JPH0245764B2 - KYUSUISOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present inventor first heated water to about 95°C using an economizer using a heat-resistant glass tube and heated it in a heated water bottle in a water tank or continuously in the upper and lower parts of the water tank. He has invented a water supply device that can supply heated water at 95°C to a high-pressure water supply destination, such as a boiler, by supplying the heated water into a heated water cylinder installed adjacent to the heated water tank.

Before explaining the water supply device of the present invention, the water supply device previously invented by the present inventor will be explained with reference to FIGS. 1, 2, and 3 showing embodiments thereof.

In FIG. 1, 1 is a boiler 2, and a flue 3 is a chimney. A bypass flue 4 is provided in the flue 2, and a low-temperature economizer 5 using a heat-resistant glass tube is provided in the bypass flue 4 to control the amount of exhaust gas flowing through the bypass flue 4 and the temperature of the exhaust gas. and adjusting dampers 6, 6', 6'' are provided at the inlet and outlet of the bypass flue 4, respectively.

7 is a water tank. The water supply device of the previous invention is characterized by the water tank 7 as shown in FIGS. 1 and 2.
A heated water bottle 21 is provided inside the tank, or connected to the water tank 7 at the top and bottom as shown in FIG. The intake port 10 of the suction pipe 9 of the circulation pump 8 is provided outside the heating water bottle 21 in the water tank 7, and the discharge end of the discharge pipe 12 of the economizer 5 using the heat-resistant glass tube is provided inside the heating water bottle 21. The intake port 15 of the suction pipe 14 of the water supply pump 13 which supplies heated water to a high-pressure water supply destination such as the header 17 of the boiler 1 is provided at a lower position inside the heating water cylinder 21,
The delivery pipe 16 of the water supply pump 13 is connected to the boiler 1.
It has a structure in which it is connected to the header 17 of.

For example, a float mechanism 18 is installed in the Naho water tank 7.
A water surface height detection mechanism such as the above is provided, and the make-up water pump 19 is activated by the transmission from the detection mechanism, so that the water surface height in the water tank 7 is kept constant. There is.

If the heated water bottle 21, which is a feature of the previous invention, is not provided, even if some of the water is heated to 95°C by the economizer 5, which uses a heat-resistant glass tube, it will be returned to the water tank 7. The temperature of the supply water mixed with the water in the water tank 7 and makeup water and pumped from the water tank by the water supply pump 13 is approximately 70°C at most. By providing a heating water cylinder 21, the temperature of the heated water pumped up by the water supply pump 13 and supplied to a high-pressure water supply destination can be set to about 95°C. The economizer 5, which uses a heat-resistant glass tube, is not treated as a pressure vessel because its discharge end is open to atmospheric pressure.

The disadvantage of the previous invention is that the economizer 5, which uses a heat-resistant glass tube, is for low temperatures and cannot pass high-temperature exhaust gas over 280°C. The amount of exhaust gas flowing through the flue 4, that is, the temperature of the exhaust gas must be adjusted to an appropriate amount and must be kept to a small amount.

In the water supply system of the present invention, an economizer using a conventional steel pipe is provided in the bypass flue 4 at a position upstream of the economizer 5 using a heat-resistant glass pipe, and the delivery pipe 16 of the water supply pump 13 is first connected to the water supply system of the present invention. It is directly connected to an economizer using steel pipes, and after being further heated, it is supplied to a high-pressure supply destination, so that a larger amount of exhaust gas can flow through the bypass flue 4 than the water supply device of the previous invention. be.

The water supply device of the present invention will be explained with reference to FIG. 4 showing an embodiment thereof.

The water supply system shown in FIG. 4 according to the present invention is different from the water supply system shown in FIG.
A conventional general economizer 22 using steel pipes is provided at the upstream position of the heating water cylinder 21, and the delivery pipe 16 of the water supply pump 13, which has the intake port 15 of the suction pipe 14 at the lower part of the heating water cylinder 21, is connected to the economizer 22 using the steel pipes. , Economizer 22 using the steel pipe
The discharge pipe 23 of the boiler 1 is connected to the header 17 of the boiler 1.

In the bypass flue 4, the steel pipe economizer 22 is located at an upstream position, and the heat-resistant glass pipe economizer 5 is located at a downstream position. The exhaust gas flowing into the bypass flue 4 first exchanges heat with the steel pipe economizer 22, and through the heat exchange,
Once the temperature reaches 280°C or lower, heat is exchanged with economizer 5 using a heat-resistant glass tube. Therefore, the larger the steel pipe economizer 22 is, the more high-temperature exhaust gas can flow into the bypass flue 4.
Of course, high-pressure heated water pushed out by the water supply pump 13 flows inside the steel pipe economizer 22.
The feed water is pushed from the steel pipe economizer 22 to the high pressure header 17 of the boiler 1, and for example, if the header 17 is 8 kg/cm ² , the temperature of the feed water is raised from 95°C to 140°C in the steel pipe economizer 22. , thus increasing the thermal efficiency of the boiler.

The economizer 22 using steel tubes is different from the economizer 5 using heat-resistant glass tubes, and like the boiler 1, it is a pressure vessel and requires inspection as a pressure vessel as required by law.

The water supply device of the present invention has a larger amount of heat exchange than the water supply device of the previous invention, and is therefore suitable for desulfurization before exhausting smoke from the flue.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, and FIG. 3 are explanatory diagrams of a water supply device that was previously invented by the present inventor. FIG. 4 is an explanatory diagram of the water supply device according to the present invention. 1 is a boiler, 2 is a flue, 3 is a chimney, 4 is a bypass flue, 5 is an economizer using a heat-resistant glass tube, 6 is an adjustment damper, 7 is a water tank, 8 is a circulation pump, 9 is a suction pipe, 10 is Intake port, 11
is the delivery pipe, 12 is the discharge pipe, 13 is the water pump,
14 is a suction pipe, 15 is an intake port, 16 is a delivery pipe, 17 is a header, 18 is a water level detection mechanism,
19 is a makeup water pump, 20 is a vent, 21 is a heating water bottle, 22 is an economizer using steel pipes, and 23 is a discharge pipe.

Claims (1)

[Claims] 1. A heating water cylinder 21 is provided in the water tank 7 or adjacent to the water tank 7 by connecting it to the upper and lower parts, and a heat-resistant glass tube is installed at the downstream position of the bypass flue 4 of the flue 2, that is, on the low temperature side. An economizer 5 is provided, and the intake port 10 of the suction pipe 9 of the circulation pump 8 that supplies water to the economizer 5 is provided at a position outside the heating water bottle 21 in the water tank 7, and the heat-resistant glass tube is used. The discharge end of the discharge pipe 12 of the economizer 5 using a pipe is provided at an upper position in the heating water bottle 21, and the economizer 22 using a steel pipe is provided at the upstream position of the bypass flue 4 of the flue 2, that is, on the high temperature side. The intake port 15 of the suction pipe 14 of the water supply pump 13 that supplies heated water to the economizer 22 in use is provided at the lower part of the heating water cylinder 21, and the discharge pipe 23 of the economizer 22 in steel pipe is connected to a high-pressure water supply destination 17 such as a boiler. A water supply device with a structure connected to.