CN110671326A

CN110671326A - Screw type water vapor compressor unit and working method

Info

Publication number: CN110671326A
Application number: CN201911106615.1A
Authority: CN
Inventors: 童建云; 张立江; 尤建
Original assignee: Shandong Jurong Heavy Industry Technology Co Ltd
Current assignee: Shandong Jurong Heavy Industry Technology Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-01-10

Abstract

The invention relates to a screw type water vapor compressor unit, which comprises a main motor, a screw type compressor, a gas-liquid separator, an oil tank, an oil cooler and a soft water tank, wherein the output end of the main motor is connected with the screw type compressor through a coupler; compared with the original pump body pressurization mode, the screw compressor has better pressurization capacity; an oil circuit circulation mode is adopted, so that the lubricating oil in the compressor is effectively cooled, and the problem that the lubricating efficiency is reduced due to overhigh temperature of the lubricating oil is solved; reduce the metal debris that lubricating oil carried after using through the coarse oil filter, reduce the damage to the oil pump, filter once more through the essential oil filter simultaneously, reduce the damage to screw compressor.

Description

Screw type water vapor compressor unit and working method

Technical Field

The invention relates to the technical field of steam pressurization, in particular to a screw type water vapor compressor unit and a working method.

Background

High-pressure steam plays an important role in many industrial productions, while the existing steam supercharging technology is mainly realized by pump type supercharging, meanwhile, the pump body is overheated due to working in a high-temperature and high-pressure environment, the loss of a mechanical structure is increased, the service life of the pump body is shortened, the existing cooling mode of the pump body is mostly water cooling, when the temperature of the lubricating oil in the pump body rises, the lubricating efficiency is reduced, and the existing compressor with few oil paths for circulation, because of the lack of external structure, the oil circuit can not meet the requirement after circulating to the oil tank, meanwhile, metal debris generated by the working abrasion of the compressor and the lubricating oil can flow back to the oil tank together, and when the lubricating oil flows through the oil pump, the metal debris can cause the loss of the pump, meanwhile, the returned metal debris can cause secondary damage to the compressor, and therefore a screw type water vapor compressor unit and a working method are provided.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a screw type water vapor compressor unit and a working method, the pressure of steam is increased through a screw type compressor, meanwhile, the problem of overheating of the device during working is effectively solved through an external circulation structure and the addition of soft water, meanwhile, the problem of metal debris backflow is effectively avoided through a crude oil filter and an essential oil filter in oil circuit circulation, and the temperature controller can control the oil temperature of the backflow screw type compressor.

In order to achieve the purpose, the technical scheme of the invention is as follows: a screw type water vapor compressor unit comprises a main motor, a screw type compressor, a gas-liquid separator, an oil tank, an oil cooler and a soft water tank, wherein the output end of the main motor is connected with the screw type compressor through a coupler, the gas inlet end of the screw type compressor is connected with a steam inlet pipe, the gas outlet end of the screw type compressor is connected with one end of a steam outlet pipe, the other end of the steam outlet pipe is connected with the gas-liquid separator, the lower end of the gas-liquid separator is communicated with a drainage header pipe and an auxiliary water spraying pipeline, the output end of the soft water tank is communicated with the steam inlet pipe through a pipeline, a condensation discharge port pipeline of the screw type compressor is communicated with the drainage header pipe, the screw type compressor is provided with double exhaust steam discharge ports, the exhaust steam discharge ports extend outwards through pipelines, an oil inlet pipeline of the oil tank is communicated with, the oil outlet end pipeline of the oil cooler is communicated with the temperature controller, and the temperature controller pipeline is communicated with the oil inlet end of the screw compressor.

Preferably, the steam inlet pipe is provided with an air suction filter, the soft water tank and the communication point of the steam inlet pipe are positioned between the air suction filter and the screw compressor, and the pipeline of the soft water tank communicated with the air inlet pipe is provided with a water pump.

Preferably, a coarse oil filter and an oil pump are arranged on a pipeline between the oil tank and the oil cooler, the oil pump is arranged at the tail end of the coarse oil filter, and the coarse oil filter is in parallel connection and double-row type.

Preferably, an essential oil filter is arranged on a pipeline between the temperature controller and the screw compressor, the essential oil filter is in a double-row parallel connection mode, and the oil cooling tank is provided with a cold water inlet and a hot water outlet.

Preferably, the middle part of the steam outlet pipe is communicated with a bypass pipeline, and the bypass pipeline is connected back to the end of the steam inlet pipe close to the screw compressor.

Preferably, the air inlet end of the steam inlet pipe is communicated with a steam hot oil pipeline, the steam hot oil pipeline penetrates through the oil tank and then is communicated with the main drainage pipe, the air inlet end of the steam inlet pipe is communicated with a condensed water drainage pipeline, and the condensed water drainage pipeline is communicated with the main drainage pipe.

Preferably, the crude oil filter is clamped on a fixed frame, a left cantilever of the fixed frame is provided with a left cavity, a first plug head is slidably mounted in the left cavity, a first compression spring is clamped between the first plug head and the bottom of the left cavity, a first pipe end is embedded in the left cantilever of the fixed frame, the first pipe end penetrates through the left cavity and is embedded into the first plug head cavity, the outer end of the left cavity is embedded with a first embedded annular plate, the first plug head can slide in the inner ring of the first embedded ring plate, a right cavity is arranged on a right cantilever of the fixed frame, a second plug head is arranged in the right cavity in a sliding way, a second compression spring is clamped between the second plug head and the bottom of the right cavity, a second end head is embedded and arranged in a right cantilever of the fixed frame, the second end penetrates through the right cavity to be embedded into the second plug cavity, the outer end of the right cavity is embedded with a second embedded annular plate, the second plug head can slide in an inner ring of the second embedded ring plate, and the first pipe end and the second pipe end are both welded with auxiliary positioning plates.

The work flow of the screw type water vapor compressor unit based on claim 1 comprises the following steps:

s1: steam enters the screw compressor through the steam inlet pipe, condensed water is discharged due to the fact that temperature of the pipeline is reduced in the period, and the steam is shunted through the steam hot oil pipeline to heat oil storage in the oil tank;

s2: the motor is started to drive the screw compressor to work and pressurize the inflowing steam;

s3: the oil stored in the oil tank flows out under the action of the oil pump, enters a primary filter through a crude oil filter, and then is shunted to the temperature controller and the oil cooling tank;

s4: the oil cooling tank cools the inflowing hot oil, then the inflowing hot oil flows out to be mixed with the hot oil flowing through the temperature controller, and then the mixture enters the screw compressor through the essential oil filter to lubricate the screw compressor;

s5: at the moment, the water pump works, cold water in the soft water tank enters the screw compressor together with steam through the pipeline, and the screw compressor is cooled;

s6: the screw compressor is used for pressurizing steam and then guiding the steam into a gas-liquid separator through a steam outlet pipe, and the gas-liquid separator is used for carrying out gas-liquid separation on the high-pressure steam of the sweat;

s7: the working condensation drain outlet of the screw compressor discharges excessive water, the oil outlet guides out the oil circulating in the compressor and flows back to the oil tank, and the steps are repeated.

Compared with the prior art, the invention provides a screw type water vapor compressor unit and a working method, and the screw type water vapor compressor unit has the following beneficial effects:

1. compared with the original pump body pressurization mode, the screw compressor has better pressurization capacity;

2. an oil circuit circulation mode is adopted, so that the lubricating oil in the compressor is effectively cooled, and the problem that the lubricating efficiency is reduced due to overhigh temperature of the lubricating oil is solved;

3. reduce the metal debris that lubricating oil carried after using through the coarse oil filter, reduce the damage to the oil pump, filter once more through the essential oil filter simultaneously, reduce the damage to screw compressor.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic view showing the installation structure of the oil outlet filter;

FIG. 5 is a schematic view of a piping connection structure according to the present invention.

In the figure: 1. a main motor; 2. a screw compressor; 3. a bypass line; 4. a gas-liquid separator; 5. a soft water tank; 6. a water pump; 7. a main drain pipe; 8. a temperature controller; 9. an oil cooler; 10. an oil pump; 11. a crude oil filter; 12. a steam inlet pipe; 13. a steam hot oil pipeline; 14. an oil tank; 15. a vapor outlet pipe; 16. an essential oil filter; 17. an oil distributor; 18. a waste steam discharge port; 19. an intake filter; 20. a blower; 21. fixing a frame; 22. a left lumen; 23. an auxiliary positioning plate; 24. a first tube end, 25, a first compression spring; 26. a first embedded ring plate; 27. a first plug head; 28. a second plug head; 29. a second compression spring; 30. a second tube end; 31. a right lumen; 32. a second embedded ring plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 2, 3, 4 and 5, a screw steam compressor unit includes a main motor 1, a screw compressor 2, a gas-liquid separator 4, an oil tank 14, an oil cooler 9 and a soft water tank 5, the above structure is a main composition structure of the present invention, an output end of the main motor 1 is connected to the screw compressor 2 through a coupling, the screw compressor 2 is driven to operate by the power generated by the main motor 1 to pressurize injected steam, an inlet end of the screw compressor 2 is connected to a steam inlet pipe 12 to introduce steam to be pressurized into the screw compressor 2 to pressurize the steam, an outlet end of the screw compressor 2 is connected to one end of a steam outlet pipe 15 to lead pressurized steam out of the screw compressor, the other end of the steam outlet pipe 15 is connected to a gas-liquid separator 4 to effectively separate high-pressure steam, moisture generated by steam liquefaction and soft water introduced into the compressor, then high-pressure steam with less water content is led out, the lower end of the gas-liquid separator 4 is communicated with a drainage header pipe 7 and an auxiliary water spray pipeline, the separated water is recycled and led back to the screw compressor 2, the output end of the soft water tank 5 is communicated with a steam inlet pipe 12 through a pipeline, water and steam are simultaneously led into the screw compressor 2, the compression efficiency is increased, meanwhile, the screw compressor 2 is cooled to avoid overheating, a condensation discharge port pipeline of the screw compressor 2 is communicated with the drainage header pipe 7 to discharge the water produced in the compression process and the water returned by the auxiliary water spray pipeline, the screw compressor 2 is provided with double exhaust steam discharge ports 18, the exhaust steam discharge ports 18 extend outwards through pipelines to discharge the exhaust steam produced in the working process of the screw compressor 2 to avoid reducing the working efficiency, an oil inlet pipeline of the oil tank 14 is communicated with an oil outlet of the screw compressor 2, the lubricating oil that will be heated in screw compressor 2 is derived, oil-out pipeline intercommunication oil cooler 9's of oil tank 14 oil inlet end and temperature controller 8, the hot oil that will derive shunts, and partly cools down, and partly direct circulation, oil cooler 9's the end pipeline intercommunication temperature controller 8 that produces oil advances fine thermoregulation with former hot oil through temperature controller 8 to the cold oil that oil cooler 9 derived, avoids the oil temperature to hang down not good transport excessively, or the too high lubricating efficiency that reduces of oil temperature, the lubricating oil of deriving 8 oil temperature controller 8 pipeline intercommunication screw compressor 2's oil inlet end, the oil that will cool down is led back screw compressor 2 again, lubricates.

The steam advances to be equipped with on the pipe 12 and breathes in filter 19, carries out the excessive to the steam of flowing through, avoids the dust to get into damage screw compressor 2, softened water tank 5 advances between pipe 12's intercommunication point location breathes in filter 19 and screw compressor 2 with the steam, avoids breathing in filter 19 and hinders the soft water circulation, be equipped with water pump 6 on the pipeline of softened water tank 5 intercommunication intake pipe, provide power for rivers.

Be equipped with crude oil filter 11 and oil pump 10 on the pipeline between oil tank 14 and the oil cooler 9, for the flow of lubricating oil provides power, and oil pump 10 locates crude oil filter 11's tail end, avoids thoughtlessly having metal debris damage oil pump 10 in the lubricating oil, crude oil filter 11 is parallelly connected double row formula, and partial pressure flow avoids the problem that single pipeline damaged simultaneously.

Pipeline between temperature controller 8 and the screw compressor 2 is equipped with essential oil filter 16, filters filtered lubricating oil once more, avoids metal debris backward flow screw compressor 2 to damage equipment, and essential oil filter 16 is double parallel, and the partial pressure flow avoids the problem that single pipeline damaged simultaneously, the oil cooling tank is equipped with cold water inlet and hot water outlet, uses water-cooled mode to realize the heat transfer cooling to oil cooler 9.

The middle part of the steam outlet pipe 15 is communicated with a bypass pipeline 3, and the bypass pipeline 3 is connected back to the end of the steam inlet pipe 12 close to the screw compressor 2 to perform certain feedback control.

The air inlet end of the steam inlet pipe 12 is communicated with a steam hot oil pipeline 13, the steam hot oil pipeline 13 penetrates through the oil tank 14 and then is communicated with the main drainage pipe 7, high-temperature steam is shunted to the oil tank 14, lubricating oil is heated, the liquid state is guaranteed, the working efficiency of the oil pump 10 is reduced, the air inlet end of the steam inlet pipe 12 is communicated with a condensed water drainage pipeline, the condensed water drainage pipeline is communicated with the main drainage pipe 7, and moisture generated by condensation in the conveying process is shunted.

The crude oil filter 11 is clamped on a fixed frame 21 and clamped through the positioning of a first plug head 27 and a second plug head 28, a left cantilever of the fixed frame 21 is provided with a left cavity 22 to provide station limitation for the sliding of the first plug head 27, the first plug head 27 is arranged in the left cavity 22 in a sliding mode, the station change is realized through the sliding mode, then, the one end of the crude oil filter 11 is positioned, a first compression spring 25 is clamped between the bottom of the first plug head 27 and the bottom of the left cavity 22 to provide power for the station change of the first plug head 27, a first pipe end 24 is embedded in the left cantilever of the fixed frame 21 and guides lubricating oil in, the first pipe end 24 penetrates through the left cavity 22 and is embedded in the first plug head 27 to realize certain sealing performance, meanwhile, the first plug head 27 and the first pipe end 24 slide relatively, a first embedded ring plate 26 is embedded in the left cavity 22 to limit the first plug head 27 and avoid slipping, the first plug 27 can slide in the inner ring of the first embedded ring plate 26, the right cantilever of the fixed frame 21 is provided with a right cavity 31 for providing station limitation for the second plug 28, the second plug 28 is slidably mounted in the right cavity 31, station change is realized through sliding, and then the other end of the crude oil filter 11 is positioned, a second compression spring 29 is clamped between the bottom of the second plug 28 and the right cavity 31 for providing power for the sliding of the second plug 28, the right cantilever of the fixed frame 21 is embedded with a second end for guiding out lubricating oil, the second end passes through the right cavity 31 to be embedded into the cavity of the second plug 28 for realizing certain sealing performance, meanwhile, the second pipe end 30 and the second plug 28 can slide relatively, the outer end of the right cavity 31 is embedded with a second embedded ring plate 32 for limiting the second plug 28 to avoid slipping, the second plug 28 can slide in the inner ring of the second embedded ring plate 32, the auxiliary positioning plates 23 are welded on the first pipe end 24 and the second pipe end 30, the embedding length of the first pipe end 24 and the second pipe end 30 is limited, and the problems that the first plug-in and the second plug 28 slide in a blocking mode due to overlong or sealing is caused to be blocked due to overlong are avoided.

During installation, the first plug head 27 and the second plug head 28 are retracted and slide through pressure, the first plug head 27 and the second plug head 28 are popped out after the port of the crude oil filter 11 is clamped, and the plug heads are embedded into the port of the crude oil filter 11, so that positioning installation is realized; when the crude oil filter 11 is detached, the crude oil filter 11 is pulled, so that the edge wall of the crude oil filter 11 extrudes the first plug 27 and the second plug 28 to retract, limitation is removed, detachment is achieved, and convenience is improved.

s1: steam enters the screw compressor 2 from the steam inlet pipe 12, condensed water is discharged from the condensed water caused by the temperature reduction of the pipeline in the period, and the stored oil in the oil tank 14 is heated by the steam which is shunted by the steam hot oil pipeline 13;

s2: the motor is started to drive the screw compressor 2 to work and pressurize the inflowing steam;

s3: the stored oil in the oil tank 14 flows out under the action of the oil pump 10, enters the primary filtration through the crude oil filter 11, and then is shunted by the temperature controller 8 and the oil cooling tank;

s4: the oil cooling tank cools the inflowing hot oil, then the inflowing hot oil flows out to be mixed with the hot oil flowing through the temperature controller 8, and then the mixture enters the screw compressor 2 through the essential oil filter 16 to lubricate the screw compressor 2;

s5: at the moment, the water pump 6 works to enable cold water in the soft water tank 5 to enter the screw compressor 2 together with steam through a pipeline, and the screw compressor 2 is cooled;

s6: the screw compressor 2 is used for pressurizing steam and then leading the steam into the gas-liquid separator 4 through the steam outlet pipe 15, and the high-pressure steam of the sweat is subjected to gas-liquid separation through the gas-liquid separator 4;

s7: the condensing discharge port where the screw compressor 2 operates discharges excess water, and the oil outlet conducts oil circulating in the compressor back to the oil tank 14, and the above steps are repeated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

1. The utility model provides a screw steam compressor unit, includes main motor (1), screw compressor (2), vapour and liquid separator (4), oil tank (14), oil cooler (9) and softened water tank (5), its characterized in that: the output end of the main motor (1) is connected with the screw compressor (2) through a coupler, the air inlet end of the screw compressor (2) is connected with a steam inlet pipe (12), the air outlet end of the screw compressor (2) is connected with one end of a steam outlet pipe (15), the other end of the steam outlet pipe (15) is connected with an air-liquid separator (4), the lower end of the air-liquid separator (4) is communicated with a drainage main pipe (7) and an auxiliary water spraying pipeline, the output end of the soft water tank (5) is communicated with the steam inlet pipe (12) through a pipeline, a condensation discharge port pipeline of the screw compressor (2) is communicated with the drainage main pipe (7), the screw compressor (2) is provided with double exhaust steam discharge ports (18), the exhaust steam discharge ports (18) extend outwards through a pipeline, an oil inlet pipeline of the oil tank (14) is communicated with the oil outlet of the screw compressor (2), an oil outlet pipeline of the oil tank (14) is communicated, an oil outlet end pipeline of the oil cooler (9) is communicated with the temperature controller (8), and a pipeline of the temperature controller (8) is communicated with an oil inlet end of the screw compressor (2).

2. A screw steam compressor string as set forth in claim 1 wherein: be equipped with on steam advances pipe (12) and inhale filter (19), softened water tank (5) and the intercommunication point that steam advances pipe (12) are located between inhaling filter (19) and screw compressor (2), be equipped with water pump (6) on the pipeline of softened water tank (5) intercommunication intake pipe.

3. A screw steam compressor string as set forth in claim 1 wherein: be equipped with crude oil filter (11) and oil pump (10) on the pipeline between oil tank (14) and oil cooler (9), and tail end of crude oil filter (11) is located in oil pump (10), crude oil filter (11) are parallelly connected double row formula.

4. A screw steam compressor string as set forth in claim 1 wherein: the pipeline between the temperature controller (8) and the screw compressor (2) is provided with an essential oil filter (16), the essential oil filter (16) is in a double-row parallel connection type, and the oil cooling tank is provided with a cold water inlet and a hot water outlet.

5. A screw steam compressor string as set forth in claim 1 wherein: the middle part of the steam outlet pipe (15) is communicated with a bypass pipeline (3), and the bypass pipeline (3) is connected with the end of the steam inlet pipe (12) close to the screw compressor (2).

6. A screw steam compressor string as set forth in claim 1 wherein: the steam inlet pipe is characterized in that the air inlet end of the steam inlet pipe (12) is communicated with a steam hot oil pipeline (13), the steam hot oil pipeline (13) penetrates through the oil tank (14) and then is communicated with the drainage main pipe (7), the air inlet end of the steam inlet pipe (12) is communicated with a condensed water drainage pipeline, and the condensed water drainage pipeline is communicated with the drainage main pipe (7).

7. A screw steam compressor string as set forth in claim 1 wherein: the crude oil filter (11) clamps and fixes the frame (21), left cavity (22) is seted up to the left cantilever of fixed frame (21), first chock plug (27) of slidable mounting in left cavity (22), it has first compression spring (25) to press from both sides between first chock plug (27) and left cavity (22) bottom, first pipe end (24) is installed in the left cantilever embedding of fixed frame (21), and first pipe end (24) pass left cavity (22) embedding first chock plug (27) intracavity, it has first embedding crown plate (26) to inlay left cavity (22) outer end, first chock plug (27) can slide in first embedding crown plate (26) inner ring, right cavity (31) has been seted up to the right cantilever of fixed frame (21), slidable mounting second chock plug (28) in right cavity (31), press from both sides between second chock plug (28) and right cavity (31) bottom and set second compression spring 29, the right cantilever embedding of fixed frame (21) installs the second end, and the second end passes right chamber (31) embedding second chock plug intracavity, right chamber (31) outer end is inlayed and is had second embedding crown plate (32), second chock plug (28) can slide at the inner ring of second embedding crown plate (32), first pipe end (24) and second pipe end (30) all weld supplementary locating plate (23).

8. A method of operating a screw steam compressor string as defined in any one of claims 1 to 7 including the steps of:

s1: steam enters the screw compressor (2) through the steam inlet pipe (12), condensed water is discharged due to temperature reduction of the pipeline in the period, and steam is shunted through the steam hot oil pipeline (13) to heat oil storage in the oil tank (14);

s2: the motor is started to drive the screw compressor (2) to work and pressurize the inflowing steam;

s3: the oil stored in the oil tank (14) flows out under the action of the oil pump (10), is subjected to primary filtration through the crude oil filter (11), and then is shunted to the temperature controller (8) and the oil cooling tank;

s4: the oil cooling box cools the inflowing hot oil, then the inflowing hot oil flows out to be mixed with the hot oil flowing through the temperature controller (8), and then the mixture enters the screw compressor (2) through the essential oil filter (16) to lubricate the screw compressor (2);

s5: at the moment, the water pump (6) works to enable cold water in the soft water tank (5) to enter the screw compressor (2) together with steam through a pipeline, and the screw compressor (2) is cooled;

s6: the screw compressor (2) pressurizes the steam, then the steam is guided into the gas-liquid separator (4) through the steam outlet pipe (15), and the high-pressure steam of the sweat is subjected to gas-liquid separation through the gas-liquid separator (4);

s7: the condensation discharge port of the screw compressor (2) is used for discharging excessive water, the oil outlet is used for guiding out the oil circulating in the compressor and flowing back to the oil tank (14), and the steps are repeated.