Low-resistance temperature storage type superfine particulate matter sampling channel device capable of dynamically heating

Abstract

The invention discloses a low-resistance dynamic heating temperature storage type superfine particulate matter sampling channel device, and belongs to the technical field of atmospheric environment particulate pollutant detection and governance. The low-resistance dynamic heating temperature storage type superfine particulate matter sampling channel device comprises an air inlet sampling probe, the air inlet sampling probe is communicated with one end of an air inlet positioning mechanism, and the air inlet positioning mechanism is communicated with a low-resistance pipeline through a flexible high-temperature-resistant pipe; a heating mechanism is arranged outside the low-resistance pipeline, a temperature sensor is arranged at the end, away from the air inlet positioning mechanism, in the low-resistance pipeline, a temperature control module is arranged at the end, close to the temperature sensor, of the heating mechanism, and the end, away from the heating mechanism, of the temperature control module communicates with an air outlet positioning mechanism. The sampling heating temperature control module is used for heating the sampling channel according to the actual temperature data of the particulate matters tested by the temperature sensor of the sampling channel, and carrying out variable-temperature heating according to the real-time transient temperature of the particulate matters, so that the defect of high energy consumption caused by the fact that the constant heating temperature of the traditional sampling pipe is kept at 200 DEG C can be directly overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of atmospheric environmental particle pollutant detection and treatment, and in particular relates to a low-resistance dynamically heated temperature-storing type ultrafine particle sampling channel device. Background Art

[0002] The high-temperature resistant heating sampling tube currently in use is about 1 to 2 meters long. The heating temperature is kept constant at 200°C under the power supply of a separate external power supply. There are disadvantages such as uneven temperature distribution in the sampling channel, high energy consumption, and inability to accurately adapt to the ambient temperature. Maintaining a 1-2 meter long heated sampling tube at 200°C requires an accurate temperature control system. Due to the long length of the pipeline and the uneven temperature distribution, some parts overheat or fail to reach the required temperature, which affects the accuracy of the sampling. Maintaining 200°C for a long time consumes a lot of electricity and increases operating costs. Under different environmental conditions (different test problems, humidity, etc.), the sampling tube temperature is always 200°C. The temperature cannot be changed according to the detection temperature of the particles, resulting in agglomeration of particles under different temperature difference conditions, resulting in inaccurate particle detection data. Summary of the invention

[0003] The purpose of the present invention is to provide a low-resistance dynamically heated temperature-storage type ultrafine particle sampling channel device to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a low-resistance dynamically heated temperature-storage type ultrafine particle sampling channel device, including an air intake sampling probe, the air intake sampling probe is connected to one end of an air intake positioning mechanism, the air intake positioning mechanism is connected to a low-resistance pipeline through a flexible high-temperature resistant pipe, a heating mechanism is provided outside the low-resistance pipeline, a temperature sensor is provided at one end of the low-resistance pipeline away from the air intake positioning mechanism, a temperature control module is provided at one end of the heating mechanism close to the temperature sensor, the temperature control module is electrically connected to the heating mechanism, and the end of the temperature control module away from the heating mechanism is connected to an air outlet positioning mechanism.

[0005] Preferably, the heating mechanism comprises a heating pipe arranged outside the low-resistance pipe, a high-pressure braided rubber pipe is provided outside the heating pipe, a temperature-storing outer rubber layer is provided outside the high-pressure braided rubber pipe, and the temperature control module is electrically connected to the heating pipe.

[0006] Preferably, the air intake positioning mechanism comprises an air intake connecting pipe connected to the air intake sampling probe, an end of the air intake connecting pipe away from the air intake sampling probe is connected to an air intake positioning nut, and a positioning clip is provided outside the air intake positioning nut.

[0007] Preferably, a transition connector is provided between the air intake positioning nut and the flexible high temperature resistant pipe.

[0008] Preferably, the air outlet positioning mechanism comprises an air outlet positioning nut connected to the temperature control module, and one end of the air outlet positioning nut away from the temperature control module is connected to an air outlet connecting pipe.

[0009] The present invention discloses the following technical effects: by detecting the temperature in real time through a temperature sensor, and by performing dynamic heating and temperature storage functions through a temperature control module, the device can work stably under different temperature conditions, thereby realizing accurate measurement of ultrafine particles. Since the device can adapt to different temperature conditions, the present application can be used under a wider range of environmental conditions, and can maintain good performance in both extremely high and low temperature environments, thereby enhancing the environmental adaptability of ultrafine particle detection. By reducing the length of the sampling channel and adopting a micro-channel structure to reduce flow resistance and increase heat exchange area, the agglomeration of particles during transmission is reduced, thereby improving the reliability of the data. By arranging a heating mechanism outside the low-resistance pipeline, the present application has extremely low energy consumption when not in operation, which helps to reduce long-term operating costs and meet the requirements of energy conservation and emission reduction. In order to ensure that the fluid can flow evenly and fully exchange heat, multiple high-pressure air backblowing is performed inside the low-resistance pipeline to reduce drag. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0011] Figure 1 It is a schematic structural diagram of a low-resistance dynamic heating and temperature-storage type ultrafine particle sampling channel device of the present invention;

[0012] Figure 2 It is a cross-sectional schematic diagram of the heating mechanism of the present invention.

[0013] In the figure: 1. Inlet sampling probe; 2. Inlet connecting pipe; 3. Positioning clamp; 4. Inlet positioning nut; 5. Transition connector; 6. Flexible high-temperature resistant pipe; 7. Outer rubber layer; 8. High-pressure braided rubber pipe; 9. Heating pipe; 10. Low-resistance pipe; 11. Temperature sensor; 12. Temperature control module; 13. Outlet positioning nut; 14. Outlet connecting pipe. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Reference Figure 1-Figure 2 A low-resistance dynamically heated temperature-storage type ultrafine particle sampling channel device comprises an air intake sampling probe 1, the air intake sampling probe 1 is connected to one end of an air intake positioning mechanism, the air intake positioning mechanism is connected to a low-resistance pipeline 10 through a flexible high-temperature resistant tube 6, a heating mechanism is arranged outside the low-resistance pipeline 10, a temperature sensor 11 is arranged at one end of the low-resistance pipeline 10 away from the air intake positioning mechanism, a temperature control module 12 is arranged at one end of the heating mechanism close to the temperature sensor 11, the temperature control module 12 is electrically connected to the heating mechanism, and the end of the temperature control module 12 away from the heating mechanism is connected to the air outlet positioning mechanism.

[0017] The temperature is detected in real time by the temperature sensor 11, and the dynamic heating and temperature storage functions are performed by the temperature control module 12. It can work stably under different temperature conditions, thereby realizing accurate measurement of ultrafine particles. Because it can adapt to different temperature conditions, the present application can be used under a wider range of environmental conditions, whether it is an extreme high temperature or low temperature environment, it can maintain good performance, and enhance the environmental adaptability of ultrafine particle detection. By reducing the length of the sampling channel and adopting a micro-channel structure to reduce flow resistance and increase heat exchange area, the agglomeration of particles during transmission is reduced, thereby improving the reliability of data. By arranging a heating mechanism outside the low-resistance pipeline 10, the present application has extremely low energy consumption when not in operation, which helps to reduce long-term operating costs and meet the requirements of energy conservation and emission reduction. In order to ensure that the fluid can flow evenly and fully exchange heat, multiple high-pressure air backwashes are performed inside the low-resistance pipeline 10 to reduce resistance.

[0018] In a further optimized solution, the heating mechanism includes a heating pipe 9 arranged outside the low-resistance pipe 10, a high-pressure braided rubber pipe 8 is arranged outside the heating pipe 9, a heat storage outer rubber layer 7 is arranged outside the high-pressure braided rubber pipe 8, and a temperature control module 12 is electrically connected to the heating pipe 9. The sampling channel is wrapped with a high-pressure braided rubber hose (a steel wire reinforcement layer with multiple layers of steel wire wound hoses alternately wound) to form an insulation layer outside the channel, which can reduce heat loss and keep the temperature in the sampling channel stable.

[0019] Further optimizing the scheme, the air intake positioning mechanism includes an air intake connecting pipe 2 connected to the air intake sampling probe 1, and an air intake positioning nut 4 is connected to one end of the air intake connecting pipe 2 away from the air intake sampling probe 1, and a positioning clip 3 is provided outside the air intake positioning nut 4. In this way, the air intake connecting pipe 2 is positioned.

[0020] According to a further optimized solution, a transition connector 5 is provided between the air intake positioning nut 4 and the flexible high temperature resistant tube 6 .

[0021] In a further optimized solution, the air outlet positioning mechanism includes an air outlet positioning nut 13 connected to the temperature control module 12, and one end of the air outlet positioning nut 13 away from the temperature control module 12 is connected to an air outlet connecting pipe 14. The air outlet positioning nut 13 is used to position the air outlet connecting pipe 14.

[0022] The length of the low-resistance dynamic heating temperature storage type ultrafine particle sampling channel device of the present application is 0.5 meters. The shortened length of the sampling channel can effectively solve the problem of uneven temperature distribution in the sampling channel. The sampling heating temperature control module 12 heats the sampling channel according to the actual temperature data of the particles tested by the temperature sensor 11 of the sampling channel, and performs variable temperature heating according to the real-time transient temperature of the particles, which can directly solve the high energy consumption caused by the constant heating temperature of the traditional sampling tube maintained at 200°C. The sampling channel is heated according to the actual temperature of the particles, which effectively avoids the particle agglomeration effect caused by the temperature difference and improves the adaptability and accuracy of particle detection.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A low-resistance dynamic heating and temperature storage type ultrafine particle sampling channel device, characterized in that: The invention comprises an air intake sampling probe (1), wherein the air intake sampling probe (1) is connected to one end of an air intake positioning mechanism, the air intake positioning mechanism is connected to a low-resistance pipeline (10) through a flexible high-temperature resistant pipe (6), a heating mechanism is provided outside the low-resistance pipeline (10), a temperature sensor (11) is provided at one end of the low-resistance pipeline (10) away from the air intake positioning mechanism, a temperature control module (12) is provided at one end of the heating mechanism close to the temperature sensor (11), the temperature control module (12) is electrically connected to the heating mechanism, and the end of the temperature control module (12) away from the heating mechanism is connected to an air outlet positioning mechanism.

2. The low-resistance dynamic heating and temperature storage type ultrafine particle sampling channel device according to claim 1 is characterized in that: The heating mechanism comprises a heating pipe (9) arranged outside the low-resistance pipe (10), a high-pressure braided rubber pipe (8) is arranged outside the heating pipe (9), a temperature-storing outer rubber layer (7) is arranged outside the high-pressure braided rubber pipe (8), and the temperature control module (12) is electrically connected to the heating pipe (9).

3. The low-resistance dynamic heating and temperature storage type ultrafine particle sampling channel device according to claim 1 is characterized in that: The air intake positioning mechanism comprises an air intake connecting pipe (2) connected to the air intake sampling probe (1), an end of the air intake connecting pipe (2) away from the air intake sampling probe (1) is connected to an air intake positioning nut (4), and a positioning clamp (3) is provided on the outside of the air intake positioning nut (4).

4. The low-resistance dynamic heating and temperature storage type ultrafine particle sampling channel device according to claim 3 is characterized in that: A transition connector (5) is provided between the air intake positioning nut (4) and the flexible high temperature resistant pipe (6).

5. The low-resistance dynamic heating and temperature storage type ultrafine particle sampling channel device according to claim 1 is characterized in that: The air outlet positioning mechanism comprises an air outlet positioning nut (13) connected to the temperature control module (12); one end of the air outlet positioning nut (13) away from the temperature control module (12) is connected to an air outlet connecting pipe (14).

Images