CN219831076U - Hydrogen content detection device for molten aluminum - Google Patents
Hydrogen content detection device for molten aluminum Download PDFInfo
- Publication number
- CN219831076U CN219831076U CN202321109900.0U CN202321109900U CN219831076U CN 219831076 U CN219831076 U CN 219831076U CN 202321109900 U CN202321109900 U CN 202321109900U CN 219831076 U CN219831076 U CN 219831076U
- Authority
- CN
- China
- Prior art keywords
- detection tube
- detection
- tube
- hydrogen content
- aluminum liquid
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 117
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 72
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000001257 hydrogen Substances 0.000 title claims abstract description 53
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 239000000523 sample Substances 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910002804 graphite Inorganic materials 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 17
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The utility model discloses a device for detecting the hydrogen content of aluminum liquid, which relates to the technical field of metallurgy and aims to solve the problem that the detection accuracy and the detection efficiency of the hydrogen content in the aluminum liquid are low in the prior art; the detection tube is communicated with a vacuum pump for vacuumizing the detection tube, and the detection tube is also communicated with an air filling tank for filling hydrogen into the detection tube.
Description
Technical Field
The utility model relates to the technical field of metallurgy, in particular to a device for detecting the hydrogen content of aluminum liquid.
Background
The content of hydrogen in the aluminum liquid is an important mark reflecting the quality of aluminum alloy, and has a great influence on the internal quality of subsequent castings.
The liquid aluminum can react with water molecules to generate hydrogen in the melting process of the aluminum alloy and is dissolved into the aluminum liquid, when the aluminum liquid is solidified, the hydrogen can be separated out from the molten aluminum, if the content of residual hydrogen in the aluminum liquid is too high, air holes are easily formed in a casting, the mechanical property of the casting is further reduced, and the casting is scrapped due to serious problems, so that the hydrogen content of the aluminum liquid needs to be detected before the aluminum liquid is cast.
The common hydrogen measurement methods include an electrochemical method, a reduced pressure solidification sample density method, a gas pressure difference method, a spectrum analysis method and the like, but the detection methods all need to sample from an aluminum melting furnace or a container for containing aluminum liquid, the sample is placed in a detection device for detection, the operation is very complicated, and the sampled sample has certain contingency, so that the measurement accuracy is lower, and meanwhile, the auxiliary time for measurement is relatively longer, so that the detection efficiency of the hydrogen content in the aluminum liquid is low.
Disclosure of Invention
In order to solve the problems, namely the problem that the detection accuracy and the detection efficiency of the hydrogen content in the aluminum liquid are low in the prior art, the utility model provides an aluminum liquid hydrogen content detection device which comprises a detection tube used for extending into the aluminum liquid, wherein the detection tube is arranged in a hollow manner, and one end of the detection tube is provided with an absolute pressure sensor; the detection tube is communicated with a vacuum pump for vacuumizing the detection tube, and the detection tube is also communicated with an air filling tank for filling hydrogen into the detection tube.
Through adopting above-mentioned technical scheme, the vacuum pump can be with the intraductal evacuation state that reaches of detecting, the gas pitcher can be to filling the hydrogen of standard atmospheric pressure value in the detecting tube of vacuum state, and then according to absolute pressure sensor detects the atmospheric pressure value in the detecting tube and can obtain the hydrogen content in the aluminium liquid, and because the hydrogen of standard atmospheric pressure value has been filled in the detecting tube in advance, so the atmospheric pressure value in the detecting tube can be faster reach equilibrium state, and then shorten detection time, and then improve detection efficiency, simultaneously, the detecting tube can directly stretch into and detect the aluminium liquid in melting aluminium stove or the container of splendid attire aluminium liquid, need not the sample alone to detect, and then also avoided the sample to have accidental problem, make the detection precision also higher.
The utility model is further provided with: and a vacuum valve is arranged between the vacuum pump and the detection pipe.
Through adopting above-mentioned technical scheme, the break-make of vacuum pump and detecting tube can be controlled to the vacuum valve, and then after the vacuum pump is with the detecting tube evacuation, can make vacuum pump and detecting tube disconnection through closing the vacuum valve, and then after closing the vacuum pump, can also maintain the vacuum state in the detecting tube.
The utility model is further provided with: and a stop valve is arranged between the air charging tank and the detection pipe.
Through adopting above-mentioned technical scheme, the stop valve can control the intercommunication of gas pitcher and detecting tube, after the intraductal hydrogen that fills of detecting reached standard atmospheric pressure, both can make gas pitcher and detecting tube break off through closing the stop valve, maintains the intraductal hydrogen content of detecting at standard atmospheric pressure.
The utility model is further provided with: the detection tube deviates from the one end threaded connection of absolute pressure sensor has graphite probe, graphite probe with the inner chamber of detection tube is linked together.
Through adopting above-mentioned technical scheme, micron-sized hole on the graphite probe can supply hydrogen to pass the circulation, and graphite probe and detection tube threaded connection can realize the detachable connection of graphite probe and detection tube, conveniently to graphite probe's change.
The utility model is further provided with: the utility model discloses a pressure sensor, including the end cover, the detecting tube sets up the one end cover of absolute pressure sensor is equipped with the end cover, absolute pressure sensor fixed connection is in on the end cover, absolute pressure sensor's detection end runs through the end cover sets up, and absolute pressure sensor's detection end stretches into the inside setting of detecting tube.
Through adopting above-mentioned technical scheme, can make things convenient for the installation and the dismantlement to absolute pressure sensor more through the end cover.
The utility model is further provided with: the detection tube is connected with a positioning ring in a sliding manner, the positioning ring and the detection tube are coaxially arranged, and jackscrews are connected to the side walls of the positioning ring in a threaded manner and used for propping up the positioning ring and the detection tube.
Through adopting above-mentioned technical scheme, screw up the jackscrew and can make the position relative fixed of holding ring and detection pipe, and then when the one end of detection pipe stretches into in the aluminium liquid, can pass through the holding ring joint and melt aluminium stove or splendid attire aluminium liquid container's lid on, and screw up after the jackscrew, can also adjust the length that the detection pipe stretched into in the aluminium liquid, and then make the aluminium liquid that the detection pipe can adapt to different degree of depth.
The utility model is further provided with: the four jackscrews are uniformly distributed along the circumferential direction of the positioning ring; the positioning device is characterized in that a positioning frame is arranged below the positioning ring and is rectangular, the positioning frame is sleeved on the detection tube, and the width of the positioning frame is larger than that of the detection tube and smaller than that of the positioning ring.
Through adopting above-mentioned technical scheme, the cooperation of holding ring and locating rack can be with detecting the pipe support in the container top of splendid attire aluminium liquid to realize the detection to aluminium liquid.
The beneficial effects of the utility model are as follows:
1. the vacuum pump can be used for pumping the inside of the detection tube to a vacuum state, so that the hydrogen pressure in the aluminum liquid and the hydrogen pressure in the detection tube gradually reach balance under the action of pressure difference, the hydrogen content in the aluminum liquid can be obtained according to the detection pressure of the absolute pressure sensor, the detection tube directly stretches into the aluminum melting furnace or a container for containing the aluminum liquid to detect the aluminum liquid, independent sampling detection is not needed, and the problem that the sample has accidentally is avoided, so that the detection precision of the aluminum liquid is higher.
2. The hydrogen is filled into the detection tube through the air filling tank, so that the content of the hydrogen with standard atmospheric pressure can be filled into the detection tube in advance, the differential pressure between the inside of the detection tube and the aluminum liquid is reduced, the air pressure balance time is shortened, and the detection efficiency is improved.
Drawings
Fig. 1 shows a schematic structure of the present utility model.
Figure 2 shows a cross-section in the A-A direction.
Fig. 3 shows a schematic of the gas circuit of the present utility model.
Reference numerals: 1. a detection tube; 11. a graphite probe; 12. an end cap; 2. an absolute pressure sensor; 3. a vacuum valve; 4. a stop valve; 5. a positioning ring; 51. a jackscrew; 6. a positioning frame; 7. a vacuum pump; 8. and (5) an air filling tank.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
The utility model provides a device for detecting the hydrogen content of aluminum liquid, which comprises a detection tube 1, wherein the detection tube 1 is a ceramic tube, the detection tube 1 is hollow, one end of the detection tube 1 is sleeved with an end cover 12, the end cover 12 and the detection tube 1 are arranged in a sealing way, an absolute pressure sensor 2 is fixedly arranged on the end cover 12, and the model of the absolute pressure sensor 2 is TY-CYT-113. The absolute pressure sensor 2 is arranged on the surface of one side of the end cover 12, which is away from the detection tube 1, and the detection end of the absolute pressure sensor 2 penetrates through the end cover 12 and stretches into the detection tube 1 to be arranged inside for detecting the air pressure value in the detection tube 1.
The one end threaded connection that detecting tube 1 deviates from absolute pressure sensor 2 has graphite probe 11, and graphite probe 11 is linked together with detecting tube 1's inner chamber, and graphite probe 11 selects for use porous graphite probe 11, has offered a plurality of micron-order bleeder vent promptly on graphite to guarantee that hydrogen can pass through graphite probe 11.
Through with detection tube 1 and graphite probe 11 threaded connection, can be graphite probe 11 and detection tube 1 detachable, and then the change to graphite probe 11 is convenient.
The side wall of the detection tube 1 is communicated with a vacuum valve 3 through a pipeline, the output end of the vacuum valve 3 is communicated with a vacuum pump 7 through a pipeline, the vacuum valve 3 is arranged between the vacuum pump 7 and the detection tube 1, and the vacuum pump 7 can pump the interior of the detection tube 1 to a vacuum state.
The side wall of the detection tube 1 is also communicated with a stop valve 4 through a pipeline, the output end of the stop valve 4 is communicated with an inflation tank 8 through a pipeline, the stop valve 4 is arranged between the inflation tank 8 and the detection tube 1, and hydrogen is filled in the inflation tank 8 and can be filled into the detection tube 1.
The detection tube 1 is connected with a positioning ring 5 in a sliding manner, the positioning ring 5 is coaxially sleeved on the detection tube 1, and the positioning ring 5 can slide along the direction of the detection tube 1. Four jackscrews 51 are connected to the side wall of the positioning ring 5 in a threaded mode, the four jackscrews 51 are evenly distributed along the circumferential direction of the positioning ring 5, the jackscrews 51 are perpendicular to the detection tube 1, the jackscrews 51 penetrate through the positioning ring 5, and the positioning ring 5 and the detection tube 1 can be fixed relatively by tightening the four jackscrews 51.
The below of holding ring 5 is provided with locating rack 6, and locating rack 6 is the frame of rectangle, and locating rack 6 cover is established on detecting tube 1, and the width of locating rack 6 is greater than the diameter of detecting tube 1 and is less than the diameter setting of holding ring 5, and locating rack 6 can be put on the mouth of the aluminium melting furnace, or put on the container mouth of splendid attire aluminium liquid, on cooperation jackscrew 51 and holding ring 5, can make detecting tube 1 by the joint to certain height to detect aluminium liquid, and can also adjust its degree of depth that stretches into in the aluminium liquid, realize detecting the purpose to aluminium liquid of different degree of depth.
The detection process comprises the following steps: firstly, the detection tube 1 is positioned above the aluminum liquid through the cooperation of the positioning ring 5 and the positioning frame 6, so that the graphite probe 11 completely stretches into the aluminum liquid, then the vacuum valve 3 is opened, the stop valve 4 is closed, the vacuum pump 7 is started, the vacuum pump 7 pumps the interior of the detection tube 1 to a vacuum state, and the vacuum valve 3 and the vacuum pump 7 are closed.
Then, the stop valve 4 is opened, the gas tank 8 is opened, and the hydrogen gas starts to be filled into the detection tube 1 until the pressure value in the detection tube 1 reaches the standard atmospheric pressure value, and then the stop valve 4 and the gas tank 8 are closed.
Finally, if the pressure value of the hydrogen in the aluminum liquid is larger than the standard atmospheric pressure, the hydrogen in the aluminum liquid enters the detection tube 1 from the graphite probe 11, at this time, the pressure value in the detection tube 1 rises, if the pressure value of the hydrogen in the aluminum liquid is smaller than the standard atmospheric pressure, the hydrogen in the detection tube 1 enters the aluminum liquid from the graphite probe 11, and at this time, the pressure value in the detection tube 1 falls. The value displayed after the absolute pressure sensor 2 is stabilized is about equal to the pressure of the hydrogen in the aluminum liquid.
According to the hydrogen pressure in the aluminum liquid and the temperature of the aluminum liquid, the solubility of hydrogen in the aluminum liquid can be calculated, and the formula is as follows:
wherein C is H The solubility of hydrogen in aluminum liquid is K is a constant, T is the temperature of the aluminum liquid, R is a gas constant 8.314J/(mol.K), P H Is the pressure of hydrogen in aluminum liquid, E s Is the molar heat of solution of hydrogen.
In summary, the vacuum pump 7 can pump the inside of the detection tube 1 to a vacuum state, so that the hydrogen pressure in the aluminum liquid and the hydrogen pressure in the detection tube 1 are balanced gradually under the action of the pressure difference, and then the hydrogen content in the aluminum liquid can be obtained according to the detection pressure of the absolute pressure sensor 2, and the detection tube 1 directly stretches into the aluminum melting furnace or the container for containing the aluminum liquid to detect the aluminum liquid, so that independent sampling and detection are not needed, the problem that the sample has accident is avoided, and the detection precision of the aluminum liquid is higher. The hydrogen content of standard atmospheric pressure can be filled in the detection tube 1 in advance by filling the hydrogen into the detection tube 1 through the air filling tank 8, so that the differential pressure between the inside of the detection tube 1 and the aluminum liquid is reduced, the time of air pressure balance is shortened, and the detection efficiency is improved.
While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
In the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (7)
1. The utility model provides a aluminium liquid hydrogen content detection device which characterized in that: the aluminum liquid detection device comprises a detection tube (1) which is used for extending into aluminum liquid, wherein the detection tube (1) is arranged in a hollow mode, and one end of the detection tube (1) is provided with an absolute pressure sensor (2); the detection tube (1) is communicated with a vacuum pump (7) for vacuumizing the detection tube (1), and the detection tube (1) is also communicated with an inflation tank (8) for inflating hydrogen into the detection tube (1).
2. The apparatus for detecting hydrogen content in aluminum liquid according to claim 1, wherein: a vacuum valve (3) is arranged between the vacuum pump (7) and the detection tube (1).
3. The apparatus for detecting hydrogen content in aluminum liquid according to claim 1, wherein: a stop valve (4) is arranged between the air charging tank (8) and the detection pipe (1).
4. The apparatus for detecting hydrogen content in aluminum liquid according to claim 1, wherein: one end of the detection tube (1) deviating from the absolute pressure sensor (2) is connected with a graphite probe (11) in a threaded mode, and the graphite probe (11) is communicated with the inner cavity of the detection tube (1).
5. The apparatus for detecting hydrogen content in molten aluminum according to claim 4, wherein: the detection tube (1) is provided with an end cover (12) sleeved on one end of the absolute pressure sensor (2), the absolute pressure sensor (2) is fixedly connected to the end cover (12), the detection end of the absolute pressure sensor (2) penetrates through the end cover (12) to be arranged, and the detection end of the absolute pressure sensor (2) stretches into the detection tube (1) to be arranged inside.
6. The apparatus for detecting hydrogen content in aluminum liquid according to claim 1, wherein: the detection tube (1) is connected with a positioning ring (5) in a sliding manner, the positioning ring (5) and the detection tube (1) are coaxially arranged, and a jackscrew (51) is connected to the side wall of the positioning ring (5) in a threaded manner and used for propping up the positioning ring (5) and the detection tube (1).
7. The apparatus for detecting hydrogen content in molten aluminum according to claim 6, wherein: the jackscrews (51) are arranged in four, and the four jackscrews (51) are uniformly distributed along the circumferential direction of the positioning ring (5); the positioning device is characterized in that a positioning frame (6) is arranged below the positioning ring (5), the positioning frame (6) is rectangular, the positioning frame (6) is sleeved on the detection tube (1), the width of the positioning frame (6) is larger than that of the detection tube (1), and the diameter of the positioning frame is smaller than that of the positioning ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321109900.0U CN219831076U (en) | 2023-05-09 | 2023-05-09 | Hydrogen content detection device for molten aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321109900.0U CN219831076U (en) | 2023-05-09 | 2023-05-09 | Hydrogen content detection device for molten aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219831076U true CN219831076U (en) | 2023-10-13 |
Family
ID=88283359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321109900.0U Active CN219831076U (en) | 2023-05-09 | 2023-05-09 | Hydrogen content detection device for molten aluminum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219831076U (en) |
-
2023
- 2023-05-09 CN CN202321109900.0U patent/CN219831076U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100394161C (en) | Method and apparatus for quantitative determination of hydrogen content in casting aluminum alloy liquation | |
| CN219831076U (en) | Hydrogen content detection device for molten aluminum | |
| CN1936524A (en) | Pouring-basket plug-rod with continuous temperature measuring function | |
| CN105057634B (en) | A kind of method and device of the quantitative molten metal of vacuum pumping | |
| CN101694448B (en) | Vapor pressure testing device for easy-sublimation solid energetic materials | |
| US4013412A (en) | Method for judging purity of purified zinc sulphate solution used for electrolytic production of zinc | |
| CN110954440A (en) | Density liquid level detection device and detection method | |
| RU176602U1 (en) | DEVICE FOR DETERMINING HYDROGEN CONTENT IN METALS AND ALLOYS | |
| CN212989094U (en) | Device for measuring volume density of graphite material device without pollution | |
| CN219935837U (en) | Aluminum liquid hydrogen meter capable of adjusting bubble precipitation speed | |
| CN112051186A (en) | Method and device for measuring volume density of graphite crucible without pollution | |
| CN219495388U (en) | Device for detecting aluminum liquid amount in furnace | |
| CN219320040U (en) | Water permeable brick water permeability coefficient detection equipment | |
| CN218180052U (en) | Device for measuring gas volume | |
| US5345808A (en) | Gas analyzer for molten metals | |
| CN218725070U (en) | Calibrating device for helium mass spectrometer leak detector | |
| CN117548658A (en) | High-vacuum aluminum liquid transfer method and high-vacuum aluminum liquid transfer device | |
| CN216155453U (en) | Filling equipment is used in gel ink production | |
| CN219532403U (en) | Air tightness detection equipment | |
| CN218066681U (en) | Testing arrangement is used in oil mass sensor production | |
| CN2669179Y (en) | Refinery molten aluminium density measuring device | |
| CN214794544U (en) | Solution heat measuring device | |
| CN219084678U (en) | Device for measuring apparent porosity and volume density of diamond/silicon carbide composite material | |
| CN219641124U (en) | Temperature probe calibration auxiliary device and temperature probe calibration system | |
| CN104999049B (en) | A kind of method and device of the quantitative molten metal of vacuum pumping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |