CN209293787U - A kind of underground electrical equipment connection sealing structure and pressure measuring unit - Google Patents
A kind of underground electrical equipment connection sealing structure and pressure measuring unit Download PDFInfo
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- CN209293787U CN209293787U CN201821896287.0U CN201821896287U CN209293787U CN 209293787 U CN209293787 U CN 209293787U CN 201821896287 U CN201821896287 U CN 201821896287U CN 209293787 U CN209293787 U CN 209293787U
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Abstract
This application involves oil field well equipment technical fields, and in particular to a kind of underground electrical equipment connection sealing structure and pressure measuring unit.Sealing structure includes sealing drum, electrode, insulating layer and V-type composite rim, there is cavity inside sealing drum, sealing drum top surface has the external through-hole between cavity of connection, electrode passes through in through-hole insertion cavity, insulating layer is enclosed in the outside of electrode, V-type composite rim is cased with outside insulating layer, stud screws in from through-hole upper end and withstands V-type composite rim, make V-type composite rim be squeezed strut after it is external resist through-hole wall, inside resists insulating layer.The application also provides a kind of pressure measuring unit comprising above-mentioned sealing structure.The sealing structure can realize the multi-stage sealed of each easy to leak point, to effectively guarantee that sealing structure is not susceptible to leak in the high temperature and high pressure environment of underground, increases the service life of sealing structure, guarantee the normal work of internal electric equipment.Pressure measuring unit equally improves sealing performance, the pressure sensor inside effective protection.
Description
Technical field
The utility model relates to oil field well equipment technical fields, and in particular to a kind of underground electrical equipment connection sealing knot
Structure and pressure measuring unit.
Background technique
In industrial oil producing operation, need to be packed into various electrical equipments in underground, the monitoring for downhole parameters.However, well
Lower environment is generally high temperature and pressure and has strong corrosive, has very big harm and influence to electrical equipment, therefore, it is necessary to make
Electrical equipment is placed with sealing structure.But since most of electrical equipments need to connect other than electric wire to sealing structure, because
This, it is impossible to common seal approach is used, it is in the prior art, general using the through-hole that connector air plug is placed in sealed cylinder
In, by connector one end connecting circuit equipment, the other end connects electric wire to realize electric current and signal transmission and sealing function.
But existing connector, the monopole sealing for being inserted in rubber ring is generallyd use, sealing drum is inserted in by air plug mode
In through-hole, under the effect of long term high temperature high pressure, endurance of the O-ring that air plug uses when there is abnormal high pressure is limited,
Overstepping the extreme limit damaged will be broken, to cause to leak, influence the normal work of internal electric equipment.
Utility model content
Technical problem to be solved in the utility model are as follows: a kind of underground electrical equipment connection sealing structure is provided, it can
It solves to realize that O-ring breakage caused by sealing is broken using connector air plug mode in the prior art, sealability decline occurs
The problem of leakage, to guarantee the normal work of internal electric equipment.The utility model also provides a kind of comprising above-mentioned sealing knot
The pressure measuring unit of structure carries out pressure measurement by being put into pressure sensor in sealing drum, while guaranteeing the close of pressure sensor
Feng Xing is not influenced by outboard leak well liquid.
Used technical solution is to solve above-mentioned technical problem:
A kind of underground electrical equipment connection sealing structure, including sealing drum, electrode, insulating layer and V-type composite rim, it is described close
There is the cavity that can accommodate underground electrical equipment, and sealing drum top surface has the external through-hole between cavity of connection inside sealed tube,
The electrode passes through in through-hole insertion cavity, is enclosed with insulating layer in the outside of the electrode, is cased with V-type outside the insulating layer
Composite rim, stud screw in from through-hole upper end and withstand V-type composite rim, make V-type composite rim be squeezed strut after external resist through-hole
Inner wall, inside resist insulating layer.
In a preferred embodiment, the electrode includes the first electrode being successively threadedly coupled from top to bottom,
Two electrodes and third electrode, and first electrode is identical with the diameter of third electrode, second electrode diameter are greater than first electrode and the
The diameter of three electrodes.
In a preferred embodiment, the insulating layer includes the first insulation tube, the second insulation tube, the first support base
With the second support base, first insulation tube is wrapped in outside first electrode, and V-type combination is enclosed with outside the first insulation tube
Circle is cased with the first support base outside the first electrode of V-type composite rim lower part, and the second electricity is withstood in first support base bottom surface
The top surface of pole is enclosed with the second insulation tube in third electrode exterior, covers in the space between the second insulation tube and the first support base
There is the second support base.
In a preferred embodiment, there is the first gasket, in the second insulation tube between the V-type composite rim and stud
It is cased with the second gasket outside and below the second support base.
In a preferred embodiment, it being fixed with pressing plate in the sealing drum top surface, the stud may pass through pressing plate,
The pressing plate is anchored on sealing drum top surface by screw.
In a preferred embodiment, live wire is connected at the top of the electrode, insulating tape is wound in electric wire
The connection of electric wire and electrode is realized with electrode exterior.
In a preferred embodiment, the material of the insulating layer is modified polyether ether ketone, the modified polyether ether
Ketone is obtained by the way that the glass-fibre that its mass percent is 5%-50% is added in polyether-ether-ketone.
A kind of pressure measuring unit includes sealing structure described in any of the above embodiments, further includes pressure sensor and rubber pad, institute
It states pressure sensor to be installed in the cavity of sealing drum, and is bonded with the side wall of sealing drum, the rubber pad is fixed on pressure biography
It on cavity inner wall below sensor, and is connected to below rubber pad with well liquid, top surface is to pressure sensor and cavity on the cavity
The first cavity, the sensor are not the second cavity, the pressure with cavity contact surface to the space of rubber pad in the space of contact surface
The induction end of force snesor is located in the second cavity, is each filled with insulating liquid in first cavity and the second cavity.
In a preferred embodiment, steel elastic slice is molded in the rubber pad.
In a preferred embodiment, portion is equipped with ring flange on such devices, close below the rubber pad
There is internal screw thread in sealed tube.
The beneficial effects of the utility model are: by wrapping up insulating layer in electrode exterior, and V-type is cased with outside insulating layer
Composite rim, outer lip and epipharynx strut after being pressurized by V-type composite rim, and outer lip can withstand the through-hole wall of sealing drum, and epipharynx can push up
Firmly insulating layer outer wall, to guarantee effectively to seal between V-type composite rim and through-hole wall and V-type composite rim and insulating layer outer wall
Performance, meanwhile, insulating layer by V-type composite rim epipharynx after being squeezed, and inside can be withstood on the outside of electrode, to ensure that insulation
Layer and interelectrode sealing performance.The sealing structure can realize the multi-stage sealed of each easy to leak point, to effectively guarantee sealing
Structure is not susceptible to leak in the high temperature and high pressure environment of underground, increases the service life of sealing structure, guarantees internal electric equipment
Normal work.
The utility model additionally provides the pressure measuring unit comprising above-mentioned sealing structure, and pressure sensor is installed on sealing drum
It is interior, under the premise of realizing the function of pressure measurement, it ensure that the sealing performance of inside cavity, protect pressure sensor not by well liquid
Damage.
Detailed description of the invention
Fig. 1 is the explosive view of sealing structure described in the utility model；
Fig. 2 is the sectional view of sealing structure described in the utility model；
Fig. 3 is partial enlarged view of the sealing structure described in the utility model at V-type composite rim；
Fig. 4 is partial enlarged view of the sealing structure described in the utility model at second electrode；
Fig. 5 is the explosive view of pressure measuring unit described in the utility model；
Fig. 6 is the main view of pressure measuring unit described in the utility model；
Fig. 7 is sectional view of the Fig. 6 along the direction A-A；
Fig. 8 is partial cutaway view of the pressure measuring unit described in the utility model at pressure sensor；
Fig. 9 is partial cutaway view of the pressure measuring unit described in the utility model at rubber pad.
Each appended drawing reference in figure are as follows: 1: sealing structure, 11: sealing drum, 1101: the first shells, 1102: second housing,
1103: third shell, 1121: the first gas bleeder valves, 1131: the second gas bleeder valves, 1122: the first liquid-filling valves, 1132: the second fluid injections
Valve, 111: cavity, 1111: the first cavitys, 1112: the second cavitys, 12: electrode, 121: first electrode, 122: second electrode,
123: third electrode, 131: the first insulation tubes, 132: the second insulation tubes, 141: the first support bases, 142: the second support bases, 151:
First gasket, 152: the second gaskets, 16:V type composite rim, 17: stud, 181: pressing plate, 182: screw, 191: electric wire, 192: absolutely
Edge adhesive tape, 21: first circuit board, 22: second circuit board, 23: fixing screws, 3: pressure sensor, 31: induction end, 4: rubber
Pad, 41: steel elastic slice, 5: rubber mat pressing plate.
Specific embodiment
Below with reference to each attached drawing, the utility model is described in detail.
It include sealing drum 11, electrode 12, insulating layer and V-type group in conjunction with figure and Fig. 2, sealing structure described in the utility model
Close circle 16, it is preferred that the electrode 12 in the present embodiment includes first electrode 121, the second electrode successively installed from top to bottom
122 and third electrode 123；The insulating layer includes the first insulation tube 131, the second insulation tube 132 and the first support base 141
With the second support base 142.Wherein, sealing drum 11 is the cabinet that top surface has larger thickness, and lower part is electric with that can accommodate installation
The cavity 111 of gas equipment, the cavity 111 realize that top surface is connected to outside by through-hole, have single order cascaded surface in through-holes.
As shown in figure 4, first electrode 121 is identical with the diameter of third electrode 123, the diameter of second electrode 122 is greater than first electrode 121
With third electrode 123, and the upper and lower ends of second electrode 122 have internal screw thread, it is corresponding, first electrode 121 and third electricity
Pole 123 has external screw thread, to keep first electrode 121 and second electrode 122 and second electrode 122 and third electrode 123 real
Now it is threadedly coupled.It is enclosed with the first insulation tube 131 outside first electrode 121, and connects live wire on 121 top of first electrode
191, the electric wire 191 and first electrode 121 are weldingly connected, and fixed by winding insulating tape 192.It is below in cascaded surface
The second insulation tube 132 is enclosed with outside third electrode 123.Between the first insulation tube 131 and the second insulation tube 132 from top to bottom according to
Secondary setting the first gasket 151, V-type composite rim 16, the first support base 141, the second support base 142 and the second gasket 152, by with
The setting of upper structure eliminates the gap between electrode 1 and through-hole.Meanwhile as shown in figure 3, by being revolved at the top of the first gasket 151
Enter stud 17, stud 17 withstands the first gasket 151 to act on V-type composite rim 16, since V-type composite rim 16 is by vertical
Radial deformation occurs after the power in direction and opens, epipharynx withstands the first insulation tube 131, and outer lip withstands through-hole wall, when V-type group
When conjunction 16 epipharynxs of circle withstand the first insulation tube 131, since there is also elastic deformations for the first insulation tube 131, and the first electricity can be withstood
121 outer wall of pole, therefore, using V-type composite rim 16, it can be achieved that between V-type composite rim 16 and through-hole wall, V-type composite rim 16 and
Sealing between one insulation tube, 131 outer wall, between 121 outer wall of 131 inner wall of the first insulation tube and first electrode, fully ensures that the close of device
Feng Xing.Pressing plate 181 is fixed on 11 top surface of sealing drum by screw 182, to realize the stabilization of internal each structure, external beauty
See and further increase resistant to high temperatures and corrosion resistance.The above structure, using V-shaped seal ring and insulating tape 192, it can be achieved that
A variety of seal approach are used in combination, and improve the sealing performance of device；With the existing mode using connector air plug, have at
This is low, and the better advantage of sealing effect, and can bear bigger electrical pressure resistance and electric current.
Preferably, the insulating layer includes the first insulation tube 131, the second insulation tube 132, the first support base 141 and the
Two support bases 142 use modified polyether ether ketone material, and the modified polyether ether ketone is by being added it in polyether-ether-ketone
Mass percent is that the glass-fibre of 5%-50% obtains, and more preferably, the ratio that glass is added is 30%.Use modified polyether ether
The purpose of ketone is: existing sealed insulating material, generally uses tetrafluoroethene, has " cold flow properties ", i.e., material product exists
The lower moulding variation occurred of long-time continuous load effect, so as to cause in specific compression stress, tetrafluoroethene can be generated
" cold flow " and deformation, seriously affect the sealing effect of device.Use the modified polyether ether ketone as after insulating layer, is resistant to 120
DEG C high temperature, bear the high pressure of 40MPa, and there is corrosion resistant effect, have for underground high temperature and pressure and severe corrosive environment
There is stronger adaptability.
In conjunction with figure 5-8, a kind of pressure measuring unit comprising above-mentioned sealing structure 1, further includes having pressure sensor 3 and rubber
Rubber mat 4, the pressure sensor 3 are installed in the cavity 111 of sealing drum 11, in pressure sensor 3 and 11 lower part of sealing drum
Rubber pad 4 is installed in cavity 111.Further, the sealing drum 11 include successively be threadedly coupled the first shell 1101,
Second housing 1102 and third shell 1103, wherein there is through-hole on the first shell 1101, and be connected with electrode 12, insulating layer
With the sealing structures 1 such as V-type composite rim 16.Pressure sensor 3 is installed in third shell 1103, in the sense of pressure sensor 3
It should hold and rubber pad 4 is installed in a distance of 31 lower sections.Also, cavity 111 can be divided for the first cavity 1111 and the second chamber
Body 1112, the first cavity 1111 from the top surface of cavity 111 to pressure sensor 3 with the contact surface of 111 inner wall of cavity；Second cavity
1112 from the induction end 31 of pressure sensor 3 to rubber pad 4, and first cavity 1111 and the second cavity 1112 are mutually indepedent
And it is closed.Meanwhile to guarantee that insulating liquid can be injected in the first cavity 1111 and the second cavity 1112, in sealing drum 111
On offer connection the first cavity 1111 the first gas bleeder valve 1121 and the first liquid-filling valve 1122, and connection the second cavity 1112
The second gas bleeder valve 1131 and the second liquid-filling valve 1132, and the first gas bleeder valve 1121 is made to be located at the top of the first liquid-filling valve 1122,
Second gas bleeder valve 1131 is located at the top of the second liquid-filling valve 1132.Insulating liquid preferably uses transformer oil, by transformer oil
It injects in the first liquid-filling valve 1122 (the second liquid-filling valve 1132), liquid level rising makes 111 inner air of cavity from the first gas bleeder valve
Discharge in 1121 (the second gas bleeder valves 1131), until transformer oil is full of the first cavity 1111 and the second cavity 1112.First
In cavity 1111, first circuit board 21 and second circuit board 22,21 He of first circuit board are installed by fixing screws 23
Second circuit board 22 is all connected with pressure sensor 3, to play the role of processing pressure data.Third below rubber pad 4
On shell 1103, there is internal screw thread (not shown), for connecting centralizer, to guarantee that equipment can be along casing axis tripping in
In well.
As shown in figure 9, the rubber pad 4 is fixed on 111 inner wall of cavity by rubber mat pressing plate 5, it is preferred that in rubber pad
Inside 4, steel elastic slice 41 is equipped with by Shooting Technique, and 41 material of steel elastic slice is stainless steel, titanium alloy, magnalium conjunction
At least one of gold.The reason of being molded steel elastic slice 41 is: since rubber pad 4 is in internal insulating liquid and external well liquid
Under differential pressure action, frequent deformation is to guarantee that external and internal pressure is identical, and thus, in the long-term use, rubber is easy to appear always
The problem of change, has seriously affected the sealing of rubber pad 4 by the structure problem that aging can generate strength reduction, rupture, edge fall off
Property and pilot ability.Steel elastic slice 41 is molded in rubber pad 4, before the elasticity and pilot ability for guaranteeing rubber pad 4 itself
It puts, while also improving the structural strength of rubber pad 4, applied to the environmental effect highly significant of underground high temperature and pressure, can have
Effect solves the above problems, and makes that rubber pad semi-finals degree is high, be not easily broken, edge is not easy to loosen, to improve 4 service life of rubber pad.
Hereinafter, illustrating the concrete operating principle of the pressure measuring unit.Electric wire 191 is connected into external equipment by conducting wire, the
Three electrodes 123 connect circuit board by conducting wire, connect pressure sensor 3 using circuit board, for its power supply while realizing that signal passes
It is defeated, to be connected to the circuit of pressure measurement.Transformer oil in first cavity 1111, can be in conducting wire therein, the first circuit
Plate 21, second circuit board 22 and pressure sensor 3 play heat spreading function；Transformer oil in second cavity 1112, passes through rubber
The pilot of pad 4 acts on, and realizes and balances with the pressure of external well liquid.Since induction end 31 contacts the transformation in the second cavity 1112
Device oil, therefore, can be by measuring its pressure to characterize the pressure of external well liquid.Pressure measuring unit described in the utility model, in well
, it can be achieved that fabulous leakproofness, relative to the sealing of air plug mode, performance is excellent in lower high temperature and pressure and the strong environment of corrosivity
Gesture is obvious.
The above is only the preferred embodiment of the present invention, not thereby limits the patent protection of the utility model
Range, it is all with equivalent structure transformation made by the utility model specification and accompanying drawing content, directly or indirectly it is used in it
His relevant technical field similarly includes within the protection scope of the present utility model.
Claims (10)
1. a kind of underground electrical equipment connects sealing structure, which is characterized in that combined including sealing drum, electrode, insulating layer and V-type
Circle, the sealing drum inside has the cavity that can accommodate underground electrical equipment, and sealing drum top surface has connection external and cavity
Between through-hole, the electrode passes through in through-hole insertion cavity, insulating layer is enclosed in the outside of the electrode, outside the insulating layer
Portion is cased with V-type composite rim, and stud screws in from through-hole upper end and withstand V-type composite rim, so that V-type composite rim is squeezed and struts rear outside
Resist through-hole wall, inside resists insulating layer.
2. a kind of underground electrical equipment as described in claim 1 connects sealing structure, which is characterized in that the electrode includes certainly
First electrode, second electrode and the third electrode being successively threadedly coupled under above, and the diameter phase of first electrode and third electrode
Together, second electrode diameter is greater than the diameter of first electrode and third electrode.
3. a kind of underground electrical equipment as claimed in claim 2 connects sealing structure, which is characterized in that the insulating layer includes
First insulation tube, the second insulation tube, the first support base and the second support base, first insulation tube are wrapped in outside first electrode
Portion is enclosed with V-type composite rim outside the first insulation tube, and the first support is cased with outside the first electrode of V-type composite rim lower part
Seat, and the top surface of second electrode is withstood in first support base bottom surface, is enclosed with the second insulation tube in third electrode exterior, the
The second support base is cased in space between two insulation tubes and the first support base.
4. a kind of underground electrical equipment as claimed in claim 3 connects sealing structure, which is characterized in that the V-type composite rim
There is the first gasket between stud, be cased with the second gasket outside the second insulation tube and below the second support base.
5. a kind of underground electrical equipment as described in claim 1 connects sealing structure, which is characterized in that on the sealing drum top
Face is fixed with pressing plate, and the stud may pass through pressing plate, and the pressing plate is anchored on sealing drum top surface by screw.
6. a kind of underground electrical equipment as described in claim 1 connects sealing structure, which is characterized in that on the top of the electrode
Portion connects live wire, and insulating tape is wound in electric wire and electrode exterior to realize the connection of electric wire and electrode.
7. a kind of underground electrical equipment as described in claim 1 connects sealing structure, which is characterized in that the material of the insulating layer
Material is modified polyether ether ketone, and the modified polyether ether ketone is 5%-50%'s by the way that its mass percent is added in polyether-ether-ketone
Glass-fibre obtains.
8. a kind of pressure measuring unit, which is characterized in that include the described in any item sealing structures of claim 1-7, further include pressure
Sensor and rubber pad, the pressure sensor are installed in the cavity of sealing drum, and are bonded with the end face of sealing drum, the rubber
Elastic mounting is connected to below rubber pad with well liquid on the cavity inner wall below the pressure sensor, and top surface is arrived on the cavity
The space of pressure sensor and cavity contact surface is the first cavity, and the space of the sensor and cavity contact surface to rubber pad is
The induction end of second cavity, the pressure sensor is located in the second cavity, fills in first cavity and the second cavity
Full insulating liquid.
9. a kind of pressure measuring unit as claimed in claim 8, which is characterized in that be molded with steel elastic slice in the rubber pad.
10. a kind of pressure measuring unit as claimed in claim 8, which is characterized in that portion is equipped with ring flange on such devices, institute
Stating has internal screw thread on the sealing drum below rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896287.0U CN209293787U (en) | 2018-11-16 | 2018-11-16 | A kind of underground electrical equipment connection sealing structure and pressure measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896287.0U CN209293787U (en) | 2018-11-16 | 2018-11-16 | A kind of underground electrical equipment connection sealing structure and pressure measuring unit |
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| Publication Number | Publication Date |
|---|---|
| CN209293787U true CN209293787U (en) | 2019-08-23 |
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ID=67643742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821896287.0U Active CN209293787U (en) | 2018-11-16 | 2018-11-16 | A kind of underground electrical equipment connection sealing structure and pressure measuring unit |
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| Country | Link |
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| CN (1) | CN209293787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281656A (en) * | 2018-11-19 | 2019-01-29 | 杭州乾景科技有限公司 | A kind of underground electrical equipment connection sealing structure and pressure measuring unit |
| CN112893665A (en) * | 2021-01-25 | 2021-06-04 | 南昌航空大学 | Electric pulse assisted pipe necking thickening forming device and method |
-
2018
- 2018-11-16 CN CN201821896287.0U patent/CN209293787U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281656A (en) * | 2018-11-19 | 2019-01-29 | 杭州乾景科技有限公司 | A kind of underground electrical equipment connection sealing structure and pressure measuring unit |
| CN112893665A (en) * | 2021-01-25 | 2021-06-04 | 南昌航空大学 | Electric pulse assisted pipe necking thickening forming device and method |
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