One-way steel wire feeding device

Abstract

The utility model discloses a one-way steel wire feeding device. Comprising a driving mechanism, a feeding mechanism and a resetting mechanism, the driving mechanism is positioned on one side of the feeding mechanism and the resetting mechanism; the two resetting mechanisms are correspondingly arranged by taking the driving mechanism as a reference, and provide resilience force for resetting the feeding mechanism after the steel wire is fed; the feeding mechanism is located between the two reset mechanisms, the outer sides of the top ends of the two reset mechanisms are sleeved with the two sides of the feeding mechanism respectively, and the feeding mechanism moves up and down along the reset mechanisms and is connected with the driving structure. The steel wire is clamped by the feeding mechanism, and the driving mechanism provides driving force for the feeding mechanism to lower the steel wire to a preset test position when the steel wire is lowered during test operation; and through the arranged reset mechanism, the feeding mechanism is reset and the clamped steel wire is loosened, so that an operator can feed and loosen the steel wire on the ground, and the risk caused by high-altitude operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of downhole testing instrument technology, specifically a unidirectional wire feeding device. Background Technology

[0002] In dynamic testing operations at gas wells, the precise deployment of downhole testing instruments to the target formation via a wireline suspension system is a necessary technical means to obtain key parameters such as reservoir permeability, formation pressure, and productivity coefficient. However, conventional wireline rigging devices (including blowout preventer, grease sealing system, and drum drive mechanism) face a bottleneck during lowering operations due to an imbalance between the wellbore pressure field and the lowering pull system, known as "wireline locking." Specifically, when the annular pressure (P) of the gas well and the vertical pull (F) applied by the wireline lowering device meet the critical condition of P·A≥F (where A is the cross-sectional area of ​​the wireline), the wireline exhibits a surge in static friction, causing discontinuous motion stagnation in the mechanical transmission system. At this point, the downhole instruments cannot overcome the pressure barrier to continue descending, resulting in an interruption of the testing operation. Furthermore, existing solutions often rely on manual adjustment of the blowout preventer's pressure relief valve, requiring operators to intervene at high altitudes in the high-pressure zone at the wellhead, posing significant safety risks such as H2S leakage impact and blowout preventer puncture injuries. Utility Model Content

[0003] The purpose of this invention is to provide a simple, easy-to-operate, one-way wire guide device. During gas well testing, when the wire guide is difficult to insert due to pressure imbalance between the wellhead and the well, this device effectively breaks the equilibrium, ensuring the wire guide is successfully lowered to the designated position within the gas well, thus reducing operational risks. The specific solution is as follows:

[0004] A unidirectional wire feeding device includes: a driving mechanism, a feeding mechanism, and a reset mechanism;

[0005] The drive mechanism is located on one side of the feeding mechanism and the reset mechanism. The drive mechanism provides downward pressure to the feeding mechanism to achieve clamping and feeding of the steel wire.

[0006] The reset mechanism is provided in two corresponding positions with reference to the drive mechanism, and provides a spring force for the feeding mechanism to reset after the steel wire is fed in;

[0007] The feeding mechanism is located between the two reset mechanisms, and is respectively sleeved on the outer sides of the top of the two reset mechanisms. The feeding mechanism moves up and down along the reset mechanism to realize the reset or wire clamping and feeding action. The feeding mechanism is connected to the drive mechanism.

[0008] Preferably, the feeding mechanism includes a pressing member and a wire clamping assembly arranged vertically.

[0009] The pressing member and the wire clamping assembly are respectively located between the two reset mechanisms;

[0010] The pressing member is fastened to the top of the wire clamping assembly. Two sides of the pressing member are located on the sides of the wire clamping assembly facing and away from the driving mechanism, respectively. The other two sides of the pressing member are respectively mounted on the two reset mechanisms and move up and down along the reset mechanisms.

[0011] The pressing member is located on the side of the wire clamping assembly facing the driving mechanism and is connected to the driving mechanism; the pressing member is located on the side of the wire clamping assembly facing away from the driving mechanism and presses against the wire clamping assembly;

[0012] The wire clamping assembly is respectively sleeved on the two reset mechanisms on both sides. The wire clamping assembly moves downward along the reset mechanism to clamp and feed the wire by pressing down the pressing member. The wire clamping assembly is reset and released from clamping the wire by relying on the rebound force of the reset mechanism.

[0013] Preferably, the pressing member is a U-shaped structure with the opening facing downwards;

[0014] The two side walls of the U-shaped structure are located on the two sides of the wire clamping assembly facing and back to the driving mechanism, respectively, and the two end faces of the U-shaped structure have connecting parts extending outward along the extension direction;

[0015] The connecting parts are respectively sleeved on the top outer side of the two reset mechanisms.

[0016] Preferably, the wire clamping assembly includes a mounting base;

[0017] The mounting base is respectively fitted onto the reset mechanisms on both sides. The mounting base is provided with a mounting cavity. The center of the side of the mounting base facing away from the drive mechanism is provided with a first positioning groove.

[0018] The top center of the pressing component is provided with a positioning hole, and the center of the pressing component on the side of the mounting base facing away from the driving mechanism is respectively located in the second positioning groove.

[0019] The second positioning groove is an L-shaped groove with an opening facing downwards. One end of the second positioning groove is connected to the positioning hole, and the other end of the second positioning groove faces downwards and is connected to the outside. The second positioning groove is provided in correspondence with the first positioning groove, and both are grooves that extend through the front and back directions.

[0020] The mounting cavity is a through cavity extending vertically along the mounting base, and two clamping blocks are correspondingly provided inside the mounting cavity;

[0021] The first positioning groove is vertically arranged along the mounting base, and the first positioning groove communicates with the mounting cavity;

[0022] The two clamping blocks are respectively disposed on both sides of the first positioning groove, and a drive rod is disposed between the two clamping blocks and the mounting cavity;

[0023] The drive rod is suspended on the mounting base. One end of the drive rod extends into the mounting cavity and connects to the two clamping blocks. The other end of the drive rod passes through the mounting base and is located on the side of the mounting base opposite to the drive rod. The drive rod moves along the mounting base at an angle upward or downward to drive the two clamping blocks to move synchronously, thereby increasing or decreasing the gap between the two clamping blocks on opposite sides, thus loosening or clamping the steel wire.

[0024] Preferably, the mounting base has two guide grooves on the side facing and away from the drive mechanism, respectively;

[0025] The two guide grooves located on the same side have an inverted V-shape structure and are respectively disposed on both sides of the first positioning groove;

[0026] The drive rods are respectively connected vertically to the guide grooves and slide along the guide grooves.

[0027] Preferably, the opposite surfaces of the mounting base on both sides of the reset mechanism are inclined surfaces, and the inclination of the inclined surfaces matches the guide groove. The opposite sides of the two clamping blocks slide along the inclined surfaces respectively.

[0028] Preferably, the reset mechanism includes a guide post;

[0029] The guide post is arranged parallel to one side of the drive mechanism, and a first spring and a second spring are respectively sleeved on the guide post from top to bottom;

[0030] The first spring is located between the lower pressure member and the wire clamping assembly, and the two ends of the first spring are respectively connected to the lower pressure member and the wire clamping assembly;

[0031] One end of the second spring is connected to the wire clamping assembly, and the other end of the second spring is mounted on the bottom of the guide post.

[0032] Preferably, the drive mechanism includes a mounting frame, a guide wheel assembly mounted on the mounting frame, and a pull rope wound around the guide wheel assembly;

[0033] The reset mechanism is installed on one side of the mounting bracket;

[0034] The guide wheel assembly is installed on the side of the mounting bracket facing the reset mechanism, and the guide wheel assembly includes a first guide wheel and a second guide wheel;

[0035] The first guide wheel and the second guide wheel are spaced apart in the horizontal direction, the wheel axes of the first guide wheel and the second guide wheel are parallel, and the first guide wheel and the second guide wheel are respectively mounted on the mounting bracket;

[0036] One end of the pull rope is located at the ground, and the other end of the pull rope passes through the first guide wheel and the second guide wheel in sequence before being connected to the pressure member.

[0037] Compared with the prior art, the beneficial effects of this application are as follows:

[0038] Beneficial effects:

[0039] This application utilizes a feeding mechanism to clamp the steel wire. A drive mechanism, during testing, provides a driving force to the feeding mechanism when the tension applied to the wire by the lowering equipment at the wellhead and the opposing force exerted on the wire by the pressure inside the gas well reach a balance that prevents further lowering. This effectively breaks the balance, allowing the wire to be lowered to the predetermined testing position. A reset mechanism resets the feeding mechanism and releases the clamped wire after it has been fed into the testing position. This allows operators to perform the wire feeding and releasing processes from the ground, eliminating the need to climb to the top of the blowout preventer and avoiding the risks associated with working at height. This provides a simple, easy-to-operate, one-way steel wire feeding device that effectively breaks the balance when the wire is difficult to feed due to pressure imbalance at the wellhead and inside the well, ensuring the wire is successfully lowered to the designated position within the gas well and reducing operational risks. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a unidirectional steel wire feeding device provided in an embodiment of this application;

[0041] Figure 2 A left view of a unidirectional wire feeding device provided in an embodiment of this application;

[0042] Figure 3 A front view of a unidirectional wire feeding device provided in an embodiment of this application;

[0043] Figure 4 A cross-sectional view along the horizontal centerline of the lower pressure member in a unidirectional wire feeding device provided in this application embodiment;

[0044] Figure 5 This is an installation diagram of a unidirectional steel wire feeding device provided in an embodiment of this application;

[0045] Figure 6 Please provide a schematic diagram showing the connection between the pull rope and the guide wheel in this application;

[0046] Figure 7 This application provides a schematic diagram of the structure of a mounting base in a unidirectional wire feeding device.

[0047] In the diagram: 1. Base; 2. First guide wheel; 3. Second spring; 4. Mounting base; 5. First spring; 6. Guide post; 7. Upper connecting part of guide post; 8. Drive mechanism; 9. Pull rope; 10. Positioning hole; 11. Lower pressing part; 12. Second positioning groove; 13. Drive rod; 14. Guide groove; 15. First positioning groove; 16. Lower connecting part of guide post; 17. Second guide wheel; 18. Column; 19. Clamping block; 20. Blowout preventer; 21. Inclined surface. Detailed Implementation

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figure 1-4 This utility model provides a unidirectional steel wire feeding device, including: a driving mechanism, a feeding mechanism and a reset mechanism;

[0050] The drive mechanism is located on one side of the feeding mechanism and the reset mechanism. The drive mechanism provides downward pressure to the feeding mechanism to achieve clamping and feeding of the steel wire.

[0051] The reset mechanism is provided in two corresponding positions with reference to the drive mechanism, and provides a spring force for the feeding mechanism to reset after the steel wire is fed in;

[0052] The feeding mechanism is located between the two reset mechanisms, and is respectively sleeved on the outer sides of the top of the two reset mechanisms. The feeding mechanism moves up and down along the reset mechanism by being driven by the drive mechanism or by the rebound of the reset mechanism, so as to realize the reset or wire clamping and feeding action. The feeding mechanism is connected to the drive mechanism.

[0053] It should be noted that:

[0054] In this application, the center planes of the feeding mechanism and the reset mechanism are located on the same plane and are both installed on the same side of the drive mechanism; when the wire is difficult to feed in due to the pressure balance between the wellhead and the well, the drive mechanism provides a downward driving force to the feeding mechanism, breaking this balance state, so that the feeding mechanism can smoothly lower the wire to the designated position in the gas well.

[0055] After the steel wire is lowered to the designated position in the gas well and tested, the reset mechanism springs back upward, causing the wire feeding mechanism to move upward. At this time, the wire feeding mechanism resets and releases the steel wire to prepare for the next wire feeding operation.

[0056] Furthermore, the feeding mechanism includes a pressing member 11 and a wire clamping assembly arranged vertically;

[0057] The pressing member 11 and the wire clamping assembly are respectively located between the two reset mechanisms;

[0058] The pressing member 11 is fastened to the top of the wire clamping assembly. Two sides of the pressing member 11 are located on the two sides of the wire clamping assembly facing and away from the driving mechanism, respectively. The other two sides of the pressing member 11 are respectively mounted on the two reset mechanisms and move up and down along the reset mechanisms.

[0059] The pressing member 11 is located on the side of the wire clamping assembly facing the driving mechanism and is connected to the driving mechanism; the pressing member 11 is located on the side of the wire clamping assembly facing away from the driving mechanism and presses against the wire clamping assembly;

[0060] The wire clamping assembly is respectively sleeved on the two reset mechanisms on both sides. The wire clamping assembly moves downward along the reset mechanism to clamp and feed the wire by the downward pressure of the pressing member 11. The wire clamping assembly is reset and released from clamping the wire by the rebound force of the reset mechanism.

[0061] It should be noted that:

[0062] In this application, the vertical center lines of the pressing member 11 and the wire clamping assembly coincide, and the reset mechanism is set on both sides with the center lines of the two as a reference.

[0063] The lower pressure member 11 is located on the side of the wire clamping assembly facing the drive mechanism and is connected to the drive mechanism. The drive mechanism can provide power to the lower pressure member 11 to make it move up and down. The lower pressure member 11 is located on the side of the wire clamping assembly facing away from the drive mechanism and presses against the wire clamping assembly. When the lower pressure member 11 moves, it applies pressure to the wire clamping assembly through this pressing action, so that the wire clamping assembly moves down together to achieve the clamping of the steel wire and sending it into the designated position in the gas well.

[0064] Furthermore, the pressing member 11 is generally a U-shaped structure with the opening facing downwards;

[0065] The two side walls of the U-shaped structure are located on the two sides of the wire clamping assembly facing and back to the driving mechanism, respectively, and the two end faces of the U-shaped structure have connecting parts extending outward along the extension direction;

[0066] The connecting parts are respectively sleeved on the top outer side of the two reset mechanisms.

[0067] It should be noted that:

[0068] In this application, the U-shaped structure has two sidewalls (i.e., located on the front and rear sides of the wire clamping assembly). These two sidewalls are located on both sides of the wire clamping assembly, one side being the side of the wire clamping assembly facing the drive mechanism, and the other side being the side of the wire clamping assembly facing away from the drive mechanism. The U-shaped structure has two end faces (i.e., located on the left and right sides of the wire clamping assembly) extending outward along the extension direction (i.e., towards the reset mechanism on the same side), from which connecting portions are formed.

[0069] The extension has a horizontal ring structure, which allows it to be movably fitted onto the outer side of the top of the two reset mechanisms.

[0070] Furthermore, the wire clamping assembly includes a mounting base 4;

[0071] The mounting base 4 is respectively sleeved on the reset mechanisms on both sides. The mounting base 4 is provided with a mounting cavity. The center of the side of the mounting base 4 facing away from the drive mechanism is provided with a first positioning groove 15.

[0072] The top center of the pressing member 11 is provided with a positioning hole 10, and the center of the pressing member 11 on the side of the mounting base 4 facing away from the driving mechanism is respectively located in the second positioning groove 12.

[0073] The second positioning groove 12 is an L-shaped groove with an opening facing downwards. One end of the second positioning groove 12 is connected to the positioning hole 10, and the other end of the second positioning groove 12 is connected to the outside world with a downward orientation. The second positioning groove 12 is correspondingly provided with the first positioning groove 15, and both of them are grooves that extend through the front and back directions.

[0074] The mounting cavity is a through cavity (i.e., a mounting cavity with open ends) along the vertical direction of the mounting base 4, and two clamping blocks 19 are correspondingly provided in the mounting cavity;

[0075] The first positioning groove 15 is vertically arranged along the mounting base 4, and the first positioning groove 15 communicates with the mounting cavity;

[0076] The two clamping blocks 19 are respectively disposed on both sides of the first positioning groove 15, and a drive rod 13 is disposed between the two clamping blocks 19 and the mounting cavity respectively;

[0077] The drive rod is suspended on the mounting base 4. One end of the drive rod 13 extends into the mounting cavity and is connected to the two clamping blocks 19. The other end of the drive rod 13 passes through the mounting base 4 and is located on the side of the mounting base 4 opposite to the drive rod 13. The drive rod 13 moves along the mounting base 4 in an upward or downward direction to drive the two clamping blocks 19 to move synchronously, thereby increasing or decreasing the gap between the two clamping blocks 19 on opposite sides, thus loosening or clamping the steel wire.

[0078] It should be noted that:

[0079] In one embodiment of this application, as shown in the appendix Figure 7 The mounting base 4 shown has cylindrical structures on both sides (i.e., the left and right sides) facing the two reset mechanisms, so that it can be sleeved on the reset mechanism and can move up and down along the extension direction of the reset mechanism; the front side of the mounting base 4 (the side facing away from the drive mechanism) is provided with a first positioning groove 15 along the vertical center line. The first positioning groove 15 is connected to the mounting cavity, so that the steel wire can be fed into the two clamping blocks 19 through the first positioning groove 15.

[0080] Two clamping blocks 19 are respectively positioned on both sides of the first positioning groove 15. When the steel wire is inserted from the first positioning groove 15 into the space between the two clamping blocks 19, since the two clamping blocks 19 are respectively connected to the corresponding drive rods 13, and the pressing member 11 is located on the side of the wire clamping assembly facing away from the drive mechanism and presses against the other end of the drive rod 13, the pressing member 11 is driven by the drive mechanism to press downward, thereby causing the drive rod 13 to drive the two clamping blocks 19 to move downward along the oblique direction of the mounting base 4. During the pressing process, the gap between the two clamping blocks 19 decreases to clamp the steel wire. After that, the entire mounting base 4 and the pressing member 11 continue to move downward to feed the steel wire.

[0081] Then, the spring-loaded pressing member 11 of the reset mechanism and the mounting base 4 are pushed upward to reset the entire feeding mechanism. At the same time, the two clamping blocks 19 move upward along the oblique direction of the mounting base 4 to release the clamped steel wire.

[0082] Furthermore, the mounting base 4 is provided with two guide grooves 14 on the side facing and away from the driving mechanism (i.e., the front and rear sides of the mounting base);

[0083] The two guide grooves 14 located on the same side have an inverted V-shape structure and are respectively disposed on both sides of the first positioning groove 15;

[0084] The drive rods 13 are respectively connected vertically to the guide grooves 14 and slide along the guide grooves 14.

[0085] It should be noted that:

[0086] In this application, the two guide grooves 14 are respectively connected to the outer side of the mounting base 4 and the mounting cavity. The two guide grooves 14 are arranged in an inverted V-shape with the first positioning groove 15, which means that the distance between the two guide grooves 14 and the first positioning groove 15 decreases linearly from top to bottom. That is, the two guide grooves 14 gradually approach each other from top to bottom. By setting the guide grooves 14, the drive rod 13 will change along the movement trajectory of the guide grooves 14 during the sliding process, so that when the two clamping blocks 19 move upward with the corresponding drive rod 13, the gap between the two clamping blocks 19 increases to loosen the steel wire, and when they move downward, the gap between the two clamping blocks 19 decreases to clamp the steel wire.

[0087] Furthermore, the opposite surfaces of the mounting base 4 on both sides of the reset mechanism (i.e., both sides of the guide post) are inclined surfaces, and the inclination of the inclined surfaces matches the guide groove 14. The opposite sides of the two clamping blocks 19 slide along the inclined surface 21 respectively.

[0088] It should be noted that:

[0089] In this application, the sliding of the two clamping blocks 19 with the inclined surface is achieved by a slider and a groove;

[0090] The slide groove is provided along the extension direction of the inclined surface, and the slider is connected to the opposite side of the two clamping blocks 19. The slider is slidably connected to the slide groove, thereby improving the stability of the connection between the two clamping blocks 19.

[0091] Furthermore, the reset mechanism includes a guide post 6;

[0092] The guide post 6 is arranged parallel to one side of the drive mechanism (i.e., both are arranged vertically), and the guide post 6 is fitted with a first spring 5 and a second spring 3 from top to bottom respectively;

[0093] The first spring 5 is located between the lower pressure member 11 and the wire clamping assembly, and the two ends of the first spring 5 are respectively connected to the lower pressure member 11 and the wire clamping assembly;

[0094] One end of the second spring 3 is connected to the wire clamping assembly, and the other end of the second spring 3 is installed at the bottom of the guide post 6.

[0095] It should be noted that:

[0096] In this application, the guide posts 6 correspond to the opposite sides (specifically the left and right sides) of the mounting base 4 in the lower pressure member 11 and the wire clamping assembly, respectively.

[0097] The first spring 5 and the second spring 3 are respectively sleeved on the guide post 6. The two ends of the first spring 5 are respectively connected to the lower pressure member 11 and the wire clamping assembly (specifically connected to the inner side of the mounting seat 4 in the wire clamping assembly). One end of the second spring 3 is connected to the inner side of the mounting seat 4 in the wire clamping assembly, and the other end of the second spring 3 is installed on the outer side of the bottom end of the guide post 6.

[0098] When the pressing member 11 moves downward under the external force applied by the driving mechanism, the pressing member 11 moves downward and compresses the first spring 5. During this process, the pressing member 11 presses against the driving rod 13 and pushes the two clamping blocks 19 downward, so that the gap between the two clamping blocks 19 gradually decreases, so as to clamp the steel wire. After the first spring 5 is fully compressed, as the driving mechanism continues to apply external force, it forces the pressing member 11 and the entire wire clamping assembly to continue to move downward until the steel wire is sent into the target position in the gas well to continue subsequent work. During this process, the second spring 3 is gradually compressed. When the driving mechanism stops applying external force, the second spring 3 releases the compressed elastic potential energy. Its rebound force pushes the wire clamping assembly and the pressing member 11 connected to it to move upward, so that the two gradually move in the direction of reset. Then the first spring 5 releases its compressed elastic potential energy. Its rebound force pushes the pressing member 11 to continue to move upward, so that the pressing member 11 is separated from the driving rod 13. At this time, the two clamping blocks 19 have no external force pressing down and loosen their clamping of the steel wire. This allows the lowering component 11 and the wire clamping assembly to reset and release the clamping of the steel wire. Furthermore, the two reciprocating clamping blocks 19 provide a stronger grip on the steel wire than a human hand.

[0099] Furthermore, the drive mechanism includes a mounting frame, a guide wheel assembly mounted on the mounting frame, and a pull rope 9 wound around the guide wheel assembly;

[0100] The reset mechanism is installed on one side of the mounting bracket;

[0101] The fixed pulley 8 is located above the reset mechanism, and the fixed pulley 8 is mounted on the top of the mounting bracket;

[0102] The guide wheel assembly is located between the mounting frame and the reset mechanism, and the guide wheel assembly includes a first guide wheel 2 and a second guide wheel 17.

[0103] The first guide wheel 2 and the second guide wheel 17 are spaced apart along the horizontal direction, wherein the first guide wheel 2 is located between the second guide wheel 17 and the mounting base 4, and the first guide wheel 2 and the second guide wheel 17 are respectively mounted on the mounting frame;

[0104] One end of the pull rope 9 is located at the ground, and the other end of the pull rope 9 is connected to the pressure member 11 via the top of the first guide wheel 2 and the top of the second guide wheel 17.

[0105] It should be noted that:

[0106] In this application, the connection between the reset mechanism and the mounting bracket is achieved through the guide post 6, wherein the guide post 6 is vertically installed on one side of the mounting bracket;

[0107] In one embodiment of the application, the mounting bracket includes a base 1 and a column 18. The column 18 is vertically mounted on the base 1, and the column 18 is provided with guide column upper connecting part 7 and guide column lower connecting part 16 at intervals along the length direction.

[0108] The upper connecting part 7 and the lower connecting part 16 of the guide column are respectively disposed between the top end of the guide column 6 and the column 18, and between the bottom end of the guide column 6 and the column 18. One end of the upper connecting part 7 and the lower connecting part 16 of the guide column is connected to the column 18, and the other end of the upper connecting part 7 and the lower connecting part 16 of the guide column is connected to the top end and the bottom end of the guide column 6, respectively. The upper connecting part 7 and the lower connecting part 16 of the guide column are each trapezoidal structures composed of two connecting rods. One end of the two connecting rods is connected to the column 18, and the other end of the two connecting rods is connected to the top end and the bottom end of the guide column 6, respectively.

[0109] In order to prevent the connecting part of the pressing part from being ejected from the reset mechanism by the spring force of the reset mechanism, the connecting part 7 on the upper part of the guide post is installed on the side of the connecting part facing away from the wire clamping assembly. In order to prevent the second spring 3 from sliding out from the bottom end of the guide post 6, the connecting part 16 on the lower part of the guide post is installed on the outside of the second spring 3 to prevent the second spring 3 from sliding out of the guide post 6.

[0110] The first guide wheel 2 and the second guide wheel 17 are respectively installed on the lower connecting part 16 of the guide column. The first guide wheel 2 and the second guide wheel 17 are parallel. The two ends of the first guide wheel 2 and the second guide wheel 17 are respectively connected to the two connecting rods of the lower connecting part 16 of the guide column through a rotating shaft, and rotate around the axis of the rotating shaft.

[0111] like Figure 6 As shown, one end of the pull rope 9 is located at the ground for easy operation; the other end extends from the side of the first guide wheel 2 near the column, wraps around the top of the first guide wheel 2, and then changes direction downwards for the first time. Afterwards, it wraps around the bottom of the second guide wheel 17 and changes direction a second time. Then, the side of the second guide wheel 17 facing away from the first guide wheel 2 connects upwards to the side of the lowering member 11 located on the wire clamping assembly facing the drive mechanism (i.e., the rear side of the mounting base 4 in the wire clamping assembly). By pulling one end of the pull rope 9 at the ground, the direction of force is changed by the guide wheel assembly, which drives the lowering member 11 to perform the downward pressing action. This allows operation without personnel climbing to the top of the blowout preventer, avoiding the risks associated with working at height.

[0112] In one embodiment of this application, a connecting ear 8 is provided on the rear side of the mounting base 4 near the bottom end, and the tension 9 is fixed at the connecting ear 8.

[0113] It should be noted that: before gas well testing operations, the device described in this application should be installed according to the attached... Figure 5 As shown, the device is installed at the top of the blowout preventer 20. The seat has a ring structure and is fitted over the blowout preventer 20. During the logging operation, the clamp 19 of this device is in a loose state during the wireline lowering process, so it will not affect the lowering of the wireline.

[0114] When the pressure inside the gas well and the wire rope reaches equilibrium, the operator pulls the rope from the ground. The rope lowers the pressure-reducing component 11, which in turn presses down the clamping block 19, clamping the wire rope. Continuing to pull the rope causes the pressure-reducing component 11, clamping block 19, and mounting base 4 to move downwards along the guide post 6, feeding the wire rope into the blowout preventer 20. Releasing the rope causes the pressure-reducing component 11 to release and move upwards. Under the action of the first spring 5, the pressure-reducing component 11 separates from the drive rod 13, and the clamping block 19 releases the wire rope and moves upwards. Under the action of the second spring 3, the clamping block 19, mounting base 4, and pressure-reducing component 11 continue to move upwards, returning to their initial position. This process is repeated until the equilibrium is broken, and the wire rope automatically descends into the well under gravity.

Claims

1. A one-way wire feeding device, characterized in that The utility model relates to a steel wire feeding device, including: Driving mechanism, feeding mechanism and reset mechanism; The driving mechanism is located at one side of the feeding mechanism and the reset mechanism, and the driving mechanism provides the pressing force of the feeding mechanism to realize the clamping and feeding of the steel wire; The reset mechanism is correspondingly provided with two reset mechanisms with reference to the driving mechanism, and the reset mechanism provides the rebound force of the reset of the feeding mechanism after the feeding of the steel wire; The feeding mechanism is located between the two reset mechanisms and is sleeved on the top outside of the two reset mechanisms, and the feeding mechanism moves up and down along the reset mechanism to realize the reset or clamping and feeding of the steel wire, and the feeding mechanism is connected with the driving mechanism.

2. A one-way wire feeding device according to claim 1, characterized in that The feeding mechanism includes a pressing piece and a wire clamping assembly arranged in a vertical manner; The pressing piece and the wire clamping assembly are respectively located between the two reset mechanisms; The pressing piece is buckled on the top of the wire clamping assembly, and two sides of the pressing piece are respectively located on the two sides of the wire clamping assembly towards and away from the driving mechanism, and the other two sides of the pressing piece are respectively mounted on the two reset mechanisms and move up and down along the reset mechanism; The side of the pressing piece towards the driving mechanism is connected with the driving mechanism, and the side of the pressing piece away from the driving mechanism is pressed against the wire clamping assembly; The two sides of the wire clamping assembly are respectively sleeved on the two reset mechanisms, and the wire clamping assembly moves downward along the reset mechanism to clamp and feed the steel wire under the pressing of the pressing piece, and the wire clamping assembly is reset and released from the clamping of the steel wire by the rebound force of the reset mechanism.

3. A one-way wire feeding device according to claim 2, characterized in that The pressing piece is in the form of a U-shaped structure with an opening downward; Two side walls of the U-shaped structure are respectively located on the two sides of the wire clamping assembly towards and away from the driving mechanism, and two end faces of the U-shaped structure respectively extend outward along the extension direction and are provided with connecting portions; The connecting portions are respectively sleeved on the top outside of the two reset mechanisms.

4. A one-way wire feeding device according to claim 2, characterized in that The wire clamping assembly includes a mounting seat; Two sides of the mounting seat are respectively sleeved on the two reset mechanisms, and the mounting seat is provided with a mounting cavity, and a first positioning groove is arranged at the center of the side of the mounting seat away from the driving mechanism; A positioning hole is arranged at the center of the top of the pressing piece, and the center of the side of the pressing piece away from the driving mechanism is respectively arranged in the second positioning groove; The second positioning groove is in the form of an L-shaped groove with an opening downward, one end of the second positioning groove is in communication with the positioning hole, and the other end of the second positioning groove is in communication with the outside downward, the second positioning groove is correspondingly arranged with the first positioning groove, and both are groove bodies penetrating along the front-rear direction; The mounting cavity is a penetrating cavity along the vertical direction of the mounting seat, and two clamping blocks are correspondingly arranged in the mounting cavity; The first positioning groove is vertically arranged along the mounting seat, and the first positioning groove is in communication with the mounting cavity; Two clamping blocks are respectively arranged on the two sides of the first positioning groove, and a driving rod is arranged between the two clamping blocks and the mounting cavity. The driving rod is vertically arranged on the mounting seat, one end of the driving rod is connected with the two clamping blocks respectively, and the other end of the driving rod is located outside the mounting seat on the side of the mounting seat away from the driving rod; the driving rod moves along the oblique upward or oblique downward direction of the mounting seat to drive the two clamping blocks to move synchronously, so that the gap on one side of the two clamping blocks increases or decreases, and the steel wire is loosened or clamped.

5. A one-way wire feeding device according to claim 4, characterized in that Two guide grooves are arranged on the side of the mounting seat corresponding to the driving mechanism; The two guide grooves on the same side are in an inverted eight structure and are arranged on the two sides of the first positioning groove respectively; The driving rod is vertically connected in the guide groove and slides along the guide groove.

6. A one-way wire feeding device according to claim 5, characterized in that The opposite surfaces of the mounting seat on the two sides of the reset mechanism are inclined surfaces, the inclination of the inclined surface matches the guide groove, and the opposite sides of the two clamping blocks slide along the inclined surface respectively.

7. A one-way wire feeding device according to claim 2, characterized in that The reset mechanism comprises a guide column; The guide column is arranged on one side of the driving mechanism in parallel, and a first spring and a second spring are arranged on the guide column from top to bottom; The first spring is located between the pressing piece and the wire clamping assembly, and the two ends of the first spring are connected with the pressing piece and the wire clamping assembly respectively; One end of the second spring is connected with the wire clamping assembly, and the other end of the second spring is installed at the bottom of the guide column.

8. A one-way wire feeding device according to claim 2, characterized in that The driving mechanism comprises a mounting frame, a guide wheel set arranged on the mounting frame, and a pull rope wound on the guide wheel set; The reset mechanism is installed on one side of the mounting frame; The guide wheel set is installed on the side of the mounting frame facing the reset mechanism, and the guide wheel set comprises a first guide wheel and a second guide wheel; The first guide wheel and the second guide wheel are arranged in parallel along the horizontal direction, the wheel axes of the first guide wheel and the second guide wheel are parallel, and the first guide wheel and the second guide wheel are installed on the mounting frame respectively; One end of the pull rope is located on the ground, and the other end of the pull rope is connected to the pressing piece after passing through the first guide wheel and the second guide wheel in sequence.

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