Ultrasonic flow sensor and temperature measuring method using the same
First Claim
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1. An ultrasonic flow sensor comprising:
- a first ultrasonic device which performs at least one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping;
a second ultrasonic device which performs at least the other one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; and
a calculation part configured to calculate a flow rate of the fluid in the piping based on output signals from the first ultrasonic device and the second ultrasonic device, and further comprising;
a sensor portion including at least one of the first ultrasonic device and the second ultrasonic device integrated therein, and includes a solid-state acoustic coupling member capable of elastic deformation and configured to come into contact with the piping; and
a fixing member configured to position and fix the sensor portion with respect to the piping,wherein the sensor portion includes;
a heat transfer member having a heat detecting surface configured to come into contact with an outer peripheral surface of the piping when the sensor portion is fixed to the piping by the fixing member and detect heat of the piping;
a temperature detecting device configured to detect a temperature of heat transferred in the heat transfer member via the heat detecting surface; and
a temperature measuring part configured to measure the temperature of the heat detecting surface based on a detection signal from the temperature detecting device, andwherein the heat transfer member restricts an amount of collapse of the acoustic coupling member in a radial direction of the piping when the sensor portion is fixed to the piping by the fixing member.
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Abstract
To add a function of detecting a temperature to an ultrasonic flow sensor without making the structure of the ultrasonic flow sensor complicated. A sensor portion of the ultrasonic flow sensor includes an acoustic coupling member. The sensor portion includes a heat transfer member having a heat detecting surface for detecting heat of piping. The temperature of heat transferred in the heat transfer member via the heat detecting surface is detected by a temperature detecting device. The heat transfer member restricts an amount of collapse of the acoustic coupling member in a radial direction of the piping when the sensor portion is fixed to the piping.
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Citations
12 Claims
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1. An ultrasonic flow sensor comprising:
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a first ultrasonic device which performs at least one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; a second ultrasonic device which performs at least the other one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; and a calculation part configured to calculate a flow rate of the fluid in the piping based on output signals from the first ultrasonic device and the second ultrasonic device, and further comprising; a sensor portion including at least one of the first ultrasonic device and the second ultrasonic device integrated therein, and includes a solid-state acoustic coupling member capable of elastic deformation and configured to come into contact with the piping; and a fixing member configured to position and fix the sensor portion with respect to the piping, wherein the sensor portion includes; a heat transfer member having a heat detecting surface configured to come into contact with an outer peripheral surface of the piping when the sensor portion is fixed to the piping by the fixing member and detect heat of the piping; a temperature detecting device configured to detect a temperature of heat transferred in the heat transfer member via the heat detecting surface; and a temperature measuring part configured to measure the temperature of the heat detecting surface based on a detection signal from the temperature detecting device, and wherein the heat transfer member restricts an amount of collapse of the acoustic coupling member in a radial direction of the piping when the sensor portion is fixed to the piping by the fixing member. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12)
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4. An ultrasonic flow sensor comprising:
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a first ultrasonic device which performs at least one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; a second ultrasonic device which performs at least the other one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; and a calculation part configured to calculate a flow rate of the fluid in the piping based on output signals from the first ultrasonic device and the second ultrasonic device, and further comprising; a sensor portion including at least one of the first ultrasonic device and the second ultrasonic device integrated therein and opposing the piping via an acoustic coupling member; and
a fixing member configured to position and fix the sensor portion with respect to the piping,wherein the sensor portion includes;
a heat transfer member having a heat detecting surface configured to come into contact with an outer peripheral surface of the piping when the sensor portion is fixed to the piping by the fixing member and detect heat of the piping;
a temperature detecting device configured to detect a temperature of heat transferred in the heat transfer member via the heat detecting surface; and
a temperature measuring part configured to measure the temperature of the heat detecting surface based on a detection signal from the temperature detecting device, andthe heat transfer member positions a sensor surface of the sensor portion in a radial direction of the piping when the sensor portion is fixed to the piping by the fixing member. - View Dependent Claims (5)
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Specification