CN108138784A - Band is useful for the pumping system of the barrier fluid delivery circuit of dry gas seals part - Google Patents
Band is useful for the pumping system of the barrier fluid delivery circuit of dry gas seals part Download PDFInfo
- Publication number
- CN108138784A CN108138784A CN201680045642.0A CN201680045642A CN108138784A CN 108138784 A CN108138784 A CN 108138784A CN 201680045642 A CN201680045642 A CN 201680045642A CN 108138784 A CN108138784 A CN 108138784A
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- Prior art keywords
- pump
- shared
- pumping system
- barrier fluid
- fluid
- Prior art date
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- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 98
- 230000004888 barrier function Effects 0.000 title claims abstract description 67
- 238000005086 pumping Methods 0.000 title claims abstract description 36
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 43
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 61
- 230000008569 process Effects 0.000 description 21
- 229960004424 carbon dioxide Drugs 0.000 description 20
- 238000010276 construction Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
- F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/001—Pumps adapted for conveying materials or for handling specific elastic fluids
- F04D23/003—Pumps adapted for conveying materials or for handling specific elastic fluids of radial-flow type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
Abstract
One kind is used for carbon dioxide（CO2）The pumping system of application（200）Including multiple centrifugal pumps（300,400）, each centrifugal pump is equipped with one or more dry gas seals parts and one or more barrier fluid delivery circuits（301,401）, it is used for pump in operating conditions（300,400）Pump discharge（330,430）It is fluidly connected at least one dry gas seals part of another pump under waiting condition.The pump of pumping system can be switched by control unit between service condition and waiting condition.
Description
Description
This disclosure relates to particularly but not only for pumping carbon dioxide（CO2）Fluid pumping system, including multiple
It pumps and for protecting the pump during waiting condition（Preferably centrifugal pump）Dry gas seals part integrality dry gas it is close
Sealing protective device.
More specifically, this disclosure relates to pumping system, for CO2Using（Such as re-injection, fortune in oil-gas recovery device
The defeated and pure CO of isolation2And CO2+ hydrocarbon）The complete of the dry gas seals part of centrifugal pump is protected in permission during the waiting condition of the pump
Property.
Dry gas seals part is provided to several benefits applied to centrifugal pump, instead of liquid seal for sealing for example, reducing work(
Rate consumption reduces sealing system footprint, increases reliability and eliminate and the relevant maintenance cost of barrier fluid refill.
Under the service condition of centrifugal pump, many benefits of dry gas seals part conceal and under other operating conditions（Example
In waiting condition）Using the associated problem of dry gas seals part on centrifugal pump, this hereinafter will clearly be explained.
Across the gas of primary seal（And particularly CO2）Leakage is normal, because also under waiting condition, pumps and is added
It presses and prepares to start.
Therefore, the gas pressure in pump is higher than external atmospheric pressure.The downstream of primary seal exists by buffer fluid（Allusion quotation
Type is available nitrogen or air under four to six bars of pressure）The pressure of formation.In addition, elevated pressures and untreated process
Gas permeates trunk seal, conveys particle and liquid pollutant.
This problem is in carbon dioxide（CO2）As process streams and/or since the fluid expansion by sealing element is and changeable
Phase（Ice or liquid）Any other fluid in the case of aggravate.Pass through the carbon dioxide of the close tolerance of seal ring of dry gas
（CO2）Expansion can form ice on sealing ring.Then, when pump is back to normal operating condition, the dirt between seal ring of dry gas
Dye leads to the premature abrasion and failure of dry gas seals part.
Referring to figs. 1 to Fig. 3, the known construction for the single centrifugal pump for including the use of dry gas seals part is shown.
Fig. 1 is disclosed for carbon dioxide（CO2）The dry gas seals of pump（DGS）The relevant technologies of system 100 construct detailed
Figure.It should be noted that in such configuration, any fluid in a supercritical state can replace exemplary carbon dioxide
（CO2）As barrier fluid.
The construction of Fig. 1 reflects the performance of the dry gas seals part during operating condition, and treats including its relevant range close
The CO2 pumps 102 of envelope, the master of dry gas seals part（Inside）The secondary sealing part of sealing element 104, dry gas seals part（Outside）106th, process
Fluid filter 108, process fluid heater 110, for control to outburst-safety zone stream valve and control element 120,
Intermediate buffering pneumatic filter 114, intermediate buffering gas 116, barrier fluid 118, pressure reducing valve 120,122 and of trunk hermetic seal room
Secondary dry gas seals room 124.
The process fluid from pump discharge is shown in the relevant technologies construction of Fig. 1（Such as carbon dioxide）It is used as
Barrier fluid.The pressure of barrier fluid is reduced by valve 120 and is heated by heater 110.Then barrier fluid is by filter
108 filter and are injected into trunk hermetic seal room 122.
The pressure of barrier fluid is higher than the suction pressure pumped, and therefore it prevents any untreated process gas from entering master
Sealing element 104.
Barrier fluid（Carbon dioxide）It is flowed into pump by internal maze portion, and passes through trunk seal part
Ground flow to main blow vent.Next, in the relevant technologies construction, the carbon dioxide of pump is flowed into（CO2）Reach and compare carbon dioxide
（CO2）The high suction pressure of critical pressure, and the problem of therefore will not freeze.In addition in the construction of consideration, pass through
Primary seal flows to the carbon dioxide of main blow vent（CO2）The value formed by buffer gas is expanded into from P1（Typically 4 to 6
N2/ air under bar）.It should be noted that in known construction, carbon dioxide（CO2）The temperature of barrier fluid must be by
Heater is maintained to sufficiently high value to avoid the risk to freeze during expansion.
Intermediate buffering gas 116（Such as nitrogen or dry air）It is filtered by filter 114 and is injected into secondary dry gas seals room
In 124.It should be noted that in known construction, denitrogenate or air other than other gases also be used as buffer gas.Centre is slow
The pressure of qi of chong channel ascending adversely body 116 is higher than the pressure of the barrier gas by primary seal 104, and prevents barrier gas from reaching secondary sealing part
106。
In known construction, the mixing of barrier gas 118 and intermediate buffering gas 116 in secondary dry gas seals room 124
Object is by valve 112 and flows to outburst-safety zone.
Fig. 2 shows identical with Fig. 1 figures when pump is in waiting condition.Under these conditions, the outlet pressure from pump
Power is equal to the pressure in region 102 to be sealed.When pump is in waiting condition, the pressure into pump reaches very close suction pressure
Consistent value.
It should be noted that the relevant technologies construction in, waiting condition as a result, the process fluid from pump discharge
Barrier fluid can not be served as again, to prevent untreated process fluid from flowing into primary seal 104 from region 102 to be sealed.In addition,
Untreated process fluid is not heated or is filtered, and therefore pollutant can enter primary seal 104, and can be in primary seal
It freezes in 104.
Due to pump also pressurize under waiting condition, so when pump in waiting condition when in the presence of the nature across primary seal
Carbon dioxide（CO2）Leakage.
According to the prior art, with reference to Fig. 3, in order to avoid the risk damaged and frozen when pump is in waiting condition, for
Barrier fluid 118 is equipped with additional booster（It is being not shown in figure）To be set during barrier gas to be maintained to the service condition of pump
Under conditions of putting.The solution needs about filtering and heats the similar process to process fluid, to prevent pollution dry gas close
Sealing.
Summary
Here consider for carbon dioxide（CO2）The equipment of application, such as re-injection, transport and isolation are pure in oil-gas recovery device
Carbon dioxide and carbon dioxide+hydrocarbon.
In the apparatus, at least one centrifugal pump is provided, it is preferable to provide at least two centrifugal pumps worked alternatively, with
When the first pump of box lunch is in operation/service condition, the second pump is in waiting condition.
Switching allows to reduce maintenance cost caused by due to replacing barrier fluid, and increase MTBF between pump（Failure it
Between average time）.
With more centrifugal pumps, then each pump can work the less time, so as to extend a failure and another it
Between expeced time（MTBF）.
In addition, avoiding equipment downtime using more centrifugal pumps, when that must be safeguarded to the first pump execution, can operate
Second pump.
The purpose of the disclosure is to provide one kind and is adapted for carrying out（Especially）The pumping system of advantages listed above.
Further details and specific embodiment with reference to the accompanying drawings, wherein：
- Fig. 1 be when pump in operation/service condition when dry gas seals part and associated gas support system schematic diagram；
- Fig. 2 is when pump is in dangerous waiting condition（There is the risk of damage and icing）When dry gas seals part and associated gas
Body supports the schematic diagram of system；
- Fig. 3 is when pump is in safe standby condition（The risk do not damaged and frozen）When dry gas seals part and associated gas
Body supports the schematic diagram of system；
- Fig. 4 is the schematic diagram according to the pumping system of the disclosure；
- Fig. 5 represents the flow chart according to the step of disclosed method.
Detailed description
Exemplary embodiment is described below with reference to attached drawing.It is described in detail below not limit the disclosure.But the scope of the present invention
It is defined by the following claims.
This disclosure relates to oil-gas recovery device, that is, in offshore oil gas injector（implant）On.In more detail, this public affairs
It opens and is related to for carbon dioxide（CO2）The industrial equipment of application.
The most often shared application of some of carbon dioxide is re-injection, transport and the pure titanium dioxide of isolation in oil-gas recovery device
Carbon and carbon dioxide+hydrocarbon.
In the apparatus, at least one centrifugal pump is provided, it is preferable to provide at least two centrifugal pumps worked alternatively, with
When the first pump of box lunch is in operation/service condition, the second pump is in waiting condition.
Switching allows to reduce maintenance cost caused by due to replacing barrier fluid, and increase MTBF between pump（Failure it
Between average time）.
With more centrifugal pumps, then each pump can work the less time, so as to extend a failure and another it
Between expeced time（MTBF）.
In addition, avoiding equipment downtime using more centrifugal pumps, when that must be safeguarded to the first pump execution, can operate
Second pump.
The purpose of the disclosure is to provide one kind and is adapted for carrying out（Especially）The pumping system of advantages listed above.
First pump 300 and the second pump 400 are included at least according to the pumping system 200 of the disclosure, it is preferable that the first pump and the
Two pumps are centrifugal pumps, and at least one dry gas seals part is associated with each in the first pump and the second pump.
Pumping system 200 according to the present invention shares fluid delivery circuit 150 including process, it then includes the first barrier
The pump discharge 330 of first pump 300 is fluidly connected at least one dry gas of the second pump 400 by fluid delivery circuit 301
Sealing element, by barrier fluid conveying at least one dry gas seals part of the second pump 400.
Shared procedure fluid delivery circuit 150 according to the present invention includes the second barrier fluid delivery circuit 401, by the
The pump discharge 430 of two pumps 400 is fluidly connected at least one dry gas seals part of the first pump 300, and barrier fluid is defeated
It is sent at least one dry gas seals part of first pump.
According to the preferred embodiment of the present disclosure shown in Fig. 4, the first barrier fluid of the shared conveying circuit 150 is defeated
301 and second barrier fluid delivery circuit 401 of line sending road merges in shared branch line 500, is set on shared branch line 500
The pressure reducing valve 512, filter 514 and heating of the pressure for being suitable for reducing the barrier fluid from pump discharge 330,430 are put
Device 513.
It is also provided with shared collector in 513 downstream of heater about flow direction in the shared branch 500
515.Shared branch 500 is divided into two returning branch pipelines from the shared collector 515：First returning branch pipeline 517, will
The shared collector 515 is fluidly connected to the dry gas seals part of the first pump 300, and first return line 517 then includes
First barrier fluid conveying section 517a and the second barrier fluid conveying section 517b, first return line 517 it is described
Each in section is fluidly connected to one in the dry gas seals part of the first pump 300；And second returning branch
The shared collector 515 is fluidly connected to the dry gas seals part of the second pump 400, second returning branch by pipeline 518
Pipeline 518 then includes the first barrier fluid conveying section 518a and the second barrier fluid conveying section 518b, and described second returns
Each in the first section 518a and the second section 518b of return line 518 is fluidly connected to the dry of the second pump 400
One in seal.
With reference to Fig. 4, when the first pump 300 described in operating condition is in and treats in service condition and second pump 400
During machine condition, from the first pump discharge 330 of the first pump 300 to the process fluid of shared collector 515（For example, carbon dioxide
（CO2））Barrier fluid as the dry gas seals part for the second pump 400.
Similarly, when the second pump 400 described in operating condition is in service condition and first pump 300 is in standby
During condition, the process fluid from the second pump discharge 430 of the second pump 400 to shared collector 515 is used as the first pump 300
The barrier fluid of dry gas seals part.
The pressure of barrier fluid is reduced by pressure reducing valve 512, and is filtered by filter 514, and is then added by heater 513
Heat.Then barrier fluid is injected into the dry gas seals room of pump under waiting condition.
For example, when the first pump 300 is in service condition, the floss hole 330 of process fluid from the first pump 300 passes through
First barrier fluid delivery circuit 301 releases and enters shared branch line 500.
Then reduce the pressure of process fluid in shared branch 500 by pressure reducing valve 512, and then fluid by filter
514 filterings are simultaneously heated by shared heater 513.
Then, the process fluid for being prepared for the barrier fluid for seals is flowed into shared collector 515,
In, due to discontinuously operating, making all smoothing fluctuations and stablizing fluid properties.In this way, protection dry gas seals part is most crisp
Weak component（That is, sealing surface）From unexpected pressure change.
In the downstream of shared collector 515, process fluid is in waiting condition by the second returning branch pipeline 518 flow direction
The dry gas seals part of second pump 400.
First check-valve 302 is advantageously disposed on the first barrier fluid-transporting tubing 301, and second check-valve
402 are arranged on the second barrier fluid-transporting tubing 401.
As described above, when the described second pump is in waiting condition, it is consequently adapted to according to the pumping system 200 of the disclosure
Fluid is supplied from the pump discharge of the first operation pump 300（Such as carbon dioxide CO2）Flow and rinse the dry gas of the second pump 400
Sealing element or sealing element.
Similarly, when the first pump 300 is switched to waiting condition and the second pump 400 is switched to service condition, according to this
Disclosed pumping system 200 tends to the stream from the pump discharge supply process fluid of the second pump 400 and rinses the first pump 300
Dry gas seals part or sealing element.
Due to the pumping system according to the disclosure, very reliable and therefore yet very expensive additional mechanical supercharging is not needed to provide
Barrier fluid is provided to the dry gas of the pump in waiting condition to be in the All Time of waiting condition in pump by device compressor
Sealing element.Finally, if pumping system only includes two pumps and two pumps are simultaneously in waiting condition, to system offer compared with
It is sufficient that simple and relatively inexpensive booster is possible.In fact, using the pumping system according to the disclosure, the booster pressure
Contracting machine will be connected only in very rare situations and in all pumps in pumping system while the short time period in waiting condition.
Therefore, allowed more economical turbocharger compressor, and because the increasing are installed according to the pumping system of the disclosure
Depressor compressor is seldom connected, and the system is very reliable and energy saving.
Pumping system 200 according to the present invention allows pumping function being switched to waiting condition from service condition.
When the first pump 300 is in service condition, pump discharge 330 will screen by the first barrier fluid delivery circuit 301
Hinder fluid and be supplied to shared collector 515, and be eventually fed to the dry gas seals part of the second pump 400 in waiting condition.
When situation needs, for example, when first pump on needing attended operation when or when in short period of time alternately grasp
When two pumps of work are advantageous（For example, in order to increase the MTBF of pump）, the first pump 300 is transferred to waiting condition, and second pumps 400 turns
Enter operating condition.It is very versatile according to possibility of the pumping system of the disclosure about the operating condition of two pumps of switching,
So as to end user in view of situation and result to be achieved carry out pump operation in the best way with a large amount of possibilities.Due to the second screen
Hinder fluid delivery circuit 401, now for the second pump 400 of the pump of operation by the second barrier fluid delivery circuit 401 by barrier
Fluid is supplied to the first pump in waiting condition.
It will be apparent to one skilled in the art that pumping system can advantageously comprise more than two pump, such as three
A or four pumps.In these possible constructions, pumping system is by the barrier fluid delivery circuit including respective numbers.
Pumping system 200 according to the present invention can advantageously comprise control unit, be configured to the operating condition of switchable pump
And control the operating condition for being arranged on the device in barrier fluid delivery line.
Wherein, reached according to the pumping system of the disclosure including reducing maintainable cost, increasing MTBF and supercharging
Device compressor（It is no longer needed）Cost reduction result.
The disclosure further relate to for barrier fluid is provided to pump dry-type encapsulated part method.
Allow the dry type that barrier fluid is provided to pump when the pump is in waiting condition close according to disclosed method
It sealing and does not need to provide additional booster.In order to reach this as a result, the first operation is pumped by means of shared procedure fluid
Circuit treats pump described in being fluidly connected to.
This method includes at least disclosed following steps in a flow chart in figure 5.
First step 1 includes the barrier fluid of the discharge port from the first pump receiving being total to of with discharge port coupling
It enjoys in process fluid recovery train.
Second step 2 includes reducing the pressure of barrier fluid；
Third step 3 includes guiding the barrier fluid for reducing pressure to the second pump coupled with shared process fluid recovery train
Dry-type encapsulated part.
The method advantageously further comprises further step 2a herein above, and being included in reduces its pressure
Later and before the barrier fluid for reducing pressure to be guided to the dry-type encapsulated part to the second pump, filter and heat described shared
Barrier fluid in journey fluid recovery line.
According to method disclosed herein, when the first pump in service condition and the second pump in waiting condition when, and will
The barrier fluid of pump from service condition is supplied to the dry-type encapsulated part of standby pump.
At any time, the operation condition of two pumps can be switched so that the first pump is switched to waiting condition and the second pump is cut
Change to service condition.Due to shared procedure fluid recovery line, the barrier stream from the second pump of service condition will be now arranged in
Body is provided to the dry-type encapsulated part for the first pump for being now arranged in waiting condition.
The reference of " one embodiment " or " embodiment " is meaned to describe in conjunction with the embodiments in the whole instruction specific
Feature, structure or characteristic are included at least one embodiment of disclosed theme.Therefore, occur everywhere in the whole instruction
The phrase " in one embodiment " or be not necessarily meant to refer to identical embodiment " in embodiment ".In addition, special characteristic, knot
Structure or characteristic can combine in one or more embodiments in any suitable manner.
Claims (12)
1. pumping system（200）, including at least the first pump（300）With the second pump（400）, the pump（300,400）In it is each
It is a to be equipped with one or more dry gas seals parts and switch between waiting condition and service condition, the pump（300,400）
In each include at least pump intake and pump discharge（330,430）, the pumping system（200）It also includes at least and shared
Journey fluid delivery circuit（150）, the shared procedure fluid delivery circuit（150）By the pump（300,400）In each
The pump discharge（330,430）It is fluidly connected to the pump（300,400）In the dry gas seals part of each.
2. pumping system according to claim 1（200）, which is characterized in that the shared procedure fluid delivery circuit
（150）Including：Described first is pumped（300）Pump discharge（330）It is fluidly connected to shared pipeline（500）The first barrier
Fluid delivery circuit（301）And described second is pumped（400）Pump discharge（430）It is fluidly connected to the shared pipe
Line（500）The second barrier fluid delivery circuit（401）, the shared pipeline（500）Then it is fluidly connected to the pump
Dry gas seals part.
3. the pumping system according to preceding claims（200）, which is characterized in that the shared pipeline（500）At least set
There is pressure reducing valve（512）, at least provided with filter（514）, at least provided with heater（513）And at least provided with shared collector（515）,
The pressure reducing valve（512）Tend to reduce from the pump discharge（330,430）Barrier fluid pressure.
4. the pumping system according to preceding claims（200）, which is characterized in that in the shared collector（515）Under
Trip, the shared procedure fluid delivery circuit（100）The shared branch（500）It is divided into the first returning branch pipeline（517）
With the second returning branch pipeline（518）, the first returning branch pipeline（517）By the shared collector（515）Fluidly connect
It is connected to first pump（300）One or more of dry gas seals parts, and the second returning branch pipeline（518）By institute
State shared collector（515）It is fluidly connected to second pump（400）Dry gas seals part.
5. pumping system according to any one of the preceding claims（200）, which is characterized in that first check-valve（302）
It is arranged on the first barrier fluid-transporting tubing（301）On, and second check-valve（402）It is arranged on the second barrier stream
Body conveyance conduit（401）On.
6. pumping system according to any one of the preceding claims（200）, which is characterized in that the pump is centrifugal pump.
7. pumping system according to any one of the preceding claims（200）, which is characterized in that from the described first pump
（300）With the second pump（400）Pump discharge（330,430）The fluid of discharge is carbon dioxide（CO2）.
8. pumping system according to any one of the preceding claims（200）, which is characterized in that the pumping system
（200）Control unit is further included, described control unit is configured to switch the pump（300,400）Operating condition and control institute
State shared procedure fluid delivery circuit（150）Operating condition.
9. a kind of method comprising the following steps：
The barrier fluid of discharge port from the first pump is received to the shared procedure fluid coupled with the discharge port to return
In take-up road；
Reduce the pressure of the barrier fluid；With
The barrier fluid for reducing pressure is guided close to the dry type of the second pump coupled with the shared procedure fluid recovery line
Sealing.
10. method as claimed in claim 9, which is characterized in that the method is further comprising the steps of：
It is guided after the pressure for reducing the barrier fluid and by the barrier fluid for reducing pressure to the described second pump
Dry-type encapsulated part before, filter and heat the barrier fluid in the shared procedure fluid recovery line.
11. according to claim 9 or method according to any one of claims 10, which is characterized in that when the described first pump is in operation item
Part and when second pump is in waiting condition, the dry of standby pump is provided to by the barrier fluid from the service condition
Formula sealing element.
12. the method according to any one of claim 9 to 11, which is characterized in that the method is further comprising the steps of,
Including：Switch the action condition of described two pumps so that first pump reaches waiting condition and second pump reaches operation item
Part, future, the barrier fluid of pump of self-operating condition was provided to the dry-type encapsulated part of standby pump.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITUB2015A002842A ITUB20152842A1 (en) | 2015-08-04 | 2015-08-04 | Pumping system equipped with a barrier fluid supply circuit for dry seals. |
| IT102015000041608 | 2015-08-04 | ||
| PCT/EP2016/068407 WO2017021399A1 (en) | 2015-08-04 | 2016-08-02 | Pumping system with barrier fluid delivery circuit for dry gas seals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108138784A true CN108138784A (en) | 2018-06-08 |
| CN108138784B CN108138784B (en) | 2020-02-14 |
Family
ID=54347782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680045642.0A Active CN108138784B (en) | 2015-08-04 | 2016-08-02 | Pumping system with barrier fluid delivery circuit for dry gas seal |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20180223857A1 (en) |
| EP (1) | EP3332128B1 (en) |
| JP (1) | JP6850789B2 (en) |
| CN (1) | CN108138784B (en) |
| ES (1) | ES2788157T3 (en) |
| IT (1) | ITUB20152842A1 (en) |
| WO (1) | WO2017021399A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483590A (en) * | 2022-01-28 | 2022-05-13 | 浙江水泵总厂有限公司 | Machine seals washes structure and has its airtight pipeline system in vacuum |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309731A (en) * | 2017-08-29 | 2021-08-27 | 株式会社荏原制作所 | Sealing system |
| CN112681447B (en) * | 2021-01-06 | 2022-07-05 | 三门核电有限公司 | Nuclear power station plant water pump shaft seal water supply system |
| WO2023026493A1 (en) * | 2021-08-27 | 2023-03-02 | 川崎重工業株式会社 | Hydrogen gas transfer system |
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- 2016-08-02 CN CN201680045642.0A patent/CN108138784B/en active Active
- 2016-08-02 WO PCT/EP2016/068407 patent/WO2017021399A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018522162A (en) | 2018-08-09 |
| US20180223857A1 (en) | 2018-08-09 |
| WO2017021399A1 (en) | 2017-02-09 |
| CN108138784B (en) | 2020-02-14 |
| EP3332128A1 (en) | 2018-06-13 |
| JP6850789B2 (en) | 2021-03-31 |
| EP3332128B1 (en) | 2020-02-26 |
| ITUB20152842A1 (en) | 2017-02-04 |
| ES2788157T3 (en) | 2020-10-20 |
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