CN105320165A - Workshop hydrogen automatic discharge system - Google Patents
Workshop hydrogen automatic discharge system Download PDFInfo
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- CN105320165A CN105320165A CN201510857830.0A CN201510857830A CN105320165A CN 105320165 A CN105320165 A CN 105320165A CN 201510857830 A CN201510857830 A CN 201510857830A CN 105320165 A CN105320165 A CN 105320165A
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- hydrogen
- workshop
- automatic discharge
- discharge system
- module
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a workshop hydrogen automatic discharge system. The system includes at least two exhaust fans mounted on the top of a workshop, each exhaust fan is connected with a drive motor, the system also includes a light emission module, a light receiving module, a photoelectric detection module and a control processing module which are connected in sequence, and an output end of the control processing module is connected with a PC. The workshop hydrogen automatic discharge system detects changes of propagating wavelength, light intensity and the like of light waves in an optical fiber which are generated due to difference of hydrogen concentrations, and calculates a concentration value of hydrogen through a processor, thereby realizing real-time monitoring of hydrogen concentration, when the concentration of hydrogen exceeds a set safety range value, the processor sends out an alarm signal and controls the drive motor to start, and the exhaust fans work and automatically discharge hydrogen till the concentration of hydrogen recovers to a set safety value. The service life of the exhaust fans is prolonged, energy consumption is reduced, and the workshop hydrogen automatic discharge system has the characteristics of high sensitivity, good detection effect, simple structure and high intelligent degree.
Description
Technical field
The present invention relates to a kind of automatic discharge system, be specifically related to a kind of workshop hydrogen automatic discharge system.
Background technology
In the cleaning shop that some are airtight, need a certain amount of hydrogen as redox gas.If hydrogen does not have complete reaction, will be mixed in the air in workshop, when after the concentration that the hydrogen in workshop reaches certain, can set off an explosion under certain conditions, huge potential safety hazard is existed to the Workshop Production of enterprise.In order to solve this potential safety hazard, and consider the density of hydrogen this physical property less, traditional method is: on the ceiling in workshop, install multiple vent fan, installs hydrogen alarm simultaneously, reach the effect of early warning and discharge in the upper end in each corner, workshop.Although adopt the method can play the effect of discharge hydrogen and warning to a certain extent, still there is following defect in actual use procedure:
1, set vent fan needs work of not stopping work for 24 hours, is unfavorable for the serviceable life of vent fan on the one hand, and the electric energy that another aspect vent fan operationally consumes waste is more, is unfavorable for the saving of the energy;
2, can not density of hydrogen in real time in inspection vehicle, the concentration current according to hydrogen can not realize automatic-discharging function.
Summary of the invention
For above-mentioned deficiency, technical matters to be solved by this invention is to provide that a kind of intelligence degree is high, the workshop hydrogen automatic discharge system of saves energy, and this hydrogen automatic discharge system can density of hydrogen in real time in inspection vehicle the concentration current according to hydrogen carries out automatic-discharging.
For solving the problem, the present invention is achieved through the following technical solutions:
Workshop hydrogen automatic discharge system, comprise at least 2 vent fans be installed on top, workshop, each vent fan is all connected with a drive motor, also comprise the light emission module, Optical Receivers, Photoelectric Detection module and the control treatment module that connect successively, the output terminal of control treatment module is also connected with a PC, wherein
Light emission module, for launching the light signal of specified wavelength, form with in order to the temperature control circuit driving the modulation circuit of LD light source and be connected with LD light source primarily of LD light source, described modulation circuit is also connected with signal generating circuit;
Optical Receivers, comprise the single-mode fiber that optical circulator and end face are coated with palladium film, for utilizing emitted light is sent to optical circulator, and the reflected light be reflected back by single-mode fiber is sent to Photoelectric Detection module;
Photoelectric Detection module, for receiving reflected light that single-mode fiber is reflected back and carrying out opto-electronic conversion to described reflected light, is sent to control treatment module by the electric signal be converted to;
Control treatment module, for receiving the electric signal that Photoelectric Detection module is sent, and after computing is carried out to it, draw the concentration value of hydrogen, and drawing a control signal after the preset value of this concentration value and system is compared process, described drive motor receives this control signal, to control the keying of vent fan.
In such scheme, described control treatment module specifically can comprise processor, display screen and audible-visual annunciator, and described display screen and audible-visual annunciator are connected on the output terminal of processor.
In such scheme, described processor can adopt model to be the single-chip microcomputer of C8051F120.
In such scheme, described Photoelectric Detection module can comprise photoelectric commutator, and the output terminal of described photoelectric commutator is connected with a prime amplifier, its output terminal is connected with an active low-pass filter circuit.
In such scheme, in order to avoid dust, moisture contamination palladium film, described single-mode fiber is arranged with the dust cover of one section of opening, other end sealing, and the sealed end of dust cover corresponds to the palladium plated film end on single-mode fiber.
In such scheme, prevent the particles such as dust from entering in dust cover further, the openend of described dust cover is provided with dustproof filter circle.
Beneficial effect of the present invention is:
The change that wavelength, light intensity etc. that the present invention is propagated in a fiber by detection light wave produce due to the difference of density of hydrogen, the concentration value of hydrogen is calculated by processor, thus to realize density of hydrogen be Real-Time Monitoring, when the density of hydrogen detected exceeds the safe range value of setting, processor sends alerting signal and controls drive motor and starts, vent fan works, and automatically discharges hydrogen till the concentration of hydrogen returns to the safety value of setting.Adopt native system can not only detect the concentration of hydrogen in real time, vent fan rotation work rationally and effectively can also be controlled, reduce energy consumption, extend the serviceable life of vent fan, there is highly sensitive, that Detection results good, structure is simple, intelligence degree is high feature.
Accompanying drawing explanation
Fig. 1 is the plan structure figure that vent fan is arranged on top, workshop.
Fig. 2 is the module frame chart of this workshop hydrogen automatic discharge system composition.
Number in the figure is: 1, workshop; 2, vent fan; 3, light emission module; 4, Optical Receivers; 5, Photoelectric Detection module; 6, control treatment module.
Embodiment
In the present invention, except as otherwise clear and definite regulation, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, the connection of two element internals can be made.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below in conjunction with specific embodiments and the drawings, the present invention is further explained.
As shown in Figure 1 and Figure 2, workshop hydrogen automatic discharge system, comprises at least 2 vent fans 2 be installed on top, workshop 1, and the vent fan 2 of the present embodiment is 5, on four corners being distributed in top, workshop 1 successively and centre position.Described each vent fan 2 is all connected with a drive motor, also comprises the light emission module 3, Optical Receivers 4, Photoelectric Detection module 5 and the control treatment module 6 that connect successively, the output terminal of control treatment module 6 is also connected with a PC, wherein
Light emission module 3, for launching the light signal of specified wavelength, form with in order to the temperature control circuit driving the modulation circuit of LD light source and be connected with LD light source primarily of LD light source, wherein, LD light source is specially DFB-LD laser instrument.Described modulation circuit is also connected with signal generating circuit, described signal generating circuit is chip and the associated peripheral circuits formation of ICL8038 primarily of model, triangular current is produced during its work, make the AC compounent of triangular current and DC component accurately adjustable by modulation circuit, in order to drive LD light source luminescent.And by temperature circuit, LD light source is controlled, making it be operated in temperature constant state, is specifically that the chip of LTC1923 and peripheral circuit form by model.
Optical Receivers 4, comprise the single-mode fiber that optical circulator and end face are coated with palladium film, for utilizing emitted light is sent to optical circulator, and the reflected light be reflected back by single-mode fiber is sent to Photoelectric Detection module 5.In the present embodiment, described single-mode fiber is arranged with the dust cover of one section of opening, other end sealing, and the sealed end of dust cover corresponds to the palladium plated film end on single-mode fiber.The openend of described dust cover is provided with dustproof filter circle.
Photoelectric Detection module 5, for receiving reflected light that single-mode fiber is reflected back and carrying out opto-electronic conversion to described reflected light, is sent to control treatment module 6 by the electric signal be converted to; Described Photoelectric Detection module 5 comprises photoelectric commutator, and the output terminal of described photoelectric commutator is connected with a prime amplifier, its output terminal is connected with an active low-pass filter circuit.Photoelectric commutator is specially photodiode.
Control treatment module 6, for receiving the electric signal that Photoelectric Detection module 5 is sent, and after computing is carried out to it, draw the concentration value of hydrogen, and drawing a control signal after the preset value of this concentration value and system is compared process, described drive motor receives this control signal, to control the keying of vent fan 2.Described preset value is specifically according to the requirement of different workshops and the margin of safety set.
Described control treatment module 6 comprises processor, display screen and audible-visual annunciator, and described display screen and audible-visual annunciator are connected on the output terminal of processor.The single-chip microcomputer of described processor to be model be C8051F120, inside is integrated with 12 ADC and 12 DAC, can realize the conversion of signal, and point out that JTAG debugs, and travelling speed is fast.
The course of work of the present invention:
Single-mode fiber is placed in corresponding workshop 1 environment needing to detect density of hydrogen, hydride is generated due to the palladium film of single-mode fiber end face and hydrogen reaction, therefore the refractive index of single-mode fiber end face changes, thus change its reflective light intensity, by calculating the change of light intensity signal, the concentration information of hydrogen can be obtained.LD light source sends light signal, and light signal is transferred to single-mode fiber without loss by optical circulator, and reflects at palladium film end face, reflect, and reflected light signal is transferred on optical circulator in the other direction along optical fiber; Reflected light penetrates from the output port of optical circulator after optical circulator is separated, and after amplifying, is obtained by photodiode, and after transferring light signal to electric signal, then processor is sent to after filtering circuit; Processor is changed this electric signal by the A/D converter carried, and carries out analyzing and processing, calculates density of hydrogen, display on a display screen, and simultaneously these data of density of hydrogen are uploaded to PC by communication module and store.When density of hydrogen exceedes preset value, audible-visual annunciator is reported to the police, and drive motor starts, and vent fan 2 works until the safe range that density of hydrogen reaches preset value just can stop; Otherwise, do not do any response.
Claims (6)
1. workshop hydrogen automatic discharge system, comprise at least 2 vent fans (2) be installed on workshop (1) top, (2) are all connected with a drive motor with each vent fan, it is characterized in that: also comprise the light emission module (3), Optical Receivers (4), Photoelectric Detection module (5) and the control treatment module (6) that connect successively, the output terminal of control treatment module (6) is also connected with a PC, wherein
Light emission module (3), for launching the light signal of specified wavelength, form with in order to the temperature control circuit driving the modulation circuit of LD light source and be connected with LD light source primarily of LD light source, described modulation circuit is also connected with signal generating circuit;
Optical Receivers (4), comprise the single-mode fiber that optical circulator and end face are coated with palladium film, for utilizing emitted light is sent to optical circulator, and the reflected light be reflected back by single-mode fiber is sent to Photoelectric Detection mould (5) block;
Photoelectric Detection module (5), for receiving reflected light that single-mode fiber is reflected back and carrying out opto-electronic conversion to described reflected light, is sent to control treatment module (6) by the electric signal be converted to;
Control treatment module (6), for receiving the electric signal that Photoelectric Detection module (5) is sent, and after computing is carried out to it, draw the concentration value of hydrogen, and drawing a control signal after the preset value of this concentration value and system is compared process, described drive motor receives this control signal, to control the keying of vent fan (2).
2. workshop as claimed in claim 1 hydrogen automatic discharge system, is characterized in that: described control treatment module (6) comprises processor, display screen and audible-visual annunciator, and described display screen and audible-visual annunciator are connected on the output terminal of processor.
3. workshop as claimed in claim 2 hydrogen automatic discharge system, is characterized in that: the single-chip microcomputer of described processor to be model be C8051F120.
4. workshop as claimed in claim 1 or 2 hydrogen automatic discharge system, it is characterized in that: described Photoelectric Detection module (5) comprises photoelectric commutator, and the output terminal of described photoelectric commutator is connected with a prime amplifier, its output terminal is connected with an active low-pass filter circuit.
5. workshop as claimed in claim 1 hydrogen automatic discharge system, is characterized in that: the dust cover described single-mode fiber being arranged with one section of opening, other end sealing, and the sealed end of dust cover corresponds to the palladium plated film end on single-mode fiber.
6. workshop as claimed in claim 5 hydrogen automatic discharge system, is characterized in that: the openend of described dust cover is provided with dustproof filter circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510857830.0A CN105320165A (en) | 2015-11-30 | 2015-11-30 | Workshop hydrogen automatic discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510857830.0A CN105320165A (en) | 2015-11-30 | 2015-11-30 | Workshop hydrogen automatic discharge system |
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| CN105320165A true CN105320165A (en) | 2016-02-10 |
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| CN201510857830.0A Pending CN105320165A (en) | 2015-11-30 | 2015-11-30 | Workshop hydrogen automatic discharge system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395305A (en) * | 1989-09-05 | 1991-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Controlling method for boiler discharged gas mixing device |
| CN201183608Y (en) * | 2008-04-18 | 2009-01-21 | 台州学院 | Cabin sulfurated hydrogen testing alarming and air exhausting apparatus |
| US20110304470A1 (en) * | 2010-06-09 | 2011-12-15 | Empire Technology Development Llc | Gas concentration monitor |
| CN203037574U (en) * | 2012-11-29 | 2013-07-03 | 长安大学 | Hydrogen detection device |
| CN204100475U (en) * | 2014-07-30 | 2015-01-14 | 上海星伦工业自动化技术有限公司 | Workshop automatic ventilation equipment |
| CN204154608U (en) * | 2014-10-13 | 2015-02-11 | 南京信息工程大学 | A kind of safety monitoring system for dust workplace |
| CN205318241U (en) * | 2015-11-30 | 2016-06-15 | 桂林斯壮微电子有限责任公司 | Automatic discharge system of workshop hydrogen |
-
2015
- 2015-11-30 CN CN201510857830.0A patent/CN105320165A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395305A (en) * | 1989-09-05 | 1991-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Controlling method for boiler discharged gas mixing device |
| CN201183608Y (en) * | 2008-04-18 | 2009-01-21 | 台州学院 | Cabin sulfurated hydrogen testing alarming and air exhausting apparatus |
| US20110304470A1 (en) * | 2010-06-09 | 2011-12-15 | Empire Technology Development Llc | Gas concentration monitor |
| CN203037574U (en) * | 2012-11-29 | 2013-07-03 | 长安大学 | Hydrogen detection device |
| CN204100475U (en) * | 2014-07-30 | 2015-01-14 | 上海星伦工业自动化技术有限公司 | Workshop automatic ventilation equipment |
| CN204154608U (en) * | 2014-10-13 | 2015-02-11 | 南京信息工程大学 | A kind of safety monitoring system for dust workplace |
| CN205318241U (en) * | 2015-11-30 | 2016-06-15 | 桂林斯壮微电子有限责任公司 | Automatic discharge system of workshop hydrogen |
Non-Patent Citations (1)
| Title |
|---|
| 李珍珍: "微透镜型光纤氢气传感器的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
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Application publication date: 20160210 |
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