CN209204787U

CN209204787U - Portable cement device for filtering impurities

Info

Publication number: CN209204787U
Application number: CN201821923225.4U
Authority: CN
Inventors: 王翔宇; 夏斌; 付家文; 徐凯
Original assignee: CNPC Bohai Drilling Engineering Co Ltd
Current assignee: China National Petroleum Corp; CNPC Bohai Drilling Engineering Co Ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2019-08-06
Anticipated expiration: 2028-11-21

Abstract

It include T shape three-way connection, strainer, supporting steel plate, butterfly valve and gas valve the utility model discloses a kind of portable cement device for filtering impurities；Multiple liquid pass holes are uniformly offered on supporting steel plate, it is fixed on the inner wall of T shape three-way connection in a manner of oblique 45 °~60 °, is divided into the inner space of T shape three-way connection by the admission chamber that constitutes of space and the filtrate chamber being made of remaining space in the space at supervisor inlet end and branch pipe；Strainer setting is intracavitary in filtrate and is overlying on supporting steel plate, and the filter opening aperture of strainer is less than the liquid pass hole aperture of supporting steel plate；Butterfly valve is arranged at the branch pipe nozzle of T shape three-way connection；The portable cement device for filtering impurities structure is simple, it can be realized all kinds of big partial size impurity mixed in filtering cement, saving in former embedded with conical strainer use process needs to open feed-line, the process for taking out cleaning, it effectively avoids causing after building the pressure in pipeline since impurity exists, then clears up the risk for causing cement jet to be splashed into eye during impurity.

Description

Portable cement impurity filtering device

Technical Field

The utility model relates to a petroleum industry well cementation construction operation technical field, in particular to portable cement impurity filter equipment.

Background

The well cementation project is a subdivision project in the petroleum exploration and development link, and the well cementation industry is mainly in the field, and different well cementation companies (or well cementation service units) can establish project bases in different areas or regions so as to facilitate well cementation production organization, service, management and the like, which is more prominent in foreign markets. Because ton bag package cement is deposited improperly, can lead to the oil well cement to produce the caking phenomenon under the humid climatic condition of rainy season to there is impurity to mix into wherein in the broken bag in-process of cement, the built-in conical filter screen that adopts in the past has following shortcoming:

1) traditional filter screen is placed inside cement conveying pipeline, because the mesh diameter is irregular, cement impurity filtration efficiency is low, leads to behind the cement impurity embedding valve rubber that the cement truck is big pump to go up the water efficiency poor when the on-the-spot well cementation construction, can't go up water under the serious condition, impurity blocks up cement truck thoughtlessly mixes a jar filter screen, leads to the scene such as construction interrupt, and very big degree influences construction safety.

2) In the traditional process of cleaning impurities by using the filter screen, a conveying pipeline needs to be opened, and the impurities are cleaned after being taken out of a cone, so that the cleaning process is complicated; and impurity blocks up the filter screen and leads to behind the suppressing pressure in the pipeline among the cement filtering process, there is the risk that cement splashes into the eye in the clearance impurity in-process. Therefore, a novel filtering device needs to be designed, small particle impurities in cement are effectively removed, the replacement frequency of valve accessories is reduced, and the safety of field construction is guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure just can dope the portable cement impurity filtering device of all kinds of impurity in the cement that the rapid filtration is greater than 6mm diameter.

Therefore, the utility model discloses technical scheme as follows:

a portable cement impurity filtering device comprises a T-shaped three-way joint, a filter screen, a supporting steel plate and a butterfly valve; the support steel plate is uniformly provided with a plurality of liquid passing holes which are fixed on the inner wall of the T-shaped three-way joint in an inclined 45-60-degree mode, so that the inner space of the T-shaped three-way joint is divided into a liquid inlet cavity formed by a space close to the liquid inlet end of the main pipe and a space in the branch pipe and a filtrate cavity formed by the rest space; the filter screen is arranged in the filtrate cavity and covers the support steel plate, and the aperture of a filter hole of the filter screen is smaller than that of a filtrate passing hole of the support steel plate; the butterfly valve is arranged at a branch pipe orifice of the T-shaped three-way joint.

In the device, the T-shaped tee joint is separated into two cavities by the supporting steel plate, so that the filter liquor containing silt and the filter liquor after silt are separated, meanwhile, a supporting piece is also provided for the arrangement of the filter screen, and the filter screen is prevented from being damaged under the long-term scouring of the filter liquor containing silt.

Further, an air inlet pipe communicated with the filtrate cavity is arranged on a main pipe of the T-shaped three-way joint, and a pipe orifice of the air inlet pipe faces the filter screen; and a ventilation valve is arranged on the air inlet pipe.

Further, the filter screen is a metal screen with the aperture of filter holes being 6 mm.

The size of the filter screen is preferably consistent with that of the support steel plate, and the filter screen with the aperture of 6mm is selected because cement impurities with large particle size larger than 6mm have great damage to subsequent inflow equipment, while cement impurities with small particle size do not have excessive influence.

Furthermore, a first connecting union and a second connecting union are respectively arranged at a pipe orifice of a liquid inflow end and a pipe orifice of a liquid outflow end of the main pipe of the T-shaped three-way joint.

Further, the inner diameter of the main pipe of the T-shaped three-way joint is consistent with the inner diameter of the branch pipe.

Furthermore, the butterfly valve is fixed at a branch pipe orifice of the T-shaped three-way joint through a flange.

Furthermore, the diameter of the liquid passing hole on the supporting steel plate is 20mm, and the pitch of the liquid passing holes is 25 mm.

Furthermore, the supporting steel plate is fixed on the inner wall of the T-shaped three-way joint in an inclined 45-degree mode, so that cement impurities left in the liquid inlet cavity by the filter screen are separated and fall into a branch pipe below under the action of gravity and scouring.

Further, the valve is a check valve, a butterfly valve or a ball valve.

Compared with the prior art, this portable cement impurity filter equipment simple structure can realize filtering all kinds of large-particle size impurity that mix in the cement, need open pipeline in saving former built-in conical screen use, takes out the process of clearance, effectively avoids because impurity exists and leads to behind the suppressing pressure in the pipeline, clears up the impurity in-process again and leads to the risk that the cement splashes into the eye.

Drawings

Fig. 1 is the structure schematic diagram of the portable cement impurity filtering device of the utility model.

Detailed Description

The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention.

As shown in FIG. 1, the portable cement impurity filtering device comprises a T-shaped tee joint 11, a filter screen 2, a supporting steel plate 3 and a butterfly valve 6; wherein,

the T-shaped three-way joint 11 is a commercially available 5-inch three-way joint with three equal-diameter interfaces, and consists of a main pipe and a branch pipe which is arranged perpendicular to the main pipe and communicated with the main pipe; the two ports of the main pipe are respectively used as a liquid inflow end and a liquid outflow end, and a first connecting union 4 and a second connecting union 9 are respectively arranged on the main pipe and used for connecting the device to a pipeline needing to be subjected to impurity removal of cement impurities for filtering the cement impurities;

the support steel plate 3 is arranged on the inner side of the T-shaped three-way joint 11 and is fixed on the inner wall of the T-shaped three-way joint 11 at an inclination angle of 45 degrees, the inner space of the T-shaped three-way joint 11 is divided into a liquid inlet cavity I formed by a space close to the liquid inlet end of the main pipe and a space in the branch pipe and a filtrate cavity II formed by the rest space, a plurality of liquid passing holes are uniformly distributed on the support steel plate 3, specifically, the aperture of each liquid passing hole is 20mm, and the hole pitch is 25 mm; the filter screen 2 is a metal screen with the shape and the size consistent with those of the support steel plate 3, and the aperture of the filter holes on the metal screen is 6 mm; the filter screen 2 is arranged in the filtrate cavity II and welded on the support steel plate 3 in a parallel and fitting manner, so that after liquid containing cement impurities entering the liquid inlet cavity I is filtered by the filter screen 2, the cement impurities with the particle size larger than 6mm are remained in the liquid inlet cavity I, and only filtrate containing small-particle-size impurities flows into the filtrate cavity II;

a butterfly valve 6 is arranged at the pipe orifice of the branch pipe of the T-shaped three-way joint 11, the butterfly valve 6 is fixed at the pipe orifice of the branch pipe of the T-shaped three-way joint 11 by a flange 5 by adopting a fixing bolt 8 and a nut 7, so that the branch pipe is used as a collecting container for cement impurities, most of the cement impurities in the liquid inlet cavity I fall into the branch pipe below under the action of gravity and scouring, and the small part of the cement impurities is retained at the liquid passing holes and gaps of the filter screen and the support steel plate; in order to facilitate cleaning of small cement impurities left at liquid passing holes and gaps of the filter screen and the support steel plate, an air inlet pipe 10 communicated with the filtrate cavity II is arranged on a main pipe of the T-shaped three-way joint 11, a pipe orifice of the air inlet pipe 10 faces to the center of the filter screen 2, and a check valve 1 is arranged on the air inlet pipe 10; during filtration, check valve 1 is in the closed condition, and when carrying out impurity clearance, check valve 1 opens, simultaneously with intake pipe 10 and air supply pipeline connection for carry the power air supply of clearance impurity to the person in charge of T shape three way connection 11.

The present invention has been described in detail with reference to the drawings and examples, which are illustrative and not restrictive, and several examples can be given by way of limitation, and various modifications can be made by those skilled in the art based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims

1. A portable cement impurity filtering device is characterized by comprising a T-shaped three-way joint (11), a filter screen (2), a supporting steel plate (3) and a butterfly valve (6); a plurality of liquid passing holes are uniformly distributed on the support steel plate (3) and are fixed on the inner wall of the T-shaped three-way joint (11) in an inclined 45-60-degree mode, so that the inner space of the T-shaped three-way joint (11) is divided into a liquid inlet cavity formed by a space close to the liquid inlet end of the main pipe and a space in the branch pipe and a filtrate cavity formed by the rest space; the filter screen (2) is arranged in the filtrate cavity and covers the support steel plate (3); the aperture of the filter holes of the filter screen (2) is smaller than that of the liquid passing holes of the support steel plate (3); the butterfly valve (6) is arranged at a branch pipe orifice of the T-shaped three-way joint (11).

2. The portable cement impurity filtering device according to claim 1, wherein an air inlet pipe (10) communicated with the filtrate chamber is provided on the main pipe of the T-shaped three-way joint (11), and the orifice of the air inlet pipe (10) faces the filter screen (2); and a ventilation valve (1) is arranged on the air inlet pipe (10).

3. The portable cement impurity filtering device according to claim 1, wherein the filtering net (2) is a metal net with 6mm of filtering hole diameter.

4. The portable cement impurity filtering device as claimed in claim 1, wherein a first connection union (4) and a second connection union (9) are provided at a pipe orifice of a liquid inflow end and a pipe orifice of a liquid outflow end of a main pipe of said T-shaped three-way joint (11), respectively.

5. The portable cement impurity filtering apparatus as claimed in claim 1, wherein the main pipe inner diameter of said T-shaped tee joint (11) is identical to the branch pipe inner diameter.

6. The portable cement impurity filtering device as claimed in claim 1, wherein said butterfly valve (6) is fixed at a branch pipe orifice of said tee fitting (11) by a flange (5).

7. The portable cement impurity filtering device according to claim 1, wherein the liquid passing holes on the supporting steel plate (3) have a hole diameter of 20mm and a hole pitch of 25 mm.

8. The portable cement impurity filtering device as claimed in claim 1, wherein said supporting steel plate (3) is fixed on the inner wall of said T-shaped tee joint (11) in a manner of being inclined at 45 °.

9. A portable cement impurity filtering device according to claim 2, wherein said valve (1) is a check valve, butterfly valve or ball valve.