Integrated vehicle-mounted steam-injection boiler with high maneuvering characteristics and using method thereof

Abstract

The invention provides an integrated vehicle-mounted steam-injection boiler with high maneuvering characteristics and a using method of the integrated vehicle-mounted steam-injection boiler. The integrated vehicle-mounted steam-injection boiler comprises a steam-injection boiler pressed assembly, an auxiliary system and a carrying tool, and the steam-injection boiler pressed assembly and the auxiliary system are arranged on the carrying tool; and the carrying tool is used for driving the steam-injection boiler compression assembly and the auxiliary system to move. The components are integrally arranged, so that the vehicle-mounted steam injection boiler can form a complete independent working unit from water supply to steam production, the dismounting workload in the steam injection transition and movement process is reduced, a carrying tool with a good suspension system is adopted, and the vehicle-mounted steam injection boiler is convenient to use. And the vehicle-mounted steam-injection boiler has good field driving capability and maneuverability.

Description

Technical Field

[0001] The invention belongs to the technical fields of boiler structure, special vehicles, automatic control, and steam injection technology for heavy oil recovery in oil fields, and particularly relates to an integrated vehicle-mounted steam injection boiler with high mobility and its usage method. Background Art

[0002] Heavy oil recovery mainly adopts the steam injection thermal recovery process using a steam injection boiler. As one of the special steam injection equipment and core equipment for heavy oil recovery, the steam injection boiler belongs to a new type of high-pressure boiler. The forms of the steam injection boiler device mainly include fixed, vehicle-mounted, and skid-mounted, and the fuels are mainly coal, heavy oil or residue oil, and gas. In domestic oil fields, fixed-station steam injection boilers mainly using coal as fuel are widely used for steam injection, followed by skid-mounted steam injection boilers using heavy oil or residue oil and natural gas, and a small number of vehicle-mounted steam injection boilers. Fixed-station steam injection boilers have the advantages of being easy to carry out large-load and continuous gas injection operations, and relatively low operating costs. However, they have the disadvantages of relatively high initial construction costs, long on-site installation and construction periods, and relatively low steam injection effects. Skid-mounted and vehicle-mounted steam injection boiler units have the advantages in terms of external dimensions and quality, such as fast movement and adaptability to small and scattered well sites, effectively overcoming the steam injection problems in remote and scattered well sites.

[0003] Fuel and gas steam injection boilers generally mainly include vehicle-mounted steam injection boilers with a rated evaporation capacity of less than 23t / h and skid-mounted steam injection boilers with a maximum rated evaporation capacity of up to 100t / h. The skid-mounted steam injection boiler is similar to the vehicle-mounted steam injection boiler in composition. It arranges the boiler main body, its auxiliary equipment, fuel system, steam-water system, etc. on one or more skid bases, and is formed into a skid through prefabricated installation in the factory, thus reducing the on-site fabrication and installation workload. Skid-mounted and vehicle-mounted steam injection boilers have good mobility and transfer characteristics and play an important role in the heavy oil thermal recovery process. However, their re-movement or transfer requires a large amount of work. For large skid-mounted steam injection boilers, due to the limitations of their external dimensions and their own transportation weights, some equipment needs to be disassembled during the movement and transfer of the unit, and additional vehicles are required for transportation. The complexity and difficulty are still the biggest problems faced during the transportation process.

[0004] Traditional vehicle-mounted steam injection boilers usually install equipment on the chassis of ordinary flatbed trucks, and combine and arrange the radiant section of the steam injection boiler, its combustion device, convection section, feed water pump, air compressor, feed water heater, fuel heater, steam-water separator, control cabinet, etc. The transportation vehicles use ordinary 2-axle or 3-axle ordinary flatbed trucks, which limit the integration of various components of the steam injection boiler and the improvement of the boiler's rated evaporation capacity, and it has been difficult to meet the needs of oil field thermal recovery. Moreover, the rated steam energy of traditional vehicle-mounted steam injection boilers is relatively small, and affected by transportation tools and traffic conditions, the integration of various parts and the mobility of the transport vehicle still need to be further improved.

[0005] As one of the special steam injection equipment and core equipment for heavy oil exploitation, truck-mounted steam injection boilers have received extensive attention in the field of energy development and utilization. When injecting steam for heavy oil thermal recovery in oilfields, the truck-mounted steam injection boilers need to be able to quickly reach the steam injection site and quickly implement the steam injection work. Facing various complex road conditions and operating environments in oilfields, the transportation vehicles of truck-mounted steam injection boilers must have good off-road driving ability and mobility, which puts forward higher performance requirements for the vehicle chassis and suspension system.

[0006] Most of the transportation vehicles of traditional truck-mounted steam injection boilers adopt passive suspension structures. Such passive suspension structures cannot adjust the suspension parameters according to the state of the transportation vehicle and driving conditions, making it difficult to ensure the driving smoothness and stability of existing transportation vehicles, and severely restricting their off-road driving ability and mobility. The active suspension system can obtain the state of the transportation vehicle and road surface information through sensors, and use the controller to adjust the output energy of the actuator in real time to offset the road surface impact, ensuring the stability and smoothness of the transportation vehicle during off-road driving, which can effectively make up for the deficiencies of the passive suspension system and meet the high mobility requirements of truck-mounted steam injection boilers. The vibration and impact of truck-mounted steam injection boilers mainly come from the high-speed flow of steam, the resonance between gas combustion and the shell, the vibration and impact of dynamic equipment and its associated components, etc. The vibration and impact of on-vehicle equipment have great randomness and unpredictability during the operation and transportation of the device, so the goodness of the vibration isolation and shock absorption mechanism of the vehicle and equipment is particularly important. Therefore, having a good vibration isolation and shock absorption mechanism and its stability becomes the basic requirement for improving the mobility of truck-mounted steam injection boilers.

[0007] Based on the above factors, it is necessary to develop a highly mobile and integrated steam injection boiler to overcome the existing deficiencies of steam injection boilers. The present invention relates to a highly mobile and integrated truck-mounted steam injection boiler, which relies on the relatively high mobility and stability of the transportation vehicle, and highly integrates each component of the steam injection boiler with the transportation vehicle or mobile device, and can effectively overcome the space condition limitations during movement, making it have good passability and mobility. Summary of the Invention

[0008] In view of this, the present invention aims to propose a highly mobile integrated truck-mounted steam injection boiler and its usage method to solve at least one problem in the background technology.

[0009] To achieve the above object, the technical solution of the present invention is realized as follows:

[0010] A highly mobile integrated truck-mounted steam injection boiler includes a steam injection boiler pressure-receiving component, an auxiliary system, and a transportation vehicle. The steam injection boiler pressure-receiving component and the auxiliary system are arranged on the transportation vehicle; the transportation vehicle is used to drive the steam injection boiler pressure-receiving component and the auxiliary system to move.

[0011] Further, the pressurized components of the steam injection boiler include a steam injection boiler radiant section component, a superheat heat exchange section component, a convection heat exchange section component, an economizer component, a feed water heating component, a burner component, a fuel pipeline component, a spherical separator component, a control circuit component, a plunger pump component, and an air compressor component; the pressurized components of the steam injection boiler are connected by a water vapor pipeline.

[0012] Further, the feed water heating component is installed at the top or side position of the steam injection boiler radiant section component, the superheat heat exchange component is installed at the tail position of the steam injection boiler radiant section component, the convection heat exchange section component is installed above the superheat heat exchange component, the economizer component is installed above the convection heat exchange section component, and the spherical separator component is arranged at the tail position of the vehicle.

[0013] Further, the steam injection boiler radiant section component is of a horizontal cylindrical structure, the superheat heat exchange section component is of a box structure, and its tube bundle is a single-pass tube bundle. The control circuit component is arranged in the left space at the bottom of the vehicle platform. The burner component is connected to the center of the front panel of the steam injection boiler radiant section component, and a flue gas circulation area is set at its rear opening. The fuel pipeline component is arranged in the right space at the bottom of the vehicle platform, and the plunger pump component and the air compressor component are arranged at the gooseneck part of the vehicle.

[0014] Further, the steam injection boiler radiant section component includes a horizontal cylindrical serpentine tube structure. An axially fixed refractory insulation layer is provided inside the radiant section component. The insulation layer fixes the radiant heat exchange tube bundle through high-temperature pipe clamps. The radiant heat exchange tube bundle is composed of multiple furnace tubes arranged circumferentially. Adjacent radiant furnace tubes are welded with ° elbows to form head-to-tail connection, constituting a single-pass serpentine tube bundle.

[0015] Further, the circuit module is composed of a power distribution cabinet, a PLC control cabinet, and a frequency conversion cabinet. The burner component is composed of a burner, a solenoid valve, a cut-off valve, a flame adjustment system, and a flame detection system. The fuel pipeline valve group is composed of a flow meter, a pressure switch, a pressure gauge, a pressure transmitter, and valves. The feed water heater component is a jacketed feed water heat exchanger.

[0016] Further, the vehicle includes a trailer, including a trailer tray, a suspension and shock absorption mechanism, and a running and braking system;

[0017] The running and braking system is connected to the suspension and shock absorption mechanism through electric and pneumatic modes. The longitudinal beams under the trailer tray are connected to each cross beam by welding, which is used to set the pressurized components of the boiler and its auxiliary system components. A towing link mechanism for the vehicle is provided at the front section of the trailer tray of the trailer.

[0018] Further, this solution discloses a usage method of an integrated vehicle-mounted steam injection boiler with high maneuverability. According to an integrated vehicle-mounted steam injection boiler with high maneuverability, it includes the following steps:

[0019] S1. The boiler feed water pump extracts softened water from the water tank to the plunger pump of the steam injection boiler;

[0020] S2. After the plunger pump pressurizes to the boiler feed water pressure, the high-pressure boiler feed water enters the inner tube of the feed water heater for heat exchange;

[0021] S3. After the high-pressure boiler feed water is preheated by the preheater, it enters the preheating section of the boiler to raise the temperature, and then enters the outer tube of the feed water heater from the outlet of the preheating section to heat the softened water. After heat exchange, the water temperature decreases and directly enters the radiant section of the steam injection boiler;

[0022] S4. The boiler feed water flows through all the furnace tubes in series in the radiant section of the steam injection boiler in sequence, and then generates high-pressure steam and enters the spherical separator. Finally, high-temperature wet saturated steam with a dryness of 85%-100% is generated and transported to the wellhead through the steam injection pipeline to achieve the purpose of oil displacement and supplementing formation pressure;

[0023] S5. The fuel burns in the closed space of the boiler radiant section as a combustion chamber through the burner, releases heat with a high heat load, and transfers heat to the water in the furnace tube through radiation;

[0024] S6. The heat of the flue gas passes through the transition section after heat exchange in the radiation chamber, enters the vertical convection heat exchange section after passing through the superheat heat exchange section, and countercurrently flushes the finned tubes arranged vertically for sufficient heat exchange, and finally is discharged into the atmosphere through the chimney;

[0025] S7. When the flue gas enters the box body from the air inlet, it flushes and exchanges heat with the reverse heat exchange fins upward, and then enters the chimney through the air guiding opening and the air outlet;

[0026] S8. The control module adopts a centralized intelligent control system, which is mainly composed of a PLC controller, a touch screen, a combustion controller and electrical components, as well as modules related to real-time monitoring and control during the operation process.

[0027] Further, in step S2, the amount of preheated water is adjusted through a manual valve to adjust the water temperature at the outlet of the feed water heater.

[0028] Compared with the prior art, the integrated vehicle-mounted steam injection boiler with high maneuverability described in the present invention has the following advantages:

[0029] 1. The present invention integrates components such as combustion, water supply, heat exchange, and separator on a trailer, and arranges the above components in an integrated manner, enabling the vehicle-mounted steam injection boiler to form a complete independent working unit from water supply to steam output, reducing the disassembly workload during transfer and movement, having strong mobility, high reuse rate, and being convenient for installation and commissioning.

[0030] 2. The present invention adopts a cylindrical serpentine tube structure for the boiler radiation section. The radiation furnace tubes are connected by welding through 180° elbows. The overall radiation heating surface adopts a membrane water wall structure, optimizing the structural form of the radiation section of the steam injection boiler. This membrane water wall effectively expands the radiation heating area, has a more compact structure, enables the radiation chamber to have good sealing performance, significantly reduces the air leakage coefficient of the furnace, improves the combustion condition in the furnace, and effectively reduces the thickness of refractory and insulation plates laid outside the furnace and the steel consumption.

[0031] 3. By means of three-dimensional technology and other means, an integrated design is carried out for the pressure-bearing components of the steam injection boiler. The additional convection section after the integration of the steam boiler body can be respectively arranged on the left, right, and upper parts of the radiation section, effectively expanding and utilizing the space, and making the main part of the boiler more compact. The flue gas adopts a heat transfer technology method of radiation plus multi-pass horizontal flushing of the tube bundle, effectively increasing the flue gas flow velocity and the number of passes of flushing the furnace tubes, thereby improving the heat transfer effect.

[0032] 4. By means of three-dimensional technology and other means, an optimized integration is carried out for the pressure-bearing components of the boiler and the carrier vehicle, effectively utilizing the space utilization rate of the carrier vehicle, organically combining the boiler auxiliary system with the carrier vehicle, effectively utilizing the space structure of the carrier vehicle to achieve a high degree of integration of the auxiliary system and the vehicle, and centrally arranging the water supply system, machine pump, instrument control system, steam-water separation system, pipelines, etc. related to the boiler on both sides of the chassis at the front, middle, and rear positions of the vehicle.

[0033] 5. The carrier vehicle of the present invention adopts a 3-axle or 6-axle heavy-duty semi-trailer, and is configured with a carrier vehicle with integrated driving and traveling functions, effectively reducing the purchase and use costs of the vehicle-mounted steam injection boiler. With an active or semi-active suspension system and an air spring type shock absorption mechanism, the traveling motion state of the carrier vehicle can be adaptively adjusted according to the road surface condition, enabling the device to have good passability, ride comfort, handling stability, and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0035] Figure 1 is the front view of the main structure of the present invention;

[0036] Figure 2 is the top view in the present invention; Figure 1 of the present invention;

[0037] Figure 3 is the right view in the present invention; Figure 1 of the present invention;

[0038] Figure 4 is the right view in the present invention; Figure 3 of the present invention;

[0039] Figure 5 is the serpentine tube bundle diagram of the radiant heating surface of the present invention;

[0040] Figure 6 is the side view in the present invention; Figure 5 of the present invention;

[0041] Figure 7 is the partial view in the present invention; Figure 5 of the present invention;

[0042] Figure 8 is the top view in the present invention; Figure 7 of the present invention;

[0043] Figure 9 is the flattened projection view in the present invention; Figure 7 of the present invention;

[0044] Figure 10 is the straight structure diagram of the feed water heater of the present invention;

[0045] Figure 11 is the curved surface structure diagram of the feed water heater of the present invention;

[0046] Figure 12 is the front view of the vehicle of the present invention

[0047] Figure 13 in the present invention Figure 12 is the top view;

[0048] Figure 14 is the left view in the present invention; Figure 12 of the present invention;

[0049] Figure 15 is the suspension and shock absorption assembly diagram in the present invention; Figure 11 of the present invention;

[0050] Figure 16 is the front view in the present invention; Figure 15 of the present invention;

[0051] Figure 17 is the left view in the present invention; Figure 16 of the present invention;

[0052] Figure 18 is the present inventionFigure 15 Top view.

[0053] Description of the reference numerals in the drawings:

[0054] 1 - Plunger pump assembly; 2 - Vehicle; 201 - Trailer connection mechanism; 202 - Trailer gooseneck; 203 - Support mechanism; 204 - Telescopic step; 205 - Toolbox; 206 - Auxiliary system shelter box; 207 - Suspension and shock absorption mechanism; 2071 - Guide bracket assembly; 2072 - Axle adapter assembly; 2073 - Air suspension assembly; 2074 - Height adjustment assembly; 2075 - Shock absorber assembly; 1501 - Left guide arm bracket; 1502 - Adjusting device; 1503 - Guide arm; 1504 - Left air spring lower bracket; 1505 - Left axle adapter seat assembly; 1506 - Shock absorber; 1507 - Right guide arm bracket; 1508 - Axle adapter seat assembly; 1509 - Right air spring lower bracket; 1510 - Air spring upper cover plate; 1511 - Air spring; 1512 - Height valve bracket; 1513 - Height valve; 1514 - Height valve connecting rod; 1515 - Under-bridge cover plate assembly; 1516 - Left bracket brace plate; 1517 - Right bracket brace plate; 208 - Driving and braking system; 210 - Trailer panel; 211 - Girder structure; 215 - Warning sign; 216 - Driving lamp; 217 - Warning lamp; 218 - Toolbox; 219 - Wheel set; 3 - Fan; 4 - Control cabinet; 5 - Burner assembly; 6 - Fuel pipeline assembly; 7 - Fuel preheater assembly; 8 - Radiation section assembly; 801 - Horizontal cylindrical serpentine tube bundle; 802 - Fins; 803 - Radiation section housing; 804 - Radiation section thermal insulation support; 805 - Refractory insulation layer; 806 - Radiation cylinder flange; 807 - High-temperature pipe clamp; 808 - High-temperature pipe support; 9 - Superheat heat exchange section assembly; 10 - Safety valve; 11 - Convection heat exchange section assembly; 12 - Economizer assembly; 13 - Spherical separator assembly; 14 - Chimney; 15 - Air compressor assembly; 16 - Fuel filter assembly; 17 - Feed water heater assembly; 1701 - Outer pipe elbow; 1702 - Reducing socket; 1703 - Inlet nozzle; 1704 - Outlet nozzle; 1705 - Outer pipe; 1706 - Inner pipe; 1707 - Inner pipe elbow; 18 - Control circuit assembly; 19 - Steam-water pipeline assembly. Detailed implementation manners

[0055] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0056] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0057] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0058] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0059] Combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 In this embodiment, an integrated vehicle-mounted steam injection boiler with high maneuverability is disclosed, which includes a vehicle carrier and a steam injection boiler pressure-bearing assembly and its auxiliary systems. The steam injection boiler radiation section assembly 8, superheat heat exchange section assembly 9, convection heat exchange section assembly 11, economizer assembly 12, feed water heating assembly 17, burner assembly 5, fuel pipeline assembly 6, spherical separator assembly 13, control circuit assembly 18, plunger pump assembly 1, air compressor assembly 15, etc. in the steam injection boiler pressure-bearing assembly are all arranged on the trailer 2, and the steam injection boiler pressure-bearing assemblies are connected by a water-vapor pipeline 19. The feed water heating assembly 17 is installed at the top or side position of the steam injection boiler radiation section assembly 8, the superheat heat exchange assembly 9 is installed at the tail position of the steam injection boiler radiation section assembly 8, the convection heat exchange section assembly 11 is installed above the superheat heat exchange assembly 3, the economizer assembly 12 is installed above the convection heat exchange section assembly 11, and the spherical separator assembly 13 is arranged at the tail position of the carrier.

[0060] The steam injection boiler radiant section assembly 8 is of a horizontal cylindrical structure, the superheat heat exchange section assembly 9 is of a box structure, its tube bundle is a single-pass tube bundle, the control circuit assembly 18 is arranged in the left space at the bottom of the vehicle platform, the burner assembly 5 is connected to the center of the front panel of the steam injection boiler radiant section assembly 8, and the rear opening is set as a flue gas circulation area. The fuel pipeline assembly 6 is arranged in the right space at the bottom of the vehicle platform, and the plunger pump assembly 1 and the air compressor assembly 15 are arranged at the gooseneck part of the semi-trailer 2.

[0061] The steam injection boiler radiant section assembly 8 and the convection section are integrally designed and arranged. At the tail, the steam injection boiler radiant section assembly 8, the superheat heat exchange assembly 3, the flow heat exchange section assembly 11, and the economizer assembly 12 are integrally designed and arranged. The convection heat exchange section assembly 11 is installed above the superheat heat exchange assembly 3, the economizer assembly 12 is installed above the convection heat exchange section assembly 11, and the spherical separator assembly 12 is arranged at the tail of the vehicle.

[0062] Combined with Figure 5 and Figure 6 , the steam injection boiler radiant section assembly 8 includes a horizontal cylindrical serpentine tube structure 801. An axially fixed refractory insulation layer 805 is provided inside the radiant section assembly 8. The refractory insulation layer 805 fixes the radiant heat exchange tube bundle 801 through high-temperature pipe clamps 806. The radiant heat exchange tube bundle 801 is composed of multiple furnace tubes arranged circumferentially. Adjacent radiant furnace tubes are welded with 180° elbows to form head-to-tail connections, constituting a single-pass serpentine tube bundle.

[0063] Combined with Figure 7 , Figure 8 , Figure 9 , the heat transfer surface of the radiant heat exchange tube bundle 801 adopts a membrane water wall structure. The optimization of this membrane water wall radiant heat exchange tube bundle 801 heat transfer surface structure effectively expands the radiant heat transfer area, the structure is also more compact, makes the radiant chamber have good sealing performance, significantly reduces the air leakage coefficient of the furnace, improves the combustion condition in the furnace, and effectively reduces the thickness of the refractory and insulation boards laid outside the furnace and the steel consumption.

[0064] The circuit module is composed of a power distribution cabinet, a PLC control cabinet, and a frequency conversion cabinet. The burner assembly 5 is composed of a burner, a solenoid valve, a cut-off valve, a flame adjustment system, and a flame detection system. The fuel pipeline valve group 6 is composed of a flow meter, a pressure switch, a pressure gauge, a pressure transmitter, and valves. The feed water heater assembly 17 is a jacketed feed water heat exchanger. Example 4, combined with Figure 10 and Figure 11 , the feed water heater assembly 17 can adopt a planar structure or a curved surface structure according to the structural type of the radiant chamber.

[0065] Combined with Figure 12 ,Figure 13 , Figure 14 and Figure 15 , the vehicle consists of a trailer 2, a suspension and shock absorption mechanism 207, and a driving and braking system 208. The driving and braking system 208 is connected to the suspension and shock absorption mechanism 207 in electric and pneumatic modes. The longitudinal beams under the trailer 2 are connected to each cross beam by welding, which is used to set the boiler pressure-bearing components and their auxiliary system components. A towing link mechanism for the vehicle is provided at the front section of the trailer tray of the trailer. During transportation or transfer, only the towing link mechanism at the front end of the trailer needs to be connected to the vehicle.

[0066] Combined with Figure 12 , Figure 13 , Figure 14 and Figure 15 , the trailer link mechanism 201, trailer gooseneck 202, support mechanism 203, retractable step 204, toolbox 205, auxiliary system shelter box 206, trailer panel 210, girder structure 211, warning sign 215, driving light 216, warning light 217, toolbox 218 of the trailer 2, the suspension and shock absorption mechanism 207, and the driving and braking system 208 include the first wheel set, the second wheel set, and the third wheel set under the trailer 2. During transportation or transfer, the suspension and shock absorption mechanism and the driving and braking system of the trailer are connected to the control system of the vehicle. This embodiment discloses a usage method of an integrated vehicle-mounted steam injection boiler with high maneuverability, which specifically includes the following steps:

[0067] Step S1: Connect and fix the towing link mechanism at the front end of the trailer to the vehicle.

[0068] Step S2: Connect the control lines of the suspension and shock absorption mechanism and the driving and braking system of the trailer to the control system of the vehicle.

[0069] Example 7, combined with Figures 1 to 11 , this embodiment discloses a usage method of an integrated vehicle-mounted steam injection boiler with high maneuverability, which specifically includes the following steps:

[0070] Step S1: The boiler feed pump extracts softened water from the water tank to the steam injection boiler plunger pump.

[0071] Step S2: After the plunger pump pressurizes to the boiler feed water pressure, the high-pressure boiler feed water enters the heat exchange inner tube of the feed water heater for heat exchange. In this process, the preheated water volume can be adjusted through a manual valve to adjust the water temperature at the outlet of the feed water heater.

[0072] Step S3: After the high-pressure boiler feed water exchanges heat in the preheater, it enters the preheating section of the boiler to increase the temperature, and then enters the outer pipe of the feed water heater from the outlet of the preheating section to exchange heat with the softened sewage. After heat exchange, the water temperature decreases and it directly enters the radiant section of the steam injection boiler;

[0073] Step S4: The boiler feed water flows through all the furnace tubes connected in series in the radiant section of the steam injection boiler in sequence, then generates high-pressure steam and enters the spherical separator, and finally generates high-temperature wet saturated steam with a dryness of 85% - 100%. It is transported to the wellhead through the steam injection pipeline to achieve the purpose of oil displacement and supplementing formation pressure;

[0074] Step S6: The fuel burns in the closed space of the cylindrical membrane wall radiant tube bundle as the combustion chamber through the burner, and the released heat is transferred to the water in the furnace tube by radiation;

[0075] Step S6: The heat of the flue gas passes through the transition section after heat exchange in the radiation chamber, enters the vertical convection heat exchange section after passing through the superheat heat exchange section, and flows countercurrently to scour the finned tubes arranged vertically for sufficient heat exchange, and finally is discharged into the atmosphere through the chimney;

[0076] Step S7: When the flue gas enters the box body from the air inlet, it collides and exchanges heat with the reverse heat exchange fins upward, and then enters the chimney through the air guiding opening and the air outlet;

[0077] Step S8: The control adopts a centralized intelligent control system, which is mainly composed of a PLC controller, a touch screen, a combustion controller and electrical components, as well as modules related to real-time monitoring and control during the operation process.

[0078] Combined with Figure 15 , Figure 16 , Figure 16 and Figure 17 , the suspension and shock absorption mechanism 207 is composed of a guide bracket assembly 2071, an axle adapter assembly 2072, an air suspension assembly 2073, a height adjustment assembly 2074, a shock absorption device assembly 2075, etc.

[0079] The suspension and shock absorption mechanism 207 is composed of a left guide arm bracket 1501, an adjustment device 1502, a guide arm 1503, a left air spring lower bracket 1504, a left axle adapter seat assembly 1505, a shock absorber 1506, a right guide arm bracket 1507, a right axle adapter seat assembly 1508, a right air spring lower bracket 1509, an air spring upper cover plate 1510, an air spring 1511, a height valve bracket 1512, a height valve 1513, a height valve connecting rod 1514, a bridge lower cover plate assembly 1515, a left bracket diagonal brace plate 1516, a right bracket diagonal brace plate 1517, etc.

[0080] Combined with Figure 1 , Figure 2 , Figure 3 andFigure 4 With Figure 12 、 Figure 13 、 Figure 14 After the integration of each pressure-bearing component of the steam injection boiler and its auxiliary system with the carrier vehicle, through further packaging and functional upgrading of the device, a pump and control room, a burner component integration room, a boiler radiant heat exchange section component, a pipeline and instrument control cable integration section, a convective heat exchange section and a steam-water separator component section are respectively formed.

[0081] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated vehicle-mounted steam injection boiler with high maneuverability, characterized in that, It includes a steam injection boiler pressure-bearing component, an auxiliary system, and a carrier vehicle. The steam injection boiler pressure-bearing component and the auxiliary system are arranged on the carrier vehicle; The carrier vehicle is used to drive the steam injection boiler pressure-bearing component and the auxiliary system to move.

2. The integrated vehicle-mounted steam injection boiler with high maneuverability according to claim 1, characterized in that: The steam injection boiler pressure-bearing component includes a steam injection boiler radiant section component, a superheat heat exchange section component, a convective heat exchange section component, an economizer component, a feed water heating component, a burner component, a fuel pipeline component, a spherical separator component, a control circuit component, a plunger pump component, and an air compressor component; The steam injection boiler pressure-bearing components are connected by a water vapor pipeline.

3. The integrated on-vehicle steam injection boiler with high maneuverability according to claim 2, characterized in that: The feed water heating component is installed at the top or side of the steam injection boiler radiant section component. The superheat heat exchange component is installed at the end of the steam injection boiler radiant section component. The convective heat exchange section component is installed above the superheat heat exchange component. The economizer component is installed above the convective heat exchange section component. The spherical separator component is arranged at the tail of the carrier vehicle.

4. The integrated vehicle-mounted steam injection boiler with high maneuverability according to claim 3, characterized in that: The steam injection boiler radiant section component is a horizontal cylindrical structure. The superheat heat exchange section component is a box structure, and its tube bundle is a single-pass tube bundle. The control circuit component is arranged in the left space at the bottom of the carrier vehicle platform. The burner component is connected to the center of the front panel of the steam injection boiler radiant section component. The flue gas circulation area is set at its rear opening. The fuel pipeline component is arranged in the right space at the bottom of the carrier vehicle platform. The plunger pump component and the air compressor component are arranged at the gooseneck part of the carrier vehicle.

5. An integrated on-vehicle steam injection boiler with high maneuverability according to claim 4, characterized in that: The steam injection boiler radiant section component includes a horizontal cylindrical serpentine tube structure. A refractory insulation layer is axially fixed inside the radiant section component. The insulation layer fixes the radiant heat exchange tube bundle through high-temperature pipe clamps. The radiant heat exchange tube bundle is composed of multiple furnace tubes arranged circumferentially. Adjacent radiant furnace tubes are welded with ° elbows to form head-to-tail connections, constituting a single-pass serpentine tube bundle.

6. The integrated on-vehicle steam injection boiler with high maneuverability according to claim 5, characterized in that: The circuit module is composed of a power distribution cabinet, a PLC control cabinet, and a frequency conversion cabinet. The burner component is composed of a burner, a solenoid valve, a cut-off valve, a flame adjustment system, and a flame detection system. The fuel pipeline valve group is composed of a flow meter, a pressure switch, a pressure gauge, a pressure transmitter, and valves. The feed water heater component is a jacketed feed water heat exchanger.

7. The integrated on-vehicle steam injection boiler with high maneuverability according to claim 6, characterized in that: The carrier vehicle includes a trailer, including a trailer tray, a suspension and shock absorption mechanism, and a running and braking system; The running and braking system is connected to the suspension and shock absorption mechanism through electric and pneumatic modes. The longitudinal beams under the trailer tray are connected to each cross beam by welding, and are used to set the boiler pressure-bearing component and its auxiliary system components. A towing link mechanism for the carrier vehicle is provided at the front section of the trailer tray of the trailer.

8. A method for using an integrated vehicle-mounted steam injection boiler with high maneuverability, which is an integrated vehicle-mounted steam injection boiler with high maneuverability according to any one of claims 1-7, characterized in that, It includes the following steps: S1. The boiler feed water pump extracts softened water from the water tank to the steam injection boiler plunger pump; S2. After the plunger pump pressurizes to the boiler feed water pressure, the high-pressure boiler feed water enters the inner tube of the feed water heater for heat exchange; S3. After the high-pressure boiler feed water is heat-exchanged through the preheater, it enters the preheating section of the boiler to raise the temperature, and then enters the outer tube of the feed water heater from the outlet of the preheating section to heat-exchange the softened water. The water temperature after heat exchange decreases and directly enters the steam injection boiler radiant section; S4. The boiler feed water flows through all the furnace tubes connected in series in the radiant section of the steam injection boiler in sequence, then generates high-pressure steam and enters the spherical separator, and finally generates high-temperature wet saturated steam with a dryness of 85%-100%, which is transported to the wellhead through the steam injection pipeline to achieve the purposes of oil displacement and formation pressure supplementation. S5. The fuel burns in the closed space of the boiler radiant section as a combustion chamber through the burner, releases heat with a high heat load, and transfers the heat to the water in the furnace tubes through radiation. S6. The heat exchange in the radiation chamber passes through the transition section. After the flue gas heat passes through the superheat heat exchange section, it enters the vertical convection heat exchange section, countercurrently flushes the finned tubes arranged vertically for sufficient heat exchange, and finally is discharged into the atmosphere through the chimney. S7. When the flue gas enters the box from the air inlet, it flushes and exchanges heat with the reverse heat exchange fins upward, and then enters the chimney through the gas guiding openings and the air outlet. S8. The control module adopts a centralized intelligent control system, which is mainly composed of a PLC controller, a touch screen, a combustion controller and electrical components, as well as modules related to real-time monitoring and control during the operation process.

9. An integrated on-vehicle steam injection boiler with high maneuverability according to claim 8, characterized in that: In step S2, the amount of preheated water is adjusted through the manual valve to adjust the water temperature at the outlet of the feed water heater.

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