JPH0368824A - Measuring apparatus for surface temperature of piping and the like - Google Patents

Abstract

PURPOSE:To make it possible to measure the temperature of fluid and the like in a pipe and to perform remote monitoring of the temperature by attaching the housing of a sensor to the pipe and the like, and guiding the color change of a temperature indicating material based on the temperature change in the surfaces of the pipe and the like into a color recognizing photodetector. CONSTITUTION:A temperature indicating material 9 is stuck to the surfaces of a pipe and the like. A housing 8 of a sensor part is attached to the pipe so as to surround the material 9. Optical fibers 3 and 4 for lighting and light receiving are inserted into a flexible tube 5. The tip part of the flexible tube 5 is inserted into the housing 8. The color change of the temperature indicating material 9 based on the surface temperature change of the pipe and the like is guided into a color recognizing photodetector 15 through the fiber 4. The recognized signal from the photodetector 15 is operated (12). The signals are displayed (14) or printed out (13) as color data. Such a constitution is provided. Part of the reflected colored light from the temperature indicating material 9 is guided by way of a half mirror 7 and a light receiving optical fiber 42. The light is guided into a color display part 6 directly in the unprocessed state. The color change can be visually observed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for measuring the surface temperature of piping, etc., and in particular, a device for measuring the surface temperature of piping, etc. at multiple locations on the surface of piping and tanks in plants in chemical factories, oil storage facilities, etc. The purpose is to measure the temperature of the fluid inside the piping or tank by measuring the surface temperature and processing it for safety management purposes.

[Conventional technology]

Conventionally, there are thermocouple thermometers and resistance thermometers that utilize electrical properties, optical pyrometers and radiation thermometers that utilize thermal radiation, and liquid thermometers that utilize the expansion of objects. Enclosed glass thermometers, bimetallic and metal thermometers, etc. are widely used.

[Problem to be solved by the invention]

With conventional thermometers such as those mentioned above, it is necessary to install a large amount of equipment in order to measure the temperature distribution at many locations, especially during storage or transfer of flammable fluids, etc., and to observe them remotely. I had to.

Additionally, there were installation restrictions for these temperature measurements.

[Means to solve the problem]

The present invention has functions not found in conventional thermometers as described above, and can safely and easily measure the temperature distribution of flammable fluids, etc. during storage or transfer. It is a flexible measuring device in which a temperature indicating material is pasted on the surface of a pipe, etc., a sensor housing is attached to the pipe surrounding the temperature indicating material, and an optical fiber for illumination and an optical fiber for light reception can be inserted into the sensor housing. Insert the tip of the tube, guide the color change of the temperature indicating material based on the change in surface temperature of the pipe, etc. to the color identification light receiving element via the light receiving optical fiber, and calculate the identification No. 43 of the color identification light receiving element. It is characterized in that it is configured to be processed and displayed as color data or printed out, and a portion of the reflected colored light from the temperature indicating material guided by the light-receiving optical fiber is directly displayed without being processed. It is characterized by being configured so that it can be visually observed by guiding light into the pipe, and is also configured so that sensor sections are provided at multiple locations in the piping, etc., so that temperature measurements at multiple locations of the fluid within the piping can be observed remotely. This is a surface temperature measurement device for piping, etc., which is characterized by:

〔Example〕

Hereinafter, the present invention will be described in detail based on the drawings.

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of the main part of the apparatus for measuring surface temperature of piping, etc. according to the present invention, and FIG. 2 is an enlarged sectional view of the sensor section.

A plurality of temperature indicating materials 9 are attached to the surface of the pipe 10 etc. at necessary locations, and a sensor housing 8 is attached to the pipe 10 etc. as shown in the figure, surrounding the temperature indicating materials 9. The tip of a flexible tube 5 through which the illumination optical fiber 3 and the light receiving optical fiber 4 can be inserted is inserted into the sensor housing 8 . As the temperature indicating material 9, a known temperature indicating material made of a chemical substance that changes color depending on a change in temperature can be used.

The light beam emitted from the light source 1) in the device main body 1 passes through the illumination optical fiber 3 and irradiates the surface of the temperature indicating material 9 from the projection section 31, and the reflected light passes through the incident section 41 and passes through the light receiving optical fiber 4. The light is guided to the color identification light receiving element 15, and the identification signal of the color identification light receiving element 15 is sent to the arithmetic processing unit 1.
2, the data is arithmetic-processed and displayed on the display unit 14 as color data, and can also be output to the printer 13. In addition, by branching a part of the light-receiving optical fiber 4 or changing the optical path through a half mirror 7, a part of the reflected colored light from the temperature indicating material 9 guided by the light-receiving optical fiber 4 can be removed. The light is guided by a light-receiving optical fiber 42 and directly guided to the color display section 6 without being processed, so that color changes can be visually observed.

Therefore, if the color display section 6 is formed by arranging display points such as piping diagrams so that the positions of the plurality of sensor sections 2 can be displayed, it is possible to clearly observe the location of temperature abnormality.

[Effect]

Since the present invention has the above-described configuration, it has functions not found in conventional thermometers, and is particularly capable of measuring surface temperatures at multiple locations on the surface of piping and tanks in plants in chemical factories, oil storage facilities, etc. The temperature of the fluid in the piping and tank can be measured by calculating and processing the temperature, and the display on the piping diagram can visually detect temperature abnormalities, etc., and can clearly locate problem areas remotely. This has the advantage that it can be used for safety control at chemical factories, etc.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of the main parts of the device for measuring the surface temperature of piping, etc. according to the present invention, and FIG. 2 is an enlarged cross-section of the sensor section. It is a diagram. 1. Apparatus body 1), light source 12, arithmetic processing section 13, printer 14, display section 15, color identification light receiving element 2. Sensor part 3, optical fiber for illumination 31, projection part 4, optical fiber for light reception 41, incidence part 42, optical fiber for light reception 5, flexible tube 6, color display part 7, half mirror 8, sensor part housing 9, temperature indicating material 10, Piping

Claims (3)

[Claims] (1) A temperature-indicating material is pasted on the surface of a pipe, etc., a sensor housing is attached to the pipe surrounding the temperature-indicating material, and a flexible tube is formed into which an optical fiber for illumination and an optical fiber for light reception can be inserted into the sensor housing. The tip is inserted, and the color change of the temperature indicating material based on the change in the surface temperature of the pipe is guided to the color identification light receiving element via the light receiving optical fiber, and the identification signal of the color identification light receiving element is processed. A surface temperature measuring device for piping, etc., characterized in that it is configured to display or print out color data. (2) A patent claim characterized in that a portion of the reflected colored light from the temperature indicating material guided by the light-receiving optical fiber is directly guided to the display part without being processed so that it can be visually observed. Device for measuring surface temperature of piping, etc. described in scope item (1) (3) A configuration is described in claim (1), characterized in that a pipe or the like is provided with sensor units at a plurality of locations so that the temperature measurement at a plurality of locations of the fluid within the pipe can be observed remotely. A device for measuring the surface temperature of piping, etc.