Improved infrared analyzer

Abstract

The utility model discloses an improved infrared analyzer which comprises an analyzer host, the air inlet end of the analyzer host is connected with a four-way valve, and two passages of the four-way valve are respectively connected with an N2 flow meter and an air flow meter; the gas inlet end of the N2 flow meter is connected with a flow stabilizing valve, the gas inlet end of the flow stabilizing valve is provided with a drying pipe, and the gas inlet end of the drying pipe is connected with N2 conveying equipment; a built-in electromagnetic pump of the analyzer is moved out from the inside, instrument instability caused by vibration is reduced, circuit control is irrelevant to an original analyzer so as to reduce interference to the instrument, an original manual gas switching method is changed into a four-way valve switching method, the connection mode of a gas path system is improved, synchronous control over the circuit and the gas path is achieved, and the reliability of the analyzer is improved. Flow control and sample introduction display are added, and an N2 indicating lamp and a sample introduction indicating lamp display circuit are added in order to distinguish sample gas from N2, so that semi-automatic sample introduction is realized, operation procedures are simplified, and sample introduction is accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument analysis, and specifically relates to an improved infrared analyzer. Background Art

[0002] In the relevant technology, infrared is an electromagnetic wave with a wavelength between microwave and visible light, with a wavelength between 760 nanometers and 1 millimeter, which is longer than red light. At present, environmental protection, environmental testing, health supervision, disease prevention and control, and scientific research institutes all need to detect gas and thus use gas detection instruments. Due to the various characteristics of gas, especially the selective absorption of infrared by gas, we can choose to detect gas by combining infrared with gas.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] The traditional method of using a gas analyzer is to connect the gas samples sent from each sampling point to the inlet of the instrument, then start the electromagnetic pump installed in the instrument to draw the sample into the analysis chamber, turn off the pump after a few minutes, remove the sample and pass it into the N 2 This method of operation not only makes the analysis steps complicated and the analysis cycle long, but also has a significant impact on the working state of the instrument every time a sample is injected, the gas is cut off, or the pump is started or shut down, reducing the signal-to-noise ratio and the sensitivity of the instrument. Utility Model Content

[0005] The purpose of the utility model is to provide an improved infrared analyzer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an improved infrared analyzer, comprising an analyzer host, the air inlet end of the analyzer host is connected to a four-way valve, two of the four-way valve passages are respectively connected to N 2 Flow meter and air flow meter; the N 2 The air inlet end of the flow meter is connected to a flow stabilizing valve, the air inlet end of the flow stabilizing valve is provided with a drying pipe, and the air inlet end of the drying pipe is connected to N 2 Conveying equipment; the air flow meter is externally connected to an electromagnetic pump, the air inlet end of the electromagnetic pump is provided with a filter bottle, and the inlet end of the filter bottle is connected to the sample gas and standard gas conveying equipment.

[0007] Preferably, the four-way valve is provided with an injection handle.

[0008] Preferably, the N 2 Flow meter electrical connection has N 2 Indicator light, the electromagnetic pump is electrically connected to a sample gas indicator light.

[0009] Preferably, the N2 The indicator light and the sample gas indicator light are both electrically connected to a transformer, and the transformer is externally connected to a 220V circuit.

[0010] Preferably, the analyzer host comprises an infrared light source and an air chamber, and the infrared light source is arranged on the side wall of the air chamber.

[0011] Preferably, a gas path analysis device, a photoelectric analyzer and a gas chamber regulator are provided on the panel side of the gas chamber, and the gas path analysis device and the photoelectric analyzer are electrically connected to the infrared light source respectively.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the improved infrared analyzer provided by the utility model removes the electromagnetic pump built into the analyzer from the inside, reduces the instability of the instrument caused by vibration, makes the circuit control independent of the original analyzer, and reduces the interference to the instrument. The original manual gas switching method is changed to switching with a four-way valve, improves the connection mode of the gas circuit system, realizes synchronous control of the circuit and gas circuit, and adds flow control and sample injection display. In order to distinguish the injected sample gas and N 2 , increasing N 2 The indicator light and the sample gas indicator light display circuit realize semi-automatic sample injection, simplify the operation procedure, and make the sample injection accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a system schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the mainframe of the analyzer of the utility model.

[0015] In the figure: 1. Analyzer host; 2. Four-way valve; 3. N 2 Flow meter; 4. Air flow meter; 5. Flow stabilizing valve; 6. Drying tube; 7. Electromagnetic pump; 8. Filter bottle; 9. Injection handle; 10. N 2 Indicator light; 11. Sample gas indicator light; 12. Transformer; 13. Gas path analysis device; 14. Photoelectric analyzer; 15. Gas chamber regulator. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2The utility model provides a technical solution: an improved infrared analyzer, comprising an analyzer host 1, the air inlet end of the analyzer host 1 is connected to a four-way valve 2, two of the passages of the four-way valve 2 are respectively connected to N 2 The flow meter 3 and the air flow meter 4 use the four-way valve 2 to enter the sample gas, and N2 rotates at a fixed angle. Micro contact switches are installed at the two ends of the four-way valve 2. In this way, when each gas is changed to enter the analysis room, and whether the gas valve is switched to the right position, etc., can be detected by N 2 The indicator light 10 and the sample gas indicator light 11 are displayed;

[0018] N 2 The air inlet end of the flow meter 3 is connected to a flow stabilizing valve 5, and the air inlet end of the flow stabilizing valve 5 is provided with a drying pipe 6, and the air inlet end of the drying pipe 6 is connected to N 2 The principles of conveying equipment, pressure stabilizing valve and pressure reducing valve are very similar, but because of their different functions, the structural design is quite different. Unlike the pressure reducing valve, the main purpose of the pressure stabilizing valve is to control the outlet pressure to remain stable when the resistance of the carrier gas at the valve outlet changes. Of course, when the inlet pressure changes slightly, the pressure stabilizing valve should also be able to keep the outlet pressure stable;

[0019] The air flow meter 4 is externally connected to the electromagnetic pump 7. The air inlet end of the electromagnetic pump 7 is provided with a filter bottle 8. The air inlet end of the filter bottle 8 is connected to the sample gas and standard gas conveying equipment. The electromagnetic pump is a chemical process pump that uses modern magnetic mechanics principles and permanent magnets to achieve contactless indirect transmission. When the motor drives the outer rotor assembly to rotate, the magnetic lines of force through the isolation sleeve drive the inner rotor assembly and the impeller to rotate synchronously at the same time through the action of the magnetic field. The medium is completely enclosed in the static isolation sleeve, thereby achieving the purpose of pumping the medium without leakage, and completely solving the shaft seal leakage of the mechanical transmission pump. It is a fully sealed, leak-free, pollution-free new industrial pump. The pump is a pump in which the current-carrying fluid in the magnetic field flows in a certain direction under the action of electromagnetic force. A device that uses the interaction between the magnetic field and the current in the conductive fluid to cause the fluid to generate a pressure gradient under the action of electromagnetic force, thereby promoting the movement of the fluid. The filter bottle 8 is set to filter the sample gas and the standard gas.

[0020] Specifically, the four-way valve 2 is provided with a sampling handle 9 .

[0021] Specifically, N 2 Flow meter 3 is electrically connected to N 2 The indicator light 10 and the electromagnetic pump 7 are electrically connected with a sample gas indicator light 11.

[0022] Specifically, N 2The indicator light 10 and the sample gas indicator light 11 are electrically connected to a transformer 12, which is connected to a 220V circuit. A micro-contact switch is installed at the two ends of the four-way valve 2, so that each time a gas is changed to enter the analysis room, and whether the gas valve is switched to the right position, etc., can be detected by N 2 The indicator light 10 and the sample gas indicator light 11 are displayed.

[0023] Specifically, the analyzer host 1 includes an infrared light source and an air chamber, and the infrared light source is arranged on the side wall of the air chamber.

[0024] Specifically, a gas path analysis device 13, a photoelectric analyzer 14 and a gas chamber regulator 15 are provided on the panel side of the gas chamber. The gas path analysis device 13 and the photoelectric analyzer 14 are electrically connected to the infrared light source respectively. The gas path analysis device 13 includes a reflective gas chamber, a gas path amplifier and a display. The gas path amplifier is installed in the reflective gas chamber and is connected to the display. Through the gas path amplifier, the inspection data is analyzed in an expanded manner so that the components and proportions of each part of the air can be quickly analyzed. The photoelectric analyzer 14 includes a light cutter, a filter and a photoelectric micro Analyzer, the filter is fixed on one side of the light cutter, the photoelectric micro-analyzer is connected to the light cutter, through the action of the light cutter and the filter, the absorption rate and refractive index of infrared rays can be detected, which is convenient for monitoring the density of the gas, the gas chamber regulator 15 includes a sealing plate, a vacuum pump and a driving shaft, the vacuum pump is connected to the sealing plate through the driving shaft, the gas is pumped into the gas chamber through the vacuum pump, and the sealing plate is driven to move through the driving shaft, so that the size of the gas chamber can be adjusted at any time, and there are convex points on the sealing plate, and the setting of the convex points makes the sealing effect of the sealing plate better.

[0025] Working principle: When the utility model is working, the electromagnetic pump 7 installed in the analyzer body 1 is removed from the inside to reduce the instability of the instrument caused by vibration, so that the circuit control is independent of the original analyzer to reduce interference with the instrument, and the original manual gas switching method is changed to the four-way valve 2 switching, which improves the connection mode of the gas circuit system and realizes the synchronous control of the circuit and gas circuit. 2 Flow meter 3 and air flow meter 4 are added with flow control and injection display to distinguish the injected sample gas and N 2 , increasing N 2 The indicator light 10 and the sample gas indicator light 11 display circuit realize semi-automatic sample injection, simplify the operation procedure, and make the sample injection accurate and reliable.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved infrared analyzer, characterized in that: It comprises an analyzer mainframe (1), wherein the air inlet end of the analyzer mainframe (1) is connected to a four-way valve (2), and two passages of the four-way valve (2) are respectively connected to an N2 flowmeter (3) and an air flowmeter (4); The air inlet end of the N2 flow meter (3) is connected to a flow stabilizing valve (5), the air inlet end of the flow stabilizing valve (5) is provided with a drying pipe (6), and the air inlet end of the drying pipe (6) is connected to the N2 conveying equipment; The air flow meter (4) is externally connected to an electromagnetic pump (7), and a filter bottle (8) is provided at the air inlet end of the electromagnetic pump (7), and the air inlet end of the filter bottle (8) is connected to the sample gas and standard gas delivery equipment.

2. An improved infrared analyzer according to claim 1, characterized in that: The four-way valve (2) is provided with a sampling handle (9).

3. An improved infrared analyzer according to claim 1, characterized in that: The N2 flowmeter (3) is electrically connected to an N2 on indicator light (10), and the electromagnetic pump (7) is electrically connected to a sample gas on indicator light (11).

4. An improved infrared analyzer according to claim 3, characterized in that: The N2 indicator light (10) and the sample gas indicator light (11) are both electrically connected to a transformer (12), and the transformer (12) is externally connected to a 220V circuit.

5. An improved infrared analyzer according to claim 1, characterized in that: The analyzer host (1) comprises an infrared light source and an air chamber, wherein the infrared light source is arranged on the side wall of the air chamber.

6. An improved infrared analyzer according to claim 5, characterized in that: A gas path analysis device (13), a photoelectric analyzer (14) and a gas chamber regulator (15) are provided on the panel side of the gas chamber. The gas path analysis device (13) and the photoelectric analyzer (14) are electrically connected to the infrared light source respectively.

Images