CN110290609B - Internal heating device for low-vacuum tunnel model test - Google Patents
Internal heating device for low-vacuum tunnel model test Download PDFInfo
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- CN110290609B CN110290609B CN201910524570.3A CN201910524570A CN110290609B CN 110290609 B CN110290609 B CN 110290609B CN 201910524570 A CN201910524570 A CN 201910524570A CN 110290609 B CN110290609 B CN 110290609B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
Abstract
The invention discloses an internal heating device for a low vacuum tunnel model test, which comprises: the device comprises a vacuum pipeline, an infrared heating pipe, a temperature sensor, a bracket, a temperature controller, an electric power voltage regulator and a temperature collector; the bracket is a frame of an inscribed polygon of the vacuum pipeline, the plurality of infrared heating pipes are arranged on the bracket, and the plurality of infrared heating pipes are uniformly and circumferentially distributed relative to the axis of the vacuum pipeline; the temperature sensor is arranged on the bracket through a connecting rod and is contacted with the inner wall of the vacuum pipeline; the temperature sensor transmits the acquired actual temperature to the temperature controller, and the temperature controller adjusts the power voltage regulator according to the actual temperature and the set temperature so as to control the heating condition of the infrared heating pipe; the temperature collector monitors and collects the temperature in the vacuum pipeline in real time. The heating device effectively simulates the condition that the temperature in the tunnel rises due to high-speed running of the train, and provides a good test model.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to an internal heating device for a low-vacuum tunnel model test.
Background
The vacuum pipeline transportation system as a novel traffic system has the advantages of being fast, convenient, safe, environment-friendly, efficient and the like.
The highest speed of the high-speed vehicle running in the dense atmosphere on the ground is not more than 400km/h, and the vacuum pipeline transportation system can effectively make up the speed gap between high-speed rails and aviation. The method can be used as a fifth type of traffic and transportation mode, forms powerful complementation with the prior road transportation, railway transportation, water transportation and air transportation, and has wide application prospect and market value.
When the train runs in the low-vacuum tunnel, the severe friction between the residual air and the train inevitably causes the temperature of the environment in the tunnel to rise, and further influences the main structure of the vacuum tunnel. In the low vacuum tunnel model test, in order to study the influence of temperature rise on the low vacuum tunnel, the relatively high temperature environment inside the tunnel caused by high-speed running of the train needs to be simulated.
Therefore, how to design a device for a low vacuum tunnel model test to simulate the rise of the temperature inside the tunnel caused by the high-speed running of the train is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an internal heating device for a low-vacuum tunnel model test.
The application provides a low vacuum tunnel model test's inside heating device includes: the device comprises a vacuum pipeline, an infrared heating pipe, a temperature sensor, a bracket, a temperature controller, an electric power voltage regulator and a temperature collector;
the bracket is a frame of an inscribed polygon of the vacuum pipeline, the plurality of infrared heating pipes are arranged on the bracket, and the plurality of infrared heating pipes are uniformly distributed on the circumference of the vacuum pipeline relative to the axis of the vacuum pipeline; the temperature sensor is mounted on the bracket through a connecting rod and is in contact with the inner wall of the vacuum pipeline;
the temperature controller is respectively connected with the temperature sensor, the power voltage regulator and the temperature collector; the temperature sensor transmits the acquired actual temperature to the temperature controller, and the temperature controller adjusts the power voltage regulator according to the actual temperature and the set temperature so as to control the heating condition of the infrared heating pipe; and the temperature collector is used for monitoring and collecting the temperature in the vacuum pipeline in real time.
Optionally, the support includes a plurality of support structural members arranged in parallel, the support structural members are an inscribed polygon of the cross section of the vacuum pipe, two ends of each side of the polygon are respectively provided with a support leg, and the support legs are supported on the inner wall of the vacuum pipe; and a heating pipe support is arranged at the middle point of each edge of the polygon, and the infrared heating pipe is arranged on the heating pipe support.
Optionally, the heating tube supports face towards the inner side of the polygon, and the infrared heating tube is mounted on the inner side of the bracket.
Optionally, the heating pipe supports face the outer side of the polygon, and the infrared heating pipe is mounted on the outer side of the bracket.
Optionally, a connecting rod is arranged between the support structural members, and the connecting rod is mounted on the connecting rod; and a rubber pad is arranged between the vertex of the inner angle of the polygon and the inner wall of the vacuum pipeline.
Optionally, the bracket structural members are triangular, and three infrared heating pipes and three connecting rods are arranged between adjacent bracket structural members.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the heating device adopts the infrared heating pipe to realize the simulation of a higher high-temperature environment in the low-vacuum tunnel model, and the heating efficiency is high. The bracket is convenient for installing the infrared heating pipe and the temperature sensor, can adapt to the placement of a circular space in the pipe and the flat placement outside, and can adjust the position of the lamp tube to change the heating effect; the temperature acquisition device realizes real-time monitoring and acquisition of the temperature inside the simulated tunnel. The heating device effectively simulates the condition that the temperature in the tunnel rises due to high-speed running of the train, and provides a good test model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of an embodiment of an internal heating device for a low vacuum tunnel model test according to the present invention;
FIG. 2 is a schematic view of the internal heating apparatus shown in FIG. 1;
FIG. 3 is a schematic view of an installation of an infrared heating tube in the internal heating apparatus shown in FIG. 1;
FIG. 4 is a schematic view of another installation of the infrared heating tube in the internal heating apparatus shown in FIG. 1;
wherein the correspondence between the description of the drawings and the names of the components in fig. 1 to 4 is as follows:
a vacuum pipe 1; an infrared heating pipe 2;
a temperature sensor 3; a bracket 4;
a bracket structural member 41; a heating pipe support 42;
a rubber pad 45; a temperature controller 5;
a power voltage regulator 6; a temperature collector 7;
a port converter 71; acquisition software 72.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram illustrating an embodiment of an internal heating device for a low vacuum tunnel model test according to the present invention; FIG. 2 is a schematic view of the internal heating apparatus shown in FIG. 1; FIG. 3 is a schematic view of an installation of an infrared heating tube in the internal heating apparatus shown in FIG. 1; fig. 4 is a schematic structural view illustrating another installation manner of the infrared heating pipe in the internal heating apparatus shown in fig. 1.
In a specific embodiment, the present invention provides an internal heating apparatus for a low vacuum tunnel model test, comprising: the device comprises a vacuum pipeline 1, an infrared heating pipe 2, a temperature sensor 3, a bracket 4, a temperature controller 5, an electric power voltage regulator 6 and a temperature collector 7;
the support 4 is a frame of an inscribed polygon of the vacuum pipeline 1, the plurality of infrared heating pipes 2 are arranged on the support 4, and the plurality of infrared heating pipes 2 are uniformly distributed circumferentially relative to the axis of the vacuum pipeline 1; the temperature sensor 3 is mounted on the bracket 4 through a connecting rod 43, and the temperature sensor 3 is in contact with the inner wall of the vacuum pipe 1;
the temperature controller 5 is respectively connected with the temperature sensor 3, the power voltage regulator 6 and the temperature collector 7; the temperature sensor 3 transmits the acquired actual temperature to the temperature controller 5, and the temperature controller 5 adjusts the power voltage regulator 6 according to the actual temperature and the set temperature so as to control the heating condition of the infrared heating pipe 2; and the temperature collector 7 monitors and collects the temperature in the vacuum pipeline 1 in real time.
In the device, a low-vacuum tunnel is simulated by a vacuum pipeline 1 to form a low-vacuum tunnel model, an infrared heating pipe 2 and a temperature sensor 3 are both arranged on a bracket 4, and the bracket 4 is placed in the vacuum pipeline 1; the infrared heating pipes 2 are uniformly and circumferentially distributed around the axis of the vacuum pipeline 1, and the condition that the temperature in the tunnel is increased due to high-speed running of a train is simulated; the temperature sensor 3 is fixed on the bracket 4 through a connecting rod 43 and is tightly attached to the inner wall of the vacuum pipeline 1 so as to monitor the temperature of the inner wall of the vacuum pipeline 1. Please refer to fig. 2 for the specific structure.
The temperature controller 5 is connected with the temperature sensor 3, the power voltage regulator 6 and the temperature collector 7. The temperature collector 7 includes a port converter 71 and collection software 72, and can store the temperature monitoring data output by the temperature controller 5. The infrared heating pipe 2 is connected with the power voltage regulator 6. Please refer to fig. 1 for a specific working schematic diagram.
During operation, the temperature value that needs to reach inside the tunnel model is set through temperature controller 5, and temperature controller 5 compares the actual temperature of setting temperature and temperature sensor 3 feedback, adjusts the output voltage of electric power voltage regulator 6 to the output of adjustment infrared heating pipe 2 makes the inside temperature of tunnel model reach the predetermined value.
The heating device adopts the infrared heating pipe 2 to realize the simulation of the high-temperature environment in the low-vacuum tunnel model, and the heating efficiency is high. The bracket 4 is convenient for installing the infrared heating pipe 1 and the temperature sensor 3, can adapt to the placement of a circular space in the pipe and the flat placement outside, and can adjust the position of the infrared heating pipe 2 to change the heating effect; the real-time monitoring and acquisition of the temperature inside the simulated tunnel are realized through the temperature acquisition device 7.
The heating device effectively simulates the condition that the temperature in the tunnel rises due to high-speed running of the train, and provides a good test model.
In a preferred embodiment, the bracket 4 comprises a plurality of bracket structural members 41 arranged side by side, the bracket structural members 41 are inscribed polygons of the cross section of the vacuum pipeline 1, two ends of each side of the polygons are respectively provided with a support foot 44, and the support feet 44 are supported on the inner wall of the vacuum pipeline 1; a heating pipe support 42 is arranged at the middle point of each side of the polygon, and the infrared heating pipe 2 is installed on the heating pipe support 42.
The heating pipe support 42 may not be disposed at the midpoint of each side of the polygon, but may be disposed at the same distance from the end point of the same side, and the infrared heating pipes 2 are also uniformly circumferentially distributed with respect to the axis of the vacuum pipe 1, and the diameter of the circumference of the infrared heating pipes 2 can be changed by adjusting the positions of the heating pipe support 42 on the polygon side, so as to adjust the heating effect of the infrared heating pipes 2. The position of the infrared heating tube 2 can also be adjusted in the following manner.
In a first specific embodiment, as shown in fig. 3, the tube holders 42 are all facing the inside of the polygon, and the infrared heating tube 2 is mounted on the outside of the holder 4.
In a second specific embodiment, as shown in fig. 4, the heating tube holders 42 are all facing the outside of the polygon, and the infrared heating tube 2 is mounted on the outside of the holder.
In each of the above specific embodiments, a connecting rod is provided between the support structure members 41, and the connecting rod 43 is mounted on the connecting rod; and a rubber pad 45 is arranged between the vertex of the inner angle of the polygon and the inner wall of the vacuum pipeline 1.
In a specific embodiment, as shown in fig. 2, the support structure members 41 are triangular, and three infrared heating pipes 2 and three connecting rods are disposed between adjacent support structure members 41.
In a specific embodiment, as shown in fig. 1 to 4, the internal heating device of the low vacuum tunnel model test includes a vacuum pipe 1, an infrared heating pipe 2, a temperature sensor 3, a bracket 4, a temperature controller 5, an electric power voltage regulator 6, and a temperature collector 7.
The support 4 is composed of a support structure 41, a heating pipe support 42, a connecting rod 43, a support leg 44 and a rubber mat 45, and the temperature collector 7 is composed of a port converter 71 and collection software 72.
The infrared heating pipe 2 and the temperature sensor 3 are both arranged on a support 4, and the support 4 is placed inside the vacuum pipeline 1; the heating pipes 2 are fixed on the bracket 4 through the heating pipe support 42 and are uniformly and circumferentially distributed around the axis of the vacuum pipeline 1; the temperature sensor 3 is fixed on the bracket 4 through an adjustable connecting rod 43 and is tightly attached to the inner wall of the vacuum pipeline 1 so as to monitor the temperature change of the inner wall of the vacuum pipeline 1; the temperature controller 5 is connected with the temperature sensor 3, the power voltage regulator 6 and the temperature collector 7.
The temperature collector 7 includes a port converter 71 and collection software 72, and can store the temperature monitoring data output by the temperature controller 5. The infrared heating pipe 2 is connected with the power voltage regulator 6. In the non-operating state, the support 4 is placed on the ground through the support legs 44 to facilitate the installation of the heating tube 2 and the temperature sensor 3. After the assembly is finished, the support 4 is placed on the inner side surface of the pipe wall of the tunnel model 1 through the rubber pad 45.
Fig. 3 and 4 show two mounting ways of the infrared heating tube 2. In fig. 3, the heating pipe 2 is arranged inside the bracket 4; in fig. 4 the heating tube 2 is mounted outside the holder 4. By the method, the distance between the infrared heating pipe 2 and the inner wall of the tunnel model can be adjusted, so that the heating effect is changed.
The working principle of the heating device is shown in fig. 1, when the heating device works, a temperature value which needs to be reached inside the tunnel model 1 is set through the temperature controller 5, the temperature controller 5 compares the set temperature and the actual temperature fed back by the temperature sensor 3, and the output voltage of the power voltage regulator 6 is adjusted, so that the output power of the infrared heating pipe 2 is adjusted, and the temperature inside the tunnel model reaches a preset value.
The port converter 71 of the temperature collector 7 converts the port data of the temperature controller 5 into ethernet port data, and then collects and stores the temperature data by the collection software 72 on the computer.
The internal heating device for the low vacuum tunnel model test provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (4)
1. An internal heating device for a low vacuum tunnel model test, comprising: the device comprises a vacuum pipeline, an infrared heating pipe, a temperature sensor, a bracket, a temperature controller, an electric power voltage regulator and a temperature collector;
the bracket is a frame of an inscribed polygon of the vacuum pipeline, the plurality of infrared heating pipes are arranged on the bracket, and the plurality of infrared heating pipes are uniformly distributed on the circumference of the vacuum pipeline relative to the axis of the vacuum pipeline; the temperature sensor is mounted on the bracket through a connecting rod and is in contact with the inner wall of the vacuum pipeline;
the temperature controller is respectively connected with the temperature sensor, the power voltage regulator and the temperature collector; the temperature sensor transmits the acquired actual temperature to the temperature controller, and the temperature controller adjusts the power voltage regulator according to the actual temperature and the set temperature so as to control the heating condition of the infrared heating pipe; the temperature collector monitors and collects the internal temperature of the vacuum pipeline in real time;
the support comprises a plurality of support structural parts which are arranged in parallel, the support structural parts are inscribed polygons of the cross sections of the vacuum pipelines, two ends of each side of each polygon are respectively provided with a support leg, and the support legs are supported on the inner walls of the vacuum pipelines; a heating pipe support is arranged at the middle point of each side of the polygon, and the infrared heating pipe is installed on the heating pipe support;
a connecting rod is arranged between the support structural parts and is arranged on the connecting rod; and a rubber pad is arranged between the vertex of the inner angle of the polygon and the inner wall of the vacuum pipeline.
2. The internal heating apparatus for low vacuum tunnel model test as claimed in claim 1, wherein the heating pipe holders are all facing to the inner side of the polygon, and the infrared heating pipe is installed at the outer inner side of the bracket.
3. The internal heating apparatus for low vacuum tunnel model test as claimed in claim 1, wherein the heating pipe holders are all directed to the outside of the polygon, and the infrared heating pipe is installed at the outside of the bracket.
4. The internal heating apparatus for a low vacuum tunnel model test according to claim 1, wherein the support structure members are triangular, and three infrared heating pipes and three connecting rods are disposed between adjacent support structure members.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910524570.3A CN110290609B (en) | 2019-06-18 | 2019-06-18 | Internal heating device for low-vacuum tunnel model test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910524570.3A CN110290609B (en) | 2019-06-18 | 2019-06-18 | Internal heating device for low-vacuum tunnel model test |
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| CN110290609A CN110290609A (en) | 2019-09-27 |
| CN110290609B true CN110290609B (en) | 2021-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112033708B (en) * | 2020-09-11 | 2021-06-04 | 中南大学 | Dynamic model experiment system and method for high-speed train passing through local heating tunnel |
| CN113281378B (en) * | 2021-05-25 | 2023-03-24 | 华中科技大学 | Decoupling research device for end heat transfer of metallized film capacitor |
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| JPH07286936A (en) * | 1994-04-19 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | Airflow heater for wind tunnel |
| JPH08304225A (en) * | 1995-04-28 | 1996-11-22 | Nippon Kagaku Kogyo Kk | Temperature regulator for thermal stratification wind tunnel facility |
| CN2609402Y (en) * | 2003-04-30 | 2004-04-07 | 黄德超 | Heating core of hair drier |
| CN203352827U (en) * | 2013-06-26 | 2013-12-18 | 重庆五环试验仪器有限公司 | Special heater for test boxes |
| CN204877506U (en) * | 2015-08-31 | 2015-12-16 | 长安大学 | Indoor test device in han qu tunnel |
| CN105789084A (en) * | 2014-12-17 | 2016-07-20 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Heating chamber and semiconductor processing equipment |
| CN206161574U (en) * | 2016-11-21 | 2017-05-10 | 西南交通大学 | Test device of high ground temperature tunnel country rock and distinguished and admirable heat transfer |
| CN206740406U (en) * | 2016-10-28 | 2017-12-12 | 石家庄铁道大学 | Temperature and the system of wind velocity variation law in a kind of simulation monitoring tunnel in cold area |
| CN109511179A (en) * | 2018-12-05 | 2019-03-22 | 太原航空仪表有限公司 | A kind of self-insulating air pipe line heating device of low flow resistance |
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2019
- 2019-06-18 CN CN201910524570.3A patent/CN110290609B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07286936A (en) * | 1994-04-19 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | Airflow heater for wind tunnel |
| JPH08304225A (en) * | 1995-04-28 | 1996-11-22 | Nippon Kagaku Kogyo Kk | Temperature regulator for thermal stratification wind tunnel facility |
| CN2609402Y (en) * | 2003-04-30 | 2004-04-07 | 黄德超 | Heating core of hair drier |
| CN203352827U (en) * | 2013-06-26 | 2013-12-18 | 重庆五环试验仪器有限公司 | Special heater for test boxes |
| CN105789084A (en) * | 2014-12-17 | 2016-07-20 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Heating chamber and semiconductor processing equipment |
| CN204877506U (en) * | 2015-08-31 | 2015-12-16 | 长安大学 | Indoor test device in han qu tunnel |
| CN206740406U (en) * | 2016-10-28 | 2017-12-12 | 石家庄铁道大学 | Temperature and the system of wind velocity variation law in a kind of simulation monitoring tunnel in cold area |
| CN206161574U (en) * | 2016-11-21 | 2017-05-10 | 西南交通大学 | Test device of high ground temperature tunnel country rock and distinguished and admirable heat transfer |
| CN109511179A (en) * | 2018-12-05 | 2019-03-22 | 太原航空仪表有限公司 | A kind of self-insulating air pipe line heating device of low flow resistance |
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| CN110290609A (en) | 2019-09-27 |
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