High-stability thermal steam compressor

Abstract

The utility model discloses a high-stability heating power steam compressor which comprises a first heater, a second heater, a third heater and a steam turbine. The steam turbine comprises a shell, a first pressure area, a second pressure area and a third pressure area are formed in the shell, a driving shaft is arranged in the shell, and one end of the driving shaft extends out of the shell and is connected with a generator; a water outlet of the first heater is connected with the front end of the first pressure area, the rear end of the first pressure area is connected with a water inlet of the second heater, a water outlet of the second heater is connected with the front end of the second pressure area, the rear end of the second pressure area is connected with a water inlet of the third heater, and a water outlet of the third heater is connected with the front end of the third pressure area. The third pressure area is connected with a water inlet of the first heater; a first bypass pipeline is arranged between the first pipeline and the second pipeline; a second bypass pipeline is arranged between the third pipeline and the fourth pipeline; and a third bypass pipeline is arranged between the fifth pipeline and the sixth pipeline. The power generation device has the advantage of high power generation stability.

Description

Technical Field

[0001] This utility model belongs to the field of thermal steam compressors, and in particular relates to a high-stability thermal steam compressor. Background Technology

[0002] In waste-to-energy plants, the heat generated from waste incineration can be converted into electrical energy using a thermal compressor.

[0003] The structure of existing thermal compressors, such as Figure 4 As shown, the system includes a first heater, a second heater, a third heater, and a steam turbine. The steam turbine includes a cylindrical casing with two baffles inside, forming a first pressure zone, a second pressure zone, and a third pressure zone axially within the casing. Inspection doors are provided on the side walls of each of the first, second, and third pressure zones. Impeller assemblies are located within each of the first, second, and third pressure zones. A drive shaft, passing through the baffles and fixed to all impeller assemblies, is located inside the casing. One end of the drive shaft extends out of the casing and is connected to a generator. The first, second, and third heaters are all located within the incinerator. The outlet of the first heater is connected to the front end of the first pressure zone via a first pipe. The rear end of the first pressure zone is connected to the inlet of the second heater via a second pipe. The outlet of the second heater is connected to the front end of the second pressure zone via a third pipe. The rear end of the second pressure zone is connected to the inlet of the third heater via a fourth pipe. The outlet of the third heater is connected to the front end of the third pressure zone via a fifth pipe. A condenser is located at the rear end of the third pressure zone. The condenser is connected to the inlet of the first heater via a sixth pipe, and a makeup water pipe is connected to the sixth pipe.

[0004] The working principle of existing thermal steam compressors is as follows: Steam in the first heater enters the first pressure zone to do work, then returns to the second heater for reheating, enters the second pressure zone to do work again, returns to the third heater for further heating, enters the third pressure zone to do work again, and finally enters the condenser to become hot water. The hot water then returns to the first heater, and this cycle continues continuously, improving the utilization rate of thermal energy. Water lost during this process is replenished through a water supply pipe. The steam then drives the impeller assembly to rotate in the pressure zone, and the impeller assembly drives the generator to produce electricity via a drive shaft.

[0005] In existing thermal compressors, when an impeller assembly in any pressure zone fails, the incinerator's heat production needs to be stopped, and all three impeller assemblies must stop rotating simultaneously before the corresponding maintenance door can be used to access the corresponding pressure zone to repair the faulty impeller assembly. At this time, the generator is not working, which may cause large load fluctuations in the power grid, resulting in low power generation stability of the thermal compressor. Utility Model Content

[0006] The purpose of this invention is to provide a highly stable thermal compressor. This invention has the advantage of high power generation stability.

[0007] The technical solution of this utility model is: a high-stability thermal compressor, comprising a first heater, a second heater, a third heater, and a turbine;

[0008] The steam turbine includes a casing, and two partitions are provided inside the casing to form a first pressure zone, a second pressure zone, and a third pressure zone in the axial direction inside the casing. Inspection doors are provided on the side walls of the first pressure zone, the second pressure zone, and the third pressure zone. Impeller assemblies are provided in the first pressure zone, the second pressure zone, and the third pressure zone. A drive shaft is provided inside the casing, and one end of the drive shaft extends out of the casing and is connected to a generator.

[0009] The outlet of the first heater is connected to the front end of the first pressure zone through the first pipe. The rear end of the first pressure zone is connected to the inlet of the second heater through the second pipe. The outlet of the second heater is connected to the front end of the second pressure zone through the third pipe. The rear end of the second pressure zone is connected to the inlet of the third heater through the fourth pipe. The outlet of the third heater is connected to the front end of the third pressure zone through the fifth pipe. The third pressure zone is connected to the inlet of the first heater through the sixth pipe. A water supply pipe is connected to the sixth pipe. A condenser is installed on the sixth pipe.

[0010] A first bypass pipe is provided between the first pipe and the second pipe, and a first three-way valve is provided at the connection between the first bypass pipe and the first pipe;

[0011] A second bypass pipe is provided between the third pipe and the fourth pipe, and a second three-way valve is provided at the connection between the second bypass pipe and the third pipe;

[0012] A third bypass pipe is provided between the fifth and sixth pipes, and a third three-way valve is provided at the connection between the third bypass pipe and the fifth pipe.

[0013] In the aforementioned high-stability thermal compressor, the impeller assembly is rotatably connected to the drive shaft, and a brake and a linkage are respectively provided at both ends of the impeller assembly along its axial direction.

[0014] In the aforementioned high-stability thermal compressor, the impeller assembly includes a hollow shaft through which the drive shaft passes, and multiple blades are fixed on the outer circumferential surface of the hollow shaft.

[0015] In the aforementioned high-stability thermal compressor, the brake includes an annular chassis, which is fixed to a partition or housing. A friction disc is provided on one side of the chassis through which the drive shaft passes, and a brake disc is provided on one side of the friction disc, which is fixed to a hollow shaft. The chassis has multiple first blind holes, some of which contain first electromagnets, and others contain first compression springs that connect to the friction discs.

[0016] In the aforementioned high-stability thermal compressor, the linkage includes a base plate fixed to the drive shaft. A first relay plate is provided on one side of the base plate, through which the drive shaft passes. A second relay plate is provided on one side of the first relay plate, fixed to a hollow shaft. A second blind hole is provided on the base plate. A second electromagnet is provided in a portion of the second blind hole, and a second compression spring connected to the first relay plate is provided in another portion of the second blind hole.

[0017] In the aforementioned high-stability thermoelectric compressor, the mating surfaces of the first and second relay discs are provided with toothed structures.

[0018] In the aforementioned high-stability thermal compressor, a one-way valve is installed on the water supply pipeline.

[0019] Compared with existing technologies, this invention, based on existing thermal compressors, incorporates a bypass pipe between the heater and the pressure zones. When an impeller assembly in any pressure zone fails, the steam that would normally enter that pressure zone can be bypassed and flow into the next stage, lowering the temperature in that zone and facilitating maintenance. Simultaneously, the connection between the impeller assembly and the drive shaft is changed from a fixed connection to a rotating connection. Brakes and linkages are installed on both sides of the impeller assembly. Under normal conditions, the impeller assembly establishes a rigid frictional connection with the drive shaft via the linkage. Steam passing through the impeller assembly drives the drive shaft to rotate, thereby powering the generator. When an impeller assembly in a pressure zone fails, steam continues to flow through the remaining pressure zones, allowing the impeller assemblies in those zones to continue operating and ensuring continuous power generation. For the impeller assembly in the failed zone, the rigid connection between the linkage and the drive shaft is released, and the brake completely stops the impeller assembly, allowing for maintenance. Because the generator continues to generate electricity while the failed impeller assembly is being maintained, the impact on the power grid is minimal, resulting in high power generation stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the brake.

[0022] Figure 3 This is a schematic diagram of the linkage.

[0023] Figure 4 This is a schematic diagram of an existing thermal compressor.

[0024] The labels in the attached diagram are as follows: 1-First heater, 2-Second heater, 3-Third heater, 4-Housing, 5-Baffle, 6-First pressure zone, 7-Second pressure zone, 8-Third pressure zone, 9-Drive shaft, 10-Generator, 11-First pipe, 12-Second pipe, 13-Third pipe, 14-Fourth pipe, 15-Fifth pipe, 16-Sixth pipe, 17-Water supply pipe, 18-First bypass pipe, 19-First three-way valve, 20-Second bypass pipe, 21- 22-Third bypass pipe, 23-Third three-way valve, 24-Brake, 25-Linkage device, 26-Hollow shaft, 27-Blade, 28-Chassis, 29-Friction disc, 30-First blind hole, 31-First electromagnet, 32-First compression spring, 33-Base plate, 34-First relay disc, 35-Second relay disc, 36-Second blind hole, 37-Second electromagnet, 38-Second compression spring, 39-One-way valve, 40-Incinerator, 41-Condenser, 42-Brake disc. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0026] Example: A high-stability thermal compressor, improved from an existing thermal compressor, such as... Figure 1 As shown, it includes a first heater 1, a second heater 2, a third heater 3, and a steam turbine. The first heater 1, the second heater 2, and the third heater 3 are all heated within the incinerator 40.

[0027] The steam turbine includes a cylindrical casing 4, inside which are two partitions 5, forming a first pressure zone 6, a second pressure zone 7, and a third pressure zone 8 axially. Inspection doors are provided on the side walls of each of the three pressure zones. Impeller assemblies are located within each of these zones. A drive shaft 9 is located inside the casing 4, with one end extending out of the casing 4 and connected to a generator 10. The outlet of the first heater 1 is connected to the front end of the first pressure zone 6 via a first pipe 11. The rear end of the first heater is connected to the inlet of the second heater 2 via the second pipe 12. The outlet of the second heater 2 is connected to the front end of the second pressure zone 7 via the third pipe 13. The rear end of the second pressure zone 7 is connected to the inlet of the third heater 3 via the fourth pipe 14. The outlet of the third heater 3 is connected to the front end of the third pressure zone 8 via the fifth pipe 15. The third pressure zone 8 is connected to the inlet of the first heater 1 via the sixth pipe 16. A water supply pipe 17 is connected to the sixth pipe 16, and a one-way valve 39 is installed on the water supply pipe 17. A condenser 41 is installed on the sixth pipe 16. The improvements are as follows:

[0028] A first bypass pipe 18 is provided between the first pipe 11 and the second pipe 12, and a first three-way valve 19 is provided at the connection between the first bypass pipe 18 and the first pipe 11.

[0029] A second bypass pipe 20 is provided between the third pipe 13 and the fourth pipe 14, and a second three-way valve 21 is provided at the connection between the second bypass pipe 20 and the third pipe 13;

[0030] A third bypass pipe 22 is provided between the fifth pipe 15 and the sixth pipe 16, and a third three-way valve 23 is provided at the connection between the third bypass pipe 22 and the fifth pipe 15.

[0031] The impeller assembly is rotatably connected to the drive shaft 9, and a brake 24 and a linkage 25 are respectively provided at both ends of the impeller assembly along its axial direction. The impeller assembly includes a hollow shaft 26 through which the drive shaft 9 passes, and the drive shaft 9 is connected to the hollow shaft 26 by a bearing. Multiple blades 27 are fixed on the outer circumferential surface of the hollow shaft 26.

[0032] like Figure 2 As shown, the brake 24 includes an annular chassis 28, which is fixed to the partition 5 or the housing 4. A friction disc 29, through which the drive shaft 9 passes, is located on one side of the chassis 28. A brake disc 42, fixed to the hollow shaft 26, is located on one side of the friction disc 29. The chassis 28 has multiple first blind holes 30. A portion of the first blind holes 30 contains a first electromagnet 31, and another portion contains a first compression spring 32 connecting the friction disc 29. Preferably, the friction disc 29 has a guide post slidably connected to the chassis 28. All the first electromagnets 31 are connected in parallel. Under normal conditions, when the first electromagnets 31 are energized, the friction disc 29 moves to the left, the brake 24 does not contact the brake disc 42, and the impeller assembly can rotate. During maintenance, when the first electromagnets 31 are de-energized, the friction disc 29 moves to the right and contacts the brake disc 42 under the action of the first compression spring 32, preventing the impeller assembly from rotating with the drive shaft 9. The preload of the first compression spring 32 is only required to keep the impeller assembly from rotating with the drive shaft 9.

[0033] like Figure 3As shown, the linkage 25 includes a base plate 33 fixed to the drive shaft 9. A first relay plate 34, through which the drive shaft 9 passes, is provided on one side of the base plate 33. The first relay plate 34 is slidably connected to the drive shaft 9, for example, by providing a groove on the drive shaft 9. A slider cooperating with the groove is provided on the inner hole of the first relay plate 34. A second relay plate 35, fixed to a hollow shaft 26, is provided on one side of the first relay plate 34. A second blind hole 36 is provided on the base plate 33. A second electromagnet 37 is provided in one part of the second blind hole 36, and a second compression spring 38 connecting the first relay plate 34 is provided in another part of the second blind hole 36. The mating surfaces of the first relay plate 34 and the second relay plate 35 have a straight tooth structure to increase the friction between them. Under normal conditions, the second electromagnet 37 is de-energized. Under the action of the second compression spring 38, the first relay plate 34 and the second relay plate 35 are tightly connected. The driving force generated by the steam-driven impeller assembly can reach the generator through the drive shaft 9. During maintenance, the second electromagnet 37 is energized, the first relay plate 34 moves to the right, and the drive shaft 9 rotates without driving the impeller assembly to rotate, allowing workers to enter for maintenance.

[0034] To withstand high-heat environments, the first electromagnet 31 and the second electromagnet 37 should be produced using a vacuum potting process, with special Class C insulation materials. This type of electromagnet is manufactured by Yueyang Zhongke Electric, Nantong Xinci Machinery, and Siemens.

[0035] The working principle of this embodiment is the same as that of existing thermal compressors. The difference lies in the operating method when any impeller assembly fails and needs maintenance. The incinerator continues to operate, and the generator continues to generate electricity. The following example illustrates the operation of an impeller assembly failure within the first pressure zone 6:

[0036] The first three-way valve 19 connects the first pipe 11 to the first bypass pipe 18, preventing the steam generated by the first heater 1 from passing through the first pressure zone 6. Only the second pressure zone 7 and the third pressure zone 8 retain steam flow, causing the impeller assembly in the second pressure zone 7 and the third pressure zone 8 to drive the drive shaft 8 to generate electricity for the generator 10. The temperature in the first pressure zone 6 drops, so personnel entering will not be burned.

[0037] When the linkage 25 in the first pressure zone 6 is energized, the first relay plate 34 and the second relay plate 35 separate, and the rigid connection between the impeller assembly in the first pressure zone 6 and the drive shaft 9 is broken. The power obtained by the impeller assembly from the drive shaft 9 drops to near zero, and it rotates slowly with minimal friction. For safety reasons, each of the second electromagnets 37 in the linkage 25 should be powered by a different power source to ensure that even if a small number of second electromagnets 37 are accidentally de-energized, there is still sufficient magnetic force to overcome the elastic force of the second compression spring, preventing the first relay plate 34 and the second relay plate 35 from accidentally engaging and preventing the impeller assembly from re-establishing a rigid connection with the drive shaft 9 and starting up rapidly again.

[0038] When the brake 24 is de-energized, the friction disc 29 contacts the brake disc 42, keeping the impeller assembly stationary. Workers can then inspect the impeller assembly through the access door.

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A high-stability thermal pressure steam engine, comprising a first heater (1), a second heater (2), a third heater (3) and a steam turbine; The steam turbine comprises a shell (4), two partitions (5) are arranged in the shell (4), so that the inside of the shell (4) is divided into a first pressure area (6), a second pressure area (7) and a third pressure area (8) in the axial direction, the side walls of the first pressure area (6), the second pressure area (7) and the third pressure area (8) are each provided with an access door, the first pressure area (6), the second pressure area (7) and the third pressure area (8) are each provided with an impeller assembly, a driving shaft (9) is arranged in the shell (4), one end of the driving shaft (9) extends out of the shell (4) and is connected with a generator (10); The water outlet of the first heater (1) is connected with the front end of the first pressure area (6) through a first pipeline (11), the rear end of the first pressure area (6) is connected with the water inlet of the second heater (2) through a second pipeline (12), the water outlet of the second heater (2) is connected with the front end of the second pressure area (7) through a third pipeline (13), the rear end of the second pressure area (7) is connected with the water inlet of the third heater (3) through a fourth pipeline (14), the water outlet of the third heater (3) is connected with the front end of the third pressure area (8) through a fifth pipeline (15), the third pressure area (8) is connected with the water inlet of the first heater (1) through a sixth pipeline (16), a water supplement pipeline (17) is connected with the sixth pipeline (16), and a condenser (41) is arranged on the sixth pipeline (16); characterized in that A first bypass pipeline (18) is arranged between the first pipeline (11) and the second pipeline (12), and a first three-way valve (19) is arranged at the connection position of the first bypass pipeline (18) and the first pipeline (11); A second bypass pipeline (20) is arranged between the third pipeline (13) and the fourth pipeline (14), and a second three-way valve (21) is arranged at the connection position of the second bypass pipeline (20) and the third pipeline (13); A third bypass pipeline (22) is arranged between the fifth pipeline (15) and the sixth pipeline (16), and a third three-way valve (23) is arranged at the connection position of the third bypass pipeline (22) and the fifth pipeline (15).

2. The high-stability thermal pressure steam generator according to claim 1, characterized in that: The impeller assembly is rotationally connected with the driving shaft (9), and the axial both ends of the impeller assembly are respectively provided with a brake (24) and a linkage (25).

3. The high-stability steam power engine of claim 2, wherein: The impeller assembly comprises a hollow shaft (26) through which the driving shaft (9) passes, and a plurality of blades (27) are fixed on the outer circumferential surface of the hollow shaft (26).

4. The high-stability steam power engine of claim 3, wherein: The brake (24) comprises an annular base plate (28), the base plate (28) is fixed with the partition (5) or the shell (4), one side of the base plate (28) is provided with a friction disc (29) through which the driving shaft (9) passes, one side of the friction disc (29) is provided with a brake disc (42) fixed with the hollow shaft (26), a plurality of first blind holes (30) are arranged on the base plate (28), a first electromagnet (31) is arranged in a part of the first blind holes (30), and a first compression spring (32) connected with the friction disc (29) is arranged in another part of the first blind holes (30).

5. The high-stability steam power engine of claim 3, wherein: The linkage (25) comprises a bottom plate (33) fixed with the driving shaft (9), one side of the bottom plate (33) is provided with a first force disk (34) through the driving shaft (9), one side of the first force disk (34) is provided with a second force disk (35) fixed with the hollow shaft (26), the bottom plate (33) is provided with a second blind hole (36), a part of the second blind hole (36) is provided with a second electromagnet (37), and the other part of the second blind hole (36) is provided with a second compression spring (38) connected with the first force disk (34).

6. The high-stability steam power engine of claim 5, wherein: The combination surface of the first force disk (34) and the second force disk (35) is provided with a tooth structure.

7. The high-stability steam power engine of claim 1, wherein: The water supplement pipeline (17) is provided with a one-way valve (39).

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