CN216246980U

CN216246980U - Pressure sensor

Info

Publication number: CN216246980U
Application number: CN202122868122.0U
Authority: CN
Inventors: 罗权; 刘京复; 周维; 沈昌伟
Original assignee: Changsha Nanche Electrical Equipment Co ltd
Current assignee: Changsha Nanche Electrical Equipment Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-04-08
Anticipated expiration: 2031-11-22

Abstract

The utility model provides a pressure sensor. Comprises a base, a core body, a sheath and a pressing block; the core body and the sheath are arranged in the cavity, and the core body is embedded into the sheath to realize the isolation between the core body and the inner wall of the cavity. According to the utility model, the sheath is arranged between the seat and the core body, so that the core body is isolated from the inner wall of the cavity of the seat, and the core body is prevented from colliding with the seat when the locomotive works to generate vibration, so that the core body is damaged, and the service life and the measurement precision of the pressure sensor in the oil tank of the locomotive are influenced.

Description

Pressure sensor

Technical Field

The utility model relates to the technical field of sensors, in particular to a pressure sensor.

Background

The system for monitoring, counting and analyzing the energy consumption of the diesel locomotive needs to acquire the pressure change value of an oil tank through a pressure sensor and combine a corresponding oil tank model of the locomotive so as to calculate the residual oil quantity of the oil tank. The core body of the pressure sensor is a sensitive electronic component, vibration exists when a locomotive works, the core body directly contacts with the base, the core body collides with the base, the core body is damaged, and finally the service life of the pressure sensor and the testing precision of a product are influenced.

In view of the above, there is a need for a pressure sensor to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressure sensor to solve the problem that a sensor core body is easy to damage due to collision when in direct contact with a base.

In order to achieve the purpose, the utility model provides a pressure sensor which comprises a base, a core body, a sheath and a pressing block; the core body and the sheath are arranged in the cavity, and the core body is embedded into the sheath to realize the isolation between the core body and the inner wall of the cavity.

Preferably, the sheath comprises a first support ring and a second support ring, the first support ring is connected with the second support ring, and the combination realizes the support protection of the end part and the side surface of the core body.

Preferably, the first support ring and the second support ring are connected to form an L-shaped protection structure.

Preferably, the material of the sheath is rubber.

Preferably, the seat is detachably connected with the pressing block.

Preferably, the base is provided with a threaded hole for installing the pressing block.

Preferably, a sealing element is arranged inside the seat and abuts against one end of the core body far away from the sheath.

Preferably, the sealing member is an annular sealing ring.

The technical scheme of the utility model has the following beneficial effects:

(1) according to the utility model, the sheath is arranged between the base and the core body to realize the isolation between the core body and the inner wall of the cavity of the base, so that the core body is prevented from being damaged due to collision between the core body and the base when the locomotive works to generate vibration, and the service life and the measurement precision of the pressure sensor in the oil tank of the locomotive are influenced.

(2) According to the utility model, the sheath comprises a first support ring and a second support ring, the first support ring and the second support ring are connected to form an L-shaped protection structure, and the support protection of the end part and the side surface of the core body is realized through combination.

(3) In the utility model, the sheath is made of rubber and is used for protecting and buffering the core under the elastic action of the sheath when the locomotive vibrates.

(4) In the utility model, the base and the pressing block are detachably connected, so that the replacement of the core body in the base is convenient to realize.

(5) In the utility model, the sealing element is arranged in the base and is abutted against one end of the core body, which is far away from the sheath, so as to realize the sealing protection of the pressure sensor.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a pressure sensor according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of the core and the sheath in FIG. 1 according to the present embodiment;

the device comprises a base 1, a seat 1.1, a threaded hole 2, a core body 3, a sheath 3.1, a first support ring 3.2, a second support ring 4, a pressing block 5 and a sealing element.

Detailed Description

Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.

Example (b):

referring to fig. 1 to 2, the present embodiment is applied to the preparation of a pressure sensor of a locomotive oil tank.

A pressure sensor, see figure 1, comprises a base 1, a core body 2, a sheath 3 and a pressing block 4; the device comprises a base 1, a pressing block 4 and a core 2, wherein the base 1 and the pressing block 4 are connected to form a cavity for mounting the core 2, the core 2 and a sheath 3 are arranged in the cavity, the core 2 is embedded into the sheath 3 to realize isolation between the core 2 and the inner wall of the cavity, and collision between the core 2 and the base 1 caused by vibration generated during operation of a locomotive is avoided, so that the core 2 is damaged, and the service life and the measurement precision of a pressure sensor in an oil tank of the locomotive are influenced.

Referring to fig. 2, the sheath 3 includes a first support ring 3.1 and a second support ring 3.2, and the first support ring 3.1 is connected with the second support ring 3.2, so that the end and the side of the core 2 are supported and protected in combination. In this embodiment, the first support ring 3.1 supports and protects the upper end face of the core 2, and the second support ring 3.2 surrounds the outer peripheral surface of the core 2 to support and protect the side face of the core 2.

In this embodiment, the first support ring 3.1 and the second support ring 3.2 are integrally formed, and are connected to the outside of the core 2 to form a protection structure with an L-shaped cross section.

The sheath 3 is made of rubber and is used for protecting and buffering the core body 2 under the elastic action of the sheath 3 when the locomotive vibrates.

The base 1 is detachably connected with the pressing block 4, so that the core body 2 in the base 1 can be replaced conveniently.

In this embodiment, the pressing block 4 is mounted on the base 1 through a screw, and the base 1 is provided with a threaded hole 1.1 for mounting the pressing block 4.

And a sealing element 5 is arranged in the base 1, and the sealing element 5 is abutted against one end of the core body 2 far away from the sheath 3 so as to realize the sealing protection of the pressure sensor.

In this embodiment, the sealing member 5 is an annular sealing ring.

The assembly method of the pressure sensor comprises the following steps: firstly, the sealing element 5 is arranged in the base 1, then the core body 2 is arranged in the sheath 3, then the core body 2 and the sheath 3 are integrally placed in the base 1, and then the pressing block 4 is arranged on the base 1 through a screw, so that the core body 2 is protected in a closed mode. The pressure sensor can be connected to a locomotive oil tank for pressure measurement, and the core body 2 cannot collide with the inner wall of the base 1 in the measurement process.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure sensor is characterized by comprising a base (1), a core body (2), a sheath (3) and a pressing block (4); the core body (2) and the sheath (3) are arranged inside the cavity, and the core body (2) is embedded into the sheath (3) and is used for realizing the isolation between the core body (2) and the inner wall of the cavity.

2. A pressure sensor according to claim 1, characterized in that the sheath (3) comprises a first support ring (3.1) and a second support ring (3.2), the first support ring (3.1) being connected to the second support ring (3.2), the combination providing support protection for the ends and sides of the core (2).

3. A pressure sensor according to claim 2, characterized in that the first support ring (3.1) and the second support ring (3.2) are connected to form an L-shaped protective structure.

4. A pressure sensor according to claim 3, characterized in that the material of the sheath (3) is rubber.

5. A pressure sensor according to claim 1, characterized in that the holder (1) is detachably connected to the pressure piece (4).

6. A pressure sensor according to claim 5, characterized in that the holder (1) is provided with a threaded hole (1.1) for mounting the pressure piece (4).

7. A pressure sensor according to claim 1, characterized in that the seat (1) is provided internally with a seal (5), which seal (5) abuts against the end of the core (2) remote from the sheath (3).

8. A pressure sensor according to claim 7, characterized in that the sealing element (5) is an annular sealing ring.