CN209976589U - Steam pipeline system for steam screw expansion generator set - Google Patents
Steam pipeline system for steam screw expansion generator set Download PDFInfo
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- CN209976589U CN209976589U CN201920547529.3U CN201920547529U CN209976589U CN 209976589 U CN209976589 U CN 209976589U CN 201920547529 U CN201920547529 U CN 201920547529U CN 209976589 U CN209976589 U CN 209976589U
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Abstract
The utility model discloses a steam conduit system for steam screw rod expansion generating set, including the vapor trunk line, through the constant diameter tee bend with blow-down pipe, the setting that the vapor trunk line links to each other are in pneumatic quick closing valve and setting on the vapor trunk line are in pneumatic quick opening valve on the blow-down pipe, be provided with on the vapor trunk line and be located the stop valve that admits air in pneumatic quick closing valve the place ahead. The stable starting operation and the safe shutdown in an emergency power-off state of the unit are realized by opening and closing the pneumatic quick-closing valve and the pneumatic quick-opening valve.
Description
Technical Field
The utility model relates to a steam screw rod expansion generating set steam flow technical field, concretely relates to steam pipeline system for steam screw rod expansion generating set.
Background
A large amount of low-grade waste heat resources exist in China, and the screw expansion generator set can convert heat energy into electric energy by utilizing the low-grade waste heat resources, so that the screw expansion generator set has strategic significance of energy conservation and emission reduction, and obtains good economic, environmental and social benefits for enterprises.
The steam screw expansion generator set utilizes steam kinetic energy to drive the generator to generate electricity and output electric energy, but the steam pipeline system of the generator set is emptied when the machine cannot be stopped, and extra energy is wasted due to the fact that extra motor thermal systems are needed for lubricating oil.
Disclosure of Invention
The utility model aims at providing a steam pipeline system that is used for steam screw rod expansion generating set that steam admits air when the start, cuts off admitting air when the outage to the not enough of above-mentioned technique.
In order to realize the above purpose, the utility model discloses a steam conduit system for steam screw rod expansion generating set, including the steam trunk line, through the constant diameter tee bend with blow-down pipe, the setting that the steam trunk line links to each other are in pneumatic quick-closing valve and setting on the steam trunk line are in pneumatic quick-opening valve on the blow-down pipe, be provided with on the steam trunk line and be located the stop valve that admits air in pneumatic quick-closing valve the place ahead.
Further, be connected with lubricating oil heating pipeline on the water vapor trunk line, lubricating oil heating pipeline is located the stop valve that admits air with between the pneumatic fast valve that closes, lubricating oil heating pipeline loops through heating stop valve and steam heating solenoid valve and links to each other with the oil tank.
Furthermore, a carbon ring sealing steam pipeline is connected to the water steam main pipeline and is positioned between the air inlet stop valve and the pneumatic quick-closing valve, the carbon ring sealing steam pipeline is connected with the screw expander through a sealing stop valve,
further, the air suction filter is connected with a third outlet of the constant-diameter tee joint and is connected with the screw expander through a flow regulating valve.
And the condensate water draining branch pipe is connected with the emptying pipeline and is positioned between the equal-diameter tee joint and the pneumatic quick-opening valve, and a condensate water draining stop valve is arranged on the condensate water draining branch pipe.
Compared with the prior art, the utility model has the advantages of it is following: the steam pipeline system for the steam screw expansion generator set realizes the stable starting operation and the safe shutdown in an emergency power-off state of the unit through the opening and closing of the pneumatic quick closing valve and the pneumatic quick opening valve, and has simple structure and convenient arrangement; the heating of high-pressure steam to lubricating oil is realized by opening and closing the steam heating electromagnetic valve, a part of high-pressure steam is introduced to seal a carbon ring of the screw expander, the work capacity of the screw expander is improved, the air input of the screw expander is controlled through the opening of the flow regulating valve, and the rotation speed of the screw expander is gradually increased.
Drawings
Fig. 1 is a schematic view of a steam pipeline system for a steam screw expansion generator set of the present invention.
Wherein: the system comprises a main steam pipeline 1, an air inlet stop valve 2, a pneumatic quick-closing valve 3, an equal-diameter tee joint 4, an emptying pipeline 5, a pneumatic quick-opening valve 6, a condensed water discharge stop valve 7, an air suction filter 8, a flow regulating valve 9, a carbon ring sealed steam pipeline 10, a sealed stop valve 11, a heating stop valve 12, a lubricating oil heating pipeline 13, a steam heating electromagnetic valve 14, an oil tank 15, a screw expander 16 and a condensed water discharge branch pipe 17.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1, the steam pipeline system for the steam screw expansion generator set comprises a steam main pipeline 1, an emptying pipeline 5 connected with the steam main pipeline 1 through an equal-diameter tee joint 4, an air inlet stop valve 2 arranged on the steam main pipeline 1, a pneumatic quick-closing valve 3 arranged on the steam main pipeline 1 and positioned between the air inlet stop valve 2 and the equal-diameter tee joint 4, a pneumatic quick-opening valve 6 arranged on the emptying pipeline 5, a condensed water discharge branch pipe 17 connected with the emptying pipeline 5 and positioned between the equal-diameter tee joint 4 and the pneumatic quick-opening valve 6, an air suction filter 8 connected with a third outlet of the equal-diameter tee joint 4, a lubricating oil heating pipeline 13 and a carbon ring sealed steam pipeline 10 both connected with the steam main pipeline 1 and positioned between the air inlet stop valve 2 and the pneumatic quick-closing valve 3, and a condensed water discharge stop valve 7 arranged on the condensed water discharge branch pipe 17, the air suction filter 8 is connected with a screw expander 16 through a flow control valve 9, the carbon ring sealing steam pipeline 10 is connected with the screw expander 16 through a sealing stop valve 11, and the lubricating oil heating pipeline 13 is connected with an oil tank 15 through a heating stop valve 12 and a steam heating electromagnetic valve 14 in sequence.
When the machine is started, the air inlet stop valve 2 and the pneumatic quick-closing valve 3 are opened, the pneumatic quick-opening valve 6 is closed, and steam enters the screw expander 16 through the main steam pipeline 1, the air inlet stop valve 2, the pneumatic quick-closing valve 3, the air suction filter 8 and the flow regulating valve 9; meanwhile, the heating stop valve 12 and the sealing stop valve 11 are opened, part of steam enters the oil tank 15 through the lubricating oil heating pipeline 13 to heat lubricating oil, the opening of the steam heating electromagnetic valve 14 is gradually increased, the steam amount entering the oil tank 15 is further controlled, the temperature of the lubricating oil is raised to and kept at the normal working oil temperature, and part of high-pressure steam is led into the screw expander 16 through the carbon ring sealing steam pipeline 10, so that the purpose of carbon ring sealing during the negative pressure of the outlet of the screw expander 16 is realized, and air is prevented from entering the screw expander 16 to influence the work of the screw expander; meanwhile, the opening degree of the flow regulating valve 9 is gradually increased, the water vapor entering the screw expander 16 is increased, the rotating speed of the screw expander 16 is gradually increased, and stable starting is realized; when the unit is in emergency power-off, the pneumatic quick-closing valve 3 is closed, the pneumatic quick-opening valve 6 is opened, the water vapor entering the screw expander is cut off, and the vapor is emptied through the pneumatic quick-opening valve 6, so that the unit is safely and stably stopped.
The utility model is used for steam screw rod expansion generating set's steam conduit system, through opening and being closed of pneumatic quick-closing valve 3 and pneumatic quick-opening valve 6, realize that the steady start operation of unit and emergency power-off state safety are shut down, open and close the heating that realizes high-pressure steam to lubricating oil through steam heating solenoid valve, seal screw rod expander carbocycle through introducing partly high-pressure steam, promote screw rod expander doing work ability, aperture through flow control valve 9, the air input of controlling the screw rod expander, realize the gradual increase of screw rod expander rotational speed.
In this embodiment, the models of the air inlet stop valve, the pneumatic quick-closing valve and the flow regulating valve are all DN200, the model of the pneumatic quick-opening valve is DN150, the models of the condensate water discharge stop valve, the heating stop valve, the sealing stop valve and the steam heating electromagnetic valve are all DN20, the model of the air suction filter is QGX200, and the model of the screw expander is QSE 600A-B.
Claims (5)
1. A steam pipe system for a steam screw expansion generator set, characterized in that: including steam trunk line (1), through constant diameter tee bend (4) with blow-down pipe (5), the setting that steam trunk line (1) links to each other are in pneumatic quick-closing valve (3) and setting on steam trunk line (1) are in pneumatic quick-opening valve (6) on blow-down pipe (5), be provided with on steam trunk line (1) and be located intake stop valve (2) in pneumatic quick-closing valve (3) the place ahead.
2. The steam piping system for a steam screw expansion generator set of claim 1, wherein: be connected with lubricating oil heating pipeline (13) on water vapor trunk line (1), lubricating oil heating pipeline (13) are located intake stop valve (2) with between pneumatic quick-closing valve (3), lubricating oil heating pipeline (13) loop through heating stop valve (12) and steam heating solenoid valve (14) and link to each other with oil tank (15).
3. The steam piping system for a steam screw expansion generator set of claim 1, wherein: be connected with the sealed steam conduit of carbocycle (10) on steam trunk line (1), the sealed steam conduit of carbocycle (10) are located admit air stop valve (2) with between pneumatic quick closing valve (3), the sealed steam conduit of carbocycle (10) link to each other with screw expander (16) through sealed stop valve (11).
4. The steam piping system for a steam screw expansion generator set of claim 1, wherein: and the air suction filter (8) is connected with a third outlet of the equal-diameter tee joint (4), and the air suction filter (8) is connected with the screw expander (16) through a flow regulating valve (9).
5. The steam piping system for a steam screw expansion generator set of claim 1, wherein: the pneumatic quick-opening valve is characterized by further comprising a condensed water drainage branch pipe (17) which is connected with the emptying pipeline (5) and is positioned between the equal-diameter tee joint (4) and the pneumatic quick-opening valve (6), wherein a condensed water drainage stop valve (7) is arranged on the condensed water drainage branch pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920547529.3U CN209976589U (en) | 2019-04-19 | 2019-04-19 | Steam pipeline system for steam screw expansion generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920547529.3U CN209976589U (en) | 2019-04-19 | 2019-04-19 | Steam pipeline system for steam screw expansion generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209976589U true CN209976589U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920547529.3U Active CN209976589U (en) | 2019-04-19 | 2019-04-19 | Steam pipeline system for steam screw expansion generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209976589U (en) |
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2019
- 2019-04-19 CN CN201920547529.3U patent/CN209976589U/en active Active
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