CN102454597A - Hydraulic cylinder used for drill pump - Google Patents
Hydraulic cylinder used for drill pump Download PDFInfo
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- CN102454597A CN102454597A CN2010105238272A CN201010523827A CN102454597A CN 102454597 A CN102454597 A CN 102454597A CN 2010105238272 A CN2010105238272 A CN 2010105238272A CN 201010523827 A CN201010523827 A CN 201010523827A CN 102454597 A CN102454597 A CN 102454597A
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- suction
- hydraulic cylinder
- valve pocket
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Abstract
The invention discloses a hydraulic cylinder used for a drill pump. The hydraulic cylinder comprises a suction hydraulic cylinder (1), a discharge hydraulic cylinder (2) and a suction line (3), wherein the inhalation hydraulic cylinder (1) is connected to the discharge hydraulic cylinder (2), and the suction hydraulic cylinder (1) is provided with a suction valve cavity (1a); the lower end of the suction valve cavity (1a) is communicated with the suction line (3); the hydraulic cylinder is characterized in that the discharge hydraulic cylinder (2) is an integrated structure, and the discharge hydraulic cylinder (2) is provided with at least one discharge valve cavity (2a); and each discharge valve cavity (2a) is correspondingly provided with the suction hydraulic cylinder (1), the lower end of the discharge valve cavity (2a) is communicated with the corresponding suction valve cavity (1a) through a connecting channel (6). The hydraulic cylinder provided by the invention has the advantages of small volume, light weight, simple and compact structure, convenience in installation and convenience, and high operational reliability. Meanwhile, the revealing problem generated by the connecting part of the discharge hydraulic cylinder and a discharge line is solved and the operational reliability of the drill pump is improved.
Description
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Technical field
The invention belongs to petroleum and natural gas drilling equipment field, relate to a kind of fluid cylinder that is used for drilling pump concretely.
Background technique
Fluid cylinder is the main pressure-containing member of drilling pump, and the quality of fluid cylinder has directly determined the behaviour in service and the life-span of drilling pump.
Existing drilling pump fluid cylinder mainly contains two kinds of structural types.First kind; Suck fluid cylinder 29 and discharge fluid cylinder 27 composition " L " types (like Fig. 4), three or five are discharged fluid cylinder is split-type structural, and each is independently discharged one of the corresponding connection of fluid cylinder and sucks fluid cylinder; For guaranteeing that itself wall thickness of each intensity of discharging fluid cylinder just need reach certain standard; Also have certain assemblage gap between the fluid cylinder and discharge in twos, must cause the increasing of overall volume, quality like this, independently discharging fluid cylinder simultaneously needs each is fixedly mounted; The installing/dismounting workload is big, and the maintaining time is long.
In addition; The discharge mode that split type discharge fluid cylinder usually adopts is: discharge valve pocket through being communicated with respectively with between the independent discharge conduit 23 discharging perforate 25 on the fluid cylinder 27; Seal with seal ring 24 between discharge conduit 23 and the discharge fluid cylinder 27, be connected fastening with nut 22 with stud 21; Second kind, suck valve pocket and discharge " I " type drilling pump fluid cylinder (like Fig. 5) that valve pocket is formed, three or five fluid cylinders are split-type structural, seal with seal ring 32 between discharge conduit 33 and the fluid cylinder 31, are connected fastening with nut with stud 34.Mainly there is following defective in these two kinds of structures: the one, and discharge between fluid cylinder and the independent discharge conduit and possibly exist high-pressure slurry to reveal in sealing part, reduced the reliability of work, the operation maintenance workload is big, the user cost height; The 2nd, in order not interfere with frame; Discharge conduit 23 forces discharge fluid cylinder 27 highly to increase (like Fig. 4); Perhaps independent discharge conduit 33 makes entire length increase (like Fig. 5); Volume and weight increases, and is not easy to quick movement, is difficult to adapt to offshore drilling platform has specific (special) requirements to weight use occasion.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, compact, functional reliability is good and mud is discharged the high fluid cylinder that is used for drilling pump of efficient.
Technological scheme of the present invention is following:
Comprise and suck fluid cylinder, discharge fluid cylinder and suction line; Said suction fluid cylinder is connected on the said discharge fluid cylinder, and said suction fluid cylinder has the suction valve pocket, and said suction valve pocket lower end is communicated with said suction line; The said discharge fluid cylinder structure that is formed in one; On said discharge fluid cylinder, be furnished with at least one and discharge valve pocket, each said discharge valve pocket correspondence is provided with the suction fluid cylinder, and the lower end of said discharge valve pocket is communicated with corresponding said suction valve pocket through connecting passage (6).
Adopt the said structure key to be the discharge fluid cylinder has been made integral type; Can effectively eliminate the spacing between split type like this; Arrange at least one discharge valve pocket as required at all-in-one-piece released liquor cylinder interior, discharging valve pocket need be communicated with the suction valve pocket, and the casing wall between the adjacent discharge valve pocket arrives the resistance to compression requirement that certain thickness just adapts to left and right sides discharge valve pocket simultaneously; Thereby further shorten the valve pocket spacing; Reach weight reduction, reduce the purpose of volume, also can be convenient to whole Transporting and lifting in the assembly process, improved installation time and efficient.
Be provided with suction valve in the said suction valve pocket, be provided with expulsion valve in the said discharge valve pocket.
Said released liquor cylinder interior has discharge conduit, and said discharge conduit is communicated with the said valve pocket of respectively discharging.
Adopt the design of the built-in discharge conduit of this kind, 1, saved independently discharge conduit, the structure mentioned in the background technique and more simplify; 2, independently discharge conduit owing to be external; Need discharge valve pocket at each and open connecting passage as background is said so; And be provided with and connect and the sealing dependency structure is communicated with discharge conduit, will cause the problem of existence as stated, and this structure will be discharged at released liquor cylinder interior open walk directly and will be communicated with between the valve pocket; Arrived each has been discharged the purpose of the mud of valve pocket through the discharge conduit discharge; Save dependency structures such as independent discharge conduit, reduced overall volume and quality has been practiced thrift cost, the problem of having avoided the joint seal failure to be brought.
Be furnished with 5 on the said discharge fluid cylinder and discharge valve pocket, each is discharged the valve pocket correspondence and is provided with independently said suction fluid cylinder.
All-in-one-piece discharge fluid cylinder and the built-in discharge conduit that is complementary with it are particularly useful for 5 cylinder drilling pumps, the DeGrain that the cylinder number is little, and can there be certain difficulty in the integral body processing for discharging fluid cylinder that the cylinder number is many again.
Said discharge fluid cylinder is the one forging molding.
Beneficial effect: volume of the present invention is little, in light weight, simple in structure, compact, easy installation and removal, functional reliability high, easy to maintenance.Also eliminate simultaneously leakage problem, the easily damaged parts loss problem of discharging fluid cylinder and the generation of discharge conduit point of attachment, improved the functional reliability of drilling pump.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 structural representation of the present invention;
Fig. 2 is the complete layout of the present invention in drilling pump;
Fig. 3 is for discharging the sectional view of fluid cylinder;
Fig. 4 is a kind of schematic representation of structure wherein in the background technique;
Fig. 5 is the schematic representation of another kind of structure wherein in the background technique.
Embodiment
Like Fig. 1,2, shown in 3: a kind of fluid cylinder that is used for drilling pump; Comprise and suck fluid cylinder 1, discharge fluid cylinder 2 and suction line 3; Said suction fluid cylinder 1 is connected on the said discharge fluid cylinder 2, and said suction fluid cylinder 1 has the valve pocket of suction 1a, is provided with suction valve 4 in the said suction valve pocket 1a; Said suction valve pocket 1a lower end is communicated with said suction line 3; Said discharge fluid cylinder 2 structure that is formed in one is furnished with at least one and discharges valve pocket 2a on said discharge fluid cylinder 2, each said discharge valve pocket 2a correspondence is provided with and sucks fluid cylinder 1; The lower end of said discharge valve pocket 2a is communicated with corresponding said suction valve pocket 1a through connecting passage 6, is provided with expulsion valve 7 in the said discharge valve pocket 2a.
Said discharge fluid cylinder 2 inside have discharge conduit 2b, and said discharge conduit 2b is communicated with the said valve pocket 2a that respectively discharges.
Be furnished with 5 on the said discharge fluid cylinder 2 and discharge valve pocket 2a, each is discharged valve pocket 2a correspondence and is provided with independently said suction fluid cylinder 1.
Said discharge fluid cylinder 2 is the one forging molding.
Concretely: discharge fluid cylinder 2 through the one forging molding; The middle part forms at least one on demand and discharges valve pocket; Discharge valve pocket and be used to install expulsion valve, discharge the valve pocket lower end and be communicated with the suction valve pocket, and each suction valve pocket all is communicated with suction line through connecting passage is set; At first mud is got into connecting passage from suction line through sucking fluid cylinder through the power end piston crank mechanism during work; This moment suction valve open, expulsion valve cuts out, the mud that will suck connecting passage then extrudes from expulsion valve, at this moment expulsion valve open, suction valve closure; The mud of entering discharge valve pocket is then discharged through built-in discharge conduit, and the discharge tube terminal connects discharge five-way or six and leads to.Inhaling and arranging is the to-and-fro motion realization by piston crank mechanism.
Usually the axis of discharge conduit and coplane vertical each other with the axis of discharging valve pocket perhaps formed the space different surface beeline;
Auger shell pit on said discharge fluid cylinder two ends is used for connecting discharge five-way or six logical and emergency valve seats.
In the installation process of expulsion valve, pack into earlier and discharge valve seat 11, install again and discharge valve body 12 and expulsion valve spring 13, the expulsion valve gland is installed at last; In the installation process of suction valve, will suck valve seat 110, suction valve valve body 19 and inhalation valve spring 18 equally successively and be installed in the suction fluid cylinder, the suction valve gland is installed at last.Expulsion valve in above-mentioned discharge fluid cylinder 15 and the suction fluid cylinder 16 is opposite with the unloading process and the installation process of suction valve.
Drilling mud overcomes inhalation valve spring 18 elastic force and pushes suction valve valve body 19 entering suction valve pockets open under suction function; Then, under the thrust of piston rod, drilling mud overcomes expulsion valve spring 13 elastic force and pushes 12 entering of expulsion valve valve body open and discharge valve pocket, then gets into discharge conduit.
Claims (5)
1. fluid cylinder that is used for drilling pump; Comprise and suck fluid cylinder (1), discharge fluid cylinder (2) and suction line (3); Said suction fluid cylinder (1) is connected on the said discharge fluid cylinder (2); Said suction fluid cylinder (1) has suction valve pocket (1a); Said suction valve pocket (1a) lower end is communicated with said suction line (3), it is characterized in that: said discharge fluid cylinder (2) structure that is formed in one is furnished with at least one and discharges valve pocket (2a) on said discharge fluid cylinder (2); Each said discharge valve pocket (2a) correspondence is provided with and sucks fluid cylinder (1), and the lower end of said discharge valve pocket (2a) is communicated with corresponding said suction valve pocket (1a) through connecting passage (6).
2. a kind of fluid cylinder that is used for drilling pump according to claim 1 is characterized in that: be provided with suction valve (4) in the said suction valve pocket (1a), be provided with expulsion valve (7) in the said discharge valve pocket (2a).
3. a kind of fluid cylinder that is used for drilling pump according to claim 1 is characterized in that: said discharge fluid cylinder (2) inside has discharge conduit (2b), and said discharge conduit (2b) is communicated with the said valve pocket (2a) of respectively discharging.
4. according to claim 1,2 or 3 described a kind of fluid cylinders that are used for drilling pump, it is characterized in that: be furnished with 5 on the said discharge fluid cylinder (2) and discharge valve pocket (2a), each is discharged valve pocket (2a) correspondence and is provided with independently said suction fluid cylinder (1).
5. according to claim 1 or 2 or 3 described a kind of fluid cylinders that are used for drilling pump, it is characterized in that: said discharge fluid cylinder (2) is the one forging molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105238272A CN102454597A (en) | 2010-10-29 | 2010-10-29 | Hydraulic cylinder used for drill pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105238272A CN102454597A (en) | 2010-10-29 | 2010-10-29 | Hydraulic cylinder used for drill pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454597A true CN102454597A (en) | 2012-05-16 |
Family
ID=46038139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105238272A Pending CN102454597A (en) | 2010-10-29 | 2010-10-29 | Hydraulic cylinder used for drill pump |
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| Country | Link |
|---|---|
| CN (1) | CN102454597A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500267A (en) * | 1981-10-08 | 1985-02-19 | Birdwell J C | Mud pump |
| CN2267339Y (en) * | 1996-11-19 | 1997-11-12 | 大港油田集团中成机械制造有限公司往复泵制造厂 | integrated sectional reciprocating pump head body with its hydraulic position on its alternation cavity having no intersecting line |
| CN2433411Y (en) * | 2000-07-14 | 2001-06-06 | 张安东 | Crank connecting rod type plunger mud pump |
| CN2612816Y (en) * | 2003-03-30 | 2004-04-21 | 泰安市水利机械厂 | High-pressure plunger slurry pump |
| CN2648100Y (en) * | 2003-09-24 | 2004-10-13 | 四机赛瓦石油钻采设备有限公司 | Oil well operation plunger pump |
| CN2761929Y (en) * | 2005-04-06 | 2006-03-01 | 常德信诚液压有限公司 | Integral multipass reversal valve |
| CN201236785Y (en) * | 2008-08-02 | 2009-05-13 | 宝鸡石油机械有限责任公司 | Inverse L-shaped fluid end for high-pressure reciprocating pump |
| KR101153624B1 (en) * | 2010-02-18 | 2012-06-18 | 김영덕 | Plunger Pump Of Integral Valve |
| CN202493423U (en) * | 2012-03-30 | 2012-10-17 | 四川宏华石油设备有限公司 | Hydraulic cylinder structure for use in drilling pump |
-
2010
- 2010-10-29 CN CN2010105238272A patent/CN102454597A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500267A (en) * | 1981-10-08 | 1985-02-19 | Birdwell J C | Mud pump |
| CN2267339Y (en) * | 1996-11-19 | 1997-11-12 | 大港油田集团中成机械制造有限公司往复泵制造厂 | integrated sectional reciprocating pump head body with its hydraulic position on its alternation cavity having no intersecting line |
| CN2433411Y (en) * | 2000-07-14 | 2001-06-06 | 张安东 | Crank connecting rod type plunger mud pump |
| CN2612816Y (en) * | 2003-03-30 | 2004-04-21 | 泰安市水利机械厂 | High-pressure plunger slurry pump |
| CN2648100Y (en) * | 2003-09-24 | 2004-10-13 | 四机赛瓦石油钻采设备有限公司 | Oil well operation plunger pump |
| CN2761929Y (en) * | 2005-04-06 | 2006-03-01 | 常德信诚液压有限公司 | Integral multipass reversal valve |
| CN201236785Y (en) * | 2008-08-02 | 2009-05-13 | 宝鸡石油机械有限责任公司 | Inverse L-shaped fluid end for high-pressure reciprocating pump |
| KR101153624B1 (en) * | 2010-02-18 | 2012-06-18 | 김영덕 | Plunger Pump Of Integral Valve |
| CN202493423U (en) * | 2012-03-30 | 2012-10-17 | 四川宏华石油设备有限公司 | Hydraulic cylinder structure for use in drilling pump |
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Application publication date: 20120516 |