CN102589795B - Wind pressure sensor - Google Patents
Wind pressure sensor Download PDFInfo
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- CN102589795B CN102589795B CN201210036644.7A CN201210036644A CN102589795B CN 102589795 B CN102589795 B CN 102589795B CN 201210036644 A CN201210036644 A CN 201210036644A CN 102589795 B CN102589795 B CN 102589795B
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Abstract
The invention discloses a wind pressure sensor which is characterized in that the sensor comprises a body seat, wherein the body seat is internally divided into a first chamber and a second chamber in mutual communication; electrolyte is contained in the first chamber and the second chamber; the height of the top of the second chamber is greater than that of the top of the first chamber; an air inlet and an air outlet are arranged on the body seat; the air inlet is communicated with the first chamber; a pressure conduction device is arranged in the air inlet; the air outlet is communicated with the second chamber; an exhaust device is arranged in the air outlet; and a potential detection component is also arranged in the second chamber. The sensor disclosed by the invention has simple structure, low production cost and high practicability, and is convenient to mount and suitable for batch production of industrial product; the sensor can detect tiny pressure change, and the detection sensitivity is high; the detected pressure can be directly applied to the electrolyte, and the accumulative error caused by part production or assembly is reduced; and moreover, the sensor suffers little influence of external interference, can effectively avoid the pollution of oil smoke, and has long service life.
Description
Technical field
The present invention relates to a kind of sensor, particularly a kind of wind pressure sensor that is applicable to the detection of lampblack absorber blast.
Background technology
Lampblack absorber in use, in the time that the blast of indoor oil smoke amount increase or common flue increases, just need to adjust motor speed and improve smoke discharging effect with increasing exhaust amount, traditional range hood rotating speed is conventionally by manual shift, often need user repeatedly to regulate intervention, waste time and energy.
In order to accomplish that intelligent and hommization regulates, on many lampblack absorber products, be provided with oil smoke detecting sensor (as detected the sensor of oil temperature, the sensor of detection oil smoke pressure), realize the automatic adjusting to motor speed by the feedback signal of sensor.Wherein, wind pressure sensor is a kind of sensor the most conventional in industrial practice, can be used to detect the oil smoke pressure of lampblack absorber, its principle of work is: pressure acts directly on the diaphragm of sensor, make diaphragm produce the micrometric displacement being directly proportional to pressure medium, the resistance of sensor is changed, with this variation of electronics wireline inspection, and a standard signal corresponding to this pressure of conversion output.The Chinese utility model " wind pressure sensor used for gas furnace " that is ZL200920059918.8 as the patent No. discloses a kind of wind pressure sensor, it comprises metal dish, plastic disk, barrier film, diaphragm plate, sealing cap, metal dish and plastic disk are fixed together and form an air chamber, barrier film, diaphragm plate is arranged on respectively in air chamber, technical characteristics is that it also comprises LOAD CELLS, described LOAD CELLS comprises elastic beam, resistance strain gage, testing circuit, resistance strain gage, testing circuit sticks on elastic beam, elastic beam is provided with stiff end and pressure measurement end, salient point on barrier film is by the pressure measurement end in contact in sealing cap and elastic beam, and elastic beam is fixed on the outside of metal dish, testing circuit is provided with power input line and output line, power input line and output line electrically connect with the controller of gas heater respectively.
But the wind pressure sensor parts of above-mentioned patent are more, complex structure, and not only manufacturing process is loaded down with trivial details, and assembly difficulty is large; In addition, the sensor of this patent is generally used on gas heater, for lampblack absorber product, because there are a large amount of oil smoke to produce in lampblack absorber use procedure, and in sensor in this patent because parts are many, matching relationship complexity, easily being subject to fume pollution stops up, and then cause parts measuring accuracy to reduce, therefore, the sensor in above-mentioned patent has certain restriction to environment for use, inapplicablely under soot pollution environment, uses, once and elastic sensing element surface is damaged or inefficacy, sensor just cannot normally use.
Summary of the invention
Technical matters to be solved by this invention is that a kind of simple in structure, pressure transducer of detecting sensitive and low cost of manufacture is provided for above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of wind pressure sensor, it is characterized in that: described sensor includes noumenal seat, in described noumenal seat, cut apart and form the first chamber and the second chamber that are interconnected, in described the first chamber and the second chamber, be equipped with electrolytic solution, the overhead height of described the second chamber is greater than the overhead height of described the first chamber; Wherein, offer air intake opening and exhausr port on described noumenal seat, described air intake opening and described the first chamber are connected, and are provided with the pressure conduction device that can be connected with lampblack absorber air outlet in this air intake opening; Described exhausr port and described the second chamber are connected, and in this exhausr port, are provided with exhaust apparatus, and, in described the second chamber, be also provided with the potentiometric detection parts that can detect electrolytic solution height in this chamber.
Under normal circumstances, wind pressure value when user normally uses lampblack absorber is 200Pa left and right, liquid level difference height under this wind pressure value is probably 30mm left and right, for prevent blast increase time liquid overflow from noumenal seat, as preferably, the second described chamber and the height difference of the first chamber are to be greater than 30mm as good.
For easy for installation, and can effectively tested air pressure be guided in noumenal seat inner chamber, as preferably, described pressure conduction device is one to plug and the cylindrical rod piece of axial limiting in described air intake opening, and described cylindrical rod piece offers the inlet channel connecting vertically.So tested air pressure can enter in the first chamber by the inlet channel of cylindrical rod piece, this cylindrical rod piece can directly be inserted in air intake opening, and assembling and dismounting are all very simple.
In order to make liquid level in noumenal seat can more obviously sense the effect that blast changes, as preferably, the inlet channel of described cylindrical rod piece is formed with air pressure exhaust opening in bottom, and the pore size of described air pressure exhaust opening is 1～10mm.In order to prevent that oil smoke from blocking the inlet channel of cylindrical rod piece, the aperture of air pressure exhaust opening is difficult for too small (being less than 1mm), but, the aperture of air pressure exhaust opening also should not excessive (being greater than 10mm), in the time that aperture is excessive, the effect of tested gas pressure on liquid level will weaken, and reduces the detection sensitivity of sensor.
In order to realize the axial limiting of cylindrical rod piece, as further preferred, the inlet channel of described cylindrical rod piece is formed with air pressure access hole on top, this air pressure access hole is connected with described exhausr port by the draft tube that tested air pressure can be introduced, the lateral wall of described cylindrical rod piece is along circumferentially forming the cambered outwards limited location snap ring in footpath, and the air intake opening upper surface of described limited location snap ring and described noumenal seat offsets and realizes the axial limiting of described cylindrical rod piece at this air intake opening.So cylindrical rod piece can be connected to exhausr port by draft tube, make sensor itself can be arranged on optional position, as being arranged on exhausr port, also can be arranged in lampblack absorber casing, install more flexible.
In order the variation of tested air pressure to be detected more accurately, when actual use, as preferably, the spacing distance between the bottom of described cylindrical rod piece and the inner bottom surface of described the first chamber is 5～30mm.In the time that spacing distance is less than 5mm, the now bottom of too close the first chamber in the bottom of cylindrical rod piece, the reacting force that air pressure is applied to while discharge on the first chamber bottom surface increases, and is unfavorable for the smooth discharge of air pressure; In the time that spacing distance is greater than 30mm, now the bottom of cylindrical rod piece likely departs from liquid level, and air pressure is remake and used on liquid level by air out from the air pressure exhaust opening of cylindrical rod piece, and pressurized effect weakens, and can have influence on the detection sensitivity of sensor.
As preferably, described the second chamber can be following structure: this second chamber includes the left half cavity and right half chamber that are interconnected, and the overhead height in described right half chamber is greater than the overhead height of described left half cavity; Wherein, described exhausr port is opened in half top, chamber, the right side of described the second chamber, and this exhausr port is the Vertical Channel of a both ends open connection, and the bottom end opening of described exhausr port is formed with step surface; Between the left half cavity of described the second chamber and described exhausr port, be also communicated with by the air hole of laterally offering, described air hole is opened in the position near described left half cavity top.
In order to ensure the balance of inner and outer air pressure, and prevent that liquid from overflowing from exhausr port, as preferably, described exhaust apparatus includes the top cover, push rod, spring and the base that are placed in described exhausr port, wherein, the bottom of described base and described step surface offset, and described base offers the pore running through vertically; One end of described spring is arranged on described base, and the other end of this spring and the bottom of described push rod offset; Described top cover is fixedly installed in the top end opening of described exhausr port, and this top cover offers a through hole vertically, and described push rod, under the vertical state of forward, can form the gap that supplied gas is discharged all the time between the top of described push rod and the bottom of described top cover; Described push rod is under inversion or heeling condition, and described spring has the trend that drives described push rod that its top is offseted with the bottom of described top cover all the time and to seal described through hole.
Preferred as another, described the second chamber also may simply be an elongated passageway of vertically offering, and described exhausr port is the blind hole of a top end opening; Between described the second chamber and described exhausr port, be communicated with by the air hole of laterally offering, described air hole is opened in the position near described the second chamber roof.The volume of this second chamber is little, not only saved electrolytic solution, and the structure of elongated passageway contribute to improve induction sensitivity, when ambient pressure have trace change time, in the elongated passageway of the second chamber, will produce certain liquid level difference and change, make the reaction of sensor sensitiveer; And be not communicated with the second chamber bottom exhausr port, can avoid getting rusty after spring members Long contact time electrolytic solution, the serviceable life of elongated component.
Correspondingly, described exhaust apparatus includes the top cover, push rod and the spring that are placed in described exhausr port, and wherein, one end of described spring and the bottom of described exhausr port offset, and the other end of this spring and the bottom of described push rod offset; Described top cover is fixedly installed in the top end opening of described exhausr port, and this top cover offers a through hole vertically, and described push rod, under the vertical state of forward, can form the gap that supplied gas is discharged all the time between the top of described push rod and the bottom of described top cover; Described push rod is under inversion or heeling condition, and described spring has the trend that drives described push rod that its top is offseted with the bottom of described top cover all the time and to seal described through hole.This exhaust apparatus has saved base, and structure is more simple, and assembling is more prone to.
In order to be convenient for measuring liquid level, as preferably, described potential detection device includes multiple be parallel to each other and along the spaced electric conductor of vertical height direction of described the second chamber.So, the quantity of electric conductor and spacing distance can be arranged according to practical measurement requirement, the liquid level at each electric conductor place has represented an atmospheric pressure value, in the time that liquid level arrives corresponding electric conductor height, just can record the now force value of tested air pressure by corresponding control circuit.
For the ease of installing and changing, as further preferred, the sidewall of the second described cavity vertically offers spaced mounting hole, described electric conductor is conduction copper column, described conduction copper column plugs and is fixed in corresponding described mounting hole, and one end of conduction copper column is arranged in described the second chamber described in each, described in each, the other end of conduction copper column exposes to the output terminal as described electric conductor outside described noumenal seat.Conduction copper column has good electric conductivity, can improve degree of accuracy and the sensitivity of detection.
For the installation that realizes sensor is fixed, as preferably, on described noumenal seat, be also provided with the stationary installation for described installation of sensors location.
Stationary installation can adopt various structures to realize, as preferably, described stationary installation may simply be a stamping forming plate, this plate is fixedly connected on described noumenal seat by screw, described stationary installation includes two flanks that can be respectively recline mutually with installed surface, described in each, on flank, offers connecting hole.This fixture structure is simple, and volume is little, mounts and dismounts all very convenient.
In order to facilitate the interpolation of electrolytic solution, as preferably, described noumenal seat also offers inlet, on described inlet, is connected with detachable end.
Compared with prior art, the invention has the advantages that: the noumenal seat of sensor is injected with electrolytic solution, in the time that there is air pressure change in the external world, in noumenal seat, between the cavity volume of two connections, can produce certain liquid level difference, by the conversion of control circuit, can calculate corresponding wind pressure value according to this liquid level difference, thereby the oil smoke pressure of measuring indoor or common flue changes, simple in structure, the manufacture and easy for installation of this sensor, production cost is low, practicality is large, is applicable to industrial products batch production; Secondly, pressure sensitive is carried out in the variation by liquid height in testing process, can detect that trickle pressure changes, and detection sensitivity is high; And, can be acted directly on this electrolytic solution by measuring pressure, not by middle other components and parts, reduce, because of the cumulative errors that parts are produced or assembling causes, to have improved accuracy in detection; In addition, electrolytic solution is enclosed in noumenal seat, and electrolytic solution is subject to the impact of external interference little, can effectively avoid fume pollution, longer service life.
Brief description of the drawings
Fig. 1 is one of three-dimensional sensor structural representation of the embodiment of the present invention one.
Fig. 2 be the embodiment of the present invention one three-dimensional sensor structural representation two.
Fig. 3 is the three-dimensional sensor exploded view of the embodiment of the present invention one.
Fig. 4 is the sensor cut-open view of the embodiment of the present invention one.
Fig. 5 is the cap structure schematic diagram of the exhaust apparatus of the embodiment of the present invention one.
Fig. 6 is the cut-open view of top cover shown in Fig. 5.
Fig. 7 is the noumenal seat cut-open view of the embodiment of the present invention one.
Fig. 8 is the pressure conduction device cut-open view of the embodiment of the present invention one.
Fig. 9 is the three-dimensional sensor structural representation of the embodiment of the present invention two.
Figure 10 is the sensor cut-open view of the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Embodiment mono-, referring to Fig. 1～Fig. 8:
The sensor of the present embodiment can detect the variation of external pressure, be specially adapted to the blast of the indoor or common flue that detects lampblack absorber, and, after the signal that sensor detects is changed by corresponding control circuit, can obtain corresponding atmospheric pressure value, and then adjust soot motor rotating speed according to the stable output of the air quantity of demarcating, and reach smooth and easy smoke evacuation, effectively improve the environment for use of lampblack absorber.
As shown in Fig. 1～8, the sensor of the present embodiment includes a noumenal seat 1, on noumenal seat 1, offer air intake opening 11, exhausr port 12 and inlet 13, on inlet 13, be connected with detachable end 2, by the inlet 13 interior filling liquid of noumenal seat 1 in the past, and adjust the capacity of liquid in noumenal seat 1; The inside of noumenal seat 1 is cut apart and is formed the first chamber A and the second chamber B that are interconnected, and the overhead height of the second chamber B is greater than the overhead height of the first chamber A; On the lateral wall of noumenal seat 1, be also provided with the stationary installation for this installation of sensors, stationary installation can be various mounting means of the prior art, simply, can adopt a stamping forming plate 9, the body part of this plate 9 is fixedly connected on noumenal seat 1 by screw 92, plate 9 has two symmetrically arranged flanks 91, on each flank 91, offers connecting hole 911;
Wherein, in the first chamber A and the second chamber B, be filled with electrolytic solution, the capacity of electrolytic solution is too much unsuitable, too much easily from noumenal seat 1, overflow, the capacity of electrolytic solution is also difficult for very few, cross under the state that boundary's air pressure is larger outside at least and cannot reach predetermined liquid level difference, as preferably, the capacity that in the present embodiment, electrolytic solution accounts for the first chamber A is about 90%; Air intake opening 11 and the first chamber A are connected, and are provided with the pressure conduction device that can be connected with the air outlet of lampblack absorber in this air intake opening 11, and pressure conduction device is for being incorporated into tested air pressure in noumenal seat 1;
The second chamber B of the present embodiment includes the left half cavity and right half chamber that are interconnected, and the overhead height in right half chamber is greater than the overhead height of left half cavity; Wherein, exhausr port 12 is opened in half top, chamber, the right side of the second chamber B, and exhausr port 12 is the Vertical Channel of a both ends open connection, and half chamber, the right side of the bottom end opening of exhausr port 12 and the second chamber is connected; Between the left half cavity of the second chamber B and exhausr port 12, be communicated with by the air hole 15 of laterally offering again, for the gas at left half cavity top fully being discharged, the height of air hole 15 should be offered near the position at left half cavity top, at least will be higher than the height of the fundamental measurement stroke of sensor;
In exhausr port 12, be also provided with exhaust apparatus, exhaust apparatus can be in the second chamber B pressure gas is discharged outside the second chamber B while increasing, thereby keep air pressure and ambient atmosphere pressure balanced in the second chamber B, can also prevent that sensor is under inclination or inversion state, electrolytic solution overflows from noumenal seat simultaneously; In the second chamber B, be also provided with the potentiometric detection parts that can detect electrolytic solution height in this chamber, the induction output terminal of potentiometric detection parts and the input end of speed-regulating control circuit are connected;
Under normal circumstances, the wind pressure value that user produces while normally using lampblack absorber is 200Pa left and right, under this wind pressure value, probably can produce the liquid level difference height of 30mm left and right, for prevent blast increase time liquid from noumenal seat 1, overflow, should guarantee to there is larger difference in height between the second chamber B top and the first chamber A top, to be greater than 30mm as good, as preferably, the second chamber B top of the present embodiment and the difference in height at the first chamber A top are chosen as 50mm.
Pressure conduction device in the present embodiment is a cylindrical rod piece 3 being inserted in air intake opening 11, in order to allow air pressure be passed in the first chamber A, cylindrical rod piece 3 offers the inlet channel 31 connecting vertically, the inlet channel 31 of cylindrical rod piece 3 is formed with air pressure exhaust opening 32 in bottom, the aperture of air pressure exhaust opening 32 is difficult for too small, too small aperture easily causes that the inlet channel 31 of cylindrical rod piece 3 stops up, the aperture of air pressure exhaust opening 32 is also difficult for excessive, excessive aperture cannot significant reaction external pressure variation, easily reduce the sensitivity that air pressure detects, preferably, the pore size of air pressure exhaust opening 32 is advisable with 1～10mm, in addition, cylindrical rod piece 3 inserts the degree of depth in the first chamber A also can affect precision and the sensitivity of detection, the bottom of cylindrical rod piece 3 can not offset with the inner bottom surface of the first chamber A, can not depart from liquid level, in order to reach good detection effect, react exactly the variation of external pressure, the spacing distance between the bottom of cylindrical rod piece 3 and the inner bottom surface of the first chamber A is preferably 5～30mm,
In order to facilitate the installation of sensor, the top of cylindrical rod piece 3 is also formed with air pressure access hole 33, can access and on hole 33, be connected with a draft tube that tested air pressure can be imported at air pressure, tested air pressure can transfer in the first chamber A by draft tube, and the installation site of sensor itself just can arrange arbitrarily according to actual conditions, use more convenient flexible; Due to the open at both ends of cylindrical rod piece 3, when preventing that noumenal seat from toppling over, liquid is from cylindrical rod piece 3(pressure conduction device) overflow or pour out, at the interior diaphragm seal (as pellosil) that can also be provided with one deck elastically deformable in the air pressure access hole 33 at cylindrical rod piece 3 tops, ambient pressure is first delivered on diaphragm seal, then remake and use on liquid by diaphragm seal, diaphragm seal itself had both played sealing function, play again the effect of transmission of pressure, diaphragm seal need to be close to liquid surface setting, the accuracy that can improve barometric surveying as far as possible; Fall in the first chamber A in order to prevent cylindrical rod piece 3, the lateral wall of cylindrical rod piece 3 is along circumferentially forming the cambered outwards limited location snap ring 34 in footpath, and this limited location snap ring 34 can offset and realize the axial limiting of cylindrical rod piece 3 at this air intake opening 11 with the air intake opening of noumenal seat 1 11 upper surfaces.
The exhaust apparatus of the present embodiment adopts following structure: this exhaust apparatus includes the top cover 4, push rod 5, spring 6 and the base 7 that are placed in respectively in exhausr port 12, wherein, the position that the bottom of exhausr port 12 and the second chamber B are connected forms T shape pore structure, be to form step surface 121 on the bottom end opening of exhausr port 12, base 7 is limited on the step surface 121 with exhausr port 12, base 7 has a groove, one end of spring 6 is placed in the groove of base 7, base 7 also offers the pore 71 running through vertically, and the bottom of the other end of spring 6 and push rod 5 offsets; And, the cross section of top cover 4 becomes T shape, and this top cover 4 offers a through hole 43 vertically, and the T shape stub end 41 of top cover 4 can be limited in the top of exhausr port 12, the T shape microcephaly of top cover 4 holds in 42 top end openings that are placed in exhausr port 12, and this top cover 4 is tight fit connection with exhausr port 12; In order to ensure in normal operation the smooth discharge of gas, push rod 5, under the vertical state of forward, can form the gap that supplied gas is discharged all the time between the top of push rod 5 and the bottom of top cover 4; And in the time of sensor run-off the straight rollover or inversion, in order to prevent that electrolytic solution from overflowing from exhausr port 12, push rod 5 is under inversion or heeling condition, spring 6 has the trend that drives push rod 5 that the top of this push rod 5 is offseted with the bottom of top cover 4 all the time and through hole 43 is sealed, and the top cover 4 here and push rod 5 form a retaining valve, only have when under normal operating condition, gas can be discharged from exhausr port 12, once inclination or inversion, push rod 5 is shut by the through hole 43 of top cover 4, prevents that electrolytic solution from flowing out.So, when work, when the air pressure in the second chamber B increases, gas can finally be discharged from through hole 43 by the gap between the gap between exhausr port 12 and push rod 5, push rod 5 and top cover 4 bottoms, equate thereby air pressure in the second chamber B is maintained all the time with external atmospheric pressure, ensure that the liquid level difference producing between the first chamber A and the second chamber B can accurately reflect the air pressure of common flue.
The potential detection device of the present embodiment is mainly contact and can produces after electrolytic solution the electric conductor 8 of voltage, the present embodiment is selected the good conduction copper column (can be also other conductors) of electric conductivity, electric conductor 8 has multiple and arranges along the vertical height direction interval of the second chamber B in parallel to each other, the atmospheric pressure value gear that the quantity of electric conductor 8 is measured is according to actual needs determined, the sidewall of the second chamber B vertically offers spaced mounting hole 14, electric conductor 8 plugs and is fixed in corresponding mounting hole 14, one end of each electric conductor 8 is arranged in the second chamber B, the other end of each electric conductor 8 exposes to the output terminal as electric conductor 8 outside noumenal seat 1.
The present embodiment utilizes the state equation of ideal gas: PV=nRT formula, also has liquid pressure formula: P=ρ gh, the first chamber A in sensor body seat 1 and a linker of the second chamber B composition, under no-flue pressure state, atmospheric pressure in two cavitys is P1=P2, liquid pressure in two cavitys is P3=P4, i.e. P1+P3=P2+P4, and the first cavity is equal with the liquid level of the second chamber B, in the time that flue pressure changes, flue pressure acts on the liquid level of the first cavity by air intake opening 11, produce pressure △ P, now due to P1+P3+ △ P > P2+P4, in order to keep the pressure equilibrium of two cavitys, liquid level in the second chamber B rises and produces the liquid level difference that pressure is P0, while reaching stable state, P1+P3+ △ P=P2+P4+P0, be △ P=P0=ρ gh, here, ρ represents the density of electrolytic solution, h represents the liquid level difference height of the first chamber A and the second chamber B, different pressures can produce differing heights h, feed back to corresponding control circuit by potentiometric detection parts, can calculate the force value in public air channel through this control electricity.
Embodiment bis-, referring to Fig. 9, Figure 10:
The sensor construction of the present embodiment two and embodiment mono-are basic identical, difference is the concrete shape of the second chamber, exhausr port, and the mode of communicating of second chamber and exhausr port, for to show difference, in the present embodiment two, the structure that is different from embodiment mono-is used to the numeral with a slash in Reference numeral, all the other structures still retain the mark identical with embodiment mono-.
The second chamber B ' of the present embodiment two is an elongated passageway of vertically offering, the cavity of elongated passageway shape has not only been saved electrolytic solution, and can make the detection of sensor sensitiveer, once ambient pressure changes, the liquid level in the second chamber B ' just can occur significantly to change, more be convenient to detect, improved detection sensitivity;
In addition, the exhausr port 12 ' in the present embodiment two is the blind hole of a top end opening, between the second chamber B ' and exhausr port 12 ', is communicated with by the air hole 15 ' of laterally offering, and air hole 15 ' is opened in the position near the second chamber B ' top;
Wherein, exhaust apparatus includes the top cover 4 ', push rod 5 ' and the spring 6 ' that are placed in exhausr port 12 ', and one end of spring 6 ' and the bottom of exhausr port 12 ' offset, and the other end of spring 6 ' and the bottom of push rod 5 ' offset; Top cover 4 ' is fixedly installed on (both are wringing fit) in the top end opening of exhausr port 12 ', and top cover 4 ' offers a through hole 43 ' vertically; The top cover 4 ' here and a retaining valve of push rod 5 ' composition, when push rod 5 ' is under the vertical state of forward (normal operating conditions), can form the gap that supplied gas is discharged all the time between the top of push rod 5 ' and the bottom of top cover 4 '; When push rod 5 ' is under inversion or heeling condition, spring 6 ' has the trend that drives push rod 5 ' that its top is offseted with the bottom of top cover 4 ' all the time and to seal through hole 43 ', and push rod 5 ' seals after through hole 43 ', just can prevent that electrolytic solution from flowing out from exhausr port.
Claims (12)
1. a wind pressure sensor, it is characterized in that: described sensor includes noumenal seat (1), in described noumenal seat (1), cut apart and form the first chamber (A) and the second chamber (B that are interconnected, B '), described the first chamber (A) and the second chamber (B, B ') in be equipped with electrolytic solution, the overhead height of described the second chamber (B, B ') is greater than the overhead height of described the first chamber (A); Wherein, on described noumenal seat (1), offer air intake opening (11) and exhausr port (12,12 '), described air intake opening (11) and described the first chamber (A) are connected, and are provided with the pressure conduction device that can be connected with lampblack absorber air outlet in this air intake opening (11); Described exhausr port (12,12 ') and described the second chamber (B, B ') be connected, this exhausr port (12,12 ') in, be provided with exhaust apparatus, and, in described the second chamber (B, B '), be also provided with the potentiometric detection parts that can detect electrolytic solution height in this chamber;
Described the second chamber (B) includes the left half cavity and right half chamber that are interconnected, and the overhead height in described right half chamber is greater than the overhead height of described left half cavity; Wherein, described exhausr port (12) is opened in half top, chamber, the right side of described the second chamber (B), this exhausr port (12) is the Vertical Channel of a both ends open connection, and the bottom end opening of described exhausr port (12) is formed with step surface (121); Between the left half cavity of described the second chamber (B) and described exhausr port (12), be also communicated with by the air hole (15) of laterally offering, described air hole (15) is opened in the position near described left half cavity top;
Described exhaust apparatus includes the top cover (4), push rod (5), spring (6) and the base (7) that are placed in described exhausr port (12), wherein, the bottom of described base (7) and described step surface (121) offset, and described base (7) offers the pore (71) running through vertically; It is upper that one end of described spring (6) is arranged at described base (7), and the bottom of the other end of this spring (6) and described push rod (5) offsets; Described top cover (4) is fixedly installed in the top end opening of described exhausr port (12), this top cover (4) offers a through hole (43) vertically, described push rod (5), under the vertical state of forward, can form the gap that supplied gas is discharged all the time between the top of described push rod (5) and the bottom of described top cover (4); Described push rod (5) is under inversion or heeling condition, and described spring (6) has the trend that drives described push rod (5) that its top is offseted with the bottom of described top cover (4) all the time and to seal described through hole (43).
2. wind pressure sensor according to claim 1, is characterized in that: described the second chamber (B, B ') and the height difference of the first chamber (A) are for being greater than 30mm.
3. wind pressure sensor according to claim 1, it is characterized in that: described pressure conduction device is one to plug and the cylindrical rod piece (3) of axial limiting in described air intake opening (11), and described cylindrical rod piece (3) offers the inlet channel (31) connecting vertically.
4. wind pressure sensor according to claim 3, it is characterized in that: the inlet channel (31) of described cylindrical rod piece (3) is formed with air pressure exhaust opening (32) in bottom, the pore size of described air pressure exhaust opening (32) is 1～10mm.
5. wind pressure sensor according to claim 3, it is characterized in that: the inlet channel (31) of described cylindrical rod piece (3) is formed with air pressure access hole (33) on top, this air pressure access hole (33) is by draft tube and the described exhausr port (12 that tested air pressure can be imported, 12 ') be connected, the lateral wall of described cylindrical rod piece (3) is along circumferentially forming the cambered outwards limited location snap ring in footpath (34), described limited location snap ring (34) offsets and realizes the axial limiting of described cylindrical rod piece (3) in this air intake opening (11) with air intake opening (11) upper surface of described noumenal seat (1).
6. wind pressure sensor according to claim 3, is characterized in that: the spacing distance between the bottom of described cylindrical rod piece (3) and the inner bottom surface of described the first chamber (A) is 5～30mm.
7. wind pressure sensor according to claim 1, is characterized in that: described potential detection device includes multiple be parallel to each other and along the spaced electric conductor of vertical height direction (8) of described the second chamber (B).
8. wind pressure sensor according to claim 7, it is characterized in that: the sidewall of described the second chamber (B) vertically offers spaced mounting hole (14), described electric conductor (8) is conduction copper column, described conduction copper column plugs and is fixed in corresponding described mounting hole (14), and, described in each, one end of conduction copper column is arranged in described the second chamber (B), and described in each, the other end of conduction copper column exposes to the output terminal as described electric conductor (8) outside described noumenal seat (1).
9. a wind pressure sensor, it is characterized in that: described sensor includes noumenal seat (1), in described noumenal seat (1), cut apart and form the first chamber (A) and the second chamber (B that are interconnected, B '), described the first chamber (A) and the second chamber (B, B ') in be equipped with electrolytic solution, the overhead height of described the second chamber (B, B ') is greater than the overhead height of described the first chamber (A); Wherein, on described noumenal seat (1), offer air intake opening (11) and exhausr port (12,12 '), described air intake opening (11) and described the first chamber (A) are connected, and are provided with the pressure conduction device that can be connected with lampblack absorber air outlet in this air intake opening (11); Described exhausr port (12,12 ') and described the second chamber (B, B ') be connected, this exhausr port (12,12 ') in, be provided with exhaust apparatus, and, in described the second chamber (B, B '), be also provided with the potentiometric detection parts that can detect electrolytic solution height in this chamber;
Described the second chamber (B ') be an elongated passageway of vertically offering, described exhausr port (12 ') is the blind hole of a top end opening; Between described the second chamber (B ') and described exhausr port (12 '), be communicated with by the air hole (15 ') of laterally offering, described air hole (15 ') is opened in the position near described the second chamber (B ') top;
Described exhaust apparatus includes the top cover (4 '), push rod (5 ') and the spring (6 ') that are placed in described exhausr port (12 '), wherein, the bottom of one end of described spring (6 ') and described exhausr port (12 ') offsets, and the bottom of the other end of this spring (6 ') and described push rod (5 ') offsets; Described top cover (4 ') is fixedly installed in the top end opening of described exhausr port (12 '), this top cover (4 ') offers a through hole (43 ') vertically, described push rod (5 '), under the vertical state of forward, can form the gap that supplied gas is discharged all the time between the top of described push rod (5 ') and the bottom of described top cover (4 '); Described push rod (5 ') is under inversion or heeling condition, and described spring (6 ') has the trend that drives described push rod (5 ') that its top is offseted with the bottom of described top cover (4 ') all the time and to seal described through hole (43 ').
10. according to the wind pressure sensor described in arbitrary claim in claim 1～9, it is characterized in that: on described noumenal seat (1), be also provided with the stationary installation for described installation of sensors location.
11. wind pressure sensors according to claim 10, it is characterized in that: described stationary installation is a stamping forming plate (9), this plate (9) is fixedly connected on described noumenal seat (1) by screw, described stationary installation includes two flanks (91) that can be respectively recline mutually with installed surface, offers connecting hole (911) on flank described in each (91).
12. according to the wind pressure sensor described in arbitrary claim in claim 1～9, it is characterized in that: described noumenal seat (1) also offers inlet (13), is connected with detachable end (2) on described inlet (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036644.7A CN102589795B (en) | 2012-02-17 | 2012-02-17 | Wind pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036644.7A CN102589795B (en) | 2012-02-17 | 2012-02-17 | Wind pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589795A CN102589795A (en) | 2012-07-18 |
| CN102589795B true CN102589795B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210036644.7A Active CN102589795B (en) | 2012-02-17 | 2012-02-17 | Wind pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103776076B (en) * | 2014-01-27 | 2017-01-04 | 西安交通大学 | Use the full-automatic continuous adjustable range hood of capacitance type sensor |
| CN107727303B (en) * | 2017-10-26 | 2020-06-16 | 国网福建省电力有限公司 | Portable wind pressure sensor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4598541A (en) * | 1984-05-08 | 1986-07-08 | Osaka Gas Company Limited | Hot gas generator |
| CN201449304U (en) * | 2009-07-07 | 2010-05-05 | 广东万和新电气股份有限公司 | Wind pressure sensor used for gas furnace |
| JP2011203099A (en) * | 2010-03-25 | 2011-10-13 | Tokyo Electric Power Co Inc:The | Apparatus for inspecting operation of pressure equipment containing liquid, and method of inspecting operation of pressure equipment containing liquid using the apparatus |
| CN202648866U (en) * | 2012-02-17 | 2013-01-02 | 宁波方太厨具有限公司 | Wind pressure sensor |
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