CN216591782U

CN216591782U - Novel blanking pipe

Info

Publication number: CN216591782U
Application number: CN202122954403.8U
Authority: CN
Inventors: 王国杰; 侯素克; 李宁; 马俊; 张亚东
Original assignee: Wuhan Xinfeng Cement Co ltd
Current assignee: Wuhan Xinfeng Cement Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-24
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses the technical field of preheater equipment, which specifically comprises the following steps: the novel blanking pipe comprises a smoke chamber, wherein the outer wall of the right side end of the smoke chamber is fixedly communicated with a blanking pipe assembly, the blanking pipe assembly comprises a first blanking pipe, a second blanking pipe, a third blanking pipe and a fourth blanking pipe, and the first blanking pipe, the second blanking pipe, the third blanking pipe and the fourth blanking pipe are identical in quality.

Description

Novel blanking pipe

Technical Field

The utility model relates to the technical field of preheater equipment, in particular to a novel blanking pipe.

Background

The preheater is a heating surface which preheats air before entering the boiler to a certain temperature by using flue gas in a flue at the tail part of the boiler through internal radiating fins. The method is used for improving the heat exchange performance of the boiler and reducing energy consumption.

The air preheating is carried out to the smoke chamber through unloading pipe with outside air to present preheater mostly, and current unloading pipe is after long-time the use, the condition of skinning often appears because the corruption in its inner wall, and increase long when the unloading pipe is used, the quantity that the skinning produced is just more just also more, produce to certain quantity after the skinning, it can block up the unloading pipe, so not only can influence the preheating of preheater to the air, still can cause the influence to kiln output, and the workman clears up the unloading pipe skinning and not only wastes time and energy, still can cause the influence to workman's life safety.

Therefore, it is necessary to develop a new blanking pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel blanking pipe, which aims to solve the problems that most of the existing preheaters in the background art convey external air into a smoke chamber through the blanking pipe for air preheating, the inner wall of the existing blanking pipe is often subjected to skinning due to corrosion after the existing blanking pipe is used for a long time, the number of the skinning is increased along with the increase of the service life of the blanking pipe, and the blanking pipe is blocked after the skinning is generated to a certain number.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel blanking pipe, includes the smoke chamber, the fixed intercommunication of smoke chamber right side end outer wall has the unloading pipe subassembly, the unloading pipe subassembly includes first unloading pipe, second unloading pipe, third unloading pipe and fourth unloading pipe, first unloading pipe, second unloading pipe, third unloading pipe and fourth unloading pipe matter are constituteed equally the same, first unloading pipe bottom and the fixed intercommunication of second unloading pipe top, second unloading pipe bottom and the fixed intercommunication of third unloading pipe top, third unloading pipe bottom and the fixed intercommunication of fourth unloading pipe top, fourth unloading pipe bottom and the fixed intercommunication of smoke chamber right side end inner wall.

Preferably, the inner wall of the rear end of the first discharging pipe is provided with five overhauling ports, and the bottom of the inner wall of the right end of the first discharging pipe is provided with a pressure measuring port.

Preferably, the outer wall of the bottom end of the first blanking pipe is fixedly communicated with an expansion joint a, the bottom end part of the expansion joint a is fixedly communicated with the top end part of the second blanking pipe, the upper end part of the inner side end wall of the second blanking pipe is fixedly communicated with a flap valve, and the flap valve is matched with the second blanking pipe for use.

Preferably, the lower part of the inner wall of the right side end of the second blanking tube is provided with a gas blast hole, and the gas blast hole is arranged below the flap valve.

Preferably, an included angle formed between the bottom end part of the second blanking pipe and the top end part of the third blanking pipe is 30 degrees, the bottom end part of the third blanking pipe is communicated with an expansion joint b, and the bottom end part of the expansion joint b is fixedly communicated with the top end part of the fourth blanking pipe.

Preferably, the first blanking pipe comprises a shell, a casting material layer is arranged on the end wall of the inner side of the shell, and a microcrystal lining layer is arranged on the end wall of the inner side of the casting material layer.

Preferably, a heat preservation layer is arranged between the shell and the casting material layer, the outer side end wall of the heat preservation layer is fixedly connected with the inner side end wall of the shell, the inner side end wall of the heat preservation layer is fixedly connected with the outer side end wall of the casting material layer, and a hollow layer is arranged between the outer side end wall of the microcrystal lining layer and the inner side end wall of the casting material layer.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model has obvious anti-skinning effect, good high temperature resistance, good thermal stability, good wear resistance and acid and alkali resistance, can effectively prevent the blanking pipe from being blocked due to skinning generated in the blanking pipe, and also technically improves the position of the blanking pipe extending into a smoke chamber, thereby achieving the purpose of improving the heat exchange efficiency, improving the kiln entering decomposition rate and lightening the load in the kiln.

Drawings

FIG. 1 is a schematic view of a partial cross-sectional structure in the front view direction of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic view of a material structure of a first blanking tube in a top view direction according to the present invention;

fig. 4 is a schematic perspective view of the expansion joint a of the present invention.

In the figure: 100. a first blanking pipe; 101. a housing; 102. a heat-insulating layer; 103. pouring a material layer; 104. a microcrystalline inner liner layer; 110. an access hole; 120. a pressure measuring port; 130. an expansion joint a; 200. a flap valve; 300. a second blanking pipe; 310. carrying out gas blast hole drilling; 400. a third blanking pipe; 410. an expansion joint b; 500. a smoking chamber; 600. and a fourth blanking pipe.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The utility model provides the following technical scheme: a novel blanking pipe can effectively improve the anti-skinning effect of the inner wall of the blanking pipe in the using process, thereby preventing the blanking pipe from being blocked due to skinning and improving the production efficiency of a furnace kiln, please refer to figures 1-4, which comprise a smoke chamber 500, wherein the smoke chamber 500 is arranged for preheating air conveyed by the blanking pipe assembly, the outer wall of the right side end of the smoke chamber 500 is fixedly communicated with the blanking pipe assembly, the blanking pipe assembly comprises a first blanking pipe 100, a second blanking pipe 300, a third blanking pipe 400 and a fourth blanking pipe 600, the first blanking pipe 100, the second blanking pipe 300, the third blanking pipe 400 and the fourth blanking pipe 600 are all the same in material composition, the bottom end part of the first blanking pipe 100 is fixedly communicated with the top end part of the second blanking pipe 300, the bottom end part of the second blanking pipe 300 is fixedly communicated with the top end part of the third blanking pipe 400, the bottom end part of the third blanking pipe 400 is fixedly communicated with the top end part 600 of the fourth blanking pipe, the bottom end part of the fourth blanking pipe 600 is fixedly communicated with the inner wall of the right side end of the smoke chamber 500;

the inner wall of the rear end of the first blanking pipe 100 is provided with an access hole 110, the access holes 110 are five in number, the access hole 110 is formed to facilitate maintenance personnel to examine and repair the inner side end wall of the first blanking pipe 100, the bottom of the inner wall of the right side end of the first blanking pipe 100 is provided with a pressure measuring hole 120, the pressure measuring hole 120 is formed to facilitate detection of pressure in the first blanking pipe 100 by maintenance personnel, the pressure measuring hole 120 is formed to be a round hole with the diameter of 50CM, the outer wall of the bottom end of the first blanking pipe 100 is fixedly communicated with an expansion joint a130, the bottom end part of the expansion joint a130 is fixedly communicated with the top end part of the second blanking pipe 300, the expansion joint a130 is arranged to relieve stress generated after thermal expansion of the first blanking pipe 100 and the second blanking pipe 300 under high temperature, further, the first blanking pipe 100 and the second blanking pipe 300 are prevented from being damaged, the upper end part of the inner side end wall of the second blanking pipe 300 is fixedly communicated with a flap valve 200, the flap valve 200 is matched with the second feeding pipe 300 for use, the flap valve 200 is arranged to be automatically opened under the condition that the feeding pipe assembly conveys air, and the flap valve mainly utilizes the opening and closing of the upper valve and the lower valve at different time to enable a layer of valve plate in the middle of the device to be in a closed and isolated state all the time so as to prevent air channeling;

the lower part of the inner wall of the right end of the second blanking pipe 300 is provided with an air blast hole 310, the air blast hole 310 is arranged below the flap valve 200, the arranged air blast hole 310 plays a role of dredging the blanking pipe, the included angle formed between the bottom end part of the second blanking pipe 300 and the top end part of the third blanking pipe 400 is 30 degrees, and the included angle is set to be 30 degrees so as to change the angle of the blanking pipe assembly without influencing the air conveying efficiency of the blanking pipe assembly and enable the blanking pipe assembly to be better communicated with the smoke chamber 500, meanwhile, the connection part of the blanking pipe component and the smoke chamber 500 can also move downwards by 50mm due to the 30-degree included angle, therefore, the purpose of improving the heat exchange efficiency is achieved, the decomposition rate in the kiln is improved, the load in the kiln is reduced, the bottom end part of the third blanking pipe 400 is communicated with the expansion joint b410, the bottom end part of the expansion joint b410 is fixedly communicated with the top end part of the fourth blanking pipe 600, and the expansion joint b410 is arranged to have the same structural function as the expansion joint a 130;

the first blanking pipe 100 comprises a shell 101, the shell 101 is arranged to protect the outer wall of the blanking pipe assembly, the shell 101 is specifically a metal outer cover sprayed with anticorrosive paint, a casting material layer 103 is arranged on the inner side end wall of the shell 101, the casting material layer 103 is arranged to play a shaping role, the casting material layer 103 is made of cement, a microcrystal lining layer 104 is arranged on the inner side end wall of the casting material layer 103, the microcrystal lining layer 104 is arranged to play a role in preventing air from forming a crust inside the blanking pipe assembly, the microcrystal lining layer 104 is specifically made of microcrystal ceramic glass and has excellent chemical corrosion resistance, a heat insulation layer 102 is arranged between the shell 101 and the casting material layer 103, the outer side end wall of the heat insulation layer 102 is fixedly connected with the inner side end wall of the shell 101, the inner side end wall of the heat insulation layer 102 is fixedly connected with the outer side end wall of the casting material layer 103, and the heat insulation layer 102 is arranged to play a role in improving the heat insulation performance of the blanking pipe assembly, the heat preservation 102 material that sets up is polyethylene insulation material, is provided with the cavity between the end wall in microcrystal inner liner layer 104 outside and the pouring material layer 103 inboard end wall, and the cavity that sets up also can play thermal-insulated heat retaining effect.

The working principle is as follows: firstly, a worker firstly installs the blanking pipe assembly according to the requirements, then the bottom end part of the blanking pipe assembly is communicated with the inner wall of the right side end of the smoke chamber 500, after the communication is finished, the worker can convey air into the blanking pipe assembly at a constant speed through equipment such as a blower and the like, in the conveying process, the flap valve 200 needs to be opened firstly, and the blanking pipe assembly can convey the air into the smoke chamber 500 continuously and uniformly for preheating treatment;

in the unloading pipe use, the access hole 110 that maintainer accessible was seted up overhauls the unloading intraduct, can detect the intraduct pressure of unloading through the pressure measurement mouth 120 of seting up, and in the unloading pipe subassembly that sets up moreover, can improve the thermal-insulated effect of unloading pipe heat preservation through the heat preservation 102 that sets up and pouring material layer 103, can effectually prevent the unloading pipe jam that the inside generation skinning of unloading leads to through the micrite inner liner 104 that sets up.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A novel blanking pipe, includes smoke chamber (500), its characterized in that: the fixed intercommunication of smoke chamber (500) right side end outer wall has the unloading pipe assembly, the unloading pipe assembly includes first unloading pipe (100), second unloading pipe (300), third unloading pipe (400) and fourth unloading pipe (600), first unloading pipe (100), second unloading pipe (300), third unloading pipe (400) and fourth unloading pipe (600) material are constituteed equally the same, first unloading pipe (100) bottom portion and the fixed intercommunication in second unloading pipe (300) top portion, second unloading pipe (300) bottom portion and the fixed intercommunication in third unloading pipe (400) top portion, third unloading pipe (400) bottom portion and the fixed intercommunication in fourth unloading pipe (600) top portion, fourth unloading pipe (600) bottom portion and the fixed intercommunication in smoke chamber (500) right side end inner wall.

2. The novel blanking tube of claim 1, characterized in that: the inner wall of the rear end of the first blanking pipe (100) is provided with five overhaul ports (110), and the bottom of the inner wall of the right side end of the first blanking pipe (100) is provided with a pressure measuring port (120).

3. The novel blanking tube of claim 1, characterized in that: the outer wall of the bottom end of the first blanking pipe (100) is fixedly communicated with an expansion joint a (130), the bottom end part of the expansion joint a (130) is fixedly communicated with the top end part of the second blanking pipe (300), the upper end part of the inner side end wall of the second blanking pipe (300) is fixedly communicated with a flap valve (200), and the flap valve (200) is matched with the second blanking pipe (300) for use.

4. The novel blanking tube of claim 3, characterized in that: and the lower part of the inner wall of the right side end of the second blanking pipe (300) is provided with a gas blast hole (310), and the gas blast hole (310) is arranged below the flap valve (200).

5. The novel blanking tube of claim 1, characterized in that: an included angle formed between the bottom end portion of the second blanking pipe (300) and the top end portion of the third blanking pipe (400) is 30 degrees, the bottom end portion of the third blanking pipe (400) is communicated with an expansion joint b (410), and the bottom end portion of the expansion joint b (410) is fixedly communicated with the top end portion of the fourth blanking pipe (600).

6. The novel blanking tube of claim 1, characterized in that: the first blanking pipe (100) comprises a shell (101), a casting material layer (103) is arranged on the inner side end wall of the shell (101), and a microcrystal lining layer (104) is arranged on the inner side end wall of the casting material layer (103).

7. The novel blanking tube of claim 6, characterized in that: an insulating layer (102) is arranged between the shell (101) and the casting material layer (103), the outer side end wall of the insulating layer (102) is fixedly connected with the inner side end wall of the shell (101), the inner side end wall of the insulating layer (102) is fixedly connected with the outer side end wall of the casting material layer (103), and a hollow layer is arranged between the outer side end wall of the microcrystal lining layer (104) and the inner side end wall of the casting material layer (103).