CN209358194U - A kind of stainless-steel pipe cable lightning prevention connection box - Google Patents
A kind of stainless-steel pipe cable lightning prevention connection box Download PDFInfo
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- CN209358194U CN209358194U CN201821793642.1U CN201821793642U CN209358194U CN 209358194 U CN209358194 U CN 209358194U CN 201821793642 U CN201821793642 U CN 201821793642U CN 209358194 U CN209358194 U CN 209358194U
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Abstract
The utility model relates to a kind of stainless-steel pipe cable lightning prevention connection box, including metallic wiring box shell, stainless-steel pipe cable, two-core cable, isolation terminal will be divided into left chamber in terminal block housings, right chamber, one end of stainless-steel pipe cable is protruded into the left chamber of terminal block housings, one end of two-core cable is protruded into the right chamber of terminal block housings, TVS lightning protection component is equipped in right chamber, two terminals are drawn respectively in the both ends of TVS lightning protection component, the cable core of stainless-steel pipe cable is electrically connected by isolation terminal with the formation of a terminals of TVS lightning protection component one end, another terminals of TVS lightning protection component one end are electrically connected with terminal block housings formation, two cable cores of two-core cable are electrically connected with the formation of two terminals of the TVS lightning protection component other end respectively, the crust and terminal box of stainless-steel pipe cable Shell forms electrical connection.By increasing lightning protection component in terminal block housings, and signal circuit is realized in the lightning protection of well head, reduce the risk that lightning stroke causes underground equipment impaired.
Description
Technical field
The utility model relates to a kind of stainless-steel pipe cable lightning prevention connection box.
Background technique
Stainless-steel pipe cable has extraordinary impact resistance, anticorrosive, sealing performance, is highly suitable in high temperature and pressure
In high corrosion oil gas well shaft, realize that pressure bomb (or other logging equipments) and ground show that the signal between equipment passes
It is defeated.Stainless-steel pipe cable has arrived after ground passes through wellhead sealing device, and it is deep as the following adjustment underground equipment to reserve a segment length
Degree is used, and is then accessed ground connection box, is converted to two-core cable, to access the pressure gauge ground being installed in field control cabinet
Display instrument realizes that the signal between underground and ground installation transmits.And currently used terminal box majority does not have lightning protection structure, from
And equipment generates some potential safety problems when in use.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of, and the stainless-steel pipe cable with lightning protection function is anti-
Thunder terminal box.
The technical scheme for implementing the utility model is as follows
A kind of stainless-steel pipe cable lightning prevention connection box, including metallic wiring box shell, stainless-steel pipe cable, twin-core electricity
Cable, is provided with isolation terminal in terminal block housings, the isolation terminal will separate in terminal block housings be independent left chamber,
One end of right chamber, stainless-steel pipe cable is protruded into the left chamber of terminal block housings, and terminal box is protruded into one end of two-core cable
TVS lightning protection component is provided in the right chamber of shell, in right chamber, two terminals are drawn at the both ends of TVS lightning protection component respectively,
The cable core of the stainless-steel pipe cable is electrically connected by isolation terminal with the formation of a terminals of TVS lightning protection component one end,
The formation of another terminals of TVS lightning protection component one end and terminal block housings is electrically connected, two cable cores of two-core cable respectively with TVS
Two terminals of the lightning protection component other end form electrical connection, and the crust of the stainless-steel pipe cable is formed with terminal block housings
Electrical connection.
Further, the left end of the terminal block housings is provided with the first left end cap, the second left end cap, the second left end cap with
The connection of terminal block housings left end, the first left end cap are connect with the second left end cap, and stainless-steel pipe cable sequentially passes through the first left end
Lid, the second left end cap protrude into left chamber,
Further, between the first left end cap and the crust of stainless-steel pipe cable, the second left end cap and stainless-steel pipe
Sealing element is respectively adopted between the insulating sheath outer wall of cable to be sealed.
Further, the stainless-steel pipe cable is clamped by metallic cable is sandwiched on the first left end cap.
Further, the left chamber by the second left end cap formed sealed chamber, offered in terminal block housings with
The pressure tap and one pressure gauge of assembly of sealed chamber connection are monitored the indoor pressure of seal chamber by pressure tap.
Further, the right end of the terminal block housings is connected with the right end cap that capping is formed to right chamber, two-core cable
It protrudes into right chamber across right end cap, is sealed between right end cap and two-core cable using sealing structure.
Using above-mentioned technical proposal, by increasing lightning protection component in terminal block housings, and realizes signal circuit and exist
The lightning protection of well head reduces the risk that lightning stroke causes underground equipment impaired, in addition, the exterior design of terminal box shell has a ground connection
Surge current is introduced earthed system for being connected with the lightning protection earthing system at scene by column.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In attached drawing, 1 is terminal block housings, and 2 be stainless-steel pipe cable, and 3 be two-core cable, and 4 be isolation terminal, and 5 be a left side
Chamber, 6 be right chamber, and 7 be TVS lightning protection component, and 8 be sealing element, and 9 be right end cap, and 10 be sealing structure, and 11 be metallic cable
Folder, 12 be pressure tap, and 13 be pressure gauge, and 14 be the first left end cap, and 15 be the second left end cap, and 16 be copper core, and 17 be insulating sheath.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, those of ordinary skill in the art's every other embodiment obtained under the premise of being not necessarily to creative work, all belongs to
In the range of the utility model protection.
As shown in Figure 1, a kind of stainless-steel pipe cable lightning prevention connection box, including metallic wiring box shell 1, stainless-steel pipe
Cable 2, two-core cable 3 are provided with seal isolation terminal 4, the periphery wall and junction box body of isolation terminal in terminal block housings
It forms contact between inner wall to seal, in specific implementation, terminal block housings can be threadedly coupled encryption seal structures using two shells
At isolation terminal will separate in terminal block housings is independent left chamber 5, right chamber 6, and one end of stainless-steel pipe cable is protruded into
In the left chamber of terminal block housings, one end of two-core cable is protruded into the right chamber of terminal block housings, and TVS is provided in right chamber
Two terminals are drawn at lightning protection component 7, the both ends of TVS lightning protection component respectively, and the cable core of stainless-steel pipe cable passes through isolation end
Son is electrically connected with the formation of a terminals of TVS lightning protection component one end, another terminals and terminal box of TVS lightning protection component one end
Shell forms electrical connection, and two cable cores of two-core cable are electrically connected with the formation of two terminals of the TVS lightning protection component other end respectively
It connects, the crust of stainless-steel pipe cable is electrically connected with terminal block housings formation.In specific implementation, steel pipe type cable inner copper core 16 is logical
It crosses seal isolation terminal to be electrically connected with realization on the right side of terminal box, simultaneously because terminal box shell and steel pipe type cable crust are realized electrically
Connection, therefore a copper needle is also designed inside terminal box shell mechanism part, 2 copper needles on the right side of terminal block housings can draw
2 electric wires are connect with 2 terminals of the lightning protection component in terminal box out, and the other side of lightning protection component is connected to 2 core rubber cables, real
Now with the connection of ground display instrument, and signal circuit is realized in the lightning protection of well head, reducing lightning stroke causes underground equipment impaired
Risk.The exterior design of terminal box shell has an earthing rod, for being connected with the lightning protection earthing system at scene, by surge electricity
Stream introduces earthed system.
The left end of terminal block housings is provided with the first left end cap 14 of metal, the second left end cap 15, the second left end cap with connect
Wire box shell left end is threadedly coupled, and the first left end cap is threadedly coupled with the second left end cap, and stainless-steel pipe cable sequentially passes through the
One left end cap, the second left end cap protrude into left chamber；Between first left end cap and the crust of stainless-steel pipe cable, the second left end
Sealing element 8 is respectively adopted between lid and the insulating sheath outer wall of stainless-steel pipe cable to be sealed.The right end of terminal block housings
It is connected with the right end cap 9 that capping is formed to right chamber, two-core cable passes through right end cap and protrudes into right chamber, right end cap and twin-core electricity
It is sealed between cable using sealing structure 10, since terminal box is generally positioned at field, is also required to consider on the right side of terminal box
Rain-proof waterproof, therefore pass through the design of sealing structure (gum filler sealing), it realizes the sealing to 2 core rubber cable crusts, prevents
Only rainwater enters the right side of the space of terminal box by cable sheath.Between first left end cap and the crust of stainless-steel pipe cable
Sealing element realizes the sealing of stainless-steel pipe cable sheath in such a way that metal ferrule seals or gum filler seals.Second
Sealing element between left end cap and 17 outer wall of insulating sheath of stainless-steel pipe cable is realized by the way of gum filler sealing
Sealing to the cable core of having insulation sheath inside stainless-steel pipe cable.When stainless-steel pipe cable in underground due to certain well
Condition or operating condition are impaired, cause steel pipe type cable crust to have breakage, the gas or liquid if well cylinder pressure is higher, in pit shaft
Body may enter steel pipe type cable from damaged mouth, reach ground between cable core insulating sheath along on the inside of steel pipe type cable crust, lead to
2 grades of above-mentioned sealings are crossed, can prevent gas or liquid leakage in steel pipe from coming out, eliminate safe hidden trouble.
Stainless-steel pipe cable presss from both sides 11 (metal clips) by metallic cable and is clamped on the first left end cap, in steel pipe type cable
When into terminal box, is on the one hand pressed from both sides by steel cable and steel pipe type cable is fixedly clamped, when steel pipe type cable tension, stress point is in steel
At folder, avoids under tension at the sealing of back and act on and sealing is destroyed.
Left chamber forms sealed chamber by the second left end cap, offers in terminal block housings and is connected to sealed chamber
Pressure tap 12 and assemble a pressure gauge 13 the indoor pressure of seal chamber is monitored by pressure tap.When steel pipe type cable is in underground
It is impaired than more serious, cause inside cable core insulation sheath to be also damaged, the gas or liquid in pit shaft are possibly into cable core
It, on a small quantity may be along ground be reached inside cable core insulating sheath, if do not sealed off inside insulating sheath, it is also possible to
Cause to leak and cause security risk.Therefore third level sealing is devised, that is, passes through seal isolation terminal, terminal block housings and the
A gas-tight silo is formed between two left end caps, to solve the problems, such as above-mentioned.Further, it by pressure gauge, can supervise in real time
Controlling the breakage of above-mentioned steel pipe type cable underground causes down-hole liquid or gas to leak into the failure in gas-tight silo, first occurring leaking
Phase with regard to timely early warning, is replaced to carry out the maintenance of steel pipe type cable.
Claims (5)
1. a kind of stainless-steel pipe cable lightning prevention connection box, including metallic wiring box shell, stainless-steel pipe cable, twin-core electricity
Cable, which is characterized in that isolation terminal is provided in terminal block housings, the isolation terminal will be divided into solely in terminal block housings
Vertical left chamber, right chamber, one end of stainless-steel pipe cable are protruded into the left chamber of terminal block housings, one end of two-core cable
It protrudes into the right chamber of terminal block housings, TVS lightning protection component is provided in right chamber, the both ends of TVS lightning protection component are drawn respectively
Two terminals, the cable core of the stainless-steel pipe cable pass through a terminals of isolation terminal and TVS lightning protection component one end
Electrical connection is formed, another terminals of TVS lightning protection component one end are electrically connected with terminal block housings formation, two cables of two-core cable
Core respectively with two terminals of the TVS lightning protection component other end formation be electrically connected, the crust of the stainless-steel pipe cable with connect
Wire box shell forms electrical connection.
2. a kind of stainless-steel pipe cable lightning prevention connection box as described in claim 1, which is characterized in that the terminal block housings
Left end be provided with the first left end cap, the second left end cap, the second left end cap is connect with terminal block housings left end, the first left end cap with
The connection of second left end cap, stainless-steel pipe cable sequentially passes through the first left end cap, the second left end cap protrudes into left chamber,
Between first left end cap and the crust of stainless-steel pipe cable, the insulating sheath of the second left end cap and stainless-steel pipe cable
Sealing element is respectively adopted between outer wall to be sealed.
3. a kind of stainless-steel pipe cable lightning prevention connection box as claimed in claim 2, which is characterized in that the stainless-steel pipe
Cable is clamped by metallic cable to be sandwiched on the first left end cap.
4. a kind of stainless-steel pipe cable lightning prevention connection box as described in claims 1 or 2 or 3, which is characterized in that the left chamber
Room forms sealed chamber by the second left end cap, and the pressure tap being connected to sealed chamber and assembly are offered in terminal block housings
One pressure gauge is monitored the indoor pressure of seal chamber by pressure tap.
5. a kind of stainless-steel pipe cable lightning prevention connection box as described in claims 1 or 2 or 3, which is characterized in that the wiring
The right end of box shell is connected with the right end cap that capping is formed to right chamber, and two-core cable passes through right end cap and protrudes into right chamber, right
It is sealed between end cap and two-core cable using sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793642.1U CN209358194U (en) | 2018-11-01 | 2018-11-01 | A kind of stainless-steel pipe cable lightning prevention connection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793642.1U CN209358194U (en) | 2018-11-01 | 2018-11-01 | A kind of stainless-steel pipe cable lightning prevention connection box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358194U true CN209358194U (en) | 2019-09-06 |
Family
ID=67781565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821793642.1U Active CN209358194U (en) | 2018-11-01 | 2018-11-01 | A kind of stainless-steel pipe cable lightning prevention connection box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358194U (en) |
-
2018
- 2018-11-01 CN CN201821793642.1U patent/CN209358194U/en active Active
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