CN211733960U - Positive-pressure explosion-proof monitoring device for total residual oxidant in ship ballast water - Google Patents
Positive-pressure explosion-proof monitoring device for total residual oxidant in ship ballast water Download PDFInfo
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- CN211733960U CN211733960U CN201922051525.9U CN201922051525U CN211733960U CN 211733960 U CN211733960 U CN 211733960U CN 201922051525 U CN201922051525 U CN 201922051525U CN 211733960 U CN211733960 U CN 211733960U
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Abstract
The utility model discloses an explosion-proof monitoring devices of total residual oxidant malleation of ship ballast water, it possesses the explosion-proof function of malleation, adopt for lasting the explosion-proof form of type that sweeps, can incessant continuous gas feed, the work heat of malleation intracavity dress component can be taken away along with the gas circuit, fine heat dissipation function has, and only reach the time of taking a breath after the regulation, the automatic power transmission of side ability, and there is height, the automatic acousto-optic warning of low pressure and the automatic outage of opening the door, safety chain protection such as urgent manual outage, and this device can carry out sample monitoring to one or more sampling point through the switching of pneumatic diaphragm pump and sample pipeline solenoid valve, and can adjust the TRO value in the ballast water through main control system when ballast and uninstallation, control.
Description
Technical Field
The utility model belongs to the technical field of ship ballast water technique and specifically relates to a ship ballast water total residual oxidant malleation explosion-proof monitoring devices is related to.
Background
Ship ballast water refers to water and suspended matters added to a ship to control the transverse inclination, longitudinal inclination, draft, stability or stress of the ship, and often takes invasive aquatic organisms to a new environment, thereby destroying the normal survival of a new environment bio-chain, and in order to prevent potential destructive influence caused by the diffusion of harmful aquatic organisms in the ship ballast water, the management and control problems of the ship ballast water are solved, and the International Maritime Organization (IMO) passes the international convention for controlling and managing international convention (draft for short) of the international ship ballast water and sediments in 2004, namely, the species and the number of living organisms in the treated water are clearly specified.
The main current methods adopted at present in the technology for treating ship ballast water at home and abroad are an electrolytic method and an ultraviolet irradiation method, wherein the principle of the electrolytic method is that an oxidation type bactericide is added into ballast water to enable residual oxides in the water to reach a certain level and keep for a certain time so as to kill harmful aquatic organisms in the water, thereby achieving a ballast water performance standard (D-2 standard) specified by the International Maritime Organization (IMO). However, in this type of technology of adding an oxidizing bactericide, the concentration of the discharged residual oxide may exceed the standard while killing harmful aquatic organisms, causing secondary pollution to the water area, and therefore, it is necessary to measure and treat the total residual oxidant (hereinafter, referred to as TRO) before discharging.
The DPD absorptiometry method is generally adopted for monitoring the TRO of the ballast water, and because the temperature of a cabin is higher, the DPD indicating reagent is easy to lose efficacy, the numerical error of the monitored TRO is larger, and therefore the DPD indicating reagent needs to be stored below a certain temperature. On the other hand, when carrying out TRO monitoring sample, because the pipeline of taking a sample between ballast water pipeline thief hatch and the monitoring unit is longer, often has the air column in the pipeline, adopts electric water pump sample difficulty, can not provide stable rivers, and easily leads to the water sample of getting and detect the water sample asynchronous. In addition, only one monitoring device can correspond to one sampling point during TRO sampling monitoring, so that the monitoring cost is increased, and the equipment utilization rate is not high.
At present, in the using process of monitoring equipment in the market, a plurality of defects such as lack of safety setting, alarm setting and the like exist, so that an efficient, safe and stable positive-pressure explosion-proof monitoring device for residual oxides is urgently needed in the technical field of ship ballast water.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides an explosion-proof monitoring devices of remaining oxidant malleation of ship ballast water can be safe high-efficient must carry out sampling monitoring to one or more sampling point.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a ship ballast water total residual oxidant positive pressure explosion-proof monitoring device is characterized in that: the TRO analysis device comprises a box body, wherein a TRO analyzer is fixedly arranged in the middle of the upper part of the box body, a compressed air inlet is hermetically arranged at the left side of the box body, the compressed air inlet is connected with the TRO analyzer through an air pipe, and the internal air pressure of the TRO analyzer and the external air pressure of the box body are balanced by adjusting the entering amount of compressed air;
a refrigerating chamber is fixedly arranged at the right side of the upper part of the box body and is used for adjusting the temperature in the box body;
a differential pressure transmitter is fixedly arranged at the right side of the upper part of the box body and used for monitoring the air pressure difference inside and outside the box body;
the left side of the lower part of the box body is fixedly provided with a pneumatic diaphragm pump, an air inlet throttle valve is arranged in the pneumatic diaphragm pump, the air inlet throttle valve is fixedly connected with an air outlet throttle valve above the pneumatic diaphragm pump through an air pipe in a sealing manner, and an electromagnetic valve is arranged on the air outlet throttle valve;
the lower part of the pneumatic diaphragm pump is provided with an exhaust pipe which is hermetically connected with an air outlet of the pneumatic diaphragm pump arranged at the bottom of the box body and provided with a silencer;
a salinity meter is fixedly arranged in the middle of the lower part of the box body and used for rapidly measuring the weight percentage concentration of a salt (sodium chloride) containing solution in seawater, one side of the salinity meter is connected with the pneumatic diaphragm pump through a pipeline, and the other side of the salinity meter is connected with four water inlets arranged outside the box body through four groups of water inlet pipelines; each water inlet pipeline is provided with a group of electromagnetic valves;
a filter bowl clamping plate is arranged at the liquid inlet of the TRO analyzer;
a liquid outlet of the TRO analyzer is hermetically connected with a sewage draining outlet arranged outside the box body through a pipeline;
a relay is fixedly arranged on the left side of the upper part of the box body, a wiring terminal strip is fixedly arranged on the lower part of the relay, and wiring grooves are fixedly arranged on two sides of the relay; a grounding copper bar is fixedly arranged on the left side of the relay; the relay provides electric power for the TRO analyzer, the refrigeration chamber, the differential pressure transmitter, the pneumatic diaphragm pump, the electromagnetic valve and the salinity meter through an external power supply;
the bottom of the box body is also provided with a medicine box clamping plate;
and an explosion-proof stuffing box, a vortex tube assembly and an explosion-proof device are also arranged outside the box body.
Furthermore, the main body of the refrigeration chamber is a spiral cylinder, the interior of the spiral cylinder is hollow cylindrical and is used for placing a DPD indicator bottle, a temperature sensor is installed on the spiral cylinder, and the outer layer of the refrigeration chamber is coated with a heat insulation material;
further, the vortex tube assembly comprises a vortex tube, a housing, a nut and an end cover. The vortex tube is fixed on the upper wall of the box body through a nut, the lower end of the nut compresses an outer cover of the vortex tube assembly, the end part of the outer cover is provided with external threads which are in threaded connection with the end cover, the nut is provided with a plurality of vent holes, and the outer cover is provided with a plurality of exhaust holes;
furthermore, the explosion-proof device is a three-way exhaust pipe, one end of the three-way exhaust pipe is hermetically connected to the box body, the other end of the three-way exhaust pipe is provided with a silencer, and the other ends of the three-way exhaust pipe are provided with explosion-proof flow switches which control the air output of the three-way exhaust pipe.
Furthermore, an electromagnetic valve purging air outlet pipeline is further arranged in the box body, and when the temperature sensor monitors that the temperature of the DPD indicator is lower than 20 ℃, compressed air is discharged into the box body from the electromagnetic valve purging air outlet pipeline for purging.
Furthermore, in order to prevent the hot air from the vortex tube from being over-heated when the hot air is discharged, the shell, the nut and the end cover are all made of materials with good heat conductivity.
The specific operation mode is as follows:
firstly, when the positive pressure monitoring device is started, compressed air firstly enters the box body to be blown for 20min, the blown air quantity is more than five times of the volume of the box body, so that explosive gas in the box body is discharged, and after blowing is finished, the monitoring device is formally electrified to operate.
Compressed air is divided into two paths after entering the monitoring device from an inlet, one path of compressed air is supplied by a pneumatic diaphragm pump, the other path of compressed air is supplied by vortex tube refrigeration and box body pressure maintaining, the on-off of an air path is controlled by a pneumatic diaphragm pump electromagnetic valve and a vortex tube electromagnetic valve respectively, the air flow is adjusted by a first air throttle valve and a second air throttle valve respectively, the vortex tube electromagnetic valve is a two-position three-way electromagnetic valve and is supplied by the vortex tube when being powered on, the discharged cold air is discharged in the box body, and when the vortex tube electromagnetic valve is powered off, the compressed air does not pass through.
When the electromagnetic valve of the vortex tube is electrified, compressed air enters the vortex tube through the pipeline, cold air coming out of the vortex tube enters the refrigerating chamber to cool the DPD indicator, the cooling gas is discharged in the box body from the refrigerating chamber, when the cooling chamber is cooled to a set temperature, the electromagnetic valve of the gas circuit is powered off, the vortex tube stops refrigerating, the compressed air is directly discharged in the box body through another outlet of the electromagnetic valve, the pressure in the box body is always higher than the external pressure when the box body works by continuously introducing the compressed air and the gas output is controlled by the explosion-proof flow switch to ensure that the internal pressure of the equipment is always higher than the external pressure when the equipment runs, and therefore explosive gas in the external environment cannot enter the monitoring device, and the design of.
And fourthly, the monitoring device extracts a water sample through a sampling pipeline through the pneumatic diaphragm pump for monitoring. The pneumatic diaphragm pump can run in no-load mode, has high suction lift, can provide continuous and stable water flow, and cannot be corroded by sampling water. The adjustment of the sampling water flow is realized by adjusting the gas flow through a gas throttle valve arranged on the pneumatic diaphragm pump.
And fifthly, the TRO monitoring device measures the TRO of the ballast water by adopting a DPD absorption photometry, and a vortex tube and a refrigerating chamber are adopted to refrigerate the DPD indicator. The DPD indicator bottle is placed in a refrigeration chamber, and a temperature sensor is installed in the refrigeration chamber and used for detecting the temperature of the DPD indicator. When the ambient temperature is high, the temperature sensor detects that the temperature of the DPD indicator exceeds a set value, the control unit opens the air path electromagnetic valve of the vortex tube, compressed air with the pressure of 5-7 bar enters the vortex tube through the pipeline, cold air coming out of the vortex tube enters the refrigerating chamber through the cold air pipeline to cool the DPD indicator, and when the DPD indicator is cooled to the set value, the control unit closes the air path electromagnetic valve of the vortex tube to stop refrigerating.
The utility model has the advantages that:
(1) the utility model discloses possess the explosion-proof function of malleation, what adopt is that the type explosion-proof form that lasts sweeps, can incessant continuous air feed, and the work heat of malleation intracavity dress component can be taken away along with the gas circuit, has fine heat dissipation function, and only reaches the time of taking a breath of regulation after, the automatic power transmission of side ability to there are safety chain protections such as the automatic audible and visual alarm of height, low pressure and the automatic outage of opening the door, urgent manual outage.
(2) The utility model provides a TRO monitoring devices can carry out the sample monitoring to one or more sampling point through the switching of pneumatic diaphragm pump and sample pipeline solenoid valve to can adjust, control through the TRO value of main control system in to the ballast water when ballast and uninstallation.
During ballasting, the TRO analyzer measures TRO values in a ballast water pipeline and feeds back measured value signals to the main control system, and the main control system adjusts the ballast water treatment unit according to the measured TRO values, so that the TRO values generated by the ballast water treatment unit are kept in a proper range, and the ballast water treatment effect is ensured; during unloading, the TRO analyzer determines the TRO value in the discharged water and feeds back the determined value signal to the main control system, the main control system controls the neutralizing unit according to the determined TRO value and the water flow in the pipeline of the ballast water system to adjust the amount of the added neutralizing agent, and the neutralizing agent neutralizes excessive TRO, so that the discharged water meets the discharge requirement.
(3) The middle pneumatic diaphragm pump has high suction lift, can run in no-load, can provide continuous and stable sampling water flow, improves the accuracy of measurement, and ensures the synchronism of detection data and water flow; meanwhile, the sample water cannot be corroded; can be applied to explosion-proof environment; adopt pneumatic diaphragm pump, avoided because the pipeline of taking a sample between ballast water pipeline sample connection and the monitoring unit is longer, often have the gas column in the pipeline, adopt the problem of electric water pump sample difficulty, still avoided electric water pump to give out heat high problem.
(4) The utility model discloses in, adopt vortex tube and refrigeration chamber to refrigerate the DPD indicator. The refrigeration effect is good, and the reliability is high, has guaranteed the accuracy of monitoring unit test result.
(5) The utility model discloses in, sweep the gas outlet pipe way through being provided with the solenoid valve, when temperature sensor monitors DPD indicator temperature and is less than 20 ℃, close vortex tube gas circuit solenoid valve and stop the refrigeration, compressed air sweeps the gas outlet pipe way by the solenoid valve and arranges to sweep the back by the blast pipe in the box, thereby guarantee that the box during operation has the compressed air who lasts to let in wherein, the box internal pressure is higher than outer internal pressure always when guaranteeing equipment operation through adjusting flame proof flow switch control air output, thereby ensure in the explosive gas of external environment can't enter into monitoring devices, thereby accomplish the explosion-proof design of malleation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the water inlet structure of the present invention;
FIG. 3 is a schematic structural view of the explosion-proof device of the present invention;
fig. 4 is a schematic view of the refrigerating chamber of the present invention;
FIG. 5 is a schematic view of a vortex tube assembly according to the present invention;
in the figure: 1. a box body; 2. a TRO analyzer; 3. a refrigeration compartment; 4. a differential pressure transducer; 5. a compressed air inlet; 6. an air tube; 7. a relay; 8. a terminal block; 9. a wiring groove; 10. a ground copper bar; 11. a pneumatic diaphragm pump; 12. an intake throttle valve; 13. an air tube; 14. an air outlet throttle valve; 15. an electromagnetic valve; 16. an exhaust pipe; 17. a muffler; 18. an air outlet of the pneumatic diaphragm pump; 19. a salinity meter; 20. a water inlet; 21. a liquid inlet; 22. a liquid outlet; 23. a filter cup clamping plate; 24. a sewage draining outlet; 25. An explosion-proof stuffing box; 26. a vortex tube assembly; 261. A vortex tube; 262. a housing; 263. a nut; 264. an end cap; 27. an explosion-proof device; 271. a three-way exhaust pipe; 272. a muffler; 273. an explosion-proof flow switch; 28, purging an air outlet pipeline by using an electromagnetic valve; 29. a medicine box splint; 31. a spiral cylinder; 32. a DPD indicator bottle; 33. a temperature sensor.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 5, a positive pressure explosion-proof monitoring device for total residual oxidant in ship ballast water is characterized in that: the TRO analysis device comprises a box body 1, wherein a TRO analyzer 2 is fixedly arranged in the middle of the upper part of the box body 1, a compressed air inlet 5 is hermetically arranged at the left side of the box body 1, the compressed air inlet 5 is connected with the TRO analyzer 2 through an air pipe 6, and the air pressure inside the TRO analyzer 2 and the air pressure outside the box body are balanced by adjusting the entering amount of compressed air;
a refrigerating chamber 3 is fixedly arranged at the right side of the upper part of the box body 1 and is used for adjusting the temperature in the box body;
a differential pressure transmitter 4 is fixedly arranged at the right side of the upper part of the box body 1 and is used for monitoring the air pressure difference inside and outside the box body;
a pneumatic diaphragm pump 11 is fixedly arranged on the left side of the lower part of the box body 1, an air inlet throttle valve 12 is arranged in the pneumatic diaphragm pump 11, the air inlet throttle valve 12 is fixedly connected with an air outlet throttle valve 14 above the pneumatic diaphragm pump 11 through an air pipe 13 in a sealing manner, and an electromagnetic valve 15 is arranged on the air outlet throttle valve 14;
an exhaust pipe 16 is arranged at the lower part of the pneumatic diaphragm pump 11, and the exhaust pipe 16 is hermetically connected with an air outlet 18 of the pneumatic diaphragm pump, which is arranged at the bottom of the box body and is provided with a silencer 17;
a salinity meter 19 is fixedly arranged in the middle of the lower part of the box body and used for rapidly measuring the weight percentage concentration of a salt (sodium chloride) containing solution in seawater, one side of the salinity meter 19 is connected with the pneumatic diaphragm pump 11 through a pipeline, and the other side of the salinity meter is connected with four water inlets 20 arranged outside the box body through four groups of water inlet pipelines; each water inlet pipeline is provided with a group of electromagnetic valves 15;
a filter cup clamping plate 23 is arranged at a liquid inlet 21 of the TRO analyzer 2;
the liquid outlet 22 of the TRO analyzer 2 is hermetically connected with a sewage draining outlet 24 arranged outside the box body through a pipeline;
a relay 7 is fixedly arranged on the left side of the upper part of the box body 1, a wiring terminal block 8 is fixedly arranged on the lower part of the relay 7, and wiring grooves 9 are fixedly arranged on two sides of the relay 7; a grounding copper bar 10 is fixedly arranged on the left side of the relay 7; the relay 7 provides power for the TRO analyzer 2, the refrigeration chamber 3, the differential pressure transmitter 4, the pneumatic diaphragm pump 11, the electromagnetic valve 14 and the salinity meter 18 through an external power supply;
a medicine box clamping plate 29 is further arranged at the bottom of the box body 1;
and an explosion-proof stuffing box 25, a vortex tube assembly 26 and an explosion-proof device 27 are also arranged outside the box body 1.
Further, the main body of the refrigerating chamber 3 is a spiral cylinder 31, the spiral cylinder 31 is hollow and cylindrical and is used for placing a DPD indicator bottle 32, a temperature sensor 33 is installed on the spiral cylinder, and the outer layer of the refrigerating chamber 3 is coated with a heat insulating material;
further, the vortex tube assembly 26 includes a vortex tube 261, a housing 262, a nut 263, and an end cap 264. The vortex tube 261 is fixed on the upper wall of the box body through a nut 263, the lower end of the nut 263 compresses the outer cover 262 of the vortex tube assembly 26, the end part of the outer cover 262 is provided with external threads which are in threaded connection with an end cover 264, the nut 263 is provided with a plurality of vent holes, and the outer cover 263 is provided with a plurality of vent holes;
further, the explosion-proof device 27 is a three-way exhaust pipe 271, one end of the three-way exhaust pipe 271 is hermetically connected to the box body, the other end of the three-way exhaust pipe is provided with a silencer 272, and the other end of the three-way exhaust pipe is provided with an explosion-proof flow switch 273, wherein the explosion-proof flow switch 273 controls the air output of the three-way exhaust pipe 271.
Further, an electromagnetic valve purging outlet pipeline 28 is further arranged in the box body 1, and when the temperature sensor 33 monitors that the temperature of the DPD indicator is lower than 20 ℃, compressed air is discharged into the box body through the electromagnetic valve purging outlet pipeline 28 for purging.
The above description is only for the purpose of illustration, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are all within the scope of the present invention.
Claims (3)
1. A ship ballast water total residual oxidant positive pressure explosion-proof monitoring device is characterized in that: the TRO analysis device comprises a box body, wherein a TRO analyzer is fixedly arranged in the middle of the upper part of the box body, a compressed air inlet is hermetically arranged at the left side of the box body, the compressed air inlet is connected with the TRO analyzer through an air pipe, and the internal air pressure of the TRO analyzer and the external air pressure of the box body are balanced by adjusting the entering amount of compressed air;
a refrigerating chamber is fixedly arranged at the right side of the upper part of the box body;
a differential pressure transmitter is fixedly arranged at the right side of the upper part of the box body;
the left side of the lower part of the box body is fixedly provided with a pneumatic diaphragm pump, an air inlet throttle valve is arranged in the pneumatic diaphragm pump, the air inlet throttle valve is fixedly connected with an air outlet throttle valve above the pneumatic diaphragm pump through an air pipe in a sealing manner, and an electromagnetic valve is arranged on the air outlet throttle valve;
the lower part of the pneumatic diaphragm pump is provided with an exhaust pipe which is hermetically connected with an air outlet of the pneumatic diaphragm pump arranged at the bottom of the box body and provided with a silencer;
a salinity meter is fixedly arranged in the middle of the lower part of the box body and used for rapidly measuring the weight percentage concentration of a sodium chloride-containing solution in seawater, one side of the salinity meter is connected with the pneumatic diaphragm pump through a pipeline, and the other side of the salinity meter is connected with four water inlets arranged outside the box body through four groups of water inlet pipelines; each water inlet pipeline is provided with a group of electromagnetic valves;
a filter bowl clamping plate is arranged at the liquid inlet of the TRO analyzer;
a liquid outlet of the TRO analyzer is hermetically connected with a sewage draining outlet arranged outside the box body through a pipeline;
a relay is fixedly arranged on the left side of the upper part of the box body, a wiring terminal strip is fixedly arranged on the lower part of the relay, and wiring grooves are fixedly arranged on two sides of the relay; a grounding copper bar is fixedly arranged on the left side of the relay; the relay provides electric power for the TRO analyzer, the refrigeration chamber, the differential pressure transmitter, the pneumatic diaphragm pump, the electromagnetic valve and the salinity meter through an external power supply;
the bottom of the box body is also provided with a medicine box clamping plate;
an explosion-proof stuffing box, a vortex tube assembly and an explosion-proof device are also arranged outside the box body;
the main body of the refrigeration chamber is a spiral cylinder, the interior of the spiral cylinder is hollow cylindrical and is used for placing a DPD indicator bottle, a temperature sensor is arranged on the spiral cylinder, and the outer layer of the refrigeration chamber is coated with a heat insulation material;
the vortex tube assembly comprises a vortex tube, an outer cover, a nut and an end cover; the vortex tube is fixed on the upper wall of the box body through a nut, the lower end of the nut compresses an outer cover of the vortex tube assembly, the end part of the outer cover is provided with external threads which are in threaded connection with the end cover, the nut is provided with a plurality of vent holes, and the outer cover is provided with a plurality of exhaust holes;
the explosion-proof device is a three-way exhaust pipe, one end of the explosion-proof device is connected to the box body in a sealing mode, the other end of the explosion-proof device is provided with a silencer, and the other end of the explosion-proof device is provided with an explosion-proof flow switch which controls the air output of the three-way exhaust pipe.
2. The positive pressure explosion-proof monitoring device for total residual oxidant in ship ballast water according to claim 1, characterized in that: and when the temperature sensor monitors that the temperature of the DPD indicator is lower than a set temperature, compressed air is discharged into the box body from the electromagnetic valve purging air outlet pipeline for purging.
3. The positive pressure explosion-proof monitoring device for the total residual oxidant in the ship ballast water as claimed in claim 1, wherein the spiral cylinder of the refrigeration chamber is made of a material with a high heat conductivity coefficient, and the outer layer refrigeration chamber is coated with a heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051525.9U CN211733960U (en) | 2019-11-25 | 2019-11-25 | Positive-pressure explosion-proof monitoring device for total residual oxidant in ship ballast water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922051525.9U CN211733960U (en) | 2019-11-25 | 2019-11-25 | Positive-pressure explosion-proof monitoring device for total residual oxidant in ship ballast water |
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| Publication Number | Publication Date |
|---|---|
| CN211733960U true CN211733960U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922051525.9U Active CN211733960U (en) | 2019-11-25 | 2019-11-25 | Positive-pressure explosion-proof monitoring device for total residual oxidant in ship ballast water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211733960U (en) |
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2019
- 2019-11-25 CN CN201922051525.9U patent/CN211733960U/en active Active
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