Ultra-low-nitrogen gas steam generator

Abstract

The utility model discloses an ultra-low nitrogen gas steam generator which comprises a shell, two sets of partition plates are installed in the shell, heat exchange pipes fixedly penetrate through the shell and the two sets of partition plates, a buffer cover is installed on the upper portion of the shell, and a plurality of sets of communicating pipes penetrate through the inner top face of the shell. A plurality of sets of mounting pipes fixedly penetrate through the upper portion of the buffer cover, filter screens, air pressure switches and fans are mounted in the multiple sets of mounting pipes correspondingly, a coiled pipe penetrates through the interior of the buffer cover through a bearing, air inlet pipes penetrate through the two sides of the shell correspondingly, and air inlet electromagnetic valves are arranged on the side walls of the two sets of air inlet pipes correspondingly; a steam outlet pipe is installed at one end of the heat exchange pipe, and a pressure valve is arranged on the side wall of the steam outlet pipe. The ultra-low-nitrogen gas steam generator has the advantages that the coiled pipe is adopted, the heat exchange structure can make full contact with high-temperature waste gas through the arranged coiled pipe, it is guaranteed that the high-temperature waste gas can be fully cooled, and the use practicability of the ultra-low-nitrogen gas steam generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generators, in particular to an ultra-low nitrogen fuel gas steam generator. Background Art

[0002] A steam generator is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. A low-nitrogen steam generator is a type of steam generator. In actual use, in order to avoid a large amount of nitrogen in the flue gas being discharged into the atmosphere, a low-nitrogen steam generator is now used to cool the flue gas, which can achieve the purpose of ultra-low nitrogen emissions. In actual use, it has the advantages of simple operation, stable structure and good use effect.

[0003] The prior art discloses a novel low-nitrogen module of a steam generator with publication number: CN217928707U, comprising a shell, a fire grate drawer, a fire grate, an air inlet pipe, a heat exchanger, a buffer chamber, a fan, a water inlet, a water outlet, a support plate, an insulation plate, a water inlet pipe, an exhaust pipe, an ignition wire, a sensing wire, an air pressure switch, an air inlet hole, an air outlet grid, a water inlet solenoid valve and a pressure sensor. When in use, turn on the power, set the required temperature and pressure through the display screen, and then turn on the machine. After turning on the machine, the fan system starts first to sweep and exhaust air. The air pressure switch detects whether there is wind passing through. If there is wind passing through, it is normal. If there is no wind passing through, the processor will be shut down, and then troubleshooting will be performed. After normal operation, the water inlet solenoid valve receives a signal to open, water enters the water inlet pipe, and then the air inlet solenoid valve receives a signal to intake air. At the same time, the fire grate is ignited. If the sensing needle detects that the ignition is normal, the entire system will be shut down for inspection and troubleshooting. After the ignition is successful, the synchronized water enters through the integrated heat exchanger, the fire row burns, and the outer flame of the fire row in the combustion chamber just contacts the heat exchanger, and the water in the heat exchanger is efficiently heat-exchanged and vaporized to produce steam, which is discharged through the outlet of the heat exchanger. The temperature and pressure of the steam will be sensed at the exhaust pipe, and transmitted back to the processor through the data line and displayed on the display screen. At the same time, the exhaust gas will pass through the buffer chamber and be discharged by the fan. During the process, when the exhaust gas passes through the heat exchanger, the cold water or low-temperature water in the heat exchanger will take away most of the heat of the exhaust gas to reduce the temperature and nitrogen oxides of the exhaust gas. During normal combustion, the water outlet of the upper heat exchanger is connected to the water inlet of the lower heat exchanger. Cold water enters from the water inlet of the upper heat exchanger and flows out from the water outlet of the lower heat exchanger. The cold water first passes through the upper heat exchanger and takes away the heat of the exhaust gas after combustion, reducing the temperature of the exhaust gas when it is discharged and preheating the water at the same time. The water is further heated by the lower heat exchanger and finally becomes steam, thus reducing the temperature of the exhaust gas while achieving the effect of low nitrogen. Finally, the exhaust gas is drawn away by the fan and discharged.

[0004] In the above utility model, the exhaust gas preheats the cold water inside the heat exchanger through the buffer chamber, thereby reducing the exhaust gas temperature and achieving the low nitrogen effect. Finally, the exhaust gas is drawn away by the fan and discharged. However, the use position of the heat exchanger is fixed, and the temperature inside the buffer chamber is uneven, which cannot ensure that the cold water inside the heat exchanger can fully contact the high-temperature exhaust gas, reducing the practicality of this utility model.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides an ultra-low nitrogen fuel gas steam generator, which has the advantages of enabling the heat exchange structure to fully contact the high-temperature exhaust gas, ensuring that the high-temperature exhaust gas can be fully cooled, thereby solving the problems in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] In order to achieve the above advantages of enabling the heat exchange structure to fully contact the high-temperature exhaust gas and ensure that the high-temperature exhaust gas can be fully cooled, the specific technical solutions adopted by the utility model are as follows:

[0010] An ultra-low nitrogen gas steam generator comprises a shell, two groups of baffles are installed inside the shell, heat exchange tubes are fixedly penetrated between the shell and the two groups of baffles, a buffer cover is installed on the upper part of the shell, multiple groups of connecting tubes are penetrated on the inner top surface of the shell, multiple groups of mounting tubes are fixedly penetrated on the upper part of the buffer cover, and filters, air pressure switches and fans are installed inside the multiple groups of mounting tubes, a serpentine tube is penetrated inside the buffer cover through a bearing, air intake pipes are penetrated on both sides of the shell, and air intake solenoid valves are arranged on the side walls of the two groups of air intake pipes, a steam outlet pipe is installed on one end of the heat exchange pipe, and the steam outlet pipe is A pressure valve is provided on the side wall, a connecting pipe is installed between the serpentine tube and the heat exchange tube through a bearing, a water inlet pipe is installed on the other end of the serpentine tube through a bearing, a plurality of groups of heat exchange fins are sleeved on the side wall of the serpentine tube, a right-angle plate is installed on one side of the shell, a driving motor is installed on one side of the right-angle plate, and a main gear is sleeved on the output end of the driving motor, a driven gear is sleeved on the side wall of one end of the serpentine tube, a plurality of groups of air holes are opened on the end surface of the buffer cover, interception filters are arranged inside the plurality of groups of air holes, connecting shafts are installed in front of the plurality of groups of air holes, a drawer is passed through the end surface of the shell, and a fire grate is installed inside the drawer.

[0011] Furthermore, the main gear and the driven gear are meshed with each other.

[0012] Furthermore, two groups of positioning blocks are installed on the end surface of the buffer cover, and the two ends of the connecting shaft pass through the two groups of positioning blocks through bearings respectively, and two groups of brush plates are installed on the side wall of the connecting shaft. The side wall of one end of the serpentine tube and the side wall of one end of the connecting shaft are both sleeved with pulleys, and the side walls of the two groups of pulleys are sleeved with transmission belts.

[0013] Furthermore, the two groups of pulleys are located on the same vertical plane.

[0014] Furthermore, a handle is installed on the end surface of the drawer.

[0015] Furthermore, a controller is installed on one side of the shell, and the controller is electrically connected to the water inlet solenoid valve, two groups of the air inlet solenoid valves, the fire grate, the drive motor, multiple groups of the air pressure switches and multiple groups of the fans through wires.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an ultra-low nitrogen gas steam generator, which has the following beneficial effects:

[0018] (1) The utility model adopts a serpentine tube. When the ultra-low nitrogen gas steam generator is actually used, the power is turned on, and multiple sets of fans can draw external air into the interior of the buffer cover through multiple sets of air holes. This part of the air is then discharged through multiple sets of installation pipes. Multiple sets of air pressure switches can detect whether there is gas passing through the multiple sets of installation pipes. After that, the controller opens and closes the water inlet solenoid valve and the two sets of air inlet solenoid valves, and at the same time energizes the fire grate and the drive motor to work. Cold water can enter the interior of the heat exchange tube through the water inlet pipe, the serpentine tube and the connecting pipe. The flame generated by the fire grate can heat the heat exchange tube. When the cold water inside the heat exchange tube is heated to generate steam, the pressure valve can be opened and closed under the influence of the high-pressure steam, and the steam can be discharged through the steam outlet pipe. The generated smoke can pass through the multiple sets of connecting pipes. After entering the buffer cover, the output end of the driving motor can drive the main gear to rotate. Since the main gear and the driven gear are meshed with each other, the rotating main gear can push the driven gear to rotate. The rotating driven gear can drive the serpentine tube to rotate. The rotating serpentine tube can stir the high-temperature flue gas inside the buffer cover. Through multiple sets of heat exchange fins, the rotating serpentine tube can fully contact the high-temperature flue gas. The heat of the high-temperature flue gas can be transferred to the cold water inside it through the serpentine tube, and the cold water can be heated and heated. At the same time, the flue gas is cooled. The cooled flue gas can be discharged through multiple sets of installation pipes. Through the set serpentine tube, the heat exchange structure can fully contact the high-temperature exhaust gas, ensuring that the high-temperature exhaust gas can be fully cooled, thereby improving the practicality of the ultra-low nitrogen fuel gas steam generator.

[0019] (2) The utility model adopts an intercepting filter and a connecting shaft. According to the above operation, when multiple sets of fans are working, external air can enter the interior of the buffer cover through multiple sets of air holes. Multiple sets of filter screens can intercept impurities in this part of the air. Some impurities will be adsorbed on the surface of the multiple sets of filter screens. When the controller makes the driving motor work, with the help of the main gear and the driven gear, the serpentine tube will rotate. The rotating serpentine tube rotates the connecting shaft through two sets of pulleys and transmission belts. The rotating connecting shaft can scrape the surface of the multiple sets of filter screens through two sets of brush plates to push away the adsorbed impurities. The set intercepting filter and connecting shaft can prevent impurities in the air from entering the interior of the buffer cover, thereby ensuring the continuous use of the ultra-low nitrogen gas steam generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a structural schematic diagram of an ultra-low nitrogen fuel gas steam generator proposed by the utility model;

[0022] Figure 2 This is a front view of an ultra-low nitrogen fuel gas steam generator proposed by the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the buffer cover proposed by the utility model;

[0024] Figure 4 The utility model proposes Figure 1 A magnified view of middle;

[0025] Figure 5 The utility model proposes Figure 2 Enlarged view of B.

[0026] In the figure:

[0027] 1. Shell; 2. Partition; 3. Heat exchange tube; 4. Buffer cover; 5. Connecting pipe; 6. Water inlet solenoid valve; 7. Steam outlet pipe; 8. Pressure valve; 9. Air inlet pipe; 10. Air inlet solenoid valve; 11. Drawer; 12. Fire grate; 13. Connecting pipe; 14. Mounting pipe; 15. Filter; 16. Air hole; 17. Intercepting filter; 18. Connecting shaft; 19. Serpentine pipe; 20. Water inlet pipe; 21. Heat exchange fin; 22. Right angle plate; 23. Driving motor; 24. Main gear; 25. Driven gear; 26. Positioning block; 27. Brush plate; 28. Pulley; 29. ​​Transmission belt. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the utility model, an ultra-low nitrogen gas steam generator is provided.

[0030] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-5 As shown, an ultra-low nitrogen gas steam generator according to an embodiment of the utility model comprises a shell 1, two groups of partitions 2 are installed inside the shell 1, heat exchange tubes 3 are fixedly penetrated between the shell 1 and the two groups of partitions 2, a buffer cover 4 is installed on the upper part of the shell 1, a plurality of connecting tubes 13 are penetrated through the inner top surface of the shell 1, a plurality of mounting tubes 14 are fixedly penetrated through the upper part of the buffer cover 4, and a filter screen 15, an air pressure switch and a fan are installed inside the plurality of mounting tubes 14, a serpentine tube 19 is penetrated inside the buffer cover 4 through a bearing, air intake pipes 9 are penetrated on both sides of the shell 1, and air intake solenoid valves 10 are arranged on the side walls of the two groups of air intake pipes 9, a steam outlet pipe 7 is installed at one end of the heat exchange tube 3, and a pressure valve 8 is arranged on the side wall of the steam outlet pipe 7, and a connecting pipe 5 is installed between the serpentine tube 19 and the heat exchange tube 3 through a bearing. , a water inlet pipe 20 is installed at the other end of the serpentine tube 19 through a bearing, a plurality of groups of heat exchange fins 21 are sleeved on the side wall of the serpentine tube 19, a right-angle plate 22 is installed on one side of the shell 1, and a drive motor 23 is installed on one side of the right-angle plate 22, and a main gear 24 is sleeved on the output end of the drive motor 23, a driven gear 25 is sleeved on the side wall of one end of the serpentine tube 19, a plurality of groups of air holes 16 are provided on the end surface of the buffer cover 4, interception filters 17 are arranged inside the plurality of groups of air holes 16, connecting shafts 18 are installed in front of the plurality of groups of air holes 16, a drawer 11 is passed through the end surface of the shell 1, and a fire grate 12 is installed inside the drawer 11, and the serpentine tube 19 is arranged, so that the heat exchange structure can fully contact the high-temperature exhaust gas, so as to ensure that the high-temperature exhaust gas can be fully cooled, thereby improving the practicality of the ultra-low nitrogen gas steam generator.

[0031] In one embodiment, the main gear 24 and the driven gear 25 mesh with each other, so that the main gear 24 drives the driven gear 25 to rotate.

[0032] In one embodiment, two groups of positioning blocks 26 are installed on the end surface of the buffer cover 4, and the two ends of the connecting shaft 18 pass through the two groups of positioning blocks 26 through bearings respectively. Two groups of brush plates 27 are installed on the side wall of the connecting shaft 18. The side wall of one end of the serpentine tube 19 and the side wall of one end of the connecting shaft 18 are both sleeved with pulleys 28, and the side walls of the two groups of pulleys 28 are sleeved with transmission belts 29. The intercepting filter 17 and the connecting shaft 18 are set to prevent impurities in the air from entering the interior of the buffer cover 4, thereby ensuring the continuous use of the ultra-low nitrogen gas steam generator.

[0033] In one embodiment, the two sets of pulleys 28 are located on the same vertical plane to avoid the transmission belt 29 being unable to be connected and used due to the misalignment of the two sets of pulleys 28 .

[0034] In one embodiment, a handle is installed on the end surface of the drawer 11 .

[0035] In one embodiment, a controller is installed on one side of the shell 1, and the controller is electrically connected to the water inlet solenoid valve 6, two groups of air inlet solenoid valves 10, the fire grate 12, the drive motor 23, multiple groups of air pressure switches and multiple groups of fans through wires. The controller can be implemented through simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection will not be described in detail.

[0036] Working principle:

[0037] When the ultra-low nitrogen gas steam generator is actually used, the power is turned on, and multiple sets of fans can draw external air into the interior of the buffer cover 4 through multiple sets of air holes 16. This part of the air is then discharged through multiple sets of installation pipes 14. Multiple sets of air pressure switches can detect whether there is gas passing through the interior of the multiple sets of installation pipes 14. After that, the controller opens and closes the water inlet solenoid valve 6 and the two sets of air inlet solenoid valves 10, and at the same time energizes the fire row 12 and the drive motor 23 to work. Cold water can enter the interior of the heat exchange tube 3 through the water inlet pipe 20, the serpentine pipe 19 and the connecting pipe 5. The flame generated by the fire row 12 can heat the heat exchange tube 3, and the heat exchange tube 3 When the cold water in the upper part is heated to generate steam, the pressure valve 8 can be opened and closed under the influence of the high-pressure steam, and the steam can be discharged through the steam outlet pipe 7. The generated flue gas can enter the interior of the buffer cover 4 through the multiple groups of connecting pipes 13. The output end of the driving motor 23 can drive the main gear 24 to rotate. Since the main gear 24 and the driven gear 25 are meshed with each other, the rotating main gear 24 can drive the driven gear 25 to rotate. The rotating driven gear 25 can drive the serpentine tube 19 to rotate. The rotating serpentine tube 19 can stir the high-temperature flue gas inside the buffer cover 4. Through the multiple groups of heat exchange fins 21, the rotating serpentine tube 19 can fully contact the heat exchange fins 21. High-temperature flue gas, the heat of the high-temperature flue gas can be transferred to the cold water inside it through the serpentine tube 19, and the cold water can be heated and heated. At the same time, the flue gas is cooled. The cooled flue gas can be discharged through multiple groups of installation pipes 14. The set serpentine tube 19 can make the heat exchange structure fully contact with the high-temperature exhaust gas, ensuring that the high-temperature exhaust gas can be fully cooled, thereby improving the practicality of the ultra-low nitrogen gas steam generator. At the same time, according to the above operation, when multiple groups of fans are working, external air can enter the interior of the buffer cover 4 through multiple groups of air holes 16, and multiple groups of filter screens 15 can intercept impurities in this part of the air. Some impurities will be adsorbed on the surface of multiple groups of filter screens 15. When the controller makes the driving motor 23 work, the serpentine tube 19 will rotate with the help of the main gear 24 and the driven gear 25. The rotating serpentine tube 19 rotates the connecting shaft 18 through two groups of pulleys 28 and the transmission belt 29. The rotating connecting shaft 18 can scratch the surface of multiple groups of filter screens 15 through two groups of brush plates 27, and the adsorbed impurities can be pushed away. The intercepting filter 17 and the connecting shaft 18 are set to prevent impurities in the air from entering the interior of the buffer cover 4, thereby ensuring the continuous use of the ultra-low nitrogen gas steam generator.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-low nitrogen gas steam generator, characterized in that: The invention comprises a shell (1), wherein two groups of partitions (2) are installed inside the shell (1), a heat exchange tube (3) is fixedly passed through the shell (1) and the two groups of partitions (2), a buffer cover (4) is installed on the upper part of the shell (1), a plurality of connecting tubes (13) are passed through the inner top surface of the shell (1), a plurality of mounting tubes (14) are fixedly passed through the upper part of the buffer cover (4), and a filter screen (15), an air pressure switch and a fan are installed inside the plurality of mounting tubes (14), a serpentine tube (19) is passed through the inside of the buffer cover (4) through a bearing, an air intake tube (9) is passed through both sides of the shell (1), and the side walls of the two groups of air intake tubes (9) are provided with an air intake solenoid valve (10), a steam outlet pipe (7) is installed at one end of the heat exchange tube (3), and a pressure valve (8) is provided on the side wall of the steam outlet pipe (7), and the serpentine tube (19) is provided with a pressure valve (8) and a pressure valve (9) is provided on the side wall of the steam outlet pipe (7). A connecting pipe (5) is installed between the serpentine tube (19) and the heat exchange tube (3) through a bearing, a water inlet pipe (20) is installed at the other end of the serpentine tube (19) through a bearing, a plurality of groups of heat exchange fins (21) are sleeved on the side wall of the serpentine tube (19), a right-angle plate (22) is installed on one side of the shell (1), a driving motor (23) is installed on one side of the right-angle plate (22), and a main gear (24) is sleeved on the output end of the driving motor (23), a driven gear (25) is sleeved on the side wall of one end of the serpentine tube (19), a plurality of groups of air holes (16) are provided on the end surface of the buffer cover (4), interception filters (17) are arranged inside the plurality of groups of air holes (16), and connecting shafts (18) are installed in front of the plurality of groups of air holes (16), a drawer (11) is passed through the end surface of the shell (1), and a fire grate (12) is installed inside the drawer (11).

2. The ultra-low nitrogen gas steam generator according to claim 1, characterized in that: The main gear (24) and the driven gear (25) are meshed with each other.

3. The ultra-low nitrogen gas steam generator according to claim 1, characterized in that: Two groups of positioning blocks (26) are installed on the end surface of the buffer cover (4), and the two ends of the connecting shaft (18) pass through the two groups of positioning blocks (26) through bearings respectively. Two groups of brush plates (27) are installed on the side wall of the connecting shaft (18). The side wall of one end of the serpentine tube (19) and the side wall of one end of the connecting shaft (18) are both sleeved with pulleys (28), and the side walls of the two groups of pulleys (28) are sleeved with transmission belts (29).

4. The ultra-low nitrogen fuel gas steam generator according to claim 3, characterized in that: The two groups of pulleys (28) are located on the same vertical plane.

5. The ultra-low nitrogen gas steam generator according to claim 1, characterized in that: A handle is installed on the end surface of the drawer (11).

6. The ultra-low nitrogen gas steam generator according to claim 1, characterized in that: A controller is installed on one side of the housing (1), and the controller is electrically connected to the water inlet solenoid valve (6), two groups of the air inlet solenoid valves (10), the fire grate (12), the drive motor (23), multiple groups of the air pressure switches, and multiple groups of the fans through electric wires.

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