Double-effect heat exchanger

Abstract

The double-effect heat exchanger comprises a barrel and a pressing plate assembly, a heat exchange block is arranged in the barrel, an upper end socket and a lower end socket are arranged at the upper end and the lower end of the barrel respectively, a feeding port is formed in the upper end socket, and a discharging port is formed in the lower end socket; a cooling water inlet communicated with the heat exchange block is formed in the upper end of the side wall of the barrel, and a cooling water outlet communicated with the heat exchange block is formed in the lower end of the side wall of the barrel; a pressing plate assembly is arranged on the feeding hole; a bracket is arranged below the discharge hole; wherein a carbon fiber layer inner shell is arranged on the inner wall of the cylinder body. The carbon fiber layer inner shell is arranged on the inner side of the barrel and used for enhancing the graphite layer shell in the barrel of the heat exchanger, so that the whole inner shell has the corrosion resistance of graphite, and carbon fibers can effectively enhance the strength of the graphite layer and prevent the graphite layer from being damaged due to the fact that the graphite material is a brittle material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat exchangers, and particularly relates to a double-effect heat exchanger. BACKGROUND

[0002] A heat exchanger is a device for transferring part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other many industrial productions. In chemical production, the heat exchanger can be used as a heater, cooler, condenser, evaporator and reboiler, and is widely applied. In recent years, double-effect energy-saving heat exchangers have also been used.

[0003] In the double-effect heat exchanger, both the pipe and the shell pass corrosive materials, and the shell material needs to be corrosion-resistant. Graphite material or steel lining Teflon can be selected. Due to the instantaneous negative pressure caused by operation, the Teflon is easily sucked when the steel lining Teflon is selected, which leads to damage and corrosion of the steel shell. CONTENT OF THE INVENTION

[0004] The application provides a double-effect heat exchanger to solve the above technical problems.

[0005] To solve the above technical problems, the application adopts one technical scheme: a double-effect heat exchanger, comprising a cylinder and a pressing plate assembly, a heat exchange block is arranged in the cylinder, upper and lower ends of the cylinder are respectively provided with an upper head and a lower head, a feeding port is arranged in the upper head, and a discharging port is arranged in the lower head; a cooling water inlet communicated with the heat exchange block is arranged at an upper end of a side wall of the cylinder, and a cooling water outlet communicated with the heat exchange block is arranged at a lower end of the side wall of the cylinder; the pressing plate assembly is arranged on the feeding port; a support is arranged below the discharging port; and a carbon fiber layer inner shell is arranged on an inner wall of the cylinder.

[0006] Further, the carbon fiber layer inner shell is coated with a graphite layer.

[0007] Further, the pressing plate assembly comprises an upper pressing plate and a lower pressing plate, the upper pressing plate is sleeved on the upper side of the feeding port, and the lower pressing plate is sleeved on the lower side of the discharging port; a first connecting hole is arranged on the outer side of the upper pressing plate, and a second connecting hole corresponding to the first connecting hole is arranged on the outer side of the lower pressing plate; and the first connecting hole and the second connecting hole are connected through a pull rod.

[0008] Further, a fastening nut is sleeved on the top of the pull rod, a first limiting plate and a second limiting plate are sequentially sleeved below the fastening nut, the first limiting plate and the second limiting plate are both located above the upper pressing plate, and a spring is arranged between the first limiting plate and the second limiting plate.

[0009] Further, a first outer plate is arranged at the side end of the upper head, and a first side plate is arranged at the upper side end of the cylinder; and the first outer plate and the first side plate are connected through a first bolt.

[0010] Further, the lower end of the cylinder body is provided with a second side plate, and the second side plate and the pressing plate are connected through a second bolt.

[0011] The beneficial effects of the present application are: the present application sets a carbon fiber layer inner shell on the inner side of the cylinder body for enhancing the graphite layer shell in the heat exchanger cylinder body, which not only makes the overall inner shell have the corrosion resistance of graphite, but also effectively enhances the strength of the graphite layer because the graphite material is a brittle material, and prevents the graphite layer from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of an embodiment of the double-effect heat exchanger of the present application;

[0013] Figure 2 is Figure 1 a structural schematic diagram of region A in

[0014] Figure 3 is Figure 1 a structural schematic diagram of region B in

[0015] Figure 4 is Figure 1 a structural schematic diagram of region C in DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0017] As Figures 1-4 shown, the present application provides a double-effect heat exchanger, which comprises a cylinder body 1 and a pressing plate assembly 2, the cylinder body 1 is provided with a heat exchange block 3, the upper and lower ends of the cylinder body 1 are respectively provided with an upper head 4 and a lower head 5, the upper head 4 is provided with a feed inlet 41, and the lower head 5 is provided with a discharge outlet 51; the upper end of the side wall of the cylinder body 1 is provided with a cooling water inlet 11 which is communicated with the heat exchange block 3, and the lower end of the side wall of the cylinder body 1 is provided with a cooling water outlet 12 which is communicated with the heat exchange block 3; the pressing plate assembly 2 is arranged above the feed inlet 41; a support 7 is arranged below the discharge outlet 51; wherein the inner wall of the cylinder body 1 is provided with a carbon fiber layer inner shell 6. The upper head 4 and the lower head 5 in the above design can seal the cylinder body 1 from the top and bottom, so that the feed inlet 41 and the discharge outlet 51 are arranged in the head for flowing in or flowing out of the corrosive liquid, and the heat exchange block 3 is communicated with the cooling water inlet 11 and the cooling water outlet 12 to exchange heat with the corrosive liquid inside, thereby completing the heat exchange treatment. Meanwhile, the carbon fiber layer can effectively increase the strength of the inside of the cylinder body 1

[0018] The carbon fiber layer inner shell 6 is coated with a graphite layer 8. Since the inflowing liquid is generally an industrial chemical material, it has a certain corrosive property. The graphite layer 8 made of graphite material can effectively protect the inner wall of the cylinder 1 from corrosion, and the inner shell made of carbon fiber material can effectively increase the strength of the graphite layer 8 and protect the graphite layer 8 from damage.

[0019] The pressing plate assembly 2 includes an upper pressing plate 21 and a lower pressing plate 22, the upper pressing plate 21 is sleeved on the upper side of the feed port 41, and the lower pressing plate 22 is sleeved on the lower side of the discharge port 51; wherein the outer side of the upper pressing plate 21 is provided with a first connecting hole 23, and the outer side of the lower pressing plate 22 is provided with a second connecting hole 24 corresponding to the first connecting hole 23; wherein the first connecting hole 23 and the second connecting hole 24 are connected by a pull rod 25. The upper pressing plate 21 and the lower pressing plate 22 in the above design are connected by the pull rod 25, so that the upper and lower pressing plates 22 can tightly press the upper and lower heads 5, thereby tightly pressing the heat exchange blocks 3 inside the cylinder 1, and ensuring the overall heat exchange effect.

[0020] The bottom of the pull rod 25 is sleeved with a fastening nut 26, the lower side of the fastening nut 26 is sequentially sleeved with a first limiting plate 27 and a second limiting plate 28, and the first limiting plate 27 and the second limiting plate 28 are located above the upper pressing plate 21; a spring 29 is arranged between the first limiting plate 27 and the second limiting plate 28. The top of the pull rod 25 in the above design is provided with a thread for sleeving the fastening nut 26, the fastening nut 26 is tightened downward, the first limiting plate 27 is pressed downward to compress the spring 29, so that the upper pressing plate 21 and the lower pressing plate 22 are pressed by the elastic force of the spring 29 to tightly press the heat exchange blocks 3 inside the cylinder 1.

[0021] The upper head 4 is provided with a first outer plate 42, and the upper side of the cylinder 1 is provided with a first side plate 13; the first outer plate 42 and the first side plate 13 are connected by a first bolt 14. The first bolt 14 in the above design can stably connect the upper head 4 and the cylinder 1.

[0022] The lower side of the cylinder 1 is provided with a second side plate 15, and the second side plate and the lower pressing plate 22 are connected by a second bolt 16. The second bolt 16 in the above design can effectively connect the cylinder 1 and the lower pressing plate 22.

[0023] The specific working mode is that the cooling water inlet 11 and the cooling water outlet 12 on the upper and lower sides of the outer wall of the cylinder 1 are connected to the external cooling water assembly. The chemical raw materials that need to be cooled enter the cylinder 1 from the feed port, flow through the heat exchange blocks 3 for heat exchange and cooling, and then are discharged from the discharge port 51. The inflowing liquid is generally an industrial chemical material, which has a certain corrosive property. The graphite layer 8 made of graphite material can effectively protect the inner wall of the cylinder 1 from corrosion, and the inner shell made of carbon fiber material can effectively increase the strength of the graphite layer 8 and protect the graphite layer 8 from damage.

[0024] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A double-effect heat exchanger, characterized in that, The application relates to a heat exchange device. The device comprises a cylinder and a pressing plate assembly, a heat exchange block is arranged in the cylinder, upper and lower ends of the cylinder are respectively provided with an upper end cover and a lower end cover, a feeding port is arranged in the upper end cover, and a discharging port is arranged in the lower end cover; a cooling water inlet communicated with the heat exchange block is arranged at an upper end of a side wall of the cylinder, and a cooling water outlet communicated with the heat exchange block is arranged at a lower end of the side wall of the cylinder; a pressing plate assembly is arranged above the feeding port; a support is arranged below the discharging port; and a carbon fiber layer inner shell is arranged on an inner wall of the cylinder.

2. A double-effect heat exchanger according to claim 1, characterized in that The carbon fiber layer inner shell is coated with a graphite layer.

3. A double-effect heat exchanger as claimed in claim 1, wherein The pressing plate assembly comprises an upper pressing plate and a lower pressing plate, the upper pressing plate is sleeved on the upper side of the feeding port, and the lower pressing plate is sleeved on the lower side of the discharging port; a first connecting hole is arranged on the outer side of the upper pressing plate, a second connecting hole corresponding to the first connecting hole is arranged on the outer side of the lower pressing plate; the first connecting hole and the second connecting hole are connected through a pull rod.

4. A double-effect heat exchanger according to claim 3, wherein A fastening nut is sleeved on the top of the pull rod, a first limiting plate and a second limiting plate are sequentially sleeved below the fastening nut, the first limiting plate and the second limiting plate are both arranged above the upper pressing plate, and a spring is arranged between the first limiting plate and the second limiting plate.

5. A double-effect heat exchanger as claimed in claim 1, wherein A first outer plate is arranged at the side end of the upper end cover, and a first side plate is arranged at the upper side end of the cylinder; the first outer plate and the first side plate are connected through a first bolt.

6. A double-effect heat exchanger as claimed in claim 3, wherein A second side plate is arranged at the lower side end of the cylinder, and the second side plate and the lower pressing plate are connected through a second bolt.

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