CN2560747Y - Well mouth sealing device for pumping unit - Google Patents
Well mouth sealing device for pumping unit Download PDFInfo
- Publication number
- CN2560747Y CN2560747Y CN 02243834 CN02243834U CN2560747Y CN 2560747 Y CN2560747 Y CN 2560747Y CN 02243834 CN02243834 CN 02243834 CN 02243834 U CN02243834 U CN 02243834U CN 2560747 Y CN2560747 Y CN 2560747Y
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- seal
- sealing device
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- sealing
- housing
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Abstract
The utility model belongs to the field of the petroleum exploration device in the oil field and relates to a well head sealing device of an oil pumping machine, which can automatically compensate the wearing of the sealing member and of which the sealing member can be replaced when the oil pumping machine is not stopped. The utility model comprises more than two coupling bodies, two sets of upper and lower sealing devices with the same structures, and well head coupling flanges, which are connected fixedly and universally; a compression spring, an adjusting rod, an intermediate support, a fixing bolt, a nut and a sealing member are arranged with in the upper and lower sealing casings; for the casing end cover, the lower sealing casing is fixedly and universally connected with a secondary sealing body and the upper sealing casing is coupled on the upper oil cup; a pouring orifice is arranged so as to keep the oil-pumping polished rod lubricated, and the built-in end cover structure has dustproof and theft-proof functions and is provided with an automatic blowout preventer, so that the operation is safe and reliable. The utility model can replace a stuffing sealer on the well head of the existing oil pumping machine, and has the advantages of fine sealing performance and easy installation.
Description
Technical field
The utility model belongs to oil exploration equipment field, oil field, relate to a kind of can automatic compensation sealing part wearing and tearing and the operation that need not stop oil pumper be the rod-pumped well mouth sealing device of replaceable seal.
Background technology
Existing can automatic compensation sealing part wearing and tearing and the operation that need not stop oil pumper be the rod-pumped well mouth sealing device of replaceable seal, its structure generally is to be made of by welding and spheroid connection the sealing device and the well head coupling flange of a plurality of union bodies (pipe) with upper and lower two groups of same structures, the housing center of upper and lower sealing dress compresses or adopts the sealing of packing_seal box after adopting 7-9 root rubber seal to cut off the seal box of packing into usually, and be provided with spring, adjusting rod, piston or intermediate support in housing, the housing two ends are provided with external end cap.This constructional device exists following deficiency: because packing and piston are pegged graft for the cylinder plane, fastness and less stable have increased the wearing and tearing between packing and oil-extractor polish-rod, influence sealing; External end cap is dustproof, anti-theft effect is poor; No pouring orifice influences the lubricity of oil-extractor polish-rod, increases frictional resistance, and seal is easy to wear; Nothing sealing or Seal Design are unreasonable in the union body, influence the overall tightness of well mouth sealing device; There is not automatic blowout hookup, poor stability in the work.
Summary of the invention
The purpose of this utility model is to provide a kind of good seal performance, and is safe and reliable to operation, can wear and tear by the automatic compensation sealing part, and need not shut down is the rod-pumped well mouth sealing device of replaceable seal.
The technical solution adopted in the utility model: a kind of rod-pumped well mouth sealing device comprises that sealing device and the well head coupling flange by two above union bodies and upper and lower two groups of same structures constitutes by connecting firmly with Hook's coupling; Be provided with compression spring, pressure regulation bar, intermediate support, set bolt, nut, seal in the upper and lower seal casinghousing; And housing end plug, it is characterized in that the lower seal housing connects firmly or the secondary seal of Hook's coupling, last seal casinghousing connects top and connects lubricating cup.The housing center is provided with cone primary seal circle, and pegging graft with the intermediate support conical surface connects firmly, and intermediate support is provided with an alignment pin, and the housing two ends are provided with built-in dust cap, supporting lid.Be provided with the secondary seal of a taper in the secondary seal.Union body is provided with the pouring orifice of oiling bolt, oiling nut formation.Connect lubricating cup top and be provided with scraper ring.Secondary seal one side is provided with automatic blowout hookup, is provided with guide rod, spring, hollow steel ball in its housing, and secondary seal endoporus shaped upper part is a sphere, matches with hollow steel ball, and housing one end is provided with supporting, gland.
The active force of the utility model by spring guarantees the pressure between primary seal circle and the oil pumping polish rod, continue to be compensated after making sealing part abrasion, and good seal performance, the raising pumping efficiency, need not shut down is replaceable seal; Be provided with pouring orifice, make sucker rod keep lubricated, reducing friction reaches good sealing effectiveness; Built-in end cover structure plays dustproof, antitheft effect; Seal Design is reasonable in each union body, and overall tightness improves; Set up automatic blowout hookup, made safe and reliable to operation.Packing_seal device on the alternative existing oil pumper well head of the utility model, simple installation, economical and practical.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is a well head coupling flange structural representation of the present utility model;
Fig. 3 is the utility model embodiment 2 structural representations.
The specific embodiment
Embodiment 1
Consult shown in Figure 1, a kind of rod-pumped well mouth sealing device, mainly be by dust cap 1, supporting covers 2, seal casinghousing 3, pressure regulation bar 4, fixing spring nut 5, packing ring 6, alignment pin 7, intermediate support 8, compression spring 9, sealing ring 10, top connects lubricating cup 11, primary seal circle 12, location coupling nut 13, coupling bolt 14, oiling bolt 15, oiling nut 16, Hook's coupling gland 17, joint ring 18, top universal coupling shaft 19, bottom Hook's coupling body 20, secondary seal 21, secondary seal 22, movable joint nut 23, seal washer 24, well head coupling flange 25, holding screw 26, sealing mat 27, scraper ring 28 grades constitute, its structure is by top universal coupling shaft 19, bottom Hook's coupling body 20 is with last, seal casinghousing 3 link joints of following two groups of same structures, universal connection gland 17 connects firmly by holding screw 26 and bottom universal attachment body 20, is provided with multiple-sealed ring 18 therebetween; Lower seal housing 3 connects secondary seal 21, is provided with seal washer 24 between secondary seal 21 and the well head adpting flange 25, connects firmly with well head adpting flange 25 by movable joint nut 23, holding screw 26; Last seal casinghousing 3 connects top and connects lubricating cup 11; be provided with scraper ring 28 connecing lubricating cup 11 tops; constitute oil pumper well head integral sealing means thus; in the middle of the sealing device, be provided with a pouring orifice simultaneously; before installing and using, fill with lubrication oil by oiling bolt 15, oiling nut 16, keep the lubricity of oil pumping polish rod, reduce frictional resistance; oil pumping polish rod is played a protective role, improve sealing effectiveness.Because top has been installed connects lubricating cup 11, thereby many pipe protections, connect in the lubricating cup 11 and can deposit some oil, just, can be released to by fuel outlet when being higher than fuel outlet and fixedly connect oil and locate as trapped fuel as long as can play the effects such as lubricated, cooling of sucker rod at the following position of fuel outlet; Because a Hook's coupling axis body is installed between upper and lower seal casinghousing 3, when some tilts when well head, or when polished rod and well head decentraction, available this is regulated, the operate as normal requirement of assurance oil pumping polish rod; Owing to be provided with the secondary seal 22 of a pyramidal structure in the secondary seal 21, under the effect of movable joint nut 23, secondary seal 22 is fitted tightly with oil pumping polish rod, strengthen sealing effectiveness.
Be provided with pressure regulation bar 4, intermediate support 8, compression spring 9 in the upper and lower seal casinghousing 3 of the present utility model, be arranged on its pressure regulation bar 4 that supporting covers 2, on the fixing spring nut 5, pressure regulation bar 4 is provided with compression spring 9, connect firmly with intermediate support 8 by fixing spring nut 5, packing ring 6, intermediate support 8 is provided with sealing ring 10; Two housings 3 centers are provided with cone primary seal circle 12, not only peg graft with intermediate support 8 conical surfaces, and by being arranged on the location coupling nut 13 in primary seal circle 12 cones, coupling bolt 14 connects firmly with intermediate support 8, solid and reliable, improve the stability of oil-extractor polish-rod operation, because of primary seal circle 12 abrasion sizes are certain, therefore, intermediate support 8 is provided with an alignment pin 7, the wear extent of the move distance of alignment pin 7 and primary seal circle 12 is consistent, be convenient in time change primary seal circle 12, play the effect that the protection oil pumping polish rod can not wear and tear mutually with intermediate support 8; Be provided with built-in dust cap 1 at housing 3 two ends, supporting cover 2, all adopts inner opening structure, plays antitheft effect, and covers 2 ends and is provided with sealing mat 27 supporting, and plays good sealing function, prevents that external dust from entering.
Operating principle of the present utility model: the masterpiece that produces when being compressed by compression spring 9 is used on the fixing spring nut 5, by fixing spring nut 5 power is passed to intermediate support 8, because intermediate support 8 is to connect all-in-one-piece by location coupling nut 13, coupling bolt 14 with primary seal circle 12, therefore can make primary seal circle 12 forever and oil pumping polish rod fit tightly, reach good sealing effectiveness; Because the sealing device is two groups up and down, during use the group work of going up, following group is when the replacing upper sealing gasket, starts working, and plays that not shut down be the effect of replaceable sealing ring 10; Can regulate the pressure of compression spring 9 by fixing spring nut 5, the spring pressure of guarantee effect on polished rod is suitable, makes sealing performance reach optimum efficiency.
Consult shown in Figure 2ly, also can connect firmly in the secondary seal 21 of the present utility model by the well head adpting flange 25 of movable joint nut 23, holding screw 26 with the plagiohedral shape.
Embodiment 2
Consult shown in Figure 3, secondary seal 21 1 sides that connect firmly at lower seal housing 3 of the present utility model are provided with automatic blowout hookup, mainly constitute by gland 29, packing ring 30, spring 31, supporting 32, hollow steel ball 33, guide rod 34, housing 35 etc., its housing 35 1 ends and secondary seal 21 connect firmly, be provided with guide rod 34, spring 31 in the housing 35, guide rod 34 ends are hollow steel balls 33, secondary seal 21 endoporus shaped upper parts are sphere, match with hollow steel ball 33, housing 35 other ends are provided with supporting 32, packing ring 30, gland 29; Its effect is when oil pumping polish rod ruptures suddenly, in the secondary seal 21, under the effect of oil-well self pressure hollow steel ball 33 is floated back and secondary seal 21 sphere contact seals under hollow steel ball 33 enters under the active force of spring 31, plays the effect of blowout prevention.
Claims (6)
1, a kind of rod-pumped well mouth sealing device comprises that sealing device and the well head coupling flange by two above union bodies and upper and lower two groups of same structures constitutes by connecting firmly with Hook's coupling; Be provided with compression spring, pressure regulation bar, intermediate support, set bolt, nut, seal in the upper and lower seal casinghousing; And housing end plug, it is characterized in that lower seal housing (3) connects firmly or the secondary seal (21) of Hook's coupling, last seal casinghousing (3) connects top and connects lubricating cup (11).
2, rod-pumped well mouth sealing device according to claim 1, it is characterized in that housing (3) center is provided with cone primary seal circle (12), connect firmly with the grafting of intermediate support (8) conical surface, intermediate support (8) is provided with an alignment pin (7), and housing (3) two ends are provided with built-in dust cap (1), supporting lid (2).
3, rod-pumped well mouth sealing device according to claim 1 is characterized in that being provided with in the secondary seal (21) the secondary seal (22) of a taper.
4, rod-pumped well mouth sealing device according to claim 1 is characterized in that union body is provided with the pouring orifice of oiling bolt (15), oiling nut (16) formation.
5, rod-pumped well mouth sealing device according to claim 1 is characterized in that connecing lubricating cup (11) top and is provided with scraper ring (28).
6, rod-pumped well mouth sealing device according to claim 1, it is characterized in that secondary seal (21) one sides are provided with automatic blowout hookup, be provided with guide rod (34), spring (31), hollow steel ball (33) in its housing (35), secondary seal (21) endoporus shaped upper part is a sphere, match with hollow steel ball (33), housing (35) one ends are provided with supporting (32), gland (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243834 CN2560747Y (en) | 2002-07-24 | 2002-07-24 | Well mouth sealing device for pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243834 CN2560747Y (en) | 2002-07-24 | 2002-07-24 | Well mouth sealing device for pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560747Y true CN2560747Y (en) | 2003-07-16 |
Family
ID=33715973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02243834 Expired - Fee Related CN2560747Y (en) | 2002-07-24 | 2002-07-24 | Well mouth sealing device for pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560747Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209278A (en) * | 2018-10-22 | 2019-01-15 | 青岛新胜石油机械有限公司 | Wellhead sealing device and pumping unit |
-
2002
- 2002-07-24 CN CN 02243834 patent/CN2560747Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209278A (en) * | 2018-10-22 | 2019-01-15 | 青岛新胜石油机械有限公司 | Wellhead sealing device and pumping unit |
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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: 20030716 Termination date: 20090824 |