JPS6244357Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drain separator that is used in a sample gas flow path in a gas analyzer.

For example, when analyzing flue gas or other combustion exhaust gas, in order to prevent corrosion of the analyzer or other malfunctions, the gas inlet 1, gas outlet 2, and drain as shown in Figure 1 must be Outlet 3, filter 4
A drain separator 5 equipped with the like is often used.

This drain separator 5 is generally used for the flow shown in FIG. It is used to monitor pressure loss due to clogging and the suction capacity of the sampling pump 9.

In many cases, the response delay of instruments due to the space from drain outlet 3 to liquid level A can be ignored, but in cases where high-speed sampling is required, such as with measuring instruments for boiler control, it is necessary to replace the gas in the space. A certain amount of time is required, and some buffering effect occurs due to the space, which may cause problems such as delayed response of instruments and a decrease in control ability due to this.

Furthermore, if the change in the liquid level of the drain is not used to monitor the pressure loss of the primary filter 8 or the suction capacity of the sampling pump 9, in order to automatically discharge the drain, as shown in FIG.
A solenoid valve V is provided in the drain separator 5, and the solenoid valve V is
A complicated and expensive configuration was required to operate the opening and closing operations.

The present invention attempts to solve these problems.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 4 shows an example of the drain separator 5 according to the present invention, where 1 is a gas inlet, 2 is a gas outlet, 3 is a drain outlet, and 4 is a filter. Inside the drain separator 5, there is a tube-shaped weir plate 12 that forms a drain accumulation part 11, and a space B whose lower edge is submerged in the accumulation part 11, and a space B on the gas inlet 1 and gas outlet 2 sides, and a space B on the drain outlet 3 side. A partition plate 13 that divides the space C into
The drain outlet 3 is configured to be water-sealed with the drain in the stagnation part 11.

That is, the sample gas flowing into the drain separator 5 from the gas inlet 1 is separated into gas and liquid in the space B, the drain is stored by the weir plate 12, and the gas flows out from the gas outlet 2 to the next step. When the liquid level in the reservoir 11 rises above a certain level, the weir plate 12
Since the drain overflows and is discharged from the drain outlet 3, a substantially constant amount of drain always exists in the accumulation part 11, and the space B and the space C are separated by the drain.

Therefore, when this drain separator 5 is used in the flow shown in FIG. 2, the gas in the space C becomes irrelevant to the replacement of the gas in the drain separator 5, and the response delay caused by the space in the conduit 7 can be eliminated.

Moreover, when the pressure loss of the primary filter 8 increases,
The pressure in space B decreases, and the gas in space C raises the liquid level in the pool 11 toward space B, forming bubbles and entering space B. As the pressure in space C decreases, the liquid level A in conduit 7 increases. It will rise.

Conversely, when the pressure in the space B increases due to a decrease in the suction capacity of the sampling pump 9, etc., the operation is opposite to that described above, and the liquid level A in the conduit 7 is lowered.

Therefore, the pressure drop of the primary filter 8 and the function as a monitor of the suction capacity of the sampling pump 9 are not impaired.

Furthermore, when the liquid level in the pool 11 rises above a certain level, it overflows the weir plate 12 and
Since a substantially constant amount of condensate is always present in 1, when not used as the above-mentioned monitor, it is possible to omit the electromagnetic valve and liquid level detector required for automatically discharging condensate.

FIG. 5 shows another embodiment, which is characterized in that the weir plate 12 is formed into a dish shape, and the partition plate 13 is formed into an annular shape with a central hole bent downward.

As is clear from these examples, the weir plate 1
2 and the partition plate 13 can be implemented in various shapes, and are not limited to the illustrated shapes.

The drain separator according to the present invention has the above-mentioned configuration, and when used in a flow where changes in the liquid level of the drain are used to monitor the pressure drop of the primary filter or the suction capacity of the sampling pump, there is a delay in response due to the space inside the conduit. In addition, when not used as a monitor, the solenoid valve and liquid level detector that were conventionally required to automatically discharge condensate can be omitted, simplifying the configuration and reducing costs. It is.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an example of a conventional drain separator, FIG. 2 is a configuration diagram showing how the drain separator is used, FIG. 3 is a vertical cross-sectional view showing another example of a conventional drain separator, and FIG. The figure is a longitudinal sectional view of a drain separator showing an embodiment of the present invention, and FIG. 5 is a longitudinal sectional view of a drain separator showing another embodiment. 1... Gas inlet, 2... Gas outlet, 3... Drain outlet, 5... Drain separator, 11... Accumulation part, 12... Weir plate, 13... Partition plate, B,
C...Space.

Claims (1)

[Scope of utility model registration request] The drain separator is provided with a weir plate that forms a drain accumulation portion, and a partition plate whose lower edge is submerged in the accumulation portion and divides the space into a space on the gas inlet and gas outlet side and a space on the drain outlet side. . A drain separator, characterized in that the drain outlet is configured to be sealed with the drain in the pooled portion.