Fixed mounting seat of pressure sensor

Abstract

The utility model relates to a fixed mounting seat of a pressure sensor, which comprises a base, a sensor body and a protective tube, a base tube is arranged at the upper end of the base, the base tube penetrates through the base, the lower end of the sensor body is inserted into the base tube, the diameter of the base tube is gradually reduced from top to bottom, and the protective tube is arranged in the base tube. A conical necking opening is formed in the middle of the base tube, a sealing ring is arranged on the conical necking opening, a top cap is arranged at the upper end of the sensor body, the sensor body is sleeved with the protection tube, a spring column is arranged on the inner top of the upper end of the protection tube, the spring column abuts against the top cap, and the lower end of the protection tube is detachably connected with the base tube. A force in the vertical direction is applied to the sensor body through the protection pipe, the sealing ring is extruded to deform in cooperation with the conical necking of the base pipe, the situation that the sealing ring is driven to be screwed, consequently, contact between the sealing ring and the inner wall of the base pipe is uneven, a gap is generated, and the sealing performance is reduced is avoided, and the service life of the sealing ring is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sensor installation technology, and in particular to a fixed mounting base for a pressure sensor. Background Technology

[0002] A pressure sensor is a device that senses pressure signals and converts them into usable electrical output signals according to a certain rule. A pressure sensor typically consists of a pressure-sensitive element and a signal processing unit. The sensor comprises three parts: the sensing element, the conversion element, and the measuring circuit. It is widely used for hydraulic monitoring in pipelines; therefore, sealing is particularly important for the installation of pressure sensors. Current pressure sensors rely on sealing rings for sealing. However, during installation, the sensor is often screwed on, inevitably causing the sealing ring to twist as well, leading to a decrease in its sealing performance. Therefore, improvements are needed. Utility Model Content

[0003] Therefore, it is necessary to provide a mounting base for a pressure sensor to address the above problems.

[0004] A mounting base for a pressure sensor includes a base, a sensor body, and a protective tube. A base tube is provided at the upper end of the base, penetrating the base. The lower end of the sensor body is inserted into the base tube. The diameter of the base tube gradually decreases from top to bottom. A tapered constriction is provided in the middle of the base tube, and a sealing ring is provided on the tapered constriction. A top cap is provided at the upper end of the sensor body. The protective tube is sleeved outside the sensor body. A spring post is provided inside the upper end of the protective tube, abutting against the top cap. The lower end of the protective tube is detachably connected to the base tube.

[0005] Preferably, a sealing head is installed at the lower end of the sensor body. The sealing head includes a cone and a base. The lower end of the sensor body is inserted into the base. The base is connected to the base tube through the cone. The side wall of the base is provided with several slots. A sealing ring is fitted on the outer wall of the base.

[0006] Preferably, the lower end of the base is provided with a recess for installing a sealing gasket.

[0007] Preferably, the lower end of the protective tube is provided with a pin hole, and the pin passes through the pin hole to connect with the base tube.

[0008] The advantages of this invention are: by applying a vertical force to the sensor body using the protective tube, and in conjunction with the tapered constriction of the base tube, the sealing ring is squeezed and deformed, thus preventing the sealing ring from being twisted and causing uneven contact between the sealing ring and the inner wall of the base tube, resulting in gaps and reduced sealing performance, and effectively extending the service life of the sealing ring. Attached Figure Description

[0009] Figure 1 A three-dimensional schematic diagram of a pressure sensor mounting base according to one embodiment;

[0010] Figure 2 An exploded view of a mounting bracket for a pressure sensor;

[0011] Figure 3 This is a cross-sectional schematic diagram of a fixed mounting base for a pressure sensor. Detailed Implementation

[0012] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] like Figures 1-3As shown, a pressure sensor mounting base includes a base 1, a sensor body 2, and a protective tube 3. A base tube 11 is provided at the upper end of the base 1, and the base tube 11 passes through the base 1. The lower end of the sensor body 2 is inserted into the base tube 11. The diameter of the base tube 11 gradually decreases from top to bottom. A tapered constriction 12 is provided in the middle of the base tube 11, and a sealing ring 4 is provided on the tapered constriction 12. A top cap 21 is provided at the upper end of the sensor body 2. The protective tube 3 is sleeved on the outside of the sensor body 2. A spring post 31 is provided inside the upper end of the protective tube 3, and the spring post 31 abuts against the top cap 21. The lower end of the protective tube 3 is detachably connected to the base tube 11. Specifically, in this embodiment, during installation, the base 1 is mounted on a flange or platform on the pipeline using bolts. The sensor body 2 is cylindrical, with its lower end serving as the functional section. It contacts the fluid flowing through the pipeline via the base tube 11, thereby detecting the fluid pressure. The rear end of the sensor body 2 has a wiring harness, which transmits the detected pressure signal to the backend monitoring terminal. This is existing technology and will not be elaborated upon here. The diameter of the base tube 11 gradually decreases from top to bottom, achieved through a tapered constriction 12. The upper part of the base tube 11 is relatively large, facilitating the insertion of the sensor body 2. Upon insertion, the lower end acts on the sealing ring 4, deforming it in conjunction with the tapered constriction 12 to complete the seal. To avoid twisting the sealing ring 4, a protective tube 3 is used to apply a vertical force that deforms the sealing ring 4. Specifically, the protective tube 3 is fitted over the sensor body 2 to prevent the sensor body 2 from being exposed. A spring post 21 is installed inside the protective tube 3. When the spring post 21 acts on the top cap 21 of the sensor body 2, it is compressed. The further the lower end of the protective tube 3 descends, the greater the pressure applied to the top cap 21. The sensor body 2 then transmits a force to the sealing ring 4, causing it to deform. After the protective tube 3 descends to a certain height, it can be connected to the base tube 11 using pins or screws, making it detachable. This facilitates after-sales maintenance and replacement of damaged sealing rings 4 or the sensor body 2, making it more convenient to use. It also provides better overall sealing, less wear on the sealing ring 4, and extends its service life.

[0016] like Figures 2-3As shown, a sealing head 5 is installed at the lower end of the sensor body 2. The sealing head 5 includes a conical head 51 and a base 52. The lower end of the sensor body 2 is inserted into the base 52. The base 52 is connected to the base tube 11 through the conical head 51. Several slots 521 are provided on the side wall of the base 52, and a sealing ring is fitted on the outer wall of the base 52. Specifically, the sealing head 5 is made of plastic and includes a conical head 51 and a base 52. The conical head 51 is used to fit the conical constriction 12 to prevent the cylindrical functional part at the lower end of the sensor body 2 from directly acting on the sealing ring 4, which would result in a small contact area and poor sealing performance. We use a cone head 51 that is compatible with the conical constriction 12. When the cone head 51 is inserted, it increases the contact area with the sealing ring 4. It is also hollow to facilitate liquid flow. The upper seat 52 is used to wrap the functional part at the lower end of the sensor body 2. The seat 52 has a slot 521. After the functional part at the lower end of the sensor body 2 is inserted, the seat 52 expands, so that the sealing ring sleeved on the outside of the seat 52 contacts the inner wall of the base tube 11, thereby enhancing the overall sealing performance.

[0017] like Figure 2 As shown, the lower end of the base 1 is provided with a recess 13 for installing a sealing gasket, which enhances the sealing between the base 1 and the pipeline flange.

[0018] like Figures 1-2 As shown, the lower end of the protective tube 3 is provided with a pin hole 32, and the pin passes through the pin hole 32 to connect with the base tube 11, so that it can be disassembled and the disassembly and assembly are extremely simple and convenient.

[0019] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mounting base for a pressure sensor, characterized in that: The sensor body includes a base, a sensor body, and a protective tube. A base tube is provided at the upper end of the base and passes through the base. The lower end of the sensor body is inserted into the base tube. The diameter of the base tube gradually decreases from top to bottom. A tapered constriction is provided in the middle of the base tube, and a sealing ring is provided on the tapered constriction. A top cap is provided at the upper end of the sensor body. The protective tube is sleeved on the outside of the sensor body. A spring post is provided inside the upper end of the protective tube, and the spring post abuts against the top cap. The lower end of the protective tube is detachably connected to the base tube.

2. The mounting base for a pressure sensor as described in claim 1, characterized in that: A sealing head is installed at the lower end of the sensor body. The sealing head includes a cone head and a base body. The lower end of the sensor body is inserted into the base body. The base body is connected to the base tube through the cone head. Several slots are provided on the side wall of the base body. A sealing ring is fitted on the outer wall of the base body.

3. The mounting base for a pressure sensor as described in claim 1, characterized in that: The lower end of the base is provided with a recess for installing a sealing gasket.

4. The mounting base for a pressure sensor as described in claim 1, characterized in that: The lower end of the protective tube is provided with a pin hole, through which the pin is connected to the base tube.

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