CN113458092B - On-line cleaning method for front and rear pipelines of hydraulic valve table - Google Patents
On-line cleaning method for front and rear pipelines of hydraulic valve table Download PDFInfo
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- CN113458092B CN113458092B CN202110728384.9A CN202110728384A CN113458092B CN 113458092 B CN113458092 B CN 113458092B CN 202110728384 A CN202110728384 A CN 202110728384A CN 113458092 B CN113458092 B CN 113458092B
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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
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Abstract
The invention relates to an online cleaning method for front and rear pipelines of a hydraulic valve table, which comprises the following steps: the hydraulic valve table is designed in a modularized way and can comprise a connecting block, a main pipeline flushing valve plate, a valve table control valve group and a valve group flushing block which can be replaced mutually; when the pipeline in front of the valve platform is flushed, the connecting block is replaced by a main pipeline flushing valve plate; after the pipeline in front of the valve platform is washed, replacing the main pipeline washing valve plate with a connecting block; when a pipeline behind the valve stand is flushed, the valve stand control valve group is replaced by a valve group flushing block, and a connecting hose between the valve stand control valve group and a hydraulic cylinder is disconnected from the hydraulic cylinder and is in short connection with the hydraulic cylinder to form a loop; after the pipeline behind the valve table is flushed, the valve group flushing block is replaced by the valve table control valve group, and the connection between the hydraulic cylinder and the connecting hose is restored. The invention can avoid the defect that temporary pipelines need to be annularly connected for flushing the pipelines in front of and behind the valve table, can complete the online flushing of the pipelines in front of and behind the valve table, greatly reduces the flushing action time and improves the working efficiency.
Description
Technical Field
The invention relates to the field of metallurgy, in particular to an online cleaning method for front and rear pipelines of a hydraulic valve table.
Background
In the industrial field, a hydraulic system is widely applied, and the cleanliness of oil in a hydraulic system pipeline directly influences the normal operation of the hydraulic system. After the hydraulic system piping is completed, the hydraulic system piping must be separated from a hydraulic valve table and an executive part (a hydraulic cylinder or a hydraulic motor) to strictly flush the pipeline until the cleanliness reaches the standard.
For the circular pipe connection washing of the front pipeline and the rear pipeline of the valve platform, usually a control valve group which is separated from the valve platform is adopted, steel pipes and pipe fittings are adopted to connect an oil supply P pipe, an oil return T pipe and an oil drainage L pipe of the valve platform with an A pipe and a B pipe of an outlet of the valve platform in series for welding the circular pipe, washing liquid in a turbulent state enters the oil from the P port, passes through the A pipe and the B pipe, and then passes through the T pipe and an L pipe oil return box for circularly washing the pipeline. Each valve station needs to be welded to manufacture a specific temporary pipeline, and a large amount of welding and reinstalling work can introduce new pollution, so that the flushing time is prolonged. The scheme not only consumes a large amount of labor and wastes materials, but also influences the construction period.
Disclosure of Invention
The invention aims to provide an online cleaning method for front and rear pipelines of a hydraulic valve table, so as to solve the problems. Therefore, the invention adopts the following specific technical scheme:
an on-line cleaning method for front and rear pipelines of a hydraulic valve table comprises the following steps:
the method comprises the following steps of performing modular design on a hydraulic valve platform, wherein the hydraulic valve platform can comprise a connecting block and a main pipeline flushing valve plate which can be replaced mutually, and a valve platform control valve group and a valve group flushing block which can be replaced mutually;
when a pipeline in front of the valve platform is flushed, the connecting block is replaced by the main pipeline flushing valve plate, the main pipeline flushing valve plate separates the valve platform inlet main pipeline from the valve platform control valve group, and meanwhile, the main pipeline flushing valve plate and the valve platform inlet main pipeline form a flushing loop;
after the pipeline in front of the valve platform is washed, replacing the main pipeline washing valve plate with the connecting block;
when a pipeline behind a valve table is flushed, the valve table control valve group is replaced by the valve group flushing block, and a connecting hose between the valve table control valve group and a hydraulic cylinder is disconnected from the hydraulic cylinder and is in short connection with the hydraulic cylinder to form a loop, so that the valve group flushing block, the valve table inlet main pipeline, the connecting block and the pipeline behind the valve table form a flushing loop;
and after the pipeline behind the valve table is flushed, replacing the valve group flushing block with the valve table control valve group, and restoring the connection between the hydraulic cylinder and the connecting hose.
Furthermore, the connecting block comprises three connecting pipes which are nested with each other, and the connecting pipes are U-shaped.
Furthermore, each port of the connecting block, the valve platform control valve banks, the main pipeline flushing valve plate and the valve bank flushing block is provided with a quick connector.
Further, the port of the main line flush valve plate that connects to the valve deck control valve set is blocked.
Further, the main pipeline flushing valve plate is provided with a control valve, and the control valve is configured to be capable of flushing the return pipeline or the oil drainage pipeline independently.
Further, the control valve is a three-way valve or two ball valves.
Furthermore, the valve group flushing block comprises two straight pipes and an L-shaped pipe, the two straight pipes are respectively connected with the oil supply pipeline and the oil return pipeline, one end of the L-shaped pipe is connected with the straight pipe connected with the oil return pipeline, and the other end of the L-shaped pipe is connected with the oil drainage pipeline.
Further, a connecting hose of the valve stand control valve group and the hydraulic cylinder is disconnected from the hydraulic cylinder and is short-circuited to form a loop when the valve stand control valve group and the hydraulic cylinder are flushed.
By adopting the technical scheme, the invention has the beneficial effects that: the invention can avoid the defect that temporary pipelines need to be annularly connected for flushing the pipelines in front of and behind the valve table, can complete the online flushing of the pipelines in front of and behind the valve table, greatly reduces the flushing action time, improves the working efficiency, reduces the material waste and saves the cost.
Drawings
To further illustrate the various embodiments, the present invention provides the accompanying figures. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
FIG. 1 is a flow chart of a method for on-line cleaning of the front and rear lines of a hydraulic valve stand according to the present invention;
FIG. 2 is a schematic illustration of the hydraulic valve station of the present invention in normal operation;
FIG. 3 is a schematic diagram of the hydraulic valve station of the present invention in a configuration for flushing the lines in front of the valve station;
FIG. 4 is a schematic structural view of another embodiment of the main line flush valve plate of FIG. 3;
fig. 5 is a schematic diagram of the hydraulic valve station of the present invention when flushing the lines behind the valve station.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, an on-line cleaning method for front and rear pipelines of a hydraulic valve table may include the following steps:
100. the hydraulic valve station is designed in a modular way, and as shown in fig. 2, the hydraulic valve station can comprise a connecting block 1 and a main pipeline flushing valve plate 3 which can be mutually replaced, a valve station control valve group 2 and a valve group flushing block 4 which can be mutually replaced, and the like. The connecting block 1 is connected between the valve table inlet main pipeline and the valve table control valve group 2. The main valve stand inlet line upstream of the connecting block 1 is referred to as the pre-valve stand line, and the line downstream of the valve stand control valve group 2 is referred to as the post-valve stand line. Connection block 1 may comprise three connection tubes 11a-11c for a total of six ports P1, T1, L1, L2, T2, P2. Specifically, ports P1, T1, L1 are connected to the supply line P, return line T and drain line L, respectively, of the valve station inlet main line, and L2, T2, P2 are connected to ports Y, T, P of the valve station control valve block 2, respectively, through respective lines. In this embodiment, the three connecting tubes 11a-11c of the connecting block 1 are U-shaped and nested within each other. That is, the connection pipe 11a connecting the ports P1 and P2 is outermost and longest in length; connecting tube 11b connecting ports T1 and T2 is intermediate, second in length; the connection pipe 11c connecting the ports L1 and L2 is innermost and shortest in length. The main line flushing valve plate 3 has the same ports P1, T1, L1, L2, T2, P2 as the connecting block 1, wherein the ports P1, T1, L1 of the main line flushing valve plate 3 are connected to the oil supply pipe P, the oil return pipe T and the oil drain pipe L of the valve table inlet main line, respectively, and the ports L2, T2, P2 of the main line flushing valve plate 3 are blocked. It will be appreciated that the ball valve 31 and the ball valve 32 of the main flushing valve plate 3 may also be replaced by a three-way valve 33, as shown in fig. 4.
The valve stand control valve group 2 may include a solenoid directional valve 21, a superimposed double pilot operated check valve 22, and a superimposed double check throttle valve 23. The solenoid operated directional valve 21 has a port P, T, Y which is in fluid communication with ports P2, T2, L2 of the connection block 1 respectively. The superimposed double check throttle valve 23 has ports a and B that are in fluid communication with the hydraulic cylinder 5 through respective conduits (specifically, the outlet pipe 6 and the connecting hose 7), respectively. The line to which port Y, A, B of valve station control valve set 2 is connected is the post-valve station line. The valve block flush block 4 has the same port P, T, Y, A, B as the valve station control valve block 2. The ports P and a and the ports T and B are connected by a straight pipe 41, 42, respectively, and the port Y is connected to the straight pipe 42 connecting the port T by an L-shaped pipe 43.
Preferably, to facilitate the connection, quick connectors are installed at respective ports of the connection block 1, the plurality of valve deck control valve blocks 2, the main line flushing valve plate 3 and the block flushing block 4.
200. When the pipeline in front of the valve platform is flushed, the connecting block 1 is replaced by the main pipeline flushing valve plate 3, and the main pipeline flushing valve plate 3 separates the valve platform inlet main pipeline from the valve platform control valve group and forms a flushing loop with the valve platform inlet main pipeline, as shown in fig. 3. The washing process comprises the following steps: the flushing fluid passes through the ball valve 8 on the oil supply pipe P and the port P1 of the main pipeline flushing valve plate 3, wherein one path passes through the ball valve 31 and the port T1 to the oil return pipe T, the other path passes through the ball valve 32 and the port L1 to the oil drain pipe L, and the flushing oil of the oil return pipe T and the oil drain pipe L returns to the flushing oil tank after passing through the flushing pump station filter until the oil cleanliness level in the main pipeline reaches the requirement.
300. After the pipeline in front of the valve platform is washed, the main pipeline washing valve plate 3 is replaced by the connecting block 1.
400. When the pipeline behind the valve stand is flushed, the valve stand control valve group 2 is replaced by the valve stand flushing block 4, the connecting hose 7 between the valve stand control valve group 2 and the hydraulic cylinder 5 is separated from the hydraulic cylinder 5 and is in short connection to form a loop, and the valve stand flushing block 4, the valve stand inlet main pipeline, the connecting block 1 and the pipeline behind the valve stand form a flushing loop, as shown in fig. 5. The washing process comprises the following steps: the flushing liquid passes through the ball valve 8 on the oil supply pipe P in sequence, the port P1 of the connecting block 1, the port P2 of the valve group flushing block 4, the port P and A of the connecting hose 7 and the port B of the valve group flushing block 4, passes through the port T2 and the port T1 of the connecting block 1 all the way, passes through the port L2 and the port L1 of the connecting block 1 all the way in addition, flows into the oil return pipe T and the oil drain pipe L respectively, and finally returns to flush the oil tank after flushing the filter of the pump station until the oil cleanliness grade in the pipeline reaches the requirement.
500. After the valve block rear line is flushed, the valve block flushing block is replaced with the valve block control valve block, and the connection of the hydraulic cylinder 5 to the connecting hose 7 is restored, as shown in fig. 2.
Aiming at the defect that temporary pipelines need to be annularly connected in the process of flushing the front and rear pipelines of the valve table, the invention adopts a replaceable modular connecting block and a main pipeline flushing valve plate between a main pipeline (an oil supply pipe P, an oil return pipe T and an oil drain pipe L) at the inlet of the valve table and a valve table control valve group, and can directly carry out online flushing without manufacturing the temporary pipelines. After the main pipeline is flushed and the connecting block is replaced, the control valve group is replaced into a valve group flushing valve block, and the outlet pipelines of the valve groups of each loop are sequentially flushed in a loop connection mode. This hydraulic valve platform can avoid the valve platform around the pipeline wash need the drawback of the interim pipeline of ring joint, can accomplish the online of pipeline and wash around the valve platform, and can further accomplish the online segmentation of pipeline and wash around the hydraulic valve platform, greatly reduced wash the active time, improved work efficiency, it is extravagant to reduce the material, practices thrift the cost.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. An online cleaning method for front and rear pipelines of a hydraulic valve table is characterized by comprising the following steps:
the method comprises the following steps of performing modular design on a hydraulic valve platform, wherein the hydraulic valve platform comprises a connecting block and a main pipeline flushing valve plate which can be replaced mutually, and a valve platform control valve group and a valve group flushing block which can be replaced mutually;
when a pipeline in front of the valve platform is flushed, the connecting block is replaced by the main pipeline flushing valve plate, the main pipeline flushing valve plate separates the valve platform inlet main pipeline from the valve platform control valve group, and meanwhile, the main pipeline flushing valve plate and the valve platform inlet main pipeline form a flushing loop;
after the pipeline in front of the valve platform is washed, replacing the main pipeline washing valve plate with the connecting block;
the valve group flushing block is provided with a port P, T, Y, A, B which is the same as the valve stand control valve group, ports P, T and Y are respectively communicated with corresponding ports of the connecting block in a fluid mode, ports A and B are respectively communicated with a hydraulic cylinder in a fluid mode through corresponding pipelines, ports P and A and ports T and B are respectively connected through a straight pipe, a port Y is connected with the straight pipe connected with the port T through an L-shaped pipe, when a rear pipeline of the valve stand is flushed, the valve stand control valve group is replaced by the valve group flushing block, a connecting hose between the valve stand control valve group and the hydraulic cylinder is disconnected from the hydraulic cylinder and is in short connection with the hydraulic cylinder to form a loop, and the valve group flushing block, a main inlet pipeline of the valve stand, the connecting block and the rear pipeline of the valve stand form a flushing loop;
and after the pipeline behind the valve table is flushed, replacing the valve group flushing block with the valve table control valve group, and restoring the connection between the hydraulic cylinder and the connecting hose.
2. The method of claim 1, wherein the connector block comprises three nested connector tubes, the connector tubes being U-shaped.
3. The method of claim 1, wherein each port of the connection block, the valve stack control block, the main line flush valve plate, and the valve stack flush block is provided with a quick connector.
4. The method of claim 3, wherein the ports of the main line flush valve plate to which the valve station control valve set is connected are blocked.
5. The method of claim 1, wherein the main line flush valve plate is provided with a control valve configured to enable flushing of either the return line or the drain line alone.
6. The method of claim 5, wherein the control valve is a three-way valve or two ball valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728384.9A CN113458092B (en) | 2021-06-29 | 2021-06-29 | On-line cleaning method for front and rear pipelines of hydraulic valve table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728384.9A CN113458092B (en) | 2021-06-29 | 2021-06-29 | On-line cleaning method for front and rear pipelines of hydraulic valve table |
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| Publication Number | Publication Date |
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| CN113458092A CN113458092A (en) | 2021-10-01 |
| CN113458092B true CN113458092B (en) | 2022-06-24 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100586588C (en) * | 2006-06-19 | 2010-02-03 | 上海宝冶建设有限公司 | Flushing and installing methods by using online raw liquor press pump under piping once |
| CN101637768B (en) * | 2009-08-26 | 2011-05-04 | 中国华冶科工集团有限公司 | Pipeline cleaning method |
| KR20140085731A (en) * | 2012-12-27 | 2014-07-08 | 현대중공업 주식회사 | Temporary piping rig for hydraulic system pipeline flushing |
| CN203635566U (en) * | 2013-10-30 | 2014-06-11 | 中国二十二冶集团有限公司 | Hydraulic pipeline flushing device |
| CN109365432A (en) * | 2018-12-08 | 2019-02-22 | 中国二十二冶集团有限公司 | The circulation oil flushing equipment and its flushing construction method of hydraulic system pipeline |
| CN112452961B (en) * | 2020-10-21 | 2023-12-29 | 中冶南方工程技术有限公司 | Hydraulic valve table front and rear pipeline flushing device and method convenient to operate |
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