CN105903219A - MVR system for sealing and separating compressor by using viscous fluid - Google Patents

MVR system for sealing and separating compressor by using viscous fluid Download PDF

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Publication number
CN105903219A
CN105903219A CN201610347162.1A CN201610347162A CN105903219A CN 105903219 A CN105903219 A CN 105903219A CN 201610347162 A CN201610347162 A CN 201610347162A CN 105903219 A CN105903219 A CN 105903219A
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CN
China
Prior art keywords
outlet
compressor
viscous fluid
pump
mvr
Prior art date
Application number
CN201610347162.1A
Other languages
Chinese (zh)
Inventor
杨鲁伟
何媚质
张振涛
蔺雪军
张化福
芦琳
刘军
Original Assignee
中国科学院理化技术研究所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中国科学院理化技术研究所 filed Critical 中国科学院理化技术研究所
Priority to CN201610347162.1A priority Critical patent/CN105903219A/en
Publication of CN105903219A publication Critical patent/CN105903219A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02Liquid sealing for high-vacuum pumps or for compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04Heating; Cooling; Heat insulation
    • F04C29/042Heating; Cooling; Heat insulation by injecting a fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/08Sealings
    • F04D29/083Sealings especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/582Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5846Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection

Abstract

The invention discloses an MVR system for sealing and separating a compressor by using a viscous fluid. An upper outlet of an evaporator is in communication connection with an inlet of a main vapor-liquid separator via a pipe. An upper outlet of the main vapor-liquid separator is in communication connection with an inlet of a water vapor compressor via a pipe. An outlet of the water vapor compressor is in communication connection with an inlet of an auxiliary vapor-liquid separator via a pipe. An upper outlet of the auxiliary vapor-liquid separator is in communication connection with an upper inlet of the evaporator via a pipe, while a lower outlet of the auxiliary vapor-liquid separator is in communication connection with an inlet of a viscous fluid storage tank via a pipe. An outlet of the viscous fluid storage tank is in communication connection with the water vapor compressor via a pipe. A viscous fluid having a high viscosity and a high coefficient of heat conductivity is used for performing cooled and sealed water injection to the water vapor compressor. The viscous fluid having a high coefficient of heat conductivity is capable of enhancing the leakproofness of the water steam compressor, reducing or preventing gas leakage to the outside, improving the efficiency of the compressor and reducing the consumption of energy on the premise of guaranteeing elimination of the superheat of the water vapor compressor.

Description

A kind of use the viscous fluid MVR system to compressor seal and separation

Technical field

The present invention relates to MVR system compressors technical field of sealing technology, be specifically related to a kind of employing viscous fluid pair The MVR system of compressor seal and separation.

Background technology

Due in compressor pressure more than shell external pressure, axle head particularly with prime mover linkage section, axle is with fixing Between parts, the gas in gap is to outward leakage, causes compressor efficiency to reduce.The work of compressor seal system With these leakages reducing or preventing gas exactly, it is ensured that the high-quality and efficient operating of compressor, reduce material, energy The consumption in source, prevents the pollution of the environment and ensures the person and equipment safety.

In MVR system, compressor takes coolant seal to spray water, and both can eliminate the degree of superheat, it is ensured that compression The safe operation of machine, it is also possible to play sealing function, it is ensured that compressor efficiency, water spray typically uses condensed water Condensed water in case.But in actual applications, due to the restriction of water viscosity, sealing effectiveness tends not to reach Expection, the leakage of portion gas reduces compressor efficiency.

Use the viscous fluid MVR system to compressor seal and separation accordingly, it is desirable to provide a kind of, protecting On the premise of card MVR system is properly functioning, water injector and change water spray working medium by transformation compressor drop The consumption of the low energy, thus improve compressor efficiency.

Summary of the invention

The technical problem to be solved in the present invention is to provide and a kind of uses viscous fluid to compressor seal and separation MVR system, uses the viscous fluid that viscosity is big, heat conductivity is high to carry out water vapour compressor sealing water spray, And realize recycling of viscous fluid working medium, strengthen the sealing of water vapour compressor, it is ensured that compressor is excellent Matter high-efficiency operation, improves compressor volumetric efficiency.

For solving above-mentioned technical problem, the present invention uses following technical proposals:

A kind of use the viscous fluid MVR system to compressor seal and separation, including vaporizer, main vapour-liquid Separator, water vapour compressor, auxiliary vapour liquid separator and viscous fluid storagetank, described vaporizer goes out Mouth is connected by pipeline connection with the entrance of main vapour liquid separator, the upper outlet of described main vapour liquid separator and water The entrance of vapour compression machine is connected by pipeline connection, the outlet of described water vapour compressor and auxiliary vapor-liquid separation The entrance of device is connected by pipeline connection, and the upper outlet of described auxiliary vapour liquid separator leads to the upper inlet of vaporizer Crossing pipeline connection to connect, the lower outlet of described auxiliary vapour liquid separator and the entrance of viscous fluid storagetank are by pipe Road connection connects, and the outlet of described viscous fluid storagetank is connected by pipeline connection with water vapour compressor.

Preferably, the pipeline between described viscous fluid storagetank and water vapour compressor is provided with water jet pump. Viscous fluid in viscous fluid storagetank is injected into water vapour compressor by water jet pump, to water vapour compressor Carry out coolant seal.

Preferably, described MVR system also includes feed pipe, system feeding pump, heat exchanger and evaporative recirculation pump, Described feed pipe is connected with the entrance of system feeding pump, described system feeding delivery side of pump and vaporization cycle The entrance of pump is connected by pipeline connection, and the pipeline between described system feeding pump and evaporative recirculation pump is arranged Heat exchanger, the pipeline between described heat exchanger and evaporative recirculation pump is provided with charging choke valve, and described evaporation follows Ring delivery side of pump is connected by pipeline connection with the lower inlet of vaporizer, described evaporative recirculation pump and vaporizer it Between pipeline be provided with evaporation feed liquor choke valve.

Preferably, the lower outlet of described main vapour liquid separator is connected by pipeline connection with the entrance of evaporative recirculation pump Connect.The feed pipe that the liquid that the lower outlet of main vapour liquid separator is separated is come in together with system feeding pump former Material together, enters evaporator evaporation by evaporative recirculation pump.

Preferably, described MVR system also includes condensation water tank, condensate pump and condensate drain outlet, described The lower outlet of vaporizer is connected by pipeline connection with the entrance of condensation water tank, the outlet of described condensation water tank with The entrance of condensate pump is connected by pipeline connection, and described condensed water delivery side of pump passes through with condensate drain outlet Pipeline connection connects, and the pipeline between described condensate pump and condensate drain outlet enters through heat exchanger with system Pipeline between material pump and evaporative recirculation pump realizes heat exchange.Pipeline between condensate pump and condensate drain outlet Temperature so that pipeline between system feeding pump and evaporative recirculation pump heats up, by come in feed pipe Raw material enters back into evaporator evaporation after preheating.

Preferably, described MVR system also includes system discharge pump, the product discharge gate of described vaporizer be System discharge pump is connected by pipeline connection, and the pipeline between described product discharge gate and system discharge pump is provided with Discharge choke valve.Discharge choke valve can control the discharge situation of product discharge gate.

Preferably, described water vapour compressor is roots blower or centrifugal compressor.

Preferably, described heat exchanger is plate type heat exchanger.Plate type heat exchanger is capable of preferably heat exchange.

Beneficial effects of the present invention is as follows:

A kind of viscous fluid MVR system to compressor seal and separation that uses of the present invention, use viscosity big, The viscous fluid that heat conductivity is high carries out coolant seal water spray to water vapour compressor, the viscosity of high thermal conductivity coefficient Fluid, on the premise of ensureing to eliminate the water vapour compressor degree of superheat, strengthens the sealing of water vapour compressor, Reduce or prevent gas from outwardly leaking, improving compressor efficiency, reducing the consumption of the energy.Vapour-liquid is mixed Thing carries out secondary vapor-liquid separation, gas inclusions liquid both can have been avoided systematic influence, it is ensured that the purity of gas, Also can realize recycling of the viscous fluid that viscosity is big, heat conductivity is high, save the consumption of working medium.

Accompanying drawing explanation

Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.

Fig. 1 illustrates that a kind of of the present invention uses the viscous fluid knot to the MVR system of compressor seal and separation Structure schematic diagram.

1 vaporizer, 2 main vapour liquid separators, 3 water vapour compressors, 4 auxiliary vapour liquid separators, 5 viscous fluids Storagetank, 6 condensation water tanks, 7 product discharge gates, 8 heat exchangers, 9 condensate drain outlets, 10 feed pipes, 11 system feeding choke valves, 12 evaporation feed liquor choke valves, 13 discharge choke valves, 14 evaporative recirculation pumps, 15 system feeding pumps, 16 condensate pumps, 17 system discharge pumps, 18 water jet pumps.

Detailed description of the invention

In order to be illustrated more clearly that the present invention, below in conjunction with preferred embodiments and drawings, the present invention is done further Explanation.Parts similar in accompanying drawing are indicated with identical reference.Those skilled in the art should Understand, below specifically described content be illustrative and be not restrictive, the present invention should not limited with this Protection domain.

The viscous fluid MVR system to compressor seal and separation is used, including steaming as it is shown in figure 1, a kind of Send out device 1, main vapour liquid separator 2, water vapour compressor 3, auxiliary vapour liquid separator 4 and viscous fluid storagetank 5, the upper outlet of described vaporizer 1 is connected by pipeline connection with the entrance of main vapour liquid separator 2, described master The upper outlet of vapour liquid separator 2 is connected by pipeline connection with the entrance of water vapour compressor 3, and described water steams Vapour compressor 3 is roots blower or centrifugal compressor, and the outlet of described water vapour compressor 3 divides with auxiliary vapour-liquid Entrance from device 4 is connected by pipeline connection, the upper outlet of described auxiliary vapour liquid separator 4 and vaporizer 1 Upper inlet is connected by pipeline connection, the lower outlet of described auxiliary vapour liquid separator 4 and viscous fluid storagetank 5 Entrance connected by pipeline connection, the outlet of described viscous fluid storagetank 5 and water vapour compressor 3 leads to Cross pipeline connection to connect.Pipeline between described viscous fluid storagetank 5 and water vapour compressor 3 is provided with Water jet pump 18.

Described MVR system also includes feed pipe 10, system feeding pump 15, heat exchanger 8 and evaporative recirculation pump 14, Described feed pipe 10 is connected with the entrance of system feeding pump 15, the outlet of described system feeding pump 15 with The entrance of evaporative recirculation pump 14 is connected by pipeline connection, described system feeding pump 15 and evaporative recirculation pump 14 Between pipeline on heat exchanger 8 is set, described heat exchanger 8 is plate type heat exchanger.Described heat exchanger 8 and steaming Send out the pipeline between circulating pump 14 and be provided with charging choke valve 11, the outlet of described evaporative recirculation pump 14 and steaming The lower inlet sending out device 1 is connected by pipeline connection, the pipeline between described evaporative recirculation pump 14 and vaporizer 1 It is provided with evaporation feed liquor choke valve 12.

The lower outlet of described main vapour liquid separator 2 is connected by pipeline connection with the entrance of evaporative recirculation pump 14.

Described MVR system also includes condensation water tank 6, condensate pump 16 and condensate drain outlet 9, described steaming The lower outlet sending out device 1 is connected by pipeline connection with the entrance of condensation water tank 6, going out of described condensation water tank 6 Mouth is connected by pipeline connection with the entrance of condensate pump 16, the outlet of described condensate pump 16 and condensed water Floss hole 9 is connected by pipeline connection, and the pipeline between described condensate pump 16 and condensate drain outlet 9 is worn The pipeline crossed between heat exchanger 8 and system feeding pump 15 and evaporative recirculation pump 14 realizes heat exchange.

Described MVR system also includes system discharge pump 17, the product discharge gate 7 of described vaporizer 1 and system Discharge pump 17 is connected by pipeline connection, the pipeline between described product discharge gate 7 and system discharge pump 17 It is provided with discharge choke valve 13.

Operation principle and work process:

Material liquid is entered, by plate type heat exchanger 8 and condensation water tank 6 from feed pipe 10, system feeding pump 15 Condensed water carry out heat exchange, material liquid after heat exchange enters after in vaporizer 1, evaporation becomes liquid-vapor mixture, Entering main vapour liquid separator 2 and carry out vapor-liquid separation, the indirect steam separated enters water vapour compressor 3 Middle being compressed, water vapour compressor 3 is sprayed viscous fluid and cools down close by viscous fluid storagetank 5 simultaneously Envelope, is entered after auxiliary vapour liquid separator 4 carries out vapor-liquid separation by compressed gas, enters vaporizer 1 as thermal source Heating feed liquid, the auxiliary isolated liquid of vapour liquid separator 4 reenters viscous fluid storagetank 5, evaporation and concentration Material is discharged through system discharge pump 17 by the product discharge gate 7 of vaporizer 1.

Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and also Non-is the restriction to embodiments of the present invention, for those of ordinary skill in the field, above-mentioned Can also make other changes in different forms on the basis of explanation, here cannot be to all of enforcement Mode gives exhaustive, every belongs to the obvious change or variation that technical scheme extended out Row still in protection scope of the present invention.

Claims (8)

1. one kind uses the viscous fluid MVR system to compressor seal and separation, it is characterised in that: bag Include vaporizer (1), main vapour liquid separator (2), water vapour compressor (3), auxiliary vapour liquid separator (4) With viscous fluid storagetank (5), the upper outlet of described vaporizer (1) enters with main vapour liquid separator (2) Mouth is connected by pipeline connection, the upper outlet of described main vapour liquid separator (2) and water vapour compressor (3) Entrance connected by pipeline connection, the outlet of described water vapour compressor (3) and auxiliary vapour liquid separator (4) Entrance connected by pipeline connection, the upper outlet of described auxiliary vapour liquid separator (4) and vaporizer (1) Upper inlet is connected by pipeline connection, and the lower outlet of described auxiliary vapour liquid separator (4) is stored with viscous fluid The entrance of groove (5) is connected by pipeline connection, the outlet of described viscous fluid storagetank (5) and water vapour Compressor (3) is connected by pipeline connection.
The most according to claim 1 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: the pipe between described viscous fluid storagetank (5) and water vapour compressor (3) Road is provided with water jet pump (18).
The most according to claim 1 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: described MVR system also include feed pipe (10), system feeding pump (15), Heat exchanger (8) and evaporative recirculation pump (14), described feed pipe (10) and system feeding pump (15) Entrance connection connects, and the outlet of described system feeding pump (15) is passed through with the entrance of evaporative recirculation pump (14) Pipeline connection connects, and the pipeline between described system feeding pump (15) and evaporative recirculation pump (14) is arranged Heat exchanger (8), the pipeline between described heat exchanger (8) and evaporative recirculation pump (14) is provided with charging joint The lower inlet of stream valve (11), the outlet of described evaporative recirculation pump (14) and vaporizer (1) passes through pipeline Connection connects, and the pipeline between described evaporative recirculation pump (14) and vaporizer (1) is provided with vaporizer and enters Material choke valve (12).
The most according to claim 3 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: the lower outlet of described main vapour liquid separator (2) and evaporative recirculation pump (14) Entrance is connected by pipeline connection.
The most according to claim 4 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: described MVR system also include condensation water tank (6), condensate pump (16) and Condensate drain outlet (9), the entrance of the lower outlet of described vaporizer (1) and condensation water tank (6) passes through Pipeline connection connects, and the entrance of the outlet of described condensation water tank (6) and condensate pump (16) passes through pipeline Connection connects, and the outlet of described condensate pump (16) is with condensate drain outlet (9) by pipeline connection even Connect, the pipeline between described condensate pump (16) and condensate drain outlet (9) through heat exchanger (8) with Pipeline between system feeding pump (15) and evaporative recirculation pump (14) realizes heat exchange.
The most according to claim 5 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: described MVR system also includes system discharge pump (17), described vaporizer (1) Product discharge gate (7) be connected by pipeline connection with system discharge pump (17), described product discharge gate (7) pipeline and between system discharge pump (17) is provided with discharge choke valve (13).
The most according to claim 1 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: described water vapour compressor (3) is roots blower or centrifugal compressor.
The most according to claim 3 a kind of use viscous fluid to compressor seal and the MVR of separation System, it is characterised in that: described heat exchanger (8) is plate type heat exchanger.
CN201610347162.1A 2016-05-24 2016-05-24 MVR system for sealing and separating compressor by using viscous fluid CN105903219A (en)

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CN201610347162.1A CN105903219A (en) 2016-05-24 2016-05-24 MVR system for sealing and separating compressor by using viscous fluid

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548919A1 (en) * 1983-07-13 1985-01-18 Laguilharre Sa Process for concentrating a liquid product with the use, in the concentration process, of heat energy removed from a heat-transfer liquid at low thermal level
CN103203116A (en) * 2013-04-24 2013-07-17 江苏科化节能环保设备有限公司 MVR (Mechanical Vapor Recompression) continuous evaporative crystallization system and continuous evaporative crystallization method
CN104707349A (en) * 2015-02-05 2015-06-17 中国科学院理化技术研究所 Plate evaporator type MVC heat pump evaporation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548919A1 (en) * 1983-07-13 1985-01-18 Laguilharre Sa Process for concentrating a liquid product with the use, in the concentration process, of heat energy removed from a heat-transfer liquid at low thermal level
CN103203116A (en) * 2013-04-24 2013-07-17 江苏科化节能环保设备有限公司 MVR (Mechanical Vapor Recompression) continuous evaporative crystallization system and continuous evaporative crystallization method
CN104707349A (en) * 2015-02-05 2015-06-17 中国科学院理化技术研究所 Plate evaporator type MVC heat pump evaporation system

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Title
化学工业部人事教育司,化学工业部教育培训中心: "《机械传动与零件》", 31 January 1997 *
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Application publication date: 20160831