CN209927708U - Portable oil-gas detection device for photoacoustic spectrometry - Google Patents
Portable oil-gas detection device for photoacoustic spectrometry Download PDFInfo
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- CN209927708U CN209927708U CN201920680374.0U CN201920680374U CN209927708U CN 209927708 U CN209927708 U CN 209927708U CN 201920680374 U CN201920680374 U CN 201920680374U CN 209927708 U CN209927708 U CN 209927708U
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Abstract
The utility model provides a gas detection device in oil of portable photoacoustic spectrometry, which comprises a main shell, a photoacoustic spectrometry component and a degassing component; the inner side wall of the main shell is provided with a photoacoustic spectroscopy assembly, the bottom surface of the inner side of the main shell is fixedly provided with a degassing assembly, and the photoacoustic spectroscopy assembly is connected with the degassing assembly through a conduit; the photoacoustic spectrum assembly comprises a photoacoustic cell, a display device and a detector arranged on the side wall of the photoacoustic cell, wherein the display device is arranged at the top of the bottom shell, and the detector is electrically connected with the display device to realize photoacoustic spectrum detection; the degassing component comprises a feeding bottle, a fixed support fixed on the bottom surface of the inner side of the main shell and a suction pump; the top of the fixed bracket is provided with a groove for holding a feeding bottle; the feeding bottle, the photoacoustic cell and the air pump are sequentially connected through a guide pipe, the air pumping end of the air pump is communicated with the photoacoustic cell through the guide pipe, and the air exhaust end of the air pump is communicated with the outside, so that the oil-gas mixture in the feeding bottle is degassed into the photoacoustic cell; the utility model has the characteristics of small, light in weight, portable and easy operation.
Description
Technical Field
The utility model relates to a gaseous detection device especially relates to a gaseous detection device in oil of portable photoacoustic spectrometry.
Background
In recent years, with the development of power systems and the increasing demand for reliability of power supply in human life, the maintenance of electrical equipment is gradually shifting from regular maintenance to state maintenance. The on-line monitoring of the dissolved gas in the oil and the fault diagnosis technology based on the on-line monitoring can provide important data support and theoretical criterion for the state maintenance of the electrical equipment such as the transformer, thereby becoming an indispensable key technology for realizing the state maintenance of the equipment. In order to realize on-line monitoring of dissolved gas in oil, various methods such as gas chromatography, gas sensor method, fourier infrared spectroscopy, and the like have been proposed. However, in the long-term use process, the methods have the defects of complex sampling, cross sensitivity, poor long-term stability, incomplete detection of gas components and the like. Currently, a new gas sensing technology, photoacoustic spectroscopy, has the advantages of high sensitivity, good selectivity, wide detection range, etc., and thus has become a research hotspot in the field of trace gas detection. Photoacoustic spectroscopy is also widely used in various oil-filled electrical devices, such as: the daily state evaluation of oil immersed power transformers, reactors, mutual inductors, on-load tap changers, circuit breakers, oil-filled bushings and the like.
But present optoacoustic spectrum gas detection device is bulky, weight is heavier and difficult for carrying, is difficult to satisfy and removes maintenance work demand, simultaneously, still need earlier with other instruments gas in with oil draw out, measure in the leading-in detection device again, the use step is comparatively loaded down with trivial details.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the technology, the utility model provides an oil gas detection device based on the photoacoustic spectrometry; aiming at the defects that the existing photoacoustic spectrometry gas detection device is large in size, heavy in weight, not easy to carry and complex in steps, the portable photoacoustic spectrometry gas detection device is improved, and the portable photoacoustic spectrometry gas detection device is small in size, light in weight, convenient to carry, capable of meeting the requirements of mobile work and simple in steps.
In order to achieve the above object, the utility model provides a following technical scheme:
a gas in oil detection device for portable photoacoustic spectrometry comprises a main shell, a photoacoustic spectrometry assembly and a degassing assembly; the inner side wall of the main shell is provided with a photoacoustic spectroscopy assembly, the bottom surface of the inner side of the main shell is fixedly provided with a degassing assembly, and the photoacoustic spectroscopy assembly is connected with the degassing assembly through a conduit;
the photoacoustic spectrum assembly comprises a photoacoustic cell, a display device and a detector arranged on the side wall of the photoacoustic cell, wherein the display device is arranged at the top of the main shell, and the detector is electrically connected with the display device to realize detection;
the degassing component comprises a feeding bottle, a fixed support fixed on the bottom surface of the inner side of the main shell, an air pump and a heater; the top of the fixed bracket is provided with a feeding bottle, and the heater is fixed at one side of the fixed bracket close to the feeding bottle; the feed bottle one end is provided with the feed inlet, the other end passes through the pipe with optoacoustic pond and aspiration pump and connects gradually, and the end of bleeding of aspiration pump passes through pipe intercommunication, exhaust end and external intercommunication with the optoacoustic pond, realizes the degasification.
The photoacoustic spectrum assembly further comprises a concave mirror, a light source, a modulation disc, a light filter and a photoacoustic cell which are sequentially fixed in front of the reflecting surface of the concave mirror, one end, close to the light source, of the photoacoustic cell is provided with a light hole, the focus of the concave mirror is located in the photoacoustic cell, the modulation disc is fixedly connected with a motor driving the modulation disc to rotate, and the edge of the modulation disc is provided with at least one light hole.
The device comprises a photoacoustic cell, a feeding bottle, a hydrogen gas chamber, a display device and a hydrogen detection assembly, wherein the device also comprises the hydrogen detection assembly, the hydrogen detection assembly comprises the hydrogen chamber and a hydrogen sensor, the hydrogen chamber is arranged between the photoacoustic cell and the feeding bottle, the hydrogen sensor is arranged on the side wall of the hydrogen chamber, and the hydrogen sensor is electrically connected with the display device.
Wherein, the connecting conduit between the feeding bottle and the photoacoustic cell is at least one, and the connecting conduit is provided with a disconnectable connector.
Wherein, main shell top still is provided with the thermovent, and the thermovent communicates with main shell is inside, and thermovent department is provided with the radiator.
The display device comprises a control panel and a display panel arranged on the display window, the control panel is electrically connected with the detector, and the detector is electrically connected with the control panel.
The display device further comprises a USB port arranged at the top of the main shell, and the display device is electrically connected with an external computer through the USB port.
Wherein, the main casing external fixation has the protective housing, and the protective housing is flip formula portable shell.
Wherein, the main casing still including setting up the storehouse that gives sound insulation in inside, the photoacoustic cell sets up in the storehouse that gives sound insulation.
The utility model has the advantages that: compared with the prior art, the utility model discloses a gaseous composition and the content that detects the gas under test in leading-in photoacoustic spectroscopy subassembly again in the photoacoustic spectroscopy subassembly in the inside degasification subassembly separation oil that sets up of main casing, the last mode that shows of rethread display device analysis, and then has provided a collection degasification, detection and display result function in the gaseous detection device in oil of portable photoacoustic spectroscopy of an organic whole. The utility model discloses not only have degasification, detect and analysis advantage as an organic whole, still have characteristics small, light in weight, portable and operating procedure is simple.
Drawings
FIG. 1 is an exploded view of the main housing and internal components of the present invention;
FIG. 2 is a schematic diagram of a photoacoustic spectroscopy assembly of the present invention;
fig. 3 is an overall schematic diagram of the present invention.
Description of the main elements
1. Main shell 2 and photoacoustic spectroscopy assembly
21. Photoacoustic cell 22 and reticle
23. Optical filter 24 and light source
25. Concave mirror 3, degasification subassembly
31. Feeding bottle 32, fixed bolster
33. Air pump 4 and hydrogen detection assembly
5. Radiator 6 and display panel
7. USB port 8 and printer
9. Soundproof bin 10, protective housing.
Detailed Description
In order to more clearly illustrate the technical solutions in the present technology, the drawings used in the description of the embodiments or the prior art will be described below.
Referring to fig. 1, the present embodiment provides an oil-gas detection apparatus for portable photoacoustic spectroscopy, which includes a main housing 1, a photoacoustic spectroscopy assembly 2, and a degassing assembly 3; the inner side wall of the main shell 1 is provided with a photoacoustic spectroscopy component 2, the bottom surface of the inner side of the main shell 1 is fixed with a degassing component 3, and the photoacoustic spectroscopy component 2 is connected with the degassing component 3 through a conduit; the photoacoustic spectrum assembly 2 comprises a photoacoustic cell 21, a display device and a detector arranged on the side wall of the photoacoustic cell 21, wherein the display device is arranged at the top of the main shell, and the detector is electrically connected with the display device to realize photoacoustic spectrum detection on an object in the photoacoustic cell 21; the degassing component 3 comprises a feeding bottle 31, a fixing support 32 fixed on the bottom surface of the inner side of the main shell 1, a suction pump 33 and a heater, wherein the heater is fixed on one side of the fixing support close to the feeding bottle and used for accelerating the precipitation speed of gas in oil; the top of the fixed bracket 32 is provided with a groove, and the feeding bottle 31 is placed in the groove; the feeding bottle 31 is provided with a feeding hole and a degassing hole, the photoacoustic cell 21 and the air pump 33 are sequentially connected through a conduit, the air pumping end of the air pump 33 is communicated with the photoacoustic cell 21 through a conduit, and the air exhaust end is communicated with the outside, so that the oil-gas mixture in the feeding bottle 31 is degassed into the photoacoustic cell 21; in the embodiment, the degassing component 3 is arranged in the main shell 1 to separate gas in oil, the gas is led into the photoacoustic spectroscopy component 2 to detect the components and the content of the detected gas, and finally the gas is analyzed and displayed through the display device, so that the gas in oil detection device of the portable photoacoustic spectroscopy, which integrates the functions of degassing, detecting and displaying results, is provided; the embodiment has the characteristics of small volume, light weight, portability and simple operation steps.
Referring to fig. 2, the photoacoustic spectroscopy assembly 2 of the present embodiment further includes a concave mirror 25, a focus of the concave mirror 25 is located in the photoacoustic cell 21, a light source 24, a modulation disc 22, a filter 23 and the photoacoustic cell 21 are sequentially fixed in front of a reflection surface of the concave mirror 25, at least one circular hole is disposed at an edge of the modulation disc 22, and the circular hole is driven by the modulation disc 22 to rotate around a central point of the modulation disc 22; a transparent small hole is arranged in the photoacoustic cell 21, incident light emitted by the light source 24 is reflected by the concave mirror 25 and then passes through each small round hole of the modulation disc 22, and then sequentially passes through the optical filter 23 and the transparent small hole to reach the photoacoustic cell 21, so that the incident light reacts with gas in the photoacoustic cell 21 to generate pressure waves, and the pressure waves are received by the detector and transmitted to the display device to realize detection. This embodiment adjusts the amplitude of the reflected light by passing through the chopper wheel 22, through the filter 23 to select different frequencies, and generates a corresponding pressure wave that is transmitted to the detector.
Referring to fig. 1, the present embodiment further includes a hydrogen detection assembly 44, where the hydrogen detection assembly 44 includes a hydrogen chamber and a hydrogen sensor, the hydrogen chamber is disposed between the photoacoustic cell 21 and the feeding bottle 31, the hydrogen sensor is disposed on a sidewall of the hydrogen chamber, and the hydrogen sensor is electrically connected to the display device to detect hydrogen; in the embodiment, at least one connecting conduit is arranged between the feeding bottle 31 and the photoacoustic cell 21, the connecting conduit is provided with the breakable connector, and if two conduits are arranged to the photoacoustic cell 21 and the breakable connector is opened to add gas into the photoacoustic cell, the function of cleaning the feeding bottle 31 can be realized; the main casing 1 in this embodiment is still including setting up the storehouse 9 that gives sound insulation in inside, and optoacoustic cell 21 sets up the inside at storehouse 9 that gives sound insulation, and storehouse 9 that gives sound insulation can effectively reduce external disturbance.
Referring to fig. 3, in the embodiment, a heat dissipation port is further disposed at the top of the main casing 1, the heat dissipation port is communicated with the inside of the main casing 1, a heat sink 5 is disposed at the heat dissipation port, and the heat sink 5 can effectively reduce heat emitted by a heater in the detection apparatus of the embodiment; the top of the main shell 1 of the embodiment is provided with a display window, the display device comprises a control panel and a display panel 6 arranged on the display window, the control panel is electrically connected with the detector, the detector is electrically connected with the control panel, the display panel 6 is a touch display panel 6, and meanwhile, the display panel 6 is also connected with a printer 8; the display device of the embodiment also comprises a USB port 7 arranged at the top of the main shell 1, and the display device is electrically connected with an external intelligent terminal through the USB port 7 and transmits data to a computer in real time for data analysis; the main shell 1 of this embodiment is externally fixed with a protective shell 10, and the protective shell 10 is a flip type portable shell, and can play a role in protecting the device, facilitating carrying and reducing external interference signals.
The utility model has the advantages that:
(1) by arranging the photoacoustic spectroscopy assembly and the degassing assembly into a whole, the functions of degassing sampling and gas detection are combined, and meanwhile, the operation steps of a user are simplified.
(2) By employing a simple degas assembly having only a combination of a suction pump, feed bottle and conduit, the volume of the degas assembly is greatly reduced, thereby reducing the overall volume and weight.
(3) The heater is additionally arranged to heat the feeding bottle, so that the gas in the oil can be accelerated to be separated out, and the pressure required by the separated out gas is reduced.
The above disclosure is only one or several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (9)
1. A gas in oil detection device for portable photoacoustic spectrometry is characterized by comprising a main shell, a photoacoustic spectrometry component and a degassing component; the photoacoustic spectroscopy assembly is arranged on the inner side wall of the main shell, the degassing assembly is fixed on the bottom surface of the inner side of the main shell, and the photoacoustic spectroscopy assembly is connected with the degassing assembly through a conduit;
the photoacoustic spectrum assembly comprises a photoacoustic cell, a display device and a detector arranged on the side wall of the photoacoustic cell, wherein the display device is arranged at the top of the main shell, and the detector is electrically connected with the display device to realize detection;
the degassing assembly comprises a feeding bottle, a fixing support fixed on the bottom surface of the inner side of the main shell, an air suction pump and a heater; the feeding bottle is placed at the top of the fixed support, and the heater is fixed at one side, close to the feeding bottle, in the fixed support; the feed bottle one end be provided with the feed inlet, the other end with optoacoustic pond and aspiration pump connect gradually through the pipe, the end of bleeding of aspiration pump with optoacoustic pond passes through pipe intercommunication, exhaust end and external intercommunication, realizes the degasification.
2. The apparatus as claimed in claim 1, wherein the photoacoustic spectroscopy assembly further comprises a concave mirror, and a light source, a reticle, a filter and a photoacoustic cell sequentially fixed in front of the reflecting surface of the concave mirror, wherein an aperture is formed at one end of the photoacoustic cell close to the light source, the focus of the concave mirror is located in the photoacoustic cell, the reticle is fixedly connected with a motor for rotating the reticle, and at least one aperture is formed at the edge of the reticle.
3. The apparatus of claim 1, further comprising a hydrogen detection assembly, the hydrogen detection assembly comprising a hydrogen chamber and a hydrogen sensor, the hydrogen chamber disposed between the photoacoustic cell and the feed cylinder, the hydrogen sensor disposed on the hydrogen chamber sidewall, the hydrogen sensor electrically connected to the display device.
4. The apparatus of claim 1, wherein the at least one connection conduit between the feed bottle and the photoacoustic cell is provided with a disconnectable connector.
5. The apparatus of claim 1, wherein the top of the main housing is further provided with a heat sink, the heat sink is communicated with the inside of the main housing, and the heat sink is provided with a heat sink.
6. The gas-in-oil detection apparatus of portable photoacoustic spectrometry of claim 1, wherein a display window is disposed at the top of the main housing, the display apparatus comprises a control board and a display panel disposed on the display window, the control board is electrically connected to the detector, and the detector is electrically connected to the control board.
7. The gas-in-oil detection apparatus for portable photoacoustic spectroscopy of claim 6, wherein the display apparatus further comprises a USB port disposed at the top of the main housing, and the display apparatus is electrically connected to an external computer through the USB port.
8. The apparatus of claim 1, wherein a protective case is fixed outside the main case, and the protective case is a flip-type portable case.
9. The gas-in-oil detection apparatus of portable photoacoustic spectroscopy of claim 1, wherein the main housing further comprises a sound-proof compartment disposed inside, the photoacoustic cell being disposed within the sound-proof compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680374.0U CN209927708U (en) | 2019-05-14 | 2019-05-14 | Portable oil-gas detection device for photoacoustic spectrometry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680374.0U CN209927708U (en) | 2019-05-14 | 2019-05-14 | Portable oil-gas detection device for photoacoustic spectrometry |
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| Publication Number | Publication Date |
|---|---|
| CN209927708U true CN209927708U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920680374.0U Active CN209927708U (en) | 2019-05-14 | 2019-05-14 | Portable oil-gas detection device for photoacoustic spectrometry |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235711A (en) * | 2022-02-24 | 2022-03-25 | 朗思传感科技(深圳)有限公司 | Miniaturized portable high-sensitivity gas measurement system |
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2019
- 2019-05-14 CN CN201920680374.0U patent/CN209927708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235711A (en) * | 2022-02-24 | 2022-03-25 | 朗思传感科技(深圳)有限公司 | Miniaturized portable high-sensitivity gas measurement system |
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