CN206648076U

CN206648076U - The igniter of gas-chromatography flame type detector

Info

Publication number: CN206648076U
Application number: CN201720262026.2U
Authority: CN
Inventors: 倪东华
Original assignee: Shimadzu Corp
Current assignee: Shimadzu Corp
Priority date: 2017-03-17
Filing date: 2017-03-17
Publication date: 2017-11-17
Anticipated expiration: 2027-03-17

Abstract

The utility model provides a kind of igniter (100) of gas-chromatography flame type detector, including：Metal cylinder (3), it is arranged on the pedestal (1) of flame type detector；Metal needle (2), it is arranged on the inside of metal cylinder (3) in a manner of being insulated with metal cylinder (3), in the supply path for the inside that the front end of metal needle (2) is inserted into pedestal (1) together with one end of metal cylinder (3)；And DC high-voltage power supply (13), it is electrically connected with metal needle (2), can export high direct voltage to metal needle (2)；And control device (14), it is connected with DC high-voltage power supply (13), control the High voltage output of DC high-voltage power supply, when igniter is lighted a fire, control device (14) control DC high-voltage power supply (13) exports high pressure to metal needle (2), so that the front end electric discharge of metal needle (2), produces electric spark, realizes the igniting of igniter.

Description

The igniter of gas-chromatography flame type detector

Technical field

It the utility model is related to a kind of igniter of gas-chromatography flame type detector.

Background technology

As the flame type detector of gas-chromatography, mainly have:Flame ionic detector (FID), flame photometric detection Device (FPD).By taking flame photometric detector as an example, after ignition device, phosphorous or sulphur organic compound is in hydrogen-rich fire When being burnt in flame, sulphur, phosphorus are excited and launch the spectrum of characteristic wavelength.Characteristic light filters through optical filter, then by photomultiplier transit After pipe carries out opto-electronic conversion, corresponding photoelectric current is produced.Corresponding chromatogram is recorded by record system after amplifier amplifies.

Utility model content

At present, in the igniter of the flame type detector of gas-chromatography, realized usually using the heating of platinum heater strip Igniting, but the manufacture craft of the ignition coil acquires a certain degree of difficulty, and cost is higher, pin is got rusty easily in addition, and corrosion is impaired to be led Open circuit is caused, influences the life-span.And if heating wire surface is contaminated, heating may be caused insufficient, cause loss of ignition.

The utility model is exactly to make in view of the foregoing, and its object is to provide, a kind of cost is low, service life The igniter of gas-chromatography flame type detector long, ignition success rate is high.

A kind of igniter of gas-chromatography flame type detector of the present utility model, including：Metal cylinder, it is arranged on On the pedestal of flame type detector；Metal needle, it is arranged on the inside of metal cylinder in a manner of being insulated with metal cylinder, metal needle Front end is inserted into together with one end of metal cylinder in the supply path of the inside of pedestal；DC high-voltage power supply, itself and metal needle are electric Connection, high direct voltage can be exported to metal needle；And control device, it is connected with DC high-voltage power supply, controls high direct voltage The High voltage output of power supply, when igniter is lighted a fire, control device controls DC high-voltage power supply to export high pressure to metal needle, So that the front end electric discharge of metal needle, produces electric spark, realizes the igniting of igniter.

According to the utility model, by electrion principle, electric spark is produced, the igniting of flame type detector is realized, adds Work making is relatively easy, and high-pressure modular commercially can directly be bought, cheap, and cost of implementation reduces.Firing tip jail Gu being hardly damaged, service life is lifted.

Brief description of the drawings

Fig. 1 is the pie graph of the igniter of gas-chromatography flame type detector of the present utility model.

Fig. 2 is the partial enlarged drawing of the igniter of gas-chromatography flame type detector of the present utility model.

Fig. 3 is the schematic diagram for the installment state for representing gas-chromatography flame type detector and igniter.

Embodiment

Gas-chromatography of the present utility model is said with the igniter 100 of flame type detector referring to the drawings It is bright.

Fig. 1 is the pie graph of the igniter 100 of gas-chromatography flame type detector of the present utility model.Fig. 2 is this The partial enlarged drawing of the gas-chromatography of the utility model igniter 100 of flame type detector.

As shown in figure 1, igniter 100 mainly includes metal cylinder 3, metal needle 2, DC high-voltage power supply 13 and control dress Put 14.

Metal cylinder 3 is process by metal hexagon prism, and one end of hexagon prism is processed to cylindrical shape, and in cylinder Surface has prominent stage portion, and the other end of hexagon prism is machined with external screw thread.

When metal cylinder 3 is installed on the pedestal 1 of flame type detector, one end of metal cylinder 3 is inserted into pedestal 1 In internal supply path, by the stage portion of the one end of metal cylinder 3, the axial direction of metal cylinder 3 is positioned.Then, by U-shaped Fixed plate, metal cylinder 3 is fixed on the pedestal 1 of flame type detector.Pressed from both sides between the stage portion of metal cylinder 3 and pedestal 1 There is O-ring 4.By the external screw thread of the other end of metal cylinder 3 and screwing for nut 10, metal cylinder 3 and single-core cable line 12 described later It is fixed together.Sealing ring 11 is accompanied between the other end and nut 10 of metal cylinder 3.

Metal needle 2 is arranged on the inside of metal cylinder 3, the front end of metal needle 2 and metal cylinder in a manner of being insulated with metal cylinder 3 3 one end is inserted into the supply path of the inside of pedestal 1 together, so as to pass through height between the front end of metal needle 2 and metal cylinder 3 When pressing electric ignition, the gas ignition that will can be flowed in path is supplied.

First insulating part 5 is made up of insulating materials, and metal needle 2 is arranged on the inside of metal cylinder 3 across the first insulating part 5, So that metal needle 2 insulate with metal cylinder 3.Meanwhile first insulating part 5 also acts as and metal needle 2 is fixed in metal cylinder 3 The effect in portion.

DC high-voltage power supply 13 is the power module that high direct voltage is exported to metal needle 2, has the characteristics of heat resisting and pressure resisting.By Control device 14 controls the High voltage output of DC high-voltage power supply, i.e., the switch of DC high-voltage power supply 13 is controlled by control device 14.

DC high-voltage power supply 13 is electrically connected by single-core cable line 12 with metal needle 2.In connection single-core cable line 12 and gold When belonging to pin 2, single-core cable line 12 and metal needle 2 are linked together by adaptor 7, the adaptor 7 uses conductive material, because This, can be electrically connected between single-core cable line 12 and metal needle 2.In the outside of metal needle 2 and single-core cable line 12 by pyrocondensation Pipe 8 is coated, and thus metal needle 2 and single-core cable line 12 are fixed together.

Second insulating part 6 is made up of insulating materials, and heat-shrink tube 8 is across 6 inside for being arranged on metal cylinder 3 of the second insulation. Meanwhile second insulating part 6 also acts as the effect being fixed on heat-shrink tube 8 inside metal cylinder 3.Have in the inside of metal cylinder 3 Stage portion, the stage portion play a part of carrying out axially position to the second insulating part 6.

Fig. 3 is the schematic diagram for the installment state for representing gas-chromatography flame type detector and igniter 100.

As shown in figure 3, when carrying out the detection of sample gas, air and hydrogen are flowed into flame by admission line respectively In type detector, mix, be flowed into together in detector pedestal 1 with sample gas to be detected in detector.

When igniter 100 is lighted a fire, control device 14 controls DC high-voltage power supply 13 to export height to metal needle 2 Pressure so that the front end electric discharge of metal needle 2, produce electric spark, realize the igniting of igniter 100.

Symbol description

100 igniters

1 detector pedestal

2 metal needles

3 metal cylinders

4 O-rings

5 first insulating parts

6 second insulating parts

7 adaptors

8 heat-shrink tubes

9 fixed plates (the first fixture)

10 nuts (the second fixture)

11 sealing rings

12 single-core cable lines

13 DC high-voltage power supplies

14 control devices.

Claims

A kind of 1. gas-chromatography igniter of flame type detector, it is characterised in that including：

Metal cylinder, it is arranged on the pedestal of the flame type detector；

Metal needle, it is arranged on the inside of the metal cylinder, the front end of the metal needle in a manner of being insulated with the metal cylinder With in the supply path of inside that the pedestal is inserted into together with one end of the metal cylinder；

DC high-voltage power supply, it is electrically connected with the metal needle, can export high direct voltage to the metal needle；And

Control device, it is connected with the DC high-voltage power supply, controls the High voltage output of the DC high-voltage power supply, in the point When fiery device is lighted a fire, the control device controls the DC high-voltage power supply to export high pressure to the metal needle so that institute The front end electric discharge of metal needle is stated, electric spark is produced, realizes the igniting of the igniter.
2. the gas-chromatography as claimed in claim 1 igniter of flame type detector, it is characterised in that also include：

The first insulating part being made up of insulating materials, the metal needle are arranged on the metal cylinder across first insulating part It is internal；And

First fixture, the metal cylinder are fixed on by first fixture on the pedestal of the flame type detector.
3. the gas-chromatography as claimed in claim 1 igniter of flame type detector, it is characterised in that also include：

Single-core cable line, the DC high-voltage power supply are electrically connected by the single-core cable line with the metal needle；And

Second fixture, the single-core cable line are fixed on the other end of the metal cylinder by second fixture.
4. the gas-chromatography as claimed in claim 3 igniter of flame type detector, it is characterised in that also include：

Adaptor, the metal needle are electrically connected by the adaptor with the single-core cable line；And

Heat-shrink tube, it coats the metal needle and the single-core cable line so that the metal needle and the single-core cable line are consolidated It is scheduled on together.
5. the gas-chromatography as claimed in claim 4 igniter of flame type detector, it is characterised in that

Also include the second insulating part being made up of insulating materials, the heat-shrink tube is arranged on the gold across second insulating part Belong to the inside of cylinder.