CN203362087U - Outer shell of middle body for pulser - Google Patents
Outer shell of middle body for pulser Download PDFInfo
- Publication number
- CN203362087U CN203362087U CN 201320395731 CN201320395731U CN203362087U CN 203362087 U CN203362087 U CN 203362087U CN 201320395731 CN201320395731 CN 201320395731 CN 201320395731 U CN201320395731 U CN 201320395731U CN 203362087 U CN203362087 U CN 203362087U
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- CN
- China
- Prior art keywords
- pulser
- outer shell
- base body
- middle body
- thickness
- 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 an outer shell of a middle body for a pulser. The outer shell of the middle body for the pulser comprises a base body, wherein the base body is a titanium alloy base body, a reserved internal-control groove is formed in the surface of the base body, a hard alloy spraying coating is arranged in the reserved internal-control groove, and the thickness of the hard alloy spraying coating is 0.2mm. The outer shell of the middle body for the pulser is simple in structure, reasonable in design, high in hardness and good in anti-pressure capacity, resists impact, and is good in stability, an opening is not bonded in the process of connection, and repeated installation can be conveniently carried out.
Description
Technical field
The utility model relates to a kind of shell, is specifically related to a kind of pulser intermediate shell.
Background technology
At present, the intermediate shell of 650MWD at home, at the rotor position, be the intensity of raising intermediate shell, the hard chrome plating that adopt are processed more both at home and abroad, due to the very easily oxidation of domestic titanium alloy material top layer, chromed hardened technical matters is strict need to need the pretreatment such as pickling, copper facing before chromium plating, and the chromium plating of intermediate shell is with high costs.And the thickness of chromium plating is limited to be generally between 0.008-0.05mm, and its hardness is 54HRC, very easily be worn and impact under the intermediate shell condition severe in down-hole, reduced pulser down-hole application life.
Summary of the invention
The purpose of this utility model is exactly the defect existed for prior art, provides a kind of simple in structure, reasonable in design, and hardness is high, anti-pressure ability is strong, glutinous mouthful of shock-resistant, good stability, connection, the pulser of being convenient to repeatedly install intermediate shell.
Its technical scheme is: pulser intermediate shell, comprise matrix, described matrix is titanium alloy substrate, and the surface of described matrix is provided with the reserved groove of internal control, be provided with Spray Coating Carbide in the reserved groove of described internal control, the thickness of described Spray Coating Carbide is 0.2mm.
The degree of depth of the reserved groove of described internal control and the thickness of Spray Coating Carbide are suitable.
The utility model compared with prior art, has the following advantages: simple in structure, reasonable in design, hardness is high, anti-pressure ability is strong, glutinous mouthful of shock-resistant, good stability, connection, is convenient to repeatedly install.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
With reference to Fig. 1, pulser intermediate shell, comprise matrix 1, described matrix 1 is titanium alloy substrate, the surface of described matrix 1 is provided with the reserved groove 2 of internal control, in the reserved groove 2 of described internal control, is provided with Spray Coating Carbide 3, and the thickness of described Spray Coating Carbide 3 is 0.2mm.
The degree of depth of the reserved groove 2 of described internal control and the thickness of Spray Coating Carbide 3 are suitable.
Wherein, matrix 1 toughness of material is good, and hardness is high, and anti-pressure ability is superior.Titanium alloy T C11 has plasticity, heat stability and fatigue strength preferably; Acicular constituent has higher creep rupture strength, creep strength and fracture toughness, and its intensity is high, and titanium alloy is worked in the severe slurry environment medium of complexity, and its etch resistant properties is good; Resistance to spot corrosion, acid etching, stress corrosion is strong especially; Organic article of alkali, chloride, chlorine, nitric acid, sulfuric acid etc. are had to good resistance to corrosion.
The rear hardness of coated with hard alloy spraying coating 3 promotes obviously, and impact resistance is good.Carbide alloy has that hardness is high, wear-resisting, intensity and a series of premium properties, particularly its high rigidity and abrasion resistance such as toughness is better, heat-resisting, corrosion-resistant, even also substantially remain unchanged at the temperature of 500 ℃, still has very high hardness in the time of 1000 ℃.The hardness of intermediate shell is brought up to 74HRC, greatly improved the risk that has reduced the 650MWD underground work application life of intermediate shell.
The carbide alloy spraying coating process is simple, good stability.Product only need carry out the reserved groove 2 of internal control before carrying out the carbide alloy spraying, then carries out blasting treatment and can carry out the carbide alloy spraying, and spray efficiency is high, and coating thickness is even, and coating thickness can reach 0.2mm, stable performance after spraying.
Product cannot not be threaded glutinously mouthful, is convenient to the installation repeatedly of product.650MWD often goes into the well after certain hour all will detect maintenance, and the titanium alloy material chemical property is active, surface very easily produces layer oxide film, has reduced the be threaded risk of adhesive buckle of product.
The utility model is simple in structure, reasonable in design, and hardness is high, anti-pressure ability is strong, glutinous mouthful of shock-resistant, good stability, connection, is convenient to repeatedly install.
Claims (2)
1. pulser intermediate shell, comprise matrix, it is characterized in that: described matrix is titanium alloy substrate, and the surface of described matrix is provided with the reserved groove of internal control, be provided with Spray Coating Carbide in the reserved groove of described internal control, the thickness of described Spray Coating Carbide is 0.2mm.
2. pulser according to claim 1 intermediate shell is characterized in that: the degree of depth of the reserved groove of described internal control and the thickness of Spray Coating Carbide are suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320395731 CN203362087U (en) | 2013-07-04 | 2013-07-04 | Outer shell of middle body for pulser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320395731 CN203362087U (en) | 2013-07-04 | 2013-07-04 | Outer shell of middle body for pulser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362087U true CN203362087U (en) | 2013-12-25 |
Family
ID=49809873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320395731 Expired - Fee Related CN203362087U (en) | 2013-07-04 | 2013-07-04 | Outer shell of middle body for pulser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362087U (en) |
-
2013
- 2013-07-04 CN CN 201320395731 patent/CN203362087U/en not_active Expired - Fee Related
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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: 20131225 Termination date: 20210704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |