CN105675219A - Ship pipeline pressure test system - Google Patents
Ship pipeline pressure test system Download PDFInfo
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- CN105675219A CN105675219A CN201610182017.2A CN201610182017A CN105675219A CN 105675219 A CN105675219 A CN 105675219A CN 201610182017 A CN201610182017 A CN 201610182017A CN 105675219 A CN105675219 A CN 105675219A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Abstract
The invention relates to a ship pipeline pressure test system, which comprises a first water inlet channel and a second water inlet channel communicated with a water storage tank, a water outlet channel communicated with a ship pipeline, a low pressure pump communicated with the first water inlet channel, a high pressure pump communicated with the second water inlet channel, a parallel connection channel connected between the outlet of the low pressure pump and the outlet of the high pressure pump, a serial connection channel connected between the outlet of the low pressure pump and the inlet of the high pressure pump, and a switching mechanism for realizing serial conduction or parallel conduction between the low pressure pump and the high pressure pump, wherein the parallel connection channel is communicated with the water outlet channel. According to the ship pipeline pressure test system, the design is simple and delicate; parallel connection between the low pressure pump and the high pressure pump is realized through the switching mechanism to meet requirements of large water amount during a water filling stage, serial connection between the low pressure pump and the high pressure pump is also realized through the switching mechanism to meet requirements of the pressure during a sealing detection stage, the pressure test operation is further simplified, and the pressure test time is shortened.
Description
Technical field
The present invention relates to pipeline leak hunting technology field, be specifically related to a kind of ship pipeline pressure testing system.
Background technology
Pipeline pressure test pump be generally used for brand-new pipeline and repair after the inspection of hermetic seal of pipeline. Pipeline generally includes two stages in leakage test process: (1) water-filling stage, and the water yield required supplementation with in pipeline in this process is big, but pressure requirements is not high. (2) the sealing detection stage, the output needed in this stage pipeline is little, but requires pressure of supply water stable in high-order district.
The pressure testing of pipeline would generally adopt special hydraulic test pump; and most of hydraulic test pump broadly falls into reciprocating plunger pump; it is characterized in high-lift low discharge; and ship pipeline mostly is mesolow pipeline; because pipe volume is big; using reciprocating plunger pump then to cause the pressure testing duration long, staff's activity duration is long, and corresponding night safe is also low. Existing flow when also having the centrifugal pump group adopting transformation to meet ship pipeline pressure testing and lift demand, this mode greatly reduces the pressure testing time, improves pressure testing efficiency, but centrifugal pump group operate inconvenient and job insecurity when pipeline pressure test.
Authorization Notice No. is the Chinese utility model patent " marine duct pressure tester " of CN200941078Y (application number is 200620045248.0), wherein in disclosed scheme, two in parallel two pipelines are respectively mounted two stage column plug pump and centrifugal pump, and also accumulator is set between exhalant canal and two stage column plug pump, this marine duct pressure tester can open two stage column plug pump and centrifugal pump to increase discharge in the water-filling stage simultaneously, but the sealing detection stage then need accumulator and two stage column plug pump with the use of, so, this marine duct pressure tester is in use, centrifugal pump and accumulator can not be fully utilized owing to it acts on restriction, add the manufacturing cost of this marine duct pressure tester.
Summary of the invention
The technical problem to be solved is to provide a kind of for above-mentioned prior art can either conveniently realize low-lift pump and high-pressure pump is connected in parallel to meet the big yield requirement in water-filling stage, can conveniently realize again low-lift pump and high-pressure pump is connected in series to meet the pressure requirements in sealing detection stage, low-lift pump and high-pressure pump can be fully used, and then simplification pressure testing operates and shortens the ship pipeline pressure testing system of pressure testing time.
This invention address that the technical scheme that the problems referred to above adopt is: a kind of ship pipeline pressure testing system, including the first intake tunnel being connected with water storage box, the second intake tunnel and the exhalant canal that is connected with ship pipeline, it is characterised in that: include
Low-lift pump, entrance is connected with described first intake tunnel;
High-pressure pump, entrance is connected with described second intake tunnel;
It is connected in parallel passage, is connected between described low pressure delivery side of pump and high pressure delivery side of pump and is connected with described exhalant canal;
It is connected in series passage, is connected between described low pressure delivery side of pump and the entrance of high-pressure pump;
Switching mechanism, when the pressure in marine piping is less than setting pressure, conducting is connected in parallel passage and closedown is connected in series passage so that low-lift pump and high-pressure pump are in parallel communication state; When the pressure in marine piping is be more than or equal to setting pressure, simultaneously turns on and be connected in parallel passage and be connected in series passage so that low-lift pump and high-pressure pump are in serial communication state.
Simply, described switching mechanism includes
First electrodynamic valve, is connected in series on passage and is located close to the exit position of described low-lift pump described in being connected to;
Second electrodynamic valve, is connected on described second intake tunnel;
Described first electrodynamic valve and the second electrodynamic valve select to be turned on and off, thus being connected in parallel low-lift pump and high-pressure pump between water storage box and ship pipeline, or it is connected in series low-lift pump and high-pressure pump, relative to the described flow direction being connected in parallel in passage, described be connected in parallel on passage to be positioned at described in be connected in series passage the rear of entrance be provided with the first check-valves, the exit of described high-pressure pump is provided with the second check-valves.
For the convenient intake pressure understanding ship pipeline, described in be connected in parallel on passage also bypass have TCH test channel, described TCH test channel is provided with pressure transducer.
Automatically controlling ship pipeline pressure testing system is realized in order to convenient, also include control chamber, described control chamber includes casing, it is arranged on the power line in casing, the transformator being connected with power line, the control circuit plate that is arranged in casing and be connected with described transformator and be arranged on the switching device on described casing, described control circuit plate respectively with described switching device, low-lift pump, high-pressure pump, first electrodynamic valve, second electrodynamic valve, pressure transducer is connected, and then control the start and stop of low-lift pump and high-pressure pump, the first electrodynamic valve can be controlled according to the force value that pressure transducer is measured simultaneously, being turned on and off of second electrodynamic valve.
Preferably, described control circuit plate having control circuit, described control circuit includes commutator, controller, the first relay of parallel communication is realized for low-lift pump and high-pressure pump, the second relay of serial communication is realized for low-lift pump and high-pressure pump, for controlling the first catalyst that low-lift pump starts and stops, for controlling the second catalyst that high-pressure pump starts and stops, for opening the 6th relay of the first electrodynamic valve, for monitoring the first travel switch of the first electrodynamic valve open mode, for closing the 7th relay of the first electrodynamic valve, for monitoring the second travel switch of the first electrodynamic valve closed mode, for opening the 8th relay of the second electrodynamic valve, third trip for monitoring the second electrodynamic valve open mode switchs, for closing the 9th relay of the second electrodynamic valve, for monitoring the fourth line journey switch of the second electrodynamic valve closed mode, the first timer for the timing low-lift pump working time, the second timer for the timing high-pressure pump working time,
The input of described commutator is connected with the outfan of described transformator;
Described pressure transducer, described switching device connect between the common port of described controller and signal input tube foot respectively;
The coil of described first relay and the coil of the second relay are connected between signal output pin and the negative pole of rectifier output end of described controller;
The normally opened contact of described first relay, the second relay normally opened contact be connected in series with the first contactor coil being connected in parallel and the second contactor coil respectively, and it is connected in series the normally-closed contact of the normally closed contact of the normal closed contact of the 6th relay, the normally-closed contact of the 7th relay, the 8th relay, the 9th relay respectively, thus forming the working control circuit of low-lift pump and high-pressure pump, the working control circuit of described low-lift pump and high-pressure pump is connected between the outfan of described transformator;
The normally opened contact of described first catalyst connects between described low-lift pump and power line, and the normally opened contact of described second catalyst connects between described high-pressure pump and power line; The described normally opened contact of the 6th relay, the normally opened contact of the 7th relay are connected in parallel between described first electrodynamic valve and power line; The described normally opened contact of the 8th relay, the normally opened contact of the 9th relay are connected in parallel between described second electrodynamic valve and power line;
The normally-closed contact of the coil of the 7th relay, the normally-closed contact of the second travel switch and the coil of the 8th relay being connected in series, third trip switch that are connected in series is connected in series with the normally opened contact of described first relay after being connected in parallel again, thus forming parallel communication control circuit, described parallel communication control circuit is connected between the outfan of described transformator;
The normally-closed contact of the coil of the 6th relay, the normally-closed contact of the first travel switch and the coil of the 9th relay being connected in series, fourth line journey switch that are connected in series is connected in series with the normally opened contact of described second relay after being connected in parallel again, thus forming serial communication control circuit, described serial communication control circuit is connected between the outfan of described transformator;
The normally opened contact of described first catalyst and the coils connected in series of the first timer connect to form low-lift pump timing circuit, and described low-lift pump timing circuit is connected between the outfan of described transformator;
The normally opened contact of described second catalyst and the coils connected in series of the second timer connect to form high-pressure pump timing circuit, and described high-pressure pump timing circuit is connected between the outfan of described transformator.
In order to realize normal operation control and debugging control, described switching device includes starting switch and shutdown switch, and described starting switch and shutdown switch are connected between the common port of described controller and signal input tube foot;
Described casing is additionally provided with a mode conversion switch, one end of first normally opened contact of described mode conversion switch is connected to the positive pole of described commutator, the other end of the first normally opened contact of described mode conversion switch is connected in series a hand switch, the one end of the signal output pin that described hand switch is connected controller with the coil of described first catalyst and the coil of the second catalyst respectively is connected, and described hand switch is arranged on described casing;
First normally-closed contact of described mode conversion switch is connected between the positive pole of described commutator and the signal output pin of described controller for the signal output of the signal output pin disconnecting described controller, second normally-closed contact of described mode conversion switch is connected in series between the common port of described controller and described starting switch, and the second normally opened contact of described mode conversion switch is connected in the two ends of described shutdown switch in parallel.
Safely, described power line is connected to an earth leakage protective device, described earth leakage protective device has auxiliary contact, for judging the phase sequence relay of Phase-sequence Fault and for judging the overload relay of motor overload fault;
The normally opened contact of described auxiliary contact and the coils connected in series of described phase sequence relay are connected between signal output pin and the negative pole of commutator of described controller;
The coil of described overload relay is connected between signal output pin and the negative pole of commutator of described controller;
The normally opened contact of described phase sequence relay and the normally-closed contact of overload relay are connected in series between the positive pole of described commutator and described mode conversion switch.
Safely, described casing is provided with phase sequence mistake display lamp and overload light, described overload light is connected in the two ends of the coil of described overload relay in parallel, and the normally-closed contact of described phase sequence mistake display lamp and described auxiliary contact is connected in series between signal output pin and the negative pole of commutator of described controller.
Safely, the water-shortage protection device being connected with described controller it is additionally provided with in described water storage box, described water-shortage protection device has liquid-level switch and hydropenia auxiliary relay, and the normally opened contact of described liquid-level switch and the coils connected in series of described hydropenia auxiliary relay are connected between signal output pin and the negative pole of commutator of described controller;
Being provided with hydropenia display lamp on described casing, the normally-closed contact of described hydropenia display lamp and described hydropenia auxiliary relay is connected in series between signal output pin and the negative pole of commutator of described controller;
The normally opened contact of described hydropenia auxiliary relay and the normally-closed contact of the normally opened contact of described phase sequence relay, overload relay are connected in series between the positive pole of described commutator and described mode conversion switch.
Easily, described casing being additionally provided with display, described display is connected with described controller.
Compared with prior art, it is an advantage of the current invention that: this ship pipeline pressure testing system devises the passage that is connected in series being connected in parallel passage and serial communication low-lift pump and high-pressure pump of parallel communication low-lift pump and high-pressure pump cleverly, and opening and closing to coordinate and realize being connected in parallel passage or being connected in series the conducting of passage by the first electrodynamic valve and the second electrodynamic valve. Thus in the water-filling stage of ship pipeline pressure testing process, make low-lift pump and high-pressure pump in parallel to water filling in ship pipeline, disclosure satisfy that big yield requirement, and in the sealing detection stage of ship pipeline pressure testing process so that low-lift pump and high-pressure pump tandem working, to meet the pressure requirements supplied water in ship pipeline, so add water or on the basis of pressure-producing part additionally not increasing other, can completing the whole process of ship pipeline pressure testing, and the working time is short, work efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of ship pipeline pressure testing system in the embodiment of the present invention.
Fig. 2 is the main circuit of ship pipeline pressure testing system in the embodiment of the present invention.
Fig. 3 is the control circuit of ship pipeline pressure testing system in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As it is shown in figure 1, a kind of ship pipeline pressure testing system in the present embodiment is arranged between water storage box 1 and ship pipeline, for pressurizeing to water filling in ship pipeline, to realize the pressure detecting in ship pipeline, thus judging the sealing of ship pipeline.
This ship pipeline pressure testing system includes first intake tunnel the 21, second intake tunnel 22, exhalant canal 3, low-lift pump 4, high-pressure pump 5, is connected in parallel passage 6, is connected in series passage 7, switching mechanism, TCH test channel 10, pressure transducer 101 and control chamber 200.
First intake tunnel 21 is connected with water storage box 1 respectively with the entrance of the second intake tunnel 22, and the outlet of the first intake tunnel 21 simultaneously is connected with the entrance of low-lift pump 4, and the outlet of the second intake tunnel 22 is connected with the entrance of high-pressure pump 5. Water-shortage protection device 100 it is additionally provided with in water storage box 1.
It is connected in parallel passage 6 and is connected between the outlet of low-lift pump 4 and the outlet of high-pressure pump 5, and this is connected in parallel passage 6 and is connected with the entrance of exhalant canal 3, exhalant canal 3 in the present embodiment arranges two, and the outlet of each exhalant canal 3 is connected with marine piping. For the convenient intake pressure understanding ship pipeline, it is connected in parallel passage 6 and also bypasses and be connected to a TCH test channel 10, this TCH test channel 10 is provided with pressure transducer 101. Pressure transducer 101 detects the pressure being connected in parallel in passage 6 in real time, namely the pressure in marine piping is indirectly detected, in the sealing detection stage, if the pressure of pressure transducer 101 detection is held essentially constant, then illustrate that marine piping is not revealed, sealing is good, if situation about declining occurs in the pressure of pressure transducer 101 detection, then illustrates that the sealing of marine piping is damaged to some extent. According to safety need, this TCH test channel 10 can also be installed relief valve 102 and atmospheric valve 103.
It is connected in series passage 7 to be connected between the outlet of low-lift pump 4 and the entrance of high-pressure pump 5.
Switching mechanism in the present embodiment includes the first electrodynamic valve 8 and the second electrodynamic valve the 9, first check-valves 41 and the second check-valves 45. Wherein the first electrodynamic valve 8 is connected to the exit position being connected in series on passage 7 and being located close to described low-lift pump 4. Second electrodynamic valve 9 is then connected on the second intake tunnel 22. First electrodynamic valve 8 and the second electrodynamic valve 9 can select to be turned on and off, thus being connected in parallel low-lift pump 4 and high-pressure pump 5 between water storage box 1 and ship pipeline, or are connected in series low-lift pump 4 and high-pressure pump 5. When the first electrodynamic valve 8 turn on, the second electrodynamic valve 9 close time, then be connected in series passage 7 and be connected in parallel passage 6 and be interconnected, now, low-lift pump 4 and high-pressure pump 5 between water storage box 1 and ship pipeline in series connection. When the first electrodynamic valve 8 close, the second electrodynamic valve 9 turn on time, then be connected in parallel passage 6 and turn on, be connected in series passage 7 simultaneously and close, now, low-lift pump 4 and high-pressure pump 5 between water storage box 1 and ship pipeline in parallel connection.
First check-valves 41 relative to the described flow direction being connected in parallel in passage 6, is arranged on the rear of the entrance being connected in series passage 7 described in being connected in parallel on passage 6 to be positioned at. The exit of high-pressure pump 5 then installed by second check-valves 51. Under the effect of the first check-valves 41 and the second check-valves 51, it can be avoided that be connected in series passage 7 and situation about flowing backwards occurs under pressure for the water that is connected in parallel in passage 6, water can also be placed simultaneously and passage 6 circulates and affect work efficiency being connected in series passage 7 and being connected in parallel.
As shown in Figures 2 and 3, automatically controlling ship pipeline pressure testing system is realized in order to convenient, the present embodiment uses control chamber 200 obtain the pressure data of pressure transducer 101 detection, respectively low-lift pump 4, high-pressure pump the 5, first electrodynamic valve the 8, second electrodynamic valve 9 are controlled simultaneously.
This control chamber 200 includes casing; it is arranged on the display 201 on casing; it is arranged on phase sequence mistake display lamp HL2, the overload light HL4 on casing and hydropenia display lamp HL3; it is arranged on the mode conversion switch SA1 on casing, hand switch SA2; it is arranged on the power line in casing; connect earth leakage protective device on the power line; the transformator T being connected with power line, is arranged in casing and the control circuit plate that is connected with described transformator T-phase and be arranged on the switching device on described casing.
Having control circuit on control circuit plate, this control circuit includes commutator AD, controller PLC, the first relay K A1 of parallel communication is realized for low-lift pump 4 and high-pressure pump 5, the second relay K A2 of serial communication is realized for low-lift pump 4 and high-pressure pump 5, for controlling the first catalyst KM1 that low-lift pump 4 starts and stops, for controlling the second catalyst KM2 that high-pressure pump 5 starts and stops, for opening the 6th relay K M6 of the first electrodynamic valve 8, for monitoring the first travel switch DF1 of the first electrodynamic valve 8 open mode, for closing the 7th relay K A7 of the first electrodynamic valve 8, for monitoring the second travel switch DF2 of the first electrodynamic valve 8 closed mode, for opening the 8th relay K A8 of the second electrodynamic valve 9, third trip for monitoring the second electrodynamic valve 9 open mode switchs DF3, for closing the 9th relay K A9 of the second electrodynamic valve 9, for monitoring the fourth line journey switch DF4 of the second electrodynamic valve 9 closed mode, the first timer LS1 for timing low-lift pump 4 working time, the second timer LS2 for timing high-pressure pump 5 working time. its middle controller PLC can adopt existing PLC.
The input of commutator AD is connected with the outfan of transformator T.
Pressure transducer 101, switching device connect between the common port of controller PLC and signal input tube foot respectively. The force value that pressure transducer 101 detects is transported in controller PLC, then controller PLC controls this force value and is shown on display 201, switches ship pipeline pressure testing system according to the force value in pipeline simultaneously and is operated in the different stages. As when force value is not up to 1.3Mpa, then controlled ship pipeline pressure testing system and be operated in the water-filling stage, now make low-lift pump 4 and high-pressure pump 5 used in parallel. And after force value reaches 1.3Mpa, then controlling ship pipeline pressure testing system is operated in the sealing test stage, low-lift pump 4 and high-pressure pump 5 series connection is now made to use.
The outfan of transformator T is connected in series in an a light switch SA3 and illuminating lamp HL1, a this light switch SA3 and illuminating lamp HL1 is arranged on casing, in use, it is operated by light switch SA3 and lights and close illuminating lamp HL1, to facilitate operator to be controlled operation in dark environment.
The coil of the first relay K A1 and the coil of the second relay K A2 are connected between the signal output pin of controller PLC and the negative pole of commutator AD outfan, the two ends of the first relay K A1 coil and the second relay K A2 coil are connected to display lamp HL5 and HL6, display lamp HL5 and HL6 is arranged on casing, thus light when the first relay K A1 coil, the second relay K A2 coil conduction, and then the duty that instruction ship pipeline pressure testing system is current.
The normally opened contact of the first relay K A1, the second relay K A2 normally opened contact be connected with the first catalyst KM1 coil being connected in parallel and the second catalyst KM2 coils connected in series respectively, and it is connected in series the normally-closed contact of the 6th normal for relay K M6 closed contact, the normally-closed contact of the 7th relay K A7, the 8th normally closed for relay K A8 contact, the 9th relay K A9 respectively, thus forming low-lift pump 4 and the working control circuit of high-pressure pump 5, the working control circuit of low-lift pump 4 and high-pressure pump 5 is connected between the outfan of transformator T.
The normally opened contact of the first catalyst KM1 connects between low-lift pump 4 and power line, and the normally opened contact of the second catalyst KM2 connects between high-pressure pump 5 and power line. The normally opened contact of the 6th relay K M6, the 7th relay K A7 normally opened contact be connected in parallel between the first electrodynamic valve 8 and power line. The normally opened contact of the 8th relay K A8, the 9th relay K A9 normally opened contact be connected in parallel between the second electrodynamic valve 9 and power line.
The normally-closed contact of the coil of the 7th relay K A7, the normally-closed contact of the second travel switch DF2 and the coil of the 8th relay K A8 being connected in series, third trip switch DF3 that are connected in series is connected in series with the normally opened contact of the first relay K A1 after being connected in parallel again, thus forming parallel communication control circuit, parallel communication control circuit is connected between the outfan of transformator T.
The normally-closed contact of the coil of the 6th relay K M6, the normally-closed contact of the first travel switch DF1 and the coil of the 9th relay K A9 being connected in series, fourth line journey switch DF4 that are connected in series is connected in series with the normally opened contact of the second relay K A2 after being connected in parallel again, thus forming serial communication control circuit, serial communication control circuit is connected between the outfan of transformator T.
When the force value of pressure transducer 101 detection is lower than 1.3Mpa, controller PLC controls the first relay K A1 and obtains electric work, and the display lamp at the coil two ends being connected to the first relay K A1 is lighted, and instruction ship pipeline pressure testing system is in the water-filling stage. The normally opened contact of the first relay K A1 also respective closed, to realize being connected in parallel of low-lift pump 4 and high-pressure pump 5.
After the normally opened contact Guan Bi of the first relay K A1, parallel communication control circuit turns on, then the coil of the 7th relay K A7 and the eight relay K A8 obtains electric, the normally opened contact Guan Bi of corresponding 7th relay K A7 and the eight relay K A8, now the first electrodynamic valve 8 electric must carry out closing motion, and the second electrodynamic valve 9 electric must carry out opening action. After the first electrodynamic valve 8 action puts in place, then corresponding second travel switch DF2 touches the first electrodynamic valve 8 action, thus the normally-closed contact of the second travel switch DF2 is opened, then the 7th relay K A7 and the eight relay K A8 coil losing electricity, the normally opened contact of corresponding 7th relay K A7 and the eight relay K A8 disconnects, the first electrodynamic valve 8 and the second electrodynamic valve 9 dead electricity stopping action. Now the first electrodynamic valve 8 is closed, and the second electrodynamic valve 9 is in open mode, and corresponding parallel communication path turns on, and serial communication path cannot turn on, then low-lift pump 4 and high-pressure pump 5 are in parallel connection between water storage box 1 and ship pipeline.
In the process of the first electrodynamic valve 8 and the second electrodynamic valve 9 action, owing to the coil of the 7th relay K A7 and the eight relay K A8 obtains electric, then the normally-closed contact of the 7th relay K A7 and the eight relay K A8 disconnects, even if the corresponding normally opened contact at the first relay K A1 closes, the working control circuit of low-lift pump 4 and high-pressure pump 5 also cannot turn on, namely the first catalyst KM1 and the second catalyst KM2 coil cannot obtain electric, the normally opened contact of corresponding first catalyst KM1 and the second contact cannot turn on, and low-lift pump 4 and high-pressure pump 5 are in the state of quitting work. And after the first electrodynamic valve 8 and the second electrodynamic valve 9 action put in place, 7th relay K A7 and the eight relay K A8 coil losing electricity, owing to the first relay K A1 is not operating, then the coil of the 6th relay K M6 and the nine relay K A9 also must not be electric, now the 6th relay K M6, the 7th relay K A7, the 8th relay K A8 and the nine relay K A9 normally-closed contact be in closure state, owing to the normally opened contact of the first relay K A1 closes, then the coil of the first catalyst KM1 and the second catalyst KM2 must conduct. The normally opened contact Guan Bi of corresponding first catalyst KM1 and the second catalyst KM2, low-lift pump 4 and high-pressure pump 5 start work. Now low-lift pump 4 and high-pressure pump 5 are simultaneously to water filling in ship pipeline, and the water-filling to be rapidly completed ship pipeline works.
When the force value of pressure transducer 101 detection reaches 1.3Mpa, controller PLC controls the first relay K A1 dead electricity and quits work, and the second relay K A2 obtains electric starting working, the display lamp at the coil two ends being now connected to the second relay K A2 is lighted, and instruction ship pipeline pressure testing system is in the sealing detection stage. The normally opened contact of the second relay K A2 also respective closed, to realize being connected in series of low-lift pump 4 and high-pressure pump 5.
After the normally opened contact Guan Bi of the second relay K A2, serial communication control circuit turns on, then the coil of the 6th relay K M6 and the nine relay K A9 obtains electric, the normally opened contact Guan Bi of corresponding 6th relay K M6 and the nine relay K A9, now the first electrodynamic valve 8 electric must carry out opening action, and the second electrodynamic valve 9 electric must carry out closing motion. after the first electrodynamic valve 8 action puts in place, then corresponding first travel switch DF1 touches the first electrodynamic valve 8 action, thus the normally-closed contact of the first travel switch DF1 is opened, then the 6th relay K M6 and the nine relay K A9 coil losing electricity, the normally opened contact of corresponding 6th relay K M6 and the nine relay K A9 disconnects, the first electrodynamic valve 8 and the second electrodynamic valve 9 dead electricity stopping action. now the first electrodynamic valve 8 is in open mode, second electrodynamic valve 9 is closed, corresponding serial communication path turns on, and parallel communication path cannot turn on, then low-lift pump 4 and high-pressure pump 5 are in parallel connection by serial communication path and parallel communication path between water storage box 1 and ship pipeline, water in water storage box 1 flows to high-pressure pump 5 by serial communication path under the effect of low-lift pump 4, ship pipeline is flowed to then through parallel communication path under the effect of high-pressure pump 5, in this process, under discharge, but the pressure of low-lift pump 4 and high-pressure pump 5 all acts in ship pipeline, meet the continuous high-pressure requirement in sealing test stage.
In the process of the first electrodynamic valve 8 and the second electrodynamic valve 9 action, owing to the coil of the 6th relay K M6 and the nine relay K A9 obtains electric, then the normally-closed contact of the 6th relay K M6 and the nine relay K A9 disconnects, even if the corresponding normally opened contact at the second relay K A2 closes, the working control circuit of low-lift pump 4 and high-pressure pump 5 also cannot turn on, namely the first catalyst KM1 and the second catalyst KM2 coil cannot obtain electric, the normally opened contact of corresponding first catalyst KM1 and the second contact cannot turn on, and low-lift pump 4 and high-pressure pump 5 are in the state of quitting work. And after the first electrodynamic valve 8 and the second electrodynamic valve 9 action put in place, 6th relay K M6 and the nine relay K A9 coil losing electricity, owing to the second relay K A2 is not operating, then the coil of the 7th relay K A7 and the eight relay K A8 also must not be electric, now the 6th relay K M6, the 7th relay K A7, the 8th relay K A8 and the nine relay K A9 normally-closed contact be in closure state, owing to the normally opened contact of the second relay K A2 closes, then the coil of the first catalyst KM1 and the second catalyst KM2 must conduct. The normally opened contact Guan Bi of corresponding first catalyst KM1 and the second catalyst KM2, low-lift pump 4 and high-pressure pump 5 start work. Now low-lift pump 4 and high-pressure pump 5 continue voltage supply to ship pipeline simultaneously, and the sealing detection to complete ship pipeline works. If pressure maintains essentially in fixation pressure value, then show the good airproof performance of ship pipeline. If pressure is gradually reduced, then showing that ship pipeline has leakage situation, now, controller PLC according to the force value output alarm signal of pressure transducer 101 detection, can be arranged corresponding alarm and receive this alarm signal and report to the police on casing.
The normally opened contact of the first catalyst KM1 and the coils connected in series of the first timer LS1 connect to form low-lift pump 4 timing circuit, and low-lift pump 4 timing circuit is connected between the outfan of transformator T. The normally opened contact of the second catalyst KM2 and the coils connected in series of the second timer LS2 connect to form high-pressure pump 5 timing circuit, and high-pressure pump 5 timing circuit is connected between the outfan of transformator T. So can add up the working time of low-lift pump 4 and high-pressure pump 5 easily, under the control of controller PLC, it is possible to be shown on display 201 working time of low-lift pump 4 and high-pressure pump 5.
In order to realize normal operation control and debugging control, switching device includes starting switch SB1 and shutdown switch SB2, starting switch SB1 and shutdown switch SB2 and is connected between the common port of controller PLC and signal input tube foot. When normally using, press starting switch SB1, then this ship pipeline pressure testing system starts work automatically, presses shutdown switch SB2, then this ship pipeline pressure testing system quits work.
On casing, one end of the first normally opened contact SA1-1 of mode conversion switch SA1 is connected to the positive pole of commutator AD, the other end of the first normally opened contact SA1-1 of mode conversion switch SA1 is connected in series a hand switch SA2, the one end of the signal output pin that hand switch SA2 is connected controller PLC with the coil of the coil of the first catalyst KM1 and the second catalyst KM2 respectively is connected, and hand switch SA2 is arranged on casing.
The first normally-closed contact SA1-2 of mode conversion switch SA1 is connected between the positive pole of commutator AD and the signal output pin of controller PLC and exports for the signal of the signal output pin of breaking controller PLC, the second normally-closed contact SA1-3 of mode conversion switch SA1 is connected in series between the common port of controller PLC and starting switch SB1, and the second normally opened contact SA1-4 of mode conversion switch SA1 is connected in the two ends of shutdown switch SB2 in parallel.
In the debugging stage of this ship pipeline pressure testing system, then can adjust debugging mode by mode conversion switch SA1. Now, the first normally opened contact SA1-1 Guan Bi of mode conversion switch SA1, the first normally-closed contact SA1-2 of mode conversion switch SA1 disconnects, and the second normally-closed contact SA1-3 of mode conversion switch SA1 disconnects, the second normally opened contact SA1-4 Guan Bi of mode conversion switch SA1.
After the first normally opened contact SA1-1 Guan Bi of mode conversion switch SA1, it is possible to be operated by hand switch SA2 and control the first relay K A1 and the conducting of the second relay K A2 coil, and then realize the action of ship pipeline pressure testing system is debugged.
After the first normally-closed contact SA1-2 of mode conversion switch SA1 disconnects, the control to the first relay K A1 and the second relay K A2 of corresponding controller PLC exports Signal Fail.
After the second normally-closed contact SA1-3 of mode conversion switch SA1 disconnects, the starting switch SB1 of respective switch device lost efficacy, and after the second normally opened contact SA1-4 Guan Bi of mode conversion switch SA1, the shutdown switch SB2 of respective switch device lost efficacy.
Power line is connected to an earth leakage protective device, earth leakage protective device has auxiliary contact KD, for judging the 4th relay K A4 of Phase-sequence Fault and for judging the 3rd relay K A3 of motor overload fault.
The normally opened contact of auxiliary contact KD and the coils connected in series of the 4th relay K A4 are connected between the signal output pin of controller PLC and the negative pole of commutator AD.
The coil of the 3rd relay K A3 is connected between the signal output pin of controller PLC and the negative pole of commutator AD.
The normally opened contact of the 4th relay K A4 and the normally-closed contact of the 3rd relay K A3 are connected in series between the positive pole of commutator AD and mode conversion switch SA1.
Casing is provided with phase sequence mistake display lamp HL2 and overload light HL4, overload light HL4 is connected in the two ends of the coil of the 3rd relay K A3 in parallel, and the normally-closed contact of phase sequence mistake display lamp HL2 and auxiliary contact KD is connected in series between the signal output pin of controller PLC and the negative pole of commutator AD.
In the operating circuit of low-lift pump 4 and high-pressure pump 5, when phase sequence is correct, then the normally opened contact of auxiliary contact KD is kept closed, the normally-closed contact of auxiliary contact KD is off accordingly, now the coil of the 4th relay K A4 obtains electric, and mode conversion switch SA1 place circuit tends to remain on. And phase sequence mistake display lamp HL2 is without being lit. After mistake occurs in phase sequence, the normally opened contact of auxiliary contact KD disconnects, and the normally-closed contact of auxiliary contact KD correspondingly closes, now the coil losing electricity of the 4th relay K A4, and mode conversion switch SA1 place circuit disconnects, and this ship pipeline pressure testing system quits work. And phase sequence mistake display lamp HL2 place line conduction, phase sequence mistake display lamp HL2 lights prompting staff's phase sequence error message.
In the operating circuit of low-lift pump 4 and high-pressure pump 5, when there is overload, the coil of the 3rd relay K A3 obtains electric, and correspondingly overload light HL4 lights to point out overload situations. The normally-closed contact of the 3rd relay K A3 disconnects simultaneously, and now mode conversion switch SA1 place circuit disconnects, and this ship pipeline pressure testing system quits work.
The water-shortage protection device 100 being connected with controller PLC it is additionally provided with in water storage box 1; the coils connected in series of normally opened contact and the 5th relay K A5 that water-shortage protection device 100 has liquid-level switch KS and the five relay K A5, liquid-level switch KS is connected between the signal output pin of controller PLC and the negative pole of commutator AD. The normally opened contact of the 5th relay K A5 and the normally-closed contact of the normally opened contact of the 4th relay K A4, the 3rd relay K A3 are connected in series between the positive pole of commutator AD and mode conversion switch SA1. Being provided with hydropenia display lamp HL3 on casing, the normally-closed contact of hydropenia display lamp HL3 and the five relay K A5 is connected in series between the signal output pin of controller PLC and the negative pole of commutator AD.
When liquid-level switch KS detects the liquid level in water storage box 1 lower than critical liquid level, the normally opened contact self-closing state of liquid-level switch KS becomes open mode, then the coil of the 5th relay K A5 disconnects, correspondingly, the normally-closed contact Guan Bi of the 5th relay K A5, hydropenia display lamp HL3 lights, to point out hydropenia information. Simultaneously the 5th relay K A5 normally opened contact disconnect, mode conversion switch SA1 place circuit disconnects, and this ship pipeline pressure testing system quits work.
Claims (10)
1. a ship pipeline pressure testing system, including the first intake tunnel (21) being connected with water storage box (1), the second intake tunnel (22) and the exhalant canal (3) that is connected with ship pipeline, it is characterised in that: include
Low-lift pump (4), entrance is connected with described first intake tunnel (21);
High-pressure pump (5), entrance is connected with described second intake tunnel (22);
It is connected in parallel passage (6), is connected between the outlet of described low-lift pump (4) and the outlet of high-pressure pump (5) and is connected with described exhalant canal (3);
It is connected in series passage (7), is connected between the outlet of described low-lift pump (4) and the entrance of high-pressure pump (5);
Switching mechanism, when the pressure in marine piping is less than setting pressure, conducting is connected in parallel passage (6) and closedown is connected in series passage (7) so that low-lift pump and high-pressure pump are in parallel communication state; When the pressure in marine piping is be more than or equal to setting pressure, simultaneously turns on and be connected in parallel passage (6) and be connected in series passage (7) so that low-lift pump and high-pressure pump are in serial communication state.
2. ship pipeline pressure testing system according to claim 1, it is characterised in that: described switching mechanism includes
First electrodynamic valve (8), is connected in series on passage (7) described in being connected to;
Second electrodynamic valve (9), is connected on described second intake tunnel (22);
Described first electrodynamic valve (8) and the second electrodynamic valve (9) select to be turned on and off, thus being connected in parallel low-lift pump (4) and high-pressure pump (5) between water storage box (1) and ship pipeline, or it is connected in series low-lift pump (4) and high-pressure pump (5), relative to the described flow direction being connected in parallel in passage (6), described be connected in parallel on passage (6) to be positioned at described in be connected in series passage (7) the rear of entrance be provided with the first check-valves (41), the exit of described high-pressure pump (5) is provided with the second check-valves (51).
3. ship pipeline pressure testing system according to claim 2, it is characterized in that: described in be connected in parallel on passage (6) also bypass have TCH test channel (10), described TCH test channel (10) is provided with pressure transducer (101).
4. ship pipeline pressure testing system according to claim 3, it is characterized in that: also include control chamber (200), described control chamber (200) includes casing, it is arranged on the power line in casing, the transformator (T) being connected with power line, the control circuit plate that is arranged in casing and be connected with described transformator (T) and be arranged on the switching device on described casing, described control circuit plate respectively with described switching device, low-lift pump (4), high-pressure pump (5), first electrodynamic valve (8), second electrodynamic valve (9), pressure transducer (101) is connected, and then control the start and stop of low-lift pump (4) and high-pressure pump (5), the first electrodynamic valve (8) can be controlled according to the force value that pressure transducer (101) are measured simultaneously, being turned on and off of second electrodynamic valve (9).
5. ship pipeline pressure testing system according to claim 4, it is characterized in that: described control circuit plate has control circuit, described control circuit includes commutator (AD), controller (PLC), first relay (KA1) of parallel communication is realized for low-lift pump (4) and high-pressure pump (5), second relay (KA2) of serial communication is realized for low-lift pump (4) and high-pressure pump (5), for controlling the first catalyst (KM1) that low-lift pump (4) starts and stops, for controlling the second catalyst (KM2) that high-pressure pump (5) starts and stops, for opening the 6th relay (KM6) of the first electrodynamic valve (8), for monitoring first travel switch (DF1) of the first electrodynamic valve (8) open mode, for closing the 7th relay (KA7) of the first electrodynamic valve (8), for monitoring second travel switch (DF2) of the first electrodynamic valve (8) closed mode, for opening the 8th relay (KA8) of the second electrodynamic valve (9), third trip for monitoring the second electrodynamic valve (9) open mode switchs (DF3), for closing the 9th relay (KA9) of the second electrodynamic valve (9), fourth line journey for monitoring the second electrodynamic valve (9) closed mode switchs (DF4), the first timer (LS1) for timing low-lift pump (4) working time, the second timer (LS2) for timing high-pressure pump (5) working time,
The input of described commutator (AD) is connected with the outfan of described transformator (T);
Described pressure transducer (101), described switching device connect between common port and the signal input tube foot of described controller (PLC) respectively;
The coil of described first relay (KA1) and the coil of the second relay (KA2) are connected between the signal output pin of described controller (PLC) and the negative pole of commutator (AD) outfan;
The normally opened contact of described first relay (KA1), the normally opened contact of the second relay (KA2) is connected with the first catalyst (KM1) coil being connected in parallel and the second catalyst (KM2) coils connected in series respectively, and it is connected in series the closed contact that the 6th relay (KM6) is normal respectively, the normally-closed contact of the 7th relay (KA7), the contact that 8th relay (KA8) is normally closed, the normally-closed contact of the 9th relay (KA9), thus forming low-lift pump (4) and the working control circuit of high-pressure pump (5), the working control circuit of described low-lift pump (4) and high-pressure pump (5) is connected between the outfan of described transformator (T),
The normally opened contact of described first catalyst (KM1) connects between described low-lift pump (4) and power line, and the normally opened contact of described second catalyst (KM2) connects between described high-pressure pump (5) and power line; The described normally opened contact of the 6th relay (KM6), the normally opened contact of the 7th relay (KA7) are connected in parallel between described first electrodynamic valve (8) and power line; The described normally opened contact of the 8th relay (KA8), the normally opened contact of the 9th relay (KA9) are connected in parallel between described second electrodynamic valve (9) and power line;
The normally-closed contact of the coil of the 7th relay (KA7), the normally-closed contact of the second travel switch (DF2) and the coil of the 8th relay (KA8) being connected in series, third trip switch (DF3) that are connected in series is connected in series with the normally opened contact of described first relay (KA1) after being connected in parallel again, thus forming parallel communication control circuit, described parallel communication control circuit is connected between the outfan of described transformator (T);
The normally-closed contact of the coil of the 6th relay (KM6), the normally-closed contact of the first travel switch (DF1) and the coil of the 9th relay (KA9) being connected in series, fourth line journey switch (DF4) that are connected in series is connected in series with the normally opened contact of described second relay (KA2) after being connected in parallel again, thus forming serial communication control circuit, described serial communication control circuit is connected between the outfan of described transformator (T);
The normally opened contact of described first catalyst (KM1) and the coils connected in series of the first timer (LS1) connect to form low-lift pump (4) timing circuit, and described low-lift pump (4) timing circuit is connected between the outfan of described transformator (T);
The normally opened contact of described second catalyst (KM2) and the coils connected in series of the second timer (LS2) connect to form high-pressure pump (5) timing circuit, and described high-pressure pump (5) timing circuit is connected between the outfan of described transformator (T).
6. ship pipeline pressure testing system according to claim 5, it is characterized in that: described switching device includes between common port and the signal input tube foot that starting switch (SB1) and shutdown switch (SB2), described starting switch (SB1) and shutdown switch (SB2) are connected to described controller (PLC);
Described casing is additionally provided with a mode conversion switch (SA1), one end of first normally opened contact (SA1-1) of described mode conversion switch (SA1) is connected to the positive pole of described commutator (AD), the other end of first normally opened contact (SA1-1) of described mode conversion switch (SA1) is connected in series a hand switch (SA2), the one end of the signal output pin that described hand switch (SA2) is connected controller (PLC) with the coil of described first catalyst (KM1) and the coil of the second catalyst (KM2) respectively is connected, described hand switch (SA2) is arranged on described casing,
First normally-closed contact (SA1-2) of described mode conversion switch (SA1) is connected between the positive pole of described commutator (AD) and the signal output pin of described controller (PLC) for the signal output of the signal output pin disconnecting described controller (PLC), second normally-closed contact (SA1-3) of described mode conversion switch (SA1) is connected in series between the common port of described controller (PLC) and described starting switch (SB1), and second normally opened contact (SA1-4) of described mode conversion switch (SA1) is connected in the two ends of described shutdown switch (SB2) in parallel.
7. ship pipeline pressure testing system according to claim 6, it is characterized in that: described power line is connected to an earth leakage protective device described earth leakage protective device having auxiliary contact (KD), for judging the 4th relay (KA4) of Phase-sequence Fault and for judging the 3rd relay (KA3) of motor overload fault;
The normally opened contact of described auxiliary contact (KD) and the coils connected in series of described 4th relay (KA4) are connected between the signal output pin of described controller (PLC) and the negative pole of commutator (AD);
The coil of described 3rd relay (KA3) is connected between the signal output pin of described controller (PLC) and the negative pole of commutator (AD);
The described normally opened contact of the 4th relay (KA4) and the normally-closed contact of the 3rd relay (KA3) are connected in series between the positive pole of described commutator (AD) and described mode conversion switch (SA1).
8. ship pipeline pressure testing system according to claim 7, it is characterized in that: described casing is provided with phase sequence mistake display lamp (HL2) and overload light (HL4), described overload light (HL4) is connected in the two ends of the coil of described 3rd relay (KA3) in parallel, and the normally-closed contact of described phase sequence mistake display lamp (HL2) and described auxiliary contact (KD) is connected in series between the signal output pin of described controller (PLC) and the negative pole of commutator (AD).
9. ship pipeline pressure testing system according to claim 7, it is characterized in that: in described water storage box (1), be additionally provided with the water-shortage protection device (100) being connected with described controller (PLC), described water-shortage protection device (100) has liquid-level switch (KS) and the 5th relay (KA5), and the normally opened contact of described liquid-level switch (KS) and the coils connected in series of described 5th relay (KA5) are connected between the signal output pin of described controller (PLC) and the negative pole of commutator (AD);
Being provided with hydropenia display lamp (HL3) on described casing, the normally-closed contact of described hydropenia display lamp (HL3) and described 5th relay (KA5) is connected in series between the signal output pin of described controller (PLC) and the negative pole of commutator (AD);
Normally opened contact and the described normally opened contact of the 4th relay (KA4), the normally-closed contact of the 3rd relay (KA3) of described 5th relay (KA5) are connected in series between the positive pole of described commutator (AD) and described mode conversion switch (SA1).
10. the ship pipeline pressure testing system according to claim 4～9 any claim, it is characterised in that: being additionally provided with display (201) on described casing, described display is connected with described controller (PLC).
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| CN105675219B (en) | 2018-02-09 |
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Address after: 316100 Mazhi Island, Shenjiamen, Putuo District, Zhoushan City, Zhejiang Province Patentee after: Wanbang shipbuilding (Zhoushan) Co.,Ltd. Address before: 316100 No.28, Mazhi West Road, Shenjiamen, Putuo District, Zhoushan City, Zhejiang Province Patentee before: ZHOUSHAN IMC-YONGYUE SHIPYARD & ENGINEERING Co.,Ltd. |