CN114739853A - Device for testing capillary capacity of alkali metal heat pipe liquid absorption core - Google Patents
Device for testing capillary capacity of alkali metal heat pipe liquid absorption core Download PDFInfo
- Publication number
- CN114739853A CN114739853A CN202210418383.9A CN202210418383A CN114739853A CN 114739853 A CN114739853 A CN 114739853A CN 202210418383 A CN202210418383 A CN 202210418383A CN 114739853 A CN114739853 A CN 114739853A
- Authority
- CN
- China
- Prior art keywords
- alkali metal
- heat pipe
- test tube
- heating furnace
- metal heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to a device for testing the capillary capacity of an alkali metal heat pipe wick, which comprises a suspension weighing device, a test tube for containing alkali metal, a driving mechanism for driving the test tube to move up and down and a well-type heating furnace for heating the test tube, wherein the suspension weighing device is fixedly arranged above the well-type heating furnace, the bottom of the suspension weighing device is provided with a lifting hook for suspending the wick, the test tube is upwards opened and is positioned right below the lifting hook, the lower part of the test tube is inserted into a heating cavity of the well-type heating furnace, and compared with the problem that the prior art is lack of an exploration test for the capillary force of the alkali metal heat pipe wick, the device provided by the invention can test the capillary force of the alkali metal heat pipe wick, the method has important significance for guiding the selection of the operation condition of the heat pipe, thereby avoiding the occurrence of the capillary limit of the high-temperature heat pipe and ensuring the operation safety of the space reactor.
Description
Technical Field
The invention relates to the technical field of liquid absorption cores, in particular to a device for testing the capillary capacity of a liquid absorption core of an alkali metal heat pipe.
Background
The heat pipe is a high-efficiency heat transfer element organically combining boiling and condensation, heat transfer is realized mainly by means of phase change of working media and continuous working media circulation, and the heat pipe is widely applied due to the characteristics of extremely high heat transfer efficiency, excellent temperature equalization performance, capability of being manufactured in special shapes and the like since the appearance of the heat pipe. The heat pipe with the working temperature exceeding 450 ℃ is generally called a high-temperature heat pipe, and some alkali metals such as sodium, potassium, lithium and the like are generally used as working media and are also called alkali metal high-temperature heat pipes. Due to the passive safety, the method has wide application prospect in the aspects of heat control of special aircrafts, cooling of space nuclear reactors, heat pipe reactors and the like. However, the heat transfer capability of a heat pipe is limited by its own heat transfer limit. When the heat pipe reaches the heat transfer limit, the heat of the reactor core cannot be led out in time, thereby causing the safety accident of the reactor. The capillary limit is that the capillary pressure generated by the evaporation section and the condensation section of the heat pipe is not enough to overcome the pressure drop generated by the backflow of the working medium, and the working medium cannot normally flow back to the evaporation section, so that the evaporation section is dried up, the temperature of the wall surface of the evaporation section is rapidly increased, and even the wall of the heat pipe is burnt out. Because liquid metal has higher density and viscosity, and larger driving force is needed for backflow, the research on the capillary force of the high-temperature heat pipe liquid absorption core can guide the selection of the operation condition of the heat pipe, so that the occurrence of the capillary limit of the high-temperature heat pipe is avoided, and the operation safety of a space reactor is ensured.
Disclosure of Invention
The invention aims to: aiming at the problem that the prior art lacks a research test for the capillary force of the alkali metal heat pipe liquid absorption core, the device for testing the capillary force of the alkali metal heat pipe liquid absorption core is provided.
In order to realize the purpose, the technical scheme of the invention is as follows:
the utility model provides a test alkali metal heat pipe imbibition core capillary ability's device, includes hangs weighing device, is used for holding alkali metal's test tube, is used for the drive the actuating mechanism that the test tube reciprocated and be used for the well formula heating furnace of test tube heating, hang weighing device fixed set up in well formula heating furnace top, it is equipped with the lifting hook that is used for hanging the imbibition core to hang weighing device bottom, the test tube opening just is located up under the lifting hook, the lower part of test tube is pegged graft in the heating chamber of well formula heating furnace.
By adopting the technical scheme, the device comprises the suspension weighing device, the test tube, the driving mechanism and the well type heating furnace, a certain amount of solid alkali metal is placed in the test tube, the liquid absorption core is vertically suspended and weighed by the lifting hook below the suspension weighing device, the height of the test tube is adjusted by the driving mechanism to ensure that the lower end of the liquid absorption core can be immersed in the liquefied alkali metal, then the test tube is heated by the well type heating furnace to liquefy the alkali metal, after the capillary phenomenon occurs, the mass change of the liquid absorption core measured by the suspension weighing device is recorded, and the rising height of the alkali metal in the liquid absorption core is measured, calculated and recorded at the same time, so that the capillary capacity of the liquid absorption core is comprehensively reflected, compared with the problem that the capillary force of the alkali metal heat pipe liquid absorption core is not researched in the prior art, the device provided by the invention can test the capillary force of the alkali metal heat pipe liquid absorption core, the method has important significance for guiding the selection of the operation condition of the heat pipe, thereby avoiding the occurrence of the capillary limit of the high-temperature heat pipe and ensuring the operation safety of the space reactor.
Further, actuating mechanism includes electric jar, test tube clamp and connecting plate, the electric jar includes step motor, electric jar cylinder body and electric jar slider, step motor can drive the electric jar slider is in slide along vertical direction on the electric jar cylinder body, test tube clamp one end centre gripping the test tube, the other end passes through the connecting plate with electric jar slider fixed connection, step motor can be through the upper and lower displacement volume of the accurate control test tube of drive electric jar slider for test result is more accurate.
Further, a dust guard has been laid to well heating furnace upper surface, the edge of dust guard stretches out the edge of well heating furnace upper surface, dust guard are used for sheltering from the below dust, prevent that the dust from getting into the test tube and influencing the test result.
Furthermore, be equipped with on the dust guard and be used for supporting hang weighing device's support frame, the support frame includes horizontally backup pad and a plurality of bracing piece of vertical setting, the upper and lower both ends of bracing piece respectively with the backup pad with the dust guard is connected, be equipped with in the backup pad and be used for passing the first via hole of lifting hook, support frame simple structure easily makes and the installation of being convenient for.
Furthermore, a heat insulation plate is arranged between the supporting plate and the hanging weighing device, a second through hole used for penetrating through the lifting hook is formed in the heat insulation plate, and the heat insulation plate is arranged to prevent the hanging weighing device from being influenced by radiation heat of high-temperature alkali metal.
Further, the pit-type heating furnace includes that heating furnace body and lid fit the heating bell of heating chamber top, heating bell middle part is equipped with the mounting hole, the test tube is pegged graft in the mounting hole, can take off the bell earlier and put again and get alkali metal sample and change the test tube operation, it is more convenient to operate.
Furthermore, the material of test tube is stainless steel, and high temperature resistant and heat conduction effect are better.
Furthermore, the suspension weighing device is an electronic balance, and accurate weighing of mass can be achieved.
Furthermore, the device is integrally arranged in a glove box in an inert gas environment, so that the influence of the oxidation of alkali metal on the test result is prevented.
Furthermore, a fan is arranged in the glove box and is communicated with the alkali metal steam absorption device through a pipeline for absorbing the alkali metal steam emitted from the test tube opening at high temperature, so that the problem that the alkali metal steam is condensed into powder in the glove box to cause potential safety hazards in experiments or equipment damage is avoided.
Compared with the prior art, the invention has the beneficial effects that: the device provided by the invention can test the capillary force of the liquid absorption core of the alkali metal heat pipe, and has important significance for guiding the selection of the operation condition of the heat pipe, thereby avoiding the occurrence of the capillary limit of the high-temperature heat pipe and ensuring the operation safety of the space reactor.
Description of the drawings:
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a right side view of the present invention;
fig. 3 is a front sectional view of the present invention.
The labels in the figure are: 1-suspended weighing device, 2-heat insulation plate, 3-support plate, 4-support rod, 5-dust-proof plate, 6-test tube, 7-heating furnace cover, 8-test tube clamp, 9-stepping motor, 10-electric cylinder body, 11-electric cylinder slide block, 12-connecting plate, 13-electric cylinder support, 14-heating furnace body and 15-heating chamber.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 invention and are not intended to limit the invention.
The embodiment of the invention provides a device for testing the capillary capacity of an alkali metal heat pipe wick, which comprises a suspension weighing device 1, a test tube 6 for containing alkali metal, a driving mechanism for driving the test tube 6 to move up and down and a well type heating furnace for heating the test tube 6, wherein the suspension weighing device 1 is fixedly arranged above the well type heating furnace, the bottom of the suspension weighing device 1 is provided with a lifting hook for suspending the wick, the test tube 6 is upwards opened and is positioned under the lifting hook, and the lower part of the test tube 6 is inserted into a heating cavity 15 of the well type heating furnace; the device is integrally arranged in a glove box in an inert gas environment; a fan is arranged in the glove box and is communicated with the alkali metal vapor absorption device through a pipeline; the test tube 6 is made of stainless steel; the alkali metal can be one of sodium, potassium, lithium and other metals, in the embodiment, sodium is selected as a test metal, and the inert gas in the glove box is selected as argon; the suspension weighing device is an electronic balance;
the driving mechanism comprises an electric cylinder, a test tube clamp 8 and a connecting plate 12, the electric cylinder comprises a stepping motor 9, an electric cylinder body 10 and an electric cylinder sliding block 11, the stepping motor 9 can drive the electric cylinder sliding block 11 to slide on the electric cylinder body 10 along the vertical direction, one end of the test tube clamp 8 clamps the test tube 6, and the other end of the test tube clamp is fixedly connected with the electric cylinder sliding block 11 through the connecting plate 12;
a dustproof plate 5 is laid on the upper surface of the well-type heating furnace, and the edge of the dustproof plate 5 extends out of the edge of the upper surface of the well-type heating furnace;
the electric cylinder body 10 is fixedly arranged on the dust guard 5 through an electric cylinder bracket 13;
the dustproof plate 5 is provided with a support frame for supporting and hanging the weighing device 1, the support frame comprises a horizontal support plate 3 and a plurality of vertically arranged support rods 4, the upper end and the lower end of each support rod 4 are respectively connected with the support plate 3 and the dustproof plate 5, and the support plate 3 is provided with a first through hole for allowing a lifting hook to pass through;
a heat insulation plate 2 is arranged between the support plate 3 and the suspension weighing device 1, and a second through hole for passing through the lifting hook is formed in the heat insulation plate 2; the heat insulation board 2 is made of marble;
the pit-type heating furnace comprises a heating furnace body 14 and a heating furnace cover 7 covering the heating cavity 15, wherein a mounting hole is formed in the middle of the heating furnace cover 7, and the test tube 6 is inserted into the mounting hole.
Specifically, when the device is used for testing, firstly, an ultrasonic cleaning instrument is used for cleaning the liquid absorption core in absolute ethyl alcohol and acetone in sequence; then delivering the cleaned wick sample to the interior of a glove box through a glove box transition cabin; then, cutting off an oxide layer on the surface of the alkali metal in a glove box, weighing a certain amount of alkali metal by using an electronic balance and placing the alkali metal in a test tube 6; then, adjusting the reading of the electronic balance and zeroing the reading, vertically hanging a liquid suction core by a lifting hook below the electronic balance and weighing the liquid suction core; the clamping height of the test tube 6 is adjusted through the stepping motor 9, the lower end of the liquid suction core can be ensured to be immersed in the liquefied alkali metal, and the initial infiltration depth of the liquid suction core in the alkali metal is obtained through calculation; setting a heating program of the well-type heating furnace; when the water content and the oxygen content in the adjusting gloves are respectively reduced to be below 0.5ppm and 1ppm and the readings of the electronic balance are not obviously changed any more, the well-type heating furnace is started; after the capillary phenomenon occurs, recording the mass change of the liquid absorption core measured by an electronic balance, measuring the distance between the liquid surface of the alkali metal in the liquid absorption core and the upper end of the liquid absorption core by using a ruler, calculating the rising height of the alkali metal in the liquid absorption core by combining the initial infiltration depth and the length of the liquid absorption core, and recording the height; the capillary capacity of the liquid absorbing core can be comprehensively reflected by the rising height and the quality change condition of the alkali metal in the liquid absorbing core, and the device can be used for exploring the difference of the capillary capacities of different liquid absorbing cores of the alkali metal at the same temperature; well heaters can also be used to provide different heating temperatures to explore the effect of temperature on the capillary ability of the alkali metal in the wick.
By adopting the technical scheme, the device comprises the suspension weighing device, the test tube, the driving mechanism and the well type heating furnace, a certain amount of solid alkali metal is placed in the test tube, the liquid absorption core is vertically suspended by the lifting hook below the suspension weighing device and weighed, the height of the test tube is adjusted by the driving mechanism to ensure that the lower end of the liquid absorption core can be immersed in the liquefied alkali metal, then the test tube is heated by the well type heating furnace to liquefy the alkali metal, after a capillary phenomenon occurs, the mass change of the liquid absorption core measured by the suspension weighing device is recorded, and the rising height of the alkali metal in the liquid absorption core is measured, calculated and recorded simultaneously, so that the capillary capacity of the liquid absorption core is comprehensively reflected, compared with the problem that the capillary force of the alkali metal heat pipe liquid absorption core is not researched in the prior art, the device provided by the invention can test the capillary force of the alkali metal heat pipe liquid absorption core, the method has important significance for guiding the selection of the operation condition of the heat pipe, thereby avoiding the occurrence of the capillary limit of the high-temperature heat pipe and ensuring the operation safety of the space reactor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a test alkali metal heat pipe imbibition core capillary ability's device which characterized in that: including hanging weighing device (1), be used for holding alkali metal's test tube (6), be used for the drive the actuating mechanism that test tube (6) reciprocated and be used for giving the well heating furnace of test tube (6) heating, hang weighing device (1) fixed set up in well heating furnace top, it is equipped with the lifting hook that is used for hanging the imbibition core to hang weighing device (1) bottom, test tube (6) opening just is located up under the lifting hook, the lower part of test tube (6) is pegged graft in the heating chamber (15) of well heating furnace.
2. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 1, wherein: actuating mechanism includes electric jar, test tube clamp (8) and connecting plate (12), the electric jar includes step motor (9), electric jar cylinder body (10) and electric jar slider (11), step motor (9) can drive electric jar slider (11) are in slide along vertical direction on electric jar cylinder body (10), test tube clamp (8) one end centre gripping test tube (6), the other end passes through connecting plate (12) with electric jar slider (11) fixed connection.
3. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 1, wherein: a dustproof plate (5) is laid on the upper surface of the well-type heating furnace, and the edge of the dustproof plate (5) extends out of the edge of the upper surface of the well-type heating furnace.
4. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 3, wherein: be equipped with on dust guard (5) and be used for supporting hang the support frame of weighing device (1), the support frame includes a plurality of bracing piece (4) of horizontally backup pad (3) and vertical setting, the upper and lower both ends of bracing piece (4) respectively with backup pad (3) with dust guard (5) are connected, be equipped with on backup pad (3) and be used for passing the first via hole of lifting hook.
5. The apparatus for testing the capillary ability of a wick for an alkali metal heat pipe according to claim 4, wherein: and a heat insulation plate (2) is arranged between the supporting plate (3) and the hanging weighing device (1), and a second through hole for penetrating through the lifting hook is formed in the heat insulation plate (2).
6. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 1, wherein: well formula heating furnace closes including heating furnace body (14) and lid heating furnace lid (7) above heating chamber (15), heating furnace lid (7) middle part is equipped with the mounting hole, test tube (6) are pegged graft in the mounting hole.
7. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 1, wherein: the material of test tube (6) is stainless steel.
8. The apparatus for testing the capillary ability of a wick for an alkali metal heat pipe according to claim 1, wherein: the suspension weighing device (1) is an electronic balance.
9. An apparatus for testing alkali metal heat pipe wick capillary ability according to claim 1, wherein: the device is integrally arranged in a glove box in an inert gas environment.
10. An apparatus for testing the capillary ability of a wick for an alkali metal heat pipe according to claim 9, wherein: and a fan is arranged in the glove box and is communicated with the alkali metal vapor absorption device through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418383.9A CN114739853A (en) | 2022-04-20 | 2022-04-20 | Device for testing capillary capacity of alkali metal heat pipe liquid absorption core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418383.9A CN114739853A (en) | 2022-04-20 | 2022-04-20 | Device for testing capillary capacity of alkali metal heat pipe liquid absorption core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114739853A true CN114739853A (en) | 2022-07-12 |
Family
ID=82282950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210418383.9A Pending CN114739853A (en) | 2022-04-20 | 2022-04-20 | Device for testing capillary capacity of alkali metal heat pipe liquid absorption core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114739853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116593529A (en) * | 2023-07-17 | 2023-08-15 | 成都理工大学 | Device and method for judging and intervening heat transfer limit of high-temperature heat pipe |
-
2022
- 2022-04-20 CN CN202210418383.9A patent/CN114739853A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116593529A (en) * | 2023-07-17 | 2023-08-15 | 成都理工大学 | Device and method for judging and intervening heat transfer limit of high-temperature heat pipe |
| CN116593529B (en) * | 2023-07-17 | 2023-09-29 | 成都理工大学 | Device and method for judging and intervening heat transfer limit of high-temperature heat pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107271320B (en) | A kind of thermogravimetric analyzer that can be achieved to be rapidly heated | |
| CN108007809B (en) | Rapid heating wide-range thermogravimetric analyzer | |
| CN107966398B (en) | Test device for simulating high-temperature corrosion | |
| CN114739853A (en) | Device for testing capillary capacity of alkali metal heat pipe liquid absorption core | |
| WO2021115355A1 (en) | Gasification experiment system and method suitable for solid waste | |
| CN200972442Y (en) | High temp. thermobalance | |
| CN102507373B (en) | Measuring device and method of melting volume expansion ratio/molten state density of material | |
| CN207516197U (en) | One kind is rapidly heated wide-range thermogravimetric analyzer | |
| CN215768347U (en) | Thermal extension test device | |
| Ragheb et al. | Observations in transition boiling of subcooled water under forced convective conditions | |
| CN107561315B (en) | The test device and method of microcosmic olefin hydrogen and hydrogen segregation activation energy in a kind of metal | |
| CN107345886A (en) | Determine coal thermal weight loss performance and thermal conductivity and the apparatus and method of measure coal or coke reactivity | |
| CN219065187U (en) | Device of density is surveyed to top hammer of easy operation | |
| CN207541007U (en) | A kind of controlled atmosphere unstable state heat-pole method heat conduction coefficient tester | |
| CN206330916U (en) | The hot load of key device of mineral wool | |
| CN212006746U (en) | Coal quality analyzer furnace and coal quality analyzer | |
| CN211717181U (en) | Vertical high-temperature weightlessness analysis sintering furnace | |
| CN206515268U (en) | A kind of automatic testing equipment to stone material resistance to elevated temperatures | |
| CN106556549B (en) | A kind of method and apparatus of oil plant air-distillation column overhead scaling rate test | |
| CN113008033B (en) | High-temperature reaction tube furnace capable of accurately controlling temperature and atmosphere and rapidly quenching sample | |
| CN109238402A (en) | A kind of device measuring titanium sponge high temperature liquid level in closed container | |
| CN220751891U (en) | Large-capacity coal pyrolysis weightlessness device | |
| KR100440865B1 (en) | Thermobalance analyzer equipped with heating tube and porous sample basket | |
| CN220932689U (en) | Balance structure of thermogravimetric analyzer | |
| CN116718509A (en) | Low-temperature thermogravimetric analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |