Heat preservation method and device for flow transmitter

A technology of flow transmitter and insulation layer, which is applied in the field of precision instruments, can solve the problems of easy damage or failure of flow transmitter, and achieve the effects of avoiding damage or failure, improving life, and preventing wrong data from being detected

Pending Publication Date: 2022-04-12
ANHUI RUILING GAUGE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the flow transmitter of the existing turbine flowmeter is extremely easy to damage or fail when working at low temperature, the present invention provides a method and device for heat preservation of the flow transmitter

Method used

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  • Heat preservation method and device for flow transmitter
  • Heat preservation method and device for flow transmitter

Examples

Experimental program
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Effect test

Embodiment 1

[0051] see figure 1 and figure 2, This embodiment provides a heat preservation method for a flow transmitter, and the heat preservation method is applied to a low temperature resistant flow transmitter. Wherein, the flow transmitter can be used in a low temperature environment, especially in a liquid environment below -40 degrees Celsius. Of course, the flow transmitter can also be used in a normal temperature environment, which can meet various usage environments. In this embodiment, the low-temperature-resistant flow transmitter of this embodiment mainly includes a housing 1, a signal acquisition component 2, an insulating material 3, a heating sheet 4, a temperature control switch 5, a potting compound 6 and a Hossmann connector 7 .

[0052] The shell 1 is columnar, and its overall shape is similar to that of a measuring pen. The shell 1 is the main installation structure of the flow transmitter, and is used for installation of other structures. In this embodiment, th...

Embodiment 2

[0074] This embodiment provides a heat preservation method for the flow transmitter, which is refined on the basis of Embodiment 1. Wherein, the transmitter corresponding to the heat preservation method adds a temperature sensor and an alarm device on the basis of Embodiment 1. There is at least one temperature sensor, and the temperature sensor is installed in the shell 1 and used to detect the temperature of the insulation layer. In the heat preservation method, the temperature sensor detects the temperature of the heat preservation layer, and corresponds the temperature data of the heat preservation layer with time to form a temperature curve. The alarm device is used to send out an audible and visual alarm message when the temperature of the insulation layer is not within the preset temperature range for longer than a preset time, or when the temperature of the insulation layer is not within the preset temperature range for more than a preset number of times. Wherein, the...

Embodiment 3

[0077] This embodiment provides a turbine flowmeter, which can withstand a low temperature below -40 degrees and detect the flow of cryogenic liquid. In this embodiment, the turbine flowmeter includes the corresponding flow transmitter in Embodiment 1 or Embodiment 2, and may also include the structure of the existing turbine flowmeter.

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Abstract

The invention discloses a heat preservation method and device for a flow transmitter. The heat preservation method comprises the steps of forming a heat preservation layer; the heating sheet is inserted into the thermal insulation material; heating the thermal insulation material; detecting the temperature of the insulating layer; the temperature of the heat preservation layer reaches the preset temperature, and the heating piece is controlled to enable the temperature of the heat preservation layer to be constant within the preset temperature interval; the temperature data of the heat preservation layer correspond to time to form a temperature curve; forming a temperature-time change diagram; marking a preset temperature interval on the temperature-time change chart; counting the duration and times when the temperature of the thermal insulation layer is not in the preset temperature interval; performing comparison; and when the duration when the temperature of the thermal insulation layer is not in the preset temperature interval is greater than preset time or the frequency is greater than preset frequency, sound-light alarm information is sent out. The overall temperature of the flow transmitter is not too low, internal electronic elements are protected, the flow transmitter can be used in a low-temperature environment for a long time, and damage or failure of the flow transmitter is avoided.

Description

technical field [0001] The invention relates to a heat preservation method in the field of precision instruments, in particular to a heat preservation method of a flow transmitter, and also to a heat preservation device of the flow transmitter. Background technique [0002] The turbine flowmeter is the main type of velocity flowmeter. When the measured fluid flows through the turbine flowmeter sensor, under the action of the fluid, the impeller is forced to rotate, and its speed is proportional to the average flow velocity of the pipeline. At the same time, the blade period According to the principle of electromagnetic induction, a pulsating potential signal, that is, an electric pulse signal, will be induced in the coil. The frequency of this electric pulsation signal is proportional to the flow rate of the measured fluid. [0003] The flow transmitter, also known as the flow sensor, is a part of the turbine flowmeter. The flow transmitters of existing turbine flowmeters a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F15/10
Inventor 卜继兵段宏亮徐伶俐夏丹丹张月
Owner ANHUI RUILING GAUGE MFG CO LTD
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