Pressure sensor pressing structure for intelligent layered water injection

Abstract

The utility model provides an intelligent layered water injection pressure sensor compaction structure, which comprises a sensor seat, a first pressure sensing element and a cover plate, and is characterized in that the side wall of the sensor seat is provided with a first stepped hole, and the orifice of the first stepped hole is provided with a dovetail groove; the first pressure sensing element is arranged in the first step hole, the inner side end of the first pressure sensing element is limited by a step structure in the first step hole, and the outer side end of the first pressure sensing element is provided with a thin film used for pressure data acquisition; the cover plate is arranged in the dovetail groove, and the cover plate is clamped in the dovetail groove through the dovetail ribs on the two sides so that the first pressure sensing element can be tightly pressed in the first step hole. Therefore, through the structural design of the dovetail groove and the dovetail convex edge, the cover plate can be ensured to stably press the first pressure sensing element in the sensor seat, the first pressure sensing element is prevented from displacing in the working process, and the problem of low reliability of a traditional pressure sensor pressing mode can be improved.

Description

Technical Field

[0001] The utility model relates to the field of underground stratified water injection, in particular to a pressure sensor pressing structure for intelligent stratified water injection. Background Art

[0002] The downhole stratified water injection distributor is a device used for water injection development in oil fields. It can accurately control the water injection volume and pressure according to the water absorption capacity of different formations. Its main function is to improve water injection efficiency and reservoir development effect and extend the life of oil wells. Through adjustment, independent water injection is achieved for each layer, effectively avoiding interlayer interference and excessive water injection.

[0003] The pressure sensor is a very important pressure detection device commonly used in underground stratified water injection distributors. There are two problems with the conventional pressure sensor clamping structure: 1. The pressure sensor cover is set with a single hole to collect pressure, and the pressure sensor collects inaccurate data; 2. The traditional pressure sensor clamping method uses an interference fit between the cover and the sensor, which has the problems of low clamping reliability and inconvenient removal of the pressure cover. Utility Model Content

[0004] The main purpose of the utility model is to provide a pressure sensor clamping structure for intelligent stratified water injection, so as to at least improve the problem of low reliability of the pressure sensor clamping method in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a pressure sensor clamping structure for intelligent stratified water injection, including: a sensor seat, a first pressure sensing element and a cover plate. Among them, the side wall of the sensor seat is provided with a plurality of radial first step holes, and the opening of the first step hole is provided with a dovetail groove extending parallel to the radial direction; the first pressure sensing element is arranged in the first step hole, and the inner end of the first pressure sensing element is limited by the step structure in the first step hole, and the outer end of the first pressure sensing element is provided with a film for pressure data collection; the cover plate is arranged in the dovetail groove, and the cover plate is provided with a first channel, the first channel passes through the cover plate, and the two sides of the cover plate have dovetail ridges matching the dovetail groove, and the cover plate is clamped in the dovetail groove through the dovetail ridges on both sides to clamp the first pressure sensing element in the first step hole.

[0006] Furthermore, the surface of the cover plate opposite to the film of the first pressure sensing element is a bottom surface, the bottom surface is a plane, and a spot facing hole is provided on the bottom surface.

[0007] Furthermore, there are multiple first channels, and the multiple first channels evenly penetrate the countersunk hole and the outside of the pressure sensor clamping structure for intelligent stratified water injection.

[0008] Furthermore, the plurality of first channels are axially parallel and evenly arranged along the center of the bottom surface of the countersunk hole.

[0009] Furthermore, the upper surface of the cover plate is an arc-shaped structure, and the arc-shaped structure and the outer surface of the sensor seat are smooth with each other.

[0010] Furthermore, an axial second step hole is provided at the end of the sensor seat, and an internal thread structure is provided at the opening of the second step hole; the clamping structure of the pressure sensor for intelligent stratified water injection also includes: a second pressure sensing element and a plug, wherein the second pressure sensing element is arranged in the second step hole, and the second pressure sensing element is provided with a film for pressure data collection relative to the outer side of the sensor seat, and the plug has an external thread structure matching the internal thread structure, and the plug is threadedly connected with the internal thread structure through the external thread structure to clamp the second pressure sensing element in the second step hole, and the plug is provided with a plurality of second channels, and the plurality of second channels pass through the plug.

[0011] Furthermore, the plurality of second channels are axially parallel and evenly arranged along the center of the outer cross section of the plug.

[0012] Furthermore, the cover plate material is 17-4PH alloy.

[0013] The pressure sensor pressing structure for intelligent stratified water injection of the utility model technical solution comprises a sensor seat, a first pressure sensing element and a cover plate, wherein the side wall of the sensor seat is provided with a plurality of radial first step holes, and the opening of the first step hole is provided with a dovetail groove extending parallel to the radial direction; the first pressure sensing element is arranged in the first step hole, and the inner side end of the first pressure sensing element is limited by the step structure in the first step hole, and the outer side end of the first pressure sensing element is provided with a film for pressure data collection; the cover plate is arranged in the dovetail groove, and the cover plate is provided with a first channel, and the first channel passes through the cover plate, and the two sides of the cover plate have dovetail ridges matching the dovetail groove, and the cover plate is clamped in the dovetail groove through the dovetail ridges on both sides to press the first pressure sensing element in the first step hole. Therefore, through the structural design of the dovetail groove and the dovetail ridge, it is ensured that the cover plate can firmly press the first pressure sensing element in the sensor seat, and prevent the first pressure sensing element from being displaced during operation, thereby improving the stability and reliability of the sensor. This structural design is more solid and reliable than the traditional interference fit method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 It is a cross-sectional structural schematic diagram of a pressure sensor compression structure for intelligent stratified water injection that can be selected according to an embodiment of the utility model;

[0016] Figure 2This is a schematic diagram of the external structure of a pressure sensor compression structure for intelligent stratified water injection that can be selected according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of a sensor seat of a pressure sensor clamping structure for intelligent stratified water injection that can be selected according to an embodiment of the utility model;

[0018] Figure 4 It is a schematic cross-sectional structure diagram of a cover plate of a pressure sensor clamping structure for intelligent stratified water injection that can be selected according to an embodiment of the utility model;

[0019] Figure 5 It is a top view of a cover plate of a pressure sensor clamping structure for intelligent stratified water injection, which can be selected according to an embodiment of the utility model;

[0020] Figure 6 It is a side view of a plug of a pressure sensor clamping structure for intelligent stratified water injection that can be selected according to an embodiment of the utility model;

[0021] The above drawings include the following reference numerals:

[0022] 10. Sensor seat; 11. First step hole; 12. Dovetail groove; 13. Second step hole; 14. Internal thread structure; 20. First pressure sensing element; 30. Cover plate; 31. Bottom surface; 32. Countersunk hole; 33. First channel; 40. Second pressure sensing element; 50. Plug; 51. Second channel. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In the intelligent stratified water injection pressure sensor pressing structure of the utility model embodiment, as Figures 1 to 5As shown, it includes a sensor seat 10, a first pressure sensing element 20 and a cover plate 30. Among them, the side wall of the sensor seat 10 is provided with a plurality of radial first step holes 11, and the opening of the first step hole 11 is provided with a dovetail groove 12 extending parallel to the radial direction. The first pressure sensing element 20 is arranged in the first step hole 11, and the inner end of the first pressure sensing element 20 is limited by the step structure in the first step hole 11, and the outer end of the first pressure sensing element 20 is provided with a film for pressure data collection. The cover plate 30 is arranged in the dovetail groove 12, and the cover plate 30 is provided with a first channel 33, and the first channel 33 passes through the cover plate 30. The two sides of the cover plate 30 have dovetail ridges matching the dovetail groove 12. The cover plate 30 is clamped in the dovetail groove 12 through the dovetail ridges on both sides to press the first pressure sensing element 20 into the first step hole 11. Through the clamping design of the dovetail groove 12 and the dovetail ridge, the cover plate 30 can firmly fix the first pressure sensing element 20 in the sensor seat 10, effectively preventing the pressure sensing element 20 from being displaced during operation, and improving the stability and reliability of the pressure sensor clamping structure for intelligent stratified water injection.

[0025] As a preference, Figure 2 As shown, the upper surface of the cover plate 30 is an arc-shaped structure, and the arc-shaped structure and the outer surface of the sensor seat 10 are smooth with each other, which enhances the sealing and mechanical strength of the overall structure, thereby improving the durability of the sensor in harsh environments.

[0026] Furthermore, if Figure 4 and Figure 5 As shown, the surface of the cover plate 30 opposite to the film of the first pressure sensing element 20 is the bottom surface 31, which is a plane and has a spot facing hole 32. There are multiple first channels 33, and multiple first channels 33 evenly penetrate the spot facing hole 32 and the outside of the pressure sensor compression structure for intelligent stratified water injection, ensuring that the pressure sensor can collect external pressure at multiple points, reduce errors in the data transmission process, and improve the accuracy of data collection. Multiple first channels 33 are axially parallel and evenly arranged along the center of the bottom surface of the spot facing hole 32. This arrangement further ensures the consistency and reliability of data collection.

[0027] Furthermore, if Figure 1 , Figure 3 and Figure 6As shown, the end of the sensor seat 10 is provided with an axial second step hole 13, and the opening of the second step hole 13 is provided with an internal thread structure 14. The pressure sensor pressing structure for intelligent stratified water injection also includes a second pressure sensing element 40 and a plug 50. The second pressure sensing element 40 is arranged in the second step hole 13, and the second pressure sensing element 40 is provided with a film for pressure data acquisition relative to the outer side of the sensor seat 10. The plug 50 has an external thread structure matching the internal thread structure 14, and the plug 50 is screwed with the internal thread structure 14 through the external thread structure to press the second pressure sensing element 40 into the second step hole 13. The plug 50 is provided with a plurality of second channels 51, and the plurality of second channels 51 pass through the plug 50. The plurality of second channels 51 are axially parallel and evenly arranged along the center of the outer cross section of the plug 50, so that the pressure sensor can collect external pressure at multiple points at the same time, further improving the accuracy of data acquisition.

[0028] Preferably, the cover plate 30 is made of 17-4PH alloy, which has high strength and good corrosion resistance, ensuring the long-term stability and durability of the cover plate 30 in harsh environments. The arc-shaped structure of the cover plate 30 and the use of 17-4PH alloy material enhance the sealing and durability of the compression structure of the pressure sensor for intelligent stratified water injection of this embodiment, ensuring long-term use in harsh environments.

[0029] In specific use, this structural design ensures that the cover plate 30 can firmly fix the first pressure sensing element 20 in the sensor seat 10 through the clamping mode of the dovetail groove 12 and the dovetail ridge, effectively preventing the first pressure sensing element 20 from being displaced during operation, and improving the stability and reliability of the sensor. The design of multiple first channels 33 and multiple second channels 51 enables the pressure sensor to collect external pressure at multiple points, reduce errors in the data transmission process, and significantly improve the accuracy of data collection. Multi-point collection of external pressure solves the problem of inaccurate pressure data collected by traditional single-hole. The structure of the dovetail groove 12 and the dovetail ridge makes the cover plate 30 very easy to install and disassemble, without the need for complicated tools and steps, and increases the convenience of maintenance. The sealing design of the overall structure prevents the external environment from interfering with the sensing element, further ensuring the working reliability and data acquisition accuracy of the clamping structure of the pressure sensor for intelligent stratified water injection in this embodiment.

[0030] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pressure sensor pressing structure for intelligent stratified water injection, characterized in that: include: A sensor seat (10), wherein a side wall of the sensor seat (10) is provided with a plurality of radial first step holes (11), and a dovetail groove (12) extending parallel to the radial direction is provided at the opening of each of the first step holes (11); a first pressure sensing element (20), the first pressure sensing element (20) being arranged in the first step hole (11), and the inner end of the first pressure sensing element (20) being limited by the step structure in the first step hole (11), and the outer end of the first pressure sensing element (20) being provided with a film for collecting pressure data; A cover plate (30), wherein the cover plate (30) is arranged in the dovetail groove (12), the cover plate (30) is provided with a first channel (33), the first channel (33) passes through the cover plate (30), both sides of the cover plate (30) have dovetail ridges matching the dovetail groove (12), and the cover plate (30) is clamped in the dovetail groove (12) through the dovetail ridges on both sides so as to press the first pressure sensor element (20) into the first step hole (11).

2. The pressure sensor pressing structure for intelligent stratified water injection according to claim 1 is characterized in that: The surface of the cover plate (30) opposite to the film of the first pressure sensing element (20) is a bottom surface (31), the bottom surface (31) is a plane, and a spot facing hole (32) is provided on the bottom surface (31).

3. The pressure sensor pressing structure for intelligent stratified water injection according to claim 2 is characterized in that: There are a plurality of the first holes (33), and the plurality of the first holes (33) evenly penetrate the spot facing hole (32) and the outside of the cover plate (30).

4. The pressure sensor pressing structure for intelligent stratified water injection according to claim 3 is characterized in that: The plurality of first channels (33) are axially parallel and evenly arranged along the center of the bottom surface of the countersunk hole (32).

5. The pressure sensor pressing structure for intelligent stratified water injection according to claim 1 is characterized in that: The upper surface of the cover plate (30) is an arc-shaped structure, and the arc-shaped structure matches the curvature of the sensor seat (10).

6. The pressure sensor pressing structure for intelligent stratified water injection according to claim 1 is characterized in that: The end of the sensor seat (10) is provided with an axial second step hole (13), the opening of the second step hole (13) is provided with an internal thread structure (14), and the intelligent stratified water injection pressure sensor pressing structure further comprises: a second pressure sensing element (40), the second pressure sensing element (40) being arranged in the second step hole (13), and a film for collecting pressure data being arranged at an outer end of the second pressure sensing element (40) relative to the sensor seat (10); A plug (50), wherein the plug (50) has an external thread structure matching the internal thread structure, and the plug (50) is threadedly connected to the internal thread structure through the external thread structure to press the second pressure sensing element (40) into the second step hole (13), and the plug (50) is provided with a plurality of second channels (51), and the plurality of second channels (51) pass through the plug (50).

7. The pressure sensor pressing structure for intelligent stratified water injection according to claim 6 is characterized in that: The plurality of second channels (51) are axially parallel and evenly arranged along the center of the outer cross section of the plug (50).

8. The pressure sensor pressing structure for intelligent stratified water injection according to claim 1 is characterized in that: The cover plate material is 17-4PH alloy.

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