CN114279972A - Gas degassing device in oil for full-automatic photoacoustic spectrometry detector - Google Patents
Gas degassing device in oil for full-automatic photoacoustic spectrometry detector Download PDFInfo
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- CN114279972A CN114279972A CN202111603780.5A CN202111603780A CN114279972A CN 114279972 A CN114279972 A CN 114279972A CN 202111603780 A CN202111603780 A CN 202111603780A CN 114279972 A CN114279972 A CN 114279972A
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- 238000007872 degassing Methods 0.000 title claims abstract description 186
- 238000004867 photoacoustic spectroscopy Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000001834 photoacoustic spectrum Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 5
- 206010037544 Purging Diseases 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 36
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model provides a gaseous degasser in oil for full-automatic photoacoustic spectrometry detector which characterized in that: comprises a degassing cylinder, a degassing cylinder tray, a tray rotation driving system, a horizontal oscillator, an automatic connector and a circulating air pump. The degassing bottle tray is provided with a plurality of degassing bottle seats for fixing a plurality of degassing bottles; the tray rotation driving system can drive the degassing bottle tray to rotate, and the degassing bottle tray can be positioned by being matched with the groove-type photoelectric sensor and the reflection-type photoelectric sensor. The degassing bottle tray and the tray rotation driving system are arranged on a horizontal oscillator, and the horizontal oscillator can drive the degassing bottle tray to oscillate left and right/front and back along the horizontal direction according to a fixed amplitude; the automatic connector can be automatically communicated with or disconnected from the air channel on the degassing bottle. The horizontal oscillator may also be replaced with an ultrasonic horn. The device can realize synchronous degasification of a plurality of oil samples and then detect in sequence, so that the average detection time of a single oil sample is shortened, and the detection speed of the photoacoustic spectrum detector is improved.
Description
Technical Field
The invention relates to a separation device for dissolved gas in electrical equipment oil, in particular to a degassing device for gas in insulating oil, which is used for a full-automatic photoacoustic spectrometry detector.
Background
The insulating oil is one of main insulating media of power equipment, and is widely applied to power equipment such as power transformation, high-voltage bushings, transformers, reactors and the like. At present, the states of equipment such as an oil-immersed transformer, an oil insulation sleeve and the like can be detected and diagnosed under the condition of no power failure through Analysis (namely, Dissolved Gas Analysis (DGA)) of Dissolved Gas in insulating oil, and the method is the best method for monitoring early faults of the oil insulation equipment and preventing catastrophic accidents, which is acknowledged in the industry.
The most commonly used detection aspects for detecting the gas dissolved in the oil include gas chromatography, sensor method, photoacoustic spectrometry, etc., wherein photoacoustic spectrometry has advantages of fast detection speed, high precision, no need of carrier gas, etc., which are favorable for application, but has some disadvantages. At present, the dissolved gas in oil is detected by adopting a photoacoustic spectrometry method, and a headspace method is usually adopted for degassing, so that the degassing time of a single sample is longer, and the degassing time becomes a key factor for restricting the reduction of the detection time. Meanwhile, the degassing bottle is communicated with the photoacoustic detection module in the degassing process, and only one sample can be degassed at the same time, so that when a plurality of samples are detected, the total detection time is the sample quantity and the single sample detection time, and the application of rapid detection of the plurality of samples is restricted. When a plurality of samples are detected by adopting the gas chromatography, the plurality of samples are degassed at the same time, then gas samples are collected from the glass needle tube sequentially and injected into the chromatograph for detection, and the average detection time of the samples can be obviously shortened by adopting the method. However, due to different detection principles and different requirements for gas samples, the method cannot be applied to a photoacoustic spectroscopy detection device at present. Therefore, a fully automatic degasser is needed to increase the speed of detecting multiple samples.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a degassing device for gas in insulating oil for a full-automatic photoacoustic spectrometry detector. The invention combines the oscillation headspace degassing, the rotating tray and the automatic gas circulation to realize the one-time degassing and the sequential detection and improve the detection speed of a plurality of samples.
The technical scheme of the invention is as follows: a gas degassing device in insulating oil for a full-automatic photoacoustic spectrometry detector comprises: comprises a degassing cylinder, a degassing cylinder tray, a tray rotation driving system, a horizontal oscillator, an automatic connector and a circulating air pump.
The degassing device is respectively connected with the gas inlet end and the gas outlet end of a photoacoustic module of the photoacoustic spectrum monitor through gas pipelines; the air outlet end of the photoacoustic module is connected with the air inlet end of the circulating air pump of the degassing device, and the air inlet end of the photoacoustic module is connected with the filter of the degassing device. The degassing bottle can be provided with a plurality of degassing bottles and is placed on a degassing bottle tray; the tray rotation driving system drives the degassing tray to rotate; the tray rotating drive system is arranged on a tray on the horizontal oscillator; the automatic connector is arranged beside the horizontal vibrator, so that two quick-plugging plugs on the automatic connector respectively correspond to an air inlet quick-plugging socket and an air outlet quick-plugging socket on the bottle cap of the degassing bottle; the circulating air pump is installed beside the automatic connector.
The degassing bottles can be provided with a plurality of degassing bottles, and the number of the degassing bottles is the same as that of the degassing bottle seats on the degassing bottle tray; the degassing bottle comprises a bottle cap and a bottle body, wherein the bottle cap and the bottle body are sealed by threads, and are provided with a sealing gasket made of polytetrafluoroethylene; the inner part of the bottle body is of a cylindrical structure, and the inner wall of the bottle body is coated with a polytetrafluoroethylene non-stick layer; the bottle cap is of a circular structure, and the inner wall of the bottle cap is coated with a polytetrafluoroethylene non-stick layer; the bottle cap is provided with an oil filling pipe, an air inlet quick-plug socket, an air outlet quick-plug socket, an air pressure sensor, a temperature sensor and a handle; the oil injection pipe extends inwards and outwards, extends into the direction of the gas cylinder and is higher than the liquid level of the degassed bottle after oil is injected, extends out of the bottle cap in a direction larger than 10mm, and is sealed by a rubber cap after the oil injection is finished; the air inlet quick plug socket and the air outlet quick plug socket are respectively positioned on two sides of the bottle cap, and the inner side of the bottle cap opposite to the air inlet quick plug socket is provided with an air guide plate; the gas guide plate is of an approximate L-shaped structure, the rotating angle is larger than 90 degrees and smaller than 150 degrees, and gas enters the gas inlet quick plug socket and is shielded by the transverse part of the gas guide plate; the air inlet quick plug socket and the air outlet quick plug socket are identical in structure and comprise a middle socket and an external movable clamping sleeve; the air inlet quick plug socket and the air outlet quick plug socket are in a closed state when not connected with corresponding quick plug plugs; the side surface of the bottle cap is also provided with a positioning clamp.
The degassing tray comprises a turntable with a circular structure and can rotate around the center under the drive of a tray rotation driving system; the degassing tray is provided with a plurality of degassing bottle seats for fixing a plurality of degassing bottles; each degassing bottle seat is provided with a positioning clamping groove, and the positioning clamping grooves are matched with the positioning clamping grooves on the degassing bottle caps to realize the positioning of the degassing bottles; the degassing bottle seat is internally provided with a circular vibration isolation sponge; and a positioning slit is formed at the intersection of the extension line of the central point of the turntable and the central point of the degassing bottle seat and the edge of the turntable.
The tray rotation driving system comprises a mounting shaft, a belt pulley, a driving motor, a groove type photoelectric sensor, a groove type sensor bracket, a reflection type photoelectric sensor, a reflection rod, a strut and a fixing plate. The installation axle is installed perpendicularly, and one end is fixed on the tray of horizontal oscillator, and the other end is fixed on the fixed plate. 4 supporting columns are further mounted between the tray and the fixing plate. The degassing bottle tray and the belt pulley are fixed on the mounting shaft in a coaxial mounting mode; the belt pulley and the degassing cylinder tray can synchronously rotate around the mounting shaft; the driving motor drives the belt pulley to rotate through a belt; the driving motor is fixed on the tray; the groove-shaped photoelectric sensor is arranged on the groove-shaped sensing bracket, the groove-shaped sensing bracket is fixed on the edge of the fixed plate, and the groove-shaped photoelectric sensor is matched with a positioning slit on the edge of a turntable of the degassing bottle tray to realize the determination of the rotation position of the degassing bottle tray; the reflecting rod is fixed on the belt pulley, and the belt pulley drives the reflecting rod to move synchronously when rotating; the reflective photoelectric sensor is fixed on the tray, and the working surface of the reflective photoelectric sensor corresponds to the reflecting plane of the reflecting rod. And the groove type photoelectric sensor and the reflection type photoelectric sensor respectively feed back signals to the master control system.
The degassing bottle tray and the tray rotation driving system are fixed on a tray of the horizontal oscillator, and the tray of the horizontal oscillator can drive the degassing bottle tray and the tray rotation driving system to oscillate left and right or front and back along the horizontal direction according to specific amplitude and specific frequency.
The automatic connector comprises a quick plug inserting support, a quick plug inserting pressure plate, a quick plug inserting pressure head, a first micro switch, a second micro switch, a first push rod module, a second push rod module, a push rod guide rail, a filter and a filter fixing seat. 2 quick-plug plugs are respectively fixed on the quick-plug support, and the 2 quick-plug plugs respectively correspond to an air inlet quick-plug socket and an air outlet quick-plug socket on the bottle cap of the degassing bottle; the quick plug corresponding to the air outlet quick plug socket is connected with the filter through a flexible pipeline and then connected with the air inlet end of the photoacoustic module of the photoacoustic spectrometer after passing through the filter; the quick plug corresponding to the air inlet quick plug socket is connected with an air outlet of the circulating air pump through a pipeline; an air inlet of the circulating air pump is connected with an air outlet end of the photoacoustic detection module; 2 quick-plug pressure heads are arranged, correspond to the quick-plug plugs in position and are fixed on the quick-plug pressure plate; when the quick-plug support works, the quick-plug support moves up and down along the push rod guide rail under the pushing of the second push rod module to drive the quick-plug to move up and down; the quick-plug pressing plate moves up and down along the push rod guide rail under the pushing of the first push rod module to drive the quick-plug pressing head to move up and down, and the first micro switch and the second micro switch are respectively used for limiting the positions of the quick-plug pressing plate and the quick-plug support; the filter is fixed on the filter fixing seat. And the quick plug is inserted into the air inlet quick plug socket and the air outlet quick plug socket, so that the air inlet quick plug socket and the air outlet quick plug socket are communicated internally and externally.
A degassing device for gas in oil for a full-automatic photoacoustic spectrometry detector can also comprise a degassing cylinder, a degassing cylinder tray, a tray rotation driving system, an ultrasonic vibration head, an automatic connector and a circulating air pump. The degassing cylinder, the degassing cylinder tray, the tray rotation driving system, the ultrasonic vibration head, the automatic connector and the circulating air pump are the same as the degassing device; the support, the driving motor, the mounting shaft and the reflection type photoelectric sensor of the tray rotation driving system are fixed on a mounting disc of the ultrasonic vibration head; the ultrasonic vibration heads are the same in number as the degassing bottle seats and are arranged on the ultrasonic vibration head mounting disc, and the central lines of the ultrasonic vibration heads and the degassing bottle seats coincide during mounting.
The work is divided into 6 stages:
1. and (3) degassing the gas cylinder and injecting oil:
cleaning the degassing cylinder, and covering a degassing cylinder cover; inserting the standby quick-plug into the air inlet quick-plug socket or the air outlet quick-plug socket; opening a rubber cap of the oil injection pipe, injecting an oil sample to be detected, and recording the temperature Te and the volume Vo of the oil sample; covering a rubber cap, and pulling out the quick plug; all de-aeration bottles are treated the same. Then the degassing bottle trays are sequentially placed in sequence, and the positioning clamp on the bottle caps of the degassing bottles corresponds to the positioning clamp grooves on the degassing bottle trays.
2. And (3) a synchronous degassing stage:
for degassers using a horizontal oscillator:
and starting the horizontal oscillator, controlling the degassing cylinder to reach a set temperature by the horizontal oscillator, driving a degassing cylinder tray, and horizontally vibrating the tray rotation driving system according to a set frequency and amplitude. After a certain time, the gas in the degassing bottle and the dissolved gas in the injected oil sample to be tested reach balance, the horizontal oscillator is stopped, and the gas pressure Pg is recorded.
For a degasser using an ultrasonic horn:
the ultrasonic vibration head mounting disc controls the degassing cylinder to reach a set temperature, and the ultrasonic vibration head is started. After a certain time, the gas in the oil sample in the degassing bottle is removed, the ultrasonic vibration head stops working, and the air pressure Pg is recorded.
3. And a photoacoustic module purging stage:
the circulating air pump is started, air enters from the quick plug connected with the filter, flows through the filter, enters the photoacoustic module through the air inlet end, then flows out of the air outlet end of the photoacoustic module, enters the circulating air pump, flows out of the circulating air pump again, enters another quick plug and flows out, and purging of the air circuit and the photoacoustic module is achieved. After a certain time T1, the air circulation pump is stopped.
4. Gas circulation and detection stage:
starting the first push rod module, driving a quick-plug pressure head to move downwards under the pushing of the first push rod module along a push rod guide rail to drive the quick-plug pressure head to move downwards, pressing down a movable clamping sleeve by the quick-plug pressure head, and controlling the first push rod module to stop moving by a first microswitch; and starting the second push rod module, driving the quick plug to move downwards along the push rod guide rail under the pushing of the second push rod module by the quick plug support, inserting the quick plug into an air inlet quick plug socket and an air outlet quick plug socket on the air bottle cap, and controlling the second push rod module to stop moving by the second micro switch. The first push rod module is restarted, the quick-plug pressing plate moves upwards along the push rod guide rail under the pushing of the first push rod module to drive the quick-plug pressing head to move upwards, and the quick-plug pressing head releases the movable clamping sleeve to complete the connection of the automatic connector and the degassing cylinder; start circulating air pump, the gas in the degasification jar flows from giving vent to anger and inserting the socket soon, through the filter, gets into the optoacoustic module of optoacoustic spectrometer, then gives vent to anger the end from optoacoustic module and flows, gets into circulating air pump, flows from circulating air pump again, inserts the socket soon through admitting air and returns inside the degasification jar. And after a certain time T2, stopping the circulating air pump, and disconnecting the quick-plug from the air inlet quick-plug socket and the air outlet quick-plug socket. The photoacoustic module detects a gas concentration.
5. And switching degassing cylinders, repeating the steps 3-4 to realize the detection of the gas in all degassing cylinders, and calculating the concentration of the gas in the oil sample according to the volume Va of the degassing cylinders, the volume Vo of the oil sample and the oil temperature Teo, the degassed gas pressure Pg, the volume Vg of the gas circuit and the photoacoustic module and the temperature Teg.
6. A cleaning stage:
and sequentially taking the degassing cylinder off the degassing cylinder tray, opening the bottle cap, and cleaning the tested oil sample.
Has the advantages that:
by adopting the degassing device, a plurality of oil samples can be synchronously degassed and then sequentially detected, so that the average detection time of a single oil sample is shortened, and the detection speed of the photoacoustic spectrum detector is improved.
Drawings
FIG. 1 is a schematic view of the configuration of the degasser of the present invention in connection with a photoacoustic module;
FIG. 2 is a schematic view of the degassing cylinder and the cylinder cap of the degassing device of the present invention;
FIG. 3 is a schematic view of the structure of a degassing bottle tray of the degassing apparatus of the present invention;
FIG. 4 is a schematic view of a tray rotation driving system of the degassing apparatus of the present invention;
FIG. 5 is a schematic view of an automatic connector of the degassing apparatus of the present invention;
FIG. 6 is a schematic view of a second embodiment of the structure of a tray rotation driving system of the degassing apparatus of the present invention.
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 a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention without creative efforts.
Fig. 1 is a schematic structural view of the connection of the degassing apparatus of the present invention and a photoacoustic module. As shown in fig. 1, the degassing device is respectively connected with the gas inlet end and the gas outlet end of the photoacoustic module of the photoacoustic spectrometry monitor through gas pipelines; the air outlet end of the photoacoustic module is connected with the air inlet end of a circulating air pump 6 of the degassing device, and the air inlet end of the photoacoustic module is connected with a filter 5-5 of the degassing device. The degassing bottle tray 2 is provided with a plurality of degassing bottles 1; the tray rotating driving system 3 drives the degassing bottle tray 2 to rotate; the tray rotating driving system 3 is arranged on a tray of the horizontal oscillator 4; the automatic connector 5 is arranged beside the horizontal vibrator 4, so that two quick-plugging plugs on the automatic connector 5 respectively correspond to an air inlet quick-plugging socket and an air outlet quick-plugging socket on the bottle cap of the degassing bottle; the air circulation pump 6 is installed beside the automatic connector 5.
FIG. 2 is a schematic view of the degassing cylinder and the bottle cap of the degassing device of the present invention. As shown in fig. 2, the degassing bottle 1 comprises a bottle cap 1-3 and a bottle body 1-1, wherein the bottle cap 1-3 and the bottle body 1-1 are sealed by threads and are provided with a sealing gasket 1-2 made of polytetrafluoroethylene; the interior of the bottle body 1-1 is of a cylindrical structure, and the inner wall of the bottle body is coated with a polytetrafluoroethylene non-stick layer; the bottle caps 1-3 are of a circular structure, and the inner walls of the bottle caps are coated with polytetrafluoroethylene non-stick layers; the bottle cap 1-3 is provided with an oil filling pipe 1-7, an air inlet quick plug socket 1-4, an air outlet quick plug socket 1-8, an air pressure sensor 1-11, a temperature sensor 1-12 and a handle 1-5; the oil filling pipe 1-7 extends outwards and inwards, extends into the bottle body 1-1 in a direction larger than 10mm and is higher than the liquid level of the degassed bottle 1 after oil is filled, extends out of the bottle cap 1-3 in a direction larger than 10mm, and is sealed by a rubber cap 1-6 after oil is filled; the air inlet quick plug socket 1-4 and the air outlet quick plug socket 1-8 are respectively positioned at two sides of the bottle cap 1-3, and the inner side of the bottle cap 1-3 opposite to the air inlet quick plug socket 1-4 is provided with an air guide plate 1-10; the gas guide plates 1-10 are of an approximate L-shaped structure, and the rotating angle is larger than 90 degrees and smaller than 150 degrees; the air inlet quick plug socket 1-4 and the air outlet quick plug socket 1-8 have the same structure; the air inlet quick plug socket 1-4 comprises a middle socket 1-4-1 and an external reboundable movable cutting sleeve 1-4-2, the movable cutting sleeve 1-4-2 is pressed down, the air inlet quick plug socket 1-4 is communicated with the interior of the degassing bottle 1, and the air inlet quick plug socket 1-4 is isolated from the degassing bottle 1 after the movable cutting sleeve 1-4-2 rebounds; the structure of the air outlet quick plug socket 1-8 is the same as that of the air inlet quick plug socket 1-4;
and the side surface of the bottle cap 1-3 is also provided with a positioning card 1-9.
FIG. 3 is a schematic view of the structure of a degassing tray of the degassing apparatus of the present invention. As shown in fig. 3, the degassing bottle tray 2 comprises a circular turntable 2-1, which can rotate around the center under the driving of a tray rotation driving system; the degassing bottle tray is provided with a plurality of degassing bottle seats 2-2 for fixing a plurality of degassing bottles; each degassing bottle seat 2-2 is provided with a positioning clamping groove 2-4, and the positioning clamping groove 2-4 is matched with a positioning clamp 1-9 on a degassing bottle cap 1-3 to realize the positioning of the degassing bottle cap 1-3; the degassing bottle seat 2-2 is internally provided with a circular ring-shaped vibration isolation sponge 2-5, and the size of the circular ring-shaped vibration isolation sponge is matched with that of the degassing bottle seat 2-2 and the degassing bottle; a positioning slit 2-3 is arranged at the intersection position of the extension line of the central point of each degassing bottle seat 2-2 and the central point of the rotating disc 2-1 and the edge of the rotating disc 2-1.
FIG. 4 is a schematic view of a tray rotation driving system of the degassing apparatus of the present invention. As shown in FIG. 4, the tray rotation driving system 3 comprises a mounting shaft 3-6, a belt pulley 3-5, a driving motor 3-4, a groove type photoelectric sensor 3-3, a groove type sensing bracket 3-2, a reflection type photoelectric sensor 3-8, a reflection rod 3-7, a support column 3-9 and a fixing plate 3-1. The mounting shaft 3-6 is vertically mounted, one end of the mounting shaft is fixed on the tray 4-1 of the horizontal oscillator 4, and the other end of the mounting shaft is fixed on the fixing plate 3-1. Four supporting columns 3-9 are also arranged between the tray 4-1 and the fixed plate 3-1. The turntable 2-1 and the belt pulley 3-5 of the degassing bottle tray are arranged on the mounting shaft 3-6 in a coaxial mounting mode; the belt pulley 3-5 and the turntable 2-1 of the degassing bottle tray can synchronously rotate around the mounting shaft 3-6; the driving motor 3-4 drives the belt pulley 3-5 to rotate through a belt; the driving motor 3-4 is fixed on the tray 4-1; the groove-shaped photoelectric sensor 3-3 is arranged on a groove-shaped sensing bracket 3-2, the groove-shaped sensing bracket 3-2 is fixed on the edge of the fixed plate 3-1, and the groove-shaped photoelectric sensor 3-3 is matched with the positioning slit 2-3 on the edge of the rotary plate 2-1 to determine the rotating position of the degassing bottle tray 2; the reflecting rod 3-7 is fixed on the belt pulley 3-5, and the belt pulley 3-5 drives the reflecting rod 3-7 to move synchronously when rotating; the reflective photoelectric sensor 3-8 is fixed on the tray 4-1, and the working surface of the reflective photoelectric sensor corresponds to the reflection plane of the reflection rod 3-7. The groove type photoelectric sensors 3-3 and the reflection type photoelectric sensors 3-8 respectively feed back signals to the master control system; the main control system determines whether the turntable 2-1 is at an initial position according to the signals of the reflective sensor 3-8; the main control system determines whether the turntable 2-1 rotates to a required position according to whether the groove type photoelectric sensor 3-3 is shielded by the positioning slit, and the signals of the reflection type sensor 3-8 and the groove type photoelectric sensor 3-3 are integrated to determine to which degassing bottle the turntable 2-1 rotates.
FIG. 5 is a schematic view of an automatic connector of the degassing apparatus of the present invention. As shown in fig. 5, the automatic connector 5 comprises a quick-plug support 5-8, a quick-plug 5-9, a quick-plug pressure plate 5-10, a quick-plug pressure head 5-11, a first microswitch 5-6, a second microswitch 5-7, a first push rod module 5-1, a second push rod module 5-2, a push rod guide rail 5-3, a filter 5-5 and a filter fixing seat 5-4. 2 quick-plug plugs 5-9 are respectively fixed on the quick-plug supports 5-8, and the 2 quick-plug plugs 5-9 respectively correspond to the air inlet quick-plug sockets 1-4 and the air outlet quick-plug sockets 1-8 on the degassing bottle caps 1-3; a quick plug 5-9 corresponding to the air outlet quick plug socket 1-8 is connected with a filter 5-5 through a flexible pipeline for filtering oil vapor in the air path, and is connected with the air inlet end of the photoacoustic module of the photoacoustic spectrometer after passing through the filter 5-5; the fast plug 5-9 corresponding to the air inlet fast plug socket 1-4 is connected with the air outlet of the circulating air pump through a pipeline; 2 quick plug pressure heads 5-11 are arranged, correspond to the quick plugs 5-9 in position and are fixed on the quick plug pressure plates 5-10; when the fast plug connector works, the fast plug connector bracket 5-8 moves up and down along the push rod guide rail 5-3 under the pushing of the second push rod module 5-2 to drive the fast plug connector 5-9 to move up and down; the quick plug pressing plate 5-10 moves up and down along the push rod guide rail 5-3 under the pushing of the first push rod module 5-1 to drive the quick plug pressing head 5-11 to move up and down, and the first micro switch 5-6 and the second micro switch 5-7 are respectively used for limiting the positions of the quick plug pressing plate 5-10 and the quick plug support 5-8; the filter 5-5 is fixed on the filter fixing seat 5-4.
FIG. 6 is a schematic view of a second embodiment of the structure of a tray rotation driving system of the degassing apparatus of the present invention. As shown in FIG. 6, the tray rotation driving system 3 comprises a mounting shaft 3-6, a belt pulley 3-5, a driving motor 3-4, a groove type photoelectric sensor 3-3, a groove type sensing bracket 3-2, a reflection type photoelectric sensor 3-8, a reflection rod 3-7, a support column 3-9 and a fixing plate 3-1. The mounting shaft 3-6 is vertically mounted, one end of the mounting shaft is fixed on the mounting disc 4-1 of the ultrasonic vibration head 4, and the other end of the mounting shaft is fixed on the fixing plate 3-1. Four supporting columns 3-9 are further arranged between the mounting plate 4-1 and the fixing plate 3-1. The turntable 2-1 and the belt pulley 3-5 are arranged on the mounting shaft 3-6 in a coaxial mounting manner; the belt pulley 3-5 and the rotary table 2-1 can synchronously rotate around the mounting shaft 3-6; the driving motor 3-4 drives the belt pulley 3-5 to rotate through a belt; the driving motor 3-4 is fixed on the mounting disc 4-1; the groove-shaped photoelectric sensor 3-3 is arranged on a groove-shaped sensing bracket 3-2, the groove-shaped sensing bracket 3-2 is fixed on the edge of the fixed plate 3-1, and the groove-shaped photoelectric sensor 3-3 is matched with the positioning slit 2-3 on the edge of the rotary disc 2-1 to determine the rotating position of the degassing tray 2-1; the reflecting rod 3-7 is fixed on the belt pulley 3-5, and the belt pulley 3-5 drives the reflecting rod 3-7 to move synchronously when rotating; the reflective photoelectric sensor 3-8 is fixed on the mounting disc 4-1, and the working surface of the reflective photoelectric sensor corresponds to the reflection plane of the reflection rod 3-7. The ultrasonic vibration head 4 is arranged on the mounting disc 4-1, and the central line of the ultrasonic vibration head 4 corresponds to the central line of the degassing bottle seat 2-2. On one hand, the ultrasonic vibration head 4 is adopted to replace a horizontal vibrator, so that the device structure is more compact, and the volume of the device is reduced; in addition, when a horizontal oscillator is adopted, the whole degassing bottle tray 2 and the tray rotation driving system 3 are fixed on the horizontal oscillator, so that the degassing bottle tray is easy to damage in long-term operation.
Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but various changes may be apparent to those skilled in the art, and it is intended that all inventive concepts utilizing the inventive concepts set forth herein be protected without departing from the spirit and scope of the present invention as defined and limited by the appended claims.
Claims (7)
1. The utility model provides a gaseous degasser in oil for full-automatic photoacoustic spectrometry detector which characterized in that: comprises a degassing bottle (1), a degassing bottle tray (2), a tray rotation driving system (3), a horizontal oscillator (4), an automatic connector (5) and a circulating air pump (6);
the degassing bottles (1) are multiple in number and are placed on the degassing bottle tray (2); the tray rotating driving system (3) drives the degassing bottle tray (2) to rotate;
the tray rotating drive system (3) is arranged on a tray (4-1) on the horizontal oscillator (4); the automatic connector (5) is arranged beside the horizontal vibrator (4), so that two quick-plugging plugs (5-9) on the automatic connector (5) respectively correspond to an air inlet quick-plugging socket (1-4) and an air outlet quick-plugging socket (1-8) on a degassing bottle cap (1-3); the circulating air pump (6) is arranged beside the automatic connector (5);
the air inlet end of the circulating air pump (6) is connected with the air outlet end of the photoacoustic module of the photoacoustic spectrum monitor;
the air outlet end of the filter (5-5) on the automatic connector is used for being connected with the air inlet end of the photoacoustic module.
2. The apparatus of claim 1, wherein the apparatus comprises:
the degassing bottle (1) comprises a bottle cap (1-3) and a bottle body (1-1), wherein the bottle cap (1-3) and the bottle body (1-1) are sealed by threads, and are provided with a sealing gasket (1-2) made of polytetrafluoroethylene; the interior of the bottle body (1-1) is of a cylindrical structure, and the inner wall of the bottle body is coated with a polytetrafluoroethylene non-stick layer; the bottle caps (1-3) are of a circular structure, and the inner walls of the bottle caps are coated with polytetrafluoroethylene non-stick layers; the bottle cap (1-3) is provided with an oil filling pipe (1-7), an air inlet quick plug socket (1-4), an air outlet quick plug socket (1-8), an air pressure sensor (1-11), a temperature sensor (1-12) and a handle (1-5); the oil filling pipe (1-7) extends outwards and inwards, extends into the bottle body (1-1) direction and is higher than the liquid level of the degassed bottle (1) after oil is filled, extends out of the bottle cap (1-3) direction and is sealed by a rubber cap (1-6) after oil is filled; the air inlet quick plug socket (1-4) and the air outlet quick plug socket (1-8) are respectively positioned at two sides of the bottle cap (1-3), and the inner side of the bottle cap (1-3) opposite to the air inlet quick plug socket (1-4) is provided with an air guide plate (1-10); the gas guide plates (1-10) are of an L-shaped structure, and the rotating angle is larger than 90 degrees and smaller than 150 degrees; the air inlet quick plug socket (1-4) and the air outlet quick plug socket (1-8) have the same structure; the air inlet quick plug socket (1-4) comprises a middle plug socket (1-4-1) and an external reboundable movable cutting sleeve (1-4-2); the side surface of the bottle cap (1-3) is also provided with a positioning card (1-9); when the movable cutting sleeve (1-4-2) is pressed down, the air inlet quick plug socket (1-4) is communicated with the interior of the degassing cylinder (1), and after the movable cutting sleeve (1-4-2) rebounds, the air inlet quick plug socket (1-4) is isolated from the degassing cylinder (1); the structure of the air outlet quick plug socket (1-8) is the same as that of the air inlet quick plug socket (1-4).
3. The apparatus of claim 1, wherein the apparatus comprises:
the degassing bottle tray (2) comprises a turntable (2-1) with a circular structure and can rotate around the center under the drive of a tray rotation driving system (3); the degassing bottle tray (2) is provided with a plurality of degassing bottle seats (2-2) for fixing a plurality of degassing bottles (1); each degassing bottle seat (2-2) is provided with a positioning clamping groove (2-4), and the positioning clamping grooves (2-4) are matched with positioning clamps (1-9) on degassing bottle caps (1-3) to realize the positioning of the degassing bottle caps (1-3); the circular ring-shaped vibration isolation sponge (2-5) is arranged in the degassing bottle seat (2-2), and the size of the circular ring-shaped vibration isolation sponge is matched with that of the degassing bottle seat (2-2) and that of the degassing bottle (1); a positioning slit (2-3) is arranged at the intersection position of the extension line of the central point of each degassing bottle seat (2-2) and the central point of the rotating disc (2-1) and the edge of the rotating disc (2-1).
4. The apparatus of claim 1, wherein the apparatus comprises:
the tray rotation driving system (3) comprises a mounting shaft (3-6), belt pulleys (3-5), a driving motor (3-4), a groove type photoelectric sensor (3-3), a groove type sensing bracket (3-2), a reflection type photoelectric sensor (3-8), a reflection rod (3-7), a support column (3-9) and a fixing plate (3-1); the mounting shaft (3-6) is vertically mounted, one end of the mounting shaft is fixed on a tray (4-1) of the horizontal oscillator (4), and the other end of the mounting shaft is fixed on the fixing plate (3-1); four supporting columns (3-9) are also arranged between the tray (4-1) and the fixed plate (3-1); the turntable (2-1) and the belt pulley (3-5) of the degassing tray are arranged on the mounting shaft (3-6) in a coaxial mounting manner; the belt pulley (3-5) and the rotary disc (2-1) of the degassing tray can synchronously rotate around the mounting shaft (3-6); the driving motor (3-4) drives the belt pulley (3-5) to rotate through a belt; the driving motor (3-4) is fixed on the tray (4-1); the groove-shaped photoelectric sensor (3-3) is arranged on a groove-shaped sensing bracket (3-2), the groove-shaped sensing bracket (3-2) is fixed on the edge of the fixed plate (3-1), and the groove-shaped photoelectric sensor (3-3) is matched with a positioning slit (2-3) on the edge of the turntable (2-1) to determine the rotating position of the turntable (2-1) of the degassing bottle tray; the reflecting rods (3-7) are fixed on the belt pulleys (3-5), and the belt pulleys (3-5) drive the reflecting rods (3-7) to move synchronously when rotating; the reflective photoelectric sensor (3-8) is fixed on the tray (4-1), and the working surface of the reflective photoelectric sensor corresponds to the reflecting plane of the reflecting rod (3-7); the groove type photoelectric sensors (3-3) and the reflection type photoelectric sensors (3-8) respectively feed back signals to a master control system of the photoacoustic spectrometer.
5. The apparatus of claim 1, wherein the apparatus comprises:
the automatic connector (5) comprises a quick-plug support (5-8), a quick-plug (5-9), a quick-plug pressing plate (5-10), a quick-plug pressure head (5-11), a first microswitch (5-6), a second microswitch (5-7), a first push rod module (5-1), a second push rod module (5-2), a push rod guide rail (5-3), a filter (5-5) and a filter fixing seat (5-4); the two quick-plug plugs (5-9) are respectively fixed on the quick-plug supports (5-8), and the two quick-plug plugs (5-9) respectively correspond to the air inlet quick-plug sockets (1-4) and the air outlet quick-plug sockets (1-8) on the degassing bottle caps (1-3); a quick plug (5-9) corresponding to the air outlet quick plug socket (1-8) is connected with a filter (5-5) through a flexible pipeline, and is connected with the air inlet end of the photoacoustic module of the photoacoustic spectrometer after passing through the filter (5-5); a quick plug (5-9) corresponding to the air inlet quick plug socket (1-4) is connected with an air outlet of the circulating air pump (6) through a pipeline; two quick plug press heads (5-11) are arranged, correspond to the quick plugs (5-9) in position and are fixed on the quick plug press plates (5-10); when the fast plug device works, the fast plug support (5-8) moves up and down along the push rod guide rail (5-3) under the pushing of the second push rod module (5-2) to drive the fast plug (5-9) to move up and down; the quick plug pressing plate (5-10) moves up and down along the push rod guide rail (5-3) under the pushing of the first push rod module (5-1) to drive the quick plug pressing head (5-11) to move up and down, and the first micro switch (5-6) and the second micro switch (5-7) are respectively used for limiting the positions of the quick plug pressing plate (5-10) and the quick plug support (5-8); the filter (5-5) is fixed on the filter fixing seat (5-4).
6. A degassing device for gas in oil for a full-automatic photoacoustic spectrometry detector is characterized by comprising a degassing cylinder (1), a degassing cylinder tray (2), a tray rotation driving system (3), an ultrasonic vibration head (4), an automatic connector (5) and a circulating air pump (6);
the degassing bottle (1), the degassing bottle tray (2), the tray rotation driving system (3), the automatic connector (5) and the circulating air pump (6) are the same as the degassing device in claim 1; the support columns (3-9), the driving motors (3-4), the mounting shafts (3-6) and the reflection type photoelectric sensors (3-8) of the tray rotation driving system (3) are fixed on a mounting disc (4-1) of the ultrasonic vibration head (4); the number of the ultrasonic vibration heads (4) is the same as that of the degassing bottle seats (2-2), and the ultrasonic vibration heads are arranged on an ultrasonic vibration head mounting disc (4-1), and the central line of the ultrasonic vibration heads (4) is coincided with that of the degassing bottle seats (2-2) during mounting.
7. A method for degassing gas in oil using the gas degassing apparatus of any one of claims 1 to 6, comprising the steps of:
step 1, degassing bottle oiling stage:
cleaning the degassing cylinder, and covering a degassing cylinder cover; inserting the standby quick-plug into the air inlet quick-plug socket or the air outlet quick-plug socket; opening a rubber cap of the oil injection pipe, injecting an oil sample to be detected, and recording the temperature Te and the volume Vo of the oil sample; covering a rubber cap, and pulling out the quick plug; performing the same treatment on all degassing cylinders, sequentially placing the degassing cylinders on a degassing cylinder tray in sequence, wherein the positioning clamp on the bottle caps of the degassing cylinders corresponds to the positioning clamp grooves on the degassing cylinder tray;
step 2, synchronous degassing stage:
for degassers using a horizontal oscillator:
starting a horizontal oscillator, controlling the degassing cylinder to reach a set temperature by the horizontal oscillator, driving a degassing cylinder tray, horizontally vibrating the tray rotation driving system according to a set frequency and amplitude, balancing gas in the degassing cylinder and dissolved gas in an injected oil sample to be tested after a certain time, stopping the horizontal oscillator, and recording the gas pressure Pg;
for a degasser using an ultrasonic horn:
controlling the degassing cylinder to reach a set temperature by the ultrasonic vibration head mounting disc, starting the ultrasonic vibration head, removing gas in an oil sample in the degassing cylinder after a certain time, stopping the ultrasonic vibration head, and recording the air pressure Pg;
and 3, a photoacoustic module purging stage:
starting the circulating air pump, allowing air to enter from the quick plug connected with the filter, flow through the filter, enter the photoacoustic module through the air inlet end, flow out from the air outlet end of the photoacoustic module, enter the circulating air pump, flow out from the circulating air pump, enter the other quick plug and flow out, purging the air circuit and the photoacoustic module, and stopping the circulating air pump after a preset time T1;
and 4, gas circulation and detection stage:
starting the first push rod module, driving a quick-plug pressure head to move downwards under the pushing of the first push rod module along a push rod guide rail to drive the quick-plug pressure head to move downwards, pressing down a movable clamping sleeve by the quick-plug pressure head, and controlling the first push rod module to stop moving by a first microswitch; starting the second push rod module, enabling the quick plug bracket to move downwards along the push rod guide rail under the pushing of the second push rod module to drive the quick plug to move downwards, enabling the quick plug to be inserted into an air inlet quick plug socket and an air outlet quick plug socket on the degassing bottle cap, and enabling the second micro switch to control the second push rod module to stop moving; the first push rod module is restarted, the quick-plug pressing plate moves upwards along the push rod guide rail under the pushing of the first push rod module to drive the quick-plug pressing head to move upwards, and the quick-plug pressing head releases the movable clamping sleeve to complete the connection of the automatic connector and the degassing cylinder; start circulating air pump, the gas in the degasification jar flows from giving vent to anger and inserting the socket soon, through the filter, gets into the optoacoustic module of optoacoustic spectrometer, then gives vent to anger the end from optoacoustic module and flows, gets into circulating air pump, flows from circulating air pump again, inserts the socket soon through admitting air and returns inside the degasification jar. And after the preset time T2, stopping the circulating air pump, and disconnecting the quick-plug from the air inlet quick-plug socket and the air outlet quick-plug socket. The photoacoustic module detects the gas concentration;
step 5, switching degassing cylinders, repeating the steps 3-4, detecting the gas in all degassing cylinders, and calculating the concentration of the gas in the oil sample according to the volume Va of the degassing cylinders, the volume Vo of the oil sample and the oil temperature Teo, the degassed air pressure Pg, the volume Vg and the temperature Teg of the air circuit and the photoacoustic module;
step 6, a cleaning stage:
and sequentially taking the degassing cylinder off the degassing cylinder tray, opening the bottle cap, and cleaning the tested oil sample.
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