MW-level skid-mounted radial centrifugal ORC generator set

Abstract

The utility model discloses an MW level skid-mounted radial centrifugal ORC generator set in the technical field of organic Rankine cycle power generation equipment, which comprises an integral bottom frame, the top of the integral bottom frame is connected with a turbine-generator skid through a plurality of bolts, and the rear side of the integral bottom frame is connected with an evaporator-condenser skid. A pipeline assembly is arranged between the turbine-generator skid and the evaporator-condenser skid, the turbine-generator skid comprises a working pump, and the working pump is connected to the left side of the top of the overall bottom frame. The integral bottom frame is connected with the turbine-generator prying block and the evaporator-condenser prying block through the bolts, after a unit is integrally assembled and tested in a factory, the unit can be transported into two prying blocks, the prying blocks are connected in a hoisting and bolt fastening mode after the unit arrives at the site, then unit reassembly can be completed, pipeline cutting and welding on the site are not needed, the cost is reduced, and the production efficiency is improved. And on-site construction time and installation cost are reduced while installation quality of the unit is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of organic rankine cycle power generation equipment, especially to a MW level pry radial centrifugal ORC generator set. BACKGROUND

[0002] Organic Rankine Cycle (ORC) is a technology that uses low-boiling organic working fluid to complete the phase change of the refrigerant using low-temperature heat sources to realize Rankine cycle power generation. Liquid organic working fluid is heated in the evaporator by low-temperature waste heat to produce high-temperature and high-pressure gas, which drives the generator to generate electric energy through the expander. The low-temperature and low-pressure gaseous refrigerant after the expander is cooled into a liquid in the condenser, and is sent back to the evaporator by the refrigerant pump for pressurization, completing a cycle.

[0003] Organic Rankine Cycle has been widely used in the fields of geothermal energy, solar energy, biomass energy, ocean temperature difference energy, and various thermal processes, etc. with low-grade available energy, not only having economic value but also being beneficial to environmental protection.

[0004] At present, due to the influence of unit heat exchanger and the size and installation position of moving equipment parts, the ORC generator set with a single unit power generation capacity of 1.4 MW and above in China is mostly of split structure. The main equipment of the ORC set with split structure is assembled on the split independent cement foundation, and then welded by pipeline to form a whole pry installation module. However, this split installation structure has poor overall performance, large land occupation, inconvenient on-site construction and installation, poor appearance, reduces the protection and safety of the unit, and has high labor cost.

[0005] The assembly and welding of the on-site pipeline have a high risk of leakage. After the working fluid is filled in the system pipeline, the quality problem of the pipeline welding cannot be predicted during the system debugging and testing of the whole machine. The organic working fluid is prone to leakage, which greatly increases the instability, safety, and risk of organic working fluid leakage of the system. Based on this, a MW level pry radial centrifugal ORC generator set is proposed. UTILITY MODEL CONTENTS

[0006] In order to improve the above-mentioned problems of the main equipment of the ORC set with split structure, which is assembled on the split independent cement foundation, and then welded by pipeline to form a whole pry installation module, has large land occupation, inconvenient on-site construction and installation, poor appearance, reduces the protection and safety of the unit, and has high labor cost, the utility model provides a MW level pry radial centrifugal ORC generator set.

[0007] The utility model provides a MW level pry radial centrifugal ORC generator set, adopts the following technical scheme:

[0008] A MW-class skid-mounted radial centrifugal ORC generator set, comprising a whole base frame, a turbine-generator skid block connected to the top of the whole base frame through a plurality of bolts, and an evaporator-condenser skid block connected to the rear side of the whole base frame, wherein a pipeline assembly is arranged between the turbine-generator skid block and the evaporator-condenser skid block.

[0009] The turbine-generator skid block comprises a working pump connected to the left side of the top of the whole base frame, a generator connected to the right end of the top of the whole base frame, and an oil station connected to the side of the top of the whole base frame close to the generator, wherein the side of the oil station away from the generator is connected to a radial centrifugal turbine expander.

[0010] The evaporator-condenser skid block comprises a plurality of saddles connected through a plurality of bolts between the upper and lower saddles, wherein the top of each of the saddles is respectively provided with a condenser and an evaporator, and the condenser is arranged above the evaporator.

[0011] By adopting the above technical scheme, the whole base frame is connected to the turbine-generator skid block and the evaporator-condenser skid block through a plurality of bolts, the unit is transported in two skid blocks after being integrally assembled and tested in the factory, and the unit is reassembled by hoisting and bolting each skid block on site, without cutting and welding pipes on site, so that the installation quality of the unit is ensured, and the on-site construction time and installation cost are reduced.

[0012] Optionally, the pipeline assembly comprises an air inlet pipe connected to the inlet end of the radial centrifugal turbine expander and the top of the evaporator, an air outlet pipe connected to the outlet end of the radial centrifugal turbine expander and one side of the condenser, an outlet pipe connected to the bottom of the evaporator and the output end of the working pump, and an inlet pipe connected to the bottom of the condenser and the input end of the working pump.

[0013] By adopting the above technical scheme, the organic working medium is heated into high-temperature and high-pressure working medium vapor in the evaporator by a heat source, then enters the radial centrifugal turbine expander through the air inlet pipe to drive the turbine to work and drive the generator to generate electricity, the working medium exhaust gas after work enters the inside of the condenser through the air outlet pipe to condense into liquid working medium, the working pump is opened to extract the liquid working medium in the condenser through the inlet pipe and pressurize it again through the working pump to enter the inside of the evaporator through the outlet pipe, and the organic working medium is evaporated to form a closed power generation cycle system.

[0014] Optionally, the condenser and the evaporator are provided with a maintenance platform away from the side of the whole base frame.

[0015] By adopting the above technical scheme, the condenser and the evaporator can be conveniently maintained regularly through the maintenance platform.

[0016] Optionally, the top of the whole bottom frame is provided with a support, a hand chain block is arranged on one side of the radial centrifugal turboexpander and the oil station, and the hand chain block is above the oil station.

[0017] By using the above technical scheme, the hand chain block facilitates the installation of the oil station and the radial centrifugal turboexpander, and can also be used for hoisting during maintenance and replacement of core components of the radial centrifugal turboexpander.

[0018] Optionally, a filter is arranged on the inlet pipe, and a working medium pump outlet regulating valve is arranged on the outlet pipe.

[0019] By using the above technical scheme, the filter can filter the liquid working medium, prevent impurities from entering the inside of the working pump and damaging the working pump, and the working medium pump outlet regulating valve can change the flow and pressure of the liquid working medium, so as to realize accurate control of the fluid.

[0020] Optionally, a working medium pump bypass minimum flow control valve is arranged at the output end of the working pump.

[0021] By using the above technical scheme, the heat source is matched with the working medium evaporation capacity.

[0022] Optionally, a turbo inlet regulating valve is arranged on the inlet pipe, and an expansion joint is arranged on the outlet pipe.

[0023] By using the above technical scheme, the turbo inlet regulating valve is mainly arranged to regulate the flow, so as to control the output power of the radial centrifugal turboexpander, and the expansion joint can absorb the deformation of the outlet pipe caused by thermal expansion and cold contraction due to temperature change during operation, so as to protect the outlet pipe from damage.

[0024] Optionally, a turbo preheating valve is arranged at the inlet end of the radial centrifugal turboexpander, a bypass pipe is connected to the top of the inlet pipe, a turbo bypass quick-opening valve is arranged on the bypass pipe, and a flow orifice plate is arranged between the outlet end of the radial centrifugal turboexpander and the inlet pipe.

[0025] By using the above technical scheme, the turbo bypass quick-opening valve is arranged to facilitate the adjustment of the flow to maintain the stable operation of the radial centrifugal turboexpander, the turbo preheating valve is arranged to provide additional heating for the radial centrifugal turboexpander, prevent damage of the radial centrifugal turboexpander due to too low temperature during startup, and ensure that the radial centrifugal turboexpander can smoothly reach the working temperature during startup, and the flow orifice plate functions as a pressure reducer.

[0026] In summary, the utility model has at least one of the following beneficial effects:

[0027] The integral bottom frame is connected with the turbine-generator pry block and the evaporator-condenser pry block through a plurality of bolts, and after the unit is integrally assembled and tested in the factory, the unit can be transported in two pry blocks, and after being transported to the site, the pry blocks are connected through hoisting and bolt fastening, so that the unit reassembly is completed, without cutting and welding pipes on site, so that the installation quality of the unit is ensured, and the on-site construction time and installation cost are reduced.

[0028] Through the setting of the maintenance platform, the condenser and the evaporator are convenient to maintain, through the cooperation of the chain hoist and the support, the oil station and the radial centrifugal turbine coupling are convenient to install, and the chain hoist and the support can also be used for maintenance and replacement of core components on the radial centrifugal turbine expander. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 It is an overall structure schematic view of the present application.

[0031] Figure 2 It is an overall bottom frame and saddle connection structure schematic view of the present application.

[0032] In the figure: 1, integral bottom frame; 2, radial centrifugal turbine expander; 3, oil station; 4, generator; 5, filter; 6, working medium pump; 7, expansion joint; 8, condenser; 9, evaporator; 9-1, saddle; 10, turbine inlet regulating valve; 11, turbine bypass quick-opening valve; 12, working medium pump bypass minimum flow control valve; 13, working medium pump outlet regulating valve; 14, maintenance platform; 15, turbine preheating valve; 16, chain hoist; 17, flow orifice plate; 18, support. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings Figures 1-2 The present application will be further described in detail.

[0034] Please refer to the drawings in the specification Figure 1 and Figure 2The utility model provides an embodiment: a MW level pry radial centrifugal ORC generator set, the top of whole bottom frame 1 is connected with turbine - generator pry block through a plurality of bolts, the rear side of whole bottom frame 1 is connected with evaporator - condenser pry block, and pipeline assembly is arranged between turbine - generator pry block and evaporator - condenser pry block, and turbine - generator pry block includes working pump 6, and the output end of working pump 6 is provided with working medium pump bypass minimum flow control valve 12. Guarantee heat source and working medium evaporation capacity match.

[0035] Working pump 6 is connected at the left side of the top of whole bottom frame 1, the right end of the top of whole bottom frame 1 is connected with generator 4, and the side close to generator 4 of the top of whole bottom frame 1 is connected with oil station 3, and the side away from generator 4 of oil station 3 is connected with radial centrifugal turbine expander 2.

[0036] The top of whole bottom frame 1 is installed with support 18, the side close to radial centrifugal turbine expander 2 and oil station 3 of support 18 is provided with hand chain block 16, and hand chain block 16 is located above oil station 3. Through hand chain block 16, it is convenient to install oil station 3 and radial centrifugal turbine coupling, and it can also be used for the overhaul and replacement hoisting of core components on radial centrifugal turbine expander 2.

[0037] The evaporator - condenser pry block of whole bottom frame 1 includes a plurality of saddles 9-1, and the upper and lower two saddles 9-1 are connected through a plurality of bolts, and the top of a plurality of saddles 9-1 is installed with condenser 8 and evaporator 9 respectively, and condenser 8 is located above evaporator 9, and the side away from whole bottom frame 1 of condenser 8 and evaporator 9 is provided with overhaul platform 14. It is convenient to carry out regular overhaul to condenser 8 and evaporator 9 through overhaul platform 14.

[0038] Pipeline assembly includes inlet pipe, and the inlet pipe is connected at the inlet end of radial centrifugal turbine expander 2 and the top of evaporator 9, and the outlet end of radial centrifugal turbine expander 2 is connected with the side of condenser 8 with outlet pipe, and turbine inlet regulating valve 10 is arranged on the inlet pipe, and expansion joint 7 is arranged on the outlet pipe. The main purpose of the setting of turbine inlet regulating valve 10 is to adjust flow, thereby controlling the output power of radial centrifugal turbine expander 2, and the setting of expansion joint 7 can absorb the deformation of outlet pipe caused by thermal expansion and cold shrinkage due to temperature change in the running process, and the outlet pipe is protected from damage.

[0039] The output end of the working pump 6 is connected with an outlet pipe at the bottom of the evaporator 9, and the input end of the working pump 6 is connected with an inlet pipe at the bottom of the condenser 8. The organic working medium is heated into high-temperature and high-pressure working medium vapor in the evaporator 9 by a heat source, then enters the radial centrifugal turbine expander 2 through the gas inlet pipe to drive the turbine to work and drive the generator 4 to generate electricity, and the working medium exhaust gas after work enters the inside of the condenser 8 through the gas outlet pipe and is condensed into liquid working medium. The working pump 6 is opened, the liquid working medium in the inside of the condenser 8 is extracted through the inlet pipe and pressurized by the working medium pump and then enters the inside of the evaporator 9 through the outlet pipe again, and the organic working medium evaporates to form a closed power generation cycle system.

[0040] A filter 5 is arranged on the inlet pipe, and a working medium pump outlet adjusting valve 13 is arranged on the outlet pipe. The filter 5 can filter the liquid working medium to prevent impurities from entering the inside of the working pump 6 and damaging the working pump 6. The working medium pump outlet adjusting valve 13 can change the flow and pressure of the liquid working medium, so as to realize accurate control of the fluid.

[0041] A turbine preheating valve 15 is arranged at the inlet end of the radial centrifugal turbine expander 2, a bypass pipe is connected at the top of the gas inlet pipe, a turbine bypass quick-opening valve 11 is arranged on the bypass pipe, and a flow orifice plate 17 is arranged between the outlet end of the radial centrifugal turbine expander 2 and the gas inlet pipe. The turbine bypass quick-opening valve 11 is arranged to adjust the flow to maintain the stable operation of the radial centrifugal turbine expander 2, the turbine preheating valve 15 is arranged to provide additional heating for the radial centrifugal turbine expander 2, prevent the radial centrifugal turbine expander 2 from being damaged due to too low temperature during the starting process, and ensure that the radial centrifugal turbine expander 2 can smoothly reach the working temperature during the starting process, and the flow orifice plate 17 is arranged to play a role of pressure reduction.

[0042] Working principle: in use, the turbine-generator pry block and the evaporator-condenser pry block are transported to the required position, and the turbine-generator pry block and the evaporator-condenser pry block are connected with the integral bottom frame 1 through bolts, the organic working medium is heated into high-temperature and high-pressure working medium vapor in the evaporator 9 by a heat source, then enters the radial centrifugal turbine expander 2 through the gas inlet pipe to drive the turbine to work and drive the generator 4 to generate electricity, and the working medium exhaust gas after work enters the inside of the condenser 8 through the gas outlet pipe and is condensed into liquid working medium, the working pump 6 is opened, the liquid working medium in the inside of the condenser 8 is extracted through the inlet pipe and pressurized by the working medium pump and then enters the inside of the evaporator 9 through the outlet pipe again, and the organic working medium evaporates to form a closed power generation cycle system, thereby improving the cycle power generation efficiency and realizing efficient use of energy.

[0043] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A MW scale skid-mounted radial centrifugal ORC generator set comprising a monolithic base frame (1), characterized in that: The top of the integral base frame (1) is connected with a turbine-generator pry block through several bolts, the rear side of the integral base frame (1) is connected with an evaporator-condenser pry block, and a pipeline assembly is arranged between the turbine-generator pry block and the evaporator-condenser pry block. The turbine-generator pry block comprises a working pump (6) connected at the left side of the top of the integral base frame (1), a generator (4) connected at the right end of the top of the integral base frame (1), and an oil station (3) connected at the side of the top of the integral base frame (1) close to the generator (4). The evaporator-condenser pry block comprises several saddles (9-1), the upper and lower saddles (9-1) are connected through several bolts, the top of each saddle (9-1) is respectively provided with a condenser (8) and an evaporator (9), and the condenser (8) is located above the evaporator (9).

2. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 1, characterized in that: The pipeline assembly comprises an air inlet pipe connected at the inlet end of the radial centrifugal turbine expander (2) and the top of the evaporator (9), an air outlet pipe connected at the outlet end of the radial centrifugal turbine expander (2) and one side of the condenser (8), an outlet pipe connected at the output end of the working pump (6) and the bottom of the evaporator (9), and an inlet pipe connected at the input end of the working pump (6) and the bottom of the condenser (8).

3. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 1, characterized in that: The condenser (8) and the evaporator (9) are provided with an inspection platform (14) away from the side of the integral base frame (1).

4. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 1, characterized in that: The top of the integral base frame (1) is provided with a support (18), the support (18) is provided with a hand-operated hoist (16) away from the side of the radial centrifugal turbine expander (2) and the oil station (3), and the hand-operated hoist (16) is located above the oil station (3).

5. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 2, characterized in that: A filter (5) is arranged on the inlet pipe, and a working medium pump outlet regulating valve (13) is arranged on the outlet pipe.

6. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 1, characterized in that: A working medium pump bypass minimum flow control valve (12) is arranged at the output end of the working pump (6).

7. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 2, characterized in that: A turbine inlet regulating valve (10) is arranged on the air inlet pipe, and an expansion joint (7) is arranged on the air outlet pipe.

8. A MW scale skid-mounted radial centrifugal ORC generator set according to claim 2, characterized in that: A turbine preheating valve (15) is arranged at the inlet end of the radial centrifugal turbine expander (2), a bypass pipe is connected at the top of the air inlet pipe, a turbine bypass quick-opening valve (11) is arranged on the bypass pipe, and a flow orifice plate (17) is arranged between the outlet end of the radial centrifugal turbine expander (2) and the air inlet pipe.

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