Parachute hanging and throwing mechanism of pipeline detector based on magnetic movement and use method thereof

Abstract

The present invention discloses a parachute hanging and throwing mechanism of a pipeline detector based on magnetic movement and a method for using the same. The mechanism comprises: an actuator, the actuator moves along the axial direction of a sealing cylinder, and is used to hang the tail ring of the parachute line and throw away the tail ring of the parachute line; an electromagnet is close to the end cover of the cylinder, and the magnetic field generated by the electromagnet passes through the end cover of the cylinder and acts on the permanent magnet of the actuator, so that the actuator is displaced; a non-throwing pin is used to hang the tail ring of the parachute line. The method for using the parachute hanging and throwing mechanism comprises: hanging the parachute and throwing the parachute using the parachute hanging and throwing mechanism. The present invention solves the problem that a large resistance needs to be overcome when the detector moves backward.

Description

Technical Field

[0001] The invention relates to the field of in-pipeline detectors, and in particular to a parachute hanging and throwing mechanism of an in-pipeline detector and a use method thereof. Background Art

[0002] The application of pipeline internal detection equipment in the field of pipeline network detection is becoming more and more extensive. The unpowered towed cable internal detector is one of the many types of internal detectors. The unpowered towed cable internal detector usually hangs a powered parachute. The style and working principle of the powered parachute are similar to those of a parachute. It also has a canopy and a parachute line. One end of the parachute line is tied to the canopy, and the other end is tied to the detector's hanging point, such as Figure 1 shown.

[0003] The power parachute is opened by the flushing of the pipeline fluid, which is the same as the opening principle of the parachute. When the parachute line drives the detector to move along the direction of the fluid, it is called the detector moving forward; when the detector needs to move backward, the operator on the ground will pull the composite cable towed behind the detector, that is, the umbilical cable. When the tension detected at the end of the umbilical cable is greater than the forward force provided by the power parachute, the detector will move backward. However, the use of such forward and backward methods has brought many troubles to the detection construction. For example, in order to make the detector have sufficient forward power, it is necessary to hang a larger area of ​​the power parachute canopy, or require the fluid in the pipeline to be tested to have a higher flow rate. In this way, when moving backward, the detector will encounter greater resistance.

[0004] At present, the conventional solution to the above problem is to drop the parachute or reduce the effective area of ​​the parachute during the recovery phase. Since these detectors are low-power detectors with very limited power supply capacity, dropping the parachute or reducing the effective area of ​​the parachute requires a large power output, which brings new problems to the detectors. Summary of the invention

[0005] The present invention provides a parachute hanging mechanism for a pipeline detector based on magnetic motion and a method for using the same. The present invention solves the problem that a large resistance needs to be overcome when the detector moves backwards. The details are described below:

[0006] A parachute hanging and throwing mechanism of a pipeline detector based on magnetic movement, the mechanism comprises: an actuator, the actuator moves along the axial direction of a sealing cylinder, and is used to hang the parachute line tail ring and throw away the parachute line tail ring; an electromagnet is close to the cylinder end cover, and the magnetic field generated by the electromagnet passes through the cylinder end cover and acts on the permanent magnet of the actuator, so that the actuator is displaced; and a non-throwing pin is used to hang the parachute line tail ring.

[0007] Among them, the non-ejection pin is installed on a special installation hole of the cylinder end cover, a second spring acts between the non-ejection pin and the cylinder end cover, and a second retaining ring is used to clamp the cylinder end cover; the non-ejection pin, the second spring, and the second retaining ring are installed on other components that do not move relative to the cylinder end cover.

[0008] Furthermore, the actuator comprises: an actuator disk, at least one ejectable pin, at least one permanent magnet, and at least one first spring.

[0009] The actuating disc is the main load-bearing structural part, supporting the permanent magnet and the ejectable pin. The actuating disc moves along the axis of the sealing tube. The ejectable pin is installed on the actuating disc to hang the tail ring of the parachute line. The permanent magnet is installed on the actuating disc to attract or repel the electromagnet, driving the actuating disc to move to the "hanging point" or "throwing point".

[0010] The two ends of the first spring act on the actuating disk and the throwable pin respectively, and the throwable pin performs elastic movement relative to the actuating disk.

[0011] Wherein, the non-throwing pin and the throwable pin both adopt a stepped shaft structure, a hook structure or a seesaw structure.

[0012] A method for using a parachute hanging and throwing mechanism of a pipeline detector based on magnetic movement, using the parachute hanging and throwing mechanism to hang a parachute, the method comprising the following steps:

[0013] When hanging an umbrella, the actuating disk is moved to the "hanging point" position under the action of magnetic force, and an external force is applied to the throwable pin, so that the throwable pin overcomes the action force of the first spring and moves a certain distance toward the "throwing point" position, thereby creating a space for the tail ring of the umbrella hanging line, and the throwable pin is pulled out toward the "throwing point" position, and the flipping direction creates enough space for the throwable pin to hang the umbrella line;

[0014] Put the tail ring of the parachute line on the throwable pin; remove the external force of the throwable pin, and the throwable pin will bounce back and hang on the tail ring of the parachute line;

[0015] Hang the tail loops of other parachute lines that are to be thrown away on the throwable pins;

[0016] Apply external force to the non-throwing pin, so that the non-throwing pin overcomes the action force of the second spring and moves, thereby creating space for the tail ring of the parachute line, and the non-throwing pin is pulled out in the direction of the shallow blind hole away from the end cover of the tube, and the non-throwing pin is flipped in a direction that enables the non-throwing pin to create enough space for the parachute line;

[0017] Put the tail ring of the parachute line on the no-throwing pin; remove the external force of the no-throwing pin, and the no-throwing pin will firmly hang the tail ring of the parachute line; hang other tail rings of the parachute line that will not be thrown away on the no-throwing pin.

[0018] A method for using a parachute hanging and throwing mechanism of a pipeline detector based on magnetic movement, using the parachute hanging and throwing mechanism to throw a parachute, the method comprising the following steps:

[0019] When the electromagnet is powered on, the actuating disk moves toward the "throwing point" position under the action of magnetic force, and at the same time drives the throwable pin to move toward the "throwing point" position;

[0020] As the throwable pin moves toward the "throwing point", the tail ring of the parachute line will not move with the throwable pin due to the tension of the parachute line, and the tail ring of the parachute line will slide out of the throwable pin, thereby realizing parachute throwing.

[0021] The beneficial effects of the technical solution provided by the present invention are:

[0022] 1. The present invention arranges the magnetic parts that interact with each other when throwing and hanging the umbrella inside and outside the sealed cavity respectively, so that the throwing and hanging of the umbrella will not bring the risk of leakage of the sealed cavity, and the anti-leakage ability is strong;

[0023] 2. The non-throwing pin is used to keep the tail ring of the parachute line that is not necessary to be thrown away always in a hanging state. Only the tail ring of the parachute line hanging on the throwable pin is thrown away. Under the premise of not affecting the beneficial effect of reducing the recovery resistance brought by throwing the parachute, the total friction caused by the throwing action is reduced, thereby reducing the electromagnet power required for throwing the parachute, and finally reducing the power supply burden of the detector;

[0024] 3. The present invention reduces the recovery resistance of the detector in the unpowered tow cable after the parachute is dropped, thereby reducing the recovery difficulty; it allows the pipeline to be tested to have more turns, thereby increasing the application range of this type of detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the power layout of the detector inside the unpowered tow cable;

[0026] Figure 2 This is a schematic diagram of the explosion of the parachute hanging mechanism;

[0027] Figure 3 It is a partial cross-sectional schematic diagram of the pin-throwing portion of the parachute throwing mechanism;

[0028] Figure 4 It is a partial cross-sectional schematic diagram of the parachute throwing mechanism without throwing the pin;

[0029] Figure 5 is a schematic diagram of the actuator;

[0030] Figure 6 It is a schematic diagram of the actuator disc at the hanging point and the throwing point;

[0031] Among them, A is a schematic diagram of the actuator disc at the hanging point position; B is a schematic diagram of the actuator disc at the throwing point position.

[0032] Figure 7 This is a schematic diagram of hanging a parachute line tail ring;

[0033] Figure 8 Schematic diagram of the manually pulled and unpulled disposable pin and the tail ring of the parachute line.

[0034] Among them, A is a schematic diagram of manually pulling out the disposable pin and hanging the tail ring of the parachute line; B is a schematic diagram of the disposable pin not being pulled out.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1: Paramotor canopy; 2: First functional cabin;

[0037] 3: Second functional cabin; 4: Parachute line;

[0038] 5: umbilical cable; 6: cable;

[0039] 7: Sealing cylinder; 8: Cylinder end cover;

[0040] 9: electromagnet; 10: actuator;

[0041] 10-1: Actuating disc; 10-2: Ejectable pin;

[0042] 10-3: permanent magnet; 10-4: first spring;

[0043] 10-5: first retaining ring; 10-6: screw;

[0044] 11: No pin ejection; 12: Second spring;

[0045] 13: Second retaining ring. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0047] In order to solve the problems existing in the background technology, two technical directions can be used for research. First, a mechanism can be designed to adjust the area of ​​the paramotor canopy. Second, the paramotor can be discarded before the detector moves backward. The content of the embodiment of the present invention is the second technical direction.

[0048] Example 1

[0049] The embodiment of the present invention provides a parachute hanging mechanism for a pipeline detector based on magnetic motion, see Figure 2-Figure 4 The parachute hanging and throwing mechanism includes: an actuator 10, an electromagnet 9, a sealing tube 7, a tube end cover 8, and a non-throwing pin 11.

[0050] The actuator 10 can move along the axial direction of the sealing tube 7. The actuator 10 is used to hang the tail ring of the umbrella line and throw away the tail ring of the umbrella line. The tail ring of the umbrella line here generally has two forms. The first is to tie the umbrella line at the end of the umbrella line to form a ring structure, and the ring structure can cover the disposable pin 10-2. Figure 3This form is adopted; the second form is to pre-make a part with an annular structure, which can cover the ejectable pin 10-2 or the non-ejectable pin 11, and then use the tail end of the umbrella line to tie, press or glue the part with an annular structure. The electromagnet 9 is tightly attached to the cylinder end cover 8. There are several schemes for the two to be tightly attached, for example: the electromagnet 9 can be glued to the cylinder end cover 8, Figure 2 , Figure 3 With this solution, other structural parts can be used to press the electromagnet 9, so that the electromagnet 9 is pressed on the cylinder end cover 8, or the electromagnet 9 can be directly connected to the cylinder end cover 8 with screws or rivets. In short, the magnetic field generated by the electromagnet 9 will pass through the cylinder end cover 8 and act on the permanent magnet of the actuator 10, thereby pushing and pulling the actuator 10 to cause the actuator 10 to move. The non-throwing pin 11 is used to hang the tail ring of the umbrella line. The tail ring of the umbrella line hung by the non-throwing pin 11 cannot be thrown away by the detector during the detection construction process.

[0051] The sealing cylinder 7, cylinder end cover 8, umbilical cable 5, and cable 6 form a sealed cavity, and other hardware, electromagnet 9, etc. are placed in the cavity, and the fluid in the measured pipeline cannot enter the cavity. Conventional sealing methods are used in various sealing links.

[0052] Among them, the non-throwing pin 11 is installed on the special installation hole of the cylinder end cover 8, and the second spring 12 acts between the non-throwing pin 11 and the cylinder end cover 8, so that the non-throwing pin 11 can make elastic movement relative to the cylinder end cover 8. In order to prevent the non-throwing pin 11 and the second spring 12 from not falling out after being installed on the cylinder end cover 8, the second retaining ring 13 is used to clamp on the cylinder end cover 8. The non-throwing pin 11, the second spring 12, and the second retaining ring 13 can also be installed on other parts that do not move relative to the cylinder end cover 8, such as: the sealing cylinder 7. During the parachute throwing process of the actuator 10, since the actuating disc 10-1 and the throwable pin 10-2 are slightly tilted, friction will be generated between the actuating disc 10-1 and the cylinder end cover 8, between the permanent magnet 10-3 and the cylinder end cover 8, between the actuating disc 10-1 and the throwable pin 10-2, and between the throwable pin 10-2 and the shallow blind hole of the cylinder end cover 8. If the friction is too large, a larger magnetic force is required. Reducing the number of parachute line tail loops to be disengaged by the actuator 10, that is, appropriately setting a certain number of non-throwing pins 11, is beneficial to reducing power output and reducing the power supply burden of the detector. It has been verified by experiments that when 1 / 3 of the parachute line tail loops (that is, the total number of parachute line tail loops) on the power parachute are thrown away, the power generated by the power parachute is completely lost, so the parachute line tail loops hung by the non-throwing pins 11 will not lose the effect of reducing the recovery resistance or will lose a very small effect of reducing the recovery resistance. Figure 2-Figure 5The non-throwing pin 11 in the embodiment adopts a stepped shaft structure, so it can make a linear motion relative to the barrel end cover 8, and the different positions reached by the linear motion can realize the manual hanging and throwing of the parachute line tail ring. The non-throwing pin 11 can also adopt other structures such as hook structures and seesaw structures. When the non-throwing pin 11 with a hook structure or a seesaw structure is adopted, it will make a flipping motion relative to the barrel end cover 8, and the different positions reached by the flipping motion can also realize the manual hanging and throwing of the parachute line tail ring.

[0053] The actuator 10 includes: an actuator disk 10-1, at least one ejectable pin 10-2, at least one permanent magnet 10-3, and at least one first spring 10-4. The actuator disk 10-1 is the main load-bearing structural component of the actuator 10, which supports the permanent magnet 10-3, the ejectable pin 10-2 and other parts. The actuator disk 10-1 can move along the axis direction of the sealing cylinder, see Figure 6 , including 2 extreme motion positions, one of which is called the "hanging point" and the other is called the "throwing point".

[0054] The throwable pin 10-2 is installed on the actuator disk 10-1, and its function is to hang the tail ring of the parachute line, thereby pulling the paramotor canopy, or to throw away the tail ring of the parachute line, thereby throwing away the paramotor. Figure 2-Figure 5 The throwable pin 10-2 in the embodiment adopts a stepped shaft structure, so it can make a linear motion relative to the actuating disk 10-1, and the different positions reached by the linear motion can realize the hanging and throwing of the tail ring of the parachute line. The throwable pin 10-2 can also adopt other structures such as a hook-shaped structure or a seesaw-shaped structure. When the throwable pin 10-2 with a hook-shaped structure or a seesaw-shaped structure is adopted, it will make a flipping motion relative to the actuating disk 10-1, and the different positions reached by the flipping motion can also realize the hanging and throwing of the tail ring of the parachute line. The permanent magnet 10-3 is installed on the actuating disk 10-1, and its function is to attract or repel the electromagnet 9, thereby driving the actuating disk 10-1 to move to the "hanging point" or "throwing point". The two ends of the first spring 10-4 act on the actuating disk 10-1 and the throwable pin 10-2 respectively, so that the throwable pin 10-2 can make an elastic motion relative to the actuating disk 10-1. Figure 2-Figure 4 The first spring in the method is a linear pressure spring, and a tension spring or a worm spring may also be used. In particular, when the disposable pin structure is a hook structure or a seesaw structure, the first spring may adopt a tension spring, a worm spring or the like, and the embodiment of the present invention does not impose any limitation on this.

[0055] To sum up, the embodiment of the present invention arranges the magnetic parts that interact with each other when throwing and hanging the umbrella inside and outside the sealed cavity respectively, so that the action of throwing and hanging the umbrella will not bring the risk of leakage of the sealed cavity, and the leakage prevention ability is strong; only part of the tail ring of the umbrella line is thrown away, while achieving the effect of throwing the umbrella, the total friction force of the umbrella is reduced, thereby reducing the electromagnet power required for throwing the umbrella, and finally reducing the power supply burden of the detector, meeting various needs in practical applications.

[0056] Example 2

[0057] An embodiment of the present invention provides a method for using a parachute hanging and throwing mechanism of a pipeline detector based on magnetic motion, wherein hanging a parachute using the parachute hanging and throwing mechanism comprises the following steps:

[0058] 101: When hanging the umbrella, the actuator disc 10-1 moves to the "hanging point" position under the action of magnetic force, see Figure 6 ;

[0059] 102: Apply external force to the throwable pin 10-2, so that the throwable pin 10-2 overcomes the force of the first spring 10-4 and moves a distance toward the "throwing point" position, creating enough space for the tail ring of the parachute line, see Figure 7 ,exist Figure 2-Figure 5 In the scheme shown, the throwable pin 10-2 should be pulled out toward the "throwing point" position. If a throwable pin 10-2 with a hook structure or a seesaw structure is used, the throwable pin 10-2 should be flipped in the direction that enables the throwable pin 10-2 to create enough space for the parachute line.

[0060] 103: Put the tail ring of the parachute line on the throwable pin 10-2;

[0061] 104: Remove the external force on the throwable pin 10-2, the throwable pin 10-2 rebounds, and the throwable pin 10-2 firmly hangs on the tail ring of the parachute line;

[0062] 105: Repeat steps 102, 103 and 104 until the tail rings of other parachute lines to be thrown away are hung on the throwable pin 10-2;

[0063] 106: Apply external force to the non-throwing pin 11, so that the non-throwing pin 11 overcomes the force of the second spring 12 and moves, creating enough space for the tail ring of the parachute line. Figure 2-Figure 5 In the scheme shown, the non-throwing pin 11 should be pulled out in the direction away from the shallow blind hole of the tube end cover 8. If a non-throwing pin 11 with a hook-shaped structure or a seesaw-shaped structure is used, the non-throwing pin 11 should be turned over in the direction that enables the non-throwing pin 11 to create enough space for hanging parachute lines.

[0064] 107: Put the tail ring of the parachute line on the non-throwing pin 11;

[0065] 108: Remove the external force of the non-throwing pin 11, the non-throwing pin 11 rebounds, and the non-throwing pin 11 firmly hangs on the tail ring of the parachute line;

[0066] 109: Repeat steps 106, 107 and 108 to hang other parachute line tail rings that will not be thrown away on the non-throwing pin 11.

[0067] Example 3

[0068] An embodiment of the present invention provides a method for using a parachute hanging and throwing mechanism, wherein throwing a parachute using the parachute hanging and throwing mechanism comprises the following steps:

[0069] 201: The electromagnet 9 is powered on. Under the action of magnetic force, the actuator disc 10-1 moves toward the "throwing point" position, and at the same time drives the throwable pin 10-2 to move toward the "throwing point" position, see Figure 6 ;

[0070] 202: As the throwable pin 10-2 moves toward the "throwing point" position, the tail ring of the parachute line will not move with the throwable pin 10-2 due to the tension of the parachute line, and then the tail ring of the parachute line will move out of the throwable pin 10-2, thereby achieving parachute throwing.

[0071] Example 4

[0072] Combine the following Figure 1-Figure 7 The schemes in Examples 1 and 2 are further introduced as described below:

[0073] First, the assembly relationship of the parts of the parachute hanging and throwing mechanism is introduced:

[0074] The tail end of the parachute line 4 is knotted and a line loop is tied to form a parachute line tail loop; the cable 6 and the sealing tube 7 are plugged together, and the mating surfaces are sealed; the umbilical cable 5 and the tube end cover 8 are plugged together, and the mating surfaces are sealed; the sealing tube 7 and the tube end cover 8 are plugged together, that is, the mating surfaces of the two are also sealed; the electromagnet 9 is bonded to the tube end cover 8, and the tube end cover 8 is provided with a cylindrical slide (that is, the position where the pin head is inserted), so that the permanent magnet 10-3 of the actuator 10 can slide in the cylindrical slide; the tube end cover 8 is also provided with a shallow blind hole, and the disposable pin 10-2 of the actuator 10 can be inserted into this shallow blind hole; the permanent magnet 10-3 can also be fixed by screws 10-6 To the actuator disk 10-1; the cylinder end cover 8 is also provided with a mounting hole for installing the non-throwing pin 11, the non-throwing pin 11, the second spring 12, and the second retaining ring 13 are sequentially installed into the above mounting holes, and the second retaining ring 13 is stuck in the mounting hole, and the non-throwing pin 11 can make elastic movement relative to the cylinder end cover 8 without falling out; the actuator disk 10-1 is provided with a mounting hole, and the throwable pin 10-2 presses the first spring 10-4 and penetrates into the mounting hole of the actuator disk 10-1. In order to prevent the throwable pin 10-2 from falling out of the mounting hole, the tail of the throwable pin 10-2 is provided with a first retaining ring 10-5, so that the throwable pin 10-2 can be retracted on the actuator disk 10-1 without falling out.

[0075] The above-mentioned sealing method can be fixed by screwing, riveting or bonding to prevent disengagement. The specific form is selected according to the needs of actual application, and the embodiment of the present invention does not limit this.

[0076] Here is how to use the parachute hanging mechanism:

[0077] 1. How to use the hanging umbrella

[0078] 1) When hanging the umbrella, the permanent magnet 10-3 is attracted to the electromagnet 9, then the actuating disc 10-1 will be in the "hanging point" position, and the throwable pin 10-2 will also be automatically inserted into the shallow blind hole of the cylinder end cover 8;

[0079] 2) Pull out a disposable pin 10-2 from the shallow blind hole by hand or with a tool. Due to the magnetic field attraction, the actuator disk 10-1 will not move, and the first spring 10-4 will be further compressed;

[0080] 3) After the throwable pin 10-2 is a certain distance away from the shallow blind hole, a line tail ring of a parachute line 4 to be thrown away is put on the throwable pin 10-2;

[0081] 4) Release the disposable pin 10-2, which will automatically reinsert into the shallow blind hole of the tube end cover 8. In this state, even if the umbrella line 4 is pulled, the tail ring of the umbrella line cannot be separated from the disposable pin 10-2. At this time, the umbrella line 4 completes the umbrella hanging action;

[0082] 5) Hang up the other parachute lines 4 that need to be thrown away according to the above steps 1)-4);

[0083] 6) Pull out one non-throwing pin 11 from the shallow blind hole by hand or with a tool, and the second spring 12 will be further compressed;

[0084] 7) After the non-throwing pin 11 is a certain distance away from the shallow blind hole, a line tail ring of a parachute line 4 that will not be thrown away is put on the non-throwing pin 11;

[0085] 8) Release the non-throwing pin 11, which will automatically reinsert into the shallow blind hole of the tube end cover 8. In this state, even if the umbrella line 4 is pulled, the tail ring of the umbrella line cannot be separated from the non-throwing pin 11. At this time, the umbrella line 4 completes the umbrella hanging action;

[0086] 9) Hang the other parachute lines 4 that will not be thrown away according to the above steps 6)-8).

[0087] 2. How to use the parachute

[0088] 1) When the parachute is thrown, the detector is already in the fluid, the paramotor canopy 1 is opened, and the permanent magnet 10-3 and the electromagnet 9 repel each other;

[0089] 2) The actuating disc 10-1 moves toward the "throwing point" position, the actuating disc 10-1 pushes the first retaining ring 10-5, the first retaining ring 10-5 pulls the throwable pin 10-2, and the throwable pin 10-2 leaves the shallow blind hole;

[0090] 3) The parachute line 4 is subjected to the continuous pulling force of the powered parachute canopy 1, and the tail ring of the parachute line will not move synchronously with the disposable pin 10-2, and will then be removed from the disposable pin 10-2, and the parachute is completed. Since there is no traction force of the powered parachute canopy 1, it will be very labor-saving when retrieving the detector and dragging the umbilical cable 5.

[0091] Among them, the above Figure 2-5 When the embodiment in the embodiment adopts magnetic force as the attraction, the actuator disk 10-1 is in the "hanging point" position, and the electromagnet 9 and the permanent magnet 10-3 can firmly hang the tail ring of the umbrella line when they are attracted to each other, and the tail ring of the umbrella line is thrown away when the electromagnet 9 and the permanent magnet 10-3 repel each other. However, by adjusting the structure of parts and the matching direction between parts, it is also possible to hang the tail ring of the umbrella line when they repel each other, and throw away the tail ring of the umbrella line when they attract each other.

[0092] The embodiment of the present invention preferably adopts a part in the form of a stepped shaft as the disposable pin 10-2, and cooperates with the first spring 10-4 in compression form. By changing the cooperation relationship of each part, a part with a hook structure or a part with a seesaw structure is adopted as the disposable pin 10-2, and cooperates with the first spring 10-4 in tension form or snail form to form a stepped shaft disposable pin.

[0093] In summary, the embodiment of the present invention reduces the recovery resistance of the detector in the unpowered towed cable after the parachute is dropped through the above-mentioned design, thereby reducing the difficulty of recovery; at the same time, since the recovery resistance is small, the measured pipeline is allowed to have more turns, which increases the application range of the detector in the towed cable.

[0094] Unless otherwise specified, the models of the components in the embodiments of the present invention are not limited, and any device that can perform the above functions may be used.

[0095] Those skilled in the art will appreciate that the accompanying drawing is only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A parachute hanging and throwing mechanism for a pipeline detector based on magnetic motion, characterized in that: The mechanism comprises: an actuator, The actuator moves along the axial direction of the sealing cylinder and is used to hang the tail ring of the umbrella line and throw away the tail ring of the umbrella line. The electromagnet is close to the end cover of the cylinder. The magnetic field generated by the electromagnet passes through the end cover of the cylinder and acts on the permanent magnet of the actuator, causing the actuator to move; the non-throwing pin is used to hang the tail ring of the umbrella line; The non-throwing pin is installed on a special installation hole of the cylinder end cover, a second spring acts between the non-throwing pin and the cylinder end cover, and a second retaining ring is used to clamp the cylinder end cover; the non-throwing pin, the second spring, and the second retaining ring are installed on other parts that do not move relative to the cylinder end cover; The actuator comprises: an actuator disk, at least one ejectable pin, at least one permanent magnet, and at least one first spring. The actuating disc is the main load-bearing structural part, supporting the permanent magnet and the ejectable pin. The actuating disc moves along the axis of the sealing tube. The ejectable pin is installed on the actuating disc to hang the tail ring of the parachute line. The permanent magnet is installed on the actuating disc to attract or repel the electromagnet, driving the actuating disc to move to the "hanging point" or "throwing point". The two ends of the first spring act on the actuating disk and the throwable pin respectively, and the throwable pin performs elastic movement relative to the actuating disk.

2. The parachute hanging and throwing mechanism of the pipeline detector based on magnetic movement according to claim 1 is characterized in that: The non-throwing pin and the throwable pin both adopt a stepped shaft structure, a hook structure or a seesaw structure.

3. A method for using the parachute hanging mechanism of the pipeline detector based on magnetic movement according to claim 1, characterized in that: Using a parachute hanging and throwing mechanism to hang a parachute, the method comprises the following steps: When hanging an umbrella, the actuator disk is moved to the "hanging point" position under the action of magnetic force, and an external force is applied to the throwable pin, so that the throwable pin overcomes the action of the first spring and moves a certain distance toward the "throwing point" position, thereby creating space for the tail ring of the umbrella hanging line, and the throwable pin is pulled out toward the "throwing point" position, and the flipping direction creates enough space for the throwable pin to hang the umbrella line; Put the tail ring of the parachute line on the throwable pin; remove the external force of the throwable pin, and the throwable pin will bounce back and hang on the tail ring of the parachute line; Hang the tail loops of other parachute lines that are to be thrown away on the throwable pins; Apply external force to the non-throwing pin, so that the non-throwing pin overcomes the action force of the second spring and moves, thereby creating space for the tail ring of the parachute line, and the non-throwing pin is pulled out in the direction of the shallow blind hole away from the end cover of the tube, and the non-throwing pin is flipped in a direction that enables the non-throwing pin to create enough space for the parachute line; Put the tail ring of the parachute line on the no-throwing pin; remove the external force of the no-throwing pin, and the no-throwing pin will firmly hang the tail ring of the parachute line; hang other tail rings of the parachute line that will not be thrown away on the no-throwing pin.

4. A method for using the parachute hanging mechanism of the pipeline detector based on magnetic movement according to claim 1, characterized in that: Using a parachute hanging and throwing mechanism to throw a parachute, the method comprises the following steps: When the electromagnet is powered on, the actuator disk moves toward the "throwing point" position under the action of magnetic force, and at the same time drives the throwable pin to move toward the "throwing point" position; As the throwable pin moves toward the "throwing point", the tail ring of the parachute line will not move with the throwable pin due to the tension of the parachute line, and the tail ring of the parachute line will slide out of the throwable pin, thus realizing the parachute throwing.

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