CN213574229U - Expander system and power generation system - Google Patents
Expander system and power generation system Download PDFInfo
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- CN213574229U CN213574229U CN202022600940.8U CN202022600940U CN213574229U CN 213574229 U CN213574229 U CN 213574229U CN 202022600940 U CN202022600940 U CN 202022600940U CN 213574229 U CN213574229 U CN 213574229U
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Abstract
The utility model discloses an expander system, which comprises a first valve, a first filter, an expansion power machine, a second valve, a vapor-liquid separation device and a lubricating liquid circulation device; an expansion motor for connection to a load to drive the load; the first valve is connected with the first filter, and the expansion power machine is connected with the first filter; the vapor-liquid separation device is connected with the expansion power machine; one end of the lubricating liquid circulating device is connected with the vapor-liquid separating device, and the other end of the lubricating liquid circulating device is connected with the expansion power machine; the lubricating liquid circulating device conveys the liquid in the vapor-liquid separation device to an expansion power machine for cooling, sealing and lubricating the expansion power machine; the second valve is arranged between the first filter and the expansion power machine, and can adjust the opening angle of the second valve according to the change of the load output power. The utility model discloses the output load of expansion power machine is invariable, can be according to user side load, and the load of the automatic adjustment expansion power machine energy realizes energy-conservation.
Description
Technical Field
The utility model relates to an expander field especially relates to an expander system and used this expander system's power generation system.
Background
The screw expansion power machine mainly uses power sources of steam, hot water, hot liquid or vapor-liquid two-phase fluid in industry to convert heat energy into power to drive a generator to generate electricity, or directly drives mechanical equipment such as a fan, a water pump, a compressor, a stirrer and the like to replace a motor or replace an expansion valve of a large-scale refrigerant and the like to recover power.
At present, double-screw organic Rankine cycle expanders are selected as domestic and foreign expanders, and the equipment transfers heat to lubricating oil in the organic Rankine cycle expanders by using a waste heat source through an exchanger, so that the lubricating oil is heated and increased in volume, and expansion power and work are driven. After expansion, the lubricating oil is cooled by a post cooler, and the volume is reduced. The whole working process of the expansion machine is a heat absorption and heat release process, and the utilization efficiency of energy is low. In addition, the device has the defects of large noise, large vibration, large volume, poor efficiency and the like.
Therefore, those skilled in the art have made an effort to develop an expander system capable of automatically adjusting the load of the expander energy source according to the load of the user side, thereby saving energy.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides an expansion machine system, which comprises a first valve, a second valve, a first filter, an expansion power machine, a vapor-liquid separation device and a lubricating liquid circulation device;
the expansion motor is configured to be connected to a load for driving the load;
the first valve is connected with the inlet of the first filter, and the expansion power machine is connected with the outlet of the first filter; the inlet of the vapor-liquid separation device is connected with the expansion power machine;
one end of the lubricating liquid circulating device is connected with the outlet of the vapor-liquid separation device, and the other end of the lubricating liquid circulating device is connected with the expansion power machine; the lubricating liquid circulating device is configured to convey liquid in the vapor-liquid separation device to the expansion power machine for cooling, sealing and lubricating of the expansion power machine;
the second valve is arranged between the first filter and the expansion power machine, the second valve is configured to adjust the opening angle of the second valve according to the change of the output power of the load, and the second valve stops working when the output power of the load is constant.
In some embodiments, optionally, the lubricating fluid circulation device comprises a circulating water pump, a cooler, a second filter, and a third valve; one end of the circulating water pump is connected with an outlet of the vapor-liquid separation device, the other end of the circulating water pump is connected with the cooler, the cooler is connected with the second filter, and the second filter is connected with the expansion power machine through the third valve.
In some embodiments, optionally, the liquid in the vapor-liquid separation device is water.
In some embodiments, optionally, the system further comprises a water replenishing pump and a water replenishing electric valve, wherein the water replenishing pump is connected to the vapor-liquid separation device through the water replenishing electric valve, and the water replenishing pump is configured to convey water of an external water source to the vapor-liquid separation device when the liquid level of the liquid in the vapor-liquid separation device is lower than a preset value; the water replenishment electric valve is configured to be in an open state when the water replenishment pump operates.
In some embodiments, optionally, the liquid level sensor is disposed within the vapor-liquid separation device and configured to detect a level of liquid within the vapor-liquid separation device.
In some embodiments, optionally, the expansion motor is a single screw expansion motor.
In some embodiments, optionally, further comprising at least one temperature sensor and at least one pressure sensor, the at least one temperature sensor and the at least one pressure sensor being arranged at preset positions, the at least one temperature sensor and the at least one pressure sensor being configured for monitoring pressure and temperature at the preset positions, respectively, and when the monitored pressure and/or temperature deviates from preset values.
In some embodiments, optionally, the at least one temperature sensor comprises a first temperature sensor disposed on the vapor-liquid separation device, a second temperature sensor disposed at a lubrication fluid inlet of the expansion motor, and a third temperature sensor disposed on the first filter; the at least one pressure sensor includes a first pressure sensor disposed on the vapor-liquid separation device, a second pressure sensor disposed at a lubrication fluid inlet of the expansion power machine, and a third pressure sensor disposed on the first filter.
The utility model also provides a power generation system, include:
the expander system as described above;
the power generator is connected with the expansion power machine of the expansion machine system and is driven by the expansion power machine.
In some embodiments, optionally, the power supply further comprises a frequency converter, wherein the frequency converter is connected to the generator, so that the power supply of the output of the generator is inversely converted into a standard working power supply which can be connected with a power grid after passing through the frequency converter.
The utility model provides an expander system has following technological effect:
1. the output load of the expansion power machine is constant, and the load of the energy source of the expansion power machine can be automatically adjusted according to the load change of a user side, so that the energy conservation is realized.
2. The water is used as the lubricating liquid of the expansion power machine to finish cooling, sealing and lubricating the expansion power machine, compared with the prior art, the expansion power machine has the advantages of saving energy, protecting environment, reducing noise and vibration and reducing the volume of the product.
3. When the load is a generator, a power supply inversion system is arranged, so that a power supply output by the generator is converted into a standard working power supply through the inversion system, and the standard working power supply can be connected with a local power grid in a grid mode.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural view of an expander system of the present invention;
fig. 2 is a block schematic diagram of an expander system of the present invention;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
fig. 5 is a side view of fig. 1.
The system comprises 11-a first valve, 12-a second valve, 20-an expansion power machine, 30-a first filter, 40-a load, 50-a vapor-liquid separation device, 61-a circulating water pump, 62-a cooler, 63-a second filter, 64-a third valve, 71-a water replenishing pump, 72-a water replenishing electric valve, 81-a pressure sensor, 82-a temperature sensor, 83-a liquid level sensor, 90-a frequency converter and 91-power consumption equipment.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.
As shown in fig. 1, the present invention provides an expansion machine system, which comprises a first valve 11, a first filter 30, an expansion power machine 20, a vapor-liquid separation device 50, a second valve 12 and a lubricating liquid circulation device. The expansion motor 20 is connected to the load 40 and drives the load 40 to operate. The first valve 11 is connected with the inlet of the first filter 30, the outlet of the first filter 30 is connected to the expansion power machine 20, the expansion power machine 20 is connected with the inlet of the vapor-liquid separation device 50, one end of the lubricating liquid circulation device is connected with the outlet of the vapor-liquid separation device 50, and the other end is connected with the expansion power machine 20. Wherein the lubricating fluid circulating device can use water as the lubricating fluid, i.e. the lubricating fluid circulating device transfers the water in the vapor-liquid separating device 50 into the expansion power machine 20 for cooling, sealing and lubricating the expansion power machine 20.
When the expansion motor 20 is started, the first valve 11 is opened and the compressed gas, liquid or the like flows through the first valve 11 into the first filter 30. In the first filter 30, impurities, particulate matter, and the like in the fluid are filtered. The filtered fluid enters the expansion motor 20, expands in volume, and is used to drive the load 40 to work. The fluid then enters the vapor-liquid separation device 50 and the expansion process is completed. The lubricating fluid circulating device inputs the water in the vapor-liquid separating device 50 into the expansion power machine 20 again, thereby completing the circulation of the water in the fluid in the whole system.
The second valve 12 is arranged on the conduit between the first filter 30 and the expansion motor 20. The second valve 12 is an electrically operated valve. The operation of the second valve 12 will be described below by taking the load 40 as an example of a generator. When the system is normally powered on and self-tested, the second valve 12 works. When the generator speed is constant at the preset speed, the second valve 12 stops operating. When the output power of the generator changes, the opening angle of the second valve 12 can be automatically adjusted according to the change of the output power of the generator, so that the angle reaches the optimal position, and the output power of the generator is controlled to be constant. For example, the preset speed of the generator is 1500 revolutions, after the generator is started, the second valve 12 is opened for 1 degree in two seconds, and when the rotating speed of the generator is constant at 1500 revolutions, the second valve 12 stops working; if the user end electricity load changes, the opening angle of the second valve 12 is automatically adjusted according to the change degree.
In some embodiments, the expansion motor 20 is selected to be a single screw expansion motor.
The utility model discloses in, can use the water as lubricated liquid to reach sealed, cooling, lubricated, fall the purpose of making an uproar, thereby make the utility model provides an expander system has characteristics such as small, low in noise, vibration are little, the volume is efficient.
In some embodiments, the load 40 may be an electrical generator. It should be understood that the load 40 is not limited to the generator described herein, but may be a fan, a compressor, or other devices requiring motor drive, such as a fan, a compressor, or the like, and the expander system of the present invention replaces the motor to drive these devices. In the present invention, the load 40 is described as an example of a generator, but the present invention is not limited to the generator as the load 40. In some embodiments, a frequency converter 90 is further disposed between the generator and the power consumption device 91 at the user end, and the power output by the generator is inverted and converted into a standard working power, so that grid connection with the local power grid can be achieved.
In some embodiments, the lubricating fluid circulation device includes a circulating water pump 61, a cooler 62, a second filter 63, and a third valve 64. One end of the water circulation pump 61 is connected to the vapor-liquid separation device 50, and the other end of the water circulation pump 61 is connected to the cooler 62. The cooler 62 is also connected to a second filter 63, which second filter 63 is connected to the expansion motor 20 via a third valve 64, i.e. the third valve 64 is arranged between the second filter 63 and the expansion motor 20. When the expansion power machine 20 works, the third valve 64 is opened, the circulating water pump 61 conveys water in the vapor-liquid separation device 50 to the cooler 62, the water is cooled by the cooler 62, filtered by the second filter 63 and conveyed to the expansion power machine 20.
In some embodiments, a water replenishing pump 71 and a water replenishing electric valve 72 are further included, and the water replenishing pump 71 is used for replenishing purified water. One end of the water replenishing pump 71 is connected with an external water source, and the other end is connected with the vapor-liquid separation device 50. A water replenishing electric valve 72 is further provided in a pipe between the water replenishing pump 71 and the vapor-liquid separating device 50. The vapor-liquid separator 50 is provided with a liquid level sensor 83. When the steam-liquid separation device is started, the liquid level sensor 83 detects whether the liquid in the steam-liquid separation device 50 is at a middle water level, and if the liquid is lower than the middle water level, the water replenishing pump 71 and the water replenishing electric valve 72 work; when the liquid level sensor 83 detects that the water level reaches the middle level, the water replenishing pump 71 and the water replenishing electric valve 72 stop operating. The level sensor 83 may also be in operation at all times during operation. When the water level is lower than the preset value, the water replenishing pump 71 and the water replenishing electric valve 72 operate. When the water level reaches a preset value, the water replenishing pump 71 and the water replenishing electric valve 72 stop working.
In some embodiments, the first valve 11 is an electrically operated valve that can be automatically opened and closed.
In some embodiments, a plurality of sensors can be further arranged for detecting parameters such as pressure, temperature and the like of the preset position, and when the parameters such as the pressure, the temperature and the like of the preset position deviate from the preset values, the system alarms and stops. The sensors may include a temperature sensor 82 and a pressure sensor 81, which may be plural in number and disposed at a plurality of preset locations in the system. For example, a pressure sensor 81 and a temperature sensor 82 may be provided on the vapor-liquid separating device 50 to detect the state of the vapor-liquid separating device 50; a pressure sensor 81 and a temperature sensor 82 may be provided at the lubrication fluid inlet of the expansion motor 20 to detect the pressure and temperature of the water entering the expansion motor system; a pressure sensor 81 and a temperature sensor 82 may be provided at the first filter 30.
In some embodiments, the vapor-liquid separation device 50 may be a vapor-liquid separator.
The utility model provides an expander system's working process as follows:
after starting up, the expander system carries out self-checking: firstly, checking whether the liquid level sensor 83 reaches the middle water level, if the liquid level sensor is lower than the middle water level, the water replenishing pump 71 and the water replenishing electric valve 72 work, and water is extracted from an external water source and is input into the vapor-liquid separation device 50; if the liquid level sensor 83 indicates that the water reaches the middle water level, the water replenishing pump 71 and the water replenishing electric valve 72 stop working; the first valve 11 is opened, the pressure in the first filter 30 is increased, whether the pressure value and the temperature value are within preset values is detected by using the pressure sensor 81 and the temperature sensor 82 which are arranged on the first filter 30, if the pressure value and the temperature value deviate from the preset values, the first valve 11 is closed, the second valve 12 is opened to reach an angle of 30%, the pressure in the first filter 30 is exhausted, and a fault alarm is output.
After the power-on self-test is normal, the circulating water pump 61 is operated, the third valve 64 is opened, and the second valve 12 operates at a preset speed. At this time, the compressed fluid from the outside enters the expansion power machine 20, so that the expansion power machine 20 drives the generator; at the same time, the fluid enters the vapor-liquid separation device 50. Vapor-liquid separation is performed in the vapor-liquid separating device 50, and moisture is deposited on the bottom of the vapor-liquid separating device 50. Then, the water enters the expansion power machine 20 through the circulating water pump 61, the cooler 62 and the second filter 63, and the expansion power machine 20 is lubricated, cooled and sealed. In addition, when the generator speed is constant at a preset value, the second valve 12 stops operating. When the output power of the generator changes, the second valve 12 automatically adjusts the opening angle to the optimal position according to the change so as to maintain the output power of the generator constant. Through the frequency converter 90, the electric power output by the generator is inverted into a standard working power supply which can be connected to a power grid.
In the operation process, the liquid level sensor 83, the water replenishing pump 71 and the water replenishing electric valve 72 can automatically replenish water from an external water source according to the change of the water in the vapor-liquid separation device 50. The pressure sensor 81 and the temperature sensor 82 continuously detect the pressure, temperature and other states at the positions, and if the pressure, temperature and other states deviate from preset values, an alarm is given to stop the machine.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An expansion machine system is characterized by comprising a first valve, a second valve, a first filter, an expansion power machine, a vapor-liquid separation device and a lubricating liquid circulation device;
the expansion motor is configured to be connected to a load for driving the load;
the first valve is connected with the inlet of the first filter, and the expansion power machine is connected with the outlet of the first filter; the inlet of the vapor-liquid separation device is connected with the expansion power machine;
one end of the lubricating liquid circulating device is connected with the outlet of the vapor-liquid separation device, and the other end of the lubricating liquid circulating device is connected with the expansion power machine; the lubricating liquid circulating device is configured to convey liquid in the vapor-liquid separation device to the expansion power machine for cooling, sealing and lubricating of the expansion power machine;
the second valve is arranged between the first filter and the expansion power machine, the second valve is configured to adjust the opening angle of the second valve according to the change of the output power of the load, and the second valve stops working when the output power of the load is constant.
2. The expander system of claim 1, wherein the lubricant circulation device comprises a circulating water pump, a cooler, a second filter, and a third valve; one end of the circulating water pump is connected with an outlet of the vapor-liquid separation device, the other end of the circulating water pump is connected with the cooler, the cooler is connected with the second filter, and the second filter is connected with the expansion power machine through the third valve.
3. The expander system of claim 1, wherein said liquid in said vapor-liquid separation device is water.
4. The expander system of claim 1, further comprising a make-up pump and a make-up solenoid valve, the make-up pump being connected to the vapor-liquid separation device through the make-up solenoid valve, the make-up pump being configured to deliver water from an external water source to the vapor-liquid separation device when a level of liquid in the vapor-liquid separation device is below a predetermined value; the water replenishment electric valve is configured to be in an open state when the water replenishment pump operates.
5. The expander system of claim 4, further comprising a liquid level sensor disposed within the vapor-liquid separation device and configured to be capable of detecting a level of liquid within the vapor-liquid separation device.
6. The expander system of claim 1, wherein the expansion motor is a single screw expansion motor.
7. The expander system of claim 1, further comprising at least one temperature sensor and at least one pressure sensor, the at least one temperature sensor and the at least one pressure sensor being disposed at preset locations, the at least one temperature sensor and the at least one pressure sensor being configured for monitoring a pressure and a temperature, respectively, at the preset locations, and when the monitored pressure and/or temperature deviates from a preset value.
8. The expander system of claim 7, wherein the at least one temperature sensor comprises a first temperature sensor disposed on the vapor-liquid separation device, a second temperature sensor disposed at a lubrication fluid inlet of the expansion motor, and a third temperature sensor disposed on the first filter; the at least one pressure sensor includes a first pressure sensor disposed on the vapor-liquid separation device, a second pressure sensor disposed at a lubrication fluid inlet of the expansion power machine, and a third pressure sensor disposed on the first filter.
9. A power generation system, comprising:
the expander system of any one of claims 1-8;
the power generator is connected with the expansion power machine of the expansion machine system and is driven by the expansion power machine.
10. The power generation system of claim 9, further comprising a frequency converter connected to the generator such that the power at the output of the generator is inverted through the frequency converter to a standard operating power source that can be grid-connected to a power grid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022600940.8U CN213574229U (en) | 2020-11-12 | 2020-11-12 | Expander system and power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022600940.8U CN213574229U (en) | 2020-11-12 | 2020-11-12 | Expander system and power generation system |
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| CN213574229U true CN213574229U (en) | 2021-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253257A (en) * | 2020-11-12 | 2021-01-22 | 意朗实业（上海）有限公司 | Expander system and power generation system |
| CN112253257B (en) * | 2020-11-12 | 2024-06-07 | 意朗实业（上海）有限公司 | Expander system and power generation system |
-
2020
- 2020-11-12 CN CN202022600940.8U patent/CN213574229U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253257A (en) * | 2020-11-12 | 2021-01-22 | 意朗实业（上海）有限公司 | Expander system and power generation system |
| CN112253257B (en) * | 2020-11-12 | 2024-06-07 | 意朗实业（上海）有限公司 | Expander system and power generation system |
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