Decoking device for coal-fired boiler

A technology of coal-fired boilers and translational devices, which is applied in the direction of lighting and heating equipment, etc., can solve the problems of coking machines that are difficult to swing and hit coke in a large range, the effect of coke hitting is not ideal, and the linkage control and coordination are difficult, so as to improve the coke hit and remove Focus effect, improved operational flexibility, improved effectiveness and reliability

Active Publication Date: 2012-08-22
江苏广通电力设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to coordinate the two in actual operation, and it is also difficult to coordinate the linkage control of each part. In particular, in this coking method, the coking power is at the rear end of the guide rail far away from the coking bit, and the exciting force generated is transmitted through the guide rail. The actual transmission to the coking bit has been greatly weakened, and the actual coking effect is not ideal
Secondly, this coking machine can only coke in a straight line, that is, it can only hit coke on the furnace wall opposite the coke removal hole. Due to the limited number of coke removal holes on the boiler wall, it is impossible to open many holes without restriction, and the area of ​​the coke removal holes is relatively large. Smaller, it is difficult for the coke machine to achieve a wide range of swing and focus, so there is a dead angle of coke, and it is difficult to remove all coke

Method used

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  • Decoking device for coal-fired boiler
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  • Decoking device for coal-fired boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: see figure 1 , the decoking device for a coal-fired boiler of the present invention comprises a support vertical bar 1, the top of which is biased by a movable hinge support 3 of a lug to support a coking cross arm 4, and a slidable counterweight is arranged at the rear end of the coking cross arm 4 (in the figure Not shown, it can also be an adjustable diagonal tie rod), the front end is connected to the connecting flange 5, and the assembly connection is connected with the coking drill bit 6.2 of the valve-controlled cylinder 6.1 to form an impact vibration coking head 6. Among them, there is a plane rotating bearing 2 and a movable hinge support 3 on the top of the support vertical rod, and the two work together to make the coke hitting cross arm 4 move arbitrarily 360 degrees according to the support vertical rod, which is convenient for aligning with the coking hole on the furnace wall , so that the focus block can be fine-tuned when focusing. Of cou...

Embodiment 2

[0044] Example 2: see figure 2 -4. As mentioned above, there are spring dampers 8 and 9 respectively between the upper part of the supporting vertical bar (below the hinge fulcrum), and between the focusing cross arm and the shock and vibration focusing head 6 (other damping devices can also be used). Shock vibration acts as a shock absorber. The connecting flange 5 adopts a quick-installed flange that only needs one screw connection, and the quick-installed flange has an adjustable arc-shaped groove 5.4 on the upper part of one flange 5.1 (which can realize the angle rotation of the front end, and the other flange also has this arc-shaped groove, the rotation angle is larger), and the lower part has an arc-shaped hook 5.3 protruding from the plane. This structure only needs to insert another piece of connecting flange into the arc-shaped hook, and tighten the screws in the upper arc-shaped groove to achieve the connection. , can realize the fast connection of two flanges. ...

Embodiment 3

[0046] Embodiment 3: see Figure 5 , 6 , as mentioned above, wherein the worm gear 12 and the worm screw 11 assembly are arranged between the hinge of the focusing cross arm 4 and the support vertical rod 1, and the pitch angle of the focusing cross arm can be automatically adjusted by the rotation of the worm screw. Wherein the worm wheel 12 is driven by the assembly of the spline shaft 13 and the shaft sleeve 14, and realizes the warping of the focusing cross arm through the separable / combined concave-cam groups 15.1 and 15.2 respectively arranged on the spline shaft sleeve and the focusing cross arm rotating shaft 16 Kinematic coupling and disengagement. The worm drive can be driven by rotary power such as a geared motor, a rotary oil cylinder, and a rotary cylinder. This structure enables the coupling to drive the focusing arm to move up and down, and the focusing arm can freely move up and down after separation. That is, the transmission is disengaged after the coking ...

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Abstract

The invention relates to improvement of a decoking device for a coal-fired boiler. The decoking device is characterized in that an impact vibration coke top hitting head is composed of a valve control air cylinder or an air pick or a crank arm/connecting rod and a direct driving coke hitting drill bit and arranged at the front end of a coke hitting cross arm. Not only a power device can generate vibration force and impacting force simultaneously and exciting force is strong and powerful, but also the impact vibration coke hitting head can enter a boiler body directly and vibrates and impacts coke blocks directly at a close range. The exciting force generated through the close range of the coke blocks enables coke hitting speed to be fast and powerful, coke hitting effectiveness and reliability are greatly improved, coke hitting and removing effects are remarkably improved, and coke hitting can be operated by a single person or two people.

Description

technical field [0001] The invention is an improvement to the decoking device for the coal-fired boiler, and in particular relates to a decoking device for the coal-fired boiler with simple structure, simple and flexible operation and reliable decoking action. Background technique [0002] Coal-fired boilers, especially industrial large-scale coal-fired boilers, inevitably cause coking on the furnace wall during the combustion process, especially when low-quality coal and high-sulfur coal are used, and coking is more serious. Coking on the inner wall of the boiler will endanger the safe operation of the boiler if it is not removed. Although people add various anti-coking agents to coal, it is still impossible to completely avoid coking. The furnace wall surface is coked, and the coke block has strong adhesion to the furnace wall surface. Usually, it cannot fall off by its own gravity. It must be removed by external force, and it needs to be punched out with a large external...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J1/06
Inventor 张伟东江传东王晰阳肖鹰
Owner 江苏广通电力设备有限公司
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