A three-channel detector for an elemental analyzer

Abstract

The utility model discloses a three -way detector of element analyzer, including pool body, resistance bridge, shell, power supply line and signal line, pool body: for the detector main part, for the corrosion -resistant high -purity brass material, the surface has screw hole for connecting shell, and inside has three -way gas passage. Three gas passage inlets are connected respectively helium gas transmission pipeline one, helium gas reference gas input pipeline, helium gas transmission pipeline two. Three gas passage outlets are connected respectively helium gas carrier gas output pipeline one, helium gas reference gas output pipeline, helium gas carrier gas output pipeline two, resistance bridge: be located the detector pool body top, and every two resistances are a group and are screwed into the gas passage, and 6 resistances pass through parallel and constitute the bridge. Power supply line: provide test power supply for resistance, signal line: gather the signal change of resistance, shell: 316 stainless steel material, and the surface has 2 through -holes, and is fixed to the pool body through the screw of screwing into through -hole, plays the role of protecting the detector.

Description

Technical Field

[0001] This utility model relates to the field of multi-channel detector technology for elemental analyzers, specifically a three-channel detector for elemental analyzers. Background Technology

[0002] An elemental analyzer is a precision instrument used to determine the elemental composition and content of substances. It is widely used in fields such as chemistry, materials science, environmental monitoring, pharmaceuticals, and geological exploration. Its core principle is to decompose the sample through physical or chemical means, use chromatographic techniques to detect the characteristic signals of elements, and then quantitatively analyze the target components. These instruments play an irreplaceable role in quality control, new material development, and pollutant tracing, and are key analytical tools in scientific research and industry.

[0003] The detector is a key component of an elemental analyzer, primarily used for signal detection of samples. Most existing detectors are dual-channel detectors, capable of testing only one analytical mode at a time. For example, switching from CHNS mode to O mode requires changing the column and detector settings, involving instrument cooling and heating. Since the cooling and heating times of elemental analyzers are excessively long (typically exceeding 2 hours), it is difficult to complete mode switching within a single day, thus increasing experimental time. A three-channel detector, however, can simultaneously read sample signals from both CHNS and O modes, eliminating the need for hardware mode switching. This allows experiments in both analytical modes to be performed concurrently within the same day, significantly improving experimental efficiency. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the existing defects and provide a three-channel detector for an elemental analyzer that can simultaneously test CHNS mode and O mode, thereby improving experimental efficiency and effectively solving the problem of wasted time when switching modes in an elemental analyzer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-channel detector for an elemental analyzer, comprising a cell, a resistance bridge, a power supply line, a signal line, and a housing; Cell body: The main body of the detector, with three input gas flow paths and three output gas flow paths; Resistance bridge: A bridge composed of 6 resistance sensors, fixed on the gas channel of the cell body; Power supply line: The voltage power supply for the detector; Signal line: Collects the signal change values ​​of the detector; The outer shell is located above the cell body.

[0006] Preferably, the pool body is the detector body with screw holes on the surface for connecting to the outer shell, and has three gas channels inside; the first gas channel has an inlet connected to helium transmission pipeline one and an outlet connected to helium carrier gas output pipeline one; the second gas channel has an inlet connected to helium reference gas input pipeline and an outlet connected to helium reference gas output pipeline; the third gas channel has an inlet connected to helium transmission pipeline two and an outlet connected to helium carrier gas output pipeline two.

[0007] Preferably, the resistance bridge consists of 6 resistance sensors, with each pair of resistors forming a group, and is fixed on the gas channel of the pool body.

[0008] Preferably, the power supply line provides a 5V voltage power supply to the resistor bridge circuit of the detector.

[0009] Preferably, the signal line is used to acquire the voltage signal change value of the detector's resistor bridge.

[0010] Preferably, the housing is fixed to the detector's cell body using screws through through holes and screw holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The three-channel detector of this elemental analyzer has the following advantages: 1. Because it uses three channels, CHNS mode and O mode can be analyzed simultaneously without switching on the hardware. This avoids the cooling and heating process of the elemental analyzer and greatly improves the efficiency of the experiment.

[0012] 2. Because there is no need to switch modes and both modes share the same reference gas, the amount of helium used is reduced by one, resulting in a significant reduction in experimental costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the outer shell of this utility model from a perspective; Figure 3 This is the left view of the present invention.

[0014] In the diagram: 1. Cell body; 2. Resistance bridge; 3. Power supply line; 4. Signal line; 5. Helium carrier gas output line 1; 6. Helium reference gas output line; 7. Helium carrier gas output line 2; 8. Helium transmission line 1; 9. Helium reference gas input line; 10. Helium transmission line 2; 11. Screw hole; 12. Helium carrier gas input line 1; 13. Helium carrier gas input line 2; 14. CHNS column; 15. O column; 16. Outer shell; 17. Through hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 This embodiment provides a technical solution: a three-channel detector for an elemental analyzer, including a cell body 1, a resistance bridge 2, a power supply line 3, a signal line 4, and a housing 16; Cell 1: The first input of Cell 1 is connected to the CHNS column 14 via helium carrier gas input line 12. The outlet of CHNS column 14 is connected to the inlet of helium transfer line 8, and the outlet of helium transfer line 8 is connected to the input inlet of the first input of Cell 1. After passing through the internal gas path of Cell 1, the helium carrier gas is discharged through the helium carrier gas output line 5 connected to the outlet of Cell 1. The second input of Cell 1 is connected to the inlet of the second input of Cell 1 via helium reference gas input line 9. After passing through the internal gas path of Cell 1, the helium reference gas is discharged through the helium reference gas output line 6 connected to the outlet of Cell 1. The third input of Cell 1 is connected to the O column 15 via helium carrier gas input line 13. The outlet of O column 15 is connected to the inlet of helium transfer line 10, and the outlet of helium transfer line 10 is connected to the input inlet of the third input of Cell 1. After passing through the internal gas path of Cell 1, the helium carrier gas is discharged through the helium carrier gas output line 7 connected to the outlet of Cell 1.

[0017] Resistance bridge 2: It consists of 6 resistance sensors connected in parallel. R1 and R2 are located in the first gas channel of pool 1, R3 and R4 are located in the second gas channel of pool 1, and R5 and R6 are located in the third gas channel of pool 1.

[0018] Power supply line 3: Connected to the circuit of resistor 2, providing 5V power to the bridge sensor.

[0019] Signal line 4: Connected to the circuit of resistor bridge 2, it detects the voltage signal change when gas passes through, and then feeds the signal value back to the instrument for calculation and processing.

[0020] Housing 16: The housing 16 is fixed to the detector's cell 1 using screws through the through hole 17 and screw hole 11 to protect the resistor bridge 2 circuit above the detector.

[0021] The working principle of the three-channel detector of the elemental analyzer provided by this utility model is as follows: The outer shell 16 is screwed into the screw hole 11 on the cell body 1 by passing a screw through the through hole 17, which protects the detector cell body 1. In actual testing, the elemental analyzer can run CHNS mode and O mode simultaneously. At this time, the two modes share one helium reference gas. This helium reference gas enters the second channel of the detector cell body 1 through the helium reference gas input pipe 9 and is vented by the helium reference gas output pipe 6 of the cell body 1. The reference gas is the reference value of the detector and is detected by the R3 and R4 sensors of the resistor bridge 2 circuit. The power supply line 3 provides a 5V power supply voltage to the resistor bridge 2 circuit, and the reference signal is fed back to the instrument for calculation by the signal line 4. In CHNS mode, the sample gas is analyzed using helium as the carrier gas. It enters the CHNS column 14 through helium carrier gas inlet line 12 for component separation. The separated components then enter the first channel of detector cell 1 through helium transfer line 8. The gas components are detected by sensors R1 and R2 of the resistor bridge 2 circuit, and the components are fed back to the instrument via signal line 4 for processing. The analyzed component gas is discharged from helium carrier gas outlet line 5. In O mode, the sample gas is analyzed using helium as the carrier gas. It enters the O column 15 through helium carrier gas inlet line 13 for component separation. The separated components enter the third channel of detector cell 1 through helium transfer line 10, and the gas components are detected by sensors R5 and R6 of the resistor bridge 2 circuit. The components are fed back to the instrument via signal line 4 for processing. The analyzed component gas is discharged from helium carrier gas outlet line 7.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A three-channel detector for an elemental analyzer, characterized in that: It includes a pool body (1), a resistance bridge (2), a power supply line (3), a signal line (4), and a housing (16). Pool body (1): The main body of the detector, with three input gas flow paths and three output gas flow paths; Resistance bridge (2): The bridge is composed of 6 resistance sensors and is fixed on the gas channel of the pool body; Power supply line (3): The voltage power supply for the detector; Signal line (4): Collects the signal change value of the detector; Outer shell (16) is located above the pool body (1).

2. The three-channel detector of an elemental analyzer according to claim 1, characterized in that: The pool body (1) is the main body of the detector, with screw holes (11) on the surface for connecting the outer shell (16), and three gas channels inside; the inlet of the first gas channel is connected to the first helium transmission pipeline (8), and the outlet is connected to the first helium carrier gas output pipeline (5); the inlet of the second gas channel is connected to the helium reference gas input pipeline (9), and the outlet is connected to the helium reference gas output pipeline (6); the inlet of the third gas channel is connected to the second helium transmission pipeline (10), and the outlet is connected to the second helium carrier gas output pipeline (7).

3. The three-channel detector of an elemental analyzer according to claim 1, characterized in that: Resistance bridge (2): The bridge is composed of 6 resistance sensors, with 2 resistors forming a group, and is fixed on the gas channel of the pool.

4. The three-channel detector of an elemental analyzer according to claim 1, characterized in that: The power supply line (3) provides a 5V voltage power supply to the resistor bridge (2) circuit of the detector.

5. The three-channel detector of an elemental analyzer according to claim 1, characterized in that: Signal line (4): Acquires the voltage signal change value of the detector resistor bridge (2).

6. The three-channel detector of an elemental analyzer according to claim 1, characterized in that: The outer casing (16): The outer casing (16) is fixed to the detector's cell (1) using screws through the (17) through hole and the screw hole (11).

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