CN201852736U - Sample chamber device capable of heating and sealing in vacuum environment - Google Patents
Sample chamber device capable of heating and sealing in vacuum environment Download PDFInfo
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- CN201852736U CN201852736U CN2010205487105U CN201020548710U CN201852736U CN 201852736 U CN201852736 U CN 201852736U CN 2010205487105 U CN2010205487105 U CN 2010205487105U CN 201020548710 U CN201020548710 U CN 201020548710U CN 201852736 U CN201852736 U CN 201852736U
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Abstract
A sample chamber device capable of heating and sealing in vacuum environment can automatically open and close sample passages, and carry out heating and sealing operations. The sample chamber device can be used for loading solid samples and is characterized in that the device comprises a base, a motor, a reduction gearbox, a sample cup capable of being heated, a sealing cover plate, and so on. The motor and the reduction gearbox are fixedly connected with the base; an output shaft is fixedly connected with the sealing cover plate; a thermal insulation sleeve and the sample cup are welded on the base with a gap formed between the sleeve and the sample cup; an air guide pipe is welded in a through-hole on the upper part of the sample cup to form an air path; a spring is mounted in the top end of the base; and rolling balls are mounted below the spring and are pressed on the sealing cover plate.
Description
Technical field
The utility model relates to externally that environment is can control the sample chamber device that carries out open closed sample channel, heating, sealing automatically under the vacuum state, especially makes it discharge gas at solid samples such as the soil of collection in place on the celestial bodies such as the moon, Mars, rocks and carries out essential analysis.
Background technology
Along with the day by day progress of the mankind, can provide scientific basis for scientific exploration and research to the chemical substance of planetary surface, mineral matter analysis to outside space research.Sampling in place and analytical technology be owing to need not to transport back the earth to the sample of gathering and just can in placely analyze, and saved a large amount of funds and time and seem extremely important.Be accompanied by as magnetic mass spectrograph, quadrupole mass spectrometer etc. and analyze the instrument miniaturization Progress in Research, realize that at planetary surface original position sampling, original position analysis provide possibility.
Contain the gaseous state that gas flow is decided by the celestial body surface in the celestial body surface soil or in the rock.The very thin celestial body of gas particularly, the gas flow that contains in its soil is seldom, must it be discharged by the mode of heating, is stored in the sample chamber of sealing with to be analyzed.No matter for which kind of analytical instrument, the sample chamber must possess, and the sample chamber will possess functions such as folding, heating, sealing, so that the analytical instrument analysis.
When analysis in place is in the high vacuum environment, the gas that sample and sample discharged is before leading to analytical instrument, and the sample chamber must seal.The quality of its sealing has direct influence for precision of analysis.At present in general, guarantee air seal, promptly can not advance at a period of time inside and outside gas, internal gas can not run away, end face seal structure has two kinds of patterns usually, a kind of is the edge of a knife form of utilization metal flange, promptly adopts soft metal such as oxygen-free copper as encapsulant, and the sealing force that needs is 280Mpa.This power is given by bolted and is applied.But when outside, sample chamber itself is vacuum environment, especially be on the celestial body such as the moon unattendedly, will guarantee when the sample chamber end cap is wanted open and close to seal, this is inappropriate with the mechanism that gives huge sealing force by bolted calmly.Another kind of hermetically-sealed construction adopts O type rubber ring usually, applies bolted by sealing surface and makes O type rubber ring generation deformation reach sealing.This hermetically-sealed construction is removed being not suitable for beyond the use of bolted, impel it to discharge gas owing to generally will apply high temperature in the analysis in place to sample, this high temperature tends to make O type rubber ring not tolerate, the also impact analysis result of gas that heating is emitted, the anti-space radiation characteristic of O type rubber ring also is difficult to carry out simultaneously.Therefore above two kinds of hermetically-sealed constructions exist not enough in use in the space.
Summary of the invention
Technical matters: the purpose of this utility model provides that a kind of volume is little, weight is little, power is low, but heated sealant sample chamber device under the vacuum environment of can realize uncapping closure, heating, sealing, it can cooperate the sample-taker device of automation equipment and robot, especially is suitable for solid matter such as gas ingredients analyses such as soil, rock on celestial body surfaces such as the moon, Mars.
Technical scheme: but under the vacuum environment of the present utility model the heated sealant sample chamber device comprise fixing and gland bonnet rotating mechanism, be arranged in the band thermoshield cover of fixing and gland bonnet rotating mechanism the heating in vacuum cup, be positioned at the seal cover board mechanism on the heating in vacuum cup of band thermoshield cover;
Wherein, the heating in vacuum cup of band thermoshield cover comprises heater assembly in thread groove of the sample cup, sintering that there be a thread groove outside, is positioned at thermoshield sleeve outside the heater assembly, is positioned at the outside and has the gas conduit of the sample cup upper outside of thread groove, sample cup end face to have first optical surface; And form vacuum seal between the seal cover board of sealing mechanism.
Seal cover board mechanism comprise top have arc groove track and bottom have second optical surface seal cover board, be arranged in the hole of fixing and gland bonnet rotating mechanism, installation is used for ball and spring that seal cover board is exerted pressure, the bottom of ball is placed in the seal cover board arc groove track, and ball closely contacts with seal cover board.
Fixing and sealed rotational mechanism comprises the fixed pedestal of placing Heating Cup, spring etc., is arranged in motor and reducer casing that fixed pedestal provides rotary seal cover plate power, and the output shaft of reducer casing connects seal cover board mechanism, realizes rotatablely moving of cover plate.
On the heating in vacuum cup of band thermoshield cover, be provided with the heater assembly that the METAL HEATING PROCESS silk that scribbles the aluminium oxide ceramics powder is formed in the thread groove, be used for heating sample; Keep vacuum between thermoshield sleeve and the sample cup, to form vacuum heat-insulating layer; The thermoshield sleeve inner applies thermal reflecting coating, to increase the reflection of heat, reduces thermal losses.
In the heating in vacuum cup of band thermoshield cover, have exhaust hole on the thermoshield sleeve.When whole device was worked under vacuum environment, exhaust hole can make between thermoshield sleeve and the sample cup and keep vacuum, to form vacuum heat-insulating layer; When whole device is worked under non-vacuum environment, can carry out vacuum exhaust by aperture to the space between thermoshield sleeve and the sample cup with the external vacuum system, after making the formation vacuum heat-insulating layer, with aperture vacuum seal, make between thermoshield sleeve and the sample cup to keep vacuum, to form vacuum heat-insulating layer.
There is thread groove the sample cup outside, and the METAL HEATING PROCESS silk that is coated with the aluminium oxide ceramics powder outward constitutes the heater assembly sintering and form an integral body with sample cup in thread groove, and its outside is with the thermoshield sleeve and is protected.
The lower surface of seal cover board and the end face of sample cup are optical surface, and seal cover board is under the drive of reduction gearbox output shaft, and the end face of being close to sample cup horizontally rotates;
Described sample cup remains with chamfering at its end face, the rotation that is beneficial to seal cover board with reset.
The top of pedestal has the hole that ball and spring are installed, and spring is placed on the inside of hole, and ball is placed on the exit of hole and is pressed in the arc groove track of seal cover board, seal cover board is applied all the time the sealing load that is preset in the spring.
Described first optical surface and second optical surface, the surface is through plated film or apply solid lubricant film, occurs the cold welding phenomenon when avoiding fitting tightly.
When described heated sealant sample chamber device is worked, seal cover board turns to a side to open at motor effect backspin, make sample can put into the heating in vacuum cup, after putting into sample, motor is applied voltage opposite when opening with seal cover board, make the motor reverse rotation, seal cover board to opposite spin, and covers on heating in vacuum cup end face under the motor effect.The fluted track in seal cover board top, the ball in rotary course further groove track plays position-limiting action, and in order to increase the bore of sample channel, ball is positioned at the eccentric part of sample cup section.First optical surface of heating in vacuum cup and second optical surface of seal cover board fit together under the effect of spring and ball simultaneously, form vacuum seal.The cold welding phenomenon appears in smooth surface in the time of can avoiding fitting tightly through special processing.To the energising of the heater on the Heating Cup, sample is heated, the gas that sample discharges enters gas analysis instrument by gas conduit.
Beneficial effect:
(1) this utility model is fixed on motor and sample chamber on the same base, the sample chamber device compact conformation, and volume is little, and is in light weight;
(2) this utility model has been avoided the conventional seals structure of edge of a knife flange or O type rubber ring, utilize two very smooth surface closely contact, apply less pressure simultaneously, just can realize the folding and the sealing of sample chamber, simple in structure;
(3) this utility model only utilizes a motor to realize the folding and the sealing of sample chamber end cap, and is low in energy consumption;
(4) this utility model will add heater and be heated parts and weld together, and add the thermoshield sleeve, effectively reduce heat radiation and the thermal loss that causes, reduce power consumption;
(5) this utility model utilizes the rolling friction between ball and cover plate to reduce frictional resistance greatly, and motor is had protective effect;
But the utility model is as heated type sealed sample chamber device, can cooperate analytical instrument to be applied to the constituent analysis of solid sample release minimum gas in the vacuum environment, especially be applied to the release gas composition analysis of the solid sample such as ore, soil on celestial body surfaces such as the moon, Mars, particularly if adopt the sample chamber of many these structures of group, just can form repeatedly analytical model, improve accuracy.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 be among the utility model embodiment between seal cover board mechanism when rotation seal cover board and the sample cup relativeness and seal cover board surface groove and ball concern synoptic diagram;
Fig. 3 is the sectional structure synoptic diagram of relativeness between seal cover board and the sample cup.
The partial schematic diagram of Fig. 4 heated type sample cup.
Fig. 5 is the partial schematic diagram of thermoshield sleeve.
In above figure, have: heating in vacuum cup 1, sample cup 1-1, thread groove 1-1-1, chamfering 1-1-2, heater assembly 1-2, aluminium oxide ceramics powder 1-2-1, METAL HEATING PROCESS silk 1-2-2, thermoshield sleeve 1-3, thermal reflecting coating 1-3-1, exhaust hole 1-3-2, gas conduit 1-4, the first optical surface 1-5 of band thermoshield cover; Seal cover board mechanism 2, seal cover board 2-1, arc groove track 2-1-1, the second optical surface 2-1-2, ball 2-2, spring 2-3; Fix and gland bonnet rotating mechanism 3, fixed pedestal 3-1, motor 3-2, reducer casing 3-3, reduction gearbox output shaft 3-4, hole 3-5.
Embodiment
The technical solution of the utility model is made up of the heating in vacuum cup 1 of band thermoshield cover, seal cover board mechanism 2, fixing and gland bonnet rotating mechanism 3 three parts.
Aluminium oxide ceramics powder 1-2-1 forms heater assembly 1-2 on the outside electrophoresis of METAL HEATING PROCESS silk 1-2-2, and sintering is in the thread groove 1-1-1 of sample cup 1-1 outside, but formation heated type sample cup 1-1, and being fixed is welded on the fixed pedestal 3-1.Thermoshield sleeve 1-3 is welded on sample cup 1-1 and the fixed pedestal 3-1, wherein aperture 1-3-2 is offered in thermoshield sleeve 1-3 upper surface, when being used for the sample chamber and under vacuum environment, working, make between thermoshield sleeve 1-3 and the sample cup 1-1 to keep vacuum, to form vacuum heat-insulating layer; When work under non-vacuum environment in the sample chamber, can carry out vacuum exhaust to the space between thermoshield sleeve 1-3 and the sample cup 1-1 by aperture 1-3-2, make form vacuum heat-insulating layer after, with aperture 1-3-2 vacuum seal.The inside surface of thermoshield sleeve 1-3 plates reflectance coating 1-3-1 to increase the reflection of heat simultaneously, reduces thermal losses; Heater strip 1-2-2 can realize the effective heating to sample cup 1-1 after by electric current under the power consumption of minimum like this.Gas conduit 1-4 is welded on the top of sample cup 1-1, and its other end can dock with the interface of analytical instrument.Motor 3-2 and reducer casing 3-3 are fixed on the fixed pedestal 3-1.Reduction gearbox output shaft 3-4 is fixedlyed connected with seal cover board 2-1 one end, and the lower surface of seal cover board 2-1 is optical surface 2-1-2; The end face of sample cup 1-1 is smooth flat 1-5 also, and both fit tightly.The running of motor 3-2 drives reduction gearbox output shaft 3-4 rotation, and reduction gearbox output shaft 3-4 drive seal cover board 2-1 horizontally rotates along the end face 1-5 of sample cup 1-1.Arc groove track 2-1-1 is arranged on seal cover board 2-1, and this track is the center of circle with reduction gearbox output shaft 3-4 center.Cylindrical emptying aperture 3-5 is arranged at pedestal 3-1 top, inner mounting spring 2-3, and spring 2-3 lower end is pressed on the ball 2-2, forms the downforce to seal cover board 2-1.When reduction gearbox output shaft 3-4 drives seal cover board 2-1 when the end face of sample cup 1-1 horizontally rotates, ball 2-2 slides in the groove of seal cover board 2-1 freely.
When but the heated sealant sample chamber device is worked under the vacuum environment, seal cover board 2-1 turns to a side to open at motor 3-2 effect backspin, get out of the way sample intake passage, make sample can put into the heating in vacuum cup, after putting into sample, motor is applied voltage opposite when opening with seal cover board, make the motor reverse rotation, seal cover board 2-1 to opposite spin, and covers on heating in vacuum cup 1-1 end face under motor 3-2 effect.The fluted track 2-1-1 in seal cover board top, ball 2-2 in rotary course further groove track plays position-limiting action, the optical surface 2-1-2 of the optical surface 1-5 of heating in vacuum cup 1-1 and seal cover board fits tightly under the effect of spring 2-3 and ball 2-2 and is in the same place simultaneously, forms vacuum seal.Smooth surface occurs the cold welding phenomenon through special processing as plating when solid lubricant film can be avoided fitting tightly.To the energising of the heater 1-2 on the Heating Cup, sample is heated, the gas that sample discharges enters gas analysis instrument by gas conduit 1-4.
Claims (5)
1. but heated sealant sample chamber device under the vacuum environment is characterized in that: this device comprises fixing and gland bonnet rotating mechanism (3), be arranged in the heating in vacuum cup (1) of the band thermoshield cover of fixing and gland bonnet rotating mechanism (3), be positioned at the seal cover board mechanism (2) on the heating in vacuum cup (1) of band thermoshield cover;
Wherein, the heating in vacuum cup (1) of band thermoshield cover comprises heater assembly (1-2) in thread groove of the sample cup (1-1), sintering that there be a thread groove outside, is positioned at thermoshield sleeve (1-3) outside the heater assembly (1-2), is positioned at the outside and has gas conduit (1-4), the sample cup end face of the sample cup of thread groove (1-1-1) (1-1) upper outside to have first optical surface (1-5); And form vacuum seal between the seal cover board of sealing mechanism (2-1);
Seal cover board mechanism (2) comprise top have arc groove track (2-1-1) and bottom have second optical surface (2-1-2) seal cover board (2-1), be arranged in the hole (3-5) of fixing and gland bonnet rotating mechanism (3), be used for ball (2-2) and spring (2-3) that seal cover board is exerted pressure, the bottom of ball (2-2) is placed in the seal cover board arc groove track (2-1-1), and ball closely contacts with seal cover board;
Fixing and sealed rotational mechanism (3) comprises the fixed pedestal (3-1) of placing Heating Cup, spring etc., is arranged in motor (3-2) and reducer casing (3-3) that fixed pedestal (3-1) provides rotary seal cover plate power, the output shaft (3-4) of reducer casing (3-3) connects seal cover board mechanism (2), realizes rotatablely moving of cover plate.
2. but heated sealant sample chamber device under the vacuum environment according to claim 1, it is characterized in that: go up at the heating in vacuum cup (1) of band thermoshield cover and be provided with the heater assembly (1-2) that the METAL HEATING PROCESS silk (1-2-2) that scribbles aluminium oxide ceramics powder (1-2-1) is formed in the thread groove (1-1-1), be used for heating sample; Keep vacuum between thermoshield sleeve (1-3) and the sample cup (1-1), to form vacuum heat-insulating layer; Thermoshield sleeve 1-3 internal coat thermal reflecting coating (1-3-1) to increase the reflection of heat, reduces thermal losses.
3. but heated sealant sample chamber device under the vacuum environment according to claim 1 and 2 is characterized in that in the heating in vacuum cup (1) with the thermoshield cover, and thermoshield sleeve (1-3) is gone up and kept exhaust hole (1-3-2).
4. but heated sealant sample chamber device under the vacuum environment according to claim 1 and 2 is characterized in that: described sample cup (1-1), remain with chamfering (1-1-2) at its end face, the rotation that is beneficial to seal cover board with reset.
5. but heated sealant sample chamber device under the vacuum environment according to claim 1, it is characterized in that: described first optical surface (1-5) and second optical surface (2-1-2), there is plated film on the surface or applies solid lubricant film, occurs the cold welding phenomenon when avoiding fitting tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205487105U CN201852736U (en) | 2010-09-29 | 2010-09-29 | Sample chamber device capable of heating and sealing in vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205487105U CN201852736U (en) | 2010-09-29 | 2010-09-29 | Sample chamber device capable of heating and sealing in vacuum environment |
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| Publication Number | Publication Date |
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| CN201852736U true CN201852736U (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205487105U Expired - Fee Related CN201852736U (en) | 2010-09-29 | 2010-09-29 | Sample chamber device capable of heating and sealing in vacuum environment |
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| CN (1) | CN201852736U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975678A (en) * | 2010-09-29 | 2011-02-16 | 东南大学 | Sample chamber device capable of being heated and sealed in vacuum environment |
| CN103253448A (en) * | 2013-05-08 | 2013-08-21 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN108828155A (en) * | 2018-03-22 | 2018-11-16 | 中国科学院新疆生态与地理研究所 | A kind of detection method of cotton plants nitrogen content |
-
2010
- 2010-09-29 CN CN2010205487105U patent/CN201852736U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975678A (en) * | 2010-09-29 | 2011-02-16 | 东南大学 | Sample chamber device capable of being heated and sealed in vacuum environment |
| CN103253448A (en) * | 2013-05-08 | 2013-08-21 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN103253448B (en) * | 2013-05-08 | 2015-05-27 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN108828155A (en) * | 2018-03-22 | 2018-11-16 | 中国科学院新疆生态与地理研究所 | A kind of detection method of cotton plants nitrogen content |
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Legal Events
| 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: 20110601 Termination date: 20130929 |