CN211552130U - Energy-saving reation kettle and refrigeration heating temperature control system for test equipment - Google Patents
Energy-saving reation kettle and refrigeration heating temperature control system for test equipment Download PDFInfo
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- CN211552130U CN211552130U CN202020113312.4U CN202020113312U CN211552130U CN 211552130 U CN211552130 U CN 211552130U CN 202020113312 U CN202020113312 U CN 202020113312U CN 211552130 U CN211552130 U CN 211552130U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an energy-saving reation kettle and test equipment are with refrigeration heating temperature control system, its characteristic includes circulating system and refrigerating system. The utility model has the advantages that: the structure is compact and reasonable, the operation and the use are convenient, and the linear cooling of the refrigerator to the low-temperature section can be realized under the high-temperature working condition; when the refrigeration is directly carried out from the highest temperature of 250 ℃, the high-temperature refrigerant steam is quickly reduced to the normal temperature, so that the thermal overload protection of the compressor can not occur; the rapid cooling can be realized; the energy-saving refrigeration system has the characteristic of energy conservation, in the refrigeration process, if the external load is smaller, hot gas is directly bypassed into the evaporator through the quick-opening valve without passing through the condenser and the throttle valve, so that the liquid supply amount of the evaporator is reduced, and the evaporation temperature of the evaporator is increased, so that good temperature control can be realized under the condition that electric heating is not needed to participate in output; the multi-point operation and model-free self-tree building algorithm can be adopted, and the temperature of the lag target value can be controlled within +/-0.5 ℃ in a constant temperature manner aiming at the temperature control of a large lag system.
Description
Technical Field
The utility model relates to an energy-saving reation kettle and test equipment are with refrigeration heating temperature control system.
Background
The chemical synthesis reaction is often accompanied by heat absorption and heat release reaction, and because of reasons such as large heat release amount, large heat absorption amount, large feedback lag of a reaction kettle and the like, poor temperature control precision or out of control is often caused, the quality of a final product is influenced, or production accidents are caused.
The temperature control device in the prior art usually adopts a refrigeration compressor technology, can not be directly cooled from high temperature, and is protected or damaged when being cooled under the working condition of being higher than 55 ℃.
In addition, the system is cooled to normal temperature from high temperature of 250 ℃ through cooling water or cold air, and then the refrigerator is started to cool to a low temperature section, although the mode is energy-saving in the high temperature section, an electromagnetic valve, an electrically operated valve or an air operated valve are required to be installed in the system for switching, and the system can not reduce due temperature or need to increase the power of the refrigerator due to extra cold energy emitted by the air cooling heat exchanger or the water cooling heat exchanger in the low temperature section (the efficiency of the refrigerator in the low temperature section is lower, and energy is not saved). Because the circulating system is provided with the valve member, the service life of the valve member is shortened when the valve member is frequently used in a high-temperature and low-temperature environment, and the risk of the system is increased.
For the temperature control precision, in the temperature reduction process, when the temperature is close to the set value, the redundant cold energy of the refrigeration compressor is usually resisted by the heater to meet the requirement of temperature control, so that the power consumption of the whole equipment is overlarge, and the energy efficiency ratio is low.
The temperature control mode in the prior art generally adopts the outlet temperature of a control system, and because of large heat transfer lag heat exchange devices such as a reaction kettle and the like, the lag between the outlet temperature of the control system and the temperature to be controlled by an actual target is too large, so that poor temperature control precision and overlarge up-down fluctuation often occur, and the product quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-saving reation kettle and test equipment are with refrigeration heating temperature control system, its purpose aims at overcoming the above-mentioned not enough that prior art exists, realizes compact structure, energy-conservation, high efficiency, safe and reliable.
The technical solution of the utility model is as follows: the energy-saving reaction kettle and the refrigeration heating temperature control system for the test equipment are characterized by comprising a circulation system and a refrigeration system,
the circulating system comprises an expansion tank, a gas-liquid separator, an evaporator, a heating pipe and a micro radiator, wherein the top of the expansion tank is connected with the top of the gas-liquid separator through a pipeline with an exhaust stop valve, the bottom of the expansion tank is connected with the side of the gas-liquid separator through a pipeline with a one-way valve, the side of the gas-liquid separator is connected with a heat-conducting medium inlet pipe, the bottom of the gas-liquid separator is sequentially connected with a circulating pump, a first passage of the evaporator and a heat-conducting medium outlet pipe of the heating pipe through pipelines, the pipelines in the circulating system are respectively provided with a temperature sensor, the micro radiator is respectively connected with the bottom of the expansion tank and the pipeline between the one-way valve and the;
the refrigerating system comprises a compressor and a heat regenerator, the oil separator, bushing condenser and liquid storage pot, the compressor passes through pipe connection oil separator top and bottom respectively, oil separator top still passes through pipe connection bushing condenser bottom, bushing condenser bottom passes through pipe connection liquid storage pot top, bushing condenser bottom is connected the cooling water exit tube and is taken the cooling water inlet pipe of condensing pressure governing valve, the liquid storage pot top passes through pipe connection drier-filter, drier-filter passes through the first passageway of pipe connection regenerator that has throttling arrangement, the first passageway of regenerator passes through pipe connection evaporimeter second passageway, evaporimeter second passageway passes through pipe connection regenerator second passageway, the second passageway of regenerator passes through pipe connection compressor, establish the steam bypass pipe between the pipeline between oil separator and the bushing condenser and the pipeline between the first passageway of regenerator and the pipe connection evaporimeter second passageway.
Preferably, the expansion tank is provided with a liquid level meter, and the top of the expansion tank is provided with a liquid filling port.
Preferably, the throttling device comprises an expansion valve arranged on a pipeline between the drying filter and the heat regenerator, and an auxiliary liquid supply electromagnetic valve and a copper ball valve arranged on a bypass pipeline of the pipeline between the drying filter and the heat regenerator.
Preferably, the hot gas bypass pipe is provided with a quick-opening valve, an air conditioner valve and a silencer.
Preferably, an oil charge low-pressure meter is arranged on a pipeline between the second passage of the heat regenerator and the compressor, an oil charge high-pressure meter is arranged on a pipeline between the compressor and the top of the oil separator, and the pipeline between the second passage of the heat regenerator and the compressor and the pipeline between the compressor and the top of the oil separator are connected with the high-low pressure controller.
Preferably, the heating pipe is a U-shaped light pipe, and the heating pipe is connected with the three-phase voltage regulator and the mechanical temperature protection switch.
Preferably, a pipeline with a liquid spraying electromagnetic valve and an auxiliary air conditioning valve is connected between the pipeline between the dry filter and the expansion valve and the pipeline between the second passage of the evaporator and the second passage of the heat regenerator.
The utility model has the advantages that: 1) the structure is compact and reasonable, the operation and the use are convenient, and the linear cooling of the refrigerator to a low-temperature section can be realized under the working condition of high temperature (-45-250 ℃);
2) the ultra-high temperature direct refrigeration cooling technology is adopted, when the refrigeration cooling is directly carried out from the highest temperature of 250 ℃, the liquid injection electromagnetic valve is electrified and opened, the liquid refrigerant is throttled by the air conditioner and then sprayed to the outlet of the evaporator, the liquid refrigerant absorbs heat and is changed into a gas state after being mixed with the high-temperature refrigerant steam coming out of the evaporator, the high-temperature refrigerant steam is rapidly cooled to the normal temperature, and the compressor is ensured not to have thermal overload protection;
3) the liquid spraying electromagnetic valve is closed when the medium temperature is reduced to 100 ℃, the auxiliary cooling electromagnetic valve is opened at the same time, and the liquid refrigerant comes out of the auxiliary cooling electromagnetic valve, is throttled by the copper ball valve, is mixed with the low-temperature and low-pressure liquid refrigerant at the outlet of the expansion valve, and then enters the heat regenerator and the evaporator together to evaporate and absorb heat;
4) the energy-saving refrigeration system has the characteristic of energy conservation, in the refrigeration process, if the external load is smaller, hot gas is directly bypassed into the evaporator through the quick-opening valve without passing through the condenser and the throttle valve, so that the liquid supply amount of the evaporator is reduced, and the evaporation temperature of the evaporator is increased, so that good temperature control can be realized under the condition that electric heating is not needed to participate in output;
5) the multi-point operation and model-free self-tree building algorithm can be adopted, the temperature of a hysteresis target value can be controlled within +/-0.5 ℃ in a constant temperature mode aiming at the temperature control of a large hysteresis system, and the up-down frequent fluctuation is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a refrigeration, heating and temperature control system for an energy-saving reaction kettle and a testing device of the present invention.
In the figure, 1 is an expansion tank, 101 is an exhaust stop valve, 102 is a one-way valve, 2 is a gas-liquid separator, 201 is a circulating pump, 3 is an evaporator, 4 is a heating pipe, 5 is a micro radiator, 6 is a liquid filling port, 7 is a compressor, 71 is a high-low pressure controller, 8 is a heat regenerator, 81 is an oil filling low-pressure meter, 82 is an oil filling high-pressure meter, 9 is an oil separator, 91 is a (Kashituo) quick opening valve, 92 is a (hot gas) air conditioning valve, 93 is a silencer, 10 is a casing condenser, 11 is a liquid storage tank, 12 is a drying filter, 121 is an expansion valve, 122 is an auxiliary liquid supply electromagnetic valve, 123 is a copper ball valve, 13 is a liquid spray electromagnetic valve, and 14 is an auxiliary air conditioning valve.
Detailed Description
The present invention will be described in further detail with reference to examples and embodiments.
As shown in fig. 1, the energy-saving reaction kettle and the refrigeration heating temperature control system for the test equipment structurally comprise a circulation system and a refrigeration system.
The circulation system include including expansion tank 1, vapour and liquid separator 2, evaporimeter 3, heating pipe 4 and miniature radiator 5, 1 top of expansion tank is through the 2 tops of pipe connection vapour and liquid separator of having exhaust stop valve 101, 1 bottom of expansion tank is through the 2 sides of pipe connection vapour and liquid separator of having check valve 102, heat-conducting medium advances the pipe to connect 2 sides of vapour and liquid separator, 2 bottoms of vapour and liquid separator connect gradually circulating pump 201 through the pipeline, 3 first passageways of evaporimeter, 4 heat-conducting medium exit tubes of heating pipe, all be equipped with temperature sensor on the pipeline in the circulation system respectively, miniature radiator 5 passes through the pipeline and connects respectively 1 bottoms of expansion tank and pipeline between check valve 102 and the vapour and liquid separator 2, heat-conducting medium advances to manage and all be equipped with temperature sensor on the heating pipe 4 respectively.
The expansion tank 1 is provided with a liquid level meter and a liquid filling port 6 at the top.
The circulating system is a fully-closed system, oil mist does not exist at high temperature, moisture in air is not absorbed at low temperature, pressure cannot rise due to high temperature during operation of the system, and heat-conducting media are automatically supplemented at low temperature.
The heat conducting oil filling of the circulating system comprises the following steps: the heat conducting oil is injected into the expansion tank 1, the exhaust stop valve 101 is opened, the internal circulating pump 201 is opened, the heat conducting oil is pumped into the system from the expansion tank 1, meanwhile, air in the system is discharged, the air in the system is continuously discharged through the continuous injection of the heat conducting oil, and the exhaust stop valve 101 is closed until most air in the system is discharged. So as to form a circulating system without contacting with air. (the first exhaust may have a little residual air in the system, which is carried out along the expansion process through several temperature raising and lowering processes.)
After the equipment is started, the circulating pump 201 can always run, the temperature of the medium outlet is detected through the temperature sensor arranged on the circulating pipeline, so that the running of the refrigeration compressor is controlled, and meanwhile, the output proportion of the electric heating pipe 4 is adjusted through the three-phase voltage regulator, so that the accurate temperature control is realized.
The refrigeration system comprises a compressor 7, a heat regenerator 8, an oil separator 9, a casing condenser 10 and a liquid storage tank 11, wherein the compressor 7 is respectively connected with the top and the bottom of the oil separator 9 through pipelines, the top of the oil separator 9 is also connected with the bottom of the casing condenser 10 through a pipeline, the bottom of the casing condenser 10 is connected with the top of the liquid storage tank 11 through a pipeline, the bottom of the casing condenser 10 is connected with a cooling water outlet pipe and a cooling water inlet pipe with a condensation pressure regulating valve, the top of the liquid storage tank 11 is connected with a drying filter 12 through a pipeline, the drying filter 12 is connected with a first passage of the heat regenerator 8 through a pipeline with a throttling device, the first passage of the heat regenerator 8 is connected with a second passage of the evaporator 3 through a pipeline, the second passage of the evaporator 3 is connected with the second passage of the heat regenerator 8 through a pipeline, the second passage of the heat regenerator 8 is connected with the compressor 7 through a pipeline, a pipeline between the oil separator 9 and the A hot gas bypass pipe is arranged between the two.
The throttling device comprises an expansion valve 121 arranged on a pipeline between the dry filter 12 and the regenerator 8, and an auxiliary liquid supply electromagnetic valve 122 and a copper ball valve 123 arranged on a bypass pipeline of the pipeline between the dry filter 12 and the regenerator 8.
The hot gas bypass pipe is provided with a quick opening valve 91, an air conditioning valve 92 and a silencer 93.
An oil charge low pressure meter 81 is arranged on a pipeline between the second passage of the heat regenerator 8 and the compressor 7, an oil charge high pressure meter 82 is arranged on a pipeline between the compressor 7 and the top of the oil separator 9, and the pipelines between the second passage of the heat regenerator 8 and the compressor 7 and between the compressor 7 and the top of the oil separator 9 are connected with the high-low pressure controller 71.
In the refrigeration mode, the compressor 7 operates to compress the gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, the refrigerant carried in the refrigerant steam is separated by the oil separator, the refrigerant returns to the compressor 7 through an oil return pipe, the refrigerant is condensed into a high-pressure liquid refrigerant after passing through the casing condenser 10, impurities and water are filtered out through the drying filter 12, then the liquid refrigerant enters the throttling device, when the refrigerant is directly refrigerated from high temperature, the auxiliary liquid supply electromagnetic valve 122 is opened to supply liquid into the heat regenerator 8 and the evaporator 3, when the temperature is reduced to a certain set value, the auxiliary liquid supply electromagnetic valve 122 is closed, the throttled liquid refrigerant firstly passes through the heat regenerator 8 and is evaporated in the heat regenerator 8 to exchange heat with the gaseous refrigerant coming out of the evaporator 3, and the return air temperature of the compressor 7 is ensured not to be overhigh. In the cooling mode, when the temperature is reduced to be close to the set value, the hot gas bypass function starts to intervene to participate in the regulation of the cooling capacity, and the temperature control requirement is realized through the output proportion of the quick opening valve 91. The hot gas bypass can be manually adjusted through an air conditioner valve 92, and a silencer 93 is arranged at the rear part, so that no great air flow noise exists in the hot gas bypass process.
The heating pipe 4 is a U-shaped light pipe, and the heating pipe 4 is connected with a three-phase voltage regulator and a mechanical temperature protection switch.
In the heating mode, the heating pipe 4 is arranged in the liquid storage tank by adopting a U-shaped light pipe, the output proportion of heating power is adjusted by a three-phase voltage regulator according to a set temperature value, and the heating pipe is effectively prevented from being burnt dry by being provided with a mechanical temperature protection switch.
And pipelines with a liquid spraying electromagnetic valve 13 and a secondary air-conditioning valve 14 are connected between the pipeline between the dry filter 12 and the expansion valve 121 and the pipeline between the second passage of the evaporator 3 and the second passage of the heat regenerator 8.
All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (7)
1. The energy-saving reaction kettle and the refrigeration heating temperature control system for the test equipment are characterized by comprising a circulation system and a refrigeration system,
the circulating system comprises an expansion tank (1), a gas-liquid separator (2) and an evaporator (3), the heat pump system comprises a heating pipe (4) and a micro radiator (5), wherein the top of an expansion tank (1) is connected with the top of a gas-liquid separator (2) through a pipeline with an exhaust stop valve (101), the bottom of the expansion tank (1) is connected with the side of the gas-liquid separator (2) through a pipeline with a one-way valve (102), the side of the gas-liquid separator (2) is connected with a heat-conducting medium inlet pipe, the bottom of the gas-liquid separator (2) is sequentially connected with a circulating pump (201), a first passage of an evaporator (3) and a heat-conducting medium outlet pipe of the heating pipe (4) through pipelines, the pipelines in a circulating system are respectively provided with a temperature sensor, the micro radiator (5) is respectively connected with the bottom of the expansion tank (1) and the pipeline between the one-way valve (102) and the gas-liquid separator (2;
the refrigeration system comprises a compressor (7), a heat regenerator (8), an oil separator (9), a sleeve condenser (10) and a liquid storage tank (11), wherein the compressor (7) is respectively connected with the top and the bottom of the oil separator (9) through pipelines, the top of the oil separator (9) is also connected with the bottom of the sleeve condenser (10) through a pipeline, the bottom of the sleeve condenser (10) is connected with the top of the liquid storage tank (11) through a pipeline, the bottom of the sleeve condenser (10) is connected with a cooling water outlet pipe and a cooling water inlet pipe with a condensing pressure regulating valve, the top of the liquid storage tank (11) is connected with a drying filter (12) through a pipeline, the drying filter (12) is connected with a first passage of the heat regenerator (8) through a pipeline with a throttling device, the first passage of the heat regenerator (8) is connected with a second passage of an evaporator (3) through a pipeline, the second passage of the evaporator (3) is connected with, the second passage of the heat regenerator (8) is connected with the compressor (7) through a pipeline, and a hot gas bypass pipe is arranged between the pipeline between the oil separator (9) and the sleeve condenser (10) and the pipeline between the first passage of the heat regenerator (8) and the second passage of the pipeline connecting evaporator (3).
2. The energy-saving reaction kettle and the refrigeration heating temperature control system for the test equipment as claimed in claim 1, wherein the expansion tank (1) is provided with a liquid level meter and a liquid filling port (6) at the top.
3. The system according to claim 1, wherein the throttling device comprises an expansion valve (121) disposed in the pipe between the dry filter (12) and the heat regenerator (8), and an auxiliary liquid supply solenoid valve (22) and a copper ball valve (123) disposed in the bypass pipe between the dry filter (12) and the heat regenerator (8).
4. The energy-saving reaction kettle and the refrigeration heating temperature control system for the test equipment as claimed in claim 1, wherein the hot gas bypass pipe is provided with a quick-opening valve (91), an air-conditioning valve (92) and a silencer (93).
5. The system of claim 1, wherein an oil-filled low-pressure gauge (81) is disposed on a pipeline between the second path of the heat regenerator (8) and the compressor (7), an oil-filled high-pressure gauge (82) is disposed on a pipeline between the compressor (7) and the top of the oil separator (9), and pipelines between the second path of the heat regenerator (8) and the compressor (7) and pipelines between the compressor (7) and the top of the oil separator (9) are connected to the high-low pressure controller (71).
6. The energy-saving reaction kettle and the refrigeration and heating temperature control system for the testing equipment as claimed in claim 1, wherein the heating tube (4) is a U-shaped light tube, and the heating tube (4) is connected to a three-phase voltage regulator and a mechanical temperature protection switch.
7. The system of claim 3, wherein a pipeline having a liquid injection solenoid valve (13) and an auxiliary air conditioning valve (14) is connected between the pipeline between the dry filter (12) and the expansion valve (121) and the pipeline between the second path of the evaporator (3) and the second path of the heat regenerator (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020113312.4U CN211552130U (en) | 2020-01-19 | 2020-01-19 | Energy-saving reation kettle and refrigeration heating temperature control system for test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020113312.4U CN211552130U (en) | 2020-01-19 | 2020-01-19 | Energy-saving reation kettle and refrigeration heating temperature control system for test equipment |
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| CN211552130U true CN211552130U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020113312.4U Active CN211552130U (en) | 2020-01-19 | 2020-01-19 | Energy-saving reation kettle and refrigeration heating temperature control system for test equipment |
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| CN (1) | CN211552130U (en) |
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