CN108952608A - The reverse turning bed structure that automatic trigger docking is opened - Google Patents

Abstract

The invention relates to a flap structure that automatically triggers docking and opening, including a flap valve and an outer cylinder. The flap valve includes a valve seat, a valve disc and a spring leaf. The top of the seat has a valve port sealing surface that matches the disc, the outer cylinder side wall is provided with a through hole, and the outer wall of the valve seat is provided with elastic latches that match the through hole, the upper end of the elastic latch is connected with the valve seat, and the lower end of the elastic latch It is operatively resisted at the through hole; one end of the spring piece is slidably connected to the outer wall of the valve disc, and the other end of the spring piece is connected to the outer cylinder. The outer wall of the valve seat is provided with a first shoulder, the first shoulder is located above the elastic latch, the inner wall of the outer cylinder has a third shoulder and a second shoulder adapted to the first shoulder, the third shoulder is in line with the first There are springs between the shoulders. When the lower end of the elastic locking tooth is against the through hole, the first shoulder and the second shoulder are in conflict, and the spring is in a compressed state. The invention can be triggered outside the cylinder to realize automatic docking and opening; meanwhile, the opening is not blocked by pressure.

Description

The flap structure that automatically triggers the docking and opening

technical field

The invention relates to the technical field of coring equipment, in particular to a flap structure that automatically triggers docking and opening.

Background technique

At present, in the field of pressure-holding coring, the upper end of the pressure-holding cylinder is generally sealed by a piston, and the lower end of the pressure-holding cylinder is usually sealed by a ball valve or a flap valve. The structure of the ball valve is relatively complex and occupies a large space, which limits the diameter of the drilled core. The processing technology of the ball valve is high, and when the pressure is high, the liquid in the pressure-holding cylinder will leak from the gap between the ball valve and the core cylinder. , unable to maintain high pressure.

As shown in Figure 1, the existing flap valve structure, wherein, the flap valve includes a valve seat (No. 1) and a disc (No. 2), the seat is installed on the inner wall of the outer cylinder (No. The outer wall of the upper end of the valve seat is flexibly connected, the valve disc sealing surface is provided with a valve disc sealing ring (No. 24), and the top of the valve seat has a valve port sealing surface (No. When located in the valve seat, due to the force of the core barrel, the valve clack is opened 90 degrees and hidden between the core barrel and the outer cylinder (No. 4). In the coring stage, after the core barrel is raised to a certain height, the valve clack is automatically closed under the action of the shrapnel (No. 3). When the rock core is pushed into the experimental chamber, the valve clack in the existing flap valve structure can only be opened upwards, and the valve clack is blocked by pressure when it is opened, making it difficult to open and inconvenient to operate.

Contents of the invention

The invention aims to provide a flap structure that automatically triggers docking and opening, and can be operated outside the cylinder when docking with the experimental cabin to realize automatic opening.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

The flap structure that automatically triggers the docking and opening includes a flap valve and an outer cylinder. The flap valve includes a valve seat, a valve disc and a spring leaf. The valve seat is set in the outer cylinder. The sealing surface of the valve port matched with the valve clack, the side wall of the outer cylinder is provided with at least one through hole, the outer wall of the valve seat is provided with elastic latches adapted to the through hole, the upper end of the elastic latch is connected with the valve seat, and the lower end of the elastic latch can be It is operatively resisted at the through hole; one end of the spring piece is slidably connected to the outer wall of the valve clack, and the other end of the spring piece is connected to the outer cylinder.

Further, the outer wall of the valve seat is provided with a first shoulder, and the inner wall of the outer cylinder is provided with a second shoulder, the first shoulder is located above the elastic locking teeth, and a spring is arranged between the second shoulder and the first shoulder, when the elastic locking When the lower end of the tooth resists the through hole, the spring is in a compressed state.

Further, the inner wall of the outer cylinder has a third shoulder adapted to the first shoulder, and the second shoulder is located above the third shoulder. When the lower end of the elastic latch is against the through hole, the first shoulder and the third The shoulders collide.

Further, at least two through holes are provided at equal intervals in the circumferential direction of the outer cylinder.

Preferably, three through holes are arranged at equal intervals in the circumferential direction of the outer cylinder.

Further preferably, a ring of elastic latches is provided on the valve seat.

Wherein, a sealing ring is arranged between the valve seat and the outer cylinder.

Among them, the sealing ring is installed on the valve seat.

Wherein, a chute is provided on the outer surface of the valve disc, and the other end of the spring piece is installed in the chute.

Further, the spring piece includes a rotating shaft, a slider and an elastic shrapnel, one end of the shrapnel is connected to the slider, the other end of the shrapnel is connected to the rotating shaft, the rotating shaft is installed on the outer cylinder, and the slider is installed in the chute.

Compared with the prior art, the present invention has the following beneficial effects:

The invention is simple in structure and ingenious in design, and can be triggered outside the cylinder to realize automatic docking and opening, and the core can be pushed into the test chamber from the core cylinder; at the same time, the valve clack is opened downward when the docking is opened, and the downward opening is not subject to pressure Blocking is thus easier.

Description of drawings

Fig. 1 is the structural representation of prior art;

Fig. 2 is a schematic structural view of the present invention when the disc is opened upwards;

Fig. 3 is a structural representation of the present invention when the disc is closed;

Fig. 4 is a schematic structural view of the present invention when the disc is opened downward;

Figure 5 is a longitudinal view of the disc;

Figure 6 is a lateral view of the disc;

Fig. 7 is a schematic structural view of the elastic snap ring;

In the figure: 1-valve seat, 2-valve disc, 3-spring leaf, 4-outer cylinder, 5-spring, 6-sealing ring, 7-rock core cylinder, 11-valve port sealing surface, 12-elastic latch , 21-chute, 24-disc sealing ring, 31-rotating shaft, 32-shrapnel, 33-slider, 41-through hole, 81-first shoulder, 82-second shoulder, 83-third platform shoulder.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 2, 3, and 4, the flap structure that automatically triggers the docking and opening disclosed by the present invention includes a flap valve and an outer cylinder 4. The flap valve includes a valve seat 1, a valve flap 2 and a spring leaf 3, and the valve seat 1 is set in the outer cylinder 4, the valve disc 2 is hinged to the upper end of the valve seat 1, the top of the valve seat 1 has a valve port sealing surface 11 matching the valve disc 2, and the side wall of the outer cylinder 4 is provided with at least one through hole 41, the through hole The number of 41 can be set as required, for example, two, three or more. In this embodiment, the outer cylinder 4 is provided with three through holes 41 at equal intervals in the circumferential direction. The outer wall of the valve seat 1 is provided with an elastic locking tooth 12 adapted to the through hole 41. The upper end of the elastic locking tooth 12 is connected to the valve seat 1. The lower end of the elastic locking tooth 12 is a free end, and the free end is operatively resisted at the through hole 41. .

The outer wall of the valve seat 1 is provided with a first shoulder 81, the first shoulder 81 is located above the elastic locking teeth 12, the inner wall of the outer cylinder 4 has a second shoulder 82, and there is a gap between the second shoulder 82 and the first shoulder 81. spring 5. The upper end of the spring 5 is connected to the second shoulder 82 , and the lower end of the spring 5 is connected to the first shoulder 81 . The spring 5 is a helical spring, and the helical spring is outside the valve seat 1. When the lower end of the elastic locking tooth 12 abuts against the through hole 41, the spring 5 is in a compressed state.

In another embodiment, the inner wall of the outer cylinder 4 has a third shoulder 83 adapted to the first shoulder 81, and the second shoulder 82 is located above the third shoulder 83. When the lower end of the elastic locking tooth 12 resists the through hole At position 41, the first shoulder 81 is in conflict with the third shoulder 83 to limit the upward movement of the valve seat 1 .

One end of the spring piece 3 is slidingly connected to the outer wall of the valve flap 2 , and the other end of the spring piece 3 is connected to the outer cylinder 4 . As shown in Figures 5 and 6, a chute 21 is provided on the outer surface of the valve disc 2, and the other end of the spring leaf 3 is installed in the chute 21. The spring sheet 3 includes a rotating shaft 31, a slider 33 and an elastic shrapnel 32. The shrapnel 32 is a curved steel sheet. One end of the shrapnel 32 is connected to the slider 33, and the other end of the shrapnel 32 is connected to the rotating shaft 31. The rotating shaft 31 is installed on the outer cylinder 4. Slide block 33 is contained in the chute 21. As shown in Figures 2, 3, and 4, the elastic piece 32 is always connected with the outer cylinder 4 and the valve clack 2 when it is straightened or bent, so that the elastic piece 32 acts as a restraint when the valve clack 2 is opened.

In another embodiment, a ring of elastic locking teeth 12 is provided on the valve seat 1 . As shown in FIG. 7 , several elastic snap teeth 12 are provided on the elastic snap ring, and the elastic snap ring can be installed in the annular groove on the outer wall of the valve seat 1 .

A plurality of sealing rings 6 are arranged between the valve seat 1 and the outer cylinder 4 , and the sealing rings 6 are installed on the valve seat 1 for realizing the sealing between the valve seat 1 and the outer cylinder 4 .

As shown in Figures 2 and 3, when the valve disc 2 is opened or closed upwards, the elastic latch 12 is at the through hole 41, and the elastic latch 12 expands outward through the through hole 41 under the action of its own elasticity to resist against the outer cylinder 4. Up, so that the valve seat 1 cannot move down. At this time, because the first shoulder 81 is in conflict with the third shoulder 83, the valve seat 1 cannot move up, and the sealing position of the valve seat is locked.

As shown in FIG. 3 , when the sealing is triggered, the shrapnel 32 bends, pushing the valve clack 2 to turn down, and achieve sealing cooperation with the valve seat 1 . As shown in Figure 4, during the docking operation, the elastic locking tooth 12 is reset from the through hole 41 to unlock, and under the push of the spring 5, the valve seat 1 moves down and the end connected to the valve disc 2 moves down. The other end of the valve clack 2 is restrained by the shrapnel 32, so that the valve clack 2 moves down and reverses. When the valve clack 2 is turned to a vertical position, the sealed butt joint is realized.

During the docking operation, it is necessary to connect the fidelity cabin with the experimental cabin first, then adjust the pressure in the test cabin to be equal to the fidelity cabin, trigger the elastic locking teeth outside the cylinder, realize the automatic opening of the flap valve, and then remove the core from the core The cylinder is pushed into the test chamber; at the same time, when the docking is opened, the valve clack opens downward, and the downward opening is not blocked by the pressure and the trigger inner cylinder, so it is easier.

Certainly, the present invention also can have other multiple implementation modes, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. The flap structure that automatically triggers the docking and opening includes the flap valve and the outer cylinder (4). The flap valve includes the valve seat (1), the valve disc (2) and the spring leaf (3). Inside the outer cylinder (4), the valve disc (2) is hinged to the upper end of the valve seat (1), and the top of the valve seat (1) has a valve port sealing surface (11) matching the valve disc (2), which is characterized in that: the outer The side wall of the cylinder (4) is provided with at least one through hole (41), and the outer wall of the valve seat (1) is provided with an elastic latch (12) adapted to the through hole (41), and the upper end of the elastic latch (12) is connected to the valve seat (1) connection, the lower end of the elastic latch (12) is operatively resisted at the through hole (41); one end of the spring piece (3) is slidingly connected with the outer side wall of the valve disc (2), and the other end of the spring piece (3) Connect with outer cylinder (4). 2. The flap structure for automatically triggering docking and opening according to claim, characterized in that: the outer wall of the valve seat (1) is provided with a first shoulder (81), and the inner wall of the outer cylinder (4) is provided with a second shoulder (82) ), the first shoulder (81) is located above the elastic latch (12), and a spring (5) is arranged between the second shoulder (82) and the first shoulder (81). When the lower end of the elastic latch (12) When resisting at the through hole (41), the spring (5) is in a compressed state. 3. The flap structure for automatically triggering docking and opening according to claim 2, characterized in that: the inner wall of the outer cylinder (4) has a third shoulder (83) adapted to the first shoulder (81), and the second The shoulder (82) is located above the third shoulder (83), and when the lower end of the elastic latch (12) resists the through hole (41), the first shoulder (81) is in conflict with the third shoulder (83) . 4. The flap structure for automatically triggering docking and opening according to claim 1, characterized in that: the outer cylinder (4) is provided with at least two through holes (41) at equal intervals in the circumferential direction. 5. The flap structure for automatically triggering docking and opening according to claim 4, characterized in that: the outer cylinder (4) is provided with three through holes (41) at equal intervals in the circumferential direction. 6. The flap structure for automatically triggering docking and opening according to claim 1, 4 or 5, characterized in that a ring of elastic locking teeth (12) is provided on the valve seat (1). 7. The flap structure for automatically triggering docking and opening according to claim 1, characterized in that a sealing ring (6) is provided between the valve seat (1) and the outer cylinder (4). 8. The flap structure for automatically triggering docking and opening according to claim 7, characterized in that the sealing ring (6) is installed on the valve seat (1). 9. The flap structure for automatically triggering docking and opening according to claim 1, characterized in that: the outer surface of the valve disc (2) is provided with a chute (21), and the other end of the spring piece (3) is installed in the chute (21). 10. The flap structure for automatically triggering docking and opening according to claim 9, characterized in that: the spring piece (3) includes a rotating shaft (31), a slider (33) and an elastic shrapnel (32), the shrapnel (32 ) one end is connected with slide block (33), and the shrapnel (32) other end is connected with rotating shaft (31), and rotating shaft (31) is installed on the outer cylinder (4), and slide block (33) is contained in the chute (21).