Steam generating pipeline of steam generator

Abstract

The utility model provides a steam generating pipeline of a steam generator, and belongs to the technical field of heat energy engineering. The technical problems of low gas combustion utilization rate, low heating efficiency and the like in the prior art are solved. The steam generation pipeline of the steam generation furnace comprises an axial coil pipe which extends in the spiral axial direction, at least one end of the axial coil pipe is provided with a radial coil pipe set, one end of the axial coil pipe and one end of the radial coil pipe set are connected into a whole, the radial coil pipe set comprises a plurality of radial coil pipes distributed in the axial direction, and the radial coil pipes are arranged in the radial coil pipe set. And the inner end of one radial coil pipe of two axially adjacent radial coil pipes is connected with the outer end of the other radial coil pipe into a whole. The utility model has the advantages of high heating efficiency, high gas utilization rate, lower operation cost, long service life and the like, and is provided with a monitoring mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal energy engineering, and relates to a steam generating device, in particular to a steam generating pipeline of a steam generator. Background Art

[0002] Steam generators are mechanical devices that use the thermal energy of fuel or other energy sources to heat water into steam. Existing technologies often suffer from low gas combustion efficiency and low heating efficiency. To address this, researchers have conducted extensive research and proposed various solutions.

[0003] For example, a Chinese patent document discloses a gas-fired steam generator [Application No.: 201721457053.1], which includes a housing, a water inlet, a heating coil, a combustion chamber, a burner, and a steam outlet. The water inlet and steam outlet are fixed to the upper end of the housing. A pressurized water pump is installed on the water inlet. After entering the housing, the water inlet is connected to a water inlet pipe, which is connected to the heating coil. The heating coil is tightly coiled outside the combustion chamber. The heating coil is connected to the steam outlet. The air inlet and gas inlet are respectively connected to the combustion chamber, and the gas inlet is connected to the burner in the combustion chamber. This device has high gas combustion utilization and high heating efficiency, and can heat and generate steam quickly. The device uses a spiral heating coil, and the water heating process is long.

[0004] Although the above solution has increased heating efficiency to a certain extent, the gas utilization rate is still low. In addition, the output pressure and temperature of steam are limited and cannot meet higher demands. Summary of the Invention

[0005] The purpose of the utility model is to solve the above problems and provide a steam generating pipeline for a steam generator with high heating efficiency, high gas utilization rate and high steam output quality.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: the steam generation pipeline of the steam generator includes an axial coil extending axially in a spiral shape, a radial coil group is provided on at least one end of the axial coil, one end of the axial coil is integrally connected to one end of the radial coil group, the radial coil group includes a plurality of radial coils distributed along the axial direction, and the inner end of one radial coil of two axially adjacent radial coils is integrally connected to the outer end of the other radial coil.

[0007] The spirally extending axial coil is designed to directly contact an open flame for heating. The overlapping spiral shape provides a larger contact area with the heat source, thereby improving heating efficiency. The radial coils at the ends of the coils allow for even greater heat utilization when the heat source is within the axial coils, thereby increasing gas utilization and enhancing steam output quality.

[0008] In the steam generation pipeline of the aforementioned steam generator, radial coil groups are provided at both ends of the axial coil. This structure increases the contact area between the steam and the heat source, thereby improving heat exchange efficiency and making steam generation more efficient. It also makes the entire steam generation pipeline more stable, enhancing its ability to withstand pressure and temperature fluctuations and extending its service life.

[0009] In the steam generating pipeline of the steam generator, the number of radial coils in the radial coil group at one end is an odd number, and the number of radial coils in the radial coil group at the other end is an even number;

[0010] Alternatively, the radial coils of the radial coil groups at both ends have an even number of radial coils;

[0011] Alternatively, the radial coil groups at both ends can have an odd number of radial coils. Properly configuring the number of radial coils enhances system stability, ensuring even steam distribution within the pipeline and preventing localized overheating or overcooling. It also enables multi-directional heat exchange, improving heat transfer efficiency and ensuring more uniform and stable steam generation and output.

[0012] In the steam generating pipeline of the steam generator, two adjacent radial coils are radially staggered, which allows water to exchange heat more fully when flowing through each radial coil, thereby improving heat exchange efficiency.

[0013] In the steam generation piping of the aforementioned steam generator, the axial coils and / or radial coils are made of finned tubes. The presence of the fins significantly increases the heat exchange area, thereby improving heat exchange efficiency and enabling more efficient steam generation. Furthermore, the relatively compact structure of the finned tubes enables efficient heat exchange within a limited space, saving equipment space and improving space utilization.

[0014] In the steam generation pipeline of the steam generator, the radial coils are made of finned tubes, with the fins of two adjacent radial coils being inverted to fit together. This inverted fin design helps increase the connection strength between the two adjacent radial coils, thereby improving the structural stability of the entire radial coil assembly.

[0015] In the steam generation pipeline of the steam generator, the axial coil is made of finned tubes, and the fins of two adjacent axial coils fit together and are inverted. The inverted fin design further enhances the heat exchange effect, and the fit between the fins promotes heat transfer.

[0016] In the steam generating pipeline of the steam generator, the inclination includes two tilted portions evenly distributed along the circumference of the fin;

[0017] Alternatively, the inversion structure includes two evenly spaced cut surfaces around the circumference of the fin. The inverted portion or cut surface design increases the contact area between the fin and the surrounding medium, thereby improving heat exchange efficiency. Furthermore, this design effectively prevents damage or dislocation of the fins when subjected to external forces, thereby maintaining the stability and service life of the fins.

[0018] In the steam generation pipeline of the steam generator described above, the radial coils are hollow in the middle; the central axis of the axial coils is parallel to the bottom surface. A first water level gauge is located one-third of the way from the bottom surface of the axial and / or radial coils, and a second water level gauge is located two-thirds of the way from the bottom surface of the axial and / or radial coils. Accurate water level monitoring helps improve operational efficiency. When the water level is too low, water can be replenished promptly to avoid equipment shutdown due to water shortage. When the water level is too high, the water flow rate can be adjusted to prevent equipment failure caused by the high water level.

[0019] In the steam generation pipeline of the steam generator, the axial coils and / or radial coils are provided with strip-shaped spiral vanes. The strip-shaped spiral vanes create more eddies and turbulence when the fluid flows within the coils, increasing the contact area and contact time between the fluid and the coil walls, thereby improving heat exchange efficiency.

[0020] Compared with existing technologies, the steam generation pipeline of this steam generator has the following advantages: 1. High heating efficiency, capable of outputting high-temperature, high-pressure steam. 2. High gas utilization, resulting in lower operating costs. 3. A water level monitoring design ensures normal equipment operation. 4. High structural strength, resulting in a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram provided by the utility model.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure provided by the utility model.

[0023] Figure 3 It is a schematic diagram of the local structure of the finned tube provided by the utility model.

[0024] Figure 4 It is a schematic diagram of the local structure of the strip spiral sheet provided by the utility model.

[0025] Figure 5 This is a structural diagram of embodiment 2 provided by the present utility model.

[0026] Figure 6This is a structural diagram of embodiment 3 provided by the present utility model.

[0027] In the figure, the axial coil 1, the radial coil group 2, the radial coil 21, the fin 3, the inverted portion 31, the tilted portion 32, the cutting surface 33, the first water level gauge 41, the second water level gauge 42, and the strip spiral sheet 5. DETAILED DESCRIPTION

[0028] Example 1

[0029] like Figures 1 to 4 As shown, a steam generation pipeline of a steam generator includes an axial coil 1 extending axially in a spiral shape. A radial coil group 2 is provided on at least one end of the axial coil 1. One end of the axial coil 1 is integrally connected to one end of the radial coil group 2. The radial coil group 2 includes a plurality of radial coils 21 distributed along the axial direction, and the inner end of one radial coil 21 of two axially adjacent radial coils 21 is integrally connected to the outer end of the other radial coil 21.

[0030] In this embodiment, the spirally extending axial coil 1 and the radial coil group 2 at its end both directly contact the heat source. Their design maximizes contact area with the heat source, thereby improving heating efficiency. The heat source can be positioned inside the axial coil 1. By placing the radial coil group 2 at the end of the axial coil 1, a semi-sealed cavity is formed within the axial coil 1, allowing for greater accumulation and absorption of heat from the heat source, thereby increasing gas utilization and enhancing steam output quality.

[0031] More specifically, radial coil groups 2 are provided at both ends of the axial coil 1 .

[0032] More specifically, the number of radial coils 21 in the radial coil groups 2 at both ends is an even number: the number of radial coils 21 in the radial coil group 2 at one end is two, and the number of radial coils 21 in the radial coil group 2 at the other end is four.

[0033] More specifically, two adjacent radial coils 21 are radially staggered.

[0034] More specifically, the axial coil 1 and the radial coil 21 are made of finned tubes.

[0035] More specifically, the radial coil 21 is made of finned tubes, and the fins 3 of two radially adjacent tube circles are fitted together by falling 31 .

[0036] More specifically, the axial coil 1 is made of finned tubes, and the fins 3 of two axially adjacent tube circles fit together and are provided with indentations 31 .

[0037] More specifically, the prostration 31 includes two cutting surfaces 33 arranged on the circumference of the fin 3 and evenly distributed along the circumference.

[0038] More specifically, the middle of the radial coil 21 is left hollow; the central axis of the axial coil 1 is parallel to the bottom surface, the radial coil 21 is provided with a first water level gauge 41 at 1 / 3 from its bottom surface, and the radial coil 21 is provided with a second water level gauge 42 at 2 / 3 from its bottom surface.

[0039] In this embodiment, the position of the first water level gauge 41 is the lowest water level that meets the starting conditions, and the position of the second water level gauge 42 is the highest water level in the pipe body during the steam generation process. If the water level is lower than the first water level gauge 41, there will be a risk of dry burning and damaging the axial coil 1 and the radial coil group 2. If the water level is higher than the position of the second water level gauge 42, it may cause the water in the pipe body to overflow.

[0040] More specifically, strip-shaped spiral sheets 5 are provided in the axial coil 1 and the radial coil 21 .

[0041] In this embodiment, the central axis of the strip-shaped spiral sheet 5 is coaxial with the corresponding axial coil 1 and radial coil 21 .

[0042] The working principle of this embodiment is that the axial coil 1 and the radial coil group 2 are arranged as a whole inside the steam generator, a water inlet is provided at one end of the tube body, and a steam outlet is provided at the other end. The water inlet is provided at the bottom of the tube body and connected to the radial coil group 2 at one end, and the steam outlet is provided at the top of the tube body and connected to the radial coil group 2 at the other end.

[0043] Before heating the axial coil 1 and the radial coil group 2 , first check whether the first water level gauge 41 is conductive. If not, add water until the water level reaches the position of the second water level gauge 42 .

[0044] After confirming that the water level meets the startup conditions, flowing water is input from the radial coil group 2 at one end to the axial coil 1. Heated by the combustion of gas, the flowing water in the pipe body turns into water vapor and is output from the radial coil group 2 at the other end. By adjusting the combustion power of the gas, the output of high-temperature and high-pressure steam can be controlled.

[0045] Example 2

[0046] The content of this embodiment is basically the same as that of the first embodiment, except that: Figure 5 As shown, the protrusion 31 includes two tilted portions 32 arranged on the circumference of the fin 3 and evenly distributed along the circumference.

[0047] In this embodiment, the fin 3 is provided with a tilted portion 32 in the circumferential direction, which can make the tube bodies fit more closely, improve the overall structural strength and the steam generation efficiency, and has the characteristic of simple processing.

[0048] Example 3

[0049] The content of this embodiment is basically the same as that of the first embodiment, except that: Figure 6 As shown, the number of radial coils 21 of the radial coil group 2 at one end is an odd number, specifically five, and the number of radial coils 21 of the radial coil group 2 at the other end is an even number, specifically two.

[0050] In this embodiment, different numbers of radial coils can be selected according to different working conditions. By adjusting the number of radial coils, the flow of steam and water can be optimized, eddy currents and dead zones can be reduced, and heat exchange efficiency can be improved.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0052] Although this document frequently uses terms such as axial coil, radial coil assembly, radial coil, fin, lodging, tilted portion, cutting surface, first water level gauge, second water level gauge, and strip spiral, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention. Any interpretation of them as additional limitations is contrary to the spirit of the present invention.

Claims

1. A steam generating pipeline of a steam generator, characterized in that: The invention comprises an axial coil (1) extending axially in a spiral shape, wherein a radial coil group (2) is provided on at least one end of the axial coil (1), one end of the axial coil (1) is integrally connected to one end of the radial coil group (2), and the radial coil group (2) comprises a plurality of radial coils (21) distributed along the axial direction, and the inner end of one radial coil (21) of two axially adjacent radial coils (21) is integrally connected to the outer end of the other radial coil (21).

2. The steam generating pipeline of the steam generator according to claim 1, characterized in that: Both ends of the axial coil (1) are provided with radial coil groups (2).

3. The steam generating pipeline of the steam generator according to claim 2, characterized in that: The number of radial coils (21) of the radial coil group (2) at one end is an odd number, and the number of radial coils (21) of the radial coil group (2) at the other end is an even number; Alternatively, the number of radial coils (21) in the radial coil groups (2) at both ends is an even number; Alternatively, the numbers of radial coils (21) in the radial coil groups (2) at both ends are odd numbers.

4. The steam generating pipeline of the steam generator according to claim 3, characterized in that: Two adjacent radial coils (21) are arranged in a radially staggered manner.

5. The steam generating pipeline of the steam generator according to claim 1, 2, 3 or 4, characterized in that: The axial coil (1) and / or radial coil (21) are made of finned tubes.

6. The steam generating pipeline of the steam generator according to claim 5, characterized in that: The radial coil (21) is made of a finned tube, and the fins (3) of two radially adjacent tube circles are fitted together by falling over (31).

7. The steam generating pipeline of the steam generator according to claim 6, characterized in that: The axial coil (1) is made of a finned tube, and the fins (3) of two axially adjacent tube circles fit together and are provided with lodgings (31).

8. The steam generating pipeline of the steam generator according to claim 7, characterized in that: The lodging (31) includes two tilted portions (32) arranged on the circumference of the fin (3) and evenly distributed along the circumference; Alternatively, the lodging (31) includes two cutting surfaces (33) arranged on the circumference of the fin (3) and evenly distributed along the circumference.

9. The steam generating pipeline of the steam generator according to claim 1, 2, 3 or 4, characterized in that: The middle of the radial coil (21) is left hollow; the central axis of the axial coil (1) is parallel to the bottom surface; the axial coil (1) and / or the radial coil (21) is provided with a first water level gauge (41) at a distance of 1 / 3 from the bottom surface; and the axial coil (1) and / or the radial coil (21) is provided with a second water level gauge (42) at a distance of 2 / 3 from the bottom surface.

10. The steam generating pipeline of the steam generator according to claim 1, 2, 3 or 4, characterized in that: The axial coil (1) and / or the radial coil (21) are provided with strip-shaped spiral sheets (5).

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