Temperature compensating quartz crystal pressure sensor
A technology of pressure sensor and quartz crystal, applied in the direction of measuring fluid pressure, measuring fluid pressure through mechanical components, instruments, etc., can solve the problem that the quartz crystal pressure sensor does not have temperature compensation, etc., to eliminate the influence of temperature on the pressure sensor, production Simple structure and low manufacturing cost
Active Publication Date: 2018-12-11
JIANGXI TIANYUE AUTOMOBILE PARTS
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Problems solved by technology
Realized that the quartz crystal pressure sensor itself does not have the temperature compensation function
Method used
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[0024] The technical solutions in the present invention will be further described in detail below in conjunction with specific embodiments.
[0025] A temperature-compensated quartz crystal pressure sensor disclosed in the present invention includes a sensor, a temperature and pressure sensing element, the temperature and pressure sensing element includes a temperature sensing element and a pressure sensing element, and the temperature sensing element and the pressure sensing element are arranged on the sensor In the same cavity; the temperature sensing element is a reference crystal, and the pressure sensing element is a pressure sensing crystal.
[0026] Specifically, the sensor of the present invention includes a sensor upper body, a sensor middle body, and a sensor lower body that can be connected to each other. One end of the lower body of the sensor is connected, and the inner cavity at the end of the joint constitutes the lower sensing cavity; the upper sensing cavity c...
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The invention discloses a temperature compensating quartz crystal pressure sensor. The temperature compensating quartz crystal pressure sensor includes a sensor and a temperature and pressure sensingcomponent, wherein the sensor comprises mutually connected sensor upper body, sensor middle body and sensor lower body; an inner cavity at the end portion of a joint between the sensor upper body andone end of the sensor middle body forms a sensing upper cavity; the other end of the sensor middle body is connected with one end of the sensor lower body, and an inner cavity at the end portion of the joint between the other end of the sensor middle body and one end of the sensor lower body forms a sensing lower cavity; and the sensing upper cavity is communicated with the sensing lower cavity. Through the above device structure, the temperature compensating quartz crystal pressure sensor realizes that a reference crystal can perform real-time temperature compensation on the pressure sensor,thus eliminating the influence of the temperature the temperature stabilization period on the pressure sensor during to enable the pressure sensor to be a true quartz crystal pressure sensor with temperature compensation. Besides, the temperature compensating quartz crystal pressure sensor has the advantages of simple production structure and low manufacturing cost.
Description
Technical field: [0001] The invention relates to a pressure sensor used in the oil exploitation industry, in particular to a temperature-compensated quartz crystal pressure sensor used in the downhole of an oil well. Background technique: [0002] Sensors are important components in industrial control systems, and quartz crystal pressure sensors are an all-in-one sensor. In the process of oil extraction, it is required to have a more accurate record and description of the pressure fluctuation in the process of oil reservoir extraction, and the quartz crystal pressure sensor can meet the above requirements. Oscillation occurs when a quartz crystal is connected to the appropriate electronic circuitry. The frequency of this oscillation is quite stable. When the crystal is stressed, the oscillation frequency will change accordingly. The sensor of the quartz crystal pressure gauge is made according to this principle. The pressure sensing crystal, that is, the pressure sensing c...
Claims
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Login to View More IPC IPC(8): G01L7/00G01L19/04G01L19/14
CPCG01L7/024G01L19/04G01L19/142
Inventor 陈敏胡文宇
Owner JIANGXI TIANYUE AUTOMOBILE PARTS