CN109372805A - Coal tar hydrogenating feeds the flusher of pump mechanical sealing and its rinses the plan of establishment - Google Patents
Coal tar hydrogenating feeds the flusher of pump mechanical sealing and its rinses the plan of establishment Download PDFInfo
- Publication number
- CN109372805A CN109372805A CN201811520835.4A CN201811520835A CN109372805A CN 109372805 A CN109372805 A CN 109372805A CN 201811520835 A CN201811520835 A CN 201811520835A CN 109372805 A CN109372805 A CN 109372805A
- Authority
- CN
- China
- Prior art keywords
- plan62
- chilling liquid
- valve
- pressure steam
- feed pump
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 239000011280 coal tar Substances 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 79
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 54
- 239000001257 hydrogen Substances 0.000 claims abstract description 54
- 238000011010 flushing procedure Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 230000004087 circulation Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims 1
- 210000004907 gland Anatomy 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009991 scouring Methods 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Abstract
The present invention relates to a kind of flusher of coal tar hydrogenating charging pump mechanical sealing and its rinse the plan of establishment, water inlet, Plan62 chilling liquid recirculated water shut-off valve, Plan62 quenching medium sewage draining exit are recycled including flushing liquor entrance, Plan62 chilling liquid outside Plan32, Plan62 chilling liquid low-pressure steam inlet, Plan62 chilling liquid low-pressure steam shut-off valve, Plan32 needle valve.The present invention sealflushes the mode of both different chilling liquid of scheme access recirculated water and low-pressure steam by using Plan62, reduce plus when hydrogen feed pump longtime running high-temperature sticky feedstock oil the problem of sealing gland end is assembled, and as much as possible played when mechanical seal plays the role of starting to leak sign and restore its mechanical sealing performance, it reduces and the probability of safety accident occurs because of mechanical seal failure and also reduces maintenance cost to a certain extent；It can rinse, radiate again simultaneously, guaranteeing the working environment of sealing system, so that the configuration of the present invention is simple, economical rationality.
Description
Technical field
The invention belongs to the mechanical seal rinsing technical field of pump, in particular to one kind is in coal tar hydrogenating unit and class
It is close to a kind of machinery to work under high temperature, high viscosity environment like hydrogenation plant or generally in oil refining apparatus similar operations operating condition
It seals the flusher for the coal tar hydrogenating charging pump mechanical sealing being rinsed and its rinses the plan of establishment.
Background technique
Currently, mechanical seal very widely used, unplanned parking of 60% mechanical equipment according to statistics in pump class product
Accident and seal failure cause leakage to have directly to contact, and mechanical seal rinsing scheme become influence mechanical seal using effect with
One important link of service life.For coal tar hydrogenating unit front end conveying plus hydrogen high temperature feedstock oil medium plus hydrogen charging
The mechanical seal rinsing scheme of pump not only requires scouring media to can be carried out flushing heat dissipation to high-temperature centrifugal pump mechanical seal, reduces
Liquid temperature, it is often more important that the intracorporal process fluid of energy clean seal chamber and impurity, to improve seal chamber working environment, to guarantee
The safe long-term operation of mechanical seal.
For close to machinery the characteristics of adding hydrogen feed pump working media high temperature, high pressure, high viscosity in coal tar hydrogenating unit
The influence that working environment generates is sealed, that such as directly selects double mechanical seal sealflushes scheme, due to adding hydrogen feed pump big
Mostly with the centrifugal multistage pump multiple centrifugal pump of balance pipe, seal chamber intracorporal pressure in front and back end is substantially equal to or slightly above pump inlet pressure,
Meeting so that plus hydrogen charging multistage pump seal cavity structure is complicated changes, while flushing scheme configuration is increase accordingly, and multistage pump is general
Be divided into driving end and anti-drive end, both ends must respectively configure a set of both-end mechanical seal and sealflush system so that economy and
Operability is greatly lowered.But the simple flushing scheme single using single mechanical end face seal and configuration, if cannot be effective
Solve high-temperature medium sealing gland end rendezvous problem, it is likely that will lead to mechanical seal do not have good working environment from
And accelerate the abrasion of mechanical seal, reduce the service life of mechanical seal, cause machinery maintenance frequent；Seriously affect production
The long-term operation of device and the maintenance operation cost of equipment.What is more may be because of high-temperature medium when mechanical seal damage
It leaks and causes safety accident, environment generation is seriously affected.
Summary of the invention
The purpose of the present invention is for prior art economic cost is high in background technique, be not easy to operation, cannot effectively solve
Certainly high-temperature medium sealing gland end rendezvous problem, reduce mechanical seal service life, it is dangerous, seriously affect environment etc. no
Foot, provide a kind of economic cost it is low, convenient for operating, can guarantee what high-temperature sticky raw material oil medium was not assembled at sealing gland
The operating temperature that mechanical seal can be effectively ensured again simultaneously is suitable for, can use up maximum when mechanical seal normal leakage amount is gradually increased
May restore the effect of its mechanical sealing performance, Plan32 and Plan62 sealflush combination coal tar hydrogenating feed pump machinery it is close
The flusher of envelope and its flushing plan of establishment.
A kind of coal tar hydrogenating charging adds the flusher of hydrogen charging pump mechanical sealing, for flushing plus hydrogen feed pump machinery
Sealing, including flushing liquor entrance outside the Plan32 added at the top of hydrogen charging pump mechanical sealing is arranged in, setting is adding hydrogen to feed pump machine
The Plan62 that Plan62 chilling liquid at the top of tool end cover recycles water inlet, is arranged on Plan62 chilling liquid circulation water inlet
The Plan62 quenching medium sewage draining exit for adding hydrogen feed pump mechanical sealing end cover bottom is arranged in chilling liquid recirculated water shut-off valve.Add
The side of hydrogen feed pump is equipped with pump raw material oil-in, adds and is additionally provided with pump material oil outlet at the top of hydrogen feed pump.
Plan62 chilling liquid recirculated water shut-off valve and add hydrogen feed pump mechanical sealing end cover between pipeline on be further connected with
Plan62 chilling liquid low-pressure steam inlet.Plan62 chilling liquid low-pressure steam inlet is cut equipped with Plan62 chilling liquid low-pressure steam
Only valve.The outer flushing liquor inlet Plan32 is equipped with Plan32 needle valve.
It is a kind of to feed rushing for pump mechanical sealing using the flusher flushing plus hydrogen of above-mentioned coal tar hydrogenating charging pump mechanical sealing
Wash the plan of establishment, comprising the following steps:
1) when adding hydrogen feed pump to operate normally, Plan62 chilling liquid low-pressure steam shut-off valve is closed, Plan62 chilling liquid follows
Ring water shut-off valve is opened.
It is passed through outer flushing liquor toward the outer flushing liquor entrance of Plan32, and is adjusted outer flushing flow quantity by Plan32 needle valve
To suitable flow status, outer flushing liquor is entered in the seal chamber for adding hydrogen feed pump by Plan32 needle valve, past at the same time
Plan62 chilling liquid circulation water inlet is passed through chilling liquid recirculated water, and chilling liquid recirculated water is ended by Plan62 chilling liquid recirculated water
Valve enters in the cavity for adding hydrogen feed pump end cover.
2) when adding hydrogen charging pump mechanical sealing normal leakage amount to be gradually increased, by Plan62 chilling liquid recirculated water shut-off valve
It closes, while Plan62 chilling liquid low-pressure steam shut-off valve being opened；Low pressure is passed through toward Plan62 chilling liquid low-pressure steam inlet
Steam, low-pressure steam are entered in the cavity for adding hydrogen feed pump end cover by Plan62 chilling liquid low-pressure steam shut-off valve.
3) the outer flushing liquor after rinsing enters the urgency after the pump housing for adding hydrogen feed pump from pump material oil outlet discharge, after flushing
Cold liquid recirculated water and chilling liquid low-pressure steam are discharged by Plan62 quenching medium sewage draining exit.
The advantages of the present invention:
1, the present invention sealflushes scheme by using Plan62 and accesses two different chilling liquid (one is chilling liquid circulations
Water, another kind are chilling liquid low-pressure steams) mode so that reference medium relative to double mechanical seal isolation liquid medium letter
Dan Yi takes, and reduces high-temperature sticky feedstock oil when adding hydrogen feed pump longtime running and drops the problem of sealing gland end is assembled
The low probability because of mechanical seal failure occurrence of equipment safety accident and maintenance of the invention is also reduced to a certain extent
Cost；It can rinse, radiate again simultaneously, the effective working environment for guaranteeing sealing system, so that flusher structure of the present invention is simple
Single, economical rationality.
2, the present invention closes Plan62 chilling liquid circulation when adding hydrogen charging pump mechanical sealing normal leakage amount to be gradually increased
Water shut-off valve opens Plan62 chilling liquid low-pressure steam shut-off valve, and Plan62 chilling liquid low-pressure steam inlet is passed through low-pressure steam,
The high-temperature medium that leakage can be effectively ensured, which is diluted, to be taken away, and the pollution of external environment is avoided.
3, for the present invention when dielectric leakage, Plan62 chilling liquid low-pressure steam inlet is passed through low-pressure steam, is guaranteeing machinery
While sealing surface cleanliness, moreover it is possible to play and improve mechanical seal operating temperature, the dynamic and static ring of mechanical seal is allowed to play mutual grinding
Effect, then the sealing performance of maximal possible recovery mechanical seal seal face to a certain extent.
4, the outer flushing liquor that the outer flushing liquor entrance of Plan32 of the present invention is passed through can be adjusted more accurately by Plan32 needle valve
Its flow is saved, the deficiency of outer flushing liquor intake is avoided or is passed through excess, energy consumption can be effectively reduced.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that when element be considered as " setting " on the other element, it can be directly setting or company
Connect on the other element or may be simultaneously present centering elements.
Unless otherwise defined, the skill of all technical and scientific terms and technical field of the invention used herein
The normally understood meaning of art personnel is identical.Term used in the description is intended merely to describe specifically to implement purpose, is not
It is intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the flusher of a kind of coal tar hydrogenating charging plus hydrogen charging pump mechanical sealing, for flushing plus hydrogen charging
Pump mechanical sealing 15 is adding including flushing liquor entrance 3, setting outside the Plan32 for adding 15 top of hydrogen charging pump mechanical sealing is arranged in
Plan62 chilling liquid circulation water inlet 5 at the top of hydrogen feed pump mechanical sealing end cover, setting enter in Plan62 chilling liquid recirculated water
Plan62 chilling liquid recirculated water shut-off valve 51 on mouthfuls 5 is arranged in and adds the Plan62 of hydrogen feed pump mechanical sealing end cover bottom anxious
Cold medium sewage draining exit 53.
Wherein, add the side of hydrogen feed pump 1 to be equipped with pump raw material oil-in 11, add the top of hydrogen feed pump 1 to be additionally provided with pump former
Expect oil export 13.
Specifically, Plan62 chilling liquid recirculated water shut-off valve 51 and add hydrogen feed pump mechanical sealing end cover between pipeline on
It is further connected with Plan62 chilling liquid low-pressure steam inlet 55.Plan62 chilling liquid low-pressure steam inlet 55 is equipped with Plan62 chilling liquid
Low-pressure steam shut-off valve 57.Plan32 needle valve 31 is equipped at the outer flushing liquor entrance 3 of Plan32.
It is a kind of to feed pump mechanical sealing 15 using the flusher flushing plus hydrogen of above-mentioned coal tar hydrogenating charging pump mechanical sealing
Rinse the plan of establishment, comprising the following steps:
1) when adding hydrogen feed pump 1 to operate normally, Plan62 chilling liquid low-pressure steam shut-off valve 57 is closed, Plan62 chilling
Liquid recirculated water shut-off valve 51 is opened.
It is passed through outer flushing liquor toward the outer flushing liquor entrance 3 of Plan32, and passes through Plan32 needle valve 31 for outer flushing flow quantity
It is adjusted to suitable flow status, outer flushing liquor is entered in the seal chamber for adding hydrogen feed pump 1 by Plan32 needle valve 31, with this
It is passed through chilling liquid recirculated water toward Plan62 chilling liquid circulation water inlet 5 simultaneously, chilling liquid recirculated water is followed by Plan62 chilling liquid
Ring water shut-off valve 51 enters in the cavity for adding hydrogen feed pump mechanical sealing end cover.
2) when adding hydrogen charging 15 normal leakage amount of pump mechanical sealing to be gradually increased, Plan62 chilling liquid recirculated water is ended
Valve 51 is closed, while Plan62 chilling liquid low-pressure steam shut-off valve 57 being opened；Toward Plan62 chilling liquid low-pressure steam inlet 55
It is passed through low-pressure steam, low-pressure steam is entered by Plan62 chilling liquid low-pressure steam shut-off valve 57 plus hydrogen feeds pump mechanical sealing end
In the cavity of lid.
3) the outer flushing liquor after rinsing is discharged after entering the pump housing for adding hydrogen feed pump 1 from pump material oil outlet 13, after flushing
Chilling liquid recirculated water and chilling liquid low-pressure steam pass through Plan62 quenching medium sewage draining exit 53 be discharged.
The advantages of the present invention:
1, the present invention sealflushes scheme by using Plan62 and accesses two different chilling liquid (one is chilling liquid circulations
Water, another kind are chilling liquid low-pressure steams) mode so that reference medium relative to double mechanical seal isolation liquid medium letter
Dan Yi takes, and reduces high-temperature sticky feedstock oil when adding 1 longtime running of hydrogen feed pump and drops the problem of sealing gland end is assembled
The low probability because of mechanical seal failure occurrence of equipment safety accident and maintenance of the invention is also reduced to a certain extent
Cost；It can rinse, radiate again simultaneously, the effective working environment for guaranteeing sealing system, so that flusher structure of the present invention is simple
Single, economical rationality.
2, the present invention closes Plan62 chilling liquid when the mechanical seal normal leakage amount for adding hydrogen feed pump 1 is gradually increased
Recirculated water shut-off valve 51, opens Plan62 chilling liquid low-pressure steam shut-off valve 57, and Plan62 chilling liquid low-pressure steam inlet 55 is logical
Enter low-pressure steam, the high-temperature medium that leakage can be effectively ensured, which is diluted, to be taken away, and the pollution of external environment is avoided.
3, for the present invention when dielectric leakage, Plan62 chilling liquid low-pressure steam inlet 55 is passed through low-pressure steam, is guaranteeing machine
While tool sealing surface cleanliness, moreover it is possible to play and improve mechanical seal operating temperature, allow the dynamic and static ring of mechanical seal to play mutually to grind
The effect of mill, then the sealing performance of maximal possible recovery mechanical seal seal face to a certain extent.
4, the outer flushing liquor that the outer flushing liquor entrance 3 of Plan32 of the present invention is passed through can be relatively accurate by Plan32 needle valve 31
Its flow is adjusted, the deficiency of outer flushing liquor intake is avoided or is passed through excess, energy consumption can be effectively reduced.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content, is all described in the claims.
Claims (2)
1. a kind of flusher of coal tar hydrogenating charging pump mechanical sealing, adds hydrogen to feed pump mechanical sealing for rinsing, including
Flushing liquor entrance, setting outside the Plan32 added at the top of hydrogen charging pump mechanical sealing are set and adding hydrogen feed pump mechanical sealing end cover
The Plan62 chilling liquid circulation water inlet at top, the Plan62 chilling liquid circulation being arranged on Plan62 chilling liquid circulation water inlet
The Plan62 quenching medium sewage draining exit for adding hydrogen feed pump mechanical sealing end cover bottom is arranged in water shut-off valve, adds hydrogen feed pump
Side is equipped with pump raw material oil-in, adds and is additionally provided with pump material oil outlet at the top of hydrogen feed pump, which is characterized in that Plan62 chilling
Liquid recirculated water shut-off valve and add hydrogen feed pump mechanical sealing end cover between pipeline on be further connected with Plan62 chilling liquid low-pressure steam
Entrance, Plan62 chilling liquid low-pressure steam inlet are equipped with Plan62 chilling liquid low-pressure steam shut-off valve, the outer flushing liquor of Plan32
Inlet is equipped with Plan32 needle valve.
2. a kind of flusher using the charging pump mechanical sealing of coal tar hydrogenating described in claim 1 rinses plus hydrogen feed pump
The flushing plan of establishment of mechanical seal, which comprises the following steps:
1) when adding hydrogen feed pump to operate normally, Plan62 chilling liquid low-pressure steam shut-off valve is closed, Plan62 chilling liquid follows
Ring water shut-off valve is opened；
It is passed through outer flushing liquor toward the outer flushing liquor entrance of Plan32, and is adjusted to close by outer flushing flow quantity by Plan32 needle valve
Suitable flow status, outer flushing liquor is entered in the seal chamber for adding hydrogen feed pump by Plan32 needle valve, past at the same time
Plan62 chilling liquid circulation water inlet is passed through chilling liquid recirculated water, and chilling liquid recirculated water is ended by Plan62 chilling liquid recirculated water
Valve enters in the cavity for adding hydrogen feed pump end cover；
2) when adding hydrogen charging pump mechanical sealing normal leakage amount to be gradually increased, Plan62 chilling liquid recirculated water shut-off valve is closed
It closes, while Plan62 chilling liquid low-pressure steam shut-off valve being opened, be passed through low pressure steaming toward Plan62 chilling liquid low-pressure steam inlet
Vapour, low-pressure steam are entered in the cavity for adding hydrogen feed pump end cover by Plan62 chilling liquid low-pressure steam shut-off valve；
3) the outer flushing liquor after rinsing enters the chilling liquid after the pump housing for adding hydrogen feed pump from pump material oil outlet discharge, after flushing
Recirculated water and chilling liquid low-pressure steam are discharged by Plan62 quenching medium sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811520835.4A CN109372805A (en) | 2018-12-12 | 2018-12-12 | Coal tar hydrogenating feeds the flusher of pump mechanical sealing and its rinses the plan of establishment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811520835.4A CN109372805A (en) | 2018-12-12 | 2018-12-12 | Coal tar hydrogenating feeds the flusher of pump mechanical sealing and its rinses the plan of establishment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372805A true CN109372805A (en) | 2019-02-22 |
Family
ID=65373398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811520835.4A Pending CN109372805A (en) | 2018-12-12 | 2018-12-12 | Coal tar hydrogenating feeds the flusher of pump mechanical sealing and its rinses the plan of establishment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372805A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202822A (en) * | 2021-05-24 | 2021-08-03 | 恒力石化（大连）炼化有限公司 | Device and method for treating mechanical seal leakage of centrifugal pump |
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2018
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| CN108799191A (en) * | 2018-07-18 | 2018-11-13 | 四川天宇油脂化学有限公司 | A kind of machine seal structure of circulating pump |
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| CN209145995U (en) * | 2018-12-12 | 2019-07-23 | 长岭炼化岳阳工程设计有限公司 | The flusher of coal tar hydrogenating charging pump mechanical sealing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113202822A (en) * | 2021-05-24 | 2021-08-03 | 恒力石化（大连）炼化有限公司 | Device and method for treating mechanical seal leakage of centrifugal pump |
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