Overflow water saving control system used when steam pocket adopts deaerator to supply water

Abstract

The utility model relates to the technical field of overflow water recycling when a heating furnace steam pocket adopts a deaerator to replenish water, in particular to an overflow water saving control system when the steam pocket adopts the deaerator to supply water, which comprises a steam pocket, a deaerator and a water pump, the tail part of the overflow pipe is connected with the water tank; a tee joint is arranged on the overflow pipe and connected with a deaerator overflow pipe, and the deaerator overflow pipe is connected with a deaerator; a water inlet of the water pump is provided with a deaerator water supply pipe, and the tail of the deaerator water supply pipe is connected with a deaerator. According to the overflow water-saving control system when the steam pocket adopts the deaerator to supply water, the recovery and direct utilization of deoxygenated water are realized, secondary heating is not needed, the utilization rate is improved, the water supplementing amount of the deoxygenated pump is indirectly reduced, and the power consumption is reduced; the use of steam is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of overflow water recycling technology when the boiler drum of a heating furnace uses deaerator for water supply, and specifically to an overflow water saving control system when the boiler drum uses deaerator for water supply. Background Technology

[0002] There are two ways to supply water to the boiler drum: one is water supply from the water tank, and the other is water supply from the deaerator. However, regardless of the method of water supply, water is pumped into the boiler drum through the water pump pipeline. In order to control the water supply pressure, an overflow pipe is connected in parallel on the water pump outlet pipeline for pressure regulation. One end of the overflow pipe is inserted into the water tank to overflow water into the water tank.

[0003] Because the water tank contains cold water while the deaerator contains high-temperature water reheated by steam, when the steam drum switches to deaerator water supply, the high-temperature hot water overflowing from the upper water pump needs to be reheated after returning to the water tank before it can be used, resulting in a waste of electrical and thermal energy. Therefore, it is necessary to design an overflow water saving system for steam drums using deaerator water supply to solve the energy waste caused by the need for secondary heating in existing steam drum water supply systems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an overflow water saving control system for steam drums when using a deaerator for water supply.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an overflow water saving control system for a steam drum using a deaerator for water supply, including a steam drum, a deaerator, and a water pump. A water pump supply pipe is installed at the water pump outlet and connected to the steam drum. A T-junction is provided on the water pump supply pipe to connect to an overflow pipe, and the end of the overflow pipe is connected to a water tank. A T-junction is provided on the overflow pipe to connect to the deaerator overflow pipe, and the deaerator overflow pipe is connected to the deaerator. A deaerator supply pipe is installed at the water pump inlet, and the end of the deaerator supply pipe is connected to the deaerator.

[0006] Specifically, the water pump is connected to the water pump motor via a coupling.

[0007] Specifically, a gate valve for the water tank is installed on the overflow pipe at the connection between the water tank and the overflow pipe.

[0008] Specifically, a gate valve is installed on the water supply pipe at the connection between the water pump and the water supply pipe.

[0009] Specifically, a gate valve for the deaerator water supply pipe is installed on the deaerator water supply pipe.

[0010] Specifically, an overflow gate valve is installed on the overflow pipe at the connection between the water pump supply pipe and the overflow pipe.

[0011] Specifically, a deaerator overflow gate valve is installed on the deaerator overflow pipe at the connection between the deaerator overflow pipe and the deaerator.

[0012] Specifically, a steam drum gate valve is installed on the water pump supply pipe at the connection between the steam drum and the water pump supply pipe.

[0013] This utility model has the following beneficial effects:

[0014] The steam drum designed in this utility model adopts an overflow water-saving control system during deaerator water supply, which realizes the direct recycling and utilization of deoxygenated water without secondary heating, improves utilization rate, indirectly reduces the amount of water to be made up for the deaerator pump, and reduces power consumption; it also reduces the use of steam and saves energy consumption.

[0015] The steam drum designed in this utility model adopts an overflow water-saving control system during deaerator water supply, which realizes 100% effective utilization of deaerated hot water and meets the adjustment needs of different water supply paths. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pipeline connection structure of the overflow water saving control system when the steam drum uses a deaerator for water supply.

[0017] In the diagram: 1-Steam drum; 2-Deaerator; 3-Water tank; 4-Water pump; 5-Water pump motor; 6-Overflow pipe; 7-Deaerator water supply pipe; 8-Deaerator overflow pipe; 9-Water pump water supply pipe; 10-Water tank gate valve; 11-Water pump gate valve; 12-Deaerator water supply pipe gate valve; 13-Overflow pipe gate valve; 14-Deaerator overflow pipe gate valve; 15-Steam drum gate valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] like Figure 1 As shown, an overflow water-saving control system for a steam drum using a deaerator for water supply includes a steam drum 1, a deaerator 2, and a water pump 4. A water pump supply pipe 9 is installed at the outlet of the water pump 4 and connected to the steam drum 1. A T-junction is provided on the water pump supply pipe 9 to connect to an overflow pipe 6, and the tail end of the overflow pipe 6 is connected to a water tank 3. A T-junction is provided on the overflow pipe 6 to connect to a deaerator overflow pipe 8, and the deaerator overflow pipe 8 is connected to the deaerator 2. A deaerator supply pipe 7 is installed at the inlet of the water pump 4, and the tail end of the deaerator supply pipe 7 is connected to the deaerator 2.

[0020] Water pump 4 is connected to water pump motor 5 via a coupling.

[0021] A water tank gate valve 10 is installed on the overflow pipe 6 at the connection between water tank 3 and overflow pipe 6.

[0022] A water pump gate valve 11 is installed on the water pump supply pipe 9 at the connection between water pump 4 and water pump supply pipe 9.

[0023] A deaerator water supply pipe gate valve 12 is installed on the deaerator water supply pipe 7.

[0024] An overflow gate valve 13 is installed on the overflow pipe 6 at the connection between the water pump supply pipe 9 and the overflow pipe 6.

[0025] A deaerator overflow pipe gate valve 14 is installed on the deaerator overflow pipe 8 at the connection between the deaerator overflow pipe 8 and the deaerator 2.

[0026] A steam drum gate valve 15 is installed on the water pump supply pipe 9 at the connection between the steam drum 1 and the water pump supply pipe 9.

[0027] A gate valve is installed at the connection between the overflow pipe 6 and the water tank 3 to cut off the overflow water from entering the water tank.

[0028] A branch pipe is led out from the middle of the overflow pipe 6 and connected to the water supply pipe of the deaerator 2, and a gate valve is added for control.

[0029] Water tank 3 contains cold water, while deaerator 2 contains high-temperature water after steam reheating. When steam drum 1 switches to deaerator 2 for water supply, the hot water from deaerator 2 enters water pump 4 through deaerator water supply pipe 7, and is then supplied to steam drum 1. The high-temperature hot water overflowing from water pump 4 is connected to water tank 3 by a gate valve 10 installed on the overflow pipe 6 at the connection between water tank 3 and overflow pipe 6, which cuts off the overflow water from water tank 3. A tee is installed in the middle of the overflow pipe 6 to connect to deaerator overflow pipe 8, which is connected to deaerator 2. The high-temperature hot water overflowing from water pump 4 flows back to deaerator 2 through deaerator overflow pipe 8, realizing the direct recycling and reuse of deaerated water without secondary heating, improving utilization rate, indirectly reducing the amount of water to be added to the deaerator pump, reducing power consumption, reducing steam usage, and saving energy consumption.

[0030] This utility model is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

[0031] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-saving overflow control system for a steam drum using a deaerator for water supply, characterized in that, The system includes a steam drum, a deaerator, and a water pump. The water pump outlet is connected to the steam drum via a water pump supply pipe. The water pump supply pipe is connected to an overflow pipe via a tee, and the end of the overflow pipe is connected to a water tank. A tee is also connected to the deaerator overflow pipe via the overflow pipe, and the deaerator overflow pipe is connected to the deaerator. The water pump inlet is connected to a deaerator supply pipe, and the end of the deaerator supply pipe is connected to the deaerator.

2. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 1, characterized in that, The water pump is connected to the water pump motor via a coupling.

3. The overflow water saving control system for steam drums using deaerator water supply according to claim 1, characterized in that, A gate valve for the water tank is installed on the overflow pipe at the connection between the water tank and the overflow pipe.

4. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 2, characterized in that, A gate valve is installed on the water supply pipe at the connection between the water pump and the water supply pipe.

5. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 1, characterized in that, A deaerator water supply pipe gate valve is installed on the deaerator water supply pipe.

6. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 4, characterized in that, An overflow gate valve is installed on the overflow pipe at the connection between the water pump supply pipe and the overflow pipe.

7. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 5, characterized in that, A deaerator overflow gate valve is installed on the deaerator overflow pipe at the connection between the deaerator overflow pipe and the deaerator.

8. The overflow water saving control system for a steam drum using a deaerator for water supply according to claim 4, characterized in that, A steam drum gate valve is installed on the water pump supply pipe at the connection between the steam drum and the water pump supply pipe.

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