A water-saving device for a waste heat boiler deaerator

Abstract

This utility model discloses a water-saving device for a waste heat boiler deaerator, including a deaerator tower for removing dissolved oxygen from water, a demineralized water tank below the deaerator tower, a deaerator inlet pipe connected to the deaerator tower for water intake, a steam pipe connected to the deaerator tower for deoxygenation, and a louvered steam-water separator connected to the top of the deaerator tower for steam-water separation. The tail end of the louvered steam-water separator is connected to a first bend, the tail end of the first bend is connected to a second bend, the tail end of the second bend is connected to a vertical pipe, the tail end of the vertical pipe is connected to a perforated plate steam-water separator for steam-water separation, and the tail end of the perforated plate steam-water separator is connected to a third bend. By adding a steam-water separator, not only is water loss during the deaerator deoxygenation process reduced, but the problem of steam-water separation during deaerator venting in a thermal deaerator system is also solved. Furthermore, the temperature of the deaerator can be better controlled when the deaerator steam pressure changes.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to a water-saving device for a waste heat boiler deaerator. Background Technology

[0002] Boiler deaerator equipment structure diagram as follows Figure 1 As shown, the exhaust pipe of the waste heat boiler deaerator is located at the top of the deaerator tower, and the exhaust pipe is connected to the deaerator tower. The deaerator tower and the water-saving device are connected by a pipeline. In order to remove dissolved oxygen from the water more effectively, the pressure and temperature of the demineralized water tank need to be controlled within a certain range to achieve better deaeration and a higher boiler feedwater temperature.

[0003] When the boiler feedwater temperature rises and the pressure in the deaerator water tank increases, a large amount of water is carried out of the deaerator tower vent pipe, resulting in water waste. Utility Model Content

[0004] This utility model provides a water-saving device for a waste heat boiler deaerator, which aims to solve the problem that when the boiler feedwater temperature rises and the pressure in the deaerator water tank increases, a large amount of water is carried out in the deaerator tower vent pipe, resulting in water waste.

[0005] Therefore, the present invention adopts the following technical solution:

[0006] A water-saving device for a waste heat boiler deaerator includes a deaerator tower for deoxygenation, a deaerator water tank for storing deoxygenated water connected below the deaerator tower, a demineralized water pipeline for supplying water to the deaerator and a steam pipeline for deoxygenation and heating of the deaerator, and a regulating valve added to the steam pipeline to control the steam flow.

[0007] It also includes an vent pipe, the end of which is connected to a shut-off valve, the end of which is connected to a louvered steam-water separator, the end of which is connected to a first bend, the end of which is connected to a second bend, the end of which is connected to a perforated plate steam-water separator, and the end of which is connected to a third bend.

[0008] Furthermore, it also includes pressure transmitters and temperature measuring elements installed on the deaerator water tank to detect the temperature and pressure of the deaerator water tank, and controlling the opening and closing degree of the deaerator heating regulating valve through the pressure transmitters and temperature measuring elements.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention is mainly applied to the feedwater system of waste heat boilers. By adding a water receiving device, not only is the boiler feedwater temperature increased, but the problem of deoxygenated water waste in the feedwater delivery system is also solved. At the same time, water is not wasted when the feedwater temperature rises and the pressure in the deoxygenated water tank increases. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a waste heat boiler deaerator.

[0012] Figure 2 This is a schematic diagram of the water-saving device structure of the deaerator drain pipe of the waste heat boiler;

[0013] In the diagram: 1-Deaerator water tank, 2-Deaerator tower, 3-Deaerator water supply pipe, 4-Drain pipe, 5-Deaerator heating regulating valve, 6-Deaerator heating steam pipe, 7-Pressure transmitter, 8-Temperature measuring point, 9-Stop valve, 10-Louvre type steam-water separator, 11-First bend, 12-Second bend, 13-Perforated plate type steam-water separator, 14-Three-bend pipe, 15-Deaerator water supply regulating valve. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0015] like Figure 1 and 2 As shown, a waste heat boiler deaerator water-saving device includes a deaerator tower 2 for deoxygenation, a deaerator water tank 1 for storing deoxygenated water connected below the deaerator tower 2, a demineralized water pipe 3 for supplying water to the deaerator connected to the deaerator tower 2, a steam pipe 6 for heating the deaerator tower 2, and a deaerator heating regulating valve 5 added to the steam pipe 6 to control the steam flow.

[0016] It also includes an exhaust pipe 4, which is connected to the top of the deaerator tower 2; the tail end of the exhaust pipe 4 is connected to a shut-off valve 9, the tail end of the shut-off valve 9 is connected to a louvered steam-water separator 10, the tail end of the louvered steam-water separator 10 is connected to a first bend 11, the tail end of the first bend 11 is connected to a second bend 12, the tail end of the second bend 12 is connected to a perforated plate steam-water separator 13, and the tail end of the perforated plate steam-water separator 13 is connected to a third bend 14.

[0017] It also includes a pressure transmitter 7 and a temperature measuring element 8 installed on the deaerator water tank 1 to detect the temperature and pressure of the deaerator water tank, and to control the opening and closing of the deaerator heating valve 5 through the pressure transmitter 7 and the temperature measuring element 8. During operation, when the deaerator pressure 7 rises, water flows out of the third bend pipe 14. When the louvered steam-water separator 10 and the perforated plate steam-water separator 13 are working, they separate the water carried out by the steam in the drain pipe 4, thereby solving the problem of drainage in the deaerator drain pipe and achieving the purpose of water saving in the deaerator drain pipe.

Claims

1. A waste heat boiler deaerator water saving device, characterized in that, It includes a deoxygenation tower (2) for deoxygenation, a deoxygenation water tank (1) for storing deoxygenated water connected below the deoxygenation tower (2), a demineralized water pipe (3) for supplying water to the deoxygenator connected to the deoxygenation tower (2), a steam pipe (6) for deoxygenation and heating of the deoxygenator connected to the deoxygenation tower (2), and a deoxygenator heating regulating valve (5) added to the steam pipe (6) to control the steam flow rate; It also includes an exhaust pipe (4) connected to the top of the deaerator (2), the tail end of the exhaust pipe (4) is connected to a stop valve (9), the tail end of the stop valve (9) is connected to a louvered steam-water separator (10), the tail end of the louvered steam-water separator (10) is connected to a first bend (11), the tail end of the first bend (11) is connected to a second bend (12), the tail end of the second bend (12) is connected to a perforated plate steam-water separator (13), and the tail end of the perforated plate steam-water separator (13) is connected to a third bend (14).

2. The boiler deaerator water saving device according to claim 1, characterized in that, The pressure transmitter (7) and temperature measuring element (8) are installed on the deaerator water tank (1) to detect the temperature and pressure of the deaerator water tank. The opening and closing degree of the deaerator heating regulating valve (5) is controlled by the pressure transmitter (7) and temperature measuring element (8).

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