Large-depth double-drum logging winch

Abstract

According to the large-depth double-roller logging winch, a bearing cable is wound around a cable roller assembly, a cable connector of the bearing cable is sequentially wound around a cable arrangement device and a guide pulley assembly to be connected with a sensor assembly, a cable roller rotates to change the wire outlet amount of the bearing cable, and then the sensor assembly is lifted or lowered. The cable arranging device is arranged in front of the cable roller assembly and used for guiding the bearing cable to be stably and orderly wound and released on the cable roller assembly. The guide pulley assembly is arranged above the cable roller assembly and used for guiding the bearing cable. The sensor assembly is used to perform well wall measurements. The two bearing cables are connected to the two ends of the fixing frame, stable lifting of the sensor in a large depth range is guaranteed by synchronously controlling take-up and take-out of the two bearing cables, the structure of a winch is greatly simplified, and the space of the winch is saved. And the torsion releaser is arranged to release the torsion, so that the stability of the sensor is ensured.

Description

Technical Field

[0001] The invention belongs to the field of building testing, and in particular relates to a deep double-drum logging winch. Background Art

[0002] The borehole detector is an important instrument used to inspect the verticality of boreholes (wells, slots). It is widely used in the inspection of holes (wells, slots) excavated in major construction projects such as high-rise buildings, large bridges, and urban rail transit. The method of using the borehole detector is to use the logging winch to lower the sensor into the borehole (well, slot) at a certain speed, and use the sensor to smoothly rise and fall in the vertical direction of the borehole (well, slot) to obtain the well wall information in real time, and then fit to form the verticality profile line of the entire borehole (well, slot). During the entire measurement process, the logging winch plays an important role in the smooth lifting of the sensor and is an important instrument component for accurately completing the well wall measurement task.

[0003] The depth of the winches widely used in the market is generally no more than 150 meters. However, with the continuous advancement of infrastructure engineering technology and the wide expansion of application fields, the drilling depth is getting deeper and deeper. The existing mature logging winch technology can no longer meet the growing demand for measurement depth.

[0004] Common logging winches include single-drum winches, double-drum winches, and triple-drum winches. There are two types of single-drum winches. One is to use a load-bearing cable that combines a wire rope and a cable to connect the sensor, which can not only achieve the lifting and lowering of the sensor, but also communicate in real time; the other is to use a steel cable to suspend the sensor for application scenarios that do not require real-time communication. The traditional double-drum winch separates the cable and the wire rope, using one drum to wind the wire rope for lifting and lowering the sensor, and one drum to wind the cable for communication. However, since the wire rope is easily rotated by torque when it is wound on the drum and released, the sensor will rotate due to torque when a single wire rope is used to suspend the sensor, resulting in an unstable lifting posture and affecting the accuracy of the measurement results. In order to solve this problem, the three-drum winch design uses two wire ropes to suspend the sensor and one cable for communication. Two wire ropes and one cable are wound on the drums respectively, and the three drums are controlled by the motor to rotate synchronously to achieve smooth lifting and lowering of the sensor. In order to achieve effective synchronization, this method has high requirements on the proportional size of the three drums and the motor control strategy. All three drums adopt a single-layer winding method, that is, the cable and wire rope are only wound in one layer on each drum. This limits the length of the cable that can be wound to a certain extent, thereby affecting the logging depth. Summary of the invention

[0005] The technical purpose of the present invention is to provide a large-depth double-drum logging winch to solve the problem in the prior art that in order to increase the depth of the well exploration, the overall size of the winch becomes larger, which brings great inconvenience to transportation, handling at the construction site and actual operation.

[0006] To solve the above problems, the technical solution of the present invention is:

[0007] A deep double-drum logging winch, comprising:

[0008] A winch frame, and a cable drum assembly, a cable arranger, a guide pulley assembly, a sensor assembly and a load-bearing cable installed on the winch frame;

[0009] The load-bearing cable is coiled on the cable drum assembly, the cable connector of the load-bearing cable is connected to the sensor assembly in turn around the cable arranger and the guide pulley assembly, and the cable drum assembly is configured to rotate itself to change the output of the load-bearing cable, thereby raising or lowering the sensor assembly;

[0010] The cable arranger is arranged in front of the cable drum assembly and is configured to guide the load-bearing cable to be wound and released on the cable drum assembly smoothly and orderly;

[0011] The guide pulley assembly is disposed above the cable drum assembly and is configured to guide the load-bearing cable;

[0012] The sensor assembly is configured to perform wellbore measurements.

[0013] Wherein, the cable drum assembly comprises a rotating shaft, a first cable drum and a second cable drum;

[0014] The first cable drum and the second cable drum have the same size and the same processing technology, and are both arranged on the rotating shaft. The first cable drum and the second cable drum realize synchronous rotation under the drive of the rotating shaft.

[0015] Further preferably, a rotating motor is provided, which is mounted on the winch frame, and the output of the rotating motor is connected to the rotating shaft and is configured to drive the rotating shaft to rotate.

[0016] There are two cable arrangers, which are respectively wound around the corresponding load-bearing cables of the cable drums. The load-bearing cables are connected to the guide pulley assembly through the bottom of the cable arranger after exiting from the cable drum.

[0017] During the rotation of the cable drum assembly, the cable arranger moves left and right along with the corresponding cable drum, and the groove of the cable arranger remains parallel to the wire groove on the corresponding cable drum during the movement.

[0018] Wherein, the guide pulley assembly comprises a first guide pulley group and a second guide pulley group;

[0019] The first guide pulley block is arranged at the front upper part of the cable drum assembly. The first guide pulley block is provided with two guide pulleys, which are arranged on the left and right sides respectively to receive the load-bearing cables outputted by the corresponding cable arranger;

[0020] The second guide pulley block is arranged at the upper rear of the cable drum assembly. The second guide pulley block is provided with two guide pulleys, which are arranged on the left and right sides respectively, and receive the load-bearing cables output by the guide pulleys corresponding to the first guide pulley block.

[0021] Specifically, the sensor assembly includes a fixing frame and a sensor;

[0022] The fixing frame is arranged below the second guide pulley block, and the load-bearing cables outputted by the two guide pulleys of the second guide pulley block are respectively connected to the two ends of the fixing frame;

[0023] The sensor is connected to the middle of the fixing frame and is located below the fixing frame.

[0024] Further preferably, torque releasers are provided at both ends of the fixing frame, and the load-bearing cables output by the two guide pulleys of the second guide pulley group are respectively connected to the corresponding torque releasers, and the torque releasers are configured to release the torque of the load-bearing cables.

[0025] Wherein, the inner diameter and drum length of the first cable drum and the second cable drum are designed and adjusted based on the maximum depth of the large-depth double-drum logging winch;

[0026] The spacing between the same group of guide pulleys in the guide pulley assembly is adjusted based on the maximum depth of the large-depth double-drum logging winch.

[0027] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0028] The present invention uses two load-bearing cables connected to the two ends of the fixed frame, and ensures the smooth lifting and lowering of the sensor through synchronous control. At the same time, compared with the three-drum winch, one drum is reduced, which greatly simplifies the winch structure and saves winch space.

[0029] The present invention can increase the available cable length by means of multi-layer winding without increasing the drum size, so that the hanging depth of the sensor is no longer limited by the winch size.

[0030] The present invention uses two load-bearing cables to suspend the sensor, ensuring that the torque generated by the rotation of the cables is not transmitted to the sensor, thereby ensuring the stability of the sensor's posture. The stability of the sensor's posture is a necessary condition for such detection equipment.

[0031] The present invention uses two load-bearing cables, which can not only meet the load-bearing requirements of the sensor, but also solve the power supply of the sensor, as well as the communication signals for sending data to the ground unit and receiving instructions from the ground control equipment. It can meet the power supply and communication requirements of intelligent sensors.

[0032] The inner diameter and the length of the winch drum proposed by the present invention can be adjusted according to the maximum depth of the winch. At the same time, the spacing between the guide pulleys in the same group can be adjusted according to the maximum depth of the winch, which can be used for drilling detection with large depth and large aperture, as well as drilling detection with small depth and small aperture. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0034] Figure 1 It is a front schematic diagram of the interior of a deep-depth double-drum logging winch of the present invention;

[0035] Figure 2 It is a side view of a deep-depth double-drum logging winch of the present invention;

[0036] Figure 3 The figure is a top view of a deep-depth double-drum logging winch of the present invention.

[0037] Description of Reference Numerals

[0038] 1: First cable drum; 2: Second cable drum; 3: Cable arranger; 4: Guide pulley; 5: Torque releaser; 6: Fixed bracket; 7: Sensor; 8: Winch frame. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0040] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0041] The advantages and features of the present invention will become more apparent from the following description and claims.

[0042] Example

[0043] See also Figures 1 to 3 This embodiment provides a deep double-drum logging winch, which mainly includes: a winch frame 8, and a cable drum assembly, a cable arranger 3, a guide pulley assembly, a sensor assembly and a load-bearing cable installed on the winch frame 8. Figure 2 and Figure 3 As can be known, the winch frame 8 is a metal frame. The winch frame 8 has two cross beams for supporting and fixing in the middle, and two vertical beams for supporting and fixing on both sides.

[0044] Among them, the load-bearing cable is wound on the cable drum assembly in a multi-layer arrangement, which effectively saves the space occupied by the cable. The available cable length is no longer limited by the size of the winch, that is, a smaller winch can be used to achieve deep borehole (well, groove) measurement, which can meet a wider range of engineering construction needs and is convenient for on-site use. The cable connector of the load-bearing cable is connected to the sensor assembly in turn by the cable winding device 3 and the guide pulley assembly. The cable drum assembly is configured to rotate itself to change the output of the load-bearing cable, thereby lifting or lowering the sensor assembly. The load-bearing cable here can be an ordinary cable with load-bearing capacity, or it can be a steel wire (or stainless steel wire, etc.) armored cable. The load-bearing cable can not only bear gravity to drive the sensor 7 to rise and fall, but also can be used for communication. Since the load-bearing cable itself will also rotate, the load-bearing cables used in this embodiment are two cables with opposite winding directions, so that the torque generated by the self-rotation of the two cables can be offset as much as possible, reducing the force on the sensor 7.

[0045] Specifically, the cable drum assembly includes a rotating shaft, a first cable drum 1, a second cable drum 2 and a rotating motor. The first cable drum 1 and the second cable drum 2 are both installed on the rotating shaft. The first cable drum 1 and the second cable drum 2 are driven by the rotating shaft to achieve synchronous rotation. The two cable drums have the same size and the same processing technology. The rotating motor is installed on the winch frame 8, and the output of the rotating motor is connected to the rotating shaft, thereby driving the rotating shaft to rotate. Among them, the inner diameter and drum length of the first cable drum 1 and the second cable drum 2 are designed and adjusted based on the maximum depth of the large-depth double-drum logging winch.

[0046] From the perspective of spatial arrangement, the cable arranger 3 is arranged in front of the cable drum assembly to guide the load-bearing cable to be wound and released smoothly and orderly on the cable drum assembly. Among them, there are two cable arrangers 3, which are respectively wound around the load-bearing cables of the corresponding cable drums. After the load-bearing cables are discharged from the cable drums, they are connected to the guide pulley assembly through the bottom of the cable arranger 3. The first cable drum 1 and the second cable drum 2 are driven to rotate synchronously by the rotation of the rotating motor. During the rotation, the cable arranger 3 can move left and right with the rotation of the drum to ensure that the groove of the cable arranger 3 remains parallel to the wire groove on the cable drum, ensuring that the cable drum discharges and retracts neatly and smoothly, thereby driving the sensor 7 to rise and fall smoothly.

[0047] From the perspective of spatial arrangement, the guide pulley assembly is arranged above the cable drum assembly to guide the load-bearing cable. The parallel and synchronous operation of the two load-bearing cables is realized by rotating the motor control and the guide pulley 4, thereby achieving the purpose of smooth lifting and lowering of the sensor 7. Specifically, the guide pulley assembly includes a first guide pulley group and a second guide pulley group. The first guide pulley group is arranged at the front upper part of the cable drum assembly. The first guide pulley group is provided with a total of 2 guide pulleys 4, which are arranged on the left and right sides, respectively receiving the load-bearing cables output by the corresponding cable arranger 3. The second guide pulley group is arranged at the rear upper part of the cable drum assembly. The second guide pulley group is provided with a total of 2 guide pulleys 4, which are arranged on the left and right sides, respectively receiving the load-bearing cables output by the guide pulleys of the corresponding first guide pulley group. Among them, the spacing between the guide pulleys of the same group in the guide pulley assembly is adjusted based on the maximum depth of the large-depth double-drum logging winch.

[0048] Specifically, the sensor assembly includes a fixing frame 6 and a sensor 7. The fixing frame 6 is arranged below the second guide pulley group, and the load-bearing cables output by the two guide pulleys 4 of the second guide pulley group are respectively connected to the two ends of the fixing frame 6. The sensor 7 is connected to the middle of the fixing frame 6 and is located below the fixing frame 6. Since it is impossible to completely match the two load-bearing cables to offset the torque generated by each during processing, preferably, this embodiment further configures a torque releaser 5 at one end of the load-bearing cable close to the sensor 7, which is specifically arranged at the two ends of the fixing frame 6. The torque releaser 5 is used to release the torque of the load-bearing cable to ensure that the torque of the two load-bearing cables will not be transmitted to the sensor 7, thereby ensuring the stability of the sensor 7.

[0049] Preferably, in addition to being used for raising and lowering the sensor 7 when measuring the verticality of a borehole (well, slot), this embodiment can also be used for various acoustic, optical, electrical, and magnetic sensor probes that need to be suspended in the wellbore for observation, as well as other objects that need to be kept steadily raised and lowered.

[0050] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A deep double-drum logging winch, characterized in that: include: A winch frame, and a cable drum assembly, a cable arranger, a guide pulley assembly, a sensor assembly and a load-bearing cable installed on the winch frame; The load-bearing cable is wound on the cable drum assembly, and the cable connector of the load-bearing cable is connected to the sensor assembly in turn around the cable arranger and the guide pulley assembly, and the cable drum assembly is configured to rotate itself to change the output amount of the load-bearing cable, thereby lifting or lowering the sensor assembly; The cable arranger is arranged in front of the cable drum assembly and is configured to guide the load-bearing cable to be wound and released on the cable drum assembly smoothly and orderly; The guide pulley assembly is disposed above the cable drum assembly and is configured to guide the load-bearing cable; The sensor assembly is configured to perform wellbore measurements.

2. The deep-depth double-drum logging winch according to claim 1 is characterized in that: The cable drum assembly includes a rotating shaft, a first cable drum and a second cable drum; The first cable drum and the second cable drum have the same size and the same processing technology, and are both passed through the rotating shaft. The first cable drum and the second cable drum are driven by the rotating shaft to achieve synchronous rotation.

3. The deep-depth double-drum logging winch according to claim 2 is characterized in that: A rotating motor is also provided, which is mounted on the winch frame. The output of the rotating motor is connected to the rotating shaft and is configured to drive the rotating shaft to rotate.

4. The deep-depth double-drum logging winch according to claim 2, characterized in that: There are two cable arrangers in total, which are respectively wound around the load-bearing cables of the corresponding cable drums. After the load-bearing cables are discharged from the cable drums, they are connected to the guide pulley assembly through the bottom of the cable arranger. During the rotation of the cable drum assembly, the cable arranger moves left and right along with the rotation of the corresponding cable drum, and the groove of the cable arranger remains parallel to the wire groove on the corresponding cable drum during the movement.

5. The deep-depth double-drum logging winch according to claim 4 is characterized in that: The guide pulley assembly comprises a first guide pulley group and a second guide pulley group; The first guide pulley block is arranged at the front upper part of the cable drum assembly. The first guide pulley block is provided with two guide pulleys, which are arranged at the left and right sides respectively, and receive the load-bearing cables outputted by the corresponding cable arranger; The second guide pulley block is arranged at the upper rear of the cable drum assembly. The second guide pulley block is provided with two guide pulleys, which are arranged on the left and right sides respectively, and receive the load-bearing cables output by the guide pulleys corresponding to the first guide pulley block.

6. The deep-depth double-drum logging winch according to claim 5, characterized in that: The sensor assembly includes a fixing frame and a sensor; The fixing frame is arranged below the second guide pulley block, and the load-bearing cables outputted from the two guide pulleys of the second guide pulley block are respectively connected to two ends of the fixing frame; The sensor is connected to the middle of the fixing frame and is located below the fixing frame.

7. The deep-depth double-drum logging winch according to claim 6, characterized in that: Torque releasers are also provided at both ends of the fixing frame, and the load-bearing cables output by the two guide pulleys of the second guide pulley group are respectively connected to the corresponding torque releasers, and the torque releasers are configured to release the torque of the load-bearing cables.

8. The deep-depth double-drum logging winch according to claim 5, characterized in that: The inner diameters and drum lengths of the first cable drum and the second cable drum are designed and adjusted based on the maximum depth of the large-depth double-drum logging winch; The spacing between the same group of guide pulleys in the guide pulley assembly is adjusted based on the maximum depth of the large-depth double-drum logging winch.

Images