CN1018951B - Hydrogen-cracking detector for nodes in ocean platform - Google Patents
Hydrogen-cracking detector for nodes in ocean platformInfo
- Publication number
- CN1018951B CN1018951B CN 89105157 CN89105157A CN1018951B CN 1018951 B CN1018951 B CN 1018951B CN 89105157 CN89105157 CN 89105157 CN 89105157 A CN89105157 A CN 89105157A CN 1018951 B CN1018951 B CN 1018951B
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- sensor
- nodes
- node
- ocean platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Abstract
The present invention relates to a safety detecting device of a node in a sea platform, and the underwater part of the safety detecting device of a node in a sea platform is a gun-shaped structural probe head. The gun-shaped structural probe head is composed of a sensor, a supporting seat and a barrel body, and the probe head is provided with a forward arranged sensor and a fixed-cap zero-shaped sealing ring. A microcomputer system is arranged in the barrel body, and the microcomputer system is composed of a current-voltage converter, an A/D converter, a central processor, etc. A peripheral-appliance tank is used on the water and is composed of a constant-current source, a power supply, an output interface and an ultra micro printer. The present invention carries out the in-situ measurement and the on-site judgment of the H2S pollution level of sea water or sea mud media and the HIC of steel for the node by the probe head, the microcomputer system and a special software system according to the potential ranges of safety, danger and sensitivity.
Description
The invention belongs to the safety detection device of ocean platform node.
Node is the position of ocean platform most critical.The situation of node is directly connected to the safety of platform.Usually, all the surrounding environment of platform sea lower node is seen as the seawater of " totally " or ooze simply and never consider the danger of node generation environmentally sensitive fracture, and actual condition is far more complex.At the position of joints of complex geometry, adhering to of marine growth can generate seawater " stagnant area " on the surface at these positions, and the discharging of platform domestic sewerage/waste material and in the accumulation of above-mentioned " stagnant area " can form the local pollution of node " stagnant area ".Use the measured result of the new platform position of joints hydrogen sulfide content in 5 years that the report that reaches 20～40PPm is just arranged.At the estuary place of rivers, the H in the seawater
2S content level can reach 50～100PPm, even higher.Node is a bearing strength test, unrelieved stress and the most concentrated zone of random stress, because the design of node cathodic protection potential bears partially with control is general, and so cathodic protection-contain H
2S medium-stress concentrates factors that the synergy of node and the hydrogen that produces are therefrom caused the danger of environmentally sensitive fracture (HIC), will definitely become that node optimization designs and one of the major issue that must consider during safety guarantee.
Though there are at present some type hydrogen detection instruments to be used for detecting pipeline and the equipment hydrogenation electric current at the place medium, still, the danger that these parameters all this class environmentally sensitive fracture do not take place with material connects.And all in atmosphere, normal pressure uses down, and the response time is long, and signal level is low, can not be used for the platform detection of node under water.
Through international online retrieval, all do not find relevant hydrogen fracturing and open the application technology that danger detector is used for this key position safety detection of ocean platform node.
The purpose of this invention is to provide and a kind of ocean platform node hydrogen fracturing is driven dangerous intelligentized sniffer; it can to node " totally " and polluting or the seawater or ooze of local pollution in; the danger that the environment sensitive low stress brittle fracture takes place in different cathodic protection potential scopes is carried out scene detection and judgement on the spot; thereby be the danger of getting rid of production platform HIC and the optimal design of planning to build platform; safety guarantee to platform provides important basis.
Form under water by rifle formula probe and peripherals case and software two parts by hardware for concrete structure of the present invention, the former has comprised preposition sensor, middle coupling sleeve and the pressure cylinder that microsystem is housed, the latter is that superminiature printer and charge power supply etc. are partly formed by the selection mechanism of output control/form.Preposition sensor adopts NHA type enclosure-type button shaped hydrogen-metal oxide fuel cell, its structure is a double-face electrode, the catalyst activity layer has been electroplated in the inboard, the metal oxide powder of negative electrode for not polarizing, at two interpolars is the barrier film that has soaked into the full potassium hydroxide solution of normal temperature, the outside surface of double-face electrode contacts with corrosive medium for filling the hydrogen meter face, its inside surface is the anodic oxidation face that oozes hydrogen, short-circuit current between it and the metal oxide powder negative electrode is signal of sensor, sensor is fixed and is sealed in the front portion of detection instrument with " O " type circle and nylon 1010 pressure cap and joint.Be responsible for data acquisition, storage, processing, result and judge that microsystem up to printout is by having zero resistance reometer, the A/D transducer that current signal (0～250 μ A) amplifies, center processor (CPU), working power, operating mode show that output interface, mini-printer and charge power supply are formed.Probe under water of the present invention is that sensor is sealed within the locking cap, and the centre is nylon 1010 insulated enclosure section and stainless-steel tube, an end fixation of sensor, and the other end and rear cylinder body join.Remove sensor, outside output interface, the printer, all microsystems all are sealed in the cylindrical shell, and by means of said system, through current-to-voltage converter, zero resistance reometer and A/D transducer is stored among the CPU from the measuring-signal of sensor.By custom-designed software systems, the output current of sensor in contaminated environment represented " the infiltration electric current of atomic hydrogen ", and electric current is become relevant voltage by circuit, press extent of corrosion, divide in the ordinary course of things clean seawater,, slight H
2S seawater, moderate H
2S seawater and severe H
2The S seawater is made the differentiation of " safety ", " danger " and " sensitivity " three kinds of situations by every kind of seawater and output voltage, under the local corrosion situation, is " sensitivity " situation less than 30mV in addition, and the sensor output voltage signal is sent into computer network.The H of seawater or ooze medium
2S pollutes level, node is produced danger that hydrogen causes environmentally sensitive fracture with steel judge and print tabulation by the potential range of " safety ", " danger " and " sensitivity " and export.When concrete work, the workplace that sensor contacts with seawater or ooze has the cathodic hydrogen charging function of current of the constant 1mA of being of strength of current in sensor surface, so as to improving signal intensity and resolution, avoid the corrosion on working sensor surface in measuring process simultaneously, the short circuit dischange electric current of sensor has been represented the infiltration rate of atomic hydrogen, use steel at the corresponding relation between the brittle fracture sensitivity under the respective environment condition owing to determined this infiltration rate and node in advance, therefore, the signal output intensity of this sensor has reflected that directly node causes the size of environmentally sensitive fracture danger with steel hydrogen.
Advantage of the present invention:
1, to open danger detector be to be specifically designed to the on-the-spot detection instrument that the ocean platform node security detects to ocean platform hydrogen fracturing; it can be in different cathodic protection potential scopes; when node met or exceeded yield strength with the stress level of steel, the situation to this environmentally sensitive fracture of HIC in different seawater of hydrogen sulfide contamination (local pollution that comprises the node surface) degree or ooze medium judged.
2, the testing result on the spot of hydrogen-cracking detector for nodes in ocean platform, can whether need removing surface timely to node area, remove the local pollution environment, thus the maintaining of node when being the platform annual test, in time eliminate accident potential, make important judgement and suggestion.
3, hydrogen-cracking detector for nodes in ocean platform predicts the outcome on the spot; to the optimal design of planning to build platform (as avoid determine to the serious sensitizing range of HIC with under selected environment more rational protective potential range), thereby provide foundation for the safety guarantee of platform.
The accompanying drawings embodiment:
Fig. 1 is the hydrogen-cracking detector for nodes in ocean platform structure principle chart.
Fig. 2 is a hydrogen-cracking detector for nodes in ocean platform microsystem block scheme.
As shown in Figure 1, front-end probe portion, 1 is the nylon 1010 pressure cap, 2 is " O " RunddichtringO, 3 is sensor, with NHA type sealing button hydrogen-the metal oxide fuel cell is as signal transducer, its short circuit dischange electric current input places the microsystem of detection instrument sealing back cavity, and 4 is insulation sleeve, 5 is " O " RunddichtringO, 6 is coupling sleeve, and 7 is bearing, 8,9,10 is elastic contact blade, nut and guide rod, 11 are the location block set, 12 is cylindrical shell, and 13 is flange, and 14 is gland, 15 is " O " RunddichtringO, 16,17 and 18 is pad, nuts and bolt, 19 is microsystem, 20 is handle, 21 is the tube bottom (head), 22 is the top base, and 23 is insulation spacer, and the probe under water of whole detection instrument is in the pressure-resistant seal state.Know as Fig. 2, I is a sensor, II is a current-to-voltage converter, and III is the A/D transducer, and IV is center processor (CPU), V is the output control interface, VI is the superminiature printer, and V, VI are used on the water, and VIII is a constant-current circuit, during at 0～2.5K Ω, provide the constant cathode of sensor 1mA to fill the hydrogen electric current at the resistance of extraneous load (seawater or ooze add the calcium-magnesium salts sedimentary deposit that is formed at sensor I outside surface) all the time.Different with hydrogen sulfide content in detection instrument place seawater or the ooze medium, signal of sensor shows as the discharge current of 0～250 μ A, discharge current is converted to the standard signal of 0～5V for the A/D conversion via zero resistance galvanometer, microsystem is selected eight monolithic processors (80C39) for use, external 2KEPROM selects for use cmos device to constitute.IX is a power circuit, and in order to supply with A/D reference voltage and other parts power supply of microcomputer, VII is that operating mode shows that its demonstration is made of two light emitting diodes.Red, green two luminous forms of light collecting diode various combination are represented several working conditions such as preparation, collection, displacement, saturated, halt respectively.
This detection instrument has carried out extra large application test down on some " K-K " shape pipe nodes of Bohai Sea chengbei oilfield U/A-B platform, in its globigerina top layer of closely being close to and deep layer and the seawater, reached intrinsic performance and request for utilization fully.
Claims (4)
1, a kind of hydrogen-cracking detector for nodes in ocean platform is characterized in that being made up of rifle formula probe and peripherals case, and described rifle formula is popped one's head in and comprised preposition sensor (3), the coupling sleeve (6) of centre and the pressure-bearing tube (12) of microsystem is housed; Put sensor (3) before described and adopt MHA type enclosure-type button shaped hydrogen one metal oxide fuel cell, sensor is fixed and is sealed in the front portion of rifle formula probe with " 0 " type circle (2) and nylon 1010 pressure cap (1) and tube bottom (head) (21); The peripheral equipment case comprises output control/form selection mechanism (V) outside described, superminiature printer (VI) and charge power supply (VIII), and described peripherals case uses on the water.
2, the hydrogen-cracking detector for nodes in ocean platform according to claim 1 is characterized in that insulation sleeve (4) being housed, the bearing (7) of " O " RunddichtringO (5) and back, middle coupling sleeve (6) in the probe.
3,, it is characterized in that elastic contact blade, nut, guide rod (8) (9) (10) are equipped with in the center in coupling sleeve (6) according to claim 1 or 2 described hydrogen-cracking detector for nodes in ocean platform.
4, the hydrogen-cracking detector for nodes in ocean platform according to claim 1, it is characterized in that joining with microsystem (IV) is above-water output interface (V) and printer (VI).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105157 CN1018951B (en) | 1989-09-08 | 1989-09-08 | Hydrogen-cracking detector for nodes in ocean platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105157 CN1018951B (en) | 1989-09-08 | 1989-09-08 | Hydrogen-cracking detector for nodes in ocean platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050090A CN1050090A (en) | 1991-03-20 |
| CN1018951B true CN1018951B (en) | 1992-11-04 |
Family
ID=4855925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105157 Expired CN1018951B (en) | 1989-09-08 | 1989-09-08 | Hydrogen-cracking detector for nodes in ocean platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018951B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004784B (en) * | 2015-08-24 | 2016-08-17 | 中国石油大学(华东) | Metallic structures flaw detection probe under water based on ac magnetic field |
-
1989
- 1989-09-08 CN CN 89105157 patent/CN1018951B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050090A (en) | 1991-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108168604B (en) | Soil environment monitoring devices based on solar energy | |
| CN102841180B (en) | Ocean ship corrosion factor comprehensive detection method | |
| CN106198375A (en) | A kind of deep-sea multichannel corrosion electrochemistry in-situ testing device and method of testing thereof | |
| CN108692981A (en) | Water quality monitoring bar and its monitoring system | |
| CN1940578A (en) | Non-contact inspection and its special device at marine-bottom pipeline cathode protecting state | |
| CN100585010C (en) | Monitoring device for sea platform sacrificing anode and generating current flow | |
| CN111927688A (en) | Self-generating ocean water quality detection platform and self-generating detection method | |
| CN202954096U (en) | Cathode protection monitoring device of offshore wind power foundation structure | |
| CN110514802A (en) | Compound piezoelectric-nano friction self-power supply system for water quality monitoring | |
| CN1018951B (en) | Hydrogen-cracking detector for nodes in ocean platform | |
| CN204807161U (en) | Throw type water level monitoring devices | |
| CN206986284U (en) | A kind of buried pipeline monitoring system | |
| CN209356010U (en) | Dangerous waste solid fills pit level monitor | |
| CN114965923B (en) | Online water quality environment monitoring device convenient to clearance | |
| CN1384342A (en) | Intelligent gas flowmeter | |
| CN205301144U (en) | Aircraft structure coating corrosion resisting property electrochemistry impedance testing arrangement | |
| CN1243242C (en) | Deep sea abnormal environment physico chemical quantity detection device | |
| CN208568025U (en) | A kind of New electrode electric water gauge | |
| CN112609185A (en) | Intelligent monitoring system for oil gas steel pipeline yin protection | |
| CN220789598U (en) | Hydraulic engineering bank protection device | |
| CN105043632A (en) | Underwater anchor rope tension force acquisition device | |
| CN204855068U (en) | Storage formula rings pulling force sensing device | |
| CN217605078U (en) | Novel laser water level monitoring device | |
| CN209820584U (en) | Boiler liquid level tester | |
| CN110823143A (en) | Novel sensing device for monitoring sedimentation depth of front pool of pump station on line and monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |