CN201255107Y - Assembly type piston rod structure convenient to replacing drilling pump piston - Google Patents
Assembly type piston rod structure convenient to replacing drilling pump piston Download PDFInfo
- Publication number
- CN201255107Y CN201255107Y CNU2008200296462U CN200820029646U CN201255107Y CN 201255107 Y CN201255107 Y CN 201255107Y CN U2008200296462 U CNU2008200296462 U CN U2008200296462U CN 200820029646 U CN200820029646 U CN 200820029646U CN 201255107 Y CN201255107 Y CN 201255107Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- assembly type
- drilling pump
- rod structure
- 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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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides an assembled piston rod structure for a drilling well pump piston which can be replaced conveniently. The assembled piston rod consists of a connecting rod and a piston rod. Both of the connecting rod and the piston rod are located through a cylindrical face and a contact face and are connected through thread. The working reliability is ensured. When the piston is disassembled, a cylinder liner does not need disassembling, thus saving time and labor. The assembled piston rod is simple and reliable and the piston is replaced quickly.
Description
Technical field
The utility model relates to the piston rod construction of petroleum natural gas exploration with reciprocating drilling pump.
Background technique
Piston is the main easily damaged parts of three cylinder single-acting drilling pumps, and the complexity of changing piston is restricting the utilization efficiency of drilling pump, and effectively reducing the piston replacing time is pursuit of the present utility model.The piston rod of three cylinder single-acting drilling pumps of domestic production manufacturing at present is an overall structure, its be installed on the drilling pump structure as shown in Figure 3.There is following drawback in one-piece piston bar structure shown in Figure 3 when changing piston: be subjected to the restriction of drilling pump stroke, must together carry out dismounting with cylinder sleeve in the mounting or dismounting piston rod.And to pull down cylinder sleeve, and the cylinder sleeve gland that hit with a hammer makes it slowly extrude cylinder sleeve, and operation is wasted time and energy like this, influences the efficient of maintain and replace.This structure must be installed in piston, piston rod in the cylinder sleeve when piston is installed in advance, refills upper cylinder half cover gland, then with the cylinder sleeve lifting device with its integral body fluid end of packing into.
Summary of the invention
The utility model purpose provides a kind of assembly type piston rod construction of being convenient to change wellbore pump piston, changes the demand of piston fast to satisfy drilling pump.
Specifically, a kind of assembly type piston rod of being convenient to change wellbore pump piston is made up of extension bar and piston rod; Extension bar and piston rod adopt between the two cylndrical surface and surface of contact to position and adopt and are threaded.
The utility model compared with prior art, whole dismounting process need not pulled down cylinder sleeve, and is time saving and energy saving, simple and reliable, to reach the purpose of quick replacing piston.
Description of drawings
Fig. 1 installs the back schematic representation for the assembly type piston rod.
Figure number explanation 1----extension bar; The 2----piston rod; The 3---piston; The 4----cylinder sleeve; The 5----cylinder sleeve is pressed.
Fig. 2 is a drilling pump assembly type piston rod construction schematic representation.
Figure number explanation: 6-connecting thread, 7-cylndrical surface, 8---surface of contact.
Fig. 3 installs the back schematic representation for the one-piece piston bar.
Embodiment
Briefly, the utility model is guaranteeing only original one-piece piston bar to be divided into two formation assembly type piston rods under the constant prerequisite of piston 3, cylinder sleeve 4, cylinder sleeve gland 5.The utility model structure is made up of extension bar 1, piston rod 2 as shown in Figure 2.Position by Short Cylinder Surface 7 and surface of contact 8 between extension bar 1 and the piston rod 2, to prevent the generation of piston eccentric wear phenomenon in cylinder sleeve.Adopt screw thread 6 to connect between the two.When the discharge stroke of piston rod, surface of contact transmits stressed, and screw thread is stressed during induction stroke.During the dismounting piston, at first rotate extension bar (1), itself and piston rod (2) are broken away from, then piston rod (2), piston (3) are taken out from cylinder sleeve (4) simultaneously.Otherwise during installation.Whole dismounting process need not pulled down cylinder sleeve, and is time saving and energy saving, simple and reliable, to reach the purpose of quick replacing piston.
Claims (1)
1, a kind of assembly type piston rod construction of being convenient to change wellbore pump piston: it is characterized in that forming by extension bar (1) and piston rod (2); Extension bar (1) and piston rod (2) adopt cylndrical surface (7) and surface of contact (8) to position and adopt screw thread (6) to be connected between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200296462U CN201255107Y (en) | 2008-07-10 | 2008-07-10 | Assembly type piston rod structure convenient to replacing drilling pump piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200296462U CN201255107Y (en) | 2008-07-10 | 2008-07-10 | Assembly type piston rod structure convenient to replacing drilling pump piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201255107Y true CN201255107Y (en) | 2009-06-10 |
Family
ID=40738423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200296462U Expired - Fee Related CN201255107Y (en) | 2008-07-10 | 2008-07-10 | Assembly type piston rod structure convenient to replacing drilling pump piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201255107Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946550A (en) * | 2012-03-30 | 2014-07-23 | 四川宏华石油设备有限公司 | Assembly for mounting cylinder liners in drilling pump |
| CN104723018A (en) * | 2014-12-11 | 2015-06-24 | 南京梅山冶金发展有限公司 | Method for replacing concrete pump piston |
| CN109162888A (en) * | 2018-09-07 | 2019-01-08 | 宝鸡石油机械有限责任公司 | A kind of drilling pump strum |
| CN110953149A (en) * | 2019-12-30 | 2020-04-03 | 济南宝山石油设备有限公司 | Device for quickly disassembling piston rod of slurry pump and method for quickly replacing piston |
-
2008
- 2008-07-10 CN CNU2008200296462U patent/CN201255107Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946550A (en) * | 2012-03-30 | 2014-07-23 | 四川宏华石油设备有限公司 | Assembly for mounting cylinder liners in drilling pump |
| CN104723018A (en) * | 2014-12-11 | 2015-06-24 | 南京梅山冶金发展有限公司 | Method for replacing concrete pump piston |
| CN109162888A (en) * | 2018-09-07 | 2019-01-08 | 宝鸡石油机械有限责任公司 | A kind of drilling pump strum |
| CN109162888B (en) * | 2018-09-07 | 2019-09-24 | 宝鸡石油机械有限责任公司 | A kind of drilling pump strum |
| CN110953149A (en) * | 2019-12-30 | 2020-04-03 | 济南宝山石油设备有限公司 | Device for quickly disassembling piston rod of slurry pump and method for quickly replacing piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20130710 |