Energy-saving medium heater heat shrink tube oil heating expansion machine
Patent Information
- Application Number
- CN202521906960.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-05
AI Technical Summary
[0003]传统油扩机模温加热系统采用油槽底部集中加热与固定发热管直热的组合模式，受限于单点热源布局与热量传导梯度差异，甘油介质易形成局部温差，导致热场分布不均，直接影响热缩套管加热扩张过程中的温度一致性
[0014]本实用新型的有益效果为：设置有循环加热机构，高温油泵持续不断将加热油箱中加热的热油泵入油槽内，将之前使用的油逐步替换，被替换的油重新经回收油箱、高温油泵送回加热油箱中加热，最后再由高温油泵送入油槽内，可以有效消除油槽内油品的局部过热现象，保证均衡整个油槽的热场分布，从根本上规避了因积热导致的甘油高温劣化问题，显著降低积碳生成概率，保障了加热介质即油品的物理性能稳定性与使用寿命，为热缩套管的高质量扩张提供了可靠的温度环境支撑。
Smart Images
Figure CN224644266U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat shrink tubing oil heating expansion, specifically relating to an energy-saving medium heater heat shrink tubing oil heating expansion machine. Background Technology
[0002] A heat shrink tubing expander is a device specifically designed for expanding heat shrink tubing. It uses a specific heating method to bring the heat shrink tubing to a certain temperature, making it highly elastic. Then, it is expanded evenly through an expansion mold and finally rapidly cooled and shaped. This allows for changes in the diameter and length of the heat shrink tubing to meet different application needs.
[0003] Traditional oil expansion machine mold temperature heating systems employ a combination of centralized heating at the bottom of the oil tank and direct heating from fixed heating elements. Limited by the single-point heat source layout and differences in heat conduction gradients, the glycerol medium is prone to localized temperature differences, leading to uneven heat distribution and directly affecting the temperature consistency during the heat shrink tubing expansion process. Simultaneously, the concentrated heat source area remains at a high temperature for extended periods, easily triggering localized heat accumulation effects, accelerating the thermal oxidation and deterioration of the glycerol medium, increasing the risk of carbon buildup on the tube walls and heating element surfaces, and consequently affecting the medium's thermal conductivity and the equipment's operational stability. Utility Model Content
[0004] This invention provides an energy-saving medium heater-type heat shrink tubing oil heating expansion machine to solve the above-mentioned technical problems.
[0005] The solution adopted by this utility model to achieve its technical effect is as follows:
[0006] An energy-saving medium heater for heat shrink tubing oil heating and expansion includes a base frame, an oil tank, and a circulating heating mechanism. The oil tank is located on top of the base frame. An oil inlet is provided at the inlet end of the oil tank, and a recovery port is provided at the outlet end. The circulating heating mechanism includes a recovery oil tank, a high-temperature oil pump, and a heating oil tank. The recovery oil tank, high-temperature oil pump, and heating oil tank are mounted on the base frame. The inlet of the recovery oil tank is connected to the recovery port. The inlet of the high-temperature oil pump is connected to the outlet of the recovery oil tank. The outlet of the high-temperature oil pump is connected to the inlet of the heating oil tank. The outlet of the heating oil tank is connected to the oil inlet. A heating rod is horizontally arranged in the middle of the heating oil tank.
[0007] Preferably, an insulation cover is provided on the outside of the heating oil tank; the insulation cover is mounted on the base frame.
[0008] Preferably, an insulated box is provided on the base frame; the insulated box is covered on the outside of the oil tank; the inside of the insulated box is in communication with the inside of the insulated cover.
[0009] Preferably, the bottom of the oil tank is provided with a heat-insulating tank; the heat-insulating tank is connected to the interior of the heat-insulating box.
[0010] Preferably, a heat exchange box is provided at the inlet end of the oil tank; a plurality of oil injection ports are evenly spaced on one side of the heat exchange box; an injection port is provided at the bottom of the heat exchange box; and the injection port is connected to the heating oil tank.
[0011] Preferably, a buffer cover is provided at the bottom of the heat exchanger; the buffer cover is positioned above the injection port.
[0012] Preferably, the outlet end of the oil tank is provided with an oil return chamber; the recovery port is located at the top of the oil return chamber.
[0013] Preferably, the heat shrink tubing oil heating expansion machine further includes an inlet assembly; the inlet assembly is disposed on the base frame and is located on one side of the inlet end of the oil tank.
[0014] The beneficial effects of this utility model are as follows: A circulating heating mechanism is provided, and a high-temperature oil pump continuously pumps hot oil from the heating oil tank into the oil tank, gradually replacing the previously used oil. The replaced oil is then returned to the heating oil tank via a recovery oil tank and a high-temperature oil pump for reheating, and finally pumped back into the oil tank by the high-temperature oil pump. This effectively eliminates localized overheating of the oil in the oil tank, ensuring a balanced thermal distribution throughout the oil tank. It fundamentally avoids the problem of high-temperature glycerin degradation caused by heat accumulation, significantly reduces the probability of carbon buildup, and ensures the stability and service life of the physical properties of the heating medium (oil). This provides a reliable temperature environment for the high-quality expansion of heat shrink tubing. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the heat shrink tubing oil heating expansion machine disclosed in this embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the heat preservation mechanism disclosed in an embodiment of the present utility model;
[0017] Figure 3 This is a schematic diagram of the circulating heating mechanism disclosed in an embodiment of the present utility model;
[0018] Figure 4 This is a schematic diagram of the top of the oil tank disclosed in an embodiment of the present utility model;
[0019] Figure 5 This is a schematic diagram of the bottom of the oil tank disclosed in an embodiment of this utility model.
[0020] Labeling instructions: 1-Base frame, 2-Oil tank, 3-Oil inlet, 4-Recovery port, 5-Recovery oil tank, 6-High temperature oil pump, 7-Heating oil tank, 8-Heating rod, 9-Insulation cover, 10-Insulation box, 11-Insulation trough, 12-Heating chamber, 13-Injection port, 14-Buffer cover, 15-Return oil chamber, 16-Inlet assembly. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may have an intervening element present. When an element is referred to as being "fixedly connected to" another element, it can be a common fixing connection method such as welding, bolting, or gluing.
[0022] Please refer to Figure 1-5 This utility model discloses a heat shrink tubing oil heating expansion machine for an energy-saving medium heater, comprising a base frame 1, an oil tank 2, and a circulating heating mechanism; the oil tank 2 is disposed on the top of the base frame 1; an oil inlet 3 is provided at the inlet end of the oil tank 2; a recovery port 4 is provided at the outlet end of the oil tank 2; the circulating heating mechanism includes a recovery oil tank 5, a high-temperature oil pump 6, and a heating oil tank 7; the recovery oil tank 5, the high-temperature oil pump 6, and the heating oil tank 7 are disposed on the base frame 1; the inlet of the recovery oil tank 5 is connected to the recovery port 4; the inlet of the high-temperature oil pump 6 is connected to the outlet of the recovery oil tank 5; the outlet of the high-temperature oil pump 6 is connected to the inlet of the heating oil tank 7; the outlet of the heating oil tank 7 is connected to the oil inlet 3; a heating rod 8 is horizontally disposed in the middle of the heating oil tank 7.
[0023] Specifically, an insulation cover 9 is provided on the outside of the heating oil tank 7; the insulation cover 9 is mounted on the base frame 1 to prevent heat loss during the heating process.
[0024] Specifically, an insulation box 10 is installed on the base frame 1; the insulation box 10 covers the outside of the oil tank 2; the inside of the insulation box 10 is connected to the inside of the insulation cover 9. The heat generated when heating the oil is transferred from the inside of the insulation cover to the insulation box 10 to ensure the heat of all parts of the oil tank 2 and prevent the oil tank 2 from cooling down.
[0025] Specifically, the bottom of the oil tank 2 is provided with a heat insulation groove 11; the heat insulation groove 11 is connected to the interior of the heat insulation box 10. The heat insulation groove 11 can increase the area of heat contact between the outside of the oil tank 2 and the inside of the heat insulation box 10.
[0026] Specifically, a heat exchanger 12 is provided at the inlet end of the oil tank 2; a plurality of oil injection ports 3 are evenly spaced on one side of the heat exchanger 12; an injection port 13 is provided at the bottom of the heat exchanger 12; the injection port 13 is connected to the heating oil tank 7. The high-temperature oil pump 6 first injects hot oil into the heat exchanger 12, and after reaching a certain height, it simultaneously enters various parts of the inlet end of the oil tank 2 through the plurality of oil injection ports 3, ensuring that the heat field distribution is uniform in various parts of the oil tank 2.
[0027] Specifically, a buffer cover 14 is provided at the bottom of the heat exchanger 12; the buffer cover 14 is placed above the injection port 13 to ensure that the hot oil enters the heat exchanger 12 in a uniform and gentle manner.
[0028] Specifically, the oil tank 2 is provided with an oil return chamber 15 at its outlet end; the recovery port 4 is located at the top of the oil return chamber 15. The oil in the oil tank 2 will be recovered from the recovery port 4 into the recovery oil tank 5 after it has passed through the oil return chamber 15.
[0029] Specifically, the heat shrink tubing oil heating and expansion machine also includes an inlet assembly 16; the inlet assembly 16 is disposed on the base frame 1 and is located on one side of the inlet end of the oil tank 2. The inlet assembly 16 is used to pull the heat shrink tubing into the oil tank 2.
[0030] As can be seen from the above description, this utility model can effectively ensure a balanced thermal field distribution throughout the oil tank, guarantee the stability of the physical properties and service life of the heating medium, i.e., the oil, and provide a reliable temperature environment support for the high-quality expansion of the heat shrink tubing.
[0031] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. It should be noted that the protection scope of the present utility model includes, but is not limited to, the above embodiments; the specific structures disclosed in the accompanying drawings are only preferred embodiments of the present utility model. Those skilled in the art can develop other embodiments based on this. Any simple modifications or equivalent substitutions that do not depart from the innovative concept of the present utility model are all covered by the present utility model and fall within the protection scope of the present utility model.
Claims
1. An energy-saving medium heater-type heat shrink tubing oil heating expansion machine, characterized in that, include: Base frame; Oil tank; The oil tank is located on the top of the base frame; the inlet end of the oil tank is provided with an oil filling port; the outlet end of the oil tank is provided with a recycling port. A circulating heating mechanism includes a recovery oil tank, a high-temperature oil pump, and a heating oil tank. The recovery oil tank, the high-temperature oil pump, and the heating oil tank are mounted on the base frame. The inlet of the recovery oil tank is connected to the recovery port. The inlet of the high-temperature oil pump is connected to the outlet of the recovery oil tank. The outlet of the high-temperature oil pump is connected to the inlet of the heating oil tank. The outlet of the heating oil tank is connected to the oil filling port. A heating rod is horizontally arranged in the middle of the heating oil tank.
2. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 1, characterized in that: An insulation cover is provided on the outside of the heating oil tank; the insulation cover is mounted on the base frame.
3. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 2, characterized in that: An insulated box is installed on the base frame; the insulated box is covered on the outside of the oil tank; the inside of the insulated box is connected to the inside of the insulated cover.
4. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 3, characterized in that: The bottom of the oil tank is provided with a heat insulation tank; the heat insulation tank is connected to the interior of the heat insulation box.
5. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 1, characterized in that: A heat exchange box is provided at the inlet end of the oil tank; a plurality of oil injection ports are evenly spaced on one side of the heat exchange box; an injection port is provided at the bottom of the heat exchange box; the injection port is connected to the heating oil tank.
6. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 5, characterized in that: The bottom of the heat exchanger is provided with a buffer cover; the buffer cover is positioned above the injection port.
7. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 1, characterized in that: The oil tank has an oil return chamber at its outlet end; the recovery port is located at the top of the oil return chamber.
8. The energy-saving heat-shrinkable tube oil heating and expanding machine for medium heater according to claim 1, characterized in that: The heat shrink tubing oil heating expansion machine also includes an inlet assembly; the inlet assembly is mounted on the base frame and is located on one side of the inlet end of the oil tank.