MW-level multi-skid assembled ORC (organic Rankine cycle) generator set

Abstract

The utility model discloses an MW-level multi-skid assembled ORC (organic Rankine cycle) generator set which comprises a working medium pump skid, a preheater evaporator skid, a turbine condenser skid and a turbine connecting pipeline, the working medium pump skid and the preheater evaporator skid are arranged side by side and are positioned and connected through the mounting positioning plate, the turbine condenser skid is fixed above the working medium pump skid through a saddle, and the turbine condenser skid and the preheater evaporator skid are connected through a turbine connecting pipeline. According to the utility model, a skid splicing mode is adopted for layout, the structure is compact, and the occupied area is small; the prying blocks can be disassembled into a plurality of independent prying blocks for transportation; rapid assembly can be realized, and integral test and reassembly are realized; the pipeline does not need to be cut and welded on site, so that the installation quality of the unit is ensured, and the site construction time and the installation cost are reduced; testing can be carried out in advance, a unit system can be ensured to be normal, and field debugging workload is reduced.

Description

Technical Field

[0001] The utility model relates to the field of organic Rankine cycle power generation equipment, in particular to a MW-level multi-skid assembled ORC generator set. Background Art

[0002] Organic Rankine cycle (ORC) power generation technology utilizes the low boiling point of organic working fluids to obtain higher pressure working fluid vapor at a lower temperature, thereby driving the expander to generate work and realize the utilization of medium and low temperature waste heat resources.

[0003] The ORC system mainly includes an evaporator for evaporating the working fluid, a condenser for condensing the working fluid, a turbine expander for doing work, a working fluid pump (12) for providing circulation power, and a matching electronic control system. The organic working fluid is heated by a heat source in the evaporator to become a high-pressure working fluid vapor, and then enters the turbine expander to drive the turbine to do work and drive the generator to generate electricity, and then enters the condenser to condense into a liquid working fluid, and is pressurized by the working fluid pump and enters the evaporator again to form a cycle, such as Figure 1 shown.

[0004] At present, affected by the size of unit components and installation location, most ORC generator sets with a single unit power generation of 1MW or more are split structures. Split-structured ORC units often have loose structures and occupy a large area, and the various components of the unit usually need to be transported to the site separately, and then piping, welding and other work can be carried out to complete the integration and assembly of the unit. The on-site construction environment is relatively poor. Rainy and snowy weather and outdoor work may reduce the installation quality of the unit. At the same time, the equipment and labor costs required for on-site construction will be higher than those for internal assembly in the factory. Moreover, on-site assembly means that it is impossible to inspect and debug the entire system before the unit leaves the factory. All debugging work can only be carried out after on-site assembly. The risk of on-site failures cannot be controlled, which easily increases manpower investment and debugging time. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the split-type generator set has a loose structure, occupies a large area, and the various components of the unit usually need to be transported separately to the site before piping, welding and other work can be carried out. It is greatly affected by environmental factors, and the risk of on-site failure cannot be controlled, which easily increases manpower investment and debugging time. To address this shortcoming, a MW-level multi-skid assembled ORC generator set is proposed.

[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0007] A MW-class multi-skid assembled ORC generator set comprises a working fluid pump skid, a preheater evaporator skid, a turbine condenser skid and a turbine connecting pipeline; the working fluid pump skid and the preheater evaporator skid are arranged side by side and are positioned and connected by installing a positioning plate, the turbine condenser skid is fixed above the working fluid pump skid through a saddle, the turbine condenser skid and the preheater evaporator skid are connected through a turbine connecting pipeline, a second expansion joint and a third expansion joint are arranged between the turbine condenser skid and the turbine connecting pipeline, and a first isolating butterfly valve is arranged between the preheater evaporator skid and the turbine connecting pipeline.

[0008] As a further preferred embodiment of the present invention, the working fluid pump skid includes a first supporting frame and a working fluid pump; the working fluid pump is installed in the first supporting frame, and the first pipeline and the second pipeline are respectively connected on both sides of the working fluid pump, and the first pipeline is provided with a second isolating butterfly valve; the second pipeline is provided with a first stop check valve, a bypass pipeline, a first regulating valve and a first interface, and the other end of the second pipeline is connected to a first expander, and is connected to the preheater evaporator skid through a first expansion joint.

[0009] As a further preferred embodiment of the present invention, the first support frame includes a first bottom frame, a plurality of first cross beams and a plurality of bottom beams, a first mounting hole is arranged on the side of the cross beam, and a first positioning hole is arranged on the side of the bottom beam for connecting with the mounting positioning plate.

[0010] As a further preferred embodiment of the present invention, a filter pipeline is provided between the first pipeline and the second isolating butterfly valve, and the filter pipeline is connected to the first pipeline via a third isolating butterfly valve, and a first filter is provided on the filter pipeline.

[0011] As a further preferred embodiment of the utility model, the turbine condenser skid includes a condenser and a turbine generator, the condenser is fixed above the saddle, a second interface is provided below the condenser, and is connected to the second isolating butterfly valve of the working fluid pump skid; the turbine generator is fixed above the condenser through a support plate, and an air intake port, an exhaust port, a first ejection port, a first cooling port, a second cooling port and a first oil return port are provided on the turbine generator, the exhaust port is connected to the condenser through a third pipeline, and an elbow, a third interface and a fourth isolating butterfly valve are provided on the third pipeline.

[0012] As a further preferred embodiment of the present invention, the preheater evaporator skid comprises a second support frame, an evaporator and a preheater, the evaporator is fixed to the second support frame through a saddle, the preheater is fixed to the second support frame through a support plate, the preheater and the evaporator are connected through a fourth pipeline; the preheater is provided with a fourth interface, and is connected to the working fluid pump through a first expansion joint; the evaporator is provided with a second oil return interface and a fifth interface, the fifth interface is provided with a second ejection interface,

[0013] The second supporting frame includes a second bottom frame and a plurality of second cross beams. Second positioning holes are arranged on the sides of the second cross beams for connecting with the mounting positioning plates.

[0014] As a further preferred embodiment of the present invention, the turbine connecting pipeline includes a turbine inlet pipeline and a turbine bypass pipeline, a second filter is provided at one end of the turbine inlet pipeline, and the other end is connected to the air intake on the turbine generator through a third expansion joint, and a turbine inlet control valve is provided on the turbine inlet pipeline; the turbine bypass pipeline is connected to the second filter, and the turbine bypass pipeline includes a first branch and a second branch, the first branch is connected to the fifth interface on the evaporator through a first isolating butterfly valve at one end away from the second filter, a turbine bypass control valve is provided on the second branch, and a sixth interface is provided at one end of the second branch away from the second filter, and the sixth interface is connected to the third interface on the third pipeline through a second expansion joint.

[0015] As a further preferred embodiment of the present invention, a throttling orifice plate is provided in the second expansion joint.

[0016] As a further preferred embodiment of the utility model, an injection pipeline is arranged between the first injection interface and the second injection interface, and a third regulating valve is arranged on the injection pipeline; an oil return pipeline is arranged between the first oil return interface and the second oil return interface, and a second regulating valve is arranged on the oil return pipeline; a cooling pipeline is arranged between the first cooling interface, the second cooling interface and the first interface, a fourth regulating valve is arranged on one side of the first cooling interface, and a fifth regulating valve is arranged on one side of the second cooling interface.

[0017] The MW-class multi-skid assembled ORC generator set proposed in the utility model has the following beneficial effects compared with the prior art:

[0018] 1. The utility model adopts the pry block assembly method for layout, with compact structure and small footprint;

[0019] 2. It is assembled by skids and can be disassembled into multiple separate skids for transportation; it can also be assembled quickly to achieve overall testing and reassembly;

[0020] 3. The skid assembly eliminates the need for on-site cutting and welding of pipes, which ensures the installation quality of the unit while reducing on-site construction time and installation costs;

[0021] 4. The skid assembly can be used to test in advance, which can ensure the normal operation of the unit system and reduce the workload of on-site debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a typical roadmap of the Organic Rankine Cycle;

[0023] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the working fluid pump skid;

[0025] Figure 4 It is a schematic diagram of the structure of the turbine condenser skid;

[0026] Figure 5 It is a schematic diagram of the structure of the preheater evaporator skid;

[0027] Figure 6 It is a schematic diagram of the structure of the turbine connecting pipeline;

[0028] Figure 7 It is a schematic diagram of the system function pipeline of the utility model.

[0029] Meanings of the reference numerals in the figure: 1. working fluid pump skid, 11. first bottom frame, 12. working fluid pump, 13. first filter, 14. second blocking butterfly valve, 15. third blocking butterfly valve, 16. first stop check valve, 17. bypass pipeline, 18. first regulating valve, 19. first interface, 111. first crossbeam, 1111. first mounting hole, 112. bottom beam, 1121. first positioning hole;

[0030] 2. Turbine condenser skid, 21. Turbine generator, 22. Condenser, 23. Third pipeline, 24. Fourth isolating butterfly valve, 211. Exhaust port, 212. Intake port, 213. First oil return port, 214. First cooling port, 215. Second cooling port, 216. First ejector port, 221. Support plate, 222. Saddle, 223. Second port, 231. Elbow, 232. Third port;

[0031] 3. preheater evaporator skid, 31. preheater, 32. second bottom frame, 33. evaporator, 311. fourth interface, 321. second crossbeam, 3211. second positioning hole, 331. fifth interface, 332. second oil return interface, 333. second ejector interface;

[0032] 4. turbine connecting pipeline, 41. turbine inlet pipeline, 42. turbine bypass pipeline, 411. turbine inlet control valve, 412. second filter, 421. turbine bypass control valve, 422. sixth interface;

[0033] 5. Install the positioning plate, 6. The first expansion joint, 7. The second expansion joint, 8. The third expansion joint, 9. The first isolation butterfly valve, 10. The throttling orifice plate, 1101. The second regulating valve, 1201. The third regulating valve, 1301. The fourth regulating valve, 1302. The fifth regulating valve. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 2 As shown, a MW-class multi-skid assembled ORC generator set includes a working fluid pump skid 1, a preheater evaporator skid 3, a turbine condenser skid 2 and a turbine connecting pipeline 4; the working fluid pump skid 1 and the preheater evaporator skid 3 are arranged side by side and are positioned and connected by installing a positioning plate 5, the turbine condenser skid 2 is fixed above the working fluid pump skid 1 through a saddle 222, the turbine condenser skid 2 and the preheater evaporator skid 3 are connected through the turbine connecting pipeline 4, a second expansion joint 7 and a third expansion joint 8 are arranged between the turbine condenser skid 2 and the turbine connecting pipeline 4, and a first isolating butterfly valve 9 is arranged between the preheater evaporator skid 3 and the turbine connecting pipeline 4.

[0036] like Figure 3 As shown, the working fluid pump skid 1 includes a first supporting frame and a working fluid pump 12; the working fluid pump 12 is installed in the first supporting frame, and the first pipeline and the second pipeline are connected on both sides of the working fluid pump 12, and the first pipeline is provided with a second isolating butterfly valve 14; the second pipeline is provided with a first stop check valve 16, a bypass pipeline 17, a first regulating valve 18 and a first interface 19, the other end of the second pipeline is connected to a first expander, and is connected to the preheater evaporator skid 3 through a first expansion joint 6, a filter pipeline is provided between the first pipeline and the second isolating butterfly valve 14, and the filter pipeline is connected to the first pipeline through a third isolating butterfly valve 15, and the filter pipeline is provided with a first filter 13.

[0037] The first supporting frame includes a first bottom frame 11 , a plurality of first cross beams 111 and a plurality of bottom beams 112 . The side surfaces of the cross beams are provided with first mounting holes 1111 , and the side surfaces of the bottom beams 112 are provided with first positioning holes 1121 for connecting with the mounting positioning plates 5 .

[0038] like Figure 4As shown, the turbine condenser skid 2 includes a condenser 22 and a turbine generator 21, the condenser 22 is fixed above the saddle 222, a second interface 223 is provided below the condenser 22, and is connected to the second isolating butterfly valve 14 of the working fluid pump skid 1; the turbine generator 21 is fixed above the condenser 22 through a support plate 221, and an air intake port 212, an exhaust port 211, a first ejection port 216, a first cooling port 214, a second cooling port 215 and a first oil return port 213 are provided on the turbine generator 21, the exhaust port 211 is connected to the condenser 22 through a third pipeline 23, and an elbow 231, a third interface 232 and a fourth isolating butterfly valve 24 are provided on the third pipeline 23.

[0039] like Figure 5 As shown, the preheater evaporator skid 3 includes a second support frame, an evaporator 33 and a preheater 31, the evaporator 33 is fixed to the second support frame through a saddle 222, the preheater 31 is fixed to the second support frame through a support plate 221, and the preheater 31 and the evaporator 33 are connected through a fourth pipeline; a fourth interface 311 is provided on the preheater 31, and is connected to the working fluid pump 12 through a first expansion joint 6; a second oil return interface 332 and a fifth interface 331 are provided on the evaporator 33, a second ejection interface 333 is provided on the fifth interface 331, and the second support frame includes a second bottom frame 32 and a plurality of second beams 321, and a second positioning hole 3211 is provided on the side of the second beam 321 for connecting with the mounting positioning plate 5.

[0040] like Figure 6 As shown, the turbine connecting pipeline 4 includes a turbine inlet pipeline 41 and a turbine bypass pipeline 42. The turbine inlet pipeline 41 is provided with a second filter 412 at one end, and the other end is connected to the air intake port 212 on the turbine generator 21 through a third expansion joint 8. The turbine inlet pipeline 41 is provided with a turbine inlet control valve 411; the turbine bypass pipeline 42 is connected to the second filter 412, and the turbine bypass pipeline 42 includes a first branch and a second branch. The first branch is connected to the fifth interface 331 on the evaporator 33 through a first isolation butterfly valve 9 at one end away from the second filter 412, and a turbine bypass control valve 421 is provided on the second branch. The second branch is provided with a sixth interface 422 at one end away from the second filter 412, and the sixth interface 422 is connected to the third interface 232 on the third pipeline 23 through a second expansion joint 7. A throttling orifice plate 10 is provided in the second expansion joint 7.

[0041] like Figure 7As shown, an injection pipeline is arranged between the first injection interface 216 and the second injection interface 333, and a third regulating valve 1201 is arranged on the injection pipeline; an oil return pipeline is arranged between the first oil return interface 213 and the second oil return interface 332, and a second regulating valve 1101 is arranged on the oil return pipeline; a cooling pipeline is arranged between the first cooling interface 214, the second cooling interface 215 and the first interface 19, a fourth regulating valve 1301 is arranged on one side of the first cooling interface 214, and a fifth regulating valve 1302 is arranged on one side of the second cooling interface 215.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A MW-class multi-skid assembled ORC generator set, characterized in that: The invention comprises a working fluid pump skid (1), a preheater evaporator skid (3), a turbine condenser skid (2) and a turbine connecting pipeline (4); the working fluid pump skid (1) and the preheater evaporator skid (3) are arranged side by side and are positioned and connected by installing a positioning plate (5); the turbine condenser skid (2) is fixed above the working fluid pump skid (1) by a saddle (222); the turbine condenser skid (2) and the preheater evaporator skid (3) are connected by a turbine connecting pipeline (4); a second expansion joint (7) and a third expansion joint (8) are arranged between the turbine condenser skid (2) and the turbine connecting pipeline (4); and a first isolating butterfly valve (9) is arranged between the preheater evaporator skid (3) and the turbine connecting pipeline (4).

2. A MW-class multi-skid assembled ORC generator set according to claim 1, characterized in that: The working fluid pump skid (1) comprises a first supporting frame and a working fluid pump (12); the working fluid pump (12) is installed in the first supporting frame, and the working fluid pump (12) is connected to a first pipeline and a second pipeline on both sides respectively, and the first pipeline is provided with a second isolating butterfly valve (14); the second pipeline is provided with a first stop check valve (16), a bypass pipeline (17), a first regulating valve (18) and a first interface (19), and the other end of the second pipeline is connected to a first expander and is connected to the preheater evaporator skid (3) via a first expansion joint (6).

3. A MW-class multi-skid assembled ORC generator set according to claim 2, characterized in that: The first supporting frame comprises a first bottom frame (11), a plurality of first cross beams (111) and a plurality of bottom beams (112); a first mounting hole (1111) is provided on a side surface of the cross beam; and a first positioning hole (1121) is provided on a side surface of the bottom beam (112) for connection with a mounting positioning plate (5).

4. A MW-class multi-skid assembled ORC generator set according to claim 2, characterized in that: A filter pipeline is provided between the first pipeline and the second isolating butterfly valve (14), and the filter pipeline is connected to the first pipeline via a third isolating butterfly valve (15), and a first filter (13) is provided on the filter pipeline.

5. A MW-class multi-skid assembled ORC generator set according to claim 2, characterized in that: The turbine condenser skid (2) comprises a condenser (22) and a turbine generator (21); the condenser (22) is fixed above a saddle (222); a second interface (223) is provided below the condenser (22) and is connected to a second isolating butterfly valve (14) of the working fluid pump skid (1); the turbine generator (21) is fixed above the condenser (22) via a support plate (221); an air intake port (212), an air discharge port (211), a first ejection interface (216), a first cooling interface (214), a second cooling interface (215) and a first oil return interface (213) are provided on the turbine generator (21); the air discharge port (211) is communicated with the condenser (22) via a third pipeline (23); and an elbow (231), a third interface (232) and a fourth isolating butterfly valve (24) are provided on the third pipeline (23).

6. A MW-class multi-skid assembled ORC generator set according to claim 5, characterized in that: The preheater evaporator skid (3) comprises a second support frame, an evaporator (33) and a preheater (31); the evaporator (33) is fixed to the second support frame via a saddle (222); the preheater (31) is fixed to the second support frame via a support plate (221); the preheater (31) and the evaporator (33) are connected via a fourth pipeline; the preheater (31) is provided with a fourth interface (311) and is connected to the working fluid pump (12) via a first expansion joint (6); the evaporator (33) is provided with a second oil return interface (332) and a fifth interface (331); the fifth interface (331) is provided with a second ejection interface (333); The second supporting frame comprises a second bottom frame (32) and a plurality of second cross beams (321); the second cross beams (321) are provided with second positioning holes (3211) on the sides thereof for connecting with the mounting positioning plates (5).

7. A MW-class multi-skid assembled ORC generator set according to claim 6, characterized in that: The turbine connecting pipeline (4) comprises a turbine inlet pipeline (41) and a turbine bypass pipeline (42); a second filter (412) is provided at one end of the turbine inlet pipeline (41); the other end is connected to an air intake port (212) on a turbine generator (21) via a third expansion joint (8); a turbine inlet control valve (411) is provided on the turbine inlet pipeline (41); the turbine bypass pipeline (42) is in communication with the second filter (412); ) comprises a first branch and a second branch, wherein the end of the first branch away from the second filter (412) is connected to a fifth interface (331) on the evaporator (33) via a first isolating butterfly valve (9), the second branch is provided with a turbine bypass control valve (421), the end of the second branch away from the second filter (412) is provided with a sixth interface (422), and the sixth interface (422) is connected to a third interface (232) on the third pipeline (23) via a second expansion joint (7).

8. A MW-class multi-skid assembled ORC generator set according to claim 6, characterized in that: A throttling orifice plate (10) is provided in the second expansion joint (7).

9. A MW-class multi-skid assembled ORC generator set according to claim 7, characterized in that: An injection pipeline is provided between the first injection interface (216) and the second injection interface (333), and a third regulating valve (1201) is provided on the injection pipeline; an oil return pipeline is provided between the first oil return interface (213) and the second oil return interface (332), and a second regulating valve (1101) is provided on the oil return pipeline; a cooling pipeline is provided between the first cooling interface (214), the second cooling interface (215) and the first interface (19), a fourth regulating valve (1301) is provided on one side of the first cooling interface (214), and a fifth regulating valve (1302) is provided on one side of the second cooling interface (215).

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