CN216811793U - Shaft seal air inlet auxiliary device - Google Patents
Shaft seal air inlet auxiliary device Download PDFInfo
- Publication number
- CN216811793U CN216811793U CN202220455663.2U CN202220455663U CN216811793U CN 216811793 U CN216811793 U CN 216811793U CN 202220455663 U CN202220455663 U CN 202220455663U CN 216811793 U CN216811793 U CN 216811793U
- Authority
- CN
- China
- Prior art keywords
- shaft seal
- pipe
- conversion
- flange
- air intake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a shaft seal air inlet auxiliary device which comprises a heating assembly, wherein the heating assembly comprises an electric heater, a sealing flange, a conversion tank and a first connecting pipe, the conversion tank is connected with the first connecting pipe, the first connecting pipe is connected with the sealing flange, the sealing flange is connected with the electric heater, and the electric heater is connected with a shaft seal of a steam turbine; an auxiliary component cooperating with the heating component. The auxiliary temperature is controlled by additionally arranging the electric heater and the radiator, so that the good operation of the steam turbine is guaranteed.
Description
Technical Field
The utility model relates to the technical field of machinery, in particular to a shaft seal air inlet auxiliary device.
Background
The steam source of the steam turbine shaft seal of a certain power plant unit only has one path of auxiliary steam source, the steam turbine shaft seal is not distinguished by high pressure and low pressure, the temperature of the shaft seal is consistent, the temperature of the shaft seal is about 250 ℃ when the auxiliary steam is supplied, and after the unit steam turbine is transformed, the temperature of the auxiliary steam to the shaft seal is abnormal and can not meet the requirement of cylinder temperature.
When the temperature of the shaft seal is too high, particularly before a unit is started, if the temperature is too high, the steam seal position of the shaft end and the steam seal section of the rotor can be heated violently, and a local stress concentration phenomenon is generated, so that certain deformation is generated, a gap between the rotor and a cylinder can be changed, the steam leakage amount of the shaft seal is increased, the expansion difference is increased, and dynamic and static friction can be generated seriously.
When the temperature of the shaft seal is too low, the shaft end steam seal and the rotor steam seal section are cooled, and local stress concentration phenomenon is generated, so that the gap between the cylinder and the rotor is changed, the air leakage of the shaft end is increased, and the expansion difference is reduced. When the temperature of the shaft seal is too low, steam and water carried by the shaft seal can be supplied, so that water hammer can occur in a steam supply pipeline of the shaft seal. And when the water is serious, the steam turbine is fed with water.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the utility model is that the auxiliary steam to the shaft seal temperature can not meet the requirement of the cylinder temperature.
In order to solve the technical problems, the utility model provides the following technical scheme: the shaft seal air inlet auxiliary device comprises a heating assembly, wherein the heating assembly comprises an electric heater, a sealing flange, a conversion tank and a first connecting pipe, the conversion tank is connected with the first connecting pipe, the first connecting pipe is connected with the sealing flange, the sealing flange is connected with the electric heater, and the electric heater is connected with a shaft seal of a steam turbine; an auxiliary component cooperating with the heating component.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the conversion tank comprises an air inlet pipe, an air outlet pipe and a conversion pipe, the air inlet pipe, the air outlet pipe and the conversion pipe are arranged on the circumferential surface of the conversion tank, the circle centers of the air inlet pipe and the air outlet pipe are located on the same axis, and the air outlet pipe is connected with the first connecting pipe.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the conversion tank further comprises a cavity and an upper rotating hole, the cavity is arranged inside the conversion tank, and the upper rotating hole is arranged at the upper end of the conversion tank.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the cavity is internally provided with a hollow rotating column, and the circumferential surface of the hollow rotating column is provided with a limiting lug.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the sealing flange comprises a flange pipe and flange bolt holes, the flange pipe and the flange bolt holes are formed in the side face of the sealing flange, and the flange bolt holes are multiple.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the side face of the sealing flange is also provided with a flange groove, and a flange gasket is arranged in the flange groove.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the auxiliary assembly comprises a radiator and a conversion block, the radiator is respectively connected with the conversion pipe and the first connecting pipe through pipelines, and the conversion block is arranged in the cavity.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the side face of the radiator is provided with a heat dissipation air inlet and a heat dissipation air outlet, the heat dissipation air inlet is connected with the conversion pipe, and the heat dissipation air outlet is connected with the first connecting pipe.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the conversion piece includes motor and dwang, the motor set up in conversion piece upper end, the dwang set up in the motor lower extreme, the dwang passes go up the rotation hole with hollow rotation post is connected.
As a preferable aspect of the shaft seal air intake auxiliary device of the present invention, wherein: the conversion block further comprises a semicircular block, and the semicircular block is arranged on the circumferential surface of the rotating rod.
The utility model has the beneficial effects that: the auxiliary temperature is controlled by additionally arranging the electric heater and the radiator, so that the good operation of the steam turbine is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor. Wherein:
FIG. 1 is a schematic view of an assembly structure of a shaft seal air intake assisting device assembly according to an embodiment of the present invention;
FIG. 2 is a schematic view of a connection structure of a shaft seal air intake assisting device assembly according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view of a transition tank in the shaft seal air intake auxiliary device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a shaft seal air intake assisting device including a heating assembly 100.
The heating assembly comprises an electric heater 101, a sealing flange 102, a conversion tank 103 and a first connecting pipe 104, wherein the conversion tank 103 is connected with the first connecting pipe 104, the first connecting pipe 104 is connected with the sealing flange 102, the sealing flange 102 is connected with the electric heater 101, and the electric heater 101 is connected with a steam turbine shaft seal through a pipeline; an auxiliary assembly 200, the auxiliary assembly 200 cooperating with the heating assembly 100.
The conversion tank 103 comprises an air inlet pipe 103a, an air outlet pipe 103b and a conversion pipe 103c, the air inlet pipe 103a, the air outlet pipe 103b and the conversion pipe 103c are arranged on the circumferential surface of the conversion tank 103, the centers of circles of the air inlet pipe 103a and the air outlet pipe 103b are located on the same axis, and the air outlet pipe 103b is fixedly connected with the first connecting pipe 104.
The auxiliary steam source is fixedly connected with the air inlet pipe 103a through a pipeline.
The conversion tank 103 further includes a cavity 103d and an upper rotation hole 103e, the cavity 103d is disposed inside the conversion tank 103, and the upper rotation hole 103e is disposed at an upper end of the conversion tank 103.
The cavity 103d communicates with the upper rotary hole 103 e.
The cavity 103d is internally provided with a hollow rotating column 103d-1, the circumferential surface of the hollow rotating column 103d-1 is provided with a limiting bump 103d-11, and at least two limiting bumps 103d-11 are arranged for limiting the conversion angle of the conversion block 202.
The sealing flange 102 includes a flange pipe 102a and a flange bolt hole 102b, the flange pipe 102a and the flange bolt hole 102b are disposed on the side surface of the sealing flange 102, and the flange bolt hole 102b is provided in plurality.
The sealing flange 102 is further provided with a flange groove 102c on the side, and a flange gasket 102c-1 is arranged in the flange groove 102 c.
It should be noted that a temperature sensor is also arranged on the conversion tank 103, a temperature sensor is also arranged at the outlet of the electric heater 101, and the temperature sensor and the electric heater 101 are connected with a DCS remote electric signal for remotely controlling the on and off of the electric heater 101, or manually controlling the electric heater.
When the steam turbine is used, a worker judges whether to start the electric heater 101 according to the temperature sensor on the conversion tank 103, the power of the electric heater 101 is adjusted according to the temperature sensor arranged at the outlet of the electric heater 101, the temperature of auxiliary gas is guaranteed, the phenomenon that a shaft end steam seal and a rotor steam seal section are cooled due to too low shaft seal temperature is avoided, a local stress concentration phenomenon is generated, a gap between a cylinder and a rotor is changed, the air leakage of the shaft end is increased, the expansion difference is reduced, and the steam turbine breaks down.
Example 2
Referring to fig. 1 to 3, a second embodiment of the present invention is provided, based on the previous embodiment, in this embodiment, an embodiment of an air inlet auxiliary device for a shaft seal is provided.
The auxiliary assembly 200 includes a heat sink 201 and a conversion block 202, the heat sink 201 is fixedly connected to the conversion pipe 103c and the first connection pipe 104 through pipes, respectively, and the conversion block 202 is disposed in the cavity 103 d.
The side of the heat sink 201 is provided with a heat radiation air inlet 201a and a heat radiation air outlet 201b, the heat radiation air inlet 201a is connected with the conversion pipe 103c, and the heat radiation air outlet 201b is connected with the first connection pipe 104.
The conversion block 202 comprises a motor 202a and a rotating rod 202b, the motor 202a is arranged at the upper end of the conversion block 202, the rotating rod 202b is arranged at the lower end of the motor 202a, and the rotating rod 202b passes through the upper rotating hole 103e to be fixedly connected with the hollow rotating column 103 d-1.
The conversion block 202 further comprises a semicircular block 202c, the semicircular block 202c is arranged on the circumferential surface of the rotating rod 202b, the height of the semicircular block 202c is equal to that of the cavity 103d, and the semicircular block is used for switching whether the air inlet pipe 103a is independently communicated with the air outlet pipe 103b or the air inlet pipe 103a is independently communicated with the conversion pipe 103c, so that the flow direction of steam is changed.
The inlet pipe 103a is in separate communication with the outlet pipe 103b in the normal state.
The motor 202a is electrically connected with the DCS system for remote control.
Be provided with temperature sensor on heat dissipation gas outlet 201b, temperature sensor and DCS system electric signal connection.
In use, the operator determines whether to heat or cool the tank based on a temperature sensor on the transfer tank 103.
If the electric heater 101 is started by heating, the power of the electric heater 101 is adjusted according to a temperature sensor arranged at the outlet of the electric heater 101, and the temperature of the auxiliary gas is guaranteed.
If heat dissipation is performed, the starting motor 202a rotates the rotating rod 202b to enable the air inlet pipe 103a to be independently communicated with the conversion pipe 103c, the radiator 201 is started to control the power of the radiator 201 according to the temperature sensor on the heat dissipation air outlet 201b, and the temperature of the auxiliary air is guaranteed.
The device can regulate and control the temperature of the auxiliary gas in real time according to the actual situation on site, so that the temperature of the shaft seal is adaptive to the temperature of the cylinder, and the good operation of the steam turbine is guaranteed.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the utility model, or those unrelated to enabling the utility model).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a shaft seal auxiliary device that admits air which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the heating assembly (100) comprises an electric heater (101), a sealing flange (102), a conversion tank (103) and a first connecting pipe (104), wherein the conversion tank (103) is connected with the first connecting pipe (104), the first connecting pipe (104) is connected with the sealing flange (102), the sealing flange (102) is connected with the electric heater (101), and the electric heater (101) is connected with a shaft seal of a steam turbine;
an auxiliary assembly (200), the auxiliary assembly (200) cooperating with the heating assembly (100).
2. The shaft seal air intake aid of claim 1, wherein: the conversion tank (103) comprises an air inlet pipe (103a), an air outlet pipe (103b) and a conversion pipe (103c), the air inlet pipe (103a), the air outlet pipe (103b) and the conversion pipe (103c) are arranged on the circumferential surface of the conversion tank (103), the circle centers of the air inlet pipe (103a) and the air outlet pipe (103b) are located on the same axis, and the air outlet pipe (103b) is connected with the first connecting pipe (104).
3. The shaft seal air intake aid of claim 2, wherein: the conversion tank (103) further comprises a cavity (103d) and an upper rotating hole (103e), the cavity (103d) is arranged inside the conversion tank (103), and the upper rotating hole (103e) is arranged at the upper end of the conversion tank (103).
4. The shaft seal air intake aid of claim 3, wherein: a hollow rotating column (103d-1) is arranged in the cavity (103d), and a limiting bump (103d-11) is arranged on the circumferential surface of the hollow rotating column (103 d-1).
5. The shaft seal air intake aid of claim 4, wherein: the sealing flange (102) comprises a flange pipe (102a) and a flange bolt hole (102b), the flange pipe (102a) and the flange bolt hole (102b) are arranged on the side face of the sealing flange (102), and the flange bolt hole (102b) is provided with a plurality of holes.
6. The shaft seal air intake aid of claim 5, wherein: the side face of the sealing flange (102) is also provided with a flange groove (102c), and a flange gasket (102c-1) is arranged in the flange groove (102 c).
7. The shaft seal air intake assisting device according to any one of claims 4 to 6, wherein: the auxiliary assembly (200) comprises a radiator (201) and a conversion block (202), the radiator (201) is respectively connected with the conversion pipe (103c) and the first connecting pipe (104) through pipelines, and the conversion block (202) is arranged in the cavity (103 d).
8. The shaft seal air intake aid of claim 7, wherein: the side face of the radiator (201) is provided with a heat dissipation air inlet (201a) and a heat dissipation air outlet (201b), the heat dissipation air inlet (201a) is connected with the conversion pipe (103c), and the heat dissipation air outlet (201b) is connected with the first connecting pipe (104).
9. The shaft seal air intake aid of claim 8, wherein: the conversion block (202) comprises a motor (202a) and a rotating rod (202b), the motor (202a) is arranged at the upper end of the conversion block (202), the rotating rod (202b) is arranged at the lower end of the motor (202a), and the rotating rod (202b) penetrates through the upper rotating hole (103e) and the hollow rotating column (103d-1) to be connected.
10. The shaft seal air intake aid of claim 9, wherein: the conversion block (202) further comprises a semicircular block (202c), and the semicircular block (202c) is arranged on the circumferential surface of the rotating rod (202 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220455663.2U CN216811793U (en) | 2022-02-28 | 2022-02-28 | Shaft seal air inlet auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220455663.2U CN216811793U (en) | 2022-02-28 | 2022-02-28 | Shaft seal air inlet auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216811793U true CN216811793U (en) | 2022-06-24 |
Family
ID=82043415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220455663.2U Active CN216811793U (en) | 2022-02-28 | 2022-02-28 | Shaft seal air inlet auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216811793U (en) |
-
2022
- 2022-02-28 CN CN202220455663.2U patent/CN216811793U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20110121110A (en) | System for increasing supercritical brayton cycle efficiency through shift of critical point using gas mixture | |
| KR20110033793A (en) | Cooling system for a gas turbine and corresponding operation method | |
| JP5543029B2 (en) | Internal cooling system for turbomachine | |
| EP0953732B1 (en) | Combined cycle plant | |
| CN216811793U (en) | Shaft seal air inlet auxiliary device | |
| CN100385092C (en) | Rapid power producing system and method for steam turbine | |
| CN112814747A (en) | System and method for generating power by carbon dioxide in high-temperature gas cooled reactor | |
| CN1815034B (en) | Industrial pump and manufacturing method thereof | |
| US20030061796A1 (en) | Power generating plant | |
| US9464537B2 (en) | Clutched turbine wheels | |
| CN106224282A (en) | A kind of blower fan processed for super high temperature flue gas | |
| CN101354044A (en) | Centrifugal pump suitable for high temperature and high coagulating point medium and its use method | |
| CN102132008B (en) | Steam turbine | |
| CN206280306U (en) | Axle envelope formula core main pump heat screen system and device | |
| CN106286409A (en) | Axle Feng Shihe main pump heat screen system and device | |
| CN207229468U (en) | A kind of horizontal vortex pump with cooling pre-washing function | |
| CN113864011A (en) | Low-quality emptying steam power generation system | |
| CN218001477U (en) | Auxiliary device for improving air temperature of air preheater inlet | |
| CN202348355U (en) | High height-width ratio horizontal joint flange for upper and lower half cylinder bodies of steam turbine | |
| CN104329964A (en) | High-efficient low-cost tubular heat regenerator for miniature gas turbine | |
| CN218510851U (en) | Heating device for improve backup steam source reliability of thermal power plant's bearing seal | |
| CN102996192B (en) | Efficient internal recycle engine | |
| CN220581113U (en) | Fluid energy ladder utilization device | |
| CN212272319U (en) | Integrated steam turbine generator unit | |
| CN220869484U (en) | High-pressure cylinder body structure of ultra-supercritical steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |