JPS61205790A - Supplementing water pouring device for water condensing plant - Google Patents

Abstract

PURPOSE:To save power for auxiliary machine in the water condensing plant by a method wherein a supplementing water pump bypass pipeline, pouring water in a supplementing water tank into a condenser by utilizing vacuum in the condenser, is provided in the pipeline of the plant and a supplementing water pump is operated upon emergency only. CONSTITUTION:The bypass pipeline 6 is provided in the pipeline 3, connecting the condenser 1 and the supplementing water tank 2, and a nonreturn valve 7 is provided in the bypass pipeline. The condenser 1 is provided with a necessary vacuum degree by an air extractor, therefore, the supplementing water for leaked water in the water condensing plant can be supplemented through the bypass pipeline 6 without operating the pump 4 by elevating normal water level in the supplementing water tank 2 utilizing the vacuum (about 720mmHg) in the condenser. The supplementing water pump 4 is operated upon emergency only in such a case that the vacuum in the condenser 1 is reduced, the water level in the supplementing water tank 2 is lowered abnormally or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for injecting water in a make-up water tank into a condenser in a condensate plant.

2. Description of the Related Art A conventional make-up water injection device for a condensate plant is shown in FIG.

In FIG. 2, the water in the makeup water tank 2 is injected into the condenser 1 by operating the condenser 1, makeup water tank 2, and water supply pump 4.

Problems to be Solved by the Invention However, it is desirable to stop the pump operation in normal operation when the make-up water pump is constantly operated, and the smaller the plant capacity, the more unnecessary the constant operation of the make-up water pump becomes. It is necessary to save power.

Therefore, the present invention has been made in order to reduce the power of auxiliary equipment in a condensate plant and improve plant efficiency.

Means for Solving the Problems The present invention provides a make-up water pump bypass line in the conduit that connects the condenser and the make-up water tank and in which the make-up water pump is interposed, so that the make-up water pump is not always connected to the make-up water tank. Water in the make-up water tank is injected through this bypass pipe using the vacuum inside the water dispenser, so that the make-up water pump is not used, and the pump is operated in an emergency.

EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1, the difference from that shown in FIG. 2 is that a bypass pipe 6 for the make-up water pump 4 is provided in the pipe 3 connecting the condenser 1 and the make-up water tank 2, and this bypass pipe It has a configuration in which a check valve 7 is provided in the passageway.

Thus, since the condenser 1 has the necessary vacuum level by means of an air extractor (not shown), the vacuum inside this condenser (approximately 72
0 mm H9) and by raising the water level in the normal make-up water tank 2, make-up water for leaked water in the condensate plant can be replenished through the bypass pipe 6 without operating the pump 4. . The make-up water pump 4 is activated when the vacuum in the condenser 1 decreases or when the make-up water tank 2
Operate in case of emergency, such as when the water level inside the tank drops abnormally.

Effects of the Invention As detailed above, according to the present invention, a make-up water pump bypass line is provided so that the make-up water pump is operated only in an emergency, thereby reducing the power consumption of auxiliary equipment in the condensate plant. This power saving rate increases as the plant capacity decreases.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an example of a make-up water injection device for a condensate plant according to the present invention, and FIG. 2 is a diagram showing a conventional example. 1. Condenser, 2. Make-up water tank, 3. Pipeline, 4.
- Makeup water pump, 5... Valve, 6... Makeup water pump bypass pipe, 7... Check valve.

Claims (1)

[Claims] In a make-up water injection device for a condensate plant in which a make-up water pump is installed in a pipe connecting a condenser and a make-up water tank, the make-up water tank is connected to the condenser by utilizing the vacuum inside the condenser. A make-up water injection device which is provided with a make-up water pump bypass line for injecting the water inside the condenser into the condenser.