A generator turbine designed to prevent steam condensation
By installing a thermostatic tube assembly and a conical ring plate inside the steam pipe, using absorbent cotton to absorb condensate, and combining this with electric heating wire to maintain steam superheat, the problem of steam condensation damaging turbine blades is solved, achieving efficient steam transport and utilization, and improving the safety and economy of the power generation system.
Patent Information
- Application Number
- CN202522779033.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-29
AI Technical Summary
Steam is prone to condensation during transportation, which can cause water erosion damage to the turbine blades, water hammer, and energy loss, affecting the safety and economy of the unit.
It adopts a thermostatic tube assembly and conical ring plate structure, combined with water-absorbing cotton and electric heating wire design, to maintain the superheat of steam by heating, guide and absorb condensate, form a heat insulation layer, and avoid the impact of condensate droplets on the blades.
It effectively prevents damage to the blades from condensate droplets, extends the unit's lifespan, reduces maintenance costs, improves steam utilization and operational stability, reduces energy loss, and ensures the safe and economical operation of the power generation system.
Smart Images
Figure CN224943784U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam power generation technology, and in particular to a generator turbine that prevents steam condensation. Background Technology
[0002] In the energy and power sector, steam turbines, as the core power equipment for converting thermal energy into mechanical energy, are widely used in various power generation systems such as thermal power, nuclear power, and combined heat and power. Their operational stability and energy conversion efficiency directly determine the overall economic efficiency, safety, and environmental protection level of the power generation system.
[0003] The working principle of a steam turbine is based on the gradual expansion of high-temperature and high-pressure steam within the flow passage components, which drives the blades to rotate and in turn drives the generator rotor to rotate, ultimately realizing the conversion of thermal energy into electrical energy. The thermodynamic state of the steam (dryness, temperature, and pressure) is a key factor affecting the operating performance of the steam turbine.
[0004] With the continuous growth of electricity demand and the increasingly stringent energy conservation and emission reduction policies, power generation systems are placing increasingly higher demands on the efficiency and long-term operation of steam turbines. However, in actual operation, steam is easily deviated from its superheated state due to multiple factors, such as the pipeline route from the boiler to the turbine, resulting in saturated steam or even condensate. The condensate droplets, carried by the high-speed steam flow, impact the turbine blades, especially the last-stage blades of the low-pressure cylinder, causing severe water erosion damage. This leads to fatigue cracks, thinning of the blades, and even blade breakage, significantly shortening blade life and increasing maintenance costs. Furthermore, the accumulation of condensate in pipelines and low-level cylinders can easily cause water hammer, resulting in pipeline vibration, valve damage, and friction between the turbine's moving and stationary components, damaging critical components such as bearings, threatening the safe operation of the unit, and causing further energy loss. Utility Model Content
[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that steam generates condensate during the transportation process, which affects the normal operation of the generator turbine unit. To this end, we propose a generator turbine that prevents steam condensation.
[0006] To achieve the above objectives, this application adopts the following technical solution: a generator turbine with anti-steam condensation capability, comprising a base, a high-pressure turbine unit and a low-pressure turbine unit fixedly installed on both sides of the upper end of the base, the high-pressure turbine unit being connected to an external boiler, a generator fixedly installed in the middle of the upper end of the base, the output ends of the high-pressure turbine unit and the low-pressure turbine unit being connected to the generator, a steam pipe fixedly installed on the upper end of the generator, the two ends of the steam pipe being connected to the high-pressure turbine unit and the low-pressure turbine unit respectively; The steam pipe includes a thermostatic pipe assembly and multiple conical ring plates fixedly connected to its inner side. The multiple conical ring plates are arranged in an abutting manner. The outer side of the thermostatic pipe assembly is fitted with clamp pipe one and clamp pipe two. Water-absorbing cotton is filled between clamp pipe one and clamp pipe two. Multiple sets of guide pipes are installed at intervals on the inner side of the thermostatic pipe assembly. One end of the guide pipe is connected to the adjacent conical ring plate, and the other end of the guide pipe is connected to the water-absorbing cotton.
[0007] Preferably, a water collection tank is fixedly installed on the inner side of the second clamp pipe, and a drain pipe is fixedly installed at the lower end of the water collection tank. The water collection tank is located in the middle directly below the steam pipe.
[0008] Preferably, the thermostatic tube assembly includes a heat-conducting ring tube fixedly sleeved on the outside of the conical ring plate, an insulating sleeve fixedly sleeved on the outside of the heat-conducting ring tube, a heating wire wrapped inside the insulating sleeve, and the heating wire abutting against the heat-conducting ring tube.
[0009] Preferably, multiple heating wires are provided, and the multiple heating wires are arranged in a circular interval with the heat-conducting ring tube as the axis.
[0010] Preferably, an insulating tube is fixedly fitted on the outer side of the insulating sleeve, and the insulating tube is coated with a tin foil layer.
[0011] Preferably, there is a distance between the insulation tube and the clamp tube, and an annular cavity is formed through this distance.
[0012] The technical effects and advantages of this utility model are as follows: By utilizing the heating function of the thermostatic tube group to maintain the superheat of steam, the probability of steam condensation is reduced from the source. Furthermore, through the guiding effect of the conical ring plate on the condensate and the conveying effect of the guide pipe, the condensate is quickly discharged into the absorbent cotton. The heat insulation layer formed by the absorbent cotton after absorbing the condensate prevents external cold air from directly contacting the thermostatic tube group and affecting the heating effect. This not only effectively eliminates the risk of water erosion damage to the turbine blades by condensate droplets, preventing the occurrence of serious accidents such as blade cracks, fractures, and water hammer, but also significantly extends the service life of the unit and reduces maintenance costs. It also achieves efficient transportation and utilization of secondary steam, reduces energy loss, improves steam utilization and unit operation stability, and ensures the long-term safe and economical operation of the power generation system. Attached Figure Description
[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a top view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the steam pipe structure of this utility model; Figure 3 This is a schematic cross-sectional view of the steam pipe structure of this utility model; Figure 4 This is a cross-sectional schematic diagram of the steam pipe structure of this utility model.
[0014] Legend: 1. Base; 2. High-pressure steam turbine unit; 3. Generator; 4. Low-pressure steam turbine unit; 5. Steam pipe; 51. Thermostatic pipe assembly; 511. Heat-conducting ring pipe; 512. Insulating sleeve; 513. Heating wire; 514. Insulation pipe; 52. Conical ring plate; 53. Pipe clamp one; 54. Pipe clamp two; 55. Absorbent cotton; 56. Annular cavity; 57. Guide pipe; 58. Water collection tank; 59. Drain pipe. Detailed Implementation
[0015] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.
[0016] In actual operation, steam is easily deviated from its superheated state due to multiple factors, such as the pipeline route from the boiler to the turbine, resulting in saturated steam or even condensation. The condensate droplets, carried by the high-speed steam flow, impact the turbine blades, especially the last-stage blades of the low-pressure cylinder, causing severe water erosion damage. This leads to fatigue cracks, thinning of the blades, and even blade breakage, significantly shortening blade life and increasing maintenance costs. Furthermore, condensate accumulation in pipelines and low-lying areas of the cylinder can easily cause water hammer, resulting in pipeline vibration, valve damage, and friction between moving and stationary turbine components, damaging bearings and other critical components, threatening safe unit operation, and causing further energy loss. To address this issue, [the following text is missing from the original extract]. Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a generator turbine with anti-steam condensation, including a base 1, a high-pressure turbine unit 2 and a low-pressure turbine unit 4 are fixedly installed on both sides of the upper end of the base 1 respectively, the high-pressure turbine unit 2 is connected to an external boiler, a generator 3 is fixedly installed in the middle of the upper end of the base 1, the output ends of the high-pressure turbine unit 2 and the low-pressure turbine unit 4 are both connected to the generator 3, a steam pipe 5 is fixedly installed on the upper end of the generator 3, and the two ends of the steam pipe 5 are connected to the high-pressure turbine unit 2 and the low-pressure turbine unit 4 respectively; The steam pipe 5 includes a thermostatic pipe assembly 51 and multiple conical ring plates 52 fixedly connected to its inner side. The multiple conical ring plates 52 are arranged in an abutting configuration. A clamping pipe 1 53 and a clamping pipe 2 54 are fitted onto the outer side of the thermostatic pipe assembly 51. Water-absorbing cotton 55 is filled between the clamping pipe 1 53 and the clamping pipe 2 54. Multiple guide pipes 57 are installed at intervals on the inner side of the thermostatic pipe assembly 51. One end of each guide pipe 57 is connected to an adjacent conical ring plate 52, and the other end is connected to the water-absorbing cotton 55. The primary steam generated by the boiler is first input into the high-pressure steam turbine unit 2. The steam passes through the high-pressure turbine unit 2 and outputs secondary steam. This secondary steam then enters the low-pressure turbine unit 4 through steam pipe 5, causing both the high-pressure turbine unit 2 and the low-pressure turbine unit 4 to drive the generator 3. This reduces the waste of secondary steam and improves steam utilization. During the steam transport process within steam pipe 5, the heating function of the thermostatic tube assembly 51 effectively reduces the probability of condensation due to steam cooling. Furthermore, the multiple arranged conical ring plates 52 guide the generated condensate in a timely manner, preventing condensation. Water enters the guide pipe 57 and flows to the absorbent cotton 55 between clamp 53 and clamp 54. Utilizing the absorbent cotton 55's absorption properties, condensate fills the entire absorbent cotton 55 and forms an outer layer of contact with the external cold air, thus preventing the cold air from directly contacting the thermostatic tube assembly 51 and affecting its heating effect. By using the heating function of the thermostatic tube assembly 51 to maintain steam superheat, the probability of steam condensation is reduced from the source. Furthermore, the guiding effect of the conical ring plate 52 on the condensate and the transporting effect of the guide pipe 57 further facilitate the condensation process. Water is quickly drained into the absorbent cotton 55. The absorbent cotton 55 absorbs the condensate and forms a heat insulation layer, preventing external cold air from directly contacting the thermostatic tube assembly 51 and affecting the heating effect. This not only effectively eliminates the risk of water erosion damage to the turbine blades caused by condensate droplets, preventing serious accidents such as blade cracks, breakage, and water hammer, but also significantly extends the service life of the unit and reduces maintenance costs. Furthermore, it achieves efficient transportation and utilization of secondary steam, reduces energy loss, improves steam utilization and unit operation stability, and ensures the long-term safe and economical operation of the power generation system.
[0017] Reference Figure 2 - Figure 4 As shown in this embodiment: a water collection tank 58 is fixedly installed on the inner side of the clamping pipe 54, and a drain pipe 59 is fixedly installed at the lower end of the water collection tank 58. The water collection tank 58 is located in the middle directly below the steam pipe 5, which can centrally collect and directionally discharge the condensate that seeps out after the absorbent cotton 55 is saturated with water. This avoids the condensate from accumulating inside and wetting the insulation structure, affecting the heating and insulation effect of the constant temperature tube group 51. At the same time, it prevents the accumulated water from flowing back into the steam pipe 5 and mixing with the steam to impact the turbine blades, further eliminating safety hazards such as water erosion and water hammer, reducing the risk of unit failure. Moreover, the centralized drainage design facilitates the collection and subsequent treatment of condensate by operation and maintenance personnel, improving the reliability of equipment operation and the convenience of maintenance.
[0018] Reference Figure 2 - Figure 4 As shown in this embodiment: the thermostatic tube assembly 51 includes a heat-conducting ring tube 511 fixedly sleeved on the outside of the conical ring plate 52. An insulating sleeve 512 is fixedly sleeved on the outside of the heat-conducting ring tube 511. An electric heating wire 513 is wrapped inside the insulating sleeve 512. The electric heating wire 513 abuts against the heat-conducting ring tube 511. By using the electric heating wire 513 to generate heat and uniformly transferring heat through the heat-conducting ring tube 511, the inside of the steam pipe 5 can be precisely heated and the steam inside the pipe can be continuously kept in a superheated state, which greatly reduces the probability of steam condensation from the source. At the same time, the insulating sleeve 512 can effectively isolate the electric heating wire 513 from the external structure, avoid the risk of leakage, and ensure the safe operation of the equipment.
[0019] Reference Figure 2 - Figure 4 As shown in this embodiment, multiple heating wires 513 are arranged circumferentially around the heat-conducting ring tube 511. An insulation tube 514 is fixedly sleeved on the outside of the insulating sleeve 512, and the insulation tube 514 is coated with a tin foil layer. This circumferential arrangement of the multiple heating wires 513 around the heat-conducting ring tube 511 ensures uniform heat transfer along the circumference of the heat-conducting ring tube 511, preventing steam condensation caused by uneven temperature distribution in localized areas within the steam pipe 5, and further improving the accuracy of constant temperature control of the steam within the pipe. Simultaneously, this arrangement fully utilizes the heating area of the heating wires 513, improving heating efficiency and reducing energy consumption.
[0020] Reference Figure 2 - Figure 4 As shown in this embodiment: there is a distance between the insulation tube 514 and the clamp tube 53, forming an annular cavity 56. This cavity can act as a heat insulation buffer layer, effectively blocking the heat transfer from external cold air to the thermostatic tube assembly 51, reducing the heat loss of the thermostatic tube assembly 51, and thus reducing the energy consumption of the heating wire 513. At the same time, the annular cavity 56 can prevent the clamp tube 53 from being directly affected by external temperature fluctuations, ensuring that the steam in the steam pipe 5 is always in a stable superheated state, further reducing the probability of steam condensation.
[0021] Working principle: First, the primary steam generated by the boiler is input into the high-pressure turbine unit 2, and after passing through the high-pressure turbine unit 2, secondary steam is output. The secondary steam is then input into the low-pressure turbine unit 4 through the steam pipe 5, causing the high-pressure turbine unit 2 and the low-pressure turbine unit 4 to drive the generator 3 together, reducing the waste of secondary steam and thus improving the steam utilization rate. During the steam transportation process in the steam pipe 5, the heating function of the thermostatic tube group 51 can effectively reduce the probability of condensation when the steam encounters cold air. In addition, the multiple conical ring plates 52 arranged in a timely manner can guide the condensate in time, so that the condensate enters the guide pipe 57 and is discharged to the water-absorbing cotton 55 between the first clamp 53 and the second clamp 54. By utilizing the absorption characteristics of the water-absorbing cotton 55, the condensate fills the entire water-absorbing cotton 55 and forms an outer contact with the cold air outside. This design avoids direct contact between cold air and the thermostat tube assembly 51, preventing it from affecting the heating effect of the thermostat tube assembly 51. By utilizing the heating function of the thermostat tube assembly 51 to maintain steam superheat, the probability of steam condensation is reduced from the source. Furthermore, the condensate is quickly discharged into the absorbent cotton 55 through the guiding effect of the conical ring plate 52 and the conveying effect of the guide pipe 57. The heat insulation layer formed by the absorbent cotton 55 after absorbing the condensate prevents external cold air from directly contacting the thermostat tube assembly 51 and affecting the heating effect. This not only effectively eliminates the risk of water erosion damage to the turbine blades caused by condensate droplets, preventing the occurrence of serious accidents such as blade cracks, fractures, and water hammer, but also significantly extends the service life of the unit and reduces maintenance costs. It also achieves efficient transportation and utilization of secondary steam, reduces energy loss, improves steam utilization and unit operation stability, and ensures the long-term safe and economical operation of the power generation system.
[0022] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A generator turbine designed to prevent steam condensation, characterized in that, The system includes a base, on which a high-pressure steam turbine unit and a low-pressure steam turbine unit are fixedly installed on both sides of the upper end, respectively. The high-pressure steam turbine unit is connected to an external boiler. A generator is fixedly installed in the middle of the upper end of the base. The output ends of both the high-pressure steam turbine unit and the low-pressure steam turbine unit are connected to the generator. A steam pipe is fixedly installed on the upper end of the generator. The two ends of the steam pipe are connected to the high-pressure steam turbine unit and the low-pressure steam turbine unit, respectively. The steam pipe includes a thermostatic pipe assembly and multiple conical ring plates fixedly connected to its inner side. The multiple conical ring plates are arranged in an abutting manner. A clamp tube one and a clamp tube two are sleeved on the outer side of the thermostatic pipe assembly. Water-absorbing cotton is filled between the clamp tube one and the clamp tube two. Multiple sets of guide tubes are installed at intervals on the inner side of the thermostatic pipe assembly. One end of the guide tube is connected to the adjacent conical ring plate, and the other end of the guide tube is connected to the water-absorbing cotton.
2. The anti-steam condensation generator turbine according to claim 1, characterized in that: A water collection tank is fixedly installed on the inner side of the second clamp pipe, and a drain pipe is fixedly installed at the lower end of the water collection tank. The water collection tank is located in the middle directly below the steam pipe.
3. The anti-steam condensation generator turbine according to claim 1, characterized in that: The thermostatic tube assembly includes a heat-conducting ring tube fixedly sleeved on the outside of the conical ring plate. An insulating sleeve is fixedly sleeved on the outside of the heat-conducting ring tube, and an electric heating wire is wrapped inside the insulating sleeve. The electric heating wire abuts against the heat-conducting ring tube.
4. A generator turbine with anti-steam condensation protection according to claim 3, characterized in that: The heating wires are provided in multiple ways, and the multiple heating wires are arranged in a circular interval with the heat-conducting ring tube as the axis.
5. A generator turbine with anti-steam condensation protection according to claim 4, characterized in that: An insulating tube is fixedly fitted on the outer side of the insulating sleeve, and the insulating tube is coated with a tin foil layer.
6. A generator turbine with anti-steam condensation protection according to claim 5, characterized in that: There is a distance between the insulation tube and the clamp tube, and an annular cavity is formed through this distance.