Efficient and energy-saving sleeve type heat tracing device
Through the design of the casing structure and multi-section heat exchange interval, the problem of uneven heating effects of the existing heat tracing device is solved, and uniform heating of the ammonia supply pipeline and efficient energy-saving and anti-blocking effects are achieved.
Patent Information
- Application Number
- CN202420518164.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The existing heat tracing device has uneven heating effects when heating the ammonia supply pipeline, which leads to the easy blockage of the pipeline under low temperature environments, making it difficult to achieve the expected anti-blocking effect.
Adopt a sleeve-type structure, with outer pipes on the inner pipes sleeved to form a heat-deployment space. The uniform wrapping of steam and liquid ammonia temperature adjustment are achieved through the heating regulating valve and temperature monitoring module, ensuring uniform heating of the ammonia supply pipeline and passing through multiple sections The heat exchange interval and partition improve heating efficiency.
The uniform heating of liquid ammonia is achieved, which avoids heat waste, ensures that the ammonia supply system is efficiently prevented in low temperature environments, and ensures that the ammonia supply pipeline is unobstructed.
Smart Images
Figure CN222164024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat tracing devices, in particular to a high-efficiency and energy-saving sleeve-type heat tracing device. Background Art
[0002] The ammonia supply pipeline is a component of the degassing system of the power plant. Due to the lower temperature in winter, the degassing product gas undergoes reverse reaction and crystallization, which can easily lead to blockage of the ammonia supply pipeline in front of the furnace, affecting environmental protection and emission standards. Pipeline heating is usually used to deal with such problems. The common heating method is to wrap the heating belt around the pipeline and then heat the heating belt through a power supply. However, due to the uneven heating effect of the heating belt, it is easy to cause local overheating or overcooling of the pipeline. It is difficult to achieve the expected heating and anti-blocking effect, so it is necessary to improve it. Summary of the invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a high-efficiency and energy-saving sleeve-type heating device, which adjusts the heat supply according to the temperature of liquid ammonia in different environments, realizes uniform heating of the ammonia supply pipeline, and ensures the smooth flow of the ammonia supply pipeline in a low-temperature environment.
[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a high-efficiency and energy-saving sleeve-type heating device, comprising an inner tube, an outer tube is sleeved on the outer side of the inner tube, and a heat distribution space is formed between the outer tube and the inner tube; the heating pipeline is connected to the heat distribution space through a heating regulating valve; the inner tube is provided with a temperature monitoring module, and the monitoring value feedback signal output end of the temperature monitoring module is electrically connected to the control signal receiving end of the heating regulating valve through a control module.
[0005] Furthermore, the heat distribution space is arranged into a plurality of heat exchange intervals along the length direction of the inner tube, and each heat exchange interval is individually connected to the heating regulating valve.
[0006] Furthermore, the temperature monitoring module is provided at the junction of the two heat exchange intervals, and the temperature monitoring module is electrically connected to the heating regulating valve corresponding to the heat exchange interval at the rear side.
[0007] Furthermore, the heating pipeline is a steam supply pipeline, and each of the heat exchange intervals is connected to a drain pipeline.
[0008] Furthermore, a plurality of partitions are arranged in the heat distribution space along its length direction, and the partitions and the inner wall of the outer tube on one side of the inner tube form steam vents, and two adjacent steam vents are relatively staggered.
[0009] Furthermore, a heat-insulating structural layer is provided on the wall of the outer tube.
[0010] Beneficial effects: The utility model is a high-efficiency and energy-saving sleeve-type heating device, which adopts a sleeve-type structure and uses steam to evenly wrap the outside of the inner tube, so as to achieve uniform heating of liquid ammonia; the supply of steam is adjusted according to the actual temperature of the liquid ammonia, which achieves the expected effect while avoiding heat waste, and realizes the high-efficiency and energy-saving anti-blocking effect of the ammonia supply system in a low-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Attached Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0012] Attached Figure 2 It is a schematic diagram of the structural cross-section of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The utility model is further described below in conjunction with the accompanying drawings.
[0014] As attached Figure 1-2 The high-efficiency and energy-saving sleeve-type heating device comprises an inner tube 1 for conveying liquid ammonia, an outer tube 2 is sleeved on the outer side of the inner tube 1, and a heat distribution space 3 is formed between the outer tube 2 and the inner tube 1; a heating pipeline 4 is connected to the heat distribution space 3 through a heating regulating valve 5; the inner tube 1 is provided with a temperature monitoring module 6, and the monitoring value feedback signal output end of the temperature monitoring module 6 is electrically connected to the control signal receiving end of the heating regulating valve 5 through a control module.
[0015] This solution adopts a double-layer sleeve structure, with the inner tube serving as the ammonia supply pipeline, and the heating medium passing between the outer tube and the inner tube, so that the heating medium is evenly wrapped around the outside of the inner tube, thereby evenly heating the liquid ammonia in the inner tube, ensuring that the liquid ammonia will not be affected by the ambient temperature and crystallize, thereby avoiding blockage of the ammonia supply pipeline in a low temperature environment.
[0016] Preferably, the heat distribution space 3 is arranged as a plurality of heat exchange intervals 31 along the length direction of the inner tube 1, and each heat exchange interval 31 is individually connected to the heat supply regulating valve 5. The heat supply regulating valve is connected to the starting end of the corresponding heat exchange interval through a pipe fitting to ensure that the flow direction of the heating medium in the heat distribution space is consistent with the supply direction of liquid ammonia. If the ammonia supply pipeline has a long transportation distance and passes through multiple areas with large ambient temperature differences, then by setting the heat distribution space as a plurality of heat exchange intervals, it is possible to form heating zones with different temperatures in the length direction. Each heating zone adjusts the heat supply according to the temperature of the liquid ammonia in the corresponding environment, so that precise heating can be achieved to reduce heat loss.
[0017] The temperature monitoring module 6 is provided at the junction of the two heat exchange sections 31, and the temperature monitoring module 6 is electrically connected to the heat supply regulating valve 5 corresponding to the rear heat exchange section 31. The temperature monitoring module adopts a pipeline thermometer, which is used to measure the temperature of liquid ammonia in the ammonia supply pipeline. It is placed at the junction of adjacent heat exchange sections, and can measure the temperature of the transported liquid ammonia in real time, thereby providing a reliable basis for supplementary heat supply regulation. The heat supply of each section is very accurate and will not cause heat loss.
[0018] Preferably, the heating pipeline 4 is a steam supply pipeline, and each of the heat exchange intervals 31 is connected to a drain pipe 7, which is connected to the end of the corresponding heat exchange interval and is used to discharge the drain formed after the steam condenses, and the output steam can be collected and reused.
[0019] A plurality of partitions 32 are arranged along the length direction of the heat distribution space 3. The partitions 32 and the inner wall of the outer tube 2 on one side of the inner tube 1 form steam holes 33. Two adjacent steam holes 33 are relatively staggered.
[0020] Since hot steam has the characteristic of rising, if the pipeline is laid out horizontally and the pipe diameter is large, when the required steam supply is small, the steam delivered may be concentrated in the upper part of the heating area, resulting in uneven heating from top to bottom. By staggered partitions, the steam is guided to float up and down in the heating space, ensuring that the steam flows through every corner and is fully wrapped around the outside of the inner tube to achieve the expected uniform heating effect.
[0021] Preferably, the tube wall of the outer tube 2 is provided with a thermal insulation structure layer, and the thermal insulation material can be coated or wrapped on the surface of the outer tube, which can effectively reduce the heat exchange between the heating medium and the outside atmosphere, reduce the loss of heat, and ensure the expected anti-blocking effect.
[0022] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A high-efficiency and energy-saving casing-type heating device, characterized in that: The invention comprises an inner tube (1), an outer tube (2) is sleeved on the outer side of the inner tube (1), and a heat distribution space (3) is formed between the outer tube (2) and the inner tube (1); a heating pipeline (4) is connected to the heat distribution space (3) via a heating regulating valve (5); the inner tube (1) is provided with a temperature monitoring module (6), and a monitoring value feedback signal output end of the temperature monitoring module (6) is electrically connected to a control signal receiving end of the heating regulating valve (5) via a control module.
2. The high-efficiency and energy-saving casing-type heating device according to claim 1 is characterized in that: The heat distribution space (3) is arranged along the length direction of the inner tube (1) into a plurality of heat exchange sections (31), and each heat exchange section (31) is individually connected to the heat supply regulating valve (5).
3. The high-efficiency and energy-saving casing-type heating device according to claim 2 is characterized in that: The temperature monitoring module (6) is provided at the junction of the two heat exchange intervals (31), and the temperature monitoring module (6) is electrically connected to the heating regulating valve (5) corresponding to the heat exchange interval (31) at the rear side.
4. The high-efficiency and energy-saving casing-type heating device according to claim 3 is characterized in that: The heating pipeline (4) is a steam supply pipeline, and each of the heat exchange intervals (31) is connected to a drain pipeline (7).
5. The high-efficiency and energy-saving casing-type heating device according to claim 4 is characterized in that: A plurality of partitions (32) are arranged in the heat distribution space (3) along its length direction, and the partitions (32) and the inner wall of the outer tube (2) on one side of the inner tube (1) form steam vents (33), and two adjacent steam vents (33) are arranged in a staggered manner relative to each other.
6. The high-efficiency and energy-saving casing-type heating device according to claim 5 is characterized in that: The tube wall of the outer tube (2) is provided with a heat-insulating structural layer.