Low-power-consumption pump-free anti-blocking multi-channel gas sampling and monitoring module for heat supply well chamber

Abstract

The invention provides a heat supply well chamber low-power-consumption pump-free anti-blocking multi-channel gas sampling monitoring module which comprises a main gas circuit, the main gas circuit comprises a gas inlet pipeline and a gas outlet pipeline, a gravity condensation separator is arranged between the gas inlet pipeline and the gas outlet pipeline, and a plurality of gas sample monitoring pieces are connected to the gas outlet pipeline in parallel; a heating element is mounted at an air inlet of the air inlet pipeline; according to the device, through structural innovation and function integration, the reliability, the energy-saving performance and the multi-task monitoring capability are outstanding, the device is particularly suitable for long-term gas monitoring requirements in severe environments such as a heat supply well chamber, and an efficient and low-cost solution is provided for potential safety hazard early warning.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas sampling and monitoring, and specifically relates to a low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module suitable for a heating well chamber. Background Art

[0002] In urban centralized heating systems, heating wells, a key node in the underground pipe network, exhibit significant high humidity within the well. Because the heating pipe temperature typically ranges from 60-95°C, creating a significant temperature difference from the ambient temperature of 10-25°C inside the well, condensation continuously forms on the pipe surfaces and well walls, causing the relative humidity inside the well to remain in the 85%-95% range year-round. When applied to such scenarios, traditional pump-priming air systems face three technical bottlenecks: First, clogging due to condensation is a particularly prominent problem. Existing gas lines often use PVC or rubber hoses with a diameter of 3-5mm. When humid gas is forcibly drawn through the pump, the pump drives the airflow at speeds of 1-2m / s. When the high-speed airflow contacts the cool pipe wall, the water vapor quickly condenses into liquid water. Field measurements show that after 48 hours of continuous operation in an environment with 90% humidity, a water film 0.5-1mm thick forms inside a 5mm diameter gas line. Within 15 days, more than 50% of the pipe diameter will become clogged, and within 30 days, it will become completely blocked, resulting in interrupted sampling. A heating company's 2024 operations and maintenance report shows that among its 862 heating wells, traditional pump-suction monitoring equipment experiences an average of 2.3 blockages per unit per year, with a single repair cost of approximately 800-1200 yuan.

[0003] Second, the contradiction between power consumption and battery life is difficult to reconcile. Traditional micro air pumps (such as diaphragm pumps) typically operate at 0.5-2W. If powered by lithium batteries, a 10Ah battery can only maintain operation for 7-20 days, which is insufficient for continuous monitoring during the heating season (approximately 120 days). If solar power is used, heating wells are often located 2-5 meters underground, and the wellheads are often obscured by covers and debris, resulting in extremely poor lighting conditions. The average daily effective charge is less than 0.5Wh, making it difficult to sustain continuous pump operation. A heating company in a northern city once attempted to install a solar power system in its wells, but 67% of the equipment shut down due to battery exhaustion after three consecutive days of rain.

[0004] Third, the flow resistance superposition effect is significant when monitoring multiple gases. Traditional gas path systems usually use a series sensor arrangement when monitoring multiple gases such as methane, hydrogen sulfide, and oxygen. The gas needs to pass through multiple sensor chambers in sequence. When the airflow passes through each sensor, due to the local resistance generated by the internal structure of the sensor (such as the breathable membrane and filter layer), the series arrangement will cause the total flow resistance to be linearly superimposed. Measured data shows that when three sensors are connected in series, the total flow resistance increases by 2.8 times compared to a single sensor, and the airflow velocity is attenuated by 40%, resulting in the remote sensor response time being extended to more than 120 seconds, which cannot meet the emergency monitoring needs of sudden leak incidents.

[0005] Furthermore, existing anti-clogging technologies are insufficiently applicable in heating wells. While heated gas lines can reduce condensation, the required heating power must be maintained at 5-10W, further exacerbating power consumption issues. Condensate eliminators are large (typically >100mm in diameter), making them difficult to fit within the confined space of wells (typically only 600-800mm in diameter). When hydrophobic coatings are applied to pumped gas lines, the high-velocity airflow destroys the coating's hydrophobic microstructure, resulting in a coating lifespan of only 3-6 months. Therefore, a specialized gas sampling and monitoring technology tailored to the high humidity, low power consumption, and small footprint of heating wells is urgently needed. Summary of the Invention

[0006] The purpose of the present invention is to provide a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, so as to solve the blockage failure of the traditional pump-suction gas path in the heating well chamber and realize low-power, long-term uninterrupted gas sampling and monitoring.

[0007] In order to achieve the above object, the technical solution adopted in the present invention is: The present invention provides a low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module for a heating well chamber, comprising a main gas circuit, the main gas circuit comprising an inlet pipe and an outlet pipe, wherein a gravity condensation separator is provided between the inlet pipe and the outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the outlet pipe; A heating element is installed at the air inlet of the air inlet pipe.

[0008] Preferably, the inner walls of the air inlet pipe and the air outlet pipe are coated with a hydrophobic coating.

[0009] Preferably, the hydrophobic coating is a perfluorodecyltriethoxysilane coating, and the thickness of the hydrophobic coating is 2-3 μm.

[0010] Preferably, the gravity condensation separator is a funnel-shaped shell, the large end of the funnel-shaped shell is connected to the air outlet of the air inlet pipe, and the small end of the funnel-shaped shell is connected to the air inlet of the air outlet pipe; A liquid collecting chamber is provided in the inner cavity of the funnel-shaped shell on one side close to the small opening; Three layers of baffles are axially arranged on one side of the inner cavity of the funnel-shaped shell near the large opening.

[0011] Preferably, a plurality of V-shaped grooves are arranged in parallel on the surface of the baffle; the liquid outlets of the V-shaped grooves are connected to the liquid collecting chamber.

[0012] Preferably, a float type drain valve is provided at the drain port provided on the liquid collecting chamber.

[0013] Preferably, the multiple gas sample monitoring components are connected in parallel on the gas outlet pipe in a star-shaped structure.

[0014] Preferably, the gas sample monitoring component is connected to the gas outlet pipe via an equal-diameter flow divider.

[0015] Preferably, the gas sample monitoring component includes a shell, and an air inlet and an air outlet are respectively provided at both ends of the shell. An annular guide groove is provided on the side wall of the inner cavity of the shell close to the air inlet, and the sensor installation chamber is downstream of the guide groove; the air outlet is placed downstream of the sensor installation chamber.

[0016] Preferably, the surface of the shell is an oxide layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, which realizes an efficient, stable and energy-saving gas sampling and monitoring function by integrating designs such as a gravity condensation separator, multi-channel parallel monitoring and heating elements. First, the setting of the gravity condensation separator effectively solves the problem of pipeline blockage caused by the accumulation of condensed water in traditional gas sampling, and realizes gas-liquid separation through the action of natural gravity without the need for additional energy consumption, which not only improves the reliability of the system, but also avoids the power consumption and maintenance costs brought by the use of electric drainage pumps. Secondly, the design of multiple gas sample monitoring components connected in parallel to the outlet pipe makes it possible for each channel to not interfere with each other, reduce flow resistance, and enable gas to pass through each sensor chamber more smoothly. Finally, the configuration of the heating element of the intake pipe and the consumption of the target gas by the sensor form a concentration difference. The dual driving force causes the gas molecules to diffuse to the detection area, without the need for additional power devices, which greatly reduces the energy consumption of system operation.

[0018] Furthermore, the gravity condensation separator adopts a funnel-shaped structure with three layers of baffles inside. When the humid gas enters the separator at a natural flow rate, the airflow direction makes three 90° turns. Due to the action of inertial force, it hits the baffle surface and condenses into droplets, thereby achieving the separation of water vapor and gas.

[0019] Furthermore, a plurality of V-shaped grooves are arranged in parallel on the surface of the baffle, so that the liquid droplets on the surface of the baffle converge along the grooves to the bottom liquid collecting chamber under the action of gravity, thereby improving the gas-liquid separation efficiency.

[0020] Furthermore, an annular guide groove is provided on the side wall of the inner cavity of the shell near the air inlet, which forces the air flow to flow along the tangent direction of the inner wall of the chamber to avoid the gas directly impacting the sensor probe and causing flow field turbulence.

[0021] Furthermore, the inner walls of the air inlet and outlet pipes are coated with a hydrophobic coating. The setting of the hydrophobic layer ensures that when residual water vapor condenses in the air path, the droplets will roll along the pipe wall to the liquid collecting chamber in a beaded form instead of forming a continuous water film, thereby avoiding air path blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an embodiment of the present invention; Figure 2 Schematic diagram of the arrangement of gas sample monitoring components according to an embodiment of the present invention; Among them, 1. Air inlet pipe; 2. Air outlet pipe; 3. Gravity condensation separator; 4. Gas sample monitoring component; 5. Equal diameter diverter. DETAILED DESCRIPTION

[0023] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0024] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0025] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0026] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0027] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0028] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0029] Example 1 This embodiment 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, including a main gas path, which includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the air outlet pipe.

[0030] A heating element is installed at the air inlet of the air inlet pipe.

[0031] In this embodiment, the main gas path abandons the traditional pumping structure and instead incorporates a heating element at its inlet, leveraging the thermal diffusion principle of gas molecules to achieve passive gas inhalation. This thermal diffusion naturally moves gas molecules toward the detection zone, eliminating the need for an additional power device and significantly reducing power consumption.

[0032] The gravity condensation separator is arranged at the front end of the main gas path and is used to remove water vapor. Its working principle is to utilize the density difference between water vapor and gas. When the gas containing water vapor enters the gravity condensation separator, the water vapor condenses and settles under the action of gravity, thereby achieving the separation of water vapor and gas.

[0033] Multiple gas sample monitoring components are arranged in parallel on the main gas path. This design can reduce flow resistance and enable the gas to pass through each sensor chamber more smoothly.

[0034] The heating element creates a temperature microfield of 3-5°C in the detection zone. Due to the Soret effect, gas molecules migrate in a directional manner due to the temperature gradient. Simultaneously, the sensor's consumption of the target gas creates a concentration differential. These dual driving forces cause gas molecules to diffuse toward the detection zone at an average velocity of approximately 0.1-0.3 cm / s. Calculations show that under chamber humidity of 90% and a temperature of 20°C, the diffusion time of methane molecules through an 80mm gas path is approximately 5-8 seconds, meeting real-time monitoring requirements.

[0035] Example 2 This embodiment 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, including a main gas path, which includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the air outlet pipe.

[0036] A heating element is installed at the air inlet of the air inlet pipe.

[0037] The inner walls of the air inlet pipe and the air outlet pipe are coated with a hydrophobic coating.

[0038] In this embodiment, by coating the inner wall of the gas pipeline with a hydrophobic coating, it is possible to further prevent water vapor from condensing and accumulating on the inner wall of the gas pipeline, thereby avoiding gas pipeline blockage.

[0039] Example 3 Based on Example 1, this Example 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, wherein the hydrophobic coating is a perfluorodecyltriethoxysilane coating, and the thickness of the hydrophobic coating is 2-3 μm.

[0040] In this embodiment, the coating's surface features a micro-nano composite roughness (roughness Ra = 1.2-1.5 μm). Based on the Wenzel and Cassie-Baxter models, the contact angle of a water droplet on the coating surface can reach 152° ± 3°, with a rolling angle of < 5°. When residual water vapor condenses in the gas path, the droplets roll along the tube wall into the liquid collection cavity in a bead-like form, rather than forming a continuous water film. Accelerated aging tests show that the coating's hydrophobicity degrades by less than 8% after 2000 hours of continuous operation in a hot and humid environment at 80°C.

[0041] Example 4 This embodiment 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, including a main gas path, which includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the air outlet pipe.

[0042] A heating element is installed at the air inlet of the air inlet pipe.

[0043] The gravity condensation separator is a funnel-shaped shell, the large end of the funnel-shaped shell is connected to the air outlet of the air inlet pipe, and the small end of the funnel-shaped shell is connected to the air inlet of the air outlet pipe; A liquid collecting chamber is provided in the inner cavity of the funnel-shaped shell on one side close to the small opening; Three layers of baffles are axially arranged on one side of the inner cavity of the funnel-shaped shell near the large opening.

[0044] In this embodiment, the gravity condensation separator adopts a funnel-shaped structure (upper diameter 50mm, lower cone angle 60°) with three layers of baffles inside. When moist gas enters the separator at a natural flow rate of 0.5L / min, the airflow direction undergoes three 90° turns. According to Stokes' law, water vapor particles (approximately 1-5μm in diameter) impact the baffle surfaces due to inertial force and condense into droplets.

[0045] In this embodiment, the three-layer baffle is fixed to the inner wall of the separator by ultrasonic welding.

[0046] The spacing between the three layers of baffles is 10mm±0.2mm.

[0047] Example 5 Based on Example 4, this Example 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, wherein a plurality of V-shaped grooves are arranged in parallel on the surface of the baffle; the liquid outlet of the V-shaped groove is connected to the liquid collecting chamber.

[0048] In this embodiment, the baffle surface is processed with a 0.1mm deep V-shaped groove. Under the action of gravity, the droplets converge along the groove to the bottom liquid collection chamber, and the separation efficiency can reach 92%-95%. The measured data shows that after the separator is processed, the water content of the gas is reduced from 18g / m 3 Down to 1.2g / m 3 the following.

[0049] Field tests have shown that the separator can operate continuously for 30 days without water accumulation or blockage under conditions of a gas flow rate of 0.5-1L / min and a humidity of 85%-95%.

[0050] Example 6 On the basis of Example 4, this Example 1 provides a low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module for a heating well chamber, wherein a float-type drain valve is provided at the drain port provided on the liquid collecting chamber.

[0051] In this embodiment, when the liquid accumulates to 2 / 3 of the volume of the chamber, the float rises and drives the valve to open for drainage.

[0052] Example 7 This embodiment 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, including a main gas path, which includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the air outlet pipe.

[0053] A heating element is installed at the air inlet of the air inlet pipe.

[0054] The multiple gas sample monitoring components are connected in parallel on the gas outlet pipeline in a star-shaped structure.

[0055] In this embodiment, there are five gas sample monitoring components. Actual measurements show that the total flow resistance of the five chambers in parallel (0.8 kPa·s / L) is reduced by 85.7% compared to the series connection (5.6 kPa·s / L).

[0056] The five chambers are methane sensor chamber, hydrogen sulfide sensor chamber, oxygen sensor chamber, CO sensor chamber, and temperature sensor chamber.

[0057] Example 8 On the basis of Example 7, this Example 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, wherein the gas sample monitoring component is connected to the gas outlet pipe via an equal-diameter flow divider.

[0058] Example 9 On the basis of Example 7, this Example 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, wherein the gas sampling monitoring component includes a shell, and an air inlet and an air outlet are respectively provided at both ends of the shell. An annular guide groove is provided on the side wall of the inner cavity of the shell close to the air inlet, and a sensor installation chamber is downstream of the guide groove; the air outlet is placed downstream of the sensor installation chamber.

[0059] The air inlet is a uniformly arranged diffusion hole. In this embodiment, a diffusion-type air inlet structure is adopted inside each chamber, and the average residence time of the gas in the chamber is controlled at 1.5-2 seconds, which not only ensures the full response of the sensor (response time T90 <30 seconds) but also avoids cross-interference caused by gas retention.

[0060] In this embodiment, the guide groove forces the airflow to flow along the tangential direction of the inner wall of the chamber, thereby preventing the gas from directly impacting the sensor probe and causing flow field turbulence.

[0061] Example 10 Based on Example 7, this Example 1 provides a low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module for a heating well chamber, wherein the surface of the shell is an oxide layer.

[0062] Example 11 This embodiment 1 provides a low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, including a main gas path, which includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sampling monitoring components are connected in parallel to the air outlet pipe.

[0063] A heating element is installed at the air inlet of the air inlet pipe.

[0064] In this embodiment, the main gas path abandons the traditional pumping structure and instead incorporates a heating element at its inlet, leveraging the thermal diffusion principle of gas molecules to achieve passive gas inhalation. This thermal diffusion naturally moves gas molecules toward the detection zone, eliminating the need for an additional power device and significantly reducing power consumption.

[0065] The gravity condensation separator is arranged at the front end of the main gas path and is used to remove water vapor. Its working principle is to utilize the density difference between water vapor and gas. When the gas containing water vapor enters the gravity condensation separator, the water vapor condenses and settles under the action of gravity, thereby achieving the separation of water vapor and gas.

[0066] Multiple gas sample monitoring components are arranged in parallel on the main gas path. This design can reduce flow resistance and enable the gas to pass through each sensor chamber more smoothly.

[0067] Its working mode: The detection cycle starts every 10 minutes. The heating element preheats for 30 seconds to establish a stable temperature field in the detection zone. The sensor operates for 2 minutes to complete gas analysis before entering a dormant state. The average power consumption during the entire cycle is only 0.086W. With a 12Ah lithium-thionyl chloride battery (energy density 450Wh / kg), the theoretical battery life is up to 730 days (2 years). During the dormant period, a solenoid valve (power consumption <0.01W) at the gas outlet closes to prevent moisture backflow from the well chamber. A slight positive pressure (50Pa) is maintained in the detection zone, ensuring rapid gas refreshment upon the next startup.

[0068] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber, characterized in that: The main gas circuit includes an air inlet pipe and an air outlet pipe, wherein a gravity condensation separator is provided between the air inlet pipe and the air outlet pipe, and a plurality of gas sample monitoring components are connected in parallel to the air outlet pipe; A heating element is installed at the air inlet of the air inlet pipe.

2. A low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 1, characterized in that: The inner walls of the air inlet pipe and the air outlet pipe are coated with a hydrophobic coating.

3. A low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 2, characterized in that: The hydrophobic coating is a perfluorodecyltriethoxysilane coating, and the thickness of the hydrophobic coating is 2-3 μm.

4. A low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 1, characterized in that: The gravity condensation separator is a funnel-shaped shell, the large end of the funnel-shaped shell is connected to the air outlet of the air inlet pipe, and the small end of the funnel-shaped shell is connected to the air inlet of the air outlet pipe; A liquid collecting chamber is provided in the inner cavity of the funnel-shaped shell on one side close to the small opening; Three layers of baffles are axially arranged on one side of the inner cavity of the funnel-shaped shell near the large opening.

5. A low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 4, characterized in that: A plurality of V-shaped grooves are arranged in parallel on the surface of the baffle; the liquid outlets of the V-shaped grooves are connected to the liquid collecting cavity.

6. A low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module for a heating well chamber according to claim 4, characterized in that: A float type drain valve is provided at the drain port provided on the liquid collecting chamber.

7. The low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 1 is characterized in that: The multiple gas sample monitoring components are connected in parallel on the gas outlet pipeline in a star-shaped structure.

8. The low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 7 is characterized in that: The gas sample monitoring component is connected to the gas outlet pipe via an equal-diameter flow divider.

9. The low-power, pump-free, anti-blocking multi-channel gas sampling and monitoring module for a heating well chamber according to claim 1, characterized in that: The gas sample monitoring component includes a shell, and an air inlet and an air outlet are respectively provided at both ends of the shell. An annular guide groove is provided on the side wall of the inner cavity of the shell close to the air inlet, and the sensor installation chamber is downstream of the guide groove; the air outlet is placed downstream of the sensor installation chamber.

10. A low-power, pump-free, anti-blocking, multi-channel gas sampling and monitoring module for a heating well chamber according to claim 9, characterized in that: The surface of the shell is an oxide layer.

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