A heat exchange station two-network circulating water purification device for a thermal system
By utilizing the direct current and electro-adsorption principle between the anode and cathode plates in the circulating water system of the thermal system heat exchange station, combined with a cylindrical design, the scaling problem of the circulating water system is solved, achieving efficient descaling, sterilization and corrosion prevention, while reducing energy consumption and labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NUANLIN ENVIRONMENTAL TECHNOLOGY (SHANDONG) CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional heat exchange stations in thermal systems suffer from scaling problems in their circulating water systems, leading to increased energy consumption, increased flow resistance, and severe pipe corrosion. Furthermore, existing descaling methods suffer from problems such as equipment corrosion, pollution, and operational instability.
An electrochemical method is used to utilize direct current between the anode and cathode plates to form scale in the cathode region through electro-adsorption. The salt balance in the water is regulated by controlling the Langerile index and stability index. Combined with the cylindrical main body design to improve pressure resistance, it achieves chemical-free descaling, sterilization and corrosion prevention.
It effectively controls scaling and corrosion, increases the concentration ratio of circulating water, saves water, reduces labor costs, and is simple and environmentally friendly to operate. It also has a small footprint and low power consumption.
Smart Images
Figure CN224590802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of thermal pipeline maintenance, and in particular to a secondary circulating water purification device for a thermal system heat exchange station. Background Technology
[0002] Heat exchange stations in the heating industry are indirect-cooling closed-loop circulating water systems with no evaporation. They only require periodic replenishment of lost water. The quality of this replenishment water is complex, potentially including groundwater, surface water, and tap water. Although traditional treatment processes are used, the high workload of operation and maintenance, and unstable treatment effects of traditional equipment lead to severe scaling on heat exchangers and secondary heating radiators in some stations. Scale has the following hazards: 1. Poor thermal conductivity, causing a sharp increase in energy consumption and production costs; 2. Increased flow resistance, which can even block pipes, reducing the operating efficiency of the pipeline network; 3. Accelerated corrosion of pipes and equipment, increasing equipment wear and safety hazards. On average, heat exchangers need to be cleaned 1 to 3 times per heating season, resulting in a large workload and high costs.
[0003] Current technologies often employ resin softening and electronic descaling devices for descaling. Numerical softening requires periodic resin regeneration or replacement, and the regeneration of molten salt is labor-intensive; it also produces high-salinity reclaimed water that is difficult to treat; and the waste resin is hazardous waste and difficult to manage. Electronic descaling devices are highly unstable, typically showing some effect within 3 to 6 months, and they can exacerbate corrosion of equipment and pipelines, generate electromagnetic radiation that impacts the environment, and even interfere with the normal operation of equipment. Utility Model Content
[0004] In order to reduce costs, improve the efficiency of scale removal in heating pipelines, and reduce the difficulty of operation, this application provides a secondary circulating water purification device for a heat exchange station in a heating system.
[0005] This application provides a secondary circulating water purification device for a heat exchange station in a thermal system, which adopts the following technical solution: A secondary circulating water purification device for a heat exchange station in a thermal system includes a main body, which is cylindrical and has a wall thickness of 8mm. An inlet pipe, an outlet pipe, and a slag discharge pipe are installed on the main body. An end cover is also installed on the main body via a fixing mechanism. An anode is installed on the end cover via an installation mechanism. An automatic air vent valve for pressure relief is also installed on the end cover.
[0006] By adopting the above technical solution, this equipment utilizes the electrochemical characteristics of anions and cations in water to solve the scaling problem in circulating water systems. It primarily involves applying direct current between the anode and cathode plates, causing a large amount of scale to form in the strongly alkaline environment of the cathode region through electroadsorption. The Langerile Index (LSI) and stability index of the water are controlled to regulate the salt balance, thereby controlling scaling and corrosion. Compared to traditional industrial water purification equipment, due to the higher water pressure in the thermal pipelines, the main body of this equipment is cylindrical, resulting in more uniform pressure distribution and thicker walls for greater pressure resistance. Compared to traditional circulating water purification equipment in secondary heat exchange stations of thermal systems, this equipment can increase the concentration ratio of circulating water, achieving water conservation. It removes scale, sterilizes, kills algae, and prevents corrosion without adding any chemicals, resulting in no pollution. It operates automatically without manual supervision, greatly reducing labor costs. The equipment has a small footprint, is simple to operate, easy to use, and consumes little power.
[0007] Optionally, the fixing mechanism includes a first fixing flange and a second fixing flange. The first fixing flange is fixedly connected to the end cover, and the second fixing flange is fixedly connected to the main body. The fixing mechanism also includes a plurality of fixing bolts, which pass through the first fixing flange and the second fixing flange in sequence and are threaded with a first fixing nut.
[0008] By adopting the above technical solution, the first fixed flange, the second fixed flange, the fixed bolt, and the first fixed nut enable the installation and detachable connection of the end cover, thereby facilitating the opening of the end cover to clean the scale inside the main body.
[0009] Optionally, the fixing mechanism further includes a sealing rubber gasket located between the first fixing flange and the second fixing flange.
[0010] By adopting the above technical solution, the high pressure in the heat pipe makes it easy for water to leak between the first fixed flange and the second fixed flange. The gasket seals the gap between the first fixed flange and the second fixed flange, thereby reducing the probability of water leakage between the first fixed flange and the second fixed flange.
[0011] Optionally, the top wall of the end cap is provided with multiple mounting holes, and the mounting mechanism includes multiple first PTFE fittings, which are respectively inserted into the multiple mounting holes. A second PTFE fitting is inserted into the first PTFE fitting. A mounting rod is fixedly connected to the anode, and the mounting rod is inserted into the second PTFE fitting. A baffle is fixedly connected to the mounting rod, which is located inside the main body. A thread is provided on the side wall of the mounting rod, and a second fixing nut is threadedly connected to the end of the mounting rod outside the main body.
[0012] By adopting the above technical solution, the installation mechanism enables the installation of the anode, and the arrangement of the first and second PTFE fittings achieves a seal inside the main body, reducing the probability of pressure leakage at the installation hole location.
[0013] Optionally, a lifting nose is also installed on the outer side wall of the end cap, and a lifting hole is provided on the side wall of the lifting nose.
[0014] By adopting the above technical solution, when cleaning the scale inside the main body, the end cover needs to be opened. However, due to the large weight of the end cover, it is time-consuming, laborious and unsafe to open it manually. Therefore, a lifting device is needed to lift the end cover. The setting of the lifting nose and lifting hole increases the attachment points for the end cover, thus realizing the lifting of the end cover.
[0015] Optionally, a sleeve is also fixedly connected to the bottom wall inside the main body.
[0016] By adopting the above technical solution, since the electro-adsorption principle will form a large amount of scale in the strongly alkaline environment of the cathode area, the area of the cathode area determines the amount of scale adsorbed. The sleeve is set inside the main body to increase the cathode area and the adhesion area of the scale, resulting in better purification effect.
[0017] Optionally, a slag discharge groove is provided on the side wall of the sleeve, and the slag discharge groove is located at one end of the sleeve near the bottom wall of the main body.
[0018] By adopting the above technical solution, when cleaning the scale inside the sleeve, the scale that falls into the sleeve needs to be manually dug out. However, due to the depth of the sleeve, the cleaning is very inconvenient. The setting of the slag discharge trough allows the scale that falls into the sleeve to be discharged from the slag discharge trough and then discharged from the main body through the slag discharge pipe, making the cleaning of the scale inside the sleeve more convenient.
[0019] In summary, this application includes the following beneficial technical effects: 1. This equipment utilizes the electrochemical properties of anions and cations in water to solve the scaling problem in circulating water systems. It primarily involves applying direct current between the anode and cathode plates, causing a large amount of scale to form in the strongly alkaline environment of the cathode region through electroadsorption. By controlling the Langerile Index (LSI) and stability index of the water, the salt balance in the water is adjusted, thereby controlling scaling and corrosion. Compared to traditional industrial water purification equipment, due to the higher water pressure in the thermal pipelines, the main body of this equipment is cylindrical, resulting in more uniform pressure distribution and thicker walls for greater pressure resistance. Compared to traditional circulating water purification equipment in secondary heat exchange stations of thermal systems, this equipment can increase the concentration ratio of circulating water, achieving water conservation. It removes scale, sterilizes, kills algae, and prevents corrosion without adding any chemicals, resulting in no pollution. It operates automatically, requiring no manual supervision, greatly reducing labor costs. The equipment has a small footprint, is simple to operate, easy to use, and consumes little power. 2. Since the electro-adsorption principle will form a large amount of scale in the strongly alkaline environment of the cathode area, the area of the cathode area determines the amount of scale adsorbed. The sleeve is set inside the main body to increase the cathode area and the adhesion area of the scale, resulting in better purification effect. 3. The installation mechanism enables the installation of the anode, and the first and second PTFE fittings ensure a tight seal inside the main body, reducing the probability of pressure leakage at the mounting hole location. Attached Figure Description
[0020] Figure 1 This is a front view of the secondary circulating water purification equipment of the heat exchange station in the thermal system, as described in this application embodiment. Figure 2 This is a side view of the secondary circulating water purification equipment of the heat exchange station in the thermal system, as described in this application embodiment. Figure 3 For this application Figure 2 Enlarged view of section A; Figure 4 For this application Figure 2 Enlarged view of section B; Figure 5 This is a schematic diagram of the sleeve structure in an embodiment of this application.
[0021] Reference numerals: 1. Main body; 11. Inlet pipe; 12. Outlet pipe; 13. Slag discharge pipe; 14. Automatic air vent valve; 2. End cap; 3. Fixing mechanism; 31. First fixing flange; 32. Second fixing flange; 33. Fixing bolt; 34. First fixing nut; 35. Sealing rubber gasket; 4. Anode; 5. Installation mechanism; 51. Installation rod; 52. Baffle; 53. First PTFE fitting; 54. Second PTFE fitting; 55. Second fixing nut; 6. Lifting nose; 61. Lifting hole; 7. Sleeve; 71. Slag discharge trough. Detailed Implementation
[0022] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0023] This application discloses a secondary circulating water purification device for a heat exchange station in a thermal system.
[0024] refer to Figure 1 and Figure 2 The heat exchange station secondary network circulating water purification equipment of the thermal system includes a main body 1. An inlet pipe 11 and a slag discharge pipe 13 are fixedly connected to the bottom wall of the main body 1. An outlet pipe 12 is also fixedly connected to the side wall of the main body 1. An end cover 2 is installed on the top of the main body 1 through a fixing mechanism 3. An automatic air vent valve 14 is fixedly connected to the end of the end cover 2 away from the main body 1. An anode 4 is also installed on the end cover 2 through an installation mechanism 5.
[0025] This equipment utilizes the electrochemical properties of anions and cations in water to solve the scaling problem in circulating water systems. It primarily involves applying direct current between the anode and cathode plates, causing a large amount of scale to form in the strongly alkaline environment of the cathode region through electroadsorption. By controlling the Langerile Index (LSI) and stability index of the water, the salt balance in the water is adjusted, thereby controlling scaling and corrosion. Compared to traditional industrial water purification equipment, due to the higher water pressure in the thermal pipelines, the main body of this equipment is cylindrical, resulting in more uniform pressure distribution and thicker walls for greater pressure resistance. Compared to traditional circulating water purification equipment in secondary heat exchange stations of thermal systems, this equipment can increase the concentration ratio of circulating water, achieving water conservation. It removes scale, sterilizes, kills algae, and prevents corrosion without adding any chemicals, resulting in no pollution. It operates automatically, requiring no manual supervision, greatly reducing labor costs. The equipment has a small footprint, is simple to operate, easy to use, and consumes little power.
[0026] Two lifting noses 6 are fixedly connected to the side wall of the end cap 2 away from the main body 1. The side wall of the lifting noses 6 is provided with lifting holes 61. When cleaning the scale inside the main body 1, the end cap 2 needs to be opened. However, since the end cap 2 is heavy, it is time-consuming, laborious and unsafe to open it manually. Therefore, a lifting device is needed to lift the end cap 2. The setting of the lifting noses 6 and the lifting holes 61 increases the lifting attachment points of the end cap 2, realizing the lifting of the end cap 2.
[0027] refer to Figure 3The fixing mechanism 3 includes a first fixing flange 31 and a second fixing flange 32. The first fixing flange 31 is fixedly connected to the end cover 2 and is located at the end of the end cover 2 near the main body 1. The second fixing flange 32 is fixedly connected to the main body 1 and is located at the end of the main body 1 near the end cover 2. A sealing rubber gasket 35 is sandwiched between the first fixing flange 31 and the second fixing flange 32. The fixing mechanism 3 also includes a plurality of fixing bolts 33. The plurality of fixing bolts 33 pass through the first fixing flange 31 and the second fixing flange 32 in sequence and are threadedly connected to the first fixing nut 34.
[0028] The first fixed flange 31, the second fixed flange 32, the fixing bolt 33, and the first fixing nut 34 enable the installation and detachable connection of the end cover 2, thereby facilitating the opening of the end cover 2 to clean the scale inside the main body 1. At the same time, due to the strong pressure in the heat pipe, water leakage is likely to occur between the first fixed flange 31 and the second fixed flange 32. The sealing gasket seals the gap between the first fixed flange 31 and the second fixed flange 32, thereby reducing the probability of water leakage between the first fixed flange 31 and the second fixed flange 32.
[0029] refer to Figure 4 Multiple mounting holes are provided on the top wall of the end cap 2. The mounting mechanism 5 includes multiple first PTFE fittings 53, which are respectively inserted into the multiple mounting holes. Second PTFE fittings 54 are inserted into the first PTFE fittings 53. A mounting rod 51 is fixedly connected to the anode 4. The mounting rod 51 is inserted into the second PTFE fitting 54. A baffle 52 is fixedly connected to the mounting rod 51. The baffle 52 is located inside the main body 1. The mounting rod 51 has threads on the side wall outside the main body 1. A second fixing nut 55 is connected to the end of the mounting rod 51 outside the main body 1 through the threads.
[0030] The installation mechanism 5 enables the installation of the anode 4, and the first PTFE fitting 53 and the second PTFE fitting 54 achieve a seal inside the main body 1, reducing the probability of pressure leakage at the installation hole location.
[0031] refer to Figure 5A sleeve 7 is fixedly connected to the bottom wall inside the main body 1. A slag discharge groove 71 is opened on the side wall of the sleeve 7, and the slag discharge groove 71 is located at the end of the sleeve 7 near the bottom wall of the main body 1. Since the electro-adsorption principle will form a large amount of scale in the strongly alkaline environment of the cathode area, the area of the cathode area determines the amount of scale adsorbed. The sleeve 7 is set inside the main body 1 to increase the cathode area and the adhesion area of the scale, so as to improve the purification effect. When cleaning the scale inside the sleeve 7, the scale that falls into the sleeve 7 needs to be dug out manually. However, due to the depth of the sleeve 7, the cleaning is very inconvenient. The slag discharge groove 71 allows the scale that falls into the sleeve 7 to be discharged from the slag discharge groove 71 and then discharged from the main body 1 through the slag discharge pipe 13, making the cleaning of the scale inside the sleeve more convenient.
[0032] The implementation principle of the circulating water purification equipment for a heat exchange station in a thermal system according to this application embodiment is as follows: The equipment is installed on the thermal pipeline, and then the anode and cathode are energized. The electrochemical characteristics of anions and cations in the water are used to solve the scaling problem in the circulating water system. The main method is to pass direct current between the anode and cathode plates. Through the principle of electro-adsorption, a large amount of scale is formed in the strongly alkaline environment of the cathode area. By controlling the Langerile index (LSI) and stability index of the water, the salt balance in the water is adjusted to achieve the purpose of controlling scaling and corrosion.
[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A secondary circulating water purification device for a heat exchange station in a thermal system, characterized in that, Includes a main body (1), which is cylindrical and has a wall thickness of 8mm. The main body (1) is equipped with an inlet pipe (11), an outlet pipe (12), and a slag discharge pipe (13). An end cap (2) is also installed on the main body (1) via a fixing mechanism (3). An anode (4) is installed on the end cap (2) via an installation mechanism (5). An automatic air vent valve (14) for depressurization is also installed on the end cap (2).
2. The secondary circulating water purification equipment for a heat exchange station in a thermal system according to claim 1, characterized in that, The fixing mechanism (3) includes a first fixing flange (31) and a second fixing flange (32). The first fixing flange (31) is fixedly connected to the end cover (2), and the second fixing flange (32) is fixedly connected to the main body (1). The fixing mechanism (3) also includes a plurality of fixing bolts (33). The plurality of fixing bolts (33) pass through the first fixing flange (31) and the second fixing flange (32) in sequence and are threaded with a first fixing nut (34).
3. The secondary circulating water purification equipment for a heat exchange station in a thermal system according to claim 2, characterized in that, The fixing mechanism (3) also includes a sealing rubber gasket (35), which is located between the first fixing flange (31) and the second fixing flange (32).
4. The secondary circulating water purification equipment for a heat exchange station in a thermal system according to claim 1, characterized in that, The top wall of the end cap (2) is provided with multiple mounting holes. The mounting mechanism (5) includes multiple first PTFE fittings (53). The multiple first PTFE fittings (53) are respectively inserted into the multiple mounting holes. A second PTFE fitting (54) is inserted into the first PTFE fitting (53). An mounting rod (51) is fixedly connected to the anode (4). The mounting rod (51) is inserted into the second PTFE fitting (54). A baffle (52) is fixedly connected to the mounting rod (51). The baffle (52) is located inside the main body (1). The side wall of the mounting rod (51) is provided with threads. The end of the mounting rod (51) located outside the main body (1) is connected to a second fixing nut (55) by threads.
5. The secondary circulating water purification equipment for a heat exchange station in a thermal system according to claim 1, characterized in that, A lifting nose (6) is also installed on the outer side wall of the end cap (2), and a lifting hole (61) is provided on the side wall of the lifting nose (6).
6. The secondary circulating water purification equipment for a heat exchange station in a thermal system according to claim 1, characterized in that, A sleeve (7) is also fixedly connected to the bottom wall inside the main body (1).