SU75741A1 - Device for sampling an average gas sample from a gas pipeline - Google Patents

Description

The present invention relates to a device for taking an average sample of gas from a gas pipeline with a throttle washer placed in it, which creates a pressure differential and ensures the flow of gas into a hermetically sealed sampler in an amount proportional to the flow rate.

FIG. 1 is a schematic diagram of the proposed device for sampling an average sample of a short circuit gas from a gas pipelines, and FIG. 2 device in section.

The device consists of a sampler 1 and a surge vessel 2, connected together by a flexible hose 3.

Gas pipelines 4 and 5 connect the sampling pipes / with the gas pipeline 6, from which a gas sample is taken, and tube 7 - a surge vessel 2 with a gas pipeline 4 - Moreover, gas pipeline 4 is connected to gas pipeline 6 before entering the gas in the washer 5, and gas pipeline 5 - after the gas outlet from the plate 8.

Inside the sampler 1, filled with liquid, a float 9 is placed, the internal through-field of which corresponds to the shape of the vessel 10 inserted into it (for example,

28 Code Release 7,

a laboratory bottle serving to hold a gas sample).

The weight of the vessel 10 is perceived by the float. 9, which eliminates the effect of this weight on the pressure inside the vessel. Thus, lowered together with the float in the liquid will be in equilibrium, I will not act with my weight on the gas enclosed by BHj-three vessels 10.

The vessel 10 has a nrobka in which a tube 11 with a calibrated orifice for liquid-by-pass liquid is inserted, and a tube 12 for the passage of gas. Tubes II and 12 are provided with stopcocks M and / 5.

Through the pipe 18 installed on the sampling box 1, and the flexible hose 13, the tube 12 is connected to the gas pipeline 4.

In order to take an average sample of gas, the sampler / is completely filled with liquid, while part of the liquid is passed through taps 16 and 17 into equalizing vessel 2, intended to displace gas from the sampler / after removing the gas sample vessel 10 from it and before installing the same next vessel .

Then, closing the faucets 16 and 17, take the float 9 with the vessel 10 inserted into it, completely filled

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liquid, and, opening the taps 4 and / 5, lower the float 9 and the vessel 10 into the sampler 1, then put the airtight lid on the sampler 1, open the edge of the gas pipelines and 5, and thus turn on the ycTpoilcTBO.

The process of sampling the average gas sample into the vessel 10 by means of the washer 8, which creates a pressure differential, ensures the gas flow to the gas sampling device in a quantity proportional to its flow rate in the gas pipeline 6. This is as follows.

When gas moves through the washer 8 in the pipeline 6, pressures P and PZ are set up in front of and behind the washer, transmitted through pipelines 4 and 5 respectively into the vessel 10 and the sampler /.

Since the pressure PI is greater than the pressure PZ, the gas will fill the vessel 10, displaced its air into the sampler 1 through the tip of the tube 1 After filling the gases of the vessel 10, i.e. after the end of the sampling, raise the surge vessel 2 above the sampler / and, opening the tap 16 and the tap installed on the tube 7, pour the liquid

from the vessel 2 to the sampler 1, displaced gas from the latter back into the pipeline 6. After that, open the lid and remove the vessel 2, filled with an average sample of gas.

Subject invention

Claims (2)

1. A device for sampling an average gas sample from a gas pipeline with a throttle washer placed at a time, which creates a pressure differential and ensures the flow of gas into the hermetically sealed sampler in an amount proportional to the flow rate, different in that1 in order to eliminate the effect of the vessel weight to accommodate the gas sample, the pressure inside this vessel, the latter is installed on a float having an internal through cavity corresponding to the shape of the vessel and freely floating in the liquid filling the sampling to. 2. Application of a liquid-filled leveling vessel in the device of claim 1, which is hermetically connected to the sampler by a flexible hose and intended to displace gas from the sampler when the gas sample vessel is removed from it and the new one is installed. FIG. 1 Direction dbiheni gazi FIG. 2 K npVibHbsu cranes