Two-phase flow sampling device for particulate matters

Abstract

The utility model provides a particulate matter two-phase flow sampling device. The particulate matter two-phase flow sampling device comprises a sampling probe, a vacuum air pump and a measuring cavity, a measuring chamber and a sample gas flow channel are arranged in the measuring cavity; the sampling probe and the vacuum air pump are detachably mounted on the measuring cavity; the sampling probe is communicated with the measuring chamber, the measuring chamber is communicated with the sample gas flow channel, and the vacuum air pump is communicated with the sample gas flow channel; the sampling probe is used for collecting two-phase flow to be detected, and the two-phase flow enters the measuring chamber, then enters the sample gas flow channel and is discharged from the discharge flow channel by the vacuum air pump. According to the utility model, the modularized design is adopted, and the vacuum air pump is used as a power source, so that stable extraction, analysis and discharge of sample gas are realized, and the influence of moisture is reduced through heating.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring equipment, in particular to a particle two-phase flow sampling device. Background Art

[0002] In the field of environmental monitoring, existing sampling devices have a variety of shortcomings, especially when sampling and analyzing two-phase flows containing particulate matter. These devices often require complex structures to complete the extraction, analysis, and discharge of sample gas, resulting in cumbersome operation and prone to failure. In particular, when dealing with high-humidity and high-viscosity sample gases, traditional devices are more prone to clogging, affecting the accuracy and reliability of measurements. In addition, the installation and adjustment of the sampling probe are not flexible enough, making it difficult to adapt to sampling needs in different environments. After long-term use, due to the short internal flow channel, it cannot be fully heated to remove moisture, and the related components are prone to corrosion or wear, increasing maintenance costs.

[0003] Deficiencies of existing technology:

[0004] 1. The sample gas extraction process is complex: Traditional sampling devices require multiple steps to complete the extraction, analysis and discharge of sample gas, which is cumbersome and prone to errors.

[0005] 2. Easy to clog and deposit: When extracting high-humidity and high-viscosity sample gas, traditional devices are prone to clogging, causing the sample gas to deposit in the measurement chamber, affecting the measurement accuracy.

[0006] 3. The sampling probe is inconvenient to install: The installation and adjustment of the sampling probe are not flexible enough, and the main body and other components need to be disassembled, which increases the difficulty of installation and maintenance.

[0007] Therefore, the existing technology has deficiencies and needs further improvement. Utility Model Content

[0008] In view of the problems existing in the prior art, the utility model provides a particulate matter two-phase flow sampling device.

[0009] To achieve the above purpose, the specific solutions of the present utility model are as follows:

[0010] The utility model provides a particle two-phase flow sampling device, comprising:

[0011] Sampling probe, vacuum air pump, measuring chamber;

[0012] The measuring cavity is provided with a measuring chamber and a sample flow channel;

[0013] The sampling probe and the vacuum air pump are detachably mounted on the measuring cavity;

[0014] The sampling probe is in communication with the measuring chamber, the measuring chamber is in communication with the sample flow channel, and the vacuum air pump is in communication with the sample flow channel;

[0015] The sampling probe is used to collect the two-phase flow to be detected, enters the measuring chamber, then enters the sample flow channel, and is then discharged from the discharge flow channel by the vacuum air pump.

[0016] Furthermore, a first heating rod is provided in the measurement cavity for heating the measurement chamber and the sample flow channel to remove moisture and make the measurement more accurate.

[0017] Furthermore, the measuring cavity is provided with a cover;

[0018] The cover is provided with a first through hole, and the first through hole is used to connect the measuring chamber and the sample flow channel.

[0019] Furthermore, the sampling probe is inserted into the measuring cavity;

[0020] The sampling probe includes a mounting base, an outer sleeve, a sampling tube, and a second heating tube;

[0021] The outer sleeve is sleeved on the outside of the sampling tube and the second heating tube. One end of the outer sleeve, the sampling tube and the second heating tube is mounted on the mounting seat. The other end of the outer sleeve is provided with a first sealing fixing piece. The front end of the sampling tube passes through the first fixing sealing piece.

[0022] A first sealing ring and a second sealing ring are also provided on the outer wall of the mounting seat, which are used to seal between the mounting seat and the measuring cavity;

[0023] A first annular groove is provided between the first sealing ring and the second sealing ring. A second through hole is provided in the first annular groove. The second through hole is communicated with the sampling tube. The first annular groove is communicated with the measuring chamber, so that the sampling probe remains connected to the measuring chamber regardless of its rotation angle.

[0024] Furthermore, a bend is provided at the front end of the sampling tube for adjusting the direction to align with the flow direction.

[0025] Furthermore, a sealing fixing shaft is provided at the tail of the mounting seat for adjusting the angle of the sampling probe.

[0026] Furthermore, the measuring cavity is provided with a sealing plug for introducing an inert gas;

[0027] The sealing plug is communicated with the sample flow channel.

[0028] Furthermore, the sample flow channel adopts a curved design to increase the length of the flow channel.

[0029] Furthermore, a plurality of pressure measuring holes are provided on the side wall of the sample flow channel for monitoring the sampling flow.

[0030] Furthermore, a plurality of screws are provided on the measuring cavity around the mounting seat and the vacuum air pump, and the heads of the screws are used to press the mounting seat and the vacuum air pump for fixing;

[0031] After loosening the screw, the sampling probe and the vacuum air pump can be replaced, or the installation angle can be adjusted by rotating. After tightening, the head of the screw presses the mounting base and the vacuum air pump to fix them.

[0032] The technical solution of the present utility model has the following beneficial effects:

[0033] 1. Stable and reliable sample gas extraction and analysis

[0034] By using a vacuum air pump as the power source, stable extraction, analysis and discharge of sample gas are achieved, which simplifies the operating process and improves the reliability and work efficiency of the system.

[0035] 2. Reduce the impact of water vapor on measurement accuracy

[0036] A first heating rod is provided in the measuring cavity to heat the measuring chamber and the sample flow channel, remove moisture, ensure the accuracy of the measurement, and avoid measurement errors caused by water vapor.

[0037] 3. Convenient installation and maintenance of sampling probe

[0038] The sampling probe can be directly inserted into the measurement chamber without removing the main body and other components, making installation and maintenance easier and faster. The sealing between the sampling probe and the measurement chamber is achieved by the first and second sealing rings, ensuring a tight seal.

[0039] 4. Flexible sampling probe adjustment

[0040] The sampling probe's mounting base is equipped with a sealed fixed shaft at the rear, which allows the sampling probe to be adjusted to suit different directions of the sample flow. The elbow at the front of the sampling tube can also be adjusted to ensure that the sampling probe is always aligned with the sample flow.

[0041] 5. Extended curved flow channel design

[0042] The curved design of the sample flow channel increases its length, facilitating sufficient heating and moisture removal, further improving measurement accuracy. The curved design also reduces sample gas turbulence within the flow channel, reducing the risk of clogging.

[0043] 6. Real-time monitoring of sampling flow

[0044] Several pressure measuring holes are set on the side wall of the sample flow channel, which can monitor the sampling flow in real time, ensure the accuracy of the data, and promptly discover and solve potential problems.

[0045] 7. Backflush cleaning mechanism

[0046] The measuring cavity is provided with a sealing plug for introducing inert gas to keep the flow channel, probe and measuring chamber clean, prevent the deposition of particles and moisture in the sample gas, and extend the service life of the equipment.

[0047] 8. Modular design and flexibility

[0048] Several screws are installed around the mounting base and vacuum air pump on the measurement chamber. Loosening the screws allows for easy replacement or adjustment of the mounting angle, and tightening them securely securely. This modular design makes equipment maintenance and upgrades more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the sampling probe and vacuum air pump of the present invention installed in the measurement chamber;

[0050] Figure 2 It is a cross-sectional view of the measuring chamber and the sampling probe of the utility model;

[0051] Figure 3 It is a cross-sectional view of the vacuum air pump and the sample flow channel of the utility model;

[0052] Figure 4 It is a cross-sectional view of the sampling probe of the present utility model;

[0053] In the picture:

[0054] 1. Sampling probe; 2. Vacuum air pump; 3. Measuring cavity; 4. Measuring chamber; 5. Sample flow channel; 6. Two-phase flow; 7. First heating rod; 8. Cover; 9. First through hole; 10. Mounting seat; 11. Outer sleeve; 12. Sampling tube; 13. Second heating tube; 14. First sealing plate; 15. First sealing ring; 16. Second sealing ring; 17. First annular groove; 18. Second through hole; 19. Elbow; 20. Sealing fixed shaft; 21. Sealing plug; 22. Pressure measuring hole; 23. Screw; 24. Discharge channel. DETAILED DESCRIPTION

[0055] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0056] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0058] In the description of this embodiment, terms such as "upper," "lower," "front," "rear," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0059] Combine Figures 1-4 As shown, the utility model provides a particulate matter two-phase flow sampling device, comprising:

[0060] Sampling probe 1, vacuum air pump 2, measuring chamber 3;

[0061] The measuring cavity 3 is provided with a measuring chamber 4 and a sample flow channel 5;

[0062] The sampling probe 1 and the vacuum air pump 2 are detachably mounted on the measuring cavity 3;

[0063] The sampling probe 1 is in communication with the measuring chamber 4 , the measuring chamber 4 is in communication with the sample flow channel 5 , and the vacuum air pump 2 is in communication with the sample flow channel 5 ;

[0064] The sampling probe 1 is used to collect the two-phase flow 6 to be detected, enters the measuring chamber 4, then enters the sample flow channel 5, and is then discharged from the exhaust flow channel 24 by the vacuum air pump 2.

[0065] The measuring cavity 3 is provided with a first heating rod 7 for heating the measuring chamber 4 and the sample flow channel 5 to remove moisture and make the measurement more accurate.

[0066] The measuring chamber 3 is provided with a cover 8;

[0067] The cover 8 is provided with a first through hole 9 , which is used to connect the measuring chamber 4 and the sample flow channel 5 .

[0068] The sampling probe 1 is inserted into the measuring cavity 3;

[0069] The sampling probe 1 includes a mounting base 10, an outer sleeve 11, a sampling tube 12, and a second heating tube 13;

[0070] The outer sleeve 11 is sleeved on the outside of the sampling tube 12 and the second heating tube 13. One end of the outer sleeve 11, the sampling tube 12, and the second heating tube 13 is mounted on the mounting base 10. The other end of the outer sleeve 11 is provided with a first sealing fixing piece 14. The front end of the sampling tube 12 passes through the first fixing sealing piece.

[0071] The outer wall of the mounting base 10 is further provided with a first sealing ring 15 and a second sealing ring 16, which are used to seal between the mounting base 10 and the measuring cavity 3;

[0072] A first annular groove 17 is provided between the first sealing ring 15 and the second sealing ring 16. A second through hole 18 is provided in the first annular groove 17. The second through hole 18 is communicated with the sampling tube 12. The first annular groove 17 is communicated with the measuring chamber 4, so that the sampling probe 1 remains connected to the measuring chamber 4 regardless of its rotation angle.

[0073] The front end of the sampling tube 12 is also provided with a bend 19 for adjusting the direction to align with the flow direction.

[0074] A sealing fixing shaft 20 is further provided at the rear of the mounting seat 10 for adjusting the angle of the sampling probe 1 .

[0075] The measuring cavity 3 is also provided with a sealing plug 21 for introducing inert gas;

[0076] The sealing plug 21 is communicated with the sample flow channel 5 .

[0077] The sample flow channel 5 adopts a curved design to increase the length of the flow channel.

[0078] A plurality of pressure measuring holes 22 are also provided on the side wall of the sample flow channel 5 for monitoring the sampling flow rate.

[0079] The measuring cavity 3 is provided with a plurality of screws 23 around the mounting seat 10 and the vacuum air pump 2. The heads of the screws 23 are used to press the mounting seat 10 and the vacuum air pump 2 to fix them.

[0080] After loosening the screw 23 , the sampling probe 1 and the vacuum air pump 2 can be replaced, or the installation angle can be adjusted by rotating. After tightening, the head of the screw 23 presses the mounting base 10 and the vacuum air pump 2 to fix them.

[0081] The principle of this utility model is as follows:

[0082] Sample gas collection and transmission

[0083] Sampling probe 1: The sampling probe 1 is inserted into the measurement chamber 3 and secured by a mounting base 10. The sampling probe 1 includes an outer sleeve 11, a sampling tube 12, and a second heating tube 13. The outer sleeve 11 is positioned over the sampling tube 12 and the second heating tube 13. The front end of the sampling probe 1 is equipped with a curved nozzle 19, which can be adjusted to align with the sample flow direction.

[0084] The sample gas enters the measurement chamber 4: The sampling probe 1 collects the two-phase flow 6 to be tested (i.e., the sample gas containing particulate matter). The sample gas enters the measurement chamber 4 through the sampling tube 12. The connection between the sampling probe 1 and the measurement chamber 4 is sealed by the first sealing ring 15 and the second sealing ring 16, ensuring that the sample gas enters the measurement chamber 4 smoothly.

[0085] Sample gas heating and dehumidification

[0086] Heating Rod: A first heating rod 7 is installed within the measurement chamber 3 to heat the measurement chamber 4 and the sample flow path 5. This heating rod removes moisture from the sample gas, ensuring measurement accuracy. A second heating tube 13 within the sampling probe 1 also performs a similar function, further removing moisture from the sample gas.

[0087] Sample flow channel 5 design: Sample flow channel 5 adopts a curved design, which increases the length of the flow channel, helps to fully heat the sample gas in the flow channel, remove moisture, and reduce the impact of water vapor on measurement accuracy.

[0088] Sample gas analysis and discharge

[0089] The measuring chamber 4 is connected to the sample flow channel 5: after the sample gas enters the measuring chamber 4, it continues to pass through the sample flow channel 5. A number of pressure measuring holes 22 are set on the side wall of the sample flow channel 5 for monitoring the sampling flow rate to ensure the accuracy of the data.

[0090] Vacuum air pump 2: The vacuum air pump 2 is installed on the measurement chamber 3 and is connected to the sample flow channel 5. The negative pressure generated by the vacuum air pump 2 draws the sample gas from the measurement chamber 4 into the sample flow channel 5, and then discharges it through the exhaust channel 24. This process ensures stable extraction and discharge of the sample gas.

[0091] Backflush cleaning mechanism

[0092] Sealing plug 21: A sealing plug 21 is provided on the measurement chamber 3 for admitting inert gas. The inert gas enters the sample flow path 5 through the sealing plug 21, cleaning the flow path, sampling probe 1, and measurement chamber 4, preventing the deposition of particulate matter and moisture in the sample gas, thereby extending the service life of the device.

[0093] Installation and Maintenance

[0094] Modular design: The sampling probe 1 and vacuum air pump 2 are fixed to the measurement chamber 3 via screws 23. Loosening screws 23 allows for easy replacement or adjustment of the mounting angle, while tightening secures the probe. This modular design simplifies installation and maintenance.

[0095] Sealing and Fixing: The seal between the mounting base 10 and the measurement chamber 3 is achieved through a first sealing ring 15 and a second sealing ring 16, ensuring the tightness of the sample gas during transmission. A sealing fixing shaft 20 is provided at the rear of the mounting base 10 to adjust the angle of the sampling probe 1 to ensure that the sampling probe 1 is always aligned with the sample gas flow direction.

[0096] Summarize

[0097] This new two-phase flow sampling device for particulate matter achieves stable sample extraction, heating and dehumidification, precise measurement, and clean maintenance through rational structural design and functional configuration. Its operating principle encompasses multiple steps, including sample collection, transmission, heating, analysis, and discharge, ensuring measurement accuracy and system reliability.

[0098] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the practical concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A particle two-phase flow sampling device, characterized in that: include: Sampling probe, vacuum air pump, measuring chamber; The measuring cavity is provided with a measuring chamber and a sample flow channel; The sampling probe and the vacuum air pump are detachably mounted on the measuring cavity; The sampling probe is in communication with the measuring chamber, the measuring chamber is in communication with the sample flow channel, and the vacuum air pump is in communication with the sample flow channel; The sampling probe is used to collect the two-phase flow to be detected, enters the measuring chamber, then enters the sample flow channel, and is then discharged from the discharge flow channel by the vacuum air pump.

2. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: A first heating rod is provided in the measuring cavity for heating the measuring chamber and the sample flow channel to remove moisture and make the measurement more accurate.

3. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: The measuring cavity is provided with a cover; The cover is provided with a first through hole, and the first through hole is used to connect the measuring chamber and the sample flow channel.

4. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: The sampling probe is inserted into the measuring cavity; The sampling probe includes a mounting base, an outer sleeve, a sampling tube, and a second heating tube; The outer sleeve is sleeved on the outside of the sampling tube and the second heating tube. One end of the outer sleeve, the sampling tube and the second heating tube is mounted on the mounting seat. The other end of the outer sleeve is provided with a first sealing fixing piece. The front end of the sampling tube passes through the first fixing sealing piece. A first sealing ring and a second sealing ring are also provided on the outer wall of the mounting seat, which are used to seal between the mounting seat and the measuring cavity; A first annular groove is provided between the first sealing ring and the second sealing ring. A second through hole is provided in the first annular groove. The second through hole is communicated with the sampling tube. The first annular groove is communicated with the measuring chamber, so that the sampling probe remains connected to the measuring chamber regardless of its rotation angle.

5. The particulate matter two-phase flow sampling device according to claim 4, characterized in that: The front end of the sampling tube is also provided with a bend nozzle for adjusting the direction to align with the flow direction.

6. The particulate matter two-phase flow sampling device according to claim 4, characterized in that: The tail of the mounting seat is also provided with a sealing fixed shaft for adjusting the angle of the sampling probe.

7. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: The measuring cavity is also provided with a sealing plug for introducing inert gas; The sealing plug is communicated with the sample flow channel.

8. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: The sample flow channel adopts a curved design to increase the length of the flow channel.

9. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: A plurality of pressure measuring holes are also provided on the side wall of the sample flow channel for monitoring the sampling flow.

10. The particulate matter two-phase flow sampling device according to claim 1, characterized in that: The measuring cavity is provided with a plurality of screws around the mounting seat and the vacuum air pump, and the heads of the screws are used to press the mounting seat and the vacuum air pump for fixing; After loosening the screw, the sampling probe and the vacuum air pump can be replaced, or the installation angle can be adjusted by rotating. After tightening, the head of the screw presses the mounting base and the vacuum air pump to fix them.

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