Heat pipe hot blast stove

Abstract

The utility model provides a heat pipe hot blast stove which comprises a stove body, a hearth combustion assembly, a first heat exchange assembly, a second heat exchange assembly and a smoke exhaust assembly, and the hearth combustion assembly, the first heat exchange assembly and the second heat exchange assembly are all arranged in the stove body. Smoke passing channels which are sequentially connected and communicated in the smoke flowing direction are further arranged in the furnace body, the first heat exchange assembly and the second heat exchange assembly both extend in the vertical direction, the first heat exchange assembly comprises a mounting section and a heat exchange section which are oppositely arranged in the extending direction of the first heat exchange assembly, the mounting section is connected with the furnace body, and the heat exchange section is connected with the furnace body. And the heat exchange section is arranged in the smoke passing channel. In the embodiment of the invention, the heat exchange section of the first heat exchange assembly extends into the second flue gas channel, and when the flue gas passes through the second flue gas channel, due to the fact that the temperature of the heat exchange section is lower than that of the flue gas and smoke dust settles in the second flue gas channel when encountering cold, the smoke dust content can be reduced to a large extent, and the probability that the second heat exchange assembly is blocked is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange, in particular to a heat pipe hot blast stove. BACKGROUND

[0002] The heat pipe hot blast stove is a kind of heat energy conversion equipment, which can heat air to a high temperature to form hot blast by transferring heat generated by fuel combustion to the air. In the conventional technology, the heat pipe hot blast stove usually generates a large amount of flue gas during the heat exchange process, and the flue dust may block the heat exchange channel, which is inconvenient. CONTENT OF THE INVENTION

[0003] The main purpose of the present application is to provide a heat pipe hot blast stove to solve the problem of heat exchange channel blockage caused by excessive flue gas in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides a heat pipe hot blast stove, which comprises a furnace body, characterized in that it further comprises a hearth combustion assembly, a first heat exchange assembly, a second heat exchange assembly and a flue gas exhaust assembly, wherein the hearth combustion assembly, the first heat exchange assembly and the second heat exchange assembly are arranged inside the furnace body, and

[0005] The furnace body is further provided with a first flue gas passage, a second flue gas passage and a third flue gas passage which are sequentially connected in the flue gas flow direction, the first flue gas passage is arranged vertically, the second flue gas passage and the third flue gas passage are located at the bottom of the inner cavity of the furnace body, and the third flue gas passage and the second flue gas passage are arranged vertically.

[0006] The first heat exchange assembly and the second heat exchange assembly are arranged vertically, the first heat exchange assembly comprises an installation section and a heat exchange section which are oppositely arranged along the extension direction of the first heat exchange assembly, the installation section is connected with the furnace body, and the heat exchange section is arranged in the second flue gas passage.

[0007] The second heat exchange assembly is internally formed with a fourth flue gas passage which extends vertically, the fourth flue gas passage is connected with the flue gas exhaust assembly through a fifth flue gas passage to exhaust the hearth flue gas to the outside of the furnace body.

[0008] The flue gas generated by the hearth combustion assembly flows through the first flue gas passage, enters the second flue gas passage and the heat exchange section to perform the first heat exchange, the flue gas after the first heat exchange flows through the third flue gas passage, the fourth flue gas passage and the second heat exchange assembly to perform the heat exchange, and then flows to the flue gas exhaust assembly through the fifth flue gas passage.

[0009] In an embodiment, the second heat exchange assembly is a tube heat exchanger, and the second heat exchange assembly comprises a plurality of heat exchange tube bundles which are arranged vertically to accommodate the flue gas.

[0010] In an embodiment, the fourth flue gas passage is located in the second heat exchange assembly.

[0011] In an embodiment, the furnace body is provided with cold air inlet assemblies and hot air outlet assemblies, and cold air heat exchange passages are formed between adjacent cold air inlet assemblies and hot air outlet assemblies, cold air from the cold air inlet assemblies exchanges heat with the first heat exchange assembly in the cold air heat exchange passages, and the heat-exchanged cold air becomes hot air which is discharged to the outside of the furnace body through the hot air outlet assemblies.

[0012] In an embodiment, the furnace body is provided with cold air inlet assemblies and hot air outlet assemblies, and cold air heat exchange passages are formed between adjacent cold air inlet assemblies and hot air outlet assemblies, cold air from the cold air inlet assemblies exchanges heat with the first heat exchange assembly in the cold air heat exchange passages, and the heat-exchanged cold air becomes hot air which is discharged to the outside of the furnace body through the hot air outlet assemblies.

[0013] In an embodiment, the first heat exchange assembly is a heat pipe heat exchanger, the heat exchange section of the first heat exchange assembly is located below the mounting plate, the heat exchange section extends into the second flue gas passage, and the mounting section is located above the mounting plate.

[0014] In an embodiment, the furnace body is provided with cold air inlet assemblies and hot air outlet assemblies, and cold air heat exchange passages are formed between adjacent cold air inlet assemblies and hot air outlet assemblies, cold air from the cold air inlet assemblies exchanges heat with the first heat exchange assembly in the cold air heat exchange passages, and the heat-exchanged cold air becomes hot air which is discharged to the outside of the furnace body through the hot air outlet assemblies.

[0015] In an embodiment, the fifth flue gas passage is located above the second heat exchange assembly, the flue gas discharge passage is mounted on the upper portion of the furnace body, and the fifth flue gas passage is in communication with the flue gas discharge assembly.

[0016] In an embodiment, the hearth combustion assembly comprises a hearth and a fuel bin, and the hearth and the fuel bin are arranged in the furnace body and are in communication with the interior of the hearth.

[0017] In an embodiment, the furnace body is provided with cold air inlet assemblies and hot air outlet assemblies, and cold air heat exchange passages are formed between adjacent cold air inlet assemblies and hot air outlet assemblies, cold air from the cold air inlet assemblies exchanges heat with the first heat exchange assembly in the cold air heat exchange passages, and the heat-exchanged cold air becomes hot air which is discharged to the outside of the furnace body through the hot air outlet assemblies.

[0018] In an embodiment, the heat exchange section of the first heat exchange assembly extends into the second flue gas passage, and when the flue gas passes through the second flue gas passage, the smoke dust is precipitated in the second flue gas passage due to the low temperature of the heat exchange section relative to the flue gas, which can greatly reduce the content of smoke dust and reduce the probability of clogging of the second heat exchange assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative labor.

[0020] Figure 1 Figure 1 is a structural schematic diagram of a heat pipe hot blast furnace according to an embodiment of the present application;

[0021] Figure 2 Figure 2 is a bottom view of the heat pipe hot blast furnace according to an embodiment of the present application;

[0022] Figure 3 Figure 3 is a side view of the heat pipe hot blast furnace according to an embodiment of the present application;

[0023] Figure 4 Figure 4 is a side view of the heat pipe hot blast furnace according to an embodiment of the present application from another perspective.

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, furnace body; 11, mounting plate; 2, hearth combustion assembly; 21, hearth; 22, fuel bin 3, first heat exchange assembly; 31, mounting section; 32, heat exchange section; 4, second heat exchange assembly; 41, heat exchange tube bundle; 5, smoke exhaust assembly; 61, first smoke passage; 62, second smoke passage; 63, third smoke passage; 64, fourth smoke passage; 65, fifth smoke passage; 7, cold air inlet assembly; 8, hot air outlet assembly; 9, heat transfer port; 10, ash removal port. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] Furthermore, the technical solutions of the various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0027] When the embodiments give numerical ranges, it should be understood that, unless otherwise specified by the present application, both endpoints of each numerical range and any number between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application are used by those skilled in the art in the present technical field and in the description of the present application. Any method, equipment and material of the prior art similar or equivalent to the method, equipment and material described in the embodiments of the present application can be used to realize the present application.

[0028] The utility model provides a kind of heat pipe hot blast furnace, including furnace body 1, it is characterized in that, still including hearth combustion component 2, first heat exchange component, second heat exchange component 4 and exhaust smoke component 5, hearth combustion component 2, first heat exchange component, second heat exchange component 4 are all arranged in the inside of furnace body 1, wherein,

[0029] First smoke passage 61, second smoke passage 62, third smoke passage 63 that are sequentially connected in communication along the direction of flue gas flow are further provided in furnace body 1, first smoke passage 61 is arranged along vertical direction, second smoke passage 62 and third smoke passage 63 are located at the bottom of the inner cavity of furnace body 1, third smoke passage 63 and second smoke passage 62 are arranged vertically.

[0030] First heat exchange component and second heat exchange component 4 are both arranged along vertical direction, first heat exchange component includes mounting section 31 and heat exchange section 32 oppositely arranged along its extension direction, mounting section 31 is connected with furnace body 1, and heat exchange section 32 is arranged in second smoke passage 62.

[0031] Fourth smoke passage 64 extending vertically is formed in the inside of second heat exchange component 4, fourth smoke passage 64 is connected with fifth smoke passage 65 and exhaust smoke component 5, so as to discharge flue gas in hearth 21 to the outside of furnace body 1.

[0032] Wherein, flue gas generated by hearth combustion component 2 flows through first smoke passage 61, enters second smoke passage 62 and heat exchange section 32 to perform first heat exchange, after first heat exchange, flue gas flows through third smoke passage 63, fourth smoke passage 64 and second heat exchange component 4 to perform heat exchange, and then flows to exhaust smoke component 5 through fifth smoke passage 65.

[0033] In the embodiment of the present application, hearth combustion component 2 is used for heating air entering furnace body 1, flue gas passes through first smoke passage 61, second smoke passage 62, third smoke passage 63, fourth smoke passage 64 and fifth smoke passage 65 in sequence after passing through hearth 21, first heat exchange component and second heat exchange component 4 perform heat exchange on flue gas, flue gas is pre-cooled and settled in second smoke passage 62, the content of smoke dust in flue gas is reduced, the probability of clogging of first heat exchange component and second heat exchange component 4 is reduced, and after heat exchange, heat in flue gas is transferred to the outside of furnace body 1 through first heat exchange component.

[0034] In one embodiment, second heat exchange component 4 is a tube heat exchanger, and second heat exchange component 4 includes a plurality of heat pipe bundles 41, which are arranged along the vertical direction to accommodate flue gas.

[0035] In the embodiment of the present application, second heat exchange component 4 is a tube heat exchanger, and a plurality of heat pipe bundles 41 are arranged in second heat exchange component 4 and extend along the vertical direction, which can increase the heat exchange area and improve the heat exchange efficiency.

[0036] In an embodiment, the fourth flue gas passage 64 is located in the second heat exchange assembly 4.

[0037] It should be noted that the fourth flue gas passage 64 is composed of a plurality of heat exchange tube bundles 41.

[0038] In the embodiment of the present application, the fourth flue gas passage 64 is located in the second heat exchange assembly 4, which can more efficiently cool the internal flue gas and reduce the temperature of the flue gas when it is discharged, so as to reduce the damage caused by high-temperature flue gas to subsequent devices.

[0039] In an embodiment, the furnace body 1 is provided with a cold air inlet assembly 7 and a hot air outlet assembly 8, and a cold air heat exchange passage is formed between adjacent cold air inlet assemblies 7 and hot air outlet assemblies 8. The cold air from the cold air inlet assembly 7 exchanges heat with the first heat exchange assembly in the cold air heat exchange passage, and the cold air after heat exchange becomes hot air, which is then discharged to the outside of the furnace body 1 through the hot air outlet assembly 8.

[0040] It should be noted that the number of cold air inlet assemblies 7 is multiple, the number of hot air outlet assemblies 8 is one, and the cold air inlet assemblies 7 are respectively arranged on different sides of the furnace body 1.

[0041] In the embodiment of the present application, the cold air heat exchange passage is arranged to allow the cold air to exchange heat with the first heat exchange assembly inside the furnace body 1, more efficiently recover the heat energy in the furnace, and stably produce hot air to discharge the furnace body 1. Such a structure is relatively simple and convenient, has high heat exchange efficiency, and has low maintenance cost.

[0042] In an embodiment, the installation plate 11 is arranged inside the furnace body 1, and the first flue gas passage 61 and the first heat exchange assembly are installed on the installation plate 11.

[0043] It should be noted that the installation plate 11 is sealingly connected with the bottom of the first flue gas passage 61 and the first heat exchange assembly, and the installation end above the first heat exchange assembly is not communicated with the second flue gas passage 62 below.

[0044] In the embodiment of the present application, the installation plate 11 is arranged inside the furnace body 1, and the first flue gas passage 61 and the first heat exchange assembly are installed on the installation plate 11, which can more firmly and stably position the first flue gas passage 61 and the first heat exchange assembly inside the furnace body 1, thereby improving the stability of the device.

[0045] In an embodiment, the first heat exchange assembly is a heat pipe heat exchanger, the heat exchange section 32 on the first heat exchange assembly is located below the installation plate 11, the heat exchange section 32 extends into the second flue gas passage 62, and the installation section 31 is located above the installation plate 11.

[0046] In the embodiment of the present application, the first heat exchange assembly is a heat pipe heat exchanger, which has high heat conduction efficiency and can rapidly conduct heat. The heat exchange section 32 on the first heat exchange assembly is located below the mounting plate 11, and the heat exchange section 32 extends into the second smoke passage 62. The mounting section 31 is located above the mounting plate 11, so that the flue gas can pass through the second smoke passage 62 below the mounting plate 11, and the air discharged after heat exchange by the mounting section 31 has less dust.

[0047] In an embodiment, the furnace body 1 is provided with a heat transfer opening 9 corresponding to the mounting section 31, and the heat transfer opening 9 is in communication with the hot air outlet assembly 8.

[0048] It should be noted that the heat transfer opening 9 is a through hole, and the air heated by the mounting section 31 enters the hot air outlet assembly 8 through the heat transfer opening 9.

[0049] In the embodiment of the present application, the furnace body 1 is provided with a heat transfer opening 9 corresponding to the position of the mounting section 31, and the heat transfer opening 9 is in communication with the hot air outlet assembly 8. In this way, a direct and efficient heat transfer path can be formed, the heat exchange efficiency can be improved, and the hot air can be stably output.

[0050] In an embodiment, the fifth smoke passage 65 is located above the second heat exchange assembly 4, and the smoke exhaust passage is installed on the upper part of the furnace body 1. The fifth smoke passage 65 is in communication with the smoke exhaust assembly 5.

[0051] In the embodiment of the present application, the fifth smoke passage 65 is arranged above the second heat exchange assembly 4, and the smoke exhaust passage is installed on the upper part of the furnace body 1 and is in communication with the fifth smoke passage 65. In this way, the flue gas in the second heat exchange assembly 4 can be discharged to the outside of the furnace body 1, so that the flue gas generated in the hearth 21 can be stably discharged from the furnace body 1, and the stability of the device can be improved.

[0052] In an embodiment, the hearth combustion assembly 2 includes a hearth 21 and a fuel bin. The hearth 21 and the fuel bin are arranged in the furnace body 1, and the fuel bin is in communication with the inside of the hearth 21.

[0053] In the embodiment of the present application, the hearth combustion assembly 2 includes a hearth 21 and a fuel bin, and the fuel bin is in communication with the inside of the hearth 21. In this way, the fuel in the fuel bin can be added to the hearth 21, so that the hearth 21 can continuously and stably maintain a combustion state and continuously provide high-temperature flue gas.

[0054] In an embodiment, a dust removal opening 10 is further arranged on the bottom of the furnace body 1 and is in communication with the second smoke passage 62.

[0055] It should be noted that the dust is pre-cooled and settled after contacting the heat exchange section 32 of the first heat exchange assembly and falls into the second smoke passage 62 below.

[0056] In the embodiment of the application, the ash removal opening 10 is arranged at the bottom of the furnace body 1 and communicates with the second smoke passage 62, so that the staff can clean the accumulated smoke dust in time through the ash removal opening 10, thereby maintaining the continuous operation of the furnace body 1, which is relatively simple and convenient to maintain. In the above technical scheme of the utility model, the above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the utility model and by using the contents of the utility model specification and drawings is included in the patent protection range of the utility model.

Claims

1. A heat pipe hot air furnace comprising a furnace body, characterized by, It also includes a furnace combustion assembly, a first heat exchange assembly, a second heat exchange assembly, and a flue gas exhaust assembly. The furnace combustion assembly, the first heat exchange assembly, and the second heat exchange assembly are all located inside the furnace body. The furnace body is also provided with a first smoke passage, a second smoke passage, and a third smoke passage that are sequentially connected along the flue gas flow direction. The first smoke passage is arranged vertically, and the second and third smoke passages are located at the bottom of the inner cavity of the furnace body. The third smoke passage and the second smoke passage are arranged vertically. Both the first heat exchange component and the second heat exchange component extend vertically. The first heat exchange component includes an installation section and a heat exchange section that are arranged opposite to each other along its own extension direction. The installation section is connected to the furnace body, and the heat exchange section is located in the second flue gas passage. The second heat exchange component has a vertically extending fourth flue gas passage inside, which passes through a fifth flue gas passage and the exhaust component to discharge the furnace flue gas to the outside of the furnace body; The flue gas generated by the furnace combustion assembly enters the second flue gas passage and the heat exchange section through the first flue gas passage for the first heat exchange. After the first heat exchange, the flue gas flows through the third flue gas passage, the fourth flue gas passage and the second heat exchange assembly for heat exchange, and then flows to the exhaust assembly through the fifth flue gas passage.

2. The hot tube hot air furnace of claim 1, wherein The second heat exchange component is a shell-and-tube heat exchanger, which includes multiple heat exchange tube bundles that extend vertically to accommodate flue gas.

3. The hot tube hot air furnace of claim 1, wherein The fourth smoke passage is located inside the second heat exchange component.

4. The hot tube hot air furnace of claim 1, wherein The furnace body is provided with a cold air inlet assembly and a hot air outlet assembly. A cold air heat exchange channel is formed between adjacent cold air inlet assemblies and hot air outlet assemblies. The cold air from the cold air inlet assembly exchanges heat with the first heat exchange assembly in the cold air heat exchange channel. The cold air after heat exchange becomes hot air and is then discharged to the outside of the furnace body through the hot air outlet assembly.

5. The heat pipe hot air furnace according to claim 4, wherein It also includes an installation plate, which is disposed inside the furnace body, and the first flue gas passage and the first heat exchange component are installed on the installation plate.

6. The hot tube hot air furnace of claim 5, wherein The first heat exchange component is a heat pipe heat exchanger. The heat exchange section on the first heat exchange component is located below the mounting plate, the heat exchange section extends into the second flue gas passage, and the mounting section is located above the mounting plate.

7. The hot tube hot air furnace of claim 4 wherein, A heat transfer port is provided on the furnace body at a location corresponding to the installation section, and the heat transfer port is connected to the hot air outlet assembly.

8. The hot tube hot air furnace of claim 1, wherein The fifth flue gas passage is located above the second heat exchange component, and the flue gas exhaust component is installed on the upper part of the furnace body. The fifth flue gas passage is connected to the flue gas exhaust component.

9. The hot tube hot air furnace of claim 1, wherein, The furnace combustion assembly includes a furnace and a fuel chamber, both of which are located inside the furnace body, and the fuel chamber is in communication with the interior of the furnace.

10. The hot tube hot air furnace of claim 1, wherein It also includes a dust removal port, which is located at the bottom of the furnace body and communicates with the second flue gas passage.

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