CN203081828U - Welded metal corrugated tube protector - Google Patents
Welded metal corrugated tube protector Download PDFInfo
- Publication number
- CN203081828U CN203081828U CN 201220645903 CN201220645903U CN203081828U CN 203081828 U CN203081828 U CN 203081828U CN 201220645903 CN201220645903 CN 201220645903 CN 201220645903 U CN201220645903 U CN 201220645903U CN 203081828 U CN203081828 U CN 203081828U
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- CN
- China
- Prior art keywords
- central siphon
- protector
- welded
- small corrugated
- corrugated pipe
- 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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Abstract
The utility model discloses a welded metal corrugated tube protector and belongs to the technical field of protecting devices used for electric submersible centrifugal pumps. The protector comprises a big corrugated tube set, a small corrugated tube set, a shaft protection tube, an annular cover plate, a positioning sleeve and a shaft protection tube end joint, wherein the big corrugated tube set and the small corrugated tube set are installed on the shaft protection tube in a sleeved mode, one end of the big corrugated tube set is welded on the shaft protection tube end joint, and the shaft protection tube end joint is arranged at one end of the shaft protection tube. One end of the small corrugated tube set is welded on the positioning sleeve, the positioning sleeve is arranged at the other end of the shaft protection tube, and the other end of the big corrugated tube set is connected with the other end of the small corrugated tube set through the annular cover plate. Mainly aiming at the working conditions of high temperature and corrosiveness in the production of crude oil, the protector contains expanded dynamo oil through stretching and compressing of corrugated tubes of the protector, and therefore normal running of the electric pumps is guaranteed.
Description
Technical field
The utility model belongs to electric submersible centrifugal pump protective gear technical field, is specifically related to a kind of welded metal bellow protector.This protector be primarily aimed in the crude oil production high temperature and the working condition that is corrosive under, the dynamo oil that holds expansion by the stretching and the compression of its bellows, thus guarantee the normal operation of electric pump.
Background technique
The submersible electric pump protective gear that now uses adopts the capsule protector, and capsule is inboard to be contacted with dynamo oil, and the outside contacts with well liquid, and the well liquid temp is 300 ℃, and has corrosivity and (contain CO
2, H
2S, CL etc.).Its working principle is: when Electric Submersible Pump Unit was lowered to oil well work, dynamo oil raise with temperature and expands, and capsule is spreading radially, holds the dynamo oil of expansion; When to be shut down, temperature reduces, and dynamo oil shrinks, and capsule shrinks thereupon, so perseveration.Under this operating mode, capsule is very easily aging and damaged, and working life is very short, and maintenance is frequent.The welded metal bellow expander has rational structure, good material, and under equal conditions, be more than 5 times of capsule working life, and service cycle is long, save cost, improved manufacturing efficiency.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part; a kind of welded metal bellow protector is provided; this protector has rational structure, good material; under equal conditions; be more than 5 times of capsule protector working life, and service cycle is grown, saves cost, improved manufacturing efficiency.
Technical solutions of the utility model are as follows:
A kind of welded metal bellow protector comprises big bellows group, small corrugated pipe group, protects central siphon, annular cover plate, setting sleeve and protects central siphon end joint; Wherein: big bellows group is set in the small corrugated pipe group and protects on the central siphon, and an end of big bellows group is welded in and protects on the central siphon end joint, protect the central siphon end save with an end that protects central siphon by being threaded; One end of small corrugated pipe group is welded on the setting sleeve, and setting sleeve is arranged at the other end that protects central siphon, and the other end of big bellows group is connected by annular cover plate with the other end of small corrugated pipe group, thereby forms the container of sealing.
The described central siphon end that protects saves and protects the hole that setting is in communication with the outside on the central siphon.
Described big bellows group is welded together by the dunnage that adapts with big corrugated sheet size by several big bellowss (being preferably 3), and described small corrugated pipe group is welded together by the dunnage that adapts with the small corrugated pipe size by several small corrugated pipes (being preferably 2).
The inside diameter ranges of described big bellows is 90-100mm, and the external diameter scope is 110-118mm; The inside diameter ranges of described small corrugated pipe is 42-50mm, and the external diameter scope is 60-70mm.
Described welded metal bellow protector material is 316L.
Usually the well liquid of dynamo oil in the protection and the outside balance that keep-ups pressure; when the motor rotation dynamo oil expands; dynamo oil is from axle and protect the slit of central siphon and upwards flow; enter the bellows inner chamber by the hole of protecting central siphon end joint and protect on the central siphon, bellows moves upward holding the dynamo oil of expansion, when to be shut down; the dynamo oil cooling is shunk; return by former road, bellows moves downward, and replenishes dynamo oil to motor.Perseveration like this.Above-mentioned welded metal bellow protector is the container of sealing, can only be in communication with the outside by the hole of protecting central siphon end joint and protect on the central siphon.
The preparation process of described welded metal bellow protector, step is as follows:
1) diaphragm punching out: by the upper and lower diaphragm of big bellows of required specification punching out and small corrugated pipe, the diaphragm waveform must be full.
2) welding: at first corresponding each a slice of upper and lower diaphragm is partnered, form a constituent element along the inward flange girth weld, and then several constituent element strings together, make welded bellows along the outward edge girth weld.(with the inside and outside edge deburring of the diaphragm of punching out, guarantee the circularity of diaphragm before the welding)
3) ageing treatment: the bellows after will welding carries out ageing treatment under vacuum condition, and wherein: aging temp is 350～400 ℃, and the vacuum pressure value is-0.9 ~-1MPa, the processing time is more than 4 hours;
4) assembling: will a plurality of big bellowss weld by dunnage respectively and form big bellows group, an end of big bellows group with protect central siphon end joint and weld; A plurality of small corrugated pipes are welded formation small corrugated pipe group by dunnage respectively, one end of small corrugated pipe group with protect central siphon setting sleeve welding, to protect central siphon end joint at last and protect the central siphon matching thread screwing, weld with annular cover plate in the middle of the large and small bellows group.Protector is by setting sleeve and protects central siphon end joint and do the location, is installed in the dynamo oil chamber of electric submersible centrifugal pump.
The described MICROBEAM PLASMA WELDING mode that is welded as, its process parameter is: welding speed is 1.4-1.8r/min, current value is 2.5-3A.
The utlity model has following beneficial effect:
1, ripple tube wave shape is designed to the S type in the utility model, can obtain enough displacement amounts: with big bellows is benchmark, and displacement amount is 105-110mm during stretching, and displacement amount is 90-98mm. during compression.
2, bellows adopts double-deck welding in the utility model, can satisfy the rigidity value requirement when stretching and compression: big bellows stiffness value is 26-30N/mm, and the small corrugated pipe rigidity value is 14-16N/mm.
3, the utility model is made of a plurality of big bellows and the small corrugated pipe that connect by dunnage, can prevent the bellows unstability at work.
4, bellows does not lose bullet at work through the high-temperature vacuum ageing treatment in the utility model.
5, the utility model protector structure compactness, easy for installation is applicable to that using effect is good under high temperature, low temperature and the operating mode that is corrosive, and the life-span is long; And can be designed to multiple model according to actual conditions.
Description of drawings
Fig. 1 is the utility model welded metal bellow protector structure schematic representation.
Among the figure: 1-protects central siphon end joint; The big bellows of 2-; 3-dunnage A; The 4-annular cover plate; The 5-small corrugated pipe; 6-dunnage B; 7-protects the central siphon setting sleeve; 8-protects central siphon.
Embodiment:
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
Figure 1 shows that the utility model welded metal bellow protector one preferred construction, comprise big bellows group, small corrugated pipe group, protect central siphon 8, annular cover plate 4, protect central siphon setting sleeve 7 and protect central siphon end joint 1; Wherein: big bellows group is set in the small corrugated pipe group and protects on the central siphon 8, an end of big bellows group with protect central siphon end joint 1 and weld together, protect the central siphon end save 1 with an end that protects central siphon 8 by being threaded; One end of small corrugated pipe group is welded on the setting sleeve 7, and setting sleeve 7 is arranged at the other end that protects central siphon 8, and the other end of big bellows group is connected (welding together) by annular cover plate 4 with the other end of small corrugated pipe group, thereby forms the container of sealing.
Describedly protect central siphon end joint 1 and protect the hole that settings is in communication with the outside on the central siphon 8, protector can only be in communication with the outside with the hole of protecting on the central siphon 8 by protecting central siphon end joint 1.
Described big bellows group is made up of 3 big bellowss 2, weld together by the dunnage A3 that matches with big corrugated sheet 2 sizes between the big bellows 2, the small corrugated pipe group is made up of 2 small corrugated pipes 5, welds together by the dunnage B6 that adapts with small corrugated pipe 5 sizes between the small corrugated pipe 5.
The material of above-mentioned welded metal bellow protector is 316L, and its step of preparation process is as follows:
1) diaphragm punching out: select the upper and lower diaphragm of open-type inclinable press (80-100T) by big bellows of specification punching out and small corrugated pipe for use, the bellows Waveform Design becomes the S type; Wherein: the internal diameter 93mm of big bellows, external diameter 112mm; The internal diameter 46mm of small corrugated pipe, external diameter scope 63mm.
2) welding: at first corresponding each a slice of upper and lower diaphragm is partnered, form a constituent element along the inward flange girth weld, and then several constituent element strings together, make welded bellows along the outward edge girth weld.(with the inside and outside edge deburring of the diaphragm of punching out, guarantee the circularity of diaphragm before the welding)
3) ageing treatment: the bellows after will welding is packed into and is vacuumized (anti-oxidation) in the vacuum tank, putting into chamber type electric resistance furnace then heats and carries out ageing treatment, wherein: aging temp is 350～400 ℃, the vacuum pressure value is-0.9 ~-1MPa, continue more than 4 hours, take out vacuum tank, the immersion cooling.
4) assembling: will a plurality of big bellowss weld by dunnage respectively and form big bellows group, an end of big bellows group with protect central siphon end joint and weld; A plurality of small corrugated pipes are welded formation small corrugated pipe group by dunnage respectively, one end of small corrugated pipe group with protect central siphon setting sleeve welding, to protect central siphon end joint at last and protect the central siphon matching thread screwing, weld with annular cover plate in the middle of the large and small bellows group.Protector is by setting sleeve and protects central siphon end joint and do the location, is installed in the dynamo oil chamber of electric submersible centrifugal pump.
The described MICROBEAM PLASMA WELDING mode that is welded as, its process parameter is: welding speed is 1.4-1.8r/min, current value is 2.5-3A.
Displacement amount is 110mm when its big bellows of protector of above-mentioned technology preparation stretches, and displacement amount is 95mm. during compression; Big bellows stiffness value is 30N/mm, and the small corrugated pipe rigidity value is 15N/mm.
Claims (7)
1. welded metal bellow protector is characterized in that: this protector comprises big bellows group, small corrugated pipe group, protects central siphon, annular cover plate, setting sleeve and protects central siphon end joint; Wherein: big bellows group is set in the small corrugated pipe group and protects on the central siphon, and an end of big bellows group is welded in and protects on the central siphon end joint, protect the central siphon end save with an end that protects central siphon by being threaded; One end of small corrugated pipe group is welded on the setting sleeve, and setting sleeve is arranged at the other end that protects central siphon, and the other end of big bellows group is connected by annular cover plate with the other end of small corrugated pipe group.
2. welded metal bellow protector according to claim 1 is characterized in that: the described setting on protecting central siphon end joint and protecting central siphon and hole that the external world is connected.
3. welded metal bellow protector according to claim 1 is characterized in that: described big bellows group is welded together by dunnage by several big bellowss, and described small corrugated pipe group is welded together by dunnage by several small corrugated pipes.
4. welded metal bellow protector according to claim 3 is characterized in that: the quantity of described big bellows is 3, and the quantity of described small corrugated pipe is 2.
5. welded metal bellow protector according to claim 3 is characterized in that: the inside diameter ranges of described big bellows is 90-100mm, and the external diameter scope is 110-118mm; The inside diameter ranges of described small corrugated pipe is 42-50mm, and the external diameter scope is 60-70mm.
6. welded metal bellow protector according to claim 1 is characterized in that: described welded metal bellow protector material is 316L.
7. welded metal bellow protector according to claim 3 is characterized in that: described big bellows and its Waveform Design of small corrugated pipe become S shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645903 CN203081828U (en) | 2012-11-29 | 2012-11-29 | Welded metal corrugated tube protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645903 CN203081828U (en) | 2012-11-29 | 2012-11-29 | Welded metal corrugated tube protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081828U true CN203081828U (en) | 2013-07-24 |
Family
ID=48827669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220645903 Expired - Fee Related CN203081828U (en) | 2012-11-29 | 2012-11-29 | Welded metal corrugated tube protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050675B (en) * | 2016-05-31 | 2018-08-28 | 上海理工大学 | A kind of fluid pump or compressor of wave transmission |
-
2012
- 2012-11-29 CN CN 201220645903 patent/CN203081828U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050675B (en) * | 2016-05-31 | 2018-08-28 | 上海理工大学 | A kind of fluid pump or compressor of wave transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |