Slag inlet pipe structure of slag cooler

Abstract

The utility model provides a slag inlet pipe structure of a slag cooler, which comprises a slag inlet pipe, one end of the slag inlet pipe is connected with a slag outlet of a boiler, the other end of the slag inlet pipe is connected with a roller slag cooler, and the slag inlet pipe is connected with the roller slag cooler through a corrugated compensator; the slag inlet pipe is connected with the boiler body in a sleeved mode, a flexible pipe clamp is connected to the slag inlet pipe in a sleeved mode, the side face of the flexible pipe clamp and a truss are welded together, the other end of the truss is connected with the boiler body, and a boiler slag discharging opening is formed in the top of the boiler body. The micro displacement of the boiler body and the slag inlet pipe can be absorbed through the micro deformation of the spring. The defect that a rigid pipe clamp cannot absorb relative expansion displacement is overcome.

Description

Technical Field

[0001] The utility model belongs to the field of fluidized bed boiler slag discharging system equipment, and particularly relates to a slag cooler feed pipe structure. Background Art

[0002] As a boiler auxiliary, the function of the slag cooler is to cool the slag after combustion in the boiler, so that it can be recycled, which is beneficial to environmental protection.

[0003] At present, drum slag coolers are generally used for slag coolers. Cooling water flows through the interlayer of the cylinder or the cooling tube group. The cooling water and the boiler bottom slag exchange heat indirectly in the rolling cylinder to cool the bottom slag. The cooled ash slag is conveyed to the outlet of the slag cooler through the slag guiding plate in the cylinder.

[0004] The upper end of the slag cooler feed pipe is connected to the boiler slag discharge port. Due to the thermal expansion of the boiler slag discharge port, a corrugated compensator is installed on the slag cooler feed pipe. The deformation of the corrugated compensator is relied on to absorb the vertical and horizontal displacements of the slag cooler feed pipe.

[0005] When absorbing the horizontal displacement, the corrugated compensator will give a horizontal reaction force to the feed pipe. This reaction force will generate a moment acting on the root of the feed pipe. According to the formula: moment = force × force arm, if the length of the feed pipe is long (i.e., the force arm is long), this moment becomes very large, which will tear the weld at the root of the feed pipe, resulting in the fracture of the feed pipe and the overflow of furnace slag, and finally leading to the occurrence of boiler shutdown and even casualties.

[0006] The method to offset the reaction force is to increase the pipe clamp fixation. However, the traditional rigid pipe clamp cannot absorb the expansion displacement of the feed pipe. Content of the Utility Model

[0007] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a slag cooler feed pipe structure to solve the problems raised in the above background art.

[0008] The utility model is realized through the following technical solutions: a slag cooler feed pipe structure, comprising: a feed pipe, one end of the feed pipe is connected to the boiler slag discharge port, the other end of the feed pipe is connected to the drum slag cooler, and the feed pipe is connected to the drum slag cooler through a corrugated compensator;

[0009] A flexible pipe clamp is sleeved on the feed pipe. The side surface of the flexible pipe clamp is welded to the truss, and the other end of the truss is connected to the boiler body. The top of the boiler body has a boiler slag discharge port.

[0010] As a preferred embodiment, the flexible pipe clamp includes an outer ring. The bottom of the slag inlet pipe penetrates through the outer ring until it is connected to the corrugated compensator. A sleeve is arranged on the outer ring, a spring is arranged inside the sleeve, and a bolt group is arranged in a penetrating manner on one side of the sleeve.

[0011] As a preferred embodiment, a through hole is opened at one end of the sleeve, an internal thread is rolled in the through hole, the bolt group is composed of a bolt rod and a nut. The bolt rod penetrates through the through hole until it reaches the inside of the sleeve, and the nut is screwed on the bolt rod and contacts the outer surface of the sleeve.

[0012] As a preferred embodiment, a pressing plate that can move left and right is arranged inside the sleeve. The bolt rod extends into the sleeve and is connected to one end of the pressing plate. The other end of the pressing plate is connected to one end of the spring, and the end of the spring far from the pressing plate is connected to the outer surface of the slag inlet pipe.

[0013] As a preferred embodiment, the sleeve, the bolt group, the pressing plate and the spring form a compensation unit. At least four groups of the compensation units are arranged symmetrically on the outer ring for connecting the outer ring and the slag inlet pipe.

[0014] After adopting the above technical solution, the beneficial effect of the present utility model is that: because the spring has the characteristic of absorbing displacement. The slight displacement between the boiler body and the slag inlet pipe can be absorbed by the slight deformation of the spring itself. It solves the drawback that the rigid pipe clamp cannot absorb the relative expansion displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is an installation schematic diagram of the slag inlet pipe structure of a slag cooler of the present utility model.

[0017] Figure 2 It is an A-A schematic diagram of the slag inlet pipe structure of a slag cooler of the present utility model.

[0018] Figure 3 It is a side view of the slag inlet pipe structure of a slag cooler of the present utility model.

[0019] In the figure, 100 - drum slag cooler;

[0020] 200 - corrugated compensator;

[0021] 300 - Flexible pipe clamp, 310 - Outer ring, 320 - Sleeve, 330 - Bolt group, 340 - Pressure plate, 350 - Spring;

[0022] 400 - Truss;

[0023] 500 - Slag inlet pipe;

[0024] 600 - Boiler slag discharge port. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1 to 3 , the present invention provides a technical solution: a structure of a slag inlet pipe 500 of a slag cooler, including: a slag inlet pipe 500, one end of the slag inlet pipe 500 is connected to a boiler slag discharge port 600, the other end of the slag inlet pipe 500 is connected to a drum slag cooler 100, and the slag inlet pipe 500 is connected to the drum slag cooler 100 through a corrugated compensator 200;

[0027] A flexible pipe clamp 300 is sleeved on the slag inlet pipe 500, the side surface of the flexible pipe clamp 300 is welded to a truss 400, the other end of the truss 400 is connected to a boiler body, and the top of the boiler body has a boiler slag discharge port 600.

[0028] As an embodiment of the present invention, the flexible pipe clamp 300 includes an outer ring 310, the bottom of the slag inlet pipe 500 penetrates through the outer ring 310 until it is connected to the corrugated compensator 200, a sleeve 320 is arranged on the outer ring 310, a spring 350 is arranged inside the sleeve 320, and a bolt group 330 is arranged through one side of the sleeve 320.

[0029] A through hole is opened at one end of the sleeve 320, an internal thread is rolled in the through hole, the bolt group 330 is composed of a bolt rod and a nut, the bolt rod penetrates through the through hole until it reaches the inside of the sleeve 320, and the nut is screwed on the bolt rod and contacts the outer surface of the sleeve 320.

[0030] A pressure plate 340 that can move left and right is arranged inside the sleeve 320, the bolt rod extends into the inside of the sleeve 320 and is connected to one end of the pressure plate 340, the other end of the pressure plate 340 is connected to one end of the spring 350, and the end of the spring 350 away from the pressure plate 340 is connected to the outer surface of the slag inlet pipe 500.

[0031] The sleeve 320, the bolt group 330, the pressing plate 340 and the spring 350 form a compensation unit. At least four groups of the compensation units are provided and are symmetrically arranged on the outer ring 310 for connecting the outer ring 310 and the slag inlet pipe 500.

[0032] By adjusting the bolt group 330 at the end of the sleeve 320, the position of the pressing plate 340 in the sleeve 320 is controlled, thereby controlling the compression amount of the spring 350.

[0033] One end of the spring 350 acts on the slag inlet pipe 500, and the acting force of the spring 350 on the slag inlet pipe 500 can be controlled by the compression amount of the spring 350.

[0034] Because the spring 350 has the characteristic of absorbing displacement. The slight displacement between the boiler body and the slag inlet pipe 500 can be absorbed by the slight deformation of the spring 350 itself. The drawback that the rigid pipe clamp cannot absorb the relative expansion displacement is solved. The device can also apply an elastic force in a certain direction of the slag inlet pipe 500 by adjusting the compression amount of the spring 350 in the sleeve 320, and this elastic force can offset or reduce the horizontal acting force of the corrugated compensator 200 on the slag inlet pipe 500, thereby protecting the weld at the root of the slag inlet pipe 500.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slag cooler slag inlet pipe structure, comprising: A slag inlet pipe, one end of which is connected to the boiler slag discharge port, and the other end of which is connected to the drum slag cooler, characterized in that the slag inlet pipe is connected to the drum slag cooler through a corrugated compensator; A flexible pipe clamp is sleeved on the slag inlet pipe, and the side of the flexible pipe clamp is welded to the truss. The other end of the truss is connected to the boiler body, and the top of the boiler body is provided with a boiler slag discharge port.

2. A slag cooler slag inlet pipe structure as claimed in claim 1, characterized in that: The flexible pipe clamp includes an outer ring, the bottom of the slag feeding pipe penetrates the outer ring until it is connected to the corrugated compensator, a sleeve is arranged on the outer ring, a spring is arranged in the sleeve, and a bolt group is arranged through one side of the sleeve.

3. A slag cooler slag inlet pipe structure as claimed in claim 2, characterized in that: A through hole is formed at one end of the sleeve, and an internal thread is rolled in the through hole. The bolt group consists of a bolt rod and a nut. The bolt rod passes through the through hole to the inside of the sleeve. The nut is screwed on the bolt rod and contacts the outer surface of the sleeve.

4. A slag cooler slag inlet pipe structure as claimed in claim 3, characterized in that: A pressure plate movable left and right is arranged inside the sleeve, the bolt rod extends into the sleeve and is connected to one end of the pressure plate, the other end of the pressure plate is connected to one end of a spring, and the end of the spring away from the pressure plate is connected to the outer surface of the slag inlet pipe.

5. A slag cooler slag inlet pipe structure as claimed in claim 4, characterized in that: The sleeve, bolt group, pressure plate and spring constitute a compensation unit. At least four groups of the compensation units are provided. The four groups of the compensation units are symmetrically arranged on the outer ring and are used to connect the outer ring and the slag inlet pipe.

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