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Integrated temperature and liquid level acquiring and transmitting device for regenerative heat exchange system

A technology of liquid level acquisition and heat exchange system, applied in measurement devices, instruments, etc., can solve problems such as difficult control, high cost, affecting measurement accuracy, etc., to improve communication speed, prolong service life, and slow down electrochemical corrosion. Effect

Active Publication Date: 2019-04-02
河北省机电一体化中试基地有限公司
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Problems solved by technology

[0002] The regenerative heat exchange system is mainly used in the heating industry. Since there are many points for measuring temperature and liquid level, most of the temperature and liquid level transmitters are single-channel or dual-channel measurement, which not only costs a lot , and it is more difficult to control, thus affecting the measurement accuracy

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  • Integrated temperature and liquid level acquiring and transmitting device for regenerative heat exchange system
  • Integrated temperature and liquid level acquiring and transmitting device for regenerative heat exchange system

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Embodiment Construction

[0029] The specific embodiment of the present invention is described in detail below with reference to accompanying drawing:

[0030] Such as figure 1 As shown, the integrated temperature and liquid level acquisition and transmission controller 101 provided in this embodiment includes MCU102, liquid level electrode acquisition and conditioning circuit 103, DC power input unit 104, RS485 communication unit 105, 10KNTC acquisition circuit 106, three-wire serial Line expansion bus interface 107; the DC power input unit 104 adopts DC8-30V wide voltage DC power supply, which has the characteristics of wide power supply range and high applicability.

[0031] Such as figure 2As shown, the regenerative heat exchange system temperature and liquid level integrated acquisition and transmission device provided in this embodiment is composed of one or more body-type temperature and liquid level acquisition and transmission controllers 101, and the electrode type liquid level acquisition ...

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Abstract

The invention relates to an integrated temperature and liquid level acquiring and transmitting device for a regenerative heat exchange system. The device comprises a multipath electrode type liquid level acquiring probe, a multi-way NTC 10K thermal resistance acquiring probe and an integrated temperature and liquid level acquiring and transmitting controller. The device is in communication with anupper computer system through an RS485 serial communication interface, and the communication protocol is a standard modbus_RTU protocol. When multiple integrated temperature and liquid level acquiring and transmitting controllers are required for a combination use, the integrated temperature and liquid level acquiring and transmitting controllers can realize a modularized cascading expansion of atransmitter through a three-wire serial expansion bus, so that the number of nodes mounted on an RS485 serial bus is reduced, and the acquisition rate is improved. The electrode type liquid level acquiring probe adopts an n + 1 acquisition working mode, so that the paralysis of a whole liquid level electrode detection system due to a failure of a common electrode in the traditional sense is avoided.

Description

technical field [0001] The invention relates to a temperature and liquid level acquisition and transmission device, in particular to an integrated temperature and liquid level acquisition and transmission device for a regenerative heat exchange system and its application. Background technique [0002] The regenerative heat exchange system is mainly used in the heating industry. Since there are many points for measuring temperature and liquid level, most of the temperature and liquid level transmitters are single-channel or dual-channel measurement, which not only costs a lot , and it is more difficult to control, thus affecting the measurement accuracy. Contents of the invention [0003] The purpose of the present invention is to solve the problem of many temperature and liquid level measurement points in the thermal storage system, and provide a temperature and liquid level integrated acquisition and transmission controller, which can ensure that one acquisition and trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 贾英新高林鹤靳晔秦亚敏庞增拴王勇
Owner 河北省机电一体化中试基地有限公司
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