Cooling device for supercooling area of condenser

Abstract

The utility model relates to the technical field of power generation auxiliary equipment of steam turbine generator sets, in particular to a cooling device of a condenser supercooling area. Comprising two cold water cavities, a water conveying pipe and circulating water pipelines, the cold water cavities are arranged on the outer side of the condenser, the water conveying pipe is a water pipe arranged on the inner side of the condenser, the circulating water pipelines are arranged in the middles of the two sides of the cold water cavities, the two cold water cavities are symmetrically arranged, circulating water is stored and released in the cold water cavities, and openings are formed in the inner sides of the cold water cavities; the water conveying pipe penetrates through the condenser, the two ends of the water conveying pipe are connected with openings in the two cold water cavities respectively, sealing rings are arranged between the water conveying pipe and the openings of the cold water cavities, the circulating water pipeline comprises a water inlet pipeline and a water outlet pipeline, the water inlet pipeline and the water outlet pipeline are arranged on the two sides of the cold water cavities respectively, and the water inlet pipeline fills cold water into the cold water cavity on one side. The condenser supercooling area cooling device improves the vacuum degree of the condenser and improves the economic benefits of a steam turbine set.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for steam turbine generator sets, specifically to a cooling device for the subcooling zone of a condenser. Background Technology

[0002] Currently, low condenser vacuum is a common problem in steam turbine generator sets in steel enterprises. Condenser vacuum has a significant impact on thermal economy and is a crucial factor affecting the overall thermal efficiency of the unit. Many factors influence condenser vacuum, but circulating water temperature, circulating water volume, and air partial pressure within the condenser are the three major factors. Currently, vacuum pumps are used in steam turbine generator sets to evacuate air from the subcooled zone of the condenser to reduce air partial pressure and increase vacuum. However, since steam content accounts for 2 / 3 of the air pumped, this significantly impacts the pumping capacity of the vacuum pump unit.

[0003] The vapor-air mixture extracted by the vacuum pump from the condenser is 2 / 3 water vapor and 1 / 3 air. Since steam is much denser than air, the 2 / 3 steam volume is the main source of flow resistance in the vacuum pump's evacuation pipe, severely impacting the pump's output. The condensation of water vapor releases a large amount of latent heat of vaporization, which is the primary reason for the high operating water temperature of the vacuum pump. According to the vacuum pump principle, when the operating water temperature exceeds the design temperature, the pump's output will decrease significantly.

[0004] Therefore, there is an urgent need to design a cooling device for the subcooled zone of the condenser to solve the problems of excessive water vapor ratio in the condenser, low condenser vacuum leading to low working efficiency and easy damage to the vacuum pump. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a cooling device for the subcooling zone of a condenser.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a cooling device for the subcooled zone of a condenser, including a cold water chamber, a water supply pipe, an inlet water pipe and an outlet water pipe. The cold water chamber is located outside the condenser, the water supply pipe is a water pipe located inside the condenser, and the inlet water pipe and the outlet water pipe are located on both sides of the cold water chamber.

[0007] Specifically, there are two symmetrically arranged cold water chambers. The cold water chambers store and release circulating water, and there is an opening on the inner side of the cold water chambers. The circulating water contains a descaling agent.

[0008] Specifically, the water supply pipe is a multi-spindle serpentine pipe that passes through the inside of the condenser. A water collection block is provided on the water supply pipe, and the two ends of the water supply pipe are respectively connected to the openings on the two cold water chambers. A sealing ring is provided between the water supply pipe and the opening of the cold water chamber.

[0009] Specifically, the water collection block is located on the loop of each section of the multi-serpentine pipe, and cold water is temporarily stored inside the water collection block.

[0010] Specifically, the sealing ring is made of rubber and is located at the opening of the cold water chamber and the interface of the water supply pipe.

[0011] Specifically, the inlet pipe fills cold water into one side of the cold water chamber, and the outlet pipe discharges water from the other side of the cold water chamber through the condenser water pipe.

[0012] This utility model has the following beneficial effects:

[0013] The condenser subcooling zone cooling device designed in this utility model increases the amount of steam condensation in the condenser, reduces the amount of steam drawn into the vacuum pump, increases the amount of air drawn into the vacuum pump, and improves the vacuum pump's suction capacity, thereby achieving the purpose of improving the condenser vacuum and increasing the economic benefits of the steam turbine unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cooling device in the subcooling zone of the condenser.

[0015] In the diagram: 1-Cold water chamber; 2-Water supply pipe; 2.1-Sealing ring; 2.2-Water collection block; 3-Inlet water pipe; 4-Outlet water pipe; 5-Condenser. Detailed Implementation

[0016] 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.

[0017] Example 1:

[0018] like Figure 1 As shown, a cooling device for the subcooled zone of a condenser includes a cold water chamber 1, a water supply pipe 2, an inlet water pipe 3, and an outlet water pipe 4. The cold water chamber 1 is located outside the condenser 5, the water supply pipe 2 is a water pipe located inside the condenser 5, and the inlet water pipe 3 and the outlet water pipe 4 are located on both sides of the cold water chamber 1.

[0019] Two symmetrically arranged cold water chambers 1 are provided, each with an opening. Cold water chamber 1 stores and releases cold water, which contains a descaling agent. The cold water is below 15 degrees Celsius and is used to cool and condense steam. The descaling agent prevents scale buildup in the cold water chambers 1 and other pipes from causing blockages or damage due to prolonged circulation. A water supply pipe 2 is located inside the condenser 5. The water supply pipe 2 is a serpentine pipe inserted into the condenser 5 and is used to transport cold water. The water supply pipe 2 is equipped with… Water collection block 2.2 is used to temporarily store cold water to prolong the residence time of cold water inside the condenser 5 and increase the contact area with the steam inside the condenser 5. The opening of the water supply pipe 2 and the cold water chamber 1 is directly provided with a sealing ring 2.1. The sealing ring 2.1 is used to seal the connection between the water supply pipe 2 and the cold water chamber 1. The water inlet pipe 3 and the water outlet pipe 4 are respectively located on the outside of the two cold water chambers 1. The water inlet pipe 3 is used to input cold water into the cold water chamber 1. After passing through the water supply pipe 2 and the water pipe of the condenser 5, the cold water is discharged through the water outlet pipe 4.

[0020] 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.

[0021] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

[0022] 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.

[0023] 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 cooling device for the subcooling zone of a condenser, characterized in that, It includes a cold water chamber, a water supply pipe, an inlet water pipe, and an outlet water pipe. The cold water chamber is located outside the condenser, the water supply pipe is a water pipe located inside the condenser, and the inlet water pipe and the outlet water pipe are located on both sides of the cold water chamber.

2. The condenser subcooling zone cooling device according to claim 1, characterized in that, The cold water chambers are two symmetrically arranged. The interior of the cold water chamber stores and releases circulating water. The inside of the cold water chamber has an opening, and the circulating water contains a descaling agent.

3. The condenser subcooling zone cooling device according to claim 1, characterized in that, The water supply pipe is a multi-spindle serpentine pipe that passes through the inside of the condenser. A water collection block is provided on the water supply pipe. Both ends of the water supply pipe are connected to the openings on the two cold water chambers, and a sealing ring is provided between the water supply pipe and the opening of the cold water chamber.

4. The condenser subcooling zone cooling device according to claim 3, characterized in that, The water collection block is installed on the loop of each section of the multi-serpentine pipe, and cold water is temporarily stored inside the water collection block.

5. The condenser subcooling zone cooling device according to claim 3, characterized in that, The sealing ring is made of rubber and is located at the opening of the cold water chamber and the interface of the water supply pipe.

6. The condenser subcooling zone cooling device according to claim 1, characterized in that, The inlet pipe fills cold water into one side of the cold water chamber, and the outlet pipe discharges water from the other side of the cold water chamber through the condenser water pipe.

Images