CN218766803U

CN218766803U - FPD flame luminosity detector

Info

Publication number: CN218766803U
Application number: CN202222777279.7U
Authority: CN
Inventors: 宣鹏奇; 王力; 方梓潼
Original assignee: Zhejiang Glenn Technology Co ltd
Current assignee: Ningbo Huichuang Automatic Control Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-28
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to a luminosity detects technical field, and discloses FPD flame luminosity detector, including detecting seat and gas circuit mount pad, the combustion chamber has been seted up on the detection seat, just the combustion chamber vertically runs through and detects the seat, the front side of detecting the seat upper end is seted up and is equipped with heating rod installation slotted hole, the rear side of detecting the seat lower extreme is seted up and is equipped with platinum resistance installation slotted hole, the inboard of combustion chamber is provided with the quartz glass pipe, detect the upper end of seat and install the connecting seat, photomultiplier is installed to the upper end of connecting seat. The FPD flame luminosity detector utilizes the gas path mounting seat to facilitate the mixing of different gases, and the gases are sent into the combustion chamber by the flame nozzle and ignited for combustion, the luminosity of the combustion passes through the optical filter to filter the optical signal which is not sent out by S, P, so that the optical signal is converted into an electric signal by the photomultiplier, the electric signal after multiplication and amplification is sent into the recorder, the detection of the luminosity of the flame is realized, the whole structure is simpler, the operation is convenient, and the practicability is improved.

Description

FPD flame luminosity detector

Technical Field

The utility model relates to a luminosity detects technical field, specifically is FPD flame luminosity detector.

Background

A FPD detector, i.e. a flame photometric detector, is a detector with high selectivity and high sensitivity to phosphorus and sulfur-containing compounds, when a sample is burnt by a hydrogen-rich flame, a phosphorus-containing organic compound mainly emits light with the wavelength of 526nm in the form of HPO fragments, a sulfur-containing compound emits characteristic light with the wavelength of 394nm in the form of S2 molecules, a photomultiplier converts optical signals into electric signals, and the electric signals are amplified and recorded by micro-current, so that the detector is an analyzer and is applied to the fields of prevention, petroleum, chemical engineering, gas, coke oven gas, refining, nuclear energy, aerospace, medical use, methane, smelting, oxygen production, semiconductors, printing and dyeing and the like.

The existing FPD flame photometric detector has a complex structure, so that the using and maintaining specialties of the instrument are high, the operation is complex, certain professional skills are required by users, and meanwhile, the production cost is high, so that the practicability is low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a FPD flame luminosity detector to current FPD flame luminosity detector structure that proposes in solving above-mentioned background art is comparatively complicated, and the use that leads to the instrument is stronger with the maintenance specialty, and the operation is comparatively complicated, and the required certain occupational skill of user of service, while manufacturing cost is higher, causes the lower problem of practicality.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: FPD flame luminosity detector, including detecting seat and gas circuit mount pad, it has seted up the combustion chamber on the seat to detect, just the combustion chamber vertically runs through and detects the seat, the front side of detecting the seat upper end is opened and is equipped with heating rod installation slotted hole, the rear side of detecting the seat lower extreme is opened and is equipped with platinum resistance installation slotted hole, the front end fixed mounting of gas circuit mount pad has the flame nozzle, the inboard of combustion chamber is provided with the quartz glass pipe, the connecting seat is installed to the upper end of detecting the seat, photomultiplier is installed to the upper end of connecting seat, the upper end of photomultiplier installs the partial pressure subassembly.

Preferably, the rear side of gas circuit mount pad upper end is provided with the hydrogen entry, the right side of gas circuit mount pad rear end is provided with air inlet, the rear end of gas circuit mount pad is provided with the sample entry, makes things convenient for the input of hydrogen and nitrogen gas, oxygen.

Preferably, the left and right sides symmetry that the heating rod mounting slotted hole is located the detection seat is provided with two, and two the length and the combustion chamber mutual adaptation of heating rod mounting slotted hole make things convenient for the installation of heating rod.

Preferably, the rear end of flame nozzle and the front end threaded connection of gas circuit mount pad, the inboard of flame nozzle rear end is provided with the mixing cavity, hydrogen entry, air inlet, sample entry all communicate with mixing cavity each other, the front end of flame nozzle extends to in the quartz glass pipe, just the front end of flame nozzle is provided with the ignition point, the mixture of three kinds of gases of being convenient for to discharge into the combustion chamber through flame nozzle, burn.

Preferably, the avris that the rear end of combustion chamber inside is located quartz glass pipe is provided with the lens hood, flame nozzle and combustion chamber switch-on each other, lens hood and flame nozzle cup joint, and through the luminous of lens hood separation flame, the noise that reduces the instrument used, quartz capsule mainly used guarantees to send out the district at central point simultaneously and puts, improves the luminous intensity to there is the thermal-insulated effect of protection optical filter and prevents pollution and the corruption of harmful substance pair FPD inner chamber and light filter.

Preferably, the lower extreme of connecting seat and the threaded connection of detection seat, the upper end and the photomultiplier threaded connection of connecting seat, the inboard lower extreme of connecting seat is provided with the quartz glass piece, the inboard top that is located the quartz glass piece of connecting seat is provided with the light filter, and the effect of light filter filters the light signal that non-S, P sent out, and the light signal through the light filter is converted into the signal of telecommunication by the photomultiplier, sends the signal of telecommunication after will multiplying and amplifying into the recorder, realizes the detection to flame luminosity.

Compared with the prior art, the utility model provides a FPD flame luminosity detector possesses following beneficial effect:

1. the FPD flame luminosity detector utilizes the gas path mounting seat to facilitate the mixing of different gases, and the gases are sent into the combustion chamber by the flame nozzle and ignited for combustion, the luminosity of the combustion passes through the optical filter to filter the optical signal which is not sent out by S, P, so that the optical signal is converted into an electric signal by the photomultiplier, the electric signal after multiplication and amplification is sent into the recorder, the detection of the luminosity of the flame is realized, the whole structure is simpler, the operation is convenient, and the practicability is improved.

2. The FPD flame luminosity detector ensures that the light emitting area is in the central position by arranging the quartz glass tube in the combustion chamber, improves the light intensity, simultaneously has the heat insulation function of protecting the optical filter, prevents harmful substances from polluting and corroding the inner cavity of the FPD and the optical filter, and prolongs the service life.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the second embodiment of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A-base:Sub>A in fig. 3 according to the present invention.

In the figure: 1. a detection seat; 2. a gas circuit mounting seat; 21. a hydrogen inlet; 22. an air inlet; 23. a sample inlet; 3. a combustion chamber; 4. a heating rod mounting slot hole; 5. a platinum resistor mounting slot; 6. a flame nozzle; 61. a mixing cavity; 7. a quartz glass tube; 71. a light shield; 8. a connecting seat; 81. quartz glass sheets; 82. an optical filter; 9. a photomultiplier tube; 10. a voltage divider assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the FPD flame luminosity detector comprises a detection seat 1 and a gas circuit installation seat 2, wherein the rear side of the upper end of the gas circuit installation seat 2 is provided with a hydrogen inlet 21, the right side of the rear end of the gas circuit installation seat 2 is provided with an air inlet 22, the rear end of the gas circuit installation seat 2 is provided with a sample inlet 23, the detection seat 1 is provided with a combustion chamber 3, the combustion chamber 3 longitudinally penetrates through the detection seat 1, the front side of the upper end of the detection seat 1 is provided with a heating rod installation slotted hole 4, the heating rod installation slotted hole 4 is symmetrically arranged at the left side and the right side of the detection seat 1, the length of the two heating rod installation slotted holes 4 is matched with the combustion chamber 3, the rear side of the lower end of the detection seat 1 is provided with a platinum resistor installation slotted hole 5, the flame nozzle 6 is fixedly installed at the front end of the gas path installation seat 2, the rear end of the flame nozzle 6 is in threaded connection with the front end of the gas path installation seat 2, the inner side of the rear end of the flame nozzle 6 is provided with a mixing cavity 61, the hydrogen inlet 21, the air inlet 22 and the sample inlet 23 are communicated with the mixing cavity 61, the front end of the flame nozzle 6 extends into the quartz glass tube 7, the front end of the flame nozzle 6 is provided with an ignition point, the gas path installation seat 2 is used for facilitating mixing of different gases, the gases are fed into the combustion chamber 3 through the flame nozzle 6 and ignited and combusted, and the combustion chamber 3 is protected through the quartz glass tube 7, so that the service life of the equipment is prolonged;

the inboard of combustion chamber 3 is provided with quartz glass tube 7, the avris that the inboard rear end of combustion chamber 3 lies in quartz glass tube 7 is provided with lens hood 71, flame nozzle 6 and combustion chamber 3 switch on each other, lens hood 71 and flame nozzle 6 cup joint, detect the upper end of seat 1 and install connecting seat 8, photomultiplier 9 is installed to the upper end of connecting seat 8, the lower extreme of connecting seat 8 and detection seat 1 threaded connection, the upper end and the photomultiplier 9 threaded connection of connecting seat 8, the inboard lower extreme of connecting seat 8 is provided with quartz glass piece 81, the inboard top that lies in quartz glass piece 81 of connecting seat 8 is provided with light filter 82, voltage divider subassembly 10 is installed to the upper end of photomultiplier 9, the luminosity of burning passes through light filter 82, the optical signal that the filtering is not sent S, P, thereby convert the photomultiplier 9 into the signal of telecommunication, send the signal of multiplying into the record ware, realize the detection to the luminosity, overall structure is comparatively simple, and convenient operation, and practicability is improved.

The working principle is as follows: firstly, connecting pipelines at a hydrogen inlet 21, an air inlet 22 and a sample inlet 23 respectively, sending different gases into a gas path mounting seat 2, and uniformly mixing the gases through a mixing cavity 61, so that the gases are sprayed out through a flame nozzle 6 and ignited for combustion, a combustion light area is positioned in a combustion chamber 3, and the light-emitting of flame is blocked through a light-shielding cover 71, so that the noise of the instrument is reduced, meanwhile, a quartz glass tube 7 is mainly used for ensuring that a light-emitting area is in the central position, so that the light intensity is improved, the heat insulation effect of a protective optical filter 82 is achieved, the pollution and corrosion of harmful substances to an FPD inner cavity and the optical filter 82 are prevented, the service life of the device is prolonged, after the luminosity is generated by combustion, the luminosity passes through the optical filter 82, so that an optical signal which is not emitted by S, P is filtered, the optical signal is converted into an electric signal by a photomultiplier 9, the electric signal after multiplication is sent into a recorder, the flame luminosity detection is realized, the whole structure is simpler, the operation is convenient, and the practicability is improved;

the principle is as follows: in a hydrogen rich flame, hydrogen decomposes at high temperature: i.e. H2= H + H, the sulphur-containing compound (RS) is first oxidized to SO2 and then reduced to S atoms by H: namely RS +2O2= SO2+ RO2, SO2+4H = S +2H2O, in the peripheral cold flame zone (about 390 ℃) to generate excited state S2 through the following reactions: i.e. S + S = S2, H + S2= S2+ H2, H + OH + S2= S2+ H2O, S + M = S2+ M, where M is a gas molecule, and the excited S2 molecule returns to the ground state producing a spectrum of 350 to 430 nm: i.e. S2= S2+ hv (350-430 nm), whereas for phosphorus-containing compounds, which are oxidized to phosphorus oxide PO first and then reduced to excited HPO by H, a spectrum of 480-600 nm is produced: i.e. PO + H = HPO. HPO = HPO + hv (480 to 600 nm).

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

FPD flame photometric detector, including detecting seat (1) and air circuit mount pad (2), its characterized in that: detect and seted up combustion chamber (3) on seat (1), just combustion chamber (3) vertically runs through and detect seat (1), it installs slotted hole (4) to open heating rod to detect the front side of seat (1) upper end, the rear side of detecting seat (1) lower extreme is opened and is equipped with platinum resistance installation slotted hole (5), the front end fixed mounting of gas circuit mount pad (2) has flame spray nozzle (6), the inboard of combustion chamber (3) is provided with quartz glass pipe (7), detect the upper end of seat (1) and install connecting seat (8), photomultiplier (9) are installed to the upper end of connecting seat (8), partial pressure subassembly (10) are installed to the upper end of photomultiplier (9).
2. The FPD flame photometric detector of claim 1, wherein: the rear side of the upper end of the gas circuit mounting seat (2) is provided with a hydrogen inlet (21), the right side of the rear end of the gas circuit mounting seat (2) is provided with an air inlet (22), and the rear end of the gas circuit mounting seat (2) is provided with a sample inlet (23).
3. The FPD flame photometric detector of claim 1, wherein: the left side and the right side of the heating rod installation slot hole (4) in the detection seat (1) are symmetrically provided with two, and the length of the heating rod installation slot hole (4) is matched with that of the combustion chamber (3) in a mutual matching manner.
4. The FPD flame photometric detector of claim 2, wherein: the rear end of flame nozzle (6) and the front end threaded connection of gas circuit mount pad (2), the inboard of flame nozzle (6) rear end is provided with mixing cavity (61), hydrogen entry (21), air inlet (22), sample entry (23) all with mixing cavity (61) intercommunicate, the front end of flame nozzle (6) extends to in quartz glass pipe (7), just the front end of flame nozzle (6) is provided with the ignition point.
5. The FPD flame photometric detector of claim 1, wherein: the avris that the rear end of combustion chamber (3) inboard is located quartz glass pipe (7) is provided with lens hood (71), flame nozzle (6) and combustion chamber (3) switch on each other, lens hood (71) and flame nozzle (6) cup joint.
6. The FPD flame photometric detector of claim 1, wherein: the lower extreme and the detection seat (1) threaded connection of connecting seat (8), the upper end and the photomultiplier (9) threaded connection of connecting seat (8), the inboard lower extreme of connecting seat (8) is provided with quartz glass piece (81), the inboard top that is located quartz glass piece (81) of connecting seat (8) is provided with light filter (82).