A coil-type temperature-adjustable thermal oil furnace

Abstract

The present invention relates to the technical field of heating devices, and discloses a coil-type temperature-adjustable thermal oil furnace, comprising a furnace, an outer coil and an inner coil arranged in the furnace, a burner flame at one end of the furnace, and a cooling flap installed in the furnace, a cooling cavity being formed between the furnace and the cooling flap, and a cooling hole being provided at one end of the furnace close to the cooling flap; the cooling flap comprises a mounting ring installed in the furnace and a closing plate mounted on the mounting ring and used to close the middle through hole of the mounting ring, the closing plate having an open state and a closed state. In the present invention, the proposed coil-type temperature-adjustable thermal oil furnace, through the provision of the cooling flap, increases the cooling efficiency to a certain extent when a cooling process is required.

Description

Technical Field

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

[0002] Thermal oil furnaces are a type of heating equipment widely used in the chemical, petroleum, and textile industries. Controlling furnace temperature is crucial for safe operation. Existing technologies typically control furnace temperature by adjusting the fuel supply or using an external cooling system. However, these methods suffer from the following issues: 1. Slow response of the external cooling system: Fuel regulation or the external cooling system cannot quickly respond to temperature changes; 2. Temperature regulation by adjusting the fuel supply, despite the excellent insulation of the furnace, also suffers from a certain degree of slowness. Summary of the Invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes a coil-type temperature-adjustable thermal oil furnace.

[0004] The present invention proposes a coil-type temperature-adjustable thermal oil furnace, comprising a furnace, an outer coil and an inner coil disposed within the furnace, a burner flame being provided at one end of the furnace, and unlike the prior art, a cooling flap mounted within the furnace, an inner smoke guide channel being formed between the inner coil and the outer coil, and an outer smoke guide channel being formed between the outer coil and the inner wall of the furnace;

[0005] The inner coil and the cooling flap form a combustion chamber, the combustion chamber has an air inlet at one end away from the flame in the combustion chamber, connecting the combustion chamber with the inner smoke guide channel, the inner smoke guide channel has a flow guide at one end away from the air inlet, the flow guide connects the inner smoke guide channel with the outer smoke guide channel, and the side wall of the furnace is provided with an air outlet, the air outlet is connected to the outer smoke guide channel and discharges the gas formed in the combustion chamber;

[0006] A cooling hole is formed at one end of the furnace close to the cooling flap, and a cooling cavity is formed between the furnace and the cooling flap;

[0007] The cooling flap includes a mounting ring mounted within the furnace and a sealing plate mounted on the mounting ring to seal the central through-hole of the mounting ring. The sealing plate has an open and closed state. Specifically, the outer diameter of the sealing plate is smaller than the inner diameter of the combustion chamber, ensuring that gas entering through the central through-hole of the mounting ring enters the combustion chamber first.

[0008] The combustible material enters the combustion chamber through the side of the furnace away from the cooling flap for combustion, and the heated flue gas passes through the combustion chamber, the inner smoke guide channel, and the outer smoke guide channel and 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 opened, and gas is blown into the cooling hole to allow external gas to enter the combustion chamber, and then passes through the inner smoke guide channel and the outer smoke guide channel and is discharged through the air outlet, thereby achieving cooling and improving cooling efficiency.

[0009] As a further optimization of the present invention, a first oil-conducting channel is defined within the mounting ring. The oil outlet end of the inner coil is connected to the channel, and the end of the channel is connected to an inner oil outlet pipe. Liquid in the inner coil is discharged through the inner coil, the oil-conducting channel, and the inner oil outlet pipe. Gas in the combustion chamber and the inner smoke-conducting channel heats the liquid in the first oil-conducting channel, thereby cooling the exhaust smoke.

[0010] As a further optimized solution of the present invention, the mounting ring is mounted on the inner wall of the outer coil.

[0011] As a further optimized solution of the present invention, the first oil guide channel is spiral-shaped, thereby increasing the cooling effect on the exhaust flue gas.

[0012] As a further optimized solution of the present invention, a rotating shaft is provided on the outer wall of the furnace, and the rotating shaft has a portion extending out of the furnace. A transmission mechanism is provided between the rotating shaft and the closing plate. The rotating shaft drives the closing plate to move through the transmission mechanism to place the closing plate in an open state or a closed state.

[0013] As a further optimized solution of the present invention, the transmission mechanism includes a driving gear installed on the mounting ring through the rotating shaft, and the closing plate has a rack at the end away from the combustion chamber. The rack is engaged with the gear, and rotating the gear drives the rack to move linearly and then drives the closing plate to move.

[0014] As a further optimized solution of the present invention, a rotating wheel is installed on the portion of the rotating shaft extending outside the furnace, thereby facilitating the operation of rotating the rotating shaft.

[0015] Furthermore, in order to prevent workers from being burned by high temperatures, the rotating wheel is coated with a heat insulation layer.

[0016] As a further optimized solution of the present invention, the inner wall of the furnace has an extended inner ring at one end close to the transmission mechanism, and the outer coil is installed on the extended inner ring.

[0017] As a further optimized solution of the present invention, it also includes a front baffle ring installed on the furnace, the front baffle ring is opposite to the inner smoke guide channel and the outer smoke guide channel, the front baffle ring is detachably installed on the furnace, and the inner coil is installed on the front baffle ring.

[0018] As a further optimized solution of the present invention, a second oil guide channel is provided in the front baffle ring, the liquid outlet of the outer coil is connected to the second oil guide channel, and an outgoing liquid pipe is provided on the front baffle ring, which is used to discharge the liquid in the outer coil.

[0019] As a further optimized solution of the present invention, the second oil guiding channel is spiral.

[0020] In the present invention, the proposed coil-type temperature-adjustable thermal oil furnace increases the cooling efficiency to a certain extent when cooling treatment is required through the setting of the cooling flap; further, due to the setting of the first oil conduction channel, and when the closing plate is in a closed state, the temperature of the flue gas in the furnace is greater than the temperature of the liquid in the inner coil, thereby reducing the temperature of the flue gas discharged from the outlet; when the sealing plate is in an open state, the cooling efficiency is increased.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a cross-sectional view of the present invention;

[0024] Figure 3 It is a cross-sectional view of the installation ring of the present invention;

[0025] Figure 4 This is a cross-sectional view of the front baffle ring of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the sealing plate and the mounting ring of the present invention;

[0027] In the figure: 1. furnace; 10. cylinder; 11. sealing plate; 100. inner smoke guide channel; 101. outer smoke guide channel; 102. combustion chamber; 103. air inlet; 104. air outlet; 105. cooling hole; 106. cooling chamber; 107. extended inner ring; 108. guide port; 2. cooling flap; 20. mounting ring; 200. first oil guide channel; 21. closing plate; 3. inner coil; 4. outer coil; 40. extension block; 5. inner liquid outlet pipe; 6. rotating shaft; 7. driving gear; 8. rack; 9. right-angle limit strip; 12. rotating wheel; 13. front baffle ring; 130. second oil guide channel; 14. liquid outlet pipe; 15. burner; 16. moving block. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention, and are not to be construed as limiting the present invention.

[0029] like Figure 1-Figure 5 The illustrated coil-type temperature-adjustable thermal oil furnace comprises a furnace 1, an outer coil 4 and an inner coil 3 disposed within the furnace 1, a burner 15 having a flame at one end thereof, and a cooling flap 2 mounted within the furnace 1. An inner smoke guide channel 100 is formed between the inner coil 3 and the outer coil 4, while an outer smoke guide channel 101 is formed between the outer coil 4 and the inner wall of the furnace 1.

[0030] The inner coil 3 and the cooling flap 2 form a combustion chamber 102. The combustion chamber 102 has an air inlet 103 at one end away from the flame in the combustion chamber 102, which connects the combustion chamber 102 with the inner smoke guide channel 100. The inner smoke guide channel 100 has a flow guide 108 at one end away from the air inlet 103. The flow guide 108 is connected to the outer smoke guide channel 101. The side wall of the furnace 1 has an air outlet 104, which is connected to the outer smoke guide channel 101 and discharges the gas formed in the combustion chamber 102.

[0031] A cooling hole 105 is provided at one end of the furnace 1 near the cooling flap 2. An external air inlet pipe can be connected to the cooling hole 105 to input cooling gas into the cooling hole 105. A valve can be provided on the air inlet pipe to form a cooling cavity 106 between the furnace 1 and the cooling flap 2.

[0032] The cooling flap 2 includes a mounting ring 20 installed in the furnace 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 air inlet pipe and the middle through hole.

[0033] 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 increasing the cooling effect.

[0034] The combustible material enters the combustion chamber 102 through the side of the furnace 1 away from the cooling flap 2 for combustion, and the heated flue gas passes through the combustion chamber 102, the inner smoke guide channel 100, and the outer smoke guide channel 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 opened, and gas is blown into the cooling hole 105 through the air inlet pipe to allow external gas to enter the cooling chamber 106 and the combustion chamber 102, and then passes through the inner smoke guide channel 100 and the outer smoke guide channel 101 and is discharged through the air outlet 104, thereby achieving cooling and improving cooling efficiency.

[0035] Preferably, the mounting ring 20 defines a first oil-conducting channel 200. The oil outlet end of the inner coil 3 communicates with the first oil-conducting channel 200. The inner coil 3 can be welded to the first oil-conducting channel 200. The end of the first oil-conducting channel 200 is connected to an internal liquid outlet pipe 5. Liquid in the inner coil 3 is discharged through the inner coil 3, the first oil-conducting channel 200, and the internal liquid outlet pipe 5. Furthermore, when the sealing plate 21 is in a closed state, the gas in the combustion chamber 102 and the inner smoke-conducting channel 100 heats the liquid in the first oil-conducting channel 200, thereby cooling the exhaust flue gases. When the sealing plate 21 is in an open state, the liquid in the first oil-conducting channel 200 is cooled.

[0036] When it is necessary to heat the liquid in the inner coil 3, the high-temperature flue gas from the inner combustion chamber 102 impacts the mounting ring 20 to heat the liquid in the first oil guide 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 air inlet pipe cools the two end faces of the mounting ring 20, thereby increasing the cooling effect.

[0037] Like the existing furnace 1, the furnace 1 includes a cylinder 10 and sealing plates 11 installed at both ends of the cylinder 10. A burner 15 is installed on the sealing plate 11 at one end, and the flame generated by the burner 15 enters the combustion chamber 102. The sealing plate 11 at the other end opens an air inlet 103. A cooling chamber 106 is formed between the sealing plate 11, the cylinder 10 and the cooling flap 2. When cooling is performed, the gas in the intake pipe is discharged into the cooling chamber 106 and is discharged into the combustion chamber 102 after impacting the cooling flap 2.

[0038] In order to further increase 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 to the extension block 40 by welding or fixing bolts.

[0039] Preferably, the first oil guide channel 200 is spiral-shaped, thereby increasing the cooling effect on the exhaust flue gas.

[0040] Specifically, a rotating shaft 6 is provided on the outer wall of the furnace 1 through a bearing, and the rotating shaft 6 has a portion extending out of the furnace 1. A transmission mechanism is provided between the rotating shaft 6 and the closing plate 21. The rotating shaft 6 drives the closing plate 21 to move through the transmission mechanism to make the closing plate 21 in an open state or a closed state.

[0041] Specifically, the transmission mechanism includes a driving gear 7 that is rotatably mounted on the mounting ring 20 via a rotating shaft 6. The end of the closing plate 21 away from the combustion chamber 102 has a rack 8. Specifically, the 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 mounted on one side of the quadrangular prism. The rack 8 is engaged with the gear. The rotating gear drives the rack 8 to move linearly, thereby driving the closing plate 21 to move. 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. The maximum diameter of the sealing plate 11 is larger than the maximum aperture of the middle through hole, thereby ensuring the sealing effect.

[0042] In order to limit the movement of the sealing plate 11, specifically, the mounting ring 20 is provided with a right-angle limit strip 9, the inner side surface of the right-angle limit strip 9 matches the two adjacent side surfaces of the moving block 16, and there are two groups of right-angle limit strips 9, and the two groups of right-angle limit strips 9 are arranged opposite to each other, thereby limiting the movement of the sealing plate 11.

[0043] Preferably, a rotating wheel 12 is installed on the portion of the rotating shaft 6 extending out of the furnace 1 , and the rotating wheel 12 is fixed to one end of the rotating shaft 6 , thereby facilitating the operation of rotating the rotating shaft 6 .

[0044] Furthermore, in order to prevent workers from being burned by high temperatures, the rotating wheel 12 is covered with a heat insulation layer.

[0045] Preferably, the inner wall of the cylinder 10 of the furnace 1 has an extended inner ring 107 at one end close to the transmission mechanism, and the outer coil 4 is installed on the extended inner ring 107. A cooling cavity 106 is formed between the extended inner ring 107, the cooling flap 2, the outer coil 4, the sealing plate 11, and the cylinder 10.

[0046] Preferably, the furnace 1 further includes a front baffle ring 13 mounted on the inner sidewall of the barrel 10 of the furnace 1. The front baffle ring 13 is detachably mounted on the inner sidewall of the barrel 10 of the furnace 1, and the inner coil 3 is mounted on the front baffle ring 13. A second oil guide channel 130 is defined within the front baffle ring 13, and the liquid outlet of the outer coil 4 is connected to the second oil guide channel 130. Specifically, the liquid outlet of the outer coil 4 can be connected to the front baffle ring 13 by welding. The front baffle ring 13 is provided with an outgoing liquid pipe 14 for draining the liquid from the outer coil 4. Preferably, the second oil guide channel 130 is spiral. When the sealing plate 21 is closed, the flue gas cooling effect is further enhanced, while when the sealing plate 21 is open, the cooling effect is enhanced.

[0047] 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 enters the inner guide channel. The gas in the inner guide channel impacts the front baffle ring 13 and enters the outer guide channel and is discharged through the gas outlet 104.

[0048] When the closing plate 21 is in the open state, the external gas is discharged to the cooling chamber 106 through the air intake pipe, and the gas in the cooling chamber 106 enters the combustion chamber 102 through the middle through hole of the mounting ring 20, thereby cooling the combustion chamber 102. The mixed gas in the combustion chamber 102 enters the outer smoke guide channel 101 through the inner smoke guide channel 100 and is discharged from the air outlet 104. The gas in the combustion chamber 102 impacts the mounting ring 20, and the gas in the inner smoke guide channel 100 impacts the front baffle ring 13, thereby increasing the cooling efficiency.

[0049] Preferably, the ends of the front baffle ring 13 and the mounting ring 20 opposite to the inner guide channel are made of heat-conducting material, and the ends of the front baffle ring 13 and the mounting ring 20 away from the inner guide channel have an insulating layer to further ensure their heating or cooling effects.

[0050] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections, or communication; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coil-type temperature-adjustable thermal oil furnace, comprising a furnace, an outer coil and an inner coil arranged in the furnace, a burner flame at one end of the furnace, characterized in that: Also included is a cooling flap installed in the furnace, wherein 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, the combustion chamber has an air inlet at one end away from the flame in the combustion chamber, connecting the combustion chamber and the inner smoke guide channel, the inner smoke guide channel has a flow guide at one end away from the air inlet, the flow guide is connected to the outer smoke guide channel, and the side wall of the furnace is provided with an air outlet, the air outlet is connected to the outer smoke guide channel and discharges the gas formed in the combustion chamber; A cooling cavity is formed between the furnace and the cooling flap, and a cooling hole is opened at one end of the furnace close to the cooling flap; The cooling flap comprises a mounting ring mounted in the furnace and a closing plate mounted 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; When the closing plate is in an open state, cooling gas is introduced into the combustion chamber through the cooling holes, the cooling cavity and the middle through hole; The mounting ring has a first oil guide channel, the oil outlet end of the inner coil is connected to the oil guide channel, the end of the oil guide channel is connected to the inner oil outlet pipe, and the liquid in the inner coil is discharged through the inner coil, the oil guide channel and the inner oil outlet pipe.

2. The coil-type temperature-adjustable thermal oil furnace according to claim 1, characterized in that: The mounting ring is mounted on the inner wall of the outer coil.

3. The coil-type temperature-adjustable thermal oil furnace according to claim 1, characterized in that: The first oil guide channel is spiral-shaped.

4. The coil-type temperature-adjustable thermal oil furnace according to claim 1, characterized in that: The outer wall of the furnace is rotatably provided with a rotating shaft, and the rotating shaft has a portion extending out of the furnace. A transmission mechanism is provided between the rotating shaft and the closing plate. The rotating shaft drives the closing plate to move through the transmission mechanism to place the closing plate in an open state or a closed state.

5. The coil-type temperature-adjustable thermal oil furnace according to claim 4, characterized in that: The transmission mechanism includes a driving gear mounted on the mounting ring through the rotating shaft. The end of the closing plate away 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 move.

6. The coil-type temperature-adjustable thermal oil furnace according to claim 5, characterized in that: A rotating wheel is installed on the portion of the rotating shaft extending out of the furnace.

7. The coil-type temperature-adjustable thermal oil furnace according to claim 1, characterized in that: It also includes a front baffle ring installed on the furnace, the front baffle ring is opposite to the inner smoke guide channel and the outer smoke guide channel, the front baffle ring is detachably installed on the furnace, and the inner coil is installed on the front baffle ring.

8. The coil-type temperature-adjustable thermal oil furnace according to claim 7, characterized in that: The front baffle ring has a second oil guide channel, the liquid outlet of the outer coil is connected to the second oil guide channel, and the front baffle ring is provided with an outgoing liquid pipe, which is used to discharge the liquid in the outer coil.

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