CN209746438U - Chemical reaction temperature automatic control system of ultra-low temperature - Google Patents
Chemical reaction temperature automatic control system of ultra-low temperature Download PDFInfo
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- CN209746438U CN209746438U CN201920749579.XU CN201920749579U CN209746438U CN 209746438 U CN209746438 U CN 209746438U CN 201920749579 U CN201920749579 U CN 201920749579U CN 209746438 U CN209746438 U CN 209746438U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 51
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 183
- 239000007788 liquid Substances 0.000 claims abstract description 92
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 91
- 239000003507 refrigerant Substances 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 butyl lithium free radical Chemical class 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000006713 insertion reaction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses an ultra-low temperature chemical reaction temperature automatic control system, and the system device comprises a heat-conducting oil inlet hand valve, a system inlet pipeline, a system outlet pipeline, a steam heating pipeline, a primary refrigerant cooling pipeline, a liquid nitrogen cooling pipeline, a steam heat exchanger, a steam inlet Y-shaped filter, a primary refrigerant inlet manual ball valve and a liquid nitrogen inlet hand valve, one side of the heat-conducting oil inlet hand valve is connected with the heat-conducting oil inlet Y-shaped filter through a pipeline, one end of the heat-conducting oil inlet Y-shaped filter is connected with a pump inlet hand valve through a pipeline, and the bottom of the pump inlet hand valve is connected with a circulating pump through a pipeline; the utility model discloses can ensure that the low temperature reaction system of big small system can be at the accurate accuse temperature under the ultra-low temperature dress state in the synthetic trade of chemical medicine, go up and down the temperature steady, the temperature fluctuation is little, convenient operation, and reduce cost reduces numerous and diverse manual labor, and the quality yield of guarantee reaction product reduces ambient pressure, improves economic benefits.
Description
Technical Field
The utility model belongs to the technical field of fine chemistry industry and pharmacy, concretely relates to chemical reaction temperature automatic control system of ultra-low temperature.
Background
In the fields of fine chemical industry and pharmacy, a plurality of low-temperature reactions (such as carbonyl insertion reaction, butyl lithium free radical reaction and the like) are carried out in an ultralow temperature reaction kettle and need to be carried out under a certain ultralow temperature condition, the low temperature is one of the most main conditions for carrying out the ultralow temperature reaction and needing to be controlled, and the accuracy of temperature control, temperature fluctuation, temperature rising and falling rate and the like play a crucial role in the chemical reaction. At present, most of industrial temperature control modes of ultralow temperature reaction generally adopt a manual control valve to directly inject liquid nitrogen into a reaction system or directly introduce the liquid nitrogen into a jacket of a reaction kettle to cool the reaction system, so as to reach the working condition of ultralow temperature, when the system is heated up after the reaction is finished, the system generally directly waits for natural heating to reach a certain temperature, long time is needed, then a steam valve of the manual operation jacket directly enters the jacket of the reaction kettle to be heated, a chilled water valve of the manual operation jacket directly enters the jacket of the reaction kettle to cool, the mode is difficult to achieve the accuracy of temperature control, great potential safety hazards are brought to the chemical reaction process, operators need manual operation, the labor intensity is high, misoperation is easy to generate, the loss and the loss of the liquid nitrogen are caused, and the automation degree of the production process is low. Along with the requirements of the current chemical industry development situation, the situations of safety and environmental protection are more severe, and the requirements of process automation control are strict. Therefore, it is an urgent need to develop an intelligent temperature control system which can rapidly and stably increase and decrease the temperature, has small temperature fluctuation, can accurately control the temperature in the state of ultralow temperature of-120 ℃ to 100 ℃ and is convenient to operate.
At present, most of the temperature control modes of ultra-low temperature reaction in industry generally adopt a method that liquid nitrogen is directly injected into a reaction system through a manual control valve or the liquid nitrogen is directly introduced into a jacket of a reaction kettle to cool the reaction system, so as to achieve the working condition of ultralow temperature, when the temperature of the reaction system is raised, the reaction system generally directly waits for the natural temperature rise to a certain temperature, and takes a long time, then the steam valve of the jacket is manually operated to directly enter the jacket of the reaction kettle for heating, the chilled water valve of the jacket is manually operated to directly enter the jacket of the reaction kettle for cooling, the method is difficult to achieve the accuracy of temperature control, brings great potential safety hazard to the chemical reaction process, and the operators need manual operation, the labor intensity is high, the operation errors are easy to generate, the loss and the loss of the liquid nitrogen are caused, the chemical reaction quality and the yield are not stable, and the automation degree of the production process is low.
The other solution is to cool the coal price to the ultra-low temperature through the cascade compression refrigeration and then cool the jacket of the reaction kettle for transferring the material in the kettle for cooling, one of the solutions is to only provide refrigeration for the reaction container with small volume, the deep refrigeration of the large system uses the very poor refrigeration effect of the compressor, and the cost is very high, and the refrigeration process is unstable, and the low temperature is difficult to ensure the normal proceeding of the reaction, often brings the risk of reaction failure, is difficult to reach the accuracy of temperature control, brings very big potential safety hazard to the chemical reaction process, and the labor intensity of the operating personnel is large, the automation degree of the production process is low, so we propose an ultra-low temperature chemical reaction temperature automatic control system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a chemical reaction temperature automatic control system of ultra-low temperature to the potential safety hazard of proposing in solving above-mentioned background art is big, and intensity of labour is big and the problem that production process automation degree is low.
In order to achieve the above object, the utility model provides a following technical scheme: an ultralow-temperature automatic chemical reaction temperature control system comprises a heat-conducting oil inlet hand valve, a system inlet pipeline, a system outlet pipeline, a steam heating pipeline, a primary refrigerant cooling pipeline, a liquid nitrogen cooling pipeline, a steam heat exchanger, a steam inlet Y-shaped filter, a primary refrigerant inlet manual ball valve, a liquid nitrogen inlet hand valve and a liquid nitrogen cooler, wherein one side of the heat-conducting oil inlet hand valve is connected with the heat-conducting oil inlet Y-shaped filter through a pipeline, one end of the heat-conducting oil inlet Y-shaped filter is connected with a pump inlet hand valve through a pipeline, the bottom of the pump inlet hand valve is connected with a circulating pump through a pipeline, one end surface of the circulating pump is connected with a heater through a pipeline, an outlet pipeline of the heater is connected to a second pneumatic three-way valve, one side of the second pneumatic three-way valve is connected into the system outlet pipeline through a pipeline, one end of the liquid nitrogen primary cooler is connected with a liquid nitrogen control valve, the bottom end of the liquid nitrogen primary cooler is connected to the liquid nitrogen cooler through a pipeline, a first pneumatic three-way valve and a steam inlet hand valve are installed at the outlet position of the liquid nitrogen cooler, the liquid nitrogen cooler is connected to a system outlet pipeline through the first pneumatic three-way valve, the steam inlet hand valve and the pipeline, the upper surface of the circulating pump is connected with a primary refrigerant cooler through the pipeline, the outlet position of the primary refrigerant cooler is connected to the first pneumatic three-way valve and the steam inlet hand valve through the pipeline, and the steam inlet hand valve is connected to the system outlet pipeline through the pipeline.
Preferably, the steam heating pipeline is connected with a steam inlet hand valve, the top of the steam inlet hand valve is connected with a steam inlet Y-shaped filter, the steam inlet Y-shaped filter is in butt joint with a pneumatic switch valve through a pipeline and is connected into a heater through a pipeline, and a condensate outlet of the heater is connected with a condenser hand valve, a condenser drain valve and a condenser outlet hand valve through pipelines.
Preferably, the primary refrigerant cooling pipeline is connected with a primary refrigerant inlet manual ball valve, one side of the primary refrigerant inlet manual ball valve is connected with a primary refrigerant inlet Y-shaped filter, one side of the primary refrigerant inlet Y-shaped filter is connected with a primary refrigerant inlet pneumatic switch valve and a primary refrigerant cooler through pipelines, and the outlet position of the primary refrigerant cooler is connected with a primary refrigerant outlet manual ball valve through a pipeline.
Preferably, the liquid nitrogen cooling pipeline is connected with a liquid nitrogen inlet hand valve, one side of the liquid nitrogen inlet hand valve is connected with a liquid nitrogen control valve, one side of the liquid nitrogen control valve is connected into the liquid nitrogen cooler through a pipeline, the outlet position of the liquid nitrogen cooler is connected to a pneumatic control valve of the liquid nitrogen primary cooler through a pipeline, the pneumatic control valve of the liquid nitrogen primary cooler is connected with a liquid nitrogen primary cooler through a pipeline, a thermometer and a safety valve are installed at the outlet pipeline position of the liquid nitrogen cooler and used for measuring the outlet temperature of the liquid nitrogen and utilizing the residual cold energy to carry out circulating cooling on the heat-conducting oil.
Preferably, the automatic control system further comprises a heat-conducting oil outlet hand valve, a heat-conducting oil outlet check valve, an expansion tank outlet hand valve, an expansion tank safety valve, an expansion tank hand valve, an expansion tank, a liquid level meter, a standby pump outlet ball valve, a standby pump inlet ball valve, a standby pump and an explosion-proof actuator, the top of the expansion tank is provided with the heat-conducting oil outlet hand valve, the heat-conducting oil outlet check valve, the expansion tank safety valve and the expansion tank hand valve, and the expansion tank outlet hand valve is located on one side of the liquid nitrogen one-level cooler.
Preferably, an inlet temperature sensor and a flowmeter are arranged on the inlet pipeline part of the circulating pump and used for measuring the temperature and the flow at the inlet of the system.
Preferably, a bypass valve is installed at the outlet of the steam heating pipeline, the steam heating pipeline is finally connected to the condensed water outlet pipeline, a pressure sensor is installed at the steam inlet and used for measuring the pressure at the steam inlet, and a temperature sensor is installed at the condensed water outlet pipeline and used for measuring the temperature at the condensed water outlet.
Preferably, the three pipelines on the outer surface of the circulating pump are finally connected to the heat-conducting oil outlet hand valve, the outlet pipeline is provided with a temperature sensor for measuring the temperature of the outlet of the system, and the pressure variation device is used for measuring the pressure of the outlet of the system.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can ensure that the low temperature reaction system of big small system can be at the accurate accuse temperature under the ultra-low temperature dress state in the synthetic trade of chemical medicine, go up and down the temperature steady, the temperature fluctuation is little, convenient operation, and reduce cost reduces numerous and diverse manual labor, and the quality yield of guarantee reaction product reduces ambient pressure, improves economic benefits.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a front view of the present invention;
Fig. 2 is a rear view of the present invention;
Fig. 3 is a side view of the present invention;
FIG. 4 is a schematic diagram of the system operation process of the present invention;
in the figure: 1. a heat conducting oil outlet hand valve; 2. a steam inlet hand valve; 3. a heat transfer oil outlet check valve; 4. A primary refrigerant outlet manual ball valve; 5. a liquid nitrogen primary cooler; 6. an expansion tank outlet hand valve; 7. an outlet hand valve; 8. a pump inlet hand valve; 9. a liquid nitrogen inlet hand valve; 10. a circulation pump; 11. a primary refrigerant inlet manual ball valve; 12. an expansion tank safety valve; 13. an expansion tank hand valve; 14. a pneumatic on-off valve; 15. An expansion tank; 16. a liquid level meter; 17. a condenser hand valve; 18. a condenser outlet hand valve; 19. an outlet ball valve of the standby pump; 20. a backup pump inlet ball valve; 21. a backup pump; 22. an explosion-proof actuator; 23. the primary refrigerant enters a pneumatic switch valve; 24. a first pneumatic three-way valve; 25. a second pneumatic three-way valve; 26. a primary refrigerant cooler; 27. a condenser drain valve; 28. a liquid nitrogen cooler; 29. a heat transfer oil inlet hand valve; 30. a pneumatic control valve of the liquid nitrogen primary cooler; 31. a heater; 32. a hydraulic nitrogen control valve; 33. A heat conducting oil inlet Y-shaped filter; 34. steam inlet Y type filter.
Detailed Description
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: an ultralow-temperature automatic chemical reaction temperature control system comprises a heat-conducting oil inlet hand valve 29, a system inlet pipeline, a system outlet pipeline, a steam heating pipeline, a primary refrigerant cooling pipeline, a liquid nitrogen cooling pipeline, a steam heat exchanger, a steam inlet Y-shaped filter 34, a primary refrigerant inlet manual ball valve 11, a liquid nitrogen inlet hand valve 9 and a liquid nitrogen cooler 28, wherein one side of the heat-conducting oil inlet hand valve 29 is connected with the heat-conducting oil inlet Y-shaped filter 33 through a pipeline, one end of the heat-conducting oil inlet Y-shaped filter 33 is connected with a pump inlet hand valve 8 through a pipeline, the bottom of the pump inlet hand valve 8 is connected with a circulating pump 10 through a pipeline, one end surface of the circulating pump 10 is connected with a heater 31 through a pipeline, an outlet pipeline of the heater 31 is connected with a second pneumatic three-way valve 25, one side of the second pneumatic three-way valve 25 is connected into the system, one end of liquid nitrogen primary cooler 5 is connected with liquid nitrogen gas control valve 32, pipe connection to liquid nitrogen cooler 28 is passed through to the bottom of liquid nitrogen primary cooler 5, first pneumatic three-way valve 24 and steam inlet hand valve 2 are installed to the exit position department of liquid nitrogen cooler 28, liquid nitrogen cooler 28 is through first pneumatic three-way valve 24 and steam inlet hand valve 2 and pipe connection to system outlet pipeline, the upper surface of circulating pump 10 has elementary refrigerant cooler 26 through pipe connection, the exit position department of elementary refrigerant cooler 26 is through pipe connection to first pneumatic three-way valve 24 and steam inlet hand valve 2, steam inlet hand valve 2 passes through pipe connection system outlet pipeline.
In this embodiment, preferably, the steam heating pipeline is connected to the steam inlet hand valve 2, the top of the steam inlet hand valve 2 is connected to the steam inlet Y-shaped filter 34, the steam inlet Y-shaped filter 34 is connected to the pneumatic switch valve 14 through a pipeline and is connected to the heater 31 through a pipeline, and the condensed water outlet of the heater 31 is connected to the condenser hand valve 17, the condenser drain valve 27 and the condenser outlet hand valve 18 through pipelines.
in this embodiment, preferably, the primary refrigerant cooling pipeline is connected to the primary refrigerant inlet manual ball valve 11, one side of the primary refrigerant inlet manual ball valve 11 is connected to the primary refrigerant inlet Y-shaped filter, one side of the primary refrigerant inlet Y-shaped filter is connected to the primary refrigerant inlet pneumatic switch valve 23 and the primary refrigerant cooler 26 through pipelines, and the outlet of the primary refrigerant cooler 26 is connected to the primary refrigerant outlet manual ball valve 4 through a pipeline.
In this embodiment, preferably, the liquid nitrogen cooling pipeline is connected to the liquid nitrogen inlet hand valve 9, one side of the liquid nitrogen inlet hand valve 9 is connected to the liquid nitrogen control valve 32, one side of the liquid nitrogen control valve 32 is connected to the liquid nitrogen cooler 28 through a pipeline, the outlet position of the liquid nitrogen cooler 28 is connected to the liquid nitrogen primary cooler pneumatic control valve 30 through a pipeline, the liquid nitrogen primary cooler pneumatic control valve 30 is connected to the liquid nitrogen primary cooler 5 through a pipeline, a thermometer and a safety valve are installed at the outlet pipeline position of the liquid nitrogen cooler 28, the thermometer and the safety valve are used for measuring the outlet temperature of the liquid nitrogen, and residual cold energy is used for circularly cooling the heat conducting.
In this embodiment, preferably, the automatic control system further includes a heat conduction oil outlet hand valve 1, a heat conduction oil outlet check valve 3, an expansion tank outlet hand valve 6, a pump outlet hand valve 7, an expansion tank safety valve 12, an expansion tank hand valve 13, an expansion tank 15, a level gauge 16, a standby pump outlet ball valve 19, a standby pump inlet ball valve 20, a standby pump 21 and an explosion-proof actuator 22, the top of the expansion tank 15 is provided with the heat conduction oil outlet hand valve 1, the heat conduction oil outlet check valve 3, the expansion tank safety valve 12 and the expansion tank hand valve 13, and the expansion tank outlet hand valve 6 is located on one side of the liquid nitrogen primary cooler 5.
In this embodiment, it is preferable that an inlet temperature sensor and a flow meter are installed at the inlet pipe portion of the circulation pump 10 to measure the temperature and the flow rate at the inlet of the system.
In this embodiment, preferably, a bypass valve is installed at the outlet of the steam heating pipeline, and is finally connected to the condensed water outlet pipeline, and a pressure sensor is installed at the steam inlet for measuring the pressure at the steam inlet, and a temperature sensor is installed at the condensed water outlet pipeline for measuring the temperature at the condensed water outlet.
In this embodiment, preferably, the three pipelines on the outer surface of the circulation pump 10 are finally connected to the heat transfer oil outlet hand valve 1, the outlet pipeline is provided with a temperature sensor for measuring the temperature of the outlet of the system, the pressure regulator is used for measuring the pressure of the outlet of the system, the whole system is built into a frame structure by using square steel, and the whole case is formed by bending and assembling stainless steel plates.
the utility model discloses a theory of operation and use flow: the system uses heat conduction oil as a heat-carrying medium, the heat conduction oil enters a system inlet heat conduction oil inlet Y-shaped filter 33 from a system inlet through a system inlet hand valve, and enters a circulating pump 10 through a pump inlet hand valve 8 after coming out of an outlet of the heat conduction oil inlet Y-shaped filter 33; when the temperature of the heat-conducting oil is lower than the set temperature, the system automatically calculates and commands the control regulating valve to open, the steam automatic control valve opens to heat-conducting oil, and finally the steam automatic control valve transmits the heat-conducting oil into a reaction kettle jacket to heat the reaction kettle; when the temperature of the heat-conducting oil is higher than the set temperature and the system needs to be cooled, the heating system is closed, the system automatically calculates and commands the control valve to open, the heat-conducting oil enters the primary refrigerant cooler 26, the primary refrigerant automatically controls the valve to open, the heat-conducting oil is cooled, and finally the heat-conducting oil is transmitted into the jacket of the reaction kettle to cool the reaction kettle; when the temperature of the heat transfer oil needs to be cooled at an ultralow temperature, the primary refrigerant cooling system is closed, the system automatically calculates and commands the nitrogen control valve to be opened, the heat transfer oil starts to be cooled circularly through the liquid nitrogen cooler 28, and finally the heat transfer oil is transmitted into the jacket of the reaction kettle to cool the reaction kettle at the ultralow temperature; when the heat conduction oil does not need to be heated or cooled, the system automatically calculates and controls the automatic control valve of the outlet pipeline to be opened, and the heat conduction oil directly enters the outlet pipeline of the system through the hand valve of the outlet pipeline; the low-pressure steam enters the inner side of the steam heat exchanger after passing through the steam inlet switch valve, the steam heat exchanger can heat the heat conduction oil entering the heat exchanger, the steam is changed into condensed water in the steam heat exchanger, the condensed water is discharged into a condensed water main pipe through a condensed water outlet stop valve and a condensed water outlet drain valve, a primary refrigerant enters the inner side of a primary refrigerant cooler 26 through a primary refrigerant inlet manual ball valve 11, and the primary refrigerant cooler 26 can cool the heat conduction oil entering the cooler and discharge the heat conduction oil to a primary refrigerant outlet; liquid nitrogen enters the inner side of the liquid nitrogen cooler 28 through the liquid nitrogen inlet hand valve 9 and the liquid nitrogen control valve 32, the liquid nitrogen cooler 28 cools heat conduction oil entering the cooler and discharges the heat conduction oil into the liquid nitrogen primary cooler 5, meanwhile, the liquid nitrogen enters the tube pass of the liquid nitrogen primary cooler 5 through the control valve after passing through the liquid nitrogen cooler 28, the heat conduction oil entering the cooling box is cooled circularly by utilizing residual cold energy, and the liquid nitrogen is discharged to the nitrogen outlet.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a chemical reaction temperature automatic control system of ultra-low temperature which characterized in that: the device comprises a heat-conducting oil inlet hand valve (29), a system inlet pipeline, a system outlet pipeline, a steam heating pipeline, a primary refrigerant cooling pipeline, a liquid nitrogen cooling pipeline, a steam heat exchanger, a steam inlet Y-shaped filter (34), a primary refrigerant inlet manual ball valve (11), a liquid nitrogen inlet hand valve (9) and a liquid nitrogen cooler (28), wherein one side of the heat-conducting oil inlet hand valve (29) is connected with the heat-conducting oil inlet Y-shaped filter (33) through a pipeline, one end of the heat-conducting oil inlet Y-shaped filter (33) is connected with a pump inlet hand valve (8) through a pipeline, the bottom of the pump inlet hand valve (8) is connected with a circulating pump (10) through a pipeline, the surface of one end of the circulating pump (10) is connected with a heater (31) through a pipeline, an outlet pipeline of the heater (31) is connected to a second pneumatic three-way valve (25), one, one side surface of the circulating pump (10) is connected with a liquid nitrogen primary cooler (5) through a pipeline, one end of the liquid nitrogen primary cooler (5) is connected with a liquid nitrogen control valve (32), the bottom end of the liquid nitrogen primary cooler (5) is connected to a liquid nitrogen cooler (28) through a pipeline, a first pneumatic three-way valve (24) and a steam inlet hand valve (2) are arranged at the outlet position of the liquid nitrogen cooler (28), the liquid nitrogen cooler (28) is connected to a system outlet pipeline through a first pneumatic three-way valve (24), a steam inlet hand valve (2) and a pipeline, the upper surface of the circulating pump (10) is connected with a primary refrigerant cooler (26) through a pipeline, the outlet position of the primary refrigerant cooler (26) is connected to a first pneumatic three-way valve (24) and a steam inlet hand valve (2) through pipelines, and the steam inlet hand valve (2) is connected to an outlet pipeline of the system through a pipeline.
2. The ultra-low temperature chemical reaction temperature automatic control system according to claim 1, characterized in that: steam heating pipe connection steam inlet hand valve (2), the top and the steam inlet Y type filter (34) of steam inlet hand valve (2) are connected, steam inlet Y type filter (34) dock through pipeline and pneumatic switch valve (14) to insert heater (31) through the pipeline, there are condenser hand valve (17) and condenser trap (27) and condenser export hand valve (18) in the comdenstion water exit of heater (31) through the pipe connection.
3. The ultra-low temperature chemical reaction temperature automatic control system according to claim 1, characterized in that: the primary refrigerant cooling pipeline is connected with a primary refrigerant inlet manual ball valve (11), one side of the primary refrigerant inlet manual ball valve (11) is connected with a primary refrigerant inlet Y-shaped filter, one side of the primary refrigerant inlet Y-shaped filter is connected with a primary refrigerant inlet pneumatic switch valve (23) and a primary refrigerant cooler (26) through pipelines, and the outlet position of the primary refrigerant cooler (26) is connected with a primary refrigerant outlet manual ball valve (4) through a pipeline.
4. The ultra-low temperature chemical reaction temperature automatic control system according to claim 3, characterized in that: the liquid nitrogen cooling pipeline is connected with a liquid nitrogen inlet hand valve (9), one side of the liquid nitrogen inlet hand valve (9) is connected with a liquid nitrogen control valve (32), one side of the liquid nitrogen control valve (32) is connected into a liquid nitrogen cooler (28) through a pipeline, the outlet position of the liquid nitrogen cooler (28) is connected to a liquid nitrogen primary cooler pneumatic control valve (30) through a pipeline, the liquid nitrogen primary cooler pneumatic control valve (30) is connected with a liquid nitrogen primary cooler (5) through a pipeline, and a thermometer and a safety valve are installed on the outlet pipeline position of the liquid nitrogen cooler (28).
5. The ultra-low temperature chemical reaction temperature automatic control system according to claim 1, characterized in that: the automatic control system further comprises a heat conduction oil outlet hand valve (1), a heat conduction oil outlet check valve (3), an expansion tank outlet hand valve (6), a pump outlet hand valve (7), an expansion tank safety valve (12), an expansion tank hand valve (13), an expansion tank (15), a liquid level meter (16), a standby pump outlet ball valve (19), a standby pump inlet ball valve (20), a standby pump (21) and an explosion-proof actuator (22), the top of the expansion tank (15) is provided with the heat conduction oil outlet hand valve (1), the heat conduction oil outlet check valve (3), the expansion tank safety valve (12) and the expansion tank hand valve (13), and the expansion tank outlet hand valve (6) is located on one side of the liquid nitrogen primary cooler (5).
6. The ultra-low temperature chemical reaction temperature automatic control system according to claim 1, characterized in that: an inlet temperature sensor and a flowmeter are arranged on the inlet pipeline part of the circulating pump (10).
7. The ultra-low temperature chemical reaction temperature automatic control system according to claim 2, characterized in that: the steam heating pipeline is characterized in that a bypass valve is installed at the position of an outlet of the steam heating pipeline and is finally connected into a condensate outlet pipeline, a pressure sensor is installed at a steam inlet, and a temperature sensor is installed at the condensate outlet pipeline.
8. The ultra-low temperature chemical reaction temperature automatic control system according to claim 1, characterized in that: and three pipelines on the outer surface of the circulating pump (10) are finally connected to the heat-conducting oil outlet hand valve (1), and a temperature sensor is arranged on the outlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749579.XU CN209746438U (en) | 2019-05-23 | 2019-05-23 | Chemical reaction temperature automatic control system of ultra-low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749579.XU CN209746438U (en) | 2019-05-23 | 2019-05-23 | Chemical reaction temperature automatic control system of ultra-low temperature |
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| Publication Number | Publication Date |
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| CN209746438U true CN209746438U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920749579.XU Withdrawn - After Issue CN209746438U (en) | 2019-05-23 | 2019-05-23 | Chemical reaction temperature automatic control system of ultra-low temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134162A (en) * | 2019-05-23 | 2019-08-16 | 上海友尹化工装备有限公司 | A kind of chemical reaction temperature automatic control system of ultralow temperature |
-
2019
- 2019-05-23 CN CN201920749579.XU patent/CN209746438U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134162A (en) * | 2019-05-23 | 2019-08-16 | 上海友尹化工装备有限公司 | A kind of chemical reaction temperature automatic control system of ultralow temperature |
| CN110134162B (en) * | 2019-05-23 | 2024-01-16 | 上海友尹化工装备有限公司 | Ultralow-temperature automatic control system for chemical reaction temperature |
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