CN102000680A - High efficiency circulating cleaning pressurization hydraulic station - Google Patents
High efficiency circulating cleaning pressurization hydraulic station Download PDFInfo
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- CN102000680A CN102000680A CN2009100087907A CN200910008790A CN102000680A CN 102000680 A CN102000680 A CN 102000680A CN 2009100087907 A CN2009100087907 A CN 2009100087907A CN 200910008790 A CN200910008790 A CN 200910008790A CN 102000680 A CN102000680 A CN 102000680A
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Abstract
The invention relates to a high efficiency circulating cleaning pressurization hydraulic station, comprising a fuel tank, a circulating cleaning pump set, multiple fuel filters and a high pressure pump set; wherein one end of the circulating cleaning pump set and one end of the high pressure pump set are respectively connected with the fuel tank, the outlet of the other end of the circulating cleaning pump set is connected with the outlet of the other end of the high pressure pump set by virtue of at least one fuel filter and is connected with one end of a pipeline to be cleaned, the other end of the pipeline to be cleaned is connected with the fuel tank by virtue of the fuel filter again, and the circulating cleaning pump set or the high pressure pump set is selected to be connected with the pipeline to be cleaned, so as to respectively realize circulating cleaning and pressure test on the pipeline. The high efficiency circulating cleaning pressurization hydraulic station of the invention has the characteristics of high flow, high filtering accuracy and good cleaning effect, self circulation can be realized, circulating cleaning and pressure test are integrated, an independent high pressure pump set is selected for pressure test, and energy saving effect is obvious.
Description
Technical field
The present invention relates to a kind of efficient circulation cleaning pressurized hydraulic station, particularly relate to a kind of efficient circulation cleaning pressurized hydraulic station that is applied to the inner cleaning of pipeline and the pipeline withstand voltage test of hydraulic system (especially new hydraulic system of installing).
Background technology
Hydraulic system is to carry out work by the hydraulic oil circulating transfer energy that is enclosed in the pipeline, if impurity is arranged sneaks in the hydraulic oil, pollute hydraulic oil, along with hydraulic oil flowing in pipeline, can pollute whole hydraulic system, cause the wearing and tearing or the bad phenomenon such as stuck of Hydraulic Elements, even cause a serious accident, influence the operate as normal of Hydraulic Elements and hydraulic system.Therefore, the cleannes of hydraulic oil are the key factors of decision hydraulic system and even the normal operation of whole production line.
Impurity such as the fragment of welding slag, metal dust, rust sheet, encapsulant and coating usually can residually be arranged in the intermediate duct of new hydraulic system of installing; Hydraulic system after work a period of time, because the flow in the intermediate duct and the change at random of pressure, intermediate duct can be subjected to hydraulic shock in various degree, and then impurity such as the oxide skin on the pipeline inner wall, welding slag are shaken, and makes it to sneak in the hydraulic oil.Thereby the cleaning degree of the intermediate duct of hydraulic system will directly have influence on the cleannes of hydraulic oil and whole hydraulic system.Therefore no matter be new hydraulic system of installing, the hydraulic system after a period of time of still working all is necessary its intermediate duct is cleaned.
In order to clean to the intermediate duct of hydraulic system with imitating, the user of the hydraulic system that has directly utilizes the main pump of hydraulic system to come the intermediate duct of hydraulic system is carried out wash cycles, but can make impurity in the pipeline seriously influence the service life of hydraulic system main pump like this, lose more than gain; Also there is the user of hydraulic system to use special-purpose wash cycles station to come the intermediate duct of hydraulic system is cleaned, but the flow at this wash cycles station is fixed, often can not satisfy the different flow requirement of cleaning at different hydraulic systems, use it for when different hydraulic system cleaned, cleaning performance is undesirable.
This shows that above-mentioned existing hydraulic system cleaning equipment obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate configuration to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of efficient circulation of new structure and clean the pressurized hydraulic station, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing hydraulic system cleaning equipment exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, clean the pressurized hydraulic station in the hope of the efficient circulation of founding a kind of new structure, can improve general existing hydraulic system cleaning equipment, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The objective of the invention is to, overcome the defective that existing hydraulic system cleaning equipment exists, and the efficient circulation that a kind of new structure is provided is cleaned the pressurized hydraulic station, technical problem to be solved is to make it have the advantages that flow is big, filtering accuracy is high, cleaning performance is good, and can carry out self-loopa, and simultaneously that wash cycles and withstand voltage test is integrated, select for use independently the high-pressure pump group to carry out withstand voltage test, energy-saving effect is remarkable, thereby is suitable for practicality more.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.Clean the pressurized hydraulic station according to a kind of efficient circulation that the present invention proposes, comprise: fuel tank, wash cycles pump group and overlap the oil filter group more, it also comprises a high-pressure pump group, one end of this wash cycles pump group and this high-pressure pump group is connected with this fuel tank respectively, the other end outlet of this wash cycles pump group links together via the other end outlet of at least one this oil filter group and this high-pressure pump group, and insert an end of a pipeline to be cleaned, the other end of this pipeline to be cleaned returns this fuel tank by this oil filter winding again, wherein, realize wash cycles and withstand voltage test respectively to this pipeline by selecting this wash cycles pump group or this high-pressure pump group to insert this pipeline to be cleaned.
Purpose of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and the other end outlet of wherein said wash cycles pump group is via linking together by a ball valve with the other end outlet of this high-pressure pump group after at least one this oil filter group.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and the other end outlet of wherein said wash cycles pump group connects this oil filter group of quadruplet successively, and its filtering accuracy is followed successively by 10 μ m, 5 μ m, 3 μ m, 3 μ m.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and wherein said oil filter group is the high-pressure filter group.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and the other end outlet of wherein said wash cycles pump group is to be connected with at least one this oil filter group after connecting an overflow valve, and the outlet of this high-pressure pump group is to be connected with this ball valve after connecting an overflow valve.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and wherein this overflow valve that is connected with this wash cycles pump group is a pilot operated compound relief valve, and this overflow valve that is connected with this high-pressure pump group is a direct-acting overflow valve.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and wherein said wash cycles pump group comprises gear pump and motor.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and wherein said high-pressure pump group comprises plunger displacement pump and motor.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and the other end outlet of wherein said wash cycles pump group directly takes back this fuel tank by a normally-closed ball valve after via at least one this oil filter group.
Aforesaid efficient circulation is cleaned the pressurized hydraulic station, and it comprises the described wash cycles pump group of two covers.
The present invention compared with prior art has tangible advantage and beneficial effect.Via as can be known above, in order to achieve the above object, the invention provides a kind of efficient circulation and clean the pressurized hydraulic station, it adopts independently wash cycles pump group that middle pipeline is cleaned, and through filtering step by step and circulating intermediate duct is cleaned up; For the bigger pipeline of caliber, when needing bigger flow just can clean up, two wash cycles pumps can be started simultaneously, carry out pipeline jointly and clean; And the outlet of high-pressure pump group is directly connected together by high-pressure ball valve with the outlet of wash cycles pump group, after cleaning is finished, open and close, can directly open high-pressure pump pipeline is carried out withstand voltage test by switching high-pressure ball valve.
By technique scheme, efficient circulation of the present invention is cleaned the pressurized hydraulic station and had following advantage and beneficial effect at least: efficient circulation of the present invention is cleaned the pressurized hydraulic station and is had the advantages that flow is big, filtering accuracy is high, cleaning performance is good, and can carry out self-loopa, simultaneously that wash cycles and withstand voltage test is integrated, select for use independently the high-pressure pump group to carry out withstand voltage test, energy-saving effect is remarkable.
In sum, efficient circulation cleaning pressurized hydraulic station owner of the present invention will be made up of four parts: fuel tank, wash cycles pump group, high-pressure pump group and oil filter group.Wash cycles pump group has the advantages that flow is big, pressure is low, and the high-pressure pump group is opposite with it, has the advantages that flow is little, pressure is high.The oil filter component is high-pressure filter group and oil return oil filter group.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram that efficient circulation of the present invention is cleaned the pressurized hydraulic station.
1: fuel tank 8.1,8.2: gear pump
9: plunger displacement pump 10.1,10.2: motor
11: motor 20.1,20.2: high-pressure ball valve
23: direct-acting overflow valve 24.1,24.2: pilot operated compound relief valve
25.1,25.2,26.1,26.2: high-pressure filter 27.1,27.2,27.3,27.4: high-pressure filter
28.1,28.2,28.3,28.4: high-pressure ball valve 29.1,29.2,29.3: the low pressure butterfly valve
30.1,30.2: oil return oil filter 18.4: the cleannes test point
40.1,40.2,40.3: heater 5.1,5.2: low pressure butterfly valve
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the efficient circulation that foundation the present invention proposes is cleaned its specific embodiment of pressurized hydraulic station, structure, feature and effect thereof, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of the specific embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Seeing also shown in Figure 1ly, is the schematic diagram that efficient circulation of the present invention is cleaned the pressurized hydraulic station.The efficient circulation of preferred embodiment of the present invention is cleaned the pressurized hydraulic station owner and will be comprised: fuel tank 1, wash cycles pump group, high-pressure pump group and oil filter group.Wherein,
Above-mentioned fuel tank 1, volume is 3500L, is mainly used to store cleaning fluid.The heater 40.1,40.2,40.3 of three 3KW is equipped with in its inside, is used for heated wash oil, makes cleaning performance reach best.Simultaneously, for making the compact conformation of system, it is convenient to change filter element, has taked the structure of putting on the fuel tank in the present embodiment.
Above-mentioned wash cycles pump group, by gear pump 8.1,8.2, motor 10.1,10.2, composition such as shaft coupling, damper two covers can be distinguished the independent wash cycles pump group structure of pipeline being implemented cleaning, and be respectively arranged with pilot operated compound relief valve 24.1,24.2 in wash cycles pump group exit, pressure by 24.1,24.2 pairs of wash cycles pump group outlets of pilot operated compound relief valve is regulated, and its maximum pressure can reach 10MPa.Wherein the maximum stream flow of single pump is 350L/min, and total flow can reach 700L/min when two pumps started simultaneously, can select single pump or double pump operation for use according to actual conditions.
Above-mentioned high-pressure pump group is made up of plunger displacement pump 9, motor 11, shaft coupling etc., and its flow is 4L/min, and outlet pressure can be regulated by the direct-acting overflow valve 23 that is arranged at the exit, and maximum pressure can reach 31.5Mpa.The high-pressure pump group can be carried out withstand voltage test to the pipeline after having cleaned.Adopt the high-pressure pump group of low discharge among the present invention, can reduce power of motor, energy-saving and cost-reducing.
Above-mentioned oil filter group is divided into high-pressure filter 25.1,25.2,26.1,26.2,27.1,27.2,27.3,27.4 and oil return oil filter 30.1,30.2.Wherein, above-mentioned high-pressure filter is divided into two groups with 25.1,26.1,27.1,27.2 quadruplets and 25.2,26.2,27.3,27.4 quadruplets respectively, and be arranged at two exits of cover wash cycles pump group after pilot operated compound relief valve 24.1,24.2 is regulated according to above-mentioned order respectively, as shown in Figure 1, and the filtering accuracy of above-mentioned every group quadruplet high-pressure filter is followed successively by 10 μ m, 5 μ m, 3 μ m, 3 μ m, can fully guarantee to enter the cleannes of the cleaning fluid of intermediate duct so at every turn, make the cleannes of intermediate duct reach requirement in the short period of time; Above-mentioned oil return oil filter 30.1,30.2 is arranged between fuel tank 1 and the intermediate duct to be cleaned, and its filtering accuracy is 10 μ m, mainly is total oil return of filtering after the hydraulic system of flowing through, and avoids bringing the impurity of intermediate duct into fuel tank 1.Be to be connected with 30.2 with two return filters 30.1 respectively with 29.3 by two low pressure butterfly valves 29.2 in the present invention, the return line that forms two parallel connections inserts fuel tank 1.Because the type selecting of oil return oil filter 30.1 and 30.2 is bigger, therefore when reality is used, only need keying by low pressure butterfly valve 29.2 or 29.3, make any cover oil return oil filter 30.1 or the whole detergent line of 30.2 accesses carry out work and all can meet the demands.Adopting two cover oil return oil filters 30.1 and 30.2 parallel connections among the present invention is because the starting stage of cleaning, impurity in the pipeline all will enter into the oil return oil filter, this moment, the oil return oil filter was than dirty fast of high-pressure filter, therefore need repeatedly more renew cartridge, when the filter core of oil filter 30.1 or 30.2 need be changed, only needing to switch low pressure butterfly valve 29.3 or 29.2 just can change under the situation of not termination of pumping, can guarantee the continuous running of system like this, make pipeline to be cleaned in the shortest time, reach the cleannes requirement.
The present invention considers the convenience of operation simultaneously for fear of the secondary pollution of fluid, and wash cycles and withstand voltage test are integrated in one.That is, the outlet of high-pressure pump group is connected together by the outlet of high-pressure ball valve 20.1,20.2 with wash cycles pump group, as shown in Figure 1.When carrying out withstand voltage test, the sebific duct that need not will to be connected with wash cycles pump group again disassembles and is connected on the high-pressure pump group, directly by closing high-pressure ball valve 28.1 or 28.3, opening high-pressure ball valve 20.1 or 20.2 just can couple together with intermediate duct, carry out the withstand voltage test of hydraulic system, easy to operate.
The outlet that efficient circulation of the present invention is cleaned the wash cycles pump group at pressurized hydraulic station directly is being connected with fuel tank 1 through passing through a normally closed high-pressure ball valve 28.2 or 28.4 behind the high-pressure filter again, open this high-pressure ball valve 28.2 or 28.4 and can utilize wash cycles pump group that Hydraulic Station itself is carried out self-loopa, thereby carry out self cleaning.
The course of work that efficient circulation of the present invention is cleaned the pressurized hydraulic station is as follows:
At first, the enough wash oil of filling in fuel tank 1 is selected to be a wash cycles pump group of unlatching or to open two wash cycles pump groups simultaneously according to the caliber size of pipeline to be cleaned and length.Then, external world's pipeline short circuit to be cleaned is become a path, an end is connected with wash cycles pump group, and the other end is connected with oil return oil filter group gets back to fuel tank 1.When selecting to use two wash cycles pump groups to clean jointly, if the caliber of pipeline to be cleaned is bigger, then the outlet with two wash cycles pump groups combines access pipeline to be cleaned, if pipeline to be cleaned is long especially, by two wash cycles pump groups and pipeline short circuit to be cleaned are formed two independently loop checking installations, again two wash cycles pump groups are opened simultaneously, clean two loops simultaneously, can save scavenging period.
After connection is finished, the inlet butterfly valve 5.1 or 5.2 of wash cycles pump group is opened; Close normally closed high-pressure ball valve 28.2 and 28.4; Open the high-pressure ball valve 28.1 or 28.3 in exit simultaneously,, then need open the high-pressure ball valve 28.1 and 28.3 in exit simultaneously this moment if select to use two wash cycles pump groups to clean jointly; Close the high-pressure ball valve 20.1 and 20.2 in the exit of high-pressure pump group; Open the low pressure butterfly valve 29.1 and 29.2 or 29.3 of Hydraulic Station oil return porch, make whole loop unimpeded.At last, precursor overflow valve 24.1 or 24.2 regulators are all unclamped counterclockwise,, then the regulator of pilot operated compound relief valve 24.1 and 24.2 all need be unclamped counterclockwise this moment if select to use two wash cycles pump groups to clean jointly.
After finishing above operation, just can ON cycle scavenging pump group, like this, wash cycles pump group will be wash oil from fuel tank 1 sucking-off, make it enter pipeline to be cleaned by the filter set that filtering accuracy is respectively 10 μ m, 5 μ m, 3 μ m, 3 μ m successively, regulate pilot operated compound relief valve 24.1 or 24.2 clockwise, pressure is raise gradually, when pressure no longer raises, the oil circuit that whole pipeline to be washed is described is unimpeded, fixes behind the half-turn that again regulator of pilot operated compound relief valve 24.1 or 24.2 turned clockwise.Clean jointly if select to use two wash cycles pump groups, then need to regulate clockwise simultaneously pilot operated compound relief valve 24.1 and 24.2, pressure is raise gradually, when pressure no longer raises, fix behind the half-turn that again regulator of pilot operated compound relief valve 24.1 and 24.2 turned clockwise.At this moment, the wash oil whole pipeline of will flowing through is got back to fuel tank 1 by oil return oil filter 30.1 or 30.2 then.So circulation is until reaching till cleannes test point 18.4 detects required oil cleanliness.If the cleannes of detected fluid can not reach requirement always, and cleannes no longer improve, can be by changing the filter core of wash cycles pump group exit oil filter group, and a period of time of reruning like this will reach needed oil cleanliness requirement very soon.
After cleaning is finished, close the high-pressure ball valve 28.1 or 28.3 in wash cycles pump group and its exit, clean jointly if select to use two wash cycles pump groups, the high-pressure ball valve 28.1 and 28.3 that need close the exit this moment simultaneously, open the high-pressure ball valve 20.1 or 20.2 of the outlet of high-pressure pump group, direct-acting overflow valve 23 regulators are all unclamped counterclockwise, then, open the high-pressure pump group, regulating direct-acting overflow valve 23 raises pressure gradually, until reaching desired pneumatic test pressure, pipeline is carried out withstand voltage test.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art are not in breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. an efficient circulation is cleaned the pressurized hydraulic station, comprise: fuel tank (1), wash cycles pump group (8,10) and overlap oil filter group (25 more, 26,27,30), it is characterized in that it also comprises a high-pressure pump group (9,11), this wash cycles pump group (8,10) and this high-pressure pump group (9,11) a end is connected with this fuel tank (1) respectively, this wash cycles pump group (8,10) other end outlet is via at least one this oil filter group (25,26,27) with this high-pressure pump group (9,11) other end outlet links together, and insert an end of a pipeline to be cleaned, the other end of this pipeline to be cleaned takes back this fuel tank (1) by this oil filter group (30) again, wherein by selecting this wash cycles pump group (8,10) or this high-pressure pump group (9,11) insert this pipeline to be cleaned, realize wash cycles and withstand voltage test respectively this pipeline.
2. efficient circulation according to claim 1 is cleaned the pressurized hydraulic station, it is characterized in that the other end outlet of wherein said wash cycles pump group (8,10) links together by a ball valve (20.1,20.2) via the other end outlet of at least one this oil filter group (25,26,27) back with this high-pressure pump group (9,11).
3. efficient circulation according to claim 2 is cleaned the pressurized hydraulic station, the other end outlet that it is characterized in that wherein said wash cycles pump group (8,10) connects this oil filter group of quadruplet (25,26,27) successively, and its filtering accuracy is followed successively by 10 μ m, 5 μ m, 3 μ m, 3 μ m.
4. efficient circulation according to claim 3 is cleaned the pressurized hydraulic station, it is characterized in that wherein said oil filter group (25,26,27) is the high-pressure filter group.
5. efficient circulation according to claim 2 is cleaned the pressurized hydraulic station, the other end outlet that it is characterized in that wherein said wash cycles pump group (8,10) is to be connected with at least one this oil filter group (25,26,27) after connecting an overflow valve (24.1,24.2), and the outlet of this high-pressure pump group (9,11) is to be connected with this ball valve (20.1,20.2) after connecting an overflow valve (23).
6. efficient circulation according to claim 5 is cleaned the pressurized hydraulic station, it is characterized in that this overflow valve (24.1,24.2) that wherein is connected with this wash cycles pump group (8,10) is a pilot operated compound relief valve, this overflow valve (23) that is connected with this high-pressure pump group (9,11) is a direct-acting overflow valve.
7. efficient circulation according to claim 1 is cleaned the pressurized hydraulic station, it is characterized in that wherein said wash cycles pump group (8,10) comprises gear pump (8.1,8.2) and motor (10.1,10.2).
8. efficient circulation according to claim 1 is cleaned the pressurized hydraulic station, it is characterized in that wherein said high-pressure pump group (9,11) comprises plunger displacement pump (9) and motor (11).
9. efficient circulation according to claim 1 is cleaned the pressurized hydraulic station, it is characterized in that the other end outlet of wherein said wash cycles pump group (8,10) is directly taking back this fuel tank (1) via at least one this oil filter group (25,26,27) back by a normally-closed ball valve (28).
10. clean the pressurized hydraulic station according to the described efficient circulation of arbitrary claim in the claim 1 to 9, it is characterized in that it comprises two cover described wash cycles pump groups (8,10).
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| CN2009100087907A CN102000680B (en) | 2009-09-03 | 2009-09-03 | High efficiency circulating cleaning pressurization hydraulic station |
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| CN2009100087907A CN102000680B (en) | 2009-09-03 | 2009-09-03 | High efficiency circulating cleaning pressurization hydraulic station |
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| CN102000680B CN102000680B (en) | 2012-07-11 |
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| CN105927621A (en) * | 2016-07-04 | 2016-09-07 | 烟台裕海流量仪表有限公司 | Full-automatic multi-pipeline serial washing and filtering device |
| CN106594003A (en) * | 2016-12-05 | 2017-04-26 | 山西太钢不锈钢股份有限公司 | Removing and discharging device and method for hydraulic oil cylinder |
| CN108816974A (en) * | 2018-09-03 | 2018-11-16 | 张家港韶液液压技术有限公司 | The hydraulic system of scouring stage |
| CN108816974B (en) * | 2018-09-03 | 2023-12-29 | 张家港韶液液压技术有限公司 | Hydraulic system of flushing station |
| CN109047198A (en) * | 2018-10-22 | 2018-12-21 | 福建新继船舶服务有限公司 | A kind of hydraulic pipeline flushing device |
| CN111774381A (en) * | 2020-03-18 | 2020-10-16 | 华电电力科学研究院有限公司 | Automatic purging device for coal-fired power plant hearth pressure switch sampling pipe and control method thereof |
| CN111774381B (en) * | 2020-03-18 | 2023-12-05 | 华电电力科学研究院有限公司 | Automatic purging device for sampling tube of hearth pressure switch of coal-fired power plant and control method of automatic purging device |
| CN112628240A (en) * | 2020-12-10 | 2021-04-09 | 重庆铁马工业集团有限公司 | Method for improving installation and adjustment quality of hydraulic system |
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