CN203430480U - Blocking ball and seat assembly - Google Patents

Blocking ball and seat assembly Download PDF

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Publication number
CN203430480U
CN203430480U CN201320534519.9U CN201320534519U CN203430480U CN 203430480 U CN203430480 U CN 203430480U CN 201320534519 U CN201320534519 U CN 201320534519U CN 203430480 U CN203430480 U CN 203430480U
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CN
China
Prior art keywords
seat
ball
blocking
stainless steel
block
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
CN201320534519.9U
Other languages
Chinese (zh)
Inventor
张淞源
贾广生
杜敏
卢佳欢
王瑞其
刘若琪
邓鸣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daqing Tiandezhong Petroleum Science & Technology Co Ltd
Original Assignee
Daqing Tiandezhong Petroleum Science & Technology Co Ltd
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 Daqing Tiandezhong Petroleum Science & Technology Co Ltd filed Critical Daqing Tiandezhong Petroleum Science & Technology Co Ltd
Priority to CN201320534519.9U priority Critical patent/CN203430480U/en
Application granted granted Critical
Publication of CN203430480U publication Critical patent/CN203430480U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a blocking ball and seat assembly. The problem that an existing blocking ball and seat assembly is unreliable in sealing performance after being used for a long period of time is mainly solved. The blocking ball and seat assembly is characterized in that a ball seat (1) is hollow, the upper portion of an inner hole is tapered, the upper portion of the ball seat (1) is provided with a blocking seat (5), and the ball seat (1) and the blocking seat (5) are connected with an external connecting hoop (3). A stainless steel ball (2) is arranged inside the blocking seat (5), and the outer diameter of the stainless steel ball is matched with the middle of the tapered hole in the upper portion of the ball seat (1) and smaller than the inner diameter of the blocking seat (5). A blocking piece (4) is connected onto the inner side of the upper portion of the blocking seat (5) in a threaded mode and provided with a plurality of through holes in the vertical direction. The blocking ball and seat assembly is simple in structure and reliable in sealing performance.

Description

Block and seat
Technical field
The utility model relates to field, oil field, a kind of for blocking and seat on oil extraction in oil field tubing string specifically.
Background technology
While recovering the oil on oil field, oil well pump below is connected with conventionally blocks and seat, and while carrying on sucker rod, ball is up, and oil flow channel is opened, and when sucker rod is descending, ball is descending, seals up oil flow channel, plays the effect of ball-and-seat.That commonly uses at present blocks and seat inner easy trapped fuel after long-time use, and ball is easily blocked, and it is unreliable to seal.
Summary of the invention
For overcome existing block and seat is long-time use after the insecure deficiency of sealing, the utility model provides a kind of and blocks and seat, this block simple with holder structure, sealing is reliable.
The technical solution of the utility model is: a kind of blocking and seat, comprise ball seat, and described ball seat inner hollow, the top of endoporus is taper, ball seat top is provided with block seat, and ball seat is all connected with outside box cupling with block seat; Block seat inside is equipped with stainless steel ball, and stainless steel ball external diameter and middle part, ball seat upper taper hole match, and are less than block seat internal diameter; The described block seat upper inner catch that has been threaded, and on catch, have the through hole of several vertical directions.
Stainless steel ball the utlity model has following beneficial effect: owing to taking such scheme, ball seat top is bellmouth, with bellmouth, is built-in with stainless steel ball, and the diameter of stainless steel ball is less than block seat diameter, so can move up and down in passage.When stainless steel ball upwards leaves ball seat top taper hole, open passage, when stainless steel ball drops on ball seat downwards, closed channel.This blocks simple with holder structure, and its inside is difficult for trapped fuel, and sealing is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-ball seat in figure, 2-stainless steel ball, 3-box cupling, 4-catch, 5-block seat.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of blocking and seat, comprises ball seat 1, described ball seat 1 inner hollow, and the top of endoporus is taper, ball seat 1 top is provided with block seat 5, and ball seat 1 is all connected with outside box cupling 3 with block seat 5; Block seat 5 inside are equipped with stainless steel ball 2, stainless steel ball 2 external diameters and ball seat 1 middle part, upper taper hole match, the diameter that is stainless steel ball 2 is greater than ball seat 5 taper hole paths and is less than the large footpath of taper hole, the diameter of stainless steel ball 2 is less than block seat 5 internal diameters simultaneously, like this, stainless steel ball 2 just can move up and down in passage.The described block seat 5 upper inner catch 4 that has been threaded, and on catch 4, have the through hole of several vertical directions, catch 4 can stop stainless steel ball 2, prevents that it from being dropped out by top.
This block with seat in use, the block seat on top 5 connects oil well pumps, the ball seat 1 connection plug pipe of bottom.When tubing string moves upward oil pumping, stainless steel ball 2 moves up under fluid pressure, and passage is opened, and makes liquid pass through smoothly passage; When tubing string moves downward, stainless steel ball 2 is in Action of Gravity Field falls return of serve seat taper hole, and shutoff letter passage, avoids the downward liquid flow in tubing string.Even if this is blocked, use for a long time with seat, inside is also difficult for trapped fuel, and sealing is reliable.

Claims (1)

1. block and a seat, comprise ball seat (1), it is characterized in that: described ball seat (1) inner hollow, the top of endoporus is taper, ball seat (1) top is provided with block seat (5), and ball seat (1) is all connected with outside box cupling (3) with block seat (5); Block seat (5) inside is equipped with stainless steel ball (2), and stainless steel ball (2) external diameter and middle part, ball seat (1) upper taper hole match, and are less than block seat (5) internal diameter; Described block seat (5) the upper inner catch (4) that has been threaded, and on catch (4), have the through hole of several vertical directions.
CN201320534519.9U 2013-08-30 2013-08-30 Blocking ball and seat assembly Active CN203430480U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320534519.9U CN203430480U (en) 2013-08-30 2013-08-30 Blocking ball and seat assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320534519.9U CN203430480U (en) 2013-08-30 2013-08-30 Blocking ball and seat assembly

Publications (1)

Publication Number Publication Date
CN203430480U true CN203430480U (en) 2014-02-12

Family

ID=50059525

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320534519.9U Active CN203430480U (en) 2013-08-30 2013-08-30 Blocking ball and seat assembly

Country Status (1)

Country Link
CN (1) CN203430480U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285562A (en) * 2015-06-29 2017-01-04 中国石油天然气股份有限公司 A kind of ball seat for separate injection tubing string

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285562A (en) * 2015-06-29 2017-01-04 中国石油天然气股份有限公司 A kind of ball seat for separate injection tubing string
CN106285562B (en) * 2015-06-29 2019-01-18 中国石油天然气股份有限公司 A kind of ball seat for separate injection tubing string

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