Sample introduction structure for oxygen-nitrogen-hydrogen analyzer

Abstract

The utility model provides a sample introduction structure for an oxygen-nitrogen-hydrogen analyzer, which comprises a sample introduction main body, a second sample introduction channel is vertically arranged in the sample introduction main body in a penetrating manner, a sample introduction rod is arranged in the sample introduction main body, the sample introduction rod is connected with a first push rod cylinder, and the first push rod cylinder drives the sample introduction rod to enter or exit from the second sample introduction channel; the sample introduction main body is provided with an inert carrier gas conveying pipe communicated with the second sample introduction channel; the sample introduction sliding plate is arranged above the sample introduction main body, a funnel-shaped sample introduction groove is formed in the front part of the sample introduction sliding plate, a transparent window is arranged at the rear part of the sample introduction sliding plate, and a perspective sealing element is arranged at the transparent window; the sample introduction sliding plate is connected with a second push rod cylinder, the second push rod cylinder drives the sample introduction sliding plate to move back and forth and switch between a sample introduction position and an observation position, and when the sample introduction sliding plate is located at the sample introduction position, the sample introduction groove is communicated with the second sample introduction channel; when the sample introduction sliding plate is located at the observation position, the perspective sealing piece is located right above the second sample introduction channel.

Description

Technical Field

[0001] This utility model belongs to the technical field of oxygen, nitrogen, and hydrogen analyzers, and particularly relates to a sample introduction structure for oxygen, nitrogen, and hydrogen analyzers. Background Technology

[0002] Oxygen and nitrogen are the most important elements affecting the quality of alloy products. Their content is typically analyzed using an oxygen-nitrogen-hydrogen analyzer. The process includes: Sample decomposition: Under inert gas protection, the sample is heated in a pulse electrode furnace, causing it to melt and decompose at high temperatures; Gas conversion: Oxygen in the sample reacts with carbon in a graphite crucible to produce carbon monoxide (CO), while nitrogen and hydrogen escape as nitrogen (N2) and hydrogen (H2), respectively; Carbon monoxide (CO) is converted into carbon dioxide (CO2), and the converted mixture is transported by an inert carrier gas; Detection and analysis: The mixed gas first enters an infrared detection system, where the carbon dioxide (CO2) content is detected using infrared absorption, thus determining the oxygen content in the sample; Then, after removing carbon dioxide (CO2) and other components, the mixed gas containing nitrogen (N2) and hydrogen (H2) is sent to a thermal conductivity detector, where the nitrogen and hydrogen content is determined based on the difference in gas thermal conductivity.

[0003] Existing oxygen, nitrogen, and hydrogen analyzers suffer from problems such as insufficient sealing performance, inability to monitor sample heating in real time, and cumbersome installation and operation. Therefore, it is necessary to provide a sample introduction structure for oxygen, nitrogen, and hydrogen analyzers to solve or at least partially solve the above problems. Utility Model Content

[0004] This invention provides a sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer, which optimizes the structure, improves sealing performance, and enables real-time observation of sample heating.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An injection structure for an oxygen, nitrogen, and hydrogen analyzer, comprising:

[0007] The sample injection body has a second sample injection channel vertically extending through it. The sample injection body is equipped with a sample injection rod, which is connected to a first push rod cylinder. The first push rod cylinder drives the sample injection rod to enter or exit the second sample injection channel. The sample injection body is also equipped with an inert carrier gas delivery pipe that communicates with the second sample injection channel.

[0008] The sample injection slide plate is positioned above the sample injection body. A funnel-shaped sample injection groove is located at the front of the slide plate, and a transparent window is located at the rear. A viewing seal is installed at the transparent window. The slide plate is connected to a second push rod cylinder, which moves the slide plate back and forth between the sample injection position and the observation position. When the slide plate is in the sample injection position, the sample injection groove is connected to the second sample injection channel. When the slide plate is in the observation position, the viewing seal is located directly above the second sample injection channel.

[0009] During sample injection, the injection rod enters the second injection channel, and the second pusher cylinder drives the injection slide plate to the injection position. The sample falls into the second injection channel through the injection slot, and the injection rod prevents the sample from passing through the second injection channel. The second pusher cylinder drives the injection slide plate to the observation position. The inert carrier gas delivery pipe introduces inert carrier gas to discharge the air in the heating chamber. The first pusher cylinder drives the injection rod to exit the second injection channel, and the sample passes through the second injection channel, thus achieving sample injection.

[0010] Preferably, the bottom of the injection body is provided with an injection mounting plate, and the injection mounting plate is provided with an injection hole that communicates with the second injection channel.

[0011] Preferably, the front end of the sample injection mounting plate is provided with a connecting groove, a rotating shaft is rotatably provided in the connecting groove, a threaded hole is provided on the rotating shaft corresponding to the connecting groove, a bolt is screwed into the threaded hole, and a fixing groove is provided on the sample injection body corresponding to the connecting groove. When the sample injection body is placed on the sample injection mounting plate, the bolt is moved to be placed in the fixing groove, and the sample injection body is fixed by tightening the bolt.

[0012] Preferably, the bottom surface of the injection body is provided with a second sealing groove, the second sealing groove is located on the outer periphery of the second injection channel, and a second sealing ring is provided in the second sealing groove.

[0013] Preferably, the rear of the sample injection slide plate is provided with a through-hole, and the transparent window is provided at the top of the through-hole; the through-hole is provided with a through-hole, and the through-hole is provided with a through-channel corresponding to the transparent window, and a fluoroscopic lens is sealed in the through-channel.

[0014] Preferably, the outer periphery of the transparent seal is provided with a fourth sealing groove, and a fourth sealing ring is provided in the fourth sealing groove; the bottom edge of the transparent seal is provided with a fifth sealing groove, and a fifth sealing ring is provided in the fifth sealing groove.

[0015] Preferably, the fluoroscopy lens is a magnifying glass, and when the sample injection slide is in the observation position, the combustion of the sample can be observed in real time through the transparent window and the fluoroscopy lens.

[0016] Preferably, an angle-adjustable reflector is provided above the sample introduction structure, through which the transparent window and the viewing lens are obtained to observe the sample combustion in real time.

[0017] Preferably, the bottom sides of the sample injection slide plate are provided with grooves, and the top edge of the sample injection body is provided with a slide rail that matches the grooves. The sample injection slide plate and the sample injection body are slidably connected by the slide rail and the grooves.

[0018] Preferably, the sample inlet slot of the sample inlet slide is provided with a dust cover that can close the sample inlet slot.

[0019] Compared with the prior art, the technical solution of this utility model has beneficial effects.

[0020] For example, in the sample introduction structure of an oxygen, nitrogen, and hydrogen analyzer, the sample introduction structure is reasonably set up and deployed, with a sample introduction slot, a transparent window, and a transparent sealing element set on the sample introduction slide plate; the sample introduction position and the observation position are switched by the second push rod cylinder, ensuring the sealing of the sample introduction channel while realizing real-time observation of the sample combustion process.

[0021] Furthermore, multiple sealing structures are set at the joints of multiple components to improve the sealing effect and enhance the detection accuracy.

[0022] Furthermore, a fluoroscopic channel is set in the fluoroscopic seal, and a fluoroscopic mirror is set in the fluoroscopic channel to further improve the real-time observation effect of the sample combustion process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to an embodiment of this utility model;

[0024] Figure 2 This is a side cross-sectional view of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer in an embodiment of this utility model.

[0025] Figure 3 This is an exploded view of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to an embodiment of this utility model;

[0026] Figure 4 This is a cross-sectional view of the front end of the sample introduction structure for the oxygen, nitrogen, and hydrogen analyzer in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 2-Sample injection structure; 21-Sample injection body; 211-Second sample injection channel; 212-Sample injection rod; 213-First push rod cylinder; 214-Inert carrier gas delivery pipe; 215-Second sealing ring; 216-Fixing groove; 22-Sample injection slide plate; 221-Sample injection groove; 222-Transparent window; 223-Second push rod cylinder; 224-Transparent groove; 23-Sample injection mounting plate; 231-Connecting groove; 232-Rotating shaft; 233-Bolt; 24-Transparent sealing element; 241-Transparent channel; 242-Transparent lens; 243-Fourth sealing ring; 244-Fifth sealing ring; 25-Dust cover. Detailed Implementation

[0029] To make the objectives, features, and beneficial effects of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described below are merely for explaining this utility model and are not intended to limit it. Furthermore, the same or similar reference numerals may be used in the drawings to refer to the same or similar elements in different embodiments, and descriptions of the same or similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc., may be omitted.

[0030] Figure 1 This is a schematic diagram of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to an embodiment of this utility model; Figure 2 This is a side cross-sectional view of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer in an embodiment of this utility model.

[0031] Figure 3 This is an exploded view of the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to an embodiment of this utility model; Figure 4 This is a cross-sectional view of the front end of the sample introduction structure for the oxygen, nitrogen, and hydrogen analyzer in an embodiment of this utility model.

[0032] Reference Figures 1-4 This utility model provides a sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer.

[0033] Specifically, the sample introduction structure 2 for the oxygen, nitrogen, and hydrogen analyzer includes:

[0034] The sample injection body 21 has a second sample injection channel 211 vertically extending through it. The sample injection body 21 has a sample injection rod 212 connected to a first push rod cylinder 213, which drives the sample injection rod 212 into or out of the second sample injection channel 211. The sample injection body 21 is also equipped with an inert carrier gas delivery pipe 214 that connects to the second sample injection channel 211.

[0035] The sample injection slide plate 22 is positioned above the sample injection body 21. A funnel-shaped sample injection groove 221 is provided through the front of the sample injection slide plate 22, and a transparent viewing window 222 is provided at the rear of the sample injection slide plate 222. A transparent sealing element 24 is provided at the transparent viewing window 222. The sample injection slide plate 22 is connected to a second push rod cylinder 223. The second push rod cylinder 223 drives the sample injection slide plate 22 to move back and forth, switching between the sample injection position and the observation position. When the sample injection slide plate 22 is in the sample injection position, the sample injection groove 221 is connected to the second sample injection channel 211. When the sample injection slide plate 22 is in the observation position, the transparent sealing element 24 is located directly above the second sample injection channel 211.

[0036] During testing, the injection rod 212 enters the second injection channel 211, and the second pusher cylinder 223 drives the injection slide plate 22 to move to the injection position. The sample falls into the second injection channel 211 through the injection slot 221. The injection rod 212 prevents the sample from passing through the second injection channel 211. The second pusher cylinder 223 drives the injection slide plate 22 to move to the observation position. The inert carrier gas delivery pipe 214 introduces inert carrier gas to discharge the air in the heating chamber 331. The first pusher cylinder 213 drives the injection rod 212 to exit the second injection channel 211, and the sample passes through the second injection channel 211, thus achieving injection.

[0037] Specifically, the sample introduction structure 2 is positioned above the pulse electrode furnace of the oxygen, nitrogen, and hydrogen analyzer, and the second sample introduction channel 211 is connected to the sample introduction channel of the pulse electrode furnace.

[0038] In some embodiments, a sample injection mounting plate 23 is provided at the bottom of the sample injection body 21, and the sample injection mounting plate 23 is provided with a sample injection hole 23 that communicates with the second sample injection channel 211.

[0039] In some embodiments, the front end of the sample injection mounting plate 23 is provided with a connecting groove 231, and a rotating shaft 232 is rotatably provided in the connecting groove 231. The rotating shaft 232 is provided with a threaded hole corresponding to the connecting groove 231, and a bolt 233 is screwed into the threaded hole. The sample injection body 21 is provided with a fixing groove 216 corresponding to the connecting groove 231. When the sample injection body 21 is placed on the sample injection mounting plate 23, the bolt 233 is moved into the fixing groove 216, and the sample injection body 21 is fixed by tightening the bolt 233. When installing or removing the sample injection body 21, the front end of the sample injection mounting plate 23 does not need to completely remove the bolt 233, and there is no need to align the bolt 233 and the bolt hole, which simplifies the fixing operation.

[0040] Specifically, the rear end of the injection body 21 is fixed to the injection mounting plate 23 by bolts screwed into the injection mounting plate 23.

[0041] In some embodiments, the bottom surface of the sample injection body 21 is provided with a second sealing groove, which is located on the outer periphery of the second sample injection channel 211, and a second sealing ring 215 is provided in the second sealing groove; the top surface of the upper furnace body 31 is provided with a third sealing groove, and a third sealing ring 312 is provided in the third sealing groove, thereby improving the sealing effect at the connection between the sample injection structure 2 and the upper furnace body 31.

[0042] In some embodiments, a through-hole fluoroscopic groove 224 is provided at the rear of the sample injection slide plate 22, and a transparent window 222 is provided at the top of the fluoroscopic groove 224; a fluoroscopic seal 24 is provided in the fluoroscopic groove 224, and a through-hole fluoroscopic channel 241 is provided in the fluoroscopic channel 241 corresponding to the transparent window 222, and a fluoroscopic lens 242 is sealed in the fluoroscopic channel 241; a fourth sealing groove is provided on the outer periphery of the fluoroscopic seal 24, and a fourth sealing ring 243 is provided in the fourth sealing groove; a fifth sealing groove is provided on the bottom edge of the fluoroscopic seal 24, and a fifth sealing ring 244 is provided in the fifth sealing groove; when the sample injection slide plate 22 is in the observation position, the fifth sealing ring 244 is located on the outer periphery of the second sample injection channel 211, thereby improving the sealing effect at the second sample injection channel 211.

[0043] In some embodiments, the iris 242 is a magnifying glass. When the sample slide plate 22 is in the observation position, the combustion of the sample can be observed in real time through the transparent window 222 and the iris 242.

[0044] In some embodiments, an angle-adjustable reflector (not shown) is provided above the sample introduction structure 2, and the sample combustion situation is observed in real time through the transparent window 222 and the perspective lens 242.

[0045] In some embodiments, the bottom sides of the sample injection slide plate 22 are provided with grooves, and the top edge of the sample injection body 21 is provided with a slide rail that matches the grooves. The sample injection slide plate 22 and the sample injection body 21 are slidably connected to the grooves via the slide rails.

[0046] In some embodiments, a dust cover 25 is provided at the sample inlet 221 of the sample inlet slide 22 to close the sample inlet 221.

[0047] In summary, the sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer provided by this utility model has a reasonable arrangement and deployment of the sample introduction structure. The sample introduction slide plate 22 is provided with a sample introduction slot 221, a transparent viewing window 222, and a transparent sealing element 24. The second push rod cylinder 223 realizes the switching between the sample introduction position and the observation position, ensuring the sealing of the sample introduction channel while realizing real-time observation of the sample combustion process.

[0048] Furthermore, multiple sealing structures are set at the connection points of multiple components of the sample injection structure 2 to improve the sealing effect and enhance the detection accuracy.

[0049] Furthermore, a fluoroscopic channel 241 is provided in the fluoroscopic seal 24, and a fluoroscopic lens 242 is provided in the fluoroscopic channel 241 to further improve the real-time observation effect of the sample combustion process.

[0050] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of this utility model disclosure, even when only a single embodiment is described with respect to a particular feature. The feature examples provided in this utility model disclosure are intended to be illustrative and not limiting, unless otherwise stated. In practice, one or more technical features of the dependent claims may be combined with the technical features of the independent claims as needed and where technically feasible, and may be derived from the technical features of the respective independent claims in any suitable manner rather than solely by the specific combinations listed in the claims.

[0051] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer, characterized in that, include: The sample injection body has a second sample injection channel vertically extending through it. The sample injection body is equipped with a sample injection rod, which is connected to a first push rod cylinder. The first push rod cylinder drives the sample injection rod to enter or exit the second sample injection channel. The sample injection body is also equipped with an inert carrier gas delivery pipe that communicates with the second sample injection channel. The sample injection slide plate is positioned above the sample injection body. A funnel-shaped sample injection groove is located at the front of the slide plate, and a transparent window is located at the rear. A viewing seal is installed at the transparent window. The slide plate is connected to a second push rod cylinder, which moves the slide plate back and forth between the sample injection position and the observation position. When the slide plate is in the sample injection position, the sample injection groove is connected to the second sample injection channel. When the slide plate is in the observation position, the viewing seal is located directly above the second sample injection channel. During sample injection, the injection rod enters the second injection channel, and the second pusher cylinder drives the injection slide plate to the injection position. The sample falls into the second injection channel through the injection slot, and the injection rod prevents the sample from passing through the second injection channel. The second pusher cylinder drives the injection slide plate to the observation position. The inert carrier gas delivery pipe introduces inert carrier gas to discharge the air in the heating chamber. The first pusher cylinder drives the injection rod to exit the second injection channel, and the sample passes through the second injection channel, thus achieving sample injection.

2. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 1, characterized in that, The bottom of the injection body is provided with an injection mounting plate, and the injection mounting plate is provided with an injection hole that connects to the second injection channel.

3. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 2, characterized in that, The front end of the sample injection mounting plate is provided with a connecting groove, and a rotating shaft is rotatably provided in the connecting groove. The rotating shaft is provided with a threaded hole corresponding to the connecting groove, and a bolt is screwed into the threaded hole. The sample injection body is provided with a fixing groove corresponding to the connecting groove. When the sample injection body is placed on the sample injection mounting plate, the bolt is moved to be placed in the fixing groove, and the sample injection body is fixed by tightening the bolt.

4. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 1, characterized in that, The bottom surface of the sample injection body is provided with a second sealing groove, which is located on the outer periphery of the second sample injection channel, and a second sealing ring is provided in the second sealing groove.

5. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 1, characterized in that, The rear of the sample injection slide plate is provided with a through-hole, and the transparent window is provided at the top of the through-hole; the through-hole is provided with a through-hole, and the through-hole is provided with a through-hole, corresponding to the transparent window, and a fluoroscopic lens is sealed in the through-hole.

6. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 5, characterized in that, The outer periphery of the transparent seal is provided with a fourth sealing groove, and a fourth sealing ring is provided in the fourth sealing groove; the bottom edge of the transparent seal is provided with a fifth sealing groove, and a fifth sealing ring is provided in the fifth sealing groove.

7. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 5, characterized in that, The fluoroscopy lens is a magnifying glass. When the sample injection slide is in the observation position, the combustion of the sample can be observed in real time through the transparent window and the fluoroscopy lens.

8. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 5, characterized in that, An adjustable reflector is provided above the sample introduction structure, through which the transparent window and the viewing lens are obtained to observe the sample combustion in real time.

9. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 1, characterized in that, The bottom sides of the sample injection slide plate are provided with grooves, and the top edge of the sample injection body is provided with a slide rail that matches the grooves. The sample injection slide plate and the sample injection body are slidably connected by the slide rail and the groove.

10. The sample introduction structure for an oxygen, nitrogen, and hydrogen analyzer according to claim 1, characterized in that, The sample inlet slide is provided with a dust cover that can seal the sample inlet.

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