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
- Authority
- CN
- China
- Prior art keywords
- cable head
- circuit board
- connecting rod
- cable
- 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
The utility model provides a cable head for connecting an underground camera with a cable. The camera head for the underground camera comprises a lower joint, a connecting rod, a cable head shell, a cable head cap and a circuit board bracket inside the cable head shell which are connected in sequence, wherein the circuit board protection shell sleeves the circuit board bracket; the circuit board can be fixed in the holding portion of the circuit board bracket; the cable is fixed through a cable fixing device arranged in the cable head cap; an optical fiber channel and a capillary pipe channel are formed at one end of the circuit board bracket to serve as an electrical circuit channel and a liquid flow channel for the cable head. By adopting the cable head for the underground camera, a power line, an optical fiber and a capillary pipe can be hermetically connected to the circuit board bracket respectively after the introduction of the cable, the smoothness of a communication line is ensured, and the liquid flow channel can be provided for an underground instrument.
Description
Technical field
The utility model is the cable head that connects video camera and cable about a kind of, and especially a kind of cable head for connecting downhole video camera and cable, is specially adapted to petroleum well logging technology field.
Background technology
At present, downhole imaging instrument is a kind of tester that can the most intuitively reflect oil, gas, well downhole conditions, and this instrument, in test process, needs a cable head that cable is connected with downhole instrument, ensures integrality and the continuity of shooting process.
Conventional connection camera head and the cable head of cable only have the linkage function of communication line; because the borehole wall often can adhere to the dirt such as greasy dirt, wax; the pick-up lens using in down-hole cannot be avoided the contamination of these dirts to camera lens, can affect the definition of image.And touch after above-mentioned dirt when camera lens, more cannot clean in down-hole, thereby affect the accuracy of test result.
Because the defect that above-mentioned known technology exists, the design people is according to the Production design experience of being engaged in for many years this area and correlative technology field, develop the cable head for downhole imaging instrument of the present utility model, in ensureing that communication line is unimpeded, also there is clear water circulation passage, for the clear water of ground booster pump output provides flow channel, to realize the cleaning to pick-up lens, improve the definition of down-hole pickup image and the integrality of picture.
Utility model content
The purpose of this utility model is to provide a kind of cable connector that connects video camera and cable, particularly according to the functional requirement of downhole imaging instrument, a kind of cable head for downhole imaging instrument is provided, and realization is connected, is respectively downhole instrument by cable with downhole instrument provides the function of electric path, flow channel.
The cable head for downhole imaging instrument the utility model proposes, comprising: the lower contact, connecting rod, cable head shell, the cable head cap that are connected successively, and be arranged on the circuit board support of described cable head enclosure; Described connecting rod is a hollow pipe fitting, and two ends are connected with described lower contact and described cable head body seal respectively; One end of described circuit board support is connected with described cable head cap, the other end forms connecting rod portion and runs through described connecting rod and extends in described lower contact, the middle part of described circuit board support forms circuit board holding part, and one end that circuit board support is connected with described cable head cap is provided with the optical-fibre channel connecting with described circuit board holding part; One circuit board containment vessel is set in the outside of described circuit board holding part, is tightly connected with described circuit board support, and the annular space between described circuit board containment vessel and described cable head shell forms the first fluid course; Between the connecting rod portion of described circuit board support and described connecting rod, form the second fluid course being connected with described the first fluid course; The described connecting rod sidewall that is positioned at lower contact is provided with the liquid flow export being connected with described the second fluid course; Described cable head cap has the through channel of hollow, and cable fixture is arranged in described through channel; One end that described circuit board support is provided with described optical-fibre channel has a capillary channel, and described capillary channel is connected with described the first fluid course.
Cable head for downhole imaging instrument as above, connecting rod portion one end of described circuit board support is connected with the electrical connection core that can be connected with described downhole imaging instrument.
Cable head for downhole imaging instrument as above, one end that the connecting rod portion of described circuit board support is positioned at lower contact and protrudes from described connecting rod is embedded with and can forms the lower contact sealing ring being tightly connected with described downhole imaging instrument.
Cable head for downhole imaging instrument as above, described optical-fibre channel one end is provided with the first bellmouth, in it, be embedded with the sealing shroud that can match with described the first bellmouth inner surface, described sealing shroud is made up of rubber, optical fiber can enter described optical-fibre channel through described sealing shroud, one hold-doun nut that is provided with axially extending bore is threadedly connected to described optical-fibre channel one end, and described hold-doun nut can be resisted against described sealing shroud and seal described optical-fibre channel after incoming fiber optic.
Cable head for downhole imaging instrument as above, described capillary channel one end is provided with the second bellmouth, in it, be embedded with one group of capillary tube holder that can match with the inner surface of described the second bellmouth and capillary tube tightening head, described capillary tube holder and capillary tube tightening head can form and be fastened and connected with the capillary tube penetrating, one hold-doun nut that is provided with axially extending bore is threadedly connected to described capillary channel one end, described hold-doun nut can compress the cooperation place of described capillary tube holder and capillary tube tightening head and described the second bellmouth form and be tightly connected.
Cable head for downhole imaging instrument as above, a cable connector is fixed on one end that described circuit board support is connected with described cable head cap.
Cable head for downhole imaging instrument as above, the connection, one end of described cable head cap and described circuit board support forms the installation portion of hole enlargement, and the cable fixture being arranged in described through channel at least comprises the bail wire, fixation with steel wire cap and the circuit plug that are connected successively.
Cable head for downhole imaging instrument as above, described cable head cap and described cable head shell are bolted to connection; Described connecting rod is fixedly connected with by holding screw with described cable head shell; Described circuit board support one end is connected with described cable head cap thread.
Cable head for downhole imaging instrument as above, described circuit board support is embedded with and can forms the circuit board exterior seal ring being tightly connected with the inwall of described cable head shell near the outer wall of described cable head cap one side; Described circuit board support is being embedded with respectively and can forming the circuit board inner seal ring being tightly connected with described circuit board containment vessel outer wall with the two ends connecting portion of described circuit board containment vessel; The connecting portion of described connecting rod two ends and described lower contact and described cable head shell is embedded with respectively and can forms with described lower contact inwall, cable head outer casing inner wall the lower contact sealing ring and the connecting rod sealing ring that are tightly connected respectively.
Cable head for downhole imaging instrument provided by the utility model, because making it, said structure electric wiring and flow channel strictly can be separated and realize excellent sealing, when realization is connected cable, ensure with downhole instrument that communication line is unimpeded, also there is the passage of clear water circulation, realize the function that flow channel is provided for the clear water of ground booster pump output, can be used for realizing the cleaning to camera, improve the definition of down-hole pickup image and the integrality of picture.
Brief description of the drawings
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the cable head structural representation of the utility model for downhole imaging instrument.
Fig. 2 is the partial enlarged drawing of optical fiber in the utility model, capillary tube installation site.
Drawing reference numeral explanation:
1-lower contact 2-sealing ring 3-connecting rod
4-connecting rod sealing ring 5-holding screw 6-cable head shell
7-circuit board containment vessel 8-circuit board support 9-sealing ring
10-sealing ring 11-sealing shroud 121-capillary tube holder
A 122-capillary tube tightening 13-hold-doun nut 14-cable connector
15-cable head cap 16-bolt 17-bail wire
18-fixation with steel wire cap 19-circuit plug 20-sealing ring
21-electrical connection core 30-the second fluid course 31-liquid flow export
70-the first fluid course 81-connecting rod 82-of portion circuit board holding part
83-optical-fibre channel 84-capillary channel 831-the first bellmouth
841-the second bellmouth 150-installation portion 151-through channel
Detailed description of the invention
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast brief description of the drawings detailed description of the invention of the present utility model.
As shown in Figure 1, the cable head for downhole imaging instrument the utility model proposes comprises: the lower contact 1, connecting rod 3, cable head shell 6, the cable head cap 15 that are connected successively, and be arranged on the circuit board support 8 of cable head shell 6 inside.Wherein, lower contact 1 is played and down-hole other instruments effect that for example downhole imaging instrument is connected; Connecting rod 3 is a hollow pipe fitting, and two ends are tightly connected with lower contact 1 and cable head shell 6 respectively.One end of circuit board support 8 is threaded with cable head cap 15, the other end forms connecting rod portion 81, this connecting rod portion 81 runs through connecting rod 3 and extends in lower contact 1, and the middle part of circuit board support 8 forms circuit board holding part 82, and circuit board holding part 82 is provided with connecting hole for fixing circuit board; One end that circuit board support 8 is connected with cable head cap 15 is provided with optical-fibre channel 83.Circuit board containment vessel 7 is set in the outside of circuit board holding part 82, is tightly connected with circuit board support 8, plays the effect of holding circuit plate.Annular space between circuit board containment vessel 7 and cable head shell 6 forms the first fluid course 70.Between the connecting rod portion 81 of circuit board support 8 and connecting rod 3, form the second fluid course 30 being connected with the first fluid course 70, connecting rod 3 sidewalls that are positioned at lower contact 1 are provided with the liquid flow export 31 being connected with the second fluid course 30.Cable head cap 15 has the through channel 151 of hollow, and cable fixture is arranged in through channel 151.One end that circuit board support 8 is provided with optical-fibre channel 83 has capillary channel 84, and capillary channel 84 is connected with the first fluid course 70.
Further, the connecting rod portion 81 of circuit board support 8 is connected with electrical connection core 21, can be realized with the electric wiring of downhole imaging instrument and being connected by this electrical connection core 21.
In addition, connecting rod portion 81 is arranged in lower contact 1 and protrudes from outside, one end of connecting rod 3 (as Fig. 1 is shown as left end) and is provided with at least one ring groove, in it, be embedded with and can form the sealing ring 20 being tightly connected with described downhole imaging instrument, and then play and prevent that extraneous fluid from entering the effect of electric wiring passage.
Further, be provided with the first bellmouth 831 in optical-fibre channel 83 one end, as shown in Figure 2.In it, be embedded with the sealing shroud 11 that can match with the first bellmouth 831 inner surfaces, described sealing shroud 11 is made up of rubber, optical fiber can enter optical-fibre channel 83 through sealing shroud 11, be connected with the signal of circuit board thereby realize, one hold-doun nut 13 is provided with axially extending bore and is threadedly connected to optical-fibre channel 83 one end, and hold-doun nut 13 can be resisted against sealing shroud 11 and seal described optical-fibre channel 83 after incoming fiber optic.
In addition, be provided with the second bellmouth 841 in capillary channel 84 one end, in it, be embedded with one group of capillary tube holder 121 that can match with the inner surface of the second bellmouth 841 and capillary tube tightening 122, between described capillary tube holder and capillary tube tightening head, it is interference fit, in the time compressing this holder and tightening, can form and be fastened and connected with the capillary tube penetrating, another hold-doun nut 13 is threadedly connected to capillary channel 84 one end, hold-doun nut 13 can compress the cooperation place of described capillary tube holder 121 and capillary tube tightening 122 and the second bellmouth 841 form and be tightly connected.
In embodiment preferably, a cable connector 14 is fixed on one end that circuit board support 8 is connected with cable head cap 15.
The cable that penetrates cable head cap 15 is further divided into three strands, is included as the power line of cable head power supply, provides the optical fiber of signal path and the capillary tube for downhole instrument feed flow for cable head; Wherein, power line is first by being fixedly welded on the cable connector 14 on circuit board support 8, with after after a line channel sealing, enter circuit board support (this is routine techniques, holds and does not repeat, and figure does not show) and be connected with circuit board; Described optical fiber is through hold-doun nut 13 and the rear insertion optical-fibre channel 83 of sealing shroud 11, realize and being connected of circuit board, and hold-doun nut 13 can contacts and compression seal overlap 11 and then seal described optical-fibre channel 83; For the capillary tube of downhole instrument feed flow is passing after another hold-doun nut 13, penetrate capillary tube holder 121 and capillary tube tightening 122, between capillary tube holder 121 and capillary tube tightening 122, it is interference fit, therefore in the time being fixed seat and tightening, just can form a clip is anchored on capillary tube, insert capillary channel 84 with postcapillary and be connected with the first fluid course 70, hold-doun nut 13 can be further compresses the cooperation place of described capillary tube holder 121 and capillary tube tightening 122 and the second bellmouth 841 form and is tightly connected.So far, the utility model has just been realized the function that power line, optical fiber, capillary tube is sealed respectively to access cable head.
Further, described cable head cap 15 is connected the installation portion 150 of one end formation hole enlargement with circuit board support 8, in the through channel 151 of cable head cap 15, be also provided with successively bail wire 17, fixation with steel wire cap 18 and circuit plug 19, fixing into cable can achieve a butt joint, this structure is routine techniques, is not repeated herein.In addition, cable head cap 15 is fixedly connected with by bolt 16 with cable head shell 6.Connecting rod 3 is fixedly connected with by holding screw 5 with cable head shell 6.
Further, circuit board support 8 is provided with at least one ring groove near the outer wall of cable head cap 15 1 sides, in it, be embedded with and can form the sealing ring 10 being tightly connected with the inwall of cable head shell 6, sealing ring 10 is for sealing the gap between extraneous fluid and cable head the first fluid course 70.
Further; circuit board support 8 with circuit board containment vessel 7 coupling part, two ends outer walls on be respectively equipped with at least one ring groove; in it, be embedded with and can form the sealing ring 9 being tightly connected with circuit board containment vessel 7 inwalls; sealing ring 9 enters circuit board containment vessel for preventing fluid course inner fluid, plays the effect of the electric line channel of sealing.
Further, the connecting portion of connecting rod 3 two ends and lower contact 1 and cable head shell 6 is provided with respectively at least one ring groove, in it, be embedded with and can form with lower contact 1 inwall and cable head shell 6 inwalls the lower contact sealing ring 2 and the connecting rod sealing ring 4 that are tightly connected respectively, lower contact sealing ring 2 can prevent that the fluid beyond cable head from entering cable head inside.
Cable head for downhole imaging instrument as above, can realize introducing respectively and the sealing of power circuit, signal line and feed flow circuit, between each parts, all ensured good sealing simultaneously, and then the reliability and stability of whole cable head work are guaranteed, in realizing cable and being connected with the electric wiring of downhole imaging instrument, realize the function that flow channel is provided for the clear water of ground booster pump output.
The foregoing is only the schematic detailed description of the invention of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the amendment under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (9)
1. the cable head for downhole imaging instrument, it is characterized in that, the described cable head for downhole imaging instrument comprises: the lower contact, connecting rod, cable head shell, the cable head cap that are connected successively, and be arranged on the circuit board support of described cable head enclosure; Described connecting rod is a hollow pipe fitting, and two ends are connected with described lower contact and described cable head body seal respectively; One end of described circuit board support is connected with described cable head cap, the other end forms connecting rod portion and runs through described connecting rod and extends in described lower contact, the middle part of described circuit board support forms circuit board holding part, and one end that circuit board support is connected with described cable head cap is provided with the optical-fibre channel connecting with described circuit board holding part; One circuit board containment vessel is set in the outside of described circuit board holding part, is tightly connected with described circuit board support, and the annular space between described circuit board containment vessel and described cable head shell forms the first fluid course; Between the connecting rod portion of described circuit board support and described connecting rod, form the second fluid course being connected with described the first fluid course; The described connecting rod sidewall that is positioned at lower contact is provided with the liquid flow export being connected with described the second fluid course; Described cable head cap has the through channel of hollow, and cable fixture is arranged in described through channel; One end that described circuit board support is provided with described optical-fibre channel has a capillary channel, and described capillary channel is connected with described the first fluid course.
2. the cable head for downhole imaging instrument as claimed in claim 1, is characterized in that, connecting rod portion one end of described circuit board support is connected with the electrical connection core that can be connected with described downhole imaging instrument.
3. the cable head for downhole imaging instrument as claimed in claim 2, it is characterized in that, one end that the connecting rod portion of described circuit board support is positioned at lower contact and protrudes from described connecting rod is embedded with and can forms the lower contact sealing ring being tightly connected with described downhole imaging instrument.
4. the cable head for downhole imaging instrument as claimed in claim 1, it is characterized in that, described optical-fibre channel one end is provided with the first bellmouth, in it, be embedded with the sealing shroud that can match with described the first bellmouth inner surface, described sealing shroud is made up of rubber, optical fiber can enter described optical-fibre channel through described sealing shroud, one hold-doun nut that is provided with axially extending bore is threadedly connected to described optical-fibre channel one end, and described hold-doun nut can be resisted against described sealing shroud and seal described optical-fibre channel after incoming fiber optic.
5. the cable head for downhole imaging instrument as claimed in claim 1, it is characterized in that, described capillary channel one end is provided with the second bellmouth, in it, be embedded with one group of capillary tube holder that can match with the inner surface of described the second bellmouth and capillary tube tightening head, described capillary tube holder and capillary tube tightening head can form and be fastened and connected with the capillary tube penetrating, one hold-doun nut that is provided with axially extending bore is threadedly connected to described capillary channel one end, described hold-doun nut can compress the cooperation place of described capillary tube holder and capillary tube tightening head and described the second bellmouth form and be tightly connected.
6. the cable head for downhole imaging instrument as claimed in claim 1, is characterized in that, a cable connector is fixed on one end that described circuit board support is connected with described cable head cap.
7. the cable head for downhole imaging instrument as claimed in claim 1, it is characterized in that, the connection, one end of described cable head cap and described circuit board support forms the installation portion of hole enlargement, and the cable fixture being arranged in described through channel at least comprises the bail wire, fixation with steel wire cap and the circuit plug that are connected successively.
8. the cable head for downhole imaging instrument as claimed in claim 1, is characterized in that, described cable head cap and described cable head shell are bolted to connection; Described connecting rod is fixedly connected with by holding screw with described cable head shell; Described circuit board support one end is connected with described cable head cap thread.
9. the cable head for downhole imaging instrument as claimed in claim 1, is characterized in that, described circuit board support is embedded with and can forms the circuit board exterior seal ring being tightly connected with the inwall of described cable head shell near the outer wall of described cable head cap one side; Described circuit board support is being embedded with respectively and can forming the circuit board inner seal ring being tightly connected with described circuit board containment vessel outer wall with the two ends connecting portion of described circuit board containment vessel; The connecting portion of described connecting rod two ends and described lower contact and described cable head shell is embedded with respectively and can forms with described lower contact inwall, described cable head outer casing inner wall the lower contact sealing ring and the connecting rod sealing ring that are tightly connected respectively.
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 | The seperated cooperation test device of 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 well 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 | The seperated cooperation test device of 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 well 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20211231 |