阅读说明：本技术 加热设备 (Heating device ) 是由 刘海波 代光辉 李伟 胡友臣 代坤 于 2019-03-26 设计创作，主要内容包括：本发明提供了一种加热设备,所述加热设备包括热源以及用于支撑所述热源的支撑部件,所述加热设备还包括用于冷却所述支撑部件的冷却系统。本发明所提供的加热设备能够在管道内部进行加热。(The present invention provides a heating apparatus including a heat source and a support member for supporting the heat source, and further including a cooling system for cooling the support member. The heating equipment provided by the invention can heat the inside of the pipeline.)

1. A heating apparatus, characterized in that the heating apparatus comprises a heat source and a support member for supporting the heat source, characterized in that the heating apparatus further comprises a cooling system for cooling the support member.

2. The heating apparatus of claim 1, wherein the support member extends from a proximal end to a distal end, the heat source being secured to the distal end of the support member, the cooling system being configured to cool the distal end of the support member.

3. The heating apparatus as claimed in claim 2, wherein the heat source comprises a silicon carbon rod holder and a plurality of silicon carbon rods arranged in a ring shape, the silicon carbon rods being mounted on the silicon carbon rod holder, the silicon carbon rod holder being mounted on a distal end of the support member.

4. The heating apparatus according to claim 1, wherein the cooling system includes a cooling liquid, the support member has a circulation space for circulating the cooling liquid, and the cooling liquid is configured to circulate in the circulation space inside the support member to cool the support member.

5. The heating apparatus according to claim 4, wherein the flow path of the cooling liquid covers a portion of the wall of the support member corresponding to the heating portion of the heat source.

6. The heating apparatus according to claim 4, wherein the flow-through space of the distal end of the support member is partitioned into a first flow-through passage and a second flow-through passage, a downstream of the first flow-through passage communicates with an upstream of the second flow-through passage, and the first flow-through passage and the second flow-through passage coincide in an axial direction of the support member.

7. The heating apparatus of claim 4, wherein the support system further comprises a support assist member for providing an assist support force to the support member, the support assist member extending from a proximal end to a distal end, the cooling system being configured to also cool the assist member.

8. The heating apparatus as claimed in claim 7, wherein a distal end of the auxiliary member is connected to the supporting member or the heat source, and the auxiliary supporting force is a pulling force or a supporting force for opposing gravity.

9. The heating apparatus according to claim 7, wherein the support auxiliary member has a circulation space for circulating the cooling liquid, the cooling liquid being configured to circulate in the circulation space within the support auxiliary member to cool the support auxiliary member.

10. The heating apparatus according to claim 9, wherein a circulation space in the support member and a circulation space in the support auxiliary member communicate, so that the cooling liquid circulates between the support member and the support auxiliary member.

Technical Field

The invention relates to a heating device, in particular for heating the interior of a pipeline.

Background

At present, the conventional metal pipe coating, heating and curing process uses a box type curing oven (resistance type, gas type) for heating. And (3) placing the coated metal pipeline on a flat car matched with the box type curing furnace to push the metal pipeline into the furnace, closing a furnace door, and then heating to the temperature required by the process for heat preservation. The heat energy generated by the current flowing through the resistor or the heat energy generated by the combustion of the fuel gas is transferred to the metal pipe body through the air heating in the closed furnace. However, the air has poor heat energy transfer efficiency, and the air heat conduction index is only about 0.3. It is thus possible to obtain a metal pipe whose efficiency does not exceed 30% even when the entire volume of the metal pipe is close to the volume of the box-type curing furnace (the efficiency of air heat transfer is low). Because the size of the metal pipes is large or small, the volume of the curing oven can only be increased to accommodate all the metal pipes with different sizes. When the whole volume of the metal pipeline is smaller than the volume of the box-type curing furnace, the air heat transfer efficiency is poorer, and the energy consumption is higher.

After the conventional metal pipeline coating, heating and curing process is completed, a furnace door must be opened to take the pipeline with the cured coating. Because the oven door is opened, the hot air inside the curing oven and the cold air outside the curing oven are alternated, and the heat loss is large. When the continuous operation is carried out, the next furnace is heated again to the set temperature, and the pipeline can be subjected to the curing process. Moreover, the temperature in the curing oven cannot be accurately controlled by opening the curing oven back and forth. This not only consumes more energy, but also takes longer, typically 40-60 minutes or longer, which affects the efficiency of production.

In view of the shortcomings of the box curing oven heating methods, those skilled in the art have developed some more convenient heating devices. For example, chinese patent application No. 201521045429.9 discloses a plastic-coated pipe intermediate frequency heating apparatus, wherein a pipe is fixed to a frame and rotated so that an intermediate frequency heater moves along the axis of the pipe to heat the pipe. Although this heating method is more convenient than the box type curing oven, there still exist many problems such as inconvenient pipe replacement, low production efficiency, etc.

In addition, in the application of coating and heating to a large-diameter metal pipe, it is preferable to heat the inside of the pipe. At present, no equipment suitable for heating the interior of the pipeline exists. Therefore, it is necessary to develop a device suitable for heating the inside of the pipe.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a new heating device, the technical problem to be solved being suitable for heating inside a pipe.

In order to solve the problems, the invention adopts the technical scheme that: a heating apparatus comprising a heat source and a support member for supporting the heat source, characterized in that the heating apparatus further comprises a cooling system for cooling the support member.

Preferably, the support member extends from a proximal end to a distal end, the heat source being secured to the distal end of the support member, the cooling system being configured to cool the distal end of the support member.

Preferably, the heat source comprises a silicon-carbon rod support and a plurality of annularly arranged silicon-carbon rods, the silicon-carbon rods are mounted on the silicon-carbon rod support, and the silicon-carbon rod support is mounted at the far end of the support member.

Preferably, the cooling system includes a cooling liquid, the support member has a circulation space for circulating the cooling liquid, and the cooling liquid is configured to circulate in the circulation space in the support member to cool the support member.

Preferably, the flow path of the cooling liquid covers a portion of the wall of the support member corresponding to the heating portion of the heat source.

Preferably, the flow-through space of the distal end of the support member is partitioned into a first flow-through passage and a second flow-through passage, a downstream of the first flow-through passage communicates with an upstream of the second flow-through passage, and the first flow-through passage and the second flow-through passage coincide in the axial direction of the support member.

Preferably, the support system further comprises a support auxiliary member for providing an auxiliary supporting force to the support member, the support auxiliary member extending from a proximal end to a distal end, the cooling system being configured to also cool the auxiliary member.

Preferably, a distal end of the auxiliary member is connected to the support member or the heat source, and the auxiliary support force is a pulling force or a supporting force for opposing gravity.

Preferably, the support auxiliary member has a circulation space for circulating the cooling liquid, and the cooling liquid is configured to circulate in the circulation space in the support auxiliary member to cool the support auxiliary member.

Preferably, the circulation space in the support member and the circulation space in the support auxiliary member communicate so that the coolant circulates between the support member and the support auxiliary member.

The invention has the beneficial effects that: the heating equipment provided by the invention utilizes the silicon carbide rod as a heat source, and can be conveniently heated to a desired temperature; in consideration of cost, the heating device of the invention can adopt low-cost common steel pipes as the supports of the heat source, and the mechanical property of the steel pipes is reduced due to the over-high temperature placed by the cooling system, thereby realizing the internal heating production of the pipeline in a low-cost manner.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic diagram of a first preferred embodiment of the heating device provided by the present invention.

Fig. 2 is an exploded view of the heat source and the distal end of the support member of the heating apparatus shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of a heat source and a distal end of a support member of the heating apparatus shown in fig. 1.

Fig. 4 is a schematic sectional structural view of a second preferred embodiment of the heating apparatus provided by the present invention.

Detailed Description

Fig. 1 to 3 show a first preferred embodiment of the heating device provided by the present invention.

As shown in fig. 1, the heating apparatus in this embodiment comprises a heat source 100, a support member 200, and a cooling system (not shown), wherein the support member 200 is made of steel material, is elongated in whole, extends from a proximal end to a distal end, and has a length of 3 meters, or even 5 meters, or more than 10 meters (the dashed line indicates that the support member 200 is elongated). The heat source 100 is mounted to the distal end of the support member 200, while the proximal end of the support member 200 may be fixedly mounted to a fixed base or support, or the proximal end of the support member 200 may be mounted to a movable device. In addition, the support member 200 is a hollow tube having a liquid inlet 301 and a liquid outlet 302, and the cooling system includes a cooling liquid, which enters the support member 200 through the liquid inlet 301, circulates in the support member 200 to cool the support member, and then flows out through the liquid outlet 301. The cooling system further comprises necessary pipes (e.g. metal hoses connected to the inlet 301 and the outlet 301), pumps, cooling fluid supply means, flow regulating means, etc., which are well known in the art and will not be described in detail herein. The cooling liquid is common cooling water.

As shown in fig. 2, the heat source 100 includes a plurality of silicon carbide rods 110 and a silicon carbide rod supporter 120. The sic rod supporter 120 is ring-shaped, a plurality of the sic rods 110 are mounted on the sic rod supporter 120 in a ring-shaped arrangement, and then the sic rod supporter 120 is mounted on the distal end of the support member 200. In addition, the heat source 100 further includes a power supply system (not shown) electrically connected to the sic rod 110, which is well known in the art and will not be described in detail herein.

In order to allow the coolant to better circulate at the distal end of the support member 200, a necessary structure may be provided. As shown in fig. 3, at the distal end of the support member 200, the flow path of the coolant has a position a and a position B, wherein the flow path between the position a and the position B covers a portion of the wall of the support member 200 corresponding to the heating portion of the silicon carbide rod 110. In this embodiment, the structure for achieving this object is: the internal space of the distal end of the support member 200 is divided into two coolant flow channels, a first flow channel 303 and a second flow channel 304, respectively, and the downstream side of the first flow channel 303 communicates with the upstream side of the second flow channel 304, but the first flow channel 303 and the second flow channel 304 overlap in the axial direction of the support member 200.

The heating device provided by the embodiment can be used for conveniently heating the inside of the pipeline. The whole far end of the heating equipment is manufactured into a long shape, the length of the heating equipment can reach 3 meters, even 5 meters or more than 10 meters, the outer diameter of the heating equipment can be within 20cm, even 10cm, and therefore the heating equipment can extend into the pipeline to heat. During heating, the heating equipment can be fixed and the pipeline can be moved to complete the heating of the whole pipeline; the heating device can also be moved while the pipeline is fixed, so that the heating of the whole pipeline can be completed. Because the supporting component is supported by cheap common steel, when the heating temperature reaches about 800 ℃ or even 1000 ℃, the mechanical property of the steel is greatly reduced, and the cooling system can effectively solve the problem, so that the supporting component can keep enough mechanical property.

Those skilled in the art can appropriately modify the above-described embodiments. For example, the support member need not be round tubular, but square tubular or other tubular shapes are also suitable for this embodiment. For the purpose of achieving good cooling, the distal end of the support member may also adopt other structures, for example, two steel pipes may be directly used as the support member, the distal ends of the two steel pipes are communicated, one steel pipe is fed with water, and the other steel pipe is fed with water.

Fig. 4 shows a second preferred embodiment of the heating device provided by the present invention.

As shown in fig. 4, the heating apparatus of this embodiment also includes a heat source, a support member 200, and a cooling system (not shown) as in the first embodiment, wherein the support member 200 is made of steel material, is elongated in its entirety, and extends from a proximal end to a distal end. The heat source also includes a plurality of annularly arranged carbon silicon rods 110, also mounted on the distal end of the support member 200 by the carbon silicon rods.

In addition, the distal end structure of the support member 200 is also the same as that of the first embodiment. The flow path of the cooling liquid covers a portion of the wall of the support member 200 corresponding to the heating portion of the silicon carbide rod 110. The internal space of the distal end of the support member 200 is divided into two coolant flow channels, a first flow channel and a second flow channel, respectively, and the downstream of the first flow channel communicates with the upstream of the second flow channel, but the first flow channel and the second flow channel overlap in the axial direction of the support member 200.

Unlike the first embodiment, the heating apparatus of this embodiment further includes a support auxiliary member 400, and the support auxiliary member 400 functions to provide an auxiliary supporting force to the support member 200 to provide a sufficient supporting force for the heat source and the distal end of the support member 200 against the gravity. In this embodiment, the support auxiliary member 400 is located above the support member 200, and the auxiliary support force provided is a tensile force. As a variation of this embodiment, the support auxiliary member 400 may be positioned below the support member 200, so that the support assisting force is a supporting force.

As shown in fig. 4, the support auxiliary member 400 is made of steel material, is generally elongated, extends from the proximal end to the distal end, and can have a length of 3 meters, or even 5 meters or more than 10 meters. The distal end of the auxiliary support member 400 is connected to the support member 200, and the proximal end of the auxiliary support member 400, together with the proximal end of the support member 200, may be fixedly mounted on a fixed base or a bracket, or may be mounted on a movable device. In order to fit the support auxiliary member 400 and the support member 200 together into the interior of the pipe to be heated, the angle between the axes of the support auxiliary member 400 and the support member 200 should not be excessively large, and the entire outer diameters of the support auxiliary member 400 and the support member 200 at the proximal ends of the support auxiliary member 400 and the support member 200 should be controlled to a size suitable for the insertion into the interior of the pipe, for example, not more than 60cm, or less.

In addition, the support auxiliary member 400 has a hollow tubular shape, and the distal end thereof communicates with the distal end of the support member 200. The cooling liquid enters from the liquid inlet 301 of the support member 200, then enters the support auxiliary member 400 through the liquid outlet 302 of the support member 200, and finally exits through the outlet of the support auxiliary member 400. Thus, the coolant cools the support member 200 and also cools the support auxiliary member 400.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.