CN103424466A - Ultraviolet lamp driving electrode of proportion integration differentiation (PID) sensor - Google Patents
Ultraviolet lamp driving electrode of proportion integration differentiation (PID) sensor Download PDFInfo
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- CN103424466A CN103424466A CN201310342499XA CN201310342499A CN103424466A CN 103424466 A CN103424466 A CN 103424466A CN 201310342499X A CN201310342499X A CN 201310342499XA CN 201310342499 A CN201310342499 A CN 201310342499A CN 103424466 A CN103424466 A CN 103424466A
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Abstract
The invention provides an ultraviolet (UV) lamp driving electrode of a proportion integration differentiation (PID) sensor. The UV lamp driving electrode of the PID sensor comprises an electrode supporting part, a UV lamp tube and two driving electrodes, wherein the two driving electrodes are distributed oppositely and positioned in the electrode supporting part; a clamping slot is formed in the electrode supporting part; each driving electrode comprises an arc-shaped deformation part and limiting parts positioned at the two ends of the deformation part; the deformation parts of the two driving electrodes form an accommodating cavity capable of accommodating the UV lamp tube; and after the UV lamp tube is placed into the accommodating cavity, the deformation parts are in interference fit with the UV lamp tube. In the structure of the UV lamp driving electrode, the UV lamp tube is in interference fit with the deformation parts, so the periphery of the UV lamp tube can be tightly wrapped by the driving electrodes after the UV lamp tube is mounted, the UV lamp tube is contacted with the driving electrodes seamlessly and tightly, the contact area is maximized, and the excitation efficiency of the UV lamp is improved.
Description
Technical field
The present invention relates to a kind of sensor, particularly relate to a kind of uviol lamp drive electrode of PID sensor.
Background technology
PID sensor (being optic ionized sensor) can detect effumability organic gas or compound; its sensor (as the FID sensor) with a lot of other types does not possess; comprise that detection limit is low, resolution is high, volume is little, intrinsic safety type, be convenient to be made into portable sensor device etc.; therefore it is widely used in the fields such as chemical industry, oil, environmental protection, pharmacy, wine brewing, for safety in production, environmental protection, hazard detection escort.
The PID sensor comprises UV-lamp, two drive electrodes, chamber, ion detector (being detection part), the optic ionized sensor for detection of gas concentration as disclosed as Chinese invention patent instructions CN101563601B.Specifically, UV-lamp is between two drive electrodes, and drive electrode is connected with lamp drive circuit, and UV-lamp comprises fluorescent tube and optical window, and described fluorescent tube and optical window form one for filling the enclosure space of inert gas.Lamp drive circuit provides the AC signal to drive electrode, so produce the last one alternating electric field in fluorescent tube, the inert gas ion in fluorescent tube is changed into to electronics and ion; Then, electronics and ion combination again in fluorescent tube, produce the UV photon; By optical window by the UV photon radiation in chamber, and with chamber in the effumability gas molecule collision, the collision make the molecular ionization of those ionization energy lower than photon energy, produce detectable ion and electronics.
Described ion detector is positioned at chamber, and near optical window, for collecting detectable electronics and the ion produced through ionization.Ion detector comprises bias electrode and detecting electrode, and a biasing circuit is connected with described bias electrode and for bias electrode provides positive bias voltage, so bias electrode repels the positive ion that photoionization produces.Potential electrode is close to ground voltage, and separates with bias electrode, therefore form a bias field between bias electrode and potential electrode.Potential electrode absorbs positive ion, produces and measures electric current.One metering circuit is connected with potential electrode, and measures described measurement electric current.One microprocessor is connected with metering circuit with biasing circuit, can regulate biasing circuit is applied to the bias voltage on bias electrode on the one hand, receive on the other hand the signal from the expression metering circuit of metering circuit, thereby pass through the concentration of definite tested gas of measurement electric current.
Hence one can see that, one of crucial building block that UV-lamp and drive electrode are the PID sensor, and the design of UV-lamp and drive electrode, mounting means directly affect work efficiency and the reliability of PID sensor.At present, UV-lamp comprises the electrode supporting parts 1 that are made of plastics and the UV fluorescent tube 2 of being made by glass, two drive electrodes 3 are loop configuration, drive electrode 3 is enclosed within the periphery of UV fluorescent tube 2, and by certain spacing concentric, place each other, again UV fluorescent tube 2 is arranged in electrode supporting parts 1, as shown in Figure 1 together with drive electrode 3; Perhaps, described drive electrode 3 is elastic sheet metal, is coated on the periphery of UV fluorescent tube 2, as shown in Figure 2.But, in manufacture process, the tolerance that the diameter of UV fluorescent tube produces can affect the consistance of tube diameter, some tube diameter is less than normal, and some tube diameter is bigger than normal, and the xsect of cylindrical glass fluorescent tube often omits ovalize.So all there is following defect in the structure of the UV-lamp drive electrode shown in Fig. 1 and Fig. 2: when drive electrode coordinates tension with the UV fluorescent tube, fluorescent tube easily damages; When drive electrode coordinated pine with the UV fluorescent tube, undertighten can only locally be fitted, contact to drive electrode with fluorescent tube, can not eliminate due to the caused tolerance clearance be present between fluorescent tube and drive electrode of glass lamp distortion, thereby cause the launching efficiency of UV-lamp to reduce, can't light.In addition, when adopting the drive electrode of loop configuration, because annular drive electrode and fluorescent tube contact area are less, so the relatively high voltage of needs could be excited UV-lamp.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of uviol lamp drive electrode of the PID sensor that can make drive electrode and UV fluorescent tube fit tightly.
For achieving the above object, the invention provides a kind of uviol lamp drive electrode of PID sensor, comprise electrode supporting parts, UV fluorescent tube and two drive electrodes that relatively distribute and all be arranged in the electrode supporting parts, be provided with draw-in groove in described electrode supporting parts, described drive electrode comprises the variant part of arc and the limiting section that is positioned at the variant part two ends, the variant part formation one of two drive electrodes can be held the cavity volume of UV fluorescent tube, after putting into the UV fluorescent tube in described cavity volume, variant part and UV fluorescent tube are interference fit.
Preferably, described limiting section comprises the press section of arc and L shaped location division, and described location division and draw-in groove outer wall lean, and described press section is connected with variant part.
Further, also comprise that one is fixed on the light cover on the electrode supporting parts, the upper surface of described light cover is provided with a ground loop.
Preferably, the periphery of described ground loop is provided with a plurality of positioning mountings, and the periphery of described light cover upper end is provided with a plurality of projections relative with positioning mounting, described projection and positioning mounting interference fit.
Further, described ground loop periphery is provided with an earth terminal, and this earth terminal is through in light cover and from the light cover lower end and stretches out; In described two drive electrodes, drive electrode is provided with one and extends upward and through the high pressure pin of light cover, another drive electrode is provided with one and extends upward and, successively through the grounding pin of light cover and ground loop, this grounding pin is fixedly connected with ground loop.
Preferably, the lower end of described UV fluorescent tube is a tapered tube.
As mentioned above, the uviol lamp drive electrode of the PID sensor the present invention relates to has following beneficial effect:
In the structure of this uviol lamp drive electrode, UV fluorescent tube and variant part are interference fit, after therefore the UV fluorescent tube installs, drive electrode can closely be coated on the periphery of UV fluorescent tube, seamless close contact between the two, thereby make contact area reach maximization, improve the launching efficiency of UV-lamp, finally improve the accuracy of detection of PID sensor.
The accompanying drawing explanation
The structural representation that Fig. 1, Fig. 2 are prior art middle-ultraviolet lamp lamp and drive electrode.
Fig. 3 is structural representation of the present invention.
The explosion figure that Fig. 4 is Fig. 3.
The vertical view that Fig. 5 is Fig. 3.
The B-B that Fig. 6 is Fig. 5 is to cut-open view.
The C-C that Fig. 7 is Fig. 6 is to cut-open view.
The structural representation that Fig. 8 is drive electrode in the present invention.
The vertical view that Fig. 9 is Fig. 8.
The A circle enlarged drawing that Figure 10 is Fig. 3.
The element numbers explanation
1 electrode supporting parts
12 draw-in grooves
13 connecting portions
2 UV fluorescent tubes
21 tapered tubes
3 drive electrodes
31 variant parts
32 limiting sections
321 press sections
322 location divisions
33 high pressure pins
34 grounding pins
35 cavity volumes
4 light covers
41 projections
42 link slots
43 bulge loops
5 ground loops
51 positioning mountings
511 vertical portions
512 horizontal parts
52 earth terminals
Embodiment
Below by particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.
Notice, appended graphic the illustrated structure of this instructions, ratio, size etc., equal contents in order to coordinate instructions to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the purpose that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this instructions, quote as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the present invention.
As shown in Figure 3 and Figure 4, the invention provides a kind of uviol lamp drive electrode of PID sensor, comprise electrode supporting parts 1, UV fluorescent tube 2, and two symmetrical and all be arranged in the drive electrode 3 of electrode supporting parts 1, be provided with the variant part 31 that the described drive electrode 3 of draw-in groove 12 comprises arc in described electrode supporting parts 1, and the limiting section 32 that is positioned at variant part 31 two ends, variant part 31 formation one of two drive electrodes 3 can be held the cavity volume 35 of UV fluorescent tube 2, after putting into UV fluorescent tube 2 in described cavity volume 35, see Fig. 7, described variant part 31 is positioned at the periphery of UV fluorescent tube 2, and variant part 31 is interference fit with UV fluorescent tube 2.Certainly, in different structures, the quantity of described drive electrode 3 can increase to a plurality of by two.
In the structure of this uviol lamp drive electrode, UV fluorescent tube 2 is interference fit with variant part 31, after two drive electrodes 3 are arranged in electrode supporting parts 1, ultimate range L between the variant part 31 of two drive electrodes 3 is less than the diameter D of UV fluorescent tube 2, described diameter D is the minimum diameter of UV fluorescent tube 2 in its margin tolerance, as shown in Figures 5 to 9, so after UV fluorescent tube 2 inserts between two drive electrodes 3, the variant part 31 of the arc of drive electrode 3 outwards struts, and make variant part 31 closely be coated on the periphery of UV fluorescent tube 2, variant part 31 and UV fluorescent tube 2 be seamless close contact between the two, thereby make contact area reach maximization, improve the launching efficiency of UV-lamp, the final accuracy of detection that improves the PID sensor.
In addition, in the present embodiment, two drive electrodes 3 are a resilient blade, see Fig. 8 and Fig. 9, and described limiting section 32 also comprises the press section 321 of arc and L shaped location division 322, described location division 322 leans with draw-in groove 12 outer walls, and described press section 321 is tangent with variant part 31 and be connected glossily.Preferably, described variant part 31 is a circular arc with press section 321, and the circular arc opening direction of variant part 31 is contrary with the circular arc opening direction of press section 321, the wrap direction that is both is contrary, therefore when circular-arc variant part 31 strutted to periphery due to packing into of UV fluorescent tube 2, the circular-arc press section 321 that is positioned at variant part 31 two ends forms the elasticity extruding to variant part 31 under the effect of L shaped location division 322 simultaneously, and because drive electrode 3 quality of being made by resilient blade are very thin and very pliable and tough, when therefore the tensility elastic deformation occurs in variant part 31 and press section 321 at the same time, variant part 31 self can adapt to the distortion that UV fluorescent tube 2 produces in manufacture process, finally make variant part 31 closely coat the outside surface of UV fluorescent tube 2 in large area, to improve the launching efficiency of uviol lamp, reduce exciting voltage, make uviol lamp more easily be excited and light.Preferably, for the ease of the installation of UV fluorescent tube 2, therefore the lower end of described UV fluorescent tube 2 is a tapered tube 21, as shown in Figure 4 and Figure 6.And the drive electrode 3 consisted of variant part 31, press section 321 and location division 322 is an one-piece construction.
Further, see Fig. 3, also comprise that one is fixed on the light cover 4 on electrode supporting parts 1, the upper surface of described light cover 4 is provided with a ground loop 5.Described light cover 4 and electrode supporting parts 1 are made by insulating material, and as adopted plastics, and electrode supporting parts 1 and light cover 4 achieve a fixed connection by wringing fit.Specifically, as shown in Figure 4 and Figure 6, described electrode supporting parts 1 upper end is a junction 13, light cover 4 lower ends are provided with the link slot 42 suitable with connecting portion 13, described connecting portion 13 is arranged in link slot 42, and connecting portion 13 be interference fit with link slot 42, certain, after described connecting portion 13 stretches in light cover 4, can fix by bonding mode.Described ground loop 5 is a becket, with the upper surface of light cover 4, contact, in to drive electrode 3, providing the process of high pressure, this high pressure may produce electric leakage to the outside of plastic electrode support component 1 and plastics light cover 4, therefore by ground loop 5 by this electrical leakage voltage ground connection, form short circuit, effectively play the effect of safety guarantee, meet the regulation of essential safety Valuation Standard.
Preferably, see Fig. 3 and Fig. 4, the periphery of described ground loop 5 is provided with a plurality of positioning mountings 51, and the periphery of described light cover 4 upper ends is provided with a plurality of projections 41 relative with positioning mounting 51, described projection 41 and positioning mounting 51 interference fit, thus ground loop 5 is fixed on light cover 4.In the present embodiment, described positioning mounting 51 has three, be evenly distributed on the periphery of ground loop 5, and described positioning mounting 51 comprises a vertical portion 511 and a horizontal part 512, described light cover 4 upper ends are provided with a upwardly extending bulge loop 43, and described projection 41 is located at the periphery of this bulge loop 43, and ground loop 5 contacts with the upper surface of bulge loop 43, and vertical portion 511 is wringing fit with projection 41, and described horizontal part 512 is resisted against the upper surface of light cover 4.
Further, see Fig. 3 and Fig. 4, described ground loop 5 peripheries are provided with an earth terminal 52, and this earth terminal 52 is through in light cover 4 and from light cover 4 lower ends and stretches out; In described two drive electrodes 3, drive electrode 3 is provided with one and extends upward and through the high pressure pin 33 of light cover 4, another drive electrode 3 is provided with one and extends upward and successively through the grounding pin 34 of light cover 4 and ground loop 5, as shown in figure 10, this grounding pin 34 is welded to connect with ground loop 5, and then has also realized the ground connection of drive electrode 3 in ground loop 5 ground connection.In the present embodiment, described grounding pin 34 is located in a positioning mounting 51 of ground loop 5, and earth terminal 52 stretches out from the outward flange of this positioning mounting 51, thereby makes structure compacter reliable.In the present embodiment, described high pressure pin 33 is located at the right-hand member of a drive electrode 3, grounding pin 34 is located at the left end of another drive electrode 3, and high pressure pin 33 and grounding pin 34 be all upwardly extending from L shaped location division 322, so that the wiring of PID sensor.
During installation, in the electrode supporting parts 1 of first drive electrode 3 being packed into, two straight flanges of L shaped location division 322 are contacted with the inwall of electrode supporting parts 1, and make 322De corner, L shaped location division be resisted against the corner of draw-in groove 12; Pack into successively light cover 4, ground loop 5 and UV fluorescent tube 2, whole installation process is convenient, simple, easy to operate, also is convenient to the replacing of UV fluorescent tube 2, and drive electrode 3 excellent performances, durable reliable, and then extends the whole service life of PID sensor again.
In sum, the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, be modified or be changed above-described embodiment.Therefore, such as in affiliated technical field, have and usually know that the knowledgeable, not breaking away from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (6)
1. the uviol lamp drive electrode of a PID sensor, comprise electrode supporting parts (1), and two drive electrodes (3) that relatively distribute and all be arranged in electrode supporting parts (1), it is characterized in that: be provided with draw-in groove (12) in described electrode supporting parts (1), described drive electrode (3) comprises the variant part (31) of arc, and the limiting section (32) that is positioned at variant part (31) two ends, form one between the variant part (31) of two drive electrodes (3) and can hold the cavity volume (35) of UV fluorescent tube (2), after putting into UV fluorescent tube (2) in described cavity volume (35), variant part (31) is interference fit with UV fluorescent tube (2).
2. the uviol lamp drive electrode of PID sensor according to claim 1, it is characterized in that: described limiting section (32) comprises the press section (321) of arc and L shaped location division (322), described location division (322) leans with draw-in groove (12) outer wall, and described press section (321) is connected with variant part (31).
3. the uviol lamp drive electrode of PID sensor according to claim 1, it is characterized in that: also comprise that one is fixed on the light cover (4) on electrode supporting parts (1), the upper surface of described light cover (4) is provided with a ground loop (5).
4. the uviol lamp drive electrode of PID sensor according to claim 3, it is characterized in that: the periphery of described ground loop (5) is provided with a plurality of positioning mountings (51), the periphery of described light cover (4) upper end is provided with a plurality of projections (41) relative with positioning mounting (51), described projection (41) and positioning mounting (51) interference fit.
5. the uviol lamp drive electrode of PID sensor according to claim 3, it is characterized in that: described ground loop (5) periphery is provided with an earth terminal (52), and this earth terminal (52) is through in light cover (4) and from light cover (4) lower end and stretches out; In described two drive electrodes (3), a drive electrode (3) is provided with one and extends upward and through the high pressure pin (33) of light cover (4), another drive electrode (3) is provided with one and extends upward and, successively through the grounding pin (34) of light cover (4) and ground loop (5), this grounding pin (34) is fixedly connected with ground loop (5).
6. the uviol lamp drive electrode of PID sensor according to claim 1, it is characterized in that: the lower end of described UV fluorescent tube (2) is a tapered tube (21).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342499.XA CN103424466B (en) | 2013-08-07 | 2013-08-07 | The uviol lamp drive electrode of PID sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342499.XA CN103424466B (en) | 2013-08-07 | 2013-08-07 | The uviol lamp drive electrode of PID sensor |
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| CN103424466A true CN103424466A (en) | 2013-12-04 |
| CN103424466B CN103424466B (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614029A (en) * | 2018-05-12 | 2018-10-02 | 重庆邮电大学 | High-sensitivity miniature optic ionized sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773833A (en) * | 1996-03-22 | 1998-06-30 | Rae Systems, Inc. | Photo-ionization detector for volatile gas measurement |
| CN1553467A (en) * | 2003-06-03 | 2004-12-08 | 鸿富锦精密工业（深圳）有限公司 | Flurescent tube |
| CN101006339A (en) * | 2004-08-06 | 2007-07-25 | 华瑞科学仪器(上海)有限公司 | Integrated optic ionized sensor |
| CN201234047Y (en) * | 2008-03-24 | 2009-05-06 | 李文亮 | Improved bulb holder construction |
| EP2458375A1 (en) * | 2010-11-30 | 2012-05-30 | General Electric Company | Photo-ionization detectors and associated methods thereof |
-
2013
- 2013-08-07 CN CN201310342499.XA patent/CN103424466B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773833A (en) * | 1996-03-22 | 1998-06-30 | Rae Systems, Inc. | Photo-ionization detector for volatile gas measurement |
| CN1553467A (en) * | 2003-06-03 | 2004-12-08 | 鸿富锦精密工业（深圳）有限公司 | Flurescent tube |
| CN101006339A (en) * | 2004-08-06 | 2007-07-25 | 华瑞科学仪器(上海)有限公司 | Integrated optic ionized sensor |
| CN201234047Y (en) * | 2008-03-24 | 2009-05-06 | 李文亮 | Improved bulb holder construction |
| EP2458375A1 (en) * | 2010-11-30 | 2012-05-30 | General Electric Company | Photo-ionization detectors and associated methods thereof |
Non-Patent Citations (2)
| Title |
|---|
| 范秋生: "光离子化气体传感器优化设计", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 马士明: "便携式光离子化检测器的研究与实现", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614029A (en) * | 2018-05-12 | 2018-10-02 | 重庆邮电大学 | High-sensitivity miniature optic ionized sensor |
| CN108614029B (en) * | 2018-05-12 | 2024-05-28 | 重庆邮电大学 | High-sensitivity miniature photoionization sensor |
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