CN104269339B - Double-channel ion source spray head - Google Patents
Double-channel ion source spray head Download PDFInfo
- Publication number
- CN104269339B CN104269339B CN201410528042.2A CN201410528042A CN104269339B CN 104269339 B CN104269339 B CN 104269339B CN 201410528042 A CN201410528042 A CN 201410528042A CN 104269339 B CN104269339 B CN 104269339B
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- Prior art keywords
- overcoat
- head
- electrode
- spray point
- screw head
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/10—Ion sources; Ion guns
- H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission
- H01J49/168—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission field ionisation, e.g. corona discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a double-channel ion source spray head which comprises a spray point, an outer sleeve, a spray point screw head, an electrode, an electrode screw head, a high-voltage wire, an air inlet pipe and an air inlet pipe screw head. A central through hole is formed in the outer sleeve, the head of the spray point penetrates through a central threaded hole in the tail of the outer sleeve and stretches out until the tail of the head of the spray point is exposed out of the head of the outer sleeve by a certain distance, the tail of the spray point is sleeved with the spray point screw head, and thus the spray head is sealed and fixed. The high-voltage wire penetrates through an inner hole of the electrode screw head, the front end of the high-voltage wire is arranged in an inner hole of the tail of the electrode and is welded and fixed, and thus the electrode enters the inner hole of the electrode screw head. The electrode screw head is screwed in from the tail of the spray point screw head, and thus the electrode is attached to the end face of the tail of the spray point. The air inlet pipe is inserted into a side end threaded hole of the tail of the outer sleeve, and then the air inlet pipe screw head is screwed in the side end threaded hole of the tail of the outer sleeve. The double-channel ion source spray head is compact in structure and small in size, is mainly applied to surface desorption atmospheric pressure chemical ionization sources, and is especially suitable for small-scale direct mass spectrometry.
Description
Technical field
The present invention relates to a kind of ion source nozzle, particularly a kind of dual pathways ion source nozzle, it is mainly used in surface solution
Inhale atmospheric chemical ionization source, be particularly suited for small-sized direct mass spectral analyses.
Background technology
Surface desorption atmospheric chemical ionization (desorption atmospheric pressure chemical
Ionization, dapci) mass-spectrometric technique, be applied successfully to food medical and health, national defense safety, public safety and
The numerous areas such as mass spectrum imaging, also have important answering in fields such as space flight and aviation, environmental monitoring, catalytic chemistry, organic synthesiss
Use prospect.
Surface desorption atmospheric chemical ionization (dapci) technology produces primary ion as energy load using normal pressure corona discharge
Body, carries out energy charge transmission by gas-solid-gas or liquid-solid-gas three-phase, realizes the effectively ionized of surface of solids molecule.Therefore, fit
The shower nozzle producing primary ion for normal pressure corona discharge is the key of dapci technology.
However, not also being applied to the shower nozzle in dapci source in the market, existing ion source nozzle is mainly used in non-
The analytical technique of mass spectrum of dapci；And the shower nozzle in dapci source used in laboratory is often assembled by Stainless steel tee pipe joint
Form, structure is restricted, in-convenience in use, stability is not high, seriously limits the development of dapci mass-spectrometric technique.
Content of the invention
In order to overcome existing ion source nozzle not to be suitable for dapci mass spectral analyses, and the ion source spray that laboratory is assembled
Header structure is restricted, uses inconvenience, the not high deficiency of stability, and the present invention is special to provide a kind of dual pathways ion source nozzle, should
Ion source nozzle small volume, easy to use, stability is high, and cost is relatively low.
The technical solution adopted for the present invention to solve the technical problems is: a kind of dual pathways ion source nozzle, comprising:
Overcoat (2), has through hole, and described overcoat includes overcoat head and overcoat afterbody, described overcoat afterbody
Side has the side screwed hole being connected with described through hole；
Spray point (1), has electric discharge needle section and electric discharge Aculeata, and described electric discharge needle section is worn from described overcoat afterbody
Enter, described electric discharge Aculeata stretches out in described overcoat head；
Electrode (4), its front end is fitted with described spray point；
High-voltage conducting wires (6), its one end is connected with described electrode, by described electrode, high pressure is added on spray point；
Air inlet pipe (7), described air inlet pipe is inserted into the side screw thread in the hole of described overcoat.
Spray point screw head (3), its front end screw head is screwed in the afterbody screw of described overcoat, and described electric discharge Aculeata packs into institute
State in spray point screw head, and to the sealing of described spray point and fix.
Also include electrode screw head (5), described electrode is arranged in the endoporus of described electrode screw head, and described high-voltage conducting wires penetrate
The endoporus of described electrode screw head is simultaneously fitted with described electrode, and described electrode screw head is screwed into from the rear end of described spray point screw head,
Described electrode paste is on the end face of described electric discharge Aculeata.
One end of described high-voltage conducting wires insert in the endoporus of described electrode and with the welding of described electrode phase.
Described overcoat is pyramidal structure, and described overcoat head has cone, described overcoat afterbody thick in flat；Described
Overcoat is also included in the middle part of overcoat, connects described overcoat head and described overcoat afterbody, in the middle part of described overcoat be in the middle part of described overcoat
Cylinder, the external cylindrical surface in the middle part of described overcoat is carved with the linear quarter of the axial direction being easy to the position observing shower nozzle when mounted
Degree.
The aperture in described through hole is more than the external diameter of described spray point, and both gaps are high-purity nitrogen n2Logical
Road.
The structure of described spray point is in two-part, including head section and rear, described rear with diameter greater than described head section
Diameter.
The structure of described spray point is in two-part, and including head section and rear, the length of described rear is more than described head section
Length.
Described electrode is arranged on described electric discharge Aculeata.
Described electric discharge needle section is coniform shape.
The invention has the beneficial effects as follows:
(1) this ion source nozzle small volume, compact conformation, mainly external part (air inlet and the part adding high pressure) be all located at
Matrix afterbody, it is adaptable to dapci source, is particularly well-suited to small-sized direct mass spectral analyses.
(2) this ion source uses taper sealing, good airproof performance, stable connection, when taper part material is peek, permissible
Obtain better seal and stability.
(3) because critical piece structure is uncomplicated, producting process difficulty is little, and assembly and disassembly are convenient, main portion
Part highly versatile, thus cost is relatively low.
Brief description
Fig. 1 is the population structure axonometric drawing of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 be the a-a of Fig. 2 to sectional view, in order to show the assembling structure relation of each component part；
Fig. 4 is the spray point front view of the present invention, in order to show the structure of spray point；
Fig. 5 is the main sectional view of overcoat, in order to show the internal structure of overcoat；
Fig. 6 is the main sectional view of spray point screw head；
Fig. 7 is the main sectional view of electrode；
Fig. 8 is the main sectional view of electrode screw head；
Fig. 9 is the main sectional view of air inlet pipe screw head.
In figure:
1 spray point, 2 overcoats, 3 spray point screw head, 4 electrodes, 5 electrode screw heads, 6 high-voltage conducting wires, 7 enter
Trachea, 8 air inlet pipe screw head；
11 syringe needles, 12 needle handles；
21 screwed holes, 22 inner conical surfaces, 23 central gas passages, 24 Head gas passages, 25 screwed holes,
26 inner conical surfaces；
31 male cone (strobilus masculinus)s, 32 external screw threads, 33 external friction faces, 34 screwed holes, 35 endoporus；
41 front end faces, 42 rear end faces, 43 endoporus；
51 external screw threads, 52 external friction faces, 53 endoporus, 54 endoporus；
81 male cone (strobilus masculinus)s, 82 external screw threads, 83 external friction faces, 84 endoporus.
Specific embodiment
The specific embodiment of the present invention is described below in conjunction with the accompanying drawings, phase used by the device of in figure identical 26S Proteasome Structure and Function
Same reference marks, and accompanying drawing is only intended to help explain the present invention, does not represent the restriction of the scope of the invention, meanwhile, attached
Figure is not drawn to scale.
As shown in Figure 1, 2, 3, from the appearance, the present invention includes an ion source nozzle overcoat 2, air inlet and the portion adding high pressure
Part is all disposed within the afterbody of overcoat 2, is laid with two hollow screw head, respectively spray point screw head 3 on overcoat 2 at an angle to each otherly
With air inlet pipe screw head 8, introduce spray point 1 and air inlet pipe 7, spray point 1 inside the central hole of two screw head is respectively to overcoat 2
Stretch out overcoat 2 head one segment distance.Electrode screw head 5 is connected to spray point screw head 3 afterbody, and high-voltage conducting wires 6 are from electrode screw head 5
Introduce at heart hole, and be welded in the endoporus of electrode 4.
As shown in figure 4, spray point 1 is a rod-like structure, mainly include syringe needle 11 and needle handle 12 two parts, wherein syringe needle 11
End be in sharp geometric configuration, for forming high local fields in its vicinity.
As shown in figure 5, overcoat 2 is a pyramidal structure, the afterbody of overcoat thick in flat, the head of overcoat has cone
Point, inside offers a central through hole, is followed successively by screwed hole 21, inner conical surface 22, central gas passage 23, Head gas passage 24；
And intersect angled direction in overcoat 2 afterbody and central through hole and also offer a through hole, including screwed hole 25, inner conical surface
26, and communicate with central through hole.
As shown in fig. 6, spray point screw head 3 is a pyramidal structure, from the appearance, head is the male cone (strobilus masculinus) for sealing
31, centre is the external screw thread 32 for connecting, and afterbody twists the external friction face 33 of rotation for ease of handss.In terms of internal structure, electric discharge
Pin screw head 3 includes the screwed hole 34 for connecting and the endoporus 35 for sealing.
As shown in fig. 7, electrode 4 is single-revolution body structure, including front end face 41, rear end face 42 be used for being welded to connect high pressure
The endoporus 43 of wire 6.
As shown in figure 8, electrode screw head 5 is a pyramidal structure, from the appearance, including external screw thread 51 He for connecting
It is easy to the external friction face 52 that handss twist rotation.In terms of internal structure, electrode screw head 5 includes endoporus 53 and endoporus 54, wherein, endoporus 53
Internal diameter more slightly larger than the external diameter of high-voltage conducting wires 6, the external diameter of the interior diameter ratio electrode 4 of endoporus 54 is slightly larger, so, when tightening electrode screw head
When 5, the front end face 41 of electrode 4 holds out against spray point 1, and the rear end face 42 of electrode 4 holds out against on endoporus 53 and the interface of endoporus 54, can
To realize reliable and stable high pressure conduction.
As shown in figure 9, air inlet pipe screw head 8 is a pyramidal structure, from the appearance, head is the male cone (strobilus masculinus) for sealing
81, centre is the external screw thread 82 for connecting, and afterbody twists the external friction face 83 of rotation for ease of handss.In terms of internal structure, air inlet
An endoporus 84 is set, the external diameter of endoporus 84 is only slightly larger than the external diameter of air inlet pipe 7, is tightening air inlet pipe screw head 8, is being easy in pipe screw head 8
Sealing locking air inlet pipe 7.
As shown in figure 3, spray point 1 penetrates from the central through hole afterbody of overcoat 2, and expose one in Head gas passage 24
Set a distance, is through on the needle handle 12 of spray point 1 afterbody outside spray point screw head 3, when tightening spray point screw head 3, male cone (strobilus masculinus) 31 with
Inner conical surface 22 is close together, and endoporus 35 is also close on needle handle 12 simultaneously, has not only achieved sealing but also has secured spray point 1.High
Pressure wire 6 is welded in the afterbody endoporus 43 of electrode 4, and penetrates in electrode screw head 5, and electrode screw head 5 is screwed into spray point spiral shell
In 3, the front end face 41 of electrode 4 is then close to the afterbody of spray point, and the rear end face 42 of electrode 4 then withstands on endoporus 53 and endoporus 54
Interface on, it is possible to achieve reliable and stable high pressure conduction.Air inlet pipe 7 passes through from the endoporus 84 of air inlet pipe screw head 8, and inserts
In the screwed hole 25 of overcoat 2, tighten air inlet pipe screw head 8, when male cone (strobilus masculinus) 81 is close together with inner conical surface 26, endoporus 84 is also tight
It is attached to the outside of air inlet pipe 7, not only achieved sealing but also secured air inlet pipe 7.
Install as follows: the head of (1) spray point penetrates from the afterbody screwed hole of centre of overcoat, until in overcoat
Head exposes certain distance.The afterbody of spray point packs in spray point screw head, tightens spray point screw head, is formed close to spray point
Envelope.(2) high-voltage conducting wires pass through from the endoporus of electrode screw head, and the front end of high-voltage conducting wires is inserted the endoporus of electrode afterbody and welded jail
Gu, then strain the other end of high-voltage conducting wires, so that electrode is entered in the endoporus of electrode screw head.(3) by electrode screw head from spray point
The afterbody of screw head is screwed into, and makes electrode paste on the tail end face of spray point, when high-voltage conducting wires add high pressure, by electrode by high pressure
It is added on spray point.(4) air inlet pipe is inserted in the afterbody side screwed hole of overcoat, until on earth, then in the tail of overcoat
Portion's side screw thread in the hole is screwed into air inlet pipe screw head, and tightens sealing.
During work, high-voltage conducting wires add high pressure, then high pressure is also added on spray point, thus the head in spray point is attached
Nearly formation high local fields.Meanwhile, high-purity nitrogen n2It is passed through from air inlet pipe, and by between overcoat endoporus and spray point
Gap, sprays from overcoat head endoporus with the gap of electric discharge needle section, forms primary ion, such as water radical cation.
The through hole of overcoat is connected with side screwed hole, and the aperture in through hole aperture is more than the outer of spray point
Footpath, is easy to form the passage of high-purity nitrogen.
The structure of spray point is in two-part, and spray point includes head section and rear, the diameter with diameter greater than head section of rear, tail
The length of section is more than the length of head section.Rear is big compared with long and diameter, and head section, compared with short and diameter is little, both ensure that the rigidity of spray point
The geometric configuration again achieving head requires.The head of spray point generally has sharp geometry, thus when spray point adds
During upper high pressure, it is easy to be formed about high local fields in its head.
The screwed hole of centre of an overcoat afterbody and then inner conical surface, the head of spray point screw head is a male cone (strobilus masculinus), with
When spray point screw head endoporus aperture only slightly larger than the external diameter of spray point, when tightening spray point screw head, two conical surfaces are tightly
Fit together, the head inner hole surface of spray point screw head also fits tightly on the outer cylinder of spray point simultaneously, thus being formed
Sealing function, prevents nitrogen n2Reveal from the screwed hole of centre of afterbody.In the same manner, the side screwed hole of overcoat afterbody and then
Individual inner conical surface, the head of air inlet pipe screw head is a male cone (strobilus masculinus), and the endoporus aperture of air inlet pipe screw head is only outer than air inlet pipe simultaneously
Footpath is slightly larger, and when tightening air inlet pipe screw head, two conical surfaces fit tightly on together, simultaneously the head inner hole surface of air inlet pipe screw head
Also fitting tightly on the outer cylinder of air inlet pipe, thus forming sealing function, preventing nitrogen n2Side screwed hole from afterbody
Middle leakage.
All of part is all rotary structure.Wherein, overcoat is pyramidal structure, and the head of overcoat has cone, overcoat
Afterbody thick in flat, overcoat also includes pars intermedia, pars intermedia connects head and afterbody, and pars intermedia is in cylinder, middle
Axial linear graduation is carved with the external cylindrical surface in portion, is easy to observe the position of shower nozzle.
What deserves to be explained is, above-described embodiment is merely to illustrate the present invention, and the structure of wherein each part, connected mode are all
Can be varied from, every equivalents carrying out on the basis of technical solution of the present invention and improvement, all should not exclude
Outside protection scope of the present invention.
Claims (9)
1. a kind of dual pathways ion source nozzle is it is characterised in that include:
Overcoat (2), has through hole, and described overcoat includes overcoat head and overcoat afterbody, the side of described overcoat afterbody
There is the side screwed hole being connected with described through hole；
Spray point (1), has electric discharge needle section and electric discharge Aculeata, and described electric discharge needle section penetrates from described overcoat afterbody, institute
State electric discharge Aculeata to stretch out in described overcoat head；
Electrode (4), its front end is fitted with described spray point；
High-voltage conducting wires (6), its one end is connected with described electrode, by described electrode, high pressure is added on spray point；
Air inlet pipe (7), described air inlet pipe is inserted into the side screw thread in the hole of described overcoat；
Spray point screw head (3), its front end screw head is screwed in the afterbody screw of described overcoat, described electric discharge Aculeata pack into described in put
In acusector screw head, and to the sealing of described spray point and fix.
2. dual pathways ion source nozzle according to claim 1 is it is characterised in that also include electrode screw head (5), described electricity
Pole is arranged in the endoporus of described electrode screw head, described high-voltage conducting wires penetrate described electrode screw head endoporus and with described electrode phase
Laminating, described electrode screw head is screwed into from the rear end of described spray point screw head, and described electrode paste is in the end face of described electric discharge Aculeata
On.
3. dual pathways ion source nozzle according to claim 2 is it is characterised in that institute is inserted in one end of described high-voltage conducting wires
State in the endoporus of electrode and weld with described electrode phase.
4. the dual pathways ion source nozzle according to claim 1 or 2 or 3 is it is characterised in that described overcoat is tied for taper
Structure, described overcoat head has cone, described overcoat afterbody thick in flat；Described overcoat is also included in the middle part of overcoat, described
Connect described overcoat head and described overcoat afterbody in the middle part of overcoat, be in cylinder in the middle part of described overcoat, outer in the middle part of described overcoat
The linear graduation of the axial direction being easy to the position observing shower nozzle when mounted is carved with the face of cylinder.
5. dual pathways ion source nozzle according to claim 4 is it is characterised in that the aperture in described through hole is more than
The external diameter of described spray point, both gaps are high-purity nitrogen n2Passage.
6. dual pathways ion source nozzle according to claim 4 is it is characterised in that the structure of described spray point is in two sections
Formula, including head section and rear, the diameter with diameter greater than described head section of described rear.
7. dual pathways ion source nozzle according to claim 4 is it is characterised in that the structure of described spray point is in two sections
Formula, including head section and rear, the length of described rear is more than the length of described head section.
8. dual pathways ion source nozzle according to claim 4 is it is characterised in that described electrode is arranged on described spray point
Afterbody.
9. dual pathways ion source nozzle according to claim 4 it is characterised in that: described electric discharge needle section is conical shape
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528042.2A CN104269339B (en) | 2014-10-09 | 2014-10-09 | Double-channel ion source spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528042.2A CN104269339B (en) | 2014-10-09 | 2014-10-09 | Double-channel ion source spray head |
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| Publication Number | Publication Date |
|---|---|
| CN104269339A CN104269339A (en) | 2015-01-07 |
| CN104269339B true CN104269339B (en) | 2017-02-01 |
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ID=52160851
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410528042.2A Active CN104269339B (en) | 2014-10-09 | 2014-10-09 | Double-channel ion source spray head |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485016A (en) * | 1993-04-26 | 1996-01-16 | Hitachi, Ltd. | Atmospheric pressure ionization mass spectrometer |
| CN1681579A (en) * | 2002-09-18 | 2005-10-12 | 安捷伦科技有限公司 | Multimode ionization source |
| CN1950698A (en) * | 2004-07-27 | 2007-04-18 | 工程吸气公司 | Ion mobility spectrometer comprising a corona discharge ionization element |
| CN101201335A (en) * | 2006-12-29 | 2008-06-18 | 东华理工学院 | Surface desorption atmospheric chemical ionization source and method for analyzing surface desorption atmospheric chemical ionization mass spectrum |
| CN102709147A (en) * | 2012-06-21 | 2012-10-03 | 清华大学深圳研究生院 | Electrospray ion source and mass spectrometer |
| CN203071042U (en) * | 2013-02-22 | 2013-07-17 | 东华理工大学 | Universal ion source sprayer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8759757B2 (en) * | 2010-10-29 | 2014-06-24 | Thermo Finnigan Llc | Interchangeable ion source for electrospray and atmospheric pressure chemical ionization |
-
2014
- 2014-10-09 CN CN201410528042.2A patent/CN104269339B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485016A (en) * | 1993-04-26 | 1996-01-16 | Hitachi, Ltd. | Atmospheric pressure ionization mass spectrometer |
| CN1681579A (en) * | 2002-09-18 | 2005-10-12 | 安捷伦科技有限公司 | Multimode ionization source |
| CN1950698A (en) * | 2004-07-27 | 2007-04-18 | 工程吸气公司 | Ion mobility spectrometer comprising a corona discharge ionization element |
| CN101201335A (en) * | 2006-12-29 | 2008-06-18 | 东华理工学院 | Surface desorption atmospheric chemical ionization source and method for analyzing surface desorption atmospheric chemical ionization mass spectrum |
| CN102709147A (en) * | 2012-06-21 | 2012-10-03 | 清华大学深圳研究生院 | Electrospray ion source and mass spectrometer |
| CN203071042U (en) * | 2013-02-22 | 2013-07-17 | 东华理工大学 | Universal ion source sprayer |
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| Publication number | Publication date |
|---|---|
| CN104269339A (en) | 2015-01-07 |
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Effective date of registration: 20200513 Address after: 330038 R & D center of electromechanical Industrial Science and Technology Park, No. 88, Dingxiang Road, Nanchang Economic and Technological Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi Zhengpu Yihe Technology Co., Ltd Address before: 344000 No. 56, Xuefu Road, Fuzhou, Jiangxi Patentee before: EAST CHINA INSTITUTE OF TECHNOLOGY |
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