CN211401525U

CN211401525U - Differential pressure sensor

Info

Publication number: CN211401525U
Application number: CN202020232783.7U
Authority: CN
Inventors: 陈国伟; 姜振岳; 陈乃华; 白平
Original assignee: Rui'an Ehua Auto Parts Co ltd
Current assignee: Rui'an Ehua Auto Parts Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-09-01
Anticipated expiration: 2030-02-28

Abstract

The utility model discloses a differential pressure sensor, including the face-piece, the back of face-piece is provided with the dorsal scale, be provided with rubber packing pad between face-piece and the dorsal scale, the face-piece all is provided with the waterproof layer with the surface of dorsal scale, the surface of waterproof layer is provided with the insulating layer, the surface of insulating layer is provided with high temperature resistant layer, high temperature resistant layer comprises polytetrafluoroethylene coating and the high temperature resistant coating of organosilicon. The utility model discloses a set up rubber seal pad, avoided water to get into through the gap between face-piece and the dorsal scale, cause the damage to the circuit board of inside, rubber seal pad still possesses good high temperature resistance performance moreover, through the mounting hole, rubber seal and mounting bolt's cooperation, not only made things convenient for the installation of face-piece and dorsal scale, but also avoided water to pass through the mounting hole and get into the sensor inner chamber, through setting up the waterproof layer, make face-piece and dorsal scale possess waterproof performance, avoided water infiltration entering sensor inner chamber.

Description

Differential pressure sensor

Technical Field

The utility model relates to a sensor technical field specifically is differential pressure sensor.

Background

The differential pressure sensor is used for measuring the difference between two pressures, and is generally used for measuring the differential pressure at the front end and the rear end of a certain device or part, the working principle of the differential pressure sensor is that the measured pressure directly acts on a diaphragm of the sensor, so that the diaphragm generates micro displacement in direct proportion to the water pressure, the capacitance value of the sensor is changed, the change is detected by an electronic circuit, and a standard measurement signal of the corresponding pressure is converted and output.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a differential pressure sensor to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the differential pressure sensor comprises a surface shell, wherein a back shell is arranged on the back surface of the surface shell, a rubber sealing gasket is arranged between the surface shell and the back shell, waterproof layers are arranged on the outer surfaces of the surface shell and the back shell, heat insulation layers are arranged on the outer surfaces of the waterproof layers, high-temperature resistant layers are arranged on the outer surfaces of the heat insulation layers, each high-temperature resistant layer is composed of a polytetrafluoroethylene coating and an organic silicon high-temperature resistant coating, and heat insulation cotton is bonded on the inner surfaces of the surface shell and the back shell.

Preferably, the mounting hole has all been seted up in the four corners of face-piece inner chamber, the front of face-piece is provided with the construction bolt with the mounting hole department of corresponding, the front side cover on construction bolt surface is equipped with rubber seal, the back of construction bolt runs through face-piece and dorsal scale in proper order and runs through to the inner chamber of dorsal scale.

Preferably, the waterproof layer is an acrylic waterproof coating, and the acrylic waterproof coating is coated on the outer surfaces of the front shell and the back shell.

Preferably, the heat-insulating layer is a composite silicate heat-insulating coating, and the composite silicate heat-insulating coating is coated on the outer surface of the waterproof layer.

Preferably, the polytetrafluoroethylene coating is coated on the outer surface of the heat insulation layer, and the organic silicon high-temperature resistant coating is coated on the outer surface of the polytetrafluoroethylene coating.

(III) advantageous effects

Compared with the prior art, the utility model provides a differential pressure sensor possesses following beneficial effect:

the utility model has the advantages that the rubber sealing gasket is arranged, water is prevented from entering through the gap between the surface shell and the back shell to damage the internal circuit board, the rubber sealing gasket also has good high temperature resistance, the installation of the surface shell and the back shell is convenient through the matching of the mounting hole, the rubber sealing ring and the mounting bolt, the water is also prevented from entering the inner cavity of the sensor through the mounting hole, the surface shell and the back shell have waterproof performance through the arrangement of the waterproof layer, the water is prevented from permeating into the inner cavity of the sensor, the pressure difference sensor has excellent high temperature resistance through the matching of the high temperature resistant layer, the polytetrafluoroethylene coating and the organic silicon high temperature resistant coating, the thermal insulation layer is arranged, when the outer side of the pressure difference sensor generates high temperature, the high temperature is blocked, the heat can not be transferred to the inner cavity of the sensor, and the thermal insulation cotton is arranged, after the high temperature resistant layer and the insulating layer on the outer side are damaged, the heat insulation cotton can play a heat insulation effect, the service life of the differential pressure sensor is further prolonged, the defect that the existing differential pressure sensor is poor in waterproof and heat insulation effects is overcome, the differential pressure sensor is easy to damage during working, and the service life of the differential pressure sensor is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the side view of the present invention;

FIG. 4 is a schematic view of the surface layer structure of the face shell of the present invention;

fig. 5 is a schematic view of the sectional structure of the high temperature resistant layer of the present invention.

In the figure: 1. a face shell; 2. a back shell; 3. heat insulation cotton; 4. a waterproof layer; 5. a thermal insulation layer; 6. a high temperature resistant layer; 601. a polytetrafluoroethylene coating; 602. an organosilicon high-temperature resistant coating; 7. a rubber gasket; 8. mounting holes; 9. a rubber seal ring; 10. and (6) installing a bolt.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses a face-piece 1, dorsal scale 2, thermal-insulated cotton 3, waterproof layer 4, insulating layer 5, high temperature resistant layer 6, polytetrafluoroethylene coating 601, organosilicon high temperature resistant coating 602, rubber seal pad 7, mounting hole 8, rubber seal 9 and mounting bolt 10 part are the parts that general standard or technical personnel in the field know, and its structure and principle all are that this technical personnel all can learn through the technical manual or learn through conventional experimental method.

Referring to fig. 1-5, the differential pressure sensor comprises a face shell 1, a back shell 2 is arranged on the back of the face shell 1, mounting holes 8 are respectively formed in four corners of an inner cavity of the face shell 1, a mounting bolt 10 is arranged on the front of the face shell 1 and corresponds to the mounting hole 8, a rubber seal ring 9 is sleeved on the front side of the surface of the mounting bolt 10, the back of the mounting bolt 10 sequentially penetrates through the face shell 1 and the back shell 2 and penetrates into the inner cavity of the back shell 2, through the matching of the mounting hole 8, the rubber seal ring 9 and the mounting bolt 10, the mounting of the face shell 1 and the back shell 2 is facilitated, water is prevented from entering the inner cavity of the sensor through the mounting hole 8, a rubber seal gasket 7 is arranged between the face shell 1 and the back shell 2, through the arrangement of the rubber seal gasket 7, the water is prevented from entering through a gap between the face shell 1 and the back shell 2 and damaging an internal circuit board, and the rubber seal gasket 7 has good, the waterproof layers 4 are arranged on the outer surfaces of the surface shell 1 and the back shell 2, the waterproof layers 4 are acrylic waterproof coatings, the acrylic waterproof coatings are coated on the outer surfaces of the surface shell 1 and the back shell 2, the waterproof layers 4 enable the surface shell 1 and the back shell 2 to have waterproof performance, water is prevented from permeating into an inner cavity of the sensor, the outer surface of the waterproof layer 4 is provided with a heat insulation layer 5, the heat insulation layer 5 is a composite silicate heat insulation coating, the composite silicate heat insulation coating is coated on the outer surface of the waterproof layer 4, through the arrangement of the heat insulation layer 5, when high temperature is generated on the outer side of the pressure difference sensor, high temperature is blocked, heat is prevented from being transmitted to the inner cavity of the sensor, the outer surface of the heat insulation layer 5 is provided with a high temperature resistant layer 6, the high temperature resistant layer 6 is composed of a polytetrafluoroethylene coating 601 and an organic, organosilicon high temperature resistant coating 602 scribbles the surface of locating polytetrafluoroethylene coating 601, through high temperature resistant layer 6, polytetrafluoroethylene coating 601 and organosilicon high temperature resistant coating 602's cooperation, make pressure differential sensor possess excellent high temperature resistance, face-piece 1 all bonds with the internal surface of dorsal scale 2 and has thermal-insulated cotton 3, through setting up thermal-insulated cotton 3, after high temperature resistant layer 6 and the damage of insulating layer 5 in the outside, thermal-insulated cotton 3 can play thermal-insulated effect, pressure differential sensor's life has further been improved.

When in use, the rubber sealing gasket 7 is arranged, water is prevented from entering through a gap between the face shell 1 and the back shell 2 and damaging an internal circuit board, the rubber sealing gasket 7 also has good high-temperature resistance, the cooperation of the mounting hole 8, the rubber sealing ring 9 and the mounting bolt 10 is used for facilitating the mounting of the face shell 1 and the back shell 2 and preventing the water from entering the inner cavity of the sensor through the mounting hole 8, the waterproof layer 4 is arranged for enabling the face shell 1 and the back shell 2 to have waterproof performance and preventing the water from permeating into the inner cavity of the sensor, the high-temperature resistant layer 6, the polytetrafluoroethylene coating 601 and the organic silicon high-temperature resistant coating 602 are matched for enabling the pressure difference sensor to have excellent high-temperature resistance, the heat insulation layer 5 is arranged for blocking high temperature when high temperature is generated outside the pressure difference sensor, and heat can not be transferred to the inner cavity of the sensor, through setting up thermal-insulated cotton 3, after high temperature resistant layer 6 and the 5 damage of insulating layer in the outside, thermal-insulated cotton 3 can play thermal-insulated effect, has further improved differential pressure sensor's life, has solved current differential pressure sensor and has had the shortcoming waterproof and that thermal-insulated effect is poor for differential pressure sensor damages easily at the during operation, thereby has reduced differential pressure sensor life's problem.

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

1. Differential pressure sensor, including face-piece (1), its characterized in that: the back of face-piece (1) is provided with dorsal scale (2), be provided with rubber packing pad (7) between face-piece (1) and dorsal scale (2), the surface of face-piece (1) and dorsal scale (2) all is provided with waterproof layer (4), the surface of waterproof layer (4) is provided with insulating layer (5), the surface of insulating layer (5) is provided with high temperature resistant layer (6), high temperature resistant layer (6) comprise polytetrafluoroethylene coating (601) and organosilicon high temperature resistant coating (602), the internal surface of face-piece (1) and dorsal scale (2) all bonds has thermal-insulated cotton (3).

2. The differential pressure sensor as recited in claim 1, wherein: mounting hole (8) have all been seted up in the four corners of face casing (1) inner chamber, the front of face casing (1) is provided with mounting bolt (10) with mounting hole (8) department of corresponding, the front side cover on mounting bolt (10) surface is equipped with rubber seal (9), the back of mounting bolt (10) runs through face casing (1) and dorsal scale (2) in proper order and runs through to the inner chamber of dorsal scale (2).

3. The differential pressure sensor as recited in claim 1, wherein: the waterproof layer (4) is an acrylic waterproof coating, and the acrylic waterproof coating is coated on the outer surfaces of the face shell (1) and the back shell (2).

4. The differential pressure sensor as recited in claim 1, wherein: the heat insulation layer (5) is a composite silicate heat insulation coating, and the composite silicate heat insulation coating is coated on the outer surface of the waterproof layer (4).

5. The differential pressure sensor as recited in claim 1, wherein: the polytetrafluoroethylene coating (601) is coated on the outer surface of the heat insulation layer (5), and the organic silicon high-temperature resistant coating (602) is coated on the outer surface of the polytetrafluoroethylene coating (601).