Spiral-plate heat exchanger for petrochemical industry

Abstract

The invention discloses a spiral plate heat exchanger for petrochemical engineering, and relates to the technical field of heat exchange equipment. The spiral plate heat exchanger for petrochemical engineering comprises a heat exchange tank and a heat exchange mechanism, the side of the bottom of the outer circle face of the heat exchange tank communicates with an oil inlet pipe, the side of the top of the outer circle face of the heat exchange tank communicates with an oil outlet pipe, a heating mechanism is installed in the middle of the heat exchange tank, and the heat exchange mechanism comprises a flow guide plate and a strip-shaped hole; the guide plate is installed in the middle of the interior of the heat exchange tank, the strip-shaped hole is formed in the spiral curved surface of the surface of the guide plate, a supporting square rod is fixedly connected to the position, close to the oil inlet pipe, of the surface of the guide plate, and a rhombic cutting piece is fixedly installed at the end, away from the guide plate, of the supporting square rod; the arc-shaped blades are fixedly connected to the positions, close to the strip-shaped holes, of the surfaces of the guide plates, so that the purpose of uniform heating is achieved, fluid flows smoothly, the situation that the fluid is blocked is not prone to occurring, the heat transfer time is prolonged, and the heat exchange effect is good.

Description

Technical Field

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

[0002] Petrochemical industry refers to the processing industry that uses oil and natural gas as raw materials to produce oil products and petrochemical products. Petrochemical products are one of the main sources of energy in modern society, providing power and thermal energy support for transportation, industrial production, residents' lives, etc. Nowadays, with the increasing use of oil, the petrochemical industry has also developed rapidly. Spiral plate heat exchanger is a highly efficient heat exchange equipment, widely used in chemical, petroleum, pharmaceutical, food and other industries. The spiral plate heat exchanger achieves 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 fluid inside the spiral plate. When the cold and hot fluids pass through the heat exchanger, they enter two different channels of the spiral plate respectively. The cold and hot fluids cross-flow inside the spiral plate, thereby achieving heat transfer.

[0003] At present, most traditional petrochemical heat exchangers use plate heat exchangers, which have a small contact area with the heat exchange fluid, affecting the overall heat exchange efficiency, making it inconvenient to fully heat the petroleum raw materials, and unable to fully utilize the heat of the hot fluid, reducing the overall performance of the equipment. Summary of the invention

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

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

[0006] A heat exchange mechanism, which is used to conduct heat to the petroleum fluid raw material, and is installed in the middle of the heat exchange tank;

[0007] Wherein, the heat exchange mechanism includes a guide plate and a strip hole, the edge of the guide plate surface is fixedly connected to the inner wall of the heat exchange tank, the guide plate is spiral, and the guide plate is installed in the middle of the heat exchange tank, the strip hole is opened at the spiral surface of the guide plate surface, the surface of the guide plate and the position close to the oil inlet pipe are fixedly connected with a supporting square rod, the end of the supporting square rod away from the guide plate is fixedly installed with a diamond cutting piece, the surface of the guide plate and the position close to the strip hole are fixedly connected with an arc blade, the petrochemical raw material fluid is injected from the oil inlet pipe into the interior of the heat exchange tank, the guide plate can guide the petrochemical raw material fluid entering the heat exchange tank, and combined with the spiral shape of the guide plate, the petrochemical raw material fluid can be made to flow in a spiral shape, the flow path of the fluid can be increased, thereby increasing the heating time of the petrochemical raw material fluid, which is helpful for heat exchange heating of the petrochemical raw material fluid.

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

[0009] When the petrochemical raw material fluid flows in the heat exchange tank, and 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 holes, and when the petrochemical raw material fluid contacts the arc blade, the petrochemical raw material fluid flowing in strands can be divided to reduce the resistance of the fluid during flow, ensure that the petrochemical raw material fluid flows smoothly 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.

[0010] Preferably, the strip holes are evenly arranged on the spiral surface of the guide plate surface, and the arc-shaped blades are evenly installed on the surface of the guide plate and close to the strip holes. With the support of the supporting square rod and the tip of the diamond-shaped cutting blade facing the inside of the oil inlet pipe, and by providing a blade bevel on the edge of the diamond-shaped cutting blade surface, the contact area between the diamond-shaped cutting blade and the petrochemical raw material fluid can be reduced, so that the pressure is increased, which is convenient for dividing the petrochemical raw material fluid entering the heat exchange tank, and can weaken the impact force of the petrochemical raw material fluid on the end of the guide plate, so as to achieve a protective effect and not easily cause damage to the components.

[0011] Preferably, the bottom end of the diamond-shaped cutting blade extends to the inside of the oil inlet pipe, a blade bevel is provided at the edge of the surface of the diamond-shaped cutting blade, and the diamond-shaped cutting blade is installed at an angle.

[0012] By using the diamond-shaped cutting blades to be installed obliquely, the flow direction of the petrochemical raw material fluid is consistent with the inclination direction of the diamond-shaped cutting blades, thereby reducing the obstruction to the flow of the petrochemical raw material fluid and making the petrochemical raw material fluid flow smoothly.

[0013] Preferably, the heating mechanism includes a first end cover and a second end cover, the edges of the first end cover surface and the edges of the second end cover surface are both installed with bolts, the first end cover is fixedly installed on the surface of the heat exchange tank and close to one end of the oil outlet pipe by bolts, the second end cover is fixedly installed on the heat exchange tank and close to one end of the oil inlet pipe by bolts, a main pipeline is fixedly connected to the center of the heat exchange tank, a secondary pipeline is fixedly installed in the heat exchange tank and close to the guide plate, the inlet of the main pipeline and the inlet of the secondary pipeline are both fixedly connected with a conical bucket, a sealing assembly is installed between the first end cover and the heat exchange tank to transfer the hot fluid from the first end cover The hot fluid is injected at the inlet of the main pipe and the inlet of the auxiliary pipe, and a conical bucket is installed at each of the inlet of the main pipe and the auxiliary pipe. The conical bucket can increase the amount of hot fluid entering, so that the inside of the main pipe and the auxiliary pipe are filled with hot fluid, and the conical bucket is evenly installed inside the heat exchange tank through the auxiliary pipe, so that the petrochemical raw material fluid in the heat exchange tank can be heated evenly. In combination with the main pipe and the auxiliary pipe passing through the surface of the guide plate, the heat transfer efficiency can be increased, which is further helpful for heating the petrochemical raw material fluid. The fluid in the main pipe and the auxiliary pipe flows into the inside of the second end cover and is discharged to the outside, so that heat exchange can be carried out, making full use of the interaction between the structures and connecting the structures together.

[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 auxiliary 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. The flow direction of the hot fluid can be 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 guide plate, the auxiliary pipeline passes through the surface of the guide plate, and the auxiliary 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 opened on the inner wall of the first end cover and close to the conical bucket, the sealing gasket is installed between the first end cover and the heat exchange tank, a positioning hole is opened on the surface of the sealing gasket and close to the bolt, the bolt passes through the center of the positioning hole, an elastic ring is fixedly installed on the inner side surface of the sealing gasket and close to one side of the circular groove, a filling ring is fixedly connected to the edge of the surface of the elastic ring and close to 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 in the inside of the circular groove, so that the curved surface contact can be used to perform a labyrinth-type preliminary seal on the connection between the first end cover, the second end cover and the two ends of the heat exchange tank, and the sealing gasket is at the end position of the heat exchange tank and is squeezed, so that it can be sealed again, and it is not easy to leak, and the bolt is passed through the center of the positioning hole, so that the sealing gasket is positioned and it is not easy to deviate.

[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 position of the outer circular surface of the heat exchange tank, the auxiliary mechanism includes a round tube and a bent tube, the round tube is fixedly installed on the top of the first end cover surface, the bent tube is fixedly installed between the bottom of the first end cover surface and the surface of the oil inlet pipe, and the bent tube is installed directly below the heat exchange tank, the bent tube passes through the middle of the oil inlet pipe surface, a heated circular channel is connected between the bottom end of the round tube and the top end of the bent tube, the heated circular channel is installed in the middle of the inner cavity of the first end cover, and a strip guide is fixedly connected between the bottom of the first end cover surface and the surface of the oil inlet pipe and near the bent tube. The heat plate, a connecting piece is fixedly installed in the middle of the surface of the strip heat conductive plate and near the bent tube. Another fluid that needs heat exchange is injected from the round tube, and the other fluid is transported into the bent tube through the heated circular channel. When the other fluid flows through the inside of the heated circular channel, the other fluid exchanges heat with the hot fluid in the first end cover. The heated circular channel is circular in shape, which can increase the contact area, so that the other fluid in the heated circular channel is quickly heated. Combined with the injection of petrochemical raw material fluid from the oil inlet pipe, heat exchange can be performed on multiple fluids, fully utilizing the flow of the fluid 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 tube, the top end of the strip-shaped heat conducting plate extends to the inside of the first end cover, and the connecting piece is evenly installed in the middle of the surface of the strip-shaped heat conducting plate and close to the bent tube. As another fluid in the bent tube is heated and combined with the bent tube passing 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 heat transfer principle, and the top end of the strip-shaped heat conducting plate extends to the inside of the first end cover, so that the heated temperature of the strip-shaped heat conducting plate can be increased, thereby insulating the bent tube, 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] 1. The spiral plate heat exchanger for petrochemical industry injects the petrochemical raw material fluid from the oil inlet pipe into the interior of the heat exchange tank. The guide plate can guide the petrochemical raw material fluid entering the heat exchange tank. Combined with the spiral shape of the guide plate, 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, which is helpful for heat exchange heating of the petrochemical raw material fluid.

[0022] 2. The spiral plate heat exchanger for petrochemical industry, under the guidance of the guide plate, allows the petrochemical raw material fluid to flow along the surface of the guide plate, and part of the petrochemical raw material fluid will pass through the strip holes, and when the petrochemical raw material fluid contacts the arc blade, the petrochemical raw material fluid flowing in strands can be divided, reducing the resistance of the fluid during flow, ensuring that the petrochemical raw material fluid flows smoothly 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] 3. The spiral plate heat exchanger for petrochemical industry utilizes the support of the supporting square rod, and the tip of the diamond-shaped cutting piece is directed toward the inside of the oil inlet pipe, and the blade bevel is provided at the edge of the surface of the diamond-shaped cutting piece, so that the contact area between the diamond-shaped cutting piece and the petrochemical raw material fluid can be reduced, so that the pressure is increased, and it is convenient to divide the petrochemical raw material fluid entering the heat exchange tank, and the impact force of the petrochemical raw material fluid on the end of the guide plate can be weakened, so as to achieve a protective effect and not easily cause damage to the components.

[0024] Fourth, the spiral plate heat exchanger for petrochemical industry is installed obliquely by using diamond-shaped cut pieces, so that the flow direction of the petrochemical raw material fluid is consistent with the inclination direction of the diamond-shaped cut pieces, reducing the obstruction to the flow of the petrochemical raw material fluid and making the petrochemical raw material fluid flow smoothly.

[0025] 5. The spiral plate heat exchanger for petrochemical industry utilizes the interior of the main pipe and the interior of the auxiliary pipe to be filled with hot fluid, and is evenly installed in the heat exchange tank through the auxiliary pipe, so that the petrochemical raw material fluid in the heat exchange tank can be heated evenly, and the main pipe and the auxiliary pipe pass through the surface of the guide plate, which can increase the heat transfer efficiency and further contribute to the heating of the petrochemical raw material fluid.

[0026] 6. The spiral plate heat exchanger for petrochemical industry uses a sealing gasket and an elastic ring to support the filling ring, so that the surface of the filling ring is embedded in the inside of the circular groove, and the curved surface contact can be used to perform a labyrinth-type preliminary seal on the connection between the first end cover, the second end cover and the two ends of the heat exchange tank. The sealing gasket is located at the end of the heat exchange tank and is squeezed, so it can be sealed again, and it is not easy to leak. The bolt is passed through the center of the positioning hole to position the sealing gasket, and it is not easy to deviate.

[0027] 7. The spiral plate heat exchanger for petrochemical industry is injected with hot fluid from the first end cover and flows into the interior of the second end cover through the main pipeline and the auxiliary 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. The flow direction of the hot fluid can be 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.

[0028] 8. The spiral plate heat exchanger for petrochemical industry injects another fluid that needs heat exchange from the circular tube, and allows the other fluid to be transported into the bent tube through the heated circular channel, so that 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. The heated circular channel is circular in shape, which can increase the contact area, so that the other fluid in the heated circular channel is quickly heated. Combined with the injection of petrochemical raw material fluid from the oil inlet pipe, heat exchange can be performed on multiple fluids, fully utilizing the flow of the fluid and fully absorbing and utilizing the heat.

[0029] 9. The spiral plate heat exchanger for petrochemical industry uses a bent tube to pass through the middle of the surface of the oil inlet pipe, so that the petrochemical raw material fluid in the oil inlet pipe can be preheated through the heat transfer principle, and the top end of the strip heat conduction plate extends to the inside of the first end cover, so that the temperature of the strip heat conduction plate can be increased, thereby insulating the bent tube, and one end of the strip heat conduction 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 2 This is a schematic diagram of the structure of the spiral plate heat exchanger for petrochemical industry according to the present invention when viewed from above;

[0032] Figure 3 This is a schematic diagram of the internal structure of the spiral plate heat exchanger for petrochemical industry of the present invention;

[0033] Figure 4 It is a schematic diagram of the connection structure between the heat exchange mechanism and the heat exchange tank of the present invention;

[0034] Figure 5 It is a schematic diagram of the overall structure of the heat exchange mechanism of the present invention;

[0035] Figure 6 It is a schematic diagram of the connection structure between the heating mechanism and the heat exchange tank of the present invention;

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

[0037] Figure 8 This is a schematic diagram of the disassembled structure of the sealing component of the present invention;

[0038] Fig. 9 It is a schematic diagram of the connection structure between the auxiliary mechanism of the present invention, the first end cover and the oil inlet pipe;

[0039] Fig.10 It is a schematic structural diagram of the auxiliary mechanism of the present invention when viewed from above.

[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. auxiliary pipeline; 55. conical bucket; 56. sealing assembly; 57. bolt; 561. circular groove; 562. sealing gasket; 563. positioning hole; 564. elastic ring; 565. filling ring; 61. guide plate; 62. strip hole; 63. supporting square rod; 64. diamond cutting piece; 65. arc blade; 71. round tube; 72. bent tube; 73. heated circular channel; 74. strip heat conduction plate; 75. connecting piece. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0043] A spiral plate heat exchanger for petrochemical industry, comprising a heat exchange tank 1 and a base 2 fixedly mounted at a position corresponding to the bottom of the outer cylindrical surface of the heat exchange tank 1, an oil inlet pipe 3 is connected to the side of the bottom of the outer cylindrical surface of the heat exchange tank 1, an oil outlet pipe 4 is connected to the side of the top of the outer cylindrical surface of the heat exchange tank 1, and a heating mechanism 5 is installed in the middle of the heat exchange tank 1;

[0044] The oil inlet pipe 3 and the oil outlet pipe 4 are both installed vertically, with the opening of the oil inlet pipe 3 facing downward and the opening of the oil outlet pipe 4 facing upward.

[0045] A heat exchange mechanism 6, which is used to conduct heat to the petroleum fluid raw material, and the heat exchange mechanism 6 is installed in the middle of the heat exchange tank 1;

[0046] Among them, the heat exchange mechanism 6 includes a guide plate 61 and a strip hole 62. The edge 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 installed in the middle of the heat exchange tank 1. The strip hole 62 is opened at the spiral surface of the guide plate 61. A support square rod 63 is fixedly connected to the surface of the guide plate 61 near the oil inlet pipe 3. A diamond cutting piece 64 is fixedly installed at one end of the support square rod 63 away from the guide plate 61. An arc blade 65 is fixedly connected to the surface of the guide plate 61 near the strip hole 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, the petrochemical raw material fluid can flow in a spiral shape, thereby increasing the heating time of the petrochemical raw material fluid.

[0047] The strip holes 62 are evenly arranged on the spiral surface of the guide plate 61, and the arc blades 65 are evenly installed on the surface of the guide plate 61 and close to the strip holes 62. When the petrochemical raw material fluid flows in the heat exchange tank 1, and under the guidance of the guide plate 61, the petrochemical raw material fluid flows along the surface of the guide plate 61, and part of the petrochemical raw material fluid passes through the strip holes 62. When the petrochemical raw material fluid contacts the arc blades 65, the petrochemical raw material fluid flowing in strands can be divided to reduce the resistance of the fluid during flow, thereby ensuring that the petrochemical raw material fluid flows smoothly inside the heat exchange tank 1, and under the action of the fluid pressure, the petrochemical raw material fluid flows out from the oil outlet pipe 4.

[0048] By utilizing the support of the supporting square rod 63, with the tip of the diamond-shaped cutting blade 64 directed toward the inside of the oil inlet pipe 3, and by providing a blade bevel at the edge of the surface of the diamond-shaped cutting blade 64, the contact area between the diamond-shaped cutting blade 64 and the petrochemical raw material fluid can be reduced, so that the pressure is increased, which makes it easier to divide the petrochemical raw material fluid entering the heat exchange tank 1, and can weaken the impact force of the petrochemical raw material fluid on the end of the guide plate 61.

[0049] The bottom end of the diamond-shaped cutting blade 64 extends to the inside of the oil inlet pipe 3, and a blade bevel is provided at the edge of the surface of the diamond-shaped cutting blade 64. The diamond-shaped cutting blade 64 is installed at an angle. By installing the diamond-shaped cutting blade 64 at an angle, the flow direction of the petrochemical raw material fluid is consistent with the inclination direction of the diamond-shaped cutting blade 64, thereby reducing the obstruction to the flow of the petrochemical raw material fluid.

[0050] The second embodiment is based on the first embodiment. 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 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 close to one end of the oil outlet pipe 4 by the bolts 57. The second end cover 52 is fixedly installed on the heat exchange tank 1 and close to one end of the oil inlet pipe 3 by the bolts 57. A main pipeline 53 is fixedly connected to the center of the heat exchange tank 1. A secondary pipeline 54 is fixedly installed in the heat exchange tank 1 and close to the guide plate 61. The inlet of the main pipeline 53 and the inlet of the secondary pipeline 54 are fixedly connected to a conical bucket 55. A sealing assembly 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 uses the inlet of the main pipe 53 and the inlet of the auxiliary pipe 54 to install the conical bucket 55. The conical bucket 55 can increase the amount of hot fluid entering, so that the inside of the main pipe 53 and the inside of the auxiliary pipe 54 are filled with hot fluid, and is evenly installed in the inside of the heat exchange tank 1 through the auxiliary pipe 54, so that the petrochemical raw material fluid in the heat exchange tank 1 can be heated evenly, and combined with the main pipe 53 and the auxiliary pipe 54 passing through the surface of the 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 pipe 53 and the auxiliary pipe 54 flows into the inside of the second end cover 52 and is discharged to the outside.

[0052] The hot fluid is injected from the first end cover 51 and flows into the interior of the second end cover 52 through the main pipeline 53 and the auxiliary pipeline 54, 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. The flow direction of the hot fluid can be opposite to the flow direction of the petrochemical raw material fluid, and the heat transfer time is increased.

[0053] The main pipe 53 passes through the center of the guide plate 61 , the auxiliary pipes 54 pass through the surface of the guide plate 61 , and the auxiliary pipes 54 are evenly distributed along the circumferential direction of the central axis of the main pipe 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 close to the conical bucket 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 close to 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 close to 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 close to the circular groove 561. The bolt 563 is inserted into the sealing gasket 562 through the center of the positioning hole 563. The first end cover 51 and the second end cover 52 are fixed to the two ends of the heat exchange tank 1, and 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 in the inside of the circular groove 561, and the connection between the first end cover 51 and the second end cover 52 and the two ends of the heat exchange tank 1 can be preliminarily sealed in a labyrinth manner by using the curved surface contact, and the sealing gasket 562 is located at the end of the heat exchange tank 1 and is squeezed, so that it can be sealed again, and it is not easy to leak, and the bolt 57 is passed through the center of the positioning hole 563 to position the sealing gasket 562.

[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 is based on the first and second embodiments. 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 cylindrical surface of the heat exchange tank 1. The auxiliary mechanism 7 includes a round tube 71 and a bent tube 72. The round tube 71 is fixedly installed on the top of the surface of the first end cover 51, and the bent tube 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 tube 72 is installed directly below the heat exchange tank 1. The bent tube 72 passes through the middle of the surface of the oil inlet pipe 3. A heated circular channel 73 is connected between the bottom end of the round tube 71 and the top end of the bent tube 72. The heated circular channel 73 is installed in the middle of the inner cavity of the first end cover 51, and the bottom of the surface of the first end cover 51 and the surface of the oil inlet pipe 3 and near the bent tube 72 are fixed. A strip heat conducting plate 74 is fixedly connected, and a connecting piece 75 is fixedly installed in the middle of the surface of the strip heat conducting plate 74 and near the bending tube 72. The staff injects another fluid that needs heat exchange from the round tube 71, and allows the other fluid to enter the bending tube 72 through the heated circular channel 73. When the other fluid flows through the inside of the heated circular channel 73, the other fluid exchanges heat with the hot fluid in the first end cover 51. The heated circular channel 73 is circular, which can increase the contact area, so that the other fluid in the heated circular channel 73 is quickly heated. Combined with the injection of petrochemical raw material fluid from the oil inlet pipe 3, heat exchange can be performed on multiple fluids.

[0058] There are two strip heat conducting plates 74, and the two strip heat conducting plates 74 are symmetrically installed along the bent tube 72. The top end of the strip heat conducting plate 74 extends to the inside of the first end cover 51. The connecting piece 75 is evenly installed in the middle of the surface of the strip heat conducting plate 74 and close to the bent tube 72. As another fluid in the bent tube 72 is heated and passes through the middle of the surface of the oil inlet pipe 3 in combination with the bent tube 72, the petrochemical raw material fluid in the oil inlet pipe 3 can be preheated through the heat transfer principle. The top end of the strip heat conducting plate 74 extends to the inside of the first end cover 51, so that the heated temperature of the strip heat conducting plate 74 can be increased, thereby keeping the bent tube 72 warm. One end of the strip 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] When in use, the staff first injects the hot fluid from the first end cover 51, and uses the inlet of the main pipe 53 and the inlet of the auxiliary pipe 54 to install the conical bucket 55. The conical bucket 55 can increase the amount of hot fluid entering, so that the inside of the main pipe 53 and the inside of the auxiliary pipe 54 are filled with hot fluid, and the conical bucket 55 is evenly installed in the heat exchange tank 1 through the auxiliary pipe 54, so that the petrochemical raw material fluid in the heat exchange tank 1 can be heated evenly, and the main pipe 53 and the auxiliary pipe 54 pass through the surface of the guide plate 61, so that the heat transfer efficiency can be increased, which is further helpful for heating the petrochemical raw material fluid, and the fluid in the main pipe 53 and the auxiliary pipe 54 flows into the inside of the second end cover 52 and is discharged to the outside;

[0060] The first end cover 51, the second end cover 52 and the two ends of the heat exchange tank 1 are fixed by bolts 57, and 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 in the inside of the circular groove 561, and the connection between the first end cover 51, the second end cover 52 and the two ends of the heat exchange tank 1 can be preliminarily sealed in a labyrinth manner by using the curved surface contact, and the sealing gasket 562 is located at the end of the heat exchange tank 1 and is squeezed, so that it can be sealed again, and it is not easy to leak, and the bolt 57 is passed through the center of the positioning hole 563 to position the sealing gasket 562;

[0061] At the same time, the staff injects the petrochemical raw material fluid from the oil inlet pipe 3 into the interior of the heat exchange tank 1, and uses the support of the supporting square rod 63, and the tip of the diamond-shaped cutting blade 64 is directed toward the interior of the oil inlet pipe 3, and the edge of the diamond-shaped cutting blade 64 is provided with a blade bevel, which can reduce the contact area between the diamond-shaped cutting blade 64 and the petrochemical raw material fluid, so that the pressure is increased, which is convenient for dividing the petrochemical raw material fluid entering the heat exchange tank 1, and can weaken the impact force of the petrochemical raw material fluid on the end of the guide plate 61, and 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, 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 under the guidance of the guide plate 61, the petrochemical raw material fluid flows along the surface of the guide plate 61, and part of the petrochemical raw material fluid passes through the strip hole 62, and when the petrochemical raw material fluid contacts the arc blade 65, the petrochemical raw material fluid flowing in strands can be divided, reducing the resistance of the fluid during flow, ensuring that the petrochemical raw material fluid flows smoothly inside the heat exchange tank 1, and under the action of the fluid pressure, the petrochemical raw material fluid flows out from the oil outlet pipe 4;

[0063] The hot fluid is injected from the first end cover 51 and flows into the interior of the second end cover 52 through the main pipe 53 and the auxiliary pipe 54, 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, so that the flow direction of the hot fluid is opposite to that of the petrochemical raw material fluid, and the heat transfer time is increased;

[0064] Moreover, the staff injects another fluid that needs heat exchange from the circular tube 71, and allows the other fluid to be transported into the bent tube 72 through the heated circular channel 73. When the other fluid flows through the heated circular channel 73, the other fluid can exchange heat with the hot fluid in the first end cover 51. The heated circular channel 73 is circular in shape, which can increase the contact area, so that the other fluid in the heated circular channel 73 can be quickly heated. Combined with the injection of petrochemical raw material fluid from the oil inlet pipe 3, heat exchange can be performed on multiple fluids.

[0065] As the other fluid in the bent tube 72 is heated, and combined with the bent tube 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 of the strip heat conductive plate 74 extends to the inside of the first end cover 51, so that the heated temperature of the strip heat conductive plate 74 can be increased, thereby insulating the bent tube 72, and one end of the strip heat conductive 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.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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: include: A heat exchange tank (1), and a base (2) fixedly mounted at a position corresponding to the bottom of the outer cylindrical surface of the heat exchange tank (1), an oil inlet pipe (3) being connected to the side of the bottom of the outer cylindrical surface of the heat exchange tank (1), an oil outlet pipe (4) being connected to the side of the top of the outer cylindrical surface of the heat exchange tank (1), and a heating mechanism (5) being mounted in the middle of the heat exchange tank (1); A heat exchange mechanism (6), the heat exchange mechanism (6) is used to conduct heat to the petroleum fluid raw material, and the heat exchange mechanism (6) is installed in the middle of the heat exchange tank (1); The heat exchange mechanism (6) comprises a guide plate (61) and a strip 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-shaped and installed in the middle of the interior of the heat exchange tank (1); the strip hole (62) is provided on the spiral surface of the surface of the guide plate (61); a supporting square rod (63) is fixedly connected to the surface of the guide plate (61) near the oil inlet pipe (3); a diamond-shaped cutting blade (64) is fixedly installed at one end of the supporting square rod (63) away from the guide plate (61); and an arc-shaped blade (65) is fixedly connected to the surface of the guide plate (61) near the strip hole (62).

2. A spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The oil inlet pipe (3) and the oil outlet pipe (4) are both installed vertically, with the opening of the oil inlet pipe (3) facing downwards and the opening of the oil outlet pipe (4) facing upwards.

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

4. The spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The bottom end of the rhombus-shaped cutting blade (64) extends to the inside of the oil inlet pipe (3), and a blade bevel is provided at the edge of the surface of the rhombus-shaped cutting blade (64). The rhombus-shaped cutting blade (64) is installed at an angle.

5. The spiral plate heat exchanger for petrochemical industry according to claim 1, characterized in that: The heating mechanism (5) comprises a first end cover (51) and a second end cover (52), the edges of the surfaces of the first end cover (51) and the edges of the surfaces of the second end cover (52) are both installed with bolts (57), the first end cover (51) is fixedly installed on the surface of the heat exchange tank (1) and close to one end of the oil outlet pipe (4) by means of the bolts (57), the second end cover (52) is fixedly installed on the heat exchange tank (1) and close to one end of the oil inlet pipe (3) by means of the bolts (57), a main pipeline (53) is fixedly connected at the center of the interior of the heat exchange tank (1), a secondary pipeline (54) is fixedly installed at a position of the interior of the heat exchange tank (1) and close to the guide plate (61), the inlet of the main pipeline (53) and the inlet of the secondary pipeline (54) are both fixedly connected with a conical bucket (55), and a sealing assembly (56) is installed between the first end cover (51) and the heat exchange tank (1).

6. A spiral plate heat exchanger for petrochemical industry according to claim 5, characterized in that: The main pipeline (53) passes through the center of the guide plate (61), the secondary pipeline (54) passes through the surface of the guide plate (61), and the secondary pipeline (54) is evenly distributed along the circumferential direction of the central axis of the main pipeline (53).

7. The spiral plate heat exchanger for petrochemical industry according to claim 5, characterized in that: The sealing assembly (56) comprises a circular groove (561) and a sealing gasket (562). The circular groove (561) is provided on the inner wall of the first end cover (51) and close to the conical bucket (55). The sealing gasket (562) is installed between the first end cover (51) and the heat exchange tank (1). A positioning hole (563) is provided on the surface of the sealing gasket (562) and close to 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 close to 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 close to the circular groove (561).

8. The spiral plate heat exchanger for petrochemical industry according to claim 7, 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).

9. The spiral plate heat exchanger for petrochemical industry according to claim 5, characterized in that: An auxiliary mechanism (7) is installed between the first end cover (51) and the oil inlet pipe (3) and near the bottom of the outer circumferential surface of the heat exchange tank (1). The auxiliary mechanism (7) comprises a round tube (71) and a bent tube (72). The round tube (71) is fixedly installed on the top of the surface of the first end cover (51). The bent tube (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). The bent tube (72) is installed directly below the heat exchange tank (1). The bent tube (72) extends from the oil inlet pipe to the bottom of the surface of the first end cover (51). The first end cover (51) has a heat transfer plate (74) which passes through the middle of the surface of the oil inlet pipe (3), a heated circular channel (73) is connected between the bottom end of the circular tube (71) and the top end of the bent tube (72), the heated circular channel (73) is installed in the middle of the inner cavity of the first end cover (51), a strip heat conduction 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 close to the bent tube (72), and a connecting piece (75) is fixedly installed in the middle of the surface of the strip heat conduction plate (74) and close to the bent tube (72).

10. A spiral plate heat exchanger for petrochemical industry according to claim 9, characterized in that: There are two strip-shaped heat conducting plates (74), and the two strip-shaped heat conducting plates (74) are symmetrically installed along the bent tube (72). The top end of the strip-shaped heat conducting plate (74) extends to the inside of the first end cover (51), and the connecting piece (75) is evenly installed in the middle of the surface of the strip-shaped heat conducting plate (74) and close to the bent tube (72).

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