Modular evaporation heating surface

Abstract

The utility model relates to the technical field of evaporation heating surfaces, and particularly discloses a modular evaporation heating surface which comprises two evaporation surface upper headers, side wall water-cooled wall upper headers are welded on two sides of the two evaporation surface upper headers, a plurality of water-cooled wall tubes are welded at the bottoms of the evaporation surface upper headers and the side wall water-cooled wall upper headers, and the water-cooled wall tubes are welded at the bottoms of the evaporation surface upper headers and the side wall water-cooled wall upper headers. An evaporation surface lower collecting box is welded to the bottom of the water cooling wall pipe located below the evaporation surface upper collecting box, a side wall water cooling wall lower collecting box is welded to the bottom of the water cooling wall pipe located below the side wall water cooling wall upper collecting box, and a cleaning mechanism is arranged on the front side of the water cooling wall pipe and used for cleaning the interior of the water cooling wall pipe. The cleaning mechanism comprises a bent pipe fixedly inserted between the front ends of the two side wall water-cooled wall lower collecting boxes, the bent pipe and a small pipe fixedly inserted at the front end of the evaporation upper collecting box located on the front side are matched with each other, scale can be soaked in a water-cooled wall pipe through scale removal liquid, and the scale removal purpose is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporation heating surfaces, in particular to a modular evaporation heating surface. Background Art

[0002] With the development of science and technology, the use of boilers is becoming more and more extensive. In order to fully absorb and utilize energy in boilers, the heating surfaces are usually arranged in various forms such as radiation heating surface, evaporation heating surface and convection heating surface. The evaporation heating surface is composed of the furnace water-cooled wall heating surface and the boiling tube. The water-cooled wall is the main evaporation heating surface in the boiler.

[0003] As an important part of heat exchange in boiler, water wall needs to have good heat exchange effect to ensure the efficiency of filtering and producing steam;

[0004] For example, the "A Waste Heat Boiler Evaporation Heating Surface" with the authorization announcement number "CN211345260U" sets up a series of evaporation heating surface tubes, uses the evaporation heating surface tubes to absorb the heat generated by combustion in the furnace, and thus heats the water in the evaporation heating surface tubes.

[0005] In the above scheme, although a series of evaporation heating surface tubes are used, water is passed through the evaporation heating surface tubes so that the heat generated by the combustion in the furnace is transferred through the evaporation heating surface tubes. However, after the boiler is used for a long time, scale is easily accumulated inside the evaporation heating surface tubes. The accumulated scale will affect the heat exchange efficiency of the heating surface, and the scale inside the evaporation heating surface tubes needs to be cleaned. Summary of the invention

[0006] The purpose of the utility model is to provide a modular evaporation heating surface, which can soak the scale in the water-cooled wall tube by descaling liquid to achieve the purpose of descaling, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a modular evaporation heating surface, comprising two evaporation surface upper headers, both sides of the two evaporation surface headers are welded with side wall water-cooled wall upper headers, the bottoms of the evaporation surface headers and the side wall water-cooled wall upper headers are welded with a plurality of water-cooled wall tubes, the bottoms of the water-cooled wall tubes below the evaporation surface headers are welded with an evaporation surface lower header, the bottoms of the water-cooled wall tubes below the side wall water-cooled wall upper headers are welded with a side wall water-cooled wall lower header, a cleaning mechanism is provided on the front side of the water-cooled wall tubes, the cleaning mechanism is used to clean the inside of the water-cooled wall tubes, the cleaning mechanism comprises a bent pipe fixedly inserted between the front ends of the two side wall water-cooled wall lower headers, and a small tube is fixedly inserted with the bent pipe and the front end of the evaporation surface header on the front side.

[0008] Preferably, the front ends of the two small tubes are detachably connected with connecting pipes, the front end of the connecting pipe at the bottom is fixedly connected with a corrugated bottle, and the front end of the corrugated bottle is fixedly connected with a water inlet pipe.

[0009] Preferably, the front end of the connecting pipe at the top is fixedly plugged with a liquid box, the front end of the liquid box is fixedly plugged with a water outlet pipe, and valves are installed inside the water outlet pipe and the water inlet pipe.

[0010] Preferably, a connecting pipe is fixedly inserted between the side wall water-cooled wall lower header and the evaporation surface lower header.

[0011] Preferably, a heat exchange mechanism is provided at the water-cooled wall tube, and the heat exchange mechanism is used for exchanging heat between the internal medium of the water-cooled wall tube and the outside of the water-cooled wall tube.

[0012] Preferably, the heat exchange mechanism comprises a plurality of fins fixedly connected to the outer wall of the water-cooled wall tube, and the fins and the water-cooled wall tube are made of carbon steel.

[0013] Preferably, the heat exchange mechanism further comprises a plurality of through grooves opened inside the water-cooled wall tubes, and connecting plates are fixedly inserted at the top and bottom of the water-cooled wall tubes near the through grooves.

[0014] Preferably, grooves are provided inside the connecting plate and the fins.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By injecting descaling liquid into the water-cooled wall tube, the descaling liquid soaks the scale in the water-cooled wall tube to achieve the purpose of descaling. The corrugated bottle is compressed or stretched to facilitate the flow of descaling liquid in the water-cooled wall tube, which can improve the descaling effect;

[0017] 2. The design of fins and through grooves can increase the heat exchange area, and the design of connecting plates can further increase the heat exchange area, and the design of grooves can increase the contact surface between water in the water-cooled wall tubes and the connecting plates and fins, further improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 It is a schematic diagram of a half-section structure of the corrugated bottle of the utility model;

[0021] Figure 3 It is a half-section structural schematic diagram of the liquid box of the utility model;

[0022] Figure 4 It is a partial structural schematic diagram of the water-cooled wall tube of the utility model;

[0023] Figure 5 It is a partial half-section structural schematic diagram of the water-cooled wall tube of the utility model.

[0024] Description of reference numerals:

[0025] 1. Evaporation surface upper header; 2. Side wall water-cooled wall upper header; 3. Water-cooled wall tube; 4. Evaporation surface lower header; 5. Side wall water-cooled wall lower header; 6. Cleaning mechanism; 61. Bend pipe; 62. Connecting pipe; 63. Bellows bottle; 64. Water inlet pipe; 65. Liquid box; 66. Water outlet pipe; 67. Valve; 68. Small tube; 7. Connecting pipe; 8. Heat exchange mechanism; 81. Fin; 82. Through groove; 83. Connecting plate; 84. Groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3The utility model provides a technical solution: a modular evaporation heating surface, including two evaporation surface headers 1, both sides of the two evaporation surface headers 1 are welded with side wall water-cooled wall upper headers 2, the bottoms of the evaporation surface headers 1 and the side wall water-cooled wall upper headers 2 are welded with a plurality of water-cooled wall tubes 3, the bottoms of the water-cooled wall tubes 3 below the evaporation surface headers 1 are welded with an evaporation surface lower header 4, the bottoms of the water-cooled wall tubes 3 below the side wall water-cooled wall upper headers 2 are welded with a side wall water-cooled wall lower header 5, a cleaning mechanism 6 is arranged on the front side of the water-cooled wall tubes 3, the cleaning mechanism 6 is used to clean the inside of the water-cooled wall tubes 3, the cleaning mechanism 6 includes a fixed plug-in at the front of the two side wall water-cooled wall lower headers 5 The curved pipe 61 between the ends, the curved pipe 61 and the front end of the upper header 1 on the evaporation surface on the front side are fixedly plugged with a small tube 68, the front ends of the two small tubes 68 are detachably connected with a connecting pipe 62, the front end of the connecting pipe 62 at the bottom is fixedly plugged with a corrugated bottle 63, the front end of the corrugated bottle 63 is fixedly plugged with a water inlet pipe 64, the front end of the connecting pipe 62 at the top is fixedly plugged with a liquid box 65, the front end of the liquid box 65 is fixedly plugged with a water outlet pipe 66, valves 67 are installed inside the water outlet pipe 66 and the water inlet pipe 64, a connecting pipe 7 is fixedly plugged between the lower header 5 of the side wall water-cooled wall and the lower header 4 of the evaporation surface, so that the lower header 5 of the side wall water-cooled wall and the lower header 4 of the evaporation surface are connected.

[0028] By adopting the above technical scheme, the upper part of the evaporation surface header 1 and the upper header 2 of the side wall water-cooled wall are fixedly plugged with a steam exhaust pipe. The evaporation surface header 1, the upper header 2 of the side wall water-cooled wall, the water-cooled wall tube 3, the lower header 4 of the evaporation surface and the lower header 5 of the side wall water-cooled wall can be welded and assembled during factory production, so that the heating surface is designed and manufactured into a module during manufacturing. After the module is manufactured, it is sent to the installation site for installation, which ensures product quality and saves installation time and cost. During installation, the device is installed in the furnace of the boiler. The small tube 68 and the connecting pipe 62 can be connected through a joint. The joint connection method is the existing technology, which can be but not limited to threaded connection. During installation, the connecting pipe 6 is connected through the small tube 68. 2, the connecting pipe 62 extends out of the furnace body of the boiler, and the interiors of the evaporation surface upper header 1, the side wall water-cooled wall upper header 2, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5 are connected. When the device is installed and used, by closing the valve 67 at the water outlet pipe 66, and then opening the valve 67 at the water inlet pipe 64, water is supplied to the elbow 61, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5 through the external water supply equipment, the fuel combustion in the furnace generates heat, and the heat is exchanged through the heat exchange tube, so that the water in the water-cooled wall tube 3 is heated to generate steam, and the generated steam is discharged from the steam discharge pipe, and the scale in the water-cooled wall tube 3 is cleaned regularly. When the scale is cleaned, Turn off the boiler and let the temperature inside the boiler cool to room temperature. Open both valves 67. The bellows bottle 63 is made of soft plastic. A joint can be installed at one end of the water inlet pipe 64 away from the bellows bottle 63. When the boiler is in use, it is connected to an external water supply device through the joint. When cleaning, the water inlet pipe 64 is connected to a box pipe with a descaling liquid. The descaling liquid is a prior art, so it will not be described in detail. A liquid pump is installed in the box pipe connection of the descaling liquid to facilitate the injection of the descaling liquid into the evaporation surface upper header 1, the side wall water-cooled wall upper header 2, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5. When the descaling liquid is full, part of the descaling liquid will be discharged from the water outlet pipe 66. At this time, close the water outlet pipe 66 and the water inlet pipe 64. The valve 67 is used to soak the scale in the water-cooled wall tube 3 with the descaling liquid, so as to achieve the purpose of descaling. One end of the bellows 63 can be fixedly connected to the hydraulic equipment, and the other end of the bellows 63 is fixed to the external fixed object. The bellows 63 is compressed or stretched by the external hydraulic equipment to facilitate the flow of the descaling liquid in the water-cooled wall tube 3, thereby improving the descaling effect. After soaking, the joint at the water inlet pipe 64 is connected to the external water supply equipment. By opening the two valves 67, the external water supply equipment injects water into the evaporation surface upper header 1, the side wall water-cooled wall upper header 2, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5 through the elbow 61 and the connecting pipe 62, so that the scale removed by the descaling liquid is discharged from the water outlet pipe 66.

[0029] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, a heat exchange mechanism 8 is provided at the water-cooled wall tube 3, and the heat exchange mechanism 8 is used for exchanging heat between the internal medium of the water-cooled wall tube 3 and the outside of the water-cooled wall tube 3. The heat exchange mechanism 8 includes a plurality of fins 81 fixedly connected to the outer wall of the water-cooled wall tube 3, and the fins 81 and the water-cooled wall tube 3 are made of carbon steel. The heat exchange mechanism 8 also includes a plurality of through grooves 82 opened inside the water-cooled wall tube 3, and the top and bottom of the water-cooled wall tube 3 near the through grooves 82 are fixedly plugged with connecting plates 83, and the connecting plates 83 and the inside of the fins 81 are provided with grooves 84.

[0030] By adopting the above technical solution, when in use, the boiler exchanges heat through the water-cooled wall tube 3 and the heat exchange mechanism 8, which, on the one hand, heats the water inside the water-cooled wall tube 3, and on the other hand, reduces the temperature of the furnace wall to play a protective role. When the water-cooled wall tube 3 exchanges heat, the design of the fins 81 and the through grooves 82 can increase the heat exchange area, and the design of the connecting plate 83 can further increase the heat exchange area, thereby improving the heat exchange efficiency, and the design of the groove 84 can increase the contact area between the water in the water-cooled wall tube 3 and the connecting plate 83 and the fins 81, further improving the heat exchange efficiency.

[0031] Working principle: The evaporation surface upper header 1, the side wall water-cooled wall upper header 2, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5 of the evaporation heating surface can be welded and assembled during factory production, so that the heating surface is designed and manufactured into a module during manufacturing. After the module is manufactured, it is sent to the installation site for installation, which ensures product quality and saves installation time and cost. When cleaning the scale, turn off the boiler and cool the temperature in the boiler to room temperature. By opening both valves 67, the water inlet pipe 64 is connected to the box pipe with descaling liquid, and the box pipe of the descaling liquid is connected A liquid pump is installed to facilitate the injection of descaling liquid into the evaporation surface upper header 1, the side wall water-cooled wall upper header 2, the water-cooled wall tube 3, the evaporation surface lower header 4 and the side wall water-cooled wall lower header 5. When the descaling liquid is full, part of the descaling liquid will be discharged from the water outlet pipe 66. At this time, the valves 67 on the water outlet pipe 66 and the water inlet pipe 64 are closed, and the descaling liquid is used to soak the scale in the water-cooled wall tube 3 to achieve the purpose of descaling. The corrugated bottle 63 is compressed or stretched to facilitate the flow of the descaling liquid in the water-cooled wall tube 3, which can improve the descaling effect. The heat exchange mechanism 8 can increase the heat exchange surface to improve the heat exchange effect.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A modular evaporation heating surface, comprising two evaporation surface headers (1), characterized in that: The two sides of the two evaporation surface upper headers (1) are welded with side wall water-cooled wall upper headers (2); the bottoms of the evaporation surface upper headers (1) and the side wall water-cooled wall upper headers (2) are welded with a plurality of water-cooled wall tubes (3); the bottoms of the water-cooled wall tubes (3) below the evaporation surface headers (1) are welded with evaporation surface lower headers (4); the bottoms of the water-cooled wall tubes (3) below the side wall water-cooled wall upper headers (2) are welded with side wall water-cooled wall lower headers (5); A cleaning mechanism (6) is provided on the front side of the water-cooled wall tube (3), and the cleaning mechanism (6) is used to clean the inside of the water-cooled wall tube (3); The cleaning mechanism (6) comprises a bent pipe (61) fixedly inserted between the front ends of the lower headers (5) of the two side wall water-cooled walls, and a small tube (68) is fixedly inserted between the bent pipe (61) and the front end of the header (1) on the evaporation surface at the front side.

2. A modular evaporative heating surface according to claim 1, characterized in that: The front ends of the two small tubes (68) are detachably connected to the connecting pipe (62), the front end of the lower connecting pipe (62) is fixedly plugged into a corrugated bottle (63), and the front end of the corrugated bottle (63) is fixedly plugged into a water inlet pipe (64).

3. A modular evaporation heating surface according to claim 2, characterized in that: The front end of the connecting pipe (62) located at the top is fixedly connected to a liquid box (65), the front end of the liquid box (65) is fixedly connected to a water outlet pipe (66), and valves (67) are installed inside the water outlet pipe (66) and the water inlet pipe (64).

4. A modular evaporation heating surface according to claim 3, characterized in that: A connecting pipe (7) is fixedly inserted between the side wall water-cooled wall lower header (5) and the evaporation surface lower header (4).

5. A modular evaporation heating surface according to claim 4, characterized in that: The water-cooled wall tube (3) is provided with a heat exchange mechanism (8), and the heat exchange mechanism (8) is used for exchanging heat between the internal medium of the water-cooled wall tube (3) and the outside of the water-cooled wall tube (3).

6. A modular evaporation heating surface according to claim 5, characterized in that: The heat exchange mechanism (8) comprises a plurality of fins (81) fixedly connected to the outer wall of the water-cooled wall tube (3); the fins (81) and the water-cooled wall tube (3) are made of carbon steel.

7. A modular evaporative heating surface according to claim 6, characterized in that: The heat exchange mechanism (8) further comprises a plurality of through grooves (82) formed inside the water-cooled wall tube (3), and connecting plates (83) are fixedly inserted at the top and bottom of the water-cooled wall tube (3) near the through grooves (82).

8. The modular evaporation heating surface according to claim 7, characterized in that: The connecting plate (83) and the fin (81) are both provided with grooves (84) inside.

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