Heat medium circulation control structure of organic heat carrier boiler

Abstract

The utility model provides a kind of heat medium circulation control structure of organic heat carrier boiler, it is related to organic heat carrier boiler equipment technical field, including base, the upper surface of base is fixedly installed with controller.The utility model is set up U type preheating pipe and temperature sensor one in cold oil tank, and preheating pipe can be automatically started and stopped according to the heat medium temperature in cold oil tank, realize the preheating of heat medium, avoid cold state heat medium directly into hot oil tank and cause temperature difference too large, while hot oil tank is arranged two groups of frequency conversion heating pipe symmetrically, and it is matched by motor-driven stirring rod one and stirring rod two, so that heat medium is fully mixed in heating process, heated more evenly, effectively prevent local over-temperature to cause heat medium metamorphism, and three groups of filter plate with mesh number increasing along the flow direction of heat medium are set in filter box, can carry out step-by-step filtration to reflux heat medium, substantially improve heat medium cleanliness, avoid impurities to block heating pipe or wear pump body.

Description

Technical Field

[0001] This utility model relates to the technical field of organic heat carrier boiler equipment, and in particular to a heat medium circulation regulation structure for an organic heat carrier boiler. Background Technology

[0002] Organic heat carrier boiler equipment is an industrial heat energy supply device that uses organic heat transfer media such as heat transfer oil and biphenyl mixture as heat transfer medium. It heats the heat transfer medium and uses a circulation system to transfer heat to the heat-using equipment. With the advantages of high temperature and low pressure, wide temperature control range (100℃-350℃) and high heat transfer efficiency, it is widely used in chemical reaction, food processing, textile printing and dyeing, district heating and other fields. Its core performance depends on the stable operation and precise control of the heat transfer medium circulation system.

[0003] In existing technologies, the heat medium circulation system of organic heat carrier boilers typically uses a single oil storage tank and direct heating. During cold start-up, the entire system's oil volume needs to be heated, resulting in slow temperature rise and high energy consumption. Although some systems have filtration devices, they are mostly fixed welded or bolted structures. Replacing the filter element requires disassembling pipes and shutting down the system to drain the oil, which is complex and prone to secondary pollution. In addition, the heat transfer oil is prone to local overheating due to uneven heating during high-temperature heating, leading to oil cracking and carbon buildup, affecting heat transfer efficiency and system lifespan. At the same time, the return oil filtration device lacks real-time status monitoring functions, making it impossible to detect blockages in time. After long-term operation, it is prone to problems such as poor circulation and pump wear. Although some systems have temperature control, they lack integrated and intelligent control methods for cold oil preheating, hot oil mixing, and filtration maintenance, resulting in slow system response, high maintenance costs, and poor operational stability. Therefore, a heat medium circulation control structure that integrates preheating, uniform heating, efficient filtration, and convenient maintenance is needed to improve the start-up efficiency, operational safety, and ease of maintenance of organic heat carrier boiler systems. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing heat medium circulation control structures lack integration of preheating, uniform heating, efficient filtration, and convenient maintenance, and to propose a heat medium circulation control structure for organic heat carrier boilers.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a heat medium circulation control structure for an organic heat carrier boiler, comprising a base, a controller fixedly mounted on the upper surface of the base, a cold oil tank, a hot oil tank, and a filter box fixedly mounted on the upper surface of the base respectively, a preheating tube fixedly mounted inside the cold oil tank, a temperature sensor fixedly mounted on the inner wall of the cold oil tank, a liquid level sensor fixedly mounted on the inner wall of the cold oil tank, a water inlet pipe fixedly connected to the side of the cold oil tank, a delivery pump fixedly mounted on the surface of the base, a frequency conversion heating tube fixedly mounted inside the hot oil tank, and a filter box fixedly mounted on the inner wall of the hot oil tank. The system includes a second temperature sensor, a conveying pipe fixedly connected to the side of the hot oil tank, a stirring rod 1 and a stirring rod 2 rotatably connected inside the hot oil tank, a gear 1 fixedly connected to the surface of the stirring rod 1, a gear 2 fixedly connected to one end of the stirring rod 2, a motor fixedly mounted on the surface of the hot oil tank, a filter plate inside the filter box, a differential pressure sensor fixedly mounted on the inner wall of the filter box, a return pipe fixedly connected to the side of the filter box, a circulation pump fixedly mounted on the surface of the base, a circulation pipe fixedly connected to the output end of the circulation pump, an insert block fixedly connected to the side of the filter plate, and a slot opened on the surface of the filter box.

[0006] Preferably, the suction end of the delivery pump is connected to the interior of the cold oil tank, and the output end of the delivery pump is connected to the interior of the hot oil tank.

[0007] Preferably, the output end of the motor is fixedly connected to one end of the stirring rod, and the gear one and gear two mesh with each other.

[0008] Preferably, the suction end of the circulating pump is connected to the interior of the hot oil tank, and one end of the circulating pipe is connected to the interior of the cold oil tank.

[0009] Preferably, the preheating tube is arranged in a U-shape, the number of variable frequency heating tubes is two sets, and the variable frequency heating tubes are symmetrically arranged along the inner wall of the hot oil tank.

[0010] Preferably, the number of filter plates is three sets, and the mesh size of the filter plates increases sequentially along the flow direction inside the filter box.

[0011] Preferably, the insert and the slot are slidably connected, and the cross-sectional shape of the insert and the cross-sectional shape of the slot are both convex.

[0012] Preferably, the side of the filter box is provided with a disassembly mechanism, the disassembly mechanism includes a fixing plate, a limit rod is slidably connected inside the fixing plate, a limit hole is opened on the side of the insertion block, a limit plate is fixedly connected to the surface of the limit rod, and a tension spring is sleeved on the surface of the limit rod.

[0013] Preferably, the limiting rod and the limiting hole are slidably connected.

[0014] Preferably, one end of the tension spring is fixedly connected to the side of the limiting plate, and the other end of the tension spring is fixedly connected to the side of the fixing plate.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by setting a U-shaped preheating tube and a temperature sensor in the cold oil tank, the controller can automatically start and stop the preheating tube according to the temperature of the heat medium in the cold oil tank, so as to achieve preheating of the heat medium and avoid the cold heat medium directly entering the hot oil tank and causing excessive temperature difference. At the same time, two sets of variable frequency heating tubes are symmetrically arranged in the hot oil tank, and with the stirring rods driven by the motor, the heat medium is fully mixed during the heating process, the heating is more uniform, and the local overheating is effectively prevented from causing the heat medium to deteriorate. In addition, three sets of filter plates with increasing mesh size along the flow direction of the heat medium are set in the filter box, which can filter the return heat medium step by step, greatly improving the cleanliness of the heat medium and avoiding impurities from clogging the heating tube or wearing the pump body.

[0017] 2. In this utility model, the filter plate is slidably connected to the convex slot of the filter box via a convex insert block. With the help of the disassembly mechanism on the side, pulling the limiting rod can compress the tension spring and cause the limiting rod to disengage from the limiting hole of the insert block, allowing the filter plate to be quickly pulled out for cleaning or replacement. During installation, after the insert block slides into the slot, the tension spring resets and pushes the limiting rod into the limiting hole to complete the locking. No tools are needed, significantly improving the convenience of maintenance. At the same time, the differential pressure sensor in the filter box can monitor the pressure difference before and after filtration in real time, which makes it easy for the controller to remind you to replace the filter plate in a timely manner, ensuring stable filtration effect and ensuring long-term efficient operation of the heat medium circulation system. Attached Figure Description

[0018] Figure 1 This utility model provides a three-dimensional structural diagram of a heat medium circulation regulation structure for an organic heat carrier boiler.

[0019] Figure 2 A top view of the heat medium circulation regulation structure of an organic heat carrier boiler is provided for this utility model;

[0020] Figure 3 This utility model provides an overall cross-sectional view of the heat medium circulation control structure of an organic heat carrier boiler.

[0021] Figure 4 A cross-sectional view of the filter box of the heat medium circulation regulation structure of an organic heat carrier boiler is provided for this utility model.

[0022] Figure 5 This utility model provides a partial structural diagram of the filter box and filter screen of a heat medium circulation regulation structure for an organic heat carrier boiler.

[0023] Figure 6 This invention proposes a heat medium circulation regulation structure for an organic heat carrier boiler. Figure 5 Enlarged view of point A in the middle.

[0024] Legend: 1. Base; 101. Controller; 2. Cold oil tank; 3. Hot oil tank; 4. Filter box; 5. Preheating tube; 6. Temperature sensor one; 7. Liquid level sensor; 8. Water inlet pipe; 9. Transfer pump; 10. Variable frequency heating tube; 11. Temperature sensor two; 12. Transfer pipe; 13. Stirring rod one; 14. Stirring rod two; 15. Gear one; 16. Gear two; 17. Motor; 18. Filter plate; 19. Differential pressure sensor; 20. Return pipe; 21. Circulation pump; 22. Circulation pipe; 23. Insert block; 24. Slot; 25. Disassembly mechanism; 251. Fixing plate; 252. Limiting rod; 253. Limiting hole; 254. Limiting plate; 255. Tension spring. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1: As Figures 1-6As shown, this utility model provides a technical solution: a heat medium circulation control structure for an organic heat carrier boiler, including a base 1, a controller 101 fixedly installed on the upper surface of the base 1, a cold oil tank 2, a hot oil tank 3, and a filter box 4 respectively fixedly installed on the upper surface of the base 1, a preheating pipe 5 fixedly installed inside the cold oil tank 2, a temperature sensor 6 fixedly installed on the inner wall of the cold oil tank 2, a liquid level sensor 7 fixedly installed on the inner wall of the cold oil tank 2, and a water inlet pipe 8 fixedly connected to the side of the cold oil tank 2. The surface of the base 1 is fixedly... A delivery pump 9 is installed; a variable frequency heating tube 10 is fixedly installed inside the hot oil tank 3; a temperature sensor 11 is fixedly installed on the inner wall of the hot oil tank 3; a delivery pipe 12 is fixedly connected to the side of the hot oil tank 3; a stirring rod 13 and a stirring rod 14 are rotatably connected inside the hot oil tank 3; a gear 15 is fixedly connected to the surface of the stirring rod 13; a gear 16 is fixedly connected to one end of the stirring rod 14; a motor 17 is fixedly installed on the surface of the hot oil tank 3; a filter plate 18 is provided inside the filter box 4; and the inner wall of the filter box 4 is fixedly... A differential pressure sensor 19 is fixedly installed. A return pipe 20 is fixedly connected to the side of the filter box 4. A circulation pump 21 is fixedly installed on the surface of the base 1. A circulation pipe 22 is fixedly connected to the output end of the circulation pump 21. An insert block 23 is fixedly connected to the side of the filter plate 18. A slot 24 is opened on the surface of the filter box 4. The suction end of the delivery pump 9 is connected to the inside of the cold oil tank 2. The output end of the delivery pump 9 is connected to the inside of the hot oil tank 3. The output end of the motor 17 is fixedly connected to one end of the stirring rod 13. Gear 15 and gear 2 are connected to each other. The components 6 mesh with each other. The suction end of the circulating pump 21 is connected to the inside of the hot oil tank 3. One end of the circulating pipe 22 is connected to the inside of the cold oil tank 2. The preheating pipe 5 is arranged in a U-shape. There are two sets of variable frequency heating pipes 10, and the variable frequency heating pipes 10 are symmetrically arranged along the inner wall of the hot oil tank 3. There are three sets of filter plates 18. The mesh size of the filter plates 18 increases sequentially along the flow direction in the filter box 4. The insert 23 and the slot 24 are slidably connected. The cross-sectional shape of the insert 23 and the cross-sectional shape of the slot 24 are both convex.

[0028] In this embodiment, when the heat transfer oil circulation control structure of the organic heat carrier boiler starts operating, the heat transfer oil in the cold oil tank 2 is first preheated through the preheating pipe 5. Temperature sensor 6 monitors the oil temperature in real time and feeds it back to the controller 101. When the preset temperature is reached, the delivery pump 9 starts, delivering the heated heat transfer oil through the delivery pipe 12 to the hot oil tank 3. In the hot oil tank 3, the variable frequency heating pipe 10 performs precise heating according to the instructions of the controller 101. At the same time, the motor 17 drives the stirring rod 13 to rotate. Through the meshing transmission of gear 15 and gear 2 16, the stirring rod 2 14 rotates synchronously in opposite directions, fully stirring the heat transfer oil to ensure uniform oil temperature distribution in the tank and avoid local overheating that could lead to cracking or carbon buildup of the heat transfer oil. Temperature sensor 2 11 continuously monitors the hot oil temperature. The system is now in closed-loop control. After heating, the high-temperature heat transfer oil is drawn from the hot oil tank 3 by the circulating pump 21 and transported to the external heat-using equipment through the circulating pipe 22 for heat exchange. The returned oil after use enters the filter box 4 through the return pipe 20 and passes through three sets of filter plates 18 with progressively larger mesh sizes. This achieves multi-stage interception of contaminants such as carbonized particles and mechanical impurities in the heat transfer oil. The differential pressure sensor 19 detects the pressure difference before and after the filter plate 18 in real time. When the pressure difference exceeds the set threshold, the controller 101 issues a prompt indicating that the filter plate 18 needs to be cleaned or replaced.

[0029] Example 2: As Figures 1-6 As shown, the side of the filter box 4 is provided with a disassembly mechanism 25. The disassembly mechanism 25 includes a fixing plate 251. A limit rod 252 is slidably connected inside the fixing plate 251. A limit hole 253 is opened on the side of the insert block 23. A limit plate 254 is fixedly connected to the surface of the limit rod 252. A tension spring 255 is sleeved on the surface of the limit rod 252. The limit rod 252 is slidably connected to the limit hole 253. One end of the tension spring 255 is fixedly connected to the side of the limit plate 254, and the other end of the tension spring 255 is fixedly connected to the side of the fixing plate 251.

[0030] In this embodiment, when replacing the filter plate 18, first pull the limiting rod 252 in the disassembly mechanism 25 to make it retract against the elastic force of the tension spring 255, so that the end of the limiting rod 252 disengages from the limiting hole 253 on the insert block 23 and releases the locking state. Then, the filter plate 18 is pulled out horizontally along the slot 24, so that the filter plate 18 can be cleaned or replaced. During installation, align the insert block 23 of the filter plate 18 with the slot 24 and push it in until it is fully inserted. Release the limiting rod 252, and the tension spring 255 pushes the limiting rod 252 to automatically spring into the limiting hole 253, completing the mechanical locking. This structure realizes the quick disassembly and assembly of the filter assembly without disassembling the pipeline or stopping the machine to drain the oil, which greatly improves the maintenance efficiency and ensures the continuous and stable operation of the heat medium circulation system. The controller 101 coordinates the working status of each sensor, pump and heating element to realize intelligent control of the entire heat medium circulation process.

[0031] The working principle of this embodiment is as follows: During use, heat transfer medium is first injected into the cold oil tank 2 through the water inlet pipe 8. The liquid level sensor 7 in the cold oil tank 2 monitors the liquid level in real time. When the liquid level reaches the set value, the injection stops. The controller 101 receives the detection data from the temperature sensor 6. If the temperature of the heat transfer medium in the cold oil tank 2 is lower than the preset value, the U-shaped preheating pipe 5 is activated to preheat the heat transfer medium. After the temperature reaches the set temperature, the preheating pipe 5 is closed, and the delivery pump 9 is activated to transport the preheated heat transfer medium from the cold oil tank 2 to the hot oil tank 3. The temperature sensor 11 in the hot oil tank 3 detects the heat transfer medium. If the target temperature is not reached, the controller 101 activates the two symmetrically arranged variable frequency heating tubes 10 and turns on the motor 17. The motor 17 drives the stirring rod 13 to rotate, and through the meshing gears 15 and 16, drives the stirring rod 14 to rotate in the opposite direction, thus stirring the heat medium in both directions. After the heat medium temperature reaches the target temperature, the variable frequency heating tubes 10 adjust their power to maintain a stable temperature. The heat medium is then transported to the heating chamber of the organic heat carrier boiler through the conveying pipe 12. After the heat-using equipment has finished using the heat medium, it flows back to the filter box 4 through the return pipe 20. After being filtered through three sets of filter plates 18 with increasing mesh sizes, the filtered heat medium is discharged into the circulation pipe 22 via the circulation pump 21, and then flows into the cold oil tank 2 for circulation. The differential pressure sensor 19 in the filter box 4 monitors the pressure difference before and after the filter plate 18 in real time. When the pressure difference exceeds the set threshold, the controller 101 issues a filter element replacement prompt. When the filter plate 18 needs to be cleaned or replaced, the operator pulls the limit rod 252 in the disassembly mechanism 25, causing the limit rod 252 to retract against the elastic force of the tension spring 255, and its end disengages from the limit on the insert block 23. Hole 253 is opened to release the locked state. Then, the filter plate 18 is pulled out horizontally along the slot 24 for cleaning or replacement. During installation, the insert block 23 of the filter plate 18 is aligned with the slot 24 and pushed in until it is fully inserted. The limit rod 252 is released, and the tension spring 255 drives the limit rod 252 to automatically spring into the limit hole 253 to complete the locking. The liquid level sensor 7 monitors the oil level in the cold oil tank 2 in real time. If necessary, heat transfer oil is added through the water inlet pipe 8. The entire circulation process is coordinated by the controller 101 to realize the intelligent control of the heat medium circulation system.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A heat medium circulation control structure for an organic heat carrier boiler, comprising a base (1), characterized in that: A controller (101) is fixedly installed on the upper surface of the base (1). A cold oil tank (2), a hot oil tank (3), and a filter box (4) are also fixedly installed on the upper surface of the base (1). A preheating tube (5) is fixedly installed inside the cold oil tank (2). A temperature sensor (6) is fixedly installed on the inner wall of the cold oil tank (2). A liquid level sensor (7) is fixedly installed on the inner wall of the cold oil tank (2). A water inlet pipe (8) is fixedly connected to the side of the cold oil tank (2). A delivery pump (9) is fixedly installed on the surface of the base (1). A frequency conversion heating tube (10) is fixedly installed inside the hot oil tank (3). A temperature sensor (11) is fixedly installed on the inner wall of the hot oil tank (3). A delivery pipe (12) is fixedly connected to the side of the hot oil tank (3). 3) is internally connected to a stirring rod 1 (13) and a stirring rod 2 (14). A gear 1 (15) is fixedly connected to the surface of the stirring rod 1 (13). A gear 2 (16) is fixedly connected to one end of the stirring rod 2 (14). A motor (17) is fixedly installed on the surface of the hot oil tank (3). A filter plate (18) is provided inside the filter box (4). A differential pressure sensor (19) is fixedly installed on the inner wall of the filter box (4). A return pipe (20) is fixedly connected to the side of the filter box (4). A circulation pump (21) is fixedly installed on the surface of the base (1). A circulation pipe (22) is fixedly connected to the output end of the circulation pump (21). A plug (23) is fixedly connected to the side of the filter plate (18). A slot (24) is opened on the surface of the filter box (4).

2. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The suction end of the delivery pump (9) is connected to the interior of the cold oil tank (2), and the output end of the delivery pump (9) is connected to the interior of the hot oil tank (3).

3. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The output end of the motor (17) is fixedly connected to one end of the stirring rod (13), and the gear one (15) and gear two (16) mesh with each other.

4. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The suction end of the circulating pump (21) is connected to the inside of the hot oil tank (3), and one end of the circulating pipe (22) is connected to the inside of the cold oil tank (2).

5. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The preheating tube (5) is arranged in a U-shape, and there are two sets of frequency conversion heating tubes (10), which are symmetrically arranged along the inner wall of the hot oil tank (3).

6. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The number of filter plates (18) is three sets, and the mesh size of the filter plates (18) increases sequentially along the flow direction inside the filter box (4).

7. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The insert (23) and the slot (24) are slidably connected, and the cross-sectional shape of the insert (23) and the cross-sectional shape of the slot (24) are both convex.

8. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 1, characterized in that: The filter box (4) is provided with a disassembly mechanism (25) on its side. The disassembly mechanism (25) includes a fixing plate (251). A limit rod (252) is slidably connected inside the fixing plate (251). A limit hole (253) is opened on the side of the insert block (23). A limit plate (254) is fixedly connected to the surface of the limit rod (252). A tension spring (255) is sleeved on the surface of the limit rod (252).

9. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 8, characterized in that: The limiting rod (252) is slidably connected to the limiting hole (253).

10. The heat medium circulation regulation structure of the organic heat carrier boiler according to claim 8, characterized in that: One end of the tension spring (255) is fixedly connected to the side of the limiting plate (254), and the other end of the tension spring (255) is fixedly connected to the side of the fixing plate (251).

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