CN203148872U - Forced-convection heat transfer experimental apparatus outside tube - Google Patents
Forced-convection heat transfer experimental apparatus outside tube Download PDFInfo
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- CN203148872U CN203148872U CN 201320188149 CN201320188149U CN203148872U CN 203148872 U CN203148872 U CN 203148872U CN 201320188149 CN201320188149 CN 201320188149 CN 201320188149 U CN201320188149 U CN 201320188149U CN 203148872 U CN203148872 U CN 203148872U
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Abstract
The utility model discloses a forced-convection heat transfer experimental apparatus outside a tube. The forced-convection heat transfer experimental apparatus outside the tube comprises a ventilating tube, a first test tube, an experimental tube, a second test tube, a shrinkage tube, a speed measuring tube, an expansion tube and a centrifugal induced draught fan, wherein the ventilating tube is provided with a horn-shaped inlet; the first test tube is connected with the ventilating tube; the experimental tube is connected with the first test tube; the second test tube is connected with the experimental tube; the shrinkage tube is connected with the second test tube; the speed measuring tube is connected with the shrinkage tube; the expansion tube is connected with the speed measuring tube; the centrifugal induced draught fan is connected with the expansion tube; a lattice structure is arranged in the ventilating tube; a steady-flow filter screen is arranged between the ventilating tube and the first test tube; an inlet temperature measuring meter is arranged in the first test tube; a heating tube is arranged on the experimental tube; an outlet temperature measuring meter is arranged on the second test tube; an air taking tube is arranged in the speed measuring tube; and the air taking tube is connected with an external micro pressure meter. The forced-convection heat transfer experimental apparatus outside the tube is simple in structure, low in manufacturing and maintaining costs, good in experimental airflow stability, good in turbulence level, capable of effectively improving the test precision, and convenient for well understanding experimental principles.
Description
Technical field
The utility model belongs to the outer convection heat transfer experiment of pipe field, is specifically related to the outer forced-convection heat transfer experimental provision of a kind of pipe.
Background technology
The outer convection heat transfer experimental provision of the pipe of prior art comes with some shortcomings, bigger as functional limitation, generally can only finish 1 to 2 experimental duties, and the experiment airflow stability is relatively poor, turbulivity is also bigger, its floor area is also bigger simultaneously, structure is also complicated, is inconvenient to keep in repair and management, and practicality is relatively poor.。
Summary of the invention
The purpose of this utility model provides provides a kind of simple in structure, the outer forced-convection heat transfer experimental provision of the pipe that the experiment airflow stability is good and turbulivity is good.
The technical scheme that realizes the utility model purpose is: the outer forced-convection heat transfer experimental provision of a kind of pipe, comprise the ventilation duct that has horn-like import, first testing tube that is connected with described ventilation duct output terminal, the experiment tube that is connected with the described first testing tube output terminal, second testing tube that is connected with described experiment tube output terminal, the collapsible tube that the described second testing tube output terminal is connected, the pitot tube that is connected with described collapsible tube output terminal, the convergent divergent channel that is connected with described pitot tube output terminal, the centrifugal type draught fan that is connected with described convergent divergent channel output terminal, in ventilation duct, be provided with lattice structure, between described ventilation duct and described first testing tube, be provided with the current stabilization filter screen, in described first testing tube, be provided with the inlet temperature meter, be provided with heat-generating pipe at described experiment tube, be provided with the outlet temperature meter at described second testing tube, be provided with in described pitot tube and get airduct, the described airduct of getting is connected with outside microbarograph.
Also comprise the heat-generating pipe accessory drive, with the control computer that described heat-generating pipe accessory drive is connected, described heat-generating pipe accessory drive is connected with described heat-generating pipe.
Be provided with air quantity in the lower end of described centrifugal type draught fan and regulate flashboard.
The inclination microbarograph is counted in described minute-pressure.
Its principle of work is summarized as follows: under the driving of centrifugal induced draught fan, the experiment air-flow is entered by horn-like import, the experiment air-flow passes through ventilation duct successively, first testing tube, experiment tube, second testing tube, collapsible tube, degree of testing the speed and convergent divergent channel, adopt horn-like import setting, the experiment air-flow can be entered smoothly, vapour lock and air-flow turbulivity have been reduced to a certain extent, in ventilation duct, be provided with grid through structure, the experiment air-flow can be broken up, to reduce the turbulivity of incoming flow, next step evenly provides the basis for the experiment air-flow, pass through the current stabilization filter screen again, because the current stabilization filter screen is the sieve aperture shape structure of rule, its aperture is little more a lot of than grid diameter, can further break up air-flow, turbulent flow in the broken air-flow, make experiment air-flow homogenising, in first testing tube, be placed with the inlet temperature meter, can measure the temperature that the preceding experiment of heat exchanging air-flow takes place, be provided with heat-generating pipe at experiment tube, make experiment air-flow and heat-generating pipe carry out convection heat transfer, the experiment gas flow temperature raises after the heat exchange, and enter in second testing tube, detect temperature this moment by the outlet temperature meter, test air-flow then and enter collapsible tube, make the experiment air-flow realize the step-down acceleration, and enter in the pitot tube, by getting the flow velocity that airduct and microbarograph detect its experiment air-flow, enter in the convergent divergent channel then, realize experiment air-flow supercharging deceleration, since the outlet of convergent divergent channel be connected with centrifugal type draught fan, air-flow enters atmosphere by behind the induced draft fan through air quantity adjusting flashboard; The inclination microbarograph with get airduct and be connected, its effect is to show velocity amplitude that pitot tube is surveyed; The heat-generating pipe accessory drive is connected with heat pipe, realizes the measurement of heat pipe temperature value, the functions such as control of heat pipe heating power by the thermopair that is arranged in the heat pipe surface; The control computer is connected with the heat-generating pipe accessory drive, and computing machine is used for collection of experiment data and processing.
The utlity model has positive effect: of the present utility model simple in structure, the making maintenance cost is low, realizes the dismounting and integration assembling of each parts easily, and its experiment airflow stability is good and turbulivity is also better, effectively raise the precision of test, conveniently better understand experimental principle.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below, wherein:
Fig. 1 is structural representation of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is structural representation of the present utility model.
See Fig. 1, the outer forced-convection heat transfer experimental provision of a kind of pipe, comprise the ventilation duct 2 that has horn-like import 1, first testing tube 3 that is connected with described ventilation duct 2 output terminals, the experiment tube 4 that is connected with described first testing tube, 3 output terminals, second testing tube 5 that is connected with described experiment tube 4 output terminals, the collapsible tube 6 that described second testing tube, 5 output terminals are connected, the pitot tube 7 that is connected with described collapsible tube 6 output terminals, the convergent divergent channel 8 that is connected with described pitot tube 7 output terminals, the centrifugal type draught fan 9 that is connected with described convergent divergent channel 8 output terminals, in ventilation duct 2, be provided with lattice structure 10, between described ventilation duct 2 and described first testing tube 3, be provided with current stabilization filter screen 11, in described first testing tube 3, be provided with inlet temperature meter 12, be provided with heat-generating pipe 13 at described experiment tube 4, be provided with outlet temperature meter 14 at described second testing tube 5, be provided with in described pitot tube 7 and get airduct 15, the described airduct 15 of getting is connected with outside microbarograph 16.
Also comprise heat-generating pipe accessory drive 17, with the control computer 18 that described heat-generating pipe accessory drive 17 is connected, described heat-generating pipe accessory drive 17 is connected with described heat-generating pipe 13.
Be provided with air quantity in the lower end of described centrifugal type draught fan 9 and regulate flashboard 19.
Described microbarograph 16 is the inclination microbarograph.
Its principle of work is summarized as follows: under the driving of centrifugal induced draught fan, the experiment air-flow is entered by horn-like import, the experiment air-flow passes through ventilation duct successively, first testing tube, experiment tube, second testing tube, collapsible tube, degree of testing the speed and convergent divergent channel, adopt horn-like import setting, the experiment air-flow can be entered smoothly, vapour lock and air-flow turbulivity have been reduced to a certain extent, in ventilation duct, be provided with grid through structure, the experiment air-flow can be broken up, to reduce the turbulivity of incoming flow, next step evenly provides the basis for the experiment air-flow, pass through the current stabilization filter screen again, because the current stabilization filter screen is the sieve aperture shape structure of rule, its aperture is little more a lot of than grid diameter, can further break up air-flow, turbulent flow in the broken air-flow, make experiment air-flow homogenising, in first testing tube, be placed with the inlet temperature meter, can measure the temperature that the preceding experiment of heat exchanging air-flow takes place, be provided with heat-generating pipe at experiment tube, make experiment air-flow and heat-generating pipe carry out convection heat transfer, the experiment gas flow temperature raises after the heat exchange, and enter in second testing tube, detect temperature this moment by the outlet temperature meter, test air-flow then and enter collapsible tube, make the experiment air-flow realize the step-down acceleration, and enter in the pitot tube, by getting the flow velocity that airduct and microbarograph detect its experiment air-flow, enter in the convergent divergent channel then, realize experiment air-flow supercharging deceleration, since the outlet of convergent divergent channel be connected with centrifugal type draught fan, air-flow enters atmosphere by behind the induced draft fan through air quantity adjusting flashboard; The inclination microbarograph with get airduct and be connected, its effect is to show velocity amplitude that pitot tube is surveyed; The heat-generating pipe accessory drive is connected with heat pipe, realizes the measurement of heat pipe temperature value, the functions such as control of heat pipe heating power by the thermopair that is arranged in the heat pipe surface; The control computer is connected with the heat-generating pipe accessory drive, and computing machine is used for collection of experiment data and processing.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (4)
1. the outer forced-convection heat transfer experimental provision of a pipe, comprise the ventilation duct that has horn-like import, first testing tube that is connected with described ventilation duct output terminal, the experiment tube that is connected with the described first testing tube output terminal, second testing tube that is connected with described experiment tube output terminal, the collapsible tube that the described second testing tube output terminal is connected, the pitot tube that is connected with described collapsible tube output terminal, the convergent divergent channel that is connected with described pitot tube output terminal, the centrifugal type draught fan that is connected with described convergent divergent channel output terminal, it is characterized in that: in ventilation duct, be provided with lattice structure, between described ventilation duct and described first testing tube, be provided with the current stabilization filter screen, in described first testing tube, be provided with the inlet temperature meter, be provided with heat-generating pipe at described experiment tube, be provided with the outlet temperature meter at described second testing tube, be provided with in described pitot tube and get airduct, the described airduct of getting is connected with outside microbarograph.
2. the outer forced-convection heat transfer experimental provision of pipe according to claim 1, it is characterized in that: also comprise the heat-generating pipe accessory drive, with the control computer that described heat-generating pipe accessory drive is connected, described heat-generating pipe accessory drive is connected with described heat-generating pipe.
3. the outer forced-convection heat transfer experimental provision of pipe according to claim 2 is characterized in that: be provided with air quantity in the lower end of described centrifugal type draught fan and regulate flashboard.
4. the outer forced-convection heat transfer experimental provision of pipe according to claim 3, it is characterized in that: the inclination microbarograph is counted in described minute-pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188149 CN203148872U (en) | 2013-04-15 | 2013-04-15 | Forced-convection heat transfer experimental apparatus outside tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188149 CN203148872U (en) | 2013-04-15 | 2013-04-15 | Forced-convection heat transfer experimental apparatus outside tube |
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| Publication Number | Publication Date |
|---|---|
| CN203148872U true CN203148872U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320188149 Expired - Fee Related CN203148872U (en) | 2013-04-15 | 2013-04-15 | Forced-convection heat transfer experimental apparatus outside tube |
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| CN (1) | CN203148872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279257A (en) * | 2018-02-28 | 2018-07-13 | 苏州科技大学 | Measure the device and method of forced convection heating rod cluster nusselt number |
-
2013
- 2013-04-15 CN CN 201320188149 patent/CN203148872U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279257A (en) * | 2018-02-28 | 2018-07-13 | 苏州科技大学 | Measure the device and method of forced convection heating rod cluster nusselt number |
| CN108279257B (en) * | 2018-02-28 | 2023-11-21 | 苏州科技大学 | Device and method for measuring forced convection heating rod cluster noose number |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140415 |