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Low temperature resistant capsule pressure gauge

A pressure gauge and low-temperature-resistant technology, which is applied to the measurement of fluid pressure, elastic deformation gauge type fluid pressure measurement, and measuring devices. It can solve problems such as inaccurate measurement and reduced elasticity of the diaphragm box, and achieve accurate measurement results.

Inactive Publication Date: 2019-02-01
JIANGSU HUAERWEI TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the temperature drops to 0 degrees Celsius and below, the elasticity of the bellows will decrease, resulting in inaccurate measurement

Method used

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  • Low temperature resistant capsule pressure gauge

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Embodiment Construction

[0011] figure 1 Medium and low temperature resistant diaphragm pressure gauge, of which 1. Pressure gauge body, 2. Heating resistance wire, 3. Meter base, 4. Power cord, 5. Connection plate, 6. Spring, 7. Stainless steel tube, 8. Water, 9 .Piston, 11. Insulating rod, 12. Insulating sealing ring, 13. Insulating gasket. It also includes a temperature control switch, the lower part of the pressure gauge body is provided with a meter seat, the meter seat is provided with a membrane box, and the meter seat is also provided with a heating resistance wire, and the power cord of the heating resistance wire is connected from the meter seat. The outer layer of the temperature control switch is a stainless steel tube with closed ends. The stainless steel tube is connected to the watch base by a welding connection plate. One end of the spring is fixed at the upper end of the stainless steel tube, and the other end of the spring is provided with a piston. , the section of the stainless st...

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Abstract

The invention discloses a low temperature resistant capsule pressure gauge, comprising a pressure gauge body and a thermostat switch. The lower part of the pressure gauge body is provided with a base.The capsule and a heating resistance wire are disposed in the base. A power cord of the heating resistance wire sticks out from the base. The outer layer of the thermostat switch is a stainless steeltube closed at both ends. The stainless steel tube is connected with the base through a welded connecting plate. According to the low temperature resistant capsule pressure gauge, the heating of theheating resistance wire can be automatically controlled when the temperature is below 0 DEG C, thereby ensuring that the elasticity of the capsule is optimal and a measurement result is accurate.

Description

technical field [0001] The invention belongs to the field of instruments and meters, in particular to a pressure gauge that can automatically heat at low temperature to ensure the elasticity of a diaphragm box. Background technique [0002] The bellows pressure gauge is a pressure gauge that uses the bellows as a sensitive element for measuring tiny pressure. It is used to measure the micro-pressure and negative pressure of the gas which is corrosive to copper alloy and has no explosion hazard. It is widely used in boiler ventilation, gas pipeline, combustion device and other similar equipment. However, when the temperature drops to 0 degrees Celsius and below, the elasticity of the diaphragm box will decrease, resulting in inaccurate metering. SUMMARY OF THE INVENTION [0003] In order to overcome the problem of inaccurate measurement of the bellows pressure gauge at low temperature, the present invention provides a low temperature resistant bellows pressure gauge, which...

Claims

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Application Information

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IPC IPC(8): G01L7/10G01L19/04
CPCG01L7/10G01L19/04
Inventor 陈雪中陈光远
Owner JIANGSU HUAERWEI TECH GRP