JP2587828Y2 - Heating piping mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating pipe mechanism for supplying a sample gas such as flue gas to an analyzer using a heating pipe.

[0002]

_2. Description of the Related Art When analyzing a high-temperature sample gas such as a flue gas using an analyzer such as an SO ₂ or NO _x meter, a heating pipe is used to measure a component that causes a loss in the drain. doing.

[0003]

In this case, the sample gas is cooled down to the outside air temperature at a pipe exposed portion provided in the outside air atmosphere between the heating pipe and the analyzer, and the water in the sample gas is drained. However, the length of the exposed portion is often short, and in summer when the temperature is high, insufficient cooling causes insufficient water in the sample gas to be drained in the analyzer. Become.
Therefore, an indication error or the like occurs due to the dissolution of SO ₂ and NO ₂ and the re-evaporation of the drain.

Further, in winter when the temperature is low, for example, in a cold region, it is difficult to keep the sample gas warm, and the drain inside the pipe may freeze.

The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to obtain a heating pipe mechanism capable of reliably draining water in a sample gas and preventing freezing. is there.

[0006]

In order to achieve the above object, a heating pipe mechanism according to the present invention comprises a heating pipe configured to heat an upstream side of a pipe connected to a drain separator provided in an analyzer. And a pipe exposed portion provided in an outside air atmosphere between the heating pipe and the analyzer, and a cladding tube for covering the exposed pipe portion so as to form an air passage with an outer periphery of the exposed pipe portion, Air inlets and outlets which are communicated with the air passages and are provided inside the cladding tube inside the analyzer and inside the outside air, respectively, and suck air or air inside the analyzer through the air passage arranged in the analyzer. And a pump for discharging.

That is, according to the present invention, a cladding pipe is provided on the outer circumference of a pipe exposed part extending from a heating pipe and connected to the inlet side of the analyzer, and an air passage is formed between the outer circumference of the pipe exposed part and the inner circumference of the coating pipe. A pump for sucking outside air or discharging air from the analyzer through the air passage is installed in the analyzer, so that when the temperature (outside air) is low, such as in winter in a cold region, the analyzer can be used. The inside air is exhausted to the air passage by a pump, and the slightly hot air flows from the air inlet to the air outlet while flowing against the outer periphery of the exposed pipe, so that the sample gas passing through the exposed pipe can be kept warm. Also, when the temperature is high, such as in summer, outside air is sucked into the air passage and slightly low-temperature air flows from the air inlet to the air outlet while flowing against the outer periphery of the exposed pipe. Allows cooling the sample gas passing through the pipe bare portion.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited thereby. In FIG. 1, a heating pipe mechanism includes a pipe P connected to a drain separator 2 provided in the analyzer 1.
Heating pipe 3 heating the upstream side of
Stainless steel that covers the exposed pipe portion 4 so as to form an air passage S between the exposed pipe portion 4 provided in the outside air atmosphere between the sample and the analyzer inlet E, and the outer periphery of the exposed pipe portion 4, or A pipe (cladding pipe) 5 made of the same structural material, air inlets and outlets 6 and 7 communicating with the air passage S and provided inside the pipe 5 and inside the analyzer and outside air, respectively, and disposed in the analyzer 1. Air passage S
And a pump 8 for sucking or discharging the outside air or the air in the analyzer 1 through the pump.

Reference numerals 9 and 10 denote a power supply port for a heating pipe and a filter for removing dust, respectively. Reference numeral 11 denotes a drain water seal discharge trap for discharging the drain separated by the drain separator 2. . Further, the pipe exposed portion 4 extends from the heating pipe 3 and reaches the drain separator 2 through the inlet E of the analyzer 1.

In this embodiment, a pipe 5 is provided on the outer periphery of a pipe exposed portion 4 connected to the inlet side of the analyzer 1, and an air passage S is formed between the outer periphery of the pipe exposed portion 4 and the inner periphery of the pipe 5. A pump 8 is formed in the analyzer 1 for forming and sucking the outside air into the air passage or discharging the air in the analyzer 1 through the air passage S. ) Is low, the air in the analyzer 1 is discharged to the air passage S by the pump 8 and the temperature is slightly increased (+10).
° C) from the air inlet 6 to the air outlet 7 while flowing against the outer periphery of the exposed pipe portion 4 through which the sample gas passes, thereby keeping the sample gas warm and maintaining the temperature of the sample gas in the summer. When the air temperature is high, the sample gas can be cooled by sucking the outside air into the air passage S and flowing the slightly low-temperature air A from the air inlet 7 to the air outlet 8 while hitting the outer periphery of the pipe exposed portion 4. Note that, in FIG.
The direction of the flow of the outside air A sucked in is shown by a solid line,
The flow direction of the air B in the analyzer 1 discharged into the air passage S by the pump 8 is indicated by a dotted line.

As described above, in this embodiment, the pipe 6 is provided on the outer periphery of the pipe exposed portion 4 to form a double pipe having the air passage S, and the inlet 7 and the outlet 6 for taking in the outside air are provided. Since the pump 8 for flowing the air into the air passage S is installed, the temperature difference between the inside and the outside of the analyzer 1 is utilized, and in the summertime when the temperature is high, the air with a slightly low temperature of the outside air is supplied to the analyzer 1 The exhaust gas temperature can be cooled by flowing the gas into the inside. On the other hand, when the temperature (outside air) is low, such as in winter in a cold region, the exhaust gas can be kept warm by flowing slightly higher air inside the analyzer 1 through the air passage S to the outside.

[0012]

[Effects of the Invention] As described above, according to the present invention,
A cladding tube is provided on the outer periphery of the exposed pipe portion connected to the inlet side of the analyzer to form an air passage between the outer periphery of the exposed pipe portion and the inner periphery of the cladding tube. Is installed in the analyzer so that the air in the analyzer is discharged to the air passage by the pump when the temperature (outside air) is low, such as in winter in a cold region, when the pump is exhausted through the air passage. By flowing slightly hot air from the air inlet to the air outlet while hitting the outer circumference of the exposed pipe through which the sample gas passes, the sample gas can be kept warm. A sample that passes through the exposed pipe section by sucking air into the air passage and flowing slightly cold air from the air inlet to the air outlet while flowing against the outer circumference of the exposed pipe section Vinegar can be cooled. As a result, there is an effect that moisture in the sample gas of the analyzer such as flue gas can be reliably drained and freezing can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an overall configuration showing an embodiment of the present invention.

[Explanation of symbols]

1 ... analyzer, 2 ... drain separator, 3 ... heating pipe,
Reference numeral 4 denotes a pipe exposed part, 5 denotes a stainless steel pipe (covered pipe), 6, 7 denotes an air inlet / outlet, 8 denotes a pump, P denotes a pipe, and S denotes an air passage.

Claims (1)

(57) [Scope of request for utility model registration] 1. A heating pipe for heating an upstream side of a pipe connected to a drain separator provided in an analyzer, and a pipe exposed in an outside atmosphere between the heating pipe and the analyzer. And a cladding tube for covering the exposed pipe portion so as to form an air passage with the outer periphery of the exposed pipe portion. The cladding tube communicates with the air passage and is provided on the inside of the analysis device and on the outside air atmosphere side of the cladding tube. A heating pipe mechanism comprising: a designated air inlet / outlet; and a pump disposed in the analyzer and sucking or discharging outside air or air in the analyzer through the air passage.