Large pressure difference U-shaped differential pressure gauge and using method thereof
A technology of large pressure difference and differential pressure gauge, which is applied in the field of large pressure difference U-shaped differential pressure gauge, can solve problems such as the inability to solve the problem of large pressure difference measurement, and achieve the effect of simple structure, simple structure and guaranteed accuracy
Inactive Publication Date: 2013-05-08
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology
When the pressure difference reaches the MPa level, the traditional U-shaped tube manometer is no longer applicable, so only mechanical or electrical differential manometers with more complex structures can be used.
Patent 88200206 proposes a high-pressure air water column differential pressure gauge. When measuring high pressure, the top pressure is applied to the low-pressure side through the valve, so that the water surface is displayed within the range of the reading scale. However, this method still cannot solve the problem of large pressure difference measurement between two points
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Embodiment 1
[0017] Embodiment 1, figure 1 A U-shaped differential pressure gauge with a large pressure difference and its use method are given, including a reading ruler 3, a left pressure measuring tube 4, a reverse osmosis chamber 5, a reverse osmosis membrane 6, a right pressure measuring tube 7, a left adjusting valve 2, a right Adjust valve 8, left pressure measuring tube interface 1, right pressure measuring tube interface 9, rear baffle 10 and side baffle 11.
[0018] One side of the left pressure measuring tube 4 described above is provided with a reading scale 3, and the left pressure measuring tube interface 1 is fixed on the upper end of the left pressure measuring tube 4, and the left adjusting valve 2 is set on the left pressure measuring tube interface 1; The upper end of the pressure tube 7 is fixed to the right pressure measuring tube interface 9, and the right adjusting valve 8 is set on the right pressure measuring tube interface 9. The lower end of the left pressure me...
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The invention discloses a large pressure difference U-shaped differential pressure gauge. The large pressure difference U-shaped differential pressure gauge comprises a left pressure testing tube (4) and a right pressure testing tube (7), wherein a left pressure testing tube connection mouth (1) is arranged at the upper end of the left pressure testing tube (4) and is provided with a left regulating valve (2). A right pressure testing tube connection mouth (9) is arranged at the upper end of the right pressure testing tube (7) and is provided with a right regulating valve (8). The lower end of the left pressure testing tube (4) and the lower end of the right pressure testing tube (7) are connected with each other through a reverse osmosis cavity (5), and a reverse osmosis film (6) is arranged inside the reverse osmosis cavity (5).
Description
technical field [0001] The invention belongs to the field of pressure instruments, in particular to a U-shaped differential pressure gauge with a large pressure difference and a use method thereof. Background technique [0002] The U-shaped tube differential pressure gauge is the simplest type of differential pressure measuring instrument. It is one of the equipment that uses liquid pressure balance to measure. It has the advantages of simple structure and easy manufacture, and is widely used; U-shaped tube differential pressure gauge is used in When using the liquid column height difference in the tube to balance the pressure difference of the pressure vessel or pipeline connected to the two ends of the U-shaped tube, and read directly according to the scale displayed by the liquid column height difference. Usually the working medium in the tube is water or mercury, and the upper limit of the measuring range is generally below 300mm, so the differential pressure measurement...
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Login to View More IPC IPC(8): G01L13/04G01L7/18
Inventor 王厉骆菁菁
Owner ZHEJIANG SCI-TECH UNIV