Mining pump suction type intrinsic safety ethylene sensor with automatic zero setting function

Abstract

The invention relates to the technical field of ethylene sensors, in particular to an automatic zero setting mining pump suction type intrinsic safety type ethylene sensor, which comprises a main body and an ethylene sensing element arranged in the main body, the first air pump is communicated with the measurement environment and is used for extracting gas in the measurement environment for measurement; the second air pump is communicated with the reference environment and is used for extracting reference environment gas for measurement; wherein the second air pump firstly extracts the reference environment for measurement, and then the first air pump extracts the measurement environment gas for measurement by taking a measurement value obtained by measurement of the reference environment as a zero point. The second air pump is used for extracting reference environment gas for measurement, a zero point base line is automatically established, then the first air pump is used for extracting measurement environment gas for ethylene concentration detection, and therefore rapid and automatic zero setting of the sensor is achieved. According to the scheme, the problem of zero drift caused by power failure is effectively solved, and the defect that zero recovery needs to be waited for a long time after field installation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ethylene sensors, in particular to an automatic zeroing pump-suction intrinsically safe ethylene sensor for mining. Background Art

[0002] Existing ethylene gas sensors are used in coal mine shafts, mining faces, goafs, return air tunnels, electromechanical rooms, etc., and require continuous monitoring of ethylene gas concentration. When the concentration exceeds the limit, it can automatically issue sound and light alarms. They can be carried by underground coal mine workers, inspection personnel, and underground management personnel, and can also be used fixedly in the above-mentioned places.

[0003] Ethylene gas sensors use electrochemical ethylene sensing elements to measure ethylene gas in confined spaces in coal mines. Due to the characteristics of electrochemical ethylene sensing elements, they require an uninterrupted power supply. If the power supply is interrupted, the measurement zero point will drift. Depending on the duration of the power outage, it may take 0.5 to 10 hours, or even longer, for the zero point to reach a stable value.

[0004] The power supply to the sensor may be interrupted for days to months between the time the product leaves the factory and the time the user installs it. This means that after on-site installation, the sensor will take more than 10 hours to measure normally and cannot immediately reflect the ethylene data in the environment, posing a safety hazard.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0006] The present invention provides an automatic zeroing pump-suction intrinsically safe ethylene sensor for mining and a zeroing method thereof, thereby effectively solving the problems in the background technology.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: an automatic zeroing mining pump-suction intrinsically safe ethylene sensor, comprising: a main body and an ethylene sensing element disposed in the main body; a first air pump, the first air pump being in communication with the measurement environment and being used to extract gas from the measurement environment for measurement; a second air pump, the second air pump being in communication with the reference environment and being used to extract reference environment gas for measurement; The second air pump first extracts a reference environment for measurement, and uses the measurement value obtained by the reference environment measurement as the zero point, and then the first air pump extracts the measurement environment gas for measurement.

[0008] Furthermore, a first air nozzle and a second air nozzle are provided on the side of the main body, the first air nozzle is connected to the first air pump, and the first air nozzle is used to connect to the air pipe of the measurement environment, the second air nozzle is connected to the second air pump, and the second air nozzle is used to connect to the air pipe of the reference environment.

[0009] Furthermore, an air chamber is provided in the main body, the ethylene sensor element is provided in the air chamber, and the first air pump and the second air pump are respectively connected to the air chamber to transport the extracted gas into the air chamber.

[0010] Furthermore, the first air pump is located on a side close to the ethylene sensing element, and the second air pump is located on a side of the first air pump away from the ethylene sensing element.

[0011] Furthermore, a processor is provided in the main body, and the processor is electrically connected to the ethylene sensor element, the first air pump and the second air pump, and is used to process the measurement data of the ethylene sensor element and control the working status of the first air pump and the second air pump.

[0012] Furthermore, it also includes an infrared remote control receiver, which is electrically connected to the processor and is used to receive infrared control signals to adjust the working time of the first air pump and the second air pump.

[0013] Furthermore, when the processor controls the working states of the first air pump and the second air pump, the first air pump and the second air pump work alternately and cyclically.

[0014] Furthermore, when the first air pump and the second air pump work in an alternating cycle, the working time of the first air pump is greater than the working time of the second air pump.

[0015] Furthermore, a display is provided on the outer wall of the main body, and the display is electrically connected to the processor for displaying the measurement results of the ambient gas.

[0016] The beneficial effects of this invention are as follows: by setting up a dual air pump system, the second air pump first draws reference ambient gas for measurement, automatically establishing a zero baseline, and then the first air pump draws the measurement ambient gas for ethylene concentration detection, thereby achieving rapid automatic zeroing of the sensor. This solution effectively solves the problem of zero drift caused by power outages in electrochemical ethylene sensors, avoiding the long wait for zero point recovery after on-site installation, achieving immediate installation and improving response speed and measurement accuracy. This structure is suitable for harsh environments such as coal mines, and offers excellent safety and practicality, helping to improve the efficiency and safety of gas monitoring in underground operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure numerals: 1. Ethylene sensor element; 2. First air pump; 3. Second air pump; 4. Display; 5. Processor; 6. First air nozzle; 7. Second air nozzle; 8. Air chamber. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figure 1 Shown: An automatic zeroing pump-suction intrinsically safe ethylene sensor for mining, comprising: A main body and an ethylene sensor element 1 disposed in the main body; A first air pump 2, which is connected to the measurement environment and is used to extract the measurement environment gas for measurement; A second air pump 3, which is connected to the reference environment and is used to extract reference environment gas for measurement; The second air pump 3 first extracts the reference environment for measurement, and uses the measurement value obtained by the reference environment measurement as the zero point. The first air pump 2 then extracts the measurement environment gas for measurement.

[0022] By setting up a dual-air pump system, the second air pump (3) first draws reference ambient gas for measurement, automatically establishing a zero baseline. The first air pump (2) then draws the measurement ambient gas for ethylene concentration detection, enabling rapid automatic zeroing of the sensor. This solution effectively addresses the zero drift problem associated with electrochemical ethylene sensors caused by power outages, avoiding the long wait for zero point recovery after on-site installation. This solution enables immediate installation and improves response speed and measurement accuracy. This structure is suitable for harsh environments such as coal mines, offering excellent safety and practicality, and will help improve gas monitoring efficiency and safety assurance capabilities in underground operations.

[0023] The measurement environment is a confined space under the mine, and there is ethylene gas in the measurement environment. The reference environment can be set to outside the confined space, where the ethylene gas is approximately zero, thus serving as a reference.

[0024] In this embodiment, a first air nozzle 6 and a second air nozzle 7 are provided on the side of the main body. The first air nozzle 6 is connected to the first air pump 2, and the first air nozzle 6 is used to connect to the air pipe of the measurement environment. The second air nozzle 7 is connected to the second air pump 3, and the second air nozzle 7 is used to connect to the air pipe of the reference environment.

[0025] The side of the main body is equipped with a first gas nozzle 6 and a second gas nozzle 7. The first gas nozzle 6 is connected to the first air pump 2 and is used to connect to the gas sampling pipeline of the measurement environment, ensuring that the measured gas is smoothly introduced into the sensor for concentration detection. The second gas nozzle 7 is connected to the second air pump 3 and is used to connect to the gas pipeline of the reference environment, ensuring that the reference gas is stably delivered to the sensor for zeroing measurement. This structural design facilitates equipment installation and maintenance, promotes independent and unobstructed gas paths, and improves sampling efficiency and the accuracy and reliability of automatic zeroing.

[0026] An air chamber 8 is provided in the main body, the ethylene sensor element 1 is provided in the air chamber 8 , the first air pump 2 and the second air pump 3 are respectively connected to the air chamber 8 to transport the extracted gas into the air chamber 8 .

[0027] The sensor body houses an air chamber 8, within which the ethylene sensor element 1 is mounted. The ethylene sensor element 1 is used to detect the concentration of gas entering the chamber. A first air pump 2 and a second air pump 3 are each connected to the chamber 8, capable of delivering gases extracted from the measurement and reference environments, respectively, into the chamber 8. This structural design allows the ethylene sensor element 1 to complete zeroing and measurement within the same detection space, reducing measurement errors and improving zeroing consistency and detection accuracy. It also simplifies the internal gas path structure and enhances system stability.

[0028] As a preference of the above embodiment, the first air pump 2 is located on a side close to the ethylene sensor element 1 , and the second air pump 3 is located on a side of the first air pump 2 away from the ethylene sensor element 1 .

[0029] First air pump 2, located near the ethylene sensor element 1, efficiently delivers ambient gas to chamber 8, enabling rapid response. Second air pump 3, located on the side of first air pump 2 away from the ethylene sensor element 1, introduces reference ambient gas into chamber 8 during the zeroing phase. This structural layout helps optimize the gas flow path, avoids cross-contamination, and enhances the independence and accuracy of the zeroing and measurement processes. It also facilitates the rational layout of the sensor's internal space and airflow organization, improving the reliability and stability of the overall detection system.

[0030] In this embodiment, a processor 5 is also provided in the main body, which is electrically connected to the ethylene sensor element 1, the first air pump 2 and the second air pump 3, and is used to process the measurement data of the ethylene sensor element 1 and control the working status of the first air pump 2 and the second air pump 3.

[0031] Processor 5 is electrically connected to ethylene sensor element 1, first air pump 2, and second air pump 3. It analyzes and processes the measurement data collected by ethylene sensor element 1 and controls the start and stop sequence of first and second air pumps 2 and 3 according to preset logic. Processor 5 automatically controls the zeroing and measurement processes, intelligently switching air sources based on actual needs. This ensures the accuracy and real-time nature of measurement data, improves the system's automation and ease of use, and further enhances the sensor's practicality and safety in complex environments such as coal mines.

[0032] The infrared remote control receiver is also included, and is electrically connected to the processor 5 for receiving infrared control signals to adjust the working time of the first air pump 2 and the second air pump 3.

[0033] The infrared remote control receiver is electrically connected to the processor 5, receiving external infrared control signals and transmitting instructions to the processor 5 to adjust the operating times of the first and second air pumps 2 and 3. This design allows users to flexibly set zeroing and measurement cycles without disassembling the device or accessing internal circuitry, improving the convenience and safety of on-site operations. It is particularly suitable for use in scenarios where frequent maintenance is inconvenient, such as underground coal mines, and facilitates rapid remote configuration and intelligent management of sensor operating parameters.

[0034] As a preference of the above embodiment, when the processor 5 controls the working states of the first air pump 2 and the second air pump 3, the first air pump 2 and the second air pump 3 work alternately and cyclically.

[0035] When controlling the working status of the first air pump 2 and the second air pump 3, the processor 5 enables the two to work alternately and cyclically, that is, by periodically switching the gas input of the reference environment and the measurement environment, automatic zeroing and continuous measurement are combined to improve the long-term stability and measurement accuracy of the system.

[0036] When the first air pump 2 and the second air pump 3 work in an alternating cycle, the working time of the first air pump 2 is greater than the working time of the second air pump 3 .

[0037] During the alternating cycle operation of the first air pump 2 and the second air pump 3, the working time of the first air pump 2 is set to be greater than the working time of the second air pump 3, so that the equipment can mainly measure the environmental gas detection in each cycle, supplemented by the zeroing process, taking into account both real-time and accuracy, and ensuring that the sensor can continuously and stably reflect the concentration changes of ethylene gas in the coal mine environment.

[0038] The processor controls the first and second air pumps 2, 3 to operate in timed intervals. For example, the second air pump 3 operates for duration A, while the first air pump 2 is inactive. After duration A, the first air pump 2 operates for duration B, while the second air pump 3 is inactive. After duration B, the second air pump 3 operates again for duration A, while the first air pump 2 is inactive. This cycle repeats. Durations A and B can be adjusted using an infrared remote control; typically, A is set to 3 minutes and B to 10 minutes.

[0039] After on-site installation, the second vacuum pump 3 operates for a duration A, generating a set of measurement data. Processor 5 filters and averages this data to produce a measurement value a. When the first vacuum pump 2 switches to operation, measurement value a serves as the sensor's zero point. During subsequent cycles, measurement value a dynamically changes. Based on the dynamic measurement value a, processor 5 applies an embedded program algorithm to dynamically linearly construct the measurement range, thereby achieving real-time measurement of ethylene gas within the wall.

[0040] As a preference of the above embodiment, a display 4 is further provided on the outer wall of the main body. The display 4 is electrically connected to the processor 5 and is used to display the measurement results of the ambient gas.

[0041] A display 4 is mounted on the outer wall of the main body and electrically connected to a processor 5. It displays real-time data on the measured ethylene concentration in the ambient gas. This design allows operators to intuitively access test results, improving on-site judgment and response efficiency. Display 4 can be used in conjunction with the alarm system to provide over-limit warnings, enhancing the sensor's practicality and safety in hazardous environments like coal mines, and contributing to a more intelligent and user-friendly gas monitoring system.

[0042] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0043] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may 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 the present invention based on specific circumstances.

[0044] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An automatic zeroing pump-suction intrinsically safe ethylene sensor for mining, characterized in that: include: a main body and an ethylene sensing element disposed in the main body; a first air pump, the first air pump being in communication with the measurement environment and being used to extract gas from the measurement environment for measurement; a second air pump, the second air pump being in communication with the reference environment and being used to extract reference environment gas for measurement; The second air pump first extracts a reference environment for measurement, and uses the measurement value obtained by the reference environment measurement as the zero point, and then the first air pump extracts the measurement environment gas for measurement.

2. The automatic zeroing mining pump-suction intrinsically safe ethylene sensor according to claim 1 is characterized in that: The side of the main body is provided with a first air nozzle and a second air nozzle. The first air nozzle is connected to the first air pump and is used to connect to the air pipe of the measurement environment. The second air nozzle is connected to the second air pump and is used to connect to the air pipe of the reference environment.

3. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 1, characterized in that: An air chamber is provided in the main body, the ethylene sensor element is provided in the air chamber, and the first air pump and the second air pump are respectively communicated with the air chamber to transport the extracted gas into the air chamber.

4. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 1, characterized in that: The first air pump is located on a side close to the ethylene sensing element, and the second air pump is located on a side of the first air pump away from the ethylene sensing element.

5. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 1, characterized in that: A processor is also provided in the main body, and is electrically connected to the ethylene sensor element, the first air pump and the second air pump, for processing the measurement data of the ethylene sensor element and controlling the working states of the first air pump and the second air pump.

6. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 5, characterized in that: It also includes an infrared remote control receiver, which is electrically connected to the processor and is used to receive infrared control signals to adjust the working time of the first air pump and the second air pump.

7. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 5, characterized in that: When the processor controls the working states of the first air pump and the second air pump, the first air pump and the second air pump work alternately and cyclically.

8. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 7, characterized in that: When the first air pump and the second air pump work in an alternating cycle, the working time of the first air pump is greater than the working time of the second air pump.

9. The automatic zeroing pump-suction intrinsically safe ethylene sensor for mining use according to claim 5, characterized in that: The outer wall of the main body is further provided with a display, which is electrically connected to the processor and is used to display the measurement results of the ambient gas.

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