CN217787011U

CN217787011U - High-sensitivity hydrogen flame ionization detector

Info

Publication number: CN217787011U
Application number: CN202220345198.7U
Authority: CN
Inventors: 朱岩; 袁超; 陈晨; 谢兆明
Original assignee: Jiangsu Chunchao Technology Development Co ltd
Current assignee: Jiangsu Chunchao Technology Development Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-11-11
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a high sensitivity hydrogen flame ionization detector, include: the temperature measuring device comprises a base, a connecting block and a shell, wherein the shell is fixedly connected to the upper side of the base through the connecting block, the upper end of the shell is connected with a temperature measuring block, and the side wall of the shell is connected with a collecting polar tube and a bias tube; the inside nozzle holder, nozzle, collecting vessel, insulating column and the pressure cap of being provided with of shell, nozzle holder fixed connection is in the upper end of connecting block, and the lower extreme and the nozzle seat of nozzle are connected, and the upper end and the insulating column of nozzle are connected, and the upper end at the insulating column is connected to the collecting vessel. The utility model discloses processing and subassembly are simple, and it is convenient to maintain, and the temperature measurement piece can arrange the temperature element in a collocation manner, and real-time supervision flame state, the external point firearm of collocation can realize automatic ignition, has avoided the loaded down with trivial details operation of manual ignition to can be through configuring gas vent pipeline to emission house steward, thereby reach and other external sealed effects, prevent external environment's temperature, pressure, factors such as humidity influence the normal burning of flame.

Description

High-sensitivity hydrogen flame ionization detector

Technical Field

The utility model relates to a gas chromatography detector technical field especially relates to a high sensitivity hydrogen flame ionization detector.

Background

A hydrogen flame ionization detector is one of the most commonly used detectors for gas chromatography instruments. The detector is characterized in that hydrogen is used as fuel gas, air or zero gas is used as combustion-supporting gas, organic matters in the carrier gas are chemically ionized in a combustion state, ions which are higher than base flow by several orders of magnitude are generated by ionization, and weak ion flow is formed under the directional action of a bias electric field. The ion flow (10-12 to 10-8A) is amplified by a high resistance (106 to 1011 omega) to become an electric signal which is in direct proportion to the concentration of the organic compounds entering the flame, and the organic matters of the analysis gas can be quantitatively analyzed according to the magnitude of the electric signal.

The existing hydrogen flame ionization detector generally adopts manual ignition, is mostly designed in an open structure, when flame is extinguished, hydrogen is excessive in quantity, great potential safety hazard occurs, and when external air pressure changes, the ionization process of organic matters in diffusion hydrogen flame can be influenced to a certain extent, so that the sensitivity of the detector is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a high-sensitivity hydrogen flame ionization detector.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high sensitivity hydrogen flame ionization detector comprising: the temperature measuring device comprises a base, a connecting block and a shell, wherein the shell is fixedly connected to the upper side of the base through the connecting block, the upper end of the shell is connected with a temperature measuring block, and the side wall of the shell is connected with a collecting polar tube and a bias tube; the utility model discloses a portable gas water heater, including shell, nozzle seat, nozzle, collecting vessel, insulating cylinder and pressure cap, nozzle seat fixed connection is in the upper end of connecting block, the lower extreme and the nozzle seat of nozzle are connected, and the upper end and the insulating cylinder of nozzle are connected, the upper end at the insulating cylinder is connected to the collecting vessel, press cap fixed connection in the upper end of collecting vessel.

Preferably, the side wall of the base is provided with a hydrogen inlet, an air inlet and a carrier gas inlet, the hydrogen inlet is communicated with the carrier gas inlet and communicated with the nozzle, and the air inlet is communicated with a hole arranged on the connecting block and a hole on the nozzle seat and communicated with the periphery of the nozzle.

Preferably, the side wall of the shell is provided with a collecting electrode hole, a bias voltage hole, an igniter hole, a vent hole and a temperature measuring hole, and the shell is sealed after being connected with the collecting electrode tube, the bias voltage tube, the igniter, the temperature measuring thermocouple and the vent hole through a connecting block.

Preferably, the center of the collector electrode hole corresponds to the inner nozzle, the center of the bias voltage hole corresponds to the collecting barrel, the temperature measuring hole corresponds to the center of the shell, and the longitudinal height of the center of the discharge hole on the side wall of the shell is not lower than that of the center of the igniter hole.

Preferably, the base, the connecting block, the nozzle holder, the nozzle, the insulating column, the collecting barrel, the pressing cap, the shell and the temperature measuring block correspond to each other in axial center.

Preferably, the connecting block, the shell and the temperature measuring block are all made of aluminum, the base, the nozzle, the collecting pole tube and the bias tube are all made of 316L materials, and the nozzle seat, the insulating column and the pressing cap are all made of temperature-resistant tetrafluoro materials.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses processing and subassembly are simple, and it is convenient to maintain, and the temperature measurement piece can arrange the temperature element in a collocation manner, and real-time supervision flame state, the external point firearm of collocation can realize automatic ignition, has avoided the loaded down with trivial details operation of manual ignition to can be through configuring gas vent pipeline to emission house steward, thereby reach and other external sealed effects, prevent external environment's temperature, pressure, factors such as humidity influence the normal burning of flame.

Drawings

Fig. 1 is a schematic diagram of an external structure of a high-sensitivity hydrogen flame ionization detector according to the present invention;

fig. 2 isbase:Sub>A sectional view of the structure taken along linebase:Sub>A-base:Sub>A of fig. 1.

In the figure: the device comprises a base 1, a connecting block 2, a shell 3, a temperature measuring block 4, a nozzle seat 5, a nozzle 6, an insulating column 7, a collecting barrel 8, a pressure cap 9, a bias pressure pipe 10, a collecting polar tube 11, a hydrogen inlet 12, an air inlet 13, a carrier gas inlet 14, a collecting polar hole 15, a bias pressure hole 16, an igniter hole 17, an outlet hole 18 and a temperature measuring hole 19.

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.

Referring to fig. 1-2, a high sensitivity hydrogen flame ionization detector includes: base 1, connecting block 2 and shell 3, shell 3 passes through connecting block 2 fixed connection at the upside of base 1, the upper end of shell 3 is connected with temperature measurement piece 4, and is connected with on the lateral wall of shell 3 and collects polar tube 11 and partial pressure pipe 10, and is specific, be provided with hydrogen import 12, air intlet 13 and carrier gas import 14 on the lateral wall of base 1, hydrogen import 12 communicates with each other and accesss to in the nozzle 6 with carrier gas import 14, the hole that sets up on air intlet 13 and the connecting block 2 communicates with each other and accesss to the nozzle 6 periphery with the hole on the nozzle holder 5.

The nozzle holder 5, the nozzle 6, the collecting barrel 8, the insulating column 7 and the pressure cap 9 are arranged inside the shell 3, the nozzle holder 5 is fixedly connected to the upper end of the connecting block 2, the lower end of the nozzle 6 is connected to the nozzle holder 5, the upper end of the nozzle 6 is connected to the insulating column 7, the collecting barrel 8 is connected to the upper end of the insulating column 7, the pressure cap 9 is fixedly connected to the upper end of the collecting barrel 8, specifically, a collecting pole hole 15, a bias voltage hole 16, an igniter hole 17, a discharge hole 18 and a temperature measuring hole 19 are arranged on the side wall of the shell 3, the shell 3 is sealed with a collecting pole tube 11, a bias voltage tube 10, an igniter, a temperature measuring thermocouple and a discharge hole joint through the connecting block 2, and the axial centers of the base 1, the connecting block 2, the nozzle holder 5, the nozzle 6, the insulating column 7, the collecting barrel 8, the pressure cap 9, the shell 3 and the temperature measuring block 4 correspond to each other.

The center of the collector electrode hole 15 corresponds to the inner nozzle 6, the center of the bias voltage hole 16 corresponds to the collecting barrel 8, the temperature measuring hole 19 corresponds to the center of the shell 3, the longitudinal height of the center of the vent hole 18 on the side wall of the shell 3 is not lower than that of the center of the igniter hole 17, the connecting block 2, the shell 3 and the temperature measuring block 4 are all made of aluminum, the base 1, the nozzle 6, the collector electrode tube 11 and the bias voltage tube 10 are all made of 316L materials, and the nozzle seat 5, the insulating column 7 and the pressure cap 9 are all made of temperature-resistant PTFE materials.

The utility model discloses a detector two parts inside and outside, the outside includes base 1, connecting block 2, shell 3, temperature measurement piece 4, collect utmost point pipe 11 and bias voltage pipe 10, wherein base 1 contains three air inlet, be the hydrogen respectively, the air, the carrier gas import, the multiple outside adapter of accessible configuration, most of gas chromatograph on the compatible market, the connecting block can 2 improve the gas tightness between base 1 and the shell 3, shell 3 contains the bias voltage interface, collect the union coupling, some firearm interface, processing and subassembly are simple, easy maintenance, the temperature measurement piece can arrange the temperature measurement component in pairs, real-time supervision flame state, the outside point firearm of arranging, can realize autoignition, the loaded down with trivial details operation of manual ignition has been avoided, and can be through configuration gas vent pipeline to emission house steward, thereby reach and other external sealing effect, prevent external environment's temperature, pressure, factor such as humidity influences the normal combustion of flame.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high sensitivity hydrogen flame ionization detector, comprising: the temperature measurement device comprises a base (1), a connecting block (2) and a shell (3), wherein the shell (3) is fixedly connected to the upper side of the base (1) through the connecting block (2), the upper end of the shell (3) is connected with a temperature measurement block (4), and the side wall of the shell (3) is connected with a collecting polar tube (11) and a bias tube (10); the utility model discloses a novel nozzle assembly, including shell (3), casing (3) inside be provided with nozzle holder (5), nozzle (6), collecting vessel (8), insulated column (7) and press cap (9), nozzle holder (5) fixed connection is in the upper end of connecting block (2), the lower extreme and the nozzle holder (5) of nozzle (6) are connected, and the upper end and the insulated column (7) of nozzle (6) are connected, the upper end at insulated column (7) is connected in collecting vessel (8), press cap (9) fixed connection in the upper end of collecting vessel (8).

2. The high-sensitivity hydrogen flame ionization detector according to claim 1, wherein the side wall of the base (1) is provided with a hydrogen inlet (12), an air inlet (13) and a carrier gas inlet (14), the hydrogen inlet (12) is communicated with the carrier gas inlet (14) and leads to the nozzle (6), and the air inlet (13) is communicated with the hole arranged on the connecting block (2) and the hole arranged on the nozzle holder (5) and leads to the periphery of the nozzle (6).

3. The high-sensitivity hydrogen flame ionization detector according to claim 1, characterized in that a collector electrode hole (15), a bias voltage hole (16), an igniter hole (17), a vent hole (18) and a temperature measurement hole (19) are formed in the side wall of the housing (3), and the housing (3) is sealed with the collector electrode tube (11), the bias voltage tube (10), the igniter, the temperature measurement thermocouple and the vent hole through a connecting block (2).

4. A highly sensitive hydrogen flame ionization detector according to claim 3, characterized in that the collector electrode hole (15) is centered with respect to the inner nozzle (6), the bias voltage hole (16) is centered with respect to the collector barrel (8), the temperature measurement hole (19) is centered with respect to the housing (3), and the longitudinal height of the center of the discharge hole (18) in the side wall of the housing (3) is not lower than the center of the igniter hole (17).

5. The high-sensitivity hydrogen flame ionization detector according to claim 1, wherein the base (1), the connecting block (2), the nozzle holder (5), the nozzle (6), the insulating column (7), the collecting barrel (8), the pressing cap (9), the housing (3) and the temperature measuring block (4) correspond to each other in axial center.

6. The high-sensitivity hydrogen flame ionization detector according to claim 1, wherein the connecting block (2), the housing (3) and the temperature measuring block (4) are made of aluminum, the base (1), the nozzle (6), the collecting pole tube (11) and the bias tube (10) are made of 316L materials, and the nozzle seat (5), the insulating column (7) and the pressure cap (9) are made of temperature-resistant PTFE materials.