CN218328124U - System for realizing intermediate parking of non-intermediate-parking pneumatic actuator - Google Patents
System for realizing intermediate parking of non-intermediate-parking pneumatic actuator Download PDFInfo
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- CN218328124U CN218328124U CN202222171657.7U CN202222171657U CN218328124U CN 218328124 U CN218328124 U CN 218328124U CN 202222171657 U CN202222171657 U CN 202222171657U CN 218328124 U CN218328124 U CN 218328124U
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Abstract
The utility model discloses a system for realizing intermediate parking of a non-intermediate parking pneumatic actuator, which comprises a primary air duct, a secondary air duct, an adjustable blade transmission rod, a connecting rod, a piston and an air cylinder rod; the system comprises a primary air cylinder, a secondary air cylinder, an adjustable blade transmission rod, a connecting rod and a piston, wherein the primary air cylinder is positioned in the secondary air cylinder, a plurality of inner secondary air blades are arranged between the primary air cylinder and the secondary air cylinder, a plurality of outer secondary air blades are arranged on the outer side of the secondary air cylinder, one end of the adjustable blade transmission rod is connected with the outer secondary air blades, the other end of the adjustable blade transmission rod is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the piston, wherein the piston is sleeved on a cylinder rod, a plurality of annular clamping sleeves are arranged between the top of the cylinder rod and the piston, and the system can realize the middle-stop of a non-middle-stop pneumatic actuating mechanism.
Description
Technical Field
The utility model belongs to power station pulverized coal boiler cyclone burner field relates to a system that parks in the middle of no pause pneumatic actuator realizes.
Background
For a pulverized coal boiler of a power station, a rotational flow combustor is widely applied, and the main structure of the rotational flow combustor is a primary air duct, an inner secondary air blade and an outer secondary air blade. Generally speaking, the angle of the outer secondary air blade can be adjusted to realize the change of the outer secondary air quantity and the swirl strength, when the outer secondary air quantity is maximum, the swirl strength is weakest, when the outer secondary air quantity is minimum, the swirl strength is strongest, and by reasonably adjusting the angle of the outer secondary air blade, more ideal outer secondary air quantity and swirl strength can be obtained, so that the pulverized coal combustion is improved and strengthened.
However, in many power plants using the cyclone burner, the pneumatic actuator of the outer secondary air vane is a non-stop pneumatic actuator, i.e. the piston of the pneumatic actuator can only stop at the bottommost end and the topmost end of the cylinder rod during the movement, and the piston cannot stop at the middle position, which results in that the outer secondary air vane can only stop at the fully-closed and fully-open positions, so that the outer secondary air vane always keeps fully-open, i.e. the state that the outer secondary air volume is maximum and the cyclone strength is weakest, during the actual operation of the boiler. For high-quality bituminous coal with high volatile components, the high-quality bituminous coal is easy to burn and burn out, and the influence on the combustion effect is not great, but if the low-volatile-component poor bituminous coal or lean coal and anthracite are burnt, the disturbance of a gas-powder mixture is not enough and the combustion is weakened because the rotational flow strength is at the weakest position, so that the coal powder is not easy to burn out, and the coal powder burning effect is poor; and for the same-layer combustor, reasonable air distribution of external secondary air cannot be realized, a series of problems such as oxygen content deviation of a boiler, steam temperature deviation or overtemperature of a metal wall of a heating surface and the like can be caused, and the economical efficiency and safety of a unit can be greatly influenced.
Because the price difference between the non-stop pneumatic actuator and the stop-capable pneumatic actuator is large, if the non-stop pneumatic actuator connected with the outer secondary air blade of the cyclone burner is completely replaced by the stop-capable pneumatic actuator, the cost required to be increased for dozens of burners of a boiler is quite high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a system that parks in the middle of no pause pneumatic actuator realizes, this system can realize that no pause pneumatic actuator parks in the middle.
In order to achieve the above purpose, the system for realizing the middle parking of the non-middle-parking pneumatic actuator of the utility model comprises a primary air duct, a secondary air duct, an adjustable blade transmission rod, a connecting rod, a piston and a cylinder rod;
the secondary air duct comprises a primary air duct body, a secondary air duct body, a plurality of inner secondary air blades, a plurality of outer secondary air blades, an adjustable blade transmission rod, a connecting rod and a piston, wherein the primary air duct body is located in the secondary air duct body, the plurality of inner secondary air blades are arranged between the primary air duct body and the secondary air duct body, the outer side of the secondary air duct body is provided with the plurality of outer secondary air blades, one end of the adjustable blade transmission rod is connected with the outer secondary air blades, the other end of the adjustable blade transmission rod is connected with one end of the connecting rod, the other end of the connecting rod is connected with the piston, the piston is sleeved on the cylinder rod, and a plurality of annular clamping sleeves are arranged between the top of the cylinder rod and the piston.
The inner secondary air blades are distributed in sequence along the circumferential direction.
The outer secondary air blades are distributed in sequence along the circumferential direction.
The number of annular ferrules is 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
The annular clamping sleeve is formed by buckling two movable semi-rings.
The thickness of each annular cutting sleeve is the same.
The annular clamping sleeve is sleeved on the cylinder rod.
The number of the annular clamping sleeves between the top of the cylinder rod and the piston is determined according to the required external secondary air quantity.
The utility model discloses following beneficial effect has:
the method of parking in the middle of no pause pneumatic actuator realizes when concrete operation, according to the figure of the cyclic annular cutting ferrule of required outer secondary air volume determination, install the cyclic annular cutting ferrule of required figure between the top of cylinder pole and piston to adjust the angle of outer overgrate air blade, realize the regulation of required outer secondary air volume and whirl intensity, realize then that no pause pneumatic actuator parks in the middle, simple structure, convenient operation, the practicality is extremely strong.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the piston 6 at the top of the cylinder rod 7;
FIG. 3 is a schematic view of the piston 6 at the bottom of the cylinder rod 7;
FIG. 4a is a schematic view of a No. 1 burner pneumatic actuator;
FIG. 4b is a schematic view of the pneumatic actuator of burner number 2;
FIG. 4c is a schematic view of the pneumatic actuator of burner # 3;
FIG. 4d is a schematic view of the pneumatic actuator of burner number 4;
FIG. 4e is a schematic view of the pneumatic actuator of burner No. 5;
fig. 4f is a schematic view of the pneumatic actuator of burner No. 6.
Wherein, 1 is a primary air duct, 2 is an inner secondary air blade, 3 is an outer secondary air blade, 4 is an adjustable blade transmission rod, 5 is a connecting rod, 6 is a piston, 7 is a cylinder rod, and 8 is an annular clamping sleeve.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of the various regions, layers and their relative sizes, positional relationships are shown in the drawings as examples only, and in practice deviations due to manufacturing tolerances or technical limitations are possible, and a person skilled in the art may additionally design regions/layers with different shapes, sizes, relative positions, according to the actual needs.
Referring to fig. 1, fig. 2 and fig. 3, the system for realizing the middle parking of the non-stop pneumatic actuator of the present invention comprises a primary air duct 1, an inner secondary air blade 2, an outer secondary air blade 3, an adjustable blade transmission rod 4, a connecting rod 5, a piston 6, a cylinder rod 7 and a plurality of annular clamping sleeves 8;
wherein, a dryer 1 is located the secondary dryer, and be provided with a plurality of interior overgrate air blades 2 between dryer 1 and the secondary dryer, the outside of secondary dryer is provided with a plurality of outer overgrate air blades 3, the one end of adjustable blade transfer line 4 is connected with outer overgrate air blades 3, the other end of adjustable blade transfer line 4 is connected with the one end of connecting rod 5, the other end of connecting rod 5 is connected with piston 6, wherein, each interior overgrate air blades 2 distributes along circumference in proper order, each outer overgrate air blades 3 distributes along circumference in proper order, wherein, piston 6 cup joints on cylinder pole 7, and be provided with a plurality of cyclic annular cutting ferrule 8 between the top of cylinder pole 7 and piston 6.
The utility model discloses a concrete working process does:
the primary air duct 1, the secondary air duct, the inner secondary air blade 2 and the outer secondary air blade 3 form a cyclone burner, and the outer secondary air blade 3 is connected with an adjustable blade transmission rod 4; the connecting rod 5, the piston 6 and the cylinder rod 7 form a pneumatic actuating mechanism, and the piston 6 is pushed by the cylinder rod 7 to drive the connecting rod 5 to act, so that the adjustable blade transmission rod 4 is pulled, and the adjustment of the external secondary air blade 3 is realized.
Because the pneumatic actuator is a non-stop pneumatic actuator, the piston 6 of the pneumatic actuator can only stop at the full-open position, as shown in fig. 2, or stop at the full-close position, as shown in fig. 3, the stroke displacement of the piston 6 when the pneumatic actuator is at the full-open position and the full-close position is measured, the stroke displacement is divided into ten parts, 10 annular clamping sleeves 8 are manufactured corresponding to each pneumatic actuator, the height of each annular clamping sleeve 8 is one part of the ten parts, and each annular clamping sleeve 8 consists of two movable half rings and can be clamped on the cylinder rod 7, so that the clamping and the taking-off are easy. When the outer secondary air blade 3 of a certain swirl burner needs to be adjusted, the pneumatic actuating mechanism of the burner is completely closed, the annular clamping sleeve 8 is clamped on the cylinder rod 7, when the outer secondary air volume needs to be adjusted to 80%, the two annular clamping sleeves 8 are clamped on the cylinder rod 7, then the pneumatic actuating mechanism is completely opened, the two annular clamping sleeves 8 are just propped against the piston 6, the effect of a limiter is achieved, the adjustment of the outer secondary air volume of 80% and the swirl strength of 20% is achieved, the number of the annular clamping sleeves 8 clamped on the cylinder rod 7 is 0 to 10, the adjustment of the outer secondary air volume of 100% to 0% and the swirl strength of 0% to 100% is achieved. And for a plurality of combustors corresponding to the same coal mill, a reasonable air distribution mode for the combustors on the same layer is realized according to the difference of the number of the annular clamping sleeves 8 on the cylinder rod 7 of the pneumatic actuating mechanism corresponding to each combustor, for example, the same coal mill has 6 combustors, and as shown in fig. 4a to 4f, the annular clamping sleeves 8 on the cylinder rods 7 of the combustors 1 to 6 are respectively clamped by 2, 4, 6, 4 and 2, so that typical "bowl-shaped" air distribution with external secondary air volume of 80%, 60%, 40%, 60%, 80% and swirl strength of 20%, 40%, 60%, 40% and 20% can be formed.
The above description is provided for the purpose of describing the present invention in more detail with reference to the specific preferred embodiments, and it should not be construed that the present invention is limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in various forms without departing from the spirit and scope of the present invention.
Claims (8)
1. A system for realizing intermediate parking of a non-intermediate-parking pneumatic actuator is characterized by comprising a primary air duct (1), a secondary air duct, an adjustable blade transmission rod (4), a connecting rod (5), a piston (6) and an air cylinder rod (7);
the air dryer comprises a primary air duct (1), a plurality of inner secondary air blades (2) arranged between the primary air duct (1) and a secondary air duct, a plurality of outer secondary air blades (3) arranged on the outer side of the secondary air duct, an adjustable blade transmission rod (4) with one end connected with the outer secondary air blades (3), an adjustable blade transmission rod (4) with the other end connected with one end of a connecting rod (5), and a piston (6) connected with the other end of the connecting rod (5), wherein the piston (6) is sleeved on an air cylinder rod (7), and a plurality of annular clamping sleeves (8) are arranged between the top of the air cylinder rod (7) and the piston (6).
2. The system for realizing intermediate parking of the non-stop pneumatic actuator according to claim 1, wherein each inner secondary air blade (2) is distributed in turn along the circumferential direction.
3. The system for realizing the intermediate parking of the non-intermediate-parking pneumatic actuator according to claim 1, wherein each outer secondary air blade (3) is distributed in sequence along the circumferential direction.
4. The system for realizing the intermediate parking of the non-intermediate parking pneumatic actuator according to claim 1, wherein the number of the annular clamping sleeves (8) is 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
5. The system for realizing the intermediate parking of the non-intermediate-parking pneumatic actuator as claimed in claim 1, wherein the annular clamping sleeve (8) is formed by buckling two movable half rings.
6. The system for realizing intermediate parking of a centerless pneumatic actuator of claim 1 wherein the thickness of each annular ferrule (8) is the same.
7. The system for realizing the intermediate parking of the non-central parking pneumatic actuator according to claim 1, characterized in that an annular clamping sleeve (8) is sleeved on the cylinder rod (7).
8. The system for realizing the intermediate parking of the non-stop pneumatic actuator according to claim 1, wherein the number of the annular clamp sleeves (8) between the top of the cylinder rod (7) and the piston (6) is determined according to the required external secondary air volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222171657.7U CN218328124U (en) | 2022-08-17 | 2022-08-17 | System for realizing intermediate parking of non-intermediate-parking pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222171657.7U CN218328124U (en) | 2022-08-17 | 2022-08-17 | System for realizing intermediate parking of non-intermediate-parking pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218328124U true CN218328124U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222171657.7U Active CN218328124U (en) | 2022-08-17 | 2022-08-17 | System for realizing intermediate parking of non-intermediate-parking pneumatic actuator |
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| Country | Link |
|---|---|
| CN (1) | CN218328124U (en) |
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2022
- 2022-08-17 CN CN202222171657.7U patent/CN218328124U/en active Active
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