Novel steam seal cooler drainage system
By adding U-shaped pipes to the hydrophobic bypass pipeline of the steam seal cooler, a pressure difference is formed to achieve steam-water separation, which solves the problem of incomplete condensation of steam in the prior art, ensuring the stability of 100% condensation water discharge and hydrophobic temperature. Eliminate noise pollution.
Patent Information
- Application Number
- CN202421302155.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The existing steam seal coolers cannot achieve 100% condensation of steam, resulting in difficulty in automatic hydrophobic discharge of steam and condensed water in the pipeline in a separate state, resulting in white water mist and noise pollution.
Add a U-shaped pipeline lower than the pressure-free drain port to the hydrophobic bypass pipeline of the steam seal cooler to form a pressure difference in the steam pipe, realize steam-water separation, and allow condensation water to accumulate in the U-shaped pipeline, ensuring 100% condensation Water discharge, prevent steam from entering the low-level water tank and eliminate sound.
Complete separation of steam and condensate is achieved, and steam is prevented from entering the low-level water tank to heat the condensate in the water tank, ensuring the stability of the hydrophobic temperature and eliminating noise pollution caused by the soda and water mixture in the hydrophobic water.
Smart Images
Figure CN222296322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a novel steam seal cooler drain system. Background Art
[0002] The heat exchanger water side of the steam seal cooler adopts a four-flow structure. The cooling water first enters the inlet water chamber from the water inlet of the steam seal cooler, and then flows into the tube bundle in the steam seal cooler shell. When the cooling water flows in the heat exchange tubes in the steam seal cooler, it exchanges heat with the steam entering the steam seal cooler shell (steam side). The cooling water absorbs a large amount of steam condensation heat, the water temperature rises, and finally enters the outlet water chamber and overflows the steam seal cooler through the cooling water outlet. The steam from the front and rear shaft seals of the steam turbine enters the inner side of the steam seal cooler shell from the steam leakage inlet of the steam seal cooler through the steam leakage pipe. The steam flows through the diversion of the middle partition in the steam seal cooler shell, and continuously flows between the heat exchange tubes of the cooler in the tube bundle and exchanges heat. Most of the steam will release a large amount of heat and condense into water when passing through the outer wall of the heat exchange tube. The condensed water is discharged from the drain port and enters the drain pipe. Since there is some non-condensable air in the leaking steam, in order to allow the leaking steam to continuously enter the steam seal cooler through the leaking steam pipe, the gas needs to be extracted and the air and residual steam discharged into the atmosphere.
[0003] The function of the steam seal cooler is to make the steam leakage pipes of the front and rear steam seals of the steam turbine slightly negative pressure, so that the leaking gas continuously enters the steam seal cooler through the steam leakage pipe and condenses it into water for reuse by the boiler. However, the existing steam seal cooler structure cannot condense the steam 100%. The steam and condensed water in the pipe are separated, and the automatic steam trap discharges a steam-water mixture. Part of the steam and condensed water are discharged into the atmosphere. The steam condenses into a large amount of white water mist in the outside air, causing visual pollution and noise pollution. Utility Model Content
[0004] In view of the above problems, the utility model provides a novel steam seal cooler drain system.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of steam seal cooler drain system, including a steam seal cooler arranged between a steam turbine and a low-level water tank, a steam pipe and a drain pipe are arranged between the steam seal cooler and the low-level water tank, the steam pipe is arranged on a side close to the steam seal cooler, a drain bypass pipe is connected above the drain pipe, a U-shaped pipe is connected above the drain bypass pipe, and a pressure-free drain port is arranged below the steam seal cooler, wherein the height of the U-shaped pipe is lower than the height of the pressure-free drain port.
[0006] Preferably, it further comprises a connecting pipe, one end of which is connected to the outlet end of the steam seal cooler, and the other end of which is connected to the steam pipe.
[0007] Preferably, it also includes a pressure-free water discharge pipe connected to the connecting pipe, and a pressure-free water discharge port is formed at the connection between the steam pipe, the connecting pipe and the pressure-free water discharge pipe.
[0008] Preferably, a steam trap, a first valve and a second valve are provided on the steam trap pipeline, and the steam trap is provided between the first valve and the second valve.
[0009] Preferably, a third valve is provided on the drain bypass pipe, and the left and right ends of the U-shaped pipe are respectively connected to the left and right outer sides of the third valve.
[0010] Preferably, the steam turbine and the steam seal cooler are connected via a steam leakage pipe, a pressure gauge and a thermometer are connected to the steam leakage pipe, and the thermometer is arranged on a side away from the steam turbine.
[0011] Preferably, a fourth valve is provided on the steam leakage pipeline, and the fourth valve is located between the steam turbine and the pressure gauge.
[0012] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:
[0013] The utility model provides a novel steam seal cooler drain system. A U-shaped pipe lower than the pressureless drain port is added to the drain bypass pipe of the steam seal cooler, so that a pressure difference is formed inside the steam pipe. The steam-water mixed medium in the steam pipe is separated into steam and water in the steam pipe, so that condensed water accumulates in the U-shaped pipe. The pressure difference forms a water seal to ensure that 100% condensed water flows out of the U-shaped pipe, and steam is prevented from entering a low-level water tank to heat the condensed water in the water tank, thereby ensuring the drain temperature and eliminating the sound generated by the steam-water mixed medium in the drain. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0015] Figure 1 This is a schematic diagram of a novel steam seal cooler drain system of the utility model. DETAILED DESCRIPTION
[0016] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0017] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0020] Example
[0021] refer to Figure 1 A novel steam seal cooler drain system includes a steam seal cooler 3 arranged between a steam turbine 1 and a low-level water tank 2, a steam pipe 4 and a drain pipe 5 are arranged between the steam seal cooler 3 and the low-level water tank 2, the steam pipe 4 is arranged on a side close to the steam seal cooler 3, a drain bypass pipe 9 is connected above the drain pipe 5, a U-shaped pipe 10 is connected above the drain bypass pipe 9, and a pressure-free drain port 7 is arranged below the steam seal cooler, wherein the height of the U-shaped pipe 10 is lower than the height of the pressure-free drain port 7. With this structure, by adding a U-shaped pipe 10 to the drain pipe 5, the steam-water mixed medium is cooled, depressurized, and separated inside the steam pipe 4, the drain temperature is ensured, and the sound generated by the steam-water mixed medium in the drain is eliminated.
[0022] It also includes a connecting pipe 6, one end of which is connected to the outlet end of the steam seal cooler 3, and the other end of the connecting pipe 6 is connected to the steam pipe 4; it also includes a pressure-free water discharge pipe 11 connected to the connecting pipe 6, and a pressure-free water discharge port 7 is formed at the connection between the steam pipe 4, the connecting pipe 6 and the pressure-free water discharge pipe 11.
[0023] The drain pipe 5 is provided with a steam trap 31, a first valve 32 and a second valve 33, and the steam trap 31 is arranged between the first valve 32 and the second valve 33. With this structure, when the equipment is damaged, the arrangement of the first valve 32 and the second valve 33 plays a role of isolation and maintenance.
[0024] The drain bypass pipe 9 is provided with a third valve 91, and the left and right ends of the U-shaped pipe 10 are respectively connected to the left and right outer sides of the third valve 91. With this structure, when the drain pipe 5 is blocked, water can be drained from the drain bypass pipe 9, and the drain bypass pipe 9 plays a role of backup and supplement; when the drain pipe 5 is not blocked, the third valve 91 is in a normally closed state.
[0025] The steam turbine 1 and the steam seal cooler 3 are connected through a steam leakage pipe 8, and a pressure gauge 82 and a thermometer 83 are connected to the steam leakage pipe 8, and the thermometer 83 is arranged on the side away from the steam turbine 1; a fourth valve 81 is arranged on the steam leakage pipe 8, and the fourth valve 81 is located between the steam turbine 1 and the pressure gauge 82; a fourth valve 81 is arranged on the steam leakage pipe 8, and the fourth valve 81 is located between the steam turbine 1 and the pressure gauge 82. With this structure, when the equipment is damaged, the fourth valve 81 plays a role of isolation and maintenance.
[0026] When in use, a U-shaped pipe 10 lower than the pressureless drain port 7 is added to the drain bypass pipe 9 of the steam seal cooler 3, so that a pressure difference is formed inside the steam pipe 4, and the steam-water mixed medium in the steam pipe 4 is separated into steam and water in the steam pipe 4, so that condensed water accumulates in the U-shaped pipe 10. The pressure difference forms a water seal to ensure that the water flowing out of the U-shaped pipe is 100% condensed water, avoiding steam from entering the low-level water tank 2 to heat the condensed water in the water tank, ensuring the drain temperature, and eliminating the sound generated by the steam-water mixed medium in the drain.
[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A new type of steam seal cooler drain system, including a steam seal cooler arranged between a steam turbine and a low-level water tank, characterized in that: A steam pipe and a drain pipe are arranged between the steam seal cooler and the low-level water tank. The steam pipe is arranged on a side close to the steam seal cooler. A drain bypass pipe is connected above the drain pipe. A U-shaped pipe is connected above the drain bypass pipe. A pressure-free drain port is arranged below the steam seal cooler, wherein the height of the U-shaped pipe is lower than the height of the pressure-free drain port.
2. A novel steam seal cooler drain system according to claim 1, characterized in that: The invention also comprises a connecting pipe, one end of which is connected to the outlet end of the steam seal cooler, and the other end of which is connected to the steam pipe.
3. A novel steam seal cooler drain system according to claim 2, characterized in that: It also includes a pressure-free water discharge pipe connected to the connecting pipe, and a pressure-free water discharge port is formed at the connection between the steam pipe, the connecting pipe and the pressure-free water discharge pipe.
4. A novel steam seal cooler drain system according to claim 1, characterized in that: The drain pipe is provided with a drain device, a first valve and a second valve, and the drain device is arranged between the first valve and the second valve.
5. According to the novel steam seal cooler drain system of claim 1, it is characterized by: The drain bypass pipeline is provided with a third valve, and the left and right ends of the U-shaped pipeline are respectively connected to the left and right outer sides of the third valve.
6. A novel steam seal cooler drain system according to claim 1, characterized in that: The steam turbine and the steam seal cooler are connected via a steam leakage pipeline, a pressure gauge and a thermometer are connected to the steam leakage pipeline, and the thermometer is arranged on a side away from the steam turbine.
7. A novel steam seal cooler drain system according to claim 6, characterized in that: The leaking steam pipeline is provided with a fourth valve, and the fourth valve is located between the steam turbine and the pressure gauge.