CN113118149A - Disassembly-free online self-cleaning system and method for pipeline equipment - Google Patents
Disassembly-free online self-cleaning system and method for pipeline equipment Download PDFInfo
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- CN113118149A CN113118149A CN202110443376.XA CN202110443376A CN113118149A CN 113118149 A CN113118149 A CN 113118149A CN 202110443376 A CN202110443376 A CN 202110443376A CN 113118149 A CN113118149 A CN 113118149A
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- cleaning
- pipeline
- medium
- disassembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
Abstract
The invention provides a disassembly-free online self-cleaning system and a disassembly-free online self-cleaning method for pipeline equipment. The self-cleaning method of the system comprises the following steps: when the cleaning unit needs cleaning, cleaning media in the cleaning media cache unit flow into the pipeline equipment through the cleaning media inlet, flow out of the pipeline equipment through the cleaning media outlet and then flow back to the cleaning media cache unit; unqualified cleaning media and redundant qualified cleaning media in the cleaning medium cache unit are processed by the external processing unit, and the qualified cleaning media in the cache unit are supplemented by the external processing unit when insufficient. The invention utilizes the pipeline medium in the production system to self-prepare the cleaning medium, thereby reducing the cleaning cost of the pipeline equipment, effectively improving the cleaning efficiency and reducing the construction risk of operators.
Description
Technical Field
The invention relates to the technical field of equipment for collecting, conveying, storing and treating chemical oil gas and chemical oil, in particular to a disassembly-free online self-cleaning system and method for pipeline equipment.
Background
Various pipeline devices such as flame arresters and filters exist on pipelines for conveying combustible gas in refining enterprises, and pipeline device blockage is easily caused when more impurities exist in the conveyed gas, such as gas phase pipeline flame arresters of crude oil tanks, waste oil tanks and intermediate oil tanks, pipeline fluid circulation is not smooth due to pipeline device blockage, pipeline pressure drop is increased, normal circulation of pipeline media is influenced, and production stability of the device is influenced; for example, a filter for filtering impurities and dirty materials in a pipeline is used for filtering heavy materials such as crude oil, asphalt, residual oil, wax oil and the like, and impurities, particles, colloid and the like carried in the materials are easy to block a core piece of cleaned equipment, increase the pressure drop of the pipeline, influence the normal circulation of pipeline media and cause the fault of rear-end equipment.
Usually, these pipeline equipments need regularly to be cleared up, because pipeline equipment installs on fuel gas pipeline, the clearance needs to be demolishd pipeline equipment every time, installs after the clearance is accomplished, and the operating procedure is loaded down with trivial details. And the hidden danger of fuel gas leakage exists every time the equipment is dismantled, which not only causes resource waste, but also easily causes safety accidents such as fire and the like, and has safety risk. In addition, in actual operation, there is a possibility that the apparatus cannot be disassembled due to clogging by mechanical impurities and corrosion of media. Therefore, it has become desirable to provide a disassembly-free online cleaning system.
CN 111167771A discloses a system and a process method for online closed cleaning and detection of a flame arrester, the method firstly utilizes the characteristic of impurities causing blockage in the flame arrester, and through designing a reasonable cleaning sequence, firstly utilizes fresh water to remove large-particle impurities attached in a flame-retardant disc, and then utilizes high-temperature steam to remove viscous impurities in the flame-retardant disc, and finally utilizes nitrogen to complete the purging of a pipeline and the inspection of a descaling effect. CN 209725850U discloses a flame arrester cleaning system, which comprises: the purging device is connected to the fuel gas pipeline, is positioned at the downstream of the flame arrester and is used for introducing purging gas; the low-point condensation discharging device is connected to the fuel gas pipeline, is positioned at the upstream of the flame arrester and is used for discharging swept impurities; the fuel gas shut-off valve comprises a fuel gas upstream shut-off valve and a fuel gas downstream shut-off valve, the fuel gas upstream shut-off valve is positioned at the upstream of the low-point condensate discharging device, and the fuel gas downstream shut-off valve is positioned at the downstream of the purging device; and the high-point emptying device is positioned on the fuel gas pipeline, and the bottom of the high-point emptying device is connected with the fuel gas pipeline.
Through the method, although the flame arrester can be cleaned in an online closed manner, all cleaning media such as fresh water, high-temperature steam, nitrogen and the like are supplied from the outside, so that the treatment cost is increased; furthermore, neither of the above methods discloses a subsequent treatment of the cleaning medium.
CN 109708518A discloses a cleaning agent for a desalted sewage heat exchanger, an online cleaning method and a system, wherein the method comprises the following steps: (1) after the pressure drop value of the inlet and the outlet of a certain heat exchanger in the heat exchanger group is monitored to be increased and exceed a reasonable range, the heat exchanger is cut into the heat exchanger group through a bypass; (2) starting a dosing system, and feeding a cleaning agent into the heat exchanger for flushing through a agent conveying pipeline; (3) when the pressure drop of the inlet and the outlet of the heat exchanger returns to normal, the dosing system and the bypass are closed, and the heat exchanger is merged into the heat exchanger group again. The method realizes the online cleaning of the heat exchanger group, and simultaneously discloses a self-made cleaning agent, but the cleaning agent needs to be prepared by adopting a chemical agent, so that the treatment cost is increased; in addition, the method is applied to the technical field of cleaning of sewage heat exchangers, and is different from the technical field of equipment for collecting, conveying, storing and treating chemical oil gas and chemical oil.
Therefore, how to provide a disassembly-free and online self-cleaning process method applied to the technical field of chemical oil and gas and chemical oil collecting, conveying, storing and treating equipment becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a disassembly-free online self-cleaning system and method for pipeline equipment. The disassembly-free online self-cleaning system for the pipeline equipment, provided by the invention, has a simple structure, can utilize a pipeline medium in the system to self-control a cleaning medium, and reduces the cleaning cost of the pipeline equipment; the device can effectively avoid the pipeline medium overflow and environment pollution in the pipeline equipment dismounting process, improves the cleaning efficiency and avoids the potential explosion risk.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a disassembly-free online self-cleaning system for pipeline equipment, which comprises a cleaning unit, an external processing unit and a cleaning medium cache unit;
the cleaning unit comprises at least 2 pipeline devices connected in parallel;
the top end of the pipeline equipment is provided with a cleaning medium inlet and a pipeline medium outlet, and the bottom end of the pipeline equipment is provided with a pipeline medium inlet and a cleaning medium outlet;
the pipeline medium outlet, the external processing unit and the cleaning medium cache unit are sequentially connected;
the cleaning medium outlet and the cleaning medium cache unit are sequentially connected with the external processing unit;
a cleaning medium outlet of the cleaning medium caching unit is connected with the pipeline equipment through a cleaning medium inlet;
the unqualified cleaning medium outlet of the cleaning medium caching unit is connected with an external processing unit;
the pipeline medium inlet is connected with a pipeline medium input pipeline.
The number of line devices in the cleaning unit according to the invention is at least 2, for example 2, 3, 4, 5, 6 or 8, but is not limited to the values listed, and other values not listed in the range of values are equally applicable.
According to the invention, the cleaning unit comprises at least 2 pipeline devices connected in parallel, so that the pipeline devices in the cleaning unit are one-opened or multiple-opened and multiple-standby, and when the pipeline devices to be cleaned need to be cleaned, the pipeline devices are switched, and the continuous treatment of the cleaning unit on the pipeline media is ensured.
The external processing unit is used for receiving and processing unqualified cleaning media and providing the cleaning media.
The disassembly-free online self-cleaning system for the pipeline equipment is also provided with necessary valves, so that a person skilled in the art can reasonably set the valves according to the operation of the equipment, and the disassembly-free online self-cleaning system for the pipeline equipment is not limited by the invention.
When the pipeline equipment is used for the disassembly-free online self-cleaning system, pipeline media enter the cleaning unit through the pipeline media input pipeline and flow into the external processing unit after passing through the cleaning unit. Simultaneously, the generated cleaning medium mother liquor enters a cleaning medium cache unit; the external processing unit has the function of directly supplementing qualified cleaning media to the cleaning medium caching unit, the cleaning medium caching unit has the function of purifying and separating mother liquor and cleaned media into qualified cleaning media and unqualified cleaning media, and the cleaning media in the cleaning medium caching unit are used for cleaning pipeline equipment to be cleaned; unqualified cleaning media in the cleaning media buffer unit are processed by an external processing unit. The disassembly-free online self-cleaning system for the pipeline equipment provided by the invention has the advantages that under normal working conditions, cleaning agents are not required to be introduced from the outside to clean the pipeline equipment, so that not only can the continuous treatment of external pipeline media be ensured, but also the running cost of the pipeline equipment can be reduced.
Preferably, the wash medium buffer unit comprises at least 2 wash medium buffer tanks connected in parallel.
The number of parallel connected cleaning medium buffer tanks in the cleaning medium buffer unit according to the present invention is at least 2, for example, 2, 3, 4, 5, 6 or 8, but is not limited to the recited values, and other values not recited in the range of values are also applicable.
According to the invention, the cleaning medium cache unit comprises at least 2 cleaning medium cache tanks connected in parallel, so that the at least 2 cleaning medium cache tanks connected in parallel can be opened one by one or opened more by more than one, and the cleaning medium cache tanks can not only realize the standing purification of the cleaning medium, but also realize the reladling of the cleaning medium. The cleaning medium buffer tank can be opened and prepared for multiple times and is mainly used for working conditions of multiple purification and long-period standing.
Preferably, a communication pipeline which can be switched on and off is arranged between any 2 cleaning medium buffer tanks.
Preferably, the pipeline apparatus comprises a pipeline apparatus comprising a pipeline block.
The pipeline easy-plugging part is mainly used for parts which have high viscosity and contain jelly or easy-to-crystallize pipeline media and can be plugged in the flowing process.
Preferably, the piping equipment containing the piping block comprises a flame arrestor or a filter.
Preferably, the line arrangement is provided with a differential pressure gauge.
The differential pressure meter is used for measuring the differential pressure between the pipeline medium inlet and the pipeline medium outlet of the pipeline equipment so as to judge whether the pipeline equipment needs to be cleaned or not. The invention does not specifically limit the type of the differential pressure gauge, as long as the differential pressure between the pipeline medium inlet and the pipeline medium outlet of the pipeline equipment can be realized.
Preferably, the connection pipeline of the unqualified cleaning medium outlet and the external treatment unit is provided with a first check valve.
The first check valve of the invention is used for preventing unqualified cleaning medium from flowing back to the cleaning medium buffer unit.
Preferably, a connecting pipeline of the cleaning medium delivery port and the cleaning medium inlet of the cleaning medium buffer tank is sequentially provided with a delivery device and a second check valve.
The conveying device comprises but is not limited to a power pump, and provides pressurized cleaning for pipeline equipment, so that the cleaning effect of the pipeline equipment is ensured.
The second check valve of the present invention functions to prevent the cleaning medium from flowing back to the cleaning medium buffer unit.
Preferably, the cleaning medium buffer tank is provided with a detection device; the detection device includes any one or more of a liquid level detection device, a density detection device, a pressure detection device or a temperature detection device, and typical but non-limiting combinations include a combination of a liquid level detection device and a density detection device, a combination of a density detection device and a pressure detection device, a combination of a pressure detection device and a temperature detection device, or a combination of a liquid level detection device, a density detection device, a pressure detection device and a temperature detection device.
Preferably, the liquid level detection device of the present invention is a liquid level detection device conventional in the art, including but not limited to a liquid level meter.
Preferably, the density detection device of the present invention is a density monitoring device conventional in the art, including but not limited to a densitometer.
Preferably, the pressure detecting device of the present invention is a pressure detecting device conventional in the art, including but not limited to a pressure gauge.
Preferably, the temperature detecting device of the present invention is a temperature detecting device conventional in the art, including but not limited to a thermometer.
The detection device is used for detecting the quality of the cleaning medium in the cleaning medium cache tank and judging whether the cleaning medium can be used for cleaning pipeline equipment.
Preferably, the pipeline equipment disassembly-free online self-cleaning system is integrated in the skid block.
In a second aspect, the invention provides a self-cleaning method of a disassembly-free online self-cleaning system of pipeline equipment, which comprises the following steps: when the cleaning unit needs cleaning, cleaning media in the cleaning media cache unit flow into the pipeline equipment through the cleaning media inlet, flow out of the pipeline equipment through the cleaning media outlet and then flow back to the cleaning media cache unit;
unqualified cleaning media and redundant qualified cleaning media in the cleaning medium cache unit are processed by the external processing unit, and the qualified cleaning media in the cache unit are supplemented by the external system when insufficient.
As a preferred technical scheme of the invention, the pipeline equipment in the disassembly-free online self-cleaning system is a flame arrester.
The flame arrester includes a flame arrester outer housing, a flame arrester core, and a differential pressure gauge.
And a pipeline medium outlet and a cleaning medium inlet are formed in the top end of the flame arrester outer shell.
And a pipeline medium inlet and a cleaning medium outlet are formed in the bottom end of the flame arrester outer shell.
The fire retardant core is arranged inside the outer shell of the fire retardant device.
The flame arrester outer shell between the pipeline medium inlet and the pipeline medium outlet is provided with local diameter expansion.
And a vortex device is arranged at the starting point of local diameter expansion in the axial direction of the flowing of the pipeline medium in the flame arrester outer shell.
And a tubular filter screen is arranged at the end point of local diameter expansion in the axial direction of the flowing of the pipeline medium in the flame arrester outer shell.
And a flow guide device is arranged on the inner wall of the local diameter expansion.
A buffer device is further arranged inside the flame arrester outer shell; the buffer device is arranged between the cleaning medium outlet and the tubular filter screen.
The flame arrester outer shell is internally provided with at least 3 flow guide pieces, at least 1 flow guide piece is arranged between a cleaning medium inlet and a pipeline medium outlet, at least 1 flow guide piece is arranged between a pipeline medium inlet and a buffer device, and at least 1 flow guide piece is arranged between a tubular filter screen and the buffer device.
The flow cross-sectional area of the pipeline at the local diameter expansion part is not less than that of the pipeline of the flame arrester.
The fire retardant core is arranged between the local diameter expansion and the cleaning medium inlet.
Compared with the prior art, the invention has the following beneficial effects:
the disassembly-free online self-cleaning system for the pipeline equipment, provided by the invention, has a simple structure, can utilize the pipeline medium in the production system to self-control the cleaning medium, reduces the cleaning cost of the management equipment, effectively avoids the pipeline medium overflowing to pollute the environment in the disassembly process of the pipeline equipment, can effectively improve the cleaning efficiency, and is more suitable for industrial application.
Drawings
FIG. 1 is a schematic view of a disassembly-free online self-cleaning system for a plumbing installation of the present invention;
FIG. 2 is a schematic illustration of the construction of a flame arrestor used in example 3.
Wherein: 1, a cleaning unit; 1-1, a fourth valve; 1-2, a fourteenth valve; 1-3, a third valve; 1-4, a tenth valve; 1-5, a differential pressure detection device; 1-6, a first valve; 1-7, an eleventh valve; 1-8, a second valve; 1-9, a tenth valve; 1-10, a first pipeline apparatus; 1-11, a second pipeline apparatus; 2, an external processing unit; 2-1, unqualified cleaning medium inlet; 2-2, a cleaning medium outlet; 3, cleaning the medium buffer unit; 3-1, a fifth valve; 3-2, a seventh valve; 3-3, a sixth valve; 3-4, an eighth valve; 3-5, a fifteenth valve; 3-6, a seventeenth valve; 3-7, a sixteenth valve; 3-8, tenth valve; 3-9, ninth valve; 3-10, a detection device; 3-11, a first check valve; 3-12, a first cleaning medium buffer tank; 3-13, a second cleaning medium buffer tank; 4-1, a power pump; 4-2, a second check valve.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
As the preferred technical scheme of the disassembly-free online self-cleaning system for the pipeline equipment, the disassembly-free online self-cleaning system for the pipeline equipment comprises a cleaning unit 1, an external processing unit 2 and a cleaning medium cache unit 3;
the cleaning unit 1 comprises at least 2 sets of pipeline equipment connected in parallel; the pipeline equipment is provided with a differential pressure gauge;
the top end of the pipeline equipment is provided with a cleaning medium inlet and a pipeline medium outlet, and the bottom end of the pipeline equipment is provided with a pipeline medium inlet and a cleaning medium outlet;
the pipeline medium outlet, the external processing unit 2 and the cleaning medium cache unit 3 are sequentially connected;
the cleaning medium outlet and the cleaning medium cache unit 3 are sequentially connected with the external processing unit 2;
a cleaning medium outlet of the cleaning medium caching unit 3 is connected with pipeline equipment through a cleaning medium inlet; the connecting pipeline of the cleaning medium outlet and the cleaning medium inlet is sequentially provided with a conveying device and a second check valve 4-2;
the unqualified medium outlet of the cleaning medium buffer unit 3 is connected with the external processing unit 2; a first check valve 3-11 is arranged on a connecting pipeline of the unqualified medium outlet and the external processing unit;
the pipeline medium inlet is connected with a pipeline medium input pipeline;
the cleaning medium buffer unit comprises at least 2 cleaning medium buffer tanks connected in parallel, and a communication pipeline is arranged between any 2 cleaning medium buffer tanks.
Further preferably, the pipeline equipment disassembly-free online self-cleaning system is arranged in a prying block.
Example 1
The embodiment provides a disassembly-free online self-cleaning system for pipeline equipment, which comprises a cleaning unit 1, an external processing unit 2 and a cleaning medium buffer unit 3, as shown in FIG. 1.
The cleaning unit comprises a first pipeline device 1-10 and a second pipeline device 1-11 which are connected in parallel, and the first pipeline device 1-10 and the second pipeline device 1-11 are respectively and independently a commercially available flame arrester.
The top end of the first pipeline device is provided with a fourth valve 1-1 and a second valve 1-8, and the bottom end of the first pipeline device is provided with a third valve 1-3 and a first valve 1-6.
The top end of the second pipeline device is provided with a fourteenth valve 1-2 and a tenth valve 1-9, and the bottom end of the second pipeline device is provided with an eleventh valve 1-7 and a tenth valve 1-4.
The fourth valve 1-1 and the fourteenth valve 1-2 are connected in parallel to form a cleaning medium inlet, the second valve 1-8 and the tenth valve 1-9 are connected in parallel to form a pipeline medium outlet, the first valve 1-6 and the eleventh valve 1-7 are connected in parallel to form a pipeline medium inlet, and the third valve 1-3 and the tenth valve 1-4 are connected in parallel to form a cleaning medium outlet.
The pipeline medium outlet, the external processing unit 2 and the cleaning medium buffer unit 3 are connected in sequence.
The cleaning medium outlet and the cleaning medium buffer unit 3 are connected with the external processing unit 2 in sequence.
A cleaning medium outlet of the cleaning medium caching unit is connected with the cleaning unit through a cleaning medium inlet; and a connecting pipeline of the cleaning medium outlet and the cleaning medium inlet is sequentially provided with a power pump 4-1 and a second check valve 4-2.
And an unqualified medium outlet of the cleaning medium caching unit is connected with an external processing unit, and a first check valve 3-11 is arranged on a connecting pipeline between the unqualified medium outlet and the cleaning medium caching unit.
The cleaning medium buffer unit comprises a first cleaning medium buffer tank and a second cleaning medium buffer tank which are connected in parallel. A communicating pipeline is arranged between the first cleaning medium cache tank 3-12 and the second cleaning medium cache tank 3-13; the communication line is provided with ninth valves 3-9.
A differential pressure gauge 1-5 is arranged between the pipeline medium inlet and the pipeline medium outlet of the first pipeline device 1-10, and the differential pressure gauge 1-5 is used for measuring the differential pressure between the pipeline medium inlet and the pipeline medium outlet of the pipeline device so as to judge whether the first pipeline device 1-10 needs to be cleaned or not; a differential pressure gauge 1-5 is arranged between the pipeline medium inlet and the pipeline medium outlet of the second pipeline device 1-11, and the differential pressure gauge 1-5 is used for measuring the differential pressure between the pipeline medium inlet and the pipeline medium outlet of the pipeline device so as to judge whether the second pipeline device 1-11 needs to be cleaned.
The first cleaning medium cache tank 3-12 is provided with a detection device 3-10, and the detection device 3-10 comprises a liquid level meter, a density detection device, a pressure detection device and a temperature detection device; the second cleaning medium buffer tank 3-13 is provided with a detection device 3-10, and the detection device 3-10 comprises a liquid level meter, a density detection device, a pressure detection device and a temperature detection device.
The pipeline equipment disassembly-free online self-cleaning system is arranged in the prying block.
For example, in the case that the first pipeline apparatus 1-10 is in the on-line state and the second pipeline apparatus 1-11 is in the standby state, the method for applying the pipeline apparatus disassembly-free online self-cleaning system provided by the present embodiment comprises the following steps:
(1) when the first pipeline equipment 1-10 is in a use state, the first valves 1-6 and the second valves 1-8 are in a normally open state, and the eleventh valves 1-7 and the tenth valves 1-9 are in a closed state; the differential pressure meter 1-5 measures the differential pressure between the first valve 1-6 and the second valve 1-8 of the first pipeline equipment in real time, and enters a cleaning process when the differential pressure measured by the differential pressure meter reaches an alarm value;
(2) opening the eleventh valve 1-7 and the tenth valve 1-9 to start the second pipeline apparatus 1-11; simultaneously closing the first valve 1-6 and the second valve 1-8, and isolating the first pipeline device 1-10;
(3) judging whether qualified cleaning media exist in the cleaning media cache unit or not, if so, directly executing the step (4), if not, opening a fifteenth valve 3-6 to introduce the cleaning media into a second cleaning media cache tank 3-13, and when the cleaning media in the second cleaning media cache tank 3-13 reach the amount, selectively opening a ninth valve 3-9 according to the situation to overflow the cleaning media to a first cleaning media cache tank 3-12;
(4) opening a sixteenth valve 3-7, a fourth valve 1-1, a third valve 1-3 and a fifth valve 3-1, starting a power pump 4-1, injecting a cleaning medium into a cavity of the flame arrester, and allowing the viscous attachments in the flame arrester to flow to a first cleaning medium buffer tank 3-12 through the fifth valve 3-1 after being purged;
(5) the first cleaning medium buffer tank 3-12 collects cleaning medium, then purifies and separates the cleaning medium, and qualified medium is sent to the second cleaning medium buffer tank 3-13;
(6) the eighth valve 3-4 is opened and the reject medium in the first cleaning medium buffer tank 3-12 is discharged to the external treatment unit 2.
During cleaning, the differential pressure gauge 1-5 measures the differential pressure between the first valve 1-6 and the second valve 1-8 of the flame arrester, and if the differential pressure value of the differential pressure gauge is still above an alarm value, cleaning is continued; if the differential pressure value of the differential pressure gauge 1-5 is lower than the alarm value, the fire arrestor is qualified to be cleaned, and the self-cleaning process of the fire arrestor is completed.
Example 2
This example differs from example 1 only in that: the first and second pipeline apparatuses 1 to 10 and 1 to 11 are each independently a filter.
For example, in the case that the second pipeline apparatus 1-11 is in the on-line state and the first pipeline apparatus 1-10 is in the standby state, the method for applying the pipeline apparatus in the present embodiment to the disassembly-free online self-cleaning method comprises the following steps:
(1) when the second pipeline equipment is in a commissioning state, the eleventh valve 1-7 and the tenth valve 1-9 are in a normally open state, and the first valve 1-6 and the second valve 1-8 are in a closed state; the differential pressure meter 1-5 measures the differential pressure between the eleventh valve 1-7 and the tenth valve 1-9 of the second pipeline equipment in real time, and enters a cleaning process when the differential pressure measured by the differential pressure meter reaches an alarm value;
(2) opening the first valve 1-6 and the second valve 1-8 to start to use the first pipeline equipment; simultaneously closing the eleventh valve 1-7 and the tenth valve 1-9, isolating the second pipe apparatus 1-11;
(3) judging whether qualified cleaning media exist in the cleaning media cache unit or not, if so, directly executing the step (4), if not, opening a fifteenth valve 3-6 to introduce the cleaning media into a second cleaning media cache tank 3-13, and when the cleaning media in the second cleaning media cache tank 3-13 reach the amount, selectively opening a ninth valve 3-9 according to the situation to overflow the cleaning media to a first cleaning media cache tank 3-12;
(4) opening a sixteenth valve 3-7, a fourteenth valve 1-2, a thirteenth valve 1-4 and a fifth valve 3-1, starting a power pump 4-1, injecting a cleaning medium into a cavity of the flame arrester, and allowing the viscous attachments in the flame arrester to flow to a first cleaning medium buffer tank 3-12 through the fifth valve 3-1 after being purged;
(5) the first cleaning medium buffer tank 3-12 collects cleaning medium, then purifies and separates the cleaning medium, and qualified medium is sent to the second cleaning medium buffer tank 3-13;
(6) the eighth valve 3-4 is opened and the reject medium in the first cleaning medium buffer tank 3-12 is discharged to the external treatment unit 2.
During cleaning, the differential pressure gauge 1-5 measures the differential pressure between the eleventh valve 1-7 and the tenth valve 1-9 of the filter, and if the differential pressure value of the differential pressure gauge 1-5 is still above the alarm value, cleaning is continued; if the differential pressure value of the differential pressure gauge is lower than the alarm value, the filter is qualified to be cleaned, and the self-cleaning process of the filter is completed.
Example 3
This example differs from example 1 only in that: the first pipeline equipment 1-10 and the second pipeline equipment 1-11 are respectively and independently a flame arrester shown in figure 2, and the flame arrester comprises a flame arrester outer shell, a flame arrester core and a differential pressure gauge; the top end of the flame arrester outer shell is provided with a pipeline medium outlet and a cleaning medium inlet; the bottom end of the flame arrester outer shell is provided with a pipeline medium inlet and a cleaning medium outlet; the fire retardant core is arranged inside the fire retardant outer shell; the flame arrester outer shell between the pipeline medium inlet and the pipeline medium outlet is locally expanded; the inner part of the flame arrester outer shell is provided with a vortex device at the starting point of local diameter expansion along the axial direction of the flowing of pipeline media; a tubular filter screen is arranged at the end point of local diameter expansion in the axial direction of the flowing of the pipeline medium in the flame arrester outer shell; a flow guide device is arranged on the inner wall of the local diameter expansion; a buffer device is further arranged inside the flame arrester outer shell; the buffer device is arranged between the cleaning medium outlet and the tubular filter screen; at least 3 flow guide pieces are further arranged in the flame arrester outer shell, at least 1 flow guide piece is arranged between the cleaning medium inlet and the pipeline medium outlet, at least 1 flow guide piece is arranged between the pipeline medium inlet and the buffer device, and at least 1 flow guide piece is arranged between the tubular filter screen and the buffer device; the flow cross-sectional area of the pipeline at the local diameter expansion part is not less than that of the pipeline of the flame arrester; the fire retardant core is arranged between the local diameter expansion and the cleaning medium inlet.
Compared with the embodiment 1, in the cleaning process of the flame arrester, the cleaning medium inlet and the cleaning medium outlet are opened only by closing the pipeline medium inlet and the pipeline medium outlet of the flame arrester, and the cleaning medium washes the inner cavity of the flame arrester from top to bottom; the waste liquid after cleaning is discharged out of the flame arrester through a cleaning medium outlet or an impurity outlet. This embodiment is easy to operate more, and is provided with vortex device, tubulose filter screen and buffer inside the spark arrester shell body, has improved the cleaning efficiency of spark arrester, and guiding device has reduced the impact of pipeline detonation to follow-up pipe fitting.
In conclusion, the disassembly-free online self-cleaning system for the pipeline equipment, provided by the invention, has a simple structure, can utilize the pipeline medium in the production system to self-control the cleaning medium, reduces the cleaning cost of the management equipment, effectively avoids the pipeline medium overflowing to pollute the environment in the disassembly process of the pipeline equipment, can effectively improve the cleaning efficiency, and is more suitable for industrial application.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A disassembly-free online self-cleaning system for pipeline equipment is characterized by comprising a cleaning unit, an external processing unit and a cleaning medium caching unit;
the cleaning unit comprises at least 2 pipeline devices connected in parallel;
the top end of the pipeline equipment is provided with a cleaning medium inlet and a pipeline medium outlet, and the bottom end of the pipeline equipment is provided with a pipeline medium inlet and a cleaning medium outlet;
the pipeline medium outlet, the external processing unit and the cleaning medium cache unit are sequentially connected;
the cleaning medium outlet and the cleaning medium cache unit are sequentially connected with the external processing unit;
a cleaning medium outlet of the cleaning medium caching unit is connected with the pipeline equipment through a cleaning medium inlet;
the unqualified cleaning medium outlet of the cleaning medium caching unit is connected with an external processing unit;
the pipeline medium inlet is connected with a pipeline medium input pipeline.
2. The disassembly-free online self-cleaning system of pipeline equipment according to claim 1, wherein the cleaning medium buffer unit comprises at least 2 cleaning medium buffer tanks connected in parallel.
3. The disassembly-free online self-cleaning system of pipeline equipment according to claim 2, wherein a communication pipeline which can be switched on and off is arranged between any 2 cleaning medium buffer tanks.
4. The disassembly-free online self-cleaning system of pipeline equipment according to any one of claims 1 to 3, wherein the pipeline equipment comprises pipeline equipment comprising pipeline easily-plugging pieces;
preferably, the piping equipment containing the piping liable to block comprises a flame arrester or a filter;
preferably, the line arrangement is provided with a differential pressure gauge.
5. The disassembly-free online self-cleaning system of the pipeline apparatus according to any one of claims 1 to 4, wherein the connection pipeline of the unqualified cleaning medium outlet and the external processing unit is provided with a first check valve.
6. The disassembly-free online self-cleaning system of pipeline equipment according to any one of claims 1 to 5, wherein a connecting pipeline of the cleaning medium delivery port and the cleaning medium inlet of the cleaning medium buffer tank is sequentially provided with a delivery device and a second check valve.
7. The disassembly-free online self-cleaning system of pipeline equipment according to claim 2 or 3, wherein the cleaning medium buffer tank is provided with a detection device.
8. The disassembly-free online self-cleaning system of pipeline equipment according to claim 7, wherein the detection device comprises any one or combination of liquid level detection device, density detection device, pressure detection device or temperature detection device.
9. The plumbing disassembly-free online self-cleaning system of any one of claims 1-8, wherein the plumbing disassembly-free online self-cleaning system is integrated into a skid.
10. A self-cleaning method of a disassembly-free online self-cleaning system of a pipeline apparatus according to any one of claims 1 to 9, comprising the steps of: when the cleaning unit needs cleaning, cleaning media in the cleaning media cache unit flow into the pipeline equipment through the cleaning media inlet, flow out of the pipeline equipment through the cleaning media outlet and then flow back to the cleaning media cache unit;
unqualified cleaning media and redundant qualified cleaning media in the cleaning medium cache unit are processed by the external processing unit, and the qualified cleaning media in the cache unit are supplemented by the external processing unit when insufficient.
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