Portable split gas detection device and method

Abstract

The invention relates to the field of gas detection, and particularly discloses a portable split gas detection device and method.A gas collection part collects underground gas and transmits the underground gas to a gas sensor, and the gas sensor converts the gas into a gas electric signal and transmits the gas electric signal to a gas collection controller; the gas collection controller transmits a gas electric signal to the ground communication module through the underground communication module and then transmits the gas electric signal to the monitoring controller, the monitoring controller analyzes the gas electric signal, and when the condition of underground gas is abnormal through analysis, an alarm signal is transmitted to the underground communication module through the ground communication module; and then the gas is transmitted to the gas collection controller, and the gas collection controller controls the underground alarm to give an alarm. According to the method, a guide pipe does not need to be prolonged, the gas detection precision is effectively improved, real-time sharing of ground and underground data is achieved, and the operation safety of an effective operation space is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of gas detection, and in particular to a portable split gas detection device and method. Background Art

[0002] In the field of power supply operations, limited space operations require the implementation of a standardized process of ventilation first, detection, and then operation. The regulations require that underground operations must be ventilated for a long time and gas detection must be performed every half an hour to ensure the personal safety of underground workers. The current method of underground gas detection is to extend the gas nozzle catheter of the gas detector into the well to collect underground gas for detection. However, the conventional gas detector's air inlet catheter cannot be extended to the bottom of the well due to length limitations, resulting in inconsistencies between the actual detected gas data and the operating position, posing a safety hazard. Extending the air inlet catheter may lead to insufficient gas detection accuracy. At the same time, the well operators and the outside supervisors cannot share the gas detection values ​​in real time, and there is a lag in information transmission, which is prone to safety hazards. Summary of the invention

[0003] To solve the above problems, the present invention provides a portable split gas detection device and method, which does not require an extended catheter, effectively improves the accuracy of gas detection, and realizes real-time sharing of surface and underground data, effectively improving the operational safety of the effective working space.

[0004] In a first aspect, the technical solution of the present invention provides a portable split gas detection device, including an on-well monitoring terminal placed on the well and a gas collection terminal carried down the well; The gas collection end includes a gas collection component, a gas sensor, a gas collection controller, a downhole alarm and a downhole communication module; the uphole monitoring end includes a monitoring controller and an uphole communication module; the gas sensor, the downhole alarm and the downhole communication module are electrically connected to the gas collection controller respectively, the uphole communication module is electrically connected to the monitoring controller, and the downhole communication module communicates wirelessly with the uphole communication module; The gas collection component collects downhole gas and transmits it to the gas sensor. The gas sensor converts the gas into a gas electrical signal and transmits it to the gas collection controller. The gas collection controller transmits the gas electrical signal to the uphole communication module via the downhole communication module, and then transmits it to the monitoring controller. The monitoring controller analyzes the gas electrical signal. When the analysis shows that the downhole gas state is abnormal, the alarm signal is transmitted to the downhole communication module via the uphole communication module, and then transmitted to the gas collection controller. The gas collection controller controls the downhole alarm to sound.

[0005] In an optional embodiment, the gas collection component includes a gas collection nozzle, a first gas conduit, a second gas conduit and a gas extraction pump; The gas collection nozzle is connected to the input end of the air pump through the first gas conduit, and the output end of the air pump is connected to the gas sensor through the second gas conduit.

[0006] In an optional embodiment, the gas collection end further includes a display screen, the display screen is electrically connected to the gas collection controller, and the gas collection controller displays the alarm signal on the display screen; The monitoring controller is also used to transmit the gas analysis data to the downhole communication module via the uphole communication module, and then to the gas collection controller, and the gas collection controller displays the gas analysis data on the display screen.

[0007] In an optional embodiment, the gas collection end also includes a timer and a standby control circuit; the timer and the standby control circuit are electrically connected to the gas collection controller respectively; the gas collection controller executes a sleep mode and starts timing through the standby control circuit each time the gas electrical signal is transmitted to the uphole monitoring end, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end.

[0008] In an optional embodiment, the gas collection end also includes a lithium battery for power supply.

[0009] In a second aspect, the technical solution of the present invention provides a portable split gas detection method, comprising the following steps: The well monitoring end establishes a communication connection with the gas collection end; The gas collection end converts the collected underground gas into gas electrical signals at preset intervals and transmits them to the uphole monitoring end; The monitoring end on the well analyzes the gas electrical signal to obtain gas analysis data; Determine the gas status downhole based on gas analysis data; If the underground gas state is abnormal, the alarm signal will be transmitted to the gas collection end, and the gas collection end will sound an alarm.

[0010] In an optional implementation, the well monitoring end establishes a communication connection relationship with the gas collection end, specifically including: The well monitoring end sends the first connection request to the gas collection end; The gas collection end responds to the first connection request and sends it to the well monitoring end via its own unique identification; The well monitoring end detects whether the unique identifier of the gas collection end has been bound according to the pre-stored binding relationship table; If bound, a second connection request is sent to the gas collection end, and the gas collection end responds to the second connection request to establish a communication connection relationship with the well monitoring end; If not bound, send a verification request with the unique identifier of the gas collection terminal to the backend; Receive verification request results from the backend; If the verification is successful, the binding relationship table is updated, and the gas collection end sends a second connection request. The gas collection end responds to the second connection request and establishes a communication connection relationship with the well monitoring end; If the verification fails, a binding exception is prompted.

[0011] In an optional embodiment, after the well monitoring end analyzes the gas electrical signal to obtain gas analysis data, the following steps are also included: The gas analysis data is transmitted to the gas collection terminal, and the gas collection terminal displays it.

[0012] In an optional implementation, the gas collection end converts the collected downhole gas into a gas electrical signal at a preset interval and transmits it to the uphole monitoring end, specifically including: After responding to the first second connection request, the gas collection end converts the collected downhole gas into a gas electrical signal and transmits it to the uphole monitoring end, then executes the sleep mode and starts timing, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end; After that, each time the gas electrical signal is transmitted to the well monitoring end, the sleep mode is executed and the timing is started. After the preset time, the sleep mode is exited and the gas electrical signal is transmitted to the well monitoring end after the gas is collected.

[0013] A portable split gas detection device and method provided by the present invention has the following beneficial effects compared with the prior art: the gas detection device is split, divided into an above-hole part and a downhole part, the two parts communicate wirelessly, the downhole part collects gas at a precise position and transmits it to the above-hole part, the above-hole part performs gas analysis and feeds back the analysis alarm results to the downhole in real time, without the need to extend the catheter, effectively improving the accuracy of gas detection, and realizing real-time sharing of above-hole and downhole data, effectively improving the operation safety of the effective working space. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The present invention provides a portable split gas detection device according to an embodiment of the present invention.

[0015] Figure 2 It is a flow chart of a portable split gas detection method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0018] Figure 1 is a schematic block diagram of the structure of a portable split gas detection device provided by an embodiment of the present invention, such as Figure 1 As shown, the device includes an uphole monitoring terminal and a gas collection terminal, wherein the uphole monitoring terminal is placed on the well to analyze the gas electrical signal to realize gas data detection, and the gas collection terminal is carried underground to realize underground gas collection and convert the gas into an electrical signal and transmit it to the uphole monitoring terminal for gas detection.

[0019] The gas collection end includes a gas collection component, a gas sensor, a gas collection controller, a downhole alarm and a downhole communication module; the uphole monitoring end includes a monitoring controller and an uphole communication module; the gas sensor, the downhole alarm and the downhole communication module are electrically connected to the gas collection controller respectively, the uphole communication module is electrically connected to the monitoring controller, and the downhole communication module communicates wirelessly with the uphole communication module. The downhole communication module and the uphole communication module can be a Bluetooth module or a GIM / SIM communication module, etc.

[0020] The gas collection component collects the gas downhole and transmits it to the gas sensor. The gas sensor converts the gas into a gas electrical signal and transmits it to the gas collection controller. The gas collection controller transmits the gas electrical signal to the uphole communication module via the downhole communication module, and then transmits it to the monitoring controller. The monitoring controller analyzes the gas electrical signal. When the analysis shows that the downhole gas state is abnormal, the alarm signal is transmitted to the downhole communication module via the uphole communication module, and then transmitted to the gas collection controller. The gas collection controller controls the downhole alarm to alarm. In an optional embodiment, the gas collection end also includes a display screen, which is electrically connected to the gas collection controller, and the gas collection controller displays the alarm signal on the display screen. The monitoring controller is also used to transmit gas analysis data (such as gas concentration) to the downhole communication module via the uphole communication module, and then transmit it to the gas collection controller. The gas collection controller displays the gas analysis data on the display screen. The real-time sharing of gas detection values ​​between the operators in the well and the supervisors outside the well is realized, which effectively improves the safety of limited space operations.

[0021] In this embodiment, gas collection is achieved by a gas collection component, which specifically includes a gas collection nozzle, a first gas conduit, a second gas conduit and an air pump. The gas collection nozzle is connected to the input end of the air pump through the first gas conduit, and the output end of the air pump is connected to the gas sensor through the second gas conduit. When the air pump is started, the gas is sucked from the gas collection nozzle, and then transmitted to the gas sensor to convert the gas into a gas electrical signal. In this embodiment, gas is collected at the work site without the need for an overly long conduit, which effectively improves the accuracy of gas detection.

[0022] This embodiment uses a lithium battery to power the gas collection end to meet the requirements of miniaturization and portability. In addition, considering that gas detection only needs to be performed once every half an hour, in order to save electricity, the gas collection end of this embodiment is also provided with a timer and a standby control circuit; the timer and the standby control circuit are electrically connected to the gas collection controller respectively; the gas collection controller executes the sleep mode and starts timing through the standby control circuit each time the gas electrical signal is transmitted to the uphole monitoring end, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end. For example, the preset time is half an hour. After each collection and transmission to the monitoring control end, the sleep mode can be executed. It should be noted that after a certain period of time after each transmission of the gas electrical signal to the uphole monitoring end, the sleep mode is executed to receive the alarm signal and gas detection data to avoid failure to receive the alarm signal.

[0023] An embodiment of a portable split gas detection device is described in detail above. Based on the portable split gas detection device described in the above embodiment, an embodiment of the present invention further provides a portable split gas detection method corresponding to the method.

[0024] Figure 2 FIG. 1 is a flow chart of a portable split gas detection method provided by an embodiment of the present invention. Figure 2 As shown, the method includes the following steps.

[0025] like Figure 2 As shown, the method includes the following steps.

[0026] S1, the well monitoring end and the gas collection end establish a communication connection relationship.

[0027] S1.1, the well monitoring end sends the first connection request to the gas collection end.

[0028] S1.2, the gas collection end responds to the first connection request and sends it to the well monitoring end via its own unique identification.

[0029] S1.3, the well monitoring end detects whether the unique identifier of the gas collection end has been bound according to the pre-stored binding relationship table.

[0030] S1.4, if bound, send a second connection request to the gas collection end, and the gas collection end responds to the second connection request to establish a communication connection relationship with the well monitoring end.

[0031] S1.5, if not bound, send a verification request carrying the unique identifier of the gas collection end to the background.

[0032] S1.6, receiving the verification request result fed back from the background.

[0033] S1.7, if the verification is successful, the binding relationship table is updated, and the gas collection end sends a second connection request. The gas collection end responds to the second connection request and establishes a communication connection relationship with the well monitoring end.

[0034] S1.8, if the verification fails, a binding exception prompt will appear.

[0035] This embodiment uses two connection requests and a verification mechanism to ensure that only authenticated gas collection terminals can establish a communication connection with the well monitoring terminal, so as to effectively prevent unauthorized access and improve the security of the entire system. Before establishing a communication connection, the well monitoring terminal verifies the unique identifier of the gas collection terminal and checks whether it has been bound in the system to ensure the reliability and accuracy of the data source and avoid data errors caused by misidentification or impersonation of the device. At the same time, the system supports dynamic binding and updating of the binding relationship table. When a new gas collection terminal is added or an existing device is replaced, the binding relationship can be verified and updated through the background without reconfiguring the entire system, which improves the flexibility and scalability of the system. Through the pre-stored binding relationship table and the background verification mechanism, the system can quickly identify and solve problems in the communication connection. When a binding anomaly is found, the problem can be quickly located and corresponding measures can be taken to deal with it, thereby improving the maintenance efficiency of the system. This embodiment avoids the impact of illegal devices or incorrect configurations on system stability through strict identity authentication and binding management. At the same time, the dynamic update capability of the system also enables it to adapt to different working environments and demand changes, ensuring the stable operation of the system.

[0036] S2, the gas collection end converts the collected downhole gas into a gas electrical signal at a preset time interval and transmits it to the uphole monitoring end.

[0037] In this embodiment, after the gas collection end responds to the first second connection request, it converts the collected downhole gas into a gas electrical signal and transmits it to the uphole monitoring end, then executes the sleep mode and starts timing, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end; thereafter, after each transmission of the gas electrical signal to the uphole monitoring end, it executes the sleep mode and starts timing, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end, thereby saving electricity. It should also be noted that after a certain period of time after each transmission of the gas electrical signal to the uphole monitoring end, the sleep mode is executed again to receive the alarm signal and gas detection data to avoid failure to receive the alarm signal.

[0038] S3, the monitoring end on the well analyzes the gas electrical signal to obtain gas analysis data.

[0039] S4, judging the underground gas status according to the gas analysis data.

[0040] S5: If the underground gas state is abnormal, an alarm signal is transmitted to the gas collection end, and the gas collection end issues an alarm.

[0041] In this embodiment, after analyzing the gas electrical signal at the uphole monitoring end to obtain the gas analysis data, the gas analysis data is transmitted to the gas collection end, and the gas collection end is displayed, so that the workers in the well and the supervisors outside the well can share the gas detection values ​​in real time, effectively improving the safety of confined space operations.

[0042] The portable split gas detection method of this embodiment is implemented based on the aforementioned portable split gas detection device, so the specific implementation method of this method can be seen in the embodiment part of the portable split gas detection device in the previous text. Therefore, its specific implementation method can refer to the description of the corresponding each part embodiment, and will not be elaborated here.

[0043] In addition, since the portable split gas detection method of this embodiment is implemented based on the aforementioned portable split gas detection device, the specific implementation method of this method can be seen in the embodiment part of the portable split gas detection device in the previous text, so its function corresponds to the function of the above-mentioned device and will not be repeated here.

[0044] The above disclosure is only a preferred embodiment of the present invention, but the present invention is not limited thereto. Any non-creative changes that can be thought of by a person skilled in the art, as well as several improvements and modifications made without departing from the principle of the present invention, should fall within the protection scope of the present invention.

Claims

1. A portable split gas detection device, It is characterized in that It includes an on-well monitoring terminal placed on the well and a gas collection terminal carried down the well; The gas collection end includes a gas collection component, a gas sensor, a gas collection controller, a downhole alarm and a downhole communication module; the uphole monitoring end includes a monitoring controller and an uphole communication module; the gas sensor, the downhole alarm and the downhole communication module are electrically connected to the gas collection controller respectively, the uphole communication module is electrically connected to the monitoring controller, and the downhole communication module communicates wirelessly with the uphole communication module; The gas collection component collects downhole gas and transmits it to the gas sensor. The gas sensor converts the gas into a gas electrical signal and transmits it to the gas collection controller. The gas collection controller transmits the gas electrical signal to the uphole communication module via the downhole communication module, and then transmits it to the monitoring controller. The monitoring controller analyzes the gas electrical signal. When the analysis shows that the downhole gas state is abnormal, the alarm signal is transmitted to the downhole communication module via the uphole communication module, and then transmitted to the gas collection controller. The gas collection controller controls the downhole alarm to sound.

2. The portable split gas detection device according to claim 1, It is characterized in that The gas collection component comprises a gas collection nozzle, a first gas conduit, a second gas conduit and a gas extraction pump; The gas collection nozzle is connected to the input end of the air pump through the first gas conduit, and the output end of the air pump is connected to the gas sensor through the second gas conduit.

3. The portable split gas detection device according to claim 2, It is characterized in that The gas collection end also includes a display screen, which is electrically connected to the gas collection controller, and the gas collection controller displays the alarm signal on the display screen; The monitoring controller is also used to transmit the gas analysis data to the downhole communication module via the uphole communication module, and then to the gas collection controller, and the gas collection controller displays the gas analysis data on the display screen.

4. The portable split gas detection device according to claim 3, It is characterized in that The gas collection end also includes a timer and a standby control circuit; the timer and the standby control circuit are electrically connected to the gas collection controller respectively; the gas collection controller executes the sleep mode through the standby control circuit and starts timing each time the gas electrical signal is transmitted to the uphole monitoring end, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end.

5. The portable split gas detection device according to any one of claims 1 to 4, It is characterized in that The gas collection end also includes a lithium battery for power supply.

6. A portable split gas detection method, It is characterized in that The following steps are involved: The well monitoring end establishes a communication connection with the gas collection end; The gas collection end converts the collected underground gas into gas electrical signals at preset intervals and transmits them to the uphole monitoring end; The monitoring end on the well analyzes the gas electrical signal to obtain gas analysis data; Determine the gas status downhole based on gas analysis data; If the underground gas state is abnormal, the alarm signal will be transmitted to the gas collection end, and the gas collection end will sound an alarm.

7. The portable split gas detection method according to claim 6, It is characterized in that The well monitoring end establishes a communication connection with the gas collection end, specifically including: The well monitoring end sends the first connection request to the gas collection end; The gas collection end responds to the first connection request and sends it to the well monitoring end via its own unique identification; The well monitoring end detects whether the unique identifier of the gas collection end has been bound according to the pre-stored binding relationship table; If bound, a second connection request is sent to the gas collection end, and the gas collection end responds to the second connection request to establish a communication connection relationship with the well monitoring end; If not bound, send a verification request with the unique identifier of the gas collection terminal to the backend; Receive verification request results from the backend; If the verification is successful, the binding relationship table is updated, and the gas collection end sends a second connection request. The gas collection end responds to the second connection request and establishes a communication connection relationship with the well monitoring end; If the verification fails, a binding exception is prompted.

8. The portable split gas detection method according to claim 6 or 7, It is characterized in that After the monitoring end on the well analyzes the gas electrical signal to obtain the gas analysis data, the following steps are also included: The gas analysis data is transmitted to the gas collection terminal, and the gas collection terminal displays it.

9. The portable split gas detection method according to claim 8, It is characterized in that The gas collection end converts the collected underground gas into gas electrical signals at preset intervals and transmits them to the uphole monitoring end, specifically including: After responding to the first second connection request, the gas collection end converts the collected downhole gas into a gas electrical signal and transmits it to the uphole monitoring end, then executes the sleep mode and starts timing, exits the sleep mode after a preset time, collects gas, and then transmits the gas electrical signal to the uphole monitoring end; After that, each time the gas electrical signal is transmitted to the well monitoring end, the sleep mode is executed and the timing is started. After the preset time, the sleep mode is exited and the gas electrical signal is transmitted to the well monitoring end after the gas is collected.

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