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Siphon pressure gage

A technology of pressure gauges and siphon tubes, applied in the direction of measuring fluid pressure, elastic deformation gauge fluid pressure measurement, measuring devices, etc., can solve the problems of reducing the accuracy and service life of pressure gauges, and achieve the effect of preventing pressure shocks

Active Publication Date: 2015-01-14
郑州椿长仪器仪表有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the steam is passed again, the pressure shock force generated by the water hammer will impact the pressure gauge, thereby destroying the spring tube, thus greatly reducing the accuracy and service life of the pressure gauge

Method used

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  • Siphon pressure gage
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  • Siphon pressure gage

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] Such as image 3 , Figure 4 As shown, a siphon pressure gauge includes a copper seat 1 and a spring tube 2 connected to the copper seat 1, an air chamber 4 is arranged in the copper seat 1, and a damping plug 5 is arranged at the air inlet end of the air chamber 4, and the damping plug A damping hole 6 is arranged obliquely on 5; a necking section 7 is set at the gas outlet end of the air chamber 4, and the outlet of the necking section 7 is connected to a capillary 8, and the other end of the capillary 8 is connected to the copper seat 1.

[0016] The diameter of the above-mentioned damping hole 6 is 0.6-1mm, which can be any value in 0.6mm, 0.7mm, 0.8mm, 1mm; the diameter of the capillary 8 is 0.2-0.5mm, which can be 0.2mm, 0.3mm, 0.4mm , any value in 0.5mm. When the diameter of the orifice 6 is 0.8 mm, the diameter of the capillary 8 is 0.4 mm, which is the best implementation.

[0017] The above-mentioned inclination angle of the damping hole 6 is 100-135°, that...

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Abstract

A siphon pressure gage comprises a copper seat and a bourdon tube connected with the copper seat. A gas chamber is formed in the copper seat, a damping plug is arranged at the gas inlet end of the gas chamber, and a damping hole is obliquely formed in the damping plug. A necking section is arranged at the gas outlet end of the gas chamber, an outlet of the necking section is connected with a capillary tube, and the other end of the capillary tube is connected to the copper seat. According to the technical scheme, the instant pressure impact of a water hammer due to steam cooling can be effectively prevented through the siphon action of the damping hole and the capillary tube at the two ends of the gas chamber. After improvement, the non-return-to-zero defect ratio of pressure is reduced to zero from the original 30%.

Description

technical field [0001] The invention relates to a pressure gauge, in particular to a siphon pressure gauge for preventing water hammer. Background technique [0002] Such as figure 1 , figure 2 As shown, a common pressure gauge includes a copper seat 1 and a spring tube 2 connected to the copper seat 1, and an air channel 3 is provided inside the copper seat 1, and the air channel 3 is equal in diameter. [0003] Therefore, when the pressure gauge is in use, due to the influence of the site environment, water vapor will enter the air channel 3, and excessive water vapor will produce water hammer after cooling. When the steam is passed again, the pressure shock force generated by the water hammer will impact the pressure gauge, thereby destroying the spring tube, thereby greatly reducing the accuracy and service life of the pressure gauge. Contents of the invention [0004] The object of the present invention is to provide a siphon pressure gauge which prevents water ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/02G01L19/06
Inventor 王宏孙嵘
Owner 郑州椿长仪器仪表有限公司