JPS5956006A - Feedwater device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Mr. Motoyama (1986-1986) proposed a patent application for a low-temperature economizer using a heat-resistant glass tube as a heat transfer tube. 152858) Since the water supply device of the present invention is a water supply device suitable for heating water supply using a low-temperature economizer made of a heat-resistant glass tube, prior to explaining the present invention, Mazusaki has filed a patent application. A low-temperature economizer made of thermal glass will be explained with reference to FIGS. 1 and 2, which show examples thereof.

This heat-resistant glass low-temperature economizer has many +iP
I heat glass tubes 1, 1'... on each side plate 2.3
Holes 4, 4'... and 5゜5'... provided in the plates are placed horizontally through holes 8, 8'..., 9.9 which have collar flanges on the inside of these 111!1 plates, respectively.
'...It is covered with large area molded parts 6 and 7 made of Aphron, and a small area molded part made of Buflon with holes 12 and 13 each having a color fludge on the outside of the cholera side panels. Many cedar items 10.10'...and 11°1
Paste 1'...Identification using the fixing means (provided with -, each +!
j'l Thermal glass-i8￥1fi At both ends
Airtightly and elastically supported by the collar flange holes 10.6 and 7.11, each heat-resistant glass tube 1 has two sides,
On the inside and outside of the pipes 2 and 3, they are connected to each other by U-shaped pipes 14, 14'... to form a long continuous pipe. This 4
One end of the piping is a water supply pipe 15, and the tip of the water supply pipe 15 is connected to a valve 1 in the soft water tank 16, and the other end is a discharge pipe 18, and the discharge pipe 1B is connected to a water supply pump. It has a structure that is connected to the naction side of No. 19. In Figure 1 both 111! The arrow shown between plates 2 and 3 indicates the flow direction of the combustion exhaust gas, and this low-temperature economizer is designed for use at a temperature where the exhaust gas does not burn out Teflon or heat-resistant glass, that is, around 260℃ or below. be done. If the exhaust gas temperature is higher than 260°C, heat is recovered using a steel air brake heater or other heat exchanger such as a steel economizer.

This heat-resistant glass low-temperature economizer is a water supply pump with 1
9 on the suction side to make the internal pressure below atmospheric pressure,
In addition, the heat-resistant glass tubes are connected continuously to prevent stagnation in the water supply, thereby making it difficult for evaporation to occur within the low-temperature economizer.

This low-temperature economizer made of heat-resistant glass is capable of recovering heat until the corrosive exhaust gas cools down to near the dew point.
It is durable and will not be corroded by exhaust gas.

Suntako's low-temperature economizer reduces the exhaust gas temperature to 1
If the temperature drops to close to 00℃, it becomes easier to desulfurize the exhaust gas for exhaust gas.

However, if the economizer is provided on the water supply side of the water supply pump 19, if steam is generated within the economizer, smooth constant g (g) supply will not be possible.

FIG. 3 shows a water supply device that has improved the above-mentioned drawbacks.

The exhaust gas discharged from the boiler 21 passes through the smoke 622 and is exhausted by the chimney 23.

A bypass 24 is provided in the flue 22, and an economizer 25 is provided in the bypass 24. Dampers 26, 26' and 26'' are provided in the flue 23 and the bypass 24, respectively, to adjust the amount of gas flowing through the bypass 24. An intake port 30 is provided, and the delivery pipe 31 of the 1JltJ-'A pump 28 is connected to the water receiving side of the economizer 25.The water sent out by the circulation pump 28 is sent to the economizer.
After being heated at 25, it is returned to the water tank 27 through its discharge pipe 32. Separately, an intake port 35 of the suction blind 34 of the water supply pump 33 is provided below the water surface in the water tank 27, and a delivery pipe 36 of the water supply pump 33 is connected to the header 37 of the boiler 21 to supply water. Of course the water tank 2
7 has a level control means 38Q, and according to the signal from the level control means, the makeup water bonozo 39
The make-up water is replenished with the help of water tank 27.
d maintained at a predetermined water surface.

In the water supply system shown in FIG. 3, a coniconomizer 25 is provided on the delivery side of the circulation pump 28, and a discharge pipe 32 of the economizer 25 is open to the water tank 27. Therefore, the internal pressure inside the eco-tsumizer 25 is always about atmospheric pressure. Such an open circulation type economizer' does not fall under the category of a pressure vessel, and therefore does not need to be inspected as a pressure vessel.

However, in the water supply system shown in FIG. The temperature of the water replenished into the soft water tank 27 is at room temperature of about 20°C, and both are mixed in the water tank 27 and relatively close to the intake "dark 5" installed at the (1) position of the water tank 27. The temperature of the water supplied to the header 37 of the water supply Honda 33 and the header 37 of the water supply Bonozo 33, ]・-21 is 1/: F, generally at a low temperature and a maximum of 7
It is about 0'C.

The water supply device of the present invention is an invention that allows water at about 95° C. to be sent to the boiler 21 and further increases the heat exchange of the economizer 25.

The water supply device of the present invention will be explained with reference to FIGS. 4, 5, and 6 showing embodiments thereof. The difference between the conventional water supply device shown in FIG. 3 and the present invention is the level control means 38.3.
A cylindrical body 41 is provided in a water tank 27 that has a length of 9'tL. Alternatively, as shown in FIG. 6, the cylindrical body 4 is placed vertically adjacent to the water tank 27 and connected to the water tank 27 at its upper part and main part.
1 will be provided. The segment 41 is 8F! As shown in FIG. 4, a ventilation hole 40 is located above the water level in the water tank of the cylindrical body 41 if it protrudes from the top surface of the water tank 27 and is closed.
40'... is provided. 130 is provided at a position outside the cylindrical body 41 of the water tank 27 to take in the suction pipe 29 of the circulation pump 28 that supplies water to the economizer 25; A discharge port for the discharge pipe 32 is provided. Therefore, 2L of water heated to 95 DEG C. is supplied to the economizer 25 into the cylindrical body 41. The cylindrical body 41 is located at the door, and its water surface is connected to the water tank 27.
It is always the same as the water surface of - Therefore, it is a constant water surface. Even if steam is generated in the economizer 25, this steam passes through the vent hole 40 and is disposed of in the water tank 27, and the amount of water in the cylinder body 41 is equal to the amount of water sent out by the circulation pump 28. Heated water returns. There is an intake port 3 of the water pump 33 at a position below the water surface in the cylinder 41.
5 is provided, and the f') bell pipe 36 of the water supply pump 33 is connected to the header 37 of the boiler 21.

The water supply device of the present invention has the above-described structure and can supply water at about 95°C to a boiler. Economizer-25
(He died 161 years ago on the delivery side of the 1st Dunshin Pump 28.
When 1σ time is applied to the economizer 25, the water of 1) can be pumped into the economizer 25. −
The amount of water supplied to the water pump 25 can be set to n1'4 so that the water supply volume of the water supply pump 33 is the same as 1i. In addition, the structure L, which uses an open 4!% I4 circulation system using the ζ circulation pump 28 and does not require four inspections as a pressure vessel,
Therefore, a low temperature economizer made of heat-resistant glass can be used, and in this case, the problem of corrosion of the economizer can be solved.

[Brief explanation of drawings]

Figures 1 and 2 show 1111, an economizer made of heat-resistant glass for low Y and 'a, which was invented and patented before this application.
11' An enlarged side sectional view showing a state in which the folding surface and the heat-resistant glass tube are fixed to the side plate. Fig. 3 is an explanatory diagram of a conventional flood control device using a heat-resistant glass economizer for low temperatures; Figs. - It is an explanatory view of a water supply device suitable for use. 1il''i, 1iIII thermal glass tube 2, 3 are side plates 4,
5 is a temporary hole on the side 6, 7 is a large area molded product 8. ! II is a hole with a collar flange of a large-area molded product, 10°11 is a hole with a collar flange of a large-area molded product, and 10°11 is a small-area molded product 12, 13. ° is the color flange hole for small area molded products 14? :l: U-shaped pipe 15 is a water supply pipe 16 is a water tank 17 is a no-I valve 18 is a drain pipe 19 is a water pump 20 is a delivery pipe 21 is a boiler 22a
Flue 23 is chimney 24 is bypass 25 is econo 7
-rzer 26 is damper 27 is water tank 28 is 1
Shield ring bong 29 is Zakujon tube 30 is intake port 31
32 is the delivery pipe 32 is the discharge surface 33 is the water supply pump 34 is the shoe E171 35 is the Ll or population 36 is the delivery pipe 37 & j, the boiler header 38 is the level control 1 full means 39-4 is the make-up water 1
f1 stomata 41 is node: Book 5? 2 60th 31-

Claims (1)

[Claims] A cylindrical body 41 is provided in the water tank 27 having the level control means 3a, 3s, or the water tank 2
7 and the upper and lower parts of the cylinder body 41 in the adjacent position.
is provided outside the segment 41 within the water tank 27 (11!
The intake port 30 of the sac John 'f29 of the circulation pump 28 for supplying soft water to the economizer 25 is provided at the position I, and the discharge port '1f of the economizer 25 is provided at the upper position in the cylinder 41.
A suction port #34 of the water supply pump 33 is provided at a position below the water surface in the core portion f*41.
5 is provided, and the delivery system 36 of the water supply pump 33 is connected to the water supply destination 〆t1゜