CN108333235A - Gas analyzer shell and the gas analyzer for using the shell - Google Patents
Gas analyzer shell and the gas analyzer for using the shell Download PDFInfo
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- CN108333235A CN108333235A CN201810372924.2A CN201810372924A CN108333235A CN 108333235 A CN108333235 A CN 108333235A CN 201810372924 A CN201810372924 A CN 201810372924A CN 108333235 A CN108333235 A CN 108333235A
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- sampling cavity
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- 238000005070 sampling Methods 0.000 claims abstract description 124
- 239000000523 sample Substances 0.000 claims description 95
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004868 gas analysis Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 91
- 238000007789 sealing Methods 0.000 description 24
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides the gas analyzers of gas analyzer shell and the use shell, belong to gas analysis technology field, the sampling cavity for sensors configured is equipped in shell, shell is equipped with the air inlet being connected to sampling cavity and gas outlet, the sensor support structure for being used to support sensor is equipped in the sampling cavity, sampling cavity includes the first balance portion being connected to for the air inlet with sensor and the second balance portion being connected to for the gas outlet with sensor, and first balance portion is connected to the second balance portion.By the way that sampling cavity is divided into the first balance portion being connected to sensor air inlet and the buffer portion being connected to the gas outlet of sensor; and the two is made to keep connection; cause the air inlet side and the air outlet side pressure balance that make the sensor being placed in sampling cavity in tested gas free diffusing in the first balance portion and the second balance portion, the method for solving the problems, such as protection electrochemical sensor in the prior art complex.
Description
Technical field
The present invention relates to the gas analyzers of gas analyzer shell and the use shell.
Background technology
Currently, gas analyzer is commonly used in having the working environments of special requirement to a certain gas content, into promoting the circulation of qi
Before body analysis, generally requires and first gas is sampled and then gas sensor is recycled to analyze gas.
The utility model patent that Authorization Notice No. is CN206146910U, authorized announcement date is 2017.05.03 discloses one
Hydrogen detection device in oxygen, oxygen in kind of hydrogen, including hydrogen-oxygen purity transmitter, purity sensor, further include sensor holder, connector,
Locking nut, sensor holder are equipped with sensor sampling cavity for placing purity sensor, by connector by hydrogen-oxygen purity
Transmitter is connected to sensor sampling cavity, and the releasable connection of connector and sensor holder is realized in the setting of locking nut,
When needing repairing, purity sensor can be taken out and replace, still, gas purity sensor commonly uses electrochemistry
Sensor, the film in electrochemical sensor are easy to the pressure imbalance because of film both sides, cause electrochemical sensor
Damage.
The application for a patent for invention that application publication number is CN103698380A, data of publication of application is 2014.04.02 proposes one
Kind effectively extends the chemical trace amount oxygen analyzer of sensor service life, including air-channel system, sensing system, control system
System, power-supply system and display system, sensing system include the test chamber of sensor and accommodating sensor, test chamber be equipped with into
Gas port and gas outlet, air-channel system include main gas circuit and protection gas circuit, and protection gas circuit is set up in parallel with main gas circuit to be connected with test chamber
Logical air inlet and gas outlet, in order to protect electrochemical sensor, the both sides of test chamber are equipped with to be controlled by control system
Solenoid valve, wherein test chamber constitute sampling cavity and are opened by control system when detecting that the pressure of test chamber both sides is not reciprocity
The solenoid valve of the smaller side of relative pressure and the solenoid valve for closing the larger side of pressure, with electrochemical sensor for this into
Row protection.But chemical trace amount oxygen analyzer control is excessively complicated to the control of pressure, is not easy to implement.
Invention content
The purpose of the present invention is to provide a kind of gas analyzer shells, to solve to protect electrochemical sensing in the prior art
The complex problem of the method for device；In addition, the present invention also aims to provide a kind of gas analyzer using the shell.
To achieve the above object, the technical solution of gas analyzer shell of the invention is：
Gas analyzer shell, be equipped with the sampling cavity for sensors configured in shell, and shell is equipped with to be connected to sampling cavity
Air inlet and gas outlet, the sampling cavity is interior to be equipped with the sensor support structure for being used to support sensor, and sampling cavity includes being used for
The first balance portion being connected to the air inlet of sensor and the second balance portion being connected to for the gas outlet with sensor, institute
The first balance portion is stated to be connected to the second balance portion.
The beneficial effects of the invention are as follows：By the way that sampling cavity is divided into the first balance portion being connected to sensor air inlet
The buffer portion being connected to the gas outlet with sensor, and the two is made to keep connection, cause in tested gas in the first balance portion
Divide and is put down with the air inlet side and air outlet side pressure for making the sensor being placed in sampling cavity in the second balance portion when free diffusing
Weighing apparatus, the method for solving the problems, such as protection electrochemical sensor in the prior art are complex.
Further, in order to further improve the safety of sensor, the air inlet of the sampling cavity is arranged second
In the cavity wall of balance portion, under test gas is made to be balanced via the second balance portion and first before the air inlet for entering sensor
Part avoids the higher under test gas of the pressure of the air inlet side of sensor holder from making to make under test gas reduce certain pressure
At the damage of sensor.
Further, in order to improve the buffering effect under test gas, the sensor support structure includes that setting is taking
It is surrounded for the support ring-shaped step with the support cooperation of the air outlet side of sensor, the support ring-shaped step in the cavity wall of sample chamber
Second balance portion, the support ring-shaped step is equipped with the first balance portion of connection and the buffering of the second balance portion is logical
Road, it is to be measured by reducing by narrow buffer channel when under test gas being made to enter the first balance portion from the second balance portion
The area of passage of gas is to reduce the pressure of the under test gas into the first balance portion.
Further, it processes for convenience, the buffer channel is the dashpot being arranged on support ring-shaped step, is used
The mode of fluting avoids opening up bending hole on support ring-shaped step, and processing technology is simpler.
Further, the shaking in order to avoid sensor in sampling cavity is additionally provided with for making sampling in the sampling cavity
The position limiting structure of the cavity wall of chamber and the sidewall spacers setting of sensor, the side wall and sampling cavity of sensor are avoided by position limiting structure
Cavity wall between collision, avoid the damage of sensor and the abrasion of the cavity wall of sampling cavity.
Further, in order to improve the protection to sensor, the position limiting structure includes being arranged in the cavity wall of sampling cavity
Limit elastic component, avoid the rigid contact between position limiting structure and sensor or the cavity wall of sampling cavity, and in sensor to taking
By limiting impact of the elastic component come buffer sensor to the cavity wall of sampling cavity when the cavity wall movement of sample chamber.
Further, in order to avoid limiting the disengaging installation site of elastic component, the limit elastic component is for being sleeved on
Flexible fastening circle on the side wall of sensor, the position limiting structure further include being arranged in the cavity wall of sampling cavity for assembling elasticity
The fixation ring recess of retainer plate, the fixed ring recess include and the retainer plate cooperation section of flexible fastening circle limit cooperation and are connected to first
The retainer plate Connectivity Section of balance portion and the second balance portion, the groove depth and groove width of the retainer plate Connectivity Section, which are respectively greater than, fixes
The groove depth and groove width of circle cooperation section fix flexible fastening circle by the fixed ring recess of setting, and retainer plate Connectivity Section are arranged to connect
Logical first balance portion and the second balance portion, avoid position limiting structure from blocking the company of the first balance portion and the second balance portion
It is logical, and position limiting structure can make to keep certain interval flat to be connected to first between the cavity wall of sampling cavity and the side wall of sensor
Weighing apparatus part and the second balance portion, avoid the additional processing to the cavity wall of sampling cavity.
Further, in order to facilitate the processing of shell and the assembly of gas analyzer, the shell includes seperated removable
First shell and second shell, the retainer plate Connectivity Section are connected to the binding face of first shell and second shell, facilitate fixation
The processing of Connectivity Section is enclosed, and the assembly of the other components such as sensor is facilitated using seperated removable structure using shell.
Further, in order to reduce the difficulty of processing of shell, the sensor support structure includes being arranged in sampling cavity
Probe for the air inlet side mounted in sensor to be connect and pushed up with sensor signal is popped one's head in by being arranged come pushing tow sensor,
The further processing to shell is avoided, and when using the sensor of different-thickness, the probe that can replace different length comes
It is adapted to sensor, improves the versatility of shell.
Further, in order to avoid the shaking of sensor, the sensor support structure further includes for installing probe
Probe socket and it is arranged between probe and probe socket and makes the elastic component of probe jam sensor to apply pressure to probe, by sets
It sets elastic component to carry out elastic top pressure to sensor, avoids the shaking of sensor.
Further, in order to improve the stability of probe, the probe is slidedly assemblied in spy on the top pressure direction of probe
On headstock, probe is avoided to be bent when being pressed sensor, influences the top pressure effect of probe.
Further, for the ease of practical operation, the signal wire being additionally provided on the sampling cavity for probe stretches out sampling cavity
Thief hole, at the thief hole embedding be useful for the seal of sealing thief hole, the probe socket is inlaid in seal, just
It is connected to the other equipment outside sensor holder in signal wire, also, probe socket is made to be relatively fixed with shell, improve probe press fitting
Stability.
Further, for the ease of practical operation, the signal wire being additionally provided on the sampling cavity for sensor stretches out sampling
The thief hole of chamber, at the thief hole embedding be useful for the seal of sealing thief hole, convenient for signal wire with outside sensor holder
Other equipment connection.
Further, in order to improve the stability of sealing, the hole wall of the thief hole is equipped with block groove, and block is recessed
The groove sidewall of slot coordinates on the axis direction of thief hole with seal block, and sealing structure is avoided to deviate to sample from thief hole
Chamber.
The technical solution of gas analyzer of the present invention is：
Gas analyzer includes sensor and gas analyzer shell, is equipped with the sampling cavity of sensors configured in shell, on shell
Equipped with the air inlet and gas outlet being connected to sampling cavity, the sensor support structure of support sensor is equipped in the sampling cavity,
Sampling cavity includes the first balance portion being connected to the air inlet of sensor and the second balance being connected to the gas outlet of sensor
Part, first balance portion are connected to the second balance portion.
The beneficial effects of the invention are as follows：By the way that sampling cavity is divided into the first balance portion being connected to sensor air inlet
The buffer portion being connected to the gas outlet with sensor, and the two is made to keep connection, cause in tested gas in the first balance portion
Divide and is put down with the air inlet side and air outlet side pressure for making the sensor being placed in sampling cavity in the second balance portion when free diffusing
Weighing apparatus, the method for solving the problems, such as protection electrochemical sensor in the prior art are complex.
Further, in order to further improve the safety of sensor, the air inlet of the sampling cavity is arranged second
In the cavity wall of balance portion, under test gas is made to be balanced via the second balance portion and first before the air inlet for entering sensor
Part avoids the higher under test gas of the pressure of the air inlet side of sensor holder from making to make under test gas reduce certain pressure
At the damage of sensor.
Further, in order to improve the buffering effect under test gas, the sensor support structure includes that setting is taking
With the support ring-shaped step of the air outlet side of sensor support cooperation in the cavity wall of sample chamber, the support ring-shaped step surrounds described
Second balance portion, the support ring-shaped step are equipped with the buffer channel of connection the first balance portion and the second balance portion,
By narrow buffer channel when under test gas being made to enter the first balance portion from the second balance portion, by reducing under test gas
Area of passage to reduce the pressure of the under test gas into the first balance portion.
Further, it processes for convenience, the buffer channel is the dashpot being arranged on support ring-shaped step, is used
The mode of fluting avoids opening up bending hole on support ring-shaped step, and processing technology is simpler.
Further, the shaking in order to avoid sensor in sampling cavity, being additionally provided in the sampling cavity makes sampling cavity
The position limiting structure of cavity wall and the setting of the sidewall spacers of sensor, the chamber of the side wall and sampling cavity of sensor is avoided by position limiting structure
Collision between wall avoids the damage of sensor and the abrasion of the cavity wall of sampling cavity.
Further, in order to improve the protection to sensor, the position limiting structure includes being arranged in the cavity wall of sampling cavity
Limit elastic component, avoid the rigid contact between position limiting structure and sensor or the cavity wall of sampling cavity, and in sensor to taking
By limiting impact of the elastic component come buffer sensor to the cavity wall of sampling cavity when the cavity wall movement of sample chamber.
Further, in order to avoid limiting the disengaging installation site of elastic component, the limit elastic component is for being sleeved on
Flexible fastening circle on the side wall of sensor, the position limiting structure further include being arranged in the cavity wall of sampling cavity for assembling elasticity
The fixation ring recess of retainer plate, the fixed ring recess include and the retainer plate cooperation section of flexible fastening circle limit cooperation and are connected to first
The retainer plate Connectivity Section of balance portion and the second balance portion, the groove depth and groove width of the retainer plate Connectivity Section, which are respectively greater than, fixes
The groove depth and groove width of circle cooperation section fix flexible fastening circle by the fixed ring recess of setting, and retainer plate Connectivity Section are arranged to connect
Logical first balance portion and the second balance portion, avoid position limiting structure from blocking the company of the first balance portion and the second balance portion
It is logical, and position limiting structure can make to keep certain interval flat to be connected to first between the cavity wall of sampling cavity and the side wall of sensor
Weighing apparatus part and the second balance portion, avoid the additional processing to the cavity wall of sampling cavity.
Further, in order to facilitate the processing of shell and the assembly of gas analyzer, the shell includes seperated removable
First shell and second shell, the retainer plate Connectivity Section are connected to the binding face of first shell and second shell, facilitate fixation
The processing of Connectivity Section is enclosed, and the assembly of the other components such as sensor is facilitated using seperated removable structure using shell.
Further, in order to reduce the difficulty of processing of shell, the sensor support structure includes being arranged in sampling cavity
The probe of the air inlet side mounted in sensor is connect and pushed up with sensor signal, by the way that probe is arranged come pushing tow sensor, is avoided
Further processing to shell, and when using the sensor of different-thickness, the probe of different length can be replaced to be adapted to
Sensor improves the versatility of shell.
Further, in order to avoid the shaking of sensor, the sensor support structure further includes for installing probe
Probe socket and it is arranged between probe and probe socket and makes the elastic component of probe jam sensor to apply pressure to probe, by sets
It sets elastic component to carry out elastic top pressure to sensor, avoids the shaking of sensor.
Further, in order to improve the stability of probe, the probe is slidedly assemblied in spy on the top pressure direction of probe
On headstock, probe is avoided to be bent when being pressed sensor, influences the top pressure effect of probe.
Further, for the ease of practical operation, the signal wire being additionally provided on the sampling cavity for probe stretches out sampling cavity
Thief hole, at the thief hole embedding be useful for the seal of sealing thief hole, the probe socket is inlaid in seal, just
It is connected to the other equipment outside sensor holder in signal wire, also, probe socket is made to be relatively fixed with shell, improve probe press fitting
Stability.
Further, for the ease of practical operation, the signal wire being additionally provided on the sampling cavity for sensor stretches out sampling
The thief hole of chamber, at the thief hole embedding be useful for the seal of sealing thief hole, convenient for signal wire with outside sensor holder
Other equipment connection.
Further, in order to improve the stability of sealing, the hole wall of the thief hole is equipped with block groove, and block is recessed
The groove sidewall of slot coordinates on the axis direction of thief hole with seal block, and sealing structure is avoided to deviate to sample from thief hole
Chamber.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment 1 of the gas analyzer of the present invention；
Fig. 2 is the structural schematic diagram at the sensor seat of honour of the specific embodiment 1 of the gas analyzer of the present invention；
Fig. 3 is the upward view of Fig. 2；
Fig. 4 is Fig. 3 along line A-A sectional view；
Fig. 5 be the present invention gas analyzer specific embodiment 1 sensor under seat structural schematic diagram；
Fig. 6 is the vertical view of Fig. 5；
Fig. 7 is the front view of Fig. 5；
Fig. 8 is Fig. 7 along line A-A sectional view；
Fig. 9 is the structural schematic diagram of the locking nut of the specific embodiment 1 of the gas analyzer of the present invention.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the gas analyzer of the present invention, as shown in Figures 1 to 9, gas analyzer includes sensor 13
With the gas analyzer shell being sampled for sensors configured 13 and under test gas, in the present embodiment, sensor 13 is adopted
With more commonly used electrochemical sensor, gas analyzer shell is interior to be equipped with the sampling cavity configured for sensor 13, for convenience
The more emat sensor 13 when sensor 13 damages, therefore shell is split structure, including first shell 1 and second shell 2, the
Two shells 2 are equipped with the air inlet 5 that is connected to sampling cavity and gas outlet 4, and the junction of first shell 1 and second shell 2 is equipped with
Locking nut 3 for first shell 1 and second shell 2 to be secured together directly is rotated when needing replacing sensor 13
It is replaceable sensor 13 that locking nut 3, which opens sampling cavity,.Meanwhile using the gas analyzer for some pernicious gases
The danger that is leaked when being detected and in view of sampling cavity air-tightness for sensor 13 test result influence, therefore
One shell 1 and the binding face of second shell 2 are equipped with seal groove 12, and sealing ring is equipped with so that sampling cavity in seal groove 12
Sealing.Certainly, in other embodiments, shell may be integral structure.
The film in electrochemical sensor employed in the present embodiment is be easy to cause in the case where pressure at both sides is not reciprocity
The damage of electrochemical sensor, therefore, for the pressure of balance sensor both sides, sampling cavity is placed in sensor 13 therein and divides
For upper and lower two parts, wherein the part for being placed in the i.e. air inlet side of sensor 13 in 13 upside of sensor is the first balance portion
7, the part for being placed in the i.e. air outlet side of sensor 13 in 13 downside of sensor is the second balance portion 6, and is passed in the present embodiment
Interval setting is formed between sensor 13 and the internal chamber wall of sampling cavity takes what the second balance portion 6 and the first balance portion 7 were connected to
Sample channel makes the area of passage of under test gas gas when through over sampling channel reduce so that into the first balance portion 7
The pressure reduction of gas avoids the excessive impact to sensor 13 of gas pressure in the first balance portion 7.Certainly, at other
In embodiment, the side wall of sensor 13 can coordinate in clearance fit or transition between the internal chamber wall of sampling cavity, and take
The channel for being connected to the second balance portion 6 with the first balance portion 7 is opened up on the internal chamber wall of sample chamber, to realize to the first balance portion
Divide the purpose of 7 supply gases.
In order to further under test gas into row buffering, the bottom of sampling cavity be equipped with supported with sensor 13 coordinate so that
The downside of sensor 13 forms the support ring-shaped step of the second balance portion 6, and the cavity wall of the second balance portion 6 is equipped with and sampling
The dashpot 601 of channel connection, in the present embodiment, dashpot 601 sets there are four and is circumferentially evenly arranged, second flat by making
Weigh part 6 enter the first balance portion 7 in gas area of passage reduce so that enter sampling channel in gas pressure into
One step reduces.Wherein, dashpot 601 constitutes the buffer channel for being connected to the first balance portion 7 and the second balance portion 6, when
So, in other embodiments, the setting quantity of dashpot 601 is arbitrary, and can be arranged one, can also be arranged two, three
Any amounts such as a.
In the present embodiment, due to being spaced setting between the side wall of sensor 13 and the cavity wall of sampling cavity, in gas point
When analyzer is transported, sensor 13 can shake in sampling cavity, therefore in order to avoid sensor 13 shakes cause in sampling cavity
The collision between the side wall of sensor 13 and the cavity wall of sampling cavity is set to cause the abrasion of the cavity wall of sensor 13 and sampling cavity, first
The cavity wall of the sampling cavity of shell 1 is equipped with fixed ring recess 11, and the side for being set in sensor 13 is equipped in fixed ring recess 11
O-ring seal 10 on wall is kept away when sensor 13 is moved to the cavity wall of sampling cavity by the crimp of O-ring seal 10
Collision simultaneous buffering between no-sensor 13 and the madial wall of sampling cavity falls impact of the sensor 13 to the cavity wall of sampling cavity.This
The setting of O-ring seal 10 actually makes to close between sampling channel and the first balance portion 7 in embodiment, therefore the present embodiment
Middle fixed ring recess 11 includes two parts, and a part coordinates section 111, another portion for the retainer plate coordinated with the limit of O-ring seal 10
Be divided into connection the first balance portion 7 and the second balance portion 6 retainer plate Connectivity Section 112, the groove depth of retainer plate Connectivity Section 112 and
Groove width is respectively greater than the groove depth and groove width of retainer plate cooperation section 111, also, in the present embodiment, and retainer plate Connectivity Section 112 is equipped with four
It is a and be circumferentially evenly arranged.Meanwhile retainer plate Connectivity Section 112 can not only play connection the first balance portion 7 and second it is flat
Weigh part 6 effect, but also can make sampling channel enter the first balance portion 7 gas area of passage reduce so that into
The gas pressure entered in the first balance portion 7 further decreases, and avoids the damage of sensor 13.In view of retainer plate Connectivity Section
112 difficulty of processing, in the present embodiment, retainer plate Connectivity Section 112 is connected to the binding face of first shell 1 and second shell 2, is adopted
Retainer plate Connectivity Section 112 can be processed with slotting cutter.Wherein, retainer plate Connectivity Section 112 constitutes logical for being connected to sampling
The balance channel in road, balance channel, sampling channel and buffer channel are constituted for by the second balance portion 6 and the first balance portion
The protection gas circuit of 7 connections, O-ring seal 10 constitute flexible fastening circle, and flexible fastening constitutes limit elastic component, 11 He of fixed ring recess
O-ring seal 10 constitutes the position limiting structure for making the sidewall spacers of the cavity wall of sampling cavity and sensor 13 be arranged.Certainly, at it
In his embodiment, elastic spacing one can be provided in the elastic rubber limited block in the cavity wall of sampling cavity；Position limiting structure also may be used
Think the annular protrusion being arranged on the side wall of sensor 13, and flexible fastening circle may be conventional seals circle；Retainer plate
Slot 11 can also be arranged in the cavity wall of the sampling cavity of second shell 2.
In the present embodiment, sensor 13 shakes in sampling cavity in order to prevent, and several probes 15 are additionally provided in shell and are used
In the probe socket 14 of installation probe 15, probe socket 14 is tubular structure, and probe 15, which is installed in probe socket 14, to be made probe 15 and visit
Headstock 14 is slidably matched, and spring is equipped in probe socket 14, and probe 15 is stretched into counter balance pocket 7 under the pushing tow of spring by sensor 13
Top prevents teetertottering for sensor 13, and probe 15 and probe socket 14 are slidably matched and improve 15 top of probe in sampling cavity
The stability of dress avoids spring bending from causing the failure of probe 15.Wherein, probe 15 can not only play fixed sensor 13
Effect, and also acts as effect connect with 13 signal of sensor, and on probe 15 or probe socket 14 is equipped with being used for and next stage
The signal wire of electric unit signal connection, shell are equipped with the thief hole 9 passed through for signal wire, and signal wire passes through thief hole 9 real
Existing sensor 13 is connect with the signal of next stage electric unit.Certainly, ring-shaped step is may also set up in the cavity wall of sampling cavity, annular
Step is equipped with the contact being connect with 13 signal of sensor, and contact is equipped with the signal wire for stretching out sampling cavity, on sensor 13
When lower shaking, block coordinates between the downside and the upper surface of sensor 13 of ring-shaped step, avoids the shaking of sensor 13, and
And the transducing signal that the setting of contact measures sensor exports；Probe 15 can be tubular structure and sliding sleeve is mounted in probe socket
On 14, spring is equipped in probe 15, probe 15 realizes the compression to sensor 13, certainly, ring-shaped step by the pushing tow of spring
On can also be not provided with the effect that contact functions only as block, setting signal line realizes that the signal of sensor 13 is defeated on sensor 13
Go out.Wherein, spring constitutes the probe socket 14 for installing probe 15 and is arranged between probe 15 and probe socket 14 with to probe
15 application pressure make the elastic component of 15 jam sensor 13 of probe, support ring-shaped step, probe 15, probe socket 14 and spring constitute
It is used to support the sensor support structure of sensor 13.
In the present embodiment, it is contemplated that influence of the setting thief hole 9 to housing seal effect, at thief hole 9 embedding have sealing
Resin 8, sealing resin 8 is deviate from from thief hole 9 in order to prevent, therefore the hole wall of the thief hole 9 of first shell 1 is equipped with block
Groove 16, block groove 16 in a ring, when sealing resin 8 is when relative displacement occurs for axis direction and the shell of thief hole 9, gear
Only the groove sidewall of groove 16 coordinates with 8 block of sealing resin, avoids the abjection of sealing resin 8.Also, in view of 15 press fitting of probe
The stability of sensor 13, probe socket 14 are inlaid in sealing resin 8, avoid the inclination of probe 15, wherein block groove 16
Shape can not be annular, or along the groove of thief hole 9 radially extended, sealing resin 8 is constituted for sealing sampling
The seal in hole 9, certainly, in other embodiments, seal may be rubber stopper of the plug at thief hole 9, rubber stopper
It is equipped with the signal wire passed through for signal wire to perforate, and the diameter of signal wire perforation is less than the diameter of signal wire, passes through rubber stopper
Plug dress realize sampling cavity sealing.
When carrying out gas analysis using the gas analyzer, under test gas enters the second balance portion 6 from air inlet 5,
It passes sequentially through dashpot 601, sampling channel, fix in 112 the first balance portion 7 of entrance of ring recess Connectivity Section, make 13 liang of sensor
The pressure of side is equal, avoids the damage of sensor 13.
The gas analyzer of the present invention can be used in in the analysis of hydrogen, oxygen, it is also possible to gas such as methane, acetylene
Only need to be with the corresponding biography of under test gas by replacing sensor when needing to be detected different gas in the analysis of body
Sensor.
Above-mentioned specific embodiment 1 is the optimal embodiment of the gas analyzer of the present invention, in other embodiment, Ke Yigen
Corresponding structure is adjusted or is simplified according to needs：
The specific embodiment 2 of the gas analyzer of the present invention simplifies the structure of gas analyzer, gas analysis in the present embodiment
Instrument includes sensor and gas analyzer shell, the sampling cavity of sensors configured is equipped in shell, shell is equipped with and sampling cavity
The air inlet of connection and gas outlet, it is characterised in that：It is equipped with the sensor support structure of support sensor in the sampling cavity, takes
Sample chamber includes the first balance portion being connected to the air inlet of sensor and the second balance portion being connected to the gas outlet of sensor
Point, first balance portion is connected to the second balance portion, is connected to sensor air inlet by being divided into sampling cavity
First balance portion and the buffer portion being connected to the gas outlet of sensor, and the two is made to keep connection, cause in tested gas
Make the air inlet side for the sensor being placed in sampling cavity when free diffusing in the first balance portion and the second balance portion and goes out
Gas port side pressure dynamic balance, the method for solving the problems, such as protection electrochemical sensor in the prior art are complex.
Specific embodiment 3, as advanced optimizing to specific embodiment 2, the setting of the air inlet of the sampling cavity is the
In the cavity wall of two balance portions.Certainly, in other embodiments, the air inlet of sampling cavity can also be arranged in the first balance portion
Cavity wall on, the interval between the side wall of sensor and the cavity wall of sampling cavity can also be set.
Specific embodiment 4, as advanced optimizing to specific embodiment 3, the sensor support structure includes setting
It is surrounded with the support ring-shaped step of the air outlet side of sensor support cooperation, the support ring-shaped step in the cavity wall of sampling cavity
Second balance portion, the support ring-shaped step is equipped with the first balance portion of connection and the buffering of the second balance portion is logical
Road.Certainly, in other embodiments, support ring-shaped step could alternatively be the supporting block being arranged below sensor, supporting block
It can be installed in the cavity wall of sampling cavity, also can be used as the lower section that movable part is placed on sensor, the interval structure between supporting block
At the buffer channel of connection the first balance portion and the second balance portion.
Specific embodiment 5, as advanced optimizing to specific embodiment 3, the buffer channel is to be arranged in support ring
Dashpot on shape step.Certainly, in other embodiments, buffer channel can be the bending being arranged on support ring-shaped step
Hole.
Specific embodiment 6 is also set as advanced optimizing to any of specific embodiment 2-5 in the sampling cavity
There is the position limiting structure of the sidewall spacers setting of the cavity wall and sensor that make sampling cavity.Certainly, in other embodiments, in sampling cavity
Also position limiting structure can be not provided with.
Specific embodiment 7, as advanced optimizing to specific embodiment 6, the position limiting structure includes that setting is sampling
Limit elastic component in the cavity wall of chamber.Certainly, in other embodiments, position limiting structure may be rigid member.
Specific embodiment 8, as advanced optimizing to specific embodiment 7, the limit elastic component is for being sleeved on
Flexible fastening circle on the side wall of sensor, the position limiting structure further include being arranged in the cavity wall of sampling cavity for assembling elasticity
The fixation ring recess of retainer plate, the fixed ring recess include and the retainer plate cooperation section of flexible fastening circle limit cooperation and are connected to first
The retainer plate Connectivity Section of balance portion and the second balance portion, the groove depth and groove width of the retainer plate Connectivity Section, which are respectively greater than, fixes
The groove depth and groove width of circle cooperation section.Certainly, in other embodiments, it can be also not provided with fixed ring recess, it is real by flexible fastening circle
The limit of existing sensor.
Specific embodiment 9, as advanced optimizing to specific embodiment 8, the shell includes removable first of fission
Shell and second shell, the retainer plate Connectivity Section are connected to the binding face of first shell and second shell.Certainly, in other realities
It applies in example, shell may be integral structure, and retainer plate Connectivity Section can also be only the slot of a side opening.
Specific embodiment 10, as advanced optimizing to any of specific embodiment 2-5, the sensor support knot
Structure includes that the probe that the air inlet side mounted in sensor is connect and pushed up with sensor signal is arranged in sampling cavity.Certainly, at it
In his embodiment, probe can not also be set, by the ring-shaped step or block being arranged in sampling cavity, in the air inlet of sensor
The first balance portion is formed between side and the upper cavity wall of sampling cavity.
Specific embodiment 11, as advanced optimizing to specific embodiment 10, the sensor support structure further includes
Probe socket and setting for installing probe make probe jam sensor between probe and probe socket to apply pressure to probe
Elastic component.In the present embodiment, elastic component can be the flexible parts such as rubber block and spring.Certainly, in other implementations
Example in, probe can also rigid top dress on a sensor.
Specific embodiment 12, as advanced optimizing to specific embodiment 11, the probe is in the top pressure direction of probe
On be slidedly assemblied on probe socket.Certainly, in other embodiments, probe, which can also be sleeved on probe socket, realizes probe and visits
Headstock is slidably matched.
Specific embodiment 13 is additionally provided on the sampling cavity as advanced optimizing to specific embodiment 11 for probe
Signal wire stretch out the thief hole of sampling cavity, at the thief hole embedding be useful for the seal of sealing thief hole, the probe
Seat is inlaid in seal.In the present embodiment, seal can be the sealing resin being potted at thief hole, or plug dress
Rubber stopper at thief hole, rubber stopper are equipped with the signal wire installed for signal wire and perforate, and the aperture of signal wire perforation
Less than the outer diameter of signal wire；Probe socket movable can be assemblied in sampling cavity and push up on the lower surface of seal.
Specific embodiment 14, as advanced optimizing to any of specific embodiment 2 to 5, on the sampling cavity also
Equipped with the thief hole for stretching out sampling cavity for the signal wire of sensor, at the thief hole embedding be useful for the sealing of sealing thief hole
Body.In the present embodiment, seal can be the sealing resin being potted at thief hole, or rubber of the plug at thief hole
Rubber plug, rubber stopper are equipped with the signal wire installed for signal wire and perforate, and the aperture of signal wire perforation is less than the outer of signal wire
Diameter.
Specific embodiment 15, as advanced optimizing to specific embodiment 14, the hole wall of the thief hole is equipped with gear
Only groove, and the groove sidewall of block groove coordinates on the axis direction of thief hole with seal block.Certainly, in other implementations
In example, the aperture of thief hole can be also set to be less than the diameter of the horizontal cross-section of sampling cavity, and then realize the abjection for avoiding seal.
The specific embodiment of the gas analyzer shell of the present invention, the gas point of the gas analyzer shell and the present invention
Gas analyzer shell described in any of specific embodiment 1-15 of analyzer is identical, repeats no more.
Claims (10)
1. gas analyzer shell, the interior sampling cavity being equipped with for sensors configured of shell, shell are equipped with and are connected to sampling cavity
Air inlet and gas outlet, it is characterised in that：It is equipped with the sensor support structure for being used to support sensor in the sampling cavity, takes
Sample chamber includes the first balance portion being connected to for the air inlet with sensor and be connected to for the gas outlet with sensor
Two balance portions, first balance portion are connected to the second balance portion.
2. gas analyzer shell according to claim 1, it is characterised in that：The air inlet setting of the sampling cavity is the
In the cavity wall of two balance portions.
3. gas analyzer shell according to claim 2, it is characterised in that：The sensor support structure includes setting
For the support ring-shaped step with the support cooperation of the air outlet side of sensor, the support ring-shaped step in the cavity wall of sampling cavity
Surround second balance portion, the support ring-shaped step is equipped with the slow of the first balance portion of connection and the second balance portion
Rush channel.
4. gas analyzer shell according to claim 3, it is characterised in that：The buffer channel is to be arranged in support ring
Dashpot on shape step.
5. the gas analyzer shell according to any one of claim 1-4, it is characterised in that：It is also set in the sampling cavity
It is useful for the position limiting structure for making the cavity wall of sampling cavity and the sidewall spacers of sensor be arranged.
6. gas analyzer shell according to claim 5, it is characterised in that：The position limiting structure includes that setting is sampling
Limit elastic component in the cavity wall of chamber.
7. gas analyzer shell according to claim 6, it is characterised in that：The limit elastic component is for being sleeved on
Flexible fastening circle on the side wall of sensor, the position limiting structure further include being arranged in the cavity wall of sampling cavity for assembling elasticity
The fixation ring recess of retainer plate, the fixed ring recess include and the retainer plate cooperation section of flexible fastening circle limit cooperation and are connected to first
The retainer plate Connectivity Section of balance portion and the second balance portion, the groove depth and groove width of the retainer plate Connectivity Section, which are respectively greater than, fixes
The groove depth and groove width of circle cooperation section.
8. gas analyzer shell according to claim 7, it is characterised in that：The shell includes seperated removable first shell
Body and second shell, the retainer plate Connectivity Section are connected to the binding face of first shell and second shell.
9. the gas analyzer shell according to any one of claim 1-4, it is characterised in that：The sensor support knot
Structure includes the probe being arranged in sampling cavity for the air inlet side mounted in sensor to be connect and pushed up with sensor signal.
10. gas analyzer, including sensor and gas analyzer shell, the gas analyzer shell is claim 1-9
Any one of described in gas analyzer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372924.2A CN108333235A (en) | 2018-04-24 | 2018-04-24 | Gas analyzer shell and the gas analyzer for using the shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372924.2A CN108333235A (en) | 2018-04-24 | 2018-04-24 | Gas analyzer shell and the gas analyzer for using the shell |
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| CN108333235A true CN108333235A (en) | 2018-07-27 |
Family
ID=62933525
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| CN201810372924.2A Pending CN108333235A (en) | 2018-04-24 | 2018-04-24 | Gas analyzer shell and the gas analyzer for using the shell |
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