Condenser of water-cooled turboset

Abstract

A water-cooled steam turbine unit condenser comprises a base and a condensing cylinder transversely mounted on the base, a cooling water input pipeline is rotatably mounted at one end of the condensing cylinder, and a cooling water output pipeline is rotatably mounted at the other end of the condensing cylinder. The cooling water input pipeline and the cooling water output pipeline on the outer side of the condensing cylinder are communicated with cooling water conveying pipelines through rotary joints, the cooling water input pipeline and the cooling water output pipeline in the condensing cylinder are communicated with each other through a plurality of cooling water diversion pipelines, and cooling gaps are reserved between the cooling water diversion pipelines; a spraying pipeline is arranged at the top of the condensing cylinder and is externally connected with a dosing pipeline, a steam input port communicated with a steam exhaust pipeline of a steam turbine is formed in the bottom of the condensing cylinder on one side of the cooling water output pipeline, and a condensed water output port is formed in the bottom of the condensing cylinder on one side of the cooling water input pipeline. The water quality of the condensed water can be effectively improved, scale generation is reduced, the cooling efficiency is improved, and normal steam exhaust of the steam turbine is guaranteed.

Description

Technical Field

[0001] The utility model relates to a condenser, in particular to a water-cooled steam turbine unit condenser. Background Art

[0002] In current steam turbine systems, condensers are generally used as core processing equipment for the high-temperature and high-pressure steam discharged, aiming to achieve dual goals: one is to effectively recover the large amount of heat energy contained in the steam, and the other is to convert the steam into liquid water for subsequent recycling. Among the many types of condensers, water-cooled condensers dominate due to their high efficiency and wide applicability. This type of condenser uses circulating cooling water as a heat exchange medium to directly cool the high-temperature and high-pressure steam, causing it to quickly cool down and condense into water.

[0003] However, it is worth noting that water sources such as boiler water often contain a variety of chemical components. These components will precipitate during the steam condensation process and mix into the condensate, causing its water quality to deteriorate. Under long-term operation, these chemical components will gradually deposit inside the condenser to form scale that is difficult to remove. This will not only seriously hinder the heat transfer efficiency, leading to a decline in the overall performance of the condenser and reduced energy efficiency, but may also damage the structure of the condenser and shorten its service life. What is more serious is that the scale problem inside the condenser may also have an adverse effect on the normal exhaust process of the turbine.

[0004] Therefore, how to effectively solve the scaling problem inside the water-cooled condenser and improve the quality of condensate has become an important issue that needs to be urgently addressed in the current maintenance and optimization of steam turbine systems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a water-cooled steam turbine unit condenser which can effectively improve the quality of condensed water, reduce scale generation, improve cooling efficiency and ensure normal exhaust of the steam turbine in view of the deficiencies in the prior art.

[0006] The technical problem to be solved by the utility model is achieved through the following technical solutions. The utility model is a water-cooled steam turbine unit condenser, comprising a base and a condenser cylinder transversely mounted on the base, a cooling water input pipe is rotatably mounted on one end of the condenser cylinder, a cooling water output pipe is rotatably mounted on the other end of the condenser cylinder, the cooling water input pipe and the cooling water output pipe outside the condenser cylinder are both connected to cooling water delivery pipes through a rotary joint, the cooling water input pipe and the cooling water output pipe inside the condenser cylinder are connected to each other through a plurality of cooling water branch pipes, a cooling gap is left between the cooling water branch pipes, a driving device for driving the cooling water input pipe to rotate is mounted on the base; a spray pipe is arranged on the top of the condenser cylinder, the spray pipe is externally connected to a dosing pipe, a plurality of rotating nozzles are mounted on the spray pipe, a steam input port connected to a steam turbine exhaust pipe is arranged at the bottom of the condenser cylinder on one side of the cooling water output pipe, and a condensate output port is arranged at the bottom of the condenser cylinder on one side of the cooling water input pipe.

[0007] The technical problem to be solved by the present invention can be further achieved by the following technical solution. For the water-cooled steam turbine condenser described above, a rotary dynamic seal is installed at the junction of the cooling water input pipe, the cooling water output pipe and the condenser cylinder.

[0008] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the water-cooled steam turbine condenser described above, the driving device is a motor, and the motor shaft of the motor is connected to the cooling water input pipeline through a transmission gear.

[0009] The technical problem to be solved by the present invention can also be further achieved through the following technical scheme. For the water-cooled steam turbine unit condenser described above, water distribution trays are installed on the cooling water input pipe and the cooling water output pipe, and the two ends of the cooling water distribution pipe are respectively connected to the water distribution trays on the cooling water input pipe and the cooling water output pipe.

[0010] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the water-cooled steam turbine condenser described above, heat-conducting fins are further installed on the cooling water distribution pipe.

[0011] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the water-cooled steam turbine condenser described above, a steam trap is further installed on the condensate cylinder at the condensate outlet.

[0012] The technical problem to be solved by the present invention can be further achieved through the following technical solutions. For the above-mentioned water-cooled steam turbine unit condenser, a safety valve is installed on the top of the condenser cylinder.

[0013] The technical problem to be solved by the present utility model can also be further realized by the following technical solutions. For the above-mentioned water-cooled steam turbine condenser, the condenser barrel is integrally cylindrical.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Significantly improve heat exchange efficiency and flexibility:

[0016] The present utility model ingeniously installs the cooling water input pipe and output pipe at both ends of the condenser barrel in a rotating manner, connects them to the external cooling water delivery pipe through a rotary joint, and drives the rotation of the cooling water input pipe through the driving device on the base, which can further promote the uniform distribution and effective circulation of the cooling water in the condenser barrel, ensure that the steam is fully cooled and condensed into water, and improve the operation efficiency and stability of the entire steam turbine unit;

[0017] 2. Intelligent water quality management and maintenance optimization:

[0018] The present utility model combines the spray pipe set with the external medicine adding pipe, which is convenient for evenly spraying the medicine adding solution into the interior of the condenser barrel, effectively adjusting key parameters such as the pH value and hardness of the cooling water, thereby inhibiting the formation of deposits such as scale, protecting the condenser from the threats of corrosion and blockage, not only extending the service life of the condenser, but also reducing the costs generated by scale cleaning and maintenance;

[0019] 3. Optimized layout and efficient condensation:

[0020] The present utility model fully considers the convenience of steam input and condensate output in the layout. The steam input port is arranged at the bottom of the condenser barrel on the side of the cooling water output pipe, which is conducive to the rapid entry of steam into the condenser barrel and heat exchange with the cooling water, while the condensate output port is located at the bottom of the condenser barrel on the side of the cooling water input pipe, facilitating the timely discharge and recycling of the condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the water distribution plate of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Referring to Figure 1-2 , a water-cooled steam turbine condenser, comprising a base 1 and a condenser cylinder 2 horizontally installed on the base 1. The condenser cylinder 2, as the core component of the entire condenser, not only optimizes the internal flow field with its cylindrical design but also facilitates installation and maintenance.

[0025] One end of the condenser cylinder 2 is rotatably installed with a cooling water input pipe 3, and the other end of the condenser cylinder 2 is rotatably installed with a cooling water output pipe. Cooling water conveying pipes are connected to both the cooling water input pipe 3 and the cooling water output pipe outside the condenser cylinder 2 through rotary joints. The cooling water input pipe 3 and the cooling water output pipe inside the condenser cylinder 2 are interconnected through a plurality of cooling water diversion pipes 5. Water distribution plates 4 are installed on both the cooling water input pipe 3 and the cooling water output pipe. Both ends of the cooling water diversion pipe 5 are connected to the water distribution plates 4 on the cooling water input pipe 3 and the cooling water output pipe respectively. A cooling gap 6 is left between the cooling water diversion pipes 5. A driving device 7 for driving the rotation of the cooling water input pipe 3 is installed on the base 1. The cooling water input pipe 3 and the cooling water output pipe are respectively rotatably installed at both ends of the condenser cylinder 2 and are connected to the external cooling water conveying pipes through rotary joints, realizing the continuous circulation of cooling water. This design realizes the rotation of the cooling water diversion pipes 5 inside the condenser cylinder 2, thereby allowing the cooling water to flow dynamically inside the condenser cylinder 2 and improving the heat exchange efficiency.

[0026] The driving device 7 is used to provide power for the rotation of the cooling water input pipe 3. Preferably, the driving device 7 is a motor, and the motor shaft of the motor is in transmission connection with the cooling water input pipe 3 through a transmission gear. At the same time, in order to ensure the sealing and safety of the condenser cylinder 2, rotary dynamic seals are installed at the joints of the cooling water input pipe 3, the cooling water output pipe and the condenser cylinder 2.

[0027] On one side of the condensate cylinder 2 at the bottom of the cooling water output pipeline, there is a steam input port 10 connected to the steam exhaust pipeline of the steam turbine for steam input. To prevent steam backflow, a check valve can also be installed at the steam input port 10. After the steam enters the interior of the condensate cylinder 2, since the cooling water is evenly distributed through a number of cooling water diversion pipelines 5, there is also enough cooling gap 6 between the cooling water diversion pipelines 5 to ensure that the steam can fully exchange heat with the cooling water in the cooling water diversion pipelines 5, ensuring the heat exchange efficiency. To further improve the heat exchange efficiency, heat conducting fins are also installed on the cooling water diversion pipelines 5. At the bottom of the condensate cylinder 2 on one side of the cooling water input pipeline 3, there is a condensate output port for the output of condensate. To achieve draining water without discharging steam, a steam trap 11 is also installed on the condensate cylinder 2 at the condensate output port.

[0028] To improve the quality of the condensate water in the condensate cylinder 2 and reduce the formation of water scale, a spray pipeline 8 is provided at the top of the condensate cylinder 2. The spray pipeline 8 is externally connected to a chemical dosing pipeline, and a number of rotary nozzles 9 are installed on the spray pipeline 8, facilitating the spraying of chemical agents such as acid additives, deoxidizers, neutralizing agents, etc. into the condensate cylinder 2 through the externally connected chemical dosing pipeline, for improving water quality, preventing equipment corrosion and sediment formation. At the same time, the design of the rotary nozzles 9 can enable the agents to be evenly sprayed into all corners inside the condensate cylinder 2, improving the usage efficiency and effect of the agents.

[0029] During actual use, for safety assurance, a safety valve 12 is installed at the top of the condensate cylinder 2.

[0030] The working process of the present utility model is described as follows:

[0031] 1. Steam input and cooling water circulation start:

[0032] When the steam turbine starts to operate, high-temperature steam enters the bottom of the condensate cylinder 2 through the steam input port 10. At this time, the driving device 7 (motor) starts, drives the cooling water input pipeline 3 to rotate through the transmission gear, and at the same time, the cooling water enters the rotating cooling water input pipeline 3 from an external water source through the cooling water delivery pipeline and the rotary joint, starting its circulation process;

[0033] 2. Cooling water distribution and heat exchange:

[0034] The cooling water flows in the cooling water input pipeline 3 and is evenly distributed into the interior of the condensate cylinder 2 through a number of cooling water diversion pipelines 5. There is a cooling gap 6 between these diversion pipelines, enabling the steam to fully contact the surface of the cooling water diversion pipelines 5 to achieve heat exchange. At the same time, the heat conducting fins installed on the cooling water diversion pipelines 5 further increase the heat exchange area and improve the heat exchange efficiency;

[0035] 3. Steam condensation and condensate formation:

[0036] As the continuous heat exchange between the steam and the cooling water progresses, the steam gradually loses heat and condenses into water. The condensed water flows along the inner wall of the condenser cylinder 2 towards the condensate outlet at the bottom under the action of gravity. During this process, the steam trap 11 plays a crucial role in ensuring the smooth discharge of the condensed water while preventing the uncondensed steam from escaping outward;

[0037] 4. Cooling Water Output and Recycling Continues:

[0038] The cooling water that has absorbed the heat of the steam collects in the cooling water output pipeline and flows back to the external cooling system through the rotary joint and the cooling water delivery pipeline. After being cooled, it is recycled. This cyclic design not only improves the utilization rate of the cooling water but also reduces the waste of water resources;

[0039] 5. Safety and System Protection:

[0040] A safety valve 12 is installed at the top of the condenser cylinder 2 to prevent equipment damage or safety accidents caused by excessive internal pressure in the system. In addition, the installation of the spray pipeline 8 and the rotary nozzle 9 enables the spraying of chemical agents (such as acidic additives, etc.) into the interior of the condenser cylinder 2 when necessary to improve water quality or protect the equipment from corrosion.

Claims

1. A water-cooled steam turbine condenser, characterized in that: It includes a base and a condenser installed transversely on the base, a cooling water input pipe is rotatably installed on one end of the condenser, a cooling water output pipe is rotatably installed on the other end of the condenser, the cooling water input pipe and the cooling water output pipe outside the condenser are connected with cooling water delivery pipes through rotating joints, the cooling water input pipe and the cooling water output pipe inside the condenser are connected with each other through a plurality of cooling water branch pipes, cooling gaps are left between the cooling water branch pipes, a driving device for driving the cooling water input pipe to rotate is installed on the base; a spray pipe is arranged on the top of the condenser, the spray pipe is externally connected with a dosing pipe, a plurality of rotating nozzles are installed on the spray pipe, a steam input port connected with a turbine exhaust pipe is arranged at the bottom of the condenser on one side of the cooling water output pipe, and a condensate output port is arranged at the bottom of the condenser on one side of the cooling water input pipe.

2. The water-cooled steam turbine condenser according to claim 1, characterized in that: Rotary dynamic seals are installed at the joints of the cooling water input pipe, cooling water output pipe and condenser.

3. The water-cooled steam turbine condenser according to claim 1 or 2, characterized in that: The driving device is a motor, and the motor shaft of the motor is drivingly connected to the cooling water input pipeline through a transmission gear.

4. The water-cooled steam turbine condenser according to claim 1, characterized in that: Water distribution plates are installed on both the cooling water input pipe and the cooling water output pipe, and the two ends of the cooling water distribution pipe are respectively connected with the water distribution plates on the cooling water input pipe and the cooling water output pipe.

5. The water-cooled steam turbine condenser according to claim 1, characterized in that: Heat-conducting fins are also installed on the cooling water distribution pipe.

6. The water-cooled steam turbine condenser according to claim 1, characterized in that: A steam trap is also installed on the condensate cylinder at the condensate outlet.

7. The water-cooled steam turbine condenser according to claim 1, characterized in that: A safety valve is installed on the top of the condenser.

8. The water-cooled steam turbine condenser according to claim 1 or 7, characterized in that: The condenser cylinder is cylindrical in shape as a whole.

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