High-efficiency heat transfer oil circulation heating device

Abstract

This invention discloses a high-efficiency heat-conducting oil circulation heating device, comprising a cavity for melting adhesive blocks, a bottom heat exchange jacket at least at the bottom of the cavity and filled with heat-conducting oil, multiple heat exchange tubes spaced apart within the cavity, each heat exchange tube being filled with heat-conducting oil communicating with the heat exchange jacket, and the heat exchange tubes or portions thereof forming a preheating section spaced from the bottom of the cavity. The potting adhesive heat-conducting oil heating system is based on the existence of temperature differences between different parts of a thermal system, i.e., the existence of thermal potential energy differences within the thermal system. With thermal potential energy differences, macroscopic displacement occurs between the parts within the thermal system, and heat conduction occurs between different parts of the system. The state of the system continuously changes until the temperature difference disappears and a new thermal equilibrium is reached.

Description

Technical Field

[0001] This invention belongs to the field of road maintenance and construction, specifically relating to a high-efficiency heat transfer oil self-circulation heating device. Background Technology

[0002] Currently, the heating method for road maintenance potting compound application is basically to directly heat the container or barrel with an open flame. Although this method is widely used, it results in excessively high local temperatures, large temperature differences during the heating process, and the high viscosity and poor fluidity of the potting compound. In addition, with one side of the heating container wall exposed to fire and the other side exposed to the compound, the contact surface of the compound heats up rapidly, leading to excessively high local temperatures. Furthermore, the poor fluidity of the potting compound in its solid or semi-molten state makes it extremely prone to coking and aging, and it is also prone to causing fires. Moreover, the service life of the heating container is short.

[0003] CN203729178U discloses a production equipment for asphalt pavement reflective cracking maintenance materials, including a tank for holding materials, a material circulation device for circulating materials from the lower part of the tank to the upper part of the tank, a material heating device for heating the materials in the tank, and a stirrer for stirring the materials in the tank. The material circulation device, material heating device, and stirrer are all connected to the tank. The bottom of the tank has an outlet for discharging potting compound, and the outlet is equipped with a discharge valve.

[0004] To crush the materials, a shearing machine is used, which results in a complex overall structure and high operating costs. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-efficiency heat transfer oil self-circulation heating device, especially a high-efficiency heat transfer oil self-circulation heating device, which has a simpler and more feasible material preheating and chopping structure, effectively improving heating efficiency.

[0006] This invention is achieved through the following technical solution:

[0007] A high-efficiency heat transfer oil circulation heating device includes a cavity for melting glue blocks, a bottom heat exchange jacket arranged at least at the bottom of the cavity and filled with heat transfer oil, a plurality of heat exchange tubes spaced apart in the cavity, the heat exchange tubes being filled with heat transfer oil communicating with the heat exchange jacket, and the heat exchange tubes or a portion thereof constituting a preheating section spaced apart from the bottom of the cavity.

[0008] As one embodiment, the sidewall of the cavity is provided with a side heat exchange jacket that communicates with the bottom heat exchange jacket, and both ends of the heat exchange tube are respectively connected to the side heat exchange jackets on both sides.

[0009] As one embodiment, the heat exchange tube forms a downward-sloping grate-shaped heat exchange surface with one side higher than the other, and the high end of the heat exchange tube is located at the feed inlet of the cavity.

[0010] As one option, the heat exchange tube is a U-shaped structure with the opening facing downwards and both ends connected to the bottom heat exchange jacket.

[0011] As one embodiment, the middle section of the heat exchange tube forms a downward-sloping grate-shaped heat exchange surface with one side higher than the other, and the high end of the heat exchange tube is located at the feed inlet of the cavity.

[0012] As one embodiment, the heat exchange tube is L-shaped, with one end connected to the bottom heat exchange jacket and the other end connected to the side heat exchange jacket.

[0013] As one embodiment, a spirally rising exhaust duct is provided on the outer side of the side heat exchange jacket, and the lower end of the exhaust duct is connected to the combustion chamber.

[0014] As one option, a combustion chamber for directly heating the bottom heat exchange jacket is provided at the bottom of the cavity.

[0015] As one option, an upward-pushing stirring blade is installed inside the cavity.

[0016] One possible solution also includes a glue discharge mechanism, which includes a glue pump driven by a glue pump motor and a universal joint for the glue discharge tube linked to the glue discharge port of the glue pump.

[0017] The advantages and beneficial effects of this invention are as follows:

[0018] The potting compound thermal oil heating element system operates based on the temperature differences between different parts of a thermal system, i.e., the difference in thermal potential energy within the system. This difference in thermal potential energy leads to macroscopic displacement within the system, resulting in heat conduction between different parts. The system's state continuously changes until the temperature difference disappears, reaching a new thermal equilibrium. The temperature difference is the unbalanced thermal potential energy that drives heat transfer; thermal potential energy is the driving force of temperature transfer; and the disappearance of the temperature difference is the condition for establishing thermal equilibrium. This system achieves thermal equilibrium and equipotential by heating the heat transfer oil in the combustion chamber of the burner to increase its thermal kinetic energy. This creates a temperature imbalance within the system, causing the heat transfer oil to generate a high potential energy difference and undergo rapid thermal motion, facilitating heat transfer. The heat transfer oil, acting as a heat transfer medium, completely surrounds the container in the form of a heat-conducting jacket. A grate-type heat transfer oil heating circulation system, consisting of heat exchange tubes installed at different heights on the front and rear walls of the container, forms a double-layer heating device. This increases the heating area and improves the heat exchange rate. The potting compound is not in direct contact with the fire through the container walls but is indirectly heated by the heat transfer oil. This prevents localized rapid temperature rise that could lead to aging and carbonization of the compound, and also avoids fire hazards. Furthermore, temperature detection devices are installed in the potting compound container and the jacketed heat transfer oil, enabling closed-loop control of combustion and temperature detection points, further controlling coking and aging. Attached Figure Description

[0019] Figure 1 This is a side view of the structure of the present invention.

[0020] Figure 2 for Figure 1 The diagram shows the AA cross-section structure.

[0021] Figure 3 This is a top view of the structure of the present invention.

[0022] Figure 4 for Figure 3 The front view of the BB section shown.

[0023] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0025] like Figure 1-4As shown, a high-efficiency heat transfer oil circulating heating device of the present invention includes a cavity for melting glue blocks, a bottom heat exchange jacket 3 filled with heat transfer oil at least at the bottom of the cavity, and a plurality of heat exchange tubes 10 spaced apart within the cavity. Each heat exchange tube is filled with heat transfer oil communicating with the heat exchange jacket. The heat exchange tubes or portions thereof constitute a preheating section spaced from the bottom of the cavity. Generally, the preheating section is located in the middle or upper-middle part of the cavity.

[0026] The heat exchange tubes are at least partially horizontal or at an angle to the horizontal plane in the middle or upper part of the cavity. This is equivalent to forming a comb-like, grate-like structure or a multi-tooth hot knife-like preheating section inside the cavity. Large pieces of rubber can be thermally cut in the upper part, preventing large pieces of rubber from sinking to the bottom and causing charring and low heating efficiency. Moreover, the design of the heating layer in the upper part effectively ensures the overall heating efficiency.

[0027] Specifically, the preheating section in the upper middle part can be configured in various ways. For example, the side wall of the cavity can be provided with a side heat exchange jacket that communicates with the bottom heat exchange jacket. The bottom heat exchange jacket and the side heat exchange jacket are a single integrated cavity design, similar to existing technologies. Multiple insulation mechanisms 18 are also provided on the outside to achieve overall temperature control. The two ends of the heat exchange tubes are respectively connected to the side heat exchange jackets on both sides. Multiple straight heat exchange tubes are located on the same plane, and the heat exchange tubes form a grate-shaped heat exchange surface that slopes downwards from the inlet 20 of the cavity. Adopting a configuration with one side higher and one side lower, the rolling action of the rubber block can be fully utilized to achieve rolling cutting and improve melting efficiency.

[0028] In another embodiment, the heat exchange tube is a U-shaped structure with the opening facing downwards and both ends are connected to the bottom heat exchange jacket. The heat exchange tube is directly connected to the bottom heat exchange jacket 3, resulting in a relatively higher temperature and better heating effect. At the same time, the top middle section of the heat exchange tube structure can also form a grate-shaped heat exchange surface preheating part that slopes downwards from the feed inlet of the cavity.

[0029] As another embodiment, the heat exchange tube can also be an L-shaped heat exchange tube with one end connected to the bottom heat exchange jacket and the other end connected to the side heat exchange jacket. The L-shaped heat exchange tube can make full use of the thermal potential difference between the two ends, maintain the overall cutting and crushing effect, and ensure the overall heating efficiency. Furthermore, the shape of the preheating section can be changed; it can be a flat surface or a spherical preheating section with a concave center. This allows it to work in conjunction with the bottom stirring paddle 19, which is an upward-pushing spiral stirring paddle driven by a hydraulic stirring drive motor 16. This creates a stirring drive for the fluid in the cavity, and the upward push of the stirring paddle, combined with the gravity accumulation in the middle, forms a tumbling motion in the middle, avoiding dead zones and improving overall efficiency.

[0030] The cavity includes a combustion chamber 2 at the bottom for directly heating the bottom heat exchange jacket. A burner 1 is located on one side of the combustion chamber. To fully utilize the heat in the combustion chamber, a spirally rising exhaust pipe 5 is provided on the outer side of the side heat exchange jacket. The upper end of the exhaust pipe 5 is connected to the exhaust port 8, and the lower end is connected to the combustion chamber 2, forming a high-efficiency hot airflow heating layer around the cavity. This extends the travel time of the hot airflow along the rotating flue, allowing the exhaust pipe, with an internal flue gas temperature of 350-450 degrees Celsius, to spiral around the cavity to the flue outlet. This effectively absorbs the heat in the airflow, thereby significantly improving the heat utilization rate.

[0031] The combustion radiation heat source heating system, which consists of the high-efficiency burner combustion chamber assembly and the jacketed oil-filled heating element, operates based on the principle of thermodynamic state. The combustion radiation heat source heating system and the grate-type heat transfer oil circulation heating system form a two-stage heating process. Under the action of stirring, the heat potential energy of the potting compound is rapidly transferred due to the temperature difference, which causes the potting compound to heat up rapidly. The heated potting compound is then uniformly output through the dispensing pump.

[0032] Furthermore, to facilitate the discharge of the adhesive, a discharging mechanism is also included, which includes a discharging pump 4 driven by a discharging pump motor 7 and a universal joint 6 for the discharging tube linked to the discharging port of the discharging pump. The discharging mechanism adopts an upward discharging structure, and the temperature of the discharged adhesive is relatively high, ensuring a smooth discharging process and guaranteeing the final potting effect.

[0033] To achieve overall control, the system also includes a high-level heat transfer oil tank 15 and a heat transfer oil exhaust port 9, which are connected to the side heat exchange jacket for displaying the heat transfer oil level, a colloidal temperature sensor 11 and a heat transfer oil temperature sensor 12, and a controller 13. The controller collects the sensor signals and controls the opening of the burner 1 through the control line 14 to achieve temperature control.

[0034] Specifically, the heat energy generated by combustion in the combustion chamber is transferred to the bottom heat exchange jacket 3 and the side heat exchange jacket through thermal radiation, hot air flow, and flue gas heat exchange. The heat transfer oil in the bottom heat exchange jacket 3 and the side heat exchange jacket is transferred by thermal radiation and hot air flow, absorbing energy. The temperature and pressure are uniform throughout the container system, and there is no diffusion phenomenon without external thermal power. If external heat is introduced into the system, creating a temperature difference, heat transfer will occur between different parts of the system. Local areas receiving heat energy transfer generate thermal potential energy, and parts with high potential energy move rapidly to parts with low potential energy. During this movement, the energy is absorbed by the potting compound, which is then cut, causing its high thermal potential energy to dissipate and transform into low potential energy. This low potential energy is then reheated by external thermal power, repeating the heating and cooling cycle continuously. This phenomenon continues to occur to achieve thermal equilibrium under the same conditions.

[0035] A grate-type heat-conducting oil heating circulation device is installed in the inner container of the sandwich-type oil-filling heating element, which is to say, a relatively close-spaced pipeline is installed. Based on the principle of natural movement of thermal potential energy, pipelines of different heights are connected to the inner container of the sandwich-type oil-filling heating element. After the solid potting compound is put in from the inlet, the compound block slides down due to the different heights at both ends. During the slide, it absorbs heat energy and melts. In order to quickly melt and heat up, the stirring paddle is made into an upward-pushing blade, which accelerates the heat exchange speed of the heat radiation surface. Then, the potting compound that has reached the specified temperature is output by the dispensing pump.

[0036] This system employs a grate-type heat transfer oil circulation heating double-layer heating device. Utilizing the isothermal uniformity and rapid heat transfer properties of the heat transfer oil, the uniform heat exchange area within the container is increased. The heat transfer fluid can be circulated using an external auxiliary pump or achieve rapid heat distribution through self-flow via thermal potential difference. The grate-type heat exchange layer is located in the upper middle layer of the container. When solid potting compound is placed into the container, it naturally settles and is then thermally cut into smaller pieces by the grate-type preheating section. The potting compound is heated simultaneously with this thermal cutting. The smaller pieces continue to be heated at the bottom layer and rapidly melt under stirring. Compared to previous methods, the heating time is reduced by nearly half, and energy consumption is reduced by one-quarter.

[0037] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A high-efficiency heat transfer oil circulating heating device, characterized in that, The device includes a cavity for melting adhesive blocks, a bottom heat exchange jacket at least at the bottom of the cavity and filled with heat-conducting oil, multiple heat exchange tubes spaced apart within the cavity, each heat exchange tube filled with heat-conducting oil communicating with the heat exchange jacket, and a portion of the heat exchange tubes forming a preheating section spaced from the bottom of the cavity. The preheating section is located in the middle or upper middle part of the cavity. The interior of the cavity forms a grate-like structure or a multi-toothed hot knife-like preheating section, which thermally cuts large adhesive blocks in the upper middle part to prevent them from sinking to the bottom. The sidewalls of the cavity are provided with... The bottom heat exchange jacket is connected to the side heat exchange jacket, and the two ends of the heat exchange tube are respectively connected to the side heat exchange jackets on both sides. A combustion chamber for directly heating the bottom heat exchange jacket is provided at the bottom of the cavity. An upward-pushing stirring blade is provided at the bottom of the cavity to drive the stirring of the fluid in the cavity. By means of gravity accumulation in the middle and the upward push of the stirring blade, a tumbling is formed in the middle, avoiding dead zones and improving overall efficiency. A spirally rising exhaust pipe is provided on the outside of the side heat exchange jacket, and the lower end of the exhaust pipe is connected to the combustion chamber.

2. The high-efficiency heat transfer oil circulating heating device as described in claim 1, characterized in that, The heat exchange tubes form a downward-sloping grate-shaped heat exchange surface with one side higher than the other, and the high end of the heat exchange tubes is located at the feed inlet of the cavity.

3. The high-efficiency heat transfer oil circulating heating device as described in claim 1, characterized in that, The heat exchange tube has a U-shaped structure with the opening facing downwards and both ends are connected to the bottom heat exchange jacket.

4. The high-efficiency heat transfer oil circulating heating device as described in claim 3, characterized in that, The middle section of the heat exchange tube forms a downward-sloping grate-shaped heat exchange surface with one side higher than the other, and the high end of the heat exchange tube is located at the feed inlet of the cavity.

5. The high-efficiency heat transfer oil circulating heating device as described in claim 1, characterized in that, The heat exchange tube is L-shaped, with one end connected to the bottom heat exchange jacket and the other end connected to the side heat exchange jacket.

6. The high-efficiency heat transfer oil circulating heating device as described in claim 1, characterized in that, It also includes a glue discharge mechanism, which includes a glue pump driven by a glue pump motor and a glue discharge tube universal joint linked to the glue discharge port of the glue pump.

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