CN206159017U - Liquid ring vacuum pump return system with pressure boost cyclone film - Google Patents
Liquid ring vacuum pump return system with pressure boost cyclone film Download PDFInfo
- Publication number
- CN206159017U CN206159017U CN201621013620.XU CN201621013620U CN206159017U CN 206159017 U CN206159017 U CN 206159017U CN 201621013620 U CN201621013620 U CN 201621013620U CN 206159017 U CN206159017 U CN 206159017U
- Authority
- CN
- China
- Prior art keywords
- liquid
- water
- heat transfer
- heat exchange
- outlet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a liquid ring vacuum pump return system with pressure boost cyclone film relates to a liquid ring vacuum pump return system who is used for fields such as chemical industry, machinery, exploration, electric power. It includes vacuum pump body, deareator, advances the material pipe, goes out material pipe, booster pump, cyclone film district, coolant liquid entry, gas - water separation district, heat transfer district, rectification district, guide plate, gaseous phase passageway, annular diaphragm, install the skinning pipe in the cyclone film district, be equipped with the fenestra on the pipe wall of skinning pipe, heat transfer district internally mounted has the heat transfer baffle, and the import of heat transfer liquid communicates with the water inlet of lower heat exchange tube, the export of heat transfer liquid communicates with the delivery port of last heat exchange tube, the input of booster pump and separation liquid export intercommunication, the output of booster pump with return water mouth and coolant liquid entry intercommunication. The utility model discloses be favorable to reducing return water fluid perturbation, can low drag profile.
Description
Technical field
The utility model is related to a kind of liquid-ring vacuum pump return water system for fields such as chemical industry, machinery, exploration, electric power,
Specifically a kind of liquid-ring vacuum pump return water system with supercharging rotation film.
Background technology
Liquid-ring vacuum pump is mainly used in the forming process of black vacuum, because it has close isotherm compression, unwise to dust
Feel, suction gas can be with entrained liquids or the advantage of a large amount of vapor, it is widely used in power industry field, to condenser
Vacuumizing phase and vacuum maintenance stage are completed using vavuum pump and complete unit.Liquid-ring vacuum pump by slow-speed motor,
Moisture trap, working solution cooler, atmospheric control, high-low level control, pump group inside relevant connecting pipe, valve
And the composition such as electrical control equipment, its effect is that vacuum is set up when Steam Turbine starts and leakage at vacuum system imprecision is extracted
The air for entering and non-condensing steam, to maintain the vacuum of condenser.Liquid-ring vacuum pump is returned in pump chamber by biasing impeller
The dynamic vavuum pump for making swept volume of a single chamber cyclically-varying to realize being evacuated of transhipment.
Liquid rotary pump operationally, because hydraulic fluid temperature constantly rises, and constantly has water from exhaust in exhaust process
Mouth is lost in, discharge reduction in pump chamber, and causing the performance of liquid rotary pump reduces；And due to by work liquid temp and pressure for vaporization
Limit, its inside cavity is susceptible to cavitation.Cavitation not only can produce destruction to the flow passage components of liquid rotary pump, can also make liquid
Ring pump produces vibration and noise, and causes its efficiency to decline, therefore should try one's best prevents liquid rotary pump from working under cavitation state.Cause
This, needs constantly to supplement hydraulic fluid into pump chamber body during pendular ring pump operation, with maintenance work liquid measure and reduction work
Make the temperature of liquid.
The equipment such as liquid-ring vacuum pump or compressor operationally needs constantly to supplement cooling medium, i.e. working solution into pendular ring.
The working solution is substantially that the steam water interface that vavuum pump is discharged is separated and the cooling for reflux after heat exchanger via steam-water separator
Liquid, the flow of the part cooling work liquid, temperature and reflux type will directly influence the work temperature of vavuum pump pendular ring
Degree, so as to affect the operating efficiency and cavitation degree of risk of vavuum pump.
As shown in Fig. 2 in the return water system of existing vavuum pump, water return outlet is often designed near vavuum pump end cap one
Side, cooling work liquid is guided near vacuum pump impeller along the water return outlet through distribution plate, is entered into by original water return outlet
Inner barrel.Cooling work liquid initially enters the adjacent two interlobate volume list of impeller by original water return outlet when impeller rotates
Unit, after start mass transfer, heat transfer process into pendular ring with the effect of centrifugal force.
Above-mentioned existing liquid-ring vacuum pump return water system, it is advantageous that the centrifugal force that make use of impeller, and adjacent leaf
Vacuum between piece, so as to allow working solution from flowing into inside pendular ring under the conditions of unpressurized, simplifies system.However as in recent years
Carry out liquid-ring vacuum pump return water system to gradually step up the performance requirement of vavuum pump, above-mentioned existing liquid-ring vacuum pump return water system is
Related request cannot be met.For example when summer or long-term high temperature area are using vavuum pump, pendular ring temperature is too high will to be caused
A series of problems, such as causing the decline of the vacuum efficiency of pump, exhaust capacity decline, cavitation, such problem is to vavuum pump pendular ring temperature, cooling
The backwater amount of working solution, water temperature, return water mode, heat exchange efficiency are put forward higher requirement, above-mentioned existing liquid-ring vacuum pump
The drawbacks of return water mode of return water system, also manifests therewith.
As shown in Fig. 2 the return water mode of existing liquid-ring vacuum pump return water system its coolant (cryogenic liquid) be via
Original water return outlet is first into the interlobate elementary volume, volume element of two adjacent with impeller, subsequently enters under the influence of centrifugal force
Pendular ring inner side starts mass-and heat-transfer.And under the high speed rotation of impeller, coolant moves to steam vent by original water return outlet
The time of (draining) is very of short duration, and the heat exchange between liquid is only limitted to pendular ring inner side edge interlayer.I.e. coolant is stopped in pendular ring
Stay the time short, cryogenic liquid does not fully exchange heat and just discharge cylinder, high temperature of the pendular ring near barrel side by steam vent (draining)
Liquid does not obtain effective temperature-reducing or displacement.It is difficult to decline so as to result in pendular ring temperature；In addition, as shown in Fig. 2 often
Circumscribed plate type heat exchanger being selected the heat transmission equipment of rule return water system, such system layout is not compact, floor space is big, maintenance more
Inconvenience, heat exchange efficiency is not high, and so as to be easily caused, vavuum pump summer condition overtemperature, inefficiency, exhaust capacity decline, vapour
The problems such as erosion.
Utility model content
The purpose of this utility model is, in order to overcome the weak point of background technology, and to provide a kind of with supercharging rotation film
Liquid-ring vacuum pump return water system.
To achieve these goals, the technical solution of the utility model is：Liquid ring vacuum pump return water with supercharging rotation film
System, including vavuum pump body, moisture trap, enter materail tube and go out materail tube；The vavuum pump body upper end is provided with the pump housing
Material inlet and pump housing material outlet, vavuum pump body lower end is provided with water return outlet, and the moisture trap upper end is provided with separator
Material inlet and separated gas outlet, moisture trap lower end is provided with separation liquid outlet, heat exchange liquid import and heat exchange liquid outlet；
It is described enter materail tube be arranged on vavuum pump body and connect with pump housing material inlet, it is described go out materail tube one end installed in vacuum
Connect on pump body and with pump housing material outlet, the other end is arranged on moisture trap and with separator material inlet and connects；
It is characterized in that：Also include booster pump, the outer upper ends of the moisture trap are provided with Xuan Mo areas, set inside moisture trap
There are gas-water separation area, heat transfer zone and commutating zone, gas-water separation area and commutating zone are respectively positioned on moisture trap upper end, and heat transfer zone is located at
Moisture trap lower end；Coolant inlet is installed on the shell in the Xuan Mo areas, be provided with Xuan Mo areas with it is described go out material
The rotating-film tube of pipe connection, the tube wall of rotating-film tube is provided with the fenestra that water supply stream passes through, and the rotating-film tube connects with gas-water separation area
Logical, separated gas outlet is connected with commutating zone, is separated liquid outlet and is connected with heat transfer zone；The gas-water separation area and commutating zone it
Between deflector inside moisture trap is installed, deflector is provided with for separating the gas phase channel that gas passes through, described
Heat transfer zone upper end is provided with the toroidal membrane inside moisture trap, and gas-water separation area lower end and commutating zone lower end with
Heat transfer zone upper end connects, and the heat exchange dividing plate being connected with the inwall of moisture trap is provided with inside the heat transfer zone, and exchange heat dividing plate
The upper heat transfer zone positioned at heat exchange dividing plate upper end is divided into in the heat exchange, and positioned at the lower heat transfer zone of heat exchange dividing plate lower end, it is described
Some upper heat exchanger tubes are provided with upper heat transfer zone, some lower heat exchanger tubes are provided with lower heat transfer zone, the delivery port of the lower heat exchanger tube with
The water inlet connection of upper heat exchanger tube；Heat exchange liquid import is located at heat exchange dividing plate lower section, and connects with the water inlet of lower heat exchanger tube；
The heat exchange liquid outlet is located between heat exchange dividing plate and toroidal membrane, and is connected with the delivery port of upper heat exchanger tube；The booster pump
Input connect with the water return outlet and coolant inlet with liquid outlet, the output end of booster pump is separated.
In above-mentioned technical proposal, the skinning centerline hole rises in the horizontal direction with the intersection point of skinning pipe outer wall for outer
Film point of contact, tangent line of the outer skinning point of contact in skinning pipe outer wall is outer skinning tangent line, in the outer skinning tangent line and a fenestra
Angle between heart line is 15～60 °, and the angle risen between the center line and horizontal plane of fenestra is 5～20 °.
In above-mentioned technical proposal, the skinning centerline hole is in the horizontal direction interior with the intersection point of skinning inside pipe wall
Film point of contact, outer skinning point of contact is located at the angle between the center line of interior skinning point of contact top, the outer skinning tangent line and a fenestra
For 30 °, the angle risen between the center line and horizontal plane of fenestra is 10 °.
In above-mentioned technical proposal, the water return outlet center line in the horizontal direction with the contact position of vavuum pump body outer wall
For backwater point of contact, tangent line of the backwater point of contact on the outer wall of vavuum pump body is backwater tangent line, the backwater tangent line with return
The centerline parallel at the mouth of a river.
In above-mentioned technical proposal, described water return outlet has multiple and arranges in permutation on vavuum pump body, water return outlet
For cavernous structure or axial banded structure.
There is prior art to compare, the beneficial effects of the utility model are as follows：
1st, multiple water return outlets will be set on vavuum pump wall, and will be made between the barrel of water return outlet and vavuum pump body to cut
To setting, backwater flow disturbance is advantageously reduced, resistance can be reduced.
2nd, the working solution that when return water mode of the present utility model runs temperature can be made relatively low enters pendular ring from barrel, with liquid
Pendular ring inner side high-temp liquid is discharged into vavuum pump cylinder from exhaust outlet while ring exchanges heat, while heat exchange working solution is realized
Displacement to high-temp liquid.
3rd, separation liquid outlet, coolant inlet is connected with water return outlet by booster pump, can effectively supplement working solution
Amount, advantageously reduces pendular ring temperature.
4th, working solution is supplemented from suction side, can well impacts low-pressure vortex at this, working fluid pressure is improved, so as to significantly
Reduce cavitation risk, it is ensured that the Effec-tive Function of liquid-ring vacuum pump and the economy of Turbo-generator Set.
5th, the liquid after cooling is introduced into separator inlet using booster pump, precools the high-temp liquid into separator,
The temperature of the liquid of integrated heat exchanger can be lowered into, so as to reduce terminal temperature difference, heat exchange efficiency is improved.
6th, the set-up mode of fenestra is played in the utility model can make the liquid entered in rotating-film tube form rotation film, while logical
Crossing booster pump makes the cryogenic liquid from discharge channel out re-enter in skinning area, is conducive to improving gas-water separation effect
Rate, so as to ensure system stable operation, improves the economy of Turbo-generator Set.
Description of the drawings
Fig. 1 is the structural representation of liquid-ring vacuum pump return water system described in the utility model.
Fig. 2 is the structural representation of existing liquid-ring vacuum pump return water system.
Fig. 3 is the structural representation of moisture trap of the present utility model.
Fig. 4 is the attachment structure schematic diagram for materail tube and rotating-film tube.
When Fig. 5 is to prolong horizontal direction, the structural representation with the rotating-film tube for playing fenestra.
Fig. 6 is the attachment structure schematic diagram of impeller, distribution plate, pendular ring and water return outlet.
Fig. 7 is structural representation when water return outlet is cavernous structure in the utility model.
Fig. 8 is structural representation when water return outlet is axial banded structure in the utility model.
1- vavuum pumps body in figure, 11- pump housing material inlets, 12- pump housing material outlets, 13- water return outlets, 14- impellers,
15- distribution plates, 16- pendular rings, 2- moisture traps, 21- separator material inlets, 22- separated gas outlets, 23- separates liquid
Outlet, 24- heat exchange liquid imports, 25- heat exchange liquid outlets, 26- deflectors, 27- gas phase channels, 28- toroidal membranes, 29-, 3- enters thing
Expects pipe, 4- goes out materail tube, and 5- booster pumps, 6- Xuan Mo areas, 61- coolant inlets, 62- rotating-film tubes, 63- plays fenestra, 7- air waters point
From area, 8- heat transfer zones, 81- heat exchange dividing plates, the upper heat transfer zones of 82-, heat transfer zone under 83-, the upper heat exchanger tubes of 84-, heat exchanger tube under 85-, 9-
Commutating zone.
Specific embodiment
Describe performance of the present utility model in detail below in conjunction with the accompanying drawings, but they are not constituted to of the present utility model
Limit, it is only for example.Make advantage of the present utility model more clear and easy to understand by explanation simultaneously.
Understand refering to accompanying drawing：Liquid-ring vacuum pump return water system with supercharging rotation film, including vavuum pump body 1, air water point
From device 2, enter materail tube 3 and go out materail tube 4；The upper end of vavuum pump body 1 is provided with pump housing material inlet 11 and pump housing material goes out
Mouth 12, the lower end of vavuum pump body 1 is provided with water return outlet 13, and the upper end of the moisture trap 2 is provided with separator material inlet 21 and divides
From gas vent 22, the lower end of moisture trap 2 is provided with separation liquid outlet 23, heat exchange liquid import 24 and heat exchange liquid outlet 25；Institute
State and be arranged on vavuum pump body 1 into materail tube 3 and connect with pump housing material inlet 11, it is described go out the one end of materail tube 4 be arranged on
Connect on vavuum pump body 1 and with pump housing material outlet 12, the other end is arranged on moisture trap 2 and with separator material
Mouth 21 is connected；It is characterized in that：Also include booster pump 5, the outer upper ends of the moisture trap 2 are provided with Xuan Mo areas 6, air water
Gas-water separation area 7, heat transfer zone 8 and commutating zone 9 are provided with inside separator 2, gas-water separation area 7 and commutating zone 9 are respectively positioned on air water point
From the upper end of device 2, heat transfer zone 8 is located at the lower end of moisture trap 2；Coolant inlet 61 is installed on the shell in the Xuan Mo areas 6, is revolved
Be provided with film area 6 with it is described go out the rotating-film tube 62 that connect of materail tube 4, the tube wall of rotating-film tube 62 be provided with that water supply stream passes through
Fenestra 63, the rotating-film tube 62 is connected with gas-water separation area 7, and separated gas outlet 22 is connected with commutating zone 9, separates liquid outlet
Connect with heat transfer zone 8；The deflector being provided between the gas-water separation area 7 and commutating zone 9 inside moisture trap 2
26, deflector 26 is provided with for separating the gas phase channel 27 that gas passes through, and the upper end of the heat transfer zone 8 is provided with installed in gas-water separation
Toroidal membrane 28 inside device 2, and the lower end of gas-water separation area 7 and the lower end of commutating zone 9 connect with the upper end of heat transfer zone 8, it is described to change
The heat exchange dividing plate 81 being connected with the inwall of moisture trap 2 is installed, heat exchange dividing plate 81 is by 8 points of the heat transfer zone inside hot-zone 8
It is the upper heat transfer zone 82 positioned at heat exchange dividing plate 81 upper end, and positioned at the lower heat transfer zone 83 of heat exchange dividing plate 81 lower end, the upper heat exchange
It is provided with area 82 in some upper heat exchanger tubes 84, lower heat transfer zone 83 and is provided with some lower heat exchanger tubes 85, the water outlet of the lower heat exchanger tube 85
Mouth is connected with the water inlet of upper heat exchanger tube 84；The heat exchange liquid import 24 is located at the lower section of heat exchange dividing plate 81, and with lower heat exchanger tube 85
Water inlet connection；It is described heat exchange liquid outlet 25 be located at heat exchange dividing plate 81 and toroidal membrane 28 between, and with upper heat exchanger tube 84
Delivery port is connected；The input of the booster pump 5 is connected with liquid outlet 23 is separated, output end and the backwater of booster pump 5
Mouth 13 and coolant inlet 61 are connected.
Preferably, the described center line of fenestra 63 is cut in the horizontal direction with the intersection point of the outer wall of rotating-film tube 62 for outer skinning
Point, tangent line of the outer skinning point of contact on the outer wall of rotating-film tube 62 is outer skinning tangent line, in the outer skinning tangent line and a fenestra 63
Angle between heart line is 15～60 °, and the angle risen between the center line and horizontal plane of fenestra 63 is 5～20 °.
Preferably, the described center line of fenestra 63 is cut in the horizontal direction with the intersection point of the inwall of rotating-film tube 62 for interior skinning
Point, outer skinning point of contact is located above interior skinning point of contact, and the angle between the center line of the outer skinning tangent line and a fenestra 63 is
30 °, the angle risen between the center line and horizontal plane of fenestra 63 is 10 °.
Preferably, the center line of the water return outlet 13 is in the horizontal direction backwater with the contact position of the outer wall of vavuum pump body 1
Point of contact, tangent line of the backwater point of contact on the outer wall of vavuum pump body 1 is backwater tangent line, the backwater tangent line and water return outlet 13
Centerline parallel.
Preferably, described water return outlet 13 has multiple and arranges in permutation on vavuum pump body 1, and water return outlet 13 is poroid
Structure or axial banded structure.
Preferably, the cross section of the shell of the moisture trap 2 is ellipse, and the gas phase channel 27 is deflector 26
Multiple pod apertures of upper setting, the separation liquid outlet and heat exchange liquid import 24 are to be adjacently positioned.
Preferably, the coolant inlet 61 has two, and rotating-film tube 62 has two, and described two rotating-film tubes 62 are located at described
Between two coolant inlets 61.
The utility model comprises the technical steps that,
Step one：Working solution is passed in vavuum pump body 1, and working solution is made true with distribution plate 15 by impeller 14
Pendular ring 16 is formed in empty pump body 1；
Step 2：Pending high temperature air-water mixture is fed in vavuum pump body 1, pending High Temperature Gas are made
Aqueous mixtures are entered in pendular ring 16 through distribution plate 15 and contacted with pendular ring 16, pendular ring 16 and pending high temperature mixing wastewater with air
The material formed after thing mixing is the first air-water mixture；
Step 3：First air-water mixture is discharged by the steam vent on distribution plate 15, and enters into out materail tube 4, so
After extend materail tube 4 and be flowed in rotating-film tube 62；
Step 4：Coolant is injected into Xuan Mo areas 6 by coolant inlet 61, the coolant in Xuan Mo areas 6 is passed through
Fenestra 63 is entered in rotating-film tube 62 and mixed with the first air-water mixture, coolant and the mixed thing of the first air-water mixture
Matter is the second air-water mixture；
Step 5：Second air-water mixture is entered into inside moisture trap 2 through Xuan Mo areas 6, and in gas-water separation area 7
Gas-water separation is inside carried out, now the second air-water mixture is separated into separation gas and separates liquid；
Step 6：It is described to separate the gas phase channel 27 that gas is initially passed through between gas-water separation area 7 and commutating zone 9, so
After enter in commutating zone 9, finally inside commutating zone 9 after rectification, from the separated gas outlet 22 connected with commutating zone 9
Discharge；
Step 7：Separate liquid to enter in heat transfer zone 8 through gas-water separation area 7 and commutating zone 9, inside heat transfer zone 8
Heat exchanger tube contact, separate liquid in the heat transfer zone 8 after heat exchange, from the separation liquid outlet 23 positioned at the bottom of heat transfer zone 8
Discharge, now separate liquid and realize heat exchange function；
Step 8：The heat exchanging liquid part that booster pump 5 discharges separation liquid outlet 23 is by the note of coolant inlet 61
In Ru Daoxuanmo areas 6, another part is injected in vavuum pump body 1 by water return outlet 13, realizes separating the recycling of liquid；
Step 9：Heat exchanging liquid is first entered in heat transfer zone 8 from heat exchange liquid import 24, is then flowed into from lower heat exchanger tube 85
Upper heat exchanger tube 84, finally discharges from heat exchange liquid outlet 25, in the process, the heat exchanging liquid and upper heat exchanger tube in lower heat exchanger tube 85
Heat exchanging liquid in 84 can be contacted with liquid is separated in heat transfer zone 8, and heat exchanging liquid realizes heat exchange function.
During real work, as the pending high temperature air-water mixture described in step 2 is entered by pump housing material inlet
Enter vavuum pump sheet it is internal after, described high temperature air-water mixture through the air admission hole on distribution plate directly with step 2 in pendular ring
Contact, now pendular ring temperature gradually rises.
During real work, coolant is entered into after rotating-film tube in Xuan Mo areas can form rotation film, and rotation film can reduce gas flow temperature,
The separative efficiency that gas and separation liquid are separated in moisture trap can be improved.
During real work, from separate in liquid outlet many water return outlets of coolant Jing out directly with the lateral surface of pendular ring
Contact, is directly pressed into the high-temp liquid of the medial surface of pendular ring in pump housing material outlet；
The utility model eliminates external plate type heat exchanger, and is integrated with tube built-in heat exchanger in tank base, shape
Into a kind of built-in horizontal moisture trap of heat exchanger；Separate liquid outlet by increase pump connect with coolant inlet after,
Constantly can be entered in rotating-film tube by coolant inlet from the coolant separated in liquid outlet out, and then can be dropped
The low temperature for flowing into the liquid in gas-water separation area.Booster pump is connected in the afterbody of horizontal moisture trap, booster pump passes through
Some pipelines are connected with water return outlet, meanwhile, it is connected with coolant inlet by some pipelines again in addition on booster pump, so as to
Separative efficiency is improved, the terminal temperature difference at heat exchanger is reduced.
As shown in Figure 1, Figure 3：Return water mode described in the utility model is to have changed with the difference of conventional return water mode
The position of water return outlet and quantity, at the same time system be additionally arranged booster pump, cause when ambient temperature change or work needed for equipment
When condition changes, vacuum pump fluid backwater amount can accordingly be adjusted according to ruuning situation.In addition, make booster pump with
Cooling water inlet connects, and can reduce from vavuum pump body entering into the gas flow temperature of moisture trap, is conducive to improving gas
Water separative efficiency, and the mean temperature of heat transfer process in built-in heat exchanger is reduced, heat exchange efficiency is improved, increase the economy of system
Property.
With reference to shown in Fig. 3：The utility model employs the horizontal moisture trap of built-in heat exchanging type, advantageously reduces vavuum pump
The occupation of land space of return water system, makes the arrangement of vavuum pump return water system more flexible and convenient.
With reference to shown in Fig. 2：Conventional return water mode does not have barrel backwater structure and the regulation work(for different operating modes
Can, within the system vavuum pump cooling work liquid is fed water by original water return outlet, coolant (cryogenic liquid) be via
Original water return outlet initially enters the adjacent two interlobate elementary volume, volume element of impeller, subsequently enters under the influence of centrifugal force in pendular ring
Side starts mass-and heat-transfer.Under the high-speed rotation of impeller, coolant moves to steam vent (draining) heel row by original water return outlet
Go out vavuum pump sheet external.
The heat exchange that the heat transfer process of above-mentioned prior art is only limitted between liquid is only limitted to pendular ring inner side edge interlayer, and cools down
Liquid time of staying in pendular ring is short, exchanges heat insufficient, and cryogenic liquid does not fully exchange heat and just discharge vacuum by steam vent (draining)
Pump sheet is external, and high-temp liquid of the pendular ring near barrel side does not obtain effective temperature-reducing or displacement.So as to result in pendular ring temperature
Degree is difficult to decline, vavuum pump inefficiency, and exhaust capacity declines, the problems such as cavitation.
Below effective utilization-heat transfer unit method is calculated into respectively conventional return water mode and this programme direct replacement mode
Pendular ring temperature, supercharging backwater after heat exchange amount Q, heat exchange is drawn and is connected to after separator inlet in separator the temperature of steam flow and built-in
The mean temperature of heat exchanger heat transfer process.
Known pendular ring flow, backwater initial temperature and pendular ring initial temperature, and given five groups of different circling water flow rates, concrete initial value is such as
Shown in lower：
The initial calculation parameter of table 1
For convenience of calculating, the semi-circular heat-transfer surface that backwater is flow through launches and equivalency transform is flat board heat exchange, the specific heat of water
cp=4200J/ (kg DEG C).
For conventional water return method, flat board following current heat exchange mode, the heat exchange between backwater and working solution can be equivalent to
It is zero that face is considered as thermal resistance, i.e. backwater and working solution direct contact heat transfer.Can be obtained by Newtonian Cooling quantitative analysis, the calculating of heat exchange amount
Formula is as follows：
Q=qm1cp(t1″-t1')=qm2cp(t2′-t2") (formula 1)
Q=kA Δ tm(formula 2)
Nu=0.023Re0.8Prb(formula 4)
In formula, Q is heat exchange amount, qm1For circling water flow rate, qm2For pendular ring flow, CpFor specific heat capacity, t1". return after for heat exchange
The temperature of water, t2" temperature of pendular ring after for heat exchange, k is Composite Walls, Δ tm. for the mean temperature difference that exchanges heat, h is heat convection
Coefficient.For following current heat exchange, the calculating formula of efficiency is as follows：
, to formula 6, effectiveness-heat transfer unit method has obtained the heat exchange under different circling water flow rates for comprehensive known conditions and formula 1
Amount and outlet temperature, as shown in table 2.
The conventional return water mode result of calculation of table 2
For the heat exchange mode of this programme direct replacement, it replaces every time the pendular ring of 40 DEG C of equivalent with 15 DEG C of backwater,
With reference to primary condition and formula 1 to formula 6, heat exchange amount Q being finally calculated under different circling water flow rates and the outlet temperature such as institute of table 3
Show.
The direct replacement mode result of calculation of table 3
Return water mode of the present utility model is as shown in table 4 with conventional return water mode heat exchange amount comparing result, pendular ring temperature pair
It is more as shown in table 5 than result.
Table 4
Table 5
After direct replacement mixed heat transfer, in the steam flow temperature, separator from vacuum pump outlet discharge heat exchanger is entered
When backwater temperature difference and being drawn with booster pump when connecing that all the way cooling backwater is to separator supercharging cooling water inlet, enter in separator
Temperature of backwater temperature difference when entering heat exchanger under different circling water flow rates and the flow that draws water is as shown in table 6 and table 7.
Cooling water is accessed under the different flow of table 6 to backwater temperature difference in tank during separator inlet
Flux unit kg/s, temperature unit DEG C
Cooling water is not connect under the different flow of table 7 to backwater temperature difference in tank during separator inlet
Temperature difference when backwater enters heat exchanger in two kinds of return water mode separators contrasts as shown in table 8.
Table 8
Result of calculation shows that a kind of liquid ring vacuum pump fluid return water mode is in identical backwater stream disclosed in the utility model
The lower more conventional return water mode of its heat exchange amount of amount is bigger, and pendular ring mean temperature is lower, and separately connects returning after cooling all the way from booster pump
Water can precool separator inlet steam flow to separator inlet, improve gas-water separation efficiency, reduce returning into heat exchanger
The temperature difference of water and heat exchanger cooling water, no matter therefore the heat exchange efficiency of pendular ring working solution or the heat exchange efficiency of heat exchanger are more conventional
Return water mode is obviously improved.
Other unaccounted parts belong to prior art.
Claims (5)
1. with the liquid-ring vacuum pump return water system of supercharging rotation film, including vavuum pump body (1), moisture trap (2), material is entered
Manage (3) and go out materail tube (4)；
Vavuum pump body (1) upper end is provided with pump housing material inlet (11) and pump housing material outlet (12), vavuum pump body (1)
Lower end is provided with water return outlet (13), and moisture trap (2) upper end is provided with separator material inlet (21) and separated gas outlet
(22), moisture trap (2) lower end is provided with separation liquid outlet (23), heat exchange liquid import (24) and heat exchange liquid outlet (25)；
It is described enter materail tube (3) connect on vavuum pump body (1) and with pump housing material inlet (11), it is described go out materail tube
(4) one end is arranged on vavuum pump body (1) and with pump housing material outlet (12) and connects, and the other end is arranged on moisture trap
(2) connect on and with separator material inlet (21)；
It is characterized in that：
Also include booster pump (5), the outer upper ends of the moisture trap (2) are provided with Xuan Mo areas (6), moisture trap (2)
Inside is provided with gas-water separation area (7), heat transfer zone (8) and commutating zone (9), and gas-water separation area (7) and commutating zone (9) are respectively positioned on air water
Separator (2) upper end, heat transfer zone (8) are positioned at moisture trap (2) lower end；
Coolant inlet (61) is installed on the shell of the Xuan Mo areas (6), be provided with Xuan Mo areas (6) with it is described go out materail tube
(4) rotating-film tube (62) of connection, the tube wall of rotating-film tube (62) is provided with the fenestra (63) that water supply stream passes through, the rotating-film tube
(62) connect with gas-water separation area (7), separated gas outlet (22) is connected with commutating zone (9), separate liquid outlet and heat transfer zone
(8) connect；
It is provided between the gas-water separation area (7) and commutating zone (9) positioned at the internal deflector (26) of moisture trap (2),
Deflector (26) is provided with for separating the gas phase channel (27) that gas passes through, and heat transfer zone (8) upper end is provided with installed in air water
The internal toroidal membrane (28) of separator (2), and gas-water separation area (7) lower end and commutating zone (9) lower end with heat transfer zone (8) on
End connection,
The heat exchange dividing plate (81) being connected with the inwall of moisture trap (2) is installed, exchange heat dividing plate inside the heat transfer zone (8)
(81) heat transfer zone (8) are divided into into the upper heat transfer zone (82) positioned at heat exchange dividing plate (81) upper end, and positioned at heat exchange dividing plate (81)
It is provided with the lower heat transfer zone (83) of lower end, the upper heat transfer zone (82) in some upper heat exchanger tubes (84), lower heat transfer zone (83) and is provided with
Some lower heat exchanger tubes (85),
The delivery port of the lower heat exchanger tube (85) is connected with the water inlet of upper heat exchanger tube (84)；Heat exchange liquid import (24) is located at
Heat exchange dividing plate (81) lower section, and connect with the water inlet of lower heat exchanger tube (85)；Heat exchange liquid outlet (25) is positioned at heat exchange dividing plate
(81) and toroidal membrane (28) between, and connect with the delivery port of upper heat exchanger tube (84)；
The input of the booster pump (5) is connected with liquid outlet (23) is separated, output end and the water return outlet of booster pump (5)
(13) and coolant inlet (61) connection.
2. according to claim 1 with the liquid-ring vacuum pump return water system for being pressurized rotation film, it is characterised in that：The skinning
Hole (63) center line is in the horizontal direction outer skinning point of contact with the intersection point of rotating-film tube (62) outer wall, and outer skinning point of contact is in rotating-film tube
(62) tangent line on outer wall is outer skinning tangent line, and the angle between the outer skinning tangent line and the center line of fenestra (63) is 15
～60 °, the angle risen between the center line and horizontal plane of fenestra (63) is 5～20 °.
3. according to claim 2 with the liquid-ring vacuum pump return water system for being pressurized rotation film, it is characterised in that：The skinning
Hole (63) center line is in the horizontal direction interior skinning point of contact with the intersection point of rotating-film tube (62) inwall, and outer skinning point of contact is located at interior
Angle between the center line of film point of contact top, the outer skinning tangent line and a fenestra (63) is 30 °, plays the center of fenestra (63)
Angle between line and horizontal plane is 10 °.
4. according to any one of claims 1 to 3 claim with supercharging rotation film liquid-ring vacuum pump return water system,
It is characterized in that：Water return outlet (13) center line is in the horizontal direction backwater with the contact position of vavuum pump body (1) outer wall
Point of contact, tangent line of the backwater point of contact on the outer wall of vavuum pump body (1) is backwater tangent line, the backwater tangent line and water return outlet
(13) centerline parallel.
5. according to claim 4 with the liquid-ring vacuum pump return water system for being pressurized rotation film, it is characterised in that：Described returns
The mouth of a river (13) has multiple and arranges in permutation on vavuum pump body (1), and water return outlet (13) is cavernous structure or axial banding knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013620.XU CN206159017U (en) | 2016-08-31 | 2016-08-31 | Liquid ring vacuum pump return system with pressure boost cyclone film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013620.XU CN206159017U (en) | 2016-08-31 | 2016-08-31 | Liquid ring vacuum pump return system with pressure boost cyclone film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206159017U true CN206159017U (en) | 2017-05-10 |
Family
ID=58649417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013620.XU Withdrawn - After Issue CN206159017U (en) | 2016-08-31 | 2016-08-31 | Liquid ring vacuum pump return system with pressure boost cyclone film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206159017U (en) |
-
2016
- 2016-08-31 CN CN201621013620.XU patent/CN206159017U/en not_active Withdrawn - After Issue
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106523366B (en) | Boosting type liquid-ring vacuum pump return water system and its water return method with rotation film | |
| CN105782058B (en) | A kind of liquid-ring vacuum pump return water system and water return method | |
| CN206280252U (en) | The adjustable two-stage energy-saving air compressor of pressure ratio | |
| CN106523365B (en) | The horizontal moisture trap of liquid film coagulation and its gas-water separation method | |
| CN106039916A (en) | System of lowering content of waste gas in solution polymerization rubber process | |
| CN206071872U (en) | The horizontal moisture trap of liquid film coagulation | |
| CN214763386U (en) | Vacuum rectification device is used in peppermint oil processing | |
| CN204767789U (en) | Vacuum centrifugation oil filter | |
| CN201193610Y (en) | Closed circulation roots pump and water-ring pump vacuum unit | |
| CN104069652A (en) | Low-volatile liquid vacuum dehydrating method and device | |
| CN206159017U (en) | Liquid ring vacuum pump return system with pressure boost cyclone film | |
| CN2530042Y (en) | Direct air cooling turbine steam exhauster for power station | |
| CN207568850U (en) | A kind of water-saving structure of water ring vacuum pump | |
| CN205714783U (en) | A kind of liquid-ring vacuum pump return water system | |
| CN2779073Y (en) | Multifunctional air discharging device of direct air cooling steam turbine | |
| CN106958987A (en) | A kind of air pre-dehumidified separated for air and chilldown system | |
| CN203978955U (en) | A kind of full automatic high efficiency miniature power energy-conserving and environment-protective vacuum system | |
| CN205886510U (en) | System for non -methane total hydrocarbon waste gas content in reduction solution polymerization rubber technology | |
| CN206285534U (en) | The heat-exchange system of vacuum oil-filter | |
| CN113432448B (en) | Zero-energy-consumption device for directly mixing and reducing temperature of gas-steam mixture | |
| CN210033829U (en) | Electric efficient energy-saving oil ring type vacuum pump unit | |
| CN87210486U (en) | Vaccum dewater and gas removing device | |
| CN207493455U (en) | A kind of vehicular glycol dehydration device and absorption system | |
| CN205592140U (en) | Dual cycle tangential exhaust liquid ring vacuum pump end cover | |
| CN207196985U (en) | A kind of circulating cooling-water machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170510 Effective date of abandoning: 20181016 |
|
| AV01 | Patent right actively abandoned |