CN203729971U - Cable head for underground camera - Google Patents
Cable head for underground camera Download PDFInfo
- Publication number
- CN203729971U CN203729971U CN201320889740.6U CN201320889740U CN203729971U CN 203729971 U CN203729971 U CN 203729971U CN 201320889740 U CN201320889740 U CN 201320889740U CN 203729971 U CN203729971 U CN 203729971U
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- CN
- China
- Prior art keywords
- circuit board
- cable head
- cable
- connecting rod
- board support
- 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 - Fee Related
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
本实用新型提供了一种用于连接井下摄像仪和电缆的电缆头。所述的用于井下摄像仪的电缆头包括：依次相连接的下接头、连接杆、电缆头外壳、电缆头帽、以及设置在所述电缆头外壳内部的电路板支架。电路板保护壳套设在所述电路板支架外部；电路板可固定于所述电路板支架的容置部；电缆通过所述电缆头帽内设的电缆固定装置予以固定。所述电路板支架一端设有光纤通道和毛细管通道为电缆头提供电气线路通道和液流通道。本实用新型所提供的用于井下摄像仪的电缆头能够实现在引入电缆后将电源线、光纤和毛细管分别密封接入所述电路板支架，保证通讯线路畅通的同时，还能为井下仪器提供液流通路。
The utility model provides a cable head used for connecting an underground camera and a cable. The cable head for the downhole camera includes: a lower joint, a connecting rod, a cable head shell, a cable head cap, and a circuit board bracket arranged inside the cable head shell, which are sequentially connected. The circuit board protective shell is set on the outside of the circuit board support; the circuit board can be fixed in the accommodating part of the circuit board support; the cable is fixed by the cable fixing device provided in the cable head cap. One end of the circuit board bracket is provided with an optical fiber channel and a capillary channel to provide electrical circuit channels and liquid flow channels for the cable head. The cable head for the downhole camera provided by the utility model can respectively seal the power cord, the optical fiber and the capillary tube into the circuit board bracket after the cable is introduced, so as to ensure the unimpeded communication line and provide fluid flow path.
Description
Technical Field
The utility model relates to a connect the cable head of appearance and cable of making a video recording, especially a cable head for connecting the appearance of making a video recording and cable in the pit, the specially adapted oil well logging technical field.
Background
At present, an underground camera is a testing instrument capable of most visually reflecting the underground conditions of oil, gas and water wells, and a cable head is required to connect a cable with the underground instrument in the testing process of the instrument, so that the integrity and the continuity of the camera shooting process are ensured.
The conventional cable head of connecting camera device and cable only has communication line's connection function, because filths such as the wall of a well can adhere to greasy dirt, wax often, and camera lens of using in the pit can't avoid the stain of these filths to the camera lens, can influence the definition of image. When the camera lens contacts with the dirt, the camera lens cannot be cleaned underground, so that the accuracy of a test result is influenced.
In view of the above-mentioned defects of the known technology, the present designer develops the cable head for an underground camera according to the production design experience of years in this field and the related technical field, while ensuring the smoothness of the communication line, the cable head also has a clear water circulation channel, which provides a liquid flow path for the clear water output by the ground booster pump, so as to realize the cleaning of the camera lens and improve the definition of the underground captured image and the integrity of the image.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connect cable joint of making a video recording appearance and cable, especially according to the functional requirement of the appearance of making a video recording in the pit, provide a cable head for the appearance of making a video recording in the pit, realize with the cable with instrument connection in the pit, respectively for instrument provides the function of electric path, flow path in the pit.
The utility model provides a cable head for camera in pit, include: the lower connector, the connecting rod, the cable head shell, the cable head cap and the circuit board support are sequentially connected, and the circuit board support is arranged inside the cable head shell; the connecting rod is a hollow pipe fitting, and two ends of the connecting rod are respectively connected with the lower joint and the cable head shell in a sealing manner; one end of the circuit board support is connected with the cable head cap, the other end of the circuit board support forms a connecting rod part and penetrates through the connecting rod to extend into the lower joint, a circuit board accommodating part is formed in the middle of the circuit board support, and an optical fiber channel communicated with the circuit board accommodating part is arranged at one end of the circuit board support, which is connected with the cable head cap; a circuit board protective shell is sleeved outside the circuit board accommodating part and is in sealing connection with the circuit board support, and an annular space between the circuit board protective shell and the cable head shell forms a first liquid flow channel; a second liquid flow channel communicated with the first liquid flow channel is formed between the connecting rod part of the circuit board support and the connecting rod; a liquid flow outlet communicated with the second liquid flow channel is formed in the side wall of the connecting rod in the lower joint; the cable head cap is provided with a hollow through channel, and the cable fixing device is arranged in the through channel; and one end of the circuit board support, which is provided with the optical fiber channel, is provided with a capillary channel, and the capillary channel is communicated with the first liquid flow channel.
According to the cable head for the underground camera, one end of the connecting rod part of the circuit board support is connected with the electrical connecting core which can be connected with the underground camera.
The cable head for the underground camera comprises a circuit board support, a connecting rod, a lower joint sealing ring and a lower joint sealing ring, wherein the connecting rod is arranged in the lower joint and protrudes out of one end of the connecting rod, and the lower joint sealing ring can be in sealing connection with the underground camera.
The cable head for the underground camera is characterized in that one end of the optical fiber channel is provided with a first conical hole, a sealing sleeve which can be matched with the inner surface of the first conical hole is embedded in the first conical hole, the sealing sleeve is made of rubber, optical fibers can penetrate through the sealing sleeve and enter the optical fiber channel, a fixing nut provided with an axial through hole is connected to one end of the optical fiber channel in a threaded mode, and the fixing nut can abut against the sealing sleeve to seal the optical fiber channel after being connected with the optical fibers.
As above a cable head for camera in pit, capillary passageway one end is equipped with second toper hole, its intussuseption be equipped with a set of can with the internal surface matched with capillary fixing base and the tight head of deciding of capillary in second toper hole, capillary fixing base and the tight head of deciding of capillary can form fastening sealing connection with the capillary that penetrates, a fixation nut threaded connection who is equipped with axial through hole in capillary passageway one end, fixation nut can with capillary fixing base and the tight head of deciding of capillary with the cooperation department in second toper hole compresses tightly and forms sealing connection.
According to the cable head for the underground camera, one cable connector is fixed at one end of the circuit board support, which is connected with the cable head cap.
According to the cable head for the underground camera, the connecting part of the cable head cap and one end of the circuit board support forms an expanded installation part, and the cable fixing device arranged in the through channel at least comprises the steel wire fixing clamp, the steel wire fixing cap and the circuit plug which are sequentially connected.
According to the cable head for the underground camera, the cable head cap is fixedly connected with the cable head shell through the bolt; the connecting rod is fixedly connected with the cable head shell through a set screw; one end of the circuit board support is in threaded connection with the cable head cap.
According to the cable head for the underground camera, the outer wall of the circuit board support, which is close to one side of the cable head cap, is embedded with the circuit board outer sealing ring which can form sealing connection with the inner wall of the cable head shell; the circuit board support is respectively embedded with circuit board inner sealing rings which can form sealing connection with the outer wall of the circuit board protective shell at the connecting parts of the circuit board support and the two ends of the circuit board protective shell; the connecting rod both ends with the lower clutch with the connecting portion of cable head shell inlay respectively be equipped with can respectively with lower clutch inner wall, cable head shell inner wall constitute sealing connection's lower clutch sealing washer and connecting rod sealing washer.
The utility model provides a cable head for camera in pit, make it can strictly part electric circuit and flow path and realize well sealedly owing to above-mentioned structure, be connected cable and instrument in the pit in the realization, when guaranteeing that communication line is unblocked, the passageway that still has the clear water circulation, realized providing the function of flow path for the clear water of ground booster pump output, can be used to realize the washing to the camera, improve the integrality of the definition and the picture of shooting the image in the pit.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is the utility model discloses a cable head schematic structure for camera in the pit.
Fig. 2 is a partial enlarged view of the installation position of the optical fiber and the capillary tube according to the present invention.
The reference numbers illustrate:
1-lower joint 2-sealing ring 3-connecting rod
4-connecting rod sealing ring 5-set screw 6-cable head shell
7-circuit board protective shell 8-circuit board support 9-sealing ring
10-sealing ring 11-sealing sleeve 121-capillary tube fixing seat
122-capillary fastening head 13-fixing nut 14-cable connector
15-cable head cap 16-bolt 17-steel wire fixing clip
18-steel wire fixing cap 19-circuit plug 20-sealing ring
21-electrical connection core 30-second flow channel 31-liquid flow outlet
70-first fluid channel 81-connecting rod part 82-circuit board accommodating part
83-fiber channel 84-capillary channel 831-first tapered hole
841-second tapered hole 150-mounting portion 151-through passage
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a cable head for camera in pit includes: the cable head comprises a lower connector 1, a connecting rod 3, a cable head shell 6, a cable head cap 15 and a circuit board support 8 arranged inside the cable head shell 6, wherein the lower connector 1, the connecting rod 3, the cable head shell 6 and the cable head cap are sequentially connected. Wherein, the lower joint 1 plays a role of connecting with other underground instruments such as an underground camera; the connecting rod 3 is a hollow pipe fitting, and two ends of the connecting rod are respectively connected with the lower joint 1 and the cable head shell 6 in a sealing mode. One end of the circuit board support 8 is in threaded connection with the cable head cap 15, the other end forms a connecting rod part 81, the connecting rod part 81 penetrates through the connecting rod 3 and extends into the lower connector 1, a circuit board accommodating part 82 is formed in the middle of the circuit board support 8, and the circuit board accommodating part 82 is provided with a connecting hole for fixing a circuit board; the end of the circuit board support 8 that is connected to the cable cap 15 is provided with a fiber channel 83. The circuit board protection shell 7 is sleeved outside the circuit board accommodating portion 82 and is connected with the circuit board support 8 in a sealing manner, so that the circuit board is protected. The annulus between the circuit board protective housing 7 and the cable head housing 6 forms a first fluid flow channel 70. A second liquid flow channel 30 communicated with the first liquid flow channel 70 is formed between the connecting rod part 81 of the circuit board support 8 and the connecting rod 3, and a liquid flow outlet 31 communicated with the second liquid flow channel 30 is arranged on the side wall of the connecting rod 3 positioned in the lower joint 1. The cable head 15 has a hollow through passage 151, and the cable fixing device is disposed in the through passage 151. The end of the circuit board support 8 having the optical fiber channel 83 has a capillary channel 84, and the capillary channel 84 is connected to the first liquid flow channel 70.
Further, the connection rod portion 81 of the circuit board holder 8 is connected to the electrical connection core 21, and the electrical connection with the downhole camera is realized through the electrical connection core 21.
In addition, the connecting rod 81 is located in the lower joint 1 and protrudes out of one end (as shown in fig. 1, the left end) of the connecting rod 3, and at least one annular groove is formed in the connecting rod, and a sealing ring 20 capable of forming a sealing connection with the downhole camera is embedded in the annular groove, so that the function of preventing external fluid from entering an electrical circuit channel is achieved.
Further, a first tapered hole 831 is provided at one end of the optical fiber passage 83, as shown in fig. 2. The optical fiber connector is characterized in that a sealing sleeve 11 which can be matched with the inner surface of the first taper hole 831 is embedded in the optical fiber connector, the sealing sleeve 11 is made of rubber, an optical fiber can penetrate through the sealing sleeve 11 and enter the optical fiber channel 83, so that signal connection with a circuit board is achieved, a fixing nut 13 is provided with an axial through hole and is in threaded connection with one end of the optical fiber channel 83, and the fixing nut 13 can abut against the sealing sleeve 11 to seal the optical fiber channel 83 after the optical fiber is connected.
In addition, be equipped with second taper hole 841 in capillary passage 84 one end, it is equipped with a set of ability and capillary fixed base 121 and the tight head 122 of capillary of the internal surface matched with of second taper hole 841 to embed, be interference fit between capillary fixed base and the tight head of capillary, can form fastening sealing connection with the capillary that penetrates when compressing tightly this fixed base and tight head, another fixation nut 13 threaded connection is in capillary passage 84 one end, and fixation nut 13 can with the cooperation department of capillary fixed base 121 and the tight head 122 of capillary and second taper hole 841 compresses tightly and forms sealing connection.
In the preferred embodiment, a cable connector 14 is secured to the end of the circuit board support 8 that is connected to the cable cap 15.
The cable penetrating into the cable head cap 15 is further divided into three strands, including a power line for supplying power to the cable head, an optical fiber for providing a signal path for the cable head, and a capillary for supplying liquid to the downhole instrument; wherein, the power line is fixed on the cable connector 14 on the circuit board bracket 8 by welding, and then is sealed by a circuit channel and then is connected with the circuit board by the circuit board bracket (which is a conventional technology and is not illustrated in detail); the optical fiber penetrates through the fixing nut 13 and the sealing sleeve 11 and then is inserted into the optical fiber channel 83 to realize the connection with the circuit board, and the fixing nut 13 can push against and compress the sealing sleeve 11 so as to seal the optical fiber channel 83; after passing through another fixing nut 13, the capillary tube for supplying liquid to the downhole instrument penetrates into the capillary tube holder 121 and the capillary tube fastening head 122, and an interference fit is formed between the capillary tube holder 121 and the capillary tube fastening head 122, so that when the holder and the fastening head are pressed, a clamp is formed to fasten the capillary tube, and then the capillary tube is inserted into the capillary tube channel 84 to be connected with the first liquid flow channel 70, and the fixing nut 13 can further press and form a sealing connection at the matching position of the capillary tube holder 121 and the capillary tube fastening head 122 with the second taper hole 841. Therefore, the utility model discloses just, realized the function of sealing up access cable head respectively with power cord, optic fibre, capillary.
Furthermore, the cable head cap 15 is connected to the circuit board support 8 at one end to form an expanded mounting portion 150, and a steel wire fixing clip 17, a steel wire fixing cap 18 and a circuit plug 19 are further sequentially disposed in a through channel 151 of the cable head cap 15, so that the cable can be fixed. In addition, the cable head cap 15 is fixedly connected to the cable head housing 6 by bolts 16. The connecting rod 3 is fixedly connected with the cable head shell 6 through a set screw 5.
Furthermore, the outer wall of the circuit board support 8 near the cable head cap 15 is provided with at least one annular groove, a sealing ring 10 capable of forming a sealing connection with the inner wall of the cable head housing 6 is embedded in the annular groove, and the sealing ring 10 is used for sealing a gap between an external fluid and the first fluid channel 70 of the cable head.
Furthermore, the circuit board support 8 is provided with at least one annular groove on the outer wall of the connecting part of the circuit board support and the two ends of the circuit board protective shell 7 respectively, a sealing ring 9 capable of forming sealing connection with the inner wall of the circuit board protective shell 7 is embedded in the annular groove, and the sealing ring 9 is used for preventing fluid in the fluid channel from entering the circuit board protective shell and playing a role in sealing the electrical circuit channel.
Further, connecting portion that 3 both ends of connecting rod and lower clutch 1 and cable head shell 6 are equipped with an at least ring recess respectively, and it is embedded to be equipped with and to constitute sealing connection's lower clutch sealing washer 2 and connecting rod sealing washer 4 with 1 inner wall of lower clutch and 6 inner walls of cable head shell respectively, and lower clutch sealing washer 2 can prevent that the fluid beyond the cable head from getting into inside the cable head.
As above, the cable head for the underground camera can realize the respective introduction and sealing of a power supply line, a signal line and a liquid supply line, and simultaneously, the good sealing performance is ensured among all the parts, so that the working reliability and stability of the whole cable head are ensured, and the function of providing a liquid flow passage for clean water output by a ground booster pump is realized while the electric line connection of the cable and the underground camera is realized.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (9)
1. A cable head for a downhole camera, the cable head comprising: the lower connector, the connecting rod, the cable head shell, the cable head cap and the circuit board support are sequentially connected, and the circuit board support is arranged inside the cable head shell; the connecting rod is a hollow pipe fitting, and two ends of the connecting rod are respectively connected with the lower joint and the cable head shell in a sealing manner; one end of the circuit board support is connected with the cable head cap, the other end of the circuit board support forms a connecting rod part and penetrates through the connecting rod to extend into the lower joint, a circuit board accommodating part is formed in the middle of the circuit board support, and an optical fiber channel communicated with the circuit board accommodating part is arranged at one end of the circuit board support, which is connected with the cable head cap; a circuit board protective shell is sleeved outside the circuit board accommodating part and is in sealing connection with the circuit board support, and an annular space between the circuit board protective shell and the cable head shell forms a first liquid flow channel; a second liquid flow channel communicated with the first liquid flow channel is formed between the connecting rod part of the circuit board support and the connecting rod; a liquid flow outlet communicated with the second liquid flow channel is formed in the side wall of the connecting rod in the lower joint; the cable head cap is provided with a hollow through channel, and the cable fixing device is arranged in the through channel; and one end of the circuit board support, which is provided with the optical fiber channel, is provided with a capillary channel, and the capillary channel is communicated with the first liquid flow channel.
2. The cable head of claim 1, wherein the circuit board support has an electrical connection core attached to one end of the connection rod portion for connection to the downhole camera.
3. The cable head for a downhole camera according to claim 2, wherein the connecting rod portion of the circuit board support is located in the lower joint and protrudes from one end of the connecting rod to be embedded with a lower joint sealing ring capable of forming a sealing connection with the downhole camera.
4. The cable head of claim 1, wherein a first tapered hole is formed at one end of the optical fiber channel, a sealing sleeve is embedded in the first tapered hole, the sealing sleeve is made of rubber, the optical fiber can pass through the sealing sleeve and enter the optical fiber channel, a fixing nut with an axial through hole is connected to one end of the optical fiber channel in a threaded manner, and the fixing nut can abut against the sealing sleeve to seal the optical fiber channel after the optical fiber is connected to the optical fiber channel.
5. The cable head for a downhole camera according to claim 1, wherein one end of the capillary channel is provided with a second tapered hole, a set of capillary fixing seat and a capillary fastening head which can be matched with the inner surface of the second tapered hole are embedded in the second tapered hole, the capillary fixing seat and the capillary fastening head can form a fastening sealing connection with a penetrated capillary, a fixing nut provided with an axial through hole is connected with one end of the capillary channel in a threaded manner, and the fixing nut can compress and form a sealing connection with the matching position of the capillary fixing seat and the capillary fastening head and the second tapered hole.
6. The cable head for a downhole camera of claim 1, wherein a cable connector is secured to an end of the circuit board support to which the cable head cap is attached.
7. The cable head for a downhole camera according to claim 1, wherein a connection portion of the cable head cap and one end of the circuit board holder is formed as an enlarged diameter mounting portion, and the cable fixing means provided in the through passage comprises at least a wire fixing clip, a wire fixing cap and a circuit plug which are connected in sequence.
8. The cable head for a downhole camera of claim 1, wherein the cable head cap is fixedly attached to the cable head housing by bolts; the connecting rod is fixedly connected with the cable head shell through a set screw; one end of the circuit board support is in threaded connection with the cable head cap.
9. The cable head for a downhole camera according to claim 1, wherein a circuit board outer sealing ring capable of forming a sealing connection with the inner wall of the cable head housing is embedded in an outer wall of the circuit board bracket on a side close to the cable head cap; the circuit board support is respectively embedded with circuit board inner sealing rings which can form sealing connection with the outer wall of the circuit board protective shell at the connecting parts of the circuit board support and the two ends of the circuit board protective shell; the connecting rod both ends with the lower clutch with the connecting portion of cable head shell inlay respectively be equipped with can respectively with the lower clutch inner wall cable head shell inner wall constitutes sealing connection's lower clutch sealing washer and connecting rod sealing washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889740.6U CN203729971U (en) | 2013-12-31 | 2013-12-31 | Cable head for underground camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889740.6U CN203729971U (en) | 2013-12-31 | 2013-12-31 | Cable head for underground camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729971U true CN203729971U (en) | 2014-07-23 |
Family
ID=51200051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320889740.6U Expired - Fee Related CN203729971U (en) | 2013-12-31 | 2013-12-31 | Cable head for underground camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403952A (en) * | 2018-12-14 | 2019-03-01 | 东营职业学院 | Split fit testing device for coiled tubing well logging |
| CN113638707A (en) * | 2021-08-17 | 2021-11-12 | 中国石油化工股份有限公司 | Photoelectric logging tractor |
-
2013
- 2013-12-31 CN CN201320889740.6U patent/CN203729971U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403952A (en) * | 2018-12-14 | 2019-03-01 | 东营职业学院 | Split fit testing device for coiled tubing well logging |
| CN113638707A (en) * | 2021-08-17 | 2021-11-12 | 中国石油化工股份有限公司 | Photoelectric logging tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20211231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |