Coil pipe type temperature-adjustable heat-conducting oil furnace

Abstract

The invention relates to the technical field of heating devices, and discloses a coil pipe type temperature-adjustable heat conduction oil furnace which comprises a hearth, an outer coil pipe and an inner coil pipe which are arranged in the hearth, and a cooling turning plate installed in the hearth, a cooling cavity is formed between the hearth and the cooling turning plate, the outer coil pipe and the inner coil pipe are arranged in the hearth, and flame of a combustor is arranged at one end of the hearth. A cooling hole is formed in one end, close to the cooling turning plate, of the hearth; the cooling turning plate comprises a mounting ring mounted in the hearth and a closing plate mounted on the mounting ring and used for closing a middle through hole of the mounting ring, and the closing plate has an open state and a closed state. According to the coil pipe type temperature-adjustable heat conduction oil furnace, through the arrangement of the cooling turning plate, when cooling treatment is needed, the cooling efficiency is improved to a certain degree.

Description

Technical Field

[0001] The present invention relates to the technical field of heating devices, and in particular to a coil-type heat-conducting oil furnace with adjustable temperature. Background Art

[0002] The heat-conducting oil furnace is a heating device widely used in industries such as chemical engineering, petroleum, and textile. The control of the furnace temperature is crucial for the safe operation of the equipment. In the prior art, the furnace temperature is usually controlled by adjusting the fuel supply or the external cooling system, but these methods have the following problems: 1. The external cooling system has a slow response speed: the fuel regulation or the external cooling system cannot quickly respond to the temperature change; 2. Adjusting the temperature by adjusting the fuel supply also has a problem of slow response speed to a certain extent due to the good heat preservation effect of the furnace. Summary of the Invention

[0003] To solve the technical problems in the background art, the present invention proposes a coil-type heat-conducting oil furnace with adjustable temperature.

[0004] A coil-type heat-conducting oil furnace with adjustable temperature proposed by the present invention includes a furnace, an outer coil and an inner coil disposed in the furnace. One end of the furnace has the flame of a burner. Different from the prior art, it further includes a cooling flap installed in the furnace. An inner smoke guide channel is formed between the inner coil and the outer coil, and an outer smoke guide channel is formed between the outer coil and the inner wall of the furnace; The inner coil and the cooling flap form a combustion chamber. One end of the combustion chamber far from the flame in the combustion chamber has an air inlet communicating the combustion chamber and the inner smoke guide channel. One end of the inner smoke guide channel far from the air inlet has a diversion port, and the diversion port communicates the inner smoke guide channel and the outer smoke guide channel. An air outlet is opened on the side wall of the furnace, and the air outlet communicates with the outer smoke guide channel and discharges the gas formed in the combustion chamber; A cooling hole is opened at one end of the furnace close to the cooling flap, and a cooling chamber is formed between the furnace and the cooling flap; The cooling flap includes a mounting ring installed in the furnace and a closing plate installed on the mounting ring and used to close the middle through hole of the mounting ring; the closing plate has an open state and a closed state. Specifically, the outer diameter of the closing plate is smaller than the inner diameter of the combustion chamber, ensuring that the gas entering from the middle through hole of the mounting ring first enters the combustion chamber.

[0005] The combustible enters the combustion chamber through the side of the furnace far from the cooling flap for combustion. The heated flue gas passes through the combustion chamber, the inner flue gas passage, the outer flue gas passage, and then is discharged through the air outlet. When cooling is not required, the closing plate is in a closed state. When cooling is required, the closing plate is in an open state. By injecting gas into the cooling holes, external gas enters the combustion chamber, then passes through the inner flue gas passage, the outer flue gas passage, and is discharged through the air outlet, thereby achieving cooling and improving the cooling efficiency.

[0006] As a further optimized solution of the present invention, a first oil guide passage is provided inside the mounting ring. The oil outlet end of the inner coil is communicated with the oil guide passage, and the end of the oil guide passage is connected with an inner oil outlet pipe. The liquid in the inner coil is discharged through the inner coil, the oil guide passage, and the inner oil outlet pipe. Thereby, the gas in the combustion chamber and the inner flue gas passage heats the liquid in the first oil guide passage, and then cools the discharged flue gas.

[0007] As a further optimized solution of the present invention, the mounting ring is installed on the inner wall of the outer coil.

[0008] As a further optimized solution of the present invention, the first oil guide passage is spiral. Thereby increasing the cooling effect on the discharged flue gas.

[0009] As a further optimized solution of the present invention, a rotating shaft is rotatably provided on the outer wall of the furnace. The rotating shaft has a part extending outside the furnace. A transmission mechanism is provided between the rotating shaft and the closing plate. Rotating the rotating shaft drives the closing plate to move through the transmission mechanism and makes the closing plate in an open state or a closed state.

[0010] As a further optimized solution of the present invention, the transmission mechanism includes a driving gear rotatably installed on the mounting ring through the rotating shaft. One end of the closing plate far from the combustion chamber has a rack, and the rack meshes with the gear. Rotating the gear drives the rack to move linearly, thereby driving the closing plate to act.

[0011] As a further optimized solution of the present invention, a rotating wheel is installed on the part of the rotating shaft extending outside the furnace. Thereby facilitating the operation of rotating the rotating shaft.

[0012] Furthermore, in order to prevent high temperature from scalding the staff, the rotating wheel is covered with a heat insulation layer.

[0013] As a further optimized solution of the present invention, an extended inner ring is provided at one end of the inner wall of the furnace close to the transmission mechanism, and the outer coil is installed on the extended inner ring.

[0014] As a further optimized solution of the present invention, it further includes a front retaining ring installed on the furnace. The front retaining ring faces the inner smoke guiding channel and the outer smoke guiding channel. The front retaining ring is detachably installed on the furnace, and the inner coil is installed on the front retaining ring.

[0015] As a further optimized solution of the present invention, the front retaining ring has a second oil guiding channel inside. The liquid outlet of the outer coil is communicated with the second oil guiding channel. An external liquid outlet pipe is provided on the front retaining ring, and the external liquid outlet pipe is used to discharge the liquid in the outer coil.

[0016] As a further optimized solution of the present invention, the second oil guiding channel is spiral.

[0017] In the present invention, for the coil-type heat transfer oil furnace with adjustable temperature, through the setting of the cooling flap, when cooling treatment is required, the cooling efficiency is increased to a certain extent. Further, due to the setting of the first oil guiding channel, and when the closing plate is in the closed state, the temperature of the flue gas in the furnace is higher than the temperature of the liquid in the inner coil, thereby reducing the temperature of the flue gas discharged from the air outlet. When the sealing plate is in the open state, the cooling efficiency is increased.

[0018] The additional aspects and advantages of the present invention will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a sectional view of the present invention; Figure 3 is a sectional view of the mounting ring of the present invention; Figure 4 is a sectional view of the front retaining ring of the present invention; Figure 5 is a schematic structural diagram of the connection between the sealing plate and the mounting ring of the present invention; In the figure: 1, furnace; 10, cylinder; 11, sealing plate; 100, inner smoke guiding channel; 101, outer smoke guiding channel; 102, combustion chamber; 103, air inlet; 104, air outlet; 105, cooling hole; 106, cooling chamber; 107, extended inner ring; 108, diversion port; 2, cooling flap; 20, mounting ring; 200, first oil guiding channel; 21, closing plate; 3, inner coil; 4, outer coil; 40, extended block; 5, inner liquid outlet pipe; 6, rotating shaft; 7, driving gear; 8, rack; 9, right-angle limiting bar; 12, rotating wheel; 13, front retaining ring; 130, second oil guiding channel; 14, external liquid outlet pipe; 15, burner; 16, moving block. DETAILED DESCRIPTION OF THE INVENTION

[0020] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference signs denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0021] As Figures 1-5 shown, a coil-type heat-conducting oil furnace with adjustable temperature includes a furnace chamber 1, an outer coil 4 and an inner coil 3 arranged in the furnace chamber 1. There is a flame of a burner 15 at one end of the furnace chamber 1. It also includes a cooling flap 2 installed in the furnace chamber 1. An inner smoke guide channel 100 is formed between the inner coil 3 and the outer coil 4, and an outer smoke guide channel 101 is formed between the outer coil 4 and the inner wall of the furnace chamber 1. The inner coil 3 and the cooling flap 2 form a combustion chamber 102. One end of the combustion chamber 102 far from the flame in the combustion chamber 102 has an air inlet 103 that communicates the combustion chamber 102 with the inner smoke guide channel 100. One end of the inner smoke guide channel 100 far from the air inlet 103 has a diversion port 108, and the diversion port 108 communicates with the outer smoke guide channel 101. An air outlet 104 is opened on the side wall of the furnace chamber 1, and the air outlet 104 communicates with the outer smoke guide channel 101 and discharges the gas formed in the combustion chamber 102. A cooling hole 105 is opened at one end of the furnace chamber 1 close to the cooling flap 2. An external intake pipe can input cooling gas into the cooling hole 105 through communication with the cooling hole 105, and a valve can be provided on the intake pipe. A cooling chamber 106 is formed between the furnace chamber 1 and the cooling flap 2. The cooling flap 2 includes a mounting ring 20 installed in the furnace chamber 1 and a closing plate 21 installed on the mounting ring 20 and used to close the middle through-hole of the mounting ring 20. The closing plate 21 has an open state and a closed state. When the closing plate 21 is in the open state, cooling gas is introduced into the combustion chamber 102 through the intake pipe and the middle through-hole.

[0022] Specifically, the outer diameter of the closing plate 21 is smaller than the inner diameter of the combustion chamber 102, ensuring that the gas entering from the middle through-hole of the mounting ring 20 first enters the combustion chamber 102, and then is discharged from the air outlet 104 through the inner smoke guide channel 100 and the outer smoke guide channel 101, thereby enhancing the cooling effect.

[0023] The combustible enters the combustion chamber 102 through the side of the furnace chamber 1 away from the cooling flap 2 for combustion. The heated flue gas passes through the combustion chamber 102, the inner flue gas passage 100, the outer flue gas passage 101 and is discharged through the air outlet 104. When cooling is not required, the closing plate 21 is in a closed state. When cooling is required, the closing plate 21 is in an open state, and gas is blown into the cooling holes 105 through the inlet pipe to allow external gas to enter the cooling chamber 106 and the combustion chamber 102, and then passes through the inner flue gas passage 100, the outer flue gas passage 101 and is discharged through the air outlet 104, thereby achieving temperature reduction and improving the cooling efficiency.

[0024] Preferably, a first oil guiding channel 200 is provided inside the mounting ring 20. The oil outlet end of the inner coil 3 is communicated with the first oil guiding channel 200. The inner coil 3 can be communicated with the first oil guiding channel 200 by welding. The end of the first oil guiding channel 200 is connected with an inner liquid outlet pipe 5. The liquid in the inner coil 3 is discharged through the inner coil 3, the first oil guiding channel 200 and the inner liquid outlet pipe 5. Furthermore, when the closing plate 21 is in a closed state, the gas in the combustion chamber 102 and the inner flue gas passage 100 heats the liquid in the first oil guiding channel 200, thereby cooling the discharged flue gas. When the closing plate 21 is in an open state, the liquid in the first oil guiding channel 200 is cooled.

[0025] When it is necessary to heat the liquid in the inner coil 3, the high-temperature flue gas in the inner combustion chamber 102 impacts the mounting ring 20 to heat the liquid in the first oil guiding channel 200, thereby increasing the heating efficiency and reducing the temperature of the flue gas discharged from the air outlet 104. At the same time, when cooling is required, the gas discharged through the inlet pipe cools the two end faces of the mounting ring 20, thereby enhancing the cooling effect.

[0026] Similar to the existing furnace chamber 1, the furnace chamber 1 includes a cylinder body 10 and sealing plates 11 installed at both ends of the cylinder body 10. A burner 15 is installed on one of the sealing plates 11. The flame generated by the burner 15 enters the combustion chamber 102. An air inlet 103 is provided on the other sealing plate 11. A cooling chamber 106 is formed between the sealing plate 11, the cylinder body 10 and the cooling flap 2. When cooling, the gas in the inlet pipe is discharged into the cooling chamber 106 and impacts the cooling flap 2 and then enters the combustion chamber 102.

[0027] To further enhance the cooling effect, the mounting ring 20 is installed on the inner wall of the outer coil 4. Specifically, the inner wall of the outer coil 4 has an extension block 40, and the mounting ring 20 is fixed on the extension block 40 by welding or fixing bolts.

[0028] Preferably, the first oil guiding channel 200 is spiral, thereby enhancing the cooling effect on the discharged flue gas.

[0029] Specifically, a rotating shaft 6 is rotatably provided on the outer wall of the furnace chamber 1 through bearings. The rotating shaft 6 has a portion extending outside the furnace chamber 1. A transmission mechanism is provided between the rotating shaft 6 and the closing plate 21. Rotating the rotating shaft 6 drives the closing plate 21 through the transmission mechanism to make the closing plate 21 in an open state or a closed state.

[0030] Specifically, the transmission mechanism includes a driving gear 7 rotatably mounted on the mounting ring 20 through the rotating shaft 6. One end of the closing plate 21 away from the combustion chamber 102 has a rack 8. Specifically, one end of the closing plate 21 away from the combustion chamber 102 has a moving block 16. The moving block 16 can be a prism. In this embodiment, the moving block 16 is a quadrangular prism. The rack 8 is installed on one side of the quadrangular prism. The rack 8 meshes with the gear. Rotating the gear drives the rack 8 to move linearly and then drives the closing plate 21 to act. The end face of the prism is larger than the end face of the sealing plate 11. Preferably, the cross-sectional area of the sealing plate 11 gradually increases from the end close to the combustion chamber 102 to the end away from the combustion chamber 102. The middle through hole of the mounting ring 20 is conical, and the taper of the middle through hole is equal to the taper of the sealing plate 11, and the maximum diameter of the sealing plate 11 is larger than the maximum aperture of the middle through hole, so as to ensure the sealing effect.

[0031] In order to limit the movement of the sealing plate 11, specifically, the mounting ring 20 is provided with right-angle limit strips 9. The inner side surfaces of the right-angle limit strips 9 match the two side surfaces adjacent to the moving block 16. There are two groups of right-angle limit strips 9, and the two groups of right-angle limit strips 9 are arranged oppositely, so as to limit the sealing plate 11 during the movement process.

[0032] Preferably, a rotating wheel 12 is installed on the portion of the rotating shaft 6 extending outside the furnace chamber 1. The rotating wheel 12 is fixed at one end of the rotating shaft 6, which is convenient for operating the rotating shaft 6.

[0033] Furthermore, in order to prevent the high temperature from scalding the staff, the rotating wheel 12 is covered with a heat insulation layer.

[0034] Preferably, one end of the inner wall of the cylinder body 10 of the furnace chamber 1 close to the transmission mechanism has an extended inner ring 107. The outer coil pipe 4 is installed on the extended inner ring 107. A cooling chamber 106 is formed between the extended inner ring 107, the cooling flap 2, the outer coil pipe 4, the sealing plate 11, and the cylinder body 10.

[0035] Preferably, it further includes a front retaining ring 13 installed on the inner side wall of the cylinder body 10 of the furnace chamber 1. The front retaining ring 13 is detachably installed on the inner side wall of the cylinder body 10 of the furnace chamber 1, and the inner coil 3 is installed on the front retaining ring 13. The front retaining ring 13 has a second oil guiding channel 130 inside. The liquid outlet of the outer coil 4 is communicated with the second oil guiding channel 130. Specifically, the liquid outlet end of the outer coil 4 can be connected to the front retaining ring 13 by welding. An external liquid outlet pipe 14 is provided on the front retaining ring 13, and the external liquid outlet pipe 14 is used to discharge the liquid in the outer coil 4. Preferably, the second oil guiding channel 130 is spiral. When the closing plate 21 is in the closed state, the cooling effect on the flue gas is further increased. When the closing plate 21 is in the open state, the cooling and temperature reduction effect is increased.

[0036] When the closing plate 21 is in the closed state, the flue gas in the combustion chamber 102 impacts the closing plate 21 and the mounting ring 20 and then enters the inner diversion channel. The gas in the inner diversion channel impacts the front retaining ring 13 and then enters the outer diversion channel and is discharged through the air outlet 104. When the closing plate 21 is in the open state, the external gas is discharged to the cooling chamber 106 through the air inlet pipe. The gas in the cooling chamber 106 enters the combustion chamber 102 through the middle through hole of the mounting ring 20 to cool the combustion chamber 102. The mixed gas in the combustion chamber 102 enters the outer smoke guiding channel 101 through the inner smoke guiding channel 100 and is discharged from the air outlet 104. Moreover, the gas in the combustion chamber 102 impacts the mounting ring 20, and the gas in the inner smoke guiding channel 100 impacts the front retaining ring 13, thereby increasing the cooling efficiency.

[0037] Preferably, the ends of the front retaining ring 13 and the mounting ring 20 opposite to the inner diversion channel are made of heat-conducting materials, and the ends of the front retaining ring 13 and the mounting ring 20 far from the inner diversion channel have heat-insulating layers to further ensure their heating or cooling effect.

[0038] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature.

[0042] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A coil-type heat-conducting oil furnace with adjustable temperature, comprising a furnace chamber, an outer coil and an inner coil arranged in the furnace chamber, and a flame of a burner at one end of the furnace chamber, characterized in that, It further includes a cooling flap installed in the furnace chamber. An inner smoke guiding channel is formed between the inner coil pipe and the outer coil pipe, and an outer smoke guiding channel is formed between the outer coil pipe and the inner wall of the furnace chamber; The inner coil pipe and the cooling flap form a combustion chamber. One end of the combustion chamber far from the flame in the combustion chamber has an air inlet connecting the combustion chamber and the inner smoke guiding channel. One end of the inner smoke guiding channel far from the air inlet has a diversion port, and the diversion port is connected to the outer smoke guiding channel. An air outlet is formed on the side wall of the furnace chamber, and the air outlet is connected to the outer smoke guiding channel and discharges the gas formed in the combustion chamber; A cooling chamber is formed between the furnace chamber and the cooling flap. A cooling hole is formed at one end of the furnace chamber close to the cooling flap; The cooling flap includes a mounting ring installed in the furnace chamber and a closing plate installed on the mounting ring and used for closing the middle through hole of the mounting ring; the closing plate has an open state and a closed state.

2. The coiled-tube type heat-conducting oil furnace with adjustable temperature according to claim 1, characterized in that, When the closing plate is in the open state, cooling gas is introduced into the combustion chamber through the cooling hole, the cooling chamber and the middle through hole.

3. The coil-type heat transfer oil furnace with adjustable temperature according to claim 1, characterized in that, A first oil guiding channel is arranged in the mounting ring. The oil outlet end of the inner coil pipe is communicated with the guiding channel, and the end of the guiding channel is connected with an inner oil outlet pipe. The liquid in the inner coil pipe is discharged through the inner coil pipe, the guiding channel and the inner oil outlet pipe.

4. The coil-type heat transfer oil furnace with adjustable temperature according to claim 3, characterized in that The mounting ring is installed on the inner wall of the outer coil pipe.

5. The coil-type heat transfer oil furnace with adjustable temperature according to claim 3, characterized in that, The first oil guiding channel is spiral.

6. The coil-type heat transfer oil furnace with adjustable temperature according to claim 1, wherein A rotating shaft is rotatably arranged on the outer wall of the furnace chamber. The rotating shaft has a part extending out of the furnace chamber. A transmission mechanism is arranged between the rotating shaft and the closing plate. Rotating the rotating shaft drives the closing plate to move through the transmission mechanism and makes the closing plate in the open state or the closed state.

7. The coiled-tube type heat-conducting oil furnace with adjustable temperature according to claim 6, wherein, The transmission mechanism includes a driving gear rotatably installed on the mounting ring through the rotating shaft. One end of the closing plate far from the combustion chamber has a rack, and the rack is engaged with the gear. Rotating the gear drives the rack to move linearly and then drives the closing plate to act.

8. The coil-type heat transfer oil furnace with adjustable temperature according to claim 7, characterized in that, A rotating wheel is installed on the part of the rotating shaft extending out of the furnace chamber.

9. The coil-type heat transfer oil furnace with adjustable temperature according to claim 1, wherein, It further includes a front retaining ring installed on the furnace chamber. The front retaining ring faces the inner smoke guiding channel and the outer smoke guiding channel. The front retaining ring is detachably installed on the furnace chamber, and the inner coil pipe is installed on the front retaining ring.

10. The coil-type heat transfer oil furnace with adjustable temperature according to claim 9, characterized in that, A second oil guiding channel is arranged in the front retaining ring. The liquid outlet of the outer coil pipe is communicated with the second oil guiding channel, and an outer liquid outlet pipe is arranged on the front retaining ring. The outer liquid outlet pipe is used for discharging the liquid in the outer coil pipe.

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