CN210087487U - Device for solving problems of pulsation of air flow at outlet of supercharger and cold state leakage in distributed energy system - Google Patents
Device for solving problems of pulsation of air flow at outlet of supercharger and cold state leakage in distributed energy system Download PDFInfo
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- CN210087487U CN210087487U CN201920340591.5U CN201920340591U CN210087487U CN 210087487 U CN210087487 U CN 210087487U CN 201920340591 U CN201920340591 U CN 201920340591U CN 210087487 U CN210087487 U CN 210087487U
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Abstract
The utility model relates to a device for solving the pulsation of air flow at the outlet of a supercharger and the cold leakage in a distributed energy system, a nitrogen gas group is connected with the air inlet at one end of a gas supercharger through a pipeline, an electric adjusting throttle valve is arranged on the pipeline, and an electric discharge valve is connected at the air outlet at the other end of the gas supercharger; four unloading valves are installed on the gas conveying pipeline: the three-way valve, the four-way valve, the first unloading valve and the second unloading valve form two groups of symmetrical balanced electromagnetic pressure relief valves, the ratio obtained by dividing the ratio of the actual load to the rated load of the gas turbine by the rated air supply quantity of the supercharger is used for determining the logic control mode of the actual air supply quantity of the gas supercharger, the actual air supply quantity is controlled through the action of the four unloading valves, the problem that a left cylinder and a right cylinder do work unevenly is effectively solved, and the airflow pulsation resonance is eliminated; the electric barring gear and the nitrogen gas unit are designed, and automatic nitrogen filling is realized for the booster pipeline in the starting and stopping stage.
Description
Technical Field
The utility model relates to a booster compressor field specifically says, relates to a solve among distributed energy system booster compressor export air current pulsation and cold state device of leaking.
Background
The distributed energy system has the characteristics of high efficiency, environmental protection and convenient start and stop, arouses the enthusiasm of a knowledgeable person for developing a novel energy supply system, and the small-area distributed energy supply advocates the popularization and application of natural gas cogeneration as one of effective energy-saving and environment-friendly energy supply modes.
The gas booster compressor is more in present distributed energy system's type, mainly there are centrifugal booster compressor, reciprocating type booster compressor, screw booster compressor three kinds, wherein reciprocating type booster compressor is tried the wide pressure range on, efficient, strong adaptability's characteristics and is widely used in small area type distributed energy system, reciprocating type booster compressor's structure is complicated, it is discontinuous to exhaust, cause the air current pulsation, jar do work unbalance produces air current pulsation resonance easily, and because there is the unable pressurize of the unit in the cold condition between piston and the cylinder, start at every turn and stop and need fill nitrogen replacement air, full load starter motor power consumptive great scheduling shortcoming. Therefore, there is a need for a device to solve the problems of uneven load distribution and cold leakage of the reciprocating turbochargers in the distributed energy system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design reasonable, the system is perfect, can solve among the distributed energy system booster compressor export air current pulsation and cold state device of leaking to provide solution.
The utility model provides a technical scheme that above-mentioned problem adopted is: a device for solving the problems of supercharger outlet airflow pulsation and cold leakage in a distributed energy system comprises a gas pipeline, a supercharger motor, a gas supercharger, a lubricating oil tank and a gas turbine, wherein the supercharger motor drives the gas supercharger which is provided with a left supercharger cylinder and a right supercharger cylinder which are symmetrically distributed in the left-right direction; the lubricating oil tank is used for providing lubrication and cooling for bearings of a supercharger motor and a gas supercharger; the method is characterized in that: the device also comprises a nitrogen gas group, wherein the nitrogen gas group is connected with an air inlet at one end of the gas booster through a pipeline, an electric adjusting throttle valve is arranged on the pipeline, and an electric discharge valve is connected with an air outlet at the other end of the gas booster; the gas pipeline is connected with a left main conveying pipeline, a right main conveying pipeline and a right auxiliary conveying pipeline; the left conveying main pipeline is branched into three branches, the tail ends of the three pipelines are respectively introduced into a left air cylinder of the supercharger, and a third unloading valve and a fourth unloading valve are respectively arranged on the two pipelines; the tail end of the right conveying main pipeline is communicated with a supercharger right cylinder; the right conveying auxiliary pipeline is branched into two branches, the tail ends of the two pipelines are both introduced into a right cylinder of the supercharger, and a first unloading valve and a second unloading valve are respectively arranged on the two pipelines; the gas outlet of the gas supercharger is connected with a gas output pipeline, the gas output pipeline close to the gas outlet is branched with an unloading bypass pipeline, the unloading bypass pipeline is provided with a one-return electromagnetic valve and an unloading bypass valve, and the one-return electromagnetic valve and the unloading bypass valve are arranged in parallel; the tail end of the gas output pipeline is branched into two paths, one path of pipeline leads to the gas booster, a gas outlet throttling orifice plate is arranged on the path of pipeline, the other path of pipeline leads to the gas turbine, and a gas front module is arranged on the path of pipeline.
Preferably, the device further comprises an electric barring gear, and the electric barring gear is connected with the gas supercharger.
Preferably, the device also comprises a waste heat boiler, a steam turbine, a smoke type lithium bromide unit, a steam type lithium bromide unit and a heat exchanger; the waste heat boiler and the smoke type lithium bromide unit are both connected with the gas turbine, refrigerant water of the smoke type lithium bromide unit enters the gas turbine through the heat exchanger, the waste heat boiler is connected with the steam turbine, and the steam turbine is connected with the steam type lithium bromide unit.
Preferably, the last gas inlet orifice plate that installs of gas pipeline.
Preferably, be provided with spindle nose oil pump and oil tank heater in the lubricating-oil tank, lubricating-oil tank and booster motor pass through the oil circuit and connect, install plate heat exchanger and oil filter on the oil circuit.
In order to solve the technical problem, the utility model discloses still provide another technical scheme: a method for solving the problems of the pulsation of the gas flow at the outlet of a supercharger and the cold leakage in a distributed energy system adopts the device and comprises the following steps:
the method comprises the following steps: before the gas supercharger is started, the automatic turning gear is connected with a main shaft connecting disc of the gas supercharger through a gear for two circles, then an electric adjusting throttle valve is opened, a nitrogen gas group injects nitrogen into the gas supercharger, an electric exhaust valve is opened to exhaust the nitrogen into the atmosphere, and the air in the gas supercharger is replaced;
step two: the natural gas enters a left cylinder and a right cylinder of the supercharger through a gas pipeline and a gas inlet throttling orifice plate, the gas supercharger is started, an electric adjusting throttling valve is closed, nitrogen in a system is replaced by the natural gas, a shaft head oil pump is started, and supercharger lubricating oil enters a bearing chamber of a supercharger motor and the gas supercharger through a plate heat exchanger and an oil filter;
step three: determining a logic control mode of the actual air supply quantity of the gas supercharger according to a ratio obtained by dividing the ratio of the actual load to the rated load of the gas turbine by the rated air supply quantity of the gas supercharger, wherein when the ratio is 0-0.25, a first unloading valve is opened, when the ratio is 0.25-0.5, a fourth unloading valve is opened, when the ratio is 0.5-0.75, a second unloading valve is opened, when the ratio is 0.75-1, a third unloading valve is opened, and the actual air supply quantity is controlled through the action of the four unloading valves;
step four: the pressure at the outlet of the gas booster is controlled by a return electromagnetic valve and an unloading bypass valve, so that the requirement of the gas inlet of the gas turbine is met;
step five: the gas after acting of the gas supercharger enters a gas turbine through a gas front-end module, the exhaust gas of the gas turbine enters a waste heat boiler, the steam discharged by the waste heat boiler enters a steam turbine, the flue gas of the gas turbine enters a flue gas type lithium bromide unit for refrigeration/heating, the steam after acting of the steam turbine enters a steam type lithium bromide unit, and the refrigerant water of the flue gas type lithium bromide unit enters the gas turbine through a heat exchanger for air intake cooling.
Compared with the prior art, the utility model, have following advantage and effect: the third unloading valve, the fourth unloading valve, the first unloading valve and the second unloading valve form two groups of symmetrical balanced electromagnetic pressure relief valves, the ratio obtained by dividing the ratio of the actual load to the rated load of the gas turbine by the rated air supply quantity of the supercharger is used for determining the logic control mode of the actual air supply quantity of the gas supercharger, the actual air supply quantity is controlled through the action of the four unloading valves, the problem that the left cylinder and the right cylinder do unbalanced work is effectively solved, the pressure at the outlet of the gas supercharger is controlled through a one-return electromagnetic valve and an unloading bypass valve, the requirement of an air inlet of the gas turbine is met, the running time of the unloading valves is recorded at the same time, the symmetrical running of the unloading valves is guaranteed, the unbalanced work done by the cylinders at two sides is reduced, and; an electric barring gear and a nitrogen gas unit are designed, automatic nitrogen charging is realized in a booster pipeline in the starting and stopping stage, the automatic barring gear is operated during starting, and the workload of workers in the starting and stopping process is reduced; the gas booster compressor stably and efficiently operates, waste heat is utilized by the device to the maximum effect, and the operation efficiency of the unit is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. a supercharger motor, 2, a gas supercharger, 3, a supercharger right cylinder, 4, a supercharger left cylinder, 5, a first unloading valve, 6, a second unloading valve, 7, a third unloading valve, 8, a fourth unloading valve, 9, a lubricating oil tank, 10, a spindle head oil pump, 11, an oil tank heater, 12, a plate heat exchanger, 13, an oil filter, 14, a gas front module, 15, a gas turbine, 16, a waste heat boiler, 17, a steam turbine, 18, a flue gas type lithium bromide unit, 19, a steam type lithium bromide unit, 20, a heat exchanger, 21, an electric regulating throttle valve, 22, a nitrogen gas unit, 23, a return electromagnetic valve, 24, an unloading bypass valve, 25, a gas pipeline, 26, an electric barring gear, 27, an electric discharge valve, 28, a gas inlet throttle orifice plate, 29, a gas outlet throttle orifice plate, 30, a left main conveying pipeline, 31, a right main conveying pipeline, 32. right delivery auxiliary pipeline, 33, gas output pipeline, 34, unloading bypass pipeline, 35 and oil way.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
See fig. 1.
The embodiment is a device for solving the pulsation of the air flow at the outlet of the supercharger and the cold state leakage in the distributed energy system, and the device comprises a gas pipeline 25, a supercharger motor 1, a gas supercharger 2, a lubricating oil tank 9, a gas turbine 15, an electric barring gear 26, a waste heat boiler 16, a steam turbine 17, a flue gas type lithium bromide unit 18, a steam type lithium bromide unit 19, a nitrogen gas unit 22 and a heat exchanger 20.
In the present embodiment, the electric barring device 26 is connected to the gas turbocharger 2. Before the gas booster compressor starts, the electric barring gear 26 and the gear of the main shaft of the gas booster compressor are meshed and coiled for two circles, so that the workload of workers in the starting and stopping processes is reduced, and the safe operation can be guaranteed.
In the embodiment, a supercharger motor 1 drives a gas supercharger 2, the gas supercharger 2 is provided with a supercharger left cylinder 4 and a supercharger right cylinder 3 which are distributed in bilateral symmetry, and a lubricating oil tank 9 is used for lubricating and cooling bearings of the supercharger motor 1 and the gas supercharger 2; a spindle head oil pump 10 and an oil tank heater 11 are arranged in a lubricating oil tank 9, the lubricating oil tank 9 is connected with a supercharger motor 1 through an oil path 35, and a plate type heat exchanger 12 and an oil filter 13 are arranged on the oil path 35.
In this embodiment, the nitrogen gas group 22 is connected to the gas inlet at one end of the gas booster 2 through a pipeline, and the pipeline is provided with an electric regulating throttle valve 21, and the gas outlet at the other end of the gas booster 2 is connected to an electric exhaust valve 27; the nitrogen gas group 22 injects nitrogen gas into the supercharger system through the electrically-operated throttle valve 21, and discharges the nitrogen gas into the atmosphere through the electrically-operated discharge valve 27 to displace air in the system.
In this embodiment, a gas inlet orifice 28 is installed on the gas pipeline 25. The gas pipeline 25 is connected with a left main conveying pipeline 30, a right main conveying pipeline 31 and a right auxiliary conveying pipeline 32; the left conveying main pipeline 30 is branched into three branches, the tail ends of the three pipelines are all led into a left air cylinder 4 of the supercharger, and a third unloading valve 7 and a fourth unloading valve 8 are respectively arranged on the two pipelines. The tail end of the right main conveying pipeline 31 is introduced into a supercharger right cylinder 3; the right delivery auxiliary pipeline 32 is branched into two, the tail ends of the two pipelines are both led into the right cylinder 3 of the supercharger, and the first unloading valve 5 and the second unloading valve 6 are respectively arranged on the two pipelines. The third unloading valve 7, the fourth unloading valve 8, the first unloading valve 5 and the second unloading valve 6 form two groups of symmetrical balanced electromagnetic pressure relief valves.
In this embodiment, a gas outlet of the gas turbocharger 2 is connected to a gas outlet pipe 33, an unloading bypass pipe 34 is branched from the gas outlet pipe 33 near the gas outlet, the unloading bypass pipe 34 is provided with a return solenoid valve 23 and an unloading bypass valve 24, and the return solenoid valve 23 and the unloading bypass valve 24 are arranged in parallel. The pressure at the outlet of the gas booster 2 is controlled by a return solenoid valve 23 and an unloading bypass valve 24 to meet the requirements of the gas inlet of the gas turbine 15.
In this embodiment, the end of the gas output pipe 33 branches into two pipes, one of which leads to the gas booster 2 and is provided with the gas outlet orifice plate 29, the other of which leads to the gas turbine 15 and is provided with the gas front module 14. The waste heat boiler 16 and the smoke type lithium bromide unit 18 are both connected with the gas turbine 15, refrigerant water of the smoke type lithium bromide unit 18 enters the gas turbine 15 through the heat exchanger 20, the waste heat boiler 16 is connected with the steam turbine 17, and the steam turbine 17 is connected with the steam type lithium bromide unit 19.
In this embodiment, a method for solving the problem of pulsation of the gas flow at the outlet of the supercharger and cold leakage in the distributed energy system includes the following steps:
the method comprises the following steps: before the gas supercharger 2 is started, the automatic turning gear 26 is connected with a main shaft connecting disc of the gas supercharger 2 through a gear for two circles, then the electric adjusting throttle valve 21 is opened, the nitrogen gas group 22 injects nitrogen gas into the gas supercharger 2, the electric exhaust valve 27 is opened to exhaust the nitrogen gas into the atmosphere, and the air in the gas supercharger 2 is replaced;
step two: the natural gas enters a supercharger left cylinder 4 and a supercharger right cylinder 3 through a gas pipeline 25 and a gas inlet throttle orifice 28, the gas supercharger 2 is started, the electric adjusting throttle valve 21 is closed, nitrogen in the system is replaced by the natural gas, the shaft head oil pump 10 is started, and the supercharger lubricating oil enters a bearing chamber of the supercharger motor 1 and the gas supercharger 2 through the plate heat exchanger 12 and the oil filter 13;
step three: determining a logic control mode of the actual air supply quantity of the gas booster 2 according to a ratio obtained by dividing the ratio of the actual load to the rated load of the gas turbine 15 by the rated air supply quantity of the gas booster 2, when the ratio is 0-0.25, opening the first unloading valve 5, when the ratio is 0.25-0.5, opening the fourth unloading valve 8, when the ratio is 0.5-0.75, opening the second unloading valve 6, when the ratio is 0.75-1, opening the third unloading valve 7, and controlling the actual air supply quantity through the action of the four unloading valves;
step four: the pressure at the outlet of the gas booster 2 is controlled by a return electromagnetic valve 23 and an unloading bypass valve 24, so that the requirement of the gas inlet of the gas turbine 15 is met;
step five: the gas after the gas booster 2 does work enters a gas turbine 15 through a gas front module 14, the exhaust gas of the gas turbine 15 enters a waste heat boiler 16, the steam discharged by the waste heat boiler enters a steam turbine 17, the flue gas of the gas turbine 15 enters a flue gas type lithium bromide unit 18 for cooling/heating, the steam after the gas turbine 17 does work enters a steam type lithium bromide unit 19, and the refrigerant water of the flue gas type lithium bromide unit 18 enters the gas turbine 15 through a heat exchanger 20 for gas inlet cooling.
The embodiments described in this specification may have different shapes of parts, names, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the inventive concept structure, characteristics and principle are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The device comprises a gas pipeline (25), a supercharger motor (1), a gas supercharger (2), a lubricating oil tank (9) and a gas turbine (15), wherein the supercharger motor (1) drives the gas supercharger (2), and the gas supercharger (2) is provided with a left supercharger cylinder (4) and a right supercharger cylinder (3) which are distributed in a bilateral symmetry manner; the lubricating oil tank (9) is used for providing lubrication and cooling for bearings of the supercharger motor (1) and the gas supercharger (2); the method is characterized in that: the device is characterized by further comprising a nitrogen gas group (22), wherein the nitrogen gas group (22) is connected with a gas inlet at one end of the gas booster (2) through a pipeline, an electric adjusting throttle valve (21) is installed on the pipeline, and a gas outlet at the other end of the gas booster (2) is connected with an electric discharge valve (27); the gas pipeline (25) is connected with a left main conveying pipeline (30), a right main conveying pipeline (31) and a right auxiliary conveying pipeline (32); the left conveying main pipeline (30) is branched into three branches, the tail ends of the three pipelines are respectively introduced into a left air cylinder (4) of the supercharger, and a third unloading valve (7) and a fourth unloading valve (8) are respectively arranged on the two pipelines; the tail end of the right main conveying pipe (31) is introduced into a right cylinder (3) of a supercharger; the right conveying auxiliary pipeline (32) is branched into two branches, the tail ends of the two pipelines are both led into a supercharger right cylinder (3), and a first unloading valve (5) and a second unloading valve (6) are respectively arranged on the two pipelines; a gas output pipeline (33) is connected to a gas outlet of the gas supercharger (2), an unloading bypass pipeline (34) is branched from the gas output pipeline (33) close to the gas outlet, a one-return electromagnetic valve (23) and an unloading bypass valve (24) are installed on the unloading bypass pipeline (34), and the one-return electromagnetic valve (23) and the unloading bypass valve (24) are arranged in parallel; the tail end of the gas output pipeline (33) is branched into two paths, one path of pipeline leads to the gas booster (2), a gas outlet throttling orifice plate (29) is arranged on the pipeline, the other path of pipeline leads to the gas turbine (15), and a gas front module (14) is arranged on the pipeline.
2. The device for solving the problems of the pulsation of the airflow at the outlet of the supercharger and the cold leakage in the distributed energy system according to claim 1, is characterized in that: the device also comprises an electric barring gear (26), wherein the electric barring gear (26) is connected with the gas supercharger (2).
3. The device for solving the problems of the pulsation of the airflow at the outlet of the supercharger and the cold leakage in the distributed energy system according to claim 1, is characterized in that: the device also comprises a waste heat boiler (16), a steam turbine (17), a smoke type lithium bromide unit (18), a steam type lithium bromide unit (19) and a heat exchanger (20); the waste heat boiler (16) and the smoke type lithium bromide unit (18) are connected with the gas turbine (15), refrigerant water of the smoke type lithium bromide unit (18) enters the gas turbine (15) through the heat exchanger (20), the waste heat boiler (16) is connected with the steam turbine (17), and the steam turbine (17) is connected with the steam type lithium bromide unit (19).
4. The device for solving the problems of the pulsation of the airflow at the outlet of the supercharger and the cold leakage in the distributed energy system according to claim 1, is characterized in that: and a gas inlet throttling orifice plate (28) is arranged on the gas pipeline (25).
5. The device for solving the problems of the pulsation of the airflow at the outlet of the supercharger and the cold leakage in the distributed energy system according to claim 1, is characterized in that: a shaft head oil pump (10) and an oil tank heater (11) are arranged in the lubricating oil tank (9), the lubricating oil tank (9) is connected with the supercharger motor (1) through an oil way (35), and a plate type heat exchanger (12) and an oil filter (13) are installed on the oil way (35).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920340591.5U CN210087487U (en) | 2019-03-18 | 2019-03-18 | Device for solving problems of pulsation of air flow at outlet of supercharger and cold state leakage in distributed energy system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920340591.5U CN210087487U (en) | 2019-03-18 | 2019-03-18 | Device for solving problems of pulsation of air flow at outlet of supercharger and cold state leakage in distributed energy system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030092A (en) * | 2019-03-18 | 2019-07-19 | 华电电力科学研究院有限公司 | The device and method of the pulsation of supercharger exit flow and cold conditions leakage in a kind of solution distributed energy resource system |
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2019
- 2019-03-18 CN CN201920340591.5U patent/CN210087487U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030092A (en) * | 2019-03-18 | 2019-07-19 | 华电电力科学研究院有限公司 | The device and method of the pulsation of supercharger exit flow and cold conditions leakage in a kind of solution distributed energy resource system |
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