A high-efficiency energy-saving generator set device and use method thereof

Abstract

The present invention discloses a high-efficiency and energy-saving generator set device and a method of using the same, which relate to the relevant field of power system, including a generator set. The grid-connected structure of components such as a quantitative pump, a control output component, and a variable motor is set, and the grid-connected requirements of the generator set are fully met in combination with a speed control method. Under different wind speed input conditions, the gear box speed greatly reduces the deviation value, and the setting of a proportional valve and a throttle valve can reduce the gear box speed volatility and low-frequency fluctuation amplitude.

Description

Technical Field

[0001] The present invention relates to the field of electric power systems, and in particular to a high-efficiency energy-saving generator set device and a use method thereof. Background Art

[0002] Energy is a material resource in nature that can provide energy for humans. It is a source of energy in various forms that can be converted into each other. Energy is an important material basis of the national economy. The degree of development and effective utilization of energy and per capita consumption are important indicators of production technology and living standards. Generator sets are working units used for power generation, including diesel generator sets, gas generator sets, gasoline generator sets, wind generator sets, solar generator sets, hydroelectric generator sets, coal-fired generator sets, etc.

[0003] Existing wind power generation technology, under the influence of factors such as wind speed and wind turbine aerodynamic torque parameters, has a relatively obvious fluctuation effect on the hydraulic system of power generation, which in turn affects power generation and grid connection; some technologies require the addition of accumulators or compensation devices to solve this technical problem. This method increases the overall size of the generator set while increasing the cost, and also requires energy supply for the added auxiliary components, making it difficult to achieve energy-saving and efficient technical effects. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a high-efficiency energy-saving generator set device and a method of using the same.

[0005] The present invention is implemented by constructing a high-efficiency energy-saving generator set device and a method of using the same, the device comprising a generator set;

[0006] The generator set includes a transmission assembly fixedly installed at the bottom of the generator set casing; a metering pump is fixedly installed on the right side of the transmission assembly; a control output component is arranged in a pipeline at the output port of the metering pump body; the right side of the control output component is installed in a pipeline at the inlet and outlet of the variable motor; the variable motor is fixedly installed at the rear end of the base by bolts; a gear box is fixedly installed at the front end of the base by bolts; and a generator is fixedly arranged at the front end of the gear box.

[0007] Preferably, the transmission assembly includes a coupling fixedly mounted on the left end shaft of the metering pump; the coupling is fixedly mounted on the left and right sides of the connecting shaft; the connecting shaft is plugged and fixed at the center through hole of the transmission gear; the transmission gear meshing transmission is arranged on the inner side of the chain; the coupling on the left side of the connecting shaft is fixedly mounted on the absolute encoder detection shaft.

[0008] Preferably, the control output component comprises a multi-way cylinder with a pipeline installed at the output port of the metering pump; the through-hole pipeline at the top of the multi-way cylinder is installed with an output pipe; and the output pipe is installed and connected with the pipeline at the left end of the proportional valve.

[0009] Preferably, the right side pipe opening of the proportional valve is connected to the left end pipeline of the throttle valve; the output pipe is installed at the top side pipe opening of the pressure valve; the bottom of the pressure valve is connected to the pipeline at the top side notch of the return pipe.

[0010] Preferably, the generator comprises a clamping shaft body mounted on the front end shaft body of the gear box; a mounting shaft is plugged and fixed at the front end of the clamping shaft body; and a sealing gasket is provided at the connection groove between the clamping shaft body and the mounting shaft.

[0011] Preferably, the clamping shaft is fixedly inserted in the rotating inner ring of the bearing; the front end of the mounting shaft is inserted in the middle gear through hole of the planetary gear set; the outer side of the outer gear ring cylinder of the planetary gear set is fixedly provided with a rotor winding; the rotor winding is rotatably arranged inside the stator assembly.

[0012] Preferably, the front shaft of the variable motor and the rear shaft of the gear box are fixedly mounted.

[0013] Preferably, the liquid inlet at the left end of the variable motor is installed and connected to the output pipe, the liquid outlet at the left end of the variable motor is installed and connected to the return pipe, a pressure sensor is fixedly provided on the output pipe, and a pressure device for detection is provided at the inlet of the variable motor.

[0014] Preferably, sensors for detecting rotation speed and displacement / torque are respectively provided inside the metering pump and the gear box, and the generator is connected to an external power grid.

[0015] Preferably, the method for using the energy-efficient generator set is characterized by comprising the following steps:

[0016] Step 1: Assembly preparation; the staff first installs and fixes the generator set of the device on the wind turbine, and installs the transmission gear on the top side of the chain with the shaft of the wind turbine to achieve the coaxial transmission connection between the quantitative pump and the wind turbine; then connect the generator to the external power grid through cables to achieve grid-connected power generation;

[0017] Step 2: Power generation test run; the operation of the wind turbine drives the transmission gear and the chain to mesh, so that the transmission force of the wind turbine is transmitted to the connecting shaft. Here, the connecting shaft can drive the couplings on its left and right sides to drive the quantitative pump and the absolute encoder to work respectively. At this time, the quantitative pump is driven to press the hydraulic oil into the control output part. At the same time, the absolute encoder can detect the torque data of the connecting shaft. Here, the torque data of the connecting shaft is the same as the torque of the wind turbine; the hydraulic oil is pressed into the output pipe through the quantitative pump and the multi-way cylinder, and then flows through the proportional valve and the throttle valve to reduce the output fluctuation degree of the wind turbine. Then, the hydraulic oil enters the variable motor and controls the variable to provide the required driving force for the gearbox, so that the gearbox provides driving force for the generator. Here, the gearbox can transmit the transmission force to the installation shaft through the clamping shaft body, so that the installation shaft drives the rotor winding to rotate inside the stator assembly after being driven by the planetary gear set, realizing magnetic field cutting to generate electrical energy and output it to the external power grid through the cable;

[0018] Step 3: Control output; During the operation of the generator set, the quantitative pump and the proportional valve and throttle valve in the control output and the variable motor form an output circuit, which is calculated according to the following formula:

[0019] ;

[0020] ;

[0021] Where: is the output power of the metering pump; is the output power of the variable motor; and They are the displacement and speed of the metering pump respectively; It is the pressure between the metering pump, proportional valve and throttle valve; is the pressure inlet pressure of the pressure vessel;

[0022] Here, the output value of the output circuit is controlled to control and adjust the drive value of the gearbox;

[0023] Step 4: Multi-value monitoring; the torque data of the connecting shaft and the wind turbine are detected by the absolute encoder, and the data are used to monitor the values ​​under stable wind speed and fluctuating wind speed respectively. At the same time, the output speed fluctuation value of the gearbox under different wind speeds is recorded by the sensor inside the gearbox. When the fluctuation data to be detected is controlled within the standard operating value range, long-term low-fluctuation grid-connected power generation can be achieved.

[0024] The present invention has the following advantages: The present invention provides a high-efficiency energy-saving generator set device and a method of using the same through improvement, which has the following improvements compared with the same type of equipment:

[0025] The invention discloses a high-efficiency and energy-saving generator set device and a method of using the same, which fully meets the requirements for generator set grid connection by setting up a grid-connected structure including a quantitative pump, a control output component, a variable motor and other components, and combining the speed control method; under different wind speed input conditions, the gear box speed greatly reduces the deviation value, and the setting of a proportional valve and a throttle valve can reduce the gear box speed volatility and the low-frequency fluctuation amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of the present invention;

[0027] Figure 2 It is a schematic diagram of the left side structure of the generator set of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal axonometric structure of the generator set of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission assembly of the present invention;

[0030] Figure 5 It is a schematic diagram of the variable motor, pressure device and base structure of the present invention;

[0031] Figure 6 The present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0032] Figure 7 It is a schematic diagram of the three-dimensional exploded structure of the generator of the present invention.

[0033] Among them: generator set-1, transmission component-11, metering pump-12, control output component-13, variable motor-14, pressure device-141, base-15, gear box-16, generator-17, coupling-111, connecting shaft-112, transmission gear-113, chain-114, absolute encoder-115, multi-way cylinder-131, output pipe-132, proportional valve-133, throttle valve-134, pressure valve-135, return pipe-136, clamping shaft-171, mounting shaft-172, sealing gasket-173, bearing-174, planetary gear set-175, rotor winding-176, stator assembly-177. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 to Figure 7 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0037] Embodiment 1:

[0038] See also Figure 1 to Figure 7 , a high-efficiency energy-saving generator set device and a method of using the same of the present invention, comprising a generator set 1;

[0039] The generator set 1 includes a transmission assembly 11 fixedly installed at the bottom of the generator set 1 shell; a metering pump 12 is fixedly installed on the right side of the transmission assembly 11; a control output component 13 is arranged on the pipeline at the pump outlet of the metering pump 12; the right side of the control output component 13 is installed with the pipeline at the inlet and outlet of the variable motor 14, and the control output component 13 can reduce the fluctuation phenomenon of the generator 17; the variable motor 14 is fixedly installed on the rear end of the base 15 by bolts; the front shaft of the variable motor 14 is fixedly installed with the rear shaft of the gear box 16; the front end of the base 15 is fixedly installed with the gear box 16 by bolts; the front end of the gear box 16 is fixedly arranged with the generator 17; the metering pump 12 and the gear box 16 are respectively provided with sensors for detecting the speed and displacement / torque, and the generator 17 is connected to the external power grid.

[0040] The transmission assembly 11 includes a coupling 111 fixedly installed at the left end shaft of the metering pump 12; the coupling 111 is fixedly installed on the left and right sides of the connecting shaft 112; the connecting shaft 112 is plugged and fixed at the center through hole of the transmission gear 113; the transmission gear 113 is meshingly arranged on the inner side of the chain 114, and the coaxial transmission of the metering pump 12 and the external wind turbine is realized through the transmission gear 113 and the chain 114; the coupling 111 on the left side of the connecting shaft 112 is fixedly installed with the detection shaft of the absolute encoder 115.

[0041] The control output component 13 includes a multi-way cylinder 131 whose pipeline is installed at the output port of the metering pump 12; an output pipe 132 is installed on the through-hole pipeline at the top of the multi-way cylinder 131; the output pipe 132 is installed and connected with the pipeline at the left end of the proportional valve 133; the right side of the proportional valve 133 is installed and connected with the pipeline at the left end of the throttle valve 134; the output pipe 132 is installed at the top side of the pressure valve 135; the bottom of the pressure valve 135 is installed and connected with the pipeline at the top side notch of the return pipe 136; the left end liquid inlet of the variable motor 14 is installed and connected with the output pipe pipeline, the left end liquid outlet of the variable motor 14 is installed and connected with the return pipe pipeline, a pressure sensor is fixedly arranged on the output pipe 132, and a pressure device 141 for detection is arranged at the inlet of the variable motor 14.

[0042] Embodiment 2:

[0043] See also Figure 1 to Figure 7 Compared with the first embodiment, the present invention provides an energy-efficient generator set and its use method. The present embodiment further includes: a generator 17; the generator 17 includes a clamping shaft 171 mounted on the front end shaft of the gear box 16, and the rear side of the clamping shaft 171 is a rectangular slot structure; a mounting shaft 172 is fixedly inserted at the front end of the clamping shaft 171; a sealing gasket 173 is provided at the groove where the clamping shaft 171 and the mounting shaft 172 are connected; the clamping shaft 171 is fixedly inserted in the rotating inner ring of the bearing 174 The bearing 174 is fixedly arranged at the rear through hole of the gear box 16; the front end of the mounting shaft 172 is inserted into the middle gear through hole of the planetary gear set 175; a rotor winding 176 is fixedly arranged on the outside of the outer gear ring tube of the planetary gear set 175, and the planetary gear set 175 specifically consists of a sun gear on the middle side, a planetary gear meshingly arranged on the outside of the sun gear, a gear ring meshingly arranged on the outside of the planetary gear, and a sleeve arranged on the outside of the gear ring; the rotor winding 176 is rotatably arranged inside the stator assembly 177.

[0044] The working principle of the above-mentioned high-efficiency energy-saving generator set device and its use method is:

[0045] First, the staff first installs and fixes the generator set 1 of the device on the wind turbine, and installs the transmission gear 113 on the top side of the chain 114 with the shaft of the wind turbine to achieve the coaxial transmission connection between the quantitative pump and the wind turbine; then the generator 17 is connected to the external power grid through a cable to achieve grid-connected power generation;

[0046] Then, the operation of the wind turbine drives the transmission gear 113 and the chain 114 to mesh, so that the transmission force of the wind turbine is transmitted to the connecting shaft 112. Here, the connecting shaft 112 can drive the couplings 111 on its left and right sides to drive the quantitative pump 12 and the absolute value encoder 115 to work respectively. At this time, the quantitative pump 12 is driven to press the hydraulic oil into the control output part 13. At the same time, the absolute value encoder 115 can detect the torque data of the connecting shaft 112. Here, the torque data of the connecting shaft 112 is the same as the torque of the wind turbine; the hydraulic oil is pressed into the input through the quantitative pump 12 and the multi-way cylinder 131. The hydraulic oil then flows through the proportional valve 133 and the throttle valve 134 to reduce the output fluctuation of the wind turbine. The hydraulic oil then enters the variable motor 14 and controls the variable to provide the required driving force for the gearbox 16, so that the gearbox 16 provides driving force for the generator 17. Here, the gearbox 16 can transmit the transmission force to the installation shaft 172 through the clamping shaft 171, so that the installation shaft 172 drives the rotor winding 176 to rotate inside the stator assembly 177 after being driven by the planetary gear set 175, so as to realize magnetic field cutting to generate electrical energy and output it to the external power grid through the cable.

[0047] During the operation of the generator set 1, the metering pump 12, the proportional valve 133 and the throttle valve 134 in the control output 13, and the variable motor 14 form an output circuit, which is calculated according to the following formula:

[0048] ;

[0049] ;

[0050] Where: is the output power of the metering pump 12; is the output power of the variable motor 14; and They are the displacement and speed of the metering pump 12 respectively; is the pressure between the metering pump 12 and the proportional valve 133 and the throttle valve 134; is the inlet pressure of the pressure vessel 141;

[0051] Here, the output value of the output circuit is controlled to control and adjust the driving value of the gear box 16;

[0052] Finally, the torque data of the connecting shaft 112 and the wind turbine are detected by the absolute encoder 115, and the data are used to monitor the values ​​under stable wind speed and fluctuating wind speed respectively. At the same time, the output speed fluctuation value of the gear box 16 under different wind speeds is recorded by the sensor inside the gear box 16. When the fluctuation data to be detected is controlled within the standard operating value range, long-term low-fluctuation grid-connected power generation can be achieved; at this time, the throttle valve 134 is controlled to be fully opened, thereby greatly reducing the energy loss of the output circuit composed of the metering pump 12, the control output component 13 and the variable motor 14.

[0053] The present invention provides an efficient and energy-saving generator set device and a method for using the same through improvements. The grid-connected structure of components such as a metering pump 12, a control output component 13, and a variable motor 14 are set, and combined with a speed control method, the grid-connected requirements of the generator set 1 are fully met; under different wind speed input conditions, the speed of the gear box 16 greatly reduces the deviation value, and the setting of a proportional valve 133 and a throttle valve 134 can reduce the speed volatility and low-frequency fluctuation amplitude of the gear box 16.

[0054] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-efficiency energy-saving generator set device, comprising a generator set (1); Features: The generator set (1) comprises a transmission assembly (11) fixedly mounted on the bottom of the generator set (1) housing; a metering pump (12) is fixedly mounted on the right side of the transmission assembly (11); a control output member (13) is arranged in a pipeline at the pump outlet of the metering pump (12); the right side of the control output member (13) is installed in a pipeline at the liquid inlet and outlet of a variable motor (14); the variable motor (14) is fixedly mounted on the rear end of a base (15) by bolts; a gear box (16) is fixedly mounted on the front end of the base (15) by bolts; a generator (17) is fixedly arranged at the front end of the gear box (16); The control output component (13) comprises a multi-way cylinder (131) having a pipeline installed at the output port of the metering pump (12); an output pipe (132) is installed at the through-hole pipeline at the top of the multi-way cylinder (131); the output pipe (132) is installed and connected to the pipeline at the left end of the proportional valve (133); the right end of the proportional valve (133) is installed and connected to the pipeline at the left end of the throttle valve (134); the output pipe (132) is installed at the top side of the pressure valve (135); the bottom of the pressure valve (135) is installed and connected to the pipeline at the top notch of the return pipe (136); The liquid inlet at the left end of the variable motor (14) is installed and connected to the output pipe, the liquid outlet at the left end of the variable motor (14) is installed and connected to the return pipe, a pressure sensor is fixedly arranged on the output pipe (132), and a pressure device (141) for detection is arranged at the inlet of the variable motor (14); The transmission assembly (11) comprises a coupling (111) fixedly mounted on the left end shaft of the metering pump (12); the coupling (111) is fixedly mounted on the left and right sides of the connecting shaft (112); the connecting shaft (112) is plugged and fixed at the central through hole of the transmission gear (113); the transmission gear (113) is meshingly arranged on the inner side of the chain (114); the coupling (111) on the left side of the connecting shaft (112) is fixedly mounted on the detection shaft of the absolute value encoder (115).

2. A high-efficiency energy-saving generator set according to claim 1, characterized in that: The generator (17) comprises a clamping shaft body (171) clamped and mounted on the front end shaft body of the gear box (16); a mounting shaft (172) is inserted and fixed at the front end of the clamping shaft body (171); and a sealing gasket (173) is provided at the connection groove between the clamping shaft body (171) and the mounting shaft (172).

3. A high-efficiency energy-saving generator set according to claim 2, characterized in that: The clamping shaft (171) is fixedly inserted in the rotating inner ring of the bearing (174); the front end of the mounting shaft (172) is inserted in the middle gear through hole of the planetary gear set (175); a rotor winding (176) is fixedly arranged on the outer side of the outer gear ring cylinder of the planetary gear set (175); and the rotor winding (176) is rotatably arranged inside the stator assembly (177).

4. A high-efficiency energy-saving generator set according to claim 3, characterized in that: The front shaft of the variable motor (14) and the rear shaft of the gear box (16) are fixedly mounted.

5. A high-efficiency energy-saving generator set according to claim 4, characterized in that: Sensors for detecting rotation speed, displacement and torque are respectively arranged inside the metering pump (12) and the gear box (16), and the generator (17) is connected to an external power grid.

6. A method for using a high-efficiency energy-saving generator set device, used for a high-efficiency energy-saving generator set device as claimed in claim 5, characterized in that: The following steps are involved: Step 1: Assembly preparation; The staff first installs and fixes the generator set (1) of the device on the wind turbine, and installs the transmission gear (113) on the top side of the chain (114) with the shaft of the wind turbine to achieve a coaxial transmission connection between the quantitative pump and the wind turbine; then the generator (17) is connected to the external power grid through a cable to achieve grid-connected power generation; Step 2: power generation test run; the wind turbine works to drive the transmission gear (113) and the chain (114) to mesh, so that the transmission force of the wind turbine is transmitted to the connecting shaft (112). Here, the connecting shaft (112) can drive the couplings (111) on the left and right sides thereof to drive the quantitative pump (12) and the absolute value encoder (115) to work respectively. At this time, the quantitative pump (12) is driven to press the hydraulic oil into the control output member (13). At the same time, the absolute value encoder (115) can detect the torque data of the connecting shaft (112). Here, the torque data of the connecting shaft (112) is the same as the torque of the wind turbine; the hydraulic oil is transmitted through the quantitative pump (12) and the multi-way cylinder (131). The hydraulic oil is pressed into the output pipe (132), then flows through the proportional valve (133) and the throttle valve (134) to reduce the output fluctuation of the wind turbine, and then enters the variable motor (14) and controls the variable to provide the required driving force for the gear box (16), so that the gear box (16) provides driving force for the generator (17). Here, the gear box (16) can transmit the transmission force to the installation shaft (172) through the clamping shaft (171), so that the installation shaft (172) drives the rotor winding (176) to rotate inside the stator assembly (177) after being driven by the planetary gear set (175), thereby realizing magnetic field cutting to generate electrical energy and output it to the external power grid through the cable; Step 3: Control output; During the operation of the generator set (1), the proportional valve (133) and the throttle valve (134) in the quantitative pump (12) and the control output member (13) and the variable motor (14) form an output circuit, and are calculated according to the following formula: ； ； Where: is the output power of the metering pump (12); is the output power of the variable motor (14); and are respectively the displacement and rotation speed of the metering pump (12); is the pressure between the metering pump (12), the proportional valve (133) and the throttle valve (134); is the inlet pressure of the pressure vessel (141); Here, the output value of the output circuit is controlled to control and adjust the driving value of the gear box (16); Step 4: multi-value monitoring; the torque data of the connecting shaft (112) and the wind turbine are detected by the absolute value encoder (115), and the values ​​under steady wind speed and fluctuating wind speed are respectively monitored by using the data, and the output speed fluctuation value of the gear box (16) under different wind speeds is recorded by the sensor inside the gear box (16); Step 5: Formal operation; when the fluctuation data to be detected is controlled within the standard operation value range, long-term low-fluctuation grid-connected power generation can be achieved; at this time, the throttle valve (134) is controlled to be fully open to greatly reduce the energy loss of the output circuit composed of the quantitative pump (12), the control output component (13) and the variable motor (14).

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