CN-224216213-U - Underground quartz resonance type pressure sensor

CN224216213UCN 224216213 UCN224216213 UCN 224216213UCN-224216213-U

Abstract

The utility model relates to the technical field of pressure sensors, and discloses an underground quartz resonance type pressure sensor, which comprises a sealed shell, a corrugated pipe, a chip clamp, a supporting structure and a quartz chip, wherein the sealed shell is arranged on the sealed shell; the bottom of the sealing shell is fixedly provided with a base, the inner wall of the sealing shell is fixedly provided with an electromagnetic shielding layer, the outer wall of the sealing shell is provided with a buffering anti-corrosion structure, the corrugated pipe is arranged at the top of the sealing shell, the bottom of the corrugated pipe stretches into the sealing shell, the supporting structure is arranged on the base and is positioned in the sealing shell, the chip clamp is arranged on the supporting structure and is connected with two electrode columns, the two electrode columns stretch out to the lower part of the base, the quartz chip is arranged on the chip clamp, and the bottom of the corrugated pipe is in contact with the surface of the quartz chip. The utility model can realize the real-time monitoring of the underground pressure, effectively block the underground electromagnetic noise, improve the environmental adaptability and the working stability of the sensor and improve the accuracy of pressure monitoring.

Inventors

SHEN YAHONG
XIONG SHUQIU
ZHU JIAJIA
WANG MEITING
XIAO YUANJIN
LIU YANG
JI XIAOJIAN
FU BOYANG

Assignees

江西工程学院

Dates

Publication Date: 20260508
Application Date: 20250627

Claims (7)

1. A downhole quartz resonant pressure sensor, comprising: The anti-corrosion device comprises a sealing shell (1), wherein a base (2) is fixedly arranged at the bottom of the sealing shell (1), an electromagnetic shielding layer (3) is fixedly arranged on the inner wall of the sealing shell (1), and a buffering anti-corrosion structure is arranged on the outer wall of the sealing shell (1); The corrugated pipe (4) is arranged at the top of the sealed shell (1), and the bottom of the corrugated pipe (4) stretches into the sealed shell (1); -a support structure mounted on the base (2) and located within the sealed enclosure (1); The chip clamp is arranged on the supporting structure and is connected with two electrode columns which extend out to the lower part of the base (2); The bottom of the corrugated pipe (4) is in contact with the surface of the quartz chip (5), and two sides of the quartz chip (5) are respectively connected with the two electrode columns; Wherein a sealing structure is arranged between the corrugated pipe (4) and the sealing shell (1).
2. A downhole quartz resonance type pressure sensor according to claim 1, wherein a through hole (6) is penetrated and installed at the center of the top of the sealing shell (1), the bottom of the corrugated pipe (4) penetrates through the through hole (6), the sealing structure comprises a first fluororubber O-shaped sealing ring (7), the first fluororubber O-shaped sealing ring (7) is fixedly installed on the inner wall of the through hole (6), and the inner wall of the through hole (6) and the outer wall of the corrugated pipe (4) are in butt joint with the first fluororubber O-shaped sealing ring (7).
3. A downhole quartz resonance type pressure sensor according to claim 1, wherein the buffering and corrosion-preventing structure comprises a buffering layer (8) and a corrosion-preventing coating (9), the buffering layer (8) is fixedly sleeved on the outer wall of the sealed shell (1), and the corrosion-preventing coating (9) is arranged on the outer wall of the buffering layer (8).
4. A downhole quartz resonance type pressure sensor according to claim 1, wherein the chip clamp comprises two symmetrically arranged clamp connecting rods (10), clamp heads (11) are arranged on opposite end surfaces of the two clamp connecting rods (10), the quartz chip (5) is detachably connected between the two clamp heads (11), and the two electrode columns are respectively connected with the two clamp connecting rods (10).
5. The downhole quartz resonance type pressure sensor according to claim 4, wherein the supporting structure comprises a positioning column (12), a central groove (13) is formed in the center of the positioning column (12) in a penetrating manner, two mounting grooves (14) are formed in the top surface of the positioning column (12), and two clamp connecting rods (10) are respectively mounted in the two mounting grooves (14); Two vertical grooves (15) are formed in the bottom surface of the positioning column (12) in parallel, the two vertical grooves (15) are respectively communicated with the two mounting grooves (14), two electrode columns are mounted in the two vertical grooves (15), and a plurality of second fluororubber O-shaped sealing rings (16) which are distributed at intervals are mounted between the electrode columns and the vertical grooves (15).
6. A downhole quartz resonance type pressure sensor according to claim 5, wherein the base (2) is provided with two through grooves (17), bottoms of the two electrode columns extend out to the lower side of the base (2) through the through grooves (17), and the inner diameter of the through grooves (17) is smaller than that of the vertical grooves (15).
7. A downhole quartz resonator pressure sensor according to claim 1, characterized in that the quartz chip (5) is an AT cut quartz chip.

Description

Underground quartz resonance type pressure sensor Technical Field The utility model relates to the technical field of pressure sensors, in particular to an underground quartz resonance type pressure sensor. Background In the exploitation process of petroleum, natural gas and other resources, the real-time monitoring of the underground pressure is important to ensure the safe production and optimize the exploitation efficiency. Conventional downhole pressure sensors face a number of challenges in complex downhole environments. On one hand, strong electromagnetic interference exists underground, signal transmission of a common sensor is easily influenced by electromagnetic noise, signal distortion is caused, monitoring data is inaccurate, on the other hand, underground environment is severe, corrosive mediums such as corrosive gas and liquid in an acid gas field can exist frequently in vibration, the structure of the sensor can be damaged, the service life of the sensor is shortened, and the reliability and stability of monitoring are reduced. For this purpose, a downhole quartz resonant pressure sensor is proposed. Disclosure of utility model The utility model aims to provide a downhole quartz resonance type pressure sensor, which aims to solve or improve at least one of the technical problems. In order to achieve the purpose, the utility model provides a scheme that the underground quartz resonance type pressure sensor comprises: The electromagnetic shielding layer is fixedly arranged on the inner wall of the sealing shell, and the outer wall of the sealing shell is provided with a buffering anti-corrosion structure; The corrugated pipe is arranged at the top of the sealed shell, and the bottom of the corrugated pipe stretches into the sealed shell; A support structure mounted on the base and located within the sealed enclosure; the chip clamp is arranged on the supporting structure and is connected with two electrode columns which extend out to the lower part of the base; the bottom of the corrugated pipe is contacted with the surface of the quartz chip, and two sides of the quartz chip are respectively connected with the two electrode columns; And a sealing structure is arranged between the corrugated pipe and the sealing shell. According to the underground quartz resonance type pressure sensor provided by the utility model, the through hole is arranged at the center of the top of the sealing shell in a penetrating manner, the bottom of the corrugated pipe penetrates through the through hole, the sealing structure comprises the first fluororubber O-shaped sealing ring, the first fluororubber O-shaped sealing ring is fixedly arranged on the inner wall of the through hole, and the inner wall of the through hole and the outer wall of the corrugated pipe are both abutted with the first fluororubber O-shaped sealing ring. According to the underground quartz resonance type pressure sensor provided by the utility model, the buffering anti-corrosion structure comprises the buffering layer and the anti-corrosion coating, the buffering layer is fixedly sleeved on the outer wall of the sealing shell, and the anti-corrosion coating is arranged on the outer wall of the buffering layer. According to the underground quartz resonance type pressure sensor provided by the utility model, the chip clamp comprises two symmetrically arranged clamp connecting rods, clamp heads are arranged on the opposite end surfaces of the two clamp connecting rods, the quartz chip is detachably connected between the two clamp heads, and the two electrode columns are respectively connected with the two clamp connecting rods. According to the underground quartz resonance type pressure sensor provided by the utility model, the supporting structure comprises the positioning column, the center of the positioning column is provided with the central groove in a penetrating way, the top surface of the positioning column is provided with the two mounting grooves, and the two clamp connecting rods are respectively arranged in the two mounting grooves; Two vertical grooves are formed in the bottom surface of the positioning column and are communicated with the two mounting grooves respectively, two electrode columns are mounted in the two vertical grooves, and a plurality of second fluororubber O-shaped sealing rings which are distributed at intervals are mounted between the electrode columns and the vertical grooves. According to the underground quartz resonance type pressure sensor provided by the utility model, the base is provided with the two through grooves, the bottoms of the two electrode columns extend out to the lower part of the base through the through grooves, and the inner diameter of the through grooves is smaller than that of the vertical grooves. According to the underground quartz resonance type pressure sensor provided by the utility model, the quartz chip adopts the AT cut type quartz chip. The utility model discloses the following