CN201897558U - Protective cover of pressure sensing membrane for drilling fluid density sensor - Google Patents
Protective cover of pressure sensing membrane for drilling fluid density sensor Download PDFInfo
- Publication number
- CN201897558U CN201897558U CN2010206183997U CN201020618399U CN201897558U CN 201897558 U CN201897558 U CN 201897558U CN 2010206183997 U CN2010206183997 U CN 2010206183997U CN 201020618399 U CN201020618399 U CN 201020618399U CN 201897558 U CN201897558 U CN 201897558U
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- CN
- China
- Prior art keywords
- protective cover
- cup
- fast
- drilling fluid
- rim
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- 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 - Lifetime
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Abstract
The utility model relates to a protective cover of a pressure sensing membrane for a drilling fluid density sensor. The protective cover comprises a membrane protective cover and fast-assembly snap rings, wherein the membrane protective cover is a cup body with a cup rim turned outwards, a plurality of through holes are formed at the cup bottom, a square gap is formed between the side surface of the cup body and the rim of the cup, and through holes are formed on both sides of the gap; the fast-assembly snap rings are two semicircular ring bodies with grooves on the inner end surfaces, wherein an opening with the same size as that of the square gap is formed along the bottom side surface of the groove in one semicircular ring body, one ends of both the tow semicircular ring bodies are connected through a shaft, and the other ends of both the tow semicircular ring bodies are connected through a screw in a screwed manner; and the membrane protective cover is connected with the fast-assembly snap rings, so that the rim of the cup of the membrane protective cover is placed in the groove of the fast-assembly snap ring, and the square gap is aligned with the opening of the semicircular ring body, and the fast-assembly snap ring is fastened through the screw. The protective cover has the advantages of material-saving, convenience in installation and instrument maintenance, simplification of disassembly, and high measuring accuracy; and the protective cover also can be used for protecting the pressure sensing membrane during the measurement of liquid density and liquid level of liquid with physical characteristics similar to drilling fluid.
Description
Technical field
The utility model relates to a kind of drilling fluid density sensor pressure-sensitive diaphragm protective device, particularly a kind of drilling fluid density sensor pressure-sensitive diaphragm protective cover.
Technical background
Drilling fluid density is the important detected parameters of finding hydrocarbon-bearing pool in the petroleum prospecting and guaranteeing drilling safety.The drilling fluid density sensor adopts the distance type differential pressure transmitter, utilizes the deformation of pressure-sensitive diaphragm, acts on the sensor by the topping up in the kapillary, reaches the purpose that pressure signal is converted into electric signal.The principal ingredient of drilling fluid is mud, sand, rubble etc.In use, for the protection isolation diaphragm is not damaged, should avoid hard thing to touch diaphragm.And in oilfield drilling, mud flow rate is unstable and carry a large amount of silt particles, is easy to pressure-sensitive diaphragm is caused damage, causes transmitter to damage.Drilling fluid density sensor pressure-sensitive diaphragm protective device is the round-meshed rectangular parallelepiped Stainless Steel Shell that is connected as a single entity with sensor stand in the market, and volume is big, heaviness, and not easy to clean, maintenance is for the scene use brings certain trouble.
Summary of the invention
Problem in view of above existence, the utility model provides a kind of protective cover, concrete technical scheme is: a kind of drilling fluid density sensor pressure-sensitive diaphragm protective cover, comprise diaphragm guard shield, fast-assembling snap ring, it is characterized in that: described diaphragm guard shield is that rim of a cup is to the cup that turns up, cup has several through holes at the end, and there is a square gap at cup side to rim of a cup place, and respectively there is a through hole gap both sides; Described fast-assembling snap ring is two reeded semi-circular ring of inner face, one of them semi-circular ring along the bottom side of groove have one with the measure-alike opening of square gap, two semi-circular ring one ends connect other end screw threads stressed joint with axle; The rim of a cup that diaphragm guard shield and fast-assembling snap ring are connected to the diaphragm guard shield places in the groove of fast-assembling snap ring, and square gap is aimed at the semi-circular ring opening, tightens up the fast-assembling snap ring with screw.
The beneficial effects of the utility model are: economical with materials, simple installation is easy to dismounting, makes things convenient for instrument maintenance.The accuracy of measurement height; The protection of the pressure-sensitive diaphragm when this protective cover mode also can be applicable to liquid density measurement similar to the drilling fluid physical characteristics and level gauging.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model diaphragm shield structure synoptic diagram.
Fig. 3 is the utility model quick-mounting clamp ring structure synoptic diagram.
Embodiment
As shown in Figure 1, 2, 3, diaphragm guard shield 1 for rim of a cup to the cup 1-1 that turns up, cup has several through holes at the end, there is a square gap 3 at cup 1-1 side to rim of a cup place, respectively there is a through hole gap 3 both sides; Fast-assembling snap ring 2 is semi-circular ring 6 of two inner faces fluted 4, one of them semi-circular ring 6 along the bottom side of groove 4 have one with the measure-alike opening of square gap 3, this opening can prevent effectively that silt particle is piled up in the drilling fluid, guarantee accuracy of measurement, two semi-circular ring 6 one ends connect with axle, and the other end screws connection with screw 5; During use, after diaphragm guard shield 1 and diaphragm flange aligned, place in the groove 4 of fast-assembling snap ring 2, and square gap 3 is aimed at semi-circular ring 6 openings, the screw 5 that screws fast-assembling snap ring 2 tightens up promptly and installs, and during dismounting, unscrews fast-assembling snap ring 2 screws 5 and gets final product.
Claims (1)
1. drilling fluid density sensor pressure-sensitive diaphragm protective cover, comprise diaphragm guard shield (1), fast-assembling snap ring (2), it is characterized in that: described diaphragm guard shield (1) is that rim of a cup is to the cup that turns up (1-1), cup has several through holes at the end, there is a square gap (3) cup (1-1) side to the rim of a cup place, respectively there is a through hole gap (3) both sides; Described fast-assembling snap ring (2) is the semi-circular ring (6) of two inner faces fluted (4), one of them semi-circular ring (6) along the bottom side of groove (4) have one with the measure-alike opening of square gap (3), two semi-circular ring (6) one ends connect with axle, and the other end screws connection with screw (5); Diaphragm guard shield (1) places in the groove (4) of fast-assembling snap ring (2) with the rim of a cup that fast-assembling snap ring (2) is connected to diaphragm guard shield (1), and square gap (3) is aimed at semi-circular ring (6) opening, tightens up fast-assembling snap ring (2) with screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183997U CN201897558U (en) | 2010-11-23 | 2010-11-23 | Protective cover of pressure sensing membrane for drilling fluid density sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183997U CN201897558U (en) | 2010-11-23 | 2010-11-23 | Protective cover of pressure sensing membrane for drilling fluid density sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897558U true CN201897558U (en) | 2011-07-13 |
Family
ID=44255463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206183997U Expired - Lifetime CN201897558U (en) | 2010-11-23 | 2010-11-23 | Protective cover of pressure sensing membrane for drilling fluid density sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654203A (en) * | 2017-09-28 | 2018-02-02 | 中石化石油工程技术服务有限公司 | Drilling hydraulic differential density sensor current stabilization bogey |
-
2010
- 2010-11-23 CN CN2010206183997U patent/CN201897558U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654203A (en) * | 2017-09-28 | 2018-02-02 | 中石化石油工程技术服务有限公司 | Drilling hydraulic differential density sensor current stabilization bogey |
| CN107654203B (en) * | 2017-09-28 | 2024-03-05 | 中石化石油工程技术服务股份有限公司 | Steady flow bearing device for drilling fluid pressure difference type density sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |