Evaporation structure of vertical steam generator

Abstract

The invention relates to the technical field of steam generators, in particular to a vertical steam generator evaporation structure which comprises an inner evaporation frame, a steam collecting box and two outer evaporation frames, the two outer evaporation frames are fixedly installed at the front end and the rear end of the inner evaporation frame respectively and communicate with the inner evaporation frame, and the steam collecting box is arranged in the inner evaporation frame. The evaporation inner frame comprises two energy-saving outer frames located on the outer side and a plurality of energy-saving inner frames arranged between the two energy-saving outer frames. Compared with the prior art, by means of the energy-saving outer frame and the energy-saving inner frame in the evaporation inner frame, a good smoke flow channel can be formed, waste heat of high-temperature smoke generated after combustion can be effectively utilized, the temperature of exhausted smoke is effectively reduced, fuel energy is saved, the evaporation amount of steam is greatly increased in a limited space, and the energy-saving effect is good. The steam output efficiency is improved, and the problem that the size of the steam generator is too large and too high due to the fact that the height of a traditional vertical steam generator needs to be increased can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of steam generators, in particular to an evaporation structure of a vertical steam generator. Background Art

[0002] A steam generator is a heat energy conversion device that heats the water flowing in the tube into steam and quickly outputs the steam to the outside. As the amount of steam increases, its volume and water capacity must also increase. When the water capacity exceeds 30L, it falls into the category of boilers of special equipment that need to be included in the national quality and technical supervision and management. Therefore, in order to ensure the safety of use, its water capacity is generally set within 30L, which leads to the limitation of its evaporation capacity (steam production).

[0003] At present, in the prior art, the inventors have found that traditional steam generators have certain drawbacks in use. For example, traditional heated water pipes are generally only arranged on both sides of the combustion chamber (or combustion cavity), and the heat generated by the combustion in the combustion chamber is used to heat the water pipes, and the high-temperature flue gas (or hot air) generated after heating is discharged. In order to increase the evaporation amount, it is necessary to increase the length or height of the combustion chamber, resulting in its volume and size being too large. If the flue gas temperature is too high, it is generally only used for heat recovery and cooling by a cooling water tank, but the effect is not good. For this reason, the present invention proposes an evaporation structure of a vertical steam generator. Summary of the invention

[0004] The object of the present invention is to provide an evaporation structure of a vertical steam generator to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an evaporation structure of a vertical steam generator, comprising an evaporation inner frame, a steam collecting box and an evaporation outer frame, the number of the evaporation outer frames is two, the two evaporation outer frames are respectively fixedly mounted at the front and rear ends of the evaporation inner frame, and the evaporation outer frame is connected to the evaporation inner frame, the evaporation inner frame comprises two energy-saving outer frames located on the outside and a plurality of energy-saving inner frames arranged between the two energy-saving outer frames, heat exchange chambers are arranged between adjacent energy-saving inner frames and between energy-saving outer frames and energy-saving inner frames, the plurality of heat exchange chambers constitute a smoke exhaust duct, and the upper end of the smoke exhaust duct is connected to a smoke pipe, the end of the smoke exhaust duct away from the smoke pipe is connected to a combustion chamber, the upper ends of the evaporation outer frame and the evaporation inner frame are both connected to the steam collecting box through a steam pipe, and an exhaust pipe is installed at the upper end of the steam collecting box.

[0006] As a preferred technical solution of the present invention, the evaporation outer frame includes a plurality of water cooling tubes, the top and bottom of the water cooling tubes are fixedly connected with connecting water pipes, and the connecting water pipes at the bottom are provided with a water inlet pipe.

[0007] As a preferred technical solution of the present invention, the energy-saving outer frame includes a plurality of energy-saving outer tubes, the top and bottom of the energy-saving outer tubes are fixedly connected with connecting outer tubes, and the connecting outer tubes are connected to the connecting water pipes.

[0008] As a preferred technical solution of the present invention, the energy-saving inner frame includes a plurality of energy-saving inner tubes, the top and bottom of the energy-saving inner tubes are fixedly connected with connecting inner tubes, and the connecting inner tubes are connected to the connecting water pipes.

[0009] As a preferred technical solution of the present invention, a first water-cooled outer wall is fixedly installed on the energy-saving outer frame, and the first water-cooled outer wall is arranged on the outer surfaces of multiple energy-saving outer tubes, and a water-cooled inner wall is fixedly installed on each of the energy-saving inner frames, and a smoke outlet is opened on each of the water-cooled inner walls. The multiple smoke outlets are staggered so that the smoke exhaust duct is arranged in a circuitous and return form.

[0010] As a preferred technical solution of the present invention, the outer surface of the connecting water pipe is fixedly connected to a second water-cooled outer wall, a sealing cover is fixedly connected between the two evaporation outer frames, and a pipe hole for accommodating a flue gas pipe is opened on the top of the sealing cover.

[0011] As a preferred technical solution of the present invention, it also includes a heat exchange water tank, which is arranged above the evaporator inner frame and the evaporator outer frame, the flue gas pipe runs through the interior of the heat exchange water tank and extends to the outside of the heat exchange water tank, and the heat exchange water tank is installed with a return pipe, an overflow pipe and a water filling pipe, and the return pipe is connected to the water inlet pipe through a water supply pipe.

[0012] As a preferred technical solution of the present invention, a combustion base is fixedly installed at the bottom of the evaporation inner frame and the evaporation outer frame, and the combustion chamber is arranged inside the combustion base.

[0013] As a preferred technical solution of the present invention, it also includes a liquid level gauge, the upper end of the liquid level gauge is connected to the bottom of the steam collecting box, and the lower end of the liquid level gauge is connected to the bottom of the evaporation outer frame.

[0014] As a preferred technical solution of the present invention, a safety valve connecting pipe and a pressure controller connecting pipe are also installed on the steam collecting box, and a downwardly inclined downpipe is fixedly installed at the lower end of the steam collecting box, and the lower end of the downpipe is connected to the bottom of the evaporation outer frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The evaporation structure of a vertical steam generator of the present invention can burn and heat water therein by arranging an evaporation inner frame and an evaporation outer frame. The heated water can form steam and be collected in a steam collecting box, and finally be discharged through an exhaust pipe. The energy-saving outer frame and the energy-saving inner frame in the evaporation inner frame can form a good smoke flow channel, so that the waste heat of the high-temperature flue gas generated after combustion can be effectively utilized, which not only effectively reduces the temperature of the flue gas after exhaust and saves fuel energy, but also can greatly increase the evaporation amount of steam in a limited space and improve the steam output efficiency. At the same time, it can solve the problem that the traditional need to increase the height of the vertical steam generator leads to the excessive size and height of the steam generator.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the evaporation outer frame of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the energy-saving inner frame of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the energy-saving external frame of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the sealing cover of the present invention;

[0023] In the figure: 1. evaporation inner frame; 11. energy-saving outer frame; 111. connecting outer pipe; 112. energy-saving outer pipe; 113. first water-cooled outer wall; 12. energy-saving inner frame; 121. connecting inner pipe; 122. energy-saving inner pipe; 123. water-cooled inner wall; 124. flue gas outlet; 2. evaporation outer frame; 21. connecting water pipe; 22. water-cooling pipe; 23. second water-cooled outer wall; 24. water inlet pipe; 3. steam collecting box; 31. steam pipe; 32. exhaust pipe; 33. safety valve connecting pipe; 34. pressure controller connecting pipe; 35. downpipe; 4. heat exchange water tank; 41. flue gas pipe; 42. return pipe; 43. overflow pipe; 44. water adding pipe; 5. liquid level gauge; 6. combustion base; 60. flue gas duct; 61. combustion chamber; 62. heat exchange cavity; 7. sealing cover; 70. pipe hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5In the present embodiment, a vertical steam generator evaporation structure is provided, including an evaporation inner frame 1, a steam collecting box 3 and an evaporation outer frame 2. The number of the evaporation outer frames 2 is two, and the two evaporation outer frames 2 are respectively fixedly mounted on the front and rear ends of the evaporation inner frame 1, and the evaporation outer frame 2 is connected to the evaporation inner frame 1. The evaporation inner frame 1 includes two energy-saving outer frames 11 located on the outside and a plurality of energy-saving inner frames 12 arranged between the two energy-saving outer frames 11. A heat exchange chamber 62 is arranged between adjacent energy-saving inner frames 12 and between the energy-saving outer frames 11 and the energy-saving inner frames 12. The plurality of heat exchange chambers 62 constitute a smoke exhaust duct 60, and the upper end of the smoke exhaust duct 60 is connected to a smoke pipe 41. The end of the smoke exhaust duct 60 away from the smoke pipe 41 is connected to the combustion chamber 61. The upper ends of the evaporation outer frame 2 and the evaporation inner frame 1 are connected to the steam collecting box 3 through the steam pipe 31. The upper end of the steam collecting box 3 is installed with an exhaust pipe 32. The evaporation outer frame 2 includes a plurality of water-cooling pipes 22. The top and bottom of the water-cooling pipe 22 are fixedly connected to the connecting water pipe 21. The connecting water pipe 21 at the bottom is provided with a water inlet pipe 24. The energy-saving outer frame 11 includes a plurality of energy-saving outer pipes 112. The top and bottom of the energy-saving outer pipe 112 are fixedly connected to the connecting outer pipe 111, and the connecting outer pipe 111 is connected to the connecting water pipe 21. The energy-saving inner frame 12 includes a plurality of energy-saving inner pipes 122. The top and bottom of the energy inner tube 122 are fixedly connected with the connecting inner tube 121, and the connecting inner tube 121 is connected with the connecting water pipe 21. The energy-saving outer frame 11 is fixedly installed with a first water-cooled outer wall 113, and the first water-cooled outer wall 113 is arranged on the outer surface of multiple energy-saving outer tubes 112. Each energy-saving inner frame 12 is fixedly installed with a water-cooled inner wall 123, and each water-cooled inner wall 123 is provided with a flue gas outlet 124. The multiple flue gas outlets 124 are arranged in a staggered manner, so that the exhaust duct 60 is arranged in a circuitous and return shape. The bottom of the evaporation inner frame 1 and the evaporation outer frame 2 is fixedly installed with a combustion base 6, and the combustion chamber 61 is arranged inside the combustion base 6. By setting the evaporation inner frame 1 and the evaporation outer frame 2, the water inside can be burned and heated. The heated water can form steam and be collected in the steam collecting box 3, and finally discharged through the exhaust pipe. By utilizing the energy-saving outer frame 11 and the energy-saving inner frame 12 in the evaporation inner frame 1, a good smoke flow channel can be formed, so that the waste heat of the high-temperature flue gas generated after combustion can be effectively utilized, which not only effectively reduces the temperature of the flue gas after exhaust and saves fuel energy, but also can greatly increase the evaporation amount of steam in a limited space and improve the steam output efficiency. At the same time, it can solve the problem that the traditional need to increase the height of the vertical steam generator causes the volume of the steam generator to be too large and too high.

[0028] When water is passed into the evaporation outer frame 2 through the water inlet pipe 24, the water will quickly enter the connecting water pipe 21 and the water cooling pipe 22, and simultaneously enter the energy-saving outer frame 11 and the energy-saving inner frame 12 of the evaporation inner frame 1, ignite the fuel in the combustion chamber 61 in the combustion base 6, and heat the water in the energy-saving outer pipe 112 and the energy-saving inner pipe 122, as well as the water cooling pipe 22 near the combustion chamber 61. The evaporated water vapor after heating is collected into the steam collecting box 3 through the steam pipe 31, and finally discharged through the exhaust pipe 32, and the heated water vapor is generated. The high-temperature flue gas will enter the heat exchange cavity 62 near the combustion chamber 61 through the flue gas port 124 on the energy-saving inner frame 12, so that the high-temperature flue gas can perform good heat exchange with the energy-saving inner tube 122 and the water-cooling tube 22 around it, so that the water inside it can also be well evaporated, which not only effectively reduces the temperature of the flue gas after exhaust and saves fuel energy, but also can greatly increase the evaporation amount of steam in a limited space and improve the steam production efficiency. Finally, the cooled high-temperature flue gas enters the heat exchange water tank 4 through the flue gas pipe 41.

[0029] In the present embodiment, a heat exchange water tank 4 is further included. The heat exchange water tank 4 is arranged above the evaporation inner frame 1 and the evaporation outer frame 2. The flue gas pipe 41 runs through the interior of the heat exchange water tank 4 and extends to the outside of the heat exchange water tank 4. A return water pipe 42, an overflow pipe 43 and a water supply pipe 44 are installed on the heat exchange water tank 4. The return water pipe 42 is connected to the water inlet pipe 24 through a water supply pipe. When the high-temperature flue gas enters the heat exchange water tank 4, it can further exchange heat with the cold water in the heat exchange water tank 4, so that the temperature of the flue gas can be further reduced, and the water in the heat exchange water tank 4 can be well preheated, which effectively reduces the heat required for evaporation work and improves its energy saving and evaporation effects.

[0030] In this embodiment, the outer surface of the connecting water pipe 21 is fixedly connected to the second water-cooled outer wall 23, a sealing cover 7 is fixedly connected between the two evaporation outer frames 2, and a pipe hole 70 for accommodating the flue gas pipe 41 is opened on the top of the sealing cover 7. The sealing cover 7 can be used to seal the heat inside the steam generator.

[0031] In this embodiment, a liquid level gauge 5 is also included. The upper end of the liquid level gauge 5 is connected to the bottom of the steam collecting box 3, and the lower end of the liquid level gauge 5 is connected to the bottom of the evaporation outer frame 2. Through the liquid level gauge 5, the water levels in the energy-saving outer pipe 112, the energy-saving inner pipe 122 and the water-cooling pipe 22 can be monitored in real time, so that timely water replenishment can be achieved.

[0032] In this embodiment, a safety valve connecting pipe 33 and a pressure controller connecting pipe 34 are also installed on the steam collecting box 3. A downpipe 35 arranged in a downward tilt is fixedly installed at the lower end of the steam collecting box 3, and the lower end of the downpipe 35 is connected to the bottom of the evaporation outer frame 2. The safety valve connecting pipe 33 is used for the installation of the safety valve, and the pressure controller connecting pipe 34 is used for the installation of the pressure controller. The safety valve and the pressure controller can be used to achieve good control and regulation of the pressure of the water vapor space in the steam generator. The downpipe 34 can be used to make the water generated during condensation flow back into the evaporation outer frame 2.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An evaporation structure of a vertical steam generator, characterized in that: The invention comprises an evaporation inner frame (1), a steam collecting box (3) and an evaporation outer frame (2), wherein the number of the evaporation outer frames (2) is two, the two evaporation outer frames (2) are respectively fixedly mounted at the front and rear ends of the evaporation inner frame (1), and the evaporation outer frame (2) is connected to the evaporation inner frame (1), and the evaporation inner frame (1) comprises two energy-saving outer frames (11) located at the outside and a plurality of energy-saving inner frames (12) arranged between the two energy-saving outer frames (11), and the energy-saving inner frames (12) are arranged between adjacent energy-saving inner frames (12) and between adjacent energy-saving outer frames (11). A heat exchange chamber (62) is provided between the frame (11) and the energy-saving inner frame (12); a plurality of the heat exchange chambers (62) form a smoke exhaust duct (60); and the upper end of the smoke exhaust duct (60) is connected to a smoke pipe (41); the end of the smoke exhaust duct (60) away from the smoke pipe (41) is connected to a combustion chamber (61); the upper ends of the evaporation outer frame (2) and the evaporation inner frame (1) are connected to the steam collecting box (3) through a steam pipe (31); and the upper end of the steam collecting box (3) is installed with a steam exhaust pipe (32).

2. The evaporation structure of a vertical steam generator according to claim 1, characterized in that: The evaporation outer frame (2) comprises a plurality of water cooling pipes (22), the top and bottom of each of the water cooling pipes (22) are fixedly connected to a connecting water pipe (21), and a water inlet pipe (24) is provided on the connecting water pipe (21) at the bottom.

3. The evaporation structure of a vertical steam generator according to claim 2, characterized in that: The energy-saving outer frame (11) comprises a plurality of energy-saving outer tubes (112), the top and bottom of each of the energy-saving outer tubes (112) are fixedly connected to a connecting outer tube (111), and the connecting outer tube (111) is in communication with a connecting water pipe (21).

4. The evaporation structure of a vertical steam generator according to claim 3, characterized in that: The energy-saving inner frame (12) comprises a plurality of energy-saving inner tubes (122), the top and bottom of each of the energy-saving inner tubes (122) are fixedly connected to a connecting inner tube (121), and the connecting inner tube (121) is in communication with a connecting water pipe (21).

5. The evaporation structure of a vertical steam generator according to claim 4, characterized in that: A first water-cooled outer wall (113) is fixedly mounted on the energy-saving outer frame (11), and the first water-cooled outer wall (113) is arranged on the outer surfaces of a plurality of energy-saving outer tubes (112). A water-cooled inner wall (123) is fixedly mounted on each of the energy-saving inner frames (12), and a smoke outlet (124) is provided on each of the water-cooled inner walls (123). The plurality of smoke outlets (124) are arranged in a staggered manner, so that the smoke exhaust duct (60) is arranged in a circuitous and return form.

6. The evaporation structure of a vertical steam generator according to claim 2, characterized in that: The outer surface of the connecting water pipe (21) is fixedly connected to a second water-cooled outer wall (23), a sealing cover (7) is fixedly connected between the two evaporation outer frames (2), and a pipe hole (70) for accommodating a smoke pipe (41) is provided at the top of the sealing cover (7).

7. The evaporation structure of a vertical steam generator according to claim 2, characterized in that: The invention also comprises a heat exchange water tank (4), wherein the heat exchange water tank (4) is arranged above the evaporation inner frame (1) and the evaporation outer frame (2), wherein the flue gas pipe (41) passes through the interior of the heat exchange water tank (4) and extends to the exterior of the heat exchange water tank (4), and a return water pipe (42), an overflow pipe (43) and a water supply pipe (44) are installed on the heat exchange water tank (4), and the return water pipe (42) is connected to the water inlet pipe (24) through a water supply pipe.

8. The evaporation structure of a vertical steam generator according to claim 1, characterized in that: A combustion base (6) is fixedly mounted on the bottom of the evaporation inner frame (1) and the evaporation outer frame (2), and a combustion chamber (61) is arranged inside the combustion base (6).

9. The evaporation structure of a vertical steam generator according to claim 1, characterized in that: It also comprises a liquid level meter (5), the upper end of which is connected to the bottom of the steam collecting box (3), and the lower end of which is connected to the bottom of the evaporation outer frame (2).

10. The evaporation structure of a vertical steam generator according to claim 1, characterized in that: A safety valve connecting pipe (33) and a pressure controller connecting pipe (34) are also installed on the steam collecting box (3), and a downwardly inclined downpipe (35) is fixedly installed at the lower end of the steam collecting box (3), and the lower end of the downpipe (35) is connected to the bottom of the evaporation outer frame (2).

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