CN209841262U - High-sensitivity graphene pressure sensor - Google Patents

Abstract

The utility model discloses a high sensitivity graphite alkene pressure sensor, including detection body and metal connecting pipe, the lateral wall integrated into one piece of detection body has the metal connecting pipe, the detection body communicates with the inside of metal connecting pipe each other, there is the maintenance cover through annular boss threaded connection on the detection body, the inboard surface of maintenance cover is fixed with the electrode, the electrode is provided with two, another the electrode is located the bottom of detection body inboard; through being provided with film, the elastic cotton body, electrode, power and the current detection body of maintenance cover, ring tube-shape, be convenient for avoid film and the great emergence of fluid impact force to damage, through being provided with ring plate, filter vat and spacing lug, be convenient for avoid long-time the use back, film deformation exists certain change, influences the sensitivity of film.

Description

High-sensitivity graphene pressure sensor

Technical Field

The utility model belongs to the technical field of graphite alkene pressure sensor, concretely relates to high sensitivity graphite alkene pressure sensor.

Background

The pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, the graphene pressure sensor is a high-photosensitivity sensor which is manufactured by graphene and has wide application, the detection effect is good, and the accuracy is high. The existing graphene pressure sensor generally senses the change of outside pressure through the deformation of a film or other elastic objects, but when the graphene pressure sensor is used, the film is generally rectangular, one side of the film is in contact with fluid needing to detect pressure, the film cannot be well located inside the fluid, the contact area of the fluid and the film is large when the graphene pressure sensor is stressed, more impact force is applied to the film, the film is easily damaged, in addition, after the graphene pressure sensor is used for a long time, impurities inside the fluid can be attached to the outer side surface of the film or the elastic object, the elastic effect is influenced, and the precision is changed when measurement is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high sensitivity graphite alkene pressure sensor, in order to solve the change that the deformation that proposes current graphite alkene pressure sensor generally comes perception outside pressure through film or other elastic object in the above-mentioned background art, but when using, the film is generally the rectangle, its one side and the fluid contact that needs detected pressure, can not be fine be in fluidic inside, fluid and film area of contact are big during the atress, it is also more to the film impact force, easily cause the film to damage, after using for a long time in addition, film or elastic object outside surface can adhere to the inside impurity of fluid, influence the elasticity effect, the precision takes place the change when causing the measurement problem.

In order to achieve the above object, the utility model provides a following technical scheme: a high-sensitivity graphene pressure sensor comprises a detection body and a metal connecting pipe, wherein the metal connecting pipe is integrally formed on the outer side wall of the detection body, the detection body is communicated with the inside of the metal connecting pipe, a maintenance cover is connected to the detection body through an annular boss in a threaded manner, an electrode is fixed on the inner side surface of the maintenance cover, the electrode is provided with two positions, the electrode is positioned at the bottom end of the inner side of the detection body at the other position, a first cable is arranged on the outer side of the detection body, a power supply is arranged at one end of the first cable, a wiring terminal of the power supply is respectively in electric wire connection with the two electrodes through the first cable, the outer side of the power supply is connected with a current detection body through a second cable, a film is fixed in the middle of the inner side of the detection body, elastic cotton is filled in the inner side of the, and a dust filtering mechanism is arranged on the inner side of the metal connecting pipe.

Preferably, the dust filtering mechanism comprises a ring plate, a filter vat and a limiting lug, the limiting lug is fixed on the inner side wall of the metal connecting pipe, the ring plate is connected to the inside of the metal connecting pipe through threads, the filter vat is integrally formed on the outer side wall of the ring plate, and the bottom end face of the outer side of the filter vat is attached to the side surface of the limiting lug.

Preferably, the ring plate and the limiting lug are both of annular structures, and the inner diameter of the ring plate is equal to that of the filter barrel.

Preferably, the surface of the other side of the ring plate is fixed with two rotating hand blocks, the two rotating hand blocks are distributed along the circular symmetry of the ring plate, and one end face of each rotating hand block is flush with one end face of the metal connecting pipe.

Preferably, the film is in a ring cylinder shape, and the inner diameter of the film is more than two centimeters.

Preferably, a sealing rubber pad is adhered and fixed on the inner side surface of the maintenance cover, and the sealing rubber pad is positioned on the outer side of the electrode.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through being provided with film, the elastic cotton body, electrode, power and the current detection body of maintenance cover, ring tube-shape, be convenient for make the film be in fluidic inside, reduce the impact area when film one side and fluid contact simultaneously, reduce the impact force, avoid film and the great emergence of fluid impact force to damage, be convenient for in addition change the elastic cotton body, avoid the inconvenience of maintaining.

(2) Through being provided with crown plate, filter vat and spacing lug, be convenient for filter the impurity of fluid inside, avoid after long-time the use, the film that reaction pressure changes adheres to too much impurity, leads to the film deformation to have certain change, influences the sensitivity of film, is convenient for improve the practicality of device, is just in the result of use of product.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view along A-A of the present invention;

fig. 3 is a schematic view of the present invention at a portion B of fig. 2;

fig. 4 is a schematic view of the present invention at a part C in fig. 2;

in the figure: 1. detecting a body; 2. a metal connecting pipe; 3. a maintenance cover; 4. a first cable; 5. a power source; 6. a current detection body; 7. a ring plate; 8. a filter vat; 9. an elastic cotton body; 10. a film; 11. sealing rubber; 12. an electrode; 13. rotating the hand block; 14. and a limiting bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a high-sensitivity graphene pressure sensor comprises a detection body 1 and a metal connecting pipe 2, wherein the metal connecting pipe 2 is integrally formed on the outer side wall of the detection body 1, the detection body 1 is communicated with the inside of the metal connecting pipe 2, a maintenance cover 3 is connected to the detection body 1 through an annular boss thread, the maintenance cover 3 is convenient to disassemble and assemble, and further maintenance is carried out on an elastic cotton body 9 and graphene, electrodes 12 are fixed on the inner side surface of the maintenance cover 3, the electrodes 12 are provided with two positions, the other electrode 12 is positioned at the bottom end of the inner side of the detection body 1, a first cable 4 is arranged on the outer side of the detection body 1, a power supply 5 is arranged at one end of the first cable 4, a wiring terminal of the power supply 5 is respectively in electric wire connection with the two electrodes 12 through the first cable 4, the outer side of the power supply 5 is connected with a current detection body 6 through a second cable, the change of current, the inside packing of film 10 has elastic cotton body 9, is provided with graphite alkene on the elastic cotton body 9, is convenient for through the change reaction pressure's of resistance size, and the inboard of metal connecting pipe 2 is provided with the dirt mechanism of straining.

In this embodiment, preferably, the dust filtering mechanism includes ring plate 7, filter vat 8 and spacing lug 14, metal connecting pipe 2's inside wall is fixed with spacing lug 14, there is ring plate 7 inside metal connecting pipe 2 through threaded connection, ring plate 7's lateral wall integrated into one piece has filter vat 8, be convenient for filter the impurity of fluid inboard, the bottom face in the filter vat 8 outside is laminated with spacing lug 14's side surface mutually, be convenient for restrict the length that filter vat 8 stretched into to metal connecting pipe 2 inboard.

In this embodiment, preferably, the ring plate 7 and the limit protrusion 14 are both annular structures, and the inner diameter of the ring plate 7 is equal to the inner diameter of the filter vat 8.

In this embodiment, preferably, the surface of the other side of the ring plate 7 is fixed with two rotating hand blocks 13, the two rotating hand blocks 13 are arranged to facilitate the rotation of the ring plate 7, so as to facilitate the disassembly and assembly of the filter vat 8, the two rotating hand blocks 13 are distributed along the circular symmetry of the ring plate 7, and one end face of each rotating hand block 13 is flush with one end face of the metal connecting pipe 2.

In this embodiment, it is preferable that the membrane 10 is in a ring shape, so as to increase the surface area of the membrane 10 contacting the fluid, and the inner diameter of the membrane 10 is greater than two centimeters.

In this embodiment, preferably, a sealing rubber pad 11 is adhered and fixed on the inner side surface of the maintenance cover 3, so as to seal the joint between the maintenance cover 3 and the detection body 1, and the sealing rubber pad 11 is located outside the electrode 12.

The utility model discloses a theory of operation and use flow: when the device is used, the outside gas or water flow passes through the inner side of the metal connecting pipe 2 and flows into the inner side of the detection body 1, the impurities in the gas or water flow are conveniently filtered through the filter barrel 8 on the inner side of the metal connecting pipe 2, the phenomenon that the impurities flow into the inner side of the detection body 1 and are attached to the outer side surface of the membrane 10 to influence the deformation effect of the membrane 10 is avoided, when more impurities are filtered by the filter barrel 8, a user can rotate the two rotating hand blocks 13 by rotating the two rotating hand blocks 13, the rotating hand blocks 13 move to enable the ring plate 7 to rotate, the filter barrel 8 is convenient to disassemble and assemble through the ring plate 7, the maintenance is convenient, after the gas or water flow flows into the inner side of the detection body 1, the pressure simultaneously extrudes the membrane 10 from the periphery of the outer side of the membrane 10, the contact area between the membrane 10 and the outer side is convenient to improve the pressure distribution, and the, be provided with graphite alkene on the elastic cotton body 9, and then change density to change the size of resistance, further the circuit changes, detects through current detection body 6, and current detection body 6 can external oscilloscope, is convenient for show pressure through the current change, and when elastic cotton body 9 elasticity reduced, the accessible sent the maintenance cover 3 soon, maintains the elastic cotton body 9 of film 10 inboard.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high sensitivity graphite alkene pressure sensor, includes detects body (1) and metal connecting pipe (2), the lateral wall integrated into one piece that detects body (1) has metal connecting pipe (2), the inside intercommunication of detecting body (1) and metal connecting pipe (2), there is protecting cover (3) on detecting body (1) through annular boss threaded connection, the inboard surface mounting of protecting cover (3) has electrode (12), electrode (12) are provided with two, another department electrode (12) are located the bottom that detects body (1) inboard, the outside that detects body (1) is provided with first cable (4), the one end of first cable (4) is provided with power (5), the wiring end of power (5) carries out the connection of electric lines through first cable (4) with two electrode (12) respectively, the outside of power (5) is connected with current detection body (6), its characterized in that through the second cable: the middle part of the inner side of the detection body (1) is fixed with a film (10), the inner side of the film (10) is filled with an elastic cotton body (9), graphene is arranged on the elastic cotton body (9), and the inner side of the metal connecting pipe (2) is provided with a dust filtering mechanism.

2. The high-sensitivity graphene pressure sensor according to claim 1, wherein: the dust filtering mechanism comprises a ring plate (7), a filter barrel (8) and a limiting bump (14), the limiting bump (14) is fixed on the inner side wall of the metal connecting pipe (2), the ring plate (7) is connected to the inside of the metal connecting pipe (2) through threads, the filter barrel (8) is integrally formed on the outer side wall of the ring plate (7), and the bottom end face of the outer side of the filter barrel (8) is attached to the side surface of the limiting bump (14).

3. The high-sensitivity graphene pressure sensor according to claim 2, wherein: the ring plate (7) and the limiting lug (14) are both of annular structures, and the inner diameter of the ring plate (7) is equal to that of the filter barrel (8).

4. The high-sensitivity graphene pressure sensor according to claim 3, wherein: the utility model discloses a metal connecting pipe, including the ring board, the opposite side fixed surface of ring board (7) has rotation hand piece (13), it is provided with two, two to rotate hand piece (13) along the circular symmetric distribution of ring board (7), it flushes with a metal connecting pipe (2) terminal surface to rotate hand piece (13) a terminal surface.

5. The high-sensitivity graphene pressure sensor according to claim 1, wherein: the film (10) is in a ring cylinder shape, and the inner diameter of the film (10) is larger than two centimeters.

6. The high-sensitivity graphene pressure sensor according to claim 1, wherein: and a sealing rubber pad (11) is adhered and fixed on the surface of the inner side of the maintenance cover (3), and the sealing rubber pad (11) is positioned on the outer side of the electrode (12).