A high temperature gas detection pre-processing apparatus

Abstract

The utility model discloses a high temperature gas detection pretreatment equipment belongs to gas detection technical field. The high temperature gas detection pretreatment equipment includes three -way valve, high pressure valve is connected with three -way valve, pneumatic valve, pneumatic valve is connected with high pressure valve, emptying valve is connected with high pressure valve, and is connected with pneumatic valve parallelly, gas analyzer, gas analyzer is connected with pneumatic valve, heating module. Heating module is used for heating the inner chamber of the box, guarantees the environment temperature where gas is in the conveying process is always above 120 DEG C, thereby guarantees the component in volatile gas and will not appear change, makes the relevant data that gas analyzer detects more accurate. Through the parallel mode of pneumatic valve and emptying valve, can prevent the problem that high pressure valve appears to hold up pump. Still can guarantee the gas flow -through of entering gas analyzer is consistent, avoids appearing the problem that the detection data is invalid because of the uneven gas flow.

Description

Technical Field

[0001] This utility model relates to a high-temperature gas detection pretreatment device, belonging to the field of gas detection technology. Background Technology

[0002] In some manufacturing industries, especially those requiring combustion and high-temperature gas emissions, real-time online monitoring of numerous parameters such as flue gas temperature and the concentration of different components is necessary. However, detecting these volatile gases presents several problems: First, due to their volatility, changes in gas temperature can alter the composition of the gas, leading to inaccurate data from gas analyzers. Second, gas analyzers require regular calibration to ensure accuracy, but most existing testing equipment lacks calibration capabilities or fails to ensure consistency between the standard gas flow rate and the sample gas flow rate, which can negatively impact data accuracy over time. Furthermore, the direct series connection of high-pressure valves and gas pressure valves in existing testing equipment can cause pump blockage in the high-pressure valve, reducing its lifespan. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a high-temperature gas detection pretreatment device. This device not only ensures that the extracted sample gas remains at a high temperature, preventing changes in the gas composition and ensuring that the gas composition data detected by the gas analyzer is not distorted, but also performs timed calibration of the gas analyzer, ensuring the accuracy of the gas analyzer data.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model provides a high-temperature gas detection pretreatment device, comprising:

[0006] Three-way valve;

[0007] A high-pressure valve, which is connected to the three-way valve;

[0008] A pneumatic valve, which is connected to the high-pressure valve;

[0009] An air vent valve, which is connected to the high-pressure valve and in parallel with the pneumatic valve;

[0010] A gas analyzer, wherein the gas analyzer is connected to the pneumatic valve;

[0011] Heating module.

[0012] In one embodiment of this invention, a filter is included, which is installed between the three-way valve and the pneumatic valve. The filter can automatically remove large particulate matter from the gas.

[0013] In one embodiment of this utility model, a first inlet and a second inlet are included, and the first inlet and the second inlet are connected to the three-way valve.

[0014] In one embodiment of this utility model, an outlet is included, which is connected to the vent valve and located on the side of the vent valve away from the high-pressure valve.

[0015] In one embodiment of this utility model, a housing is included, and the heating module is installed inside the housing.

[0016] In one embodiment of this utility model, an insulation layer is included, which is laid inside the box to insulate the box.

[0017] In one embodiment of this invention, the heating module is a heating element installed between the inner wall of the housing and the insulation layer. This makes the heating module heat the housing more evenly.

[0018] In one embodiment of this utility model, the inner wall of the box is provided with multiple holes.

[0019] In one embodiment of this invention, a temperature sensor is installed inside the chamber. This sensor detects the temperature inside the chamber and uses the detected temperature data to control the heating module's on / off state, ensuring that the ambient temperature of the gas during transport remains above 120°C and that the composition of the volatile gas remains unchanged.

[0020] In one embodiment of this invention, the insulation layer is made of rock wool board. It not only provides insulation but also absorbs water.

[0021] Beneficial effects

[0022] This utility model provides a high-temperature gas detection pretreatment device comprising a three-way valve, a high-pressure valve, a pneumatic valve, a vent valve, a gas analyzer, and a heating module. The heating module heats the inner cavity of the chamber, ensuring that the ambient temperature of the gas during transport remains above 120°C, thus preventing changes in the composition of the volatile gas and making the data detected by the gas analyzer more accurate. The pneumatic valve and vent valve are connected in parallel, meaning the gas discharged from the high-pressure valve is divided into two paths: one enters the pneumatic valve, and the other enters the vent valve for venting. The vent valve controls the gas flow rate entering the pneumatic valve, preventing pump blockage in the high-pressure valve and potential pump damage. Furthermore, the vent valve's venting action prevents excessive gas flow into the gas analyzer, ensuring a consistent gas flow and avoiding invalid detection data due to uneven gas flow. Attached Figure Description

[0023] Figure 1 A schematic diagram of the high-temperature gas detection and pretreatment equipment provided by this utility model.

[0024] Figure 2 This is a schematic diagram of the inner wall of the box provided by this utility model.

[0025] In the picture:

[0026] 1. Three-way valve; 2. Filter; 3. Pneumatic valve; 4. High-pressure valve; 5. Vent valve; 6. Heating module; 7. Gas analyzer; 8. Housing; 9. Insulation layer; 10. First inlet; 11. Second inlet; 12. Outlet. Detailed Implementation

[0027] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figure 1As shown, this application provides a high-temperature gas monitoring pretreatment device. This device not only ensures that the extracted sample gas remains at a high temperature, preventing changes in the gas composition and ensuring that the gas composition data detected by the gas analyzer is not distorted, but also provides a high-temperature gas monitoring pretreatment device. The device includes a three-way valve 1, with three passages connected to a first inlet 10, a second inlet 11, and a filter 2. The first inlet 10 receives the sample gas to be tested, while the second inlet 11 receives standard gas for calibrating the gas analyzer. The three-way valve 1 allows for free switching between the sample gas and the standard gas. The filter 2 automatically filters out large particles in the gas. The end of the filter 2 facing away from the three-way valve 1 is connected to a high-pressure valve 4, which is used to extract either the sample gas or the standard gas. The high-pressure valve 4, located away from the filter 2, is connected to a pneumatic valve 3 and a vent valve 5. These two valves are connected in parallel. The pneumatic valve 3, located away from the high-pressure valve 4, is connected to a gas analyzer 7 for online monitoring of gas composition. The vent valve 5, located away from the high-pressure valve 4, is connected to outlet 12 to discharge excess gas. The high-pressure valve 4, in conjunction with the pneumatic valve 3, draws the sample gas into the gas analyzer 7. Because the pneumatic valve 3 and vent valve 5 are connected in parallel, the gas discharged from the high-pressure valve 4 is divided into two paths: one enters the pneumatic valve 3, and the other enters the vent valve 5 for venting. The vent valve 5 controls the gas flow rate entering the pneumatic valve 3. This prevents the high-pressure valve 4 from stalling and damaging the pump. Furthermore, the vent valve 5 prevents excessive gas flow into the gas analyzer 7, ensuring a consistent flow and avoiding invalid data due to uneven gas flow.

[0031] In some embodiments, the high-temperature gas detection pretreatment equipment further includes a housing 8, with a three-way valve 1, a filter 2, a pneumatic valve 3, a high-pressure valve 4, a vent valve 5, and a gas analyzer 7 all installed inside the housing 8. An insulation layer 9 is laid around the housing 8 to insulate it. A heating module 6 is also installed inside the housing 8. The heating module 6 can be an electric heating plate installed on the inner wall of the housing 8, or an electric heating element installed between the inner wall of the housing 8 and the insulation layer 9, allowing for more uniform heating of the housing 8. The heating module 6 heats the interior of the housing 8, ensuring that the ambient temperature of the gas during transport remains above 120°C, thus preventing changes in the composition of the volatile gas and making the data detected by the gas analyzer 7 more accurate.

[0032] Furthermore, in some embodiments, a temperature sensor can be installed inside the housing 8 to detect the temperature inside the housing. The detected temperature data is used to control the opening and closing of the heating module 6, ensuring that the ambient temperature of the gas during transportation remains above 120°C, thus preventing changes in the composition of the volatile gas. Multiple small holes can also be provided on the inner wall of the housing 8 to accelerate heating through convection. Simultaneously, the insulation layer 9 is made of absorbent material to absorb condensation from the temperature drop inside the housing 8, preventing corrosion at pipe-to-pipe connections and valve-to-pipe connections, which would facilitate future replacement and maintenance.

[0033] Optionally, the insulation layer 9 can be made of rock wool board or glass wool. Preferably, the insulation layer 9 is made of rock wool board, which not only provides insulation but also absorbs water.

[0034] The working principle of this invention is as follows: When sample gas needs to be tested, the heating module 6 is first turned on to raise the temperature inside the chamber 8 to above 120°C, ensuring that the composition of the gas remains unchanged. Then, the valve on the side of the three-way valve 1 facing the sample gas is opened, allowing the sample gas to enter the three-way valve 1 from the first inlet 10. After passing through the three-way valve 1, the gas flows sequentially into the filter 2 and the high-pressure valve 4, then through the high-pressure valve 4 into the vent valve 5 and the pneumatic valve 3, and finally into the gas analyzer 7 via the pneumatic valve 3. The gas analyzer 7 tests the sample gas. The vent valve 5 adjusts the flow rate of the sample gas entering the pneumatic valve 3, discharging excess sample gas to maintain a consistent flow rate in the gas analyzer 7 via the pneumatic valve 3, thus ensuring the validity of the test data. Simultaneously, discharging excess sample gas also prevents the high-pressure pump 4 from stalling.

[0035] When the gas analyzer 7 needs calibration, switch the three-way valve 1 to open the direction connecting the three-way valve 1 to the second inlet 11, and close the sample gas side. After the standard gas is discharged from the three-way valve 1, it passes through the filter 2, the high-pressure valve 4, and the pneumatic valve 3 in sequence, and finally enters the gas analyzer 7. The vent valve 5 discharges the excess standard gas, so that the flow rate of the standard gas is consistent with the flow rate of the sample gas. Then, the gas analyzer 7 is calibrated. By using standard gas for comparison measurement, the instrument parameters are adjusted to ensure the validity of the calibration data.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0038] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-temperature gas detection pretreatment device, characterized in that, include: Three-way valve (1); High pressure valve (4), which is connected to the three-way valve (1); Pneumatic valve (3), which is connected to the high-pressure valve (4); An air vent valve (5) is connected to the high-pressure valve (4) and is connected in parallel with the pneumatic valve (3); Gas analyzer (7), the gas analyzer (7) is connected to the pneumatic valve (3); Heating module (6).

2. The high-temperature gas detection pretreatment equipment according to claim 1, characterized in that, Includes a filter (2), which is installed between the three-way valve (1) and the pneumatic valve (3).

3. The high-temperature gas detection pretreatment equipment according to claim 2, characterized in that, It includes a first inlet (10) and a second inlet (11), which are connected to the three-way valve (1).

4. The high-temperature gas detection pretreatment equipment according to claim 1, characterized in that, It includes an outlet (12), which is connected to the vent valve (5) and is located on the side of the vent valve (5) away from the high-pressure valve (4).

5. The high-temperature gas detection pretreatment equipment according to claim 1, characterized in that, Includes a housing (8), and the heating module (6) is installed inside the housing (8).

6. The high-temperature gas detection pretreatment equipment according to claim 5, characterized in that, It includes an insulation layer (9), which is laid inside the box body (8).

7. The high-temperature gas detection pretreatment equipment according to claim 6, characterized in that, The heating module (6) is a heating element, which is installed between the inner wall of the box (8) and the insulation layer (9).

8. The high-temperature gas detection pretreatment equipment according to claim 7, characterized in that, The inner wall of the box (8) is provided with multiple holes.

9. A high-temperature gas detection pretreatment device according to claim 8, characterized in that, A temperature sensor is installed inside the housing (8).

10. A high-temperature gas detection pretreatment device according to claim 6, characterized in that, The insulation layer (9) is made of rock wool board.

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