Shell type waste heat steam boiler

Abstract

The utility model relates to the technical field of steam boilers, in particular to a shell type waste heat steam boiler which comprises a waste heat steam boiler body, an air inlet pipeline is arranged on the waste heat steam boiler body, an exhaust pipeline is arranged on the waste heat steam boiler body, and filtering mechanisms are arranged on the air inlet pipeline and the exhaust pipeline. Slag discharging mechanisms are arranged on the air inlet pipeline and the air outlet pipeline; and the filtering mechanism is used for filtering and cleaning the entered waste gas. According to the waste heat steam boiler, the filtering mechanism is arranged, waste heat waste gas is input into the waste heat steam boiler through the gas inlet pipeline, when waste heat steam passes through the filtering piece in the square filtering frame, the filtering piece filters the waste heat steam, and the filtering piece can effectively intercept impurities in the waste heat steam and prevent the impurities from being deposited on the heating surface of the boiler; and pipeline blockage, heat transfer efficiency reduction and local overheating damage are avoided, so that the service life of the boiler is prolonged, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam boiler technical field, concretely is a kind of shell-and -shell waste heat steam boiler. BACKGROUND

[0002] Shell-and -shell waste heat steam boiler utilizes the waste heat in high-temperature flue gas or exhaust gas discharged in industrial production process to produce steam, is widely used in petroleum, chemical industry, electric power and other industries, with energy saving and environmental protection, simple structure, strong adaptability and high thermal efficiency.

[0003] In some areas of the boiler, such as the elbow, the heat exchanger surface, or the area with low flow rate, the steam flow rate will slow down. The slow flow rate causes the particulate matter in the steam to gradually deposit on the heating surface due to gravity or inertia, especially in the elbow and the heat exchanger surface. This deposition can lead to a reduction in the internal flow cross-section of the pipe, an increase in flow resistance, a reduction in steam flow rate, and ultimately a blockage of the pipe. The thermal conductivity of the deposits is usually poor, which can lead to a reduction in the local heat transfer efficiency of the heating surface. The heat cannot be transferred out in time, causing the local metal temperature to rise, which can cause the metal to overheat, deform, and even burst.

[0004] In view of this, we propose a kind of shell-and -shell waste heat steam boiler. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a kind of shell-and -shell waste heat steam boiler, the shell-and -shell waste heat steam boiler, solve the problem that the particulate matter in steam deposits in the elbow and the heat exchanger surface of boiler can lead to pipe blockage.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of shell-and -shell waste heat steam boiler, including waste heat steam boiler, the waste heat steam boiler is provided with inlet pipe, the waste heat steam boiler is provided with exhaust pipe, the filter mechanism is arranged on the inlet pipe and exhaust pipe, the inlet pipe and exhaust pipe are provided with deslagging mechanism;The filter mechanism is used to filter and clean the incoming exhaust gas, and the deslagging mechanism is used to absorb and discharge the impurities falling after cleaning.

[0008] Preferably, the filter mechanism includes a square filter frame, the square filter frame is fixedly connected to the inner wall of the inlet pipe, the inner wall of the square filter frame is fixedly connected with a filter element, the outer wall of the exhaust pipe is fixedly connected with a bottom connecting frame, the top of the bottom connecting frame is fixedly connected with a cylindrical frame, the inner wall of the cylindrical frame is rotatably connected with a main shaft, the bottom of the main shaft is fixedly connected with an impeller, the top of the main shaft is fixedly connected with a reciprocating screw rod, the outer wall of the reciprocating screw rod is threadedly connected with a cleaning element, and the inner wall of the cleaning element is slidably connected with a guide rod.

[0009] Preferably, the inner wall of the cylindrical frame is in communication with the inner wall of the bottom connecting frame, and the outer wall of the main shaft is rotatably connected with the inner wall of the square filter frame.

[0010] Preferably, the guide rod is fixedly connected with the inner wall of the square filter frame, the outer wall of the cleaning member is tightly attached to the outer wall of the filter member, the reciprocating movement of the cleaning member facilitates the cleaning of the surface of the filter member, and the impeller is located on the inner wall of the cylindrical frame.

[0011] Preferably, the slag discharging mechanism comprises an air inlet telescopic pipe, one end of the air inlet telescopic pipe is fixedly connected with the outer wall of the cylindrical frame, the other end of the air inlet telescopic pipe is fixedly connected with the bottom of the cleaning member, the outer wall of the cleaning member is provided with a dust suction port, the bottom of the dust suction port is fixedly connected with one end of an air outlet telescopic pipe, the other end of the air outlet telescopic pipe is fixedly connected with a sundry pipe, and the left side of the waste heat steam boiler is fixedly connected with a collecting frame.

[0012] Preferably, the inner wall of the cleaning member is provided with a cavity, and the inner wall cavity of the cleaning member is in communication with the inner wall of the air inlet telescopic pipe.

[0013] Preferably, the outer wall of the air inlet telescopic pipe is fixedly connected with the inner wall of the square filter frame, and the outer wall of the air outlet telescopic pipe is fixedly connected with the inner wall of the square filter frame.

[0014] By means of the above technical scheme, the waste heat steam boiler of the shell type is provided. At least the following beneficial effects are achieved:

[0015] (1) The filter mechanism is arranged, the waste heat exhaust gas is input into the waste heat steam boiler through the air inlet pipe, the filter member filters the waste heat steam when the waste heat steam passes through the filter member in the square filter frame, the filter member can effectively intercept the impurities in the waste heat steam, prevents the impurities from depositing on the heating surface of the boiler, avoids the pipeline blockage, the reduction of heat transfer efficiency and the local overheating damage, thereby prolonging the service life of the boiler and improving the operation efficiency.

[0016] (2) The filter mechanism is arranged, the reciprocating screw rod drives the cleaning member to reciprocate on the surface of the guide rod, the outer wall of the filter member is scraped and cleaned, the filter member can be effectively prevented from being blocked due to the accumulation of impurities, the continuous and efficient filtering function of the filter member is ensured, the maintenance frequency is reduced, and the operation efficiency and reliability of the boiler are improved.

[0017] (3), the utility model discloses a set up the deslagging mechanism, the exhaust gas in the cylindrical frame passes through the air inlet telescopic pipe to enter the inner wall of cleaning piece, passes through the exhaust telescopic pipe, the impurity pipeline and discharges to the collection frame, when the inner wall of cleaning piece passes through the high -speed airflow, according to venturi effect, at this time, the dust suction port produces negative pressure, and the impurity and particulate matter on the filter piece are sucked into the cleaning piece, and are discharged to the collection frame through the exhaust telescopic pipe, the impurity on the filter piece surface is effectively removed and is discharged using the kinetic energy of waste gas to form strong suction in the inner wall of cleaning piece, this automatic cleaning mechanism improves the filtration efficiency, and reduces the frequency of equipment maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated herein to provide a further understanding of the utility model, constitute a part of the application:

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the structure schematic diagram of air inlet pipeline in the utility model;

[0021] Figure 3 It is the cross section structure schematic diagram of square filter frame in the utility model;

[0022] Figure 4 It is the structure schematic diagram of filter mechanism in the utility model;

[0023] Figure 5 It is the structure schematic diagram of impeller in the utility model;

[0024] Figure 6 It is the structure schematic diagram of deslagging mechanism in the utility model;

[0025] Figure 7 It is the structure schematic diagram of collection frame in the utility model.

[0026] In the drawing: 1, waste heat steam boiler;2, air inlet pipeline;3, exhaust pipeline;4, filter mechanism;41, square filter frame;42, filter piece;43, bottom connecting frame;44, main shaft;45, impeller;46, reciprocating screw;47, cleaning piece;48, guide rod;49, cylindrical frame;5, deslagging mechanism;51, air inlet telescopic pipe;52, dust suction port;53, exhaust telescopic pipe;54, impurity pipeline;55, collection frame. DETAILED DESCRIPTION

[0027] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-7 As shown in the accompanying drawings, the utility model provides a kind of technical scheme: a kind of pot shell type waste heat steam boiler, including waste heat steam boiler 1, waste heat steam boiler 1 is a kind of pot shell type waste heat steam boiler 1, waste heat steam boiler 1 is provided with inlet pipeline 2, waste heat steam boiler 1 is provided with exhaust pipe 3, inlet pipeline 2 is provided with filter mechanism 4 with exhaust pipe 3, inlet pipeline 2 is provided with deslagging mechanism 5 with exhaust pipe 3;Filter mechanism 4 is used to filter and clean the incoming exhaust gas, and deslagging mechanism 5 is used to absorb and discharge the impurities dropped after cleaning.

[0029] Filter mechanism 4 includes square filter frame 41, square filter frame 41 is fixedly connected on the inner wall of inlet pipeline 2, filter piece 42 is fixedly connected on the inner wall of square filter frame 41, when waste heat steam passes through filter piece 42 in square filter frame 41, filter piece 42 filters waste heat steam, the outer wall of exhaust pipe 3 is fixedly connected with bottom connecting frame 43, the top of bottom connecting frame 43 is fixedly connected with cylindrical frame 49, the inner wall of cylindrical frame 49 is rotatably connected with main shaft 44, the bottom of main shaft 44 is fixedly connected with impeller 45, the top of main shaft 44 is fixedly connected with reciprocating screw rod 46, the outer wall of reciprocating screw rod 46 is threadedly connected with cleaning piece 47, the inner wall of cleaning piece 47 is slidably connected with guide rod 48, the inner wall of cylindrical frame 49 is communicated with the inner wall of bottom connecting frame 43, the outer wall of main shaft 44 is rotatably connected with the inner wall of square filter frame 41, guide rod 48 is fixedly connected with the inner wall of square filter frame 41, the outer wall of cleaning piece 47 is tightly attached to the outer wall of filter piece 42, to facilitate the cleaning of the surface of filter piece 42 when cleaning piece 47 reciprocates, impeller 45 is located on the inner wall of cylindrical frame 49.When exhaust pipe 3 discharges exhaust gas, when passing through bottom connecting frame 43, cylindrical frame 49, impeller 45 in cylindrical frame 49 is driven to rotate, impeller 45 drives main shaft 44 to rotate, main shaft 44 drives reciprocating screw rod 46 to rotate, reciprocating screw rod 46 drives cleaning piece 47 to reciprocate on the surface of guide rod 48, to scrape and clean the outer wall of filter piece 42.

[0030] The deslagging mechanism 5 comprises an air inlet telescopic pipe 51, one end of the air inlet telescopic pipe 51 is fixedly connected to the outer wall of the cylindrical frame 49, the other end of the air inlet telescopic pipe 51 is fixedly connected to the bottom of the cleaning piece 47, the outer wall of the cleaning piece 47 is provided with a dust suction port 52, one end of an air outlet telescopic pipe 53 is fixedly connected to the bottom of the dust suction port 52, the other end of the air outlet telescopic pipe 53 is fixedly connected with a sundry pipe 54, a collecting frame 55 is fixedly connected to the left side of the waste heat steam boiler 1, a cavity is formed in the inner wall of the cleaning piece 47, the cavity in the inner wall of the cleaning piece 47 is communicated with the inner wall of the air inlet telescopic pipe 51, the outer wall of the air inlet telescopic pipe 51 is fixedly connected with the inner wall of the square filter frame 41, and the outer wall of the air outlet telescopic pipe 53 is fixedly connected with the inner wall of the square filter frame 41. The exhaust gas in the cylindrical frame 49 enters the inner wall of the cleaning piece 47 through the air inlet telescopic pipe 51, and then is discharged into the collecting frame 55 through the air outlet telescopic pipe 53 and the sundry pipe 54. When the inner wall of the cleaning piece 47 passes through the high-speed airflow, according to the Venturi effect, negative pressure is generated on the dust suction port 52 at the moment, the impurities and particulate matters on the filter piece 42 are sucked into the cleaning piece 47, and then are discharged into the collecting frame 55 through the air outlet telescopic pipe 53 and the sundry pipe 54.

[0031] The waste heat steam boiler of the utility model in use, through the air inlet pipe 2, the waste heat exhaust gas is input into the waste heat steam boiler 1, when the waste heat steam passes through the filter piece 42 in the square filter frame 41, the filter piece 42 filters the waste heat steam, the filter piece 42 can effectively intercept the impurities in the waste heat steam, prevent these impurities from depositing on the boiler heating surface, avoid the pipeline blockage, heat transfer efficiency reduction and local overheating damage, thereby prolonging the service life of the boiler and improving the operation efficiency.

[0032] Then when the exhaust pipe 3 discharges the exhaust gas, through the bottom connecting frame 43 and the cylindrical frame 49, the impeller 45 in the cylindrical frame 49 is driven to rotate, the impeller 45 drives the main shaft 44 to rotate, the main shaft 44 drives the reciprocating screw rod 46 to rotate, the reciprocating screw rod 46 drives the cleaning piece 47 to move up and down on the surface of the guide rod 48, and the outer wall of the filter piece 42 is scraped and cleaned, which can effectively prevent the filter piece 42 from being blocked due to the accumulation of impurities, ensure the continuous and efficient filtering function, reduce the maintenance frequency, and improve the boiler operation efficiency and reliability.

[0033] The exhaust gas in the cylindrical frame 49 enters the inner wall of the cleaning member 47 through the air inlet telescopic pipe 51, and then is discharged into the collection frame 55 through the air outlet telescopic pipe 53 and the impurity discharge pipe 54. When the inner wall of the cleaning member 47 passes through the high-speed airflow, according to the Venturi effect, a negative pressure is generated at the dust suction port 52 at this time, the impurities and particulate matters on the filter member 42 are sucked into the cleaning member 47, and then are discharged into the collection frame 55 through the air outlet telescopic pipe 53 and the impurity discharge pipe 54. The strong suction force is formed on the inner wall of the cleaning member 47 by using the kinetic energy of the exhaust gas, which effectively removes the impurities on the surface of the filter member 42 and discharges them. This automatic cleaning mechanism improves the filtering efficiency and reduces the frequency of equipment maintenance.

[0034] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drum-type heat recovery steam generator comprising a heat recovery steam generator (1), characterized by: The waste heat steam boiler (1) is provided with an air inlet pipeline (2), and the waste heat steam boiler (1) is provided with an air outlet pipeline (3), the air inlet pipeline (2) and the air outlet pipeline (3) are provided with a filtering mechanism (4), and the air inlet pipeline (2) and the air outlet pipeline (3) are provided with a slag discharge mechanism (5). The filtering mechanism (4) is used for filtering and cleaning the entering exhaust gas, and the slag discharge mechanism (5) is used for absorbing and discharging the impurities falling after cleaning.

2. A range boiler according to claim 1 wherein: The filtering mechanism (4) comprises a square filter frame (41), the square filter frame (41) is fixedly connected to the inner wall of the air inlet pipeline (2), a filter (42) is fixedly connected to the inner wall of the square filter frame (41), the outer wall of the air outlet pipeline (3) is fixedly connected with a bottom connecting frame (43), the top of the bottom connecting frame (43) is fixedly connected with a cylindrical frame (49), the inner wall of the cylindrical frame (49) is rotatably connected with a main shaft (44), the bottom of the main shaft (44) is fixedly connected with an impeller (45), the top of the main shaft (44) is fixedly connected with a reciprocating screw rod (46), the outer wall of the reciprocating screw rod (46) is threadedly connected with a cleaning piece (47), and the inner wall of the cleaning piece (47) is slidably connected with a guide rod (48).

3. A range boiler according to claim 2 wherein: The inner wall of the cylindrical frame (49) is in communication with the inner wall of the bottom connecting frame (43), and the outer wall of the main shaft (44) is rotatably connected with the inner wall of the square filter frame (41).

4. A range boiler according to claim 2 wherein: The guide rod (48) is fixedly connected to the inner wall of the square filter frame (41), the outer wall of the cleaning piece (47) is close to the outer wall of the filter (42), the surface of the filter (42) is cleaned when the cleaning piece (47) reciprocates, and the impeller (45) is located on the inner wall of the cylindrical frame (49).

5. A range boiler according to claim 2 wherein: The slag discharge mechanism (5) comprises an air inlet telescopic pipe (51), one end of the air inlet telescopic pipe (51) is fixedly connected to the outer wall of the cylindrical frame (49), the other end of the air inlet telescopic pipe (51) is fixedly connected to the bottom of the cleaning piece (47), the outer wall of the cleaning piece (47) is provided with a dust suction port (52), one end of an air outlet telescopic pipe (53) is fixedly connected to the bottom of the dust suction port (52), the other end of the air outlet telescopic pipe (53) is fixedly connected with a slag discharge pipeline (54), and the left side of the waste heat steam boiler (1) is fixedly connected with a collecting frame (55).

6. A range boiler according to claim 5 wherein: A cavity is formed in the inner wall of the cleaning piece (47), and the cavity in the inner wall of the cleaning piece (47) is in communication with the inner wall of the air inlet telescopic pipe (51).

7. A range boiler according to claim 5 wherein: The outer wall of the air inlet telescopic pipe (51) is fixedly connected to the inner wall of the square filter frame (41), and the outer wall of the air outlet telescopic pipe (53) is fixedly connected to the inner wall of the square filter frame (41).

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