CN112128182A - Anchor ear and fishing detector transducer - Google Patents
Anchor ear and fishing detector transducer Download PDFInfo
- Publication number
- CN112128182A CN112128182A CN202010967302.1A CN202010967302A CN112128182A CN 112128182 A CN112128182 A CN 112128182A CN 202010967302 A CN202010967302 A CN 202010967302A CN 112128182 A CN112128182 A CN 112128182A
- Authority
- CN
- China
- Prior art keywords
- connecting piece
- thin
- circular ring
- opening
- hoop
- 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.)
- Pending
Links
- 239000011527 polyurethane coating Substances 0.000 claims abstract description 24
- 241000251468 Actinopterygii Species 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 239000010410 layer Substances 0.000 abstract description 19
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013040 rubber vulcanization Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
- F16L23/08—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/165—Flanged joints characterised by the sealing means comprising a viscous mass, e.g. hardenable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/96—Sonar systems specially adapted for specific applications for locating fish
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention provides a hoop and a fish detector transducer, which comprises an opening piece and a fastening piece; the opening part comprises a thin-wall circular ring (1), and the thin-wall circular ring (1) is provided with an opening (2); the fastener comprises a first connecting piece (3) and a second connecting piece (4), the first connecting piece (3) is arranged at one end of the opening (2) on the thin-wall circular ring (1), and the second connecting piece (4) is arranged at the other end of the opening (2) on the thin-wall circular ring (1); the first connecting piece (3) and the second connecting piece (4) can be connected in a fastening mode so that the opening (2) of the thin-wall circular ring (1) is closed. The hoop provided by the invention is provided with the first connecting piece (3) and the second connecting piece (4) which can be tightly connected, so that the diameter of the thin-wall ring (1) can be reduced, a polyurethane coating layer (5) of a fish detector transducer is further compressed, and the watertight performance of the joint of the polyurethane coating layer (5) and the metal flange (6) is improved.
Description
Technical Field
The invention relates to the technical field of water tightness, in particular to a hoop and a fishing detector transducer.
Background
Most of the traditional transducer watertight coating materials in China are rubber or polyurethane materials, the water permeability of the rubber serving as the coating material is superior to that of the polyurethane coating, but in transducers with larger sizes such as a fish detector and the like, the rubber vulcanization process is difficult and is often less in use, so that how to improve the watertight reliability of the polyurethane coating material is particularly important.
When the energy converter is used in engineering, water permeates into energy converter components through the polyurethane coating layer to cause the failure of the energy converter generally through two paths, wherein the first path is direct permeation, the second path is permeation through the joint of the polyurethane coating layer and the metal flange, and the probability of permeation of the energy converter through the joint of the polyurethane coating layer and the metal flange in a seawater high-pressure environment is far greater than that of the direct permeation. Research and demonstration show that under the actual working condition of seawater, a packaging interface is under the action of high hydrostatic pressure, materials on two sides generate certain shearing force due to different deformation, hydrolysis or other actions can cause the failure or degradation of a coupling agent between a polyurethane coating layer and a metal flange, and when the bonding strength of a material on the interface is reduced to be insufficient to resist the shearing force, packaging leakage failure can occur. The invention adds the polyurethane coating layer at the compression joint to achieve the aim of improving the reliability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the hoop.
The hoop comprises an opening piece and a fastener;
the opening piece comprises a thin-wall circular ring, and an opening is formed in the thin-wall circular ring;
the fastener comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged at one end of the opening on the thin-wall circular ring, and the second connecting piece is arranged at the other end of the opening on the thin-wall circular ring;
the first connecting piece and the second connecting piece can be firmly connected so that the opening of the thin-wall circular ring is closed.
Preferably, the first connecting piece protrudes from one end of the thin-wall ring in the circumferential direction, and the protruding structure of the first connecting piece is arranged above the opening;
the convex structure of the thin-wall circular ring protrudes out of the second connecting piece in the circumferential direction;
when the first connecting piece and the second connecting piece are fixedly connected, the protruding structure of the first connecting piece is positioned above the protruding structure of the thin-wall circular ring, and the bottom surface of the protruding structure of the first connecting piece is tightly attached to the top surface of the protruding structure of the thin-wall circular ring.
Preferably, the first connecting piece and the second connecting piece are connected by screw fastening.
Preferably, the wall thickness of the thin-wall circular ring is 2-3 mm.
Preferably, when the first connecting piece and the second connecting piece are not connected, the distance between two ends of the opening is 2-3 mm.
Preferably, the distance between the first connecting piece and the second connecting piece is 5mm when the first connecting piece and the second connecting piece are not connected.
Preferably, the corners of the thin-walled ring, the first connecting member and the second connecting member are provided with chamfers.
Preferably, the anchor ear is stress-relieved.
Preferably, the thin-wall circular ring, the first connecting piece and the second connecting piece are made of industrial pure titanium TA2 material.
The invention also provides a fishing detector transducer.
According to the fish detector transducer provided by the invention, the hoop is installed, and the hoop is tightly connected with the metal flange of the fish detector transducer through the polyurethane coating layer of the fish detector transducer.
Compared with the prior art, the invention has the following beneficial effects:
1. the diameter of the thin-wall circular ring can be reduced by arranging the first connecting piece and the second connecting piece which can be tightly connected, the reduced thin-wall circular ring can compress a polyurethane coating layer of the energy converter of the fish detector, and the watertight performance of the joint of the polyurethane coating layer and the metal flange is improved;
2. the chamfering is arranged on the corners of the hoop, so that the hoop has no edges and corners, and the polyurethane coating layer is prevented from being damaged;
3. the anchor ear is made of industrial pure titanium TA2 material, so that the corrosion resistance of the anchor ear is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a hoop;
FIG. 2 is a schematic view of a fish finder transducer;
FIG. 3 is a schematic view of a fish finder transducer;
FIG. 4 is a partial schematic view of a fish finder transducer;
in the figure:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples
FIG. 1 is a schematic view of a hoop provided by the present invention, which includes a split piece and a fastener according to the present invention;
the opening part comprises a thin-wall circular ring 1, preferably, the wall thickness of the thin-wall circular ring 1 is 2-3 mm, the inner diameter of the thin-wall circular ring 1 is 246mm, and the height of the thin-wall circular ring 1 is 16 mm. The thin-walled ring 1 is provided with an opening 2.
The fastener comprises a first connecting piece 3 and a second connecting piece 4, the thickness of the first connecting piece 3 and the second connecting piece 4 is 12mm, and the width of the first connecting piece 3 and the second connecting piece 4 is 30 mm; the first connecting piece 3 is arranged at one end of the opening 2 on the thin-wall circular ring 1, the first connecting piece 3 protrudes out of one end of the thin-wall circular ring 1 in the circumferential direction, and the protruding structure of the first connecting piece 3 is arranged above the opening 2; the second connecting piece 4 is arranged at the other end of the opening 2 on the thin-wall circular ring 1, and the protruding structure of the thin-wall circular ring 1 protrudes out of the second connecting piece 4 in the circumferential direction; the first connecting piece 3 and the second connecting piece 4 can be tightly connected through the screw 7 to close the opening 2 of the thin-wall circular ring 1, when the first connecting piece 3 and the second connecting piece 4 are tightly connected, the first connecting piece 3 and the second connecting piece 4 are tightly attached, the protruding structure of the first connecting piece 3 is positioned above the protruding structure of the thin-wall circular ring 1, and the bottom surface of the protruding structure of the first connecting piece 3 is tightly attached to the top surface of the protruding structure of the thin-wall circular ring 1; preferably, the screw 7 is an M4 screw.
The thin-wall circular ring 1, the first connecting piece 3 and the second connecting piece 4 are made of industrial pure titanium TA2 material; the method is characterized in that an industrial pure titanium TA2 plate with the thickness of 20mm is adopted, the material has good ductility, after the first rough machining forming, a machining tool clamps and fixes the hoop and carries out stress relief treatment, and preferably, heat treatment is carried out to relieve stress; and flaw detection is carried out on the hoop after the completion, so that the crack-free hoop is ensured.
Carry out secondary finish machining to the staple bolt after accomplishing, finish machining accomplishes the back, and when first connecting piece 3 and second connecting piece 4 do not connect, the distance at 2 both ends of opening is 2 ~ 3mm, and the distance of first connecting piece 3 and second connecting piece 4 is 5 mm. And the corners of the thin-wall ring 1, the first connecting piece 3 and the second connecting piece 4 are provided with chamfers, and the chamfer size is R1, so that no edge angle of the hoop is ensured, and the damage to the polyurethane coating layer 5 during installation of the hoop is avoided.
Fig. 2-4 are schematic diagrams of the energy converter of the fish detector provided by the invention, the anchor ear is arranged on the energy converter of the fish detector provided by the invention, when the energy converter is installed, the anchor ear is sleeved outside the polyurethane coating layer 5 and the metal flange 6 of the energy converter of the fish detector, then the screw 7 is tightened, the thin-wall ring 1 of the anchor ear is tightened, and the anchor ear is tightly connected with the metal flange 6 of the energy converter of the fish detector through the polyurethane coating layer 5 of the energy converter of the fish detector, so that the circumference of the joint of the polyurethane coating layer 5 and the metal flange 6 of the energy converter of the fish detector is sealed.
The hoop is made of the industrial pure titanium TA2, the impurity content of the industrial pure titanium TA2 is more than that of chemical pure titanium, so the hoop has higher strength and hardness, the mechanical property and the chemical property of the hoop are similar to those of stainless steel, the hoop has good plasticity and ductility, can be cut and processed, has good corrosion resistance, and is superior to austenitic stainless steel in oxidation resistance. The corrosion resistance of the material meets the requirement of long-term operation of the seabed.
The thickness of the conventional polyurethane coating layer 5 encapsulated at the metal flange 6 of the energy converter of the fishing detector is calculated according to 10mm, when the hoop is completely tightened, the diameter of the polyurethane coating layer 5 is reduced by about 1mm, namely, a single layer is 0.5mm, the compression amount is 5 percent, and the polyurethane coating layer 5 is in the safe compression range of the polyurethane coating layer 5; meanwhile, the thickness of the thin-wall circular ring 1 is 16mm, which is equivalent to the situation that the polyurethane coating 5 is completely compressed on a path of 16mm, and at the moment, the polyurethane coating 5 can better prevent water from entering the inside of the energy converter of the fishing detector as a stuffing box.
The invention improves the watertight reliability of the fishing detector transducer working in seawater for a long time and prolongs the service life of the fishing detector transducer; the hoop is made of an industrial pure titanium TA2 material, and the corrosion resistance of the industrial pure titanium TA2 material is superior to that of the traditional material stainless steel; in addition, compared with rubber vulcanization and metal shell fishing detector, the invention has the advantages of low process difficulty, small weight, light weight and convenient installation and maintenance.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The hoop is characterized by comprising an opening piece and a fastening piece;
the opening part comprises a thin-wall circular ring (1), and the thin-wall circular ring (1) is provided with an opening (2);
the fastener comprises a first connecting piece (3) and a second connecting piece (4), the first connecting piece (3) is arranged at one end of the opening (2) on the thin-wall circular ring (1), and the second connecting piece (4) is arranged at the other end of the opening (2) on the thin-wall circular ring (1);
the first connecting piece (3) and the second connecting piece (4) can be connected in a fastening mode so that the opening (2) of the thin-wall circular ring (1) is closed.
2. The hoop according to claim 1, wherein the first connector (3) protrudes circumferentially beyond one end of the thin-walled ring (1), the protruding structure of the first connector (3) being arranged above the opening (2);
the protruding structure of the thin-wall circular ring (1) protrudes out of the second connecting piece (4) in the circumferential direction;
when the first connecting piece (3) is fixedly connected with the second connecting piece (4), the protruding structure of the first connecting piece (3) is positioned above the protruding structure of the thin-wall circular ring (1), and the bottom surface of the protruding structure of the first connecting piece (3) is tightly attached to the top surface of the protruding structure of the thin-wall circular ring (1).
3. The hoop according to claim 1, wherein the first connector (3) and the second connector (4) are fastened by screws (7).
4. The hoop according to claim 1, wherein the wall thickness of the thin-walled ring (1) is 2-3 mm.
5. The hoop according to claim 1, wherein the distance between the two ends of the opening (2) is 2-3 mm when the first connector (3) and the second connector (4) are not connected.
6. A hoop as claimed in claim 2, wherein the distance between the first and second connectors (3, 4) is 5mm when the first and second connectors (3, 4) are not connected.
7. The hoop according to claim 1, wherein the corners of the thin-walled ring (1), the first connecting member (3) and the second connecting member (4) are provided with chamfers.
8. The hoop according to claim 1, wherein the hoop is stress relieved.
9. The hoop according to claim 1, wherein the thin-walled ring (1), the first connector (3) and the second connector (4) are made of an industrial pure titanium TA2 material.
10. A fish finder transducer, characterized in that a hoop according to any one of claims 1-9 is installed, said hoop being fastened to a metal flange (6) of the fish finder transducer by means of a polyurethane coating (5) of the fish finder transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967302.1A CN112128182A (en) | 2020-09-15 | 2020-09-15 | Anchor ear and fishing detector transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967302.1A CN112128182A (en) | 2020-09-15 | 2020-09-15 | Anchor ear and fishing detector transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112128182A true CN112128182A (en) | 2020-12-25 |
Family
ID=73845822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010967302.1A Pending CN112128182A (en) | 2020-09-15 | 2020-09-15 | Anchor ear and fishing detector transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112128182A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097093A (en) * | 2010-11-26 | 2011-06-15 | 中国科学院声学研究所 | Deepwater wideband spherical transducer |
| CN102537554A (en) * | 2012-02-28 | 2012-07-04 | 江阴中南重工股份有限公司 | High-pressure quick-mount flange |
| CN106646434A (en) * | 2017-01-16 | 2017-05-10 | 中国水产科学研究院东海水产研究所 | Automatic echo detection system fixing device |
| KR20170106604A (en) * | 2016-03-11 | 2017-09-21 | 주식회사 하나에스디 | Standpipe fixed clamp |
| CN208089696U (en) * | 2018-03-21 | 2018-11-13 | 上海滤威过滤系统有限公司 | A kind of heavy device for hooping for filter |
| CN209169920U (en) * | 2018-12-20 | 2019-07-26 | 中国船舶重工集团公司七五0试验场 | A kind of sealing structure of underwater polyethylene optoelectronic composite cable |
| CN210371476U (en) * | 2019-08-30 | 2020-04-21 | 广东粤创电力科技有限公司 | Staple bolt and turn-buckle |
-
2020
- 2020-09-15 CN CN202010967302.1A patent/CN112128182A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097093A (en) * | 2010-11-26 | 2011-06-15 | 中国科学院声学研究所 | Deepwater wideband spherical transducer |
| CN102537554A (en) * | 2012-02-28 | 2012-07-04 | 江阴中南重工股份有限公司 | High-pressure quick-mount flange |
| KR20170106604A (en) * | 2016-03-11 | 2017-09-21 | 주식회사 하나에스디 | Standpipe fixed clamp |
| CN106646434A (en) * | 2017-01-16 | 2017-05-10 | 中国水产科学研究院东海水产研究所 | Automatic echo detection system fixing device |
| CN208089696U (en) * | 2018-03-21 | 2018-11-13 | 上海滤威过滤系统有限公司 | A kind of heavy device for hooping for filter |
| CN209169920U (en) * | 2018-12-20 | 2019-07-26 | 中国船舶重工集团公司七五0试验场 | A kind of sealing structure of underwater polyethylene optoelectronic composite cable |
| CN210371476U (en) * | 2019-08-30 | 2020-04-21 | 广东粤创电力科技有限公司 | Staple bolt and turn-buckle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20201225 |