CN207280043U - A kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system - Google Patents
A kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system Download PDFInfo
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- CN207280043U CN207280043U CN201720918797.2U CN201720918797U CN207280043U CN 207280043 U CN207280043 U CN 207280043U CN 201720918797 U CN201720918797 U CN 201720918797U CN 207280043 U CN207280043 U CN 207280043U
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Abstract
The utility model discloses a kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system, including the refrigerant pipeline equipped with compressor and oil eliminator and the cold-trap pipeline being located in external vacuum equipment, the refrigerant pipeline is divided into the first pipeline of direct reflux compressor suction line after oil eliminator, followed by cold-trap pipeline, the cold side of heat exchanger, the second pipeline of compressor suction line and the hot side followed by regenerator are accessed after the cold side of regenerator, the 3rd pipeline of cold-trap pipeline is imported after the hot side of heat exchanger, 3rd pipeline is equipped with the first control valve and first throttle valve, neighbouring first control valve and first throttle valve are equipped with heating unit.Accumulation is heated into more than recovery to condensation point even room temperature in the compressor oil of valve body by heating, the compressor oil of liquid is directly rushed at cold-trap pipeline by refrigerant, by clearing up micro compressor oil of the accumulation in valve body in time, the blocking or stuck of the first control valve and first throttle valve effectively prevent.
Description
Technical field
Ultralow temperature steam trapping pumping unit field is the utility model is related to, more particularly to a kind of ultralow temperature steam trapping pump system
The grease proofing stifled heating unit of system.
Background technology
At present, the course of work of known ultralow temperature steam trapping pumping unit is as follows：The cryogenic refrigeration discharged by compressor
Agent flows into cold-trap pipeline through refrigeration pipeline and is evaporated, and then cold-trap pipeline is down to ultra low temperature state to reach trapping steam
Purpose；The hot refrigerant of high temperature and pressure discharged by compressor flows into cold-trap pipeline through defroster duct, realizes cold-trap pipeline
Heating, makes cold-trap pipeline return to room temperature.
During using the equipment, have the following disadvantages：Equipment is run and repeatedly by refrigerating state for a long time
Defrosting state is switched to, in defroster duct, the hot refrigerant of high temperature and pressure of compressor discharge contains compressor oil, and presses
Contracting machine oil can be constantly accumulated in the refrigeration pipeline in parallel with defroster duct, can especially accumulate the valve body in refrigeration pipeline
Place, since the temperature in refrigeration pipeline is extremely low, the compressor oil accumulated in refrigeration pipeline solidifies in the state of ultralow temperature, so that
Cause the blocking or stuck of refrigeration pipeline, influence the normal operation of the equipment.
Utility model content
Technical problem to be solved in the utility model be to provide it is a kind of avoid compressor oil block and operate steadily
The trapping of ultralow temperature steam pump grease proofing stifled heating unit.
Technical solution used by solve above-mentioned technical problem：A kind of grease proofing block up of ultralow temperature steam trapping pumping system adds
Thermal, including the refrigerant pipeline equipped with compressor and oil eliminator and the cold-trap pipeline that is located in external vacuum equipment, it is described
Refrigerant pipeline be divided into after oil eliminator the first pipeline of direct reflux compressor suction line, followed by cold-trap pipeline, change
The second pipeline of compressor suction line and the heat followed by regenerator are accessed after the cold side of hot device, the cold side of regenerator
Side, heat exchanger hot side after import the 3rd pipeline of cold-trap pipeline, the 3rd pipeline imports cold-trap pipe after heat exchanger is flowed through
The first control valve and first throttle valve are equipped with before road, heating unit is equipped with neighbouring first control valve and first throttle valve.
Further, the heating unit is electrical heating elements.
Further, the heating unit is the heat absorbing element being located on the second pipeline.
Further, first control valve includes the refrigeration hand valve for being sequentially arranged at the 3rd pipeline and refrigeration solenoid valve.
Further, defrosting hand valve and defrosting solenoid valve are equipped with second pipeline successively.
Further, the heat exchanger includes the First Heat Exchanger being located between regenerator and cold-trap pipeline, the 3rd pipeline
The first gas-liquid separator is connected with after the hot side of regenerator is flowed through, the first gas-liquid separator separates the first of access gas tank
Gas piping, the second gas pipeline for accessing First Heat Exchanger hot side and the second pipeline of remittance are cold so as to flow through First Heat Exchanger
First liquid line of side, the first gas pipeline are equipped with the second control valve, and the gas tank passes through equipped with the second throttling
The pressure relief pipe of valve accesses the first pipeline, and third control valve and the 3rd throttle valve are equipped with successively on first liquid line.
Further, the heat exchanger includes the second heat exchanger being located between First Heat Exchanger and cold-trap pipeline, flows through first
The second gas pipeline of heat exchanger hot side is connected with the second gas-liquid separator, and the second gas-liquid separator has separated the heat exchange of access second
The third gas pipeline of device hot side and the second pipeline is imported so as to flow through the second liquid pipeline of the second heat exchanger cold side, described the
Two liquid lines are equipped with the 4th throttle valve.
Further, the heat exchanger includes the 3rd heat exchanger being located between the second heat exchanger and cold-trap pipeline, flows through second
The third gas pipeline of heat exchanger hot side is connected with liquid trap, and liquid trap separates the 3rd liquid of the 3rd heat exchanger hot side of access
So as to flow through the 4th liquid line of the 3rd heat exchanger cold side, the 4th liquid line is equipped with for pipeline and the second pipeline of remittance
5th throttle valve, second pipeline are equipped with the 4th control valve between cold-trap pipeline and the 3rd heat exchanger, second pipeline according to
It is secondary to flow through cold-trap pipeline, the 4th control valve, the cold side of the 3rd heat exchanger, the cold side of the second heat exchanger, the cold side of First Heat Exchanger
With access compressor suction line after the cold side of regenerator.
Further, the heat exchanger included cold heat exchanger, and the 3rd liquid line stream passes through the hot side of cold heat exchanger
The 5th liquid line for importing cold-trap pipeline is separated afterwards and stream accesses the of the 3rd heat exchanger cold side after cold heat exchanger cold side
Six fluid loops, the 6th liquid line are equipped with the 6th throttle valve.
Further, water-cooled condenser and dry filter are equipped with the 3rd pipeline successively between oil eliminator and regenerator
Device.
Beneficial effect：During defrosting processing is carried out to cold-trap pipeline, heating unit start to work, will accumulation valve body with
And the compressor oil near valve body heats more than recovery to condensation point or even room temperature.Next time is carrying out refrigeration processing to cold-trap pipeline
When, the compressor oil of liquid is directly rushed at cold-trap pipeline by refrigerant, by the way that timely cleaning is accumulated in refrigeration pipeline every time
Micro compressor oil, effectively prevent the blocking or stuck of the first control valve and first throttle valve.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and examples；
Fig. 1 is a kind of grease proofing stifled heating unit piping diagram of ultralow temperature steam trapping pump of the utility model embodiment.
Embodiment
With reference to Fig. 1, a kind of grease proofing stifled heating unit of ultralow temperature steam trapping pump of the utility model embodiment, including equipped with
The refrigerant pipeline of compressor 1 and oil eliminator 2 and the cold-trap pipeline 21 being located in external vacuum equipment, the refrigerant pipeline is through oil
Be divided into after separator 2 direct 1 suction line of reflux compressor the first pipeline, followed by cold-trap pipeline 21, heat exchanger it is cold
Side, regenerator 5 cold side after access the second pipeline and hot side followed by regenerator 5, the heat exchange of 1 suction line of compressor
The 3rd pipeline of cold-trap pipeline 21 is imported after the hot side of device.
Wherein, defrosting hand valve 23 and defrosting solenoid valve 24 are equipped with the second pipeline successively.Heat exchanger includes being located at regenerator 5
First Heat Exchanger 7 between cold-trap pipeline 21, the 3rd pipeline are connected with the first gas-liquid separator after the hot side of regenerator 5 is flowed through
6, the first gas-liquid separator 6 separates the first gas pipeline of access gas tank 25, accesses the second gas of 7 hot side of First Heat Exchanger
Body pipeline and the second pipeline of remittance set so as to flow through the first liquid line of 7 cold side of First Heat Exchanger on first gas pipeline
There is the second control valve 26, gas tank 25 accesses the first pipeline, the first liquid line by the pressure relief pipe equipped with second throttle 27
8 and the 3rd throttle valve 9 of third control valve is equipped with road successively.The second heat exchange is equipped between First Heat Exchanger 7 and cold-trap pipeline 21
Device 11, the second gas pipeline for flowing through 7 hot side of First Heat Exchanger are connected with the second gas-liquid separator 10, the second gas-liquid separator 10
Third gas pipeline and the second pipeline of remittance for separating access 11 hot side of the second heat exchanger are cold so as to flow through the second heat exchanger 11
The second liquid pipeline of side, second liquid pipeline are equipped with the 4th throttle valve 12.Between the second heat exchanger 11 and cold-trap pipeline 21
Equipped with the 3rd heat exchanger 14, the third gas pipeline for flowing through 11 hot side of the second heat exchanger is connected with liquid trap 13, and liquid trap 13 divides
Go out to have the 3rd liquid line of access 14 hot side of the 3rd heat exchanger and import the second pipeline so as to flow through 14 cold side of the 3rd heat exchanger
The 4th liquid line, the 4th liquid line is equipped with the 5th throttle valve 15, and the second pipeline exchanges heat in cold-trap pipeline 21 and the 3rd
It is equipped with the 4th control valve 22 between device 14, the second pipeline is followed by cold-trap pipeline 21, the 4th control valve 22, the 3rd heat exchanger 14
1 suction line of compressor is accessed after cold side, the cold side of the second heat exchanger 11, the cold side of the cold side of First Heat Exchanger 7 and regenerator 5
Road.Cold heat exchanger 16 was connected with after the 3rd liquid line, the 3rd liquid line stream divides after the hot side of cold heat exchanger 16
The 5th liquid line and stream for going out to import cold-trap pipeline 21 access 14 cold side of the 3rd heat exchanger after 16 cold side of cold heat exchanger
6th fluid loop, the 6th liquid line are equipped with the 6th throttle valve 17.
Wherein, refrigeration hand valve 18, first throttle valve 19 and refrigeration solenoid valve 20 are equipped with the 5th liquid line successively, it is neighbouring
Heating unit is equipped with first throttle valve 19 and refrigeration solenoid valve 20.During defrosting processing is carried out to cold-trap pipeline 21, heating
Device start to work, by accumulate first throttle valve 19 and refrigeration solenoid valve 20 near compressor oil heating recover to condensation point with
Upper even room temperature.Next time, refrigerant directly rushed at the compressor oil of liquid cold when carrying out refrigeration processing to cold-trap pipeline 21
Trap pipeline 21, by timely micro compressor oil of the cleaning accumulation near valve body and valve body every time, effectively prevent the
The blocking or stuck of one throttle valve 19 and refrigeration solenoid valve 20.
Preferably, heating unit is electrical heating elements, the heat produced by heating element realizes heating, by compressor
Oil heats more than recovery to condensation point or even room temperature.
Preferably, heating unit is the heat absorbing element 28 being located on the second pipeline, heat absorbing element 28 is defrosted by absorbing
Heat on pipeline, compressor oil heating is recovered to more than condensation point even room temperature.
Preferably, it is equipped with water-cooled condenser 3 and dried on the 3rd pipeline successively between oil eliminator 2 and regenerator 5
Filter 4.
With reference to Fig. 1, a kind of grease proofing stifled heating unit concrete operating principle of ultralow temperature steam trapping pump of the present embodiment is as follows：
The oil-containing high pressure-temperature non-azeotropic refrigerant that compressor 1 is discharged divide into three tunnels after oil eliminator 2.
The first via is successively by having water-cooled condenser 3, device for drying and filtering 4,5 and first vapour liquid separator 6 of regenerator.System
Cryogen enters 3 condensing heat-exchange of water-cooled condenser, and drying filter 4 enters regenerator 5 and the heat exchange of return-air low temperature refrigerant is cold
It is solidifying, subsequently into the first vapour liquid separator 6.
Non-azeotropic refrigerant into the vapour-liquid binary states of the first vapour liquid separator 6 realizes separation, and the refrigerant of liquid passes through
Enter 7 evaporation endothermic of First Heat Exchanger after 8 and the 3rd throttle valve 9 of third control valve, then return to pressure after regenerator 5 again
The suction side of contracting machine 1.
Vaporized refrigerant after the separation of the first vapour liquid separator 6 is divided into two-way：All the way by the second control valve 26 into
Enter gas tank 25, another way enters First Heat Exchanger 7, and the refrigerant with entering the evaporation of First Heat Exchanger 7 through the 3rd throttle valve 9 changes
Heat, subsequently into the second vapour liquid separator 10.
Non-azeotropic refrigerant into the vapour-liquid binary states of the second vapour liquid separator 10 realizes separation, and the refrigerant of liquid passes through
Enter 11 evaporation endothermic of the second heat exchanger after 4th throttle valve 12, then with entering First Heat Exchanger 7 by the 3rd throttle valve 9
Evaporated refrigerant is converged, then the suction side of compressor 1 is returned to through First Heat Exchanger 7, regenerator 5.
Vaporized refrigerant after the separation of the second vapour liquid separator 10 enters the second heat exchanger 11, and through the 4th throttle valve
12 enter the refrigerant heat exchanger of the second heat exchanger 11 evaporation, subsequently into liquid trap 13.
Refrigerant into liquid trap 13 is divided into two-way, is steamed after flowing through the 5th throttle valve 15 all the way into the 3rd heat exchanger 14
Hair heat absorption, then converges with entering the evaporated refrigerant of the second heat exchanger 11 by the 4th throttle valve 12, then through First Heat Exchanger
7th, regenerator 5 returns to the suction side of compressor 1.
Another way enters the 3rd heat exchanger 14, and the refrigerant with entering the evaporation of the 3rd heat exchanger 14 through the 5th throttle valve 15 changes
Heat, subsequently into cold heat exchanger 16 excessively.
Into cold heat exchanger 16 and by supercooling refrigerant be divided into two-way outlet, enter all the way through the 6th throttle valve 17
Cross cold heat exchanger 16 to evaporate, supercooling heat exchange, Ran Houyu are carried out to the refrigerant for entering cold heat exchanger 16 through the 3rd heat exchanger 14
Converge by the evaporated refrigerant of the 5th throttle valve 15 into the 3rd heat exchanger 14 through the second heat exchanger 11, First Heat Exchanger 7, return
Hot device 5 returns to the suction side of compressor 1.
Another way refrigerant enters external vacuum equipment by refrigeration hand valve 18, first throttle valve 19, refrigeration solenoid valve 20
21 evaporation endothermic of cold-trap pipeline, realize that cold-trap pipeline 21 cools down, when the surface of cold-trap pipeline 21 reaches ultralow temperature, start to catch
Vapour molecule in the residing vacuum environment of collection.Refrigerant is flowed out through cold-trap pipeline 21, and the 3rd is returned to after the 4th control valve 22
Heat exchanger 14, the evaporated refrigerant with entering the 3rd heat exchanger 14 by the 5th throttle valve 15 are converged through the second heat exchanger 11, the
One heat exchanger 7, regenerator 5 return to the suction side of compressor 1.
Second tunnel is oil return line, and oil eliminator 2 is connected with the suction line of compressor 1.Compression in oil eliminator 2
Machine oil is accumulated to after certain altitude, its internal oil level control ball-cock assembly is opened, the suction line that compressor oil passes through compressor 1
Return to compressor 1.
3rd tunnel：The refrigerant of high temperature and pressure enters exterior by defrosting hand valve 23, defrosting solenoid valve 24, heat absorbing element 28
The cold-trap pipeline 21 of vacuum equipment, and carry out heating to the cold-trap pipeline 21 in ultra low temperature state and rise again, allow it to be set in vacuum
It is standby fill air before return to room temperature, in order to avoid the surface knot condensed water or frost of cold-trap pipeline 21, the refrigeration after cold-trap pipeline 21
Agent returns to the 3rd heat exchanger 14 after the 4th control valve 22, the evaporation system with entering the 3rd heat exchanger 14 by the 5th throttle valve 15
Cryogen converges the suction side that compressor 1 is returned to through the second heat exchanger 11, First Heat Exchanger 7, regenerator 5.
When equipment detects that 1 discharge pressure of compressor is excessive, the second control valve 26 is opened, and some refrigerant is discharged into storage
Gas tank 25, the refrigerant into gas tank 25 slowly return to the suction line of compressor 1 by second throttle 27.
The a set of heat absorbing element 28 of installation, the heat source of heat absorbing element 28 come from refrigeration solenoid valve 20, first throttle valve 19
The defroster duct discharged through compressor 1, when cold-trap pipeline 21 needs to rise again, refrigeration solenoid valve 20 is closed, and defrost solenoid valve 24
Open, first throttle valve 19, refrigeration solenoid valve 20 are heated through heat absorbing element 28 by the high temperature hot gas that compressor 1 is discharged, are allowed to
The micro compressor oil of built up inside recovers to more than condensation point even room temperature, so as to avoid causing accumulation in valve because temperature is too low
The micro compressor oil solidification in internal portion, so as to influence its normal work.When solenoid valve 20 and the refrigeration hand valve 18 of freezing next time
After unlatching, it is heated to be rushed at there are the micro compressor oil in valve body before and is returned to through equipment suction line after cold-trap pipeline 21
Compressor 1, causes freeze hand valve 18, first throttle valve 19, refrigeration solenoid valve so as to avoid because micro compressor oil is accumulated
The oil that 20 malfunctions occur blocks up failure.
The embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
Embodiment is stated, in the knowledge that the technical field those of ordinary skill possesses, this practicality can also not departed from
Various changes can be made on the premise of new objective.
Claims (10)
1. a kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system, including the refrigerant equipped with compressor and oil eliminator
Pipeline and the cold-trap pipeline being located in external vacuum equipment, the refrigerant pipeline are divided into direct reflux compressor after oil eliminator
First pipeline of suction line, followed by after cold-trap pipeline, the cold side of heat exchanger, the cold side of regenerator access compressor suction
Second pipeline of pipeline and the hot side followed by regenerator, the 3rd pipeline that cold-trap pipeline is imported after the hot side of heat exchanger,
3rd pipeline is equipped with the first control valve and first throttle valve before cold-trap pipeline is imported after flowing through heat exchanger, its feature exists
In：Heating unit is equipped with neighbouring first control valve and first throttle valve.
2. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 1, it is characterised in that：It is described
Heating unit is electrical heating elements.
3. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 1, it is characterised in that：It is described
Heating unit is the heat absorbing element being located on the second pipeline.
4. the grease proofing stifled heating unit of the ultralow temperature steam trapping pumping system according to Claims 2 or 3, it is characterised in that：
First control valve includes the refrigeration hand valve for being sequentially arranged at the 3rd pipeline and refrigeration solenoid valve.
5. the grease proofing stifled heating unit of the ultralow temperature steam trapping pumping system according to Claims 2 or 3, it is characterised in that：
Defrosting hand valve and defrosting solenoid valve are equipped with second pipeline successively.
6. the grease proofing stifled heating unit of the ultralow temperature steam trapping pumping system according to Claims 2 or 3, it is characterised in that：
The heat exchanger includes the First Heat Exchanger being located between regenerator and cold-trap pipeline, and the 3rd pipeline is flowing through the heat of regenerator
It is connected with the first gas-liquid separator behind side, the first gas-liquid separator separates the first gas pipeline of access gas tank, access the
The second gas pipeline and the second pipeline of remittance of one heat exchanger hot side are so as to flow through the first liquid line of First Heat Exchanger cold side
Road, the first gas pipeline are equipped with the second control valve, and the gas tank is connect by the pressure relief pipe equipped with second throttle
Enter the first pipeline, third control valve and the 3rd throttle valve are equipped with successively on first liquid line.
7. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 6, it is characterised in that：It is described
Heat exchanger includes the second heat exchanger being located between First Heat Exchanger and cold-trap pipeline, flows through the second gas of First Heat Exchanger hot side
Pipeline is connected with the second gas-liquid separator, and the second gas-liquid separator separates the third gas pipeline of the second heat exchanger hot side of access
With the second pipeline is imported so as to flow through the second liquid pipeline of the second heat exchanger cold side, the second liquid pipeline is equipped with the
Four throttle valves.
8. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 7, it is characterised in that：It is described
Heat exchanger includes the 3rd heat exchanger being located between the second heat exchanger and cold-trap pipeline, flows through the third gas of the second heat exchanger hot side
Pipeline is connected with liquid trap, liquid trap separate the 3rd liquid line of the 3rd heat exchanger hot side of access and import the second pipeline from
And the 4th liquid line of the 3rd heat exchanger cold side is flowed through, and the 4th liquid line is equipped with the 5th throttle valve, and described second
Pipeline is equipped with the 4th control valve between cold-trap pipeline and the 3rd heat exchanger, and second pipeline is followed by cold-trap pipeline, the 4th
Accessed after control valve, the cold side of the 3rd heat exchanger, the cold side of the second heat exchanger, the cold side of the cold side of First Heat Exchanger and regenerator
Compressor suction line.
9. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 8, it is characterised in that：It is described
Heat exchanger included cold heat exchanger, and the 3rd liquid line stream separates after the hot side of cold heat exchanger imports cold-trap pipeline
5th liquid line and stream access the 6th fluid loop of the 3rd heat exchanger cold side, the 6th liquid after cold heat exchanger cold side
Body pipeline is equipped with the 6th throttle valve.
10. the grease proofing stifled heating unit of ultralow temperature steam trapping pumping system according to claim 9, it is characterised in that：Institute
State and be equipped with water-cooled condenser and device for drying and filtering on the 3rd pipeline successively between oil eliminator and regenerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918797.2U CN207280043U (en) | 2017-07-26 | 2017-07-26 | A kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918797.2U CN207280043U (en) | 2017-07-26 | 2017-07-26 | A kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system |
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| Publication Number | Publication Date |
|---|---|
| CN207280043U true CN207280043U (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720918797.2U Active CN207280043U (en) | 2017-07-26 | 2017-07-26 | A kind of grease proofing stifled heating unit of ultralow temperature steam trapping pumping system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412675A (en) * | 2020-04-07 | 2020-07-14 | 广州协义自动化科技有限公司 | Ultralow-temperature water vapor capture pump pipeline system using secondary refrigerant for cold storage |
-
2017
- 2017-07-26 CN CN201720918797.2U patent/CN207280043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412675A (en) * | 2020-04-07 | 2020-07-14 | 广州协义自动化科技有限公司 | Ultralow-temperature water vapor capture pump pipeline system using secondary refrigerant for cold storage |
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