The invention discloses a pressure-type heat meter. The inventions aims to provide a heat meter simple in structure, easy in manufacturing techniques, low in cost, high in precision, uneasy to clog, and small in maintenance amount. The heat meter comprises a calculator, an incoming water temperature sensor, an outgoing water temperature sensor, and a flow sensor. The incoming water temperature sensor and the outgoing water temperature sensor are connected to an incoming water temperature sensor input terminal and an outgoing water temperature sensor input terminal of the calculator respectively. The flow sensor comprises a throttling means, an upstream pressure sensor and a downstream pressure sensor. The upstream pressure sensor is directly installed on an upstream pipe wall pressure measuring port of the throttling means, and the downstream pressure sensor is directly installed on a downstream pipe wall pressure measuring port of the throttling means. Electrical signal output terminals of the upstream pressure sensor and the downstream pressure sensor are connected to an upstream pressure sensor input terminal and a downstream pressure sensor input terminal of the calculator respectively.

Pressure-type heat meter

The invention relates to a device for measuring the motion range of an automobile power assembly relatively to an automobile body engine chamber. The device for measuring envelope of the automobile power assembly comprises ranging sensors which are mounted in the automobile engine chamber, and are used for measuring displacement data of the automobile power assembly. By measuring the displacement data of the automobile power assembly under different motion states of the automobile, enveloping surfaces of the automobile power assembly are acquired, so as to determine dynamic clearances between the automobile power assembly and surrounded components; reasonable references are provided for automobile manufacturers to layout design of engine chambers.

Device for measuring envelope of automobile power assembly

The utility model relates to a rotary wing type flow sensor, which is characterized in that the utility model is composed of a flow sensor upper cover connected with a casing of the flow sensor and a demountable flow sensor meter core, wherein the demountable flow sensor meter core comprises an impeller, an impeller cover, an impeller casing and a jewel bearing assembly, and the demountable flow sensor meter core is demountably connected with the upper cover of the flow sensor; the flow sensor meter core, the upper cover of the flow sensor and the casing of the flow sensor are hermetically connected by sealing rings respectively to form a dual seal structure, and the sealing rings are packaged at the water outlet of the demountable flow sensor meter core. The utility model has the advantages that the metering accuracy of a calorimeter is stable and reliable, the utility model can resist the high pressure of less than or equal to 3.5MPa and the high temperature of 95DEG C, the measuring accuracy is high, and reach the precision index of the secondary meter of the calorimeter of the national standard (CJ128-2000), and the utility model can work reliably and stably under the environment of high temperature and high pressure.

Rotary wing type flow sensor

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Rotary wing type flow sensor