CN214148891U - Steam injection vacuum system of condenser of 300MW subcritical unit - Google Patents
Steam injection vacuum system of condenser of 300MW subcritical unit Download PDFInfo
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- CN214148891U CN214148891U CN202022870929.3U CN202022870929U CN214148891U CN 214148891 U CN214148891 U CN 214148891U CN 202022870929 U CN202022870929 U CN 202022870929U CN 214148891 U CN214148891 U CN 214148891U
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Abstract
The utility model belongs to the technical field of condenser steam jet vacuum system, and discloses a 300MW subcritical unit condenser steam jet vacuum system, which comprises a second vacuum pump, wherein one side of the second vacuum pump is provided with a condenser, one side of the condenser, which is far away from the second vacuum pump, is provided with a steam ejector, one side of the steam ejector, which is far away from the condenser, is provided with an auxiliary steam connector, one side of the auxiliary steam connector, which is close to the steam ejector, is fixedly connected with an auxiliary steam main pipe, one end of the steam ejector, which is close to the auxiliary steam main pipe, is movably connected with a steam ejector parallel pipe, the utility model discloses a cooling liquid pipe and a cooling liquid circulating pipe are arranged on the outer circumferential wall of a steam ejector connecting pipe, so that the steam inside the steam ejector connecting pipe can be cooled, and the problem of poor high-temperature steam treatment effect of the condenser is solved, the problem that the condenser knocks due to unstable air pressure when high-temperature steam is rapidly cooled is also solved.
Description
Technical Field
The utility model belongs to the technical field of condenser steam jet vacuum system, concretely relates to subcritical unit condenser steam jet vacuum system of 300 MW.
Background
The condenser is a heat exchanger for condensing the exhaust steam of the steam turbine into water, and is also called a water re-condenser. The condenser is mainly used in a steam turbine power device and is divided into a water-cooling condenser and an air-cooling condenser.
The steam jet vacuum system of the condenser of the existing 300MW subcritical unit is provided with a vacuum pump, the vacuum pump can cause cavitation during working, so that equipment of the steam jet vacuum system of the condenser of the 300MW subcritical unit is damaged, potential safety hazards and noise pollution are generated during operation of the steam jet vacuum system of the condenser of the 300MW subcritical unit, and energy loss during use of the steam jet vacuum system of the condenser of the 300MW subcritical unit is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 300MW subcritical unit condenser steam jet vacuum system to solve current 300MW subcritical unit condenser steam jet vacuum system's vacuum pump and can take place the cavitation at the during operation phenomenon, thereby lead to the system to produce potential safety hazard and noise pollution's problem when the operation.
In order to achieve the above object, the utility model provides a following technical scheme: a steam jet vacuum system of a condenser of a 300MW subcritical unit comprises a second vacuum pump, wherein a condenser is arranged on one side of the second vacuum pump, a steam ejector is arranged on one side, away from the second vacuum pump, of the condenser, an auxiliary steam connector is arranged on one side, away from the condenser, of the steam ejector, an auxiliary steam main pipe is fixedly connected to one side, close to the steam ejector, of the auxiliary steam connector, one end, close to the auxiliary steam main pipe, of the steam ejector is movably connected with a steam ejector parallel pipe, one end, away from the steam ejector parallel pipe, of the steam ejector is movably connected with a steam ejector connecting pipe, one end, away from the auxiliary steam connector, of the auxiliary steam main pipe is fixedly connected with one end, away from the steam ejector, of the steam ejector connecting pipe, one end of the condenser, which is far away from the steam ejector connecting pipe, is movably provided with a condenser output pipe, and one end of the condenser output pipe, which is far away from the condenser, is fixedly connected with a second vacuum pump.
Preferably, still include first vacuum pump, one side of first vacuum pump is equipped with tubular heat exchanger, one side that first vacuum pump was kept away from to tubular heat exchanger is equipped with the condenser connector, one side fixed mounting that tubular heat exchanger is close to the condenser connector has the female pipe of condenser, tubular heat exchanger keeps away from the one end fixed mounting of the female pipe of condenser has the tubular heat exchanger output tube, tubular heat exchanger's one end and first vacuum pump fixed connection are kept away from to the tubular heat exchanger output tube, tubular heat exchanger's one end and condenser connector fixed connection are kept away from to the female pipe of condenser, tubular heat exchanger's output fixedly connected with tubular heat exchanger parallel pipe, tubular heat exchanger's one end and supplementary female pipe fixed connection are kept away from to the tubular heat exchanger parallel pipe.
Preferably, the outer circumferential wall cover of steam ejector connecting pipe is equipped with the circulation cover, the inside of circulation cover is equipped with the coolant liquid circulating pipe, the outer circumferential wall swing joint of coolant liquid circulating pipe and steam ejector connecting pipe, the equal fixedly connected with coolant liquid pipe in both ends of coolant liquid circulating pipe, the outer circumferential wall fixedly connected with pump machine of coolant liquid pipe.
Preferably, one end of the parallel pipe of the tubular heat exchanger, which is far away from the tubular heat exchanger, is fixedly connected with a tee joint, one end of the parallel pipe of the tubular heat exchanger, which is far away from the tee joint, is fixedly connected with the auxiliary steam main pipe, the other output end of the tee joint is fixedly connected with a circulation main pipe, and one end of the circulation main pipe, which is far away from the tee joint, is fixedly connected with the condenser main pipe.
Preferably, a first manual isolating valve is fixedly mounted on the outer circumferential wall of the auxiliary steam main pipe, and a second manual isolating valve is fixedly mounted on the outer circumferential wall of the circulation main pipe.
Preferably, the outer circumferential wall of the parallel pipe of the tubular heat exchanger is fixedly connected with a flowmeter, and the outer circumferential wall of the auxiliary steam main pipe far away from the auxiliary steam connector is fixedly connected with a regulating valve.
Compared with the prior art, the utility model, following beneficial effect has:
(1) the utility model can utilize the tee joint, the circulation main pipe and the second manual isolation valve to carry out the circulation operation of high-temperature steam to the tee joint, the tee joint to the circulation main pipe, the circulation main pipe to the second manual isolation valve and the second manual isolation valve to the condenser main pipe when the tubular heat exchanger outputs high-temperature steam to the first vacuum pump and the second vacuum pump, thereby carrying out the balanced operation of the steam temperature, avoiding the cavitation phenomenon of the vacuum pump when the high-temperature steam with unbalanced temperature enters the vacuum pump, thereby solving the problems of potential safety hazard and noise pollution caused by the damage to equipment of the steam jet vacuum system of the condenser of the 300MW subcritical unit when the steam jet vacuum system of the condenser of the 300MW subcritical unit is operated, and the problem of energy loss when the steam jet vacuum system of the condenser of the 300MW subcritical unit is used is solved.
(2) The utility model discloses a set up coolant liquid pipe and coolant liquid circulating pipe at the outer periphery wall of steam ejector connecting pipe, can cool down the inside steam of steam ejector connecting pipe and handle the operation, solved the condenser and handled the poor problem of effect to high temperature steam, also avoided high temperature steam unstable when cooling down rapidly, lead to the problem of condenser deflagration.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the coolant circulation tube of the present invention;
FIG. 3 is an enlarged view of the circulation main pipe of the present invention;
in the figure: 1. an auxiliary steam connector; 2. a condenser connector; 3. an auxiliary steam main pipe; 4. a first manual isolation valve; 5. a condenser main pipe; 6. adjusting a valve; 7. a steam ejector in parallel; 8. the tubular heat exchanger is connected with the tubes in parallel; 9. a tubular heat exchanger; 10. an output pipe of the tubular heat exchanger; 11. a first vacuum pump; 12. a steam ejector; 13. a steam ejector connecting pipe; 14. a condenser; 15. a condenser output pipe; 16. a second vacuum pump; 17. a circulating sleeve; 18. a cooling liquid circulation pipe; 19. a coolant tube; 20. a pump machine; 21. a flow meter; 22. a second manual isolation valve; 23. circulating the main pipe; 24. and a tee joint.
Detailed Description
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.
Referring to fig. 1-3, the present invention provides the following technical solutions: a steam jet vacuum system of a condenser of a 300MW subcritical unit comprises a second vacuum pump 16, a condenser 14 is arranged on one side of the second vacuum pump 16, a steam ejector 12 is arranged on one side of the condenser 14 far away from the second vacuum pump 16, an auxiliary steam connector 1 is arranged on one side of the steam ejector 12 far away from the condenser 14, an auxiliary steam main pipe 3 is fixedly connected to one side of the auxiliary steam connector 1 close to the steam ejector 12, a steam ejector parallel pipe 7 is movably connected to one end of the steam ejector 12 close to the auxiliary steam main pipe 3, a steam ejector connecting pipe 13 is movably connected to one end of the steam ejector parallel pipe 7 far away from the steam ejector parallel pipe 7, one end of the auxiliary steam main pipe 3 far away from the auxiliary steam connector 1 is fixedly connected to one end of the steam ejector parallel pipe 7 far away from the steam ejector 12, and one end of the steam ejector connecting pipe 13 far away from the steam ejector 12 is fixedly connected to the condenser 14, a condenser output pipe 15 is movably installed at one end of the condenser 14 far away from the steam ejector connecting pipe 13, one end of the condenser output pipe 15 far away from the condenser 14 is fixedly connected with a second vacuum pump 16, and auxiliary steam can be input into the auxiliary steam connector 1.
Further, the device comprises a first vacuum pump 11, a tubular heat exchanger 9 is arranged on one side of the first vacuum pump 11, a condenser connector 2 is arranged on one side of the tubular heat exchanger 9 away from the first vacuum pump 11, a condenser main pipe 5 is fixedly arranged on one side of the tubular heat exchanger 9 close to the condenser connector 2, a tubular heat exchanger output pipe 10 is fixedly arranged on one end of the tubular heat exchanger 9 away from the condenser main pipe 5, one end of the tubular heat exchanger output pipe 10 away from the tubular heat exchanger 9 is fixedly connected with the first vacuum pump 11, one end of the condenser main pipe 5 away from the tubular heat exchanger 9 is fixedly connected with the condenser connector 2, a tubular heat exchanger parallel pipe 8 is fixedly connected with the output end of the tubular heat exchanger 9, one end of the tubular heat exchanger parallel pipe 8 away from the tubular heat exchanger 9 is fixedly connected with the auxiliary steam main pipe 3, and condensed gas steam can be input into the interior of the condenser connector 2, the condensed steam refers to steam with a high proportion of liquid water.
Further, a circulation sleeve 17 is sleeved on the outer circumferential wall of the steam ejector connecting pipe 13, a cooling liquid circulation pipe 18 is arranged inside the circulation sleeve 17, the cooling liquid circulation pipe 18 is movably connected with the outer circumferential wall of the steam ejector connecting pipe 13, both ends of the cooling liquid circulation pipe 18 are fixedly connected with cooling liquid pipes 19, the outer circumferential wall of the cooling liquid pipes 19 is fixedly connected with a pump machine 20, the pump machine 20 is a common pipeline pump with the model number of 20SG3-14, and the flow rate of the pump is 3m3H, rated power of 0.25Kw and rated voltage of 220V.
Furthermore, a tee joint 24 is fixedly connected to one end, far away from the tubular heat exchanger 9, of the parallel pipe 8 of the tubular heat exchanger, one end, far away from the parallel pipe 8 of the tubular heat exchanger, of the tee joint 24 is fixedly connected with the auxiliary steam main pipe 3, the other output end of the tee joint 24 is fixedly connected with the circulation main pipe 23, one end, far away from the tee joint 24, of the circulation main pipe 23 is fixedly connected with the condenser main pipe 5, and the tee joint 24, the circulation main pipe 23 and the second manual isolation valve 22 are used for conducting circulation operation from high-temperature steam to the tee joint 24, the tee joint 24 to the circulation main pipe 23, the circulation main pipe 23 to the second manual isolation valve 22 and the second manual isolation valve 22 to the condenser main pipe 5, so that balanced operation of steam temperature is conducted.
Specifically, a first manual isolation valve 4 is fixedly installed on the outer circumferential wall of the auxiliary steam main pipe 3, a second manual isolation valve 22 is fixedly installed on the outer circumferential wall of the circulation main pipe 23, and the first manual isolation valve 4 and the second manual isolation valve 22 can achieve the steam stop operation.
It is worth to be noted that the outer circumferential wall of the parallel pipe 8 of the tubular heat exchanger is fixedly connected with a flow meter 21, the outer circumferential wall of the auxiliary steam main pipe 3 far away from the auxiliary steam connector 1 is fixedly connected with a regulating valve 6, and the flow meter 21 can detect the flow rate of the steam inside the parallel pipe 8 of the tubular heat exchanger.
The utility model discloses a theory of operation and use flow: before use, firstly, condensing steam is input into a condenser main pipe 5 through a condenser connector 2, then the input condensing steam is subjected to temperature equalizing operation through a tubular heat exchanger 9, meanwhile, when the tubular heat exchanger 9 outputs heated steam to a first vacuum pump 11, the circulating operation from the steam heating to a tee joint 24, a tee joint 24 to the circulating main pipe 23, the circulating main pipe 23 to a second manual isolation valve 22 and the circulating operation from the second manual isolation valve 22 to the condenser main pipe 5 are carried out through the tee joint 24, the circulating main pipe 23 and the second manual isolation valve 22, so that the steam temperature equalizing operation is carried out, the cavitation phenomenon of the first vacuum pump 11 is avoided when high-temperature steam with uneven air temperature enters the first vacuum pump 11, and the air injection operation of a subcritical unit condenser steam injection vacuum system of the first vacuum pump 11 can be realized;
in the process of the cycle processing of the condensed steam, auxiliary steam is input into an auxiliary steam main pipe 3 through an auxiliary steam connector 1, then switches of a first manual isolating valve 4 and an adjusting valve 6 are opened, so that the auxiliary steam continuously enters a steam ejector parallel pipe 7 through the auxiliary steam main pipe 3, in the process, the condensed steam is also input into the steam ejector parallel pipe 7 through a tubular heat exchanger parallel pipe 8, the mixing operation of the condensed steam and the auxiliary steam is completed, after the mixing operation of the condensed steam and the auxiliary steam is completed, the mixed steam is input into a steam ejector connecting pipe 13 through a steam ejector 12, and as a cooling liquid pipe 19 and a cooling liquid circulating pipe 18 are arranged on the outer circumferential wall of the steam ejector connecting pipe 13, the mixed steam of the condensed steam and the auxiliary steam in the steam ejector connecting pipe 13 can be cooled, then the mixed steam of the condensed gas steam and the auxiliary steam after the cooling treatment operation can pass through the condenser 14, then is output to the condenser output pipe 15 through the processing operation of the condenser 14, and then is input to the second vacuum pump 16 through the condenser output pipe 15, thereby realizing the air injection operation of the subcritical unit condenser steam injection vacuum system of the second vacuum pump 16.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a 300MW subcritical unit condenser steam jet vacuum system, includes second vacuum pump (16), its characterized in that: one side of second vacuum pump (16) is equipped with condenser (14), one side that second vacuum pump (16) was kept away from in condenser (14) is equipped with steam ejector (12), one side that condenser (14) was kept away from in steam ejector (12) is equipped with supplementary steam connector (1), one side fixedly connected with supplementary steam main pipe (3) of supplementary steam connector (1) being close to steam ejector (12), the one end swing joint that steam ejector (12) is close to supplementary steam main pipe (3) has steam ejector parallel pipe (7), the one end swing joint that steam ejector parallel pipe (7) was kept away from in steam ejector (12) has steam ejector connecting pipe (13), the one end that supplementary steam connector (1) was kept away from in supplementary steam main pipe (3) and the one end fixed connection that steam ejector (12) was kept away from in steam ejector parallel pipe (7), steam ejector connecting pipe (13) keep away from the one end and condenser (14) fixed connection of steam ejector (12), the one end movable mounting that steam ejector connecting pipe (13) were kept away from in condenser (14) has condenser output tube (15), condenser (14) were kept away from in condenser output tube (15) one end and second vacuum pump (16) fixed connection.
2. The steam injection vacuum system of the condenser of the 300MW subcritical unit according to claim 1, characterized in that: the device is characterized by further comprising a first vacuum pump (11), one side of the first vacuum pump (11) is provided with a tubular heat exchanger (9), one side of the tubular heat exchanger (9) far away from the first vacuum pump (11) is provided with a condenser connector (2), one side of the tubular heat exchanger (9) close to the condenser connector (2) is fixedly provided with a condenser female pipe (5), one end of the tubular heat exchanger (9) far away from the condenser female pipe (5) is fixedly provided with a tubular heat exchanger output pipe (10), one end of the tubular heat exchanger output pipe (10) far away from the tubular heat exchanger (9) is fixedly connected with the first vacuum pump (11), one end of the condenser female pipe (5) far away from the tubular heat exchanger (9) is fixedly connected with the condenser connector (2), and the output end of the tubular heat exchanger (9) is fixedly connected with a tubular heat exchanger parallel pipe (8), one end of the parallel pipe (8) of the tubular heat exchanger, which is far away from the tubular heat exchanger (9), is fixedly connected with the auxiliary steam main pipe (3).
3. The steam injection vacuum system of the condenser of the 300MW subcritical unit according to claim 2, characterized in that: the outer circumferential wall cover of steam ejector connecting pipe (13) is equipped with circulation cover (17), the inside of circulation cover (17) is equipped with coolant liquid circulating pipe (18), the outer circumferential wall swing joint of coolant liquid circulating pipe (18) and steam ejector connecting pipe (13), the equal fixedly connected with coolant liquid pipe (19) in both ends of coolant liquid circulating pipe (18), the outer circumferential wall fixedly connected with pump machine (20) of coolant liquid pipe (19).
4. The steam injection vacuum system of the condenser of the 300MW subcritical unit according to claim 3, characterized in that: the steam condenser is characterized in that one end of the tubular heat exchanger parallel pipe (8) far away from the tubular heat exchanger (9) is fixedly connected with a tee joint (24), one end of the tee joint (24) far away from the tubular heat exchanger parallel pipe (8) is fixedly connected with the auxiliary steam main pipe (3), the other output end of the tee joint (24) is fixedly connected with a circulation main pipe (23), and one end of the circulation main pipe (23) far away from the tee joint (24) is fixedly connected with a condenser main pipe (5).
5. The steam injection vacuum system of the condenser of the 300MW subcritical unit according to claim 4, characterized in that: the outer circumferential wall fixed mounting of the main pipe of supplementary steam (3) has first manual isolating valve (4), the outer circumferential wall fixed mounting of the main pipe of circulation (23) has second manual isolating valve (22).
6. The steam injection vacuum system of the condenser of the 300MW subcritical unit according to claim 5, characterized in that: the outer circumferential wall fixedly connected with flowmeter (21) of tubular heat exchanger parallel pipe (8), the outer circumferential wall fixedly connected with governing valve (6) of supplementary steam connector (1) are kept away from in the female pipe of supplementary steam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022870929.3U CN214148891U (en) | 2020-12-02 | 2020-12-02 | Steam injection vacuum system of condenser of 300MW subcritical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022870929.3U CN214148891U (en) | 2020-12-02 | 2020-12-02 | Steam injection vacuum system of condenser of 300MW subcritical unit |
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| Publication Number | Publication Date |
|---|---|
| CN214148891U true CN214148891U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022870929.3U Active CN214148891U (en) | 2020-12-02 | 2020-12-02 | Steam injection vacuum system of condenser of 300MW subcritical unit |
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| CN (1) | CN214148891U (en) |
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2020
- 2020-12-02 CN CN202022870929.3U patent/CN214148891U/en active Active
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