Non-stop high-temperature purging device in furnace pipe

Abstract

The utility model belongs to the technical field of flue cleaning, and particularly relates to a non-stop high-temperature purging device in a furnace pipe, which comprises a smoke exhaust pipe, a filter screen is fixedly mounted in an inner cavity of the smoke exhaust pipe, and a purging mechanism is fixedly mounted in the inner cavity of the smoke exhaust pipe; the purging mechanism comprises a purging assembly, the purging assembly comprises a compression air pump, the output end of the compression air pump communicates with an air inlet pipe, and the rear end of the air inlet pipe penetrates through the smoke exhaust pipe and extends into the smoke exhaust pipe. According to the non-shutdown high-temperature purging device in the furnace pipe, compressed gas enters the gas communicating rod through the gas inlet pipe by means of the compression gas pump, and meanwhile, the communicating pipe is communicated with the gas outlet pipe through the valve, so that pressurized steam enters the gas inlet pipe, and the compressed gas and the pressurized steam are in contact to become high-pressure steam; when dust is accumulated on the filter screen, high-pressure steam enters the gas communicating frame through the gas communicating rod and blows open the closing plate, so that the high-pressure steam is discharged towards the filter screen, and the high-pressure steam passes through the filter screen and blows down dust accumulated on the filter screen.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cleaning flue, especially relates to high temperature blowing device in furnace tube. BACKGROUND

[0002] In the coal-fired power plant generator set, the waste gas in the boiler can enter the filtering equipment along the flue to filter, and the dust and harmful gas in the waste gas are filtered down, but after long time filtering of the filtering equipment, a large amount of dust is accumulated in it, so the flue and the filtering equipment are regularly blown and cleaned.

[0003] At present, the cleaning process usually disassembles the equipment to blow and clean, which has the following problems in actual operation:

[0004] 1. The whole boiler needs to be stopped during the cleaning process, and the flue and the filtering equipment can be disassembled after temperature reduction, the cleaning process is time-consuming and laborious, and the power generation efficiency of the boiler generator set is also wasted;

[0005] 2. The whole boiler needs to be stopped during the cleaning process, which leads to the need of more fuel and time for the boiler to burn again, and the process consumes more energy and resources. INVENTION CONTENTS

[0006] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research, and after a lot of creative labor, the present utility model is completed.

[0007] Specifically, the technical problem to be solved by the present utility model is to provide a high-temperature blowing device in the furnace tube without stopping the furnace, to solve the technical problems of the current dust cleaning in the boiler, which needs to stop the furnace and disassemble, time-consuming and laborious, and the high-temperature heat is not used when the furnace is stopped, and energy is wasted.

[0008] To solve the above technical problems, the utility model provides the following technical scheme:

[0009] The high-temperature blowing device in the furnace tube without stopping the furnace comprises a smoke exhaust pipe, a filter screen is fixedly installed in the inner cavity of the smoke exhaust pipe, and a blowing mechanism is fixedly installed in the inner cavity of the smoke exhaust pipe.

[0010] The blowing mechanism comprises a blowing assembly, the blowing assembly comprises a compressed air pump, the output end of the compressed air pump is communicated with an air inlet pipe, the rear end of the air inlet pipe penetrates through the smoke exhaust pipe and extends to the inside of the smoke exhaust pipe.

[0011] As the improved technical scheme, the blowing assembly further comprises a connecting frame, an outer surface of the connecting frame is fixedly connected with an inner surface of the smoke exhaust pipe, a front surface of the connecting frame penetrates through the smoke exhaust pipe and extends to an outside of the smoke exhaust pipe, a top and a bottom of the connecting frame are fixedly installed with a gas communication frame, a top of the gas communication frame is fixedly installed with a gas communication rod, and a front end of the gas communication rod is fixedly connected with a rear end of the air inlet pipe.

[0012] As the improved technical scheme, an inner surface of the gas communication frame is fixedly installed with a rotating rod, an outer surface of the rotating rod is sleeved with a torsion spring, and the outer surface of the rotating rod is fixedly installed with a closing plate.

[0013] As the improved technical scheme, both ends of the rotating rod penetrate through the gas communication frame and extend to an inside of the gas communication frame, one end of the torsion spring is fixedly connected with the outer surface of the rotating rod, and the other end of the torsion spring is fixedly connected with an inner wall of the gas communication frame.

[0014] As the improved technical scheme, the blowing mechanism further comprises a heat energy circulation assembly, the heat energy circulation assembly comprises a heat conduction box, a back surface of the heat conduction box is fixedly connected with a front surface of the smoke exhaust pipe, an inner surface of the heat conduction box is fixedly installed with a heat conduction grid, and a back surface of the heat conduction grid is fixedly connected with a front surface of the connecting frame.

[0015] As the improved technical scheme, a top of the heat conduction grid is communicated with a communication pipe, an outer surface of the communication pipe is fixedly installed with a valve, a right end of the valve is communicated with a steam recovery pipe, a right end of the steam recovery pipe is communicated with a small steam generator, a left side of the valve is communicated with an air outlet pipe, and a top of the heat conduction box, away from the communication pipe, is provided with a water inlet pipe.

[0016] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0017] 1. The present application periodically blows the filter screen by increasing the design, and the filter screen is blown by the cooperation of the compression gas pump, the air inlet pipe and the gas communication rod, the cooperation of the gas communication rod and the gas communication frame and the connecting frame, and the cooperation of the gas communication frame, the torsion spring and the closing plate, so that the dust accumulated on the filter screen in the flue is blown without stopping the fire in the boiler, and the problem that the boiler needs to be stopped and the entire flue needs to be disassembled when the filter equipment is cleaned is avoided.

[0018] 2. The utility model discloses a design that fully utilizes the heat energy in flue gas, through the cooperation of the connecting frame and the heat conduction grid with the heat conduction box and the communicating pipe, the cooperation of the communicating pipe and the valve with the air inlet pipe and the air outlet pipe, the heat transferred in the flue gas heats water, and the water vapor is combined with high-pressure gas to blow the filter screen, which improves the cleaning of the filter screen, and through the cooperation of the communicating pipe and the valve with the steam recovery pipe and the small steam generator, the flue gas heat energy is fully utilized for small-scale power generation, and the generated electric energy can be used for the compressed air pump. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without the creative labor. Among them:

[0020] Figure 1 It is the overall structure schematic diagram of the high-temperature blowing device in the furnace tube of the utility model.

[0021] Figure 2 It is the exhaust pipe three-dimensional sectional structure schematic diagram of the high-temperature blowing device in the furnace tube of the utility model.

[0022] Figure 3 It is the blowing assembly partial three-dimensional structure schematic diagram of the high-temperature blowing device in the furnace tube of the utility model.

[0023] Figure 4 It is the rotating rod, torsion spring and closing plate three-dimensional structure schematic diagram of the high-temperature blowing device in the furnace tube of the utility model.

[0024] Figure 5 It is the heat energy circulation assembly partial three-dimensional sectional structure schematic diagram of the high-temperature blowing device in the furnace tube of the utility model.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, exhaust pipe;2, filter screen;3, blowing mechanism;31, blowing assembly;311, compressed air pump;312, air inlet pipe;313, connecting frame;314, gas communication frame;315, gas communication rod;316, rotating rod;317, torsion spring;318, closing plate;32, heat energy circulation assembly;321, heat conduction box;322, heat conduction grid;323, communicating pipe;324, valve;325, steam recovery pipe;326, small steam generator;327, air outlet pipe;328, water inlet pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0029] Meanwhile, "and / or" or "or / and" appearing throughout the text means that three schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0030] In addition, the description of "first", "second" and the like in the present utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present utility model.

[0031] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present embodiment provides a furnace tube high-temperature purging device, which comprises a smoke exhaust pipe 1, a filter screen 2 is fixedly installed in the inner cavity of the smoke exhaust pipe 1, and a purging mechanism 3 is fixedly installed in the inner cavity of the smoke exhaust pipe 1.

[0032] The purging mechanism 3 comprises a purging assembly 31, and the purging assembly 31 comprises a compressed air pump 311.

[0033] The compressed air pump 311 is electrically connected with an external power supply, and the compressed air pump 311 is controlled by an external plc programming program.

[0034] As shown in Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown in the figures, the blowing assembly 31 further comprises a connecting frame 313, an outer surface of the connecting frame 313 is fixedly connected with an inner surface of the smoke exhaust pipe 1, a front surface of the connecting frame 313 penetrates through the smoke exhaust pipe 1 and extends to an outside of the smoke exhaust pipe 1, a top and a bottom of the connecting frame 313 are fixedly installed with a gas communication frame 314, a top of the gas communication frame 314 is fixedly installed with a gas communication rod 315, a front end of the gas communication rod 315 is fixedly connected with a rear end of the air inlet pipe 312.

[0035] As shown in the figures, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figures, an inner surface of the gas communication frame 314 is fixedly installed with a rotating rod 316, an outer surface of the rotating rod 316 is sleeved with a torsion spring 317, and the outer surface of the rotating rod 316 is fixedly installed with a closing plate 318.

[0036] As shown in the figures, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figures, both ends of the rotating rod 316 penetrate through the gas communication frame 314 and extend to an inside of the gas communication frame 314, one end of the torsion spring 317 is fixedly connected with the outer surface of the rotating rod 316, and the other end of the torsion spring 317 is fixedly connected with an inner wall of the gas communication frame 314.

[0037] The torsion spring 317 can drive the closing plate 318 to rotate through the rotating rod 316, so that the two closing plates 318 close the gas outlet of the gas communication frame 314, to avoid dust accumulation at the gas outlet of the gas communication frame 314 when the flue gas moves upward, and only when the high-pressure gas in the gas communication frame 314 blows, the two closing plates 318 can be blown open.

[0038] As shown in the figures, Figure 1 and Figure 5 As shown in the figures, the blowing mechanism 3 further comprises a thermal energy circulation assembly 32, the thermal energy circulation assembly 32 comprises a heat conduction box 321, a back surface of the heat conduction box 321 is fixedly connected with a front surface of the smoke exhaust pipe 1, and an inner surface of the heat conduction box 321 is fixedly installed with a heat conduction grid 322, a back surface of the heat conduction grid 322 is fixedly connected with a front surface of the connecting frame 313.

[0039] As shown in the figures, Figure 1 and Figure 5 As shown in the figures, a top of the heat conduction grid 322 is communicated with a communication pipe 323, an outer surface of the communication pipe 323 is fixedly installed with a valve 324, a right end of the valve 324 is communicated with a steam recovery pipe 325, a right end of the steam recovery pipe 325 is communicated with a small steam generator 326, a left side of the valve 324 is communicated with an air outlet pipe 327, and a top of the heat conduction box 321 and away from the communication pipe 323 is provided with a water inlet pipe 328.

[0040] The small steam generator 326 is electrically connected with an external power source, and is controlled by an external PLC programming program.

[0041] In use, the continuous combustion in the furnace, the gas generated during combustion will be discharged into the processing plant through the flue, the flue gas passes through the filter screen 2 in the flue, which will block the residual dust in the flue gas, at the same time, the high temperature heat in the flue gas will be transferred to the connecting frame 313, the connecting frame 313 will transmit the heat to the heat conduction grid 322, and then to the water in the heat conduction box 321, boiling the water, the steam generated during boiling of the water will be pressurized in the heat conduction box 321 for a period of time, then the valve 324 opens to connect the communicating pipe 323 with the steam recovery pipe 325, so that the pressurized steam will enter the small steam generator 326 to generate electricity, the electrical energy will drive the compressed air pump 311 to compress and store air, when it is necessary to periodically blow the filter screen 2, the compressed gas in the compressed air pump 311 will enter the gas communicating rod 315 through the air inlet pipe 312, at the same time, the valve 324 will connect the communicating pipe 323 with the air outlet pipe 327, so that the pressurized steam enters the air inlet pipe 312, so that the compressed gas and the pressurized steam are in contact to become high-pressure steam, the high-pressure steam will first enter the gas communicating frame 314 through the gas communicating rod 315, and blow open the closing plate 318, so that the high-pressure steam is discharged against the filter screen 2, the high-pressure steam will pass through the filter screen 2 to blow down the dust accumulated on the filter screen 2.

[0042] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or deformations to the present application, all of these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A device for high-temperature purging in a furnace without stopping the furnace, comprising a smoke exhaust pipe (1), characterized in that: The inner cavity of the smoke exhaust pipe (1) is fixedly installed with a filter screen (2), and the inner cavity of the smoke exhaust pipe (1) is fixedly installed with a purging mechanism (3); The purging mechanism (3) comprises a purging assembly (31), and the purging assembly (31) comprises a compressed gas pump (311), and the output end of the compressed gas pump (311) is communicated with an air inlet pipe (312), and the rear end of the air inlet pipe (312) penetrates through the smoke exhaust pipe (1) and extends to the inside of the smoke exhaust pipe (1).

2. The in-furnace high temperature purging device according to claim 1, characterized in that: The purging assembly (31) further comprises a connecting frame (313), the outer surface of the connecting frame (313) is fixedly connected with the inner surface of the smoke exhaust pipe (1), the front surface of the connecting frame (313) penetrates through the smoke exhaust pipe (1) and extends to the outside of the smoke exhaust pipe (1), the top and bottom of the connecting frame (313) are fixedly installed with a gas communication frame (314), the top of the gas communication frame (314) is fixedly installed with a gas communication rod (315), and the front end of the gas communication rod (315) is fixedly connected with the rear end of the air inlet pipe (312).

3. The in-furnace high temperature purging device according to claim 2, characterized in that: The inner surface of the gas communication frame (314) is fixedly installed with a rotating rod (316), the outer surface of the rotating rod (316) is sleeved with a torsion spring (317), and the outer surface of the rotating rod (316) is fixedly installed with a closing plate (318).

4. The in-furnace high temperature purging apparatus according to claim 3, wherein: Both ends of the rotating rod (316) penetrate through the gas communication frame (314) and extend to the inside of the gas communication frame (314), one end of the torsion spring (317) is fixedly connected with the outer surface of the rotating rod (316), and the other end of the torsion spring (317) is fixedly connected with the inner wall of the gas communication frame (314).

5. The in-furnace high temperature purging device according to claim 1, characterized in that: The purging mechanism (3) further comprises a heat energy circulation assembly (32), the heat energy circulation assembly (32) comprises a heat conduction box (321), the back surface of the heat conduction box (321) is fixedly connected with the front surface of the smoke exhaust pipe (1), the inner surface of the heat conduction box (321) is fixedly installed with a heat conduction grid (322), and the back surface of the heat conduction grid (322) is fixedly connected with the front surface of the connecting frame (313).

6. The in-furnace high temperature purging apparatus of claim 5, wherein: The top of the heat conduction grid (322) is communicated with a communication pipe (323), the outer surface of the communication pipe (323) is fixedly installed with a valve (324), the right end of the valve (324) is communicated with a steam recovery pipe (325), the right end of the steam recovery pipe (325) is communicated with a small steam generator (326), the left side of the valve (324) is communicated with an air outlet pipe (327), and the top of the heat conduction box (321) and away from the communication pipe (323) is provided with a water inlet pipe (328).

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