CN211847827U - Bottom oil cooling system - Google Patents
Bottom oil cooling system Download PDFInfo
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- CN211847827U CN211847827U CN202020337524.0U CN202020337524U CN211847827U CN 211847827 U CN211847827 U CN 211847827U CN 202020337524 U CN202020337524 U CN 202020337524U CN 211847827 U CN211847827 U CN 211847827U
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Abstract
The utility model discloses a bottom oil cooling system, which comprises an oil supply pump, an expansion tank, a circulation loop, an oil storage tank and a blow-off pipe which are mutually communicated, wherein the circulation loop comprises an oil-gas separator, a circulation pump, a bottom oil cooler and a heat-conducting oil cooler which are sequentially communicated; the tube side of the bottom oil cooler is communicated with the circulation loop, a bottom oil temperature sensor is arranged at the communication position of the oil outlet of the shell side of the bottom oil cooler and the bottom oil pipeline of the pressure reduction tower, a bottom oil cooling bypass is connected with the bottom oil cooler in parallel, and a bottom oil bypass regulating valve is arranged at the communication position of the tail end of the bottom oil cooling bypass and the circulation loop; the heat conducting oil cooler is characterized in that a heat conducting oil temperature sensor is arranged at the position where a tube pass of the heat conducting oil cooler is communicated with the circulating loop, a shell pass of the heat conducting oil temperature sensor is communicated with an external cooling water pipeline, a heat conducting oil cooling bypass is connected with the heat conducting oil cooler in parallel, and a heat conducting oil bypass adjusting valve is arranged at the position where the tail end of the heat conducting oil cooling bypass is communicated with the circulating loop. The bottom oil cooling system can avoid pipeline leakage and ensure stable operation of the system.
Description
Technical Field
The utility model relates to a decompression tower bottom oil cooling circulation system technical field, in particular to bottom oil cooling system.
Background
In the general technical field of pipeline heat exchange, a tube side refers to a medium circulation space in a pipeline, and a shell side refers to a medium circulation space between the outside of the pipeline and a heat exchanger shell.
In the current refined wax processing production process, a cooling pipeline system is generally needed to cool the hydrogenation bottom oil. Under general working conditions, the temperature of hydrogenation bottom reducing oil is about 280 ℃, the conventional heat exchange system generally adopts circulating cooling water circulating in a shell pass to directly exchange heat with high-temperature hot oil circulating in a tube pass so as to cool the high-temperature hot oil, and the joints of the components are often leaked due to the deformation of the equipment structure caused by overlarge temperature difference at the tube bundle and the end socket of the heat exchanger, so that the adverse effect is caused on the circulating operation of related equipment and pipelines, and the operation efficiency and the stability of the whole process system are severely restricted.
Therefore, how to avoid the pipeline leakage caused by the deformation of the pipeline component of the cooling system due to the overlarge temperature difference and ensure the stable operation of the bottom oil cooling system of the decompression tower is an important technical problem which needs to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bottom oil cooling system, this bottom oil cooling system can effectively avoid cooling system pipeline part to lead to the pipeline to leak because of the too big production of the difference in temperature warp, guarantees the bottom oil cooling system steady operation of decompression tower.
In order to solve the technical problem, the utility model provides a bottom oil cooling system, include the fuel feed pump with upstream conduction oil supply equipment intercommunication, the low reaches intercommunication of fuel feed pump has the inflation groove, the low reaches intercommunication of inflation groove has circulation circuit, circulation circuit includes oil and gas separator, circulating pump, bottom oil cooler and the conduction oil cooler that communicate in order, oil and gas separator respectively with the inflation groove with the conduction oil cooler intercommunication, the low reaches of inflation groove still communicates with the oil storage tank that is parallelly connected with circulation circuit, still include simultaneously with the oil storage tank and the blow off pipe of circulation circuit intercommunication;
the tube side of the bottom oil cooler is communicated with the circulation loop, the shell side of the bottom oil cooler is communicated with a pressure reduction tower bottom oil pipeline, a bottom oil temperature sensor is arranged at the communication position of the bottom oil cooler and the pressure reduction tower bottom oil pipeline, a bottom oil cooling bypass which is connected with the bottom oil cooler in parallel is communicated between the circulation pump and the heat conduction oil cooler, and a bottom oil bypass regulating valve which is matched with the bottom oil temperature sensor is arranged at the communication position of the tail end of the bottom oil cooling bypass and the circulation loop;
the pipe side of the heat conduction oil cooler is communicated with the circulation loop, the shell side of the heat conduction oil cooler is communicated with an external cooling water pipeline, a heat conduction oil temperature sensor is arranged at the communication position of the heat conduction oil cooler and the circulation loop, a heat conduction oil cooling bypass connected with the heat conduction oil cooler in parallel is communicated between the bottom oil cooler and the oil-gas separator, and a heat conduction oil bypass adjusting valve matched with the heat conduction oil temperature sensor is arranged at the communication position of the tail end of the heat conduction oil cooling bypass and the circulation loop.
Preferably, an emergency oil discharge pipeline which can discharge heat conduction oil from the circulation loop into the oil storage tank is communicated between the circulation loop and the oil storage tank, a communication position of the emergency oil discharge pipeline and the circulation loop is located between the circulation pump and the bottom oil cooler, an emergency oil discharge valve is arranged on the emergency oil discharge pipeline, and an oil outlet of a shell pass of the bottom oil cooler is communicated with a bottom oil pipeline of the pressure reduction tower through an oil return valve.
Preferably, the bottom oil bypass regulating valve and the heat transfer oil bypass regulating valve are both electric control three-way valves.
Above-mentioned background art relatively, the utility model provides a bottom oil cooling system, in its operation, in with conduction oil pump sending to low reaches pipeline through the fuel feeding pump, and let in the circulation circuit via the expansion tank, later in via the circulating pump pressurization pump sending to bottom oil cooler's tube side once more, so that carry out the heat exchange with the bottom oil in bottom oil cooler's the shell side, make the bottom oil cool down rapidly, accomplish the heat exchange and cool down to the bottom oil of reasonable temperature and be sent back again in the decompression tower for follow-up technology circulation use, in this process, bottom oil temperature sensor real-time supervision bottom oil cooler's oil-out department sends back the bottom oil temperature in the decompression tower, so that the staff is according to the temperature variation of bottom oil. The pipeline aperture of in time adjusting bottom oil bypass governing valve, the realization is to the flow control of the tube side of bottom oil cooling bypass and bottom oil cooler, and with this realization to the accurate control of the interior fluid heat exchange degree of bottom oil cooler, thereby bottom oil temperature control in the decompression tower is sent back to bottom oil department with bottom oil cooler is at reasonable within range, avoid leading to the relevant part of equipment pipeline to warp or damage because of the bottom oil high temperature, cause the fluid to leak, and carry out direct heat exchange through conduction oil and bottom oil and effectively avoided because of adopting cooling water and bottom oil to carry out the too big and pipeline of the temperature difference that the heat exchange leads to and the decompression tower work anomaly that the back oil-water mixture leads to of pipeline leakage, the stable high-efficient operation of decompression tower main part equipment has been guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall schematic view of a bottom oil cooling system according to an embodiment of the present invention.
The system comprises a 10-oil supply pump, a 11-expansion tank, a 12-circulation loop, a 13-oil-gas separator, a 14-circulation pump, a 15-bottom oil cooler, a 151-bottom oil cooling bypass, a 152-bottom oil bypass adjusting valve, a 16-heat conduction oil cooler, a 161-heat conduction oil cooling bypass, a 162-heat conduction oil bypass adjusting valve, a 17 oil storage tank, a 171-emergency oil discharge pipeline, a 172-emergency oil discharge valve and an 18-sewage discharge pipe.
Detailed Description
The core of the utility model is to provide a bottom oil cooling system, this bottom oil cooling system can effectively avoid cooling system pipeline part to lead to the pipeline to leak because of the too big production of the difference in temperature warp, guarantees the bottom oil cooling system steady operation of decompression tower.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a general schematic diagram of a bottom oil cooling system according to an embodiment of the present invention.
In a specific embodiment, the utility model provides a bottom oil cooling system, including the oil feed pump 10 with upstream conduction oil supply equipment intercommunication, the low reaches intercommunication of oil feed pump 10 has expansion tank 11, the low reaches intercommunication of expansion tank 11 has circulation circuit 12, circulation circuit 12 includes oil and gas separator 13, circulating pump 14, bottom oil cooler 15 and the conduction oil cooler 16 that communicate in order, oil and gas separator 13 communicates with expansion tank 11 and conduction oil cooler 16 respectively, the low reaches of expansion tank 11 still communicates the oil storage tank 17 that is parallelly connected with circulation circuit 12, still include simultaneously with oil storage tank 17 and the blow off pipe 18 of circulation circuit 12 intercommunication; a tube side of the bottom oil cooler 15 is communicated with the circulation loop 12, a shell side of the bottom oil cooler is communicated with a pressure reduction tower bottom oil pipeline, a bottom oil temperature sensor is arranged at the communication position of an oil outlet of the shell side of the bottom oil cooler 15 and the pressure reduction tower bottom oil pipeline, a bottom oil cooling bypass 151 connected with the bottom oil cooler 15 in parallel is communicated between the circulating pump 14 and the heat conduction oil cooler 16, and a bottom oil bypass regulating valve 152 matched with the bottom oil temperature sensor is arranged at the communication position of the tail end of the bottom oil cooling bypass 151 and the circulation loop 12; the tube side of the heat conducting oil cooler 16 is communicated with the circulation loop 12, the shell side of the heat conducting oil cooler is communicated with an external cooling water pipeline, a heat conducting oil temperature sensor is arranged at the communication position of the heat conducting oil cooler 16 and the circulation loop 12, a heat conducting oil cooling bypass 161 which is connected with the heat conducting oil cooler 16 in parallel is communicated between the bottom oil cooler 15 and the oil-gas separator 13, and a heat conducting oil bypass adjusting valve 162 which is matched with the heat conducting oil temperature sensor is arranged at the communication position of the tail end of the heat conducting oil cooling bypass 161 and the circulation loop 12.
In the operation process, heat conduction oil is pumped into a downstream pipeline through an oil supply pump 10, and is introduced into a circulation loop 12 through an expansion tank 11, and then is pressurized and pumped into a tube side of a bottom oil cooler 15 through a circulating pump 14 again so as to exchange heat with bottom oil in a shell side of the bottom oil cooler 15, so that the bottom oil is rapidly cooled, the bottom oil which completes heat exchange and is cooled to a reasonable temperature is sent back into a decompression tower again for cycle use of a subsequent process, and in the process, a bottom oil temperature sensor monitors the temperature of the bottom oil at an oil outlet of the bottom oil cooler 15 in real time and sends back into the decompression tower, so that a worker can conveniently change the temperature according to the temperature of the bottom oil. The pipeline aperture of in time adjusting bottom oil bypass governing valve 152, the realization is to the flow control of the tube side of bottom oil cooling bypass 151 and bottom oil cooler 15, and with this realization is to the accurate control of fluid heat exchange degree in bottom oil cooler 15, thereby bottom oil temperature control in the decompression tower is sent back to bottom oil cooler 15's oil-out department in reasonable scope, avoid leading to equipment pipeline relevant part to warp or damage because of the bottom oil high temperature, cause to take place fluid to leak, and carry out direct heat exchange through conduction oil and bottom oil and effectively avoided because of adopting the cooling water to carry out the too big and pipeline of the temperature difference that the heat exchange leads to with the bottom oil and leak the decompression tower that the back oil-water mixture leads to unusual, the stable high-efficient operation of decompression tower main part equipment has been guaranteed.
The heat-conducting oil after heat exchange with the bottom oil in the bottom oil cooler 15 is continuously conveyed to the tube side of the heat-conducting oil cooler 16 along the circulating loop 12 and exchanges heat with cooling water in the shell side of the heat-conducting oil cooler 16, so that the heat-conducting oil is efficiently and quickly cooled to avoid adverse effects on related parts of the circulating loop 12 due to overhigh temperature of the heat-conducting oil, in the process, the heat-conducting oil temperature sensor monitors the temperature of the heat-conducting oil at the communication part between the tube side outlet end of the heat-conducting oil cooler 16 and the circulating loop 12 in real time, so that a worker can timely adjust the pipeline opening of the heat-conducting oil bypass adjusting valve 162 according to the temperature change of the heat-conducting oil to realize flow control of the tube sides of the heat-conducting oil cooling bypass 161 and the heat-conducting oil cooler 16, and accordingly realize accurate control of the heat exchange degree of the heat-conducting oil and the cooling water in the heat-conducting oil cooler 16, and further control of the temperature of the In enclosing, avoid leading to circulation loop 12 and whole bottom oil cooling system's relevant part to produce because of the heat conduction oil high temperature and warp or damage, cause to take place fluid and leak, guarantee bottom oil cooling system's whole high-efficient steady operation.
Furthermore, an emergency oil discharge pipeline 171 which can discharge the heat conduction oil from the circulation loop 12 into the oil storage tank 17 is communicated between the circulation loop 12 and the oil storage tank 17, the communication position of the emergency oil discharge pipeline 171 and the circulation loop 12 is positioned between the circulation pump 14 and the bottom oil cooler 15, an emergency oil discharge valve 172 is arranged on the emergency oil discharge pipeline 171, and an oil return valve is arranged at the communication position of the oil outlet of the shell pass of the bottom oil cooler 15 and the bottom oil pipeline of the pressure reduction tower. In a normal operation state of the general equipment, the emergency drain valve 172 is closed, and the return valve is opened. When emergency situations such as stopping the circulating pump 14 or power failure of equipment occur, in order to prevent related equipment from being damaged due to overheating of heat conduction oil in the system, the oil return valve is immediately closed, the emergency oil discharge valve 172 is opened, and the emergency oil discharge pipeline 171 is conducted, so that residual heat conduction oil in each heat exchanger and pipeline can be timely discharged into the oil storage tank 17, and the heat conduction oil with high temperature after heat exchange is prevented from remaining in the system to cause adverse effects on the related pipeline equipment; after the system resumes operation, the emergency oil drain valve 172 can be closed and the oil return valve can be re-opened, and at the same time, cold oil in the expansion tank 11 or in the upstream pipeline and equipment thereof is continuously introduced into the circulation loop 12 through equipment such as a high-level pressure head, so that heat conduction oil compensation is completed, and stable operation of each cooler and related pipeline equipment is ensured.
More specifically, the bottom oil bypass regulating valve 152 and the conduction oil bypass regulating valve 162 are electrically controlled three-way valves. This kind of automatically controlled three-way valve can compromise multicell way open-close and aperture control in coordination of open-close and the aperture control of communicating structure, and its control accuracy is higher, can fully satisfy bottom oil cooling system's operating mode needs to effectively guarantee the aperture adjustment efficiency and the adjustment effect of relevant pipeline.
In conclusion, the utility model provides a bottom oil cooling system, in its operation, in with conduction oil pump sending to low reaches pipeline through the fuel feed pump, and let in the circulation circuit via the expansion tank, later in via the circulating pump pressurization pump sending to bottom oil cooler's tube side once more, so that carry out the heat exchange with the bottom oil in bottom oil cooler's the shell side, make the bottom oil cool down rapidly, accomplish the heat exchange and cool down to the bottom oil of reasonable temperature again by the pressure-reducing tower in for follow-up technology circulation, in this process, bottom oil temperature ware real-time supervision bottom oil cooler's oil-out department sends back the bottom oil temperature in the pressure-reducing tower, so that the staff is according to the temperature variation of bottom oil. The pipeline opening of the bottom oil bypass regulating valve is timely regulated, flow control of a bottom oil cooling bypass and a tube pass of a bottom oil cooler is realized, and accurate control of the oil heat exchange degree in the bottom oil cooler is realized, so that the temperature of bottom oil fed back to an oil outlet of the bottom oil cooler in a decompression tower is controlled within a reasonable range, deformation or damage of relevant parts of an equipment pipeline caused by overhigh temperature of the bottom oil is avoided, oil leakage is avoided, direct heat exchange is carried out through heat conduction oil and the bottom oil, abnormal operation of the decompression tower caused by overlarge temperature difference and oil-water mixing after pipeline leakage caused by heat exchange of cooling water and the bottom oil is effectively avoided, and stable and efficient operation of main equipment of the decompression tower is ensured; the heat-conducting oil after heat exchange with the bottom oil in the bottom oil cooler is continuously conveyed to the tube side of the heat-conducting oil cooler along the circulating loop and exchanges heat with cooling water in the shell side of the heat-conducting oil cooler, so that the heat-conducting oil is efficiently and quickly cooled, and the adverse effect of overhigh temperature of the heat-conducting oil on relevant parts of the circulating loop is avoided, in the process, the heat-conducting oil temperature sensor monitors the temperature of the heat-conducting oil at the communication part between the tube side outlet end of the heat-conducting oil cooler and the circulating loop in real time, so that a worker can timely adjust the pipeline opening of a heat-conducting oil bypass adjusting valve according to the temperature change of the heat-conducting oil, realize the flow control of the heat-conducting oil cooling bypass and the tube side of the heat-conducting oil cooler, and accordingly realize the accurate control of the heat exchange degree between the heat-conducting oil in the heat-conducting oil cooler and the heat-conducting oil conveyed to the, avoid causing the relevant part of circulation circuit and whole bottom oil cooling system to produce deformation or damage because of heat conduction oil high temperature, cause and take place fluid leakage, guarantee bottom oil cooling system's whole high-efficient steady operation.
The above is to the present invention provides a bottom oil cooling system with detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (3)
1. A bottom oil cooling system is characterized in that: the oil-gas separator is communicated with the expansion tank and the heat-conducting oil cooler respectively, the downstream of the expansion tank is also communicated with an oil storage tank which is connected with the circulation loop in parallel, and the oil-gas separator also comprises a drain pipe which is communicated with the oil storage tank and the circulation loop simultaneously;
the tube side of the bottom oil cooler is communicated with the circulation loop, the shell side of the bottom oil cooler is communicated with a pressure reduction tower bottom oil pipeline, a bottom oil temperature sensor is arranged at the communication position of an oil outlet of the shell side of the bottom oil cooler and the pressure reduction tower bottom oil pipeline, a bottom oil cooling bypass which is connected with the bottom oil cooler in parallel is communicated between the circulating pump and the heat transfer oil cooler, and a bottom oil bypass regulating valve matched with the bottom oil temperature sensor is arranged at the communication position of the tail end of the bottom oil cooling bypass and the circulation loop;
the pipe side of the heat conduction oil cooler is communicated with the circulation loop, the shell side of the heat conduction oil cooler is communicated with an external cooling water pipeline, a heat conduction oil temperature sensor is arranged at the communication position of the heat conduction oil cooler and the circulation loop, a heat conduction oil cooling bypass connected with the heat conduction oil cooler in parallel is communicated between the bottom oil cooler and the oil-gas separator, and a heat conduction oil bypass adjusting valve matched with the heat conduction oil temperature sensor is arranged at the communication position of the tail end of the heat conduction oil cooling bypass and the circulation loop.
2. The base oil cooling system of claim 1, wherein: an emergency oil discharge pipeline which can discharge heat conduction oil from the circulation loop into the oil storage tank is communicated between the circulation loop and the oil storage tank, the communication position of the emergency oil discharge pipeline and the circulation loop is positioned between the circulation pump and the bottom oil cooler, an emergency oil discharge valve is arranged on the emergency oil discharge pipeline, and an oil outlet of a shell pass of the bottom oil cooler is communicated with a bottom oil pipeline of a pressure reduction tower to form an oil return valve.
3. The base oil cooling system of claim 1, wherein: the bottom oil bypass regulating valve and the heat conducting oil bypass regulating valve are electric control three-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020337524.0U CN211847827U (en) | 2020-03-17 | 2020-03-17 | Bottom oil cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020337524.0U CN211847827U (en) | 2020-03-17 | 2020-03-17 | Bottom oil cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN211847827U true CN211847827U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020337524.0U Active CN211847827U (en) | 2020-03-17 | 2020-03-17 | Bottom oil cooling system |
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| CN (1) | CN211847827U (en) |
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- 2020-03-17 CN CN202020337524.0U patent/CN211847827U/en active Active
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