CN218760051U - Shaft seal heater cooling system of steam turbine set - Google Patents
Shaft seal heater cooling system of steam turbine set Download PDFInfo
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- CN218760051U CN218760051U CN202223314533.6U CN202223314533U CN218760051U CN 218760051 U CN218760051 U CN 218760051U CN 202223314533 U CN202223314533 U CN 202223314533U CN 218760051 U CN218760051 U CN 218760051U
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Abstract
The utility model relates to a shaft seal heater cooling system of turboset, including the shaft seal heater, the hot-well, condensate pump, the condensate moisturizing case, the condensate moisturizing pump, the export of hot-well is connected with condensate pump's entry, the export of condensate moisturizing case and the entry linkage of condensate moisturizing pump, the export of condensate pump and the export of condensate moisturizing pump all are connected with the entry of shaft seal heater, the export of shaft seal heater and the entry linkage of hot-well and condensate moisturizing case, and the export of shaft seal heater can selectively switch on with the entry of hot-well or the entry of condensate moisturizing case, wherein, the rated power of condensate moisturizing pump is less than the rated power of condensate pump. Under the shutdown state of the steam turbine set, the condensate water replenishing pump with smaller rated power is adopted to provide cooling water for the shaft seal heater, and a cooling circulation flow path formed by the condensate pump with larger rated power and the hot well used under the shutdown state of the steam turbine set in the related technology is replaced, so that the power consumption is reduced.
Description
Technical Field
The disclosure relates to the technical field of cooling of steam turbine units, in particular to a shaft seal heater cooling system of a steam turbine unit.
Background
Steam turbine system includes a condensate system, which typically includes a hot well and a condensate pump, that provides recycled water for the steam-water system of the thermal power plant, which may be used as cooling water for the steam turbine shaft seal heater and boiler.
After the steam turbine set is stopped, the temperature of the boiler furnace is still high, in order to avoid deformation of the boiler steam drum, the temperature of the furnace needs to be properly reduced to ensure that the steam drum does not have thermal deformation, and the process at least needs 50 hours. In addition, in the process, steam still leaks from the shaft seal and enters the shaft seal heater, the condensate pump is stopped after the condensate pump is operated for at least 50 hours in order to avoid the shaft seal heater from being burnt and deformed under the action of the steam, but because the steam turbine set is stopped, the boiler does not need the condensate pump to supply water, the water supply is only supplied to the shaft seal heater, the condensate pump still works, and the power consumption is overlarge.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to provide a shaft seal heater cooling system of a steam turbine set to solve the technical problems existing in the related art.
In order to achieve the above object, the present disclosure provides a shaft seal heater cooling system for a steam turbine set, including a shaft seal heater, a hot well, a condensate pump, a condensate water replenishing tank, and a condensate water replenishing pump, wherein an outlet of the hot well is connected to an inlet of the condensate pump, an outlet of the condensate water replenishing tank is connected to an inlet of the condensate water replenishing pump, an outlet of the condensate pump and an outlet of the condensate water replenishing pump are both connected to an inlet of the shaft seal heater, an outlet of the shaft seal heater is connected to an inlet of the hot well and an inlet of the condensate water replenishing tank, and an outlet of the shaft seal heater can be selectively communicated with the inlet of the hot well or the inlet of the condensate water replenishing tank, wherein a rated power of the condensate water replenishing pump is smaller than a rated power of the condensate pump.
Optionally, the shaft seal heater cooling system further comprises a first stop valve and a second stop valve, and an outlet of the shaft seal heater is connected with an inlet of the hot well through the first stop valve and is connected with an inlet of the condensed water replenishing tank through the second stop valve.
Optionally, the number of the first and second shut-off valves is two.
Optionally, the shaft seal heater cooling system further comprises a first pneumatic regulating valve, and the two first stop valves are respectively disposed upstream of the first pneumatic regulating valve and downstream of the first pneumatic regulating valve.
Optionally, the shaft seal heater cooling system includes two first flow paths connected in parallel and two second flow paths connected in parallel, each first flow path can be selectively connected or disconnected, each second flow path can be selectively connected or disconnected, an outlet of the hot well is connected to inlets of the two first flow paths, outlets of the two first flow paths are connected to inlets of the shaft seal heater, an outlet of the condensed water replenishing tank is connected to inlets of the two second flow paths, outlets of the two second flow paths are connected to inlets of the shaft seal heater, the condensed water pump is disposed on each first flow path, and the condensed water replenishing pump is disposed on each second flow path.
Optionally, each of the second flow paths is provided with a first one-way valve, and each of the first one-way valves is located downstream of the condensate water replenishing pump.
Optionally, each of the first flow paths is provided with two third stop valves, the two third stop valves are respectively disposed at the upstream of the condensate pump and the downstream of the condensate pump, each of the second flow paths is provided with two fourth stop valves, and the two fourth stop valves are respectively disposed at the upstream of the condensate water replenishing pump and the downstream of the condensate water replenishing pump.
Optionally, the shaft seal heater cooling system further includes a second one-way valve, and an outlet of the condensed water replenishing pump is connected to an inlet of the shaft seal heater via the second one-way valve.
Optionally, the shaft seal heater cooling system further includes a water replenishing flow path and a fifth stop valve, the water replenishing flow path includes a water replenishing main path and two water replenishing branches connected in parallel, an outlet of the condensed water replenishing pump is connected to an inlet of the water replenishing main path and connected to an inlet of the shaft seal heater via the fifth stop valve, an outlet of the water replenishing main path is connected to an inlet of each water replenishing branch, an outlet of each water replenishing branch is connected to an inlet of the hot well, and each water replenishing branch is set to be selectively turned on or off.
Optionally, each water replenishing branch is provided with a second pneumatic regulating valve and two sixth stop valves, and the two sixth stop valves are respectively located at the upstream of the second pneumatic regulating valve and the downstream of the second pneumatic regulating valve.
According to the technical scheme, the outlet of the shaft seal heater is connected with the inlet of the hot well and the inlet of the condensed water replenishing tank, and the outlet of the shaft seal heater can be selectively communicated with the inlet of the hot well or the inlet of the condensed water replenishing tank.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic diagram of a shaft seal heater cooling system of a steam turbine unit according to an embodiment of the present disclosure.
Description of the reference numerals
100-shaft seal heater cooling system; 1-a shaft seal heater; 2-a hot well; 3-a condensate pump; 4-a condensed water replenishing tank; 5-a condensed water replenishing pump; 6-a first stop valve; 7-a second stop valve; 8-a first pneumatic regulating valve; 9-a first flow path; 10-a second flow path; 11-a third stop valve; 12-a fourth stop valve; 13-a second one-way valve; 14-a water replenishing flow path; 141-water supplement main road; 142-a water replenishing branch; 15-a fifth stop valve; 16-a second pneumatic regulating valve; 17-a sixth stop valve; 18-first one-way valve.
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, "inner and outer" refer to the inner and outer of the profile of the respective component. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the present disclosure provides a shaft seal heater cooling system 100, which includes a shaft seal heater 1, a hot well 2, a condensate pump 3, a condensate water replenishing tank 4, and a condensate water replenishing pump 5, wherein an outlet of the hot well 2 is connected to an inlet of the condensate pump 3, an outlet of the condensate water replenishing tank 4 is connected to an inlet of the condensate water replenishing pump 5, an outlet of the condensate pump 3 and an outlet of the condensate water replenishing pump 5 are both connected to an inlet of the shaft seal heater 1, an outlet of the shaft seal heater 1 is connected to an inlet of the hot well 2 and an inlet of the condensate water replenishing tank 4, and an outlet of the shaft seal heater 1 can be selectively communicated with an inlet of the hot well 2 or an inlet of the condensate water replenishing tank 4, wherein a rated power of the condensate water replenishing pump 5 is smaller than a rated power of the condensate pump 3.
In the shutdown state of the steam turbine set in the related art, the condensed water is pumped from the hot well 2 to the inlet of the shaft seal heater 1 through the condensed water pump 3, and is discharged from the outlet of the shaft seal heater 1 and returns to the hot well 2, so that the shaft seal heater 1 is cooled. In the present disclosure, in a shutdown state of the steam turbine set, that is, during cooling of the boiler, the condensed water is sent from the condensed water replenishing tank 4 to the inlet of the shaft seal heater 1 through the condensed water replenishing pump 5, and then discharged from the outlet of the shaft seal heater 1 back to the condensed water replenishing tank 4, so as to cool the shaft seal heater 1.
Through the technical scheme, the outlet of the shaft seal heater 1 is connected with the inlet of the hot well 2 and the inlet of the condensed water replenishing tank 4, and the outlet of the shaft seal heater 1 can be selectively communicated with the inlet of the hot well 2 or the inlet of the condensed water replenishing tank 4, so that the condensed water replenishing pump 5, the condensed water replenishing tank 4 and the shaft seal heater 1 can form a water circulation flow path in the shutdown state of the steam turbine set, and the water circulation flow path replaces a water circulation flow path formed by the condensed water pump 3 with higher rated power and the hot well 2 used in the shutdown state of the steam turbine set in the related technology to cool the shaft seal heater 1, namely, in the shutdown state of the steam turbine set, the condensed water replenishing pump 5 with lower rated power is adopted to supply water to the heater 1, so that the power consumption of the steam turbine set in the shutdown state is reduced, and the purpose of saving energy is realized.
In order to enable the outlet of the gland seal heater 1 to be selectively communicated with the inlet of the hot well 2 or the inlet of the condensate makeup tank 4, optionally, as shown in fig. 1, the gland seal heater cooling system 100 further comprises a first shut-off valve 6 and a second shut-off valve 7, the outlet of the gland seal heater 1 is connected with the inlet of the hot well 2 via the first shut-off valve 6 and with the inlet of the condensate makeup tank 4 via the second shut-off valve 7. In the related art, when the steam turbine set is in an off state, the first stop valve 6 is in a conducting state, and condensed water at the outlet of the shaft seal heater 1 returns to the hot well 2 through the first stop valve 6; in the present disclosure, when the steam turbine set is in a shutdown state, the first stop valve 6 is in a stop state, the second stop valve 7 is in a conduction state, and the condensed water at the outlet of the shaft seal heater 1 enters the condensed water replenishing tank 4, so that the circulation pipeline where the condensed water replenishing pump 5 is located works normally. By the arrangement, different circulation pipelines in the shutdown state of the steam turbine set can be distinguished through the first stop valve 6 and the second stop valve 7, so that the circulation pipeline where the condensate water replenishing pump 5 is located can be started in the shutdown state of the steam turbine, and a cooling circulation flow path with lower energy consumption is formed.
As another embodiment, the shaft seal heater cooling system 100 may include a three-way valve, where a port of the three-way valve is connected to the outlet of the shaft seal heater 1, B port of the three-way valve is connected to the inlet of the hot well 2, and C port of the three-way valve is connected to the inlet of the condensate makeup tank 4, so that the outlet of the shaft seal heater 1 can be selectively communicated with the inlet of the hot well 2 or the inlet of the condensate makeup tank 4.
Alternatively, as shown in fig. 1, the number of the first cutoff valve 6 and the second cutoff valve 7 is two.
In the case where there are two second stop valves 7, one of the two second stop valves 7 is usually used as an on-off valve and the other is in a semi-open state as a flow control valve in the use of the second stop valve 7. However, the arrangement is such that the valve element of the flow valve is worn by the fluid due to the flushing, and the two second stop valves 7 are arranged such that when one of the two second stop valves 7 cannot be completely closed due to the wear of the valve element, the other second stop valve 7 can function to control the opening and closing of the flow path. By the arrangement, the flow path can be completely cut off when the flow path is required to be cut off, the influence of valve core abrasion is avoided, and the normal operation of the flow path is ensured.
In order to adjust the condensate flow of the circulation line, optionally, as shown in fig. 1, the shaft seal heater cooling system 100 further includes a first pneumatic regulating valve 8, and two first cutoff valves 6 are provided upstream of the first pneumatic regulating valve 8 and downstream of the first pneumatic regulating valve 8, respectively. Because the steam turbine set has the minimum requirement on the flow of the condensed water in the pipeline in the normal operation state, the flow in the pipeline needs to be adjusted according to the overall operation state, at the moment, two first stop valves 6 need to be opened, and the first pneumatic regulating valve 8 is adopted to adjust the amount of the condensed water in the pipeline of the steam turbine set, so that the flow of the pipeline is adjusted at the stage with different water requirements, and the minimum flow requirement is met. Meanwhile, the running economy of the steam turbine set is improved on the premise of ensuring the normal running of the steam turbine set.
In addition, the two first stop valves 6 can be respectively arranged at the upstream of the first pneumatic control valve 8 and the downstream of the first pneumatic control valve 8, and when the first pneumatic control valve 8 is overhauled or replaced, the two first stop valves 6 can be closed at the same time, so that a pipeline between the two first stop valves 6 is stopped, and the normal operation of overhauling and replacing the first pneumatic control valve 8 is ensured.
In order to improve the stability of the operation of the steam turbine set, optionally, as shown in fig. 1, the steam turbine set includes two first flow paths 9 connected in parallel and two second flow paths 10 connected in parallel, each first flow path 9 can be selectively turned on or off, each second flow path 10 can be selectively turned on or off, an outlet of the hot well 2 is connected to inlets of the two first flow paths 9, outlets of the two first flow paths 9 are connected to an inlet of the shaft seal heater 1, an outlet of the condensed water replenishing tank 4 is connected to inlets of the two second flow paths 10, outlets of the two second flow paths 10 are connected to an inlet of the shaft seal heater 1, a condensed water pump 3 is disposed on each first flow path 9, and a condensed water replenishing pump 5 is disposed on each second flow path 10. Under the normal operation state of the steam turbine set, condensed water enters the inlet of the shaft seal heater 1 through the outlet of the hot well 2 and one of the two first flow paths 9 so as to regulate the flow in the pipeline; in the shutdown state of the steam turbine set, the condensed water enters the inlet of the shaft seal heater 1 through one of the two second flow paths 10 via the outlet of the condensed water replenishing tank 4 to cool the shaft seal heater 1. According to the arrangement, one flow path used for daily use and the other flow path used as a standby flow path are arranged in each of the two first flow paths 9 or the two second flow paths 10, so that the steam turbine unit can be used by the standby flow paths in different states, and normal operation of equipment in the steam turbine unit in different states is guaranteed.
Alternatively, as shown in fig. 1, a first check valve 18 is provided on each second flow path 10, and each first check valve 18 is located downstream of the condensate makeup pump 5. The first check valve 18 is disposed downstream of the condensate replenishing pump 5 so that the condensate does not return to the condensate replenishing pump 5 as it is after flowing out of the condensate replenishing pump 5. In addition, because the two second flow paths 10 are arranged in parallel, the arrangement of the first check valve 18 at the downstream of the condensed water replenishing pump 5 can also prevent the condensed water in one of the two second flow paths 10 from flowing to the other through a connecting point, thereby ensuring that the two parallel second flow paths 10 can normally operate.
Alternatively, as shown in fig. 1, two third stop valves 11 are provided on each first flow path 9, the two third stop valves 11 are provided upstream of the condensate pump 3 and downstream of the condensate pump 3, respectively, and two fourth stop valves 12 are provided on each second flow path 10, the two fourth stop valves 12 are provided upstream of the condensate water replenishing pump 5 and downstream of the condensate water replenishing pump 5, respectively. Two third stop valves 11 set up respectively in the both sides of condensate pump 3, and two fourth stop valves 12 set up respectively in the both sides of condensate water make-up pump 5, and third stop valve 11 and fourth stop valve 12 can be when condensate pump 3 and condensate water make-up pump 5 normal operating, are used for the ending and the switching-on of control flow path. And, if the third cut-off valves 11 of both sides of the condensate pump 3 are closed at the same time, or the fourth cut-off valves 12 of both sides of the condensate water replenishing pump 5 are closed at the same time, the passage between the two cut-off valves can be cut off when the condensate pump 3 or the condensate water replenishing pump 5 needs to be repaired or replaced, thereby facilitating the repair and replacement of the condensate pump 3 or the condensate water replenishing pump 5.
Optionally, as shown in fig. 1, the first check valve 18 is disposed downstream of the condensate make-up pump 5 and upstream of the fourth stop valve 12, so as to prevent the condensate from flowing back into the condensate make-up pump 5 due to the fourth stop valve 12 being unable to be completely closed, and ensure safe operation of the condensate make-up pump 5.
Alternatively, at least one of the third stop valve 11 and the fourth stop valve 12 may be an electric stop valve.
Optionally, the shaft seal heater cooling system 100 further comprises a second one-way valve 13, and the outlet of the condensate make-up water pump 5 is connected with the inlet of the shaft seal heater 1 via the second one-way valve 13. The second one-way valve 13 is arranged at the outlet of the condensate water replenishing pump 5, so that the condensate water discharged by the condensate pump 3 can be prevented from flowing back to the condensate water replenishing pump 5 to influence the normal operation of the circulating pipeline when the condensate pump 3 works.
Optionally, as shown in fig. 1, the steam turbine set may further include a water replenishing flow path 14 and a fifth stop valve 15, the water replenishing flow path 14 includes a water replenishing main path 141 and two water replenishing branches 142 connected in parallel with each other, an outlet of the condensed water replenishing pump 5 is connected to an inlet of the water replenishing main path 141 and to an inlet of the shaft seal heater 1 via the fifth stop valve 15, an outlet of the water replenishing main path 141 is connected to an inlet of each water replenishing branch 142, an outlet of each water replenishing branch 142 is connected to an inlet of the hotwell 2, and each water replenishing branch 142 is configured to be selectively turned on or off.
Thus, the condensate water replenishing tank 4 and the condensate water replenishing pump 5 can be used as a device for replenishing the condensate water to the hot well 2, and the condensate water replenishing tank 4 and the condensate water replenishing pump 5 are arranged in the shaft seal heater cooling system 100 to communicate the hot well 2 with the condensate water replenishing pump 5, so that the condensate water lost by the hot well 2 due to evaporation or steam leakage can be replenished into the hot well 2 through the condensate water replenishing pump 5 via the condensate water replenishing flow path 14 by the condensate water replenishing tank 4 in the normal operation state of the turboset. When the replenishment water passage 14 is opened, the fifth stop valve 15 is in a stop state, so that the condensate pumped by the condensate replenishment water pump 5 flows only from the inlet of the replenishment water main passage 141 without directly flowing to the shaft seal heater 1, and finally enters the hot well 2.
In addition, the water replenishing branch circuits 142 which are connected in parallel are arranged, so that the operation stability of the water replenishing flow path 14 can be improved, any one water replenishing branch circuit 142 is connected with the inlet of the hot well 2, one of the two water replenishing branch circuits 142 can be used as a daily-use pipeline, and the other water replenishing branch circuit can be used as a standby pipeline. Is beneficial to the maintenance and the operation of the water replenishing pipeline.
Alternatively, as shown in fig. 1, each of the water replenishing branches 142 is provided with a second pneumatic regulating valve 16 and two sixth stop valves 17, and the two sixth stop valves 17 are respectively located upstream of the second pneumatic regulating valve 16 and downstream of the second pneumatic regulating valve 16. Aiming at the water replenishing requirement of the hot well 2, the second pneumatic regulating valve 16 is continuously regulated according to the actual running condition of the steam turbine set, and the flow of the water replenishing can be regulated when the water is replenished to the hot well 2 through the water replenishing flow path 14, so that the requirement of the shaft seal heater cooling system 100 is met. And, the sixth stop valves 17 are provided upstream and downstream of each second pneumatic regulating valve 16, facilitating replacement or maintenance of the second pneumatic regulating valve 16.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The cooling system is characterized by comprising a shaft seal heater, a hot well, a condensate pump, a condensate water supplementing tank and a condensate water supplementing pump, wherein an outlet of the hot well is connected with an inlet of the condensate pump, an outlet of the condensate water supplementing tank is connected with an inlet of the condensate water supplementing pump, an outlet of the condensate pump and an outlet of the condensate water supplementing pump are both connected with an inlet of the shaft seal heater, an outlet of the shaft seal heater is connected with an inlet of the hot well and an inlet of the condensate water supplementing tank, an outlet of the shaft seal heater can be selectively communicated with the inlet of the hot well or the inlet of the condensate water supplementing tank, and the rated power of the condensate water supplementing pump is smaller than the rated power of the condensate pump.
2. The steam turbine assembly shaft seal heater cooling system according to claim 1, further comprising a first shut-off valve and a second shut-off valve, wherein an outlet of the shaft seal heater is connected to an inlet of the hot well via the first shut-off valve and to an inlet of the condensate makeup tank via the second shut-off valve.
3. The steam turbine unit shaft seal heater cooling system according to claim 2, wherein the number of the first stop valve and the second stop valve is two.
4. The steam turbine assembly gland seal heater cooling system according to claim 3, further comprising a first pneumatic regulating valve, wherein two of said first shut-off valves are disposed upstream of said first pneumatic regulating valve and downstream of said first pneumatic regulating valve, respectively.
5. The steam turbine assembly shaft seal heater cooling system according to claim 1, wherein the shaft seal heater cooling system includes two first flow paths connected in parallel and two second flow paths connected in parallel, each of the first flow paths is selectively connectable or disconnectable, each of the second flow paths is selectively connectable or disconnectable, an outlet of the hot well is connected to inlets of the two first flow paths, outlets of the two first flow paths are connected to an inlet of the shaft seal heater, an outlet of the condensed water replenishing tank is connected to inlets of the two second flow paths, outlets of the two second flow paths are connected to an inlet of the shaft seal heater, the condensed water pump is disposed on each of the first flow paths, and the condensed water replenishing pump is disposed on each of the second flow paths.
6. The steam turbine assembly shaft seal heater cooling system according to claim 5, wherein each of the second flow paths is provided with a first check valve, and each of the first check valves is located downstream of the condensate makeup pump.
7. The steam turbine assembly shaft seal heater cooling system according to claim 5, wherein two third shut-off valves are provided on each of the first flow paths, the two third shut-off valves being provided upstream of the condensate pump and downstream of the condensate pump, respectively, and two fourth shut-off valves are provided on each of the second flow paths, the two fourth shut-off valves being provided upstream of the condensate makeup pump and downstream of the condensate makeup pump, respectively.
8. The steam turbine assembly shaft seal heater cooling system according to any one of claims 1 to 7, further comprising a second check valve, wherein an outlet of the condensate replenishing water pump is connected to an inlet of the shaft seal heater via the second check valve.
9. The shaft seal heater cooling system of a turboset according to any one of claims 1 to 7, wherein the shaft seal heater cooling system further includes a water replenishment flow path and a fifth stop valve, the water replenishment flow path includes a water replenishment main path and two water replenishment branches connected in parallel to each other, an outlet of the condensate water replenishment pump is connected to an inlet of the water replenishment main path and to an inlet of the shaft seal heater via the fifth stop valve, an outlet of the water replenishment main path is connected to an inlet of each of the water replenishment branches, an outlet of each of the water replenishment branches is connected to an inlet of the hot well, and each of the water replenishment branches is provided to be selectively switchable on and off.
10. The steam turbine assembly shaft seal heater cooling system according to claim 9, wherein a second pneumatic regulating valve and two sixth stop valves are provided on each of the water replenishment branches, the two sixth stop valves being located upstream of the second pneumatic regulating valve and downstream of the second pneumatic regulating valve, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223314533.6U CN218760051U (en) | 2022-12-08 | 2022-12-08 | Shaft seal heater cooling system of steam turbine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223314533.6U CN218760051U (en) | 2022-12-08 | 2022-12-08 | Shaft seal heater cooling system of steam turbine set |
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| CN218760051U true CN218760051U (en) | 2023-03-28 |
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| CN202223314533.6U Active CN218760051U (en) | 2022-12-08 | 2022-12-08 | Shaft seal heater cooling system of steam turbine set |
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