CN117706037A - Method for detecting gas in cable work well - Google Patents
Method for detecting gas in cable work well Download PDFInfo
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- CN117706037A CN117706037A CN202311693431.6A CN202311693431A CN117706037A CN 117706037 A CN117706037 A CN 117706037A CN 202311693431 A CN202311693431 A CN 202311693431A CN 117706037 A CN117706037 A CN 117706037A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 239000007789 gas Substances 0.000 claims description 56
- 238000004590 computer program Methods 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000011835 investigation Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention relates to the field of safety monitoring, in particular to a method for detecting gas in a cable work well, which comprises the following steps: s1, fixing a gas detection device at a wellhead, wherein the gas detection device comprises a box body used for fixing a negative pressure fan, and a telescopic pipe used for being lowered into a well is arranged on the box body and connected with a suction port of the negative pressure fan; sensor groups are uniformly distributed on each expansion joint of the expansion pipe; s2, acquiring temperature, humidity and gas concentration information of different depths underground at set time intervals through a sensor group; s3, calculating the underground comprehensive safety E according to the data acquired in the step S2. The invention can comprehensively judge the underground operation risk, early warning is carried out on workers in advance, and safety accidents are avoided.
Description
Technical Field
The invention relates to the field of safety monitoring, in particular to a method for detecting gas in a cable work well.
Background
With the development of urban areas, the distribution mode of the power transmission line of the overhead line is gradually replaced by underground cables. The cable is an important measure for meeting the power supply requirement of urban high load density and effectively guaranteeing the transmission capacity of the power channel, and has become the characteristic and development direction of the urban power grid in the modern society. The cable is an important component for providing more stable power resources for urban operation, and lays a foundation for urban healthy operation.
With the development of urban underground pipeline facility construction, the complexity of the environment in the cable channel is increased, and the difficulty of cable construction safety management is also increased. The cable working well is the most common construction environment in cable construction, the closed humid environment of the cable working well is complex, and the personnel safety and construction quality control of operators are threatened greatly. Because the depth is deeper in the pit, harmful gas can be possibly generated in different operation depths, and the areas with different depths in the pit are difficult to rapidly check, so that the specific areas of the harmful gas are determined, and the early warning can not be carried out on operators, so that the problem is to be solved.
Disclosure of Invention
In order to avoid and overcome the technical problems in the prior art, the invention provides a method for detecting gas in a cable work well. The invention can comprehensively judge the underground operation risk, early warning is carried out on workers in advance, and safety accidents are avoided.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for detecting gas in a cable work well comprises the following steps:
s1, fixing a gas detection device at a wellhead, wherein the gas detection device comprises a box body used for fixing a negative pressure fan, and a telescopic pipe used for being lowered into a well is arranged on the box body and connected with a suction port of the negative pressure fan; sensor groups are uniformly distributed on each expansion joint of the expansion pipe;
s2, acquiring temperature, humidity and gas concentration information of different depths underground at set time intervals through a sensor group;
s3, calculating the underground comprehensive safety E according to the data acquired in the step S2:
wherein i represents the ith detection point in the well;
n represents the total amount of downhole detection points;
E i representing the safety degree of the ith detection point in the well;
f i an influence weight coefficient representing the ith detection point in the well;
s4, the negative pressure fan intermittently ventilates the underground in a safety period, so that the underground humidity and the underground temperature are ensured to always reach the set working conditions.
As a further scheme of the invention: in the step S3, when E is more than or equal to 75 and less than or equal to 100, the underground safety condition is indicated, and normal operation can be performed;
when E is more than or equal to 60 and less than 75, indicating that potential risks exist underground, and lighting a warning lamp of the gas detection device to prompt underground safety investigation operation, increasing ventilation quantity underground and improving subsequent detection frequency;
when 30.ltoreq.E < 60, or E i When the fluctuation rate exceeds 20% in one minute, the buzzer of the gas detection device alarms to prompt immediate stopping of the underground operation and comprehensive investigation of the underground is performed;
when E < 30, or E i When the fluctuation rate exceeds 40% in one minute, the alarm lamp is turned on and the buzzer alarms to evacuate people under the well and nearby the wellhead.
As still further aspects of the invention: in the step S3 of the process,
wherein T is i Representing the temperature of the ith detection point downhole;
an influence factor indicating temperature;
P i indicating the concentration of the positive-influence gas at the ith detection point in the well;
C i indicating the concentration of the negatively affected gas at the ith detection point downhole;
representing a gas concentration influencing factor; />
And B represents the influence coefficient of the comprehensive factors in the well.
As still further aspects of the invention:
wherein S is i Representing the humidity at the ith detection point downhole;
S 0 indicating the humidity outside the well;
e represents the Euler number;
fc represents average humidity in the well;
λ c indicating the influence of humidityAnd (5) a seed.
As still further aspects of the invention: the positive influencing gases include oxygen and carbon dioxide and the negative influencing gases include methane, carbon monoxide and hydrogen sulfide gases.
As still further aspects of the invention: the sensor group comprises a temperature sensor, a humidity sensor, an oxygen concentration sensor, a carbon dioxide concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor, a hydrogen sulfide concentration sensor and a height sensor, and the sensors are uniformly distributed along the circumferential direction of the corresponding expansion joint.
As still further aspects of the invention: the box is arranged outside the well body, and the buzzer and the warning lamp are installed on the box and used alternatively or synchronously according to the change of the underground environment.
An electronic device comprising a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory being connected in sequence, the memory being for storing a computer program, the computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of gas detection in a cable work well.
A readable storage medium storing a computer program comprising program instructions which, when executed by a processor, cause the processor to perform the method of gas detection in a wireline tool.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the temperature, the humidity and the gas concentration information at different depths in the well are detected in real time through the gas detection device, the comprehensive safety in the well and the safety at detection points at different depths are calculated through introducing the safety index, and the underground operation risk is comprehensively judged, so that early warning is carried out on workers, and safety accidents are avoided.
2. According to the invention, the temperature influence factor and the humidity influence factor are introduced, so that the influence of environmental factors on gas concentration monitoring is eliminated, and the calculation accuracy of the safety index is higher; the deeper the underground depth is, the higher the danger degree generated after the gas concentration is increased, and the influence weight coefficient of the detection point is introduced, so that the influence of the difference of the underground depth on the calculation of the safety index is eliminated.
3. The sensor group detects temperature, humidity and gas concentration parameters at different depths in real time, and sends out a prompt signal to the outside through the buzzer and the warning lamp after the safety index is obtained through rapid calculation, and the underground is rapidly ventilated through the negative pressure fan, so that the safety of underground operation is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure:
1. a case; 11. a buzzer; 12. a warning light;
2. a telescopic tube; 21. an expansion joint; 22. a sensor group.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, in an embodiment of the present invention, a method for detecting gas in a cable work well includes the following steps:
s1, fixing a gas detection device at a wellhead, wherein the gas detection device comprises a box body 1 for fixing a negative pressure fan, a telescopic pipe 2 for being lowered into a well is arranged on the box body 1, and the telescopic pipe 2 is connected with a suction port of the negative pressure fan; sensor groups 22 are uniformly distributed on each telescopic joint 21 of the telescopic pipe 2;
the gas detection device comprises a box body 1 for fixing the negative pressure fan, and the box body 1 can be connected and fixed with a wellhead through a lock catch.
A telescopic pipe 2 used for being lowered into the well is arranged on the box body 1, and the telescopic pipe 2 is connected with a suction port of the negative pressure fan; sensor groups 22 are distributed on each telescopic joint 21 of the telescopic pipe 2 to acquire temperature, humidity and gas concentration information at different depths in the pit. The sensor group 22 comprises a temperature sensor, a humidity sensor, an oxygen concentration sensor, a carbon dioxide concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor and a hydrogen sulfide concentration sensor, and the sensors are uniformly distributed along the circumferential direction of the corresponding telescopic joint 21.
The box body 1 is provided with a buzzer 11 and a warning lamp 12, and the buzzer 11 and the warning lamp 12 are used alternatively or synchronously under different underground comprehensive safety degrees E according to the change of underground environments.
The box body 1 is internally provided with a data transmission module, each sensor group 22 is connected with the data transmission module, and the underground comprehensive safety E is calculated through the data transmission module.
When E is more than or equal to 75 and less than or equal to 100, the underground safety condition is indicated, and normal operation can be performed;
when E is more than or equal to 60 and less than 75, indicating that potential risks exist underground, lighting the warning lamp 12 to prompt the underground safety investigation operation, increasing the ventilation quantity underground and improving the subsequent detection frequency;
when 30.ltoreq.E < 60, or E i When the fluctuation rate exceeds 20% in one minute, the buzzer 11 gives an alarm to prompt the immediate stopping of the underground operation and the comprehensive investigation of the underground is carried out;
when E < 30, or E i When the fluctuation rate exceeds 40% in one minute, the alarm lamp 12 lights up and the buzzer 11 gives an alarm to evacuate people under the well and nearby the wellhead.
S2, acquiring temperature, humidity and gas concentration information of different depths underground at set time intervals through a sensor group 22; the time interval is typically set to one minute.
S3, calculating the underground comprehensive safety E according to the data acquired in the step S2:
wherein i represents the ith detection point in the well;
n represents the total amount of downhole detection points;
E i representing the safety degree of the ith detection point in the well;
f i an influence weight coefficient representing the ith detection point in the well, f i An arithmetic progression with increasing downhole depth, f 1 +f 2 +……+f i +……+f N ＝1。
Wherein T is i Representing the temperature of the ith detection point downhole;
an influence factor indicating temperature;
P i indicating the concentration of the positive-influence gas at the ith detection point in the well;
C i indicating the concentration of the negatively affected gas at the ith detection point downhole;
representing a gas concentration influencing factor; />
B represents the influence coefficient of the comprehensive factors in the pit;
wherein S is i Representing the humidity at the ith detection point downhole;
S 0 indicating the humidity outside the well;
e represents the Euler number;
fc represents average humidity in the well;
λ c representing the humidity influence factor.
S4, the negative pressure fan intermittently ventilates the underground in a safety period, so that the underground humidity and the underground temperature are ensured to always reach the set working conditions.
Another embodiment of the present application is an electronic device.
The electronic device may be the mobile device itself, or a stand-alone device independent thereof, which may communicate with the mobile device to receive the acquired input signals from them and to send the selected target decision-making actions thereto.
The electronic device includes one or more processors and memory.
The processor may be a Central Processing Unit (CPU) or other form of processing unit having data processing and/or instruction execution capabilities, and may control other components in the electronic device to perform the desired functions.
The memory may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, random Access Memory (RAM) and/or cache memory (cache), and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like. One or more computer program instructions may be stored on the computer readable storage medium that can be executed by a processor to implement the gas detection methods of the various embodiments of the present application described above.
In one example, the electronic device may further include: input devices and output devices, which are interconnected by a bus system and/or other forms of connection mechanisms. For example, the input device may include various devices such as an on-board diagnostic system (OBD), a video camera, an industrial camera, and the like. The input device may also include, for example, a keyboard, mouse, etc. The output means may include, for example, a display, speakers, a printer, and a communication network and remote output devices connected thereto, etc.
In addition, the electronic device may include any other suitable components depending on the particular application.
Yet another embodiment of the present application is a computer program product, which comprises computer program instructions, which when being executed by a processor, cause the processor to perform the gas detection steps according to the various embodiments of the present application described in the above gas detection method section of the present specification.
The computer program product may write program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server.
Furthermore, embodiments of the present application may also be a computer-readable storage medium, on which computer program instructions are stored, which, when being executed by a processor, cause the processor to perform the gas detection method in the present specification.
The computer readable storage medium may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not limiting, and these advantages, benefits, effects, etc. are not to be considered as necessarily possessed by the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not intended to be limited to the details disclosed herein as such.
The block diagrams of the devices, apparatuses, devices, systems referred to in this application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
Claims (9)
1. The method for detecting the gas in the cable work well is characterized by comprising the following steps of:
s1, fixing a gas detection device at a wellhead, wherein the gas detection device comprises a box body (1) for fixing a negative pressure fan, a telescopic pipe (2) for being lowered into a well is arranged on the box body (1), and the telescopic pipe (2) is connected with a suction port of the negative pressure fan; sensor groups (22) are distributed on each expansion joint (21) of the expansion pipe (2);
s2, acquiring temperature, humidity and gas concentration information of different depths underground at set time intervals through a sensor group (22);
s3, calculating the underground comprehensive safety E according to the data acquired in the step S2:
wherein i represents the ith detection point in the well;
n represents the total amount of downhole detection points;
E i representing the safety degree of the ith detection point in the well;
f i an influence weight coefficient representing the ith detection point in the well;
s4, the negative pressure fan intermittently ventilates the underground in a safety period, so that the underground humidity and the underground temperature are ensured to always reach the set working conditions.
2. The method for detecting gas in a cable work well according to claim 1, wherein in the step S3, when E is more than or equal to 75 and less than or equal to 100, the condition of safety in the well is indicated, and normal operation can be performed;
when E is more than or equal to 60 and less than 75, indicating that potential risks exist underground, and lighting a warning lamp (12) of the gas detection device to prompt underground safety investigation operation, increasing ventilation quantity underground and improving subsequent detection frequency;
when 30.ltoreq.E < 60, or E i When the fluctuation rate exceeds 20% in one minute, the buzzer (11) of the gas detection device alarms to prompt immediate stopping of the underground operation and complete investigation of the underground;
when E < 30, or E i When the fluctuation rate exceeds 40% in one minute, the alarm lamp (12) is turned on and the buzzer (11) gives an alarm to evacuate people under the well and nearby the wellhead.
3. A method for detecting gas in a cable work well according to claim 1, wherein, in step S3,
wherein T is i Representing the temperature of the ith detection point downhole;
an influence factor indicating temperature;
P i indicating the concentration of the positive-influence gas at the ith detection point in the well;
C i indicating the concentration of the negatively affected gas at the ith detection point downhole;
representing a gas concentration influencing factor; />
And B represents the influence coefficient of the comprehensive factors in the well.
4. A method for detecting gas in a cable work well according to claim 2, wherein,
wherein S is i Representing the humidity at the ith detection point downhole;
S 0 indicating the humidity outside the well;
e represents the Euler number;
fc represents average humidity in the well;
λ c representing the humidity influence factor.
5. A method of gas detection in a cable work well according to claim 3 or 4, wherein the positive influencing gas comprises oxygen and carbon dioxide and the negative influencing gas comprises methane, carbon monoxide and hydrogen sulphide.
6. A method for detecting gas in a cable work well according to any one of claims 1-3, wherein the sensor group (22) comprises a temperature sensor, a humidity sensor, an oxygen concentration sensor, a carbon dioxide concentration sensor, a methane concentration sensor, a carbon monoxide concentration sensor, a hydrogen sulfide concentration sensor and a height sensor, and the sensors are uniformly distributed along the circumferential direction of the corresponding telescopic joint (21).
7. A method for detecting gas in a cable work well according to any one of claims 1-3, characterized in that the box (1) is arranged outside the well body, a buzzer (11) and a warning lamp (12) are mounted on the box (1), and the buzzer (11) and the warning lamp (12) are used alternatively or synchronously for the change of the underground environment.
8. An electronic device comprising a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory being connected in sequence, the memory being for storing a computer program, the computer program comprising program instructions, the processor being configured to invoke the program instructions to perform a method of gas detection in a cable work well as claimed in any one of claims 1 to 3.
9. A readable storage medium, characterized in that the storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to perform a method of gas detection in a cable work well as claimed in any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311693431.6A CN117706037A (en) | 2023-12-07 | 2023-12-07 | Method for detecting gas in cable work well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311693431.6A CN117706037A (en) | 2023-12-07 | 2023-12-07 | Method for detecting gas in cable work well |
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| Publication Number | Publication Date |
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| CN117706037A true CN117706037A (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311693431.6A Pending CN117706037A (en) | 2023-12-07 | 2023-12-07 | Method for detecting gas in cable work well |
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| Country | Link |
|---|---|
| CN (1) | CN117706037A (en) |
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2023
- 2023-12-07 CN CN202311693431.6A patent/CN117706037A/en active Pending
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