CN209014066U - One kind being based on TDC-GP30 double-channel gas ultrasonic flowmeter - Google Patents

Abstract

One kind being based on TDC-GP30 double-channel gas ultrasonic flowmeter, the energy converter A0 and energy converter A1 and energy converter B0 and energy converter B1 of pairing are bi-directionally connected with electronic switch respectively, electronic switch is connect by receiving module with time chip, time chip is connect by transmitting module with electronic switch, temperature sensor is connect with time chip, pressure sensor is connect by pressure detecting module with single-chip microprocessor MCU, single-chip microprocessor MCU is bi-directionally connected with time chip, pin-saving chip, WIFI communication module and button display panel respectively, and remote power feeding provides single-chip microprocessor MCU power supply.Energy converter A0 and energy converter A1 is symmetrically inserted on pipeline in two probe sockets I, and energy converter B0 and energy converter B1 are symmetrically inserted on pipeline 1 in probe socket II.Using the instantaneous flow of medium in two-channel transducer measurement pipe road, can greatly reduce as fluids within pipes are unevenly distributed and caused by measurement error, improve the precision of flow measurement.

Description

One kind being based on TDC-GP30 double-channel gas ultrasonic flowmeter

Technical field

The utility model relates to a kind of Ultrasonic Wave Flowmeters, in particular to a kind of to be based on TDC-GP30 double-channel gas Ultrasonic flowmeter is measured for gas flow measurement and gaseous mass.

Background technique

Ultrasonic Wave Flowmeter is the measurement instrument for measuring gas flow rate, quality, be can be widely applied to natural Process control metering and trade settlement metering in the links such as gas exploitation, long distance transmission and trade settlement.Currently on the market The Ultrasonic Wave Flowmeter used generallys use monophonic ultrasonic transducer, can not accurately reflect pipeline flow field point Cloth causes precision not high, and especially at low flow rates, measuring accuracy is unable to satisfy the needs of trade settlement.

Summary of the invention

In view of the problems of prior art, the utility model provides a kind of super based on TDC-GP30 double-channel gas Acoustic wave flow meter, the Ultrasonic Wave Flowmeter are improved using high performance time chip TDC-GP30 and two-channel energy converter The precision of flow measurement；Battery life is extended by the way of remote power feeding, simultaneous with temperature and pressure compensation, radio remote Pass communication function.

The utility model to achieve the above object, the technical solution adopted is that: one kind be based on TDC-GP30 double-channel gas Ultrasonic flowmeter, including pipeline, it is characterised in that: the double-channel gas ultrasonic flowmeter includes that two-way pairing is changed It can device A0 and energy converter A1, energy converter B0 and energy converter B1 and electronic switch, transmitting module, receiving module, temperature sensor, pressure Force snesor, time chip, pressure detecting module, single-chip microprocessor MCU, pin-saving chip, WIFI communication module, remote power feeding, Button display panel；

The energy converter A0 and energy converter A1 and energy converter B0 and energy converter B1 of the two-way pairing are double with electronic switch respectively To connection, electronic switch is connect by the receiving module with time chip, and time chip passes through transmitting module and electronic switch Connection, the temperature sensor are connect with time chip, and the pressure sensor is connected by pressure detecting module and single-chip microprocessor MCU It connecing, the single-chip microprocessor MCU is bi-directionally connected with time chip, pin-saving chip, WIFI communication module and button display panel respectively, Remote power feeding provides single-chip microprocessor MCU power supply.

The energy converter A0 and energy converter A1 is symmetrically inserted into two probe sockets I being arranged on pipeline, described to change Energy device B0 and energy converter B1 is symmetrically inserted into the probe socket II being arranged on pipeline 1；

The model of time chip are as follows: TDC-GP30, the model of single-chip microprocessor MCU are as follows: msp430F448.

The technical effect of the utility model is: being improved using high-performance TDC-GP30 time chip and two-channel energy converter The precision of flow measurement.

Battery life is extended by the way of remote power feeding, is communicated simultaneous with temperature and pressure compensation, wireless remote transmission Function has certain engineering value and good application prospect.

Using the instantaneous flow of medium in two-channel transducer measurement pipe road, can greatly reduce due to fluids within pipes Be unevenly distributed and caused by measurement error, improve the precision of flow measurement；The temperature and pressure in pipeline is measured, can be monitored each The pressure of grade pipe network, avoids pipeline gas leakage or artificial destruction；WIFI communication can carry out wireless signal transmission, once it lets out Leakage, can timely feedback and give higher level supervision department, report for repairment in time, be safeguarded.

The utility model is at low cost, small in size, and no throttling original part improves the flow measurement precision under low flow velocity, improves The range ratio of instrument, extends the lower limit of flow measurement, extends battery life, realizes data communication and instrument alarm function Can, to reduce cost of labor, and avoid due to pipeline gas leakage and also caused by loss.

Detailed description of the invention

Fig. 1 is that the system of the utility model connects block diagram；

Fig. 2 is that the schematic diagram on pipeline is arranged in the utility model energy converter.

Specific embodiment

It is described further below with reference to example.

As shown in Figure 1 and Figure 2, a kind of to be based on TDC-GP30 double-channel gas ultrasonic flowmeter, including pipeline 1, binary channels Ultrasonic Wave Flowmeter includes the energy converter A0 and energy converter A1, energy converter B0 and energy converter B1 and electronic cutting of two-way pairing Pass, transmitting module, receiving module, temperature sensor, pressure sensor, time chip, pressure detecting module, single-chip microprocessor MCU, number According to storage chip, WIFI communication module, remote power feeding, button display panel.

Two-way pairing energy converter A0 and energy converter A1 and energy converter B0 and energy converter B1 respectively with the two-way company of electronic switch It connecing, electronic switch is connect by the receiving module with time chip, and time chip is connect by transmitting module with electronic switch, Temperature sensor is connect with time chip, and pressure sensor is connect by pressure detecting module with single-chip microprocessor MCU, single-chip microprocessor MCU It is bi-directionally connected respectively with time chip, pin-saving chip, WIFI communication module and button display panel, remote power feeding provides monolithic Machine MCU power supply.

Energy converter A0 and energy converter A1 is symmetrically inserted into two I 1-1 of probe socket being welded on pipeline 1, energy converter B0 and energy converter B1 is symmetrically inserted into the probe socket II (1-2) being welded on pipeline 1.

The model of time chip are as follows: TDC-GP30, the model of single-chip microprocessor MCU are as follows: msp430F448.

Two I 1-1 of probe socket and II 1-2 of probe socket are respectively 45 ° with the level angle of pipeline 1.

A kind of application method based on TDC-GP30 double-channel gas ultrasonic flowmeter, steps are as follows: by binary channels gas The energy converter A0 and energy converter A1 of body ultrasonic flowmeter pairing are symmetrically inserted on pipeline 1 in two I 1-1 of probe socket, will Energy converter B0 and energy converter B1 is symmetrically inserted on pipeline 1 in II 1-2 of probe socket；

The first step gates energy converter A0 and energy converter A1 by electronic switch, and time chip passes through transmitting module and electronics Switch emits pulse to the energy converter A0 and energy converter A1 of gating, and the echo-signal of ultrasonic flow passes through electronic switch and reception Module returns to time chip, using the acquisition and calculating of time chip；

The working principle of ultrasonic flowmeter is to be influenced by the flow velocity in pipeline the propagation time of ultrasonic wave in the duct, The adverse current propagation time is longer than downstream propagation times, and propagation time difference is directly proportional to flow velocity, and calculation formula is as follows:

Wherein:

L- propagation distance；

θ-fluids within pipes flow direction and sound channel angle；

V- instantaneous velocity；

T_upThe ultrasonic wave adverse current propagation time；

T_downUltrasonic wave downstream propagation times；

Δ T=T_up-T_down。

For example, L is 6.8 millimeters, θ is 45 °, and cos θ is 0.707, T_upFor 180.83 μ s, T_downFor 186.02 μ s, Δ T is 5.19 μ s, bring above-mentioned formula into, calculate the instantaneous velocity V of channel A0-A1_AIt is 7.4m/s.

Then by calculated result instantaneous velocity V_AIt passes to single-chip microprocessor MCU and carries out data preservation.

Second step gates energy converter B0 and energy converter B1 by electronic switch, after gating energy converter B0 and energy converter B1, when Between chip energy converter B0 and energy converter B1 of the pulse to gating, time of ultrasonic flow emitted by transmitting module and electronic switch Wave signal returns to time chip by electronic switch and receiving module, using the acquisition and calculating of time chip.It will calculate As a result the instantaneous velocity V of channel B0-B1_BIt passes to single-chip microprocessor MCU and carries out data preservation.

Third step, time chip have been internally integrated the device of measurement temperature, have passed through temperature sensor real-time measurement pipeline Measurement result is passed to single-chip microprocessor MCU by I2C bus communication by medium temperature, time chip, and single-chip microprocessor MCU is mended by temperature It repays formula and calculates instantaneous velocity；

Temperature-compensating formula:

V- instantaneous velocity；

V₀Medium temperature is 15 DEG C of standard instantaneous velocities for being；

V₁Medium temperature is 60 DEG C of standard instantaneous velocities for being；

T₀- 15 DEG C；

T₁- 60 DEG C；

T- current media temperature

For example, when T is 25 DEG C, V₀For 7.32m/s, V₁It is 7.41m/s for 7.75m/s, compensated instantaneous velocity V.

4th step, single-chip microprocessor MCU are analyzed and processed the instantaneous flow in two channels, calculate volume flow,

D- pipeline interior diameter；

V_AThe instantaneous velocity in the channel-A0-A1；

V_BThe instantaneous velocity in the channel-B0-B1；

Q- volume flow；

For example, when D is 100 millimeters, V_A、V_BRespectively 7.41m/s and 7.40m/s, calculated volume flow Q are 209.27m³/h。

5th step, pressure sensor first convert electric signal for the pressure signal in pipeline, integrated inside single-chip microprocessor MCU AD carries out pressure acquisition, then converts electrical signals to digital signal, is calculated by single-chip microprocessor MCU, calculation formula are as follows:

The current manifold pressure of P-；

P₀The pressure sensor range upper limit；

A₀The data upper limit that AD is acquired in single-chip microcontroller；

The current data that AD is acquired in A- single-chip microcontroller；

For example, the alarm pressure value set is 1.6MP, the AD acquisition data upper limit is 5000 in single-chip microcontroller, corresponding pressure The transducer range upper limit is 1MP, and current collected data are 2500, then, pipeline pressure value P is calculated according to formula above For 0.5MP.It is compared with pipeline pressure value 0.5MP with the alarm pressure value 1.6MP of setting.Pipeline pressure is no more than alarm pressure Power, belongs to normal measurement result, and single-chip microprocessor MCU stores pipeline pressure 0.5MP into pin-saving chip.

6th step, single-chip microprocessor MCU pass through instantaneous flow, volume flow, temperature, pressure, the warning message after calculating WIFI communication module is transferred to monitoring system, so that user carries out implementing monitoring.Meanwhile single-chip microprocessor MCU is by instantaneous flow, volume Flow, temperature, pressure, warning message are shown by key, display board, so that user is read out.

Claims (2)

1. one kind is based on TDC-GP30 double-channel gas ultrasonic flowmeter, including pipeline (1), it is characterised in that: the bilateral Road Ultrasonic Wave Flowmeter includes the energy converter A0 and energy converter A1, energy converter B0 and energy converter B1 and electronics of two-way pairing Switch, transmitting module, receiving module, temperature sensor, pressure sensor, time chip, pressure detecting module, single-chip microprocessor MCU, Pin-saving chip, WIFI communication module, remote power feeding, button display panel；

The energy converter A0 and energy converter A1 and energy converter B0 and energy converter B1 of two-way pairing respectively with the two-way company of electronic switch It connecing, electronic switch is connect by the receiving module with time chip, and time chip is connect by transmitting module with electronic switch, The temperature sensor is connect with time chip, and the pressure sensor is connect by pressure detecting module with single-chip microprocessor MCU, institute It states single-chip microprocessor MCU to be bi-directionally connected with time chip, pin-saving chip, WIFI communication module and button display panel respectively, remotely Power supply provides single-chip microprocessor MCU power supply;

The energy converter A0 and energy converter A1 is symmetrically inserted into two probe sockets I (1-1) being arranged on pipeline (1), institute Energy converter B0 and energy converter B1 is stated symmetrically to be inserted into the probe socket II (1-2) being arranged on pipeline (1)；

The model of time chip are as follows: TDC-GP30, the model of single-chip microprocessor MCU are as follows: msp430F448.

2. according to claim 1 a kind of based on TDC-GP30 double-channel gas ultrasonic flowmeter, it is characterised in that: institute Stating two probe sockets I (1-1) and probe socket II (1-2) is respectively 45 ° with the level angle of pipeline (1).