CN107883983A - Protector for sensor and sensor - Google Patents
Protector for sensor and sensor Download PDFInfo
- Publication number
- CN107883983A CN107883983A CN201711329534.9A CN201711329534A CN107883983A CN 107883983 A CN107883983 A CN 107883983A CN 201711329534 A CN201711329534 A CN 201711329534A CN 107883983 A CN107883983 A CN 107883983A
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- Prior art keywords
- sensor
- protective
- protector
- porous material
- sensor probe
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- 230000001012 protector Effects 0.000 title claims abstract description 49
- 230000001681 protective effect Effects 0.000 claims abstract description 91
- 239000011148 porous material Substances 0.000 claims abstract description 78
- 239000000523 sample Substances 0.000 claims abstract description 59
- 239000006260 foam Substances 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 description 19
- 239000003245 coal Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 10
- 229910010293 ceramic material Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 6
- 239000002360 explosive Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910000639 Spring steel Inorganic materials 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a kind of protector for sensor and sensor, it is related to technical field of mine safety；The protector for sensor; including porous material protective and fixing device; the upper end of the fixing device is connected to the upper end of sensor probe; and the fixing device is sheathed on outside sensor probe; the porous material protective is sheathed on the outside of sensor probe by the fixing device, and sensor probe is coated by the porous material protective and the fixing device in the longitudinal direction.The sensor includes sensor probe and protector for sensor as described above, and the porous material protective is sheathed on the outside of the sensor probe.The protector for sensor and the sensor, which can effectively evade dust, humidity, thermal-flame, high-pressure shocking wave, to be influenceed to sensor accuracy of measurement and prevents destruction of the factors above to sensor.
Description
Technical field
The present invention relates to technical field of mine safety, more particularly to a kind of protector for sensor and sensor.
Background technology
Recent year mine safety accidents happen occasionally, and particularly fire damp dust explosion accident, monitoring are
Realize that mine safety production is prevented accident and one of major measure to mine disaster early warning, sensor is Monitoring for Coal Mine
The most important input signal of system, the reasonable setting of sensor are to give full play to coal mine safety monitoring system effect, avoid or subtract
Lack accident, reduce the key of equipment investment and maintenance.
For example,《Safety regulations in coal mine》The following place in 499th article of regulation underground must be provided with methane transducer：
(1) coal-face and its return airway and Air return corner, high methane and projecting mine coal-face return airway length are more than
During 1000m in the middle part of return airway.(2) coal road, half-coal rock roadway and have in the stone drifting working face and its return of Gas,
When the digging laneway length of high methane and projecting mine is more than 1000m in the middle part of digging laneway.(3) projecting mine coal-face
Air intake lane.(4) when using series ventilation, by the air intake lane of string coal-face；By the booster of string driving face
Before.(5) exploiting field return airway, a wing return airway, main return airway.(6) using being coaling in the prevailing traffic tunnel of stringing electrical locomotive
At point.(7) coal bunker top, the ribbon conveyer ground corridor of closing.(8) in ground gas extraction pump house.(9) underground is faced
When gas pumping pumping plant leeward side panel outside.(10) in the input of gas pumping pump, output pipe.《Code》503rd rules and regulations
It is fixed：Using the mine of anti-explosion diesel power set and the easy spontaneous combustion of exploitation, the mine of spontaneous progress, carbon monoxide should be set to pass
Sensor and temperature sensor.
It can be seen that sensor spreads all over each place of mine and important production link, can be related to a mine be smoothed out
Production, it is the important guarantee of coal miner life security, therefore, is effectively protected for sensor, ensures that sensor exists
Normal operation under the complex environment of colliery is particularly important.
And underground coal mine is a special working environment, there are inflammable and explosive an imflammable gas and corrosive gas, moist,
Water drenching, mine dust is big, electromagnetic interference is serious etc., and the inflammable and explosive imflammable gas in underground explodes, and blast will produce thermal-flame
And high-pressure shocking wave, factors above can influence the measurement accuracy of sensor, or even sensor can be done great damage.Use at present
It is a kind of protection device being set in outside thermal resistance or thermocouple equitemperature sensor in Temperature Transducer in Common Use protection sleeve pipe, covers
Pipe is usually stainless steel, has the characteristics that waterproof, electromagnetism interference, corrosion-resistant, existing sleeve pipe is in underground coal mine
Sensor in environment has certain protective capability, but existing protection sleeve pipe do not account for underground occur it is inflammable and explosive
The situation that imflammable gas explodes, when gas explosion disaster occurs for colliery, sensor is in thermal-flame and high pressure punching
The protective capability hit under the conditions of ripple is weaker.Gas and the Workplace of gas explosion danger, sensor protection dress be present at other
Putting equally has extremely important effect.It would therefore be highly desirable to dust, blast, humidity and temperature can effectively be avoided by providing one kind
The protector for sensor damaged to sensor and the sensor with this protector for sensor.
The content of the invention
It is an object of the invention to provide a kind of protector for sensor and sensor, to solve existing for above-mentioned prior art
Problem, it can effectively evade the influence to sensor accuracy of measurement of dust, humidity, thermal-flame, high-pressure shocking wave and prevent
Only destruction of the factors above to sensor.
To achieve the above object, the invention provides following scheme：
The present invention provides a kind of protector for sensor, including porous material protective and fixing device, the fixed dress
The upper end put is connected to the upper end of sensor probe, and the fixing device is sheathed on outside sensor probe, the porous material
Material protective is sheathed on the outside of sensor probe by the fixing device, and sensor probe is described in the longitudinal direction
Porous material protective coats with the fixing device.
Preferably, the porous material protective is porous foam ceramic protective or porous foam metal protective.
Preferably, the fixing device includes protective keeper and set casing, and the porous material protective is detachable
Ground is connected in the protective keeper, and the upper end of the protective keeper is connected with the lower end of the set casing, described
The upper end of set casing and the upper end of sensor probe are detachably connected.
Preferably, the protective keeper includes multiple elastic buckles pin along the set casing circumferentially-spaced laying, and
One end of each elastic buckles pin is connected with the set casing, and the other end of each elastic buckles pin forms button pin and is buckled in
On the outer face of the porous material protective.
Preferably, the set casing includes first for from top to bottom setting gradually and connecting along sensor probe length direction
Housing and the second housing, first housing and second housing are sheathed on outside sensor probe, and first housing
Inwall matches with the circumferential shape of sensor probe in the circumferential；Second housing is truncated cone-shaped housing, and the second shell
The big end of body is fixedly connected with the upper end of each elastic buckles pin.
Preferably, first housing is provided with multiple screw holes, and one is threaded with each screw hole admittedly
Determine screw, each fixing screws pass through the corresponding screw hole and are pressed on the outer wall of sensor probe.
Preferably, it is equipped with a cushion pad between each fixing screws and the outer wall of sensor probe.
Preferably, when the protective keeper is not clamped with the porous material protective, each elastic buckles pin edge
Length direction self-retaining end to free end, which slopes inwardly, to be set, the length direction of each elastic buckles pin and the axle of sensor probe
It it is 10~30 degree to angle, and each elastic buckles pin can be clamped and snapped connection on the porous material protective.
Preferably, the aperture of the porous material protective is 50-500 μm, and porosity is 80%~95%.
The present invention also provides a kind of sensor, including sensor probe and protector for sensor as described above.
The present invention achieves following technique effect relative to prior art：
Compared with prior art, protector for sensor and sensor provided by the invention, are protected using porous material
Body is protected to sensor probe, and porous material protective is the protective being made of porous materials, and porous material is a kind of
By being mutually communicated or blind bore hole forms the material of network structure, such material high temperature resistant, will not melt under thermal-flame；
There is the structure of more micropore with porous material, to protect the sensor in subsurface environment, can isolate to a certain extent
Coal dust in subsurface environment, separate thermal-flame caused by extinguishing gas explosion, reduce explosion overpressure, can more effectively protect
The sensor that shield is in underground coal mine environment.
The protector for sensor and the sensor are applicable not only to technical field of mine safety, other exist gas and
The dangerous Workplace of gas explosion equally has extremely important effect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the application schematic diagram of protector for sensor provided by the invention；
Fig. 2 is the structural representation of protector for sensor provided by the invention；
Fig. 3 is the front view of the porous material protective in protector for sensor provided by the invention；
Fig. 4 is the top view of the porous material protective in Fig. 3；
Fig. 5 is the structural representation of the fixing device in protector for sensor provided by the invention；
Fig. 6 is the top view of the fixing device in Fig. 5；
Fig. 7 is the front view of the fixing screws in protector for sensor provided by the invention；
Fig. 8 is the left view of the fixing screws in Fig. 7.
In figure：1- porous material protectives；2- fixing devices；21- elastic buckles pin；211- detains pin；22- set casings；221-
First housing；The housings of 222- second；3- fixing screws；4- sensor probes；5- sensors；6- coal dusts；7- depositing dust water smokes；8- is quick-fried
Fried source.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is an object of the invention to provide a kind of protector for sensor and sensor, to solve existing for above-mentioned prior art
Problem, it can effectively evade the dust of underground coal mine, humidity, thermal-flame, high-pressure shocking wave to sensor accuracy of measurement
Influence and prevent destruction of the factors above to sensor.
The present invention provides a kind of protector for sensor, including porous material protective and fixing device, fixing device
Upper end is connected to the upper end of sensor probe, and fixing device is sheathed on outside sensor probe, and porous material protective passes through
Fixing device is sheathed on the outside of sensor probe, and sensor probe is in the longitudinal direction by porous material protective and fixation
Device all coats.
Compared with prior art, protector for sensor provided by the invention, porous material protective are porous material,
Have using existing by being mutually communicated or protective made of blind bore hole forms the material of network structure, and the material
High temperature resistant, it will not melt under thermal-flame；There is the structure of more micropore with porous material, to protect in subsurface environment
Sensor, the coal dust that can isolate to a certain extent in subsurface environment, separate extinguishing gas explosion caused by thermal-flame,
Explosion overpressure is reduced, can more effectively protect the sensor in underground coal mine environment.
The invention device is applicable not only to technical field of mine safety, in the life that other have gas and gas explosion danger
Production place equally has extremely important effect.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Embodiment one
As shown in figure 1, be the application schematic diagram of protector for sensor, wherein, mine sensors 5 are installed in outside away from air channel
Export 10~15m places, environmental impact factor that mine sensors 5 may be subject to has coal dust 6, depositing dust water smoke 7, height caused by blast
Warm fire flame 8, explosion overpressure, strong light etc..Protector for sensor is connected on sensor probe 4, can be in above colliery
Sensor 5 in environment is protected.
The protector for sensor that the present embodiment provides, as shown in Fig. 2 including porous material protective 1 and fixing device
2, the upper end of fixing device 2 is connected to the upper end of sensor probe 4, and fixing device 2 is sheathed on outside sensor probe 4, more
Porous materials protective 1 is sheathed on the outside of sensor probe 4 by fixing device 2, and sensor probe 4 in the longitudinal direction by
Porous material protective 1 all envelopes with fixing device 2.Porous material protective 1 is a kind of protection made of porous material
Body, and porous material protective 1 is sheathed on the outside of sensor probe 4, for the quiet middle protection sensor probe 4 of hazardous environment.
The protector for sensor that the present embodiment provides, there is the structure of more micropore with porous material protective 1,
To protect the sensor 5 in subsurface environment, the coal dust that can isolate to a certain extent in subsurface environment, separate extinguishing gas explosion
Caused thermal-flame, explosion overpressure is reduced, can more effectively protect the sensor 5 in underground coal mine environment.Its
In, the effect of fixing device 2 is connection porous material protective 11 and protected sensor probe 4；Porous material protective 1
For hollow cylindrical, the height of porous material protective 1 and wall thickness are passed according to being determined by the length of protection sensor probe 4
The lower end of sensor probe 4 is coated completely by porous material protective 1, the uniform wall thickness of porous material protective 1.
As shown in figs. 34, the porous material protective 1 that the present embodiment provides uses porous foam ceramic material, internal equal
It is even to be distributed the micropore or hole being mutually communicated, therefore it has porosity height, bulk density is small, specific surface area is big and unique thing
Surface characteristic is managed, in addition the distinctive high temperature resistant of ceramic material, corrosion-resistant, high chemical stability and dimensional stability, porous bubble
Foam ceramics are a kind of quick-fried materials of excellent barrier, and porous material protective 1 made of porous foam ceramic senses to underground coal mine
Device 5 has good protective effect.
The operation principle of protector for sensor provided by the invention is as follows：
When sensor 5 works, porous material protective 1 has direct iris action to coal dust 6 and depositing dust water smoke 7, prevents
Only the directly affecting to sensor probe 4 of depositing dust water smoke 7 of coal dust 6 and liquid, when gas and dust explosion accident occurs for colliery,
During gas explosion flame propagation, when explosive flame passes through porous material protective 1, explosion gas is protected in porous material
Flowed in the hole of body 1 and occur burning and explosive reaction, reaction heat exchanged with the hole wall of porous material protective 1, bag
Include heat transfer, thermal convection current, heat radiation.Because the aperture of porous material protective 1 is smaller, the specific area of porous material protective 1 is very big,
The rebuffed destruction of premixed gas anakmetomeres can become very big, when flame is by porous material 1 micro-channel of protective, due to device
Wall effect, the free radical quantity for causing to participate in burning are drastically reduced, terminating reaction process；With porous foam ceramic hole wall caused by heat
Exchange effect makes hole wall and adjacent structure of the heat of blast through porous material protective 1 and scattered and disappeared, so that flame temperature is fast
Prompt drop occurs below extinguishing to extinguishing temperature, prevents flame transmission；Flame can also prevent fire by resistance as caused by hole
The propagation of flame.Due to complicated pore passage structure in porous material protective 1 be present, passed when blast wave enters in these ducts
Sowing time, the hole muscle that it can run into stop occurs reflection, scattering, causes the energy loss of blast wave, so as to be greatly attenuated blast
The peak stress of ripple.
Porous foam ceramic generally can be divided into two classes, i.e. open-celled ceramic material and closed pore ceramic material by opening-type,
This depends on whether each hole has solid wall surface.If the solid for forming foams is only contained in the rib of hole, it is referred to as
For open-celled ceramic material, its hole is interconnected；If there is solid wall surface, then foams are referred to as closed pore ceramic material,
Hole therein is mutually separated by continuous ceramic matrix.But most of foamed ceramics had not only had perforate hole but also existed to be closed on a small quantity
Hole hole.Usually, the resistance explosion insulation performance of closed cell foamed ceramics better than open celled foam ceramics, closed cell foamed ceramics antiknock ability compared with
Good, each hole of closed pore is surrounded by complete hole wall, and obstructing capacity is too strong may to cause measurement inaccurate；Open celled foam ceramics are then
So that the measurement accuracy of sensor is high, the protector for sensor preferred aperture foam ceramic material that the present embodiment provides.But no
It is limited to this, protector for sensor can select which kind of class used according to measurement accuracy and measurement request and the intensity of blast
The foam ceramic material of type.Foamed ceramics can be divided into three classes according to pore size, and in general the diameter of hole is less than 2nm
Poromerics；Hole between 2~50nm for mesoporous material；Hole is grand Porous materials in more than 50nm.Usually hole
Rate is smaller, and resistance explosion insulation performance is better, it is contemplated that transmission signal needs fidelity, the protector for sensor that the present embodiment provides
It is preferred that grand hole foam ceramic material of the hole between 50-500 μm, and preferable porosity is 80%~95% foamed ceramics material
Material.The material for preparing foamed ceramics at present mainly has ZrO2、Si3N4、Al2O3, SiC etc., most commonly SiC foam ceramics and
Al2O3Foamed ceramics, because the softening temperature of SiC foam ceramics, compressive resistance are better than Al2O3, therefore the biography that the present embodiment provides
Sensor protection device selection SiC foam ceramics.
As shown in Fig. 5~6, fixing device 2 includes protective keeper and set casing 22, and porous material protective 1 is removable
Unload and be connected in protective keeper, and lower end of the upper end of protective keeper also with set casing 22 is connected, set casing 22
Upper end and the upper end of sensor probe 4 are detachably connected.
Protective keeper includes multiple elastic buckles pin 21 along the circumferentially-spaced laying of set casing 22, and each elastic buckles pin 21
One end be connected with set casing 22, the other end of each elastic buckles pin 21 forms button pin 211 and is simultaneously buckled in porous material protective 1
Outer face on.
Set casing 22 includes the first housing 221 for from top to bottom setting gradually and connecting along the length direction of sensor probe 4
With the second housing 222, the first housing 221 and the second housing 222 are sheathed on outside sensor probe 4, and the inwall of the first housing 221
The circumferential shape with sensor probe 4 matches in the circumferential.
Second housing 222 is truncated cone-shaped housing, and the big end of the second housing 22 and the upper end of each elastic buckles pin 21 are fixed and connected
Connect.
In specific scheme, each elastic buckles pin 21 side that passes through welding for the protector for sensor that the present embodiment provides
Formula is connected with set casing 22, and elastic buckles pin 21 has four, is uniformly distributed on 22 big mouthfuls of circumference of set casing；Elastic buckles pin 21 with
The pad of set casing 22 is on the outer surface of 22 big mouthfuls of circumference of set casing, and welding trace does not interfere with porous material caused by solder joint
Protective 1 is bonded with set casing 22, and the protection level of coverage of protector for sensor is higher.
Second housing 222 is truncated cone-shaped housing, but not limited to this, or bell shape, as long as sensor protection fills
When putting in a state of use, the outer surface outward-dipping setting from top to bottom of the second housing 222, this structure setting is unfavorable
In the accumulation of dust fall.
First housing 221 is provided with multiple screw holes, and a fixing screws 3 are threaded with each screw hole, each solid
Determine screw 3 to pass through corresponding screw hole and be pressed on the outer wall of sensor probe 4.
During the protector for sensor provided using the present embodiment, porous material protective 1 is fixed with elastic buckles pin 21,
Overall again that protector for sensor is enclosed on sensor probe 4, tightening fixing screws 3 can be by the sensor in the present embodiment
Protection device is used to protect mine sensors.
A cushion pad is equipped between each fixing screws 3 and the outer wall of sensor probe 4；Cushion pad is cushion rubber bumper, but
Not limited to this, as long as can prevent fixing screws 3 from, to damage caused by sensor 5 itself, fixing screws 3 can be increased again with passing
Friction between sensor probe 4, it can fix protector for sensor more firm.
The osculum of set casing 22 four fixing screws 3 provided circumferentially about, fixing screws 3 are distributed in even circumferential, each fixed
It is separated by angle between screw 3 for 45 °；Fixing device 2 is fixed using fixing screws 3, simple in construction as shown in Fig. 7~8, dismounting
It is simple to operate, can be applied to it is various have probe temperature sensors, it is widely applicable, fixing device 2 can Reusability, cost
It is cheap.
When protective keeper is not clamped with porous material protective 1, each elastic buckles pin 21 own elasticity button along its length
The fixing end of pin 21 slopes inwardly to free end to be set, the length direction of each elastic buckles pin 21 and the axial direction folder of sensor probe 4
Angle is 10~30 degree, and each elastic buckles pin 21 can be clamped and snapped connection on porous material protective 1 so that each elasticity
Button pin 21 can fix porous material protective 1 more firm, be easily installed porous material protective 1.
As shown in figure 4, set casing 22 selects potassium steel, potassium steel can resist higher shock loading；Elastic buckles pin 21
From spring steel, spring steel requires high temperature resistant, has high tensile strength, elastic limit, high fatigue strength, therefore select
55Si2Mn alloy spring steels, spring steel is flexible, facilitates operating personnel's folding to fix porous material protective 1, spring steel
Elasticity, porous material protective 1 is also caused to fix more firm.
In addition, protector for sensor provided by the invention, is not limited solely to protect the sensor of underground coal mine
Shield, to can equally play certain protective effect in dust atmosphere and with the sensor in explosion hazard environment.
Embodiment two
The present embodiment is the protector for sensor that is, the present embodiment provides to one further improved embodiment of embodiment
The entire infrastructure feature of the protector for sensor of embodiment one is included, is theed improvement is that：
The porous material protective 1 for the protector for sensor that the present embodiment provides uses porous foam metal material system
Into being porous foam metal protective, the micropore or hole that the distribution of porous foam metal inner homogeneous is mutually communicated, equally have
Porosity is high, bulk density is small, specific surface area is big and unique physical surface properties, high temperature resistant, corrosion-resistant, high chemically stable
Property and dimensional stability, porous foam metal are a kind of quick-fried materials of excellent barrier, porous material made of porous foam metal
Protective 1 has good protective effect to underground coal mine sensor 5.
Embodiment three
The present embodiment includes the full content of embodiment one or embodiment two, i.e., the sensor that the present embodiment provides includes real
Apply example one or the entire infrastructure feature of the protector for sensor in embodiment two.
The sensor that the present embodiment provides, including the sensor protection in sensor probe and embodiment one or embodiment two
Device, porous material protective 1 are sheathed on the outside of sensor probe 4.
Specific case is applied in the present invention to be set forth the principle and embodiment of the present invention, above example
Illustrate to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, in specific embodiments and applications there will be changes.In summary, this specification content
It should not be construed as limiting the invention.
Claims (10)
- A kind of 1. protector for sensor, it is characterised in that：Including porous material protective and fixing device, the fixing device Upper end be connected to the upper end of sensor probe, and the fixing device is sheathed on outside sensor probe, the porous material Protective is sheathed on the outside of sensor probe by the fixing device, and sensor probe is in the longitudinal direction by described more Porous materials protective coats with the fixing device.
- 2. protector for sensor according to claim 1, it is characterised in that：The porous material protective is porous bubble Foam ceramics protective or porous foam metal protective.
- 3. protector for sensor according to claim 1, it is characterised in that：The fixing device is kept including protective Part and set casing, the porous material protective are removably attachable in the protective keeper, and the protective is kept The upper end of part is connected with the lower end of the set casing, and the upper end of the set casing and the upper end of sensor probe are detachably connected.
- 4. protector for sensor according to claim 3, it is characterised in that：The protective keeper is included along described Multiple elastic buckles pin of set casing circumferentially-spaced laying, and one end of each elastic buckles pin is connected with the set casing, respectively The other end of the elastic buckles pin forms button pin and is buckled on the outer face of the porous material protective.
- 5. protector for sensor according to claim 4, it is characterised in that：The set casing is included along sensor probe The first housing and the second housing that length direction from top to bottom sets gradually and connected, first housing and second housing It is sheathed on outside sensor probe, and first inner walls match with the circumferential shape of sensor probe in the circumferential；Institute It is truncated cone-shaped housing to state the second housing, and the big end of second housing is fixedly connected with the upper end of each elastic buckles pin.
- 6. protector for sensor according to claim 5, it is characterised in that：First housing is provided with multiple screws Hole, a fixing screws are threaded with each screw hole, and each fixing screws pass through the corresponding screw hole And it is pressed on the outer wall of sensor probe.
- 7. protector for sensor according to claim 6, it is characterised in that：Each fixing screws and sensor probe Outer wall between be equipped with a cushion pad.
- 8. protector for sensor according to claim 4, it is characterised in that：The protective keeper does not clamp When stating porous material protective, self-retaining end to the free end inward slant along its length of each elastic buckles pin is set, each institute The axial angle of the length direction and sensor probe of stating elastic buckles pin is 10~30 degree, and each elastic buckles pin can press from both sides Hold and snap connection on the porous material protective.
- 9. protector for sensor according to claim 1, it is characterised in that：The aperture of the porous material protective is 50-500 μm, porosity is 80%~95%.
- A kind of 10. sensor, it is characterised in that：Including sensor probe and such as sensing according to any one of claims 1 to 9 Device protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329534.9A CN107883983B (en) | 2017-12-13 | 2017-12-13 | Protector for sensor and sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329534.9A CN107883983B (en) | 2017-12-13 | 2017-12-13 | Protector for sensor and sensor |
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| Publication Number | Publication Date |
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| CN107883983A true CN107883983A (en) | 2018-04-06 |
| CN107883983B CN107883983B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711329534.9A Active CN107883983B (en) | 2017-12-13 | 2017-12-13 | Protector for sensor and sensor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107883983B (en) | 2019-08-20 |
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