CN217586913U

CN217586913U - Optical online monitoring and analyzing device for hydrogen content of fixed cold water tank of large-sized steam turbine generator

Info

Publication number: CN217586913U
Application number: CN202221289558.2U
Authority: CN
Inventors: 潘龙飞; 朱昌煜; 王宝健; 娄利; 百嘎利; 刘志勇; 张利馗; 段忠宇; 梁彬; 李志和
Original assignee: Oppsen Qinhuangdao Technology Co ltd; Baotou Power Generation Branch Huadian Inner Mongolia Energy Co ltd
Current assignee: Oppsen Qinhuangdao Technology Co ltd; Baotou Power Generation Branch Huadian Inner Mongolia Energy Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-14
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to the technical field of monitoring equipment, in particular to an optical on-line monitoring and analyzing device for hydrogen content in a fixed cold water tank of a large-scale turbonator, which comprises an optical fiber sensing mechanism, an optical fiber demodulating mechanism and an upper computer; the optical fiber sensing mechanism comprises an optical fiber sensor, the optical fiber sensor is installed at the front end of an optical fiber, the optical fiber sensor is installed in the air chamber, the detection end of the optical fiber sensor is placed in the fixed cold water tank, and the optical fiber demodulation mechanism comprises a sensing light source, a laser heating light source, a coupler, a circulator and a spectrum demodulator which are arranged in the fixed cold water tank. This equipment can be under high temperature high concentration gas environment real-time supervision hydrogen concentration and content, in time carries out the early warning to can save historical data in real time and be convenient for contrastive analysis, thereby also quantitative analysis goes out the hydrogen tolerance that spills in units bars etc. department, and whether harm has appeared in the easy hydrogen weakness that leaks of prejudgement bar simultaneously, for turbo generator set safe operation health care navigation.

Description

Optical online monitoring and analyzing device for hydrogen content of fixed cold water tank of large-sized steam turbine generator

Technical Field

The utility model relates to a monitoring facilities technical field specifically is large-scale turbo generator decides cold water tank hydrogen content optics on-line monitoring analytical equipment.

Background

Generally, a turbo generator set adopts a hydrogen cooling mode, the hydrogen cooling effect is good, hydrogen in a fixed cooling water tank of the turbo generator mainly comes from the inside of the generator, the hydrogen has strong permeability and small molecules, and can permeate into an insulating water conduit at the end part of a coil and collect into the fixed cooling water tank along with water flow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cold water storage cistern hydrogen content optics on-line monitoring analytical equipment is decided to large-scale turbo generator to solve the problem that provides in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the optical on-line monitoring and analyzing device for the hydrogen content of the cooling water tank of the large-scale steam turbine generator comprises an optical fiber sensing mechanism, an optical fiber demodulating mechanism and an upper computer; the optical fiber sensing mechanism comprises an optical fiber sensor, the optical fiber sensor is arranged at the front end of an optical fiber, the optical fiber penetrates through the air chamber and is arranged in the fixed cold water tank, the optical fiber sensor on the optical fiber is arranged in the air chamber, an air inlet pipe and an air outlet pipe are welded on the air chamber, the detection end of the optical fiber sensor is arranged in the fixed cold water tank, and the optical fiber demodulating mechanism is arranged in the fixed cold water tank;

the optical fiber demodulating mechanism comprises a sensing light source, a laser heating light source, a coupler, a circulator and a spectrum demodulator, wherein the sensing light source and the laser heating light source are connected with the coupler and are coupled into a beam of light source through the coupler to be irradiated onto the circulator; one end of the circulator is connected with the optical fiber, the other end of the circulator is connected with the spectrum demodulator, the circulator is used for inputting the reflected signal into the spectrum demodulator through the circulator, and the spectrum demodulator is used for converting the optical signal into an electric signal;

the spectrum demodulator is connected with the analog-to-digital converter through a lead wire and used for converting the analog signal into a corresponding digital signal, and the digital signal output end of the analog-to-digital converter is connected with the input end of the high-speed digital signal processor through the lead wire; the output end of the high-speed digital signal processor is connected with an Ethernet converter through a lead, and the Ethernet converter is connected with an upper computer through a network cable and used for sending digital signals to the upper computer.

Preferably, a high-speed data processing chip is arranged in the high-speed digital signal processor, and the high-speed data processing chip contains an analysis algorithm program and is used for processing data of the real-time signals acquired and obtained by the front end.

Preferably, the serial port of the upper computer is connected with the signal receiving end of the electric controller through a lead.

Preferably, the electric controller is connected with the sensing light source and the control end of the laser heating light source.

Preferably, the host computer is used for sending a wavelength light beam control command to the electric controller, and the electric controller is used for controlling the sensing light source and the laser heating light source to emit light beams with required wavelengths.

Preferably, the whole monitoring and analyzing device is supported by power supplied by a linear power supply, the input end of the linear power supply is connected with a power socket, and the output end of the linear power supply is connected with the power supply ends of the optical fiber sensing mechanism, the optical fiber demodulating mechanism and the upper computer by leads.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a large-scale turbo generator decides cold water tank hydrogen content optics on-line monitoring analytical equipment, optic fibre sensing mechanism in this equipment can not produce the spark when using, safety is higher, and anti-electromagnetic interference is stronger, and small, the sensibility is strong, can be under high temperature high concentration gas environment real-time supervision hydrogen concentration and content, in time carry out the early warning, and can save historical data in real time and be convenient for contrastive analysis, thereby also quantitative analysis goes out the hydrogen tolerance that the department such as unit bar spills, whether harm has appeared in the easy hydrogen weak point of leaking of prejudgement bar simultaneously, for turbo generator unit safe operation health care navigation.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. an optical fiber sensor; 2. an air chamber; 3. an air inlet pipe; 4. an air outlet pipe; 5. an optical fiber; 6. a fixed cold water tank; 7. a laser heating light source; 8. an electric controller; 9. a sensing light source; 10. a coupler; 11. a circulator; 12. a spectrum demodulator; 13. an analog-to-digital converter; 14. a high speed digital signal processor; 15. an Ethernet converter; 16. a host computer; 17. a linear power supply; 18. an electric outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1, the present invention provides a technical solution: the optical on-line monitoring and analyzing device for hydrogen content of the cooling water tank of the large-scale turbonator comprises an optical fiber sensing mechanism, an optical fiber demodulating mechanism and an upper computer 16; the optical fiber sensing mechanism comprises an optical fiber sensor 1, the optical fiber sensor 1 is installed at the front end of an optical fiber 5, the optical fiber 5 penetrates through the air chamber 2 and is arranged in the fixed cold water tank 6, the optical fiber sensor 1 on the optical fiber 5 is installed in the air chamber 2, the air inlet pipe 3 and the air outlet pipe 4 are welded on the air chamber 2, the detection end of the optical fiber sensor 1 is placed in the fixed cold water tank 6 after being sealed by a leading-out wire end, and the optical fiber demodulation mechanism is placed in the fixed cold water tank 6;

the optical fiber demodulating mechanism comprises a sensing light source 9, a laser heating light source 7, a coupler 10, a circulator 11 and a spectrum demodulator 12, wherein the sensing light source 9 and the laser heating light source 7 are connected with the coupler 10 and are coupled into a beam of light source through the coupler 10 to be irradiated on the circulator 11; one end of the circulator 11 is connected with the optical fiber 5, and the other end is connected with the spectrum demodulator 12, and the circulator 11 is used for inputting the reflected signal into the spectrum demodulator 12, and the spectrum demodulator 12 is used for converting the optical signal into an electrical signal;

the spectrum demodulator 12 is connected with the analog-to-digital converter 13 through a lead wire and is used for converting the analog signal into a corresponding digital signal, and the digital signal output end of the analog-to-digital converter 13 is connected with the input end of the high-speed digital signal processor 14 through a lead wire; the output end of the high-speed digital signal processor 14 is connected with an ethernet converter 15 through a lead wire, and the ethernet converter 15 is connected with the upper computer 16 through a network cable and used for transmitting the digital signal to the upper computer 16.

Further, a high-speed data processing chip is disposed inside the high-speed digital signal processor 14, and contains an analysis algorithm program for performing data processing on the real-time signal acquired by the front end.

Further, the serial port of the upper computer 16 is connected with the signal receiving end of the electric controller 8 through a lead.

Further, the electric controller 8 is connected with the sensing light source 9 and the control end of the laser heating light source 7.

Further, the upper computer 16 is configured to send a wavelength light beam control command to the electric controller 8, and the electric controller 8 is configured to control the sensing light source 9 and the laser heating light source 7 to emit light beams with required wavelengths.

Furthermore, the whole monitoring and analyzing device is supported by electric power through a linear power supply 17, the input end of the linear power supply 17 is connected with a power socket 18, and the output end of the linear power supply 17 is connected with the power supply ends of the optical fiber sensing mechanism, the optical fiber demodulating mechanism and the upper computer 16 through lead wires.

The working principle is as follows: the optical fiber sensor 1 in the scheme adopts palladium as a sensitive material, when the palladium absorbs hydrogen, the dielectric constant of the palladium changes, the change is reversible and nonlinear, the monitoring and analyzing device of the scheme adopts the optical fiber sensor 1 as a sensitive element, the optical fiber sensor 1 penetrates through an air chamber 2 communicated with a cooling water tank 6, the change of the dielectric constant of the palladium is obtained through the change of the grating wavelength, the grating wavelength change is converted into an electric signal through a spectrum demodulator 12, the real-time electric signal is converted into a digital signal through an analog-to-digital converter 13 and is transmitted to a high-speed digital signal processor 14 to obtain the dielectric constant change of the palladium, the hydrogen concentration is analyzed through a built-in algorithm in a high-speed data processing chip, and then the digital signal of the analyzed hydrogen concentration is uploaded to an upper computer 16 through an Ethernet converter 15.

It is worth noting that: the whole device realizes control to the device through the controller, and the controller is common equipment and belongs to the prior mature technology, so that the electrical connection relation and the specific circuit structure are not described again.

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

Claims

1. Large-scale turbo generator decides cold water tank hydrogen content optics on-line monitoring analytical equipment, its characterized in that: comprises an optical fiber sensing mechanism, an optical fiber demodulating mechanism and an upper computer (16); the optical fiber sensing mechanism comprises an optical fiber sensor (1), the optical fiber sensor (1) is installed at the front end of an optical fiber (5), the optical fiber (5) penetrates through an air chamber (2) and is arranged in a fixed cold water tank (6), the optical fiber sensor (1) on the optical fiber (5) is installed in the air chamber (2), an air inlet pipe (3) and an air outlet pipe (4) are welded on the air chamber (2), the detection end of the optical fiber sensor (1) is placed in the fixed cold water tank (6), and an optical fiber demodulation mechanism is placed in the fixed cold water tank (6);

the optical fiber demodulating mechanism comprises a sensing light source (9), a laser heating light source (7), a coupler (10), a circulator (11) and a spectrum demodulator (12), wherein the sensing light source (9) and the laser heating light source (7) are connected with the coupler (10), one end of the circulator (11) is connected with the optical fiber (5), and the other end of the circulator is connected with the spectrum demodulator (12) which is used for converting optical signals into electric signals;

the spectrum demodulator (12) is connected with the analog-to-digital converter (13) through a lead, and the digital signal output end of the analog-to-digital converter (13) is connected with the input end of the high-speed digital signal processor (14) through a lead; the output end of the high-speed digital signal processor (14) is connected with an Ethernet converter (15) through a lead, and the Ethernet converter (15) is connected with an upper computer (16) through a network cable.

2. The optical on-line monitoring and analyzing device for hydrogen content in the cooling water tank of the large-scale steam turbine generator as claimed in claim 1, characterized in that: and a high-speed data processing chip is arranged in the high-speed digital signal processor (14).

3. The optical on-line monitoring and analyzing device for the hydrogen content of the cooling water tank of the large-scale steam turbine generator as claimed in claim 1, characterized in that: the serial port of the upper computer (16) is connected with the signal receiving end of the electric controller (8) through a lead.

4. The optical online monitoring and analyzing device for hydrogen content in the cooling water tank of the large-scale steam turbine generator as claimed in claim 3, characterized in that: and the electric controller (8) is connected with the sensing light source (9) and the control end of the laser heating light source (7).

5. The optical on-line monitoring and analyzing device for the hydrogen content of the cooling water tank of the large-scale steam turbine generator as claimed in claim 1, characterized in that: the whole monitoring and analyzing device is supported by electric power through a linear power supply (17), the input end of the linear power supply (17) is connected with a power socket (18), and the output end of the linear power supply (17) is connected with the power supply ends of an optical fiber sensing mechanism, an optical fiber demodulating mechanism and an upper computer (16) through lead wires.