CN115798157A - Combustible gas leakage alarm - Google Patents
Combustible gas leakage alarm Download PDFInfo
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- CN115798157A CN115798157A CN202310082576.6A CN202310082576A CN115798157A CN 115798157 A CN115798157 A CN 115798157A CN 202310082576 A CN202310082576 A CN 202310082576A CN 115798157 A CN115798157 A CN 115798157A
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Abstract
The invention discloses a combustible gas leakage alarm which comprises a monitoring unit, a data comparison unit, a data analysis unit and an alarm unit. The invention relates to the technical field of combustible gas leakage alarm. The invention utilizes the monitoring unit to monitor the gas pressure condition in the gas pipeline in real time, compares and analyzes the gas pressure data, further utilizes the adjacent average difference to compare with the preset adjacent difference, utilizes the head-tail difference to compare with the preset head-tail difference, quickly confirms the leakage problem of the gas pipeline, and carries out detailed analysis through the gas pressure values of each monitoring point which are collected for many times, thereby avoiding the gas pressure value of each monitoring point from being influenced by impurities and generating data deviation, utilizes the data analysis unit to carry out position judgment and analysis, and then carries out specific position alarm on the monitoring point corresponding to the leakage position, so that the combustible gas leakage alarm is more accurate, specific and effective to warn, and is convenient for related personnel to carry out quick and effective maintenance processing.
Description
Technical Field
The invention relates to the technical field of combustible gas leakage alarm, in particular to a combustible gas leakage alarm.
Background
At present, along with the improvement of living standard of people, more and more people have higher requirements on safety and comfort of living space, and natural gas has gone into ordinary people's family for the heating of electric water heater or the fuel of cooking utensils in the kitchen, and the main component of natural gas is methane, and methane is a combustible gas to colorless tasteless, if reveal, will produce huge threat to people's personal safety when combustible gas reaches certain concentration in the air.
Therefore, the gas leakage alarm device is produced, but the existing alarm mainly monitors gas generated when a gas pipeline is leaked through the gas-sensitive detection element, the gas-sensitive detection element can be interfered by smoke and various miscellaneous gases to generate misoperation or be polluted by oil smoke to be out of order and have no action, the application range is narrow, even if the problem of gas leakage is detected, relevant personnel are required to gradually detect and investigate to find out the leakage point of the gas pipeline, the efficiency is low, and the personal safety can not be quickly and effectively ensured.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a combustible gas leakage alarm, which solves the problems that the existing alarm can determine gas leakage, can not quickly and effectively determine leakage points, and related personnel gradually detect, investigate and find out the leakage points, so that the efficiency is low, and the personal safety can not be quickly and effectively ensured.
In order to achieve the purpose, the invention is realized by the following technical scheme: a combustible gas leak alarm comprising: the monitoring unit is used for acquiring air pressure data, and the specific acquisition mode is as follows:
a plurality of groups of air pressure sensors are uniformly arranged on the gas pipeline;
detecting by using an air pressure sensor to obtain a plurality of real-time air pressure values, then obtaining the air pressure value once at intervals of T1 time to obtain an air pressure value group, wherein the corresponding mark is Qij, i =1, a.
The monitoring unit is used for transmitting the air pressure value set Qij to the data comparison unit, the data comparison unit is used for comparing and analyzing the air pressure value set Qij, and the specific comparison and analysis mode is as follows:
calculating the forward adjacent difference by using a formula
I =1, · n, wherein i =1 does not participate in the calculation;
meanwhile, the reverse adjacent difference is calculated by using a formula
I =1,. N, wherein i = n does not participate in the calculation;
then using the formula
Solving the adjacent average difference;
when Xpj exceeds X, a trigger signal is generated, wherein X is a preset adjacent difference;
when Xpj does not exceed X, including Xpj and X, the value of the head-to-tail difference Cj is calculated by using a formula, cj = | Q1j-Qnj |, j =1, ·., m;
when the Cj exceeds C, generating a trigger signal, wherein C is a preset head-tail difference value;
the monitoring unit acquires the air pressure value group for the second time according to the trigger signal sent by the data comparison unit, wherein the corresponding marks are Qi, j +1, i =1,. Eta.,. N, j =1,. Eta.,. M, qi, j +1 and are represented as the ith air pressure sensor, and the air pressure value is acquired at the j +1 th time;
the monitoring unit transmits the air pressure value set Qi, j +1 to the data comparison unit, and similarly, the data comparison unit performs secondary comparison analysis on the air pressure value set Qi, j +1 to further obtain Zi, j +1 and Ni, j +1 and Cj +1;
similarly, obtaining Xpj +1;
when Xpj +1 exceeds X, generating an early warning signal;
when Xpj +1 does not exceed X and Cj +1 exceeds C, generating an early warning signal;
and the alarm unit is used for carrying out early warning according to the early warning signal sent by the data comparison unit.
Preferably, the set of pressure values Qij, i =1, a. -, n, j =1, a. -, m, where Q1j represents the pressure value detected by the sensor disposed at the first position of the gas pipeline at the j-th time, and Qnj represents the pressure value detected by the sensor disposed at the last position of the gas pipeline at the j-th time.
Preferably, the method further comprises the following steps:
the data analysis unit is used for acquiring the air pressure value group Qij and Qi, j +1 according to the early warning signal and carrying out position judgment analysis, and the position judgment analysis mode is as follows:
using formulas
Calculating the discrete value L of each monitoring point on the gas pipelinei, wherein Qp is an average value obtained according to the air pressure value groups obtained twice;
generating an alarm signal when Li exceeds L1, wherein L1 is a discrete threshold for air pressure, according to the formula
Calculating to obtain;
the data analysis unit is also used for sending the alarm signal to the alarm unit, and the alarm unit is used for determining the pipeline leakage position according to the value of i and alarming at the monitoring point.
Preferably, the data analysis unit acquires Q1j and Qnj according to the early warning signal, compares the two groups of air pressure values, determines the monitoring point with the minimum air pressure value as a leakage point, generates an alarm signal, and gives an alarm to the monitoring point through the alarm unit.
The invention provides a combustible gas leakage alarm. Compared with the prior art, the method has the following beneficial effects:
the invention utilizes the monitoring unit to monitor the gas pressure condition in the gas pipeline in real time, compares and analyzes the gas pressure data, further utilizes the adjacent average difference to compare with the preset adjacent difference, utilizes the head-tail difference to compare with the preset head-tail difference, quickly confirms the leakage problem of the gas pipeline, and carries out detailed analysis through the gas pressure values of each monitoring point which are collected for many times, thereby avoiding the gas pressure value of each monitoring point from being influenced by impurities and generating data deviation, utilizes the data analysis unit to carry out position judgment and analysis, and then carries out specific position alarm on the monitoring point corresponding to the leakage position, so that the combustible gas leakage alarm is more accurate, specific and effective to warn, and is convenient for related personnel to carry out quick and effective maintenance processing.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a combustible gas leakage alarm, which is a first embodiment of the present invention and specifically includes:
the monitoring unit is used for acquiring air pressure data, and the specific acquisition mode is as follows:
a plurality of groups of air pressure sensors are uniformly arranged on the gas pipeline, wherein the uniform arrangement means that one air pressure sensor is arranged at each preset distance from the starting point;
detecting by using an air pressure sensor to obtain a plurality of real-time air pressure values, then obtaining the air pressure value once at intervals of T1 to obtain an air pressure value group, marking the air pressure value group as Qij, i =1, a.
Qij represents the air pressure value of the ith air pressure sensor at the j acquisition time;
q1j represents the air pressure value detected by a sensor arranged at the first section of the gas pipeline, and Qnj represents the air pressure value detected by a sensor arranged at the tail section of the gas pipeline;
the monitoring unit is used for transmitting the air pressure value set Qij to the data comparison unit, the data comparison unit is used for comparing and analyzing the air pressure value set Qij, and the specific comparison and analysis mode is as follows:
calculating the forward adjacent difference by using a formula
I =1, · n, wherein i =1 does not participate in the calculation;
meanwhile, the reverse adjacent difference is calculated by using a formula
I =1,. N, wherein i = n does not participate in the calculation;
reuse formula
Solving the adjacent average difference;
when Xpj exceeds X, a trigger signal is generated, wherein X is a preset adjacent difference;
the monitoring unit acquires the air pressure value group for the second time according to the trigger signal sent by the data comparison unit, wherein the corresponding marks are Qi, j +1, i =1,. Eta.,. N, j =1,. Eta.,. M, qi, j +1 and are represented as the ith air pressure sensor, and the air pressure value is acquired at the j +1 th time;
the monitoring unit transmits the air pressure value set Qi, j +1 to the data comparison unit, the data comparison unit carries out secondary comparison analysis on the air pressure value set Qi, j +1, and Zi, j +1 and Ni, j +1 are further obtained in the same comparison analysis mode as the comparison analysis mode;
similarly, xpj +1 is obtained;
when Xpj +1 exceeds X, generating an early warning signal;
the data comparison unit is used for sending the early warning signal to the alarm unit and carrying out leakage early warning;
the data comparison unit is further used for sending the early warning signal to the data analysis unit, the data analysis unit is used for acquiring the air pressure value groups Qij and Qi, j +1 and carrying out position judgment analysis, and the position judgment analysis mode is as follows:
using formulas
Calculating the discrete value Li of each monitoring point on the gas pipeline, wherein Qp is an average value obtained according to the pressure value set obtained twice;
generating an alarm signal when Li exceeds L1, wherein L1 is a discrete threshold for air pressure, according to the formula
Calculating to obtain;
the data analysis unit is also used for sending an alarm signal to the alarm unit, and the alarm unit is used for determining the pipeline leakage position and alarming at a monitoring point according to the value of i;
when Xpj does not exceed X, including Xpj and X, the value of the head-to-tail difference Cj, cj = | Q1j-Qnj |, j =1,. And m are calculated by using a formula;
when the Cj exceeds C, generating a trigger signal, wherein C is a preset head-tail difference value;
the method is characterized in that a trigger signal is sent to a monitoring unit, a pressure value set Qi, j +1 is obtained secondarily, and Cj +1 is obtained through calculation according to a head-tail difference formula;
when the Cj +1 exceeds C, generating an early warning signal and sending the early warning signal to an alarm unit for leakage early warning;
the data analysis unit acquires Q1j and Qnj according to the early warning signal, compares the two groups of air pressure values, determines the monitoring point with the minimum air pressure value as a leakage point, generates an alarm signal, and gives an alarm to the monitoring point through the alarm unit;
according to the invention, the monitoring unit is used for monitoring the gas pressure condition in the gas pipeline in real time, the gas pressure data is compared and analyzed, the adjacent average difference is further compared with the preset adjacent difference, the head-tail difference and the preset head-tail difference are compared, the leakage problem of the gas pipeline is rapidly confirmed, the data analysis unit is used for judging and analyzing the position, and then specific position alarm is carried out on the monitoring point corresponding to the leakage position, so that the combustible gas leakage alarm is more accurate, specific and effective to warn, and the quick and effective maintenance processing is convenient for related personnel.
As a second embodiment of the present invention, in a specific implementation of the present invention, compared to the first embodiment, the difference is that in the present embodiment, on the basis of the first embodiment, the monitoring unit is used to acquire the pressure value group three times, where the corresponding labels are Qi, j +2, i =1,. Farso, n, j =1,. Farso, m, qi, j +2 are denoted as an i-th pressure sensor, and the pressure value at the time of the j + 2-th acquisition is obtained;
the monitoring unit transmits the air pressure value set Qi, j +2 to the data comparison unit, the data comparison unit carries out secondary comparison analysis on the air pressure value set Qi, j +2, and Zi, j +2 and Ni, j +2 are further obtained in the same comparison analysis mode as the comparison analysis mode;
the method is similar to the embodiment, xpj +2 is obtained, xpj +2 is compared with X, whether an early warning signal is generated or not is judged, and Cj +2 is obtained through calculation according to a head-tail difference formula;
comparing the Cj +2 with the C to judge whether an early warning signal is generated or not;
through the air pressure values of the monitoring points acquired for multiple times, detailed analysis is carried out, and the air pressure values of the monitoring points are prevented from being influenced by impurities and generating data deviation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A combustible gas leakage alarm, comprising: the monitoring unit is used for acquiring air pressure data, and the specific acquisition mode is as follows:
a plurality of groups of air pressure sensors are uniformly arranged on the gas pipeline;
detecting by using an air pressure sensor to obtain a plurality of real-time air pressure values, then obtaining the air pressure values once at intervals of T1 to obtain an air pressure value group, wherein the corresponding mark is Qij, i =1, a.
The monitoring unit is used for transmitting the air pressure value set Qij to the data comparison unit, the data comparison unit is used for comparing and analyzing the air pressure value set Qij, and the specific comparison and analysis mode is as follows:
calculating the forward adjacent difference by using a formula
I =1, · n, wherein i =1 does not participate in the calculation;
meanwhile, the reverse adjacent difference is calculated by using a formula
I =1,. N, wherein i = n does not participate in the calculation;
then using the formula
Solving the adjacent average difference; when Xpj exceeds X, a trigger signal is generated, wherein X is a preset adjacent difference;
when Xpj does not exceed X, including Xpj and X, the value of the head-to-tail difference Cj is calculated by using a formula, cj = | Q1j-Qnj |, j =1, ·., m;
when the Cj exceeds C, generating a trigger signal, wherein C is a preset head-tail difference value;
the monitoring unit acquires the air pressure value group for the second time according to the trigger signal sent by the data comparison unit, wherein the corresponding marks are Qi, j +1, i =1,. Eta.,. N, j =1,. Eta.,. M, qi, j +1 and are represented as the ith air pressure sensor, and the air pressure value is acquired at the j +1 th time;
the monitoring unit transmits the air pressure value set Qi, j +1 to the data comparison unit, and similarly, the data comparison unit performs secondary comparison analysis on the air pressure value set Qi, j +1 to further obtain Zi, j +1, ni, j +1 and Cj +1;
similarly, xpj +1 is obtained;
when Xpj +1 exceeds X, generating an early warning signal; when Xpj +1 does not exceed X and Cj +1 exceeds C, generating an early warning signal;
and the alarm unit is used for carrying out early warning according to the early warning signal sent by the data comparison unit.
2. A combustible gas leak alarm according to claim 1 wherein the set of gas pressure values Qij, i =1, n, j =1, n, m, wherein Q1j represents the gas pressure value detected by the sensor disposed at the first end of the gas conduit at the j-th time and Qij represents the gas pressure value detected by the sensor disposed at the last end of the gas conduit at the j-th time.
3. A combustible gas leak alarm according to claim 1 further comprising:
the data analysis unit is used for acquiring the air pressure value group Qij and Qi, j +1 according to the early warning signal and carrying out position judgment analysis, and the position judgment analysis mode is as follows:
using a formula
Calculating the discrete value Li of each monitoring point on the gas pipeline, wherein Qp is an average value obtained according to the pressure value set obtained twice;
generating an alarm signal when Li exceeds L1, wherein L1 is a discrete threshold for air pressure, according to the formula
Calculating to obtain;
the data analysis unit is also used for sending the alarm signal to the alarm unit, and the alarm unit is used for determining the pipeline leakage position according to the value of i and alarming at the monitoring point.
4. A combustible gas leak alarm according to claim 1,
the data analysis unit obtains Q1j and Qnj according to the early warning signal, compares the two groups of air pressure values, judges the monitoring point with the minimum air pressure value as a leakage point, generates an alarm signal, and gives an alarm to the monitoring point through the alarm unit.
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