Natural gas water jacket heating furnace

Abstract

The utility model relates to the technical field of water jacket heating furnaces, in particular to a natural gas water jacket heating furnace which comprises a tank body, saddles installed at the two ends of the bottom of the tank body, a chimney installed at the top of one end of the tank body, a liquid receiving plate installed at the position close to the top end of the chimney, and a chimney cap installed at the top of the chimney. The upper half part of the other end of the tank body is more convex than the lower half part; the heating assembly is arranged at the bottom end in the tank body, and the heating assembly is used for increasing the temperature of liquid in the heating furnace; the anti-explosion assembly is arranged on one side of the tank body, and the anti-explosion assembly is used for reducing the air pressure which is sharply increased when the heating assembly deflagrates; the heat exchange assembly is arranged at the upper end of the interior of the tank body, and the heat exchange assembly is used for increasing the temperature of a process medium. The natural gas water jacket heating furnace aims to solve the problems that when a heating furnace combusts, the pressure intensity in the heating furnace is high, and the furnace is inconvenient to shut down and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of water jacket heaters, in particular to a natural gas water jacket heater. Background Technique

[0002] For a traditional natural gas water jacket heater, the heat exchange tube group is a detachable structure, which is convenient for regularly extracting and checking its wall thickness, evaluating its service life, and avoiding continuing to use it due to the thinning of the heat exchange tube wall caused by corrosion, resulting in safety accidents. However, the combustion device of this kind of heater has the following drawbacks:

[0003] 1. An explosion-proof door is not provided or the explosion-proof door is arranged at the bottom of the chimney and is not directly connected to the fire tube. When an explosion and combustion occurs, a large amount of rapidly generated flue gas cannot be quickly released, and the pressure inside the fire tube rises sharply, resulting in damage to the heater;

[0004] 2. A maintenance passage cannot be set in the afterburning chamber, resulting in maintenance personnel being unable to regularly enter the afterburning chamber to clean ash and perform maintenance, affecting the heat exchange effect of the smoke pipes and the service life of the equipment;

[0005] 3. The smoke pipes are horizontally arranged. When the heater operates at low load, a large amount of flue gas condensate will flow into the afterburning chamber, causing water accumulation in the afterburning chamber and affecting the operation of the equipment;

[0006] 4. When operating at low load, the flue gas temperature is low. When the flue gas is discharged from the chimney, a large amount of condensate will coalesce and drip down from the chimney cap, resulting in a poor on-site environment, which is difficult to maintain and handle;

[0007] 5. The detachable rear head is a whole-round structure. When the heat exchange tube group needs to be overhauled, it needs to be extracted, increasing the workload of the overhaul construction.

[0008] There are areas that can be optimized for the combustion device of the traditional natural gas water jacket heater in this application, which can perfectly solve the above drawbacks. Therefore, this application discloses a natural gas water jacket heater to solve problems such as high pressure inside the heater during combustion and inconvenient shutdown for maintenance. Utility Model Content

[0009] In view of this, the purpose of the present utility model is to provide a natural gas water jacket heater to solve problems such as high pressure inside the heater during combustion and inconvenient shutdown for maintenance.

[0010] For the above purposes, the utility model provides a natural gas water jacket heating furnace, including: a tank body, saddle seats are installed at both ends of the bottom of the tank body, a chimney is installed at one end of the tank body, and a liquid receiving tray is installed near the top end of the chimney. A chimney cap is installed at the top of the chimney. Condensate drainage holes are formed in the chimney body inside the liquid receiving tray. The condensed water coalesced and dripping from the chimney cap will drip into the liquid receiving tray, and then flow down the inner wall of the chimney along the condensate drainage holes in the chimney body to the bottom of the chimney, and then be discharged from the flue gas condensate drainage port at the bottom of the chimney.

[0011] A burner is installed on the front sealing plate of the corrugated fire tube at the bottom end of the furnace body on the same side of the chimney on the tank body. And the upper half of the other end of the tank body protrudes more than the lower half, and both are set as semi-circular shapes. The end of the protruding part is a semi-circular flange and a detachable semi-circular flat head that forms a fit with it;

[0012] A heating component, the heating component is arranged at the inner bottom end of the tank body, and the heating component is used to increase the temperature of the liquid in the heating furnace;

[0013] An explosion-proof component, the explosion-proof component is arranged on one side of the tank body, and the explosion-proof component is used to reduce the rapidly rising air pressure when the heating component explodes and burns;

[0014] A heat exchange component, the heat exchange component is arranged at the upper end inside the tank body, and the heat exchange component is used to increase the temperature of the process medium.

[0015] Preferably, the heating component includes a burner. A burner is installed on the side wall at the bottom end of the tank body on the same side as the chimney. A front sealing plate of a corrugated fire tube is installed on one side of the burner. One end of the corrugated fire tube is installed on the front head of the tank body. The other end of the corrugated fire tube is installed with a return combustion chamber. The corrugated fire tube and the smoke tube are connected in parallel on the front tube plate of the return combustion chamber. The front tube plate of the return combustion chamber is connected with a downwardly inclined smoke tube. A detachable explosion-proof component is installed on the rear sealing plate of the return combustion chamber through a connecting short section.

[0016] Preferably, one end of the corrugated fire tube is installed on the front head, the other end is installed with a return combustion chamber. The corrugated fire tube and the smoke tube are connected in parallel on the front tube plate of the return combustion chamber. The front tube plate of the return combustion chamber is connected with a downwardly inclined smoke tube. A detachable explosion-proof component is installed on the rear sealing plate of the return combustion chamber through a connecting short section.

[0017] Preferably, the explosion-proof component includes an exhaust pipe. One end of the exhaust pipe is installed on the connecting flange of the detachable explosion-proof component. And the exhaust pipe is arc-shaped. The other end of the exhaust pipe faces upward. And an explosion-proof door mounting plate is fixedly installed at the end of the exhaust pipe. The explosion-proof door is installed above the explosion-proof door mounting plate.

[0018] Preferably, circular holes are opened in a uniform circular array on the explosion-proof door mounting plate, vertical guide rods are fixedly welded in the circular holes, the vertical guide rods are located above the explosion-proof door mounting plate and the explosion-proof door is slidably installed on the vertical guide rods, a vertical spring is sleeved on the vertical guide rods, and a limiting circular block is installed on the upper end of the vertical guide rods, the lower end of the vertical spring abuts on the explosion-proof door, and the upper end abuts on the bottom wall of the limiting circular block installed on the top end of the vertical guide rod.

[0019] Preferably, the heat exchange assembly includes multiple groups of support plates, which are installed at the upper end of the tank body, and a heat exchange tube group is installed on the support plate. Every three non-linear pipes of the heat exchange tube group are arranged in a non-equilateral triangle. The positions of the multiple groups of support plates corresponding to the heat exchange tube group are provided with circular holes matching the diameter size of the heat exchange tube group.

[0020] Preferably, cylindrical sliders are installed at the bottom ends of both sides of the support plate, an external flange is installed at one end of the heat exchange tube group close to the explosion-proof component, and a semicircular flange and a detachable semicircular flat head that cooperates with it are installed on one end of the external flange on the tank body, and a fixing plate is installed on the inner wall of the tank body at the position of the cylindrical slider, and a hole matching the diameter size of the cylindrical slider is opened on the fixing plate, and the cylindrical slider fits with the fixing plate.

[0021] Preferably, a water saver is installed on the top of the tank body, and an inspection door is installed at the middle and upper part of the side surface of one end of the tank body.

[0022] Beneficial effects of the utility model:

[0023] 1. The explosion-proof components of the device are directly connected to the fire tube through the short section and the backfire chamber. When a deflagration occurs, a large amount of smoke generated rapidly can be quickly released through the explosion-proof components, and the pressure in the fire tube will not increase sharply, thereby protecting the safety of the heating furnace;

[0024] 2. The reburning chamber of the device is connected with a detachable explosion-proof component through a short section. After the explosion-proof component is disassembled, maintenance personnel can regularly enter the reburning chamber for dust cleaning and maintenance, thereby ensuring the heat exchange effect of the heating furnace smoke pipe and prolonging the service life of the heating furnace;

[0025] 3. The smoke pipe of the device is set downwardly. When the heating furnace is running at low load, a large amount of smoke condensate will flow downward into the front smoke box, and then be discharged through the condensate discharge pipe at the bottom of the smoke box, so as not to cause water accumulation in the backfire chamber and ensure the normal operation of the equipment;

[0026] 4. When the device operates at low load, a large amount of flue gas condensate generated at the chimney outlet will coalesce on the liquid receiving tray and be discharged from the flue gas condensate drain port on the chimney body. The discharged condensate flows along the inner wall of the chimney to the bottom of the chimney and then is discharged from the condensate drain port at the bottom of the chimney, avoiding a situation where the on-site environment is poor and difficult to maintain and handle.

[0027] 5. The detachable rear head of the device is a semi-circular structure, which is convenient for the heat exchange tube group to be pulled out during maintenance, and the maintenance construction is convenient.

[0028] 6. The built-in heating component of the device is located at the bottom end inside the tank body. This is beneficial for burying the combustion chamber with the highest temperature in water, increasing the safety range of the heating furnace water level. At the same time, the special semi-circular structure design of the afterburning chamber inside the tank helps to save the internal space of the equipment. The equipped explosion-proof component with a gravity + spring structure effectively reduces the safety risk of the heating furnace that may be caused by the sharply rising fire tube pressure during the fuel gas deflagration in the heating process. This design ensures the safe operation of the heating furnace under abnormal operating conditions and protects the safety of operators and equipment, meeting the strict requirements of modern industry for safe production. The heat exchange component set at the upper end inside the tank body has a non-equilateral triangle arrangement between every three non-linearly arranged heat exchange tubes. This arrangement method can arrange more heat exchange tubes in a limited space, increasing the heat exchange area, having good heat exchange effect and high thermal efficiency. It can quickly transfer the heat in the heated furnace water to the process medium, realizing the heating and temperature rising function of the process medium. This design not only reduces the production cost of the equipment, but also improves the overall energy utilization efficiency, reduces energy consumption, and conforms to the sustainable development concept of green environmental protection. The design of the tank body and saddle makes the entire combustion device have a compact structure, small floor area, and is convenient for installation and use in a limited space. At the same time, the modular design of each component makes the maintenance and replacement work simpler and faster, reducing the maintenance cost. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic side plane structure diagram of the present invention;

[0031] Figure 2 It is a schematic top plane structure diagram of the present invention;

[0032] Figure 3 It is a schematic side sectional structure diagram of the present invention;

[0033] Figure 4 Schematic diagram of the front sectional structure of the present utility model;

[0034] Figure 5 Schematic diagram of the three-dimensional structure of the heating coil of the present utility model;

[0035] Figure 6 For the present utility model Figure 1 Enlarged structure schematic diagram at position A in the present utility model;

[0036] Figure 7 Schematic diagram of the internal part structure of the present utility model.

[0037] 1. Tank body; 2. Chimney; 3. Saddle; 4. Burner; 5. Semi-circular flange; 6. External flange; 7. Liquid receiving tray; 8. Water saver; 9. Removable semi-circular flat head; 10. Chimney cap; 11. Inspection door; 12. Corrugated fire tube; 13. Heat exchange tube group; 14. Support plate; 15. Cylindrical slider; 16. Fixed plate; 17. Re-burning chamber; 18. Removable explosion-proof component; 19. Exhaust pipe; 20. Explosion-proof door mounting plate; 21. Vertical guide rod; 22. Vertical spring; 23. Limit round block; 24. Explosion-proof door. Specific embodiments

[0038] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0039] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] The present utility model provides as Figures 1 to 7A natural gas water jacket heating furnace shown in the figure includes: a tank body 1, saddle supports 3 are installed at both ends of the bottom of the tank body 1, a chimney 2 is installed at the top of one end of the tank body 1, and a liquid receiving tray 7 is installed near the top end of the chimney 2, a chimney cap 10 is installed at the top of the chimney 2, and the upper half of the other end of the tank body 1 protrudes more than the lower half, and both are set as semi-circular shapes, the end of the protruding part is a semi-circular flange 5 and a detachable semi-circular flat head 9 that forms a fit with it; a heating component, which is arranged at the inner bottom end of the tank body 1 and is used to increase the temperature of the liquid in the heating furnace; an explosion-proof component, which is arranged on one side of the tank body 1 and is used to reduce the rapidly rising air pressure when the heating component explodes and burns; a heat exchange component, which is arranged at the upper end of the inner part of the tank body 1 and is used to increase the temperature of the process medium. The built-in heating component of this device is located at the inner bottom end of the tank body 1, which is beneficial to bury the combustion chamber with the highest temperature in water, increasing the safety range of the water level in the heating furnace. At the same time, the special semi-circular structure design of the afterburning chamber 17 in the tank body 1 helps to save the internal space of the equipment. The equipped explosion-proof component with a gravity + spring structure effectively reduces the safety risk of the heating furnace that may be caused by the rapidly rising fire tube pressure during fuel gas explosion and combustion. This design ensures the safe operation of the heating furnace under abnormal operating conditions and protects the safety of operators and equipment, meeting the strict requirements of modern industry for safe production. The heat exchange component arranged at the upper end of the inner part of the tank body 1, with a non-equilateral triangular arrangement between every three non-linearly arranged heat exchange tubes, can arrange more heat exchange tubes in a limited space, increasing the heat exchange area, having good heat exchange effect and high thermal efficiency, and can quickly transfer the heat in the heated furnace water to the process medium to achieve the heating and temperature rising function of the process medium. This design not only reduces the production cost of the equipment, but also improves the overall energy utilization efficiency, reduces energy consumption, and conforms to the sustainable development concept of green environmental protection. The design of the tank body 1 and the saddle supports 3 makes the entire combustion device structure compact, occupies a small area, and is convenient for installation and use in a limited space. At the same time, the modular design of each component makes the maintenance and replacement work more simple and fast, reducing the maintenance cost.

[0041] Further, in this example, as Figure 3As shown in the figure, the heating component includes a burner 4. The burner 4 is installed on the bottom side wall of the tank body 1 on the same side as the chimney 2. A front seal plate of a corrugated fire tube 12 is installed on one side of the burner 4. One end of the corrugated fire tube 12 is installed on the front head of the tank body 1, and the other end of the corrugated fire tube 12 is installed with a recirculation chamber 17. The corrugated fire tube 12 and the smoke pipe are connected in parallel to the front tube sheet of the recirculation chamber 17. The front tube sheet of the recirculation chamber 17 is connected with a downwardly inclined smoke pipe. A detachable explosion-proof component 18 is installed on the rear seal plate of the recirculation chamber 17 through a connecting short section. The burner is the starting part of the heating component, responsible for mixing and igniting the mixture of natural gas and air, generating high-temperature flames and flue gas. One end of the corrugated fire tube 12 is installed on the front head. Its special corrugated design, on the one hand, increases the heat exchange area and improves the heat transfer efficiency. On the other hand, the corrugated structure can offset the temperature difference stress generated by thermal expansion and contraction during the operation of the fire tube, avoiding damage to the heating furnace caused by excessive temperature difference stress. The burner 4 is installed on the front seal plate of the corrugated fire tube (12). When the flame and high-temperature flue gas generated by the burner 4 enter the corrugated fire tube 12, the heat is transferred to the medium to be heated through the wall surface of the fire tube. Since the corrugated fire tube 12 is flexible and can offset the stress generated by thermal expansion and contraction during operation, at the same time, the medium forms a turbulent flow in the fire tube, enhancing the heat exchange effect. The other end of the corrugated fire tube 12 is connected to the recirculation chamber 17 to ensure that the flue gas can continue to transfer heat after flowing through the fire tube, improving the overall heating efficiency. The recirculation chamber 17 is located at the end of the corrugated fire tube 12. Its main function is to turn the flue gas and make it enter the smoke pipe, further utilizing the waste heat of the flue gas for heat exchange in the smoke pipe. The flue gas enters the recirculation chamber 17 and the smoke pipe after leaving the corrugated fire tube 12, and conducts secondary heat exchange with the boiler water, thereby further increasing the temperature of the medium. The detachable explosion-proof component 18 is installed on the rear seal plate of the recirculation chamber through a short section and is an important safety device for the heating component. Under normal working conditions, the explosion-proof door 24 remains closed to prevent the flue gas from flowing out of the heating system and causing heat loss. Once abnormal situations such as overpressure and deflagration occur inside the heating system, the huge pressure will push open the explosion-proof door 24 to release the internal pressure, preventing equipment damage and casualties. The connecting flange of the detachable explosion-proof component also facilitates the operator to enter the recirculation chamber 17 to clean the inside of the fire tube 12 or the smoke pipe and perform maintenance work.

[0042] Further, in this example, as Figure 6As shown, the explosion-proof component includes an exhaust pipe 19. One end of the exhaust pipe 19 is installed on the detachable explosion-proof component connection flange, and the exhaust pipe 19 is arc-shaped. The other end of the exhaust pipe 19 faces upward, and an explosion-proof door mounting plate 20 is fixedly installed at the end of the exhaust pipe 19. An explosion-proof door 24 is installed above the explosion-proof door mounting plate 20. The explosion-proof door mounting plate 20 is evenly and circumferentially arrayed with round holes, and vertical guide rods 21 are fixedly welded in the round holes. The vertical guide rods 21 are slidably installed with the explosion-proof door 24 above the explosion-proof door mounting plate 20, and vertical springs 22 are sleeved on the vertical guide rods 21. Moreover, limit round blocks 23 are installed at the upper ends of the vertical guide rods 21. The lower ends of the vertical springs 22 abut against the explosion-proof door, and the upper ends abut against the bottom walls of the limit round blocks 23 installed at the tops of the vertical guide rods 21. One end of the exhaust pipe 19 is installed on the detachable explosion-proof component connection flange. As a key component connecting the inside of the heating system with the external environment, the exhaust pipe 19 is designed in an arc shape, which helps to guide and slow down the flow rate of the high-pressure flue gas released from the detachable explosion-proof component connection flange, reducing its impact force and destructive power. The other end of the exhaust pipe 19 faces upward. Such a design can ensure that when releasing pressure, the flue gas can be away from the ground and surrounding equipment, reducing potential safety risks. The vertical guide rods 21 are fixedly welded in the round holes evenly and circumferentially arrayed on the explosion-proof door mounting plate 20. These guide rods provide guidance for the relative movement of the explosion-proof door 24. The vertical springs 22 are sleeved on the vertical guide rods 21. These springs will be compressed when subjected to external forces, thus playing a role in buffering and shock absorption. When overpressure occurs inside the heating system, the high-pressure gas is quickly released through the exhaust pipe 19. At this time, the explosion-proof door 24 slidably installed on the vertical guide rods 21 will move upward under the impact of the air flow, compressing the vertical springs 22. The compression process of the vertical springs 22 slows down the moving speed of the explosion-proof door 24, thereby slowing down the gas release speed and reducing its impact force and noise level. The limit round blocks 23 at both ends of the vertical guide rods 21 ensure the movement range of the explosion-proof door 2 in the vertical direction, preventing it from detaching from the guide rod or moving excessively. In the normal working state, the explosion-proof component is in a static state, and components such as the explosion-proof door 24 remain in place. Through the coordinated action of the explosion-proof component, the pressure inside the heating system is safely released, avoiding more serious safety accidents.

[0043] Furthermore, in this example, as Figure 5 and Figure 7As shown in the figure, the heat exchange assembly includes multiple groups of support plates 14, which are installed at the upper end inside the tank body 1. The heat exchange tube groups 13 are installed on the support plates 14. The layout between every three non-linearly arranged pipes of the heat exchange tube groups 13 is a non-equilateral triangle layout. Circular holes matching the diameter size of the heat exchange tube groups 13 are provided at the positions corresponding to the heat exchange tube groups 13 on the multiple groups of support plates 14. Cylindrical sliders 15 are installed at the bottom ends on both sides of the support plates 14. An external flange 6 is installed at one end of the heat exchange tube groups 13 close to the explosion-proof assembly. A semi-circular flange 5 and a detachable semi-circular flat head 9 that cooperate with it are installed at one end of the tank body 1 where the external flange 6 is located. An fixing plate 16 is installed on the inner wall of the tank body 1 at the position of the cylindrical slider 15. A hole matching the diameter size of the cylindrical slider 15 is provided on the fixing plate 16. The cylindrical slider 15 fits with the fixing plate 16. The multiple groups of support plates 14 are installed at the upper end inside the tank body 1, providing a stable support foundation for the heat exchange tube groups 13. The heat exchange tube groups 13 are composed of multiple pipes, and the number of pipes is calculated and determined according to process parameters. The layout between every three non-linearly arranged pipes of these multiple pipes is a non-equilateral triangle layout. This layout is beneficial for arranging more pipes in a limited space, increasing the heat exchange area and improving the heat efficiency. Circular holes matching the diameter size of the heat exchange tube groups 13 are provided at the positions corresponding to the heat exchange tube groups 13 on the support plates 14 to ensure that the heat exchange tube groups 13 can smoothly pass through the support plates 14 and be fixed in place. Cylindrical sliders 15 are installed at the bottom ends on both sides of the support plates 14. The cylindrical sliders 15 can slide in the holes provided on the fixing plate 16. The fixing plate 16 is installed on the inner wall of the tank body 1 at the position of the cylindrical slider 15, and the holes on the fixing plate 16 have the same diameter size as the cylindrical slider 15, realizing the tight fit between the cylindrical slider 15 and the fixing plate 16. This design allows the heat exchange tube groups 13 and their support plates 14 to slide along the fixing plate 16 when needed, facilitating installation, maintenance and replacement. At the same time, in the normal working state, the tight fit between the cylindrical slider 15 and the fixing plate 16 also ensures the stability of the heat exchange tube groups 13. The medium flowing inside the heat exchange tube groups 13 exchanges heat with the high-temperature liquid inside the tank body 1. The medium inside the heat exchange tube groups 13 absorbs these heats and takes them away, thereby realizing the transfer and exchange of heat. An external flange 6 is installed at one end of the heat exchange tube groups 13 close to the explosion-proof assembly. This is a key component for connecting the heat exchange tube groups 13 with other equipment or pipes. A semi-circular flange 5 is installed at one end of the tank body 1 where the external flange 6 is located. The semi-circular flange 5 and the semi-circular flat head are tightly connected together through fasteners such as bolts. This connection method not only ensures the sealing between the heat exchange tube groups 13 and the tank body 1, but also facilitates disassembly and maintenance when needed.

[0044] Further, in this example, as Figure 2As shown, a water-saving device 8 is installed at the top of the tank body 1, and an inspection door 11 is installed in the upper middle part of the side of one end of the tank body 1. The water-saving device 8 can prevent overfilling caused by system failures or improper operations, thereby protecting the heating furnace from damage such as waterlogging. The inspection door 11 is installed in the upper middle part of the side of one end of the tank body 1, providing a convenient inspection port for operators to regularly inspect the inside of the heating furnace. The design of the inspection door 11 allows operators to directly inspect the wall thickness of the heat exchange coil and view the conditions inside the heating furnace, including the heating components, pipe connections, etc., without disassembling the entire tank body 1, so as to timely discover and solve problems and ensure the continuous and efficient operation of the heating furnace.

[0045] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0046] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, 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. A natural gas jacket heating furnace, characterized in that, Comprising: A tank body (1), saddle seats (3) are installed at both ends of the bottom of the tank body (1), a chimney (2) is installed at the top of one end of the tank body (1), and a liquid receiving tray (7) is installed near the top of the chimney (2), a chimney cap (10) is installed at the top of the chimney (2), and the upper half of the other end of the tank body (1) protrudes more than the lower half, and both are set as semi-circular shapes, and the end of the protruding part is a semi-circular flange (5) and a detachable semi-circular flat head (9) that forms a fit with it; A heating component, the heating component is arranged at the inner bottom end of the tank body (1), and the heating component is used to increase the temperature of the liquid in the heating furnace; An explosion-proof component, the explosion-proof component is arranged on one side of the tank body (1), and the explosion-proof component is used to reduce the rapidly rising air pressure when the heating component explodes and burns; A heat exchange component, the heat exchange component is arranged at the upper end inside the tank body (1), and the heat exchange component is used to increase the temperature of the process medium.

2. The natural gas water jacket heating furnace according to claim 1, characterized in that, The heating component includes a burner (4), the burner (4) is installed on the bottom side wall of the tank body (1) on the same side as the chimney (2), a front seal plate of a corrugated fire tube (12) is installed on one side of the burner (4), one end of the corrugated fire tube (12) is installed on the front head of the tank body (1), the other end of the corrugated fire tube (12) is installed with a return combustion chamber (17), the corrugated fire tube (12) and the smoke tube are connected in parallel on the front tube plate of the return combustion chamber (17), the front tube plate of the return combustion chamber (17) is connected with a downwardly inclined smoke tube, and a detachable explosion-proof component (18) is installed on the rear seal plate of the return combustion chamber (17) through a connecting short section.

3. The natural gas water jacket heating furnace according to claim 2, wherein, The explosion-proof component includes an exhaust pipe (19), one end of the exhaust pipe (19) is installed on the connecting flange of the detachable explosion-proof component (18), and the exhaust pipe (19) is arc-shaped, the other end of the exhaust pipe (19) faces upward, and an explosion-proof door mounting plate (20) is fixedly installed at the end of the exhaust pipe (19), and an explosion-proof door (24) is installed above the explosion-proof door mounting plate (20).

4. The natural gas water jacket heating furnace according to claim 3, characterized in that, Round holes are evenly arranged in a circumferential array on the explosion-proof door mounting plate (20), vertical guide rods (21) are fixedly welded in the round holes, the explosion-proof door (24) is slidably installed above the explosion-proof door mounting plate (20) on the vertical guide rods (21), a vertical spring (22) is sleeved on the vertical guide rods (21), and a limiting round block (23) is installed at the upper end of the vertical guide rods (21), the lower end of the vertical spring (22) abuts against the explosion-proof door (24), and the upper end of the vertical spring (22) abuts against the bottom wall of the limiting round block (23) installed at the top of the vertical guide rods (21).

5. A natural gas water jacket heating furnace according to claim 1, characterized in that, The heat exchange component includes multiple groups of support plates (14), and the multiple groups of support plates (14) are installed at the upper end inside the tank body (1). A heat exchange tube group (13) is installed on the support plates (14). A non-equilateral triangle layout is formed among every three non-linearly arranged pipes of the heat exchange tube group (13). Circular holes matching the diameter size of the heat exchange tube group (13) are provided at positions corresponding to the heat exchange tube group (13) on the multiple groups of support plates (14).

6. The natural gas water jacket heating furnace according to claim 5, wherein, Cylindrical sliders (15) are installed at the bottom ends on both sides of the support plate (14). An external flange (6) is installed at one end of the heat exchange tube group (13) close to the explosion-proof component. A semi-circular flange (5) and a detachable semi-circular flat head (9) that mates with it are installed at one end of the tank body (1) where the external flange (6) is located. An fixing plate (16) is installed on the inner wall of the tank body (1) at the position of the cylindrical slider (15). A hole matching the diameter size of the cylindrical slider (15) is provided on the fixing plate (16), and the cylindrical slider (15) fits with the fixing plate (16).

7. A natural gas water jacket heating furnace according to claim 1, characterized in that, A water saver (8) is installed at the top of the tank body (1), and an inspection door (11) is installed at the middle-upper part of one side of the tank body (1).

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