High-temperature gas-phase U-shaped tubular condenser
By designing a high-temperature gas-phase U-tube condenser, the problem of weld failure and leakage caused by large temperature differences in shell and tube heat exchangers was solved, achieving a safe, stable, and efficient heat transfer effect.
Patent Information
- Application Number
- CN202520276983.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Traditional shell-and-tube heat exchangers are prone to detachment and leakage during the distillation of heat transfer oil due to large temperature differences, and are also susceptible to oxidation and corrosion during periods of downtime, affecting their service life and safety.
A high-temperature gas-phase U-tube condenser is adopted, which provides thermal expansion space through the U-tube bundle. Combined with the tangential hot oil and gas inlet and the baffle design, it promotes the rotational flow of hot oil and gas, increases the residence time and mixing effect, and improves the heat transfer efficiency.
It effectively mitigates the risk of thermal stress, avoids weld debonding and leakage, improves heat exchange efficiency, and ensures the safe and stable operation of the equipment.
Smart Images
Figure CN223814986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat exchanger technical field especially relates to a high temperature gas phase U type pipe type condenser. BACKGROUND
[0002] Traditional heat conducting oil rectification device usually adopts column pipe type heat exchanger to cool, but this heat exchanger still has significant defects when facing the violent temperature change in heat conducting oil rectification process. In the rectification process, when the rectification kettle temperature reaches the initial distillation point, the distillate will be taken out, and the temperature of the hot oil gas taken out will be greater than 150 DEG C, when the rectification operation is close to the end, the temperature of the hot oil gas taken out is highest and can even reach 330 DEG C, and the temperature of the cooling medium circulating water is always lower than 40 DEG C, and the huge temperature difference leads to the column pipe type heat exchanger to be prone to tube sheet unbonding and leakage accidents due to thermal stress problems. In addition, the intermittent operation characteristics of the rectification device can make the column pipe type heat exchanger remain a large amount of heat conducting oil, and during the period of non-use, the part of heat conducting oil is prone to oxidation corrosion, thereby shortening the service life of the heat exchanger, increasing the maintenance cost and safety risk. SUMMARY
[0003] Therefore, in order to solve the above problems, the utility model discloses a high temperature gas phase U type pipe type condenser, which comprises:
[0004] Pipe box;
[0005] Tube sheet, one side of the tube sheet is connected with the pipe box;
[0006] Cylinder, one end of the cylinder is provided with a hot oil gas inlet, the hot oil gas inlet is communicated with the inside of the cylinder, the axis of the hot oil gas inlet is tangent to the inner wall of the cylinder, and the other end of the cylinder is connected with the other side of the tube sheet;
[0007] U type tube bundle, the U type tube bundle is arranged in the inside of the cylinder.
[0008] In another preferred embodiment, the other end of the cylinder is provided with a gas outlet and a cold oil outlet, the gas outlet and the cold oil outlet are arranged close to the tube sheet, the gas outlet is arranged at the upper end of the cylinder, and the cold oil outlet is arranged at the lower end of the cylinder.
[0009] In another preferred embodiment, the end of the pipe box away from the tube sheet is provided with a hot water outlet and a cold water inlet, and the hot water outlet is located above the cold water inlet.
[0010] In another preferred embodiment, further comprising: a guide plate, the guide plate is arranged in the inside of the cylinder, and the guide plate is spirally sleeved on the periphery of the U type tube bundle.
[0011] In another preferred embodiment, the tube plate is provided with a first through hole and a second through hole, the water inlet end of the U-shaped tube bundle is connected with the first through hole, and the water outlet end of the U-shaped tube bundle is connected with the second through hole.
[0012] In another preferred embodiment, the tube box has two independent chambers inside, which are divided into a first chamber and a second chamber, the first through hole is communicated with the first chamber, and the second through hole is communicated with the second chamber.
[0013] In another preferred embodiment, the cold water inlet is communicated with the first chamber, and the hot water outlet is communicated with the second chamber.
[0014] In another preferred embodiment, the high-temperature gas phase U-shaped tube type condenser is arranged in an inclined manner from one end to the other end.
[0015] The utility model discloses a high-temperature gas phase U-shaped tube type condenser, which has the following advantages compared with the prior art: through the application of the utility model, the U-shaped tube bundle can provide sufficient thermal expansion space, thereby effectively relieving the thermal stress caused by temperature changes, ensuring the safe and stable operation of the device under the condition of large temperature difference of heat exchange medium, and avoiding the risk of easy welding leakage of the traditional tube type heat exchanger. In addition, the unique tangent line type hot oil gas inlet and the flow guide plate can make the hot oil gas flow in a rotating state in the cylinder, which is beneficial to increasing the residence time of the hot oil gas in the condenser, promoting the full mixing and heat transfer of the gas-liquid two-phase, and improving the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The utility model relates to a high-temperature gas phase U-shaped tube type condenser.
[0017] In the drawings:
[0018] 1, tube box;2, tube plate;3, cylinder;4, U-shaped tube bundle;31, hot oil gas inlet;32, gas outlet;33, cold oil outlet;11, hot water outlet;12, cold water inlet;13, first chamber;14, second chamber. DETAILED DESCRIPTION
[0019] The technical solutions of the utility model will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0020] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms such as ''up'', ''down'', ''left'', ''right'', ''inner'', ''outer'', ''front'', ''back'', ''horizontal direction'', ''vertical direction'' is the orientation or position relation shown based on the drawing, and is only for the convenience of describing the utility model, and is not indicated or implied that the indicated device or element must have a particular orientation, therefore it cannot be understood as the limitation of the utility model.
[0021] It needs to be specially pointed out that ''horizontal'', ''vertical'' in the utility model are all used for explaining approximate position relation, and not strict ''horizontal plane'' or ''vertical plane''.
[0022] As shown in Figure 1 , a high-temperature gas phase U-shaped tube type condenser of a preferred embodiment is shown, comprising:
[0023] Tube box 1;
[0024] Tube plate 2, one side of the tube plate 2 is connected with the tube box 1;
[0025] Cylinder body 3, one end of the cylinder body 3 is provided with hot oil gas inlet 31, the hot oil gas inlet 31 is communicated with the inside of the cylinder body 3, the axis of the hot oil gas inlet 31 is tangent to the inner wall of the cylinder body 3, the other end of the cylinder body 3 is connected with the other side of the tube plate 2;
[0026] U-shaped tube bundle 4, the U-shaped tube bundle 4 is arranged in the inside of the cylinder body 3.
[0027] Further, as a preferred embodiment, the hot oil gas inlet 31 is connected with the gas phase outlet pipeline of the rectifying kettle. Further, when the temperature of the rectifying kettle reaches the initial distillation point, the hot oil gas separated by fractional distillation will enter the hot oil gas inlet 31 from the gas phase outlet pipeline of the rectifying kettle, and then enter the cylinder body 3 from the hot oil gas inlet 31.
[0028] Further, as a preferred embodiment, the other end of the cylinder body 3 is provided with gas outlet 32 and cold oil outlet 33, the gas outlet 32 and the cold oil outlet 33 are both arranged close to the tube plate 2, the gas outlet 32 is arranged at the upper end of the cylinder body 3, and the cold oil outlet 33 is arranged at the lower end of the cylinder body 3.
[0029] Further, as a preferred embodiment, the gas outlet 32 is connected with the secondary heat exchanger. Further, the gas phase part left after the hot oil gas is condensed will enter the secondary heat exchanger from the gas outlet 32 to carry out condensation operation again, so as to improve the heat exchange efficiency of the hot oil gas.
[0030] Further, as a preferred embodiment, the cold oil outlet 33 is connected with the fraction receiving tank. Further, the cold oil formed after the hot oil gas is condensed can enter the fraction receiving tank from the cold oil outlet 33, so as to facilitate the collection of the cold oil.
[0031] Further, as a preferred embodiment, the pipe box 1 is provided with a hot water outlet 11 and a cold water inlet 12 at the end away from the tube plate 2, and the hot water outlet 11 is located above the cold water inlet 12.
[0032] Further, as a preferred embodiment, the hot water outlet 11 is connected with the return water pipe of the circulating water pipe, and the cold water inlet 12 is connected with the cold water supply pipe of the circulating water pipe.
[0033] Further, as a preferred embodiment, it further comprises a flow guide plate, which is arranged inside the cylinder body 3 and is spirally arranged on the periphery of the U-shaped tube bundle 4. Further, the flow guide plate is beneficial to increase the residence time of the hot oil gas in the cylinder body 3 and improve the heat exchange efficiency.
[0034] Further, as a preferred embodiment, the tube plate 2 is provided with a first through hole and a second through hole, the water inlet end of the U-shaped tube bundle 4 is connected with the first through hole, and the water outlet end of the U-shaped tube bundle 4 is connected with the second through hole.
[0035] Further, as a preferred embodiment, the tube plate 2 is divided into a first region and a second region by a middle part, the first through hole is located in the first region, and the second through hole is located in the second region.
[0036] Further, as a preferred embodiment, the inside of the pipe box 1 has two independent chambers, which are divided into a first chamber 13 and a second chamber 14, the first through hole is communicated with the first chamber 13, and the second through hole is communicated with the second chamber 14. Further, the first chamber 13 and the second chamber 14 are independently arranged, which is beneficial to separate the hot water after heat exchange from the cold water without heat exchange, so that the hot water after heat exchange is not mixed with the cold water without heat exchange, and the heat exchange efficiency between the hot oil gas and the cooling medium is affected.
[0037] Further, as a preferred embodiment, the cold water inlet 12 is communicated with the first chamber 13, and the hot water outlet 11 is communicated with the second chamber 14. Further, the cold water in the circulating water pipe enters the cold water inlet 12 from the cold water supply pipe, then enters the first chamber 13 from the cold water inlet 12, and then enters the water inlet end of the U-shaped tube bundle 4 through the first chamber 13. The cold water exchanges heat with the hot oil gas in the cylinder body 3 in the U-shaped tube bundle 4 to become hot water, and then enters the second chamber 14 from the water outlet end of the U-shaped tube bundle 4, and then enters the hot water outlet 11 from the second chamber 14, and then enters the return water pipe of the circulating water pipe from the hot water outlet 11, so as to realize the recycling of the cooling medium.
[0038] Further, as a preferred embodiment, the high-temperature gas-phase U-shaped tube condenser is arranged in an inclined manner from one end to the other end.
[0039] Further, as a preferred embodiment, the high-temperature gas-phase U-tube condenser is arranged downwardly inclined from the end of the cylinder 3 away from the tube box 1 to the end of the tube box 1 away from the cylinder 3, and the inclination angle is preferably 3°. Further, the inclined arrangement of the high-temperature gas-phase U-tube condenser makes the cold oil outlet 33 also arranged downwardly inclined, thereby facilitating the reduction of material residues and the discharge of the cold oil formed after the condensation of the hot oil gas from the cold oil outlet 33.
[0040] The working principle of the utility model is as follows: when the distillation kettle temperature reaches the initial distillation point, and the distillate is collected, the hot oil gas collected is introduced into the cylinder 3 from the hot oil gas inlet 31. Since the hot oil gas is tangent to the inner wall of the cylinder 3 when it enters the cylinder 3, the hot oil gas can rotate spirally in the cylinder 3 and rotate in cooperation with the spiral guide plate. The cold oil formed after the heat exchange between the hot oil gas and the cooling medium in the U-tube bundle 4 is introduced into the distillate receiving tank from the cold oil outlet 33. The gas phase part left after the condensation of the hot oil gas is introduced into the secondary heat exchanger from the gas outlet 32 for condensation operation again.
[0041] The above is only a preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that any equivalent replacement and obvious changes made according to the content of the utility model specification and drawings should be included in the protection scope of the utility model.
Claims
1. A high temperature gas phase U-tube condenser characterized by, It comprises: a tube box; a tube plate, one side of which is connected with the tube box; a cylinder, one end of which is provided with a hot oil gas inlet, the axis of which is tangent to the inner wall of the cylinder, the other end of which is connected with the other side of the tube plate; a U-shaped tube bundle arranged inside the cylinder.
2. The high temperature gas phase U-tube condenser of claim 1, wherein, The other end of the cylinder is provided with a gas outlet and a cold oil outlet, both of which are arranged close to the tube plate, the gas outlet is arranged at the upper end of the cylinder, and the cold oil outlet is arranged at the lower end of the cylinder.
3. The high temperature gas phase U-tube condenser of claim 1, wherein, The tube box is provided with a hot water outlet and a cold water inlet at the end away from the tube plate, and the hot water outlet is located above the cold water inlet.
4. The high temperature gas phase U-tube condenser of claim 1, wherein It also comprises: a guide plate arranged inside the cylinder, which is spirally arranged on the periphery of the U-shaped tube bundle.
5. The high temperature gas phase U-tube condenser of claim 3, wherein, The tube plate is provided with a first through hole and a second through hole, the water inlet end of the U-shaped tube bundle is connected with the first through hole, and the water outlet end of the U-shaped tube bundle is connected with the second through hole.
6. The high temperature gas phase U-tube condenser of claim 5, wherein, The inside of the tube box has two independent cavities, which are divided into a first cavity and a second cavity, the first through hole is communicated with the first cavity, and the second through hole is communicated with the second cavity.
7. The high temperature gas phase U-tube condenser of claim 6, wherein, The cold water inlet is communicated with the first cavity, and the hot water outlet is communicated with the second cavity.
8. The high temperature gas phase U-tube condenser of claim 1, wherein, The high-temperature gas-phase U-shaped tube condenser is arranged in an inclined manner from one end to the other end.