CN205938255U - Take threaded connection structure of coating steel pipe with anti - corrosion feature - Google Patents

Take threaded connection structure of coating steel pipe with anti - corrosion feature Download PDF

Info

Publication number
CN205938255U
CN205938255U CN201620887549.1U CN201620887549U CN205938255U CN 205938255 U CN205938255 U CN 205938255U CN 201620887549 U CN201620887549 U CN 201620887549U CN 205938255 U CN205938255 U CN 205938255U
Authority
CN
China
Prior art keywords
steel pipe
sealing shroud
connection structure
screw connection
proof function
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.)
Active
Application number
CN201620887549.1U
Other languages
Chinese (zh)
Inventor
陆金福
殷康
Original Assignee
陆金福
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 陆金福 filed Critical 陆金福
Priority to CN201620887549.1U priority Critical patent/CN205938255U/en
Application granted granted Critical
Publication of CN205938255U publication Critical patent/CN205938255U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a take threaded connection structure of coating steel pipe with anti - corrosion feature, including steel pipe and coupling, steel tube end processing has male thread, coupling both ends processing have with the male thread matched with box thread, its characterized in that: the axial middle part of coupling inner wall is equipped with the seal cover, the length of seal cover to make with the coupling joint after the steel pipe have at least some enter into in the seal cover and with the cooperation of seal cover sealing contact, and the steel pipe all is equipped with anticorrosion coating with the internal and external surface and the terminal surface of seal cover sealing contact mating part. The utility model discloses a threaded connection simple structure is reliable, and the leakproofness is good, can improve the non -corrosibility ability of oil well pipe and coupling greatly, prolongs the life of oil well pipe and coupling.

Description

There is the screw connection structure of the band coating steel pipe of corrosion proof function
Technical field
This utility model is related to oil pipe, sleeve pipe or the line pipe of oil field use, and specifically one kind has anticorrosion work( The screw connection structure of the band coating steel pipe of energy.
Background technology
In oil and gas development, oil well pipe bears multiple load and the synergy of different corrosive medium at work, some In oil well, well liquid contains saline, carbon dioxide, hydrogen sulfide or corrosion-causing bacteria, the depositing of these corrosive mediums or corrosion-causing bacteria Greatly reducing the service life of oil well pipe, especially oil well pipe is always domestic with the etching problem of oil well pipe junction A difficult problem present in each elephant well construction.Existing oil well pipe and its box cupling generally pass through in inwall and connecting portion setting Erosion shield, makes with antiseptic property, can sustain the corrosion of corrosive medium or corrosion-causing bacteria in oil well, but due to Oil well pipe needs dismounting assembling in actual use, and in dismounting assembling process, erosion shield is inevitably worn. And because the diameter dimension of different oil well pipes has fine difference unavoidably, different oil well pipes so can be led to enter box cupling Depth is different, repeatedly after dismounting assembling, oil well pipe and box cupling necessarily has erosion shield be worn away position and is directly exposed to corruption So that the antiseptic property of oil well pipe and its box cupling substantially reduces under erosion medium, the service life of oil well pipe and its box cupling is also big Big shortening.
Content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides and a kind of has corrosion proof function The screw connection structure of band coating steel pipe, this screw connection structure is simple and reliable, good airproof performance, be greatly improved oil well pipe and its The antiseptic property of box cupling, extends the service life of oil well pipe and its box cupling.
The technical scheme providing according to this utility model:There is the threaded knot of the band coating steel pipe of corrosion proof function Structure, including steel pipe and box cupling, described steel tube end part is machined with male thread, and described box cupling two ends are machined with and are matched with described male thread The box thread closing;It is characterized in that:Be provided with sealing shroud in the middle part of the axial direction of described box cupling inwall, the length of described sealing shroud to make with Steel pipe after box cupling joint is at least part of to be entered in sealing shroud and the cooperation in sealing contact with sealing shroud, and described steel pipe It is equipped with erosion shield with the surfaces externally and internally of sealing shroud mating part in sealing contact and end face.
As further improvement of the utility model, in the middle part of the axial direction of described box cupling inwall, it is provided with annular groove, described Sealing shroud is installed in described annular groove.
As further improvement of the utility model, in the middle part of the axial direction of described sealing shroud inwall, it is provided with cannelure.
As further improvement of the utility model, the periphery wall that described steel pipe enters into sealing shroud interior part is smooth table The geometry in face, the position that described sealing shroud two ends are engaged with steel pipe sealing is also set to the geometry of smooth surface.
As further improvement of the utility model, between leaving between the end face of two being combined with described box cupling piece steel pipe Gap, the periphery wall that described steel pipe enters into sealing shroud interior part has male thread, and described sealing shroud two ends are contacted with steel pipe sealing The position of cooperation also is provided with the box thread matching with described male thread.
As further improvement of the utility model, on described steel pipe, the rear end of male thread is provided with outer torque resistant step, The periphery wall that described steel pipe enters into sealing shroud interior part has male thread, and described sealing shroud two ends are engaged with steel pipe sealing Position also be provided with the box thread that matches with described male thread.
As further improvement of the utility model, described sealing shroud is resisted using having to the corrosive medium in gas well gas liquid The elastomeric material of ability is made.
As further improvement of the utility model, described sealing shroud is made using polytetrafluoroethylmaterial material.
As further improvement of the utility model, described erosion shield be the corrosive medium in gas well gas liquid is had to The coating of imperial ability.
As further improvement of the utility model, described erosion shield is plasticizing modified epoxy powder coating.
This utility model compared with prior art, has the advantage that:This utility model passes through to set up sealing in box cupling Set, makes that steel pipe is at least part of to keep cooperation in sealing contact with sealing shroud, and in sealing contact with sealing shroud on steel pipe joins The surfaces externally and internally of conjunction part and end face is provided with erosion shield so that screw connection structure of the present utility model is simple and reliable, Good airproof performance, is greatly improved the antiseptic property of oil well pipe and its box cupling, extends the service life of oil well pipe and its box cupling.
Brief description
Fig. 1 is the structural representation of this utility model embodiment 1.
Fig. 2 is the A portion enlarged diagram in Fig. 1.
Fig. 3 is the structural representation of this utility model embodiment 2.
Specific embodiment
With reference to concrete drawings and Examples, the utility model is described in further detail.
The screw connection structure of the band coating steel pipe with corrosion proof function of the present utility model is mainly by steel pipe 2 and box cupling 1 composition, described steel pipe 2 end is machined with male thread, and described box cupling 1 two ends are machined with the female spiral shell matching with described male thread Stricture of vagina;It is provided with annular groove in the middle part of the axial direction of described box cupling 1 inwall, in described annular groove, be installed with sealing shroud 3, described sealing The length of set 3 to make to engage with box cupling 1 after steel pipe 2 at least part of enter in sealing shroud 3 and seal with sealing shroud 3 connect Touch cooperation, and described steel pipe 2 is equipped with erosion shield with the surfaces externally and internally of sealing shroud 3 mating part in sealing contact and end face 4.
In this utility model, in the middle part of the axial direction of described sealing shroud 3 inwall, it is provided with cannelure, so in steel pipe 2 and sealing shroud 3 When being engaged, sealing shroud 3 is squeezed just the space being deformed inward, it is to avoid sealing shroud 3 is squeezed bad.
The periphery wall that described steel pipe 2 enters into sealing shroud 3 interior part is the geometry of smooth surface, described sealing shroud 3 The position of two ends and steel pipe 2 cooperation in sealing contact is also set to the geometry of smooth surface.
In this utility model, described sealing shroud 3 should be using the elastic material to the corrosive medium in well liquid with defensive ability/resistance ability Material is made, and is such as made using polytetrafluoroethylmaterial material.Described erosion shield 4 is the corrosive medium in gas well gas liquid to be had resist The coating of ability, such as plastifying modified epoxy powder coating.
Embodiment 1
As shown in Figure 1 and Figure 2, the screw connection structure of the band coating steel pipe with corrosion proof function in embodiment 1 is main It is made up of steel pipe 2 and box cupling 1, described steel pipe 2 end is machined with male thread, described box cupling 1 two ends are machined with and described male thread The box thread matching;It is provided with annular groove in the middle part of the axial direction of described box cupling 1 inwall, in described annular groove, be installed with sealing Set 3, the length of described sealing shroud 3 to make to engage with box cupling 1 after steel pipe 2 at least part of enter into sealing shroud 3 interior and with Sealing shroud 3 cooperation in sealing contact, and described steel pipe 2 is equal with the surfaces externally and internally of sealing shroud 3 mating part in sealing contact and end face It is provided with erosion shield 4.
As shown in Figure 1 and Figure 2, in the present embodiment 1, in the middle part of the axial direction of described sealing shroud 3 inwall, it is provided with cannelure.
As shown in Figure 1 and Figure 2, in the present embodiment 1, between leaving between the end face of two steel pipes 2 being combined with described box cupling 1 Gap, the periphery wall that described steel pipe 2 enters into sealing shroud 3 interior part has male thread, and described sealing shroud 3 two ends are sealed with steel pipe 2 The position being engaged also is provided with the box thread matching with described male thread.
In the present embodiment 1, threaded cooperation due to having between sealing shroud 3 and steel pipe 2, sealing property is more outstanding, prevent Corrosive nature is also more preferable.
Embodiment 2
As shown in figure 3, the screw connection structure of the band coating steel pipe with corrosion proof function in embodiment 2 is mainly by steel Pipe 2 and box cupling 1 form, and described steel pipe 2 end is machined with male thread, and described box cupling 1 two ends are machined with and are matched with described male thread The box thread closing;It is provided with annular groove in the middle part of the axial direction of described box cupling 1 inwall, in described annular groove, be installed with sealing shroud 3, The length of described sealing shroud 3 to make to engage with box cupling 1 after steel pipe 2 at least part of enter in sealing shroud 3 and with sealing Cover 3 cooperations in sealing contact, and described steel pipe 2 is equipped with the surfaces externally and internally of sealing shroud 3 mating part in sealing contact and end face Erosion shield 4.
As shown in figure 3, in the present embodiment 2, being provided with cannelure in the middle part of the axial direction of described sealing shroud 3 inwall.
As shown in figure 3, in the present embodiment 2, on described steel pipe 2, the rear end of male thread is provided with outer torque resistant step 5, described The periphery wall that steel pipe 2 enters into sealing shroud 3 interior part has male thread, described sealing shroud 3 two ends and steel pipe 2 cooperation in sealing contact Position also be provided with the box thread that matches with described male thread.
The present embodiment 2 compared with Example 1, not only has between sealing shroud 3 and steel pipe 2 and threadeds cooperation, and with institute State the direct gentle touchdown of end face of two steel pipes 2 of box cupling 1 combination, substantially increase the intensity of connection.In actual applications, two The end face of root steel pipe 2 can also be the disengaged condition slightly leaving minim gap.
Further, since the outer torque resistant step 5 on steel pipe 2 is to be set directly at male thread rear end, processing technique is simple, Processing cost is low.

Claims (10)

1. there is the screw connection structure of the band coating steel pipe of corrosion proof function, including steel pipe(2)And box cupling(1), described steel pipe (2)End is machined with male thread, described box cupling(1)Two ends are machined with the box thread matching with described male thread;Its feature exists In:Described box cupling(1)It is provided with sealing shroud in the middle part of the axial direction of inwall(3), described sealing shroud(3)Length to make and box cupling(1)Connect Steel pipe after conjunction(2)At least part of enter into sealing shroud(3)Interior and and sealing shroud(3)Cooperation in sealing contact, and described Steel pipe(2)With sealing shroud(3)The surfaces externally and internally of mating part in sealing contact and end face are equipped with erosion shield(4).
2. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State box cupling(1)It is provided with annular groove, described sealing shroud in the middle part of the axial direction of inwall(3)It is installed in described annular groove.
3. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State sealing shroud(3)It is provided with cannelure in the middle part of the axial direction of inwall.
4. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State steel pipe(2)Enter into sealing shroud(3)The periphery wall of interior part is the geometry of smooth surface, described sealing shroud(3)Two ends With steel pipe(2)The position of cooperation in sealing contact is also the geometry of smooth surface.
5. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:With Described box cupling(1)In conjunction with two steel pipes(2)End face between leave gap, described steel pipe(2)Enter into sealing shroud(3)Internal The periphery wall dividing has male thread, described sealing shroud(3)Two ends and steel pipe(2)The position of cooperation in sealing contact also be provided with described The box thread that male thread matches.
6. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State steel pipe(2)The rear end of upper male thread is provided with outer torque resistant step(5), described steel pipe(2)Enter into sealing shroud(3)Interior part Periphery wall there is male thread, described sealing shroud(3)Two ends and steel pipe(2)The position of cooperation in sealing contact also is provided with and described public affairs The box thread that screw thread matches.
7. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State sealing shroud(3)Made using the elastomeric material to the corrosive medium in gas well gas liquid with defensive ability/resistance ability.
8. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State sealing shroud(3)Made using polytetrafluoroethylmaterial material.
9. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that:Institute State erosion shield(4)It is the coating to the corrosive medium in gas well gas liquid with defensive ability/resistance ability.
10. there is the screw connection structure of the band coating steel pipe of corrosion proof function as claimed in claim 1 it is characterised in that: Described erosion shield(4)For plastifying modified epoxy powder coating.
CN201620887549.1U 2016-08-16 2016-08-16 Take threaded connection structure of coating steel pipe with anti - corrosion feature Active CN205938255U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620887549.1U CN205938255U (en) 2016-08-16 2016-08-16 Take threaded connection structure of coating steel pipe with anti - corrosion feature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620887549.1U CN205938255U (en) 2016-08-16 2016-08-16 Take threaded connection structure of coating steel pipe with anti - corrosion feature

Publications (1)

Publication Number Publication Date
CN205938255U true CN205938255U (en) 2017-02-08

Family

ID=57918121

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620887549.1U Active CN205938255U (en) 2016-08-16 2016-08-16 Take threaded connection structure of coating steel pipe with anti - corrosion feature

Country Status (1)

Country Link
CN (1) CN205938255U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106287044A (en) * 2016-08-16 2017-01-04 陆金福 There is the screw connection structure of the band coating steel pipe of corrosion proof function
CN112824727A (en) * 2019-11-20 2021-05-21 宝山钢铁股份有限公司 Bimetal composite pipe threaded joint and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106287044A (en) * 2016-08-16 2017-01-04 陆金福 There is the screw connection structure of the band coating steel pipe of corrosion proof function
CN112824727A (en) * 2019-11-20 2021-05-21 宝山钢铁股份有限公司 Bimetal composite pipe threaded joint and preparation method thereof

Similar Documents

Publication Publication Date Title
CN201884831U (en) Joint structure of two-way sealing pipe
UA94640C2 (en) Tightened threaded joint of oil-field tubes
CN205938255U (en) Take threaded connection structure of coating steel pipe with anti - corrosion feature
CN201723179U (en) Air-tight oil casing nipple
CN203384526U (en) Female straight-through coupling
CN202081837U (en) Stress-resistant threaded connector with corrosive gas sealing sleeve
CN203239244U (en) Air-tight seal oil pipe screwed joint
CN201875312U (en) Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring
CN203533017U (en) Self-tightening connector connecting structure of composite pipe slip taper sleeve
CN106287044A (en) There is the screw connection structure of the band coating steel pipe of corrosion proof function
CN205173763U (en) Compressor mouth of pipe quick change coupler
CN201636461U (en) Pipe connector
CN201705230U (en) Special threading connector for sleeve with small external diameter
CN204062246U (en) One can increase the corrosion proof clip connected part of multiple tube
CN206738761U (en) A kind of high-temperature and pressure pipeline attachment structure with lining
CN205503031U (en) Adapter sleeve for oil drilling
CN203571262U (en) Two-way large-caliber pipe radial buckling and pressing connector
CN206191131U (en) Push jack formula tubular metal resonator quick -operation joint
CN203549208U (en) Leakage-proof mechanical sleeve
CN206830990U (en) A kind of rotary clamp type assembling pipe joint
CN206816818U (en) A kind of combined type V-type self-tightening seal ring
CN201943592U (en) Novel external thickening oil pipe and sleeve
CN104453738A (en) Airtight seal sleeve joint
CN202560116U (en) Double-seal anti-corrosion water injection well oil pipe
CN212056216U (en) High leakproofness screw thread pipe fitting

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant