CN204663534U - A kind of slurry shield machine washing pressure Force control system - Google Patents
A kind of slurry shield machine washing pressure Force control system Download PDFInfo
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- CN204663534U CN204663534U CN201520384012.9U CN201520384012U CN204663534U CN 204663534 U CN204663534 U CN 204663534U CN 201520384012 U CN201520384012 U CN 201520384012U CN 204663534 U CN204663534 U CN 204663534U
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Abstract
The utility model provides a kind of slurry shield machine washing pressure Force control system, the air pressure-retaining system, the liquid level adjusting part that comprise PLC, are connected by control circuit with PLC and adjusting part of intaking, described air pressure-retaining system, liquid level adjusting part are all connected with water pot with water inlet adjusting part, and the delivery port of water pot is connected to several terminals; Delivery port and the booster water pump unit of water pot are all connected with terminal pipeline; Liquid-level switch comprises at least two liquid-level switches being positioned at different uneven; Air pressure-retaining system comprises air inlet adjustment valve, exhaust regulating valve and pressure sensor; Terminal pipeline comprises the flow meter be connected on pipeline, electrical ball valve, one way valve, manual ball valve and terminal ball valve.The application keeps the outlet pressure of water pot by air pressure-retaining system, makes the pressure of supply water of flush water not by the impact of consumption change, effectively prevents pressure of supply water to fluctuate.
Description
Technical field
The utility model relates to shield machine technical field, especially, relates to a kind of slurry shield machine washing pressure Force control system.
Background technology
Slurry shield machine applies a lot of shield machine types in current subway tunnel, and it has very high Land-Subsidence Control precision, and its maximum feature is transported to outside tunnel by the dregs that cutterhead excavates by hydraulic fill pipeline system.The hydraulic fill pipeline system of slurry shield machine is also circulation system, and it forms primarily of inlet pipe road, plasma discharge pipeline, by-pass line and other subsidiary conduits.Hydraulic fill pipeline is furnished with valve, slush pump, detecting element etc., wherein ball valve usage quantity is maximum, and particularly specification is the ball valve of more than DN200.
Due to the design feature of ball valve, larger hoop space is there is between ball valve core and valve body, in ball valve use procedure particularly in opening-closing process, mud in pipeline often enters in the hoop space of ball valve, if released not in time or wash away, the solid impurity entrained by mud will precipitate very soon and accumulate, the normal keying acquired a certain degree hindering ball valve, if generation consolidation, even make ball valve completely cannot action.Therefore, it is very necessary and important for rinsing ball valve, and backwashing manner mainly adopts water under high pressure.
Due to ball valve One's name is legion (the especially major diameter slurry shield that hydraulic fill pipeline system is installed, quantity is many, specification is large), its opening and closing time of the ball valve of diverse location and rule constantly change along with the driving state of slurry shield machine, and this causes the washing water quantity fluctuation of hydraulic fill pipeline rinsing needed for ball valve larger.
The flushing water water system used at present is not generally equipped with water pot, and any place's ball valve needs flushing all to need to start booster water pump, and this flushing water way of supplying water has following shortcoming: 1) booster pump frequent starting, affects its application life; 2) in certain working time section, booster pump work total time is long; 3) metered flow of booster pump is often greater than amount of water required when single ball valve rinses, and the mode pressure release of current employing overflow is not only wasted water but also waste electricity; 4) pressure of supply water fluctuates huge along with the change of flushing water consumption, affects scouring effect and easily causes mud dregs to remain in ball valve, affecting ball valve and open and close.
Utility model content
The utility model object is to provide a kind of slurry shield machine washing pressure Force control system, with solve booster pump frequent starting, pressure of supply water along with flushing water consumption change and the huge technical problem that fluctuates.
For achieving the above object, the utility model provides a kind of slurry shield machine washing pressure Force control system, the air pressure-retaining system, the liquid level adjusting part that comprise PLC, are connected by control circuit with PLC and adjusting part of intaking, described air pressure-retaining system, liquid level adjusting part are all connected with water pot with water inlet adjusting part, and the delivery port of water pot is connected to several terminals containing ball valve needing to use described flushing water;
Described air pressure-retaining system comprises air inlet adjustment valve, exhaust regulating valve and pressure sensor, and described air inlet adjustment valve, exhaust regulating valve are arranged on admission line and extract duct respectively, and described admission line and extract duct communicate with water pot inside; Pressure sensor is arranged on the top of the highest high-order liquid-level switch place horizontal plane;
Described liquid level adjusting part is positioned at water pot side, comprises at least one high-order liquid-level switch and at least one low level liquid-level switch of being positioned at different level height;
Described water inlet adjusting part comprises into water manual ball valve, the first one way valve and booster water pump unit, and described booster water pump unit is connected to water pot by inlet pipeline, and described water inlet manual ball valve, the first one way valve are arranged on inlet pipeline.
Preferably, described terminal comprises the flow meter be connected on flushing line, electrical ball valve, the second one way valve, manual ball valve and terminal ball valve; Described flushing line is communicated with water pot.
Preferably, described air pressure-retaining system also comprises valve positioner, and described valve positioner is connected with air inlet adjustment valve, exhaust regulating valve, pressure sensor.
Preferably, admission line is arranged air inlet manual ball valve, extract duct is arranged exhaust manual ball valve.
Preferably, at water pot top area mounting safety valve.
Preferably, the main conduit of described flushing line arranges electromagnetic flowmeter.
This application provides a kind of slurry shield machine, described slurry shield machine contains washing pressure Force control system described above.
The utility model has following beneficial effect:
1, between PLC and terminal pipeline, arrange the water pot for storing flushing water, wash water can directly be derived from water pot, not only decreases the booster water pump number of starts, and decreases the waste of electric power and flush water; Such as, when not arranging water pot, when arbitrary ball valve needs to rinse, (no matter the washing water quantity of needs is how many) all will start booster water pump, and because water pot self has certain moisture storage capacity and constant pressure (being maintained by pressurizer) after installing water pot, the ball valve relying on the water storage in water pot can meet certain frequency rinses demand.
2, keep the outlet pressure of water pot by air pressure-retaining system, make the pressure of supply water of flush water by the impact of consumption change, pressure stability, the pressure of supply water effectively preventing from flush water consumption from change causing fluctuates;
3, the electromagnetic valve that ball valve replaces routine is moved in the electricity consumption of terminal pipeline, and adds manual ball valve on the pipeline of electrical ball valve rear portion, improves the reliability of pipe-line system.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is embodiment one structure chart of the utility model preferred embodiment;
Fig. 2 is embodiment two structure chart of the utility model preferred embodiment;
Wherein, 1, PLC,
2, air pressure-retaining system, 21, air inlet adjustment valve, 22, exhaust regulating valve, 23, pressure sensor, 24, admission line, 25, extract duct, 26, valve positioner, 27, air inlet manual ball valve, 28, exhaust manual ball valve;
3, liquid level adjusting part, 31, high-order liquid-level switch, 32, low level liquid-level switch;
4, to intake adjusting part, 41, water inlet manual ball valve, the 42, first one way valve, 43, booster water pump unit, 44, inlet pipeline;
5, water pot, 51, safety valve; 52, water outlet manual ball valve,
6, terminal, 61, flushing line, 62, flow meter, 63, electrical ball valve, the 64, second one way valve, 65, terminal manual ball valve, 66, terminal ball valve, 67, electromagnetic flowmeter.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can limit according to claim and cover is implemented.
See Fig. 1, a kind of slurry shield machine washing pressure Force control system, the air pressure-retaining system 2, the liquid level adjusting part 3 that comprise PLC 1, are connected by control circuit with PLC 1 and adjusting part 4 of intaking, described air pressure-retaining system 2, liquid level adjusting part 3 are all connected with water pot 5 with water inlet adjusting part 4, the delivery port of water pot 5 is connected to several terminals 6, and the water facilitated the use in water pot cleans terminal pipeline.
Described air pressure-retaining system 2 comprises air inlet adjustment valve 21, exhaust regulating valve 22 and pressure sensor 23, described air inlet adjustment valve 21, exhaust regulating valve 22 are arranged on admission line 24 and extract duct 25 respectively, and described admission line 24 and extract duct 25 communicate with water pot 5 inside; Pressure sensor 23 is arranged on the top of the highest high-order liquid-level switch 31 place horizontal plane.
Air pressure-retaining system 2 can also comprise valve positioner 26, and described valve positioner 26 is connected with air inlet adjustment valve 21, exhaust regulating valve 22, pressure sensor 23, manages this three.Admission line 24 is arranged air inlet manual ball valve 27, extract duct 25 is arranged exhaust manual ball valve 28, to control the folding of admission line 24 and extract duct 25.
Described liquid level adjusting part 3 is positioned at water pot 5 side, comprises at least one high-order liquid-level switch 31 and at least one low level liquid-level switch 32 of being positioned at different level height, detects multiple fluid level face respectively.Such as, arrange height two liquid-level switches, when liquid level in water pot attains to a high place liquid-level switch 31 position, this liquid-level switch sends information, and PLC sends the work that instruction stops booster water pump unit to add water in water pot; When liquid level in water pot reaches low level liquid-level switch 32 position, this liquid-level switch sends information, and PLC sends the work that instruction unlatching booster water pump unit adds water in water pot.
Namely high-order liquid-level switch 31 between the summit of water pot and two-third point, can be in going up most in 1/3 region of water pot.
Pressure sensor 23 can be arranged on the top of the liquid-level switch being in highest order, the real-time pressure born with the water obtained in water pot, confirms whether water can smooth and easyly flow out from water pot outlet.
Described water inlet adjusting part 4 comprises into water manual ball valve 41, first one way valve 42, booster water pump unit 43, and described booster water pump unit 43 is connected to water pot 5 by inlet pipeline 44, and described water inlet manual ball valve 41, one way valve 42 are arranged on inlet pipeline 44.First one way valve 42 ensures that the water in water pot 5 can not pour in down a chimney in booster water pump unit 43; And guarantee to be not activated period at booster water pump unit 43, the pressure only relying on water pot 5 can keep the constant pressure of whole flushing pipe.
The delivery port of water pot 5 and booster water pump unit 43 all carry out pipeline with terminal 6 and are connected, so that when needed, jointly can be supplied water to pipe-line system by water pump and water pot.Also can, according to the control of PLC 1, any one pipe-line system be selected to supply water.The pressure of supply water of pipe-line system is generally more suitable between 8-20Bar.
Can at the top area mounting safety valve 51 of water pot 5.Safety valve mainly plays the effect of protection water pot; reason is as follows: when pressure sensor causes pressure measxurement inaccurate because of fault; the signal of PLC mistake can be passed to; now air inlet adjustment valve 21 may continue to water pot inflating pressure; and exhaust regulating valve 22 may be closed; such water pot air pressure can be more and more higher, exceedes tank body bearing capacity.Therefore, a tank body safety valve must be arranged protect.Water outlet manual ball valve 52 can be installed, to control outlet pipeline at the bottom section of water pot 5.
Described terminal 6 comprises the flow meter 62 be connected on flushing line 61, electrical ball valve 63, second one way valve 64, manual ball valve 65 and terminal ball valve 66; Described flushing line 66 is communicated with water pot 5.The main conduit of described flushing line 61 can also arrange electromagnetic flowmeter 67, detect the flush water flow of main conduit consumption in real time and reach PLC 1.Electromagnetic flowmeter can be inserted electromagnet flow meter.
For realizing the flushing water Stress control of terminal, the application also provides a kind of slurry shield machine washing pressure force control method, comprises step:
A, before system starts, set the pressurize value of valve positioner 24 and the release pressure of safety valve 51, regulate the aperture of the electrical ball valve 63 on the flushing line 61 connecting terminal 6, maintenance manual ball valve (27,28), electrical ball valve 63 are all in closed condition, manual ball valve (41,52,65) is in open mode
B, startup booster water pump unit 43 start water-filling in inlet pipeline 44 and water pot 5;
C, when in water pot 5, liquid level reaches liquid-level switch 31 position, liquid-level switch sends information, and PLC 1 sends instruction and stops booster water pump unit 43, then opens manual ball valve (27,28), start air pressure-retaining system, system initial state is ready;
D, terminal ball valve 66 need cleaning time, before terminal ball valve 66 action, first open electrical ball valve 63 rinsed by flushing line 61 pairs of terminal ball valves 66, terminal ball valve 66 action stop after closing electrical ball valve 63 again.
Pressure of supply water on flushing line 61 controls between 8 to 20Bar.
Continual rinsing, when in water pot 6, liquid level is reduced to low level liquid-level switch less than 32, PLC 1 starts booster water pump unit 43, and booster water pump unit 43 starts water-filling in water pot 6, until liquid level arrives the position of high-order liquid-level switch 31 in water pot 6.
The visible following examples of detailed description of the invention.
Embodiment one: as shown in Figure 1, system initial state regulates: the setting pressurize value (namely requiring the pressure value that pressure-retaining system controls) of valve positioner 26 and the release pressure of safety valve 51 before system starts, regulate the aperture of the electrical ball valve 63 on terminal flushing line 61, keep manual ball valve 27, 28 are in closed condition, electrical ball valve 63 is in closed condition, manual ball valve 41, 65 are in open mode, then starting booster water pump unit 43 starts toward washing away water-filling in pipeline and water pot 5, when liquid level in water pot attains to a high place liquid-level switch 31 position, liquid-level switch sends information, PLC sends instruction and stops booster water pump unit, then manual ball valve 27 is opened, 28, start air pressure-retaining system, system initial state is ready.
Valve rinses state: when the terminal ball valve 66 on terminal flushing line 61 needs to rinse (as carrying out switch motion), before terminal ball valve 66 action, first open electrical ball valve 63 pairs of terminal ball valves 66 rinse, after terminal ball valve 66 action stops, closing electrical ball valve 63 again, the flushing work of this terminal ball valve 66 stops immediately.
When carrying out terminal ball valve 66 and rinsing, as long as the liquid level of water pot 5 is not less than low level liquid-level switch 32, booster water pump unit 43 can not start, and only rely on water pot 5 to supply water.
When liquid level in water pot is reduced to low level liquid-level switch less than 32, PLC starts booster water pump unit 43 immediately, and water pump starts water-filling in water pot 5 until liquid level arrives the position of high-order liquid-level switch 31 in water pot 5.When electrical ball valve 63 or electromagnetic flowmeter 67 or terminal ball valve 66 break down need on-line maintenance time, manual ball valve 65 of closing a terminal, other branch lines still can normally wash away simultaneously.
Embodiment two:
As the further improvement of embodiment one, the main conduit between the first one way valve 42 and terminal flushing line 61 adds an electromagnetic flowmeter 67.At pipe-line system duration of work, electromagnetic flowmeter detects the flush water flow of main conduit consumption in real time and reaches PLC 1.Under valve flushing state, when the ball valve quantity of washing away is more thus when causing instantaneous flush water consumption to exceed the setting value in control program, PLC 1 starts booster water pump unit 43, is jointly supplied water to pipe-line system by water pump and water pot simultaneously.The program is particularly suitable for a lot of situation of terminal flushing line 61 quantity (the flushing pipe system as on major diameter slurry shield).
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a slurry shield machine washing pressure Force control system, it is characterized in that, the air pressure-retaining system (2), the liquid level adjusting part (3) that comprise PLC (1), are connected by control circuit with PLC (1) and adjusting part (4) of intaking, described air pressure-retaining system (2), liquid level adjusting part (3) are all connected with water pot (5) with water inlet adjusting part (4), and the delivery port of water pot (5) is connected to several terminals (6) containing ball valve needing to use described flushing water;
Described air pressure-retaining system (2) comprises air inlet adjustment valve (21), exhaust regulating valve (22) and pressure sensor (23), described air inlet adjustment valve (21), exhaust regulating valve (22) are arranged on admission line (24) and extract duct (25) respectively, and described admission line (24) and extract duct (25) communicate with water pot (5) inside; Pressure sensor (23) is arranged on the top of the highest high-order liquid-level switch (31) place horizontal plane;
Described liquid level adjusting part (3) is positioned at water pot (5) side, comprises at least one high-order liquid-level switch (31) and at least one low level liquid-level switch (32) of being positioned at different level height;
Described water inlet adjusting part (4) comprises into water manual ball valve (41), the first one way valve (42) and booster water pump unit (43), described booster water pump unit (43) is connected to water pot (5) by inlet pipeline (44), and described water inlet manual ball valve (41), the first one way valve (42) are arranged on inlet pipeline (44).
2. control system according to claim 1, it is characterized in that, described terminal (6) comprises the flow meter (62) be connected on flushing line (61), electrical ball valve (63), the second one way valve (64), manual ball valve (65) and terminal ball valve (66); Described flushing line (61) is communicated with water pot (5).
3. control system according to claim 1, it is characterized in that, described air pressure-retaining system (2) also comprises valve positioner (26), and described valve positioner (26) is connected with air inlet adjustment valve (21), exhaust regulating valve (22), pressure sensor (23).
4. control system according to claim 1, is characterized in that, admission line (24) is arranged air inlet manual ball valve (27), extract duct (25) is arranged exhaust manual ball valve (28).
5. control system according to claim 1, is characterized in that, at water pot (5) top area mounting safety valve (51).
6. control system according to claim 1, is characterized in that, the main conduit of described flushing line (61) arranges electromagnetic flowmeter (67).
7. a slurry shield machine, is characterized in that, described slurry shield machine is containing, for example the washing pressure Force control system according to any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520384012.9U CN204663534U (en) | 2015-06-04 | 2015-06-04 | A kind of slurry shield machine washing pressure Force control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520384012.9U CN204663534U (en) | 2015-06-04 | 2015-06-04 | A kind of slurry shield machine washing pressure Force control system |
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| CN204663534U true CN204663534U (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847369A (en) * | 2015-06-04 | 2015-08-19 | 中国铁建重工集团有限公司 | Slurry shield tunneling machine flushing water pressure control system and control method |
| CN111472796A (en) * | 2020-05-15 | 2020-07-31 | 上海隧道工程有限公司 | Remote control system for central flushing of slurry shield cutter head and construction method thereof |
-
2015
- 2015-06-04 CN CN201520384012.9U patent/CN204663534U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847369A (en) * | 2015-06-04 | 2015-08-19 | 中国铁建重工集团有限公司 | Slurry shield tunneling machine flushing water pressure control system and control method |
| CN111472796A (en) * | 2020-05-15 | 2020-07-31 | 上海隧道工程有限公司 | Remote control system for central flushing of slurry shield cutter head and construction method thereof |
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Address after: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: China Railway Construction Heavy Industry Group Co., Ltd. Address before: 410100 No. 88 Dongqi Road, Jingkai District, Changsha City, Hunan Province Patentee before: China Railway Construction Heavy Industry Co.,Ltd. |