Dual-purpose prying boiler integrated heating device

Abstract

The present application relates to the technical field of boiler integrated heat supply, and discloses a gas-electric dual-purpose skid-mounted boiler integrated heat supply device, which comprises a heating furnace body, an oil inlet end and an oil outlet end fixedly communicated with the heating furnace body, and a water inlet and a water outlet fixedly communicated with the heating furnace body; a start motor drives a reciprocating screw rod to rotate; a sleeve ring reciprocates along the screw rod shaft; each push ring is driven to synchronously slide up and down along the outer wall of a vertical smoke pipe; the inner edge of the push ring always keeps sliding contact with the outer wall of the smoke pipe; in the process of reciprocating sliding, the push ring can continuously scrape off the scale layer adhered to the outer surface of the vertical smoke pipe, effectively inhibits the accumulation and thickening of the scale on the heat exchange surface of the smoke pipe, thereby avoiding the attenuation of the heat transfer efficiency caused by the increase of the scale layer thermal resistance, keeping the apparent heat transfer coefficient between the vertical smoke pipe and the water medium stable in long-term operation, significantly prolonging the efficient operation period of the heating furnace body under the condition of no cleaning, and reducing the excessive consumption of fuel caused by scaling.

Description

Technical Field

[0001] This invention relates to the field of integrated boiler heating technology, specifically to a skid-mounted integrated heating device for both gas and electricity power. Background Technology

[0002] During crude oil extraction, crude oil in the reservoir is subjected to high temperature and high pressure environment of the formation. Under formation conditions, it is a liquid that is easy to flow. However, after crude oil is extracted to the surface, the surface temperature is much lower than the formation temperature, and the temperature of crude oil drops sharply. Its viscosity increases exponentially and its fluidity deteriorates significantly. Especially in the cold regions of northern my country and in the production blocks of heavy oil and high-pour-point oil, crude oil is very prone to solidification and wax precipitation during pipeline transportation from the wellhead to the gathering and transportation station, which can block the pipeline and prevent normal gathering and transportation. Therefore, it is necessary to install heating equipment at the wellhead or in the gathering and transportation station to heat up the produced fluid and reduce its viscosity, so as to ensure that the crude oil is transported to the joint station with suitable fluidity for subsequent dehydration, stabilization and other processing procedures.

[0003] Currently, heating furnaces in oilfield single wells and gathering and transportation stations are core auxiliary equipment in the crude oil extraction, production and transportation process. Among them, traditional heating equipment, represented by water jacket heating furnaces, has long dominated the oilfield single well heating market due to its simple structure, low cost and convenient operation. A typical water jacket heating furnace uses associated gas from the oilfield or exported natural gas as fuel. The high-temperature flame and flue gas are generated by combustion in the furnace through a burner. The heat is transferred to the intermediate medium water in the water jacket through the flue pipe or fire tube. The heated water then transfers the heat to the crude oil produced fluid flowing in the coil through the coil heat exchanger, thereby achieving the heating of the crude oil.

[0004] However, traditional water jacket heaters have the following problems in practical applications: First, most existing water jacket heaters adopt natural circulation heat exchange methods based on radiation and convection. After the high-temperature flue gas generated by fuel combustion in the furnace completes one heat transfer to the water jacket, it is directly discharged into the atmosphere through the chimney without sufficient waste heat utilization. The waste heat recovery efficiency of the flue gas is low, resulting in energy waste. Second, after long-term operation, scale easily forms on the coils and the inner wall of the water jacket, and the thermal conductivity gradually decreases, resulting in a significant reduction in heat exchange efficiency. In order to ensure that the crude oil reaches the required heating temperature, more fuel must be consumed, and the operating cost increases accordingly. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a gas-electric dual-use skid-mounted boiler integrated heating device to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated heating device for a gas-electric dual-use skid-mounted boiler, comprising a heating furnace body, an oil inlet and an oil outlet fixedly connected to the heating furnace body, and a water inlet and a water outlet fixedly connected to the heating furnace body. An upper plate and a lower plate are fixedly installed inside the heating furnace body, with multiple connecting holes extending through between the upper and lower plates. Multiple vertical flue pipes connected to corresponding connecting holes are fixedly installed between the upper and lower plates. A heat exchange chamber is formed between the upper plate, the lower plate, and the furnace wall of the heating furnace body. A spiral oil pipe is installed inside the heat exchange chamber, and the spiral oil pipe is fixedly connected to the oil inlet and the oil outlet. A lifting assembly for cleaning the outer side of the vertical flue pipes is installed inside the heating furnace body. A sliding component for cleaning the spiral oil pipes is installed on the outer side of the lifting assembly. Sealing components for sealing the connecting holes are rotatably installed on both the upper and lower plates. When the lifting assembly is in operation, it is also used to control the rotation of the sealing components, thereby achieving misaligned opening of the connecting holes.

[0007] Preferably, it also includes a skid-mounted base fixedly installed at the lower end of the heating furnace body, and an inner cylinder fixedly installed between the lower plate and the bottom of the heating furnace body. The lower plate, the bottom of the heating furnace body and the inner cylinder form a combustion chamber. A burner and an observation window are installed through the combustion chamber. An exhaust end is fixedly connected to the upper end of the heating furnace body. The exhaust end is connected to the combustion chamber through a connecting hole and a vertical flue.

[0008] Preferably, the lifting assembly includes a motor fixedly installed on the upper end of the heating furnace body, a reciprocating screw rotatably installed on the lower plate, the upper end of the reciprocating screw being fixedly connected to the output end of the motor, a matching collar slidingly sleeved on the outer side of the reciprocating screw, the collar being located in the heat exchange chamber, multiple brackets being fixedly installed at equal intervals around the collar, push rings slidingly sleeved on the outer side of multiple vertical flue pipes, multiple push rings being fixedly connected to corresponding brackets, and a mixing assembly rotatably installed on multiple brackets.

[0009] Preferably, the mixing assembly includes a rotating rod rotatably connected to the support, and a stirring blade is fixedly mounted on the rotating rod.

[0010] Preferably, the sealing element includes a fixing frame fixedly sleeved on the reciprocating lead screw, and a sealing plate for sealing the connection hole is fixedly installed on the fixing frame. The sealing plate located on the upper surface of the upper plate is in sliding contact with the upper plate, and the sealing plate located on the lower surface of the lower plate is in sliding contact with the lower plate. The upper sealing plate and the lower sealing plate are staggered.

[0011] Preferably, a flue gas filter is installed inside the air outlet.

[0012] Preferably, an electric heater is installed in the heat exchange chamber.

[0013] Preferably, both ends of the reciprocating lead screw are rotatably connected to the upper plate and the lower plate via oil-sealed bearings.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention features a sleeve with a threaded engagement on the outer side of a reciprocating lead screw, and multiple push rings that slide and fit with vertical flue pipes are fixedly installed on a bracket around the sleeve. During the operation of the heating furnace, the motor drives the reciprocating lead screw to rotate, and the sleeve moves up and down along the axial direction of the lead screw, causing each push ring to slide up and down synchronously along the outer wall of the vertical flue pipe. The inner edge of the push ring always maintains sliding contact with the outer wall of the vertical flue pipe. During this reciprocating sliding process, the push ring can continuously scrape off the scale layer that has precipitated and adhered to the outer surface of the vertical flue pipe, effectively inhibiting the accumulation and thickening of scale on the heat exchange surface of the vertical flue pipe. This avoids the decrease in heat transfer efficiency caused by the increased thermal resistance of the scale layer, significantly extends the efficient operation cycle of the heating furnace under non-cleaning conditions, and reduces excessive fuel consumption caused by scaling.

[0015] 2. To achieve the technical objective of controllable retention of high-temperature flue gas within vertical flue pipes and full release of residual heat, this invention includes a sealing plate fixedly installed on a mounting frame to seal the connection holes. The sealing plate located on the upper surface of the upper plate and the sealing plate located on the lower surface of the lower plate are staggered, thereby enabling alternating switching control of the on / off states of the upper and lower ends of multiple vertical flue pipes. When the lower end of a vertical flue pipe is closed by a sealing plate, its upper end is open, allowing the flue gas within that vertical flue pipe to be smoothly discharged through the upper connection hole. At this time, the vertical flue pipe performs its exhaust function. When the upper end of a vertical flue is sealed by a sealing plate, its lower end is open. High-temperature flue gas can only enter the vertical flue through the lower end. Because the upper end is sealed, the flue gas cannot drift away quickly and is forced to remain inside the vertical flue cavity. This prolongs the residence time of the high-temperature flue gas in the vertical flue, allowing sufficient time for the heat in the flue gas to be transferred to the water through the pipe wall. This achieves deep utilization of the waste heat of the flue gas, effectively increases the heat exchange contribution per unit volume of flue gas, and avoids the waste phenomenon in traditional structures where high-temperature flue gas flows through the flue quickly and a large amount of sensible heat is discharged before it can be released. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the heating furnace body of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the spiral oil pipe, the lower plate, and the upper plate of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the vertical smoke pipe and the spiral oil pipe of the present invention; Figure 5This is a schematic diagram of the three-dimensional connection structure of the ring and the bracket of the present invention; Figure 6 This is a three-dimensional structural diagram of the lifting component of the present invention; Figure 7 This is a schematic diagram showing the disassembled structure of the sealing element, lower plate, and upper plate of the present invention.

[0017] In the diagram: 1. Heating furnace body; 2. Oil outlet; 3. Burner; 4. Oil inlet; 5. Water outlet; 6. Water inlet; 7. Flue gas filter; 8. Gas outlet; 9. Motor; 10. Electric heater; 11. Vertical flue; 12. Inner cylinder; 13. Spiral oil pipe; 14. Lower plate; 15. Upper plate; 16. Fixing frame; 17. Sealing plate; 18. Reciprocating screw; 19. Connecting hole; 20. Rotating rod; 21. Skid-mounted base; 22. Collar; 23. Observation window; 24. Push ring; 25. Stirring blade; 26. Support. Detailed Implementation

[0018] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0019] Please see Figures 1-7A gas-fired and electric dual-use skid-mounted boiler integrated heating device includes a heating furnace body 1, an oil inlet end 4 and an oil outlet end 2 fixedly connected to the heating furnace body 1, and a water inlet 6 and a water outlet 5 fixedly connected to the heating furnace body 1. It also includes a skid-mounted base 21 fixedly installed at the lower end of the heating furnace body 1 for easy hoisting and relocation. An upper plate 15 and a lower plate 14 are fixedly installed inside the heating furnace body 1. The upper plate 15, lower plate 14, and the furnace wall of the heating furnace body 1 form a heat exchange chamber. The water inlet 6 and water outlet 5 are both connected to the heat exchange chamber of the heating furnace body 1. An inner cylinder 12 fixedly installed between the lower plate 14 and the bottom of the heating furnace body 1 forms a combustion chamber between the lower plate 14 and the bottom of the heating furnace body 1. It adopts a split-type indirect heating system, with the combustion module and heat exchange module separated. Flame and flue gas burn in the combustion chamber, transferring heat to an intermediate heat transfer medium within the heat exchange chamber, which then supplies heat. The upper plate 15 and... Multiple connecting holes 19 are provided through the lower plate 14. Multiple vertical flue pipes 11 connected to the corresponding connecting holes 19 are fixedly installed between the upper plate 15 and the lower plate 14. Due to the vertical design of the internal structure, when the interior needs to be cleaned, only a cleaning solvent needs to be added. After soaking, the liquid is discharged from the bottom by its own weight. A spiral oil pipe 13 is installed in the heat exchange chamber. The spiral oil pipe 13 is fixedly connected to the oil inlet 4 and the oil outlet 2. A burner 3 and an observation window 23 are provided through the combustion chamber (using an existing low-NOx burner 3, such as the low-NOx burner for oil fields disclosed in the authorization announcement number CN215863383U). An exhaust end 8 is fixedly connected to the upper end of the heating furnace body 1 (a flue gas filter 7 is installed in the exhaust end 8, using an existing mature flue gas filter 7 to filter the exhaust flue gas). The exhaust end 8 is connected to the combustion chamber through the connecting holes 19 and the vertical flue pipes 11. A lifting assembly for cleaning the outer side of vertical flue pipes 11 is installed inside the heating furnace body 1. The lifting assembly includes a motor 9 fixedly installed on the upper end of the heating furnace body 1, and a reciprocating screw 18 rotatably installed on the lower plate 14. The upper end of the reciprocating screw 18 is fixedly connected to the output end of the motor 9. Both ends of the reciprocating screw 18 are rotatably connected to the upper plate 15 and the lower plate 14 through oil-sealed bearings. The heat exchange chamber is filled with water, and the oil-sealed bearings ensure the sealing of the connection. A matching collar 22 is slidably sleeved on the outer side of the reciprocating screw 18. The collar 22 is located in the heat exchange chamber, and multiple supports 26 are fixedly installed at equal intervals around the collar 22. Push rings 24 (sliding contact between the push rings 24 and the vertical flue pipes 11) are slidably sleeved on the outer side of multiple vertical flue pipes 11. Multiple push rings 24 are fixedly connected to the corresponding supports 26. When heating is in operation, the motor is started. The machine 9 drives the reciprocating screw 18 to rotate, and the reciprocating screw 18 drives the collar 22 to move up and down along the axis of the reciprocating screw 18, which drives each support 26 to move. The support 26 drives the push ring 24 to move up and down along the outer wall of the vertical flue 11 in a synchronous sliding motion. The inner edge of the push ring 24 always maintains sliding contact with the outer wall of the vertical flue 11. During this reciprocating sliding process, the push ring 24 can continuously scrape off the scale layer that has been deposited on the outer surface of the vertical flue 11, effectively inhibiting the accumulation and thickening of scale on the heat exchange surface of the vertical flue 11, thereby avoiding the decrease in heat transfer efficiency caused by the increase in thermal resistance of the scale layer, so that the apparent heat transfer coefficient between the vertical flue 11 and the water medium remains stable during long-term operation, significantly extending the high-efficiency operation cycle of the heating furnace 1 under the condition of no cleaning, and reducing excessive fuel consumption caused by scaling. To achieve the technical objectives of uniform temperature distribution within the heat exchange chamber, accelerated heat exchange between the inner and outer liquid layers, and reduced localized temperature difference accumulation, this invention rotatably mounts mixing components on multiple supports 26. Specifically, each mixing component includes a rotating rod 20 rotatably connected to the support 26, with stirring blades 25 fixedly mounted on the rotating rod 20. The stirring blades 25 are irregularly shaped, with inconsistent blade sizes on both sides of the rotating rod 20, forming an asymmetrical force structure. When the support 26 reciprocates vertically under the drive of the reciprocating screw 18, the support 26 drives the rotating rod 20 and stirring blades 25 to rise and fall synchronously. During this rising and falling process, phase interaction occurs between the water medium within the heat exchange chamber and the stirring blades 25. Regarding the motion, since the stirring blade 25 is rotatably connected to the support 26 via the rotating rod 20, and the areas of the two sides of the stirring blade 25 are not equal, the impact force generated by the water flow on the two sides of the blades is different, forming an unbalanced torque, thereby driving the stirring blade 25 to swing or rotate around the rotating rod 20. This motion is superimposed with the up-and-down reciprocating motion of the support 26 itself, forming a multi-degree-of-freedom compound stirring effect, which actively stirs and disturbs the water medium in the heat exchange chamber, accelerates the forced convection mixing between the high-temperature area water near the wall of the vertical flue 11 and the low-temperature area water far from the wall, promotes the rapid fusion of the inner and outer liquid layers, effectively eliminates the local temperature difference in the heat exchange chamber, and thus improves the overall heat exchange efficiency.

[0020] Both the upper plate 15 and the lower plate 14 are rotatably mounted with sealing elements to seal the connecting hole 19. When the lifting assembly is working, it is also used to control the rotation of the sealing elements to achieve the misaligned opening of the connecting hole 19.

[0021] As a further technical solution of the present invention, the sealing element includes a fixing frame 16 fixedly sleeved on the reciprocating screw 18, and a sealing plate 17 for sealing the connection hole 19 is fixedly installed on the fixing frame 16. The sealing plate 17 located on the upper surface of the upper plate 15 slides in contact with the upper plate 15, and the sealing plate 17 located on the lower surface of the lower plate 14 slides in contact with the lower plate 14. The upper sealing plate 17 and the lower sealing plate 17 are staggered, thereby realizing the alternating switching control of the on / off state of the upper and lower ends of multiple vertical flues 11. When the lower end of a certain vertical flue 11 is closed by the sealing plate 17, its upper end is in the open state, and the flue gas in the vertical flue 11 can be connected through the upper end. When the air flows smoothly out of the hole 19, the vertical flue pipe 11 performs the exhaust function. When the upper end of a vertical flue pipe 11 is closed by the sealing plate 17, its lower end is in the open state. High-temperature flue gas can only enter the vertical flue pipe 11 through the lower end. Because the upper end is closed, the flue gas cannot drift away quickly and is forced to stay inside the cavity of the vertical flue pipe 11. This prolongs the residence time of the high-temperature flue gas in the vertical flue pipe 11, allowing sufficient time for the heat in the flue gas to be transferred to the water through the pipe wall. This achieves deep utilization of the waste heat of the flue gas, effectively increases the heat exchange contribution per unit volume of flue gas, and avoids the waste phenomenon in the traditional structure where high-temperature flue gas flows quickly through the flue pipe and a large amount of sensible heat is discharged before it can be released. For subsequent cleaning, the heating furnace body 1 and inner cylinder 12 are set to be openable. Before adding the cleaning solvent, the bottom of the vertical flue 11 is sealed by the sealing plate 17, and then soaked. After removing the sealing plate 17, the cleaning solvent can be discharged.

[0022] As a further technical solution of the present invention, an electric heater 10 is installed in the heat exchange chamber. This heating device has two types: a gas burner 3 and an electric heater 10. It is a dual-use gas and electric device with the gas burner 3 as the main component and the electric heater 10 as the auxiliary component. When the burner 3 experiences an unrecoverable malfunction, the electric heater 10 can be used to ensure the normal operation of oilfield production.

[0023] During work: (I) Equipment Installation and Initial Preparation Phase The entire device is hoisted to the predetermined installation position at the oilfield wellhead or gathering and transportation station by means of the skid-mounted base 21 fixedly installed at the lower end of the heating furnace body 1. The skid-mounted base 21 has the overall relocation capability. The oil inlet 4 is connected to the crude oil pipeline, the oil outlet 2 is connected to the external pipeline, the water inlet 6 is connected to the water supply source, the water outlet 5 is connected to the hot water treatment end, the gas inlet of the burner 3 is connected to the associated gas or external gas pipeline network, and the cable of the electric heater 10 is connected to the power distribution system. The upper sealing plate 17 and the lower sealing plate 17 are at the initial angle of staggered arrangement. Among the vertical flue pipes 11, some are open at the top and closed at the bottom, and some are closed at the top and open at the bottom. (II) Gas heating start-up and operation phase Open the fuel pipeline valve and start the burner 3. Ignite and burn in the combustion chamber formed by the lower plate 14, the bottom of the heating furnace body 1 and the inner cylinder 12 to produce high temperature flame and flue gas. The burner 3 adopts low nitrogen combustion technology. The observation window 23 is used to observe the combustion flame status during operation. High-temperature flue gas rises from the combustion chamber and enters the connection hole 19 opened on the lower plate 14, and then enters the vertical flue pipe 11 connected to the connection hole 19. The flue gas flows from bottom to top along the vertical flue pipe 11. During the rising process, the heat it carries is transferred to the intermediate medium water in the heat exchange chamber through the pipe wall of the vertical flue pipe 11, and the water temperature gradually increases. Simultaneously, motor 9 is started. Driven by reciprocating screw 18, fixed frame 16 drives upper and lower sealing plates 17 to rotate synchronously. Due to the staggered arrangement between the upper and lower sealing plates 17 (at the same angular position, when the upper sealing plate 17 closes the upper end of a vertical smoke pipe 11, the corresponding position of the lower sealing plate 17 does not close the lower end of the vertical smoke pipe 11, and vice versa), each vertical smoke pipe 11 is divided into two working states: Exhaust status: The vertical flue pipe 11 with the lower sealing plate 17 closed and the upper end open can not allow the flue gas at the lower end to enter, but the flue gas already in the pipe can be discharged into the exhaust end 8 through the upper connection hole 19 to perform the exhaust function. Retention heat exchange state: The vertical flue 11 with the upper sealing plate 17 closed and the lower end open, after the high temperature flue gas enters the tube cavity through the lower end, it cannot drift away quickly because the upper end is closed. It is forced to stay in the tube cavity, which prolongs the contact time between the high temperature flue gas and the tube wall, so that the sensible heat in the flue gas can be fully transferred to the water medium through the tube wall, realizing the deep and stepwise utilization of the waste heat of the flue gas. As the sealing plate 17 continues to rotate, each vertical flue pipe 11 alternates between exhaust state and heat exchange state, ensuring that all flue gas is fully heat exchanged before being discharged through the outlet end 8. This forces the flue gas to remain in the pipe, prolonging the heat exchange time and significantly increasing the heat exchange contribution per unit volume of flue gas. It also avoids the heat waste caused by the rapid flow and discharge of high-temperature flue gas, resulting in a significant improvement in the overall thermal efficiency of the heating furnace. The heated water in the heat exchange chamber serves as the intermediate heat transfer medium. It transfers heat to the crude oil flowing inside the pipe through the pipe wall of the spiral oil pipe 13. The spiral oil pipe 13 is spirally coiled in the heat exchange chamber. Its spiral structure effectively increases the length of the heat exchange pipe per unit volume, ensuring sufficient heat exchange between the water side and the oil side. (III) Online descaling and water temperature equalization stage During the heating operation, when the starting motor 9 drives the reciprocating screw 18 to rotate, the collar 22 moves up and down along its axis under the helical drive of the reciprocating screw 18. The collar 22 drives each support 26 to move up and down synchronously. Each support 26 drives the push ring 24 to slide up and down along the outer wall of the vertical flue 11. The inner edge of the push ring 24 always maintains sliding contact with the outer wall of the vertical flue 11. During the reciprocating sliding process, it continuously scrapes away the scale and salt deposits that have been deposited on the outer surface of the vertical flue 11, effectively inhibiting the accumulation and thickening of scale on the heat exchange surface of the flue. During the lifting and lowering of each support 26, the stirring blades 25, which are rotatably mounted on the support 26, move up and down accordingly. The stirring blades 25 are asymmetrical blades whose center of mass is offset from the axis of the rotating rod 20. The impact force generated by the water flow on the two sides of the blades is different, forming an unbalanced torque, which drives the stirring blades 25 to swing or rotate around the rotating rod 20. This swing / rotation motion is superimposed with the up-and-down reciprocating motion of the support 26 itself, forming a multi-degree-of-freedom compound stirring effect, which actively stirs and disturbs the water medium in the heat exchange chamber, accelerates the forced convection mixing between the high-temperature water near the wall of the vertical flue 11 and the low-temperature water far away from the wall, makes the water temperature in each area of ​​the heat exchange chamber tend to be uniform, eliminates local temperature differences, and improves the overall heat exchange efficiency. (iv) Flue gas filtration and emission stage After sufficient heat exchange through the vertical flue pipe 11, the flue gas flows into the outlet end 8 through the upper connection hole 19. The flue gas filter 7 installed in the outlet end 8 filters the discharged flue gas. (v) Emergency Operation Phase of Electric Heating When the associated gas supply in the oilfield is insufficient, the gas pipeline network fails, or the burner 3 has a fault that cannot be repaired on site, the electric heating mode is switched to. The electric heater 10 directly heats the medium water in the heat exchange chamber, and the heated water transfers heat to the crude oil through the spiral oil pipe 13. (vi) Maintenance phase After the cumulative operation reaches the maintenance cycle, the descaling solvent is injected from the inlet 6 using the vertical structure of the heat exchange chamber. After soaking for a certain period of time, the dissolved scale and impurities are discharged from the outlet 5.

[0024] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A combined heat and power skid-mounted boiler integrated heating device, comprising a heating furnace body (1), an oil inlet end (4) and an oil outlet end (2) fixedly communicated with the heating furnace body (1), and a water inlet (6) and a water outlet (5) fixedly communicated with the heating furnace body (1), characterized in that, The heating furnace body (1) is fixedly installed with an upper plate (15) and a lower plate (14). Multiple connecting holes (19) are opened through the upper plate (15) and the lower plate (14). Multiple vertical flue pipes (11) communicating with the corresponding connecting holes (19) are fixedly installed between the upper plate (15) and the lower plate (14). The upper plate (15), the lower plate (14) and the furnace wall of the heating furnace body (1) form a heat exchange chamber. A spiral oil pipe (13) is installed in the heat exchange chamber. The spiral oil pipe (13) is fixedly connected with the oil inlet end (4) and the oil outlet end (2). A lifting assembly for cleaning the outside of the vertical flue pipe (11) is installed in the heating furnace body (1). A sealing element for sealing the connecting hole (19) is rotatably installed on both the upper plate (15) and the lower plate (14). When the lifting assembly is working, it is also used to control the rotation of the sealing element to realize the misaligned opening of the connecting hole (19).

2. The combined gas and electric prizing boiler integrated heating device according to claim 1, characterized in that, It also includes a skid-mounted base (21) fixedly installed at the lower end of the heating furnace body (1) and an inner cylinder (12) fixedly installed between the lower plate (14) and the bottom of the heating furnace body (1). The lower plate (14), the bottom of the heating furnace body (1) and the inner cylinder (12) form a combustion chamber. A burner (3) and an observation window (23) are installed through the combustion chamber. An exhaust end (8) is fixedly connected to the upper end of the heating furnace body (1). The exhaust end (8) is connected to the combustion chamber through a connecting hole (19) and a vertical flue (11).

3. The combined gas and electric skid-mounted boiler integrated heating device according to claim 2, characterized in that, The lifting assembly includes a motor (9) fixedly installed on the upper end of the heating furnace body (1), a reciprocating screw (18) rotatably installed on the lower plate (14), the upper end of the reciprocating screw (18) being fixedly connected to the output end of the motor (9), a matching collar (22) being slidably sleeved on the outer side of the reciprocating screw (18), the collar (22) being located in the heat exchange chamber, a plurality of brackets (26) being fixedly installed at equal intervals around the collar (22), a push ring (24) being slidably sleeved on the outer side of a plurality of vertical flue pipes (11), a plurality of push rings (24) being fixedly connected to the corresponding brackets (26), and a mixing assembly being rotatably installed on a plurality of brackets (26).

4. The integrated heating device for a gas-fired and electric dual-use skid-mounted boiler according to claim 3, characterized in that, The mixing assembly includes a rotating rod (20) rotatably connected to a support (26), on which a stirring blade (25) is fixedly mounted.

5. The integrated heating device for a skid-mounted gas-electric dual-use boiler according to claim 4, characterized in that, The sealing element includes a fixed frame (16) fixedly sleeved on the reciprocating screw (18), and a sealing plate (17) for sealing the connection hole (19) is fixedly installed on the fixed frame (16). The sealing plate (17) located on the upper surface of the upper plate (15) slides in contact with the upper plate (15), and the sealing plate (17) located on the lower surface of the lower plate (14) slides in contact with the lower plate (14). The upper sealing plate (17) and the lower sealing plate (17) are misaligned.

6. The integrated heating device for a gas-fired and electric dual-use skid-mounted boiler according to claim 5, characterized in that, A flue gas filter (7) is installed inside the outlet end (8).

7. The integrated heating device for a gas-fired and electric dual-use skid-mounted boiler according to claim 6, characterized in that, An electric heater (10) is installed in the heat exchange chamber.

8. The integrated heating device for a skid-mounted gas-fired and electric dual-use boiler according to claim 7, characterized in that, Both ends of the reciprocating lead screw (18) are rotatably connected to the upper plate (15) and the lower plate (14) through oil-sealed bearings.

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