Underwater pressure-bearing sealing vibration sensor structure
By using corrugated springs to clamp the chip in the vibration sensor of the well submersible motor and designing an integrated cable connector, the problems of sensor failure and leakage under high pressure environment are solved, achieving higher reliability and sealing.
Patent Information
- Application Number
- CN202520125318.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The vibration sensor of the existing well submersible motor is prone to sensor failure or water leakage under high pressure environment.
The sensor utilizes an underwater pressure-sealed vibration sensor structure. The sensor chip is held in place by corrugated springs on either side. These springs elastically deform when the housing is compressed, buffering the pressure and preventing it from being directly transferred to the chip. Furthermore, the cable and connector are designed as an integrated structure, eliminating leaks associated with traditional threaded connections.
It effectively avoids the malfunction problem caused by the external pressure being directly transmitted to the vibration sensor chip in the traditional structure, and avoids water leakage through the integrated cable connector structure, thereby improving the reliability and sealing of the sensor.
Smart Images
Figure CN223346267U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of well-used submersible motors, and in particular relates to an underwater pressure-bearing sealed vibration sensor structure. Background Art
[0002] Submersible motors for wells are typically installed in deep wells with submersible pumps to extract water. Both the motor and pump are submerged in water, and the motor is filled with cooling water to maintain internal heat dissipation and lubricate the sliding bearings. The motor is submerged in well water, up to hundreds of meters deep, creating high pressure. Consequently, the sensor components within the motor must withstand high pressure and be sealed. Currently, mainstream vibration sensors on the market use integrated chips. To secure the chip, the chip is mounted in a metal housing and potted with epoxy resin or sealant. This solution provides a good seal, but excessive external pressure can cause the metal housing and the epoxy resin or sealant to deform, transferring pressure to the vibration sensor chip, causing sensor failure. The cable exiting the vibration sensor is secured and sealed with bolts, which can leak when exposed to excessive external pressure. Utility Model Content
[0003] The present invention aims to solve the above problems, remedy the deficiencies of the prior art, and provide an underwater pressure-bearing sealed vibration sensor structure; the present invention can solve the problem of pressure failure or water leakage that may occur in a submersible motor vibration sensor for a well under high pressure.
[0004] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions.
[0005] The utility model provides an underwater pressure-bearing sealed vibration sensor structure, including a vibration sensor chip, characterized in that the vibration sensor chip is arranged in a shell, and the vibration sensor chip is clamped by two corrugated spring pieces on both sides, and the two corrugated spring pieces each have one end that presses against the inner wall of the shell and the other end that presses against one side of the vibration sensor chip, the vibration sensor chip is connected to an integrated cable connector, the integrated cable connector is connected and fixed to a fixed base, and the fixed base is fixedly connected to the shell.
[0006] Furthermore, the fixed base and the shell are matched with each other through a stop structure and are fixed by welding.
[0007] The beneficial effects of the utility model.
[0008] This utility model can buffer the damage caused by the elastic deformation of the internal corrugated spring when the shell is deformed under pressure. This avoids the phenomenon of vibration sensor chip being directly transmitted to the traditional solid structure, causing chip failure. In addition, the cable and connector form an integrated structure, avoiding the leakage problem caused by the traditional threaded connection structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0010] Figure 1 It is a side sectional structural schematic diagram of the present utility model.
[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model when viewed from above inside the shell.
[0012] Markings in the figure: 1 is the integrated cable connector, 2 is the fixed base, 3 is the housing, 4 is the corrugated spring, and 5 is the vibration sensor chip. DETAILED DESCRIPTION
[0013] As shown in the accompanying drawings, this embodiment provides an underwater pressure-bearing sealed vibration sensor structure, including a vibration sensor chip 5. The vibration sensor chip 5 is arranged in a housing 3, and the housing 3 seals the vibration sensor chip 5 inside.
[0014] The vibration sensor chip 5 is clamped by two corrugated spring pieces 4 on both sides. One end of each corrugated spring piece 4 presses against the inner wall of the outer shell 3, and the other end presses against one side of the vibration sensor chip 5. The corrugated spring pieces 4 on both sides play a buffering and protective role for the vibration sensor chip 5. When the outer shell 3 is deformed under pressure underwater, the corrugated spring pieces 4 inside are squeezed to undergo elastic deformation, thereby avoiding direct pressure on the vibration sensor chip 5 and causing failure of the vibration sensor chip 5.
[0015] The vibration sensor chip 5 is connected to the integrated cable connector 1. The integrated cable connector 1 makes the traditional cable and connector into an integral structure, and then connects the inner wire of the cable to the vibration sensor chip 5, thereby avoiding the possibility of water leakage when the external pressure is too high due to the threaded connection between the traditional cable and the connector.
[0016] The integrated cable connector 1 is connected and fixed to the fixed base 2 , and the fixed base 2 and the housing 3 are matched with each other through a stopper structure and fixed by welding to further ensure the overall sealing.
[0017] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the implementation methods of the present invention. Ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the scope of protection of the present invention.
Claims
1. An underwater pressure-bearing sealed vibration sensor structure, comprising a vibration sensor chip (5), characterized in that: The vibration sensor chip (5) is arranged in the housing (3), and the vibration sensor chip (5) is clamped by two corrugated springs (4) on both sides, and the two corrugated springs (4) each have one end against the inner wall of the housing (3) and the other end against one side of the vibration sensor chip (5). The vibration sensor chip (5) is connected to the integrated cable connector (1), and the integrated cable connector (1) is connected and fixed to the fixed base (2), and the fixed base (2) is fixedly connected to the housing (3).
2. The underwater pressure-bearing sealed vibration sensor structure according to claim 1, characterized in that: The fixed base (2) and the outer shell (3) are matched with each other through a stop structure and are fixed by welding.