CN114353043A - Thermal power generating unit boiler combustion optimization control system - Google Patents
Thermal power generating unit boiler combustion optimization control system Download PDFInfo
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- CN114353043A CN114353043A CN202210010189.7A CN202210010189A CN114353043A CN 114353043 A CN114353043 A CN 114353043A CN 202210010189 A CN202210010189 A CN 202210010189A CN 114353043 A CN114353043 A CN 114353043A
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Abstract
The invention relates to the technical field of boiler combustion control, in particular to a thermal power generating unit boiler combustion optimization control system which comprises an oxygen content acquisition assembly; a steam temperature, a feed water temperature, a hearth temperature and an air supply temperature acquisition assembly; a steam pressure, water supply pressure, hearth pressure and air supply pressure acquisition assembly; a steam flow, water feed flow, air supply flow and coal feed flow acquisition assembly; a drum water level acquisition assembly; a motor power acquisition assembly; a combustion exhaust gas collection assembly; a coal supply amount adjusting assembly; an air supply amount adjusting component; a feed water amount adjusting assembly; a rotating speed adjusting component of the induced draft fan; and a slag discharge control assembly. The method breaks through the traditional regulation limitation, provides a new regulation reference index, and has an active effect on further improving the combustion effect of the boiler.
Description
Technical Field
The invention relates to the technical field of boiler combustion control, in particular to a thermal power generating unit boiler combustion optimization control system.
Background
Boiler combustion control is an important link in thermal power generation work and is directly related to the energy efficiency ratio of power generation. At present, boiler combustion regulation and control in the thermal power generation process is mainly based on traditional regulation and control, and the regulation and control object is limited to traditional parameters, so that the combustion effect of the boiler is not favorably and fully improved.
In view of this, the present application is specifically made.
Disclosure of Invention
The invention aims to provide a thermal power generating unit boiler combustion optimization control system, which breaks through the traditional regulation limitation, provides a new regulation reference index and has an active effect on further improving the combustion effect of a boiler.
The embodiment of the invention is realized by the following steps:
a thermal power generating unit boiler combustion optimizing control system comprises: an oxygen content collection assembly; a steam temperature, a feed water temperature, a hearth temperature and an air supply temperature acquisition assembly; a steam pressure, water supply pressure, hearth pressure and air supply pressure acquisition assembly; a steam flow, water feed flow, air supply flow and coal feed flow acquisition assembly; a drum water level acquisition assembly; a motor power acquisition assembly; a combustion exhaust gas collection assembly; a coal supply amount adjusting assembly; an air supply amount adjusting component; a feed water amount adjusting assembly; a rotating speed adjusting component of the induced draft fan; and a slag discharge control assembly.
Further, the combustion exhaust gas collection assembly includes: guide post and first drive assembly.
The pipe wall of the boiler waste gas pipe is provided with a collecting opening, the edge of the collecting opening is provided with a guide flange, the guide flange continuously extends along the circumferential direction of the collecting opening and is annular, and the guide flange extends outwards along the opening direction of the collecting opening.
The guide post is accommodated in the guide flange and is matched with the guide flange and the collection port. Along the opening direction of the collection port, the guide post is slidably matched with the guide flange and driven by the first driving assembly, and the guide post and the guide flange are in sliding seal.
The guide post is provided with a radial hole and an axial hole, and the radial hole is positioned at one end of the axial hole close to the boiler waste gas pipe and communicated with the axial hole.
The guide post has a first operating condition and a second operating condition. When the guide post is in the first working state, the front end of the guide post is accommodated in the guide flange, and the radial hole is closed by the guide flange. When the guide column is in the second working state, the front end of the guide column penetrates into the boiler waste gas pipe through the collecting port, and the radial hole is located in the boiler waste gas pipe and communicated with the boiler waste gas pipe.
Further, an inner cavity is formed in one end, far away from the boiler waste gas pipe, of the guide column, and the axial hole is communicated with the inner cavity.
One end of the inner cavity, which is close to the axial hole, is provided with a first opening and a second opening, the first opening is formed by the inner wall of the inner cavity and penetrates through the guide post upwards along the radial direction of the guide post, and the second opening is formed by the inner wall of the inner cavity and penetrates through the guide post downwards along the radial direction of the guide post. The cross sections of the first opening and the second opening are rectangular, the interval is reserved between the edge of the first opening and the end wall of the inner cavity close to the axial hole along the axial direction of the guide column, the edge of the second opening and the end wall of the inner cavity close to the axial hole are correspondingly arranged, and the inner wall of one side of the second opening close to the axial hole and the end wall of the inner cavity close to the axial hole are correspondingly arranged.
And a pushing piece is also arranged in the inner cavity and is arranged along the axial direction of the guide post, and the pushing piece is matched with the guide post in a sliding way and is driven by a second driver.
The combustion waste gas collecting assembly further comprises a waste gas collecting pipe, and a collecting hole for collecting combustion waste gas is formed in the waste gas collecting pipe. The waste gas collecting pipe enters the inner cavity through the first opening and is pushed to one end, close to the axial hole, of the inner cavity by the pushing piece, so that the collecting hole is communicated with the axial hole, and the combustion waste gas is collected. When the pushing piece is separated from the waste gas collecting pipe, the waste gas collecting pipe leaves the inner cavity through the second opening.
Further, the exhaust gas collection pipe comprises an outer pipe body, an end cap and a corrugated expansion pipe.
The collection hole is opened in the one end of outer body, and the other end of outer body is for opening the structure. The corrugated expansion pipe is arranged in the outer pipe body, one end of the corrugated expansion pipe is covered on the collecting hole, the other end of the corrugated expansion pipe is connected with the end cap, and the end cap seals the corrugated expansion pipe.
And a pulling part is also arranged in the inner cavity, and can move relative to the guide post along the axial direction of the guide post and is driven by a third driver.
After the waste gas collecting pipe is pushed to one end, close to the axial hole, of the inner cavity by the pushing piece, the pulling piece pulls the end cap to move towards one end far away from the axial hole, and therefore collection of combustion waste gas is achieved.
Furthermore, the pulling piece is a vacuum tube, and one end of the pulling piece, which is close to the axial hole, is in a horn shape. One side of the end cap, which is far away from the axial hole, is provided with a rubber column matched with the pulling piece.
Further, the inner wall of the collecting hole is provided with an elastic rubber layer. The end cap is close to one side of collecting the hole and still fixedly connected with stay cord, and the stay cord is the metal material, and the other end of stay cord extends to the outside of outer body through collecting the hole, and the part that the stay cord is located outer body outside is the heliciform and has coiled, the tail end fixedly connected with spheroid of stay cord.
The inner wall fixedly connected with backstop piece of inner chamber, backstop piece are close to the axial hole and set up, and the outer wall of outer body can laminate with the inner wall of inner chamber. The inner wall of one side of the second opening close to the axial hole and the side wall of one side of the stop block far away from the axial hole are positioned on the same plane.
The waste gas collecting pipe is pushed to be abutted against the stop block by the pushing piece, the pulling piece pulls the end cap to move towards one end far away from the axial hole, so that the combustion waste gas is collected, the ball body is in interference fit in the collecting hole, and the waste gas collecting pipe is sealed.
Furthermore, the cross section of the inner cavity is circular, and the inner wall of the inner cavity is subjected to smoothing treatment.
Further, a bar-shaped sliding groove is formed in the middle of the inner cavity in a concave mode through the inner wall of the inner cavity, the bar-shaped sliding groove is located on one side where the second opening is located, the bar-shaped sliding groove is located on one side, away from the axial hole, of the second opening, and the bar-shaped sliding groove penetrates through the inner wall of the second opening.
And a sliding rod is slidably accommodated in the strip-shaped sliding groove, is matched with the strip-shaped sliding groove and is driven by a fourth driver. Before the waste gas collecting pipe is placed into the inner cavity, the sliding rod is driven to abut against one side, close to the axial hole, of the second opening. Before the exhaust gas collecting pipe is sent out from the second opening, the sliding rod is retracted into the strip-shaped sliding groove.
Further, the collection aperture and the axial aperture are coaxially disposed when the exhaust collection tube is positioned within the interior cavity.
Furthermore, the axial hole and the guide post are coaxially arranged, the inner cavity and the guide post are coaxially arranged, and the collecting hole and the outer pipe body are coaxially arranged.
The technical scheme of the embodiment of the invention has the beneficial effects that:
the thermal power generating unit boiler combustion optimization control system provided by the embodiment of the invention also collects combustion waste gas combusted by the boiler in the use process, can more intuitively know the combustion condition and the combustion result in the boiler by analyzing the combustion waste gas, combines the analysis result of the combustion waste gas with other parameter data, can more comprehensively reflect the combustion condition and the combustion result of the boiler in the combustion process, controls the combustion of the boiler on the basis, and can better promote the full combustion of fuel in the boiler, improve the energy efficiency ratio and save the fuel.
In general, the thermal power generating unit boiler combustion optimization control system provided by the embodiment of the invention breaks through the traditional regulation limitation, provides a new regulation reference index, and has an active effect on further improving the combustion effect of the boiler.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic configuration diagram of a thermal power generating unit boiler combustion optimization control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a combustion exhaust gas collection assembly of a thermal power generating unit boiler combustion optimization control system according to an embodiment of the present invention;
fig. 3 is a schematic partial structural view of a combustion exhaust gas collection assembly of a thermal power generating unit boiler combustion optimization control system according to an embodiment of the present invention;
fig. 4 is an assembly schematic diagram of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of the thermal power generating unit boiler combustion optimization control system provided by the embodiment of the invention;
fig. 5 is a schematic structural diagram of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of a thermal power generating unit boiler combustion optimization control system according to an embodiment of the present invention;
fig. 6 is a schematic view of a first working state of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of the thermal power generating unit boiler combustion optimization control system according to the embodiment of the invention;
fig. 7 is a schematic diagram of a second operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the thermal power generating unit boiler combustion optimization control system according to the embodiment of the invention;
fig. 8 is a schematic diagram illustrating a third operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the combustion optimization control system of the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 9 is a schematic diagram illustrating a fourth operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the combustion optimization control system for the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 10 is a schematic diagram illustrating a fifth operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the combustion optimization control system of the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 11 is a schematic diagram illustrating a sixth operating state of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of the combustion optimization control system for a boiler of a thermal power generating unit according to the embodiment of the present invention;
fig. 12 is a schematic diagram illustrating a seventh operating state of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of the combustion optimization control system of the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 13 is a schematic view of an eighth operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the combustion optimization control system of the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 14 is a schematic diagram illustrating a ninth operating state of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of the combustion optimization control system of the boiler of the thermal power generating unit according to the embodiment of the invention;
fig. 15 is a schematic diagram illustrating a tenth operating state of the exhaust gas collecting pipe of the combustion exhaust gas collecting assembly of the combustion optimization control system for the boiler of the thermal power generating unit according to the embodiment of the present invention;
fig. 16 is a schematic diagram of an eleventh operating state of an exhaust gas collecting pipe of a combustion exhaust gas collecting assembly of a combustion optimization control system of a boiler of a thermal power generating unit according to an embodiment of the present invention.
Description of reference numerals: a thermal power generating unit boiler combustion optimization control system 1000; a combustion exhaust gas collection assembly 100; a guide post 200; a radial hole 210; an axial bore 220; an inner cavity 230; a first opening 240; a second opening 250; a pusher 260; a pulling member 270; a stop block 280; a bar-shaped chute 290; a slide lever 291; an exhaust gas collection pipe 300; a collection well 310; an elastic rubber layer 311; an outer tube 320; an end cap 330; a rubber column 331; bellows 340; a pull cord 350; a sphere 360; boiler exhaust gas pipe 400; an acquisition port 410; a guide flange 420;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "parallel," "perpendicular," and the like do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1, the present embodiment provides a combustion optimization control system 1000 for a thermal power generating unit boiler, including:
the oxygen content acquisition assembly is used for measuring oxygen content data of boiler combustion;
the steam temperature, water supply temperature, hearth temperature and air supply temperature acquisition assembly is used for measuring the steam temperature, water supply temperature, hearth temperature and air supply temperature of boiler combustion;
the steam pressure, water supply pressure, hearth pressure and air supply pressure acquisition assembly is used for measuring the steam pressure, water supply pressure, hearth pressure and air supply pressure of boiler combustion;
the steam flow, water feed flow, air supply flow and coal supply flow acquisition assembly is used for measuring the steam flow, water feed flow, air supply flow and coal supply flow of boiler combustion;
the steam drum water level acquisition assembly is used for measuring the condition of the steam drum water level;
the motor power acquisition assembly is used for measuring the motor power in the power generation process;
the combustion waste gas collecting assembly is used for collecting combustion waste gas combusted by the boiler;
a coal supply amount adjusting assembly;
an air supply amount adjusting component;
a feed water amount adjusting assembly;
a rotating speed adjusting component of the induced draft fan; and
and a slag discharge control component.
In the use, still gather the burning waste gas of boiler burning, through the analysis to burning waste gas, can know the burning situation and the burning result in the boiler more directly perceivedly, combine together burning waste gas's analysis result with other parameter data, can reflect the burning situation and the burning result of boiler in the burning process more comprehensively, control the burning of boiler on this basis, can promote the abundant burning of the fuel in the boiler better, improve the energy efficiency ratio, fuel saving.
In general, the thermal power generating unit boiler combustion optimization control system 1000 breaks through the traditional regulation limitation, gives a new regulation reference index, and has an active effect on further improving the combustion effect of the boiler.
Referring to fig. 2 to fig. 5, in the present embodiment, a combustion exhaust gas collection assembly 100 suitable for a thermal power generating unit boiler combustion optimization control system 1000 is provided, where the combustion exhaust gas collection assembly 100 includes: a guide post 200 and a first drive assembly (not shown).
The pipe wall of the boiler exhaust gas pipe 400 is provided with a collection port 410, the edge of the collection port 410 is provided with a guide flange 420, the guide flange 420 continuously extends along the circumferential direction of the collection port 410 to form a ring shape, and the guide flange 420 extends outwards along the opening direction of the collection port 410.
The guide post 200 is received in the guide flange 420, and the guide post 200 fits into the guide flange 420 and the collection port 410. In the direction of the opening of the collection port 410, the guide post 200 is slidably engaged with the guide flange 420 and driven by the first drive assembly, with a sliding seal between the guide post 200 and the guide flange 420.
The guide post 200 is opened with a radial hole 210 and an axial hole 220, and the radial hole 210 is located at one end of the axial hole 220 near the boiler exhaust gas pipe 400 and communicates with the axial hole 220.
The guide post 200 has a first operating state and a second operating state. When the guide post 200 is in the first operating state, the front end of the guide post 200 is received in the guide flange 420, and the radial hole 210 is closed by the guide flange 420. When the guide pillar 200 is in the second operation state, the front end of the guide pillar 200 penetrates into the boiler exhaust gas pipe 400 through the collecting port 410, and the radial hole 210 is located in the boiler exhaust gas pipe 400 and communicates with the boiler exhaust gas pipe 400.
Further, an inner cavity 230 is provided at an end of the guide post 200 away from the boiler exhaust gas pipe 400, and the axial hole 220 communicates with the inner cavity 230.
The inner cavity 230 is provided with a first opening 240 and a second opening 250 at one end close to the axial hole 220, the first opening 240 penetrates through the guide post 200 from the inner wall of the inner cavity 230 upwards along the radial direction of the guide post 200, and the second opening 250 penetrates through the guide post 200 from the inner wall of the inner cavity 230 downwards along the radial direction of the guide post 200.
The cross sections of the first opening 240 and the second opening 250 are rectangular, and along the axial direction of the guide post 200, a gap is formed between the edge of the first opening 240 and the end wall of the inner cavity 230 near the axial hole 220, the edge of the second opening 250 and the end wall of the inner cavity 230 near the axial hole 220 are correspondingly arranged, and the inner wall of one side of the second opening 250 near the axial hole 220 and the end wall of the inner cavity 230 near the axial hole 220 are correspondingly arranged.
Also disposed within the interior chamber 230 is a pusher 260, the pusher 260 being disposed axially along the guide post 200, the pusher 260 being slidably engaged with the guide post 200 and being driven by a second driver (not shown).
The combustion exhaust gas collection assembly 100 further includes an exhaust gas collection pipe 300, and the exhaust gas collection pipe 300 is opened with a collection hole 310 for collecting combustion exhaust gas. The exhaust gas collecting pipe 300 enters the inner cavity 230 through the first opening 240 and is pushed by the pushing member 260 to one end of the inner cavity 230 close to the axial hole 220 so that the collecting hole 310 is communicated with the axial hole 220 to collect the combustion exhaust gas. When the pusher 260 is disengaged from the exhaust collection tube 300, the exhaust collection tube 300 exits the internal cavity 230 through the second opening 250.
Specifically, the exhaust collection tube 300 includes an outer tube body 320, an end cap 330, and a bellows 340.
The collecting hole 310 is opened at one end of the outer tube 320, and the other end of the outer tube 320 is an open structure. The corrugated expansion pipe 340 is arranged in the outer pipe body 320, one end of the corrugated expansion pipe 340 covers the collecting hole 310, the other end of the corrugated expansion pipe 340 is connected with the end cap 330, and the end cap 330 seals the corrugated expansion pipe 340. The bellows 340 and the end cap 330 constitute an enclosed space communicating with the outside through the collecting hole 310.
The inner cavity 230 is further provided with a pulling member 270, and the pulling member 270 can move relative to the guide post 200 along the axial direction of the guide post 200 and is driven by a third driver (not shown).
After the exhaust gas collecting pipe 300 is pushed to one end, close to the axial hole 220, of the inner cavity 230 by the pushing piece 260, the pulling piece 270 pulls the end cap 330 to move towards one end far away from the axial hole 220, so that the exhaust gas collecting pipe 300 can actively absorb the combustion exhaust gas, the combustion exhaust gas is collected, and the collecting efficiency is improved.
The pulling member 270 is a vacuum tube, and the pulling member 270 is connected to an external vacuum device. One end of the pulling member 270 close to the axial hole 220 is trumpet-shaped, and one side of the end cap 330 far away from the axial hole 220 is provided with a rubber column 331 matched with the pulling member 270, so that the pulling member 270 and the end cap 330 can be more favorably and accurately butted. When the rubber column 331 of the end cap 330 contacts the pulling member 270, the pulling member 270 can be caused to suck the rubber column 331 by an external vacuum device, so that the end cap 330 can be smoothly pulled. In this embodiment, the outer diameter of the rubber column 331 is larger than the inner diameter of the pulling member 270, thereby facilitating the pulling member 270 to stably suck the end cap 330.
The inner wall of the collecting hole 310 is provided with an elastic rubber layer 311. One side of the end cap 330 close to the collecting hole 310 is further fixedly connected with a pull rope 350, the pull rope 350 is located in a closed space defined by the corrugated expansion pipe 340 and the end cap 330, the pull rope 350 is made of metal, the other end of the pull rope 350 extends to the outside of the outer tube 320 through the collecting hole 310, the part of the pull rope 350 located outside the outer tube 320 is spirally coiled, and the tail end of the pull rope 350 is fixedly connected with a ball 360. The part of the pull rope 350 outside the outer tube body 320 is coiled in a spiral shape, so that the occupied space can be effectively reduced, and the pull rope 350 is more regular and is not easy to knot.
The inner wall of the inner cavity 230 is fixedly connected with a stop block 280, the stop block 280 is arranged close to the axial hole 220, and the outer wall of the outer pipe body 320 can be attached to the inner wall of the inner cavity 230. The inner wall of the second opening 250 adjacent to the axial hole 220 is coplanar with the side wall of the stop block 280 away from the axial hole 220.
The cross-section of the inner cavity 230 is circular and the inner wall of the inner cavity 230 is smoothed. When the exhaust collection tube 300 is positioned within the inner chamber 230, the collection aperture 310 and the axial aperture 220 are coaxially disposed. The axial hole 220 is coaxially disposed with the guide post 200, the inner cavity 230 is coaxially disposed with the guide post 200, and the collecting hole 310 is coaxially disposed with the outer tube 320.
The inner cavity 230 is further provided with a strip-shaped sliding groove 290, the strip-shaped sliding groove 290 is formed by the inner wall of the inner cavity 230 in a concave manner, the strip-shaped sliding groove 290 is located on one side of the second opening 250 far away from the axial hole 220, and the strip-shaped sliding groove 290 penetrates through the inner wall of the second opening 250.
A sliding rod 291 is slidably accommodated in the bar-shaped sliding groove 290, the sliding rod 291 is fitted into the bar-shaped sliding groove 290, and a top side of the sliding rod 291 is driven to be flush with a mouth of the bar-shaped sliding groove 290 by a fourth driver (not shown). Before the exhaust collection tube 300 is placed into the interior 230, the sliding rod 291 is driven against the side of the second opening 250 adjacent the axial bore 220. Before the exhaust gas collection pipe 300 is sent out from the second opening 250, the slide rod 291 is retracted into the strip-shaped chute 290.
When the exhaust gas is collected, the following method can be adopted, but the method is not limited to the following method:
the sliding rod 291 is driven to abut against the side of the second opening 250 close to the axial hole 220, so that the sliding rod 291 is transversely arranged at the mouth of the second opening 250, and the exhaust gas collecting pipe 300 is prevented from falling out of the second opening 250. As shown in fig. 6.
The exhaust gas collection pipe 300 is placed into the inner cavity 230 from the first opening 240 with the collection hole 310 of the exhaust gas collection pipe 300 facing the side of the axial hole 220, as shown in fig. 7. The exhaust gas collection tube 300 is pushed against the stop block 280 by the pusher 260, as shown in FIG. 8.
The guide post 200 is extended into the boiler exhaust gas pipe 400 and the radial hole 210 is introduced into the boiler exhaust gas pipe 400 to communicate with the boiler exhaust gas pipe 400, as shown in fig. 9, during which the pusher 260 is moved synchronously with the guide post 200 to hold the exhaust gas collection pipe 300 against the stopper 280.
The pulling member 270 is used to cooperate with an external vacuum device to suck the rubber column 331 of the end cap 330, as shown in fig. 10, and pull the end cap 330 toward the end far away from the axial hole 220 to collect the combustion exhaust gas. In the process, the portion of the pulling rope 350 outside the exhaust gas collecting pipe 300 is gradually pulled into the exhaust gas collecting pipe 300, and the pulling rope 350 wound in a disk shape is released in order. After the ball 360 abuts against the outer end of the collection hole 310, as shown in fig. 11, the end cap 330 is pulled continuously, so that the ball 360 elastically compresses the elastic rubber layer 311 of the collection hole 310, and the ball 360 is in interference fit with the collection hole 310, thereby closing the collection hole 310 to seal the exhaust gas collection pipe 300, as shown in fig. 12.
The guide posts 200 are withdrawn from the boiler exhaust gas pipe 400 and back into the guide flange 420, and the radial holes 210 are again closed by the guide flange 420, as shown in fig. 13. In this process, the pushing member 260, the pulling member 270 and the guide post 200 are moved in synchronization.
The pulling member 270 is separated from the end cap 330 as shown in fig. 14.
The slide rod 291 is reset to open the second opening 250 as shown in fig. 15.
The pusher 260 is separated from the exhaust gas collection pipe 300, and the exhaust gas collection pipe 300 falls out of the second opening 250, as shown in fig. 16, thereby completing one exhaust gas collection operation.
Through the steps, the combustion waste gas can be collected at different times, so that the components of the combustion waste gas can be analyzed, and reference is provided for combustion control of the boiler.
It should be noted that, the guide post 200 and the guide flange 420 may be made of an insulating material, but are not limited thereto.
In summary, the thermal power generating unit boiler combustion optimization control system 1000 provided by the embodiment of the invention breaks through the traditional regulation limitation, provides a new regulation reference index, and has an active effect on further improving the combustion effect of the boiler.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a thermal power unit boiler combustion optimal control system which characterized in that includes:
an oxygen content collection assembly;
a steam temperature, a feed water temperature, a hearth temperature and an air supply temperature acquisition assembly;
a steam pressure, water supply pressure, hearth pressure and air supply pressure acquisition assembly;
a steam flow, water feed flow, air supply flow and coal feed flow acquisition assembly;
a drum water level acquisition assembly;
a motor power acquisition assembly;
a combustion exhaust gas collection assembly;
a coal supply amount adjusting assembly;
an air supply amount adjusting component;
a feed water amount adjusting assembly;
a rotating speed adjusting component of the induced draft fan; and
and a slag discharge control component.
2. The thermal power unit boiler combustion optimization control system of claim 1, wherein the combustion exhaust gas collection assembly comprises: a guide post and a first drive assembly;
the pipe wall of the boiler waste gas pipe is provided with a collecting port, the edge of the collecting port is provided with a guide flange, the guide flange continuously extends along the circumferential direction of the collecting port to form a ring shape, and the guide flange extends outwards along the opening direction of the collecting port;
the guide post is accommodated in the guide flange and is matched with the guide flange and the collection port; along the opening direction of the collection port, the guide post is slidably matched with the guide flange and driven by the first driving component, and the guide post and the guide flange are in sliding sealing;
the guide post is provided with a radial hole and an axial hole, and the radial hole is positioned at one end of the axial hole close to the boiler waste gas pipe and communicated with the axial hole;
the guide column has a first working state and a second working state; when the guide post is in the first working state, the front end of the guide post is received in the guide flange, and the radial hole is closed by the guide flange; when the guide column is in the second working state, the front end of the guide column penetrates into the boiler waste gas pipe through the collecting opening, and the radial hole is located in the boiler waste gas pipe and communicated with the boiler waste gas pipe.
3. The thermal power generating unit boiler combustion optimization control system as claimed in claim 2, wherein an inner cavity is provided at an end of the guide post away from the boiler exhaust gas pipe, and the axial hole is communicated with the inner cavity;
a first opening and a second opening are formed in one end, close to the axial hole, of the inner cavity, the first opening penetrates through the guide post upwards from the inner wall of the inner cavity along the radial direction of the guide post, and the second opening penetrates through the guide post downwards from the inner wall of the inner cavity along the radial direction of the guide post; the cross sections of the first opening and the second opening are rectangular, a gap is reserved between the edge of the first opening and the end wall, close to the axial hole, of the inner cavity along the axial direction of the guide post, the edge of the second opening is arranged corresponding to the end wall, close to the axial hole, of the inner cavity, and the inner wall, close to the axial hole, of one side of the second opening is arranged corresponding to the end wall, close to the axial hole, of the inner cavity;
the inner cavity is also provided with a pushing piece, the pushing piece is arranged along the axial direction of the guide post, and the pushing piece is matched with the guide post in a sliding way and driven by a second driver;
the combustion waste gas collecting assembly also comprises a waste gas collecting pipe, and the waste gas collecting pipe is provided with a collecting hole for collecting combustion waste gas; the waste gas collecting pipe enters the inner cavity through the first opening and is pushed to one end of the inner cavity close to the axial hole by the pushing piece so as to enable the collecting hole to be communicated with the axial hole, and combustion waste gas is collected; and when the pushing piece is separated from the exhaust collecting pipe, the exhaust collecting pipe leaves the inner cavity through the second opening.
4. The thermal power generating unit boiler combustion optimization control system according to claim 3, wherein the exhaust gas collection pipe comprises an outer pipe body, an end cap and a corrugated expansion pipe;
the collecting hole is formed in one end of the outer tube body, and the other end of the outer tube body is of an open structure; the corrugated expansion pipe is arranged in the outer pipe body, one end of the corrugated expansion pipe covers the collecting hole, the other end of the corrugated expansion pipe is connected with the end cap, and the end cap seals the corrugated expansion pipe;
the inner cavity is also internally provided with a pulling piece, and the pulling piece can move relative to the guide post along the axial direction of the guide post and is driven by a third driver;
after the waste gas collecting pipe is pushed to one end, close to the axial hole, of the inner cavity by the pushing piece, the pulling piece pulls the end cap to move towards one end far away from the axial hole, and therefore collection of combustion waste gas is achieved.
5. The thermal power generating unit boiler combustion optimizing control system as claimed in claim 4, wherein the pulling member is a vacuum tube, and one end of the pulling member near the axial hole is trumpet-shaped; and a rubber column matched with the pulling piece is arranged on one side, away from the axial hole, of the end cap.
6. The thermal power generating unit boiler combustion optimization control system according to claim 4, wherein an elastic rubber layer is arranged on the inner wall of the collecting hole; a pull rope is fixedly connected to one side, close to the collecting hole, of the end cap, the pull rope is made of metal, the other end of the pull rope extends to the outside of the outer tube body through the collecting hole, the part, located outside the outer tube body, of the pull rope is coiled in a spiral shape, and the tail end of the pull rope is fixedly connected with a ball body;
the inner wall of the inner cavity is fixedly connected with a stop block, the stop block is arranged close to the axial hole, and the outer wall of the outer tube body can be attached to the inner wall of the inner cavity; the inner wall of one side of the second opening close to the axial hole and the side wall of one side of the stop block far away from the axial hole are positioned on the same plane;
the waste gas collecting pipe is pushed by the pushing piece to abut against the stop block, the pulling piece pulls the end cap to move towards one end far away from the axial hole so as to collect combustion waste gas, and the ball body is in interference fit in the collecting hole so as to seal the waste gas collecting pipe.
7. The thermal power generating unit boiler combustion optimization control system according to claim 6, wherein the cross section of the inner cavity is circular, and the inner wall of the inner cavity is subjected to smoothing treatment.
8. The thermal power generating unit boiler combustion optimization control system according to claim 6, wherein a bar-shaped sliding groove is further formed in the inner cavity, the bar-shaped sliding groove is formed by recessing the inner wall of the inner cavity, the bar-shaped sliding groove is located on one side where the second opening is located, the bar-shaped sliding groove is located on one side, away from the axial hole, of the second opening, and the bar-shaped sliding groove penetrates through the inner wall of the second opening;
a sliding rod is slidably accommodated in the strip-shaped sliding groove, is matched with the strip-shaped sliding groove and is driven by a fourth driver; before the waste gas collecting pipe is placed into the inner cavity, the sliding rod is driven to be abutted against one side, close to the axial hole, of the second opening; before the exhaust gas collecting pipe is sent out from the second opening, the sliding rod is retracted into the strip-shaped sliding groove.
9. The thermal power generating unit boiler combustion optimization control system of claim 8, wherein the collection hole and the axial hole are coaxially disposed when the exhaust gas collection pipe is located within the inner chamber.
10. The thermal power generating unit boiler combustion optimization control system according to claim 9, wherein the axial hole is coaxially disposed with the guide post, the inner cavity is coaxially disposed with the guide post, and the collecting hole is coaxially disposed with the outer tube body.
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| US4123333A (en) * | 1976-02-09 | 1978-10-31 | Hartung, Kuhn & Co. Maschinenfabrik Gmbh | Duct equipment for exhausting coke gases |
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| CN114353043B (en) | 2023-05-12 |
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