CN214201332U

CN214201332U - Automatic flame monitoring device of hydrogen flame ionization detector of gas chromatograph

Info

Publication number: CN214201332U
Application number: CN202120098369.6U
Authority: CN
Inventors: 王晓霞; 孙茂云
Original assignee: Beijing Ruizecheng Instrument Technology Co ltd
Current assignee: Beijing Ruizecheng Instrument Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-14
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a gas chromatograph hydrogen flame ionization detector flame automatic monitoring device, including bottom plate and box, the casing is installed through the bolt in the axle center department of bottom plate top outer wall, and the welding of axle center department of casing top outer wall has the outlet pipe, and the welding of axle center department of casing bottom outer wall has the sample inlet tube that runs through the bottom plate, and the threaded connection of axle center department of casing bottom inner wall has the flame nozzle who is linked together with the sample inlet tube, and flame nozzle's exit end sprays there is flame. The utility model discloses the thermocouple makes the flame detection accuracy more reliable, and direct signal of telecommunication output is favorable to the automation of flame monitoring very much, and the detection mode is simple, the monitoring is timely, the result is reliable, light filter, photomultiplier, amplifier, power supply box and record display screen for flame can obtain further detection, can demonstrate monitoring data is timely, very big promotion the accuracy of flame detection data.

Description

Automatic flame monitoring device of hydrogen flame ionization detector of gas chromatograph

Technical Field

The utility model relates to an analysis and test instrument technical field especially relates to a gas chromatograph hydrogen flame ionization detector flame automatic monitoring device.

Background

The hydrogen flame ionization detector is one of the most widely used gas chromatograph detectors, and can analyze organic substances having a boiling point of 400 degrees or less. The principle is that hydrogen-rich flame formed by combustion of hydrogen and air ionizes organic matters in the flame, the generated ions form an ion flow signal under the action of an applied electric field, and the signal can quantitatively analyze the concentration of the organic matters in the flame after being amplified by a micro-current amplifier; before the detector is used, ignition operation is firstly carried out, an electronic ignition gun or an ignition wire is generally used for ignition, and whether flame is ignited or not is judged after the ignition operation.

At present, methods for judging whether a flame is ignited or not include:

1. and a cold metal object is placed at the exhaust port of the detector, whether condensed water drops exist on the metal object or not is judged, and if the condensed water drops exist, the flame is ignited.

2. And judging whether the flame is ignited or not by using the variation of the amplified ion current signal of the detector before and after ignition.

However, the first method is a manual operation, and cannot be automated, and the second method is an indirect discrimination method, which is not highly reliable, and it is difficult to discriminate whether a fire is extinguished after the fire is ignited, and a complicated electronic circuit is required. Therefore, it is desirable to design an automatic flame monitoring device for a hydrogen flame ionization detector of a gas chromatograph to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the first method is manual operation, which can not realize automation, the second method is indirect discrimination method, the reliability is not high, and the discrimination of putting out a fire after the fire is difficult, the complex electronic circuit matching defect is needed, and the automatic flame monitoring device of the gas chromatograph hydrogen flame ionization detector is provided.

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

an automatic flame monitoring device of a hydrogen flame ionization detector of a gas chromatograph comprises a bottom plate and a box body, wherein a shell is arranged at the axis of the outer wall of the top of the bottom plate through a bolt, an outlet pipe is welded at the axle center of the outer wall at the top of the shell, a sample inlet pipe penetrating through the bottom plate is welded at the axle center of the outer wall at the bottom of the shell, and the axis of the inner wall of the bottom of the shell is in threaded connection with a flame nozzle communicated with the sample inlet pipe, the outlet end of the flame nozzle sprays flame, and the top of the outer wall of one side of the shell is welded with a column casing, the other end of the column casing far away from the shell is connected with a cylinder cover in a threaded manner, and the axis of the cylinder cover is connected with a thermocouple extending into the shell body through a thread, an oxygen inlet pipe extending into the shell body is welded at the center of the outer wall at one side of the bottom plate, and a hydrogen inlet pipe communicated with the sample inlet pipe is welded at the bottom of the bottom plate close to the oxygen inlet pipe.

Furthermore, a window is arranged in the center of the outer wall of the other side of the column casing, which is far away from the shell, and a channel is arranged on the outer wall of one side of the shell, which is close to the window, through a bolt.

Furthermore, a power box is installed at the bottom of the outer wall of one side of the box body through bolts, and a box door is movably connected to the outer wall of one side of the power box through a hinge.

Further, the amplifier is installed through the bolt in the center department of box top outer wall, and has a support arm through bearing swing joint in one side of box top outer wall, the other end that the box was kept away from to the support arm is installed the record display screen through the bolt.

Further, the other end of the channel far away from the shell is installed at the center of the outer wall of one side of the box body through a bolt, an optical filter which is located on the same horizontal line with the channel is installed on the inner wall of the top portion, close to one side of the channel, of the box body through a bolt, and a photomultiplier which is located on the same horizontal line with the optical filter is installed at the center of the inner wall of one side of the box body through a bolt.

Furthermore, the photomultiplier, the amplifier, the power box and the recording display screen are electrically connected through a lead.

The utility model has the advantages that:

1. through the thermocouple that sets up for flame detection accuracy is more reliable, and direct signal of telecommunication output is favorable to flame monitoring's automation very much, and the detection mode is simple, the monitoring is timely, the result is reliable.

2. Through the oxygen inlet pipe and the hydrogen inlet pipe that set up, guarantee the stability of flame to guarantee the exactness of testing result.

3. Through the filter, photomultiplier, amplifier, power supply box and the record display screen that set up for flame can obtain further detection, can show monitoring data is timely, very big promotion the accuracy of flame detection data.

Drawings

Fig. 1 is a schematic structural view of an automatic flame monitoring device of a hydrogen flame ionization detector of a gas chromatograph according to the present invention;

fig. 2 is a schematic structural view of a housing of an automatic flame monitoring device of a hydrogen flame ionization detector of a gas chromatograph;

fig. 3 is a schematic diagram of a thermocouple structure of an automatic flame monitoring device of a hydrogen flame ionization detector of a gas chromatograph;

fig. 4 is the utility model provides a box structure sketch map of gas chromatograph hydrogen flame ionization detector flame automatic monitoring device.

In the figure: the device comprises a base plate 1, a shell 2, a channel 3, a box 4, an outlet pipe 5, a sample inlet pipe 6, an oxygen inlet pipe 7, a hydrogen inlet pipe 8, a window 9, a flame nozzle 10, a flame 11, a column 12, a column cover 13, a thermocouple 14, an amplifier 15, a light filter 16, a photomultiplier 17, a supporting arm 18, a recording display screen 19 and a power supply box 20.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, an automatic flame monitoring device for a hydrogen flame ionization detector of a gas chromatograph comprises a bottom plate 1 and a box 4, wherein a shell 2 is installed at the axis of the outer wall of the top of the bottom plate 1 through bolts, an outlet pipe 5 is welded at the axis of the outer wall of the top of the shell 2, a sample inlet pipe 6 penetrating through the bottom plate 1 is welded at the axis of the outer wall of the bottom of the shell 2, a flame nozzle 10 communicated with the sample inlet pipe 6 is connected at the axis of the inner wall of the bottom of the shell 2 through threads, flame 11 is sprayed at the outlet end of the flame nozzle 10, a column 12 is welded at the top of the outer wall of one side of the shell 2, a cylinder cover 13 is connected at the other end of the column 12 far away from the shell 2 through threads, a thermocouple 14 extending into the shell 2 is connected at the axis of the cylinder cover 13 through threads, an oxygen inlet pipe 7 extending into the shell 2 is welded at the center of the outer wall of one side of the bottom plate 1, and the bottom welding that bottom plate 1 is close to oxygen inlet tube 7 has the hydrogen inlet tube 8 that is linked together between the sample inlet tube 6, and thermocouple 14 makes flame detection accuracy more reliable, and direct signal of telecommunication output is favorable to flame monitoring's automation very much, and the detection mode is simple, the monitoring is timely, the result is reliable.

Further, a window 9 is arranged in the center of the outer wall of the other side of the casing 2 far away from the column casing 12, and a channel 3 is installed on the outer wall of one side of the casing 2 close to the window 9 through a bolt.

Furthermore, the power box 20 is installed at the bottom of the outer wall of one side of the box body 4 through a bolt, and the box door is movably connected to the outer wall of one side of the power box 20 through a hinge, so that the power box 20 is more convenient to detect.

Further, amplifier 15 is installed through the bolt in the center department of box 4 top outer wall, and has a support arm 18 through bearing swing joint in one side of box 4 top outer wall, and the other end that box 4 was kept away from to support arm 18 is installed through the bolt and is recorded display screen 19, and record display screen 19 can carry out timely effectual show with the detection data, and then has promoted the convenience of detection data record.

Further, the other end of the channel 3, which is far away from the shell 2, is installed at the center of the outer wall of one side of the box body 4 through a bolt, the inner wall of the top of the box body 4, which is close to one side of the channel 3, is installed with a light filter 16 which is located on the same horizontal line with the channel 3 through a bolt, and the center of the inner wall of one side of the box body 4 is installed with a photomultiplier 17 which is located on the same horizontal line with the light filter 16.

Further, photomultiplier 17, amplifier 15, power supply box 20 and record display screen 19 are electric connection through the wire between, and the flame passes through window 9 and shines on photomultiplier 17 through passageway 3 and light filter 16, then in time demonstrates the flame data under amplifier 15 and record display screen 19's effect, and then has promoted the accuracy of flame detection data.

The working principle is as follows: when this gas chromatograph hydrogen flame ionization detector flame automatic monitoring device used, flame passed through window 9 and shines on photomultiplier 17 through passageway 3 and light filter 16, then show flame data in time under amplifier 15 and record display screen 19's effect, and then promoted the accuracy of flame detection data, thermocouple 14 makes the flame detection accuracy more reliable simultaneously, direct signal of telecommunication output, be favorable to the automation of flame monitoring very much, the detection mode is simple, the monitoring is timely, the result is reliable.

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. The utility model provides a gas chromatograph hydrogen flame ionization detector flame automatic monitoring device, includes bottom plate (1) and box (4), its characterized in that, casing (2) are installed through the bolt in the axle center department of bottom plate (1) top outer wall, and the welding of axle center department of casing (2) top outer wall has outlet pipe (5), the welding of axle center department of casing (2) bottom outer wall has sample inlet tube (6) that runs through bottom plate (1), and the axle center department threaded connection of casing (2) bottom inner wall has flame nozzle (10) that are linked together with sample inlet tube (6), the exit end of flame nozzle (10) sprays has flame (11), and the welding of the top of casing (2) one side outer wall has cylinder (12), the other end threaded connection that casing (2) were kept away from to cylinder (12) has cover (13), and the axle center threaded connection of cover (13) has thermocouple (14) that extend to casing (2) inside, the welding of center department of bottom plate (1) one side outer wall has oxygen inlet tube (7) that extend to casing (2) inside, and bottom welding that bottom plate (1) is close to oxygen inlet tube (7) has hydrogen inlet tube (8) that are linked together between with sample inlet tube (6).

2. The automatic flame monitor device for a gas chromatograph hydrogen flame ionization detector as recited in claim 1, wherein a window (9) is disposed at the center of the outer wall of the housing (2) at the other side far from the column (12), and the channel (3) is mounted on the outer wall of the housing (2) at the side close to the window (9) by bolts.

3. The automatic flame monitor device for a gas chromatograph-hydrogen flame ionization detector as recited in claim 1, wherein a power box (20) is mounted on a bottom of an outer wall of one side of the housing (4) through a bolt, and a box door is movably connected to the outer wall of one side of the power box (20) through a hinge.

4. The automatic flame monitoring device for the gas chromatograph hydrogen flame ionization detector as recited in claim 1, wherein an amplifier (15) is mounted at the center of the outer wall of the top of the box body (4) through a bolt, a supporting arm (18) is movably connected to one side of the outer wall of the top of the box body (4) through a bearing, and a recording display screen (19) is mounted at the other end, away from the box body (4), of the supporting arm (18) through a bolt.

5. The automatic flame monitor for a gas chromatograph-hydrogen flame ionization detector as recited in claim 2, wherein the other end of the channel (3) away from the housing (2) is mounted at the center of the outer wall of one side of the box body (4) by a bolt, the top inner wall of one side of the box body (4) close to the channel (3) is mounted with a filter (16) on the same horizontal line with the channel (3) by a bolt, and the center of the inner wall of one side of the box body (4) is mounted with a photomultiplier (17) on the same horizontal line with the filter (16) by a bolt.

6. The automatic flame monitor device for a gas chromatograph-hydrogen flame ionization detector as recited in claim 5, wherein the photomultiplier (17), the amplifier (15), the power box (20) and the recording display screen (19) are electrically connected by a wire.