CN108333315A - A kind of gas detector with bionical flow-guiding structure and variable level sensor - Google Patents
A kind of gas detector with bionical flow-guiding structure and variable level sensor Download PDFInfo
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- CN108333315A CN108333315A CN201810314013.4A CN201810314013A CN108333315A CN 108333315 A CN108333315 A CN 108333315A CN 201810314013 A CN201810314013 A CN 201810314013A CN 108333315 A CN108333315 A CN 108333315A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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Abstract
A kind of gas detector category gas componant detection technique field with bionical flow-guiding structure and variable level sensor, the present invention is sprayed into gas in inner cavity from front end by extraneous means, after the detection of the toxic and harmful gas sensor of center support front end, after water conservancy diversion board group water conservancy diversion with space and time difference each sensor contacts, after primarily determining ingredient, Related Component sensor is placed in strong stimulation area through motor drive for driving member or other rational positions continue to detect, gas then flows through supporting guide plate group and is contacted with the wide area gas sensor of rearmost, it tests whether to contain other submembers, electronic nose is finally discharged.Bionical water conservancy diversion board group cooperates with shell, so that strong, the weak stimulation area of gas is become apparent from, can strengthen Effect on Detecting, error caused by reduction interferes with each other, make that gas detector is sensitiveer to the detection of gas componant, result is accurate and simple and efficient to handle, gas concentration is required low.
Description
Technical field
The invention belongs to unknown gas composition detection technical fields, and in particular to one kind having bionical cavity and removable sensing
The gas componant detector of device.
Background technology
1, oil shale is worldwide acknowledged as the preferred alternative energy source of conventional gas and oil, becomes countries in the world in the energy
The important standby energy that must take into consideration in strategic balance development.In oil shale formation, hydrocarbon gas content is higher, by boring
Generate during well gas hydrocarbon gas concentration detection may be implemented to oil shale formation be accurately positioned and content analysis.
2, electronic nose, that is, gas detector is a kind of gas detecting instrument for copying mammalian sense of smell organ to develop, due to
Electronic nose detection has the characteristics that high reliability, high practicability and short recognition cycle, is examined in food and drink production industry, environment
The fields such as survey, medicine and agricultural are widely used.But traditional electronic nose mostly improves gas concentration, the calculating of optimization later stage using artificial
The methods of optimization result of detection, this directly limits the application range and application environment of electronic nose, and affects to a certain extent
The accuracy of testing result.By being rationally designed to electronic nose inside cavity, using biology biological characteristics with it is bionical
It learns in conjunction with the gas signal of sensor reception is optimized, has that easy to operate, suitable environment is wide, detection ingredient is more, operation result
More preferably advantage, and have no optimize to optimize the electronic nose of result of detection exclusively with cavity body structure at present.
3, it is sensitive with the space structure in mouse nasal cavity so that muroid possesses for muroid nose intracavity gas " it " font flow trace
Smell.In the back side crypts area of mouse nasal cavity and proparea, gas flow rate is very fast, and more olfactory cells and cilium is distributed with.In
Area successively decreases successively with back zone gas flow rate, and olfactory cell density reduces.This phenomenon of muroid nasal cavity is applied to counter structure
In electronic nose cavity, the present situation of single algorithm optimization can only be utilized by improving electronic nose at this stage.
Invention content
The purpose of the present invention is to provide a kind of bionic electronic nose for oil shale sniff and solve current electronic nose only
Later stage algorithm, which can be optimized, leads to the unconspicuous problem of effect of optimization.The electronic nose is according to muroid nasal cavity olfactory cell and smells fibre
The interactive design bionic electronic nose of hair distribution and gas flow rate in muroid nasal cavity, makes it have good flow conductivity and measures
Precision, while moveable sensor group is designed in electronic nose, realize the otherness distribution of multiple sensors in space, profit
The time difference opposite sex of signal is received with different sensors and Spatial Difference promotes electronic nose sniff ability.
The present invention is by shell A, center support B, variable level sensor group C, aft mount D, tail portion ring plate E, motor F, spiral shell
Rasp bar G and fulcrum post H compositions, wherein five variable level sensors of variable level sensor group C are assemblied in the sliding rail of center support B
In five sliding rails of group 5, and the pedestal 14 of five sensors and the sliding rail of slide rail group 5 are slidably connected；In one period, five
It is engaged with threaded rod G 14 bottom of pedestal in sensor only there are one sensor.The six of water conservancy diversion gripper shoe groups 11 in aft mount D
The top of a water conservancy diversion support plate and upper three section III of the grooves 1 of shell A are affixed.Six stabilizer blades and tail of stabilizer blade group 6 in center support B
Blind hole I 10 on portion bearing D is affixed.4 outer end of center support B upper backup pads group and leading portion I in shell A and two section of II nearly left part
Inner wall is tangent, and can be dismounted if necessary.Threaded rod G is across slide rail group 5 in the through-hole 9, center support B of aft mount D
The enclosed center of five sliding rails, the left end blind hole II 15 of threaded rod G is flexibly connected with the pin II 18 of fulcrum post H, fulcrum post H's
III m of blind hole of pin I 17 and center support B is affixed.The longitudinal axis of threaded rod G is parallel with the longitudinal axis of shell A, misaligned.Electricity
The output shaft of machine H and threaded rod G right ends are affixed.
The tail portion ring plate E is affixed using glued mode and aft mount D, and the internal rail 16 and threaded rod G of tail portion ring plate is right
The annular groove n flexible connections in portion.
The column of the shell A, center support B, variable level sensor group C, aft mount D, tail portion ring plate E and fulcrum post H
I 17 axis of pin overlaps, and II 18 axis of pin of threaded rod G and fulcrum post H overlap, and two axial lines are mutually parallel, and distance is 1-3mm.
The shell A is linked in sequence for I, two section II, three section III and four section IV by leading portion, and the overall length L1 of shell A is
The thickness h 2 of 100-150mm, shell A are 6-12mm.Wherein two section II, three sections III and four section IV is pipe,
Two section II of length L4 is 40-75mm, and diameter d3 is 46-56mm.
Three section III of length L3 is 40-55mm, and diameter d2 is 60-68mm, and three section of III inner wall is recessed equipped with being uniformly distributed along the circumference
Six grooves of slot group 1, recess width h2 are 3-5mm.
Four section IV of length L2 is 40-55mm, and diameter d1 is 60-80mm.
The diameter d4 of the left end of leading portion I is 4-8mm, and the longitudinal axis of the circumference of leading portion 3 by a-b curves along shell A revolves
Circle gained, and the mathematic(al) representation of a-b curves is：When taking b points to be origin, to cross b points and parallel with shell A longitudinal axis straight
Line is x-axis, is to the right positive direction of the x-axis, crosses b points and is y-axis perpendicular to x-axis, when establishing coordinate system upwards for positive direction of the y-axis, table
It is up to formula：
7.3 × 10-2x2+6.3 of y=1.7 × 10-3x3-× 10-2x-0.207.
The center support B is made of stabilizer blade group 6, slide rail group 5 and water conservancy diversion board group 3, wherein water conservancy diversion board group 3, slide rail group
5, standalone sensor 8 and stabilizer blade group 6 are ranked sequentially from left to right, six of the affixed stabilizer blade group of five sliding rail right ends of slide rail group 56
Stabilizer blade, the six sliding rail left ends and the right end of water conservancy diversion board group 3 of slide rail group 5 are affixed, uniformly distributed support plate on the excircle of water conservancy diversion board group 3
The left end center of three support plates of group 4, water conservancy diversion board group 3 is equipped with sensor placed hole 2.
The standalone sensor 8 is fixed in the wide guide rail upper surface center line of slide rail group 5,8 left end of standalone sensor with lead
The distance L7 of 3 right end of flowing plate group is 5-9mm, the 13 size phase of pipe of 8 pipe size of standalone sensor and variable level sensor group C
Together, internal diameter 9-12mm, wide 5-10mm.
2 central axes of sensor placed hole are overlapped with gas detector central axes, and diameter d2For 8-12mm, a length of diameter
0.75 times.
The left end center outer rim of water conservancy diversion board group 3 is equipped with the guide ring 7 with fusiformis section.
3 long L of water conservancy diversion board group1For 15-30mm, outer layer revolving structure radius r2For 14-22mm, middle level revolving structure radius
r1For 12-18mm, and contain center thickness L6For the fusiformis section guide ring 7 of 2-4mm, wherein：
It is to the left positive direction of the x-axis using the places f-i straight line as x-axis when taking f points to be origin, crosses f points and be y perpendicular to x-axis
Axis, when establishing coordinate system upwards for positive direction of the y-axis,
C-d sections of curvilinear equations are：Y=-3.3 × 10-2x2+0.492x+11.338
J-e sections of curvilinear equations are：2 × 10-2x2+0.236x+2.985 of y=7 × 10-4x3-
I-k-f sections of curvilinear equations are：Y=-0.01x2+0.2x
I-l-f sections of curvilinear equations are：Y=0.01x2-0.2x
H-g sections of curvilinear equations are：Y=-7 × 10-4x3+2 × 10-2x2-0.236x-2.985.
The variable level sensor group C is made of five sensors, and sensor is tubular, and the outside of pipe 13 is equipped with
Pedestal 14；13 internal diameter of pipe is 9-12mm, wide 5-10mm.
The aft mount D overall length 40-55mm, are made of, tail six rib pipes, sensor group 12 and water conservancy diversion gripper shoe groups 11
The center of portion bearing D is equipped with through-hole 9, diameter 6-9mm；Left end tube wall is equipped with the blind hole group 10 being made of six blind holes, and blind hole is long
It is affixed with the stabilizer blade group 6 of center support B for 5-7mm；11 long 25-32mm of water conservancy diversion gripper shoe groups, width 1-3mm, high 23-28mm, are gathered around
There are six water conservancy diversion support plates that a diameter of 1-3mm of chamfering is included to be distributed in six corner angle of six rib pipe left parts, angle α is 60 °,
Three sensors of sensor group 12 are distributed on three faceted pebbles of six rib pipe right parts, the high 10-15mm in the sensor center of circle, diameter 8-
10mm, wall thickness 1-2mm.
The tail portion ring plate E width is 2-3mm, the annular through-hole that contained internal rail 16 is 300 °, internal rail center line distance
Tail portion ring plate E axial line distances are 1-3mm.
The pin I 17 of the fulcrum post H and pin II 18 a diameter of 1-1.5mm, a length of 2-4mm；Pin I 17 and pin
II 18 axis are parallel, and distance is 1-3mm.Fulcrum post total length is 4-8mm.
The course of work and principle of the present invention is as follows：Sensor placed hole 2, standalone sensor 8, variable level sensor group C
Toxic harmful gas sensor a, toxic and harmful gas sensor b, gas active ingredient sensing are placed respectively with sensor group 12
Device c-g and wide area gas sensor h-j.Air exhauster positioned at electronic nose rear works, and under test gas is sucked in the electronic nose.
Under test gas first passes around toxic and harmful gas sensor a, measures whether gas contains harmful ingredient.If so,
Then can in time replacement operation with detection place, prevent measure with exploitation personnel's poisoning occur.Under test gas then passes through
Enter where variable bit sensor group C after being contacted again check toxicity with toxic and harmful gas sensor b after 3 water conservancy diversion of water conservancy diversion board group
It is reacted with gas active ingredient sensor c-d in region.3 end of water conservancy diversion board group is the strong stimulation area of gas, is located at gas herein
It is more notable that active ingredient sensor measures effect.
Situation one, if not detecting preposition gas active ingredient sensor c tie elements the gas of postposition effectively at
Sub-sensor e has signal, then gas active ingredient sensor e is sent to strong stimulation area by rotating threaded rod G using motor,
Gas active ingredient sensor c is retracted into weak stimulation area, interference gas is avoided to measure, and weak stimulation area continue measure whether there is or not right
Answer gas componant；
Situation two, if the expected gas componant for needing to measure is complicated, ingredient I, II occupies main status, ingredient III, IV, V
Back burner is occupied, then the sensor of measuring component I, II can be placed in strong stimulation area by threaded rod G using motor, will measured
The sensor of ingredient III, IV, V is placed in weak stimulation area using motor by threaded rod G, avoids because sensor is located at same put down
Face and mutual flow-disturbing, improve measurement accuracy；
In addition to this, gas with various ingredient possesses different optimum measurement flow velocitys, can be changed in level sensor group C by adjusting
The relative position of sensor can select optimum measurement area, improve measurement accuracy when gas with various ingredient measures simultaneously.It is variable
The different spaces distribution of sensor makes gasmetry signal have otherness in level sensor group C, and the later stage is facilitated to calculate.Gas passes through
After crossing variable level sensor group C, by the water conservancy diversion again of water conservancy diversion gripper shoe groups 11, the wide area gas sensing in sensor group 12 is flowed through
Device h-j measures other submembers that may be present.
Using threaded rod G, can redistributing spatially be carried out to can be changed level sensor group C in time, avoided repeatedly
The troublesome operation of more emat sensor saves time and raw material, simplifies operation while improving measurement accuracy.
The shifting principle of variable level sensor group C is：By the angle for manually changing motor F and affixed threaded rod G
So that the screw thread of threaded rod G is engaged with the pedestal 14 of required sensor in sensor group C, starts motor control threaded rod later and turn
It is dynamic, relative position of institute's engagement sensor in slide rail group 5 is changed by screw thread rotation；Repeat this step, you can change variable
The space distribution situation of sensor in level sensor group C.
Beneficial effects of the present invention
1. have preposition sensor placed hole, toxic harmful gas sensor can be loaded, accomplish early warning hazard component,
Prevent production accident.
2. the flow-guiding structure with biomimetic features, increases the sensitivity and reliability of gas detection.
3. the variable level sensor with changeable relative position, it is only same in same two dimensional surface to change gas sensor
When the present situation that detects, not only reduce the flow-disturbing interference between different sensors, also add the three dimensions inspection of gas signal
Survey ability solves gas with various ingredient optimum measurement flow velocity different problems.
4. detector operation is simple, convenient for disassembly and assembly, replaceable different sensors collocation uses, and has detection in the short time
The ability of a variety of gas with various.
Description of the drawings
Fig. 1 is the structural schematic diagram with bionical flow-guiding structure Yu the gas detector of variable level sensor
Fig. 2 is the right view with bionical flow-guiding structure Yu the gas detector of variable level sensor
Fig. 3 is H-H section views in Fig. 2
Fig. 4 is the structural schematic diagram of shell A
Fig. 5 is the left view of shell A
Fig. 6 is that shell A faces semi-cutaway
The structural schematic diagram of bearing B centered on Fig. 7
Schematic diagram cuts open in the office of facing of bearing B centered on Fig. 8
The left view of bearing B centered on Fig. 9
Bearing B flow-guiding structure curve synoptic diagrams centered on Figure 10
Figure 11 is the right view of slide rail group 5
Figure 12 is the structural schematic diagram of aft mount D
Figure 13 faces semi-cutaway for aft mount D's
Figure 14 is the left view of aft mount D
Figure 15 is the structural schematic diagram of variable level sensor group C single-sensor framves
Figure 16 is the left view of variable level sensor group C
Figure 17 is the schematic diagram of tail portion ring plate E
Figure 18 is the left view of tail portion ring plate E
Figure 19 is the schematic diagram of threaded rod G
Figure 20 is the schematic diagram of threaded rod G left part blind holes
Figure 21 is the schematic diagram of fulcrum post H
Figure 22 is the schematic diagram on the cylindrical surfaces fulcrum post H
Wherein：A. shell B. center supports C. can be changed the tail portions level sensor group D. aft mount E. ring plate F. motor G. screw threads
3. water conservancy diversion board group of bar H. fulcrum posts I, leading portions, bis- section III of II, tri- section IV of, tetra- section 1. of, 2. sensor placed holes of groove group, 4. support plate
7. fusiformis section 10. blind hole of guide ring 8. standalone sensor, 9. through-hole of group 5. slide rail group, 6. stabilizer blade group, I 11. water conservancy diversion gripper shoe groups
12. I 18. pin of sensor group 13. sensor mounting groove, 14. pedestal, 15. blind hole, II 16. internal rail, 17. pin, II m. blind hole n. rings
Shape slot
Specific implementation mode
It is illustrated below in conjunction with attached drawing
As shown in Figure 1-Figure 3, the present invention is by shell A, center support B, variable level sensor group C, aft mount D, tail portion
Ring plate E, motor F, threaded rod G and fulcrum post H compositions, wherein five variable level sensors of variable level sensor group C are assemblied in
In five sliding rails of the slide rail group 5 of center support B, and the pedestal 14 of five sensors and the sliding rail of slide rail group 5 are slidably connected；One
In a period, 14 bottom of pedestal in five sensors only there are one sensor is engaged with threaded rod G, to pass through threaded rod
G rotations drive sensor movement, remaining four sensor to be in non-engagement state with threaded rod G at this time.
Upper three section III of the groove of the top of six water conservancy diversion support plates of water conservancy diversion gripper shoe groups 11 and shell A 1 in aft mount D
It is affixed.
Six stabilizer blades of stabilizer blade group 6 and the blind hole I 10 on aft mount D are affixed in center support B；It is propped up on center support B
4 outer end of fagging group and the inner wall of leading portion I and two section of II nearly left part in shell A are tangent, and can be dismounted if necessary.
Threaded rod G is across the enclosed center of five sliding rails of slide rail group 5 in the through-hole 9, center support B of aft mount D, screw thread
The left end blind hole II 15 of bar G is flexibly connected with the pin II 18 of fulcrum post H, and the pin I 17 and center support B's of fulcrum post H is blind
III m of hole is affixed；The longitudinal axis of threaded rod G is parallel with the longitudinal axis of shell A, misaligned；The output shaft of motor F is right with threaded rod G
It holds affixed.
The tail portion ring plate E is affixed using glued mode and aft mount D, and the internal rail 16 and threaded rod G of tail portion ring plate is right
The annular groove n flexible connections in portion, play the role of positioning to threaded rod G axis and entire detector axis relative position, ensure simultaneously
Threaded rod G not will produce excessive deformation and vibration at work.
The column of the shell A, center support B, variable level sensor group C, aft mount D, tail portion ring plate E and fulcrum post H
I 17 axis of pin overlaps, and II 18 axis of pin of threaded rod G and fulcrum post H overlap, and two axial lines are mutually parallel, and distance is 1-3mm.
As shown in Figure 4-Figure 6, the shell A is linked in sequence for I, two section II, three section III and four section IV by leading portion, outside
The overall length L1 of shell A is 100-150mm, and the thickness h 2 of shell A is 6-12mm.Wherein two section II, three sections III and four section IV is
Pipe,
Two section II of length L4 is 40-75mm, and diameter d3 is 46-56mm
Three section III of length L3 is 40-55mm, and diameter d2 is 60-68mm, and three section of III inner wall is recessed equipped with being uniformly distributed along the circumference
Six grooves of slot group 1, recess width h2 are 3-5mm；
Four section IV of length L2 is 40-55mm, and diameter d1 is 60-80mm.
The diameter d4 of the left end of leading portion I is 4-8mm, and the longitudinal axis of the circumference of leading portion 3 by a-b curves along shell A revolves
Circle gained, and the mathematic(al) representation of a-b curves is：When taking b points to be origin, to cross b points and parallel with shell A longitudinal axis straight
Line is x-axis, is to the right positive direction of the x-axis, crosses b points and is y-axis perpendicular to x-axis, when establishing coordinate system upwards for positive direction of the y-axis, table
It is up to formula：
7.3 × 10-2x2+6.3 of y=1.7 × 10-3x3-× 10-2x-0.207.
As shown in Fig. 7-Figure 10, the center support B is made of stabilizer blade group 6, slide rail group 5 and water conservancy diversion board group 3, wherein leading
Flowing plate group 3, slide rail group 5, standalone sensor 8 and stabilizer blade group 6 are ranked sequentially from left to right, and five sliding rail right ends of slide rail group 5 are solid
Six stabilizer blades of stabilizer blade group 6 are connect, the six sliding rail left ends and the right end of water conservancy diversion board group 3 of slide rail group 5 are affixed, outside water conservancy diversion board group 3
Three support plates of uniformly distributed gripper shoe groups 4 on circumference, the left end center of water conservancy diversion board group 3 are equipped with sensor placed hole 2.
The standalone sensor 8 is fixed in the wide guide rail upper surface center line of slide rail group 5,8 left end of standalone sensor with lead
The distance L7 of 3 right end of flowing plate group is 5-9mm, the 13 size phase of pipe of 8 pipe size of standalone sensor and variable level sensor group C
Together, internal diameter 9-12mm, wide 5-10mm；2 central axes of sensor placed hole are overlapped with gas detector central axes, and diameter d2For
8-12mm, 0.75 times of a length of diameter.
The left end center outer rim of water conservancy diversion board group 3 is equipped with the guide ring 7 with fusiformis section；3 long L of water conservancy diversion board group1For 15-
30mm, outer layer revolving structure radius r2For 14-22mm, middle level revolving structure radius r1For 12-18mm, and contain center thickness
L6For the fusiformis section guide ring 7 of 2-4mm, wherein：
It is to the left positive direction of the x-axis using the places f-i straight line as x-axis when taking f points to be origin, crosses f points and be y perpendicular to x-axis
Axis, when establishing coordinate system upwards for positive direction of the y-axis,
C-d sections of curvilinear equations are：Y=-3.3 × 10-2x2+0.492x+11.338
J-e sections of curvilinear equations are：2 × 10-2x2+0.236x+2.985 of y=7 × 10-4x3-
I-k-f sections of curvilinear equations are：Y=-0.01x2+0.2x
I-l-f sections of curvilinear equations are：Y=0.01x2-0.2x
H-g sections of curvilinear equations are：Y=-7 × 10-4x3+2 × 10-2x2-0.236x-2.985.
As shown in Figure 15 and Figure 16, the variable level sensor group C is made of five sensors, and sensor is pipe
The outside of shape, pipe 13 is equipped with pedestal 14；13 internal diameter of the pipe is 9-12mm, wide 5-10mm.
As shown in figs. 12-14, the aft mount D overall length 40-55mm, by six rib pipes, sensor group 12 and water conservancy diversion branch
Fagging group 11 forms, and the center of aft mount D is equipped with through-hole 9, diameter 6-9mm；Left end tube wall is equipped with and is made of six blind holes
Blind hole group 10, a length of 5-7mm of blind hole are affixed with the stabilizer blade group 6 of center support B；11 long 25-32mm of water conservancy diversion gripper shoe groups, width 1-
3mm, high 23-28mm possess six that six water conservancy diversion support plates that a diameter of 1-3mm of chamfering is included are distributed in six rib pipe left parts
Corner angle, angle α are 60 °, and three sensors of sensor group 12 are distributed on three faceted pebbles of six rib pipe right parts, the sensor center of circle
High 10-15mm, diameter 8-10mm, wall thickness 1-2mm.
As shown in Figure 17 and Figure 18, the tail portion ring plate E width is 2-3mm, and the annular that contained internal rail 16 is 300 ° is logical
Hole, internal rail center line are 1-3mm apart from tail portion ring plate E axial line distances.
As shown in figure 21 and figure, the pin I 17 of the fulcrum post H and pin II 18 a diameter of 1-1.5mm, a length of 2-
4mm；Pin I 17 is parallel with II 18 axis of pin, and distance is 1-3mm.Fulcrum post total length is 4-8mm.
Claims (7)
1. a kind of gas detector with bionical cavity and variable level sensor, it is characterised in that：By shell (A), center branch
Seat (B), variable level sensor group (C), aft mount (D), tail portion ring plate (E), motor (F), threaded rod (G) and fulcrum post (H)
Composition, wherein five variable level sensors of variable level sensor group (C) are assemblied in the five of the slide rail group (5) of center support (B)
In a sliding rail, and the pedestal (14) of five sensors and the sliding rail of slide rail group (5) are slidably connected；In one period, five biographies
It is engaged with threaded rod (G) pedestal (14) bottom in sensor only there are one sensor；Water conservancy diversion gripper shoe groups in aft mount (D)
(11) top of six water conservancy diversion support plates and the groove (1) of shell (A) upper three sections (III) are affixed；Stabilizer blade in center support (B)
Six stabilizer blades of group (6) and the blind hole I (10) in aft mount (D) are affixed；Center support (B) upper backup pad group (4) outer end with
The inner wall of leading portion (I) and two sections (II) nearly left part is tangent in shell (A), and can be dismounted if necessary；Threaded rod (G) passes through
The enclosed center of five sliding rails of slide rail group (5), the left end of threaded rod (G) in the through-hole (9) of aft mount (D), center support (B)
Blind hole II (15) is flexibly connected with the pin II (18) of fulcrum post (H), pin I (17) and the center support (B) of fulcrum post (H)
Blind hole III (m) is affixed；The longitudinal axis of threaded rod (G) is parallel with the longitudinal axis of shell (A), misaligned；The output shaft of motor (H) with
Threaded rod (G) right end is affixed；The tail portion ring plate (E) is affixed using glued mode and aft mount (D), the internal rail of tail portion ring plate
(16) it is flexibly connected with the annular groove (n) of threaded rod (G) right part；The shell (A), center support (B), variable level sensor group
(C), pin I (17) axis of aft mount (D), tail portion ring plate (E) and fulcrum post (H) overlaps, threaded rod (G) and fulcrum post
(H) pin II (18) axis overlaps, and two axial lines are mutually parallel, and distance is 1-3mm.
2. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Shell (A) be linked in sequence by leading portion (I), two sections (II), three sections (III) and four sections (IV), the overall length L1 of shell (A) is
The thickness h 2 of 100-150mm, shell (A) are 6-12mm；Wherein two sections (II), three sections (III) and four sections (IV) are pipe；
The length L4 of two sections (II) is 40-75mm, and diameter d3 is 46-56mm；The length L3 of three sections (III) is 40-55mm, and diameter d2 is
60-68mm, three sections of (III) inner walls are equipped with six grooves of the groove group (1) being uniformly distributed along the circumference, and recess width h2 is 3-5mm；Four
The length L2 of section (IV) is 40-55mm, and diameter d1 is 60-80mm；The diameter d4 of the left end of leading portion (I) is 4-8mm, leading portion (3)
Circumference rotated a circle gained along the longitudinal axis of shell (A) by a-b curves, the mathematic(al) representation of a-b curves is：When taking b
Point is origin, is to the right positive direction of the x-axis to cross b points and the straight line parallel with shell A longitudinal axis as x-axis, crosses b points and perpendicular to x
Axis is y-axis, and when establishing coordinate system upwards for positive direction of the y-axis, expression formula is：
7.3 × 10-2x2+6.3 of y=1.7 × 10-3x3-× 10-2x-0.207.
3. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Center support (B) be made of stabilizer blade group (6), slide rail group (5) and water conservancy diversion board group (3), wherein water conservancy diversion board group (3), slide rail group
(5), standalone sensor (8) and stabilizer blade group (6) are ranked sequentially from left to right, five affixed stabilizer blades of sliding rail right end of slide rail group (5)
Six stabilizer blades of group (6), the six sliding rail left ends and the right end of water conservancy diversion board group (3) of slide rail group (5) are affixed, water conservancy diversion board group (3)
Three support plates of uniformly distributed gripper shoe groups (4) on excircle, the left end center of water conservancy diversion board group (3) are equipped with sensor placed hole (2)；
The standalone sensor (8) is fixed in the wide guide rail upper surface center line of slide rail group (5), standalone sensor (8) left end and water conservancy diversion
The distance L7 of board group (3) right end is 5-9mm, the pipe (13) of standalone sensor (8) pipe size and variable level sensor group (C)
Size is identical, internal diameter 9-12mm, wide 5-10mm；Sensor placed hole (2) central axes are overlapped with gas detector central axes, and
Diameter d2For 8-12mm, 0.75 times of a length of diameter；The left end center outer rim of water conservancy diversion board group (3) is equipped with leading with fusiformis section
Flow ring (7)；Water conservancy diversion board group (3) long L1For 15-30mm, outer layer revolving structure radius r2For 14-22mm, middle level revolving structure half
Diameter r1For 12-18mm, and contain center thickness L6For the fusiformis section guide ring (7) of 2-4mm, wherein：
It is to the left positive direction of the x-axis using the places f-i straight line as x-axis when taking f points to be origin, crosses f points and be y-axis perpendicular to x-axis, to
When above establishing coordinate system for positive direction of the y-axis：
C-d sections of curvilinear equations are：Y=-3.3 × 10-2x2+0.492x+11.338
J-e sections of curvilinear equations are：2 × 10-2x2+0.236x+2.985 of y=7 × 10-4x3-
I-k-f sections of curvilinear equations are：Y=-0.01x2+0.2x
I-l-f sections of curvilinear equations are：Y=0.01x2-0.2x
H-g sections of curvilinear equations are：Y=-7 × 10-4x3+2 × 10-2x2-0.236x-2.985.
4. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Variable level sensor group (C) be made of five sensors, sensor is tubular, and the outside of pipe (13) is equipped with pedestal
(14)；Pipe (13) internal diameter is 9-12mm, wide 5-10mm.
5. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Aft mount (D) overall length 40-55mm, be made of six rib pipes, sensor group (12) and water conservancy diversion gripper shoe groups (11), aft mount
(D) center is equipped with through-hole (9), diameter 6-9mm；Left end tube wall is equipped with the blind hole group (10) being made of six blind holes, and blind hole is long
It is affixed with the stabilizer blade group (6) of center support (B) for 5-7mm；The long 25-32mm of water conservancy diversion gripper shoe groups (11), width 1-3mm, high 23-
28mm possesses six corner angle that six water conservancy diversion support plates that a diameter of 1-3mm of chamfering is included are distributed in six rib pipe left parts, angle
α is 60 °, and three sensors of sensor group (12) are distributed on three faceted pebbles of six rib pipe right parts, the high 10- in the sensor center of circle
15mm, diameter 8-10mm, wall thickness 1-2mm.
6. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Tail portion ring plate (E) width be 2-3mm, contained internal rail (16) is 300 ° of annular through-hole, and internal rail center line is apart from tail portion ring plate
(E) axial line distance is 1-3mm.
7. the gas detector as described in claim 1 with bionical cavity and variable level sensor, it is characterised in that：It is described
Fulcrum post (H) pin I (17) and pin II (18) a diameter of 1-1.5mm, a length of 2-4mm；Pin I (17) and pin II
(18) axis is parallel, and distance is 1-3mm；Fulcrum post total length is 4-8mm.
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