A spiral plate heat exchanger for petrochemical industry

Abstract

The present invention discloses a spiral plate heat exchanger for petrochemical industry, and the present invention relates to the technical field of heat exchange equipment. The spiral plate heat exchanger for petrochemical industry includes a heat exchange tank and a heat exchange mechanism. A fuel inlet pipe is connected to the side of the bottom of the outer cylindrical surface of the heat exchange tank, and an oil outlet pipe is connected to the side of the top of the outer cylindrical surface of the heat exchange tank. A heating mechanism is installed in the middle of the heat exchange tank. The heat exchange mechanism includes a guide plate and strip-shaped holes. The guide plate is spiral and is installed in the middle of the interior of the heat exchange tank. The strip-shaped holes are opened at the spiral curved surface of the surface of the guide plate. A supporting square rod is fixedly connected to the surface of the guide plate and near the fuel inlet pipe, and a diamond-shaped cutting piece is fixedly installed at the end of the supporting square rod away from the guide plate. An arc-shaped blade is fixedly connected to the surface of the guide plate and near the strip-shaped holes, achieving the purpose of uniform heating, smooth fluid flow, not easily occurring the situation of fluid blockage, increasing the heat transfer time, and having good heat exchange effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly to a spiral plate heat exchanger for petrochemical industry. Background Art

[0002] Petrochemical industry, that is, petrochemical industry, refers to the processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products. Petrochemical products are one of the main energy sources in modern society, providing power and heat support for transportation, industrial production, residential life, etc. Nowadays, with the increasing use of petroleum, the petrochemical industry has also developed rapidly. The spiral plate heat exchanger is an efficient heat exchange equipment, which is widely used in industries such as chemical industry, petroleum, pharmacy, and food. The spiral plate heat exchanger realizes heat transfer by flowing the fluid inside the spiral plate. The working principle of the spiral plate heat exchanger is based on the flow of the fluid inside the spiral plate. When the hot and cold fluids pass through the heat exchanger, they enter two different channels of the spiral plate respectively. The hot and cold fluids flow crosswise inside the spiral plate, thus realizing heat transfer.

[0003] Currently, most traditional petrochemical heat exchangers use plate heat exchangers, with a small contact area between the heat exchange fluids, which affects the overall heat exchange efficiency, is inconvenient for fully heating the petroleum raw materials, cannot make full use of the heat of the hot fluid, and reduces the overall performance of the equipment. Summary of the Invention

[0004] To achieve the above purposes, the present invention is realized through the following technical solutions:

[0005] A spiral plate heat exchanger for petrochemical industry includes a heat exchange tank and a base fixedly installed at a position corresponding to the bottom of the outer circumferential surface of the heat exchange tank. An oil inlet pipe is communicated at the side of the bottom of the outer circumferential surface of the heat exchange tank, and an oil outlet pipe is communicated at the side of the top of the outer circumferential surface of the heat exchange tank. A heating mechanism is installed in the middle of the heat exchange tank;

[0006] A heat exchange mechanism, which is used for conducting heat on the petroleum fluid raw material, and the heat exchange mechanism is installed in the middle of the interior of the heat exchange tank;

[0007] Among them, the heat exchange mechanism includes a flow guide plate and strip-shaped holes. The edge of the surface of the flow guide plate is fixedly connected to the inner wall of the heat exchange tank. The flow guide plate is spiral and is installed in the middle inside the heat exchange tank. The strip-shaped holes are opened at the spiral curved surface of the flow guide plate. A support square rod is fixedly connected to the surface of the flow guide plate and near the oil inlet pipe. A diamond-shaped cutting piece is fixedly installed at one end of the support square rod away from the flow guide plate. An arc-shaped blade is fixedly connected to the surface of the flow guide plate and near the strip-shaped holes. Inject the petrochemical raw material fluid from the oil inlet pipe into the inside of the heat exchange tank. The flow guide plate can guide the petrochemical raw material fluid entering the heat exchange tank. Combining with the spiral shape of the flow guide plate, the petrochemical raw material fluid can be made to flow in a spiral shape, which can increase the flow path of the fluid, thereby increasing the heating time of the petrochemical raw material fluid and helping to heat-exchange and heat the petrochemical raw material fluid.

[0008] Preferably, both the oil inlet pipe and the oil outlet pipe are vertically installed. The opening of the oil inlet pipe faces downward, and the opening of the oil outlet pipe faces upward.

[0009] When the petrochemical raw material fluid flows in the heat exchange tank and is guided by the flow guide plate, the petrochemical raw material fluid flows along the surface of the flow guide plate. Part of the petrochemical raw material fluid passes through the strip-shaped holes. When the petrochemical raw material fluid contacts the arc-shaped blade, the petrochemical raw material fluid flowing in a strand can be divided, reducing the resistance during fluid flow, ensuring smooth flow of the petrochemical raw material fluid inside the heat exchange tank, and under the action of fluid pressure, the petrochemical raw material fluid flows out from the oil outlet pipe.

[0010] Preferably, the strip-shaped holes are evenly opened at the spiral curved surface of the flow guide plate. The arc-shaped blades are evenly installed on the surface of the flow guide plate and near the strip-shaped holes. With the support of the support square rod, and combining with the tip of the diamond-shaped cutting piece facing the inside of the oil inlet pipe, and by opening a blade inclined surface at the edge of the surface of the diamond-shaped cutting piece, the contact area between the diamond-shaped cutting piece and the petrochemical raw material fluid can be reduced, increasing the pressure, facilitating the division of the petrochemical raw material fluid entering the heat exchange tank, weakening the impact force of the petrochemical raw material fluid on the end of the flow guide plate, achieving a protective effect and not easily causing damage to the components.

[0011] Preferably, the bottom end of the diamond-shaped cutting piece extends into the inside of the oil inlet pipe. A blade inclined surface is opened at the edge of the surface of the diamond-shaped cutting piece. The diamond-shaped cutting piece is inclinedly installed.

[0012] With the diamond-shaped cutting piece inclinedly installed, the flow direction of the petrochemical raw material fluid is the same as the inclined direction of the diamond-shaped cutting piece, reducing the blockage during the flow of the petrochemical raw material fluid and making the flow of the petrochemical raw material fluid smooth.

[0013] Preferably, the heating mechanism includes a first end cover and a second end cover. Bolts are installed at the edges of the surface of the first end cover and the surface of the second end cover. The first end cover is fixedly installed on the surface of the heat exchange tank near one end of the oil outlet pipe through bolts, and the second end cover is fixedly installed on the heat exchange tank near one end of the oil inlet pipe through bolts. A main pipeline is fixedly connected to the center of the interior of the heat exchange tank, and a secondary pipeline is fixedly installed inside the heat exchange tank near the baffle. Conical hoppers are fixedly connected to the inlet of the main pipeline and the inlet of the secondary pipeline. A sealing assembly is installed between the first end cover and the heat exchange tank. Inject the hot fluid from the first end cover, and use the conical hoppers installed at the inlets of both the main pipeline and the secondary pipeline. The conical hoppers can increase the inflow of the hot fluid, so that the interiors of the main pipeline and the secondary pipeline are filled with the hot fluid, and the secondary pipeline is evenly installed inside the heat exchange tank through the baffle, which can make the petrochemical raw material fluid in the heat exchange tank be heated evenly. Combined with the main pipeline and the secondary pipeline passing through the surface of the baffle, the heat transfer efficiency can be increased, which further helps to heat the petrochemical raw material fluid. And the fluid in the main pipeline and the secondary pipeline flows into the interior of the second end cover and is discharged to the outside, so that heat exchange can be carried out, and the structures are linked together by making full use of the interaction between the structures.

[0014] The hot fluid is injected from the first end cover and flows into the interior of the second end cover through the main pipeline and the secondary pipeline, while the petrochemical raw material fluid is injected into the interior of the heat exchange tank from the oil inlet pipe and flows out from the oil outlet pipe, which can make the flow direction of the hot fluid opposite to the flow direction of the petrochemical raw material fluid, further increasing the heat transfer time and fully absorbing the heat of the hot fluid.

[0015] Preferably, the main pipeline passes through the center of the baffle, the secondary pipeline passes through the surface of the baffle, and the secondary pipelines are evenly distributed along the circumferential direction of the central axis of the main pipeline.

[0016] Preferably, the sealing assembly includes a circular groove and a sealing gasket. The circular groove is formed in the inner wall of the first end cover and near the conical hopper. The sealing gasket is installed between the first end cover and the heat exchange tank. A positioning hole is formed in the surface of the sealing gasket near the bolt, and the bolt passes through the center of the positioning hole. An elastic ring is fixedly installed on the inner side of the sealing gasket near the circular groove. A filling ring is fixedly connected to the edge of the surface of the elastic ring near the circular groove. The first end cover, the second end cover and the two ends of the heat exchange tank are fixed by bolts. The filling ring is supported by the sealing gasket and the elastic ring, so that the surface of the filling ring is embedded into the circular groove. Then, labyrinth primary sealing can be carried out on the connection between the first end cover, the second end cover and the two ends of the heat exchange tank by using curved surface contact. Moreover, the sealing gasket is located at the end of the heat exchange tank and is extruded, so that secondary sealing can be carried out again, and leakage is not likely to occur. The bolt passes through the center of the positioning hole, so that the sealing gasket is positioned and is not likely to shift.

[0017] Preferably, the sealing gasket, the elastic ring and the filling ring are concentric circles, and the position of the filling ring corresponds to the position of the circular groove.

[0018] Preferably, an auxiliary mechanism is installed between the first end cover and the oil inlet pipe and near the bottom of the outer circular surface of the heat exchange tank. The auxiliary mechanism includes a circular pipe and a bent pipe. The circular pipe is fixedly installed at the top of the surface of the first end cover. The bent pipe is fixedly installed between the bottom of the surface of the first end cover and the surface of the oil inlet pipe, and the bent pipe is installed directly below the heat exchange tank. The bent pipe passes through the middle of the surface of the oil inlet pipe. A heated circular channel is communicated between the bottom end of the circular pipe and the top end of the bent pipe. The heated circular channel is installed in the middle of the inner cavity of the first end cover. A strip-shaped heat conducting plate is fixedly connected between the bottom of the surface of the first end cover and the surface of the oil inlet pipe and near the bent pipe. A connecting piece is fixedly installed at the middle of the surface of the strip-shaped heat conducting plate and near the bent pipe. Inject another fluid that needs heat exchange into the circular pipe, and make the other fluid enter the bent pipe through the delivery of the heated circular channel. Then, when the other fluid flows through the inside of the heated circular channel, the other fluid can exchange heat with the hot fluid in the first end cover. Moreover, the heated circular channel is circular, which can increase the contact area, so that the other fluid in the heated circular channel is quickly heated. Combined with injecting petrochemical raw material fluid into the oil inlet pipe, heat exchange can be carried out on multiple fluids, making full use of the fluid flow and fully absorbing and utilizing the heat.

[0019] Preferably, there are two strip-shaped heat conducting plates, and the two strip-shaped heat conducting plates are symmetrically installed along the bent pipe. The top end of the strip-shaped heat conducting plate extends into the interior of the first end cover. The connecting pieces are evenly installed in the middle of the surface of the strip-shaped heat conducting plate and close to the bent pipe. As the other fluid in the bent pipe is heated, and considering that the bent pipe passes through the middle of the surface of the oil inlet pipe, the petrochemical raw material fluid in the oil inlet pipe can be preheated through the principle of heat transfer. Moreover, since the top end of the strip-shaped heat conducting plate extends into the interior of the first end cover, the temperature of the strip-shaped heat conducting plate can be increased when it is heated, thereby insulating the bent pipe. And one end of the strip-shaped heat conducting plate is connected to the surface of the oil inlet pipe, so that the petrochemical raw material fluid in the oil inlet pipe can be heated again, and the heat can be fully recovered and reused.

[0020] The present invention provides a spiral plate heat exchanger for petrochemical industry. It has the following beneficial effects:

[0021] First, for this spiral plate heat exchanger for petrochemical industry, the petrochemical raw material fluid is injected into the interior of the heat exchange tank from the oil inlet pipe. The guide plate can guide the petrochemical raw material fluid entering the heat exchange tank. Considering that the guide plate is spiral, the petrochemical raw material fluid can flow in a spiral shape, which can increase the flow path of the fluid, thereby increasing the heating time of the petrochemical raw material fluid and contributing to the heat exchange heating of the petrochemical raw material fluid.

[0022] Second, for this spiral plate heat exchanger for petrochemical industry, under the guidance of the guide plate, the petrochemical raw material fluid flows along the surface of the guide plate. Part of the petrochemical raw material fluid will pass through the strip-shaped holes. When the petrochemical raw material fluid contacts the arc-shaped blades, the petrochemical raw material fluid flowing in a stream can be divided, reducing the resistance when the fluid flows, ensuring the smooth flow of the petrochemical raw material fluid inside the heat exchange tank, and under the action of the fluid pressure, the petrochemical raw material fluid flows out from the oil outlet pipe.

[0023] Third, for this spiral plate heat exchanger for petrochemical industry, with the support of the support square rod, and considering that the tip of the diamond-shaped cutting piece faces the interior of the oil inlet pipe, and by opening a blade inclined surface at the edge of the surface of the diamond-shaped cutting piece, the contact area between the diamond-shaped cutting piece and the petrochemical raw material fluid can be reduced, increasing the pressure, facilitating the division of the petrochemical raw material fluid entering the heat exchange tank, weakening the impact force of the petrochemical raw material fluid on the end of the guide plate, achieving the protection effect and not easily damaging the components.

[0024] Fourth, for this spiral plate heat exchanger for petrochemical industry, with the diamond-shaped cutting piece installed obliquely, the flow direction of the petrochemical raw material fluid is consistent with the oblique direction of the diamond-shaped cutting piece, reducing the blockage of the petrochemical raw material fluid during flow and making the petrochemical raw material fluid flow smoothly.

[0025] V. For the spiral plate heat exchanger for petrochemical industry, by filling the interior of the main pipe and the auxiliary pipe with hot fluid and uniformly installing the auxiliary pipe inside the heat exchange tank, the petrochemical raw material fluid in the heat exchange tank can be evenly heated. Combining the main pipe and the auxiliary pipe passing through the surface of the deflector plate can increase the heat transfer efficiency and further contribute to the heating of the petrochemical raw material fluid.

[0026] VI. For the spiral plate heat exchanger for petrochemical industry, the sealing gasket and the elastic ring are used to support the packing ring, so that the surface of the packing ring is embedded into the interior of the circular groove. Then, by using the curved surface contact, a labyrinth primary seal can be carried out at the connection between the first end cover, the second end cover and both ends of the heat exchange tank. Moreover, the sealing gasket is located at the end of the heat exchange tank and is squeezed, so that secondary sealing can be carried out again, and leakage is not likely to occur. The bolt passes through the center of the positioning hole, so that the sealing gasket is positioned and is not likely to shift.

[0027] VII. For the spiral plate heat exchanger for petrochemical industry, hot fluid is injected from the first end cover, flows through the main pipe and the auxiliary pipe and into the interior of the second end cover. The petrochemical raw material fluid is injected into the heat exchange tank from the inlet pipe and flows out from the outlet pipe. This can make the flow direction of the hot fluid opposite to that of the petrochemical raw material fluid, further increasing the heat transfer time and fully absorbing the heat of the hot fluid.

[0028] VIII. For the spiral plate heat exchanger for petrochemical industry, another fluid that needs heat exchange is injected from the round pipe, and the other fluid is transported through the heated circular channel and into the bent pipe. When the other fluid flows through the interior of the heated circular channel, the other fluid can exchange heat with the hot fluid in the first end cover. Moreover, the heated circular channel is circular in shape, which can increase the contact area, enabling the other fluid in the heated circular channel to be quickly heated. Combining the injection of the petrochemical raw material fluid from the inlet pipe, heat exchange can be carried out on multiple fluids, making full use of the flow of the fluids and fully absorbing and utilizing the heat.

[0029] IX. For the spiral plate heat exchanger for petrochemical industry, by using the bent pipe to pass through the middle of the surface of the inlet pipe, the petrochemical raw material fluid in the inlet pipe can be preheated through the heat transfer principle. The top of the strip-shaped heat conducting plate extends into the interior of the first end cover, so that the temperature of the strip-shaped heat conducting plate rises when heated, thereby insulating the bent pipe. One end of the strip-shaped heat conducting plate is connected to the surface of the inlet pipe, so that the petrochemical raw material fluid in the inlet pipe can be heated again, and the heat can be fully recovered and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the overall spiral plate heat exchanger for petrochemical industry of the present invention;

[0031] Figure 2 This is a schematic structural diagram of the spiral plate heat exchanger for petrochemical industry of the present invention when viewed from below.

[0032] Figure 3 This is a schematic internal structural diagram of the cross-section of the spiral plate heat exchanger for petrochemical industry of the present invention.

[0033] Figure 4 This is a schematic structural diagram of the connection between the heat exchange mechanism and the heat exchange tank of the present invention.

[0034] Figure 5 This is a schematic overall structural diagram of the heat exchange mechanism of the present invention.

[0035] Figure 6 This is a schematic structural diagram of the connection between the heating mechanism and the heat exchange tank of the present invention.

[0036] Figure 7 This is a schematic overall structural diagram of the sealing assembly of the present invention.

[0037] Figure 8 This is a schematic disassembled structural diagram of the sealing assembly of the present invention.

[0038] Figure 9 This is a schematic structural diagram of the connection between the auxiliary mechanism and the first end cover and the oil inlet pipe of the present invention.

[0039] Figure 10 This is a schematic structural diagram of the auxiliary mechanism when viewed from below of the present invention.

[0040] In the figure: 1. Heat exchange tank; 2. Base; 3. Oil inlet pipe; 4. Oil outlet pipe; 5. Heating mechanism; 6. Heat exchange mechanism; 7. Auxiliary mechanism; 51. First end cover; 52. Second end cover; 53. Main pipeline; 54. Sub-pipeline; 55. Conical hopper; 56. Sealing assembly; 57. Bolt; 561. Circular groove; 562. Sealing gasket; 563. Positioning hole; 564. Elastic ring; 565. Filling ring; 61. Deflector; 62. Strip-shaped hole; 63. Support square rod; 64. Rhombic cutting piece; 65. Arc-shaped blade; 71. Round pipe; 72. Bent pipe; 73. Heated circular channel; 74. Strip-shaped heat conducting plate; 75. Connecting piece. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] The first embodiment is as Figures 1 to 5As shown in the figure, the present invention provides a technical solution:

[0043] A spiral plate heat exchanger for petrochemical industry, which includes a heat exchange tank 1 and a base 2 fixedly installed at the corresponding position at the bottom of the outer circular surface of the heat exchange tank 1. An oil inlet pipe 3 is communicated with the side of the bottom of the outer circular surface of the heat exchange tank 1, and an oil outlet pipe 4 is communicated with the side of the top of the outer circular surface of the heat exchange tank 1. A heating mechanism 5 is installed in the middle of the heat exchange tank 1;

[0044] Both the oil inlet pipe 3 and the oil outlet pipe 4 are vertically installed, the opening of the oil inlet pipe 3 faces downward, and the opening of the oil outlet pipe 4 faces upward.

[0045] A heat exchange mechanism 6, which is used for conducting heat on the petrochemical raw material fluid, and the heat exchange mechanism 6 is installed in the middle of the interior of the heat exchange tank 1;

[0046] Among them, the heat exchange mechanism 6 includes a guide plate 61 and strip-shaped holes 62. The edge of the surface of the guide plate 61 is fixedly connected to the inner wall of the heat exchange tank 1. The guide plate 61 is spiral, and the guide plate 61 is installed in the middle of the interior of the heat exchange tank 1. The strip-shaped holes 62 are opened on the spiral curved surface of the surface of the guide plate 61. A support square rod 63 is fixedly connected to the surface of the guide plate 61 and close to the oil inlet pipe 3. A diamond-shaped cutting piece 64 is fixedly installed at the end of the support square rod 63 away from the guide plate 61. An arc-shaped blade 65 is fixedly connected to the surface of the guide plate 61 and close to the strip-shaped holes 62. The staff injects the petrochemical raw material fluid from the oil inlet pipe 3 into the interior of the heat exchange tank 1. The guide plate 61 can guide the petrochemical raw material fluid entering the heat exchange tank 1, and combined with the spiral shape of the guide plate 61, it can make the petrochemical raw material fluid flow in a spiral shape, thereby increasing the heating time of the petrochemical raw material fluid.

[0047] The strip-shaped holes 62 are evenly opened on the spiral curved surface of the surface of the guide plate 61. The arc-shaped blades 65 are evenly installed on the surface of the guide plate 61 and close to the strip-shaped holes 62. When the petrochemical raw material fluid flows in the heat exchange tank 1 and is guided by the guide plate 61, the petrochemical raw material fluid flows along the surface of the guide plate 61. Part of the petrochemical raw material fluid will pass through the strip-shaped holes 62. When the petrochemical raw material fluid contacts the arc-shaped blades 65, it can divide the petrochemical raw material fluid flowing in a strand, reduce the resistance during the fluid flow, ensure the smooth flow of the petrochemical raw material fluid inside the heat exchange tank 1, and under the action of the fluid pressure, make the petrochemical raw material fluid flow out from the oil outlet pipe 4.

[0048] With the support of the supporting square rod 63, and combining with the tip of the diamond-shaped cutting piece 64 facing the inside of the oil inlet pipe 3, and by opening a blade inclined surface at the edge of the surface of the diamond-shaped cutting piece 64, the contact area between the diamond-shaped cutting piece 64 and the petrochemical raw material fluid can be reduced, increasing the pressure, facilitating the division of the petrochemical raw material fluid entering the heat exchange tank 1, and weakening the impact force of the petrochemical raw material fluid on the end of the deflector 61.

[0049] The bottom end of the diamond-shaped cutting piece 64 extends into the inside of the oil inlet pipe 3. A blade inclined surface is provided at the edge of the surface of the diamond-shaped cutting piece 64. The diamond-shaped cutting piece 64 is installed obliquely. By using the oblique installation of the diamond-shaped cutting piece 64, the flow direction of the petrochemical raw material fluid is made consistent with the oblique direction of the diamond-shaped cutting piece 64, reducing the blockage to the flow of the petrochemical raw material fluid.

[0050] Second embodiment, on the basis of the first embodiment, please refer to Figures 1 to 8 as shown:

[0051] The heating mechanism 5 includes a first end cover 51 and a second end cover 52. Bolts 57 are installed at the edges of the surface of the first end cover 51 and the surface of the second end cover 52. The first end cover 51 is fixedly installed on the surface of the heat exchange tank 1 near one end of the oil outlet pipe 4 through the bolts 57, and the second end cover 52 is fixedly installed on the heat exchange tank 1 near one end of the oil inlet pipe 3 through the bolts 57. A main pipeline 53 is fixedly connected to the center inside the heat exchange tank 1, and an auxiliary pipeline 54 is fixedly installed inside the heat exchange tank 1 near the deflector 61. Conical hoppers 55 are fixedly connected to the inlet ports of the main pipeline 53 and the auxiliary pipeline 54. A sealing component 56 is installed between the first end cover 51 and the heat exchange tank 1. The staff injects the hot fluid from the first end cover 51, and by using the conical hoppers 55 installed at the inlet ports of the main pipeline 53 and the auxiliary pipeline 54, the conical hoppers 55 can increase the inflow of the hot fluid, making the inside of the main pipeline 53 and the inside of the auxiliary pipeline 54 filled with the hot fluid, and evenly installing the auxiliary pipeline 54 inside the heat exchange tank 1, the petrochemical raw material fluid in the heat exchange tank 1 can be heated evenly. And by combining the main pipeline 53 and the auxiliary pipeline 54 passing through the surface of the deflector 61, the heat transfer efficiency can be increased, further helping to heat the petrochemical raw material fluid, and the fluid in the main pipeline 53 and the auxiliary pipeline 54 flows into the inside of the second end cover 52 and is discharged to the outside.

[0052] By injecting the hot fluid from the first end cover 51 and flowing through the main pipeline 53 and the auxiliary pipeline 54 into the inside of the second end cover 52, while the petrochemical raw material fluid is injected into the inside of the heat exchange tank 1 from the oil inlet pipe 3 and flows out from the oil outlet pipe 4, the flow direction of the hot fluid can be made opposite to the flow direction of the petrochemical raw material fluid, increasing the heat transfer time.

[0053] The main pipeline 53 passes through the center of the flow deflector 61, and the auxiliary pipeline 54 passes through the surface of the flow deflector 61. The auxiliary pipelines 54 are evenly distributed along the circumferential direction of the central axis of the main pipeline 53.

[0054] The sealing assembly 56 includes a circular groove 561 and a sealing gasket 562. The circular groove 561 is opened on the inner wall of the first end cover 51 and near the conical hopper 55. The sealing gasket 562 is installed between the first end cover 51 and the heat exchange tank 1. A positioning hole 563 is opened on the surface of the sealing gasket 562 and near the bolt 57. The bolt 57 passes through the center of the positioning hole 563. An elastic ring 564 is fixedly installed on the inner side of the sealing gasket 562 and near one side of the circular groove 561. A filling ring 565 is fixedly connected to the edge of the surface of the elastic ring 564 and near the circular groove 561. The first end cover 51, the second end cover 52 and the two ends of the heat exchange tank 1 are fixed by the bolt 57. The filling ring 565 is supported by the sealing gasket 562 and the elastic ring 564, so that the surface of the filling ring 565 is embedded into the inside of the circular groove 561. Then, the labyrinth primary seal can be carried out on the connection between the first end cover 51, the second end cover 52 and the two ends of the heat exchange tank 1 by using the curved surface contact. Moreover, the sealing gasket 562 is located at the end of the heat exchange tank 1 and is extruded, so that the secondary seal can be carried out again, and the leakage is not likely to occur. The bolt 57 passes through the center of the positioning hole 563, so that the sealing gasket 562 is positioned.

[0055] The sealing gasket 562, the elastic ring 564 and the filling ring 565 are concentric circles, and the position of the filling ring 565 corresponds to the position of the circular groove 561.

[0056] The third embodiment, on the basis of the first and second embodiments, please refer to Figures 1 to 10 as shown:

[0057] An auxiliary mechanism 7 is installed between the first end cover 51 and the oil inlet pipe 3 and near the bottom position of the outer circular surface of the heat exchange tank 1. The auxiliary mechanism 7 includes a circular pipe 71 and a bent pipe 72. The circular pipe 71 is fixedly installed at the top of the surface of the first end cover 51, and the bent pipe 72 is fixedly installed between the bottom of the surface of the first end cover 51 and the surface of the oil inlet pipe 3, and the bent pipe 72 is installed directly below the heat exchange tank 1. The bent pipe 72 passes through the middle of the surface of the oil inlet pipe 3. A heat - receiving circular channel 73 is communicated between the bottom end of the circular pipe 71 and the top end of the bent pipe 72. The heat - receiving circular channel 73 is installed in the middle of the inner cavity of the first end cover 51. A strip - shaped heat - conducting plate 74 is fixedly connected between the bottom of the surface of the first end cover 51 and the surface of the oil inlet pipe 3 and near the bent pipe 72. A connecting piece 75 is fixedly installed at the middle of the surface of the strip - shaped heat - conducting plate 74 and near the bent pipe 72. Workers inject another fluid that needs heat exchange into the circular pipe 71, and make the other fluid enter the bent pipe 72 through the transportation of the heat - receiving circular channel 73. When the other fluid flows through the inside of the heat - receiving circular channel 73, the other fluid can exchange heat with the hot fluid in the first end cover 51. And the heat - receiving circular channel 73 is circular in shape, which can increase the contact area, so that the other fluid in the heat - receiving circular channel 73 is quickly heated. Combined with injecting petrochemical raw material fluid from the oil inlet pipe 3, heat exchange can be carried out on multiple fluids.

[0058] There are two strip - shaped heat - conducting plates 74, and the two strip - shaped heat - conducting plates 74 are symmetrically installed along the bent pipe 72. The top end of the strip - shaped heat - conducting plate 74 extends into the first end cover 51. The connecting pieces 75 are evenly installed at the middle of the surface of the strip - shaped heat - conducting plate 74 and near the bent pipe 72. As the other fluid in the bent pipe 72 is heated, and combined with the fact that the bent pipe 72 passes through the middle of the surface of the oil inlet pipe 3, the petrochemical raw material fluid in the oil inlet pipe 3 can be pre - heated through the heat transfer principle. And since the top end of the strip - shaped heat - conducting plate 74 extends into the first end cover 51, the temperature of the strip - shaped heat - conducting plate 74 can be increased by heat, so as to keep the bent pipe 72 warm. And one end of the strip - shaped heat - conducting plate 74 is connected to the surface of the oil inlet pipe 3, so that the petrochemical raw material fluid in the oil inlet pipe 3 can be heated again, and the heat can be fully recovered and reused.

[0059] In use, first, the staff injects the hot fluid from the first end cover 51. The inlet of the main pipeline 53 and the inlet of the auxiliary pipeline 54 are both equipped with conical hoppers 55. The conical hoppers 55 can increase the inflow of the hot fluid, so that the inside of the main pipeline 53 and the inside of the auxiliary pipeline 54 are filled with the hot fluid. The auxiliary pipeline 54 is evenly installed inside the heat exchange tank 1, so that the petrochemical raw material fluid in the heat exchange tank 1 is heated evenly. Combined with the main pipeline 53 and the auxiliary pipeline 54 passing through the surface of the flow guide plate 61, the heat transfer efficiency can be increased, which further helps to heat the petrochemical raw material fluid. And the fluid in the main pipeline 53 and the auxiliary pipeline 54 flows into the inside of the second end cover 52 and is discharged to the outside;

[0060] The first end cover 51 and the second end cover 52 are fixed to both ends of the heat exchange tank 1 by bolts 57. The sealing gasket 562 and the elastic ring 564 support the packing ring 565, so that the surface of the packing ring 565 is embedded into the inside of the circular groove 561. Then, through surface contact, a labyrinth preliminary seal can be carried out on the connection between the first end cover 51, the second end cover 52 and both ends of the heat exchange tank 1. And the sealing gasket 562 is located at the end of the heat exchange tank 1 and is squeezed, so that secondary sealing can be carried out again, and leakage is not likely to occur. The bolt 57 passes through the center of the positioning hole 563, so that the sealing gasket 562 is positioned;

[0061] At the same time, the staff injects the petrochemical raw material fluid into the heat exchange tank 1 from the inlet pipe 3. With the support of the support square rod 63, and the tip of the diamond-shaped cutting piece 64 faces the inside of the inlet pipe 3. By opening a blade inclined surface at the edge of the surface of the diamond-shaped cutting piece 64, the contact area between the diamond-shaped cutting piece 64 and the petrochemical raw material fluid can be reduced, so that the pressure increases, which is convenient for dividing the petrochemical raw material fluid entering the heat exchange tank 1. The impact force of the petrochemical raw material fluid on the end of the flow guide plate 61 can be weakened. And the flow guide plate 61 can guide the petrochemical raw material fluid entering the heat exchange tank 1. Combined with the fact that the flow guide plate 61 is spiral, the petrochemical raw material fluid can flow in a spiral shape, thereby increasing the heating time of the petrochemical raw material fluid;

[0062] When the petrochemical raw material fluid flows in the heat exchange tank 1 and is guided by the flow guide plate 61, the petrochemical raw material fluid flows along the surface of the flow guide plate 61. Part of the petrochemical raw material fluid passes through the strip-shaped holes 62. When the petrochemical raw material fluid contacts the arc-shaped blade 65, the petrochemical raw material fluid flowing in a strand can be divided, reducing the resistance during fluid flow, ensuring the smooth flow of the petrochemical raw material fluid inside the heat exchange tank 1. Under the action of the fluid pressure, the petrochemical raw material fluid flows out from the outlet pipe 4;

[0063] And it is injected from the first end cover 51 by a hot fluid, flows through the main pipeline 53 and the auxiliary pipeline 54 and into the interior of the second end cover 52, while the petrochemical raw material fluid is injected into the interior of the heat exchange tank 1 from the oil inlet pipe 3 and flows out from the oil outlet pipe 4, which can make the flow direction of the hot fluid opposite to that of the petrochemical raw material fluid, increasing the heat transfer time;

[0064] Moreover, the staff injects another fluid that needs heat exchange into the circular pipe 71, and makes the other fluid enter the bent pipe 72 through the conveyance of the heated circular channel 73. When the other fluid flows through the interior of the heated circular channel 73, the other fluid can exchange heat with the hot fluid in the first end cover 51. And the heated circular channel 73 is circular in shape, which can increase the contact area, enabling the other fluid in the heated circular channel 73 to be heated quickly. Combined with injecting the petrochemical raw material fluid from the oil inlet pipe 3, heat exchange can be carried out on multiple fluids.

[0065] As the other fluid in the bent pipe 72 is heated and combined with the bent pipe 72 passing through the middle of the surface of the oil inlet pipe 3, the petrochemical raw material fluid in the oil inlet pipe 3 can be preheated through the heat transfer principle. And the top end of the strip-shaped heat conducting plate 74 extends into the interior of the first end cover 51, which can make the temperature of the strip-shaped heat conducting plate 74 rise, thus insulating the bent pipe 72. And one end of the strip-shaped heat conducting plate 74 is connected to the surface of the oil inlet pipe 3, and the petrochemical raw material fluid in the oil inlet pipe 3 can be heated again, fully recycling and reusing the heat.

[0066] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0067] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral plate heat exchanger for petrochemical industry, characterized in that, Including: A heat exchange tank (1), and a base (2) fixedly installed at a corresponding position at the bottom of the outer circular surface of the heat exchange tank (1). An oil inlet pipe (3) is connected to the side of the bottom of the outer circular surface of the heat exchange tank (1), and an oil outlet pipe (4) is connected to the side of the top of the outer circular surface of the heat exchange tank (1). A heating mechanism (5) is installed in the middle of the heat exchange tank (1); A heat exchange mechanism (6), which is used for conducting heat on the petroleum fluid raw material. The heat exchange mechanism (6) is installed in the middle of the interior of the heat exchange tank (1); Among them, the heat exchange mechanism (6) includes a guide plate (61) and a strip-shaped hole (62). The edge of the surface of the guide plate (61) is fixedly connected to the inner wall of the heat exchange tank (1). The guide plate (61) is spiral, and the guide plate (61) is installed in the middle of the interior of the heat exchange tank (1). The strip-shaped hole (62) is opened on the spiral curved surface of the surface of the guide plate (61). A support square rod (63) is fixedly connected to the surface of the guide plate (61) and near the oil inlet pipe (3). A diamond-shaped cutting piece (64) is fixedly installed at one end of the support square rod (63) away from the guide plate (61). An arc-shaped blade (65) is fixedly connected to the surface of the guide plate (61) and near the strip-shaped hole (62); The bottom end of the diamond-shaped cutting piece (64) extends into the interior of the oil inlet pipe (3). A blade inclined surface is opened on the edge of the surface of the diamond-shaped cutting piece (64). The diamond-shaped cutting piece (64) is installed obliquely; The heating mechanism (5) includes a first end cover (51) and a second end cover (52). Bolts (57) are installed on the edges of the surfaces of the first end cover (51) and the second end cover (52). The first end cover (51) is fixedly installed on the surface of the heat exchange tank (1) and near one end of the oil outlet pipe (4) through the bolts (57). The second end cover (52) is fixedly installed on the heat exchange tank (1) and near one end of the oil inlet pipe (3) through the bolts (57). A main pipe (53) is fixedly connected to the center of the interior of the heat exchange tank (1). A sub-pipe (54) is fixedly installed in the interior of the heat exchange tank (1) and near the guide plate (61). Conical hoppers (55) are fixedly connected to the inlet ports of the main pipe (53) and the sub-pipe (54). A sealing component (56) is installed between the first end cover (51) and the heat exchange tank (1); An auxiliary mechanism (7) is installed between the first end cover (51) and the oil inlet pipe (3) and near the bottom position of the outer circular surface of the heat exchange tank (1). The auxiliary mechanism (7) includes a circular pipe (71) and a bent pipe (72). The circular pipe (71) is fixedly installed at the top of the surface of the first end cover (51), and the bent pipe (72) is fixedly installed between the bottom of the surface of the first end cover (51) and the surface of the oil inlet pipe (3), and the bent pipe (72) is installed directly below the heat exchange tank (1). The bent pipe (72) passes through the middle of the surface of the oil inlet pipe (3). A heated circular channel (73) is communicated between the bottom end of the circular pipe (71) and the top end of the bent pipe (72). The heated circular channel (73) is installed in the middle of the inner cavity of the first end cover (51). A strip-shaped heat conducting plate (74) is fixedly connected between the bottom of the surface of the first end cover (51) and the surface of the oil inlet pipe (3) and near the position of the bent pipe (72). A connecting piece (75) is fixedly installed at the middle of the surface of the strip-shaped heat conducting plate (74) and near the position of the bent pipe (72). There are two strip-shaped heat conducting plates (74), and the two strip-shaped heat conducting plates (74) are symmetrically installed along the bent pipe (72). The top end of the strip-shaped heat conducting plate (74) extends into the inside of the first end cover (51). The connecting pieces (75) are evenly installed at the middle of the surface of the strip-shaped heat conducting plate (74) and near the position of the bent pipe (72).

2. The spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: Both the oil inlet pipe (3) and the oil outlet pipe (4) are vertically installed. The opening of the oil inlet pipe (3) faces downward, and the opening of the oil outlet pipe (4) faces upward.

3. The spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The strip-shaped holes (62) are evenly opened at the spiral curved surface of the surface of the guide plate (61). The arc-shaped blades (65) are evenly installed on the surface of the guide plate (61) and near the position of the strip-shaped holes (62).

4. The spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The main pipe (53) passes through the center of the guide plate (61), and the sub-pipes (54) pass through the surface of the guide plate (61), and the sub-pipes (54) are evenly distributed along the circumferential direction of the central axis of the main pipe (53).

5. A spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The sealing assembly (56) includes a circular groove (561) and a sealing gasket (562). The circular groove (561) is opened on the inner wall of the first end cover (51) and near the position of the conical hopper (55). The sealing gasket (562) is installed between the first end cover (51) and the heat exchange tank (1). A positioning hole (563) is opened on the surface of the sealing gasket (562) and near the position of the bolt (57). The bolt (57) passes through the center of the positioning hole (563). An elastic ring (564) is fixedly installed on the inner side surface of the sealing gasket (562) and near one side of the circular groove (561). A filling ring (565) is fixedly connected to the edge of the surface of the elastic ring (564) and near the position of the circular groove (561).

6. The spiral plate heat exchanger for petrochemical industry according to claim 5, characterized in that: The sealing gasket (562), the elastic ring (564) and the filling ring (565) are concentric circles, and the position of the filling ring (565) corresponds to the position of the circular groove (561).

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