CN214221280U - Blast furnace gas residual pressure turbine device and control system - Google Patents
Blast furnace gas residual pressure turbine device and control system Download PDFInfo
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- CN214221280U CN214221280U CN202023084473.4U CN202023084473U CN214221280U CN 214221280 U CN214221280 U CN 214221280U CN 202023084473 U CN202023084473 U CN 202023084473U CN 214221280 U CN214221280 U CN 214221280U
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Abstract
A blast furnace gas excess pressure turbine device comprises a blast furnace, a blast furnace pressure reducing module and a gas turbine, wherein the blast furnace pressure reducing module is connected between the blast furnace and a user, the gas turbine is connected with the blast furnace pressure reducing module in parallel, a first gas cutting module is arranged between an inlet of the blast furnace pressure reducing module and an inlet of the gas turbine, a second gas cutting module is arranged between an outlet of the gas turbine and an outlet of the blast furnace pressure reducing module, the first gas cutting module comprises a cutting valve group, a quick cut-off valve and a hydraulic adjusting butterfly valve which are sequentially connected in series, double insurance of emergency fault shutdown of a blast furnace gas excess pressure turbine device unit is realized through reasonable arrangement of part structures, the starting and the rising speed of the blast furnace gas excess pressure turbine device unit are accurately controlled, the rotating speed in the process of transcritical and grid connection is increased, the automation degree of the machine starting operation of the blast furnace gas residual pressure turbine device unit and the success rate of the machine starting operation are improved, and the working intensity of operators is reduced.
Description
Technical Field
The utility model belongs to the technical field of the gas turbine, concretely relates to blast furnace gas residual pressure turbine device and control system.
Background
The conventional blast furnace gas residual pressure turbine unit is regulated by using a stationary blade in the processes of starting, raising speed, grid connection and top pressure control; when the unit is stopped in an emergency fault, the unit is stopped in an emergency only by adopting the quick cut-off valve control arranged on the inlet pipeline and cutting off the blast furnace gas entering the blast furnace gas residual pressure turbine device. After the unit runs for a long time, the static blade of the blast furnace gas residual pressure turbine device is abraded by the dust particles in the blast furnace gas, so that the static blade cannot be completely closed, and the difficulty in controlling the starting speed of the unit again is increased. After the rapid inlet cutoff valve is operated for a long time, the rapid inlet cutoff valve cannot be normally closed under the influence of adhesion of coal tar in blast furnace gas, so that the risk of overspeed accidents of a unit during emergency shutdown is increased. Because the blast furnace gas volume is influenced by the smelting intensity of the blast furnace, the fluctuation of the gas volume is large, and in the case of small flow, in order to ensure the pressure value of the top of the blast furnace, at the moment, the static blade of the blast furnace gas excess pressure turbine device needs to be closed to operate at a small angle, and the long-time operation can cause fatigue damage to the static blade of the blast furnace gas excess pressure turbine device.
The existing blast furnace gas excess pressure turbine unit solves the problem that the rotating speed of the blast furnace gas excess pressure turbine device cannot be controlled in the starting speed-up process due to the abrasion of a static blade of the blast furnace gas excess pressure turbine device by connecting a small-caliber electric adjusting butterfly valve in parallel beside an inlet butterfly valve. However, the following problems still exist: firstly, when the unit is shut down due to an emergency failure, once the quick-switching valve fails and cannot be normally closed, the unit of the blast furnace gas residual pressure turbine device generates an overspeed accident; due to the influence of the valve adjusting performance and the caliber, the control effect of the rotating speed in the starting and accelerating process is not ideal, particularly, the flexible shaft blast furnace gas excess pressure turbine device needs to rapidly cross the critical rotating speed of the blast furnace gas excess pressure turbine device in the accelerating process, an electric adjusting butterfly valve with a small caliber cannot meet the requirement of the accelerating speed, needs to be matched with a fixed blade of the blast furnace gas excess pressure turbine device for adjustment, and increases the adjusting complexity; and thirdly, the top pressure of the blast furnace is controlled by adopting the whole process of the stator blade, so that the fatigue damage of the stator blade is easily aggravated when the blast furnace runs at a small flow and a small angle.
Disclosure of Invention
To the above problem, the utility model aims at providing a blast furnace gas excess pressure turbine device and control system, through the reasonable setting to the part structure, realize the double insurance of blast furnace gas excess pressure turbine device unit emergency fault shut down, accurate control blast furnace gas excess pressure turbine device unit opens quick-witted liter speed, cross critical and the rotational speed of the in-process that is incorporated into the power networks, the degree of automation that has promoted blast furnace gas excess pressure turbine device unit and opened quick-witted operation and the success rate of opening the machine, operating personnel's working strength has been reduced.
In order to achieve the above object, the utility model discloses the technical scheme who takes includes:
the utility model provides a blast furnace gas excess pressure turbine device, include the blast furnace and link the blast furnace depressurization module of establishing between blast furnace and user, still include the parallelly connected coal gas turbine with blast furnace depressurization module, the inlet line between blast furnace depressurization module entry and coal gas turbine entry is equipped with first coal gas and cuts off the module, the outlet line is equipped with second coal gas and cuts off the module between coal gas turbine export and blast furnace depressurization module export, first coal gas cuts off the module and includes the valve unit that cuts off that establishes ties in proper order, quick cut-off valve and hydraulic control butterfly valve.
Preferably, the cut-off valve group comprises a first electric butterfly valve and a first gate valve which are sequentially connected in series.
Preferably, the second gas cutting module comprises a second electric butterfly valve and a second gate valve which are sequentially connected in series.
Preferably, the blast furnace pressure reduction module includes a single-acting bypass valve, a first double-acting bypass valve and a second double-acting bypass valve connected in parallel with each other.
Preferably, a gravity dust collector and a gas cleaner which are connected in series in sequence are further arranged between the blast furnace and the first gas cutting module.
A blast furnace gas excess pressure turbine control system comprises a blast furnace gas excess pressure turbine device, a power oil station and a servo oil cylinder, wherein the power oil station, the servo oil cylinder and a hydraulic regulating butterfly valve are sequentially connected, and the blast furnace gas excess pressure turbine device is the blast furnace gas excess pressure turbine device disclosed by the utility model;
the quick-closing control module comprises a first cartridge valve, a second cartridge valve and a first electromagnetic directional valve, the power oil station is connected with the first electromagnetic directional valve, the first electromagnetic directional valve is respectively connected with the first cartridge valve and the second cartridge valve to form a loop, the first cartridge valve is connected with a rod cavity of the servo oil cylinder, and the second cartridge valve is connected with a rodless cavity of the servo oil cylinder;
the gas turbine static blade rotating speed adjusting and top pressure control device further comprises a control module for adjusting the rotating speed of the gas turbine static blade and controlling top pressure.
The servo regulating module is connected with the quick-closing control module in parallel and comprises an electro-hydraulic servo valve, a second electromagnetic reversing valve, a first one-way valve, a second one-way valve and a third one-way valve;
the power oil station is connected with a second electromagnetic reversing valve, the second electromagnetic reversing valve is sequentially connected with a first one-way valve and an electro-hydraulic servo valve, two working oil ports of the electro-hydraulic servo valve are respectively connected with a second one-way valve and a third one-way valve, the second one-way valve is connected with a rod cavity of a servo oil cylinder, the third one-way valve is connected with a rodless cavity of the servo oil cylinder, and the electro-hydraulic servo valve, the first one-way valve, the second one-way valve and the third one-way valve are connected with the power oil station to form a loop.
And the manual adjusting module is connected with the quick-closing control module in parallel, the manual adjusting module comprises a third electromagnetic directional valve, the third electromagnetic directional valve is connected with the power oil station and forms a loop, and two working oil ports of the third electromagnetic directional valve are respectively connected with a rod cavity and a rodless cavity of the servo oil cylinder.
Preferably, an interlocking valve bank and a speed regulating valve bank are sequentially connected between the third electromagnetic reversing valve and the servo oil cylinder.
Preferably, a filter group is arranged between the output end of the power oil station and the servo adjusting module and between the output end of the power oil station and the manual adjusting module.
Compared with the prior art, the utility model has the advantages that:
(1) the blast furnace gas residual pressure turbine device of the utility model is reasonably arranged by the component structure, is closed when the quick cut-off valve fails to close, cuts off gas at the inlet of the gas turbine, ensures the emergency stop of the unit, realizes the double insurance of the emergency stop of the unit of the blast furnace gas residual pressure turbine device, greatly reduces the probability of the unit generating overspeed accidents caused by the failure of the quick cut-off valve in the emergency stop process, and improves the safety and reliability of the unit operation; meanwhile, the opening of a hydraulic adjusting butterfly valve is controlled, so that the starting and the speed-up control of the unit are realized; meanwhile, when the load of the blast furnace is reduced and the gas quantity is small, the hydraulic adjusting butterfly valve can also be involved in the control of the top pressure of the blast furnace, so that the constant pressure of the blast furnace can be adjusted and the angle of the static blade can be corrected.
(2) The utility model discloses a blast furnace gas excess pressure turbine device and control system through the reasonable setting to the part structure, 1.5 ~ 2 seconds surge regulation butterfly valve quick-closing after emergency fault stop signal sends, cuts off coal gas turbine entry coal gas, guarantees unit emergency stop, realizes the double insurance that blast furnace gas excess pressure turbine device unit emergency fault stopped.
(3) The utility model discloses a blast furnace gas excess pressure turbine device and control system, through the reasonable setting to the part structure, through the aperture of control system control surge regulation butterfly valve, realize steady rising speed, to the quick critical speed that passes through of flexible axle blast furnace gas excess pressure turbine device unit, it is incorporated into the power networks when the rotational speed reaches 2900r/min, reopen the regulation butterfly valve that surges, reduce the fatigue damage that the stator blade produced because the low-angle operation, the service life of blade has been improved, reduce user's maintenance cost.
(4) The utility model discloses a blast furnace gas excess pressure turbine device and control system through the reasonable setting to the part structure, has promoted the degree of automation that blast furnace gas excess pressure turbine device unit opened the quick-witted operation and has opened the success rate of machine, has reduced operating personnel's working strength.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a blast furnace gas pressure turbine according to the present invention;
FIG. 2 is a schematic structural diagram of a blast furnace gas excess pressure turbine control system according to the present invention;
the reference numerals in the figures denote:
1 a first gas cutoff module; 11 a first electric butterfly valve; 12 a first gate valve; 13 quick cut-off valve; 14, a hydraulic adjusting butterfly valve; 2 a second gas cutoff module; 21 a second electric butterfly valve; 22 a second gate valve;
3, a blast furnace pressure reduction module; 31 a single-acting bypass valve; 32 a first double-acting bypass valve; 33 a second double-acting bypass valve; 4, blast furnace; 5, a gas turbine; 6, a gravity dust remover; 7 gas cleaner. A power oil station; b, a control module; c, servo oil cylinder; d, a fast-closing control module; d1 first cartridge valve; d2 second cartridge valve; d3 first electromagnetic directional valve; e, a servo adjusting module; e1 electro-hydraulic servo valve; e2 second electromagnetic directional valve; e31 first check valve; e32 second check valve; e33 third check valve, F manual regulation module; f1 third electromagnetic directional valve; f2 interlocking valve set; f3 speed regulating valve group; f4 filter group.
Detailed Description
The first electric butterfly valve 11 of the utility model is an electric butterfly valve with the model number D943PT-6, and the other devices are the existing devices; wherein the first gate valve 12 is preferably F941X-4, the quick-cut valve 13 is preferably KD743PT-6, the hydraulically-regulated butterfly valve 14 is preferably TDC743H-6, the second electrically-operated butterfly valve 21 is preferably D943PT-2.5, and the second gate valve 22 is preferably F941X-4.
The present invention will be described in further detail with reference to the accompanying drawings, which are provided for illustration and not for limitation of the invention.
A blast furnace gas residual pressure turbine device comprises a blast furnace 4, a blast furnace pressure reduction module 3 connected between the blast furnace 4 and a user, and a gas turbine 5 connected in parallel with the blast furnace pressure reduction module 3; an inlet pipeline between an inlet of the blast furnace depressurization module 3 and an inlet of the gas turbine 5 is provided with a first gas cutting module 1, and an outlet pipeline between an outlet of the gas turbine 5 and an outlet of the blast furnace depressurization module 3 is provided with a second gas cutting module 2;
the function is as follows: the blast furnace 4 outputs high-pressure coal gas, and the high-pressure coal gas is conveyed to a user after being subjected to pressure reduction through the blast furnace pressure reduction module 3; the gas turbine 5 is connected in parallel to the blast furnace depressurization module 3, so that the gas turbine 5 can utilize the residual pressure waste heat of the gas to work through the expansion of the turbine of the unit to drive the generator to generate power while the high-pressure gas output by the blast furnace 4 is depressurized; when the gas turbine 5 breaks down and stops, the first gas cutting module 1 is closed and is used for cutting high-pressure gas entering the gas turbine 5, and meanwhile, the second gas cutting module is closed and is used for cutting low-pressure gas output by the blast furnace depressurization module 3 and avoiding backflow of the gas;
the first gas cutting module 1 comprises a cutting valve group, a quick cutting valve 13 and a hydraulic adjusting butterfly valve 14 which are sequentially connected in series;
the function is as follows: when the gas turbine 5 is stopped due to a fault, the quick cut-off valve 13 is used for automatically closing in an emergency and temporarily cutting off the gas input into the gas turbine 5, and then the gas input into the gas turbine 5 is cut off for a long time by closing the cut-off valve group; the hydraulic adjusting butterfly valve 14 is used for closing when the quick cut-off valve 13 fails to close, cutting off gas at the inlet of the gas turbine 5, ensuring the unit to be stopped emergently, realizing double insurance of the unit of the blast furnace gas residual pressure turbine device in emergency fault, greatly reducing the probability of overspeed accidents of the unit caused by the failure of the quick cut-off valve in the process of emergency stop, and improving the safety and reliability of the unit operation;
when the gas turbine 5 works normally, the starting and the speed-up control of the unit can be realized by controlling the opening of the hydraulic adjusting butterfly valve 14; meanwhile, when the load of the blast furnace is reduced and the gas quantity is small, the hydraulic adjusting butterfly valve 14 can also be involved in the control of the top pressure of the blast furnace, so that the constant pressure of the blast furnace can be adjusted and the angle of the static blade can be corrected.
Specifically, the cut-off valve group comprises a first electric butterfly valve 11 and a first gate valve 12 which are sequentially connected in series;
the function is as follows: the first electric butterfly valve 11 and the first gate valve 12 are closed, and the coal gas input into the coal gas turbine 5 is cut off for a long time in a matching mode.
Specifically, the second gas cutting module 2 comprises a second electric butterfly valve 21 and a second gate valve 22 which are sequentially connected in series;
the function is as follows: the second electric butterfly valve 21 and the second gate valve 22 are closed to realize the long-term cut-off of the coal gas flowing back into the coal gas turbine 5.
Specifically, the blast furnace pressure reduction module 3 comprises a single-acting bypass valve 31, a first double-acting bypass valve 32 and a second double-acting bypass valve 33 which are connected in parallel;
the function is as follows: the single-acting bypass valve 31, the first double-acting bypass valve 32 and the second double-acting bypass valve 33 are matched to realize the purpose of conveying the high-pressure coal gas output by the blast furnace 4 to a user after the high-pressure coal gas is depressurized.
Specifically, a gravity dust collector 6 and a gas cleaner 7 which are sequentially connected in series are also arranged between the blast furnace 4 and the first gas cutting module 1;
the function is as follows: the gravity dust collector 6 and the gas cleaner 7 are matched to realize dust removal and cleaning of high-pressure gas output by the blast furnace 4.
A blast furnace gas excess pressure turbine control system comprises a blast furnace gas excess pressure turbine device, a power oil station A and a servo oil cylinder C, wherein the power oil station A, the servo oil cylinder C and a hydraulic adjusting butterfly valve 14 are sequentially connected, and the blast furnace gas excess pressure turbine device is the blast furnace gas excess pressure turbine device of the utility model;
the function is as follows: the power oil station A and the servo oil cylinder C are used for matching to realize the opening and closing of the hydraulic adjusting butterfly valve 14;
the quick-closing control module D is arranged between the power oil station A and the servo oil cylinder C and comprises a first cartridge valve D1, a second cartridge valve D2 and a first electromagnetic directional valve D3, the power oil station A is connected with the first electromagnetic directional valve D3, the first electromagnetic directional valve D3 is respectively connected with a first cartridge valve D1 and a second cartridge valve D2 to form a loop, the first cartridge valve D1 is connected with a rod cavity of the servo oil cylinder C, and the second cartridge valve D2 is connected with a rodless cavity of the servo oil cylinder C;
the control module B is used for realizing the rotation speed adjustment and the top pressure control of the stationary blade of the gas turbine;
the function is as follows: under normal conditions, the first electromagnetic directional valve D3 is in a constant power-off state, high-pressure hydraulic oil output by the power oil station A enters the locking oil ports of the first cartridge valve D1 and the second cartridge valve D2 through the first electromagnetic directional valve D3, so that the oil inlet and outlet ports of the first cartridge valve D1 and the second cartridge valve D2 are in a locking state, and the hydraulic adjusting butterfly valve 14 is normally opened;
when the unit is in emergency shutdown, if the quick cut-off valve 13 fails to close, an overspeed accident occurs to the unit, a command is sent by the control module B, the first electromagnetic directional valve D3 is powered on, the closed oil path of the first cartridge valve D1 and the second cartridge valve D2 is opened, high-pressure hydraulic oil enters the rodless cavity of the servo oil cylinder 7 through the second cartridge valve D2 to push the piston of the servo oil cylinder 7 to move towards the closed position quickly, oil in the rod cavity of the servo oil cylinder 7 is pushed by the piston to return to the power oil station A through the first cartridge valve D1, the hydraulic regulating butterfly valve 14 is closed quickly, the hydraulic regulating butterfly valve 14 is ensured to be closed quickly in 1.5-2 seconds after the emergency shutdown signal is sent in the whole process, the inlet gas of the gas turbine 5 is cut off, the emergency shutdown of the unit is ensured, double insurance of the emergency shutdown of the blast furnace gas excess pressure turbine unit is realized, and the probability of the overspeed accident occurs to the unit due to the failure of the quick cut-off valve in the emergency shutdown process is greatly reduced, the safety and reliability of the unit operation are improved;
the first electromagnetic directional valve D3 is a two-position two-way electromagnetic directional valve.
Specifically, the system further comprises a servo adjusting module E connected with the quick-closing control module D in parallel, wherein the servo adjusting module E comprises an electro-hydraulic servo valve E1, a second electromagnetic reversing valve E2, a first check valve E31, a second check valve E32 and a third check valve E33; the power oil station A is connected with a second electromagnetic reversing valve E2, the second electromagnetic reversing valve E2 is sequentially connected with a first check valve E31 and an electro-hydraulic servo valve E1, two working oil ports of the electro-hydraulic servo valve E1 are respectively connected with a second check valve E32 and a third check valve E33, the second check valve E32 is connected with a rod cavity of a servo oil cylinder C, the third check valve E33 is connected with a rodless cavity of the servo oil cylinder C, and the electro-hydraulic servo valve E1, the first check valve E31, the second check valve E32 and the third check valve E33 are connected with the power oil station A to form a loop;
the function is as follows: the second electromagnetic directional valve E2 is electrified, and high-pressure hydraulic oil output by the power oil station A enters the unlocking oil ports of the first check valve E31, the second check valve E32 and the third check valve E33 through the second electromagnetic directional valve E2 and is pumped through the front and rear oil ways of the check valves; after the electro-hydraulic servo valve E1 receives the instruction of the control module B, high-pressure hydraulic oil is accurately controlled to enter the servo oil cylinder C, the accurate control of the opening of the hydraulic adjusting butterfly valve 14 is achieved, the starting and the speed-up control of the unit is achieved, the fatigue damage of the static blades caused by small-angle operation is integrally reduced, the service life of the blades is prolonged, and the maintenance cost of a user is reduced.
The hydraulic control system comprises a servo oil cylinder C, a quick-closing control module D, a manual adjusting module F, a hydraulic control module and a hydraulic control module, wherein the manual adjusting module F is connected with the quick-closing control module D in parallel and comprises a third electromagnetic directional valve F1, the third electromagnetic directional valve F1 is connected with the power oil station A to form a loop, and two working oil ports of the third electromagnetic directional valve F1 are respectively connected with a rod cavity and a rodless cavity of the servo oil cylinder C;
the function is as follows: when the electro-hydraulic servo valve E1 breaks down, the second electromagnetic directional valve E2 loses electricity, the three one-way valves are locked, the front oil circuit and the rear oil circuit of the electro-hydraulic servo valve E1 are disconnected and isolated from the system, at the moment, the third electromagnetic directional valve F1 is manually controlled to be opened, high-pressure hydraulic oil enters the servo oil cylinder C, and the unit is prevented from being stopped.
Wherein, the third electromagnetic directional valve F1 is a three-position four-way electromagnetic directional valve.
Specifically, an interlocking valve group F2 and a speed regulating valve group F3 are sequentially connected between the third electromagnetic reversing valve F1 and the servo oil cylinder C;
the function is as follows: the high-pressure hydraulic oil is manually controlled by a third electromagnetic directional valve F1 through an interlocking valve group F2 and a speed regulating valve group F3 to enter a servo oil cylinder C, and the control of the opening degree of a hydraulic regulating butterfly valve 14 is realized.
Specifically, a filter group F4 is arranged between the output end of the power oil station A and the servo adjusting module E and between the output end of the power oil station A and the manual adjusting module F;
the function is as follows: the filter group F4 is used for filtering the high-pressure hydraulic oil output by the power oil station A.
Example 1
When the unit is in emergency shutdown, if the quick cut-off valve 13 fails to close, an overspeed accident occurs to the unit, a command is sent by the control module B, the first electromagnetic directional valve D3 is powered on, the closed oil path of the first cartridge valve D1 and the second cartridge valve D2 is opened, high-pressure hydraulic oil enters the rodless cavity of the servo oil cylinder 7 through the second cartridge valve D2 to push the piston of the servo oil cylinder 7 to move towards the closed position quickly, oil in the rod cavity of the servo oil cylinder 7 is pushed by the piston to return to the power oil station A through the first cartridge valve D1, the hydraulic regulating butterfly valve 14 is closed quickly, the hydraulic regulating butterfly valve 14 is ensured to be closed quickly in 1.5-2 seconds after the emergency shutdown signal is sent in the whole process, the inlet gas of the gas turbine 5 is cut off, the emergency shutdown of the unit is ensured, double insurance of the emergency shutdown of the blast furnace gas excess pressure turbine unit is realized, and the probability of the overspeed accident occurs to the unit due to the failure of the quick cut-off valve in the emergency shutdown process is greatly reduced, the safety and reliability of the unit operation are improved.
Example 2
Example 3
The jacking set value of the hydraulic adjusting butterfly valve 14 is set to be 1-2 kpa higher than the jacking set value of the stationary blade of the gas turbine 5, when the hydraulic adjusting butterfly valve 14 is involved in the adjusting control of the constant pressure of the blast furnace, the measured value of the jacking is higher than the jacking set value of the stationary blade of the gas turbine 5, and at the moment, the stationary blade of the gas turbine 5 is automatically opened; when the opening degree of the static blade of the gas turbine 5 is larger than the minimum safe operation angle, the hydraulic regulating butterfly valve 14 automatically and slowly opens until the full opening is realized. The fatigue damage of the stationary blade of the gas turbine device caused by small-angle operation is reduced integrally, the service life of the blade is prolonged, and the maintenance cost of a user is reduced.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of 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, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of the various embodiments of the present disclosure may be made, and the same should be considered as the invention of the present disclosure as long as the combination does not depart from the spirit of the present disclosure.
Claims (10)
1. The utility model provides a blast furnace gas excess pressure turbine device, includes blast furnace (4) and links blast furnace depressurization module (3) of establishing between blast furnace (4) and user, still include with parallelly connected coal gas turbine (5) of blast furnace depressurization module (3), the inlet pipeline between blast furnace depressurization module (3) entry and coal gas turbine (5) entry is equipped with first coal gas and cuts off module (1), and the outlet pipeline is equipped with second coal gas and cuts off module (2) between coal gas turbine (5) export and blast furnace depressurization module (3) export, its characterized in that, first coal gas cuts off module (1) including the valves that cut off, quick-operation valve (13) and the regulation butterfly valve (14) that surges that establish ties in proper order.
2. The blast furnace gas overbottom pressure turbine installation according to claim 1, characterized in that the shut-off valve group comprises a first electric butterfly valve (11) and a first gate valve (12) connected in series in succession.
3. The blast furnace gas overbottom pressure turbine installation according to claim 1, characterized in that the second gas shut-off module (2) comprises a second electric butterfly valve (21) and a second gate valve (22) connected in series in succession.
4. The blast furnace gas top pressure turbine installation according to claim 1, characterized in that the blast furnace pressure reduction module (3) comprises a single-acting bypass valve (31), a first double-acting bypass valve (32) and a second double-acting bypass valve (33) connected in parallel with each other.
5. The blast furnace gas excess pressure turbine installation according to any of claims 1 to 4, characterized in that a gravity dust collector (6) and a gas cleaner (7) are connected in series in sequence between the blast furnace (4) and the first gas cutting module (1).
6. A blast furnace gas excess pressure turbine control system is characterized by comprising a blast furnace gas excess pressure turbine device, a power oil station (A) and a servo oil cylinder (C), wherein the power oil station (A), the servo oil cylinder (C) and the hydraulic adjusting butterfly valve (14) are sequentially connected, and the blast furnace gas excess pressure turbine device is the blast furnace gas excess pressure turbine device according to any one of claims 1 to 5;
the quick-closing control system is characterized by further comprising a quick-closing control module (D) arranged between the power oil station (A) and the servo oil cylinder (C), wherein the quick-closing control module (D) comprises a first cartridge valve (D1), a second cartridge valve (D2) and a first electromagnetic directional valve (D3), the power oil station (A) is connected with the first electromagnetic directional valve (D3), the first electromagnetic directional valve (D3) is respectively connected with the first cartridge valve (D1) and the second cartridge valve (D2) and forms a loop, the first cartridge valve (D1) is connected with a rod cavity of the servo oil cylinder (C), and the second cartridge valve (D2) is connected with a rodless cavity of the servo oil cylinder (C);
the gas turbine static blade rotating speed adjusting and top pressure control device further comprises a control module (B) for realizing the rotating speed adjustment and top pressure control of the gas turbine static blade.
7. The blast furnace gas top pressure turbine control system according to claim 6, further comprising a servo regulation module (E) connected in parallel with the quick-closing control module (D), the servo regulation module (E) comprising an electro-hydraulic servo valve (E1), a second solenoid directional valve (E2), a first check valve (E31), a second check valve (E32), and a third check valve (E33);
the power station (A) is connected with a second electromagnetic reversing valve (E2), the second electromagnetic reversing valve (E2) is sequentially connected with a first check valve (E31) and an electro-hydraulic servo valve (E1), two working oil ports of the electro-hydraulic servo valve (E1) are respectively connected with a second check valve (E32) and a third check valve (E33), the second check valve (E32) is connected with a rod cavity of a servo oil cylinder (C), the third check valve (E33) is connected with a rodless cavity of the servo oil cylinder (C), and the electro-hydraulic servo valve (E1), the first check valve (E31), the second check valve (E32) and the third check valve (E33) are connected with the power station (A) to form a loop.
8. The blast furnace gas top pressure turbine control system according to claim 7, further comprising a manual regulating module (F) connected in parallel with the quick-closing control module (D), wherein the manual regulating module (F) comprises a third electromagnetic directional valve (F1), the third electromagnetic directional valve (F1) is connected with the power oil station (A) and forms a loop, and two working oil ports of the third electromagnetic directional valve (F1) are respectively connected with a rod cavity and a rodless cavity of the servo oil cylinder (C).
9. The blast furnace gas top pressure turbine control system according to claim 8, wherein an interlocking valve group (F2) and a speed regulating valve group (F3) are further connected between the third electromagnetic directional valve (F1) and the servo cylinder (C) in sequence.
10. The blast furnace gas top pressure turbine control system according to any one of claims 7 to 9, wherein a filter group (F4) is provided between the output end of the power oil station (a) and the servo regulation module (E) and the manual regulation module (F).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023084473.4U CN214221280U (en) | 2020-12-18 | 2020-12-18 | Blast furnace gas residual pressure turbine device and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023084473.4U CN214221280U (en) | 2020-12-18 | 2020-12-18 | Blast furnace gas residual pressure turbine device and control system |
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| Publication Number | Publication Date |
|---|---|
| CN214221280U true CN214221280U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023084473.4U Active CN214221280U (en) | 2020-12-18 | 2020-12-18 | Blast furnace gas residual pressure turbine device and control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214221280U (en) |
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2020
- 2020-12-18 CN CN202023084473.4U patent/CN214221280U/en active Active
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