CN207048720U - A kind of balanced type can the preventing sucker rod spray box with press operation - Google Patents

Abstract

The utility model discloses a balanced blowout prevention box for sucker rods which can be operated under pressure. The inside of the box body is provided with a packing sealing assembly close to the packing box cover, the lower end of the box body is provided with a cavity communicating with the packing sealing assembly, the center line of the upper opening of the packing box cover, the cavity The center line of the center line and the axis of the packing seal assembly are both coincidently set, and the cavity is located directly below the packing seal assembly and symmetrically provided with a right-angle rubber seat for the sucker rod to pass through and hold the sucker rod tightly. There is a control mechanism to control the slippage of the right-angle rubber seat in the cavity, and valve covers are provided at both ends of the cavity to close the cavity; the sucker rod blowout preventer is small in size, which can effectively avoid blowout and kick And so on, and the internal structure is easy to replace and has a long service life.

Description

A balanced sucker rod blowout preventer box that can be operated under pressure

technical field

The utility model relates to oil pumping anti-blowout equipment, in particular to a balanced type sucker rod anti-blowout box which can be operated under pressure.

Background technique

During the mechanical pumping process, the crude oil in the formation will continue to accumulate in the oil pipe with the continuous pumping of the deep well pump. When pumping oil, it can effectively avoid the phenomenon of oil spillage; in the oil field and oil well pumping process in the market, the rubber gate valve and the packing box are usually used together, but the installation height of this assembly is too large, and the rubber gate valve and the packing box set are usually used together. The packing boxes are connected by threads, the leakage points are increased, the sealing is poor, and there will be blowouts and blowouts when the packing is replaced.

Utility model content

The purpose of the utility model is to provide a balanced sucker rod blowout preventer box which can be operated under pressure, which has the advantages of good sealing performance and no blowout or blowout when the packing is replaced.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: A balanced sucker rod anti-blowout box that can be operated under pressure, including a box body, the upper end of the box body is provided with a packing box cover and a control box The box cover handle for opening and closing the packing box cover, the inside of the box body is provided with a packing sealing assembly close to the packing box cover, the lower end of the box body is provided with a cavity communicating with the packing sealing assembly, the The center line of the upper opening of the root box cover, the center line of the cavity, and the axis of the packing seal assembly are all coincidently arranged. The cavity is located directly below the packing seal assembly and is symmetrically provided for the penetration of the oil sucker rod and for the oil pumping. The right-angle rubber seat tightly held by the rod, the control mechanism for controlling the sliding of the right-angle rubber seat is provided in the cavity, and the two ends of the cavity are provided with valve covers to close the cavity.

By adopting the above-mentioned technical scheme, the sucker rod anti-blowout box directly arranges the packing sealing assembly inside and integrates it. At this time, multiple steps and connections with other equipment can be saved, the height and occupied area are reduced, and It can also better ensure the tightness of the sucker rod in the sucker rod blowout prevention box; when it is necessary to replace the internal packing seal assembly, the right-angle rubber seat is always in the position of pumping oil under the action of the control mechanism. In the state where the sucker rod is tightly hugged, the seal at the sucker rod can be further strengthened at this time, and the phenomenon of well kick and blowout can be effectively avoided.

The utility model is further configured as follows: a pair of cylindrical valve cores are symmetrically arranged in the cavity along the axis of the packing sealing assembly, the outer peripheral surface of the cylindrical valve cores conflicts with the inner surface of the box body, and the two The right-angle rubber seats are respectively connected to the cylindrical valve core, and the control mechanism includes a valve stem threaded in the valve cover, and the valve rods are threaded through the valve cover to be connected and fixed with the cylindrical valve core.

By adopting the above technical scheme, when the sucker rod is installed in the sucker rod blowout prevention box, the valve stem is rotated so that it drives the right-angle rubber seat to hold the sucker rod tightly, which can enhance the sealing effect on the sucker rod , the existence of the cylindrical valve core can ensure the sealing effect in the cavity; when it is necessary to replace the packing seal assembly in the sucker rod blowout preventer box, under the action of the right-angle rubber seat, the well kick can be effectively prevented , Blowout phenomenon.

The utility model is further configured as follows: a gap is provided between the bottom of the cylindrical valve core and the lower surface of the box body in the cavity, and the box body is threadedly connected with a plurality of guide bolts acting on the valve body.

By adopting the above technical solution, under the action of the guide bolts, the slight position adjustment of the cylindrical valve core in the cavity can be realized, so that the setting of the cylindrical valve core in the cavity is more compact, the sealing performance is improved, and the The tightness of the right-angle rubber seat to the sucker rod is more firm and reliable.

The utility model is further configured as follows: the two right-angle rubber seats are provided with model arc grooves for the sucker rod to penetrate.

By adopting the above technical solution, under the action of the circular arc groove of the model, the shape of the cylindrical sucker rod can be more fitted, and the sealing performance when the sucker rod is tightly hugged is improved.

In summary, the utility model has the following beneficial effects:

1. The simple structure effectively avoids the phenomena of well kick and blowout when replacing the packing sealing components;

2. Use a reasonable control mechanism to realize the movement and position fixation of the right-angle rubber seat;

3. The packing box is concentrated, and the two functions of the blowout preventer are integrated into one body, and the structure is compact, which reduces the wear of the sucker rod on the packing and prolongs the service life of the packing;

4. The internal structure is simple, easy to replace and easy to operate;

5. The design of the model arc groove on the right-angle rubber seat improves the degree of cooperation with the sucker rod and further ensures the sealing.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the sucker rod blowout preventer;

Fig. 2 is the front view of the right-angle rubber seat;

Figure 3 is a top view of the right-angle rubber seat.

In the figure: 1. Box body; 2. Packing box cover; 21. Box cover handle; 3. Packing sealing component; 4. Cavity; 5. Right-angle rubber seat; 51. Chassis; 52. Working end; 521. Model arc groove; 6, control mechanism; 61, valve stem; 62, handle; 7, valve cover; 8, cylindrical valve core; 81, metal gasket; 9, gap; 10, guide bolt.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment: A balanced sucker rod anti-blowout box that can be operated under pressure, as shown in Figure 1, includes a box body 1, and the left and right ends of the section of the box body 1 are symmetrical to each other along the center line of the box body 1, so that To ensure the overall balance of the sucker rod BOP box; the upper end of the box body 1 is provided with a packing box cover 2 that closes the upper end of the box body 1 and a box cover handle 21 that controls the rotation and opening of the packing box cover 2 .

As shown in Figure 1, a packing seal assembly 3 is embedded in the box body 1 close to the upper end of the box body 1. The packing seal assembly 3 is composed of multiple packings, and the multiple packings are ring-shaped. Closely attached to the inner wall of the box body 1, the sucker rod can pass through the central channel of the packing seal assembly 3. At this time, the inner peripheral surface of the packing seal assembly 3 and the outer peripheral surface of the sucker rod are closely attached to each other, so as to realize Here the sealing of the sucker rod works.

At the same time, as shown in Figure 1, a cavity 4 communicating with the packing seal assembly 3 is provided near the lower position in the box body 1, and valves for closing the cavity 4 are provided at both ends of the cavity 4. Cover 7; the center line of the upper opening of the box body 1, the center line of the cavity 4 and the axis of the packing seal assembly 3 are all coincidently arranged so that the sucker rod is in a straight line when it is arranged in the sucker rod blowout prevention box , will not be distorted or damaged.

As shown in Figure 1, a pair of cylindrical valve cores 8 are arranged symmetrically along the center line of the cavity 4 directly below the packing seal assembly 3 in the cavity 4, and the outer peripheral surfaces of the cylindrical valve cores 8 are all aligned with the box body. The inner wall of 1 is in conflict with each other to realize the tightness in the cavity 4; as shown in Fig. 5 includes an arc-shaped chassis 51 and a working end 52 perpendicular to the chassis 51. The chassis 51 is embedded and installed on the end surface of the cylindrical valve core 8, and is realized on the cylindrical valve core 8 through metal gaskets 81 and bolts. Detachable connection, the working end 52 of the right-angle rubber seat 5 is provided with a model arc groove 521 matching the shape of the sucker rod, so that the sucker rod is between two right-angle rubber seats 5, and the model arc groove 521 is connected to the pumping rod. The oil rods can fit more tightly, improving the sealing performance of the sucker rods here.

At the same time, as shown in Figure 1, a valve stem 61 is threadedly connected to the bonnet 7 at both ends of the cavity 4, and the valve stem 61 is threaded through the bonnet 7 to connect with the cylindrical valve core 8 inside the cavity 4. fixed, and a handle 62 perpendicular to the valve rod 61 is provided at the outer end of the valve rod 61 so that the staff can easily control the rotation of the valve rod 61 .

In this embodiment, a gap 9 is provided between the lower surface of the cylindrical spool 8 and the lower surface of the box body 1 in the cavity 4, and multiple screws are screwed to the bottom of the sucker rod blowout prevention box body 1. A guide bolt 10, the guide bolt 10 threaded through the box body 1 and the gap 9 can act on the cylindrical valve core 8.

Specific implementation: the sucker rod is installed in the sucker rod blowout prevention box, so that it runs through two right-angle rubber seats 5 and the packing seal assembly 3 coaxially, that is, it passes through the sucker rod blowout prevention box and communicates with the oil well. The inner circular surface of the packing seal assembly 3 is closely attached to the outer peripheral surface of the sucker rod to realize the sealing work on the sucker rod, and then the rotation of the valve stem 61 is controlled by the handle 62, and the rotation of the two valve stems 61 is respectively connected with it. The connected cylindrical valve core 8 slides towards each other in the cavity 4, that is, the two right-angle rubber seats 5 slide towards each other in the cavity 4, so as to realize the tight embrace of the sucker rod and ensure the second track of the sucker rod. Afterwards, turn the guide bolt 10, the guide bolt 10 extends into the cavity 4 and penetrates the gap 9 to realize the compression of the cylindrical valve core 8, so as to ensure that the cylindrical valve core 8 and the right-angle rubber seat 5 are in the cavity. 4. The inner position is fixed, which ensures the tightness of the sucker rod.

In this embodiment, the above-mentioned control mechanism 6 can also use the cooperation of the driving motor and the bolt to drive and control the position of the right-angle rubber seat 5 and the cylindrical valve core, or can use driving devices such as air cylinders and hydraulic cylinders for control.

In this embodiment, two sealing measures are provided for the sucker rod, which greatly enhances the sealing performance of the sucker rod anti-blowout box, and when the packing seal assembly 3 needs to be replaced, only the packing The root box cover 2 is opened, and the packing sealing assembly 3 can be taken out. During this process, because the right-angle rubber seat 5 is in the state of tightly holding the sucker rod tightly, thereby effectively avoiding the phenomenon of blowout and well kick. The packing seal assembly 3 can be replaced immediately without any worries, which ensures the continuous operability of the work, improves the efficacy, and saves working time; The two functions of the blowout preventer box and the blowout preventer are integrated, the structure is compact, the occupied volume is small, and the use is convenient; the packing seal assembly 3 can be replaced in time, which prolongs the service life of the sucker rod blowout preventer box and reduces user costs , the economic benefit is significantly improved.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (4)

1. a kind of balanced type can the preventing sucker rod spray box with press operation, including box body (1), the upper end of the box body (1) be provided with disk Root lid (2) and the lid handle (21) of control packing lid (2) opening and closing, it is characterised in that：The box body (1) is internal close Packing lid (2) place is provided with packing assemblies (3), and the lower end of the box body (1) is provided with what is communicated with packing assemblies (3) Cavity (4), the center line of packing lid (2) upper end open, the center line of cavity (4) and packing assemblies (3) Axis overlaps setting, is arranged with the cavity (4) immediately below packing assemblies (3) for sucker rod through simultaneously The right angle rubber base (5) held tightly to sucker rod, the interior controlling organization (6) for being provided with control right angle rubber base (5) sliding of the cavity (4), The both ends of the cavity (4) are equipped with the bonnet (7) for closing cavity (4).

2. a kind of balanced type according to claim 1 can the preventing sucker rod spray box with press operation, it is characterised in that：The sky The axisymmetrical of chamber (4) interior edge packing assemblies (3) is provided with a pair of tubular valve elements (8), the excircle of the tubular valve element (8) Surface and the inner surface of box body (1) contradict, and two right angle rubber bases (5) are connected with tubular valve element (8) respectively, the control machine Structure (6) includes the valve rod (61) being threaded in bonnet (7), and the valve rod (61) screw thread is through bonnet (7) and tubular valve Core (8) is connected.

3. a kind of balanced type according to claim 2 can the preventing sucker rod spray box with press operation, it is characterised in that：The cylinder The bottom of shape valve element (8) and box body (1) are provided with gap (9) between being in the lower surface in cavity (4), spiral shell on the box body (1) Line is connected with multiple guide blots (10) acted on valve body.

4. a kind of balanced type according to claim 1 can the preventing sucker rod spray box with press operation, it is characterised in that：Two institutes State the model arc groove (521) for being equipped with right angle rubber base (5) and running through for sucker rod.