CN218973671U

CN218973671U - Filter for distributed optical fiber temperature measurement system

Info

Publication number: CN218973671U
Application number: CN202222568867.XU
Authority: CN
Inventors: 王小红; 何智杰; 唐胜策; 林晓微
Original assignee: Architectural & Civil Engineering Design Institute Co ltd Hangzhou China
Current assignee: Architectural & Civil Engineering Design Institute Co ltd Hangzhou China
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-05-05
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a filter for a distributed optical fiber temperature measurement system, which relates to the technical field of distributed optical fiber temperature measurement, and particularly relates to a filter for a distributed optical fiber temperature measurement system. This distributed optical fiber is wave filter for temperature measurement system through setting up the cooling tube in the outside of wave filter, and the cooling tube can carry out the water-cooling to the wave filter to reduce the temperature of wave filter, make the wave filter be in the temperature of angle all the time, avoid the wave filter temperature to rise and lead to causing adverse effect to the optical fiber temperature measurement system, through set up the insulating jacket in the outside of cooling tube, the insulating jacket can wrap up cooling tube and wave filter completely, reduces the influence that produces when the wave filter generates heat.

Description

Filter for distributed optical fiber temperature measurement system

Technical Field

The utility model relates to the technical field of distributed optical fiber temperature measurement, in particular to a filter for a distributed optical fiber temperature measurement system.

Background

The distributed optical fiber temperature measuring system is a real-time, online and continuous temperature monitoring system. The system is developed based on a backward Raman (Raman) scattering principle and an Optical Time Domain Reflectometry (OTDR) positioning principle, has the functions of generating optical signals, performing spectral analysis, photoelectric conversion, amplifying and processing the signals and the like, adopts a special temperature sensing optical cable as a temperature sensor, can accurately measure the temperature of each position of the temperature sensing optical cable in the laying direction and position abnormal temperature points, and has good performance indexes and system stability.

In order to improve the temperature measurement precision of a temperature measurement system, a filter is arranged on the distributed optical fiber temperature measurement system to filter Rayleigh scattered light and anti-Stokes light scattered by backward Raman, in the prior art, when the filter removes redundant waveforms, waveform energy can be converted into heat energy, so that the filter heats, in the temperature measurement system, heat generated by the filter can adversely affect the temperature measurement system, and meanwhile, the stability of the work of other electrical elements in the temperature measurement system can be affected, such as reduction of the maximum output power of a laser, so that the filter for the distributed optical fiber temperature measurement system is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a filter for a distributed optical fiber temperature measurement system, which solves the problems in the prior art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a distributed optical fiber filter for temperature measurement system, includes the temperature measurement system casing, the internally mounted of temperature measurement system casing has the laser instrument, the right side of laser instrument is connected with the optical circulator, the side of optical circulator is connected with the filter, the outside of filter is provided with the cooling tube, the outside cladding of cooling tube has the insulation cover, there is circulating water pump left side through the pipe connection, circulating water pump's side is connected with the water storage tank, the internally mounted of temperature measurement system casing has the division board.

Optionally, the filter quantity has two, the cooling tube is the heliciform and distributes in the outside of two filters, the cooling tube is in the same place with the surface laminating of filter.

Optionally, the heat insulation sleeve comprises an aerogel felt and a vacuum plate, wherein the aerogel felt is positioned outside the vacuum plate and fixed inside the temperature measurement system shell, and the vacuum plate is wrapped outside the cooling pipe.

Optionally, the splitter plate and the temperature measurement system shell enclose a heat insulation chamber separated from the laser, and the circulating water pump and the water storage tank are both positioned in the heat insulation chamber.

Optionally, the input port of circulating water pump communicates with the insulating sleeve, the delivery outlet of circulating water pump communicates with the cooling tube, circulating water pump fixes on the temperature measurement system casing.

Optionally, the cooling tube is kept away from circulating water pump's one end and is connected with the heat dissipation water row, the heat dissipation water row is arranged in the heat-insulating chamber, radiator fan is installed in the left side of heat dissipation water row, the left side of temperature measurement system casing has been seted up and has been located the louvre of heat-insulating chamber side.

The utility model provides a filter for a distributed optical fiber temperature measurement system, which has the following beneficial effects:

1. this distributed optical fiber is wave filter for temperature measurement system through setting up the cooling tube in the outside of wave filter, and the cooling tube can carry out the water-cooling to the wave filter to reduce the temperature of wave filter, make the wave filter be in the temperature of angle all the time, avoid the wave filter temperature to rise and lead to causing adverse effect to the light temperature measurement system, through set up the insulating jacket in the outside of cooling tube, the insulating jacket can wrap up cooling tube and wave filter completely, make aerogel felt and vacuum board can insulate against heat wave filter and cooling tube, the influence that produces when further reducing the wave filter and generate heat.

2. This filter for distributed optical fiber temperature measurement system carries the cooling water in the water storage box to the cooling tube through circulating water pump, can make the cooling water cool down to the filter, and later the water in the cooling tube is carried to the heat dissipation water row, then utilizes radiator fan to the external blowing cooling to the heat dissipation water row, is convenient for make the cooling water cooling cyclic utilization.

Drawings

FIG. 1 is a schematic top view of the present utility model;

FIG. 2 is a schematic view of another angle of the present utility model;

FIG. 3 is a schematic view of a cooling tube according to the present utility model;

FIG. 4 is a schematic structural view of a sleeve according to the present utility model.

In the figure: 1. a temperature measurement system housing; 2. a laser; 3. an optical circulator; 4. a filter; 5. a cooling tube; 6. a heat insulating sleeve; 61. aerogel blanket; 62. a vacuum plate; 7. a circulating water pump; 8. a water storage tank; 9. a heat dissipating water drain; 10. a heat radiation fan; 11. a heat radiation hole; 12. a partition plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a distributed optical fiber filter for temperature measurement system, including temperature measurement system casing 1, temperature measurement system casing 1's internally mounted has laser instrument 2, laser instrument 2's right side is connected with optical circulator 3, optical circulator 3's side is connected with wave filter 4, wave filter 4's outside is provided with cooling tube 5, through set up cooling tube 5 in wave filter 4's outside, cooling tube 5 can carry out the water-cooling to wave filter 4, thereby reduce wave filter 4's temperature, make wave filter 4 be in the temperature of angle all the time, avoid wave filter 4 temperature rise to lead to causing adverse effect to the optical fiber temperature measurement system, filter 4 quantity has two, cooling tube 5 is the outside of heliciform distribution at two wave filter 4, cooling tube 5 is in the same place with wave filter 4's surface laminating, cooling tube 5's outside cladding has insulating sleeve 6, through set up insulating sleeve 6 in cooling tube 5's outside, insulating sleeve 6 can be with cooling tube 5 and wave filter 4 completely, the influence that produces when reducing wave filter 4 generates heat, insulating sleeve 6 includes aerogel 61, vacuum plate 62, aerogel 61 is located outside of vacuum plate 62 and the outside of fixing at 1 at vacuum plate 62 and vacuum plate 62 can be carried out to the outside vacuum plate 61, vacuum heat to the outside of wave filter 5, vacuum plate 62 is avoided spreading to the outside to the vacuum plate 5.

Referring to fig. 1 and 2, a circulating water pump 7 is connected to the left side of a cooling pipe 5 through a pipeline, a water storage tank 8 is connected to the side surface of the circulating water pump 7, an input port of the circulating water pump 7 is communicated with a heat insulation sleeve 6, an output port of the circulating water pump 7 is communicated with the cooling pipe 5, the circulating water pump 7 is used for conveying cooling water, so that the cooling water can circularly flow in the pipeline, the circulating water pump 7 is fixed on a temperature measurement system shell 1, one end, far away from the circulating water pump 7, of the cooling pipe 5 is connected with a cooling water drain 9, the cooling water drain 9 is located in the heat insulation chamber, a cooling fan 10 is installed on the left side of the cooling water drain 9, the cooling fan 10 is used for draining air in the heat insulation chamber, so that the cooling water drain 9 dissipates heat, a cooling hole 11 located on the side surface of the heat insulation chamber is formed in the left side surface of the temperature measurement system shell 1, a partition plate 12 is installed in the inside of the temperature measurement system shell 1, the partition plate 12 and the temperature measurement system shell 1 enclose a heat insulation chamber separated from the laser 2, the circulating water pump 7 and the water storage tank 8 are located in the heat insulation chamber, the partition plate 12 is arranged, the heat dissipation fan 10 and the heat dissipation system shell 7 can be prevented from being affected by the cooling water pump 7 and the cooling water drain 10, and the heat dissipation device 3 is prevented from affecting the heat dissipation system 2.

In summary, when the filter for the distributed optical fiber temperature measurement system is used, cooling water in the water storage tank 8 is conveyed into the cooling pipe 5 through the circulating water pump 7, the filter 4 is cooled by the cooling pipe 5, the cooling pipe 5 can be wrapped and isolated by the heat insulation sleeve 6 outside the cooling pipe 5, the influence of the outward diffusion of the temperature generated by the filter 4 on other electrical components is avoided, then the cooling water in the cooling pipe 5 flows into the cooling water drain 9, then the air in the isolation chamber is blown out by the cooling fan 10, the cooling water flows through the cooling water drain 9 to dissipate heat, then the cooling water flows into the water storage tank 8 again, the circulating water pump 7 and the cooling fan 10 can be isolated by the partition plate 12 in the temperature measurement system shell 1, the influence on the laser 2 and the optical circulator 3 is avoided, and the heat generated by the circulating water pump 7 and the cooling fan 10 is prevented from being diffused into the temperature measurement system shell 1.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a distributed optical fiber filter for temperature measurement system, includes temperature measurement system casing (1), its characterized in that: the utility model discloses a temperature measurement system casing, including temperature measurement system casing, filter (4), cooling tube (5), circulating water pump (7) are passed through to the outside cladding of cooling tube (5), circulating water pump (7) are passed through in the left side of cooling tube (5), the side of circulating water pump (7) is connected with water storage tank (8), the internally mounted of temperature measurement system casing (1) has division board (12).

2. A filter for a distributed optical fiber thermometry system according to claim 1, wherein: the number of the filters (4) is two, the cooling pipes (5) are spirally distributed outside the two filters (4), and the cooling pipes (5) are attached to the surfaces of the filters (4).

3. A filter for a distributed optical fiber thermometry system according to claim 1, wherein: the heat insulation sleeve (6) comprises an aerogel felt (61) and a vacuum plate (62), wherein the aerogel felt (61) is positioned outside the vacuum plate (62) and fixed inside the temperature measurement system shell (1), and the vacuum plate (62) is wrapped outside the cooling pipe (5).

4. A filter for a distributed optical fiber thermometry system according to claim 1, wherein: the splitter plate (12) and the temperature measuring system shell (1) enclose a heat insulation chamber which is separated from the laser (2), and the circulating water pump (7) and the water storage tank (8) are both positioned in the heat insulation chamber.

5. A filter for a distributed optical fiber thermometry system according to claim 1, wherein: the input port of the circulating water pump (7) is communicated with the heat insulation sleeve (6), the output port of the circulating water pump (7) is communicated with the cooling pipe (5), and the circulating water pump (7) is fixed on the temperature measuring system shell (1).

6. The filter for a distributed optical fiber temperature measurement system according to claim 4, wherein: one end of the cooling pipe (5) far away from the circulating water pump (7) is connected with a radiating water row (9), the radiating water row (9) is positioned in the heat insulation chamber, a radiating fan (10) is arranged on the left side of the radiating water row (9), and a radiating hole (11) positioned on the side surface of the heat insulation chamber is formed in the left side of the temperature measurement system shell (1).