In-tank steam heating system
By installing a ring-shaped cross-nozzle inside the tank, the problems of low heating efficiency, high noise, and severe vibration in existing heating technologies are solved, achieving rapid, stable, and safe heating, and reducing the risk of equipment damage and personal injury.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-10
AI Technical Summary
Existing heating technologies suffer from low heating efficiency, high noise, severe vibration, and the risk of equipment damage, which affect production efficiency and the health of operators.
The system employs a ring-tube cross-jet technology, which involves setting up a ring tube inside the tank and evenly distributing multiple first and second nozzles to allow steam to be ejected from different angles in the form of small bubbles, thereby improving heat exchange efficiency and reducing vibration and noise.
It achieves rapid heating, reduces noise and vibration, minimizes equipment damage, and ensures stable operation of the enterprise and personnel safety.
Smart Images
Figure CN223983701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating technology in chemical or metallurgical industries, and specifically to an in-tank steam heating system. Background Technology
[0002] In the field of vanadium chemical production, the vanadium trioxide leaching process (three-dip four-wash intermittent leaching) is one of the core production links. Its core lies in soaking and washing the roasted clinker with high-temperature hot water (90℃) to extract qualified leachate.
[0003] Currently, this process relies on steam heating of the production water in large water tanks. The service life of the large heating tank is related to the occupational health of the operators. Its efficient and stable operation directly determines whether the main production line of the entire tank leaching process can operate normally. However, the existing heating technology has significant defects, which seriously restrict production efficiency, equipment safety and personnel health. Specifically, it manifests as the following technical pain points: (1) Low heating efficiency: The existing technology uses DN80 / DN50 stainless steel pipes to be vertically inserted into the tank (middle and side) for oblique steam injection. The steam distribution is uneven and the heat exchange is insufficient, resulting in a slow rise in water temperature, which slows down the production rhythm of leachate and causes large fluctuations in the output of qualified liquid. (2) Vibration and noise hazards: The steam is concentrated in the form of direct current large particle bubbles, which generates high-frequency mechanical vibration (amplitude exceeding 0.5mm) and continuous noise (≥90dB). This not only accelerates the fatigue of the tank structure, but also causes hearing damage and occupational health risks to the operators. (3) Equipment cavitation and structural damage: One-way steam impact causes local cavitation at the bottom / wall of the tank, increasing the cracking rate of tank wall welds by 60% and leading to frequent bottom plate penetration accidents. At the same time, vibration is transmitted to the cement foundation, causing foundation pulverization and settlement, further aggravating the leakage risk. (4) Maintenance costs and safety risks: High-frequency maintenance (such as welding repair and bottom plate replacement) in confined spaces is difficult and time-consuming, and high-temperature water leakage can easily cause scalding accidents, increasing the overall maintenance cost by more than 25%.
[0004] Current industry solutions mostly focus on localized improvements (such as adding buffer plates or adjusting steam pressure), but fail to systematically address the problems of uneven steam distribution and energy dissipation. Therefore, there is an urgent need to design an assembled steam loop cross-jet blowing technology. Utility Model Content
[0005] In view of this, the present invention provides an in-tank steam heating system, which can at least solve the technical problems of low heating efficiency, high noise and easy damage caused by vibration of existing heating devices.
[0006] This utility model discloses a steam heating system, comprising: a tank, a ring pipe, and a steam inlet pipe. A cover plate is provided on the upper part of the tank, and the cover plate has an air inlet and an air outlet. The ring pipe is horizontally disposed inside the tank and coaxially arranged with the tank. Multiple first nozzles and multiple second nozzles are evenly arranged circumferentially on the ring pipe. The spray direction of the first nozzles forms a first angle with respect to the horizontal plane, and the spray direction of the second nozzles forms a second angle with respect to the horizontal plane, the first angle being different from the second angle. One end of the steam inlet pipe is connected to an external steam delivery pipeline, and the other end of the steam inlet pipe extends into the tank from the air inlet and is connected to the interior of the ring pipe.
[0007] In some embodiments, the first angle is 0°~5°, the second angle is 30°~60°, the spray direction of the first nozzle is along the horizontal plane or inclined upward relative to the horizontal plane, the spray direction of the second nozzle is inclined upward relative to the horizontal plane, and the spray directions of the first nozzle and the second nozzle are directed toward the axis of the tank.
[0008] In some embodiments, the first nozzle is installed inside the annular tube, and the second nozzle is installed between the top of the annular tube and the installation position of the first nozzle.
[0009] In some embodiments, the first nozzle and the second nozzle are alternately arranged along the circumference of the annular tube, and the circumferential distance from any first nozzle to the two adjacent second nozzles is the same.
[0010] In some embodiments, the ring pipe includes multiple pipe segments, each of which is detachable, and the multiple pipe segments are connected by a connecting sleeve.
[0011] In some embodiments, the steam inlet pipe includes a main pipe and a plurality of branch pipes. The main pipe passes through the air inlet and is located in the middle of the tank. The plurality of branch pipes are connected to the lower end of the main pipe, and the lower end of each branch pipe is connected to the interior of a section of the ring pipe.
[0012] In some embodiments, the steam heating system further includes a fixed bracket installed at the bottom of the tank, and a ring pipe detachably installed on the upper part of the fixed bracket.
[0013] In some embodiments, the inner diameter of the annulus formed by the ring pipe is 1 / 3 to 2 / 3 of the inner diameter of the tank.
[0014] In some embodiments, the steam heating system further includes a hot water discharge pump, which is located on the outside of the tank and connected to the tank, for extracting hot water from the tank.
[0015] In some embodiments, an inspection port is provided on the lower side of the tank body, and a baffle is provided at the inspection port.
[0016] The beneficial effects of this utility model are as follows: By evenly distributing multiple first and second nozzles in a ring pipe, the high-pressure steam ejected from the first and second nozzles can be sprayed out from different angles in the form of small bubbles, increasing the contact area between the steam and the washing water. This allows for more uniform and thorough contact between the steam and the washing water in the tank, thereby improving heat exchange efficiency and achieving rapid heating, for example, reducing the heating time from one hour to half an hour. Furthermore, during the heating process, vibration and noise are significantly reduced (noise level drops from 120 decibels to 30 decibels), significantly reducing equipment damage and personal injury caused by tank vibration failures. From a technical perspective, this ensures the stable operation of steam heating in large water tanks for enterprises. The steam heating tank method adopted in this application provides a feasible heating system for enterprises to save energy, reduce consumption, and achieve efficient, stable, and safe operation, and has feasible promotional value within the industry. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of an in-tank steam heating system according to one embodiment of the present invention;
[0019] Figure 2 A schematic diagram of the structure of a ring pipe in an in-tank steam heating system provided in one embodiment of this utility model;
[0020] Figure 3 A schematic diagram showing the disassembled ring pipe of an in-tank steam heating system according to one embodiment of the present invention;
[0021] Figure 4 A structural fit diagram of a pipe section and connecting sleeve of an in-tank steam heating system provided in one embodiment of this utility model;
[0022] Figure 5 A cross-sectional schematic diagram of a connecting sleeve for an in-tank steam heating system provided in one embodiment of the present utility model;
[0023] Figure 6 A distribution diagram of the first and second nozzles on a pipe section of an in-tank steam heating system provided in one embodiment of the present invention;
[0024] Figure 7 This is a cross-sectional schematic diagram of the first nozzle or the second nozzle of an in-tank steam heating system provided in one embodiment of the present invention.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Cover plate; 2. Steam inlet pipe; 201. Main pipe; 202. Diverter pipe; 3. Tank body; 4. Ring pipe; 401. Connecting sleeve; 402. Pipe section; 5. Inspection port; 6. Baffle plate; 7. Exhaust pipe; 8. First nozzle; 9. Second nozzle; 10. Fixed bracket; 11. Hot water discharge pump; 12. Convection line. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.
[0028] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.
[0029] One embodiment of this utility model provides an in-tank steam heating system, such as... Figure 1 As shown, the system includes: a tank body 3, a ring pipe 4, and a steam inlet pipe 2. Specifically, the tank body 3 is cylindrical, with a diameter of 4 meters and a height of 6 meters. A cover plate 1 is installed on the top of the tank body 3, with an air inlet and an exhaust outlet. The air inlet is used to introduce high-temperature steam into the tank body 3, and the exhaust outlet is connected to an exhaust pipe 7 to allow waste bubbles generated after heating to be naturally discharged. The ring pipe 4 is made of high-temperature resistant material and is ring-shaped. The ring pipe 4 is horizontally installed inside the tank body 3 and coaxial with it. One end of the steam inlet pipe 2 is connected to an external steam delivery pipeline, and the other end of the steam inlet pipe 2 extends into the tank body 3 from the air inlet and connects to the inside of the ring pipe 4 to inject high-temperature steam into the ring pipe 4. Multiple first nozzles 8 and multiple second nozzles 9 are evenly arranged circumferentially on the ring pipe 4. The spray direction of the first nozzles 8 forms a first angle with respect to the horizontal plane, and the spray direction of the second nozzles 9 forms a second angle with respect to the horizontal plane. The first angle is different from the second angle, so that the steam ejected from the first nozzles 8 and the second nozzles 9 is sprayed at high pressure from different angles in the form of small bubbles. The small steam bubbles ejected from different angles form a complex fluid flow path within the tank 3, generating a strong convection phenomenon, which enables the washing water molecules to mix thoroughly, accelerates the transfer of heat in the washing water, and further improves the heating effect.
[0030] Compared with existing technologies, this application, by evenly distributing multiple first nozzles 8 and second nozzles 9 in the ring pipe 4, allows the high-pressure steam ejected from the first nozzles 8 and second nozzles 9 to be ejected from different angles in the form of small bubbles. This increases the contact area between the steam and the washing water, enabling more uniform and thorough contact with the washing water inside the tank 3, thereby improving heat exchange efficiency and achieving rapid heating. For example, compared with the traditional water tank direct-insertion steam pipeline heating method and facilities, which have many drawbacks, the heating time is reduced from one hour to half an hour. Furthermore, during the heating process, vibration and noise are significantly reduced (noise level drops from 120 decibels to 30 decibels), and equipment damage and personal injury caused by tank 3 vibration failures are also significantly reduced. From a technical perspective, this ensures the stable operation of large water tank steam heating for enterprises. The steam heating tank method adopted in this application provides a feasible heating system for enterprises to save energy, reduce consumption, and achieve efficient, stable, and safe operation, and has feasible promotional value in the industry.
[0031] In some embodiments, such as Figure 2 As shown, the first nozzle 8 is installed inside the annular pipe 4, and the second nozzle 9 is installed between the top of the annular pipe 4 and the installation position of the first nozzle 8. The first angle is 0°~5°, for example, approximately 0°, and the second angle is 30°~60°, for example, approximately 45°. The spray direction of the first nozzle 8 is along the horizontal plane or inclined upward relative to the horizontal plane, and the spray direction of the second nozzle 9 is inclined upward relative to the horizontal plane. The spray directions of the first nozzle 8 and the second nozzle 9 are directed towards the axis of the tank body 3, i.e., spraying inward. Figure 6 As shown, the first nozzle 8 is horizontally positioned and faces the axis of the tank 3; the second nozzle 9 forms a 45° angle with respect to the horizontal plane. When heating the washing water in the tank 3, the high-temperature, high-pressure steam, after being split by the first nozzle 8 and the second nozzle 9, generates bubbles that can form a convection path 12, continuously and rapidly heating the washing water in the tank 3. Furthermore, the vibration impact and noise of the uniformly distributed convective circulating bubbles are significantly reduced while heating the washing water. Preferably, as... Figure 7 As shown, the first nozzle 8 and the second nozzle 9 have the same structure and are both high-pressure nozzles.
[0032] In some embodiments, such as Figure 2 As shown, the first nozzle 8 and the second nozzle 9 are alternately arranged along the circumference of the annular pipe 4, and the circumferential distance from any first nozzle 8 to any two adjacent second nozzles 9 is the same. In this embodiment, there are 12 first nozzles 8 and 12 second nozzles 9. The design of 12 nozzles not only ensures uniform distribution but also optimizes the fluid dynamics characteristics. The number and arrangement of the nozzles can maximize the diffusion area of steam, reduce dead zones, and enable the washing water in the tank 3 to reach the required temperature more quickly and evenly.
[0033] In some embodiments, such as Figure 1 As shown, an inspection port 5 is provided on the lower side of the tank body 3, and a shield 6 is provided at the inspection port 5. Specifically, depending on the size of the tank body 3, an inspection port 5 is provided on the side of the tank body 3, allowing only one person to pass through, so as to facilitate maintenance personnel to enter the tank body 3 for maintenance. Preferably, the diameter of the inspection port 5 is 0.5 meters.
[0034] In some embodiments, such as Figure 3 As shown, the ring pipe 4 is an assembled ring pipe, comprising multiple pipe sections 402, such as two, three, or four sections. Each pipe section 402 is detachable, and the multiple pipe sections 402 are connected by connecting sleeves 401. Due to the narrow access port 5 and the relatively large diameter of the ring pipe 4, the ring pipe 4 is designed to be disassembled into multiple sections to enter the tank 3 through the access port 5. Each pipe section 402 is connected together by the connecting sleeves 401 for easy installation and replacement (e.g., ...). Figure 4 (As shown). Figure 5 The cross-sectional structure of the connecting sleeve 401 is shown. The connecting sleeve 401 can be a threaded connection sleeve, a flange connection sleeve, a clamp connection sleeve, a compression sleeve, etc., so that the multi-section pipe segment 402 of the ring pipe 4 can be quickly sealed and connected, and the installation is convenient.
[0035] In some embodiments, such as Figure 1 As shown, the steam inlet pipe 2 includes a main pipe 201 and multiple branch pipes 202. The main pipe 201 passes through the air inlet and is located in the middle of the tank body 3. The upper end of the main pipe 201 is connected to the steam delivery pipe of the external steam generator. The multiple branch pipes 202 are connected to the lower end of the main pipe 201, and the lower end of each branch pipe 202 is connected to the inside of a pipe section 402 of the ring pipe 4, so as to facilitate the uniform introduction of steam into each pipe section 402.
[0036] In some embodiments, such as Figure 1 As shown, the steam heating system inside the tank also includes a fixed bracket 10, which is installed at the bottom of the tank body 3. The annular pipe 4 is detachably installed on the upper part of the fixed bracket 10. Depending on the needs, the fixed bracket 10 can be configured as a bracket-type fixed bracket, which consists of multiple brackets and support columns. The brackets support the annular pipe 4, and the support columns fix the brackets to the bottom of the tank body 3. The brackets are fixed to the support columns by welding or bolts, and the support columns are fixed to the bottom of the tank body 3 by anchor bolts.
[0037] In some embodiments, such as Figure 1As shown, the inner diameter of the ring formed by the annular pipe 4 is 1 / 3 to 2 / 3 of the inner diameter of the tank body 3. This size ratio of the annular pipe 4 helps to form a complex fluid flow path within the tank body 3. When the fluid is ejected from the annular pipe 4, it generates swirling and convection within the tank body 3, allowing the washing water to mix more thoroughly with the detergent or steam, thus improving the washing effect. Furthermore, this ratio allows the high-temperature, high-pressure steam within the annular pipe 4 to be split through the first nozzle 8 and the second nozzle 9, forming a convection path 12 within the tank body 3, rapidly heating the washing water. When the inner diameter ratio of the annular pipe 4 is appropriate, it ensures a more uniform distribution of steam within the tank body 3, thereby improving heat transfer efficiency and allowing the washing water to reach the required temperature more quickly.
[0038] In some embodiments, such as Figure 1 As shown, the steam heating system also includes a hot water discharge pump 11, which is located on the outside of the tank 3 and connected to the tank 3. It is used to extract the hot water from the tank 3 and pump it into each leaching tank for high-temperature washing.
[0039] In some embodiments, a temperature sensor (not shown in the figure) is installed inside the tank 3 to detect the temperature of the washing water inside the tank 3, thereby determining whether the washing water meets the discharge standard. For example, when the temperature sensor detects that the temperature reaches 90°C, the hot water discharge pump 11 can be started to discharge the heated washing water.
[0040] One embodiment of this utility model proposes a heating method for an in-tank steam heating system as follows:
[0041] Steam is introduced into the tank 3 through the main pipe 201 of the steam inlet pipe 2. A large amount of steam flows downward through multiple branch pipes 202 of the steam inlet pipe 2 and is divided into the ring pipe 4. The steam flow entering the ring pipe 4 is constrained by the pipe wall of the circular closed ring pipe 4 and then sprayed through 12 first nozzles 8 set at 0° horizontally and 12 second nozzles 9 set at 45° inclined. A large amount of high temperature and high pressure steam escapes from different positions to the middle of the ring pipe 4 and the upper part of the ring pipe 4 in the form of small bubbles. After being divided by the first nozzles 8 and the second nozzles 9, the bubbles continuously circulate along the convection line 12 to rapidly heat the washing water in the tank 3. The steam waste bubbles generated after heating are naturally discharged from the exhaust pipe 7. The qualified high temperature washing water is then pumped into each leaching tank for high temperature washing operation through the hot water discharge pump 11 below the tank 3.
[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0043] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A steam heating system, characterized by, The utility model relates to a kind of steam injection device, including: Tank body (3), the upper portion of the tank body (3) is provided with cover plate (1), the cover plate (1) is provided with air inlet and exhaust port; Annular pipe (4), the annular pipe (4) is horizontally arranged inside the tank body (3), and is coaxially arranged with the tank body (3), the annular pipe (4) is uniformly provided with a plurality of first nozzle (8) and a plurality of second nozzle (9) along the circumference direction;The injection direction of the first nozzle (8) is relative to horizontal plane first angle, the injection direction of the second nozzle (9) is relative to horizontal plane second angle, the first angle is different from the second angle; Steam inlet pipe (2), one end of the steam inlet pipe (2) is communicated with steam conveying pipe outside, the other end of the steam inlet pipe (2) is inserted into the tank body (3) from the air inlet, and is communicated with the inside of the annular pipe (4).
2. The steam heating system of claim 1, wherein, The first angle is 0~5°, the second angle is 30~60°, the injection direction of the first nozzle (8) is along horizontal plane or relative to horizontal plane obliquely upward, the injection direction of the second nozzle (9) is relative to horizontal plane obliquely upward, the injection direction of the first nozzle (8) and the second nozzle (9) is towards the axis of the tank body (3).
3. The steam heating system of claim 1, wherein, The installation position of the first nozzle (8) is inside the annular pipe (4), the installation position of the second nozzle (9) is between the top of the annular pipe (4) and the installation position of the first nozzle (8).
4. The steam heating system of claim 1, wherein, The first nozzle (8) and the second nozzle (9) are alternately arranged along the circumference direction of the annular pipe (4), and the circumferential distance from any first nozzle (8) to the adjacent two second nozzles (9) is the same.
5. The steam heating system of claim 4, wherein, The annular pipe (4) includes multiple pipe sections (402), each pipe section (402) is detachable, and the multiple pipe sections (402) are butted by a connecting sleeve (401).
6. The steam heating system of claim 5, wherein, The steam inlet pipe (2) includes a main pipe (201) and multiple branch pipes (202), the main pipe (201) penetrates the air inlet and is located in the middle of the tank body (3), and the multiple branch pipes (202) are connected to the lower end of the main pipe (201), and the lower end of each branch pipe (202) is communicated with the inside of one pipe section (402) of the annular pipe (4).
7. The steam heating system of claim 1, wherein, Further comprising a fixed support (10), the fixed support (10) is installed on the bottom of the tank body (3), and the annular pipe (4) is detachably installed on the upper portion of the fixed support (10).
8. The steam heating system of claim 1, wherein, The inner diameter of the annular space surrounded by the annular pipe (4) is 1 / 3~2 / 3 of the inner diameter of the tank body (3).
9. The steam heating system of claim 1, wherein, Further comprising a hot water discharge pump (11), the hot water discharge pump (11) is arranged outside the tank body (3) and connected with the tank body (3), for pumping out hot water in the tank body (3).
10. The steam heating system of claim 1, wherein, A maintenance opening (5) is arranged below the side portion of the tank body (3), and a shielding plate (6) is arranged at the maintenance opening (5).