CN218293679U - Steam turbine exhaust steam pressure regulating control equipment - Google Patents
Steam turbine exhaust steam pressure regulating control equipment Download PDFInfo
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- CN218293679U CN218293679U CN202222730603.XU CN202222730603U CN218293679U CN 218293679 U CN218293679 U CN 218293679U CN 202222730603 U CN202222730603 U CN 202222730603U CN 218293679 U CN218293679 U CN 218293679U
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Abstract
The utility model discloses a steam turbine exhaust steam pressure regulating control device, which comprises a machine body assembly, wherein the machine body assembly comprises a steam turbine body, a flash tank, a boiler steam pipe and an exhaust steam pipe; the pressure regulating control mechanism comprises a gas pipe, a pressure sensor, an electromagnetic valve and a steam pump. The utility model discloses a pressure sensor detects the atmospheric pressure data of the exhaust steam after the flash distillation is handled in to the gas transmission pipe, when the data that pressure sensor detected are higher than the threshold value, utilize the pressure release pipe to take part exhaust steam out through the steam pump, be used for reducing the atmospheric pressure of the exhaust steam in the gas transmission pipe, when the data that pressure sensor detected are less than the threshold value, utilize the pressure boost pipe to pour into high temperature high pressure steam in the boiler steam pipe into the gas transmission pipe through the solenoid valve, an atmospheric pressure for improving the exhaust steam, thereby control the atmospheric pressure of the exhaust steam of the steam turbine after the flash distillation is handled, the phenomenon that the exhaust steam atmospheric pressure of the steam turbine is too high or low has been avoided appearing, the result of use of the exhaust steam of the steam turbine has been improved.
Description
The technical field is as follows:
the utility model relates to an exhaust steam regeneration technical field specifically is a steam turbine exhaust steam pressure regulating controlgear.
Background art:
the heat and power cogeneration is that electricity and useful heat are simultaneously generated by a heat engine or a power station, the heat and power cogeneration is that electricity and useful heat and cooling are simultaneously generated from a fuel combustion or a solar heat collector, a steam turbine is one of important equipment in a heat and power cogeneration system and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, a rotor provided with blade rows is made to rotate, and simultaneously, work is performed outwards, exhaust steam is superheated steam with thermal potential energy and is introduced into the steam turbine through a pipeline to convert the thermal potential energy into kinetic energy, the steam which releases the thermal potential energy is exhausted steam after the exhaust steam is exhausted from a steam outlet at the lower part of the steam turbine, the exhaust steam is low-grade energy and cannot be directly utilized under normal conditions, and the exhaust steam can be used after the quality is improved by some adjusting means;
traditional steam turbine exhaust steam is when carrying out regeneration treatment, utilize the flash tank to carry out flash distillation to steam turbine exhaust steam usually, be used for improving the quality of steam turbine exhaust steam, make its temperature and pressure reach regeneration's standard, but steam turbine exhaust steam is after flash distillation treatment, can't carry out accurate control to its atmospheric pressure usually, thereby lead to when steam turbine exhaust steam atmospheric pressure is too high or low excessively, easily cause the influence to the metal mechanical properties of relevant exhaust steam utilization equipment, the result of use of steam turbine exhaust steam has been reduced, for this reason, a steam turbine exhaust steam pressure regulating controlgear is proposed.
The utility model has the following contents:
an object of the utility model is to provide a steam turbine exhaust steam pressure regulating controlgear to solve one of the problem that proposes in the above-mentioned background art.
The utility model discloses by following technical scheme implement: a steam turbine exhaust steam pressure regulating control device comprises
The engine body assembly comprises a steam turbine engine body, a flash tank, a boiler steam pipe and a steam exhaust pipe;
the pressure regulating control mechanism comprises a gas pipe, a pressure sensor, an electromagnetic valve, a steam pump, a pressure relief pipe and a pressure increasing pipe;
the boiler steam pipe is communicated with an air inlet of the steam turbine body, the exhaust steam pipe is arranged on one side of the steam turbine body, which is far away from the boiler steam pipe, the air inlet of the flash tank is communicated with one end of the exhaust steam pipe, which is far away from the steam turbine body, the gas conveying pipe is communicated with an exhaust port of the flash tank, the pressure sensor is arranged on the top of the outer side wall of the gas conveying pipe, the electromagnetic valve is communicated with the outer side wall of the boiler steam pipe, the one end of pressure-increasing pipe communicates in the one end that boiler steam pipe was kept away from to the solenoid valve, the other end of pressure-increasing pipe communicates in the inside of gas-supply pipe, the steam pump is located one side that the flash tank was kept away from to the exhaust pipe, the one end of pressure-releasing pipe communicates in the air inlet of steam pump, the other end of pressure-releasing pipe communicates in the lateral wall bottom of gas-supply pipe.
As further preferable in the present technical solution: the inside wall middle part fixedly connected with honeycomb duct of gas-supply pipe, the one end that the solenoid valve was kept away from to the pressure boost pipe runs through the inside wall of gas-supply pipe and communicates in the lateral wall of honeycomb duct.
As a further preferred aspect of the present invention: the inside wall fixedly connected with heat exchange tube of honeycomb duct, the even intercommunication of one side that the pressure boost pipe was kept away from to the inside wall of heat exchange tube has the shower nozzle.
As a further preferred aspect of the present invention: and an exhaust port of the steam pump is communicated with a boiler steam supply pipe.
As further preferable in the present technical solution: one side fixedly connected with electric cabinet that the steam pump kept away from the boiler steam feed pipe, the display screen is installed to one side that the steam pump was kept away from to the electric cabinet.
As a further preferred aspect of the present invention: the PLC controller is installed at the top of the inner side wall of the electric cabinet, and relays are evenly installed at the bottom of the inner side wall of the electric cabinet.
As further preferable in the present technical solution: the signal output end of the pressure sensor is electrically connected to the signal input end of the PLC through a wire, and the signal output end of the PLC is electrically connected to the signal input end of the display screen through a wire.
As a further preferred aspect of the present invention: the electrical output end of the PLC is electrically connected to the electrical input end of the relay through a wire, and the electrical output end of the relay is electrically connected to the electrical input ends of the electromagnetic valve and the steam pump through a wire.
The utility model has the advantages that: the utility model discloses a pressure sensor detects the atmospheric pressure data of the exhaust steam after the flash distillation is handled in to the gas transmission pipe, when the data that pressure sensor detected are higher than the threshold value, utilize the pressure release pipe to take part exhaust steam out through the steam pump, be used for reducing the atmospheric pressure of the exhaust steam in the gas transmission pipe, when the data that pressure sensor detected are less than the threshold value, utilize the pressure boost pipe to pour into high temperature high pressure steam in the boiler steam pipe into the gas transmission pipe through the solenoid valve, an atmospheric pressure for improving the exhaust steam, thereby control the atmospheric pressure of the exhaust steam of the steam turbine after the flash distillation is handled, the phenomenon that the exhaust steam atmospheric pressure of the steam turbine is too high or low has been avoided appearing, the result of use of the exhaust steam of the steam turbine has been improved.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the gas pipe of the present invention;
fig. 4 is the schematic view of the sectional structure of the electric cabinet of the present invention.
In the figure: 1. a body assembly; 2. a pressure regulating control mechanism; 101. a turbine body; 102. a flash tank; 103. a boiler steam pipe; 104. a steam exhaust pipe; 201. a gas delivery pipe; 202. a pressure sensor; 203. an electromagnetic valve; 204. a steam pump; 205. a pressure relief pipe; 206. a pressure increasing pipe; 41. a flow guide pipe; 42. a heat exchange pipe; 43. a spray head; 44. a boiler steam supply pipe; 45. an electric cabinet; 46. a display screen; 47. a PLC controller; 48. a relay.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1-4, the present invention provides a technical solution: a steam turbine exhaust steam pressure regulating control device comprises
The system comprises a machine body assembly 1, wherein the machine body assembly 1 comprises a steam turbine body 101, a flash tank 102, a boiler steam pipe 103 and a steam exhaust pipe 104;
the pressure regulating control mechanism 2, the pressure regulating control mechanism 2 includes the gas pipe 201, the pressure sensor 202, the electromagnetic valve 203, the steam pump 204, the pressure relief pipe 205 and the pressure increasing pipe 206;
the boiler steam pipe 103 is communicated with an air inlet of the steam turbine body 101, the steam exhaust pipe 104 is arranged on one side, far away from the boiler steam pipe 103, of the steam turbine body 101, an air inlet of the flash tank 102 is communicated with one end, far away from the steam turbine body 101, of the steam exhaust pipe 104, the air delivery pipe 201 is communicated with an air outlet of the flash tank 102, the pressure sensor 202 is installed on the top of the outer side wall of the air delivery pipe 201, the electromagnetic valve 203 is communicated with the outer side wall of the boiler steam pipe 103, one end of the pressure increasing pipe 206 is communicated with one end, far away from the boiler steam pipe 103, of the electromagnetic valve 203, the other end of the pressure increasing pipe 206 is communicated with the inside of the air delivery pipe 201, the steam pump 204 is arranged on one side, far away from the flash tank 102, of the steam exhaust pipe 104, one end of the pressure reducing pipe 205 is communicated with an air inlet of the steam pump 204, and the other end of the pressure reducing pipe 205 is communicated with the bottom of the outer side wall of the air delivery pipe 201.
In this embodiment, specifically: a flow guide pipe 41 is fixedly connected to the middle of the inner side wall of the gas pipe 201, one end, far away from the electromagnetic valve 203, of the pressure increasing pipe 206 penetrates through the inner side wall of the gas pipe 201 and is communicated with the outer side wall of the flow guide pipe 41, a heat exchange pipe 42 is fixedly connected to the inner side wall of the flow guide pipe 41, and one side, far away from the pressure increasing pipe 206, of the inner side wall of the heat exchange pipe 42 is uniformly communicated with spray heads 43; the steam turbine exhaust steam in the gas transmission pipe 201 is preheated by high-temperature high-salt steam through the heat exchange pipe 42 so as to reduce the temperature difference between the steam and the steam turbine exhaust steam, and then the steam in the guide pipe 41 is sprayed into the inside of the gas transmission pipe 201 through the spray head 43 so as to improve the air pressure of the steam turbine exhaust steam in the gas transmission pipe 201.
In this embodiment, specifically: an exhaust port of the steam pump 204 is communicated with a boiler steam supply pipe 44, one side of the steam pump 204, which is far away from the boiler steam supply pipe 44, is fixedly connected with an electric cabinet 45, and one side of the electric cabinet 45, which is far away from the steam pump 204, is provided with a display screen 46; the data received by the PLC 47 is displayed through the display screen 46, so that the data can be conveniently checked by the staff at any time.
In this embodiment, specifically: a PLC (programmable logic controller) 47 is installed at the top of the inner side wall of the electric cabinet 45, relays 48 are evenly installed at the bottom of the inner side wall of the electric cabinet 45, a signal output end of the pressure sensor 202 is electrically connected to a signal input end of the PLC 47 through a wire, a signal output end of the PLC 47 is electrically connected to a signal input end of the display screen 46 through a wire, an electrical output end of the PLC 47 is electrically connected to an electrical input end of the relay 48 through a wire, and an electrical output end of the relay 48 is electrically connected to electrical input ends of the electromagnetic valve 203 and the steam pump 204 through wires; the PLC 47 receives data from the pressure sensor 202 and controls the opening and closing of the solenoid valve 203 and the steam pump 204 through the relay 48.
In this embodiment, specifically: the model of the pressure sensor 202 is MIK-P300G; the PLC controller 47 is model DF-96D.
Working principle or structural principle: when the system is used, high-temperature and high-pressure steam is provided for the steam turbine body 101 through the steam pipe 103 of the boiler, thermal potential energy is converted into kinetic energy through rotation of the steam turbine body 101, the steam turbine exhaust steam is discharged into the flash tank 102 through the exhaust steam pipe 104, the steam turbine exhaust steam is subjected to flash evaporation, the steam turbine exhaust steam subjected to flash evaporation is discharged through the steam pipe 201, pressure data of the steam turbine exhaust steam in the steam pipe 201 is detected through the pressure sensor 202, data of the pressure sensor 202 is received through the PLC 47, the data received by the PLC 47 is displayed through the display screen 46, so that an operator can check the data at any time, when the data detected by the pressure sensor 202 is higher than a threshold value, the steam pump 204 is started to work through the relay 48 by the PLC 47, the working steam pipe 204 uses the pressure relief pipe 205 to draw out the steam turbine exhaust steam 201 to reduce the pressure of the steam turbine in the steam pipe 201, the steam turbine exhaust steam pumped out by the steam pump 204 is conveyed into the boiler through the steam supply pipe 44 for circulating the steam turbine, when the pressure data detected by the pressure sensor 202 reaches the threshold value, the pressure relief pipe 203, the PLC 47 controls the steam pipe to preheat of the steam turbine exhaust steam pipe 41, and the steam pipe 41 controls the steam turbine exhaust steam turbine, and the steam pressure sensor to lower the temperature difference of the steam pipe 41, the air pressure of the steam turbine exhaust steam in the air delivery pipe 201 is improved, when data detected by the pressure sensor 202 reach a threshold value, the electromagnetic valve 203 is closed by the PLC 47 through the relay 48, and then the air pressure of the steam turbine exhaust steam after flash evaporation treatment is controlled, so that the phenomenon that the air pressure of the steam turbine exhaust steam is too high or too low is avoided, and the using effect of the steam turbine exhaust steam is improved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A dead steam pressure regulating control device of a steam turbine is characterized by comprising
The steam turbine comprises a machine body assembly (1), wherein the machine body assembly (1) comprises a steam turbine body (101), a flash tank (102), a boiler steam pipe (103) and a steam exhaust pipe (104);
the pressure regulating control mechanism (2), the pressure regulating control mechanism (2) comprises an air delivery pipe (201), a pressure sensor (202), an electromagnetic valve (203), a steam pump (204), a pressure relief pipe (205) and a pressure increasing pipe (206);
boiler steam pipe (103) communicate in the air inlet of steam turbine body (101), one side that boiler steam pipe (103) were kept away from to steam turbine body (101) is located to steam exhaust pipe (104), the air inlet of flash tank (102) communicates in the one end that steam exhaust pipe (104) kept away from steam turbine body (101), gas-supply pipe (201) communicate in the gas vent of flash tank (102), pressure sensor (202) are installed in the lateral wall top of gas-supply pipe (201), solenoid valve (203) communicate in the lateral wall of boiler steam pipe (103), the one end of booster pipe (206) communicates in the one end that boiler steam pipe (103) were kept away from in solenoid valve (203), the other end of booster pipe (206) communicates in the inside of gas-supply pipe (201), one side that flash tank (102) were kept away from to steam exhaust pipe (104) is located to steam pump (204), the one end of pressure release pipe (205) communicates in the air inlet of steam pump (204), the other end of pressure release pipe (205) communicates in the gas-supply pipe bottom of the lateral wall of gas-supply pipe (201).
2. The steam turbine exhaust steam pressure regulating control device according to claim 1, characterized in that: the inside wall middle part fixedly connected with honeycomb duct (41) of gas-supply pipe (201), the one end that solenoid valve (203) were kept away from in pressure boost pipe (206) runs through the inside wall of gas-supply pipe (201) and communicates in the lateral wall of honeycomb duct (41).
3. The steam turbine exhaust steam pressure regulating control device according to claim 2, characterized in that: the inside wall fixedly connected with heat exchange tube (42) of honeycomb duct (41), one side that booster tube (206) was kept away from to the inside wall of heat exchange tube (42) evenly communicates there is shower nozzle (43).
4. The steam turbine exhaust steam pressure regulating control device according to claim 1, characterized in that: an exhaust port of the steam pump (204) is communicated with a boiler steam supply pipe (44).
5. The steam turbine exhaust steam pressure regulating control device according to claim 4, characterized in that: steam pump (204) keep away from one side fixedly connected with electric cabinet (45) of boiler steam supply pipe (44), display screen (46) are installed to one side that steam pump (204) were kept away from in electric cabinet (45).
6. The steam turbine exhaust steam pressure regulating control device according to claim 5, characterized in that: the PLC controller (47) is installed at the top of the inner side wall of the electric cabinet (45), and the relays (48) are evenly installed at the bottom of the inner side wall of the electric cabinet (45).
7. The steam turbine exhaust steam pressure regulating control device according to claim 6, characterized in that: the signal output end of the pressure sensor (202) is electrically connected to the signal input end of the PLC (47) through a wire, and the signal output end of the PLC (47) is electrically connected to the signal input end of the display screen (46) through a wire.
8. The steam turbine exhaust steam pressure regulating control device according to claim 6, characterized in that: the electrical output end of the PLC (47) is electrically connected to the electrical input end of the relay (48) through a wire, and the electrical output end of the relay (48) is electrically connected to the electrical input ends of the electromagnetic valve (203) and the steam pump (204) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222730603.XU CN218293679U (en) | 2022-10-17 | 2022-10-17 | Steam turbine exhaust steam pressure regulating control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222730603.XU CN218293679U (en) | 2022-10-17 | 2022-10-17 | Steam turbine exhaust steam pressure regulating control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218293679U true CN218293679U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222730603.XU Active CN218293679U (en) | 2022-10-17 | 2022-10-17 | Steam turbine exhaust steam pressure regulating control equipment |
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|---|---|
| CN (1) | CN218293679U (en) |
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2022
- 2022-10-17 CN CN202222730603.XU patent/CN218293679U/en active Active
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