CN102768205B - Connection device of inductively coupled plasma (ICP) spectrometer atomizing chamber and torch tube and using method of connection device - Google Patents
Connection device of inductively coupled plasma (ICP) spectrometer atomizing chamber and torch tube and using method of connection device Download PDFInfo
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- CN102768205B CN102768205B CN201210273553.5A CN201210273553A CN102768205B CN 102768205 B CN102768205 B CN 102768205B CN 201210273553 A CN201210273553 A CN 201210273553A CN 102768205 B CN102768205 B CN 102768205B
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Abstract
The invention relates to a connection device of an inductively coupled plasma (ICP) spectrometer atomizing chamber and a torch tube and a using method of the connection device. The connection device comprises a connection body and two sealing rings, wherein a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity and a sixth cavity are sequentially arranged in the connection body. The inner diameter of the second cavity, the inner diameter of the fourth cavity and the inner diameter of the sixth cavity is the same as the outer diameter of a liquid outlet tube of the atomizing chamber, the inner diameter of the first cavity is the same as the outer diameter of the torch tube, the inner diameters of the third cavity and the fifth cavity are larger than the inner cavity of the second cavity, and the two sealing rings are respectively arranged in the third cavity and the fifth cavity. The connection device of the ICP spectrometer atomizing chamber and the torch tube has the advantages that an original line contact mode is replaced by a surface contact mode, so that the contact area of connection parts is enlarged, the friction force is increased, a perfect sealing system is established, and normal operation of follow-up ignition analysis work is ensured. The using method of the connection device is simple and convenient.
Description
Technical field
The present invention relates to inductively coupled plasma (Inductive Coupled Plasma, ICP) technical field, particularly relate to the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, and the using method of this device.
Background technology
Since First commodity ICP spectrometer in 1975 is born, experienced constantly improvement and bring new ideas, ICP spectrometer detects application technology development and perfect.ICP spectrometer has following characteristics: (1) can carry out multielement analysis rapidly simultaneously, and in periodic table, nearly 73 kinds of elements all can measure; (2) measure and sensitively read higher, comprise the element easily forming refractory oxides, detection limit can reach every milliliter of Gamma Magnitude; (3) matrix effect is lower, more easily sets up analytical approach; (4) typical curve has wider linear dynamic range; (5) there is good precision and repeatability.Just based on above feature, ICP spectrometer has now been widely used in the sample analysis of each field such as geology, metallurgy, rare earth and magnetic material, environment, medical and health, biology, ocean, oil, New Chemical Materials, nuclear industry, agricultural, food commodity inspection, water quality and subject.At present, ICP spectrometer is primarily of part compositions such as radio-frequency generator, light-dividing device and pick-up units, and radio-frequency generator is the core component of ICP spectrometer.Radio-frequency generator mainly comprises high frequency electric source, sampling device and plasma torch pipe.Sampling device is made up of atomizer and spray chamber and corresponding supply air line usually, after liquor sample is atomized into gasoloid in spray chamber, is loaded into the annular center of the plasma of quarter bend by argon gas.
At present, because the caliber of the drain pipe of the spray chamber of ICP generator is comparatively large, and the caliber of quarter bend is less, therefore both need be communicated with by a coupling arrangement and sealed.Current coupling arrangement is by accommodating two the O shapes circle within it chamber, there is friction force, therefore can fix drain pipe thus realize sealing between two O shapes circles and drain pipe.But after the drain pipe of spray chamber inserts the inner chamber of this coupling arrangement, because two O shapes circles are linear contact lay with the way of contact of drain pipe, friction force is less, easily causes drain pipe to loosen, and then affects the sealing of ICP generator, causes loss of ignition.This kind of situation easily occurs in the ICP spray chamber of hydrofluoric acid resistant, because this spray chamber uses special resistant material to make, density ratio is larger, volume is also large compared with glass atomization room, heavier mass, so often occur connecting not tight situation, causes air to enter in the inner chamber of coupling arrangement.
Summary of the invention
Technical matters to be solved by this invention is to provide the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, this coupling arrangement improves the sealing means of O shape circle in the past: instead of original linear contact lay form with face contact form, increase the contact area of link, increase friction force, and then set up perfect sealing system, guarantee normally carrying out of follow-up igniting analytical work; The present invention also provides the using method of the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, and this using method is simple, convenient, makes the good sealing effect of spray chamber and torch pipe.
The technical solution adopted in the present invention is: the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, it includes and connects body and 2 O-ring seals, the first cavity, the second cavity, the 3rd cavity, the 4th cavity, the 5th cavity and the 6th cavity is provided with successively in described connection body, the second described cavity, the 4th cavity are identical with the external diameter of the drain pipe of spray chamber with the internal diameter of the 6th cavity, the internal diameter of the first described cavity is identical with the external diameter of quarter bend, and the 3rd described cavity and the internal diameter of the 5th cavity are greater than the internal diameter of the second cavity; 2 described O-ring seals are placed in the 3rd cavity and the 5th cavity respectively.
By such scheme, described O-ring seal includes hollow round table and the sealing matrix in annulus, the external diameter of the upper surface of described hollow round table is less than the external diameter of the lower surface of hollow round table, and the base of the lower surface of described hollow round table is connected with the medial surface of sealing matrix.
By such scheme, the diameter of the lower surface of described hollow round table is between the minimum diameter and the annulus central diameter of sealing matrix of sealing matrix, and the size of the annulus central diameter of described sealing matrix is that the external diameter sealing matrix deducts the thickness sealing matrix.
By such scheme, diameter=(the annulus central diameter of the minimum diameter+sealing matrix of sealing matrix)/2 of the lower surface of described hollow round table, the size of the annulus central diameter of described sealing matrix is that the external diameter sealing matrix deducts the thickness sealing matrix.
By such scheme, the height between the upper surface of described hollow round table and the upper surface of sealing matrix is less than the height of the second cavity being connected body.
By such scheme, described O-ring seal is made up of resilient material.
The present invention also provides the using method of the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, specifically comprise the steps: first two O-ring seals to be separately fixed on the inwall of the 3rd cavity and the 5th cavity, make the hollow round table of O-ring seal be to the direction of quarter bend by the drain pipe of spray chamber by lower surface to the direction of upper surface; Then the drain pipe of spray chamber is entered by the 6th cavity, until in the second cavity; Subsequently quarter bend is inserted in the first cavity, thus the sealing of the drain pipe and quarter bend that realize spray chamber is communicated with.
Beneficial effect of the present invention is: this coupling arrangement instead of original linear contact lay form with face contact form, increase the contact area of link, increase friction force, and then set up perfect sealing system, guarantee normally carrying out of follow-up igniting analytical work.The method is simple, convenient, and spray chamber and torch pipe can be made to carry out extraordinary sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the coupling arrangement of spectrometer spray chamber of the present invention and torch pipe.
Fig. 2 is the structural representation of O-ring seal of the present invention.
Fig. 3 is the assembling schematic diagram of spray chamber, torch pipe and coupling arrangement.
In figure: 10, connect body, the 11, first cavity, the 12, second cavity, 13, the 3rd cavity, the 14, the 4th cavity, the 15, the 5th cavity, 16, the 6th cavity, 20, O-ring seal, 22, sealing matrix, 24, hollow round table, 26, upper surface, 28, lower surface, R1, minimum diameter, R2, annulus central diameter, 30, quarter bend, 40, spray chamber.
Embodiment
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
See Fig. 1, Fig. 2 and Fig. 3, the coupling arrangement of a kind of ICP spectrometer spray chamber and torch pipe, it includes and connects body 10 and 2 O-ring seals 20, the first cavity 11 is provided with successively in described connection body 10, second cavity 12, 3rd cavity 13, 4th cavity 14, 5th cavity 15 and the 6th cavity 16, the second described cavity 12, 4th cavity 14 is identical with the external diameter of the drain pipe of spray chamber 40 with the internal diameter of the 6th cavity 16, the internal diameter of the first described cavity 11 is identical with the external diameter of quarter bend 30, the 3rd described cavity 13 and the internal diameter of the 5th cavity 15 are greater than the internal diameter of the second cavity 12, 2 described O-ring seals 20 are placed in the 3rd cavity 13 and the 5th cavity 15 respectively.Described O-ring seal 20 includes hollow round table 24 and the sealing matrix 22 in annulus, the external diameter of the upper surface 26 of described hollow round table 24 is less than the external diameter of the lower surface 28 of hollow round table 24, and the base of the lower surface 28 of described hollow round table 24 is connected with the medial surface of sealing matrix 22; Height between the upper surface of sealing matrix 22 and the upper surface 26 of hollow round table 24 is less than the height of the second cavity 12 being connected body 10.
In the present embodiment, described hollow round table 24 and sealing matrix can be one-body molded, and the modes such as bonding also can be adopted to connect.The diameter of the lower surface 28 of described hollow round table 24 between the minimum diameter R1 and the annulus central diameter R2 of sealing matrix 22 of sealing matrix 22, preferably: diameter=(the minimum diameter R1+ of sealing matrix 22 seals the annulus central diameter R2 of matrix 22)/2 of the lower surface 28 of hollow round table 24.Described annulus central diameter R2=seals the thickness of the external diameter-sealing matrix of matrix.
As shown in figures 1 and 3, connecting body 10 is hollow, and the cavity of this hollow is followed successively by the first cavity 11, second cavity 12, the 3rd cavity 13, the 4th cavity 14, the 5th cavity 15 and the 6th cavity 16 from the direction of quarter bend 30 to spray chamber 40.First cavity 11 is for holding quarter bend 30.The internal diameter of the second cavity 12, the 4th cavity 14 and the 6th cavity 16 is equal, and this internal diameter is equal with the external diameter of the drain pipe of spray chamber 40.The internal diameter of the 3rd cavity 13 and the 5th cavity 15 is greater than the internal diameter of the second cavity 12, the 4th cavity 14 or the 6th cavity 16, and the 3rd described cavity 13 and the 5th cavity 15 are respectively used to accommodation two O-ring seals 20.The material of O-ring seal 20 is selected from resilient material, as comparatively conventional fluorine glue, butadiene-acrylonitrile rubber, silica gel etc.
As shown in Figure 2, O-ring seal 20 comprises sealing matrix 22 and hollow round table 24, and sealing matrix 22 be circular, cross section is circle; Hollow round table 24 is extended towards the internal diameter direction sealing matrix 22 from the inwall of sealing matrix 22.The minimum diameter of setting sealing matrix 22 is R1, and annulus central diameter is R2; The diameter of the lower surface 28 of this hollow round table 24 be in the inwall defined between the annulus central diameter R2 of sealing matrix 22 and minimum diameter R1 around space in.The diameter of the upper surface 26 of this hollow round table 24 is less than the diameter of lower surface 28.The external diameter of the lower surface 28 of this hollow round table 24, between annulus central diameter R2 and minimum diameter R1, is preferably (annulus central diameter R2+ minimum diameter R1)/2.Distance between the upper surface 26 of this hollow round table 24 and the upper surface of sealing matrix 22 is less than the height of the second cavity 12.Described annulus central diameter R2=seals the thickness of the external diameter-sealing matrix of matrix.
During use, first two O-ring seals 20 are fixed to the inwall of the 3rd cavity 13 and the 5th cavity 15, keep the hollow round table 24 of O-ring seal 20 to be to the direction of quarter bend 30 by the drain pipe of spray chamber 40 by the direction of lower surface 28 to upper surface 26.Then the drain pipe of spray chamber 40 is entered by the 6th cavity 16, until the second cavity 12, then quarter bend 30 is inserted into the first cavity 11, thus the drain pipe realizing spray chamber is communicated with the sealing of quarter bend 30.Because the hollow round table 24 of two O-ring seals 20 starts from upper surface 26, understand the outer wall forming surface way of contact of some inwall and drain pipe, and the minimum diameter place of the sealing matrix 22 of O-ring seal 20 forms linear contact lay with the outer wall of drain pipe simultaneously, multiple friction force causes drain pipe and O-ring seal 20 close contact.Again because existing quarter bend 30 is pass through seal with O ring with the sealing being connected body 10, and gentlier there will not be loosening due to quarter bend 30, therefore do not affect overall sealing, the external diameter of quarter bend 30 equals the internal diameter of the first cavity 11 in addition, the external diameter of drain pipe equals the internal diameter of the second cavity 12, after drain pipe is fixed by two O-ring seals 20, its upper surface contacts with the lower surface of quarter bend, therefore form a confined space between the two, as long as go out liquid line not loosen, be just confined space between the two, sealing effectiveness is very good always.Therefore, and then set up perfect sealing system, the phenomenon avoiding loss of ignition occurs.
Claims (4)
1. the coupling arrangement of an ICP spectrometer spray chamber and torch pipe, it is characterized in that: it includes and connects body and 2 O-ring seals, the first cavity, the second cavity, the 3rd cavity, the 4th cavity, the 5th cavity and the 6th cavity is provided with successively in described connection body, the second described cavity, the 4th cavity are identical with the external diameter of the drain pipe of spray chamber with the internal diameter of the 6th cavity, the internal diameter of the first described cavity is identical with the external diameter of quarter bend, and the 3rd described cavity and the internal diameter of the 5th cavity are greater than the internal diameter of the second cavity, 2 described O-ring seals are placed in the 3rd cavity and the 5th cavity respectively, described O-ring seal includes hollow round table and the sealing matrix in annulus, the external diameter of the upper surface of described hollow round table is less than the external diameter of the lower surface of hollow round table, the base of the lower surface of described hollow round table is connected with the medial surface of sealing matrix, the diameter of the lower surface of described hollow round table is between the minimum diameter and the annulus central diameter of sealing matrix of sealing matrix, the size of the annulus central diameter of described sealing matrix is that the external diameter sealing matrix deducts the thickness sealing matrix, diameter=(the annulus central diameter of the minimum diameter+sealing matrix of sealing matrix)/2 of the lower surface of described hollow round table, the size of the annulus central diameter of described sealing matrix is that the external diameter sealing matrix deducts the thickness sealing matrix.
2. the coupling arrangement of ICP spectrometer spray chamber as claimed in claim 1 and torch pipe, is characterized in that: the height between the upper surface of described hollow round table and the upper surface of sealing matrix is less than the height of the second cavity being connected body.
3. the coupling arrangement of ICP spectrometer spray chamber as claimed in claim 1 and torch pipe, is characterized in that: described O-ring seal is made up of resilient material.
4. the using method of the ICP spectrometer spray chamber according to any one of claim 1-3 and the coupling arrangement of torch pipe, it is characterized in that: comprise the steps: first two O-ring seals to be separately fixed on the inwall of the 3rd cavity and the 5th cavity, make the hollow round table of O-ring seal be to the direction of quarter bend by the drain pipe of spray chamber by lower surface to the direction of upper surface; Then the drain pipe of spray chamber is entered by the 6th cavity, until in the second cavity; Subsequently quarter bend is inserted in the first cavity, thus the sealing of the drain pipe and quarter bend that realize spray chamber is communicated with.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210273553.5A CN102768205B (en) | 2012-08-03 | 2012-08-03 | Connection device of inductively coupled plasma (ICP) spectrometer atomizing chamber and torch tube and using method of connection device |
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| CN201210273553.5A CN102768205B (en) | 2012-08-03 | 2012-08-03 | Connection device of inductively coupled plasma (ICP) spectrometer atomizing chamber and torch tube and using method of connection device |
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| Publication Number | Publication Date |
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| CN102768205A CN102768205A (en) | 2012-11-07 |
| CN102768205B true CN102768205B (en) | 2015-01-07 |
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| CN201210273553.5A Expired - Fee Related CN102768205B (en) | 2012-08-03 | 2012-08-03 | Connection device of inductively coupled plasma (ICP) spectrometer atomizing chamber and torch tube and using method of connection device |
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| CN103353763B (en) * | 2013-06-08 | 2015-09-16 | 中国地质大学（武汉） | Three-dimensional mobile platform and apply its ICP torch pipe locating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2514344Y (en) * | 2001-12-27 | 2002-10-02 | 北京有色金属研究总院 | Induction coupled plasma mass spectrum sample feeding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2724541B2 (en) * | 1994-04-19 | 1998-03-09 | 日本ジャーレル・アッシュ株式会社 | ICP emission spectrometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2514344Y (en) * | 2001-12-27 | 2002-10-02 | 北京有色金属研究总院 | Induction coupled plasma mass spectrum sample feeding system |
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| JP特开平7-286960A 1995.10.31 * |
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Effective date of registration: 20170717 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
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