CN110635408A - Protection device and method for underwater tree system cable and umbilical cable in deep water test operation - Google Patents
Protection device and method for underwater tree system cable and umbilical cable in deep water test operation Download PDFInfo
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- CN110635408A CN110635408A CN201910869410.2A CN201910869410A CN110635408A CN 110635408 A CN110635408 A CN 110635408A CN 201910869410 A CN201910869410 A CN 201910869410A CN 110635408 A CN110635408 A CN 110635408A
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- cable
- umbilical
- protection device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
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- Engineering & Computer Science (AREA)
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a protection device for a cable and an umbilical cable of an underwater tree system for deep water test operation, which comprises: the first holding clamp body is arranged on one side of the operation pipe column, and the inner side of the first holding clamp body is provided with a semicircular curved surface matched with the outer wall of the operation pipe column; one end of the first clamp body is provided with a first connecting part, and the other end of the first clamp body is provided with a second connecting part; the second clamp body and the first clamp body are symmetrically arranged on the other side of the operation pipe column, and the inner side of the second clamp body is provided with a semicircular curved surface matched with the outer wall of the operation pipe column; one end of the second clamp body is provided with a third connecting part, and the other end of the second clamp body is provided with a fourth connecting part; the first connecting part is rotatably connected with the third connecting part; the second connecting part and the fourth connecting part can be selectively locked or separated; the umbilical cable fixing groove is formed in the inner side wall of the second clamp body; and the cable fixing grooves are formed in the inner side wall of the second clamp body and are symmetrically distributed on two sides of the umbilical cable fixing grooves.
Description
Technical Field
The invention belongs to the technical field of petroleum and natural gas exploration and testing, and particularly relates to a protection device and a protection method for underwater tree system cables and umbilical cables in deepwater testing operation.
Background
At present, with the continuous development of offshore oil and gas testing range in deep water, the operation safety requirement is higher and higher, and in the face of deep water testing underwater tree operation, an umbilical cable is longer, the outer diameter is larger, and the weight is heavier; the conventional method for binding and fixing the umbilical cable for shallow water test cannot achieve the protection effect on the umbilical cable.
In a conventional shallow water test, a common binding and fixing method generally uses a plastic nylon cable tie, and the umbilical cable is fixed by matching with a 3M waterproof adhesive tape. The method generally aims at the umbilical cable fixing mode that the water depth is less than 200 meters, the number of cores of hydraulic control pipelines is less than or equal to 4 cores, and the weight in the air is less than 1600 kg/km. In deep water operation, the length of the umbilical cable is generally 1500-2800 m, the number of hydraulic control pipelines is increased to 6 cores, 3 19-core cables are added, and the weight in the air is about 4550 kg/km. The conventional binding mode can not meet the use requirements of deepwater operation no matter in the aspects of running length, umbilical cable outer diameter, weight and the like.
Disclosure of Invention
The invention provides a protection device for a cable and an umbilical cable of an underwater tree system for deep water test operation, and aims to play a good protection role on the umbilical cable and the cable in the deep water operation and prevent the umbilical cable and the cable from sliding down or falling off.
The invention provides a protection method for a cable and an umbilical cable of an underwater tree system for deep water test operation, and aims to effectively control the locking degree of a protection device in the installation process of the protection device so as to ensure that the protection device can better protect the umbilical cable and the cable.
The invention provides a protection method for a cable and an umbilical cable of an underwater tree system for deep water test operation, which can monitor the state of a protection device to obtain the safety coefficient of the protection device when the protection device is put into water, and judge the safety state of the protection device according to the safety coefficient of the protection device so as to find the potential safety hazard that the umbilical cable and the cable slide down or fall off in time.
The technical scheme provided by the invention is as follows:
a protection device for deep water test operation underwater tree system cables and umbilicals, comprising:
the first holding clamp body is arranged on one side of the operation pipe column, and a semicircular curved surface matched with the outer wall of the operation pipe column is arranged on the inner side of the first holding clamp body; one end of the first clamp body is provided with a first connecting part, and the other end of the first clamp body is provided with a second connecting part;
the second clamp body and the first clamp body are symmetrically arranged on the other side of the operation pipe column, and the inner side of the second clamp body is provided with a semicircular curved surface matched with the outer wall of the operation pipe column; one end of the second clamp body is provided with a third connecting part, and the other end of the second clamp body is provided with a fourth connecting part;
the first connecting part is rotatably connected with the third connecting part; the second connecting part and the fourth connecting part can be selectively locked or separated;
the umbilical cable fixing groove is formed in the inner side wall of the second clamp body;
the cable fixing grooves are formed in the inner side wall of the second clamp body and are symmetrically distributed on two sides of the umbilical cable fixing groove;
the umbilical cable fixing groove and the cable fixing groove are respectively formed in the axial direction of the operation tubular column.
Preferably, the first connecting part and the third connecting part are rotatably connected through a connecting block;
the first connecting part is provided with two first connecting arms which are arranged at intervals, and a first gap is formed between the two first connecting arms; the third connecting part is provided with two second connecting arms which are arranged at intervals, and a second gap is formed between the two second connecting arms;
the two ends of the connecting block are respectively arranged in the first gap and the second gap and are respectively connected with the first connecting arm and the second connecting arm in a rotating mode through rotating shafts.
Preferably, the second connecting part and the fourth connecting part are locked by a locking mechanism;
wherein the locking mechanism comprises:
one end of the screw rod is rotatably connected with the fourth connecting part, and the other end of the screw rod penetrates through the second connecting part and extends to the outer side of the second connecting part; and
and the nut is arranged at one end of the screw rod in a matching manner and is abutted against the outer side of the second connecting part.
Preferably, the shape of the umbilical cable fixing groove is matched with the outer wall of the umbilical cable; the shape of the cable fixing groove is matched with that of the outer wall of the cable; and rubber lining layers are arranged in the umbilical cable fixing groove and the cable fixing groove.
A protection method for a cable and an umbilical of an underwater tree system for deep water test operation, which uses the protection device for the cable and the umbilical of the underwater tree system for deep water test operation, comprises the following steps:
installing an umbilical cable in an umbilical cable fixing groove, and respectively placing a plurality of cables in the cable fixing grooves; mounting a protection device for a cable and an umbilical cable of the underwater tree system for deepwater test operation on an operation tubular column; in the installation process, the pressure of the second clamp body on the umbilical cable is monitored in real time, and when the pressure reaches a pressure threshold value, the locking process of the second connecting part and the fourth connecting part is completed;
wherein the pressure threshold is:
in the formula, F0To a set reference pressureForce value, h is the depth of the protector in water, h0Is a set reference depth value; m is the total mass of the umbilical and cable, m0Is a baseline value for the total mass of the umbilical and cable.
Preferably, a plurality of protection devices are arranged on the same operation tubular column, and the distance between every two adjacent protection devices is 3-5 m.
Preferably, the protection method for the cable and the umbilical cable of the underwater tree system for deep water test operation further comprises:
after the protection device enters water, judging whether the protection device is in a safe state or not according to the safety coefficient of the protection device; wherein, protection device's factor of safety does:
where eta is the correction coefficient, T is the ambient temperature at which the protection device is located, and T is0Is a set reference temperature; Δ D is the relative displacement in the vertical direction between the protection device and the umbilical over a set time, Δ D0Is a set reference relative displacement; h is the depth of the protection device in water, h0Is a set reference depth value;
wherein, when x is more than or equal to 0.6, the safety state of the protection device is judged to be better; and when the chi is less than 0.6, judging that the protection device is in a poor safety state.
Preferably, the protection method for the cable and the umbilical cable of the underwater tree system for deep water test operation further comprises: determining a correction coefficient eta according to the underwater penetration depth of the protection device; wherein:
when h is less than or equal to 2000m, eta is 0.23-0.25;
when h is more than 2000m, eta is 0.20-0.22.
The invention has the beneficial effects that:
the protection device for the cable and the umbilical cable of the underwater tree system for the deepwater test operation can well protect the umbilical cable and the cable in the deepwater operation and prevent the umbilical cable and the cable from sliding down or falling off.
The protection method for the underwater tree system cable and the umbilical cable in the deepwater test operation can effectively control the locking degree of the protection device in the installation process of the protection device so as to ensure that the protection device can better protect the umbilical cable and the umbilical cable.
According to the protection method for the cable and the umbilical cable of the underwater tree system for the deepwater test operation, provided by the invention, when the protection device is put into water, the state of the protection device can be monitored to obtain the safety coefficient of the protection device, and the safety state of the protection device is judged according to the safety coefficient of the protection device, so that the potential safety hazard that the umbilical cable and the cable slide down or fall off can be found in time.
Drawings
Fig. 1 is a schematic structural diagram of a protection device for a cable and an umbilical cable of an underwater tree system for deep water test operation according to the invention.
Fig. 2 is an exploded schematic view of the protection device for the cable and the umbilical cable of the underwater tree system for deep water test operation according to the invention.
Fig. 3 is a schematic structural diagram of a second card protection body according to the present invention.
FIG. 4 is a schematic diagram of the protection device for deep water test operation underwater tree system cable and umbilical cable of the present invention in cooperation with an operation pipe string.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 4, the present invention provides a protection device for underwater tree system cable and umbilical cable in deep water test operation, which mainly comprises: the clamp comprises a first clamp body 110, a second clamp body 120, an umbilical cable fixing groove 130 and a plurality of cable fixing grooves 140.
The first clamp body 110 is arranged on one side of the operation pipe column 100, and the inner side of the first clamp body 110 is provided with a semicircular curved surface matched with the outer wall of the operation pipe column 100; one end of the first clasping body 110 has a first connecting portion 111, and the other end has a second connecting portion 112. The second clasping body 120 and the first clasping body 110 are symmetrically arranged at the other side of the operation pipe column 100, and the inner side of the second clasping body 120 is provided with a semicircular curved surface matched with the outer wall of the operation pipe column 100; one end of the second clasping body 120 is provided with a third connecting part 121, and the other end is provided with a fourth connecting part 122; the first connecting portion 111 is rotatably connected with the third connecting portion 121; the second connection portion 112 and the fourth connection portion 122 can be selectively locked or separated. The umbilical cable fixing groove 130 is formed on the inner side wall of the second clamp body 120 along the axial direction of the operation string 110; the plurality of cable fixing grooves 140 are formed in the inner side wall of the second clamp body 120, and the plurality of cable fixing grooves 140 are symmetrically distributed on two sides of the umbilical cable fixing groove 130; the cable fixing grooves 140 are respectively opened in the axial direction of the work string 100.
In the present embodiment, the first connection portion 111 and the third connection portion 121 are rotatably connected by the connection block 150; the first connecting portion 111 includes two connecting arms 111a and 111b arranged at intervals in the vertical direction, and a gap 111c is formed between the connecting arm 111a and the connecting arm 111 b; the third connecting portion 121 includes two connecting arms 121a, 121b arranged at intervals in the vertical direction, and a gap 121c is formed between the connecting arm 121a and the connecting arm 121 b; the height of the gap 111c and the gap 121c is the same. The two ends of the connecting block 150 are respectively arranged in the gap 111c and the gap 121c, and are respectively in rotary connection with the connecting arms 111a and 111b and the connecting arms 121a and 121b through the rotating shafts 111d and 121 d; the first connection portion 111 and the third connection portion 121 can rotate relative to the connection block 150.
The second connecting part 112 and the fourth connecting part 122 are locked by a locking mechanism; the second connecting portion 112 includes two connecting arms 112a and 112b spaced apart from each other in the vertical direction, and a gap 112c is formed between the connecting arms 112a and 112 b; the fourth connecting portion 122 includes two connecting arms 122a, 122b arranged at an interval in the vertical direction, and a gap 122c is formed between the connecting arm 122a and the connecting arm 122 b; gap 112c and gap 122c are the same height. The locking mechanism includes: a screw 160, one end of which has a drum-shaped connecting portion 161, the drum-shaped connecting portion 161 is disposed in the gap 122c, the center of the drum-shaped connecting portion 161 has a through hole, and is rotatably sleeved on the rotating shaft 122d through the through hole, and two ends of the rotating shaft 122d are respectively fixed in the two connecting arms 122a and 122b, so that the screw 160 forms a rotating connection with the two connecting arms 122a and 122b of the fourth connecting portion 122 through the rotating shaft 122 d; the other end of the screw 160 passes through the gap 112c and extends to the outside of the second connecting portion 112 (the side away from the fourth connecting portion 122); the locking mechanism further includes a nut 170 matingly disposed at one end of the screw 160 and abutting the outside of the second coupling portion 112.
As a further preference, the shape of the umbilical cable fixing groove 130 is matched with the outer wall of the umbilical cable, so that the umbilical cable is tightly attached to the umbilical cable fixing groove 130; the shape of the cable fixing groove 140 is matched with the outer wall of the cable, so that the cable is tightly attached to the cable fixing groove 140; thereby achieving better fixing effect. In addition, rubber lining layers are respectively arranged in the umbilical cable fixing groove 130 and the cable fixing groove 140, so that a large friction force can be generated between the umbilical cable and the cable, the fixing effect is further improved, meanwhile, the metal card protection body can be prevented from damaging the umbilical cable or the surface layer of the cable, and the umbilical cable and the cable can be well protected; the rubber lining layer can be made of ethylene propylene rubber, so that the friction force is increased, and the effects of insulation and corrosion resistance are achieved.
The invention also provides a protection method for the underwater tree system cable and the umbilical cable for the deep water test operation, and the protection device for the underwater tree system cable and the umbilical cable for the deep water test operation comprises the following steps: installing an umbilical cable in an umbilical cable fixing groove, and respectively placing a plurality of cables in the cable fixing grooves; mounting a protection device for a cable and an umbilical cable of the underwater tree system for deepwater test operation on an operation tubular column; through the mode, the umbilical cable and the cable are fixed on the operation tubular column, and the umbilical cable and the cable can be well fixed and protected. Meanwhile, a pressure sensor is installed on the umbilical cable fixing groove 130 and used for detecting the pressure of the second clamp body 120 on the umbilical cable, the pressure sensor transmits a detected pressure signal to the controller through a communication cable, and meanwhile, the controller is prestored with a set depth for the protection device to be placed in water. In the installation process of the protection device, the pressure of the second clamp body on the umbilical cable is monitored underwater in real time, and when the detected pressure reaches a pressure threshold value, the locking process of the second connecting part and the fourth connecting part is completed;
wherein the pressure threshold is:
in the formula, F0A set reference pressure value, h a set depth of the protector in the water, h0Is a set reference depth value; m is the total mass of the umbilical and cable (in air), m0Is a baseline value for the total mass of the umbilical and cable. Empirically, set h0＝2000～2500m，m0＝3000～3500kg，F0＝30～50N。
By means of the method, the locking degree of the locking device is controlled, the umbilical cable and the cable can be effectively fixed, and meanwhile the umbilical cable and the cable are prevented from being excessively extruded to cause damage to the umbilical cable or the cable.
In order to play a better fixing role, a plurality of protection devices are arranged on the same operation tubular column, and the distance between every two adjacent protection devices is 3-5 m.
In another embodiment, the method further comprises: after the protection device enters water (enters a working state), judging whether the protection device is in a safe state or not according to the safety coefficient of the protection device; wherein, protection device's factor of safety does:
where eta is the correction coefficient, T is the ambient temperature at which the protection device is located, and T is0To a set reference temperature, T02.8-3.2 ℃; Δ D is in the vertical direction between the protection device and the umbilical within 24 hoursCumulative relative displacement, Δ D0For a set reference relative displacement, Δ D00.04-0.05 cm; h' is the actual underwater penetration depth of the protection device, h0Is the set reference depth value.
When x is larger than or equal to 0.6, the safety state of the protection device is judged to be good, and the umbilical cable and the cable are free of the risk of slipping; when chi < 0.6, it is relatively poor to judge that protection device is in safe state, and umbilical cable and cable probably slide down or drop, and at this moment, accessible early warning device sends the early warning, later need artifical judgement whether need take further safeguard measure.
Wherein, temperature T can monitor through setting up temperature sensor in protection device department, and delta D monitors through installing displacement sensor in protection device department, and the degree of depth that protection device actually went into the aquatic is monitored through depth sensor, and temperature sensor and displacement sensor pass through the communication cable and upload the data of gathering to underwater operation monitored control system, are carried out factor of safety and calculate and send the early warning by underwater operation monitored control system. The communication cable can be fixed by the protection device in a cable fixing mode.
In another embodiment, the method further comprises: determining a correction coefficient eta according to the underwater penetration depth of the protection device; so as to improve the accuracy of the judgment result, wherein: when h is less than or equal to 2000m, eta is 0.23-0.25; when h is more than 2000m, eta is 0.20-0.22.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. A protection device for underwater tree system cables and umbilical cables in deep water test operation is characterized by comprising:
the first holding clamp body is arranged on one side of the operation pipe column, and a semicircular curved surface matched with the outer wall of the operation pipe column is arranged on the inner side of the first holding clamp body; one end of the first clamp body is provided with a first connecting part, and the other end of the first clamp body is provided with a second connecting part;
the second clamp body and the first clamp body are symmetrically arranged on the other side of the operation pipe column, and the inner side of the second clamp body is provided with a semicircular curved surface matched with the outer wall of the operation pipe column; one end of the second clamp body is provided with a third connecting part, and the other end of the second clamp body is provided with a fourth connecting part;
the first connecting part is rotatably connected with the third connecting part; the second connecting part and the fourth connecting part can be selectively locked or separated;
the umbilical cable fixing groove is formed in the inner side wall of the second clamp body;
the cable fixing grooves are formed in the inner side wall of the second clamp body and are symmetrically distributed on two sides of the umbilical cable fixing groove;
the umbilical cable fixing groove and the cable fixing groove are respectively formed in the axial direction of the operation tubular column.
2. The protection device for deep water test operation underwater tree system cables and umbilical cables as claimed in claim 1, wherein the first connection part and the third connection part are rotatably connected through a connection block;
the first connecting part is provided with two first connecting arms which are arranged at intervals, and a first gap is formed between the two first connecting arms; the third connecting part is provided with two second connecting arms which are arranged at intervals, and a second gap is formed between the two second connecting arms;
the two ends of the connecting block are respectively arranged in the first gap and the second gap and are respectively connected with the first connecting arm and the second connecting arm in a rotating mode through rotating shafts.
3. The protection device for deep water test operation underwater tree system cables and umbilical cables as claimed in claim 2, characterized in that the second connection part and the fourth connection part are locked by a locking mechanism;
wherein the locking mechanism comprises:
one end of the screw rod is rotatably connected with the fourth connecting part, and the other end of the screw rod penetrates through the second connecting part and extends to the outer side of the second connecting part; and
and the nut is arranged at one end of the screw rod in a matching manner and is abutted against the outer side of the second connecting part.
4. The protection device for deep water test operation underwater tree system cables and umbilical cables as claimed in claim 3, wherein the shape of the umbilical cable fixing groove matches with the outer wall of the umbilical cable; the shape of the cable fixing groove is matched with that of the outer wall of the cable; and rubber lining layers are arranged in the umbilical cable fixing groove and the cable fixing groove.
5. A method for protecting a cable and an umbilical of an underwater tree system for deep water test work using the device for protecting a cable and an umbilical of an underwater tree system for deep water test work according to any one of claims 1 to 4, comprising:
installing an umbilical cable in an umbilical cable fixing groove, and respectively placing a plurality of cables in the cable fixing grooves; mounting a protection device for a cable and an umbilical cable of the underwater tree system for deepwater test operation on an operation tubular column; in the installation process, the pressure of the second clamp body on the umbilical cable is monitored in real time, and when the pressure reaches a pressure threshold value, the locking process of the second connecting part and the fourth connecting part is completed;
wherein the pressure threshold is:
in the formula, F0For a set reference pressure value, h is the depth of the protector in the water，h0Is a set reference depth value; m is the total mass of the umbilical and cable, m0Is a baseline value for the total mass of the umbilical and cable.
6. The method for protecting the cable and the umbilical of the underwater tree system for deep water test operation according to claim 5, wherein a plurality of the protecting devices are provided, and the distance between two adjacent protecting devices is 3-5 m.
7. The method for protecting deep water test operation subsea tree system cables and umbilicals of claim 6, further comprising:
after the protection device enters water, judging whether the protection device is in a safe state or not according to the safety coefficient of the protection device; wherein, protection device's factor of safety does:
where eta is the correction coefficient, T is the ambient temperature at which the protection device is located, and T is0Is a set reference temperature; Δ D is the relative displacement in the vertical direction between the protection device and the umbilical over a set time, Δ D0Is a set reference relative displacement; h is the depth of the protection device in water, h0Is a set reference depth value;
wherein, when x is more than or equal to 0.6, the safety state of the protection device is judged to be better; and when the chi is less than 0.6, judging that the protection device is in a poor safety state.
8. The method for protecting deep water test operation subsea tree system cables and umbilicals of claim 7, further comprising: determining a correction coefficient eta according to the underwater penetration depth of the protection device; wherein:
when h is less than or equal to 2000m, eta is 0.23-0.25;
when h is more than 2000m, eta is 0.20-0.22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910869410.2A CN110635408B (en) | 2019-09-16 | 2019-09-16 | Protection device and method for underwater tree system cable and umbilical cable in deep water test operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910869410.2A CN110635408B (en) | 2019-09-16 | 2019-09-16 | Protection device and method for underwater tree system cable and umbilical cable in deep water test operation |
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| Publication Number | Publication Date |
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| CN110635408A true CN110635408A (en) | 2019-12-31 |
| CN110635408B CN110635408B (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910869410.2A Active CN110635408B (en) | 2019-09-16 | 2019-09-16 | Protection device and method for underwater tree system cable and umbilical cable in deep water test operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690810A (en) * | 2021-08-19 | 2021-11-23 | 上海中车艾森迪海洋装备有限公司 | Umbilical cable management system suitable for deep sea mining |
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| CN204603823U (en) * | 2015-03-11 | 2015-09-02 | 邯郸市红光粮油机械有限公司 | Face roller processing rolling clamp |
| CN205667182U (en) * | 2016-06-07 | 2016-11-02 | 青川县宏宇猕猴桃种植专业合作社 | Actinidia tree does fixing device |
| CN108732706A (en) * | 2018-09-05 | 2018-11-02 | 陕西延长石油国际勘探开发工程有限公司 | Underground optical cable protector |
| CN209358171U (en) * | 2019-03-20 | 2019-09-06 | 安徽巨森电器有限公司 | A kind of electric wire fixed mechanism of the voltage protector convenient for adjusting |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2629893A1 (en) * | 1988-04-11 | 1989-10-13 | Sofanou Sa | Connection and fixing component for ringed tubes |
| CN204603823U (en) * | 2015-03-11 | 2015-09-02 | 邯郸市红光粮油机械有限公司 | Face roller processing rolling clamp |
| CN205667182U (en) * | 2016-06-07 | 2016-11-02 | 青川县宏宇猕猴桃种植专业合作社 | Actinidia tree does fixing device |
| CN108732706A (en) * | 2018-09-05 | 2018-11-02 | 陕西延长石油国际勘探开发工程有限公司 | Underground optical cable protector |
| CN209358171U (en) * | 2019-03-20 | 2019-09-06 | 安徽巨森电器有限公司 | A kind of electric wire fixed mechanism of the voltage protector convenient for adjusting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113690810A (en) * | 2021-08-19 | 2021-11-23 | 上海中车艾森迪海洋装备有限公司 | Umbilical cable management system suitable for deep sea mining |
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| CN110635408B (en) | 2020-08-07 |
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