding to the mark, and project the 3D image of the boiler's external temperature difference and overheating; the construction personnel formulate a construction plan based on the projection to accurately locate the hot spots and the distribution of overheating areas.

11. The method of use according to claim 10, characterized in that, Step S1 includes: S101. Scanning preparation: The moving mechanism and secondary rail are moved to the extreme position on one side as the initial scanning position. The vertical telescopic bracket does not move, the stepper motor moves, driving the primary slider and secondary rail to move quickly. At the same time, the drive wheel on the moving mechanism moves quickly, driving the moving mechanism to continue moving until it reaches the extreme position, and each module stops moving. S102. Start scanning. The device moves slowly in the opposite direction, following the sequence of first moving mechanism and then stepper motor, driving the scanning module to the limit position on the other side. The scanning module continues to run during the movement. S103. After the scan is completed, the vertical telescopic support is raised, and the scan is continued according to step S102 until the vertical telescopic support is raised to the point where the scan on the boiler radiant section is completed. S104. Stop the device in the middle position on the other side of the radiation section, and repeat steps S101 to S103 until the scanning of both sides of the boiler radiation section is completed.

12. The method of use according to claim 10, characterized in that, Step S1 includes: Step S3 includes: S301. Download the 3D thermal imaging model generated by the scanning module to the projection module. The projection module scales down the model proportionally to make it suitable for projection inside the furnace. S302. When the boiler equipment is shut down, after the internal temperature of the furnace drops to a working temperature, the projection module is installed in the center of the boiler's radiant section. The projection module will project 3D images of the boiler's external temperature difference and overheating at a fixed time frequency. Construction personnel can formulate a construction plan based on the projection and accurately locate the hot spots and the distribution of overheating areas.

Images