Nitrogen preheating structure

Abstract

The utility model belongs to the technical field of preheating structures, and particularly relates to a nitrogen preheating structure which comprises a bottom cabin, an oil tank arranged in the bottom cabin, an electric heating pipe arranged at the top of the oil tank, an oil pump arranged in the bottom cabin, an oil outlet end of the oil pump connected with an output pipe, and a return pipe connected with the top of the oil tank. The top of the bottom cabin is provided with a preheating cabin, the side wall of the preheating cabin penetrates through and is rotatably provided with a cabin door, a fixing support is fixedly arranged in the preheating cabin, the side face of the fixing support is connected with a second threaded connection plate, the inner side of the preheating cabin is further provided with a spiral gas conveying pipe, and the outer side of the spiral gas conveying pipe is sleeved with a spiral preheating pipe; according to the device, heat exchange is conducted through heat conduction oil, and the heat conduction oil flows in an interlayer between the spiral preheating pipe and the spiral gas conveying pipe, so that heat of hot oil can be fully, rapidly and evenly absorbed by nitrogen, the heating pressure of the electric heating pipe is reduced, and the energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to preheating structure technical field, concretely relates to a nitrogen preheating structure. BACKGROUND

[0002] Nitrogen preheating is an important process link in industrial production, which refers to the process of raising the temperature of nitrogen to the required operating conditions before it enters specific equipment or participates in reactions through heating devices. This process aims to optimize process conditions, improve production efficiency or ensure safe operation of equipment, and is widely used in chemical, metallurgical, electronic, food and other fields.

[0003] The utility model discloses a kind of nitrogen preheating structures of CN222123490U Chinese utility model patent, it is filled with hot water by preheating tank to heat exchange nitrogen in preheating pipe, play the preheating effect to nitrogen, but its use preheating tank filled with hot water mode, need there is a large amount of hot water in tank body simultaneously, like this can bring following problems, although it is provided with impeller for driving hot water stirring, quite a part of hot water cannot be continuously contacted with preheating pipe, lead to part of heat cannot be utilized, many heat will be lost with the contact heat exchange of tank wall and ambient air, simultaneously to maintain the temperature of large amount of water in tank body, heater needs to work with greater heating power again, so that energy consumption is higher in the process of equipment operation. UTILITY MODEL CONTENTS

[0004] For the above problems, the purpose of the utility model is to provide a nitrogen preheating structure, heat exchange is carried out by using heat-conducting oil, and the heat-conducting oil flows in the interlayer between the spiral preheating pipe and the spiral gas conveying pipe. Therefore, the heat of the heat-conducting oil can be fully, quickly and uniformly absorbed by the nitrogen. The total amount of oil used for direct heat exchange with the spiral gas conveying pipe inside the spiral preheating pipe is small at the same time. The oil tank maintains a high oil level, so that the oil temperature inside the oil tank remains at a high level. In turn, the heating pressure of the electric heating pipe is reduced, which plays a role in energy saving.

[0005] In order to achieve the above object, the utility model provides following technical scheme: a nitrogen preheating structure, including bottom cabin, the inside installation of bottom cabin has oil tank, the top of oil tank is equipped with electric heating tube, the inside of bottom cabin is equipped with oil pump, oil pump is connected between oil tank, the oil outlet end of oil pump is connected with output pipe, the top of oil tank is connected with backflow pipe, the top of bottom cabin is equipped with preheating cabin, the side wall of preheating cabin is penetrated and is rotatably installed with cabin door, the inside fixed of preheating cabin is equipped with fixed support, the side of fixed support is connected with second screw plate, the inside of preheating cabin is also equipped with helical gas delivery pipe, the outside of helical gas delivery pipe is equipped with helical preheating pipe, both ends of helical gas delivery pipe are equipped with flange plate, the both ends side of helical preheating pipe is connected with oil inlet pipe, oil outlet pipe respectively, the inside helical side of helical preheating pipe is connected with fixed connecting rod, one end of fixed connecting rod is connected with first screw plate, between first screw plate, second screw plate is fixed through bolt.

[0006] The utility model discloses the beneficial effect is: in the heat conduction oil in the oil tank inside completes heating, nitrogen is introduced from the air inlet pipe into helical gas delivery pipe, nitrogen flows from the bottom of helical gas delivery pipe to the direction of exhaust pipe along the passageway in helical gas delivery pipe, in this process, the hot oil in helical preheating pipe flows from top to bottom, and the helical gas delivery pipe is formed completely by the hot oil, so it can be in full contact with the surface of helical gas delivery pipe, and the heat is conducted to the helical gas delivery pipe, and the nitrogen in the helical gas delivery pipe is heated, because the shape of helical preheating pipe, helical gas delivery pipe all adopts helical shape, so the inside has longer path, makes nitrogen can absorb the heat in hot oil fully, carries out effective preheating, and because the heat conduction oil flows in the interlayer between helical preheating pipe, helical gas delivery pipe, so the heat of hot oil can be absorbed fully, quickly and evenly by nitrogen, and the total oil amount for direct heat exchange with helical gas delivery pipe in the helical preheating pipe is also smaller in the same time, makes the oil amount in the oil tank keep higher, thereby the oil temperature in the oil tank keeps higher level, further reduces the heating pressure of electric heating tube, plays the role of energy saving.

[0007] In order to reduce the heat loss in the preheating process:

[0008] As a further improvement of the above technical solution: the inside of preheating cabin and cabin door is equipped with heat preservation layer.

[0009] The beneficial effect of the improvement is that the inside of the preheating cabin and the cabin door is equipped with a heat preservation layer, thereby reducing the heat loss in the preheating process.

[0010] In order to move and deploy the device:

[0011] As a further improvement of the above technical solution: the bottom of the bottom cabin is equipped with universal wheels.

[0012] The beneficial effect of this improvement is that the casters are used for the mobile deployment of this device.

[0013] As a further improvement to the above technical solution: an inspection door is provided at the rear of the bottom compartment.

[0014] The inspection door is used for inspecting and maintaining the fuel tanks and pumps inside the lower deck.

[0015] As a further improvement to the above technical solution: the two ends of the spiral gas pipeline are connected to the inlet pipe and the exhaust pipe respectively through flanges, and both the inlet pipe and the exhaust pipe extend out of the outside of the preheating chamber.

[0016] When nitrogen needs to be preheated, connect the nitrogen source pipe to the inlet pipe and the exhaust pipe to the pipe of the gas-using equipment.

[0017] For the circulation of oil flow:

[0018] As a further improvement to the above technical solution: one end of the oil inlet pipe is connected to one end of the output pipe, and one end of the oil outlet pipe is connected to one end of the return pipe.

[0019] The oil pump pumps the hot oil out of the oil tank and delivers it into the oil inlet pipe through the output pipe, so that the hot oil enters the spiral preheating pipe. The hot oil in the spiral preheating pipe is discharged into the return pipe through the oil drain pipe and finally flows back into the oil tank for reheating.

[0020] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0021] Figure 1 This is an isometric structural diagram of the present invention when the hatch is open;

[0022] Figure 2 This is an isometric schematic diagram of the present invention;

[0023] Figure 3 This is a cross-sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of the rear structure of the present invention;

[0025] Figure 5 This is a partial cross-sectional view of the present invention;

[0026] Figure 6 This is a cross-sectional schematic diagram of the spiral preheating tube in this utility model;

[0027] Figure 7 This is a schematic diagram showing the connection between the spiral preheating pipe and the fixed bracket in this utility model;

[0028] Figure: 1, the bottom tank; 2, oil tank; 3, electric heating tube; 4, oil pump; 5, output pipe; 6, return pipe; 7, preheating tank; 8, hatch; 9, insulation layer; 10, spiral preheating pipe; 11, spiral gas pipe; 12, flange; 13, air inlet pipe; 14, exhaust pipe; 15, oil inlet pipe; 16, oil outlet pipe; 17, fixed connecting rod; 18, the first screw plate; 19, fixed support; 20, the second screw plate; 21, universal wheel; 22, access door. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0030] As shown in Figures 1-7 A nitrogen preheating structure, comprising a bottom tank 1, an oil tank 2 is installed inside the bottom tank 1, an electric heating tube 3 is installed on the top of the oil tank 2, an oil pump 4 is arranged inside the bottom tank 1, the oil pump 4 is connected between the oil tank 2, the oil outlet end of the oil pump 4 is connected with the output pipe 5, the top of the oil tank 2 is connected with the return pipe 6, the top of the bottom tank 1 is provided with a preheating tank 7, the side wall of the preheating tank 7 is provided with a hatch 8 which is rotatably installed, the inside of the preheating tank 7 is fixedly provided with a fixed support 19, the side of the fixed support 19 is connected with a second screw plate 20, the inside of the preheating tank 7 is also provided with a spiral gas pipe 11, the outside of the spiral gas pipe 11 is sleeved with a spiral preheating pipe 10, both ends of the spiral gas pipe 11 are provided with flanges 12, the two ends of the spiral preheating pipe 10 are respectively connected with an oil inlet pipe 15 and an oil outlet pipe 16, the inner spiral side of the spiral preheating pipe 10 is connected with a fixed connecting rod 17, one end of the fixed connecting rod 17 is connected with a first screw plate 18, the first screw plate 18 and the second screw plate 20 are fixed by bolts.

[0031] When the heat conducting oil inside the oil tank 2 is heated, nitrogen is introduced into the spiral gas conveying pipe 11 from the gas inlet pipe 13, and the nitrogen flows upwards along the path inside the spiral gas conveying pipe 11 towards the gas outlet pipe 14. In this process, the hot oil in the spiral preheating pipe 10 flows from top to bottom, and the hot oil completely wraps the spiral gas conveying pipe 11, so that it can fully contact the surface of the spiral gas conveying pipe 11 and conduct heat to the nitrogen inside the spiral gas conveying pipe 11. Since the spiral preheating pipe 10 and the spiral gas conveying pipe 11 are both spiral-shaped, they have a long internal path, so that the nitrogen can fully absorb the heat of the hot oil and be effectively preheated. At the same time, since the heat conducting oil flows in the interlayer between the spiral preheating pipe 10 and the spiral gas conveying pipe 11, the heat of the hot oil can be fully, quickly and uniformly absorbed by the nitrogen. At the same time, the total amount of oil inside the spiral preheating pipe 10 for direct heat exchange with the spiral gas conveying pipe 11 is small, so that the oil inside the oil tank 2 can maintain a high temperature, thereby reducing the heating pressure of the electric heating pipe 3 and achieving energy saving.

[0032] The inner side of the preheating cabin 7 and the cabin door 8 is provided with a heat preservation layer 9.

[0033] Since the inner side of the preheating cabin 7 and the cabin door 8 is provided with a heat preservation layer 9, the heat loss during preheating can be reduced.

[0034] The bottom of the bottom cabin 1 is provided with universal wheels 21.

[0035] The universal wheels 21 are used for the movement and deployment of the device.

[0036] The back of the bottom cabin 1 is provided with an access door 22.

[0037] The access door 22 is used for the maintenance of the oil tank 2 and the oil pump 4 inside the bottom cabin 1.

[0038] The two ends of the spiral gas conveying pipe 11 are connected with the gas inlet pipe 13 and the gas outlet pipe 14 through flanges 12, and the gas inlet pipe 13 and the gas outlet pipe 14 both pass through the outer side of the preheating cabin 7.

[0039] When nitrogen needs to be preheated, the nitrogen source pipe is connected with the gas inlet pipe 13, and the gas outlet pipe 14 is connected with the pipe of the gas using equipment.

[0040] One end of the oil inlet pipe 15 is connected with one end of the output pipe 5, and one end of the oil outlet pipe 16 is connected with one end of the return pipe 6.

[0041] The oil pump 4 pumps out the hot oil in the oil tank 2, and the hot oil is delivered into the inlet pipe 15 through the output pipe 5, and then the hot oil enters the spiral preheating pipe 10, and the hot oil in the spiral preheating pipe 10 is discharged into the return pipe 6 through the oil discharge pipe 16, and finally returns to the oil tank 2 for reheating.

[0042] The working principle and use process of the utility model: when the device is used, the parking position of the device can be moved through the universal wheel 21, when the nitrogen needs to be preheated, the nitrogen source pipeline is connected with the air inlet pipe 13, the exhaust pipe 14 is connected with the pipeline of the gas using equipment, the oil in the oil tank 2 is heated by controlling the electric heating pipe 3, the oil in the oil tank 2 is heated to the appropriate temperature, the oil pump 4 is controlled to pump out the hot oil in the oil tank 2, the hot oil is delivered into the inlet pipe 15 through the output pipe 5, the hot oil enters the spiral preheating pipe 10, the hot oil in the spiral preheating pipe 10 is discharged into the return pipe 6 through the oil discharge pipe 16, and finally returns to the oil tank 2 for reheating, forming a circulating oil circuit, after the heat conducting oil in the oil tank 2 is heated, the nitrogen is introduced into the spiral gas conveying pipe 11 from the air inlet pipe 13, the nitrogen flows upwards along the channel in the spiral gas conveying pipe 11 towards the direction of the exhaust pipe 14 from the bottom of the spiral gas conveying pipe 11, in this process, the hot oil in the spiral preheating pipe 10 flows from top to bottom, the hot oil completely wraps the spiral gas conveying pipe 11, so it can fully contact the surface of the spiral gas conveying pipe 11, and the heat is conducted to the spiral gas conveying pipe 11 to heat the nitrogen in the spiral gas conveying pipe 11, since the shapes of the spiral preheating pipe 10 and the spiral gas conveying pipe 11 are both spiral, the internal path is long, so the nitrogen can fully absorb the heat in the hot oil and be effectively preheated, since the heat conducting oil flows in the interlayer between the spiral preheating pipe 10 and the spiral gas conveying pipe 11, the heat of the hot oil can be fully, quickly and uniformly absorbed by the nitrogen, the total oil amount used for direct heat exchange with the spiral gas conveying pipe 11 in the spiral preheating pipe 10 is small at the same time, the oil amount in the oil tank 2 is kept high, so the oil temperature in the oil tank 2 is kept at a high level, thereby reducing the heating pressure of the electric heating pipe 3, achieving the energy saving effect, since the preheating cabin 7 and the cabin door 8 are internally provided with the heat preservation layer 9, the heat loss in the preheating process is reduced.

[0043] The circuit and electronic components and modules are all prior art, and those skilled in the art can realize them without further description, and the content protected by the application does not involve improvement of software and methods.

[0044] It should be noted that the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] The principles and implementation manners of the present application are described by using specific examples in the present application. The above example is only used to help understand the method and core idea of the present application. The above description is only the preferred implementation manner of the present application. It should be noted that due to the limited expression of the text, there are objectively infinite specific structures. For ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application. The above technical features can also be combined in an appropriate manner. These improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A nitrogen preheat structure, characterized by: The utility model provides an oil preheating device, which comprises a bottom cabin (1), an oil tank (2) is internally arranged in the bottom cabin (1), an electric heating pipe (3) is arranged on the top of the oil tank (2), an oil pump (4) is arranged in the bottom cabin (1), the oil pump (4) is connected with the oil tank (2), the oil outlet end of the oil pump (4) is connected with an output pipe (5), a backflow pipe (6) is connected to the top of the oil tank (2), a preheating cabin (7) is arranged on the top of the bottom cabin (1), a cabin door (8) is rotatably arranged through the sidewall of the preheating cabin (7), a fixed support (19) is fixedly arranged in the preheating cabin (7), a second screw plate (20) is connected to the side of the fixed support (19), a spiral gas conveying pipe (11) is further arranged in the preheating cabin (7), a spiral preheating pipe (10) is arranged on the outer side of the spiral gas conveying pipe (11), flanges (12) are arranged at the two ends of the spiral gas conveying pipe (11), an oil inlet pipe (15) and an oil outlet pipe (16) are connected to the two ends of the spiral preheating pipe (10) respectively, a fixed connecting rod (17) is connected to the inner spiral side of the spiral preheating pipe (10), a first screw plate (18) is connected to one end of the fixed connecting rod (17), and the first screw plate (18) and the second screw plate (20) are fixed through bolts.

2. A nitrogen preheat structure according to claim 1, wherein: The inside of the preheating cabin (7) and the cabin door (8) is provided with a heat preservation layer (9).

3. The nitrogen preheat structure of claim 1, wherein: Universal wheels (21) are arranged on the bottom of the bottom cabin (1).

4. The nitrogen preheat structure of claim 1, wherein: An inspection door (22) is arranged on the back of the bottom cabin (1).

5. The nitrogen preheat structure of claim 1, wherein: The two ends of the spiral gas conveying pipe (11) are connected with an air inlet pipe (13) and an air outlet pipe (14) through the flanges (12), and the air inlet pipe (13) and the air outlet pipe (14) penetrate out of the outer side of the preheating cabin (7).

6. The nitrogen preheat structure of claim 1, wherein: One end of the oil inlet pipe (15) is connected with one end of the output pipe (5), and one end of the oil outlet pipe (16) is connected with one end of the backflow pipe (6).

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