CN2779110Y

CN2779110Y - Spray-proof device of oil-well pump

Info

Publication number: CN2779110Y
Application number: CN 200520020030
Authority: CN
Inventors: 汪慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-07
Filing date: 2005-01-07
Publication date: 2006-05-10
Anticipated expiration: 2015-01-07

Abstract

The utility model relates to a spray-proof device of an oil-well pump, which mainly solves the problem that a valve fixed on the existing oil-well pump does not have the spray-proof function. The utility model is characterized in that a sliding bush (6) having an oil channel (7) is arranged in an outer casing (3), the upper end of the sliding bush (6) is connected with a sliding valve (8) and a contacting body (9) positioned in an upper connector, the sliding valve (8) is matched with a valve base (14) of the lower end of the upper connector (1), the lower part of the sliding bush (6) is connected with a fixed base (11), the fixed base (11) is glidingly clamped outside a central tube (10) provided with slide ways (15) through a ball bearing (12), the slide ways (15) are spirally wound at the outer wall of the central tube (10) at intervals in long and short, and a spring (13) is arranged between the fixed base (11) and the central tube (10). The spray-proof device of an oil-well pump not only has the function that the valve is fixed by the oil-well pump, but also can control a switch to prevent the well spray through the knock of an oil-well rod. The utility model has the characteristics of simple structure and reliable use.

Description

The oil well pump blowout hookup

Technical field:

The utility model relates to the accessory on the oil well pump, especially oil well pump blowout hookup in the oil recovery field, oil field.

Background technique:

In the oil recovery process of oil field, because the standing valve valve on the existing oil well pump does not have the effect of blowout prevention, for the higher oil well of field pressure, in rod job, when removing the oil pipe operation, high pressure liquid cognition in the well is ejected into the well site from the down-hole, not only has a strong impact on workman's normal operation, brings many beyond thought potential safety hazards, and cause the environmental pollution in well site, destroy ecotope.

The model utility content:

In order to overcome the deficiency that standing valve valve on the existing oil well pump can not blowout prevention, the utility model provides a kind of oil well pump blowout hookup, this oil well pump blowout hookup can play the effect of oil well pump standing valve valve, can control its switch by the bump of sucker rod again and prevent blowout, have simple in structure, service-strong characteristics.

The technical solution of the utility model is: this oil well pump blowout hookup comprises lower contact, be connected with frame between the last lower contact, lower contact is built-in with valve valve seat and valve valve ball, frame be built-in with the sliding sleeve of oily passage, the sliding sleeve upper end is connected with slide-valve and places the interior shake-up body of upper connection, slide-valve cooperates with the valve seat of upper connection lower end, the sliding sleeve lower end is connected and fixed seat, fixed base is stuck in outside the center tube that has slideway by the ball cunning, slideway is spirally coiled in center tube outer wall and length interval, between fixed base and the center tube spring is arranged.

The above-mentioned slide-valve and the surface of contact of valve seat are conical surface.

The utlity model has following beneficial effect: owing to take such scheme, upper connection is connected with the pump barrel of oil well pump, remove original standing valve, utilizing oil pump plunger piston to promote to touch body during proper functioning moves down, ball enters in the short slideway of center tube outer wall, and sliding sleeve is in lower dead center, and slide-valve separates with the valve seat of upper connection lower end, can normally recover the oil the effect that valve valve seat in lower contact this moment and valve valve ball have played original standing valve; When carrying out underground work, promote to touch body downwards, ball enters in the long slideway of center tube outer wall, moves on the sliding sleeve, under the effect of spring force, slide-valve contacts with valve seat, down-hole crude oil is closed under the upper connection, and when playing lower sucker rod, oil pipe, the highly pressurised liquid in the oil well can not enter in the oil pipe, prevented blowout effectively, simple in structure, use reliable.

Description of drawings:

Accompanying drawing 1 is a structure sectional view of the present utility model;

Accompanying drawing 2 is unfolded drawings of the slideway 15 of center tube 10 outer walls among Fig. 1.

1-upper connection among the figure, the 2-lower contact, the 3-frame, 4-valve valve seat, 5-valve valve ball, 6-sliding sleeve, 7-are crossed oily passage, the 8-slide-valve, 9-touches body, 10-center tube, 11-fixed base, 12-ball, 13-spring, 14-valve seat, 15-slideway.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As Fig. 1 in conjunction with shown in Figure 2, this oil well pump blowout hookup comprises lower contact (1,2), be connected with frame 3 between the last lower contact (1,2), lower contact 2 is built-in with valve valve seat 4 and valve valve ball 5, frame 3 be built-in with the sliding sleeve 6 of oily passage 7, sliding sleeve 6 upper ends are connected with slide-valve 8 and place shake-up body 9 in the upper connection, slide-valve 8 cooperates with the valve seat 14 of upper connection 1 lower end, slide-valve 8 is a conical surface with the surface of contact of valve seat 14, good sealing effect; Sliding sleeve 6 lower ends are connected and fixed seat 11, fixed base 11 is by ball 12 sliding being stuck in outside the center tube 10 that has, slideway 15 is spirally coiled in center tube 10 outer walls and length interval, degrees of freedom was big when ball 12 slided in slideway 15, be difficult for taking place the jam phenomenon, its effect obviously is better than fixing pin, between fixed base 11 and the center tube 10 spring 13 is arranged.

During actual the use, upper connection 1 is connected with the pump barrel of oil well pump, remove original standing valve, utilizing oil pump plunger piston to promote to touch body 9 during proper functioning moves down, ball 12 enters in the short slideway of center tube 10 outer walls, and sliding sleeve 6 is in lower dead center, and slide-valve 8 separates with the valve seat 14 of upper connection 1 lower end, can normally recover the oil the effect that valve valve seat 4 in lower contact this moment 1 and valve valve ball 5 have played original standing valve; When carrying out underground work, promote to touch body 9 downwards, ball 12 enters in the long slideway of center tube 10 outer walls, moves on the sliding sleeve 6, under the effect of spring 13 elastic force, slide-valve 8 contacts with valve seat 14, down-hole crude oil is closed in upper connection 1 time, and when playing lower sucker rod, oil pipe, the highly pressurised liquid in the oil well can not enter in the oil pipe, prevented blowout effectively, simple in structure, use reliable.

Claims

1, a kind of oil well pump blowout hookup, comprise lower contact (1,2), last lower contact (1,2) be connected with frame (3) between, lower contact (2) is built-in with valve valve seat (4) and valve valve ball (5), it is characterized in that: frame (3) be built-in with the sliding sleeve (6) of oily passage (7), sliding sleeve (6) upper end is connected with slide-valve (8) and places the interior shake-up body (9) of upper connection, slide-valve (8) cooperates with the valve seat (14) of upper connection (1) lower end, sliding sleeve (6) lower end is connected and fixed seat (11), fixed base (11) is stuck in outside the center tube (10) that has slideway (15) by ball (12) is sliding, slideway (15) is spirally coiled in center tube (10) outer wall and length interval, between fixed base (11) and the center tube (10) spring (13) is arranged.

2, oil well pump blowout hookup according to claim 1 is characterized in that: slide-valve (8) is a conical surface with the surface of contact of valve seat (14).