WO2016026171A1 - Gas energy metering method - Google Patents
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- WO2016026171A1 WO2016026171A1 PCT/CN2014/085915 CN2014085915W WO2016026171A1 WO 2016026171 A1 WO2016026171 A1 WO 2016026171A1 CN 2014085915 W CN2014085915 W CN 2014085915W WO 2016026171 A1 WO2016026171 A1 WO 2016026171A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- the invention belongs to the field of energy measurement of gas transmission and distribution system, and particularly relates to a method for remotely assigning gas heat, local sampling flow, temperature and pressure parameters, and completing volumetric flow measurement and gas energy measurement under reference conditions.
- Gas metering has two methods: volume measurement (mass measurement and the same) and energy measurement. Volumetric metering achieves an accumulation of the volume of gas consumed, rather than the efficiency of gas as a fuel and energy source.
- the gas energy metering calculates the calorific value of the "hydrocarbon" substance with a heating value, which is in the interest of both parties.
- the existing gas sources are wide and the components are different. In addition to domestic gas, imported pipeline gas and LNG, there are also a large amount of unconventional gas such as coalbed methane, coal gas, coke oven gas and shale gas entering the pipe network. Sales, gas from different sources have large differences in calorific value.
- the commercial value of gas is the calorific value it contains, that is, the essence of gas sales is the energy of gas, not the volume. Therefore, the amount of gas energy flow metering is obviously more scientific than volumetric flow metering (or mass metering), and it is more representative of fair trade.
- the energy measurement requirements are generally measured in the form of a flow computer, and are applied in a metrology field station.
- the volume flow rate under the working conditions is measured by the flow meter such as the waist wheel, the turbine, the vortex street, etc., and the volumetric flow rate under the reference condition is obtained by the volume correction of the matching volume correcting instrument, so the flowmeter And the flow metering network does not have energy metering function.
- the invention provides a gas energy metering method, which comprises the following steps,
- the energy metering volume correcting device performs real-time sampling on the pressure, temperature and working condition flow of the gas at the measuring point, and receives the gas calorific value and the gas component of the gas metering area issued by the energy metering center through the wireless communication network. parameter;
- the energy metering center receives the gas component information and the gas calorific value information of the gas chromatograph analyzer and the calorimeter, calculates the heat per unit volume of the gas in the gas metering area at the corresponding energy metering point, and then passes the wireless communication network
- the unit volume heat generation and gas component parameters of the region are sent to the energy metering volume corrector at the corresponding metering point, and the energy metering volume corrector is used to calculate the energy value;
- the energy metering volume correcting instrument adopts a certain sampling period to collect the volume flow, temperature and pressure under working conditions. For example, the flow rate under the reference condition and the reference condition volume increment of the metering period are obtained by data calculation, and the energy flow and energy of the gas of the metering period are calculated according to the received unit volume heat value and the gas component parameter of the region. Incremental, by accumulating the total amount of reference condition volume and the total amount of energy, the results of volumetric metering and energy metering are displayed in situ in the display window of the energy metering volume corrector, and transmitted to the energy metering center through the wireless communication network.
- the gas energy metering method is based on component information and calorific value information of the gas, gas pipe network configuration, gas flow field, gas of different sources.
- the mathematical model of the ratio and calorific value calculates the calorific value of the gas in the corresponding region, and sends it to all the energy metering volume correctors in the corresponding region through the wireless communication network.
- the energy metering center in step (2) comprises a temperament communication module for receiving temperament information of the chromatograph or the calorimeter; and for performing temperament information Analyzed gas component, calorific value analysis module; calorific value calculation module for gas heat calculation processing; volume amount and energy communication module for communication with energy volume corrector; remote data reception and transmission module; communication protocol analysis module Gas volume, energy storage module; gas volume, energy query module.
- a gas energy metering method according to claim 1, wherein the energy metering volume correcting device in step (3) is formulated according to the formula
- E the total amount of energy of the gas
- F(t) volumetric flow rate of gas at time t under working conditions
- Hs the calorific value of the gas unit under the reference condition within a certain period of time or time t;
- P is the gas pressure
- T is the gas temperature
- Z is the gas compression factor
- the invention has the beneficial effects that the gas energy metering method of the invention adopts a method of remotely assigning gas heat, locally sampling flow rate, temperature and pressure parameters, and completing the volume flow metering and gas energy metering under the reference condition. Passing through The measurement or direct measurement is performed to obtain the component information or the calorific value information of the gas, thereby calculating the calorific value of the gas unit in the corresponding region, and releasing the energy metering volume correcting device to the corresponding region through the wireless communication network.
- This method enables the gas pipeline network to be equipped with end users and metering stations.
- the gas used has both volumetric and energy metering methods.
- the remotely assigned gas calorific value can be transmitted over long distances, which is convenient to implement, and is conducive to promoting a new way of energy metering, and is also conducive to meeting the requirements of informationization and networking of gas energy metering.
- Figure 1 is a schematic diagram of the metering method of the present invention.
- FIG. 2 is a flow chart of a metering method of the present invention.
- FIG. 3 is a schematic block diagram of an energy metering volume correcting instrument used in the present invention.
- Figure 4 is a schematic block diagram of the metering assembly employed in the energy metering volume modifier.
- the gas energy metering method of the invention realizes the energy metering of the gas on the end user and the metering station of the gas pipeline network.
- the volume correcting instrument with energy metering function, communication network, energy metering center, gas component and calorific value measuring instrument are constructed into an energy metering system, which is applied in gas pipeline network transmission and distribution, and is a gas metering method from volumetric metering.
- the premise of energy metering Since the commercial value of fuel gas is the calorific value contained in it, that is, the essence of gas sales is the energy of gas, not the volume. Therefore, the energy flow measurement of gas is obviously more scientific than the volumetric flow meter (or mass measurement), and it can reflect fair trade.
- the energy metering volume correcting instrument comprises a casing, a microprocessor-based metering component, a temperature sensor, a pressure sensor, a calorific value signal receiving processor, and a wireless communication module.
- the metering component includes a flow, temperature, pressure signal interface circuit, an input and output interface circuit, a microprocessor, a button, a display screen, and the like.
- the metering component is located in the outer casing, and the metering component is connected to the flow sensor (flow metering base meter), the pressure sensor, the temperature sensor, and the calorific value signal receiving processor.
- the metering component is configured to receive the pulse signal of the flow meter base table and calculate the volume flow rate under the working condition, calculate the volume flow rate under the reference condition according to the real-time pressure and temperature of the gas detected by the pressure and the temperature sensor, and accumulate the total volume under the reference condition.
- the quantity and then receives the heat value data transmitted by the processor according to the calorific value signal, calculates the energy flow rate and energy of the gas, and displays the volume metering and energy metering values in the display window.
- the calorific value signal receiving processor is connected with a wireless communication module for receiving component parameters and calorific value data of the gas, thereby calculating a calorific value per unit volume and transmitting the calorific value to the metering component.
- the antenna is connected to the wireless communication module and mounted on the housing.
- the schematic diagram of the realization of the present invention is shown in Fig. 1.
- the gas component or the calorific value is measured by a gas chromatograph or a calorimeter at the gas gas sampling point, and the gas component or calorific value information is sent to the energy metering center, and the energy metering center.
- the calorific value of the gas unit in the corresponding area is calculated and released; in the gas pipe network transmission and distribution measuring point A flow meter equipped with an energy metering volume corrector is installed, and the heat value or component data of the released area is remotely received by wireless communication, and the locally sampled flow rate, temperature, and pressure data are used to calculate the volume under the reference condition and The energy is incremented and accumulated to obtain the total volume and the total amount of energy, and the data such as energy and volume flow is transmitted to the central server through the wireless communication network at regular intervals.
- the gas energy metering adopts the method of remotely assigning gas heat, local sampling flow, temperature and pressure parameters, and completing the volume flow metering and gas energy metering under the reference conditions.
- the implementation method is composed of the following parts:
- the energy metering volume correcting instrument installed at the energy metering point samples the real-time pressure of the gas at the metering point, the real-time temperature, and the volume flow rate under working conditions.
- the energy metering volume corrector obtains the flow rate information from the flow meter and obtains the gas temperature and pressure value from the matched pressure and temperature sensors, and obtains the gas heat value or component data of the area by wireless communication.
- the energy metering center receives the gas component information and the gas calorific value information of the gas chromatograph analyzer and the calorimeter, calculates the heat per unit volume of the gas in the gas metering area at the corresponding energy metering point, and then passes the wireless communication network
- the unit volume heat generation and gas component parameters of the region are sent to the energy metering volume corrector at the corresponding metering point, and the energy metering volume corrector is used to calculate the energy value.
- the energy metering center includes a temperament communication module for receiving temperament information of the chromatograph or the calorimeter; a gas component for analyzing the temperament information, a calorific value analysis module; and a gas heat calculation process.
- Calorific value calculation module volume amount, energy communication module for communicating with energy volume corrector; remote data receiving and transmitting module; communication protocol analysis module; gas volume, energy storage module; gas volume, energy query module.
- the gas volume, energy storage module stores the received gas volume and energy data in a database.
- the gas energy value includes the gas energy flow rate and the total amount of energy
- the gas volume amount includes the volume flow rate and the total volume under the reference condition.
- the data stored in the database includes the current and historical gas energy value and volume value of the metering point, the gas pressure value and the gas temperature value.
- the gas volume and energy query module can perform historical and real-time gas volume and energy, gas pressure value and gas temperature value data query.
- Energy metering centers can choose different deployment methods depending on the size of the system or project. If there are many measurement points, considering the big data processing and concurrency capabilities, you need to deploy a computing center with cloud computing technology as the architecture; if the scale is small, you can use ordinary servers.
- the wireless communication network can adopt 2G/3G/4G or GSM short message communication network, and short-range radio frequency wireless network can also be used in a short time.
- the energy metering volume correcting instrument samples the volume flow rate, temperature and pressure under working conditions according to a certain sampling period, and obtains the flow rate under the reference condition and the reference condition volume increment of the metering period by data calculation, and according to the received Calculate the energy flow rate and energy increment of the gas in the metering cycle by calculating the calorific value and gas component parameters per unit volume in the region.
- the display window of the energy metering volume correction device is in situ. The results of volumetric metering and energy metering are displayed and transmitted remotely to the energy metering center via a wireless communication network.
- the energy metering center in step (2) calculates the calorific value of the gas in the corresponding region according to the component information and calorific value information of the gas, the gas pipe network configuration, the gas flow field, the gas ratio of different sources, and the calorific value mathematical model.
- the wireless communication network transmits to all energy metering volume correctors in the corresponding area.
- the volume increment and energy increment under the reference condition are calculated, the total volume and the total amount of energy are accumulated, and the obtained data is transmitted to the energy metering center through the wireless communication network.
- F(t) volumetric flow rate of gas at time t under working conditions
- Hs the calorific value of the gas unit under the reference condition within a certain period of time or time t;
- P is the gas pressure
- T is the gas temperature
- Z is the gas compression factor
- the energy metering volume corrector calculates the results, such as calculated and measured volume flow and energy values, temperature, pressure and other data, transmitted to the energy metering center through the wireless communication network.
- the energy metering volume correcting device can be powered by battery for timing or fixed interval wireless communication, or can be operated by real-time online power supply by dedicated safety power supply. It can meet the requirements of receiving calorific value information, gas energy and volume flow metering, and wirelessly uploading flow data in various occasions. need.
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Abstract
A gas energy metering method, comprising the following steps: (1) acquiring, by an energy metering volume corrector, a pressure parameter, a temperature parameter, a working condition flow parameter, a gas calorific value parameter and a gas component parameter; (2) calculating, by an energy metering centre, gas heat per unit volume, and then sending same to the energy metering volume corrector so as to complete the calculation of an energy value; and (3) calculating, by the energy metering volume corrector, an energy flow and an energy increment of gas in the metering period, acquiring a total volume quantity and a total energy quantity under reference conditions by means of accumulation, locally displaying a volume metering result and an energy metering result on a display window of the energy metering volume corrector, uploading the results to the energy metering centre by means of a wireless communication network, remotely assigning the gas heat, and locally sampling the flow, temperature and pressure parameters to complete volume flow metering and gas energy metering under the reference conditions.
Description
本发明属于燃气输配系统能量计量领域，具体涉及一种远传赋值燃气热量，本地采样流量、温度、压力参数，完成基准条件下的体积流量计量和燃气能量计量的方法。The invention belongs to the field of energy measurement of gas transmission and distribution system, and particularly relates to a method for remotely assigning gas heat, local sampling flow, temperature and pressure parameters, and completing volumetric flow measurement and gas energy measurement under reference conditions.
燃气计量有体积计量(质量计量与此类同)和能量计量两种方式。体积计量实现了对消耗的燃气体积的积算，而不能体现燃气作为燃料和能源的效率价值。燃气能量计量，积算的是有发热价值的“烃类”物质的发热量，符合交易双方的利益。现有燃气来源广、组分差异大，除国产气，进口管道气、LNG，同时还有或将有煤层气、煤制气、焦炉煤气、页岩气等大量非常规燃气进入管网进行销售，不同来源的燃气存在较大的热值差异。燃气的商品价值是其所含的发热量，即燃气销售使用的实质是燃气的能量，而不是体积。因此，燃气能量流量计量显然比体积流量计量(或质量计量)更科学，更能体现公平贸易。Gas metering has two methods: volume measurement (mass measurement and the same) and energy measurement. Volumetric metering achieves an accumulation of the volume of gas consumed, rather than the efficiency of gas as a fuel and energy source. The gas energy metering calculates the calorific value of the "hydrocarbon" substance with a heating value, which is in the interest of both parties. The existing gas sources are wide and the components are different. In addition to domestic gas, imported pipeline gas and LNG, there are also a large amount of unconventional gas such as coalbed methane, coal gas, coke oven gas and shale gas entering the pipe network. Sales, gas from different sources have large differences in calorific value. The commercial value of gas is the calorific value it contains, that is, the essence of gas sales is the energy of gas, not the volume. Therefore, the amount of gas energy flow metering is obviously more scientific than volumetric flow metering (or mass metering), and it is more representative of fair trade.
现有的燃气输配管网中，有能量计量要求的一般采用流量计算机的形式计量，在计量场站中应用。而在燃气管网的终端用户中，均使用腰轮、涡轮、涡街等流量计计量工作条件下的体积流量，通过相配套的体积修正仪进行体积修正得到基准条件下体积流量，因此流量计以及流量计量网络均不具备能量计量功能。In the existing gas transmission and distribution pipeline network, the energy measurement requirements are generally measured in the form of a flow computer, and are applied in a metrology field station. In the end users of the gas pipeline network, the volume flow rate under the working conditions is measured by the flow meter such as the waist wheel, the turbine, the vortex street, etc., and the volumetric flow rate under the reference condition is obtained by the volume correction of the matching volume correcting instrument, so the flowmeter And the flow metering network does not have energy metering function.
因此有必要提供一种既有体积计量又有能量计量，且就地计量显示和远传，可方便实施的燃气计量的方法。Therefore, it is necessary to provide a method for gas metering that has both volumetric and energy metering, and on-site metering display and remote transmission, which can be conveniently implemented.
发明内容Summary of the invention
本发明的目的提供一种燃气能量计量的方法，以解决现有燃气输配管网中终端用户和计量站点的能量计量问题。It is an object of the present invention to provide a method of gas energy metering to solve the energy metering problem of end users and metering stations in existing gas transmission and distribution pipeline networks.
本发明提供：一种燃气能量计量方法，其包括以下步骤，The invention provides a gas energy metering method, which comprises the following steps,
(一)能量计量体积修正仪对计量点处的燃气的压力、温度、工况流量进行实时采样，并通过无线通信网络接收能量计量中心发布的本燃气计量区域的燃气发热量值和燃气组分参数；(1) The energy metering volume correcting device performs real-time sampling on the pressure, temperature and working condition flow of the gas at the measuring point, and receives the gas calorific value and the gas component of the gas metering area issued by the energy metering center through the wireless communication network. parameter;
(二)能量计量中心接收气相色谱分析仪和热值仪的燃气组分信息和燃气热值信息，计算出相对应能量计量点处的燃气计量区域的燃气单位体积热量，然后通过无线通信网络把该区域的单位体积发热量和燃气组分参数发送到相应计量点处的能量计量体积修正仪,由能量计量体积修正仪完成能量值的计算；(2) The energy metering center receives the gas component information and the gas calorific value information of the gas chromatograph analyzer and the calorimeter, calculates the heat per unit volume of the gas in the gas metering area at the corresponding energy metering point, and then passes the wireless communication network The unit volume heat generation and gas component parameters of the region are sent to the energy metering volume corrector at the corresponding metering point, and the energy metering volume corrector is used to calculate the energy value;
(三)能量计量体积修正仪按一定的采样周期对工作条件下体积流量、温度、压力进行采
样，通过数据计算得到基准条件下流量和该计量周期的基准条件体积增量，同时根据接收到的本区域单位体积热值和燃气组分参数，计算出该计量周期的燃气的能量流量和能量增量，通过累积得到基准条件体积总量和能量总量，在能量计量体积修正仪显示窗口就地显示体积计量和能量计量的结果，并通过无线通信网络远传到能量计量中心。(3) The energy metering volume correcting instrument adopts a certain sampling period to collect the volume flow, temperature and pressure under working conditions.
For example, the flow rate under the reference condition and the reference condition volume increment of the metering period are obtained by data calculation, and the energy flow and energy of the gas of the metering period are calculated according to the received unit volume heat value and the gas component parameter of the region. Incremental, by accumulating the total amount of reference condition volume and the total amount of energy, the results of volumetric metering and energy metering are displayed in situ in the display window of the energy metering volume corrector, and transmitted to the energy metering center through the wireless communication network.
根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(二)中的能量计量中心根据燃气的组分信息和热值信息、燃气管网配置、气体流场、不同来源燃气配比、热值数学模型计算出对应区域的燃气发热量值，通过无线通信网络发送给相应区域内的所有能量计量体积修正仪。The gas energy metering method according to claim 1, wherein the energy metering center in step (2) is based on component information and calorific value information of the gas, gas pipe network configuration, gas flow field, gas of different sources. The mathematical model of the ratio and calorific value calculates the calorific value of the gas in the corresponding region, and sends it to all the energy metering volume correctors in the corresponding region through the wireless communication network.
根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(二)中的能量计量中心包括用于接收色谱仪或热值仪气质信息的气质通信模块；用于对气质信息进行解析的燃气组分、热值分析模块；用于燃气热量运算处理的热量值运算模块；用于和能量体积修正仪通信的体积量、能量通信模块；远传数据接收发送模块；通信规约解析模块；燃气体积量、能量存储模块；燃气体积量、能量查询模块。The gas energy metering method according to claim 1, wherein the energy metering center in step (2) comprises a temperament communication module for receiving temperament information of the chromatograph or the calorimeter; and for performing temperament information Analyzed gas component, calorific value analysis module; calorific value calculation module for gas heat calculation processing; volume amount and energy communication module for communication with energy volume corrector; remote data reception and transmission module; communication protocol analysis module Gas volume, energy storage module; gas volume, energy query module.
根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(三)中的能量计量体积修正仪按公式A gas energy metering method according to claim 1, wherein the energy metering volume correcting device in step (3) is formulated according to the formula
计算出基准条件下的体积增量和能量增量，累积得到体积总量和能量总量，将得到的数据，通过无线通信网络传送到能量计量中心；Calculate the volume increment and energy increment under the reference condition, accumulate the total volume and the total amount of energy, and transfer the obtained data to the energy metering center through the wireless communication network;
式中：E：燃气的能量总量；Where: E: the total amount of energy of the gas;
F(t)：燃气在工作条件下t时刻的体积流量；F(t): volumetric flow rate of gas at time t under working conditions;
Hs：某段时间内或t时刻基准条件下燃气单位发热量；Hs: the calorific value of the gas unit under the reference condition within a certain period of time or time t;
P：为燃气压力；P: is the gas pressure;
T：为燃气温度；T: is the gas temperature;
Z：为燃气压缩因子；Z: is the gas compression factor;
下标“b”代表基准状态，(t)表示在t时刻。The subscript "b" represents the reference state, and (t) represents the time t.
本发明的有益效果是：本发明燃气能量计量的方法采用远传赋值燃气热量，本地采样流量、温度、压力参数，完成基准条件下的体积流量计量和燃气能量计量的方法。通过间
接测定或直接测定，获得燃气的组分信息或热值信息，从而计算出相应区域的燃气单位发热量，通过无线通信网络发布到相应区域的能量计量体积修正仪。这种方法能使燃气管网输配终端用户和计量站点，使用的燃气既有体积计量方式、又有能量计量方式。远方赋值燃气热量值可长距离传送，实施方便，有利于推广能量计量的新方式，也有利于满足燃气能量计量的信息化、网络化的要求。The invention has the beneficial effects that the gas energy metering method of the invention adopts a method of remotely assigning gas heat, locally sampling flow rate, temperature and pressure parameters, and completing the volume flow metering and gas energy metering under the reference condition. Passing through
The measurement or direct measurement is performed to obtain the component information or the calorific value information of the gas, thereby calculating the calorific value of the gas unit in the corresponding region, and releasing the energy metering volume correcting device to the corresponding region through the wireless communication network. This method enables the gas pipeline network to be equipped with end users and metering stations. The gas used has both volumetric and energy metering methods. The remotely assigned gas calorific value can be transmitted over long distances, which is convenient to implement, and is conducive to promoting a new way of energy metering, and is also conducive to meeting the requirements of informationization and networking of gas energy metering.
图1为本发明计量方法的原理图。Figure 1 is a schematic diagram of the metering method of the present invention.
图2为本发明计量方法的流程图。2 is a flow chart of a metering method of the present invention.
图3为本发明中采用的能量计量体积修正仪的原理框图。3 is a schematic block diagram of an energy metering volume correcting instrument used in the present invention.
图4是能量计量体积修正仪中采用的计量组件的原理框图。Figure 4 is a schematic block diagram of the metering assembly employed in the energy metering volume modifier.
下面结合附图对本发明实施例作进一步说明：The embodiments of the present invention are further described below in conjunction with the accompanying drawings:
本发明燃气能量计量的方法在燃气管网输配终端用户和计量站点上实现了对燃气的能量计量。The gas energy metering method of the invention realizes the energy metering of the gas on the end user and the metering station of the gas pipeline network.
将具备能量计量功能的体积修正仪，通信网络，能量计量中心，燃气组分、热值测定仪，构建成能量计量系统，在燃气管网输配中得到应用，是燃气计量方式从体积计量向能量计量跨越的前提。由于作为燃料燃气的商品价值是其所含的发热量，即燃气销售使用的实质是燃气的能量，而不是体积。因此，燃气的能量流量计量显然比体积流量计量(或质量计量)更科学，更能体现公平贸易。The volume correcting instrument with energy metering function, communication network, energy metering center, gas component and calorific value measuring instrument are constructed into an energy metering system, which is applied in gas pipeline network transmission and distribution, and is a gas metering method from volumetric metering. The premise of energy metering. Since the commercial value of fuel gas is the calorific value contained in it, that is, the essence of gas sales is the energy of gas, not the volume. Therefore, the energy flow measurement of gas is obviously more scientific than the volumetric flow meter (or mass measurement), and it can reflect fair trade.
如图3和图4所示，能量计量体积修正仪，包括外壳、以微处理器为核心的计量组件、温度传感器、压力传感器、热值信号接收处理器、无线通信模块。所述计量组件包括流量、温度、压力信号接口电路、输入输出接口电路、微处理器、按键、显示屏等。所述计量组件位于外壳内，计量组件连接流量传感器(流量计量基表)、压力传感器、温度传感器、热值信号接收处理器。所述计量组件用于接收流量计量基表的脉冲信号并计算工作条件下体积流量，根据压力、温度传感器检测的燃气的实时压力和温度，计算基准条件下体积流量并累计得到基准条件下体积总量，再根据热值信号接收处理器传送的热量值数据，计算得到燃气的能量流量和能量，进而在显示窗口显示体积计量和能量计量的数值。As shown in FIG. 3 and FIG. 4, the energy metering volume correcting instrument comprises a casing, a microprocessor-based metering component, a temperature sensor, a pressure sensor, a calorific value signal receiving processor, and a wireless communication module. The metering component includes a flow, temperature, pressure signal interface circuit, an input and output interface circuit, a microprocessor, a button, a display screen, and the like. The metering component is located in the outer casing, and the metering component is connected to the flow sensor (flow metering base meter), the pressure sensor, the temperature sensor, and the calorific value signal receiving processor. The metering component is configured to receive the pulse signal of the flow meter base table and calculate the volume flow rate under the working condition, calculate the volume flow rate under the reference condition according to the real-time pressure and temperature of the gas detected by the pressure and the temperature sensor, and accumulate the total volume under the reference condition. The quantity, and then receives the heat value data transmitted by the processor according to the calorific value signal, calculates the energy flow rate and energy of the gas, and displays the volume metering and energy metering values in the display window.
所述热值信号接收处理器连接有无线通信模块，用于接收燃气的组分参数、热值数据，从而计算单位体积的热量值，传送给计量组件。天线与无线通信模块连接，并安装在外壳上。
The calorific value signal receiving processor is connected with a wireless communication module for receiving component parameters and calorific value data of the gas, thereby calculating a calorific value per unit volume and transmitting the calorific value to the metering component. The antenna is connected to the wireless communication module and mounted on the housing.
本发明实现原理图如图1所示，在燃气气质采样点采用气相色谱仪或热值仪测量燃气的组分或热值，燃气的组分或热值信息送到能量计量中心，能量计量中心根据燃气的组分信息和热值信息、燃气管网配置、气体流场、不同来源燃气配比、热值数学模型计算出对应区域的燃气单位发热量进行发布；在燃气管网输配计量点安装有配置了能量计量体积修正仪的流量计，并以无线通信方式远程接收发布的本区域热量值或组分数据，应用本地采样的流量、温度、压力数据，计算出基准条件下的体积和能量增量并进行累积得到体积总量和能量总量，并且定时将能量、体积流量等数据通过无线通信网络远传到中心服务器。The schematic diagram of the realization of the present invention is shown in Fig. 1. The gas component or the calorific value is measured by a gas chromatograph or a calorimeter at the gas gas sampling point, and the gas component or calorific value information is sent to the energy metering center, and the energy metering center. According to the component information and calorific value information of the gas, the gas pipe network configuration, the gas flow field, the gas ratio of different sources, and the calorific value mathematical model, the calorific value of the gas unit in the corresponding area is calculated and released; in the gas pipe network transmission and distribution measuring point A flow meter equipped with an energy metering volume corrector is installed, and the heat value or component data of the released area is remotely received by wireless communication, and the locally sampled flow rate, temperature, and pressure data are used to calculate the volume under the reference condition and The energy is incremented and accumulated to obtain the total volume and the total amount of energy, and the data such as energy and volume flow is transmitted to the central server through the wireless communication network at regular intervals.
燃气能量计量采用远传赋值燃气热量，本地采样流量、温度、压力参数，完成基准条件下的体积流量计量和燃气能量计量的方法，实现方式由以下几个部分组成：The gas energy metering adopts the method of remotely assigning gas heat, local sampling flow, temperature and pressure parameters, and completing the volume flow metering and gas energy metering under the reference conditions. The implementation method is composed of the following parts:
(一)安装在能量计量点的能量计量体积修正仪对计量点处的燃气实时压力、实时温度、工作条件下体积流量进行采样。(1) The energy metering volume correcting instrument installed at the energy metering point samples the real-time pressure of the gas at the metering point, the real-time temperature, and the volume flow rate under working conditions.
能量计量体积修正仪从流量计获取流速信息以及从所配套的压力和温度传感器获取燃气温度、压力值，以无线通信方式获取本区域的燃气热量值或组分数据。The energy metering volume corrector obtains the flow rate information from the flow meter and obtains the gas temperature and pressure value from the matched pressure and temperature sensors, and obtains the gas heat value or component data of the area by wireless communication.
(二)能量计量中心接收气相色谱分析仪和热值仪的燃气组分信息和燃气热值信息，计算出相对应能量计量点处的燃气计量区域的燃气单位体积热量，然后通过无线通信网络把该区域的单位体积发热量和燃气组分参数发送到相应计量点处的能量计量体积修正仪,由能量计量体积修正仪完成能量值的计算。(2) The energy metering center receives the gas component information and the gas calorific value information of the gas chromatograph analyzer and the calorimeter, calculates the heat per unit volume of the gas in the gas metering area at the corresponding energy metering point, and then passes the wireless communication network The unit volume heat generation and gas component parameters of the region are sent to the energy metering volume corrector at the corresponding metering point, and the energy metering volume corrector is used to calculate the energy value.
如图2所示，能量计量中心包括用于接收色谱仪或热值仪气质信息的气质通信模块；用于对气质信息进行解析的燃气组分、热值分析模块；用于燃气热量运算处理的热量值运算模块；用于和能量体积修正仪通信的体积量、能量通信模块；远传数据接收发送模块；通信规约解析模块；燃气体积量、能量存储模块；燃气体积量、能量查询模块。As shown in FIG. 2, the energy metering center includes a temperament communication module for receiving temperament information of the chromatograph or the calorimeter; a gas component for analyzing the temperament information, a calorific value analysis module; and a gas heat calculation process. Calorific value calculation module; volume amount, energy communication module for communicating with energy volume corrector; remote data receiving and transmitting module; communication protocol analysis module; gas volume, energy storage module; gas volume, energy query module.
燃气体积量、能量存储模块把收到的燃气体积量和能量数据存储在数据库中。燃气能量值包括燃气能量流量和能量总量，燃气体积量值包括基准条件下体积流量和体积总量。The gas volume, energy storage module stores the received gas volume and energy data in a database. The gas energy value includes the gas energy flow rate and the total amount of energy, and the gas volume amount includes the volume flow rate and the total volume under the reference condition.
数据库中存储的数据包括计量点当前和历史的燃气能量值和体积量值，燃气压力值和燃气温度值。The data stored in the database includes the current and historical gas energy value and volume value of the metering point, the gas pressure value and the gas temperature value.
燃气体积量、能量查询模块可以进行历史和实时的燃气体积量和能量、燃气压力值和燃气温度值数据的查询。The gas volume and energy query module can perform historical and real-time gas volume and energy, gas pressure value and gas temperature value data query.
能量计量中心可以根据系统或项目的规模，选择不同的部署方式。如果计量点比较多，考虑大数据处理和并发能力，需要部署以云计算技术为架构的计算中心；如果规模不大，可以采用普通的服务器。
Energy metering centers can choose different deployment methods depending on the size of the system or project. If there are many measurement points, considering the big data processing and concurrency capabilities, you need to deploy a computing center with cloud computing technology as the architecture; if the scale is small, you can use ordinary servers.
无线通信网络可采用2G/3G/4G或GSM短信息通信网络，距离短时还可采用短程射频无线网络。The wireless communication network can adopt 2G/3G/4G or GSM short message communication network, and short-range radio frequency wireless network can also be used in a short time.
(三)能量计量体积修正仪按一定的采样周期对工作条件下体积流量、温度、压力进行采样，通过数据计算得到基准条件下流量和该计量周期的基准条件体积增量，同时根据接收到的本区域单位体积热值和燃气组分参数，计算出该计量周期的燃气的能量流量和能量增量，通过累积得到基准条件体积总量和能量总量，在能量计量体积修正仪显示窗口就地显示体积计量和能量计量的结果，并通过无线通信网络远传到能量计量中心。(3) The energy metering volume correcting instrument samples the volume flow rate, temperature and pressure under working conditions according to a certain sampling period, and obtains the flow rate under the reference condition and the reference condition volume increment of the metering period by data calculation, and according to the received Calculate the energy flow rate and energy increment of the gas in the metering cycle by calculating the calorific value and gas component parameters per unit volume in the region. By accumulating the total amount of the reference condition volume and the total amount of energy, the display window of the energy metering volume correction device is in situ. The results of volumetric metering and energy metering are displayed and transmitted remotely to the energy metering center via a wireless communication network.
步骤(二)中的能量计量中心根据燃气的组分信息和热值信息、燃气管网配置、气体流场、不同来源燃气配比、热值数学模型计算出对应区域的燃气发热量值，通过无线通信网络发送给相应区域内的所有能量计量体积修正仪。The energy metering center in step (2) calculates the calorific value of the gas in the corresponding region according to the component information and calorific value information of the gas, the gas pipe network configuration, the gas flow field, the gas ratio of different sources, and the calorific value mathematical model. The wireless communication network transmits to all energy metering volume correctors in the corresponding area.
步骤(三)中的能量计量体积修正仪按公式Energy metering volume corrector in step (3) according to the formula
计算出基准条件下的体积增量和能量增量，累积得到体积总量和能量总量，将得到的数据，通过无线通信网络传送到能量计量中心。The volume increment and energy increment under the reference condition are calculated, the total volume and the total amount of energy are accumulated, and the obtained data is transmitted to the energy metering center through the wireless communication network.
式中：式中：E：燃气的能量总量；Where: in the formula: E: the total amount of energy of the gas;
F(t)：燃气在工作条件下t时刻的体积流量；F(t): volumetric flow rate of gas at time t under working conditions;
Hs：某段时间内或t时刻基准条件下燃气单位发热量；Hs: the calorific value of the gas unit under the reference condition within a certain period of time or time t;
P：为燃气压力；P: is the gas pressure;
T：为燃气温度；T: is the gas temperature;
Z：为燃气压缩因子；Z: is the gas compression factor;
下标“b”代表基准状态，(t)表示在t时刻。The subscript "b" represents the reference state, and (t) represents the time t.
能量计量体积修正仪计算结果，如计算和测量得到的体积流量和能量值、温度、压力等数据，通过无线通信网络传送到能量计量中心。能量计量体积修正仪可由电池供电进行定时或定间隔的无线通信，也可由专用安全电源供电实时在线工作，可满足多种场合完成热值信息接收、燃气能量与体积流量计量、流量数据无线上传的需要。The energy metering volume corrector calculates the results, such as calculated and measured volume flow and energy values, temperature, pressure and other data, transmitted to the energy metering center through the wireless communication network. The energy metering volume correcting device can be powered by battery for timing or fixed interval wireless communication, or can be operated by real-time online power supply by dedicated safety power supply. It can meet the requirements of receiving calorific value information, gas energy and volume flow metering, and wirelessly uploading flow data in various occasions. need.
实施例不应视为对本发明的限制，但任何基于本发明的精神所作的改进，都应在本发明的保护范围之内。
The examples are not to be considered as limiting the invention, but any modifications made based on the spirit of the invention are intended to be included within the scope of the invention.
Claims (4)
- 一种燃气能量计量方法，其特征在于：其包括以下步骤，A gas energy metering method, characterized in that it comprises the following steps,(一)能量计量体积修正仪对计量点处的燃气的压力、温度、工况流量进行实时采样，并通过无线通信网络接收能量计量中心发布的本燃气计量区域的燃气发热量值和燃气组分参数；(1) The energy metering volume correcting device performs real-time sampling on the pressure, temperature and working condition flow of the gas at the measuring point, and receives the gas calorific value and the gas component of the gas metering area issued by the energy metering center through the wireless communication network. parameter;(二)能量计量中心接收气相色谱分析仪和热值仪的燃气组分信息和燃气热值信息，计算出相对应能量计量点处的燃气计量区域的燃气单位体积热量，然后通过无线通信网络把该区域的单位体积发热量和燃气组分参数发送到相应计量点处的能量计量体积修正仪,由能量计量体积修正仪完成能量值的计算；(2) The energy metering center receives the gas component information and the gas calorific value information of the gas chromatograph analyzer and the calorimeter, calculates the heat per unit volume of the gas in the gas metering area at the corresponding energy metering point, and then passes the wireless communication network The unit volume heat generation and gas component parameters of the region are sent to the energy metering volume corrector at the corresponding metering point, and the energy metering volume corrector is used to calculate the energy value;(三)能量计量体积修正仪按一定的采样周期对工作条件下体积流量、温度、压力进行采样，通过数据计算得到基准条件下流量和该计量周期的基准条件体积增量，同时根据接收到的本区域单位体积热值和燃气组分参数，计算出该计量周期的燃气的能量流量和能量增量，通过累积得到基准条件体积总量和能量总量，在能量计量体积修正仪显示窗口就地显示体积计量和能量计量的结果，并通过无线通信网络远传到能量计量中心。(3) The energy metering volume correcting instrument samples the volume flow rate, temperature and pressure under working conditions according to a certain sampling period, and obtains the flow rate under the reference condition and the reference condition volume increment of the metering period by data calculation, and according to the received Calculate the energy flow rate and energy increment of the gas in the metering cycle by calculating the calorific value and gas component parameters per unit volume in the region. By accumulating the total amount of the reference condition volume and the total amount of energy, the display window of the energy metering volume correction device is in situ. The results of volumetric metering and energy metering are displayed and transmitted remotely to the energy metering center via a wireless communication network.
- 根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(二)中的能量计量中心根据燃气的组分信息和热值信息、燃气管网配置、气体流场、不同来源燃气配比、热值数学模型计算出对应区域的燃气发热量值，通过无线通信网络发送给相应区域内的所有能量计量体积修正仪。The gas energy metering method according to claim 1, wherein the energy metering center in step (2) is based on component information and calorific value information of the gas, gas pipe network configuration, gas flow field, gas of different sources. The mathematical model of the ratio and calorific value calculates the calorific value of the gas in the corresponding region, and sends it to all the energy metering volume correctors in the corresponding region through the wireless communication network.
- 根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(二)中的能量计量中心包括用于接收色谱仪或热值仪气质信息的气质通信模块；用于对气质信息进行解析的燃气组分、热值分析模块；用于燃气热量运算处理的热量值运算模块；用于和能量体积修正仪通信的体积量、能量通信模块；远传数据接收发送模块；通信规约解析模块；燃气体积量、能量存储模块；燃气体积量、能量查询模块。The gas energy metering method according to claim 1, wherein the energy metering center in step (2) comprises a temperament communication module for receiving temperament information of the chromatograph or the calorimeter; and for performing temperament information Analyzed gas component, calorific value analysis module; calorific value calculation module for gas heat calculation processing; volume amount and energy communication module for communication with energy volume corrector; remote data reception and transmission module; communication protocol analysis module Gas volume, energy storage module; gas volume, energy query module.
- 根据权利要求1所述的一种燃气能量计量方法，其特征在于，步骤(三)中的能量计量体积修正仪按公式A gas energy metering method according to claim 1, wherein the energy metering volume correcting device in step (3) is formulated according to the formula
计算出基准条件下的体积增量和能量增量，累积得到体积总量和能量总量，将得到的数据，通过无线通信网络传送到能量计量中心；Calculate the volume increment and energy increment under the reference condition, accumulate the total volume and the total amount of energy, and transfer the obtained data to the energy metering center through the wireless communication network;式中：E：燃气的能量总量；Where: E: the total amount of energy of the gas;F(t)：燃气在工作条件下t时刻的体积流量；F(t): volumetric flow rate of gas at time t under working conditions;Hs：某段时间内或t时刻基准条件下燃气单位发热量；Hs: the calorific value of the gas unit under the reference condition within a certain period of time or time t;P：为燃气压力；P: is the gas pressure;T：为燃气温度；T: is the gas temperature;Z：为燃气压缩因子；Z: is the gas compression factor;下标“b”代表基准状态，(t)表示在t时刻。 The subscript "b" represents the reference state, and (t) represents the time t.
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| CN104197984A (en) | 2014-12-10 |
| CN104197984B (en) | 2017-01-18 |
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