CN112664321A - Fan starting device - Google Patents
Fan starting device Download PDFInfo
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- CN112664321A CN112664321A CN201910977232.5A CN201910977232A CN112664321A CN 112664321 A CN112664321 A CN 112664321A CN 201910977232 A CN201910977232 A CN 201910977232A CN 112664321 A CN112664321 A CN 112664321A
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- flue gas
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Abstract
The invention relates to the technical field of fans, and discloses a fan starting device, which comprises: the system comprises a flue gas turbine, a main fan and a motor, wherein the flue gas turbine, the main fan and the motor are sequentially connected; and the steam pipe network is connected with the flue gas turbine, wherein the steam pipe network conveys high-temperature and high-pressure steam to the inside of the flue gas turbine so as to apply work and drive the flue gas turbine to rotate, the flue gas turbine rotates to drive the main fan to rotate, and the main fan rotates to drive the motor to rotate. The fan starting device has the advantages of simple structure, economic cost saving and capability of effectively reducing the impact on a power grid when the main fan is started.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a fan starting device.
Background
The main fan set of the large catalytic cracking unit is generally configured by adopting a three-unit scheme of a flue gas turbine, the main fan and a motor/generator, the starting of the main fan is the first problem to be considered in unit design, and the matched motor/generator set has high power, particularly when the system conditions such as a power grid and the like are poor. In order to reduce the impact on the power grid, the motor/generator set of the main fan unit generally needs to be equipped with a special starting device, such as a separate step-down transformer, a soft start or a high-power frequency converter, to drive the start of the main fan, however, this approach may lead to complexity of the system and increase of investment cost. The catalytic cracking device is a core device of an oil refinery, and is usually matched with a standby fan, when the catalytic cracking device starts to work, the standby fan is started firstly, the standby fan is generally configured by a standby fan-motor, the standby fan has higher power, the standby fan is also started by matching with modes of soft start, reduced pressure start and the like, after the catalytic cracking device normally feeds, smoke is used for driving a smoke machine to drag a main fan to start, and a motor/generator set is dragged by the main fan to generate electricity.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a fan starting device, which aims to solve the technical problems that when a main fan is started in the prior art, a large-capacity starting device needs to be configured, so that the whole equipment is relatively complex and the investment cost is increased.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a fan starting apparatus, including: the system comprises a flue gas turbine, a main fan and a motor, wherein the flue gas turbine, the main fan and the motor are sequentially connected; and the steam pipe network is connected with the flue gas turbine, wherein the steam pipe network conveys high-temperature and high-pressure steam to the inside of the flue gas turbine so as to apply work and drive the flue gas turbine to rotate, the flue gas turbine rotates to drive the main fan to rotate, and the main fan rotates to drive the motor to rotate.
And the outlet of the steam pipe network is connected with the first inlet of the flue gas turbine through a steam pipeline.
The steam pipeline is provided with a steam pipeline sensor which can monitor the steam temperature, the steam pressure and the steam flow in the steam pipeline.
The steam pipeline is also provided with a first adjusting valve capable of adjusting the size of the section caliber of the steam pipeline.
The fan starting device further comprises a catalytic cracking regenerator, and the catalytic cracking regenerator is connected with the second inlet of the flue gas turbine through a flue gas pipeline.
The flue gas pipeline is provided with a flue gas pipeline sensor which can monitor the flue gas temperature, the flue gas pressure and the flue gas flow inside the flue gas pipeline.
The flue gas pipeline is provided with a second regulating valve capable of regulating the size of the section caliber of the flue gas pipeline.
The fan starting device further comprises a main controller, wherein the main controller is electrically connected with the steam pipeline sensor and the smoke pipeline sensor respectively.
The output shaft of the flue gas turbine is coaxially connected with the input shaft of the main fan; the output shaft of the main fan is coaxially connected with the input shaft of the motor.
Wherein the electrical machine comprises an electric motor or a generator.
(III) advantageous effects
Compared with the prior art, the fan starting device provided by the invention has the following advantages:
before the catalytic cracking unit does not normally operate, a catalytic cracking regenerator located in the catalytic cracking unit and described below also does not normally operate, and at this time, the supply amount of the flue gas generated by the catalytic cracking regenerator is unstable, and sufficient flue gas cannot be normally supplied to the flue gas turbine, so that the flue gas turbine cannot drag the main fan, and at the same time, the main fan cannot be started, that is, the main fan cannot normally rotate. In order to start the main fan before the catalytic cracking device normally operates, a steam pipe network can be additionally arranged, high-temperature and high-pressure steam in the steam pipe network is conveyed into the flue gas turbine, the flue gas turbine does work and drags the main fan to rotate, and the main fan rotates to drive the motor to rotate and generate electricity, so that the situation that a standby fan needs to be started firstly and a large-capacity starting device (such as an independent transformer, a soft starting device and the like) needs to be configured on the standby fan before the catalytic cracking device does not normally operate is avoided. In addition, this application has also avoided the main blower to cause the impact to the electric wire netting when starting through the mode of addding steam pipe network and starting the main blower.
Drawings
Fig. 1 is a schematic overall structural diagram of a fan starting device according to an embodiment of the present invention.
Reference numerals:
1: a flue gas turbine; 11: a first inlet; 12: a second inlet; 2: a main fan; 3: a motor; 4: a steam pipe network; 5: a steam line; 6: a steam line sensor; 7: a first regulating valve; 8: a catalytic cracking regenerator; 9: a flue gas duct; 10: a flue gas duct sensor; 20: a second regulating valve; 30: and a master controller.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1, the fan starting apparatus is schematically shown to include a flue gas turbine 1, a main fan 2, a motor 3, and a steam pipe network 4.
In the embodiment of the present application, the flue gas turbine 1, the main fan 2 and the motor 3 are connected in sequence.
This steam pipe network 4 is connected with this gas turbine 1, and wherein, this steam pipe network 4 carries the highly compressed steam of high temperature in order to do work and drive this gas turbine 1 and rotate this gas turbine 1 to this gas turbine 1's inside, rotates through this gas turbine 1 and drives this main blower 2 and rotate, rotates through this main blower 2 and drives this motor 3 and rotate. Specifically, before the catalytic cracking apparatus does not operate normally, the following catalytic cracking regenerator 8 in the catalytic cracking apparatus does not operate normally, and at this time, the supply amount of the flue gas generated by the catalytic cracking regenerator 8 is unstable, and the flue gas cannot be supplied to the flue gas turbine 1 normally enough, so that the flue gas turbine 1 cannot drag the main fan 2, and at the same time, the main fan 2 cannot be started, that is, the main fan 2 cannot rotate normally. In order to start the main fan 2 before the catalytic cracking unit operates normally, the steam pipe network 4 can be additionally arranged, high-temperature and high-pressure steam in the steam pipe network 4 is conveyed to the inside of the flue gas turbine 1, the flue gas turbine 1 is acted and the main fan 2 is dragged to rotate, the main fan 2 rotates to drive the motor 3 to rotate and generate electricity, and therefore the situation that before the catalytic cracking unit operates normally, a standby fan needs to be started first and is provided with a large-capacity starting device (such as an independent transformer, a soft starting device and the like) for starting the main fan 2 is avoided. In addition, this application has also avoided main fan 2 to cause the impact to the electric wire netting when starting effectively through the mode of addding steam pipe network 4 and starting main fan 2.
It should be noted that the structures and operating principles of the flue gas turbine 1, the main fan 2, the motor 3 and the steam pipe network 4 are well known to those skilled in the art, and are not described in detail herein for the sake of brevity.
It should be noted that the temperature of the so-called "high-temperature high-pressure steam" is in the range of 200 ℃ to 400 ℃ and the pressure is in the range of 10MPa (MPa) to 40MPa (MPa).
In the embodiment of the application, as shown in fig. 1, the outlet of the steam pipe network 4 is connected to the first inlet 11 of the flue gas turbine 1 via a steam pipe 5. In order to avoid the leakage of the steam in the steam pipe 5, it is necessary to ensure the sealing performance between the outlet of the steam pipe network 4 and the inlet of the steam pipe 5 and between the outlet of the steam pipe 5 and the first inlet 11 of the flue gas turbine 1, and specifically, a seal ring, a seal strip, a seal ring, or the like may be added to the connection portion of the interface.
It should also be noted that the steam in the steam pipe network 4 may be from steam directly produced by the steam boiler or from excess steam produced by the steam boiler.
In another preferred embodiment of the present application, a steam pipe sensor 6 capable of monitoring the steam temperature, the steam pressure and the steam flow rate in the steam pipe 5 is provided on the steam pipe 5. Specifically, the steam pipeline sensor 6 is additionally arranged on the steam pipeline 5, so that the temperature, the pressure and the flow of steam can be monitored in real time, and an operator can timely adjust the temperature, the pressure and the flow of the steam according to the working condition of the flue gas turbine 1 in real time.
In another preferred embodiment of the present application, as shown in fig. 1, a first regulating valve 7 capable of regulating the size of the cross-sectional bore of the steam pipe 5 is further provided on the steam pipe 5. Specifically, the first regulating valve 7 is additionally arranged on the steam pipeline 5, and the size of the section caliber of the steam pipeline 5 can be regulated by rotating the first regulating valve 7, so that the purpose of timely and effectively regulating the flow of the steam flowing through the steam pipeline 5 in unit time is achieved, the requirement of the flue gas turbine 1 for doing work can be met, and further, the flue gas turbine 1 can smoothly drive the main fan 2 to rotate.
It should be noted that the first regulating valve 7 may be a common manual valve or a solenoid valve, and it should be understood that the requirements of one-way flow and reverse blocking are satisfied regardless of whether the first regulating valve 7 is a manual valve or a solenoid valve.
As shown in fig. 1, in the embodiment of the present application, the fan start-up device further comprises a catalytic cracking regenerator 8, and the catalytic cracking regenerator 8 is connected with the second inlet 12 of the flue gas turbine 1 through a flue gas pipe 9. Specifically, the catalytic cracking regenerator 8 may introduce high-temperature and high-pressure flue gas into the flue gas turbine 1 through the flue gas pipeline 9 and apply work to the flue gas turbine 1, so that the flue gas turbine 1 may drag the main fan 2 to operate.
It should be noted that before the catalytic cracking regenerator 8 in the catalytic cracking apparatus normally feeds, steam is supplied to the flue gas turbine 1 by the steam pipe network 4 and works on the flue gas turbine 1, so that the flue gas turbine 1 can drive the main blower 2 to start up, and after the catalytic cracking regenerator 8 normally operates, the steam pipe network 4 can be stopped to supply steam to the flue gas turbine 1, that is, only the catalytic cracking regenerator 8 provides high-temperature and high-pressure flue gas to the flue gas turbine 1 and works on the flue gas turbine 1, so as to achieve the purpose of driving the main blower 2 to start up.
In addition, the flue gas turbine 1 can also receive the flue gas and the steam to do work at the same time, that is, in the same time, the high-temperature and high-pressure steam can be introduced into the flue gas turbine 1 through the steam pipe network 4 via the steam pipe 5 to do work on the flue gas turbine 1, and simultaneously, the high-temperature and high-pressure flue gas can be provided for the inside of the flue gas turbine 1 via the flue gas pipe 9 through the catalytic cracking regenerator 8 to do work on the flue gas turbine 1.
In a particular embodiment, the so-called "high temperature and high pressure flue gas" has a temperature in the range of 200 ℃ to 400 ℃ and a pressure in the range of 10MPa (MPa) to 40MPa (MPa).
As shown in fig. 1, in the embodiment of the present application, a flue gas duct sensor 10 capable of monitoring the flue gas temperature, the flue gas pressure, and the flue gas flow inside the flue gas duct 9 is disposed on the flue gas duct 9. Specifically, the flue gas pipeline sensor 10 is additionally arranged on the flue gas pipeline 9, so that the temperature, the pressure and the flow of the flue gas can be monitored in real time, and an operator can timely adjust the temperature, the pressure and the flow of the flue gas according to the working condition of the flue gas turbine 1 in real time.
In another preferred embodiment of the present application, as shown in fig. 1, a second regulating valve 20 is provided on the flue gas duct 9 to regulate the size of the cross-sectional caliber of the flue gas duct 9. Specifically, through add this second governing valve 20 on this flue gas pipeline 9 and through rotating this second governing valve 20, alright realize the regulation to the size of this flue gas pipeline 9's section bore to reach and in time adjust effectively the flow of the flue gas that flows through this flue gas pipeline 9 in the unit interval, so that it can satisfy the needs that flue gas turbine 1 does work, and further, make this flue gas turbine 1 can drive this main fan 2 smoothly and rotate.
It should be noted that the second regulating valve 20 may be a common manual valve or a solenoid valve, and it should be understood that the requirements of one-way flow and reverse blocking are satisfied regardless of whether the second regulating valve 20 is a manual valve or a solenoid valve.
As shown in fig. 1, in the embodiment of the present application, the fan starting device further includes a main controller 30, wherein the main controller 30 is electrically connected to the steam duct sensor 6 and the flue gas duct sensor 10 respectively. Specifically, the steam pipe sensor 6 detects the steam temperature, the steam pressure and the steam flow in the steam pipe 5, and then transmits the detected steam temperature, steam pressure and steam flow to the main controller 30 in the form of wired or wireless electric signals, and the main controller 30 processes the received electric signals and finally processes the electric signals into specific numerical parameters.
Similarly, the flue gas temperature, the flue gas pressure and the flue gas flow in the flue gas pipeline 9 detected by the flue gas pipeline sensor 10 are transmitted to the main controller 30 in the form of wired or wireless electric signals, and the main controller 30 processes the received electric signals and finally processes the electric signals into specific numerical parameters.
It should be noted that the process of processing the received electrical signal by the master 30 is well known to those skilled in the art, and for the sake of brevity, will not be described in detail herein.
In the embodiment of the present application, as shown in fig. 1, the output shaft of the flue gas turbine 1 is coaxially connected to the input shaft of the main fan 2.
The output shaft of the main fan 2 is coaxially connected with the input shaft of the motor 3. Thus, the rotation of the output shaft of the flue gas turbine 1 can drive the rotation of the input shaft of the main fan 2, and the rotation of the input shaft of the main fan 2 can drive the rotation of the motor 3, so that the purpose of enabling the motor 3 to generate power is achieved.
In the embodiment of the present application, the electric machine 3 comprises an electric motor or a generator.
As described above, before the catalytic cracking apparatus is not normally operated, the following catalytic cracking regenerator 8 in the catalytic cracking apparatus is also not normally operated, and at this time, the supply amount of the flue gas generated by the catalytic cracking regenerator 8 is unstable, and the flue gas cannot be normally supplied to the flue gas turbine 1 sufficiently, so that the flue gas turbine 1 cannot drive the main fan 2, and at the same time, the main fan 2 cannot be started, that is, the main fan 2 cannot be normally rotated. In order to start the main fan 2 before the catalytic cracking unit operates normally, the steam pipe network 4 can be additionally arranged, high-temperature and high-pressure steam in the steam pipe network 4 is conveyed to the inside of the flue gas turbine 1, the flue gas turbine 1 is acted and the main fan 2 is dragged to rotate, the main fan 2 rotates to drive the motor 3 to rotate and generate electricity, and therefore the situation that before the catalytic cracking unit operates normally, a standby fan needs to be started first and is provided with a large-capacity starting device (such as an independent transformer, a soft starting device and the like) for starting the main fan 2 is avoided. In addition, this application has also avoided main fan 2 to cause the impact to the electric wire netting when starting effectively through the mode of addding steam pipe network 4 and starting main fan 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A fan starting device, comprising:
the system comprises a flue gas turbine, a main fan and a motor, wherein the flue gas turbine, the main fan and the motor are sequentially connected; and
the steam pipe network, the steam pipe network with the flue gas turbine is connected, wherein, the steam pipe network to the inside high-pressure steam of high temperature is carried in order to right to the flue gas turbine does work and drives the flue gas turbine rotates, through the flue gas turbine rotates and drives the main air fan rotates, through the main air fan rotates and drives the motor rotates.
2. The fan starting device of claim 1 wherein the outlet of the steam pipe network is connected to the first inlet of the flue gas turbine via a steam line.
3. The fan starting device according to claim 2, wherein a steam pipeline sensor capable of monitoring the steam temperature, the steam pressure and the steam flow in the steam pipeline is arranged on the steam pipeline.
4. The fan starting device according to claim 2, wherein a first adjusting valve capable of adjusting the size of the cross-sectional caliber of the steam pipeline is further provided on the steam pipeline.
5. The fan startup device of claim 3, further comprising a catalytic cracking regenerator, the catalytic cracking regenerator being connected to the second inlet of the flue gas turbine by a flue gas duct.
6. The fan starting device according to claim 5, wherein a flue gas duct sensor capable of monitoring a flue gas temperature, a flue gas pressure and a flue gas flow rate inside the flue gas duct is arranged on the flue gas duct.
7. The fan starting device according to claim 5, wherein a second regulating valve capable of regulating the size of the section caliber of the flue gas duct is arranged on the flue gas duct.
8. The fan starting device according to claim 6, further comprising a master controller, wherein the master controller is electrically connected to the steam duct sensor and the flue gas duct sensor, respectively.
9. The fan starting device according to claim 1, wherein the output shaft of the flue gas turbine is coaxially connected to the input shaft of the main fan;
the output shaft of the main fan is coaxially connected with the input shaft of the motor.
10. The fan starting device of any one of claims 1 to 9 wherein the electric machine comprises an electric motor or a generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977232.5A CN112664321A (en) | 2019-10-15 | 2019-10-15 | Fan starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977232.5A CN112664321A (en) | 2019-10-15 | 2019-10-15 | Fan starting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112664321A true CN112664321A (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910977232.5A Pending CN112664321A (en) | 2019-10-15 | 2019-10-15 | Fan starting device |
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| CN (1) | CN112664321A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070051112A1 (en) * | 2005-04-18 | 2007-03-08 | Rolf Althaus | Turbo set with starting device |
| CN101418228A (en) * | 2007-10-26 | 2009-04-29 | 中国石油化工集团公司 | Recovery system of full pressure energy for catalytic cracking flue gas turbine |
| CN201779640U (en) * | 2010-06-13 | 2011-03-30 | 国电浙江北仑第三发电有限公司 | Set boiler |
| CN201884073U (en) * | 2010-12-10 | 2011-06-29 | 成都发动机（集团）有限公司 | Three-component unit for petrochemistry |
| CN206799540U (en) * | 2017-06-14 | 2017-12-26 | 正和集团股份有限公司 | A kind of device for solving catalysis main air blower entrance blast cap frosting |
-
2019
- 2019-10-15 CN CN201910977232.5A patent/CN112664321A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070051112A1 (en) * | 2005-04-18 | 2007-03-08 | Rolf Althaus | Turbo set with starting device |
| CN101418228A (en) * | 2007-10-26 | 2009-04-29 | 中国石油化工集团公司 | Recovery system of full pressure energy for catalytic cracking flue gas turbine |
| CN201779640U (en) * | 2010-06-13 | 2011-03-30 | 国电浙江北仑第三发电有限公司 | Set boiler |
| CN201884073U (en) * | 2010-12-10 | 2011-06-29 | 成都发动机（集团）有限公司 | Three-component unit for petrochemistry |
| CN206799540U (en) * | 2017-06-14 | 2017-12-26 | 正和集团股份有限公司 | A kind of device for solving catalysis main air blower entrance blast cap frosting |
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Application publication date: 20210416 |
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