CN2585969Y

CN2585969Y - Scraping and blowout preventing box of sucker, polish rod

Info

Publication number: CN2585969Y
Application number: CN 02255540
Authority: CN
Inventors: 惠承龙; 张富生; 迟经伟; 赵贵明
Original assignee: Sinopec Shengli Oilfield Co Gudong Oil Extraction Plant
Current assignee: Sinopec Shengli Oilfield Co Gudong Oil Extraction Plant
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2003-11-12
Anticipated expiration: 2012-11-25

Abstract

The utility model relates to an oil scraping and blowout preventing box for a sucker polished rod. The utility model comprises an oil pipe, an elbow pipe, an inner hexagonal joint, a casing, an upper cover, a baffle ring, a packing, a spring ring, a blowout preventive ball and a handle, wherein, the middle of the casing is an arc-shaped cylinder, the center is provided with a through hole, and the upper part is provided with an upper cover which is connected by screw threads; the upper part and the lower part form a butt welding structure, and the middle of the interior is provided with an annular ball cavity of which the interior is provided with the blowout preventive ball; the upper part of the ball cavity is provided with a central upper hole formed front an upper lug boss, and the diameter of the central upper hole is smaller than the diameter of the blowout preventive ball. An upper hole cavity arranged on the upper part of the upper lug boss is successively provided with the packing and the baffle ring from top to bottom; the interior of a circumferential annular slot of the packing is provided with the spring ring. The lower part of the ball cavity is provided with a central lower hole formed from a lower lug boss, and the diameter of the central lower hole is smaller than the diameter of the blowout preventive ball; the lower part of the lower lug boss is provided with a lower hole cavity provided with inner screw threads. The arc-shaped upper part of the casing is welded with the handle, the casing opposite to the handle is provided with the inner hexagonal joint connected by screw threads, the elbow pipe connected by screw threads, and the oil pipe; the bottom of an overflow hole is slightly lower than the bottom of the upper hole cavity.

Description

Oil pumping polish rod frizing blowout prevention box

One, technical field:

The utility model relates to a kind of oil pumping polish rod frizing blowout prevention box.

Two, background technology:

At present in oil-field oil pumper is produced, though between polished rod and the well head packing_seal is arranged, but because oil is thick, reasons such as well head is inclined to one side, cause and adhere to a small amount of crude oil on the polished rod, the well head that still causes of long duration pollutes, remove to pollute and must clean with gasoline or diesel oil, summer is still easy, if to winter just clean very difficulty, moreover the polished rod blowout prevention of having no progeny is still the problem that exists in the field produces, though similar products are arranged, as " pumpingh well polished rod oil removing preventer ", the patent No.: ZL00268260, its complex structure, packing is short application life, and blowout hookup is a spring, the copper coin structure contacts easy to wear for a long time with polished rod, and increased the frrction load of oil pumper, though the polished rod sealer that has has blowout hookup, need a whole set of replacement cost height, thereby prior art can not address the above problem.

Three, summary of the invention:

The purpose of this utility model designs a kind of oil pumping polish rod frizing blowout prevention box at above-mentioned weak point exactly.

Above-mentioned purpose is realized by following technical proposals: the utility model is by oil pipe, elbow, interior six square joints, housing, loam cake, baffle ring, packing, turn, spray-proof ball, handle is formed, in the middle of its housing is the curved circular cylinder, there is a through hole at the center, top is the loam cake that is threaded, be up and down to welding structure, bosom is annular ball chamber, ball is equipped with spray-proof ball in the chamber, top, ball chamber have that a convex platform forms in hole in the heart, its diameter is less than the spray-proof ball diameter, the last vestibule that is positioned at convex platform top is equipped with packing from bottom to top successively, baffle ring, in the circumferential cannelure of packing turn is housed, hole under the center that boss once forms is arranged at bottom, ball chamber, its diameter is greater than the spray-proof ball diameter, the lower convex platform bottom is female vestibule down, internal thread matches with former polished rod sealer external screw thread and is connected, be welded with one handle on housing arc top, so that firmly compress the lower seal packing, handle opposite housing is equipped with interior six square joints that are threaded and be threaded elbow and oil pipe, the spout hole bottom is a little less than last vestibule bottom, so that the crude oil that packing is scraped in last vestibule flows out.

Baffle ring in the above-mentioned oil pumping polish rod frizing blowout prevention box is two annulus horizontal structures, is connect by three spokes between the inner and outer rings, and annulus, spoke cross section are square, rectangle, also can be circle.

Packing in the above-mentioned oil pumping polish rod frizing blowout prevention box is that four metal packings form relatively, also can be whole rubber packing or other material packing, and saws one 30 °--45 ° of angles circumferentially are turn tension structure in the cannelure.

According to the above-mentioned oil pumping polish rod frizing blowout prevention box of making, the crude oil that adsorbs on the polished rod can be wiped off, avoid well head to pollute, the crude oil loss has been avoided in disconnected bar blowout prevention, prevent the pollution of the environment, economical with materials alleviates the post working strength of workers, improve the rod-pumped well managerial skills, have economic benefit and social benefit well.

Four, description of drawings:

Fig. 1-the utility model master looks the broken section structural representation;

Packing among Fig. 2-Fig. 1 (7) is overlooked the broken section structural representation;

Baffle ring among Fig. 3-Fig. 1 (6) plan structure schematic diagram;

Fig. 4-Fig. 1 the utility model The field schematic diagram.

In the accompanying drawing, 1--oil pipe, 2--elbow, six square joints in the 3--, 4--housing, 5--loam cake 6--baffle ring, 7--packing 8--turn 9--convex platform, 10--spray-proof ball, 11--lower convex platform, the 12--handle, the 13--oil pumping polish rod, 14--oil pumping polish rod frizing blowout prevention box, 15--polished rod sealer, the 16--oil guide pipe, 17--sump oil bucket; The A--spout hole, the last vestibule of B--, hole in the heart among the C--, D--ball chamber, hole under the E--center, vestibule under the F--.

Five, the specific embodiment:

This oil pumping polish rod frizing blowout prevention box (14), by oil pipe (1), elbow (2), interior six square joints (3), housing (4), loam cake (5), baffle ring (6), packing (7), turn (8), spray-proof ball (10), handle (12) is formed, in the middle of its housing (4) is the curved circular cylinder, there is a through hole at the center, top is the loam cake (5) that is threaded, be up and down to welding structure, bosom is annular ball chamber (D), spray-proof ball (10) is housed in the ball chamber (D), top, ball chamber (D) have that a convex platform (9) forms in hole (C) in the heart, its diameter is less than spray-proof ball (10) diameter, the last vestibule (B) that is positioned at convex platform (9) top is equipped with packing (7) from bottom to top successively, baffle ring (6), packing (7) circumferentially is equipped with turn (8) in the cannelure, hole (E) under the center that one lower convex platform (11) forms is arranged at bottom, ball chamber (D), its diameter is greater than spray-proof ball (10) diameter, lower convex platform (11) bottom is female vestibule (F) down, internal thread matches with polished rod sealer (15) external screw thread and is connected, be welded with one handle (12) on housing (4) arc top, so that firmly compress the lower seal packing, handle (12) opposite housing (4) is equipped with interior six square joints (3) that are threaded and elbow that is threaded (2) and oil pipe (1), spout hole (A) bottom is a little less than last vestibule (B) bottom, so that the crude oil that packing (7) is scraped in last vestibule (B) flows out.

Mounting method:

At first, the pressure cap of polished rod sealer (15) is laid down; Secondly, the loam cake (5) of oil pumping polish rod frizing blowout prevention box (14) is dismantled taking-up packing (7), the second, from oil pumping polish rod (13) top oil pumping polish rod frizing blowout prevention box (14) is inserted in, be threaded togather with polished rod sealer (15); The 4th, packing (7) is added in below the baffle ring (6), tighten loam cake (5); The 5th, oil guide pipe (16) is contained on the oil pipe (1), the other end is put into sump oil bucket (17) and is got final product.Notice during installation that spray-proof ball (10) does not drop out.

Claims

1, a kind of oil pumping polish rod frizing blowout prevention box, comprise oil pipe, elbow, interior six square joints, housing, loam cake, baffle ring, packing, turn, spray-proof ball, handle, it is characterized in that: be the curved circular cylinder in the middle of the described housing, there is a through hole at the center, top is the loam cake that is threaded, be up and down to welding structure, bosom is annular ball chamber, ball is equipped with spray-proof ball in the chamber, top, ball chamber have that a convex platform forms in hole in the heart, its diameter is less than the spray-proof ball diameter, the last vestibule that is positioned at convex platform top is equipped with packing from bottom to top successively, baffle ring, in the circumferential cannelure of packing turn is housed, hole under the center that boss once forms is arranged at bottom, ball chamber, and its diameter is greater than the spray-proof ball diameter, the lower convex platform bottom is female vestibule down, be welded with one handle on housing arc top, handle opposite housing is equipped with interior six square joints that are threaded and be threaded elbow and oil pipe, and the spout hole bottom is a little less than last vestibule bottom.

2, oil pumping polish rod frizing blowout prevention box according to claim 1 is characterized in that: described baffle ring is connect by three spokes between the inner and outer rings for two annulus horizontal structures, and annulus, spoke cross section are square, rectangle, also can be circle.

3, oil pumping polish rod frizing blowout prevention box according to claim 1, it is characterized in that: described packing is that four metal packings form relatively, also can be whole rubber packing or other material packing, and saw one 30 °--45 ° of angles circumferentially are turn tension structure in the cannelure.