CN116099583B - Full-automatic anhydrous hydrogen fluoride preparation device - Google Patents
Full-automatic anhydrous hydrogen fluoride preparation device Download PDFInfo
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- CN116099583B CN116099583B CN202211723204.9A CN202211723204A CN116099583B CN 116099583 B CN116099583 B CN 116099583B CN 202211723204 A CN202211723204 A CN 202211723204A CN 116099583 B CN116099583 B CN 116099583B
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- Prior art keywords
- sampling
- tube
- driving
- inner tube
- outer tube
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910000040 hydrogen fluoride Inorganic materials 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 252
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001506 inorganic fluoride Inorganic materials 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002760 rocket fuel Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- SANRKQGLYCLAFE-UHFFFAOYSA-H uranium hexafluoride Chemical compound F[U](F)(F)(F)(F)F SANRKQGLYCLAFE-UHFFFAOYSA-H 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
- B01L3/5082—Test tubes per se
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
The application discloses a full-automatic anhydrous hydrogen fluoride preparation device, which comprises a sampling outer tube connected with a sampling valve and a sampling inner tube integrated in the sampling outer tube, wherein the sampling outer tube is provided with a sampling valve; the sampling inner tube is configured as a sleeve structure that is partially movable to effect axial movement along the sampling outer tube; the movable part of the sampling inner tube can move along the axial direction of the sampling outer tube and extend to the outside of the sampling outer tube to form a sampling end; the movable portion of the sampling inner tube can move along the axial direction of the sampling outer tube to be sealed and accommodated inside the sampling outer tube. The device adopts a telescopic sampling tube structure formed by the sampling outer tube and the sampling inner tube, and the sampling inner tube adjusts the position of the sampling end by the axial movement of the movable inner tube so as to finish the sampling operation of penetrating into the sampling bottle or the storage state of being stored into the sampling outer tube; the movement of the movable inner tube is driven by the driving structure, so that the volatilization of anhydrous hydrogen fluoride caused by the exposure of the sampling inner tube to the outside is avoided, the safety is improved, and better sealing performance is realized.
Description
Technical Field
The application relates to the technical field of anhydrous hydrogen fluoride preparation, in particular to a full-automatic anhydrous hydrogen fluoride preparation device.
Background
Anhydrous hydrogen fluoride is widely used in industries such as atomic energy, chemical industry, petroleum, etc., and is a strong oxidant, or is a basic raw material for preparing elemental fluorine, various fluorine refrigerants and inorganic fluorides, and various organic fluorides can be prepared into various aqueous hydrofluoric acid for various purposes, and is used for preparing graphite, catalysts for manufacturing organic compounds, etc. Is a raw material for producing refrigerant Freon, fluorine-containing resin, organic fluoride and fluorine. Can be used as a catalyst for organic diaphragm formation such as alkylation, polymerization, condensation, isomerization and the like in chemical production. It is also used for corroding stratum and extracting rare-earth elements and radioactive elements when mining some ore beds. The material is used in the production of uranium hexafluoride, rocket fuel and additive, glass etchant, impregnated wood, etc
In the anhydrous hydrogen fluoride preparation process, sampling of anhydrous hydrogen fluoride is a key link. Since anhydrous hydrogen fluoride is volatile and toxic, it is necessary to ensure the sealability and safety of the anhydrous hydrogen fluoride sampling structure. In the prior art, a Chinese patent application with publication number of CN114739750A and application date of 2022, 04 month and 11, entitled "an anhydrous hydrogen fluoride closed sampling system" discloses a sealed sampling system for anhydrous hydrogen fluoride, which is characterized in that a sampling bottle is placed in a sealed box body, and is connected with the sampling bottle through a sampling tube for sampling. However, in the prior art, although the sampling bottle is sealed by the sealed box body to prevent partial volatilization, the sampling tube is still exposed to the outside for a long time, especially when the sampling bottle is replaced or the sampling tube is replaced, the sampling tube needs to be drawn out, and the residual hydrogen fluoride is easy to scatter outside in the process, even touch the body of an operator, so that the sampling tube has a certain potential safety hazard.
Therefore, based on the above technical problems, a person skilled in the art needs to develop a full-automatic anhydrous hydrogen fluoride preparation device.
Disclosure of Invention
The application aims to provide a full-automatic anhydrous hydrogen fluoride preparation device which uses a telescopic sampling tube to ensure that a sampling inner tube is not exposed to the outside, improves the tightness and reduces the volatilization of hydrogen fluoride.
In order to achieve the above object, the present application provides the following technical solutions:
the application relates to a full-automatic anhydrous hydrogen fluoride preparation device, which is provided with a sampling bottle and a sampling valve connected with the sampling bottle, wherein the sampling valve is communicated with the sampling bottle through a sampling assembly so as to realize the sampling of anhydrous hydrogen fluoride;
the sampling assembly includes:
a sampling outer tube connected with the sampling valve and a sampling inner tube integrated inside the sampling outer tube;
the sampling inner tube is configured to be partially movable to effect a sleeve structure that moves axially along the sampling outer tube;
the movable part of the sampling inner tube can move along the axial direction of the sampling outer tube and extend to the outside of the sampling outer tube to form a sampling end;
the movable portion of the sampling inner tube is movable in an axial direction of the sampling outer tube to be sealingly received inside the sampling outer tube.
Further, one end of the sampling outer tube is configured as a first connecting end connected with a sampling valve, and the other end of the sampling outer tube is configured as a second connecting end connected with the sampling bottle;
the first connecting end is connected with the sampling valve through a flange;
the sampling inner tube is divided into:
a fixed inner tube and a movable inner tube;
the fixed inner tube and the sampling outer tube are connected to the first connecting end, and the other end of the fixed inner tube extends into the sampling outer tube;
the movable inner tube is partially embedded inside the fixed inner tube, and the movable inner tube can move along the axial direction of the fixed inner tube so as to adjust the position of the movable inner tube relative to the second connecting end.
Further, the fixed inner tube and the sampling outer tube are welded and fixed through annular plates;
the flange is welded at the annular plate, and when the sampling outer tube is connected with the sampling valve through the flange, the fixed inner tube is communicated with the sampling valve.
Further, the movable inner tube includes:
a driving pipe body close to one side of the fixed inner pipe and a sampling pipe body connected with the driving pipe body and close to one side of the second connecting end;
the sampling outer tube is integrated with a driving structure, and the driving end of the driving structure extends to the inside of the sampling outer tube to drive the driving tube body to move along the axial direction of the fixed inner tube and drive the sampling tube body to move.
Further, the movable inner tube is configured to have a structure in which at least the driving tube body is a straight tube;
the driving pipe body is positioned in the fixed inner pipe near one end part of the fixed inner pipe, and a first sealing part is arranged on the inner ring of the fixed inner pipe;
the end part of the driving pipe body embedded into one end of the fixed inner pipe protrudes outwards to form a limiting part, the outer wall of the driving pipe body is matched with the inner diameter of the first sealing part to form interference fit or clearance fit, and the outer diameter of the limiting part of the driving pipe body is larger than the inner diameter of the first sealing part.
Further, the driving structure includes:
a driven bevel gear positioned at the periphery of the driving tube body;
a driving bevel gear engaged with the driven bevel gear to drive the driven bevel gear to rotate; and
a drive section located outside the sampling outer tube;
a driving part connecting pipe is arranged between the driving part and the sampling outer pipe, the driving part penetrates through the driving part connecting pipe and extends into the sampling outer pipe, and one end of the driving part extending into the sampling outer pipe is connected with the driving bevel gear to drive the driving bevel gear to rotate;
the driven bevel gear inner ring is provided with an internal thread, and the periphery of the driving pipe body is provided with an external thread matched with the internal thread;
the driven bevel gear converts the rotary motion of the driven bevel gear into the linear motion of the driving pipe body through the matching of the internal thread and the external thread.
Further, a second sealing part is arranged in one side of the second connecting part of the sampling outer tube;
the outer diameter of the movable inner tube is matched with the inner diameter of the second sealing part, penetrates through the second sealing part and is in interference fit or clearance fit with the second sealing part.
Further, one end of the driving pipe body, which is close to the fixed inner pipe, is transited through a folding pipe body;
a linkage structure for driving the folding pipe body to unfold or fold and store is arranged between the fixed inner pipe and the driving pipe body;
when the driving structure drives the movable inner tube to move towards one side outside the sampling outer tube, the linkage structure drives the folding tube body to unfold to form a straight tube structure;
when the driving structure drives the movable inner tube to move towards one side inside the sampling outer tube, the linkage structure drives the folding tube body to fold and store so as to form a folding structure.
Further, the linkage structure includes:
a plurality of groups of linkage rods are uniformly distributed along the circumference of the folding pipe body, each group of linkage rods is provided with two linkage rods which are rotationally connected through a linkage rod rotating shaft, the connecting rod rotating shaft is in sliding connection with a chute arranged on an umbrella-shaped barrel arranged on the inner wall of the sampling outer tube through a fixed rod, and one end of the fixed rod, which is matched with the chute, is provided with a sliding block;
at least two ends of the linkage rod are connected with the folding pipe body through connecting rods so as to drive the corresponding parts of the folding pipe body to synchronously move.
Further, the umbrella-shaped barrel is configured in a structure in which the cross-sectional dimension gradually decreases from a side away from the second connecting end to a side close to the second connecting end.
In the technical scheme, the full-automatic anhydrous hydrogen fluoride preparation device provided by the application has the following beneficial effects:
the device adopts a telescopic sampling tube structure formed by the sampling outer tube and the sampling inner tube, and the sampling inner tube adjusts the position of the sampling end by the axial movement of the movable inner tube so as to finish the sampling operation of penetrating into the sampling bottle or the storage state of being stored into the sampling outer tube; the movement of the movable inner tube is driven by the driving structure, so that the volatilization of anhydrous hydrogen fluoride caused by the exposure of the sampling inner tube to the outside is avoided, the safety is improved, and better sealing performance is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of a structure of a sampling inner tube of a sampling assembly of a full-automatic anhydrous hydrogen fluoride preparation device according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of the working state of a sampling inner tube of a sampling assembly of a full-automatic anhydrous hydrogen fluoride preparation device according to an embodiment of the present application;
FIG. 3 is an enlarged view showing the connection structure between the driving pipe body and the fixed inner pipe of the full-automatic anhydrous hydrogen fluoride preparation device according to the embodiment of the present application;
fig. 4 is a schematic structural view of a sampling inner tube containing state of a sampling assembly of a second embodiment of a full-automatic anhydrous hydrogen fluoride preparation device according to an embodiment of the present application;
FIG. 5 is a schematic structural view of the working state of the sampling inner tube of the sampling assembly of the second embodiment of the anhydrous hydrogen fluoride fully-automatic preparation device according to the embodiment of the present application;
fig. 6 is a schematic diagram of a linkage structure and a connection structure of a folding tube body of a second embodiment of a full-automatic anhydrous hydrogen fluoride preparation device according to an embodiment of the present application.
Reference numerals illustrate:
1. sampling an outer tube; 2. sampling an inner tube; 3. a driving structure; 5. a flange; 6. an elbow; 7. a linkage structure;
101. a first connection end; 102. a second connection end; 103. a ring plate; 104. an umbrella-shaped cylinder; 105. a slide block;
201. fixing the inner tube; 202. a driving pipe body; 203. a sampling tube body; 204. a limit part; 205. folding the tube body;
301. the driving part takes over; 302. a driving section; 303. a driving bevel gear; 304. a driven bevel gear;
401. a first sealing part; 402. a second sealing part;
701. a linkage rod; 702. a linkage rod rotating shaft; 703. a fixed rod; 704. and a connecting rod.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
See fig. 1 to 4;
the full-automatic anhydrous hydrogen fluoride preparation device is provided with a sampling bottle and a sampling valve connected with the sampling bottle, wherein the sampling valve is communicated with the sampling bottle through a sampling assembly so as to realize sampling of anhydrous hydrogen fluoride;
the sampling assembly includes:
a sampling outer tube 1 connected with a sampling valve; and a sampling inner tube 2 integrated inside the sampling outer tube 1;
the sampling inner tube 2 is configured as a sleeve structure that is partially movable to effect axial movement along the sampling outer tube 1;
the movable portion of the sampling inner tube 2 is movable in the axial direction of the sampling outer tube 1 and extends to the outside of the sampling outer tube 1 to form a sampling end;
the movable portion of the sampling inner tube 2 can be moved in the axial direction of the sampling outer tube 1 to be sealingly received inside the sampling outer tube 1.
Specifically, this embodiment discloses a full-automatic preparation facilities of anhydrous hydrogen fluoride, and it mainly relates to anhydrous hydrogen fluoride's sampling system, promptly the connection of sample bottle and sampling valve. This embodiment has designed the sample subassembly that can adjust the state according to the behavior between sample bottle and sample valve. The sampling assembly of this embodiment mainly includes sample outer tube 1 and sample inner tube 2, sample inner tube 2 cover is located inside the sample outer tube 1, simultaneously, in order to realize adjusting, this sample inner tube 2 can follow its axial displacement for sample outer tube 1, when the part of sample inner tube 2 extends to the outside of sample outer tube 1 like this, then regard as the sampling end to the outside one end that extends, the sampling end of sample inner tube 2 extends to in the sample bottle, and utilize sample outer tube 1 and necessary connecting piece to realize necessary sealing connection as the connection structure of sample bottle and sample outer tube 1, adjust the extension length of sample inner tube 2 in order to accomplish the sample operation. Then, when the sampling end is required to be withdrawn after sampling, the inner sampling tube 2 is moved in the opposite direction and gradually stored into the outer sampling tube 1.
Preferably, one end of the sampling outer tube 1 of the present embodiment is configured as a first connection end 101 connected to a sampling valve, and the other end of the sampling outer tube 1 is configured as a second connection end 102 connected to a sampling bottle;
the first connecting end 101 is connected with the sampling valve through a flange 5;
the sampling inner tube 2 is divided into:
a fixed inner tube 201 and a movable inner tube;
the fixed inner tube 201 and the sampling outer tube 1 are connected to the first connecting end 101, and the other end of the fixed inner tube 201 extends into the sampling outer tube 1;
the movable inner tube portion is embedded inside the fixed inner tube 201, and the movable inner tube can be moved in the axial direction of the fixed inner tube 201 to adjust the position of the movable inner tube with respect to the second connection end 102.
Wherein the fixed inner tube 201 and the sampling outer tube 1 are welded and fixed through the annular plate 103;
the flange 5 is welded at the ring plate 103, and when the sampling outer tube 1 is connected with the sampling valve through the flange 5, the fixed inner tube 201 is communicated with the sampling valve.
First, the first connection end 101 of the sampling tube 1 is a position to be connected to a sampling valve, and the second connection end 102 is an end to be connected to a sampling bottle. For the connection, the end connected to the sampling valve can be directly flanged 5. The second connection end 102 is not limited to a connection with the sample bottle, but can be directly connected without other pipe fittings; the flange 5 can be used for realizing the butt joint with the sampling bottle 5, and even a pipe clamp can be used as a temporary connecting part after the butt joint.
Next, the present embodiment further defines the composition of the sampling inner tube 2, which is divided into two main parts, namely, a fixed part and a movable part, wherein the fixed part is the fixed inner tube 201, and the movable part is the movable inner tube; while the fixed inner tube 201 is welded and fixed with the sampling outer tube 1 by the ring plate 103, the fixed inner tube
The pipe 201 is used as a sliding guiding part of the movable inner pipe, one end of the annular plate 103 of the fixed inner pipe 201 is used as a first connecting end 101, a flange 5 is welded at the position, and the specification of the flange 5 is matched with that of the fixed inner pipe 201 so as to realize the communication with the sampling valve. While the movable inner tube passes through the fixed inner tube 201 and is movable in its axial direction.
More preferably:
the movable inner tube of this embodiment includes:
a driving pipe body 202 near one side of the fixed inner pipe 201; and 5 a sampling tube body 203 connected to the driving tube body 202 and located near the second connection end 102; the sampling outer tube 1 is integrated with a driving structure 3, and the driving end of the driving structure 3 extends into the sampling outer tube 1 to drive the driving tube 202 to move along the axial direction of the fixed inner tube 201 and drive the sampling tube 1 to move.
The movable inner tube is divided into two parts, one part is a driving tube 202,0 matched with the driving structure 3, and the other part is a sampling tube 203 driven to move by the driving tube 202. The driving structure 3 acts
The distance that the tube body 203 moves by driving the tube body 202 is the distance that the sampling tube body 203 moves,
the extension or retraction of the sampling tube body 203 from or into the sampling outer tube 1 is also controlled in this manner.
It should be noted that, in consideration of the driving problem, the movable inner tube of the present embodiment is configured in a structure in which at least the driving tube 202 is a straight tube; since the driving structure 3 is required to drive the movable inner tube to move 5, that is, to drive the driving tube 202 to move, accidents can be avoided in the use process by matching the driving structure 3 in a straight tube mode, and the tail end sampling tube 203 does not have the requirement of the straight tube, that is, the driving tube 202 of the embodiment needs to adopt a straight tube, and the material is preferably a tube with a certain rigidity, such as a steel tube; the sampling tube 203 can be designed into a bent tube or other forms according to the position and connection requirements of the actual sampling bottle. Similarly, the sampling outer tube 1 of the present embodiment may also be configured to have a bent tube at a necessary position according to the position of the sampling bottle and the connection manner of the downstream end device of the process to arrange the pipeline trend.
Wherein, the driving tube 202 of the embodiment is located in the fixed inner tube 201 near one end portion of the fixed inner tube 201, and a first sealing portion 401 is provided on the inner ring of the fixed inner tube 201;
the end of the driving tube 202 embedded into one end of the fixed inner tube 201 is formed into a limiting portion 204 protruding outwards, the outer wall of the driving tube 202 is matched with the inner diameter of the first sealing portion 401 to form interference fit or clearance fit, and the outer diameter of the limiting portion 204 of the driving tube 202 is larger than the inner diameter of the first sealing portion 401.
The driving pipe 202 is movably connected with the fixed inner pipe 201, and the sealing is realized by the first sealing portion 401, and the limiting portion 204 is designed to prevent the driving pipe 202 from transitionally moving and separating from the fixed inner pipe 201.
The present embodiment is further explained and illustrated with a structure capable of realizing the movement of the driving pipe 202, and the driving structure 3 of the present embodiment includes:
a driven bevel gear 304 located at the outer periphery of the driving pipe 202;
a driving bevel gear 303 engaged with the driven bevel gear 304 to drive the driven bevel gear 304 to rotate; and
a driving section 302 located outside the sampling outer tube 1;
a driving part connecting pipe 301 is arranged between the driving part 302 and the sampling outer pipe 1, the driving part 302 penetrates through the driving part connecting pipe 301 and extends into the sampling outer pipe 1, and one end of the driving part 302 extending into the sampling outer pipe 1 is connected with a driving bevel gear 303 to drive the driving bevel gear 303 to rotate; the inner ring of the driven bevel gear 304 is provided with internal threads, and the periphery of the driving pipe 202 is provided with external threads matched with the internal threads; the driven bevel gear 304 converts the rotational motion of the driven bevel gear 304 into a linear motion of the drive tube 202 by a mating of internal and external threads, preferably a ball screw type mating.
When the driving pipe 202 is driven to move in a gear transmission mode, the external driving part 302 can be a hand wheel or a motor, the driving part 302 is connected with the sampling outer pipe 1 through the driving part connecting pipe 301, and in order to ensure sealing, a mechanical seal (not shown) can be selected, so that the normal operation of the driving part 302 is ensured, and the sealing performance is improved; in addition, the driving part 302 drives the driven bevel gear 304 to rotate through the driving bevel gear 303, and finally, the movement of the driving pipe 202 is realized, in order to avoid the horizontal movement of the driven bevel gear 304 in the design, a bearing connected with the driven bevel gear 304 can be designed in the sampling outer pipe 1, an annular protruding cylinder is arranged on the driven bevel gear 304 and fixedly connected to the inner ring of the bearing, and the outer ring of the bearing is fixedly connected to the sampling outer pipe 1, so that the position of the driven bevel gear 304 is kept through the bearing, and only the rotation movement is realized. It should be noted that if a bearing is installed as the connection, it is necessary to ensure that the drive tube is only connected to the driven bevel gear 304, not to the bearing, and is equipped with the necessary bearing seal.
As a portion connected to the sampling tube body 203, a second sealing portion 402 is provided inside the sampling outer tube 1 of the present embodiment on the side of the second connection portion 102;
the outer diameter of the movable inner tube matches the inner diameter of the second seal 402 and passes through the second seal 402 and is an interference fit or clearance fit with the second seal 402.
The moving distance of the sampling tube 203 corresponds to the length of the acting part of the driving structure 3 and the driving tube 202, that is, a part of external thread area is arranged on the driving tube 202, and the driving structure 3 controls the moving distance of the movable inner tube through the length of the area. Generally, in the design, when the device is in a storage state, the driving structure 3 drives the movable inner tube to move towards the inner side of the sampling outer tube 1, and finally the end part of the driving tube 202 is close to the first connecting end 101; when the driving structure 3 drives the movable inner tube to move towards the outer side of the sampling outer tube 1, the limiting part 204 of the driving tube 202 contacts the first sealing part 401 to reach the maximum extension length. Therefore, the length of the second sealing part 402 described above may be designed according to the length of the fixed inner tube 201. This ensures that the end of the sampling tube 203 is also positioned inside the second seal 402 when it is in the stored state. Finally, the second connecting portion 402 can be closed by using the blind plate to avoid volatilization at the end of the sampling outer tube 203 in the maintenance state, so that the safety is further improved.
As an extended embodiment:
one end of the driving tube 202, which is close to the fixed inner tube 201, is transited through a deformable folding tube 205, that is, the folding tube 205 is connected between the driving tube 202 and the sampling outer tube 203;
a passive linkage structure 7 for driving the folding pipe body 205 to be unfolded or folded and stored is arranged between the fixed inner pipe 201 and the driving pipe body 202;
when the driving structure 3 drives the movable inner tube to move towards one side outside the sampling outer tube 1, the linkage structure 7 drives the folding tube 205 to be unfolded so as to form a straight tube structure;
when the driving structure 3 drives the movable inner tube to move towards one side inside the sampling outer tube 1, the linkage structure 7 drives the folding tube 205 to fold and store so as to form a folding structure.
Specifically, the linkage structure 7 of the present embodiment includes:
a plurality of groups of linkage rods 701 are uniformly distributed along the circumference of the folding pipe body 205, each group of linkage rods 701 is provided with two linkage rods 701 which are rotationally connected through a linkage rod rotating shaft 702, the linkage rod rotating shaft 702 is in sliding connection with a sliding groove formed in an umbrella-shaped barrel 104 arranged on the inner wall of the sampling outer pipe 1 through a fixed rod 703, the umbrella-shaped barrel 104 is of a frustum-shaped structure, one end of the fixed rod 703 matched with the sliding groove is provided with a sliding block 105, and the sliding block 105 is in sliding connection with the sliding groove;
at least two ends of the linkage rod 701 are connected with the folding pipe body 205 through a connecting rod 704 to drive the corresponding part of the folding pipe body 205 to synchronously move.
Next, in order to enable the folding tube 205 to be driven to be unfolded and stored as required by the link lever 701 and the fixing lever 703, the umbrella-shaped tube 104 of the present embodiment is configured in such a manner that the cross-sectional dimension gradually decreases from the side away from the second connection end 102 to the side close to the second connection end 102. A chute capable of being inclined inward toward the outer side of the sampling tube 1 is formed at a position where the corresponding fixing rod 703 is engaged by the umbrella-shaped tube 104.
In order to further improve the safety during sampling, the folding tube 205 is designed between the fixed inner tube 201 and the driving tube 202, and when the movable inner tube moves towards one side outside the sampling outer tube 1 through the driving of the folding tube 205 by the linkage structure 7, the folding tube 205 can be driven to be unfolded by the linkage structure 7, and in the unfolding process, the movable inner tube has a distance of moving outwards along the axial direction due to the existence of the linkage rod 701, the fixed rod 703 and the umbrella-shaped tube 104, the space inside the folding tube 205 becomes smaller in the process, and an outwards airflow blow can be generated in the tube body during the unfolding process of the folding tube 205, and the airflow blow can drive the liquid in the tube body to be discharged outwards; conversely, when the linkage structure 7 drives the folding tube 205 to fold and store, an outward air flow pumping force is formed in the tube, and after sampling, the pumping force is used to drive the liquid in the tube to move continuously, so that the liquid is further prevented from dripping outside. And because of the umbrella-shaped tube 104 fixed on the inner wall of the sampling outer tube 1, the matching position of the umbrella-shaped tube 104, the fixed rod 703 and the sliding block 105 is utilized to form a sliding groove, the sliding groove is formed along the extending track of the body of the umbrella-shaped tube to form an inclined sliding groove, so that the fixed rod 703 is utilized to form stretching traction pushing on the linkage rod 701, so that the linkage rod 701 is driven to fold outwards or unfold inwards, and the folding tube 205 is driven to fold or unfold. More specifically, during sampling, the fixing rod 703 is located in the middle of the umbrella barrel 104, after sampling is finished, the valve is closed, then the driving pipe 202 is driven to move outwards continuously, the fixing rod 703 moves from the middle of the umbrella barrel 104 to the end of the umbrella barrel 104 far away from the flange (5), at this time, as the folded pipe 205 gradually changes from the outer unfolded state to the horizontal state, and even becomes an inward bent V-state, in a preferred embodiment, through reasonable sizing and matching, at this time, even the pipeline in the middle of the folded pipe 205 can be forced to be directly closed by two groups of fixing rods 703, the process provides an outward airflow force, the driving pipe 202 and the residual sample in the sampling outer pipe 203 are extruded, then, possibly, a very small amount of sample is still contained in the sampling pipe, at this time, the driving pipe 202 is pulled back, so that the fixing rod 703 moves from the end of the umbrella barrel 104 far away from the flange (5) to the end close to the flange (5), at this time, a suction force is generated, a very small amount of residual sample is sucked back into the folded pipe 205, the folded pipe 205 forms a bent structure, at this time, the pipeline in the middle of the folded pipe 205 can be conveniently pushed by using the suction force, the small amount of sample can be contained in the sample, and the sample can be contained in the sample can be conveniently and the sample can be pushed down by the sample in the folded pipe.
In a preferred embodiment, a sealing plate (not shown in the drawings) is rotatably connected to the outer side of the second sealing portion 402 through a rotating shaft and a torsion spring, when the sampling outer tube 1 is retracted into the second sealing portion 402, under the action of the torsion spring, the sealing plate is attached to the opening of the second sealing portion 402 to realize the sealing of the sampling outer tube 1, and when the sampling outer tube 1 extends out, the sealing plate is directly extruded by virtue of extrusion force, which is a common unidirectional valve plate structure in the prior art and is not described in detail.
In the technical scheme, the full-automatic anhydrous hydrogen fluoride preparation device provided by the application has the following beneficial effects:
the device adopts a telescopic sampling tube structure formed by a sampling outer tube 1 and a sampling inner tube 2, and the sampling inner tube 2 adjusts the position of a sampling end by the axial movement of a movable inner tube so as to finish the sampling operation of penetrating into a sampling bottle or to be stored into a storage state in the sampling outer tube 1; the movement of the movable inner tube is driven by the driving structure 3, so that the volatilization of anhydrous hydrogen fluoride caused by the exposure of the sampling inner tube to the outside is avoided, the safety is improved, and better tightness is realized.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (5)
1. The full-automatic anhydrous hydrogen fluoride preparation device is provided with a sampling bottle and a sampling valve connected with the sampling bottle, and is characterized in that the sampling valve is communicated with the sampling bottle through a sampling assembly to realize the sampling of the anhydrous hydrogen fluoride;
the sampling assembly comprises a sampling outer tube (1) connected with the sampling valve and a sampling inner tube (2) integrated inside the sampling outer tube (1);
-the sampling inner tube (2) is configured to be partly mobile to realize a sleeve structure moving axially along the sampling outer tube (1);
the movable part of the sampling inner tube (2) can move along the axial direction of the sampling outer tube (1) and extend to the outside of the sampling outer tube (1) to form a sampling end;
the movable part of the sampling inner tube (2) can move along the axial direction of the sampling outer tube (1) so as to be hermetically contained inside the sampling outer tube (1);
one end of the sampling outer tube (1) is configured as a first connecting end (101) connected with a sampling valve, and the other end of the sampling outer tube (1) is configured as a second connecting end (102) connected with the sampling bottle;
the first connecting end (101) is connected with the sampling valve through a flange (5);
the sampling inner tube (2) is divided into:
a fixed inner tube (201) and a movable inner tube;
the fixed inner tube (201) and the sampling outer tube (1) are connected to the first connecting end (101), and the other end of the fixed inner tube (201) extends to the inside of the sampling outer tube (1);
the movable inner tube is partially embedded inside the fixed inner tube (201) and can move along the axial direction of the fixed inner tube (201) so as to adjust the position of the movable inner tube relative to the second connecting end (102);
the movable inner tube includes:
a driving pipe body (202) near one side of the fixed inner pipe (201); and
a sampling tube body (203) connected with the driving tube body (202) and close to one side of the second connecting end (102);
a driving structure (3) is integrated on the sampling outer tube (1), and the driving end of the driving structure (3) extends into the sampling outer tube (1) to drive the driving tube body (202) to move along the axial direction of the fixed inner tube (201) and drive the sampling tube body (203) to move;
the movable inner tube is configured to have a straight tube structure of at least the driving tube body (202);
the driving pipe body (202) is positioned in the fixed inner pipe (201) near one end part of the fixed inner pipe (201), and a first sealing part (401) is arranged at the inner ring of the fixed inner pipe (201);
the end part of the driving pipe body (202) embedded into one end of the fixed inner pipe (201) protrudes outwards to form a limiting part (204), the outer wall of the driving pipe body (202) is matched with the inner diameter of the first sealing part (401) to form interference fit or clearance fit, and the outer diameter of the limiting part (204) of the driving pipe body (202) is larger than the inner diameter of the first sealing part (401);
one end of the driving pipe body (202) close to the fixed inner pipe (201) is transited through a folding pipe body (205);
a linkage structure (7) for driving the folding pipe body (205) to unfold or fold and store is arranged between the fixed inner pipe (201) and the driving pipe body (202);
when the driving structure (3) drives the movable inner tube to move towards one side outside the sampling outer tube (1), the linkage structure (7) drives the folding tube body (205) to be unfolded to form a straight tube structure;
when the driving structure (3) drives the movable inner tube to move towards one side in the sampling outer tube (1), the linkage structure (7) drives the folding tube body (205) to fold and store so as to form a folding structure;
the linkage structure (7) comprises:
a plurality of groups of linkage rods (701) are circumferentially and uniformly distributed along the folding pipe body (205), each group of linkage rods (701) is provided with two linkage rods (701) which are rotationally connected through a linkage rod rotating shaft (702), the linkage rod rotating shaft (702) is in sliding connection with a sliding groove formed in an umbrella-shaped barrel (104) arranged on the inner wall of the sampling outer pipe (1) through a fixed rod (703), and one end of the fixed rod (703) matched with the sliding groove is provided with a sliding block (105);
at least two ends of the linkage rod (701) are connected with the folding pipe body (205) through a connecting rod (704) so as to drive the corresponding part of the folding pipe body (205) to synchronously move.
2. The full-automatic anhydrous hydrogen fluoride preparation device according to claim 1, wherein the fixed inner tube (201) and the sampling outer tube (1) are welded and fixed by a ring plate (103);
the flange (5) is welded at the annular plate (103), and when the sampling outer tube (1) is connected with the sampling valve through the flange (5), the fixed inner tube (201) is communicated with the sampling valve.
3. The full-automatic anhydrous hydrogen fluoride production apparatus according to claim 1, wherein the driving structure (3) comprises:
a driven bevel gear (304) positioned at the periphery of the driving pipe body (202);
a driving bevel gear (303) engaged with the driven bevel gear (304) to drive the driven bevel gear (304) to rotate; and
a driving part (302) positioned outside the sampling outer tube (1);
a driving part connecting pipe (301) is arranged between the driving part (302) and the sampling outer pipe (1), the driving part (302) penetrates through the driving part connecting pipe (301) and extends into the sampling outer pipe (1), and one end of the driving part (302) extending into the sampling outer pipe (1) is connected with the driving bevel gear (303) to drive the driving bevel gear (303) to rotate;
the inner ring of the driven bevel gear (304) is provided with an internal thread, and the periphery of the driving pipe body (202) is provided with an external thread matched with the internal thread;
the driven bevel gear (304) converts the rotary motion of the driven bevel gear (304) into the linear motion of the driving tube body (202) through the cooperation of the internal thread and the external thread.
4. The full-automatic anhydrous hydrogen fluoride production device according to claim 3, wherein a second sealing part (402) is provided inside the second connecting part (102) side of the sampling outer tube (1);
the outer diameter of the movable inner tube is matched with the inner diameter of the second sealing part (402), passes through the second sealing part (402) and is in interference fit or clearance fit with the second sealing part (402).
5. The full-automatic anhydrous hydrogen fluoride production apparatus according to claim 1, wherein the umbrella-shaped tube (104) is configured in a structure in which a cross-sectional dimension gradually decreases from a side away from the second connection end (102) to a side close to the second connection end (102).
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| CN202211723204.9A CN116099583B (en) | 2022-12-30 | 2022-12-30 | Full-automatic anhydrous hydrogen fluoride preparation device |
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| CN202211723204.9A CN116099583B (en) | 2022-12-30 | 2022-12-30 | Full-automatic anhydrous hydrogen fluoride preparation device |
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| CN116099583B true CN116099583B (en) | 2023-12-08 |
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