CN214471738U - Rotation type experiment platform and flap valve closure capability test device - Google Patents

Abstract

The utility model relates to a rotary experimental platform and a flap valve closing performance testing device, which comprises a platform, wherein the platform comprises a first base, a second base, a first rotary driving mechanism and a second rotary driving mechanism; the first rotation driving mechanism is connected with the first base and used for driving the first base and the second base to rotate in a first direction; the second base is rotatably connected with the first base, and the second rotary driving mechanism is connected with the second base and used for driving the second base to rotate in a second direction relative to the first base; the second direction is perpendicular to the first direction. The inclination of the platform in the utility model can be adjusted, and the closing condition of the flap valve in different drilling directions can be tested; the second base can be rotatory for first base for valve clack disk seat is whole around disk seat axial rotation, under first base and second base combined action, can realize the valve clack at different inclination and different locating position's experiment.

Description

Rotation type experiment platform and flap valve closure capability test device

Technical Field

The utility model relates to a pressurize coring experiment technical field especially relates to a rotation type experiment platform and flap valve closure capability test device.

Background

The characteristics of deep rock such as physical mechanics, chemical biology and the like are closely related to the in-situ environmental conditions, the in-situ environmental loss in the coring process can cause the distortion and the irreversible change of the physicochemical property and the mechanical property of the rock core, and the key of the attack is how to obtain the in-situ rock core under the deep environmental conditions and carry out real-time loading test and analysis under the in-situ fidelity state.

In the existing in-situ fidelity coring device, a core is stored in a fidelity cabin after the core is drilled by a drilling tool, and then a sample is subjected to pressure maintaining and sealing by a fidelity cabin pressure maintaining control device.

The fidelity cabin pressure maintaining control device comprises a pressure maintaining valve, and the pressure maintaining valve comprises a ball valve, a flap valve and the like. When the core barrel is lifted to a certain height, the flap valve can be automatically closed. At present, the closing of the flap valve is mainly triggered by elasticity. The flap valve triggered by elasticity can only be applied when drilling vertically, and has the problems of sealing failure caused by the rollover of the valve clack and the like.

Patent document CN110847856A discloses a magnetically triggered pressure-maintaining coring apparatus flap valve structure, in which a magnetic member is disposed on a valve seat of the pressure-maintaining coring apparatus flap valve structure, and a magnetic material is disposed on a valve flap. Theoretically, the valve clack can be magnetically attracted by the valve seat under the action of no external force, and then automatic closing is realized. However, the magnetic flap valve is only in a theoretical stage, and the pressure maintaining performance of the magnetic flap valve needs to be verified and improved.

In actual exploration work, the conditions of vertical drilling, horizontal drilling, inclined drilling and the like exist, the closing condition of the magnetic flap valve at a specific angle is tested, and the verification and the improvement of the pressure maintaining performance of the fidelity cabin are indispensable. However, the existing experiment platform can only carry out experiments at one fixed position.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technical problem and provide a rotation type experiment platform and flap valve closure capability test device.

The utility model discloses a following technical scheme realizes:

a rotary experiment platform comprises a platform, wherein the platform comprises a first base, a second base, a first rotary driving mechanism and a second rotary driving mechanism;

the first rotation driving mechanism is connected with the first base and used for driving the first base and the second base to rotate in a first direction;

the second base is rotatably connected with the first base, and the second rotary driving mechanism is connected with the second base and used for driving the second base to rotate in a second direction relative to the first base;

the second direction is perpendicular to the first direction.

Furthermore, two sides of the first base are connected with rotating shafts, and the rotating shafts are supported on the supporting seat through bearings and bearing seats; the first rotary drive mechanism is connected to one of the rotary shafts.

Preferably, the first rotary drive mechanism is a manual mechanism.

Furthermore, the first rotary driving mechanism comprises a first hand wheel and a first transmission mechanism, and the first transmission mechanism converts the rotary motion of the first hand wheel into the rotary motion of the rotary shaft and the first base;

the rotation axis is perpendicular to the axis of the first handwheel.

Preferably, the second rotary drive mechanism comprises a motor.

Furthermore, a round hole matched with the valve seat is formed in the second base, and the axis of the round hole is coaxial with the rotation center of the second base.

Furthermore, the rotary experiment platform also comprises a box body with an observation window, and the platform is arranged in the box body.

Flap valve closure capability test device, including the disk seat fixed establishment who is used for the fixed valve seat, be used for driving the core barrel actuating mechanism that the core barrel goes up and down, and a rotation type experiment platform, disk seat fixed establishment and core barrel actuating mechanism install on the second base.

Further, the flap valve closing performance testing device also comprises a valve seat fixing mechanism for fixing the valve seat and a core barrel driving mechanism for driving the core barrel to lift;

the valve seat fixing mechanism and the core barrel driving mechanism are installed on the second base.

Preferably, the valve seat fixing mechanism is a manual mechanism and the core barrel driving mechanism is an automatic mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has:

the inclination of the platform in the utility model can be adjusted, and the closing condition of the flap valve in different drilling directions can be tested; the second base can be rotatory for first base for valve clack disk seat is whole around disk seat axial rotation, under first base and second base combined action, can realize the valve clack at different inclination and different locating position's experiment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a three-dimensional view of a rotary laboratory platform;

FIG. 2 is a three-dimensional view of a closing performance testing device of the flap valve in the first embodiment;

FIG. 3 is a three-dimensional view of the experimental table inside the box body in the first embodiment;

FIG. 4 is a three-dimensional view of the valve seat securing mechanism, core barrel actuator mechanism mounted on the platform;

FIG. 5 is a schematic view of the use of the flap valve of the present invention in testing;

FIG. 6 is a schematic view of the movable clamp and its operating mechanism;

FIG. 7 is a schematic structural view of a magnet linear displacement adjusting mechanism;

fig. 8 is a schematic view of the structure of the flap valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "forward direction" and "reverse direction" and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when using, or the directions or positional relationships that the persons skilled in the art usually understand, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or elements must have specific directions, be constructed and operated in specific directions, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the utility model discloses a rotary experiment platform, including platform 4, platform 4 specifically includes first base 41, second base 42, first rotary driving mechanism 47 and second rotary driving mechanism 43.

A rotary shaft 44 is fixed to both sides of the first base 41, and the rotary shaft 44 is supported by a support base 45 through a bearing or a bearing holder 46. The first rotation driving mechanism 47 is connected to one of the rotation shafts 44 for rotating the first base 41 in the first direction.

The second base 42 is rotatably connected to the first base 41, the second rotation driving mechanism 43 is mounted on the first base 41, and an output end of the second rotation driving mechanism 43 is connected to the second base 42 for driving the second base 42 to rotate in the second direction relative to the first base 41. The second direction is perpendicular to the first direction.

The first and second rotary driving mechanisms 47 and 43 may be manual mechanisms or electric mechanisms. In the present embodiment, the first rotation driving mechanism 47 is a manual mechanism, and the second rotation driving mechanism 43 is an electric mechanism.

The first rotary drive mechanism 47 includes a first hand wheel 471 and a first transmission mechanism. The first transmission mechanism converts the rotational movement of the first hand wheel 471 into the rotational movement of the rotation shaft 44 and the first base 41. In this embodiment, the rotating shaft 44 is perpendicular to the axis of the first hand wheel 471, so the first transmission mechanism is a vertical transmission mechanism, and particularly, a bevel gear vertical transmission mechanism can be selected. The first hand wheel 471 is a driving wheel, the first transmission mechanism is a driven wheel, and the platform 4, the valve seat and the valve clack rotate around the rotating shaft 44 by designing a proper transmission ratio, so that the conditions of vertical drilling, horizontal drilling, inclined drilling and the like are simulated.

The second rotary drive mechanism 43 includes a motor and a gear transmission mechanism that converts the rotary motion of the motor into the rotary motion of the second base 42.

The second seat 42 has a circular hole 421 adapted to the valve seat, and an axis of the circular hole 421 is coaxial with a rotation center of the second seat 42. When the flap valve is mounted on the second base 42, the second rotary drive 43 operates to drive the second base 42, the valve seat and the flap to rotate synchronously about the axis of the valve seat.

The inclination of the platform in the utility model can be adjusted, and the closing condition of the flap valve in different drilling directions can be tested; the second base can be rotatory for first base for valve clack disk seat is whole around disk seat axial rotation, under first base and second base combined action, can realize the valve clack at different inclination and different locating position's experiment.

Based on above-mentioned rotation type experiment platform, the utility model discloses two embodiments.

Example one

As shown in fig. 2 and fig. 3, the embodiment discloses a device for testing the closing performance of a flap valve, which comprises a valve seat fixing mechanism 6 for fixing a valve seat, a core barrel driving mechanism 5 for driving a core barrel to lift, and the rotary experimental platform.

The platform 4 is disposed in the box 100, and the box 100 has a viewing window. The platform 4 is placed in the box 100, and has 3 functions: firstly, a protection function is realized, after the valve clack is closed, air pressure is adopted when the pretightening force of the valve clack is determined, and if a box body is not adopted, certain experimental danger exists when the air pressure is too high; secondly, the modularized hiding of the control mechanism is realized, and each pneumatic and electric device is arranged in the box body 100 to be packaged, so that the effects of tidiness and functional modularization are realized; the test bed not only has an experiment function, but also has a certain valve seat closing action display function, and when the experiment is not needed, the dynamic display of the closing state of the valve clack can be realized, and under the function, the platform is arranged in the box body 100, so that the external interference received in the dynamic display process can be prevented, and a high-speed image tracking system can be integrated in the box body 100, and the dynamic image collection in the closing process of the valve clack is realized.

The valve seat fixing mechanism 6 and the core barrel driving mechanism 5 are mounted on the second base 42.

As shown in fig. 6, the valve seat fixing mechanism 6 includes a pair of clamps, one of which is a fixed clamp 62 and the other of which is a movable clamp 61, and an operating mechanism. The operating mechanism is connected with the movable clamp 61 for operating the movable clamp 61.

The upper surface of the second base 42 is provided with a linear guide 66, and the movable clamp 61 is connected with the linear guide 66 in a sliding way. The operating mechanism comprises a handle 65, a first arm 63, a second arm 67 and a third arm 68, wherein one end of the first arm 63 is connected with the movable clamp 61, the other end of the first arm 63 is rotatably connected with one end of the second arm 67, the other end of the second arm 67 is rotatably connected with one end of the third arm 68, the other end of the third arm 68 is rotatably connected with the mounting seat 64, the mounting seat 64 is fixedly connected with the second base 42, and one end of the handle 65 is fixedly connected with the third arm 68.

By rotating the handle 65 in the forward direction or the reverse direction, the third arm 68 can be driven to rotate around the mounting seat 64, and then the first arm 63 is pulled or pushed, the movable clamp 61 moves linearly, the distance between the movable clamp 61 and the fixed clamp 62 is adjusted, and the valve seat is clamped or loosened.

The core barrel driving mechanism 5 is used to lift the core barrel. The core barrel driving mechanism 5 includes a core barrel holder 54 for holding the core barrel and a linear driving mechanism for driving the core barrel holder 54 to move linearly. The linear driving mechanism can be selected from a hydraulic cylinder, an air cylinder, a linear motor and the like.

In this embodiment, the linear driving mechanism is a linear motor, and specifically includes a motor 51, a linear guide rail 52, a slider 53, a ball screw, and the like, which is conventional in the art and will not be described herein again. The core barrel holder 54 is fixedly connected to the slide 53.

As shown in fig. 4 and 8, the flap valve includes a valve seat 1 and a valve flap 2, and the valve flap 2 is attached to one side of the top end of the valve seat 1.

The valve clack 2 is provided with a second magnetic part 9, and the valve seat 1 is provided with a third magnetic part 10 for attracting the second magnetic part 9. In another embodiment, the valve seat 1 may not have the third magnetic member 10. In order to test the sealing pressure of the flap valve conveniently, the bottom end of the valve seat 1 is connected with a sealing plate 11, and the sealing plate 11 is provided with a gas injection hole 12; when the valve clack is closed, air pressure can be injected into the valve seat 1 through the air injection hole 12, and the maximum sealing pressure can be tested by monitoring the change of the internal pressure.

In order to provide an initial closing power for the valve clack 2, the second base 42 is also provided with a first magnetic part 8 with adjustable position and a magnet linear displacement adjusting mechanism 7 for linearly adjusting the position of the first magnetic part 8. By adjusting the position of the first magnetic member 8, the repulsive force thereof to the second magnetic member 9 is adjusted. The magnetic member may be a magnet, such as a permanent magnet. The second magnetic member 9 may be embedded in the valve flap 2.

As a better alternative: the valve clack 2 is made of paramagnetic material with large magnetic conductivity and high compressive strength. The reason is that: a paramagnetic material is selected to manufacture the valve clack 2, the permanent magnet on the valve clack 2 can magnetize the valve clack 2, after the valve clack 2 is closed, the magnetic potential of the permanent magnet inside the valve seat 1 can be coupled with the magnetic potential possessed by the valve clack 2, and according to the principle of minimum potential energy, the valve clack can have a larger attraction force, so that the gravitational potential is overcome, and the effect of continuous closing is achieved. In the embodiment, iron is selected as the valve flap 2, and the valve seat 1 is selected to be stainless steel. The reason why the valve seat 1 is made of stainless steel is as follows: the stainless steel is a low-permeability substance, and the magnetic field in the stainless steel does not generate magnetic potential on the stainless steel, so that the closing track of the valve clack 2 is not influenced.

As shown in fig. 4 and 5, the magnet linear displacement adjusting mechanism 7 is mounted on the surface of the second base 42. The magnet linear displacement adjusting mechanism 7 can be a manual mechanism, and can also be an automatic mechanism such as electric, pneumatic and hydraulic mechanisms.

As shown in fig. 7, the magnet linear displacement adjusting mechanism 7 in this embodiment is a manual mechanism. The magnet linear displacement adjusting mechanism 7 comprises a second hand wheel 71 and a second transmission mechanism, and the second transmission mechanism converts the rotary motion of the second hand wheel 71 into the linear motion of the first magnetic part 8. In this embodiment, the axis of the second wheel 71 is perpendicular to the displacement direction of the first magnetic member 8, and thus the second transmission mechanism includes a worm gear transmission mechanism and a lead screw nut transmission mechanism.

Nut 75 and second base 42 sliding connection of lead screw nut drive mechanism, magnet mount pad 77 is connected with nut 75 through guide arm 76, and first magnetic part 8 is installed on magnet mount pad 77, is equipped with pressure sensor 78 between first magnetic part 8 and the magnet mount pad 77, and magnet mount pad 77 and second base 42 sliding connection. The working principle is as follows:

(1) manually rotating the second handwheel 71 to drive the worm 72 to drive the worm wheel 73 to vertically rotate;

(2) the worm wheel 73 is arranged on the screw rod 74, and the rotating screw rod 74 drives the nut 75 to move linearly;

(3) the nut 75 transmits the movement to the magnet mounting seat 77, the pressure sensor 78 and the first magnetic member 8 through the guide rod 76;

(4) when the first magnetic member 8 meets the second magnetic member 9 on the valve flap, the homopolar magnet generates repulsion because the second magnetic member 9 is opposite to the homopolar magnet of the first magnetic member 8, pressure is generated on the pressure sensor 78, and the magnitude of the repulsion can be measured through the pressure sensor 78.

The initial acceleration can be determined by measuring the repulsive force, so that a dynamic model of the closing of the valve clack is established, and the instantaneous motion state of the valve clack in the rotating closing process is researched; furthermore, the measured repulsive force can be compared with the elastic force generated by the existing spring trigger model, and the size of the existing magnet is optimized through backstepping according to the dynamic model.

In order to realize the test of sealing pressure, the device for testing the closing performance of the flap valve further comprises a gas injection system, and the gas injection system is used for injecting gas into the closed flap valve. The gas injection system comprises a pneumatic pump, a gas injection pipe and a pressure valve, wherein the gas injection pipe is used for being connected with a gas injection hole 12 at the bottom of the valve seat in a sealing mode, and the numerical value of the pressure valve is converted into real-time data on a display screen through a computer.

The box 100 is provided with a control system, and the control system comprises a controller and a human-computer interaction module 101. The second rotary drive mechanism 43, the core barrel drive mechanism 5 and the gas injection system are all connected to the control system.

The control system can reduce the manual operation times, adopts man-machine interaction, realizes artificial intelligence operation, is convenient and quick, and reduces the experiment precision problem and the safety risk caused by manual operation in the experiment process. The functions of the control system mainly include: the core barrel is controlled to be lifted quickly, and the lifting speed can be monitored; the first base 41 and the valve seat valve clack are controlled to rotate 360 degrees around the axis of the valve seat, the closing condition of the valve clack at different positions is monitored, and the control and monitoring of the rotating angle can be realized; after the flap valve is closed, a pretightening force test can be realized, and the real-time monitoring is realized by controlling the air pressure through the man-machine interaction module.

The control of the lifting of the core barrel depends on the core barrel driving mechanism 5, and the lifting speed of the core barrel can be controlled by controlling the speed of the motor 51; naturally, the lifting speed of the core barrel can be monitored by the rotating speed of the motor.

The pumping speed of the core barrel on site can be simulated as truly as possible by adjusting the lifting speed of the core barrel; in addition, it can also be determined experimentally whether there is an optimum lifting speed.

The utility model discloses a use method:

1, initial state: as shown in fig. 4 and 5, the valve seat 1 of the flap valve is held by the fixed clips 62 and the movable clips 61, and the core barrel 3 is held by the core barrel holder 54; in the initial state, the core barrel 3 is located in the valve seat 1, the flap 2 of the flap valve is in the open state, and the first magnetic member 8 gives an initial power to the flap 2, which can be detected by the corresponding pressure sensor 78.

2, performing an initial experiment, enabling the valve seat 1 to be axially vertical to a horizontal plane, operating the core barrel driving mechanism 5, lifting the core barrel 3, and moving the core barrel 3 out of the valve seat 1 and crossing the valve clack 2; the valve clack 2 performs variable acceleration movement under the action of the repulsive force of the first magnetic part 8 to realize rotary closing, and at the moment, a normal vertical coring state is simulated;

and 3, readjusting to an initial state, rotating the first hand wheel 471 to enable the axis of the valve seat 1 to form a certain included angle with the horizontal plane, rotating the second base 42 by a certain angle by using the control system, operating the core barrel driving mechanism 5 at the moment, lifting the core barrel 3, and when the core barrel 3 moves out of the valve seat 1, if the valve clack 2 can realize a rotary closing power process at different angles, the rotary closing experiment is successful at the moment.

After the valve clack 2 is closed, the third magnetic part 10 on the valve seat 1 can generate a pretightening force for the valve clack 2, so that the valve clack 2 generates a tight closing effect, at the moment, the inside of the valve seat 1 is filled with gas through the man-machine interaction module 101, the pressure is monitored through the pressure gauge, the real-time state of the pressure can be displayed on a display screen of the control system at the moment, the pressure is relieved after the pressure reaches the maximum value, and the control system can automatically record and display the peak value of the pressure and the process change rule.

The peak value of the internal air pressure of the valve seat 1 is the pretightening force generated by the third magnetic part 10 on the valve seat 1 to the valve clack 2, namely the initial pretightening force, when the generated initial pretightening force is large, the valve clack can generate certain pressure maintaining capacity, and the pressure maintaining effect after closing is realized.

Example two

The first susceptor 41 and the second susceptor 42 are disk-shaped in this embodiment. The first pedestal 41 is disposed in parallel with the second pedestal 42. Two rotation shafts 44 are provided radially on opposite sides of the first base 41.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. A rotation type experiment platform which characterized in that: the device comprises a platform, wherein the platform comprises a first base, a second base, a first rotary driving mechanism and a second rotary driving mechanism;

the first rotation driving mechanism is connected with the first base and used for driving the first base and the second base to rotate in a first direction;

the second base is rotatably connected with the first base, and the second rotary driving mechanism is connected with the second base and used for driving the second base to rotate in a second direction relative to the first base;

the second direction is perpendicular to the first direction.

2. A rotary laboratory platform according to claim 1, wherein: two sides of the first base are connected with rotating shafts, and the rotating shafts are supported on the supporting seat through bearings and bearing seats; the first rotary drive mechanism is connected to one of the rotary shafts.

3. A rotary laboratory platform according to claim 2, wherein: the first rotary driving mechanism is a manual mechanism.

4. A rotary laboratory platform according to claim 3, wherein: the first rotary driving mechanism comprises a first hand wheel and a first transmission mechanism, and the first transmission mechanism converts the rotary motion of the first hand wheel into the rotary motion of the rotary shaft and the first base;

the rotation axis is perpendicular to the axis of the first handwheel.

5. A rotary assay platform according to claim 1, 3 or 4, wherein: the second rotary drive mechanism includes a motor.

6. A rotary laboratory platform according to claim 1, wherein: the second base is provided with a round hole matched with the valve seat, and the axis of the round hole is coaxial with the rotation center of the second base.

7. A rotary laboratory platform according to claim 1, wherein: the device also comprises a box body with an observation window, and the platform is arranged in the box body.

8. Flap valve closure capability test device, its characterized in that: the rotary experiment platform comprises a valve seat fixing mechanism for fixing a valve seat, a core barrel driving mechanism for driving a core barrel to lift and lower, and the rotary experiment platform as claimed in any one of claims 1 to 7, wherein the valve seat fixing mechanism and the core barrel driving mechanism are installed on the second base.

9. The flap valve closing performance testing device according to claim 8, characterized in that: the valve seat fixing mechanism is a manual mechanism, and the core barrel driving mechanism is an automatic mechanism.

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