Heat meter with flow monitoring function

Abstract

The utility model relates to the technical field of heat meters, in particular to a heat meter with a flow monitoring function, which comprises a turbine flowmeter, two ends of the turbine flowmeter are respectively connected with a water inlet pipe and a water outlet pipe through detachable connection, and a meter body shell is fixed on the turbine flowmeter through detachable connection. A microprocessor electrically connected with a magnetoelectric sensor of the turbine flowmeter is fixed in the meter body shell, ultrasonic flow sensors are fixed on the water inlet pipe and the water outlet pipe, and a temperature sensor is fixed at one end, close to the turbine flowmeter, of each of the water inlet pipe and the water outlet pipe; and the power supply module supplies power to the electric energy meter. The device has the advantages that flow monitoring is carried out in the mode that the turbine flow meter and the ultrasonic flow sensor are combined, the accuracy and reliability of flow measurement are improved, the flow monitoring requirements under various complex working conditions can be met, and a powerful guarantee is provided for accurate heat metering.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat meter technical field especially is related to a heat meter with flow monitoring function. BACKGROUND

[0002] In central heating and industrial heat supply systems, heat meters are key devices for measuring heat consumption. Traditional heat meters can usually only measure heat, but the flow monitoring of the heating medium (such as water) is not accurate and comprehensive enough, and cannot meet the needs of some application scenarios that are sensitive to flow changes. For example, in large heating pipe networks, unstable flow can lead to insufficient or excessive heating in local areas, affecting the heating effect and energy utilization efficiency; and the existing heat meters are prone to problems such as flow sensor blockage and wear when dealing with complex water quality and different working conditions, affecting their service life and measurement accuracy. Therefore, it is necessary to develop a new type of heat meter with flow monitoring function to solve the above problems. SUMMARY

[0003] The utility model is just to solve the above problem and propose a kind of heat meter with flow monitoring function, the heat meter can accurately monitor the flow of heating medium, adapt to complex working conditions and water quality conditions, improve the accuracy and reliability of heat measurement, and have good stability and long service life.

[0004] The technical scheme of the utility model is as follows:

[0005] A heat meter with flow monitoring function, comprising a turbine flowmeter, the turbine flowmeter is connected with an inlet pipe and an outlet pipe at both ends through detachable connection, the inlet pipe and the outlet pipe are fixed with a connecting flange at one end away from the turbine flowmeter, the turbine flowmeter is fixed with a meter body shell through detachable connection, a microprocessor electrically connected with the magnetoelectric sensor of the turbine flowmeter is fixed in the meter body shell, a display and an operation button are inlaid on the surface of the meter body shell, ultrasonic flow sensors are fixed on the inlet pipe and the outlet pipe, one temperature sensor is fixed on one end of the inlet pipe and the outlet pipe close to the turbine flowmeter, the display, the operation button, the temperature sensor, the ultrasonic flow sensor and the microprocessor are electrically connected, and further comprising a power module for power supply of electric energy meter.

[0006] Further, the inlet pipe is fixed with a filter cover at one end away from the turbine flowmeter.

[0007] Further, a flushing nozzle is fixed in the water inlet pipe and the water outlet pipe near the ultrasonic flow sensor, the water outlet end of the flushing nozzle is arranged towards the probe of the ultrasonic flow sensor, the flushing nozzle is connected with an electric water pump through a flushing pipe, the electric water pump is fixed in the operation button, and the electric water pump is electrically connected with the power module and the microprocessor, and the water inlet end of the electric water pump is connected to the inside of the turbine flowmeter.

[0008] Further, a flushing nozzle is fixed in the water inlet pipe and the water outlet pipe near the ultrasonic flow sensor, the water outlet end of the flushing nozzle is arranged towards the probe of the ultrasonic flow sensor, the flushing nozzle is connected with an electric water pump through a flushing pipe, the electric water pump is fixed in the operation button, and the electric water pump is electrically connected with the power module and the microprocessor, and the water inlet end of the electric water pump is connected to the inside of the turbine flowmeter.

[0009] With the above technical scheme, the utility model discloses the beneficial effects are:

[0010] 1, adopt the turbine flowmeter and ultrasonic flow sensor combination mode and carry out flow monitoring, improve the accuracy and reliability of flow measurement, can satisfy the flow monitoring demand under various complex working conditions, provide strong guarantee for accurate heat measurement;

[0011] 2, the setting of flushing nozzle effectively solves the problem that the ultrasonic flow sensor is blocked due to complex water quality, prolongs the service life of flow sensor, reduces the maintenance cost and downtime of heat meter;

[0012] 3, standard pipe connection flange and detachable shell design, facilitate the installation and maintenance of heat meter, improve work efficiency, reduce installation and maintenance difficulty. ACCURACY

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0014] Figure 1 It is the perspective view of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is the top view of the utility model;

[0017] Figure 4 It is the sectional view of the utility model;

[0018] Figure 5 It is the circuit structure block diagram of the utility model.

[0019] The reference numerals are explained as follows:

[0020] 1. turbine flowmeter; 2. meter housing; 3. inlet pipe; 4. outlet pipe; 5. connecting flange; 6. display; 7. operation button; 8. filter cover; 9. power module; 10. microprocessor; 11. electric water pump; 12. temperature sensor; 13. flushing pipe; 14. ultrasonic flow sensor; 15. flushing nozzle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0022] As Figures 1-5As shown, a heat meter with flow monitoring function, comprising a turbine flowmeter 1, turbine flowmeter 1 adopts special design of turbine structure, turbine blade is made of wear-resistant, corrosion-resistant material, can rotate stably under high-speed water flow impact, turbine flowmeter is provided with a high-precision magneto electric sensor for detecting turbine position, when the turbine rotates, the magneto electric sensor senses the magnetic field change and generates corresponding electric pulse signal, the frequency of pulse signal is proportional to the water flow velocity, so as to calculate the water flow by measuring the pulse signal frequency, turbine flowmeter 1 is connected with water inlet pipe 3 and water outlet pipe 4 through detachable connection respectively, one end of water inlet pipe 3, water outlet pipe 4 away from turbine flowmeter 1 is fixed with connecting flange 5, which is convenient for connecting and installing with heating pipeline, and sealing gasket is arranged at the connecting flange 5 connection, to ensure the sealing of the connection, prevent water leakage, turbine flowmeter 1 is fixed with meter body shell 2 through detachable connection, meter body shell 2 is made of corrosion-resistant, high-strength metal material, has good sealing performance, can effectively prevent internal electronic components from being damaged by moisture, meter body shell 2 is detachable structure, through special buckle or screw connection mode, it is convenient for regular maintenance and repair of internal parts, microprocessor 10 electrically connected with magneto electric sensor of turbine flowmeter 1 is fixed in meter body shell 2, microprocessor 10 selects 87C51 chip, display 6 and operation button 7 are embedded on the surface of meter body shell 2, display 6 is used for directly displaying heat, flow and other measurement data and equipment state information, operation button 7 can be used for parameter setting and function operation of heat meter, such as viewing historical data, setting communication parameters, etc., maintenance indicator light is also arranged on meter body shell 2, when the heat meter appears fault, maintenance indicator light lights up, prompting staff to repair in time, ultrasonic flow sensor 14 is fixed on water inlet pipe 3 and water outlet pipe 4, ultrasonic flow sensor 14 is model BLH800, ultrasonic flow sensor 14 measures fluid velocity by using time difference or frequency difference of ultrasonic wave propagation in fluid, and then calculates flow, this double sensor design can improve the accuracy and reliability of flow measurement, and when turbine flowmeter 1 fails, ultrasonic flow sensor 14 can still work, to ensure that the basic flow monitoring function of heat meter is not affected, one temperature sensor 12 is fixed on one end of water inlet pipe 3 and water outlet pipe 4 close to turbine flowmeter 1 respectively, temperature sensor 12 selects digital temperature sensing chip T117, which is used to detect inlet water temperature and outlet water temperature, display 6, operation button 7, temperature sensor 12, ultrasonic flow sensor 14 and microprocessor 10 are electrically connected, microprocessor 10 receives flow data from turbine flowmeter 1 and ultrasonic flow sensor 14, and is also connected with temperature sensor 12 for collecting inlet water temperature and outlet water temperature, microprocessor 10 calculates heat consumption value according to flow data and temperature difference according to specific heat calculation formula, microprocessor 10 can quickly and accurately process a large amount of data, and has data storage and transmission function,The calculation result can be stored in the internal memory, and the data is transmitted to the external monitoring system or billing system through the wireless communication module (such as Bluetooth, Wi-Fi or ZigBee) or wired communication interface (such as RS485), and the power module 9 for supplying power to the electric energy meter, the power module 9 can be powered by an external power adapter or a built-in rechargeable battery, the power module 9 also has a power management function, which can monitor the battery power, and give an alarm when the battery power is low, and can automatically switch to battery power mode when the external power is off, to ensure the uninterrupted operation of the heat meter.

[0023] In this embodiment, the water inlet pipe 3 is fixed with a filter cover 8 away from the turbine flowmeter 1, and the mesh diameter of the filter cover 8 is 3-5mm, which can prevent large particles from entering the sensor and causing damage, and will not affect the measurement accuracy due to excessive resistance to fluid flow.

[0024] In this embodiment, in order to solve the problem of flow sensor blockage caused by complex water quality, a flushing nozzle 15 is fixed in the water inlet pipe 3 and the water outlet pipe 4 near the ultrasonic flow sensor 14, the water outlet end of the flushing nozzle 15 is arranged towards the probe of the ultrasonic flow sensor 14, the flushing nozzle 15 is connected with the electric water pump 11 through the flushing pipe 13, the electric water pump 11 is fixed in the operation button 7, and the electric water pump 11 is electrically connected with the power module 9 and the microprocessor 10, the water inlet end of the electric water pump 11 is connected to the inside of the turbine flowmeter 1, and the flushing nozzle 15 is also fixed on the inner wall of the turbine flowmeter 1 and communicates with the electric water pump 11, the electric water pump 11 can pump part of the fluid in the meter body and pressurize it, then spray it to the surface of the turbine flowmeter 1 and the ultrasonic flow sensor 14 through the flushing nozzle 15, so as to flush away the impurities attached to the surface of the sensor, and the electric water pump 11 can be automatically started according to the preset time interval or according to the working state of the flow sensor, to ensure that the flow sensor is always in good working condition.

[0025] Assembly method: during installation, first, install the temperature sensor 12 and the ultrasonic flow sensor 14 in the specified position inside the water inlet pipe 3 and the water outlet pipe 4, and connect the corresponding signal lines and pipe connection parts, then install the electric water pump 11 and the flushing nozzle 15 in the appropriate position, ensure that the flushing nozzle 15 can effectively cover the surface of the turbine flowmeter 1 and the ultrasonic flow sensor 14, and connect the flushing pipe 13, then install the microprocessor 10 inside the meter body shell 2, and electrically connect it with the turbine flowmeter 1, the ultrasonic flow sensor 14 and the temperature sensor 12, then install the power module 9 in the meter body shell 2, and connect the power line to supply power to each electronic component, finally, install the filter cover 8 outside the water inlet pipe 3, and install the display 6 and the operation button 7 on the surface of the meter body shell 2, to complete the assembly of the heat meter.

[0026] Working principle: when installing, connect the inlet pipe 3 and outlet pipe 4 of the heat meter with the heating pipe through the pipe flange 5, and ensure that the connection is sealed well, after the connection is completed, the power is turned on, the heat meter starts initialization and self-checking, after the self-checking is passed, the heat meter can work normally, and the flow and heat consumption are monitored in real time. When the heating medium (such as water) flows into the heat meter from the inlet pipe 3 and passes through the turbine flowmeter 1, the turbine is pushed to rotate, the rotation of the turbine drives the magneto- electric sensor to generate a pulse signal, the pulse signal is received by the microprocessor 10 and converted into flow data, at the same time, the ultrasonic flow sensor 14 also measures the flow velocity of the fluid by using the ultrasonic wave principle and transmits the flow data to the microprocessor 10, the microprocessor 10 comprehensively analyzes and processes the flow data transmitted by the turbine flowmeter 1 and the ultrasonic flow sensor 14, and obtains an accurate flow value, the temperature sensor 12 located at the inlet pipe 3 and the outlet pipe 4 collects the inlet water temperature and the outlet water temperature in real time, and transmits the temperature data to the microprocessor 10, the microprocessor 10 calculates the heat consumption value according to the flow data and the temperature difference according to the heat calculation formula, and displays the heat, flow and other data through the display 6, and the data can be transmitted to the external system through the wireless communication module or the wired communication interface, in the process of running of the heat meter, the electric water pump 11 is automatically started according to the preset time interval or the working state of the flow sensor, fluid is pumped out and washed through the flushing nozzle 15 to clean the turbine flowmeter 1 and the ultrasonic flow sensor 14, so that the sensor is prevented from being blocked by impurities.

[0027] The circuit connection is a common means adopted by those skilled in the art, and technical inspiration can be obtained through limited tests, and belongs to the prior art widely used.

[0028] The components not described in detail in the present application are prior art.

[0029] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat meter with flow monitoring functionality, characterized in that: The utility model provides a kind of electric energy meter, including turbine flowmeter (1), the inlet pipe (3) and outlet pipe (4) are connected respectively by detachable connection at both ends of turbine flowmeter (1), the inlet pipe (3), the outlet pipe (4) are fixed with the connecting flange (5) at the end away from turbine flowmeter (1), the meter body shell (2) is fixed by detachable connection on turbine flowmeter (1), microprocessor (10) is fixed in the meter body shell (2) and is electrically connected with the magnetoelectric sensor of turbine flowmeter (1), display (6) and operating button (7) are inlaid on the surface of meter body shell (2), ultrasonic flow sensor (14) is fixed on the inlet pipe (3), the outlet pipe (4), temperature sensor (12) is fixed on the end close to turbine flowmeter (1) of the inlet pipe (3), the outlet pipe (4), display (6), operating button (7), temperature sensor (12), ultrasonic flow sensor (14) are electrically connected with microprocessor (10), and it further include the power module (9) for the power supply of electric energy meter.

2. The heat meter with flow monitoring function according to claim 1, characterized in that: The inlet pipe (3) is fixed with a filter cover (8) at the end away from the turbine flowmeter (1).

3. The heat meter with flow monitoring function according to claim 1, characterized in that: The inlet pipe (3), the outlet pipe (4) are fixed with flush sprayer (15) in the position close to ultrasonic flow sensor (14), the flush sprayer (15) is arranged towards the probe of ultrasonic flow sensor (14) at the water outlet end, the flush sprayer (15) is connected with electric water pump (11) by flush pipe (13), the electric water pump (11) is fixed in the operating button (7), the electric water pump (11) is electrically connected with the power module (9), the microprocessor (10), the water inlet end of the electric water pump (11) is connected to the inside of turbine flowmeter (1).

4. The heat meter with flow monitoring function according to claim 3, characterized in that: The flush sprayer (15) is also fixed on the inner wall of the turbine flowmeter (1) and communicates with the electric water pump (11).

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