Water seal device for vacuum breaking valve of condenser

Abstract

The utility model relates to the technical field of thermal power plant condensers, and discloses a condenser vacuum breaking valve water seal device. Comprising a base and further comprises a condenser body arranged on the top of the base, a fixing pipe is arranged on one side of the condenser body, and a branch pipe is communicated with the inner wall of the fixing pipe. According to the communicating pipe principle, the branch pipe emptying opening and the automatic water replenishing tank are communicated with the atmosphere, the water level is always equal in height, water can be automatically injected if sealing water is lost, meanwhile, the system is simple, safe and reliable, energy is saved, consumption is reduced, the aim that the water does not need to be continuously replenished to the water sealing pipe in the unit operation process can be achieved, and desalted water is saved; and the original water replenishing device and the operation energy consumption are saved.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology in thermal power plants, specifically to a condenser vacuum breaker valve water seal device. Background Technology

[0002] In thermal power plants, vacuum breaker valves are installed near the throat of the condenser. When the unit needs to be shut down urgently due to a sudden event, the vacuum breaker valve can be opened quickly to connect the condenser with the atmosphere, break the vacuum in the condenser, reduce the coasting time of the turbine rotor, and thus achieve rapid shutdown to protect the unit and personnel safety.

[0003] In thermal power plants, vacuum breaker valves are installed near the throat of the condenser. When the unit needs to shut down urgently due to a sudden event, the vacuum breaker valve can open quickly, connecting the condenser to the atmosphere, breaking the vacuum inside the condenser, reducing the turbine rotor coasting time, and thus achieving rapid shutdown to protect the unit and personnel safety. However, to prevent water from the water seal pipe from being drawn into the condenser due to a slight leak in the vacuum breaker valve, which would affect the vacuum, the existing water supply line from the demineralized water to the water seal pipe is often kept in a water supply state. Excess water overflows from the water seal pipe and flows by gravity into the sludge pit, then is pumped out of the turbine hall by the sludge pump. This results in a large overflow of demineralized water, wasting the high-cost demineralized water produced by the power plant and increasing the plant's production costs. The sludge pump's power consumption also increases. The overflowing demineralized water flows by gravity into the sludge pit and needs to be pumped out by the sludge pump, further increasing the sludge pump's power consumption. The demineralized water pump's power consumption also increases because the water supply to the vacuum breaker valve's water seal pipe cannot be stopped, causing the demineralized water pump's water volume to increase and its operating time to be extended, thus increasing the demineralized water pump's power consumption. Utility Model Content

[0004] The purpose of this invention is to provide a water seal device for a condenser vacuum breaker valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a condenser vacuum breaker valve water seal device, including a base, and further comprising:

[0006] A condenser body is installed on top of the base. A fixed pipe is provided on one side of the condenser body. A branch pipe is connected to the inner wall of the fixed pipe. A water discharge electric valve is provided at one end of the fixed pipe. A horizontal pipe is connected to the inner wall of the branch pipe. A water tank is connected at one end of the horizontal pipe.

[0007] Preferably, the inner wall of the condenser body is connected to a connecting pipe, and one end of the connecting pipe is connected to a first flange.

[0008] Preferably, the inner wall of the condenser body is connected to an installation pipe, and one end of the installation pipe is connected to the inner wall of the fixed pipe.

[0009] Preferably, the inner wall of the branch pipe is connected to a filter screen for filtering dust.

[0010] Preferably, a scale is fixedly connected to one side of the water tank, and a water inlet pipe is connected to the top of the water tank.

[0011] Preferably, one end of the mounting pipe is connected to a second flange, and a sealing gasket is installed on the inner wall of the fixing pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, by setting up a condenser body, fixed pipe, branch pipe, electric drain valve, horizontal pipe, water tank, and vacuum breaker valve body, can easily achieve automatic replenishment of sealing water without the need for continuous water replenishment to the water seal pipe. Based on the principle of interconnected pipes, the branch pipe drain port and the automatic water replenishment tank are connected to the atmosphere, and the water level is always at the same level. If sealing water is lost, water can be automatically replenished. At the same time, the system is simple, safe, reliable, energy-saving, and reduces consumption. It can achieve the goal of not needing to continuously replenish water to the water seal pipe during unit operation, which saves demineralized water, as well as the original water replenishment device and operating energy consumption. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the condenser vacuum breaker valve water seal device provided by this utility model;

[0015] Figure 2 A schematic diagram of the condenser body and branch pipe structure provided by this utility model;

[0016] Figure 3 A schematic diagram of the water tank and scale provided by this utility model;

[0017] Figure 4 A schematic diagram of the electric drain valve and mounting pipe provided by this utility model.

[0018] In the diagram: 1. Base; 2. Condenser body; 3. Fixed pipe; 4. Branch pipe; 5. Electric drain valve; 6. Horizontal pipe; 7. Water tank; 8. Connecting pipe; 9. First flange; 10. Installation pipe; 11. Filter screen; 12. Scale; 13. Inlet pipe; 14. Second flange; 15. Sealing gasket; 16. Vacuum breaker valve body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 As shown, a condenser vacuum breaker valve water seal device includes a base 1, which facilitates the fixing of the condenser body 2. The condenser body 2 is mounted on top of the base 1, which facilitates the creation of a high vacuum at the turbine exhaust port. This is prior art and will not be described in detail here. A fixing pipe 3 is provided on one side of the condenser body 2, which facilitates pipeline connection. A branch pipe 4 is connected to the inner wall of the fixing pipe 3, which facilitates water storage. A drain electric valve 5 is provided at one end of the fixing pipe 3, which facilitates water level adjustment. This is also prior art and will not be described in detail here. The inner wall of branch pipe 4 is connected to horizontal pipe 6. By setting horizontal pipe 6, water source can be easily transported, and automatic replenishment of sealing water can be achieved without the need for continuous water replenishment to the water seal pipe. According to the principle of connecting pipe, the drain port of branch pipe 4 and water tank 7 are connected to the atmosphere, and the water level is always at the same height. If sealing water is lost, water can be automatically replenished. One end of horizontal pipe 6 is connected to water tank 7. By setting water tank 7, water source can be easily stored. One end of fixed pipe 3 is connected to vacuum breaker valve body 16. By setting vacuum breaker valve body 16, equipment safety can be easily protected. It is used to automatically open to break the vacuum effect when negative pressure or vacuum gradually increases in the pipeline or container due to system operation or shutdown. This is existing technology and will not be described in detail here.

[0021] The inner wall of the condenser body 2 is connected to a connecting pipe 8. By setting the connecting pipe 8, it is easy to install the first flange 9. One end of the connecting pipe 8 is connected to the first flange 9. By setting the first flange 9, it is easy to connect the pipeline. The inner wall of the condenser body 2 is connected to an installation pipe 10. By setting the installation pipe 10, it is easy to connect the condenser body 2. One end of the installation pipe 10 is connected to the inner wall of the fixed pipe 3.

[0022] The inner wall of the branch pipe 4 is connected to a filter screen 11 for filtering dust; a scale 12 is fixedly connected to one side of the water tank 7, and the water level of the water tank 7 can be easily observed by setting the scale 12; the top of the water tank 7 is connected to a water inlet pipe 13, and the water source can be easily added by setting the water inlet pipe 13.

[0023] One end of the mounting pipe 10 is connected to the second flange 14. By setting the second flange 14, it is easy to connect the drain electric valve 5. The inner wall of the fixed pipe 3 is equipped with a sealing gasket 15. By setting the sealing gasket 15, the sealing performance of the branch pipe 4 during installation can be improved.

[0024] Working principle: The condenser body 2 is connected to the vacuum breaker valve body 16 via a pipeline; the lower outlet of the fixed pipe 3 has an electric drain valve 5; the branch pipe 4 drains outward at an angle; the lower part of the branch pipe 4 drain outlet is connected to the water tank 7 via a horizontal connecting pipe 6. Water injection process: At this time, all valves at both ends of the vacuum breaker valve body 16 are open. First, close the lower valve, then inject sealing water into the water tank 7. When the water level reaches the valve at the top of the fixed pipe 3, close the valve. At this time, continue to inject water until it reaches the vicinity of the branch pipe 4 drain outlet to complete the water injection process; Emergency water discharge process: At the same time, open the valves at both ends of the vacuum breaker valve body 16, and the sealing water flows out quickly through the upper valve to quickly break the unit vacuum.

[0025] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] 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 condenser vacuum breaker valve water seal device, comprising a base (1), characterized in that, Also includes: A condenser body (2) is set on the top of the base (1). A fixed pipe (3) is set on one side of the condenser body (2). A branch pipe (4) is connected to the inner wall of the fixed pipe (3). A water discharge electric valve (5) is set at one end of the fixed pipe (3). A horizontal pipe (6) is connected to the inner wall of the branch pipe (4). A water tank (7) is connected to one end of the horizontal pipe (6). A vacuum breaker valve body (16) is connected to one end of the fixed pipe (3).

2. The condenser vacuum breaker valve water seal device according to claim 1, characterized in that: The inner wall of the condenser body (2) is connected to a connecting pipe (8), and one end of the connecting pipe (8) is connected to a first flange (9).

3. The condenser vacuum breaker valve water seal device according to claim 1, characterized in that: The inner wall of the condenser body (2) is connected to an installation pipe (10), and one end of the installation pipe (10) is connected to the inner wall of the fixed pipe (3).

4. The condenser vacuum breaker valve water seal device according to claim 1, characterized in that: The inner wall of the branch pipe (4) is connected to a filter screen (11) for filtering dust.

5. The condenser vacuum breaker valve water seal device according to claim 1, characterized in that: A scale (12) is fixedly connected to one side of the water tank (7), and a water inlet pipe (13) is connected to the top of the water tank (7).

6. The condenser vacuum breaker valve water seal device according to claim 3, characterized in that: One end of the mounting pipe (10) is connected to a second flange (14), and a sealing gasket (15) is installed on the inner wall of the fixing pipe (3).

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