An intelligent steam metering device and method based on the Internet of Things

Abstract

This invention relates to an intelligent steam metering device and method based on the Internet of Things (IoT), comprising a steam pipeline to be measured, a first branch, and a second branch; the design flow rates of the first and second branches are exactly equal, and an insertion flow meter is installed on the first branch, while a simulated insertion rod is installed on the second branch at a position corresponding to the insertion flow meter. A data processing module is connected to the insertion flow meter to obtain the main flow rate of the steam pipeline to be measured based on the flow rate detected by the insertion flow meter; the data processing module is also connected to an electronic control on / off device to open or close the second branch based on the relationship between the flow rate of the first branch detected by the insertion flow meter and the design flow rate of the steam pipeline to be measured; after completing the measurement and data processing, the data is transmitted to a back-end server, which can accurately determine the hydraulic balance problem of the steam pipeline network, accurately conduct heating energy consumption index analysis, contribute to energy conservation and carbon reduction, and promote the healthy development of the industry.

Description

Technical Field

[0001] The present invention relates to the technical field of Internet of Things intelligent instruments, and in particular to an intelligent steam metering device and method based on the Internet of Things. Background Art

[0002] Energy consumption index is a key index of heating system. In addition to relying on the energy-saving design of the thermal system itself, it also relies heavily on the accuracy of the metering device. However, the accuracy of the metering terminal has seriously restricted the development of heating technology and has become a bottleneck in the development of energy consumption index control technology for urban residential heating and industrial centralized heating. Among them, the problem of steam metering for industrial centralized heating is particularly serious.

[0003] At present, there are generally two forms of steam metering in industrial heating systems: differential pressure and vortex flow. Regardless of differential pressure flowmeters or vortex flowmeters, their installation requires a certain number of front and rear straight pipe sections, which are difficult to meet in general installation environments. This is also a factor in inaccurate measurements. At the same time, the nameplate range of the flow metering device is a measurement range applicable to specific reference media, design temperature and pressure, while the actual steam flow value in actual industrial systems often deviates from the design flow value, and some deviations are still large. In this case, it may have exceeded the effective range of the flow meter. At this time, the measured value has no reference value, and the energy consumption control and evaluation based on it are inaccurate. In summary, the existing steam metering methods cannot avoid the problem of steam metering accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art, thereby providing an intelligent steam metering device and method based on the Internet of Things.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An intelligent steam metering device based on the Internet of Things, comprising a steam pipeline to be measured, an inlet butt-joint pipe, a front end mother pipe, a rear end mother pipe, a first branch and a second branch, wherein the steam pipeline to be measured is connected to the front end mother pipe through the inlet butt-joint pipe, the front end mother pipe is connected to the first branch and the second branch respectively, and the rear end mother pipe is connected to the first branch and the second branch respectively;

[0007] The designed flow rates of the first branch and the second branch are completely equal, and an insertion flow meter is provided on the first branch, a simulated insertion rod is provided at a position corresponding to the insertion flow meter on the second branch, and an electric control on-off device is provided on the second branch;

[0008] It also includes a data processing module, which is connected to the insertion flow meter and is used to obtain the main flow of the steam pipeline to be measured according to the detection flow of the insertion flow meter;

[0009] The data processing module is connected to the electric control on-off device, and controls the electric control on-off device based on the relationship between the flow of the first branch detected by the insertion flow meter and the design flow of the steam pipeline to be measured, so as to open or close the second branch;

[0010] It also includes a back-end server, the data processing module is wirelessly connected to the back-end server, and the back-end server is used to receive and store the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module.

[0011] Preferably, a temperature sensor and a pressure sensor are also provided on the first branch, and both the temperature sensor and the pressure sensor are connected to the data processing module. The data processing module is also used to receive data from the temperature sensor and the pressure sensor to correct the detection flow of the insertion flow meter.

[0012] Preferably, the diameters of the first branch and the second branch are d, the pipeline between the insertion flow meter and the front-end mother pipe is a front-end straight pipeline, and the pipeline between the insertion flow meter and the rear-end mother pipe is a rear-end straight pipeline;

[0013] The insertion flow meter is located on the first branch road such that the length of the front straight pipe is ≥20d, and the length of the rear straight pipe is ≥15d.

[0014] Preferably, the temperature sensor and the pressure sensor are arranged on the rear end straight pipe.

[0015] Preferably, a first manual door and a second manual door are arranged in parallel on the rear end straight pipe; a third manual door is arranged on the second branch at a position corresponding to the first manual door and the second manual door, and the electric control on-off device is arranged side by side with the third manual door.

[0016] Preferably, the data processing module is communicatively connected to the nearest 5G base station; the 5G base station and the back-end server are connected via a dedicated IoT wireless communication.

[0017] Preferably, the back-end server includes a cloud server and a local server arranged at a heat source, and the cloud server and the local server are communicatively connected.

[0018] To achieve the above purpose, the present invention also adopts the following technical solutions:

[0019] An intelligent steam metering method based on the Internet of Things, using the above-mentioned intelligent steam metering device based on the Internet of Things to perform steam metering, comprises the following steps:

[0020] Design and production steps,

[0021] According to the pipe model of the steam pipeline to be measured, select the pipe diameter D and wall thickness of the inlet butt pipe;

[0022] According to the designed steam flow Q of the steam pipeline to be measured, Q / 2 is selected as the designed flow of the first branch and the second branch, and the structure, pipe diameter d and wall thickness of the first branch and the second branch are ensured to be substantially consistent;

[0023] An insertion flow meter is arranged in the first branch as a steam flow meter, and the length of the front straight pipe of the insertion flow meter is ensured to be at least 20d, and the length of the rear straight pipe is at least 15d;

[0024] A simulated insertion rod is arranged at a position corresponding to the insertion flow meter on the second branch, and the size and insertion depth of the simulated insertion rod are consistent with the size and insertion depth of the insertion flow meter;

[0025] An electric control on-off device is provided on the second branch;

[0026] Setting a data processing module, connecting the data processing module and the insertion flow meter, and connecting the data processing module and the electric control on-off device;

[0027] Measurement steps:

[0028] The insertion flow meter detects the steam flow of the first branch, and the measurement data is transmitted to the data processing module through a signal line, and the data processing module processes to obtain the steam flow q of the first branch;

[0029] When 2q is less than half of the designed steam flow rate Q, the data processing module controls to close the electric control on-off device, transmits the data of the insertion flow meter to the data processing module through the signal line, and the data processing module processes to obtain the steam flow rate q of the first branch as the steam flow rate of the steam pipeline to be measured;

[0030] When 2q is greater than or equal to half of the designed steam flow rate Q, the data processing module controls to open the electric control on-off device, so that the steam pipeline to be measured flows evenly into the first branch and the second branch, and the data of the insertion flow meter is transmitted to the data processing module through the signal line. The data processing module processes to obtain the steam flow rate q of the first branch, and then multiplies it by 2 internally as the steam flow rate of the steam pipeline to be measured;

[0031] Information storage steps,

[0032] The data processing module sends the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module to the back-end server;

[0033] The back-end server receives and stores the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module.

[0034] Preferably, the design and production step further includes:

[0035] A temperature sensor and a pressure sensor are arranged on the first branch, and the temperature sensor and the pressure sensor are located on the rear end straight pipe;

[0036] Setting the temperature sensor and the pressure sensor to be communicatively connected with the data processing module;

[0037] The measuring step further comprises:

[0038] The data processing module receives data from the temperature sensor and the pressure sensor, and corrects the flow rate detected by the insertion flow meter according to the relationship between fluid density and flow rate of the Bernoulli equation.

[0039] Preferably, the measuring step further comprises:

[0040] The data processing module transmits the data to the nearest 5G base station through the 5G network, and then transmits the data to the back-end server through the dedicated Internet of Things;

[0041] After receiving the data, the cloud server in the back-end server decodes the data and stores it in the database of the local server.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The intelligent steam metering device and method based on the Internet of Things provided in the above technical solution evenly distributes the steam flow of the steam pipeline to be measured by setting a first branch and a second branch with completely equal design flow rates, thereby solving the problem of inaccurate steam measurement when the flow rate variation range is large. When the steam flow of the steam pipeline to be measured is small and twice the steam flow q of the first branch is less than half of the design steam flow Q, in order to improve the measurement accuracy, the second branch is closed so that all the steam of the steam pipeline to be measured passes through the first branch, and the measurement data of the insertion flowmeter is the steam flow of the steam pipeline to be measured; when the steam flow of the steam pipeline to be measured is large and twice the steam flow q of the first branch is greater than or equal to half of the design steam flow Q, in order to avoid the steam flow passing through the first branch exceeding the range of the insertion flowmeter, the second branch is opened so that the steam of the steam pipeline to be measured enters the first branch and the second branch on average, and the steam flow q of the first branch is measured and then multiplied by 2 internally to obtain the steam flow of the steam pipeline to be measured. After completing the measurement and data processing, the data will be transmitted to the back-end server, which can accurately judge the hydraulic balance problem of the steam pipeline network, accurately carry out the analysis of heating energy consumption indicators, contribute to energy conservation and carbon reduction, economic operation, and promote the healthy development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a schematic structural diagram of an intelligent steam metering device based on the Internet of Things provided in an embodiment of the present invention.

[0046] Description of reference numerals:

[0047] 1. Inlet butt pipe; 2. Outlet butt pipe; 3. Front-end mother pipe; 4. Rear-end mother pipe; 5. First branch; 51. Insertion flow meter; 52. Temperature sensor; 53. Pressure sensor; 54. Front-end straight pipe; 55. Rear-end straight pipe; 56. First manual door; 57. Second manual door; 6. Second branch; 61. Electric on-off device; 62. Analog insertion rod; 63. Third manual door; 7. Data processing module; 71. 5G base station; 8. Back-end server; 81. Cloud server; 82. Local server; 83. Firewall. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] As attached Figure 1 As shown, an embodiment of the present invention provides an intelligent steam metering device based on the Internet of Things, including a steam pipeline to be measured (not shown), an inlet butt-joint pipe 1, a front-end mother pipe 3, a rear-end mother pipe 4, a first branch 5 and a second branch 6. The steam pipeline to be measured is connected to the front-end mother pipe 3 through the inlet butt-joint pipe 1, the front-end mother pipe 3 is respectively connected to the first branch 5 and the second branch 6, and the rear-end mother pipe 4 is respectively connected to the first branch 5 and the second branch 6; the first branch 5 and the second branch 6 are arranged side by side in parallel. The rear-end mother pipe 4 is also provided with an outlet butt-joint pipe 2 for connecting to the user side.

[0052] Among them, the design flow rates of the first branch 5 and the second branch 6 are completely equal. Specifically, according to the design steam flow rate Q of the steam pipeline to be measured, Q / 2 is selected as the design flow rate of the first branch 5 and the second branch 6, and the structure, pipe diameter d and wall thickness of the first branch 5 and the second branch 6 are basically the same, so as to ensure that the steam pipeline to be measured can flow into the first branch 5 and the second branch 6 evenly. In addition, an insertion flow meter 51 is provided on the first branch 5, and a simulated insertion rod 62 is provided at a position corresponding to the insertion flow meter 51 on the second branch 6. The purpose of setting the simulated insertion rod 62 is that the insertion flow meter 51 will interfere with the steam flow direction in the first branch 5. The simulated insertion rod 62 can ensure that the steam pipe loss of the first branch and the second branch is consistent, thereby ensuring that the flow rates of the first branch and the second branch are completely equal; at the same time, it can be used as a technical measure for regular calibration and replacement in the later stage, and can be replaced with a standard flow meter at any time for measurement verification. Preferably, the size and insertion depth of the simulated insertion rod 62 are consistent with the size and insertion depth of the insertion flow meter 51, or there is a deviation within an acceptable range.

[0053] The second branch 6 is provided with an electrically controlled on-off device 61, which can control the on-off of the second branch 6 according to the actual steam flow of the steam pipeline to be measured, thereby ensuring that the steam flow flowing through the first branch 5 is within a relatively accurate measuring range of the insertion flowmeter 51, thereby improving the accuracy of steam metering.

[0054] The intelligent steam metering device based on the Internet of Things also includes a data processing module 7, which is connected to the insertion flow meter 51 and is used to obtain the main flow of the steam pipeline to be measured according to the detection flow of the insertion flow meter 51. The data processing module 7 and the insertion flow meter 51 can be connected by wire or wirelessly. The specific measurement method is:

[0055] The insertion flow meter 51 detects the steam flow rate of the first branch 5, and the measurement data is transmitted to the data processing module 7 through the signal line. The data processing module 7 processes and obtains the steam flow rate q of the first branch 5;

[0056] When 2q is less than half of the designed steam flow rate Q, the data processing module 7 controls to close the electric control on-off device 61, transmits the data of the insertion flow meter 51 to the data processing module 7 through the signal line, and the data processing module 7 processes to obtain the steam flow rate q of the first branch 5 as the steam flow rate of the steam pipeline to be measured;

[0057] When 2q is greater than or equal to half of the designed steam flow rate Q, the data processing module 7 controls the opening of the electric control on-off device 61, so that the steam pipeline to be measured flows evenly into the first branch 5 and the second branch 6, and the data of the insertion flow meter 51 is transmitted to the data processing module 7 through the signal line. The data processing module 7 processes the data to obtain the steam flow rate q of the first branch 5, and then multiplies it by 2 internally as the steam flow rate of the steam pipeline to be measured;

[0058] The data processing module 7 is connected to the electric control on-off device 61, which can be a wired connection or a wireless connection. Based on the relationship between the flow rate of the first branch 5 detected by the insertion flow meter 51 and the design flow rate of the steam pipeline to be measured, the electric control on-off device 61 is controlled to open or close the second branch 6. The measurement circuit can be selected according to the change of the flow rate, and the steam flow rate detection with a wide parameter range can be performed. The electric control on-off device 61 can be an electric control door or an electric control valve.

[0059] The embodiment of the present invention divides two almost identical branches from a steam pipe to be measured, and evenly divides the large steam flow into two equal small flows, thereby reducing the absolute range of flow change; by measuring the flow value of the small flow, the steam flow value of the steam pipe to be measured is calculated. When the actual steam flow value is only half of the designed steam flow, the second branch 6 can be automatically closed. At this time, the flow value of the first branch 5 is close to the designed value, and the flow value is within the range of the plug-in flow value, and the measurement accuracy is greatly improved.

[0060] Considering that most industrial heating users are small, scattered and remote heat-using enterprises, which are far away from the heat source, and the existing steam terminal metering devices are all 2G or 4G technology products, and the data interaction with the heating monitoring system is with the help of PLC and other control equipment, which is a traditional automatic control technology with backward communication methods. Therefore, the intelligent steam metering device based on the Internet of Things in the embodiment of the present invention also includes a back-end server 8, and the data processing module 7 is wirelessly connected to the back-end server 8. The back-end server 8 is used to receive the data of the insertion flow meter 51 and the steam flow data of the steam pipeline to be measured after processing by the data processing module 7 and store them. The back-end server 8 may include any server in the heat source plant, which greatly reduces the intermediate automatic control equipment, reduces the cost, simplifies the data link and improves the data transmission efficiency.

[0061] In addition, in the design and production steps, it is also necessary to select the pipe diameter D and wall thickness of the inlet butt joint 1 according to the pipe model of the steam pipeline to be measured, so as to avoid the inlet butt joint 1 affecting the steam transmission of the steam pipeline to be measured.

[0062] This embodiment uses an insertion flow meter 51, which has certain requirements for the installation environment. To avoid measurement errors caused by installation, the pipeline between the insertion flow meter 51 and the front end mother pipe 3 is a front end straight pipe 54, and the pipeline between the insertion flow meter 51 and the rear end mother pipe 4 is a rear end straight pipe 55. The length of the front end straight pipe 54 of the insertion flow meter 51 is 20d, and the length of the rear end straight pipe 55 is 15d.

[0063] Preferably, a temperature sensor 52 and a pressure sensor 53 are also provided on the first branch 5, and both the temperature sensor 52 and the pressure sensor 53 are connected to the data processing module 7. The data processing module 7 is also used to receive data from the temperature sensor 52 and the pressure sensor 53, and to correct the detected flow rate of the insertion flowmeter 51 according to the relationship between the fluid density (related to temperature and pressure) and the flow rate in the Bernoulli equation. The temperature sensor 52 and the pressure sensor 53 can be connected to the data processing module 7 by wire or wirelessly, and the data processing module 7 can be a control chip, which is a prior art and will not be described in detail here.

[0064] In order to avoid the influence of the temperature sensor 52 and the pressure sensor 53 on the steam, the temperature sensor 52 and the pressure sensor 53 are arranged on the rear end straight pipe 55 .

[0065] Preferably, a first manual door 56 and a second manual door 57 are arranged in parallel on the rear straight pipe 55; a third manual door 63 is arranged on the second branch 6 at a position corresponding to the first manual door 56 and the second manual door 57; an electric on-off device 61 and the third manual door 63 are arranged side by side, and the user can manually close the first branch 5 and the second branch 6. The electric on-off device can be an electric door, and since the electric door may not be closed tightly, a manual door is considered to be arranged in front of the electric door; in order to maintain the consistency of the local resistance loss of the first branch and the second branch, two doors are arranged at corresponding positions on the first branch, and two manual doors are selected to reduce the cost and practicality. The position of the first manual door corresponds to the position of the third manual door, and the position of the second manual door corresponds to the position of the electric door.

[0066] In the steam metering method of the embodiment of the present invention, the information storage step is: the data processing module 7 sends the data of the insertion flow meter 51 and the steam flow data of the steam pipeline to be measured after processing by the data processing module 7 to the back-end server 8; the back-end server 8 receives the data of the insertion flow meter 51 and the steam flow data of the steam pipeline to be measured after processing by the data processing module 7 and stores them.

[0067] Specifically, the data processing module 7 is communicated with the nearest 5G base station 71, which can be a wired communication connection or a 5G communication connection. When it is a 5G communication connection, the data processing module 7 is provided with a 5G signal transmitting chip for wireless communication connection with the 5G base station 71; the 5G base station 71 and the back-end server 8 are connected through a dedicated IoT wireless communication. Specifically, the 5G base station 71 transmits the data of each measuring point and the data processing module 7 to the server according to a predetermined communication protocol. No other hardware units are required in the middle, realizing direct IoT communication, greatly simplifying the data collection process, reducing the equipment investment cost, and improving the efficiency and accuracy of data collection and transmission.

[0068] In order to reduce costs and improve storage efficiency, the backend server 8 includes a cloud server 81 and a local server 82 set at a heat source. The cloud server 81 and the local server 82 are connected in communication, and the data sent by the data processing module 7 can be stored in the local server 82 or the cloud server 81. A firewall 83 is provided on the local server 82.

[0069] Therefore, the steam metering device of the embodiment of the present invention completes data perception, collection and storage, and can select the measurement circuit in combination with the actual steam flow of the steam pipeline to be measured, and select to flow only through the first branch 5 or flow evenly into the first branch 5 and the second branch 6, so that the insertion flow meter 51 can perform steam flow detection over a wide parameter range; at the same time, combined with the 5G network, special data transmission of the dedicated Internet of Things is realized, realizing flexible, accurate, efficient and convenient data collection and transmission, bringing revolutionary changes to steam metering in the industry.

[0070] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An intelligent steam metering device based on the Internet of Things, characterized in that: It includes a steam pipeline to be measured, an inlet butt pipe, a front end mother pipe, a rear end mother pipe, a first branch and a second branch, wherein the steam pipeline to be measured is connected with the front end mother pipe through the inlet butt pipe, the front end mother pipe is connected with the first branch and the second branch respectively, and the rear end mother pipe is connected with the first branch and the second branch respectively; The designed flow rates of the first branch and the second branch are completely equal, and an insertion flow meter is provided on the first branch, a simulated insertion rod is provided at a position corresponding to the insertion flow meter on the second branch, and an electric control on-off device is provided on the second branch; The device further comprises a data processing module, which is connected to the insertion flow meter and is used to obtain the main flow of the steam pipeline to be measured according to the detection flow of the insertion flow meter. The data processing module is connected to the electric control on-off device, and controls the electric control on-off device based on the relationship between the flow of the first branch detected by the insertion flow meter and the design flow of the steam pipeline to be measured, so as to open or close the second branch; The data processing module is also used to control the closing of the electric control on-off device when the steam flow rate q of the first branch is obtained, and when 2q is less than half of the designed steam flow rate Q, transmit the data of the insertion flow meter to the data processing module through a signal line, and the data processing module processes and obtains the steam flow rate q of the first branch as the steam flow rate of the steam pipeline to be measured; when 2q is greater than or equal to half of the designed steam flow rate Q, control the opening of the electric control on-off device to make the steam pipeline to be measured flow into the first branch and the second branch on average, obtain the steam flow rate q of the first branch, and then multiply it by 2 internally as the steam flow rate of the steam pipeline to be measured; It also includes a back-end server, the data processing module is wirelessly connected to the back-end server, and the back-end server is used to receive and store the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module; The first branch is also provided with a temperature sensor and a pressure sensor, both of which are connected to the data processing module, and the data processing module is also used to receive data from the temperature sensor and the pressure sensor to correct the detection flow of the insertion flow meter.

2. The intelligent steam metering device based on the Internet of Things according to claim 1 is characterized in that: The pipe diameters of the first branch and the second branch are d, the pipe between the insertion flow meter and the front end mother pipe is a front end straight pipe, and the pipe between the insertion flow meter and the rear end mother pipe is a rear end straight pipe; The insertion flow meter is located on the first branch road such that the length of the front straight pipe is ≥20d, and the length of the rear straight pipe is ≥15d.

3. The intelligent steam metering device based on the Internet of Things according to claim 2 is characterized in that: The temperature sensor and the pressure sensor are arranged on the rear end straight pipe.

4. The intelligent steam metering device based on the Internet of Things according to claim 2 is characterized in that: The rear end straight pipe is provided with a first manual door and a second manual door in parallel; the second branch is provided with a third manual door at a position corresponding to the first manual door and the second manual door, and the electric control on-off device is arranged side by side with the third manual door.

5. The intelligent steam metering device based on the Internet of Things according to claim 1 is characterized in that: The data processing module is communicatively connected to the nearest 5G base station; the 5G base station and the back-end server are connected via dedicated IoT wireless communication.

6. The intelligent steam metering device based on the Internet of Things according to claim 5 is characterized in that: The back-end server includes a cloud server and a local server arranged at a heat source, and the cloud server is communicatively connected with the local server.

7. An intelligent steam metering method based on the Internet of Things, characterized in that: The method of using the intelligent steam metering device based on the Internet of Things as claimed in any one of claims 1 to 6 to perform steam metering comprises the following steps: Design and production steps, According to the pipe model of the steam pipeline to be measured, select the pipe diameter D and wall thickness of the inlet butt pipe; According to the designed steam flow Q of the steam pipeline to be measured, Q / 2 is selected as the designed flow of the first branch and the second branch, and the structure, pipe diameter d and wall thickness of the first branch and the second branch are ensured to be substantially consistent; An insertion flow meter is arranged in the first branch as a steam flow meter, and the length of the front straight pipe of the insertion flow meter is ensured to be at least 20d, and the length of the rear straight pipe is at least 15d; A simulated insertion rod is arranged at a position corresponding to the insertion flow meter on the second branch, and the size and insertion depth of the simulated insertion rod are consistent with the size and insertion depth of the insertion flow meter; An electric control on-off device is provided on the second branch; Setting a data processing module, connecting the data processing module and the insertion flow meter, and connecting the data processing module and the electric control on-off device; Measurement steps: The insertion flow meter detects the steam flow of the first branch, and the measurement data is transmitted to the data processing module through a signal line, and the data processing module processes to obtain the steam flow q of the first branch; When 2q is less than half of the designed steam flow rate Q, the data processing module controls to close the electric control on-off device, transmits the data of the insertion flow meter to the data processing module through the signal line, and the data processing module processes to obtain the steam flow rate q of the first branch as the steam flow rate of the steam pipeline to be measured; When 2q is greater than or equal to half of the designed steam flow rate Q, the data processing module controls to open the electric control on-off device, so that the steam pipeline to be measured flows evenly into the first branch and the second branch, and the data of the insertion flow meter is transmitted to the data processing module through the signal line. The data processing module processes to obtain the steam flow rate q of the first branch, and then multiplies it by 2 internally as the steam flow rate of the steam pipeline to be measured; Information storage steps, The data processing module sends the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module to the back-end server; The back-end server receives and stores the data of the insertion flow meter and the steam flow data of the steam pipeline to be measured after being processed by the data processing module.

8. The intelligent steam metering method based on the Internet of Things according to claim 7, characterized in that: The design and production steps also include: A temperature sensor and a pressure sensor are arranged on the first branch, and the temperature sensor and the pressure sensor are located on the rear end straight pipe; Setting the temperature sensor and the pressure sensor to be communicatively connected with the data processing module; The measuring step further comprises: The data processing module receives data from the temperature sensor and the pressure sensor, and corrects the detected flow rate of the insertion flow meter according to the relationship between fluid density and flow rate of the Bernoulli equation.

9. The intelligent steam metering method based on the Internet of Things according to claim 7 is characterized in that: The measuring step further comprises: The data processing module transmits the data to the nearest 5G base station through the 5G network, and then transmits the data to the back-end server through the dedicated Internet of Things; After receiving the data, the cloud server in the back-end server decodes the data and stores it in the database of the local server.

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