Gas measuring device suitable for temperature and pressure adjustment

Abstract

The utility model relates to the technical field of gas detection, in particular to a gas detection device suitable for temperature and pressure regulation, which comprises a tubular gas chamber, a gas inlet interface and a gas outlet interface, and the two ends of the tubular gas chamber are respectively a light beam incident end and a light beam receiving end. The temperature control structure is arranged outside the air chamber in a sleeving mode, and temperature adjustment is achieved through liquid flowing. The pressure control assembly comprises a sampling pump and an air supply component, and pressure adjustment is achieved. The window assembly is obliquely arranged, and optical interference fringes are eliminated. The device further comprises a light source array, a plane mirror group, a focusing lens, a photoelectric detector and an acquisition processing device, simultaneous measurement of multiple beams of light sources is realized, and the measurement precision and efficiency are improved. The device is suitable for temperature and pressure compensation tests in the spectral absorption technology, and has the advantages of simplicity and convenience in operation, accurate measurement and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field, specifically, relate to a kind of gas measuring device suitable for temperature and pressure regulation. BACKGROUND

[0002] In the field of gas analysis, temperature and pressure have a significant impact on the absorption spectrum of gas. Traditional gas measuring devices usually use a high-low temperature chamber to regulate the temperature of the gas cell. However, this method has several limitations. First, the space limitations of the high-low temperature chamber make it difficult to achieve a long optical path, which is necessary for improving measurement accuracy. Second, while multiple reflection cells can increase the optical path to some extent, the light intensity quickly decays with the increase in the number of reflections, resulting in insufficient signal strength and affecting the accuracy of the measurement. In addition, the design of multiple reflection cells cannot accommodate multiple beams of different wavelengths simultaneously, limiting their application in multispectral measurements. Therefore, the existing gas measuring devices have obvious shortcomings in terms of flexibility in temperature and pressure regulation, light intensity maintenance, and multispectral compatibility. There is an urgent need for a new type of gas measuring device that can overcome these shortcomings to meet the higher requirements of modern gas analysis technology for accuracy and flexibility. SUMMARY

[0003] The purpose of the utility model is to provide a gas measuring device suitable for temperature and pressure regulation to improve the above problems. To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] The present application provides a gas measuring device suitable for temperature and pressure regulation, comprising: a tubular gas cell, a temperature control structure and a pressure control component, the two ends of the tubular gas cell are light beam injection end and light beam receiving end respectively, the chamber of the tubular gas cell is provided with gas inlet and gas outlet, the gas inlet and the gas outlet are in communication with the chamber of the tubular gas cell, the light beam injection end and the light beam receiving end are respectively provided with window component; the outside of the tubular gas cell is provided with the temperature control structure; the pressure control component is in communication with the gas inlet and the gas outlet respectively.

[0005] Optionally, the window component and the inner wall of the tubular gas cell enclose a gas-containing cavity, and the gas inlet and the gas outlet are in communication with the gas-containing cavity respectively.

[0006] Optionally, the window component includes a window sheet pressing plate and a window sheet, the light beam injection end and the light beam receiving end are respectively provided with a flange, the window sheet is arranged in the annular groove of the inner diameter of the flange, the window sheet pressing plate is provided with a through hole, and the window sheet pressing plate is bolted with the flange.

[0007] Optionally, annular sealing pads are arranged between the window sheet and the annular groove and between the window sheet and the window sheet pressing plate, respectively.

[0008] Optionally, the temperature control structure comprises a tubular liquid chamber, a liquid inflow port and a liquid outflow port are arranged on the cavity of the tubular liquid chamber, and the liquid inflow port and the liquid outflow port are in communication with the cavity of the tubular liquid chamber.

[0009] Optionally, the pressure control assembly comprises a sampling pump and a gas supply component, the sampling pump is in communication with the gas outlet interface, and the gas supply component is in communication with the gas inlet interface.

[0010] Optionally, the gas supply component comprises a high-pressure gas cylinder, a pressure reducing valve, a three-way connector and a pressure gauge, the high-pressure gas cylinder is in communication with the three-way connector through the pressure reducing valve, and the pressure gauge is arranged on the three-way connector.

[0011] Optionally, a temperature sensor arranged outside the tubular liquid chamber is arranged, and a monitoring end of the temperature sensor extends into the cavity of the tubular gas chamber through the tubular liquid chamber.

[0012] Optionally, the utility model also comprises a light source array, a plane mirror group, a focusing lens, a photodetector and an acquisition processing device, the light source array and the plane mirror are arranged on one side close to the light beam injection end of the tubular gas chamber, the focusing lens and the photodetector are arranged on one side close to the light beam receiving end of the tubular gas chamber, the focusing lens is arranged between the photodetector and the light beam receiving end, and the acquisition processing device and the photodetector are electrically connected.

[0013] The utility model has the advantages of:

[0014] The utility model discloses a tubular gas chamber, temperature control structure and pressure control component design, realize the accurate regulation to gas temperature and pressure, thereby significantly improve the accuracy and reliability of gas analysis. The straight -through structure design of tubular gas chamber makes multiple different wave band light beams can pass through the gas chamber simultaneously, effectively avoids the light intensity attenuation problem caused by multiple reflections, guarantees the intensity and stability of measurement signal, and this has important significance for improving the sensitivity and resolution of spectral absorption measurement. The temperature control structure adopts constant temperature liquid bath mode, and the uniform control of the temperature in the gas chamber is realized through the flow of liquid, compared with the traditional heating or refrigeration mode, has better temperature stability and adjustment accuracy, can satisfy the gas absorption characteristic test demand under different temperature conditions. The design of pressure control component is flexible, can realize the wide range pressure regulation from negative pressure to positive pressure, adapts to the requirement of various gas analysis scenes, expands the application range of the device. In addition, the device is simple to operate, and is convenient to maintain and upgrade, has good practicality and market competitiveness, provides a kind of efficient, reliable gas measuring device for gas analysis field.

[0015] Other features and advantages of the present application will be further described in the following specification, and some of them become apparent from the specification, or are understood by practicing embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The gas measuring device suitable for temperature and pressure regulation described in the embodiments of the present application.

[0018] Figure 2 The cross-sectional structure of the window assembly along the diameter of the flange described in the embodiments of the present application.

[0019] Marked in the figure: 1, tubular gas chamber; 101, gas inlet; 102, gas outlet; 103, flange; 104, pressure gauge; 2, window assembly; 201, window sheet; 202, window sheet pressing plate; 203, gasket; 3, tubular liquid chamber; 301, liquid inlet; 302, liquid outlet; 4, temperature sensor; 5, pressure reducing valve; 6, high-pressure gas cylinder; 7, sampling pump; 8, light source array; 9, plane mirror; 10, focusing lens; 11, photodetector; 12, acquisition and processing device. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment provides a gas measuring device suitable for temperature and pressure regulation, including: a tubular gas chamber 1, a temperature control structure, and a pressure control component. The tubular gas chamber 1 has a straight-through structure design, with a beam inlet and a beam receiver at its two ends, respectively. An inlet port 101 and an outlet port 102 are provided on the chamber of the tubular gas chamber 1, both communicating with the chamber. A window component 2 is obliquely provided at the beam inlet and the beam receiver. The temperature control structure is fitted around the outside of the tubular gas chamber 1, and the temperature control structure uses a constant-temperature liquid bath method. The pressure control component is connected to both the inlet port 101 and the outlet port 102.

[0024] The utility model discloses a tubular gas chamber 1, temperature control structure and the design of pressure control assembly, realize accurate regulation to gas temperature and pressure to improve the accuracy and reliability of gas analysis significantly. The straight -through structure design of tubular gas chamber 1 makes multiple different waveband light beams can pass through the gas chamber simultaneously, effectively avoids the light intensity attenuation problem caused by multiple reflections, guarantees the intensity and stability of measurement signal, and this has important significance to improve the sensitivity and resolution of spectral absorption measurement. The temperature control structure adopts constant temperature liquid bath mode, and the uniform control of the temperature in the gas chamber is realized through the flow of liquid, compared with the traditional heating or refrigeration mode, has better temperature stability and adjustment accuracy, can satisfy the gas absorption characteristic test demand under different temperature conditions. The design of pressure control assembly is flexible, can realize the wide range pressure regulation from negative pressure to positive pressure, adapts to the requirement of various gas analysis scenes, expands the application range of device. In addition, the device is simple to operate, and easy to maintain and upgrade, has good practicality and market competitiveness, provides a kind of efficient, reliable gas measuring device for gas analysis field.

[0025] Wherein, the window assembly 2 and the inner wall of the tubular gas chamber 1 are enclosed into a gas containing cavity, the gas inlet interface 101 and the gas outlet interface 102 are communicated with the gas containing cavity respectively.

[0026] It can be understood that through the design of the window assembly 2 and the inner wall of the tubular gas chamber 1 enclosing the gas containing cavity, the utility model realizes the efficient flow and accurate control of gas. The communication of the gas inlet interface 101 and the gas outlet interface 102 with the gas containing cavity ensures the full mixing and uniform distribution of gas in the gas chamber, providing a stable and reliable test environment for gas analysis. This structure design not only improves the efficiency of gas exchange, but also enhances the sealing performance of the device, preventing the interference of external gas, thereby further improving the accuracy and repeatability of gas analysis, meeting the demand of improving the accuracy of gas detection.

[0027] As shown in the figure, Figure 2 The window assembly 2 includes a window sheet pressing plate 202 and a window sheet 201, the light beam injection end and the light beam receiving end are respectively provided with a flange 103, the window sheet 201 is arranged in the annular groove of the inner diameter of the flange 103, the window sheet pressing plate 202 is provided with a through hole, and the window sheet pressing plate 202 is bolted with the flange 103.

[0028] It can be understood that by adopting the design of the window assembly 2, the stability and consistency of the light beam when entering and leaving the gas chamber are ensured. The window sheet 201 is installed in the annular groove of the flange 103, and is fixed and sealed by the bolt connection of the window sheet pressing plate 202 and the flange 103. This structure not only improves the optical performance of the device, reduces the scattering and refraction error of the light beam, but also enhances the sealing performance of the device, prevents the entry of external gas and impurities, and thus ensures the accuracy and reliability of gas analysis. Moreover, the inclined flange 103 also helps to eliminate optical interference fringes, further improving the measurement accuracy and stability.

[0029] Among them, annular sealing pads 203 are arranged between the window sheet 201 and the annular groove and between the window sheet 201 and the window sheet pressing plate 202.

[0030] It can be understood that by arranging the annular sealing pads 203 between the window sheet 201 and the annular groove and between the window sheet 201 and the window sheet pressing plate 202, the sealing performance of the window assembly 2 is further enhanced. This design effectively prevents gas leakage from the gap between the window assembly 2 and the flange 103, ensures the stability of the gas environment in the gas chamber, and avoids the interference of external gas and impurities. At the same time, the arrangement of the sealing pads 203 also plays a buffering role, reducing the influence of vibration and impact on the window sheet 201, prolonging the service life of the window sheet 201, and improving the reliability and stability of the device.

[0031] Among them, the temperature control structure is composed of a tubular liquid chamber 3 made of 304 stainless steel, and a liquid inlet 301 and a liquid outlet 302 are arranged on the cavity of the tubular liquid chamber 3, and the liquid inlet 301 and the liquid outlet 302 are in communication with the cavity of the tubular liquid chamber 3.

[0032] It can be understood that the tubular liquid chamber 3 made of 304 stainless steel is used as the temperature control structure, which has excellent corrosion resistance and heat conductivity, ensuring the stability and reliability of the temperature control process. The design of the liquid inlet 301 and the liquid outlet 302 enables the temperature control liquid to flow smoothly in the tubular liquid chamber 3, efficiently transferring heat or cold to the gas chamber, and achieving rapid adjustment and precise control of the temperature in the gas chamber. This design not only improves the response speed and accuracy of temperature control, but also can adapt to different temperature conditions for gas analysis, providing a strong guarantee for obtaining accurate and reliable gas detection results.

[0033] Among them, the pressure control assembly includes a sampling pump 7 and a gas supply component, the sampling pump 7 is in communication with the gas outlet interface 102, and the gas supply component is in communication with the gas inlet interface 101.

[0034] It can be understood that by setting the pressure control assembly composed of the sampling pump 7 and the gas supply component, the utility model realizes the accurate adjustment and control of the pressure in the gas chamber. The sampling pump 7 communicates with the gas outlet interface 102, can extract the gas in the gas chamber, reduce the pressure in the gas chamber, and even realize the negative pressure state; the gas supply component communicates with the gas inlet interface 101, can inject gas into the gas chamber, increase the pressure in the gas chamber, and reach the required pressure level. This design makes the device flexibly adapt to different gas analysis scenes and pressure requirements, has a wide range of pressure adjustment capability from negative pressure to positive pressure, provides diversified experimental conditions for the gas absorption characteristic test, ensures the accuracy and reliability of the gas analysis result, and enhances the practicability and applicability of the device.

[0035] The gas supply component includes a high-pressure gas cylinder 6, a pressure gauge 104 arranged at the gas inlet interface, a three-way connector and a pressure reducing valve 5, the high-pressure gas cylinder 6 communicates with the gas inlet interface 101 of the three-way connector through the pressure reducing valve 5, the pressure reducing valve 5 is arranged on the high-pressure gas cylinder 6 and is used for adjusting the gas outlet pressure of the high-pressure gas cylinder, and the pressure gauge 104 is arranged on the three-way connector and can monitor the gas pressure change in the tubular gas chamber 1 in real time, thereby providing intuitive pressure feedback for the operator.

[0036] It can be understood that by adopting the gas supply component composed of the high-pressure gas cylinder 6, the pressure reducing valve 5, the three-way connector and the pressure gauge 104, the utility model realizes the efficient control and accurate monitoring of the pressure in the gas chamber. The high-pressure gas cylinder 6 provides a stable high-pressure gas source, communicates with the gas inlet interface 101 through the three-way connector, can smoothly introduce high-pressure gas into the gas chamber, and meets the gas analysis demand under different pressure conditions. The design of the three-way connector makes the gas flow more smooth, reduces the complexity of the pipeline, and improves the reliability of the system. Meanwhile, the pressure reducing valve 5 is installed at the gas outlet of the high-pressure gas cylinder 6, can adjust the gas outlet pressure of the high-pressure gas cylinder, provides the required gas pressure for the tubular gas chamber 1, ensures the accuracy and safety of the pressure adjustment, and makes the gas analysis process more controllable and stable.

[0037] The temperature sensor 4 is arranged outside the tubular liquid chamber 3, and a monitoring end of the temperature sensor 4 extends into the cavity of the tubular gas chamber 1 through the tubular liquid chamber 3.

[0038] It can be understood that by arranging the temperature sensor 4 outside the tubular liquid chamber 3 and extending its monitoring end through the tubular liquid chamber 3 into the chamber of the tubular gas chamber 1, the utility model realizes real-time and accurate monitoring of the temperature in the gas chamber. This design enables the temperature sensor 4 to directly sense the actual temperature in the gas chamber, providing accurate temperature data and a reliable basis for temperature control and adjustment. The real-time monitoring function of the temperature sensor 4 can timely feedback the temperature change in the gas chamber, facilitating quick response and adjustment by the operator or control system, ensuring the stability and consistency of the temperature in the gas chamber, and thus improving the accuracy and reliability of gas analysis. In addition, this design simplifies the structure of temperature monitoring, reduces the complexity and cost of the system, and enhances the practicality and applicability of the device.

[0039] The utility model also includes a light source array 8, a plane mirror 9 group, a focusing lens 10, a photoelectric detector 11 and a collection processing device 12, the light source array 8 and the plane mirror 9 are arranged on the side near the light beam injection end of the tubular gas chamber 1, the focusing lens 10 and the photoelectric detector 11 are arranged on the side near the light beam receiving end of the tubular gas chamber 1, the focusing lens 10 is arranged between the photoelectric detector 11 and the light beam receiving end, and the collection processing device 12 is electrically connected with the photoelectric detector 11.

[0040] The light beam generated by each light source in the light source array 8 is reflected by a plane mirror 9 in the plane mirror 9 group, injected into the chamber of the tubular gas chamber 1 through the light beam injection end, and focused by the focusing lens 10 on the photoelectric detector 11 after being emitted out through the light beam receiving end.

[0041] It can be understood that by skillfully integrating the light source array 8, the plane mirror 9 group, the focusing lens 10, the photoelectric detector 11 and the collection processing device 12, the utility model constructs an efficient and accurate gas spectrum analysis system. The light source array 8 is located near the light beam injection end of the tubular gas chamber 1 and can simultaneously emit multiple light beams of different wavebands, which are uniformly reflected into the interior of the gas chamber after being reflected by the plane mirror 9 group, ensuring that the light beams fully contact the gas to be measured and providing sufficient energy for obtaining comprehensive gas absorption spectrum. The focusing lens 10 is placed at the light beam receiving end to converge the light beams emitted from the gas chamber, improve the receiving efficiency of the photoelectric detector 11 and enable it to accurately capture weak light signals. The photoelectric detector 11 is electrically connected with the collection processing device 12, converts the light signals into electrical signals in real time and transmits them to the collection processing device 12, realizing rapid and accurate analysis of the composition and concentration of the gas. This system design greatly improves the sensitivity and accuracy of gas detection and brings an innovative and efficient solution to the field of gas analysis.

[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and altered. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0043] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and altered. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas measurement device suitable for temperature and pressure regulation, characterized in that, The utility model relates to a kind of temperature control device for gas cell, including: Tubular air chamber (1), the light beam injection end and the light beam receiving end are respectively at both ends of the tubular air chamber (1), gas inlet (101) and gas outlet (102) are provided on the chamber of the tubular air chamber (1), the gas inlet (101) and the gas outlet (102) are communicated with the chamber of the tubular air chamber (1), the light beam injection end and the light beam receiving end are respectively provided with window component (2) in an inclined manner; Temperature control structure, the outside of the tubular air chamber (1) is provided with the temperature control structure; Pressure control component, the gas inlet (101) and the gas outlet (102) are communicated with the pressure control component.

2. The gas testing device suitable for temperature and pressure adjustment according to claim 1, characterized in that, The window component (2) and the inner wall of the tubular air chamber (1) are enclosed into gas-containing cavity, the gas inlet (101) and the gas outlet (102) are communicated with the gas-containing cavity respectively.

3. The gas testing device suitable for temperature and pressure adjustment according to claim 2, characterized in that, The window component (2) includes window sheet pressing plate (202) and window sheet (201), the light beam injection end and the light beam receiving end are respectively provided with flange (103) in an inclined manner, the window sheet (201) is arranged in the annular groove of the inner diameter of the flange (103), the window sheet pressing plate (202) is provided with through hole, and the window sheet pressing plate (202) is bolted with the flange (103).

4. The gas testing device suitable for temperature and pressure adjustment according to claim 3, characterized in that, Annular sealing gasket (203) is arranged between the window sheet (201) and the annular groove and between the window sheet (201) and the window sheet pressing plate (202) respectively.

5. The gas testing device suitable for temperature and pressure adjustment according to claim 1, wherein, The temperature control structure includes tubular liquid chamber (3), liquid inlet (301) and liquid outlet (302) are provided on the chamber of the tubular liquid chamber (3), and the liquid inlet (301) and the liquid outlet (302) are communicated with the cavity of the tubular liquid chamber (3).

6. The gas testing device suitable for temperature and pressure adjustment according to claim 1, wherein, The pressure control component includes sampling pump (7) and gas supply component, the sampling pump (7) is communicated with the gas outlet (102), and the gas supply component is communicated with the gas inlet (101).

7. The gas testing device suitable for temperature and pressure regulation according to claim 6, characterized in that, The gas supply component includes high-pressure gas cylinder (6), pressure reducing valve (5), three-way connector and pressure gauge (104), the high-pressure gas cylinder (6) is communicated with the three-way connector gas inlet (101) by pressure reducing valve (5), and the pressure gauge (104) is arranged on the three-way connector.

8. The gas testing apparatus suitable for temperature and pressure regulation according to claim 5, wherein, Temperature sensor (4) is arranged outside the tubular liquid chamber (3), and the monitoring end of the temperature sensor (4) extends into the chamber of the tubular air chamber (1) through the tubular liquid chamber (3).

9. The gas testing device suitable for temperature and pressure regulation according to claim 1, characterized in that, It also comprises a light source array (8), a set of plane mirrors (9), a focusing lens (10), a photoelectric detector (11) and a collection and processing device (12), wherein the light source array (8) and the plane mirrors (9) are arranged on the side close to the light beam entering end of the tubular air chamber (1), the focusing lens (10) and the photoelectric detector (11) are arranged on the side close to the light beam receiving end of the tubular air chamber (1), the focusing lens (10) is arranged between the photoelectric detector (11) and the light beam receiving end, and the collection and processing device (12) is electrically connected with the photoelectric detector (11); The light beam generated by each light source in the light source array (8) is reflected by a plane mirror (9) in the set of plane mirrors (9), enters the chamber of the tubular air chamber (1) through the light beam entering end, and is focused by the focusing lens (10) on the photoelectric detector (11) after being emitted out through the light beam receiving end.

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