CN115824317A - Multifunctional sensor - Google Patents
Multifunctional sensor Download PDFInfo
- Publication number
- CN115824317A CN115824317A CN202310123908.0A CN202310123908A CN115824317A CN 115824317 A CN115824317 A CN 115824317A CN 202310123908 A CN202310123908 A CN 202310123908A CN 115824317 A CN115824317 A CN 115824317A
- Authority
- CN
- China
- Prior art keywords
- chamber
- diaphragm
- pressure
- diaphragm assembly
- actuating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a multifunctional sensor which comprises a main cavity, wherein a first diaphragm component and a second diaphragm component are arranged in the main cavity at intervals so as to divide the main cavity into a first chamber, a second chamber and a third chamber, the first chamber is provided with a high-pressure oil port, the second chamber is provided with a low-pressure oil port, a first transmission component is arranged in the second chamber, the second diaphragm component is provided with a first actuating part and a second actuating part, and the third chamber is provided with a first switch part and a second switch part; when the pressure difference between the first chamber and the second chamber exceeds a pressure difference threshold value, the first diaphragm assembly generates deformation displacement towards one side of the second chamber due to the pressure difference and is sequentially transmitted into the third chamber through the first transmission component and the first actuating part so as to change the touch state of the first switch component; when the pressure in the second chamber exceeds the low-pressure threshold value, the second actuating part of the second diaphragm assembly is driven by the pressure to move towards one side of the third chamber so as to change the touch state of the second switch element. The invention has the advantages of monitoring and alarming of pressure, pressure difference and temperature, high integration level, small occupied volume and light weight, and meets the requirement of miniaturization development.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a multifunctional sensor.
Background
In a fuel oil and lubricating oil system of a flight engine, the pressure difference condition between a high-pressure cavity and a low-pressure cavity, the pressure device of the low-pressure cavity, the temperature of oil liquid and the like are generally required to be monitored.
Disclosure of Invention
The invention aims to solve the technical problems and the technical task of improving the prior art, provides a multifunctional sensor and solves the problems that a plurality of sensors with single functions need to be arranged to monitor multiple functions, the structure is complex and the occupied volume is large in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a multifunctional sensor comprises a main cavity body, wherein a first diaphragm component and a second diaphragm component are arranged in the main cavity body at intervals so as to divide the main cavity body into a first chamber, a second chamber and a third chamber, a high-pressure oil port is formed in the first chamber, a low-pressure oil port is formed in the second chamber, a first transmission component is arranged in the second chamber, a first actuating part and a second actuating part are arranged on the second diaphragm component, and a first switch part and a second switch part are arranged in the third chamber;
when the pressure difference between the first chamber and the second chamber exceeds a pressure difference threshold value, the first diaphragm assembly generates deformation displacement towards one side of the second chamber due to the pressure difference and is sequentially transmitted into the third chamber through the first transmission component and the first actuating part so as to change the touch state of the first switch component;
when the pressure in the second chamber exceeds a low-pressure threshold value, the second actuating part of the second diaphragm assembly is driven by the pressure to move towards one side of the third chamber so as to change the touch state of the second switch piece.
Further, the second diaphragm assembly includes annular membrane, annular membrane's the annular region that leans on radial inboard is connected with the annular plate in order to constitute and actuates portion two, the annular plate still is connected with the cover the hollow regional diaphragm sub-assembly in annular plate middle part, the diaphragm sub-assembly is including range upon range of splint two and diaphragm two that connect as an organic whole, set up the fretwork hole that exposes diaphragm two on the splint two, it sets up in fretwork hole department to actuate portion one, it includes to actuate portion one the lever portion that two both sides of diaphragm set up respectively, lever portion's one end with diaphragm two is connected, lever portion's the other end for diaphragm two is the cantilever state.
Further, diaphragm subassembly one includes diaphragm one, the annular region in the radial outside of diaphragm one by the components of a whole that can function independently part centre gripping and welded fastening of the main cavity body, the components of a whole that can function independently part of the main cavity body is in the both sides of diaphragm one still are provided with the contact surface that is the curved surface respectively, laminate to the contact surface when diaphragm one deforms.
Furthermore, the first transmission component comprises a first pushing part and a first disc spring, the first pushing part is arranged on the main cavity body in a sliding mode in the direction from the second diaphragm assembly to the first diaphragm assembly, and the first disc spring for resetting is arranged between the first pushing part and the main cavity body.
The diaphragm assembly III is arranged in the chamber III to divide the chamber III into a chamber IV, the switch piece I and the switch piece II are arranged in the chamber IV, the diaphragm assembly III is provided with an actuating part III and an actuating part IV, and a transmission member III and a transmission member II are arranged between the diaphragm assembly III and the diaphragm assembly II;
when the pressure difference between the first chamber and the second chamber exceeds a pressure difference threshold value, the first diaphragm assembly generates deformation displacement towards one side of the second chamber due to the pressure difference and is sequentially transmitted to the third actuating part through the first transmission component, the first actuating part and the third transmission component so as to change the touch state of the first switch part of the third actuating part;
when the pressure in the second chamber exceeds the low-pressure threshold value, the second actuating part of the second membrane component is driven by the pressure to move towards one side of the third chamber and is transmitted to the fourth actuating part through the second transmission component so as to change the touch state of the fourth actuating part to the second switch component.
The diaphragm assembly III comprises a third clamping plate, a third diaphragm and a third clamping plate which are sequentially stacked, hollow holes which are opposite to each other and expose the third diaphragm are formed in the third clamping plates on the two sides of the third diaphragm, the third actuating part is arranged at the hollow holes, the third actuating part comprises lever parts which are respectively arranged on the two sides of the third diaphragm, one end of each lever part is connected with the third diaphragm, and the other end of each lever part is in a cantilever state relative to the third diaphragm;
the actuating part IV is arranged at the position of another hollow hole and comprises lever parts respectively arranged at two sides of the diaphragm III, one end of each lever part is connected with the diaphragm III, and the other end of each lever part is in a cantilever state relative to the diaphragm III.
Furthermore, the second transmission member comprises a second pushing part, a second pushing disc, a second disc spring and a bow-shaped elastic sheet which are sequentially arranged from the second diaphragm assembly to the third diaphragm assembly in a transmission manner, the second pushing part is arranged in a through hole in a first interlayer arranged in the third chamber in a sliding manner along the second diaphragm assembly to the third diaphragm assembly, and the second pushing part is pushed by the second actuating part and is driven to the bow-shaped elastic sheet through the second pushing disc and the second disc spring so as to be driven by the bow-shaped elastic sheet to actuate the fourth actuating part.
Furthermore, the second transmission component further comprises a pressure regulating nut, the pressure regulating nut is connected to the third chamber in an adjustable mode, and the second disc spring and the top disc are pressed on the first interlayer in an adjustable mode through the pressure regulating nut.
The temperature sensing assembly is arranged on the shell, and a low-pressure oil way communicated to the low-pressure oil port and a high-pressure oil way communicated to the high-pressure oil port are arranged on the shell.
Furthermore, a socket is arranged on the shell, and the first switch part, the second switch part and the temperature sensing assembly are electrically connected to the socket.
Compared with the prior art, the invention has the advantages that:
the multifunctional sensor integrates various monitoring functions, has the functions of monitoring and alarming pressure, pressure difference and temperature, has high integration level, small occupied volume and light weight, meets the requirement of miniaturization development, has relatively independent monitoring functions without mutual influence, and ensures the reliability of functions.
Drawings
FIG. 1 is a schematic cross-sectional view of a first embodiment of a multifunctional sensor according to the present invention;
FIG. 2 is a schematic cross-sectional view of another embodiment of the multifunctional sensor of the present invention;
FIG. 3 is a schematic diagram of the components associated with a differential pressure alarm for the multi-function sensor of the present invention;
FIG. 4 is a schematic cross-sectional view of a diaphragm assembly III;
FIG. 5 is a schematic cross-sectional view of a second diaphragm assembly;
FIG. 6 is a schematic top view of the diaphragm assembly II;
FIG. 7 is a cross-sectional view of a first diaphragm assembly;
FIG. 8 is a schematic cross-sectional view of a second embodiment of the multifunctional sensor of the present invention;
FIG. 9 is a schematic cross-sectional view of another embodiment of the multifunctional sensor of the present invention;
fig. 10 is a schematic structural view of the temperature sensing assembly.
In the figure:
the temperature sensing device comprises a main cavity 1, a chamber four 11, a chamber three 12, a chamber two 13, a chamber one 14, a low-pressure oil port 15, a high-pressure oil port 16, a contact surface 17, a first interlayer 18, a diaphragm assembly three 2, a clamping plate three 21, a diaphragm three 22, an actuating portion three 23, an actuating portion four 24, a diaphragm assembly two 3, an actuating portion one 31, an actuating portion two 32, an annular membrane 33, an annular plate 34, a clamping plate two 35, a diaphragm two 36, a diaphragm assembly one 4, a diaphragm one 41, a switch piece one 51, a switch piece two 52, a transmission member three 61, a pushing piece three 611, a transmission member two 62, a pushing piece two 621, a top disc 622, a disc spring two 623, an arc-shaped elastic sheet 624, a pressure regulating nut 625, a transmission member one 63, a pushing piece one 631, a disc spring one 632, a shell 7, a low-pressure oil path 71, a high-pressure oil path 72, a socket 73, a temperature sensing assembly 8, a platinum film thermistor 81, a meter shell 82 and a lead 83.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The multifunctional sensor disclosed by the embodiment of the invention has multiple monitoring functions, has three monitoring functions of temperature, pressure and pressure difference, is high in integration level and small in occupied volume, and meets the requirement of miniaturization development.
In a first embodiment, as shown in fig. 1 to 7, a multifunctional sensor mainly includes a main cavity 1, a diaphragm assembly two 3 and a diaphragm assembly one 4, the main cavity 1 is substantially cylindrical, the diaphragm assembly two 3 and the diaphragm assembly one 4 are arranged in the main cavity 1 at intervals along a length direction of the main cavity 1, the diaphragm assembly two 3 and the diaphragm assembly one 4 respectively partition the main cavity 1, so as to partition the main cavity 1 into a chamber three 12, a chamber two 13 and a chamber one 14 which are isolated from each other, a switch member one 51 and a switch member two 52 are arranged in the chamber three 12, the switch member one 51 and the switch member two 52 specifically adopt micro switches, a change in a touch state can send different signals to realize an alarm, the chamber three 12 is an electrical structural chamber, electronic devices such as the switch member one 51 and the switch member two 52 are completely isolated from oil by using the diaphragm assembly two 3, so as to prevent the electronic devices such as the switch member one 51 and the switch member two 52 from being damaged by the oil, the integrity of the devices is guaranteed, the service life of the high-pressure oil chamber 16 is provided, the high-pressure oil chamber 13 is provided, the low-pressure oil chamber 13 is provided, the actuation component 13 is provided, and the actuation component 13 is provided with a high-pressure oil port 13, and the actuation component 13, the actuation component 13 is provided with a low-pressure oil port 13;
when the pressure difference between the first chamber 14 and the second chamber 13 exceeds the pressure difference threshold value, the first diaphragm assembly 4 generates deformation displacement towards one side of the second chamber 13 due to the pressure difference and is sequentially transmitted into the third chamber 12 through the first transmission member 63 and the first action part 31 so as to change the touch state of the first switch element 51;
when the pressure in the second chamber 13 exceeds the low pressure threshold, the second actuating portion 32 of the second diaphragm assembly 3 is driven by the pressure to move toward the third chamber 12 side, so as to change the touch state of the second switch 52.
Specifically, in this embodiment, the multifunctional sensor further includes a third diaphragm assembly 2, the third diaphragm assembly 2 is disposed in a third chamber 12 to divide the third chamber 12 into a fourth chamber 11, a first switch element 51 and a second switch element 52 are disposed in the fourth chamber 11, the third diaphragm assembly 2 is provided with a third actuating portion 23 and a fourth actuating portion 24, the third actuating portion 23 and the fourth actuating portion 24 are used for directly touching the first switch element 51 and the second switch element 52, respectively, and a third transmission member 61 and a second transmission member 62 are disposed between the third diaphragm assembly 2 and the second diaphragm assembly 3;
the complete detailed working process of the multifunctional sensor is thus:
when the pressure difference between the first chamber 14 and the second chamber 13 exceeds a pressure difference threshold value, because the first diaphragm assembly 4 is positioned between the second chamber 13 and the first chamber 14, the first diaphragm assembly 4 can generate deformation displacement towards one side of the second chamber 13 due to the acting force generated by the increased pressure difference, the first diaphragm assembly 4 is sequentially transmitted to the third actuating portion 23 through the first transmission member 63, the first actuating portion 31 and the third transmission member 61 to change the touch state of the third actuating portion 23 on the first switch element 51, specifically, the first diaphragm assembly 4 can push the first transmission member 63 to move towards one side of the second diaphragm assembly 3, so that the first transmission member 63 pushes the first actuating portion 31 on the second diaphragm assembly 3 to move, then the first actuating portion 31 pushes the third transmission member 61 to move towards one side of the third diaphragm assembly 2, then the third transmission member 61 drives the third actuating portion 23 on the third diaphragm assembly 2 to move, and finally the third actuating portion 23 changes the touch state of the first switch element 51, so that when the pressure difference between the second chamber 13 and the first chamber 14 exceeds the pressure difference threshold value, the first switch element 51 sends a signal different from the normal state to give an alarm;
when the pressure in the second chamber 13 exceeds the low-pressure threshold, the second actuating portion 32 of the second diaphragm assembly 3 is pushed to the third chamber 12 side due to the increase of the low-pressure oil pressure in the second chamber 13, so that the second actuating portion 32 drives the second transmission member 62 to act, the second transmission member 62 drives the fourth actuating portion 24 to act, and finally the fourth actuating portion 24 changes the touch state of the second switch element 52, so that when the pressure in the second chamber 13 exceeds the low-pressure threshold, the second switch element 52 sends a signal different from that in the normal state to give a pressure alarm.
The diaphragm component III 2 in the embodiment comprises a clamping plate III 21, a diaphragm III 22 and a clamping plate III 21 which are sequentially stacked, the clamping plate III 21, the diaphragm III 22 and the clamping plate III 21 are welded and connected into a whole, hollowed-out holes which are opposite to each other and expose the diaphragm III 22 are formed in the clamping plate III 21 on two sides of the diaphragm III 22, an actuating part III 23 is arranged at the hollowed-out holes, the actuating part III 23 comprises lever parts which are respectively arranged on two sides of the diaphragm III 22, one end of each lever part is connected with the diaphragm III 22, and the other end of each lever part is in a cantilever state relative to the diaphragm III 22;
the fourth actuating portion 24 is arranged at the other hollow hole, the fourth actuating portion 24 comprises lever portions arranged on two sides of the third membrane 22 respectively, one end of each lever portion is connected with the third membrane 22, and the other end of each lever portion is in a cantilever state relative to the third membrane 22.
The third actuating portion 23 and the fourth actuating portion 24 are both lever type structures, the third actuating portion 23 and the fourth actuating portion 24 are connected to the hollow hole exposing the third diaphragm 22 to form an elastic body structure capable of transmitting torque, as illustrated in fig. 1, when the lever portion of the third actuating portion 23 located on the right side of the third diaphragm 22 is touched, the lever portion twists around the connection position of the lever portion and the third diaphragm 22, and the lever portion located on the left side of the third diaphragm 22 is twisted correspondingly, that is, displacement is transmitted from the right side of the third diaphragm 22 to the left side of the third diaphragm 22, and further the lever portion located on the left side of the third diaphragm 22 of the third actuating portion 23 can touch the first switch member 51 to send a different signal different from a normal state to perform pressure difference alarm, and similarly, the fourth actuating portion 24 performs the same transmission process to touch the second switch member 52 to send a different signal different from the normal state to perform pressure alarm. In addition, the actions of the third actuating part 23 and the fourth actuating part 24 are independent and do not affect each other, when the third actuating part 23 and the fourth actuating part 24 act, only the respective lever parts of the third actuating part 23 and the fourth actuating part 24 are twisted relative to the third membrane 22, and the displacement change of the whole third membrane assembly 2 is not caused, in other words, when only the third actuating part 23 acts, the trigger state of the second switch piece 52 is not changed, and when only the fourth actuating part 24 acts, the trigger state of the first switch piece 51 is not changed, so that the accuracy and reliability of the sensor information are ensured.
In this embodiment, as shown in fig. 1, the third membrane component 2 is integrated with the first switch component 51 and the second switch component 52 to form a switch component, the switch component has a cylindrical shell, the first switch component 51 and the second switch component 52 are disposed in the shell, the third membrane component 2 is hermetically connected to an end side of the shell, the shell of the switch component is screwed with the main cavity 1 to realize detachable connection, and when the shell of the switch component is connected to the main cavity 1, the interior of the shell of the switch component is the fourth chamber 11.
As shown in fig. 5 and 6, the second diaphragm assembly 3 in this embodiment includes an annular film 33, an annular plate 34 is connected to an annular area of the annular film 33 close to the radial inner side to form a second actuating portion 32, the annular plate 34 is further connected to a diaphragm assembly covering a hollow area in the middle of the annular plate 34, the diaphragm assembly includes two clamp plates 35, two diaphragm plates 36 and two clamp plates 35 stacked in sequence, the three are connected into a whole through an annular welding portion, the two clamp plates 35 on one side of the two diaphragm plates 36 are fixedly connected to the annular plate 34, specifically, the two clamp plates are connected through welding, so as to ensure connection stability and sealing performance, the two clamp plates 35 on two sides of the two diaphragm plates 36 are provided with hollow holes exposing the two diaphragm plates 36, the first actuating portion 31 is disposed at the hollow hole, the first actuating portion 31 includes lever portions disposed on two sides of the two diaphragm plates 36, one end of the lever portion is connected to the second diaphragm portion 36, and the other end of the lever is in a cantilever state with respect to the second diaphragm plate 36. The diaphragm assembly 3 of the embodiment also plays a role of sealing and isolating, so that the chamber three 12 and the chamber two 13 are sufficiently sealed and isolated, the chamber two 13 is a closed chamber, and when the pressure of low-pressure oil in the chamber two 13 changes, the pressure can be effectively acted on the diaphragm assembly two 3 to ensure that the diaphragm assembly two 3 reliably acts to indicate the state, the diaphragm assembly two 3 of the embodiment has two functions, namely, when the pressure difference between the chamber one 14 and the chamber two 13 exceeds a pressure difference threshold value, the diaphragm assembly two 3 is used as an intermediate transmission member to perform transmission so as to perform pressure difference alarm, and when the pressure of the oil in the chamber two 13 exceeds the low-pressure threshold value, the diaphragm assembly two 3 is used as a driving mechanism to sense the change of the pressure in the chamber two 13 so as to drive a subsequent transmission mechanism to perform action so as to perform pressure alarm.
Specifically, the combined structure of the annular membrane 33 and the annular plate 34 acts when the oil pressure in the second chamber 13 changes, the annular membrane 33 is an elastic member, the annular plate 34 is a rigid member, the annular plate 34 includes a first plate located on one side surface of the annular membrane 33 and a second plate located on the other side surface of the annular membrane 33, the first plate and the second plate clamp the annular membrane 33 before the two plates are welded together, when the oil pressure in the second chamber 13 increases, the annular membrane 33 is pushed to deform towards the third chamber 12 side, the annular plate 34 is a rigid member and cannot deform, but the annular plate 34 generates displacement towards the third chamber 12 side under the driving of the annular membrane 33, and the annular plate 34 can drive the second transmission member 62 to act, and finally, the touch state of the second switch member 52 by the fourth actuation portion 24 is changed;
the first actuating portion 31 of the second diaphragm assembly 3 is actuated under the driving action of the first transmission member 63, the operating principle of the first actuating portion 31 is that the third actuating portion 23 and the fourth actuating portion 24 are the same, when the first transmission member 63 displaces leftward, the lever portion of the first actuating portion 31 located on the right side of the second diaphragm 36 is touched by the first transmission member 63, the lever portion is twisted around the joint of the lever portion and the second diaphragm 36, so that the lever portion located on the left side of the second diaphragm 36 is correspondingly twisted, that is, the displacement is transmitted from the right side of the second diaphragm 36 to the left side of the second diaphragm 36, and finally the touch state of the first switch member 51 is changed by the third actuating portion 23 through transmission, but the transmission process does not cause the second diaphragm assembly 3 to generate leftward displacement as a whole, in other words, the lever portion of the first actuating portion 31 is only twisted relative to the second diaphragm 36 to transmit torque, and does not cause the annular plate 34 to displace, and does not drive the second transmission member 62 to actuate, and does not cause the fourth actuating portion 24 to change the state of the second switch member 52, thereby ensuring accurate monitoring. Moreover, although the annular plate 34 is displaced toward the third chamber 12 due to the deformation of the annular membrane 33 when the oil pressure in the second chamber 13 increases, the diaphragm assembly formed by combining the clamping plate two 35 and the diaphragm two 36 is connected to the annular plate 34, so that the diaphragm assembly moves along with the annular plate 34, the deformation amount of the annular membrane 33 is small, so that the displacement amount of the annular plate 34 is small, in other words, the displacement amount of the diaphragm assembly formed by combining the clamping plate two 35 and the diaphragm two 36 is small, so that the displacement amount of the actuating part one 31 connected to the diaphragm assembly is small, the transmission of the transmission member three 61 is not caused, so that the touch state of the switch element one 51 is not finally caused to change, when the pressure difference between the first chamber 14 and the second chamber 13 exceeds the pressure difference threshold value, the actuating part one 31 is driven to operate by the transmission member one 63, and the transmission process of the actuating part one 31 is rotated in a twisting manner, so that the actuation amount of the actuating part one 31 is large, and the transmission of the transmission member three 61 can be driven to perform sufficient displacement to transmit, thereby ensuring that the state of the switch element 23 can change the touch state of the switch element 51. The second diaphragm component 3 described in this embodiment reliably realizes two transmission functions, so that the transmission process of the pressure difference alarm and the transmission of the pressure alarm are independent and do not affect each other.
As shown in fig. 7, the first diaphragm assembly 4 includes a first diaphragm 41, an annular region on the radial outer side of the first diaphragm 41 is clamped and welded and fixed by the split part of the main cavity 1, the structure is simple, the assembly is convenient, the connection stability is good, the split part of the main cavity 1 is provided with the contact surfaces 17 which are curved surfaces on two sides of the first diaphragm 41, the first diaphragm 41 can be effectively attached to the contact surfaces 17 of the split part of the main cavity 1 when deforming, the stress concentration is avoided, the long-term service life of the first diaphragm 41 is guaranteed, and the first diaphragm 41 is prevented from being plastically deformed and losing efficacy when the pressure fluctuation is large. When the pressure difference between the second chamber 13 and the first chamber 14 exceeds the pressure difference threshold value, the first diaphragm 41 acts first, the first diaphragm 41 plays a role of a driving mechanism at this time, the first diaphragm 41 generates an elastic deformation amount towards one side of the second chamber 13, then the first diaphragm 41 pushes the first transmission member 63 to move towards one side of the second diaphragm assembly 3, and then transmission is performed in sequence, and finally the touch state of the first switch member 51 is changed by the third actuation part 23 to perform pressure difference alarm.
As shown in fig. 1 and 2, the main chamber 1 in this embodiment is formed by combining three split parts, i.e., a left section, a middle section and a right section, the annular region of the annular membrane 33, which is located on the radially outer side, is clamped between the left section and the middle section and is welded and fixed, and the peripheral edge region of the first diaphragm 41 is clamped between the middle section and the right section and is welded and fixed.
The third diaphragm 22, the second diaphragm 36, the first diaphragm 41 and the annular membrane 33 are preferably made of stainless steel bands, the stainless steel bands have good elasticity, can be used as elastic elements, are equivalent to the stainless steel materials used for the main cavity 1 in terms of performance, have good welding performance and are convenient to weld. The thicknesses of the materials of the diaphragm III 22, the diaphragm II 36, the diaphragm I41 and the annular membrane 33 are dozens of micrometers, the diaphragms are connected in a laser welding mode, after welding, the action sensitivity of a thin-wall part needs to be guaranteed, the welding position needs to bear the oil pressure of 4.83MPa, meanwhile, the thin-wall part needs to be prevented from being welded through, argon arc welding with large welding energy is adopted in the welding mode, meanwhile, the contact part of the split part of the main cavity 1 and the diaphragm is designed into a boss structure, the rapid loss of welding heat is avoided, the welding efficiency is improved, in order to guarantee that the thin-wall part is not welded through, welding parameters and welding penetration need to be adjusted repeatedly during welding.
As shown in fig. 3, the transmission member three 61 includes a pushing part three 611 slidably disposed on the main cavity 1 in a direction from the diaphragm assembly three 2 to the diaphragm assembly two 3, specifically, the main cavity 1 has a first partition 18 located between the diaphragm assembly three 2 and the diaphragm assembly two 3 in the chamber three 12, the first partition 18 is provided with a through hole, and the pushing part three 611 is slidably disposed in the through hole, so that when the first actuating part 31 is actuated, the pushing part three 611 can be pushed to slide to one side of the diaphragm assembly three 2, and the pushing part three 611 pushes the third actuating part 23 on the diaphragm assembly three 2 to actuate, and finally, the touch state of the first switch 51 by the actuating part three 23 is changed to alarm the pressure difference.
The second transmission member 62 comprises a second pushing member 621, a second top disc 622, a second disc spring 623 and a bow-shaped spring piece 624 which are sequentially and drivingly arranged from the second diaphragm assembly 3 to the third diaphragm assembly 2, the second pushing member 621 is slidingly arranged in another through hole arranged on the first interlayer 18 along the direction from the second diaphragm assembly 3 to the third diaphragm assembly 2, the second pushing member 621 is pushed by the second actuating portion 32 and is driven to the bow-shaped spring piece 624 through the top disc 622 and the second disc spring 623 so that the fourth actuating portion 24 is driven to move by the bow-shaped spring piece 624, specifically, when the oil pressure in the second chamber 13 is increased, the annular plate 34 is pushed to move towards the third chamber 12 side, so that the annular plate 34 pushes the second pushing member 621 to slide towards the third diaphragm assembly 2 side, then the second pushing member 621 presses the second disc spring 623 through the top disc 622, the shape of the second disc spring 623 is subjected to overturning deformation to generate a larger movement amount, and then the second disc spring 623 transmits the movement amount to the fourth actuating portion 24 on the third diaphragm assembly 2 through the second disc spring 624, and finally the fourth disc spring 623 generates a touch control pressure change alarm state for the second actuation portion 24 to change the second switch 52;
further, the second transmission member 62 further comprises a pressure regulating nut 625, the pressure regulating nut 625 is connected in the third chamber 12 in an adjustable manner, the second disc spring 623 and the top disc 622 are adjustably pressed on the first interlayer 18 by the pressure regulating nut 625, pre-pressure of the second disc spring 623 is adjusted through the pressure regulating nut 625, so that a low-pressure threshold value of alarming is adjusted, the tighter the second disc spring 623 is pressed by the pressure regulating nut 625, the larger the low-pressure threshold value is, namely, the larger the pressure of oil in the second chamber 13 is, so that the first switch part 51 can be triggered to give pressure alarm. When the second disc spring 623 reverses, a stroke with larger displacement can be generated instantly, compared with smooth and continuous deformation of other elastic elements, the second disc spring 623 has more advantages in the aspects of adjusting precision and debugging efficiency, and the product realizes transmission by adopting the reversing function of the second disc spring 623.
In this embodiment, the third transmission member 61 and the second transmission member 62 are independent of each other, operate respectively and do not affect each other, the third transmission member 61 is driven only by the first actuation portion 31 on the second diaphragm assembly 3, the second transmission member 62 is driven only by the second actuation portion 32 on the second diaphragm assembly 3, the first actuation portion 31 on the second diaphragm assembly 3 only acts when the pressure difference between the second chamber 13 and the first chamber 14 exceeds the pressure difference threshold, and the second actuation portion 32 on the second diaphragm assembly 3 only acts when the pressure in the second chamber 13 exceeds the low pressure threshold, so that the third transmission member 61 and the second transmission member 62 can respectively and stably and independently perform a transmission function.
The first transmission member 63 comprises a first pushing part 631 and a first disc spring 632, the first pushing part 631 slides in a through hole of a second partition layer arranged in a second chamber 13 of the main cavity 1 in the direction from the second diaphragm assembly 3 to the first diaphragm assembly 4, the first disc spring 632 for resetting is arranged between the first pushing part 631 and the second partition layer, the structure is simple, the implementation is easy, the transmission reliability is good, when the pressure difference between the second chamber 13 and the first chamber 14 exceeds a pressure difference threshold value, the first pushing part 631 is pushed by the first film 41 to slide to one side of the second diaphragm assembly 3, finally, the touch state of the first switch part 51 by the third actuating part 23 is changed to give an alarm of the pressure difference, and when the oil pressure in the first chamber 14 is reduced, the first pushing part 631 resets under the action of the first disc spring 632, and the signal sent by the first switch part 51 becomes a signal in a normal state.
In the second embodiment, as shown in fig. 8 and 9, the multifunctional sensor further includes a temperature sensing assembly 8, a housing 7 is sleeved outside the main cavity 1, the temperature sensing assembly 8 is disposed on the housing 7, and the housing 7 is provided with a low-pressure oil path 71 communicated to the low-pressure oil port 15 and a high-pressure oil path 72 communicated to the high-pressure oil port 16. And the shell 7 is provided with a socket 73, the first switch element 51, the second switch element 52 and the temperature sensing assembly 8 are electrically connected to the socket 73, and the socket 73 realizes the connection between a product and an external circuit of the engine and transmits an alarm electric signal to a cockpit indication system through a cable.
Specifically, the temperature sensing assembly 8 measures-60 ℃ to 150 ℃ and indicates the fuel temperature at the fuel filter outlet, as shown in fig. 10, the temperature sensing assembly specifically includes a platinum film thermistor 81, a case 82 and a lead 83, the platinum film thermistor 81 is disposed in the case 82, the lead connected to the platinum film thermistor 81 is led out from the case 82 and connected to the socket 73 along a pipeline disposed on the case 7, the platinum film thermistor 81 mainly functions to output a corresponding resistor according to the temperature change, and the temperature sensing assembly 8 is fixed on the case 7 by laser welding, and is firmly and reliably connected by utilizing the change of the resistivity of a conductor along with the temperature change.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. A multifunctional sensor is characterized by comprising a main cavity (1), wherein a first membrane component (4) and a second membrane component (3) are arranged in the main cavity (1) at intervals to divide the main cavity (1) into a first chamber (14), a second chamber (13) and a third chamber (12), the first chamber (14) is provided with a high-pressure oil port (16), the second chamber (13) is provided with a low-pressure oil port (15), a first transmission member (63) is arranged in the second chamber (13), the second membrane component (3) is provided with a first actuating part (31) and a second actuating part (32), and the third chamber (12) is provided with a first switch piece (51) and a second switch piece (52);
when the pressure difference between the first chamber (14) and the second chamber (13) exceeds a pressure difference threshold value, the first diaphragm assembly (4) generates deformation displacement towards one side of the second chamber (13) due to the pressure difference and is sequentially transmitted into the third chamber (12) through the first transmission component (63) and the first actuating part (31) so as to change the touch state of the first switch component (51);
when the pressure in the second chamber (13) exceeds the low-pressure threshold value, the second actuating part (32) of the second diaphragm assembly (3) is driven by the pressure to act towards the third chamber (12) side so as to change the touch state of the second switch piece (52).
2. The multifunctional sensor according to claim 1, wherein the second diaphragm assembly (3) comprises an annular membrane (33), an annular plate (34) is connected to an annular area of the annular membrane (33) close to the inner side in the radial direction to form a second actuating portion (32), the annular plate (34) is further connected with a diaphragm assembly covering a hollow area in the middle of the annular plate (34), the diaphragm assembly comprises a second clamping plate (35) and a second diaphragm (36) which are connected in a stacked mode into a whole, a hollow hole exposing the second diaphragm (36) is formed in the second clamping plate (35), the first actuating portion (31) is arranged at the hollow hole, the first actuating portion (31) comprises levers respectively arranged on two sides of the second diaphragm (36), one end of each lever portion is connected with the second diaphragm (36), and the other end of each lever portion is in a cantilever state relative to the second diaphragm (36).
3. The multifunctional sensor according to claim 1, wherein the first diaphragm assembly (4) comprises a first diaphragm (41), an annular region of the radial outer side of the first diaphragm (41) is clamped and welded by a split part of the main cavity body (1), the split part of the main cavity body (1) is further provided with curved contact surfaces (17) on two sides of the first diaphragm (41), and the first diaphragm (41) is attached to the contact surfaces (17) when deformed.
4. The multifunctional sensor according to claim 1, wherein the first transmission member (63) comprises a first pushing member (631) and a first disc spring (632), the first pushing member (631) is slidably disposed on the main chamber (1) in the direction from the second diaphragm assembly (3) to the first diaphragm assembly (4), and the first disc spring (632) for resetting is disposed between the first pushing member (631) and the main chamber (1).
5. The multifunctional sensor according to claim 1, further comprising a third diaphragm assembly (2), wherein the third diaphragm assembly (2) is disposed in the third chamber (12) to divide the third chamber (12) into a fourth chamber (11), a first switch member (51) and a second switch member (52) are disposed in the fourth chamber (11), the third diaphragm assembly (2) is provided with a third actuating portion (23) and a fourth actuating portion (24), and a third transmission member (61) and a second transmission member (62) are disposed between the third diaphragm assembly (2) and the second diaphragm assembly (3);
when the pressure difference between the first chamber (14) and the second chamber (13) exceeds a pressure difference threshold value, the first diaphragm assembly (4) generates deformation displacement towards one side of the second chamber (13) due to the pressure difference and is sequentially transmitted to the third actuating part (23) through the first transmission member (63), the first actuating part (31) and the third transmission member (61) so as to change the touch state of the third actuating part (23) to the first switch piece (51);
when the pressure in the second chamber (13) exceeds the low-pressure threshold value, the second actuating part (32) of the second diaphragm assembly (3) is driven by the pressure to move towards the third chamber (12) side and is transmitted to the fourth actuating part (24) through the second transmission member (62) so as to change the touch state of the fourth actuating part (24) to the second switch element (52).
6. The multifunctional sensor according to claim 5, wherein the third diaphragm assembly (2) comprises a third clamping plate (21), a third diaphragm (22) and a third clamping plate (21) which are sequentially stacked, hollow holes which are opposite to each other and expose the third diaphragm (22) are formed in the third clamping plate (21) on two sides of the third diaphragm (22), the third actuating portion (23) is arranged at the hollow holes, the third actuating portion (23) comprises lever portions which are respectively arranged on two sides of the third diaphragm (22), one end of each lever portion is connected with the third diaphragm (22), and the other end of each lever portion is in a cantilever state relative to the third diaphragm (22);
the actuating part four (24) is arranged at the other hollow hole, the actuating part four (24) comprises lever parts respectively arranged on two sides of the diaphragm three (22), one end of each lever part is connected with the diaphragm three (22), and the other end of each lever part is in a cantilever state relative to the diaphragm three (22).
7. The multifunctional sensor according to claim 5, wherein the second transmission member (62) comprises a second pushing member (621), a top disk (622), a second disc spring (623) and a bow-shaped spring sheet (624), which are sequentially arranged from the second diaphragm assembly (3) to the third diaphragm assembly (2), the second pushing member (621) is slidably arranged in a through hole on the first interlayer (18) arranged in the third chamber (12) along the direction from the second diaphragm assembly (3) to the third diaphragm assembly (2), and the second pushing member (621) is pushed by the second actuating portion (32) and is transmitted to the bow-shaped spring sheet (624) through the top disk (622) and the second disc spring (623) to drive the fourth actuating portion (24) to move by the bow-shaped spring sheet (624).
8. The multifunctional sensor according to claim 7, wherein the second transmission member (62) further comprises a pressure regulating nut (625), the pressure regulating nut (625) is screwed and adjustably connected in the third chamber (12), and the pressure regulating nut (625) adjustably presses the disc spring II (623) and the top disc (622) against the first interlayer (18).
9. The multifunctional sensor according to any one of claims 1 to 8, further comprising a temperature sensing element (8), wherein a housing (7) is sleeved outside the main cavity (1), the temperature sensing element (8) is disposed on the housing (7), and a low-pressure oil path (71) communicated to the low-pressure oil port (15) and a high-pressure oil path (72) communicated to the high-pressure oil port (16) are disposed on the housing (7).
10. The multifunctional sensor according to claim 9, wherein a socket (73) is provided on the housing (7), and the first switch member (51), the second switch member (52) and the temperature sensing element (8) are electrically connected to the socket (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123908.0A CN115824317B (en) | 2023-02-16 | 2023-02-16 | Multifunctional sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123908.0A CN115824317B (en) | 2023-02-16 | 2023-02-16 | Multifunctional sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115824317A true CN115824317A (en) | 2023-03-21 |
| CN115824317B CN115824317B (en) | 2023-05-09 |
Family
ID=85521666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310123908.0A Active CN115824317B (en) | 2023-02-16 | 2023-02-16 | Multifunctional sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115824317B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999435A (en) * | 1975-04-24 | 1976-12-28 | Fischer & Porter Co. | Differential pressure transmitter |
| JPH03107737A (en) * | 1989-09-21 | 1991-05-08 | Yokogawa Electric Corp | Diaphragm seal type differential pressure measuring instrument |
| US5583294A (en) * | 1994-08-22 | 1996-12-10 | The Foxboro Company | Differential pressure transmitter having an integral flame arresting body and overrange diaphragm |
| JPH09218120A (en) * | 1996-02-13 | 1997-08-19 | Yamatake Honeywell Co Ltd | Pressure receiving flange |
| US20020178827A1 (en) * | 2001-05-21 | 2002-12-05 | Rongtai Wang | Sigma-delta analog to digital converter for process transmitter |
| CN2881560Y (en) * | 2006-02-16 | 2007-03-21 | 北京塞尔瑟斯仪表科技有限公司 | Multivariable transmitter of composite sensor |
| CN102221429A (en) * | 2011-06-16 | 2011-10-19 | 沈阳市传感技术研究所 | High-temperature pressure and temperature compounded sensor and preparation method thereof |
| CN102323004A (en) * | 2011-06-01 | 2012-01-18 | 合肥望远电子科技有限公司 | A kind of switching value differential pressure pick-up |
| CN202126325U (en) * | 2011-06-01 | 2012-01-25 | 合肥望远电子科技有限公司 | Switching value differential pressure sensor |
| CN102435341A (en) * | 2011-10-28 | 2012-05-02 | 山东昌润科技有限公司 | Compound temperature and pressure difference sensor |
| CN202281660U (en) * | 2011-10-28 | 2012-06-20 | 山东昌润科技有限公司 | Compound temperature and differential pressure sensor |
| CN103900740A (en) * | 2014-03-24 | 2014-07-02 | 上海丽恒光微电子科技有限公司 | Pressure sensor and manufacturing method thereof |
| CN104359611A (en) * | 2014-10-27 | 2015-02-18 | 温州大学 | Method for discriminating nonlinearity of pressure sensors under influence of internal stress |
| CN110186598A (en) * | 2019-06-24 | 2019-08-30 | 厦门大学嘉庚学院 | A kind of graphene film pressure sensor |
| CN110285916A (en) * | 2019-04-29 | 2019-09-27 | 麦克传感器股份有限公司西安分公司 | A kind of composite type pressure sensor |
| CN210349697U (en) * | 2019-10-08 | 2020-04-17 | 浙江力夫自控技术股份有限公司 | Differential pressure switch |
| CN112097840A (en) * | 2020-11-18 | 2020-12-18 | 南京高华科技股份有限公司 | Temperature-pressure differential pressure sensor based on high static pressure structure |
| CN212779714U (en) * | 2020-09-30 | 2021-03-23 | 四川新川航空仪器有限责任公司 | High-precision differential pressure annunciator |
| CN112798172A (en) * | 2021-01-27 | 2021-05-14 | 慧石（上海）测控科技有限公司 | Multifunctional sensor |
| CN114184233A (en) * | 2021-12-13 | 2022-03-15 | 上海立格仪表有限公司 | Intelligent sensor module and control method thereof |
-
2023
- 2023-02-16 CN CN202310123908.0A patent/CN115824317B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999435A (en) * | 1975-04-24 | 1976-12-28 | Fischer & Porter Co. | Differential pressure transmitter |
| JPH03107737A (en) * | 1989-09-21 | 1991-05-08 | Yokogawa Electric Corp | Diaphragm seal type differential pressure measuring instrument |
| US5583294A (en) * | 1994-08-22 | 1996-12-10 | The Foxboro Company | Differential pressure transmitter having an integral flame arresting body and overrange diaphragm |
| JPH09218120A (en) * | 1996-02-13 | 1997-08-19 | Yamatake Honeywell Co Ltd | Pressure receiving flange |
| US20020178827A1 (en) * | 2001-05-21 | 2002-12-05 | Rongtai Wang | Sigma-delta analog to digital converter for process transmitter |
| CN2881560Y (en) * | 2006-02-16 | 2007-03-21 | 北京塞尔瑟斯仪表科技有限公司 | Multivariable transmitter of composite sensor |
| CN102323004A (en) * | 2011-06-01 | 2012-01-18 | 合肥望远电子科技有限公司 | A kind of switching value differential pressure pick-up |
| CN202126325U (en) * | 2011-06-01 | 2012-01-25 | 合肥望远电子科技有限公司 | Switching value differential pressure sensor |
| CN102221429A (en) * | 2011-06-16 | 2011-10-19 | 沈阳市传感技术研究所 | High-temperature pressure and temperature compounded sensor and preparation method thereof |
| CN202281660U (en) * | 2011-10-28 | 2012-06-20 | 山东昌润科技有限公司 | Compound temperature and differential pressure sensor |
| CN102435341A (en) * | 2011-10-28 | 2012-05-02 | 山东昌润科技有限公司 | Compound temperature and pressure difference sensor |
| CN103900740A (en) * | 2014-03-24 | 2014-07-02 | 上海丽恒光微电子科技有限公司 | Pressure sensor and manufacturing method thereof |
| CN104359611A (en) * | 2014-10-27 | 2015-02-18 | 温州大学 | Method for discriminating nonlinearity of pressure sensors under influence of internal stress |
| CN110285916A (en) * | 2019-04-29 | 2019-09-27 | 麦克传感器股份有限公司西安分公司 | A kind of composite type pressure sensor |
| CN110186598A (en) * | 2019-06-24 | 2019-08-30 | 厦门大学嘉庚学院 | A kind of graphene film pressure sensor |
| CN210349697U (en) * | 2019-10-08 | 2020-04-17 | 浙江力夫自控技术股份有限公司 | Differential pressure switch |
| CN212779714U (en) * | 2020-09-30 | 2021-03-23 | 四川新川航空仪器有限责任公司 | High-precision differential pressure annunciator |
| CN112097840A (en) * | 2020-11-18 | 2020-12-18 | 南京高华科技股份有限公司 | Temperature-pressure differential pressure sensor based on high static pressure structure |
| CN112798172A (en) * | 2021-01-27 | 2021-05-14 | 慧石（上海）测控科技有限公司 | Multifunctional sensor |
| CN114184233A (en) * | 2021-12-13 | 2022-03-15 | 上海立格仪表有限公司 | Intelligent sensor module and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "《耐高温小型压差传感器的研制》" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115824317B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5969270A (en) | Force sensor | |
| US20050076719A1 (en) | Capacitive sensor | |
| CA2587978A1 (en) | Brake force transducer for electric brakes | |
| US20090236205A1 (en) | Pneumatic fire detector | |
| CA1270024A (en) | Multiple disc pressure responsive control device | |
| CN115824317A (en) | Multifunctional sensor | |
| WO2015153626A9 (en) | Swivel actuating pressure switch | |
| EP4109065A1 (en) | Pressure sensor | |
| JP2800972B2 (en) | Pressure-responsive metal diaphragm, pressure-responsive device and switch device | |
| US3786210A (en) | Sequentially actuated pressure switches having separate resistor elements associated with each | |
| US4495389A (en) | Pressure switch | |
| EP1143231B1 (en) | Pressure detecting apparatus | |
| EP2341320B1 (en) | Resistive position sensor | |
| US2358732A (en) | Pressure operated switch | |
| CN219416529U (en) | Diaphragm assembly and sensor | |
| CN207765371U (en) | It is a kind of that there is the novel pressure signalling means for bearing superelevation overload for a long time | |
| JP2776387B2 (en) | Refrigerant fluid pressure switch | |
| US3482732A (en) | Frangible safety means for relieving excess fluid pressure | |
| JPH02271233A (en) | Pressure gage | |
| RU2317532C1 (en) | Pressure relay | |
| JPH0416890B2 (en) | ||
| CN116296033A (en) | Diaphragm assembly and sensor | |
| JP4022634B2 (en) | pressure switch | |
| CN112762816B (en) | Redundancy angular displacement sensor with self-isolation blocking fault and use method | |
| CN217521909U (en) | High-reliability pressure switch assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |