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Sealing sampler provided with dissolved oxygen probe

A technology of dissolved oxygen probe and sampler, which is applied in the direction of sampling device, etc., can solve the problems of waste of sampling water and influence of dissolved oxygen index, etc., to prevent secondary pollution, avoid deviation of test data, and facilitate assembly and disassembly Effect

Active Publication Date: 2013-04-24
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the water tank is open, it will come into contact with the air, which will affect the dissolved oxygen index; at the same time, after the pressure is lost, the tested sampled water can only be wasted and drained

Method used

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  • Sealing sampler provided with dissolved oxygen probe

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Embodiment Construction

[0019] Such as figure 1 As shown, it is a schematic diagram of a half-section structure of a sealed sampler equipped with a dissolved oxygen probe in the present invention. The sealed sampler equipped with a dissolved oxygen probe includes a cavity with a water inlet 8 and a water outlet 9 and a dissolved oxygen gas fixed in the cavity. Probe 3 (using the Hach LDO dissolved oxygen probe), the cavity can also be an integrally formed closed cavity. Considering factors such as installation and maintenance, the cavity adopts a cylindrical upper cavity 1 and a cylindrical The combined cavity composed of the lower cavity 2, the material of the upper cavity 1 and the lower cavity 2 can be acrylonitrile-styrene-butadiene copolymer (ABS) resin material, the upper cavity 1 and the lower cavity 2. It has an open end connected to each other. The connection between the upper chamber 1 and the lower chamber 2 should adopt a liquid-tight fit to ensure no water leakage and no loss of pressure...

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Abstract

The invention discloses a sealing sampler provided with a dissolved oxygen probe. The sampler comprises a cavity which is provided with a water inlet and a water outlet and is used for sealing and bearing pressure and the dissolved oxygen probe which is fixed in the cavity, wherein a gap is reserved between the dissolved oxygen probe and the inner wall of the cavity; a cable of the dissolved oxygen probe runs through the top of the cavity; the water inlet is positioned on the bottom of the cavity; and the water outlet is positioned on the top of the cavity. Through the closed design, water which is detected by using dissolving oxygen is not decompressed and can be directly conveyed back to a pipe network; meanwhile, the contact between the sample water and the air is also avoided, so thattest results are more accurate.

Description

technical field [0001] The invention relates to the field of sampling equipment for on-line monitoring of water quality index dissolved oxygen in water supply pipelines, in particular to a sealed sampler equipped with a dissolved oxygen probe. Background technique [0002] Dissolved oxygen refers to molecular oxygen dissolved in water or solution, which is an indispensable condition for the survival of aquatic animals and aquatic plants. The dissolved oxygen in natural water is close to the saturation value. When the dissolved oxygen concentration is less than 3mg / L, the survival of fish will be affected. The reduction of dissolved oxygen in rivers, rivers and lakes is the main reason for the deterioration of water quality. The concentration of dissolved oxygen reflects the degree of water pollution, especially organic pollution. The determination of dissolved oxygen concentration is used in industry, medicine, environmental monitoring and aquaculture. It is one of the impo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/20
Inventor 毛欣炜周永潮张燕方涛陈锋
Owner ZHEJIANG UNIV
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