阅读说明：本技术 一种用于双波纹管差压计的电子驱动装置 (Electronic driving device for double-bellows differential pressure gauge ) 是由 杜青山 杨宁 邱述红 廖玉辉 胡银波 胡辉 杨翠芳 蔡小红 龙英 刘昶 余惠莉 于 2018-06-25 设计创作，主要内容包括：本发明公开了一种用于双波纹管差压计的电子驱动装置,包括：电源模块、脉冲信号发生器、波形调制器和电子分频器；脉冲信号发生器用于产生脉冲信号,并将该脉冲信号传输至所述波形调制器；波形调制器用于对脉冲信号进行调制,并将调制后的脉冲信号传输至电子分频器；电子分频器经过分频后得到相应频率的脉冲信号；电源模块为步进电动机的驱动模块提供电源,该驱动模块根据电子分频器传输的脉冲信号驱动步进电动机转动。从而提高双波纹管差压计的计量精度,减少因采用机械驱动方式而对双波纹管差压计造成的卡死损坏的情形。(The invention discloses an electronic driving device for a double-bellows differential pressure gauge, which comprises: the device comprises a power supply module, a pulse signal generator, a waveform modulator and an electronic frequency divider; the pulse signal generator is used for generating a pulse signal and transmitting the pulse signal to the waveform modulator; the waveform modulator is used for modulating the pulse signal and transmitting the modulated pulse signal to the electronic frequency divider; the electronic frequency divider obtains a pulse signal with corresponding frequency after frequency division; the power module provides power for a driving module of the stepping motor, and the driving module drives the stepping motor to rotate according to the pulse signals transmitted by the electronic frequency divider. Therefore, the metering precision of the double-bellows differential pressure gauge is improved, and the situation of clamping damage to the double-bellows differential pressure gauge due to the adoption of a mechanical driving mode is reduced.)

1. An electronic drive for a dual bellows differential pressure gauge, comprising: the device comprises a power supply module, a pulse signal generator, a waveform modulator, an electronic frequency divider and a stepping motor; the pulse signal generator is used for generating a pulse signal and transmitting the pulse signal to the waveform modulator; the waveform modulator is used for modulating the pulse signal and transmitting the modulated pulse signal to the electronic frequency divider; the electronic frequency divider obtains a pulse signal with corresponding frequency after frequency division; the power module provides power for a driving module of the stepping motor, and the driving module drives the stepping motor to rotate according to the pulse signals transmitted by the electronic frequency divider.

2. The electronic driver for a dual bellows differential pressure gauge as claimed in claim 1, wherein the power module is a lithium battery.

3. The electronic driving device for a dual bellows differential pressure gauge as claimed in any of claims 2, further comprising a charge detection chip for detecting a remaining charge of the power supply module.

4. The electronic driving device for a dual bellows differential pressure gauge as claimed in claim 3, further comprising a display device for displaying the current charge value of the power module obtained by the charge detection chip.

5. The electronic driving device for a dual bellows differential pressure gauge as claimed in claim 3, further comprising an alarm module, through which an alarm is given when the charge detection chip detects that the current charge value of the power supply module is lower than a threshold value.

6. The electronic driver for a dual bellows differential pressure gauge as claimed in claim 5, wherein the power module provides power to the pulse signal generator, the electronic frequency divider, the waveform modulator, the alarm module and the display device.

7. The electronic driver for a dual bellows differential pressure gauge as claimed in claim 6, wherein the power module, the pulse signal generator, the electronic frequency divider, the waveform modulator, the stepper motor, the alarm module and the display device are integrally mounted on a PCB board.

8. A dual bellows differential pressure gauge comprising an electronic drive as claimed in any of claims 1-7.

Technical Field

The invention relates to an electronic driving device, in particular to an electronic driving device for a double-bellows differential pressure gauge.

Background

In the field of oil and gas exploitation, the CWD type corrugated pipe differential pressure gauge has the advantages of simple structure, low price, reliable use, difficult damage and the like, and is still widely adopted by the departments of petroleum, chemical industry, metallurgy, electric power, light industry and the like. At present, a card driving device of a CWD type corrugated pipe differential pressure meter is driven by a mechanical clock rotation mode, and a clock is wound by 1-2 circles every day when the card driving device is used, so that the clock is often locked and damaged due to excessive winding, or the card driving device stops rotating due to forgetting winding, and the metering error is increased.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned deficiencies in the prior art and providing an electronic drive for a dual bellows differential pressure gauge.

In order to achieve the above purpose, the invention provides the following technical scheme: the invention relates to an electronic driving device for a double-bellows differential pressure gauge, which comprises a power module, a pulse signal generator, a waveform modulator, an electronic frequency divider and a stepping motor; the pulse signal generator is used for generating a pulse signal and transmitting the pulse signal to the waveform modulator; the waveform modulator is used for modulating the pulse signal and transmitting the modulated pulse signal to the electronic frequency divider; the electronic frequency divider obtains a pulse signal with corresponding frequency after frequency division; the power module provides power for a driving module of the stepping motor, and the driving module drives the stepping motor to rotate according to the pulse signals transmitted by the electronic frequency divider.

Preferably, the power module is a lithium battery.

Preferably, the power supply module further comprises an electric quantity detection chip, and the electric quantity detection chip is used for detecting the residual electric quantity of the power supply module.

Preferably, the power supply module further comprises a display device, and the display device is used for displaying the current electric quantity value of the power supply module obtained by the electric quantity detection chip.

Preferably, the power supply module further comprises an alarm module, and when the electric quantity detection chip detects that the current electric quantity value of the power supply module is lower than a threshold value, the alarm module gives an alarm.

Preferably, the power module provides power for the pulse signal generator, the electronic frequency divider, the waveform modulator, the alarm module and the display device.

Preferably, the power module, the pulse signal generator, the electronic frequency divider, the waveform modulator, the stepping motor, the alarm module and the display device are integrally mounted on a PCB.

A dual bellows differential pressure gauge includes above-mentioned electronic drive arrangement.

Compared with the prior art, the invention has the beneficial effects that: the present invention employs an electronic drive device for a dual bellows differential pressure gauge, comprising: the device comprises a power supply module, a pulse signal generator, a waveform modulator, an electronic frequency divider and a stepping motor; the pulse signal generator is used for generating a pulse signal and transmitting the pulse signal to the waveform modulator; the waveform modulator is used for modulating the pulse signal and transmitting the modulated pulse signal to the electronic frequency divider; the electronic frequency divider obtains a pulse signal with corresponding frequency after frequency division; the power module provides power for a driving module of the stepping motor, and the driving module drives the stepping motor to rotate according to the pulse signals transmitted by the electronic frequency divider. Therefore, the metering precision of the double-bellows differential pressure gauge is improved, and the situation of clamping damage to the double-bellows differential pressure gauge due to the adoption of a mechanical driving mode is reduced.

Drawings

FIG. 1 is a block diagram of an electronic drive for a dual bellows differential pressure gauge;

fig. 2 is a block diagram of the structure of the electric quantity detection.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

A CWD type double-corrugated-pipe differential pressure gauge is a fixedly installed differential pressure gauge. The flow meter is usually used in industrial process detection systems of petroleum, chemical industry, metallurgy, power stations, textile and the like, is matched with a throttling device to measure the flow of liquid, gas and steam, and can also measure differential pressure, gauge pressure (positive pressure or negative pressure) and the liquid level of an open container or a pressurized container. The used driving mode is mechanical driving, after the clockwork spring is wound, the clockwork spring has elastic potential energy, the energy is released through the rotation of the central shaft, the central shaft is connected with a gear, and the gear can be meshed with other gear sets to rotate so as to achieve the purpose of driving.