CN107763367B - Spiral driving centrifugal mechanical self-adaptive speed regulating device - Google Patents
Spiral driving centrifugal mechanical self-adaptive speed regulating device Download PDFInfo
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- CN107763367B CN107763367B CN201711135041.1A CN201711135041A CN107763367B CN 107763367 B CN107763367 B CN 107763367B CN 201711135041 A CN201711135041 A CN 201711135041A CN 107763367 B CN107763367 B CN 107763367B
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- base body
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- speed regulating
- cylindrical structure
- regulating mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/40—Constructional aspects of the body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Centrifugal Separators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a screw drive centrifugal mechanical self-adaptation speed adjusting device belongs to self-adaptation speed adjusting technical field, and aim at solves the structure complicacy that exists among the prior art, the problem that power consumption is big. The spiral driving centrifugal mechanical self-adaptive speed regulating device of the invention comprises: a cylindrical base body having a hollow interior; the driving mechanism is fixedly arranged at one end of the base body, is fixed on the base body and seals a space formed between the base body and the pipeline; one end of the centrifugal speed regulating mechanism is connected with the other end of the matrix, and the centrifugal speed regulating mechanism is a centrifugal flow unloading valve; and the spiral driving mechanism is connected with the other end of the centrifugal speed regulating mechanism and drives the centrifugal speed regulating mechanism to rotate. The device has the advantages of compact structure, small volume, rapid response, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of self-adaptive speed regulation, and particularly relates to a spiral driving centrifugal mechanical self-adaptive speed regulation device.
Background
With the development of petroleum, chemical industry, natural gas and nuclear industry, the quality problem of in-service oil and gas pipelines is more and more concerned, and at present, the in-pipeline detection technology is one of effective methods for ensuring the safe operation of pipelines, and can effectively detect the problems of corrosion, cracks and the like of the pipelines due to long-time service. The detection accuracy and efficiency of the detection in the pipeline are affected by the running speed, and in order to improve the detection efficiency and accuracy of the detection technology in the pipeline, the speed of the internal detection needs to be controlled so that the running speed is kept in a proper range. The speed regulating devices in the prior art all use a speed regulating motor to drive a valve, and have the problems of complex structure and high power consumption of the motor for long-distance operation.
Disclosure of Invention
The invention aims to provide a screw-driven centrifugal mechanical self-adaptive speed regulating device which solves the problems of complex structure and high power consumption in the prior art.
In order to achieve the above object, the screw-driven centrifugal machine adaptive speed regulation device of the present invention includes:
a cylindrical base body having a hollow interior;
the driving mechanism is fixedly arranged at one end of the base body, is fixed on the base body and seals a space formed between the base body and the pipeline;
one end of the centrifugal speed regulating mechanism is connected with the other end of the basal body, and the centrifugal speed regulating mechanism is a centrifugal flow unloading valve;
and the spiral driving mechanism is connected with the other end of the centrifugal speed regulating mechanism and drives the centrifugal speed regulating mechanism to rotate.
The self-adaptive speed regulating device further comprises an anti-rotation mechanism, and the anti-rotation mechanism comprises three groups of orientation mechanisms with 120-degree circumferences uniformly distributed on the side wall of the substrate.
The orientation mechanism includes:
one end of the pre-tightening telescopic rod is connected with the base body through a limiting pin shaft;
the two ends of the pre-tightening telescopic rod are sleeved with pre-tightening springs which are respectively contacted with the boss and the matrix on the pre-tightening telescopic rod;
the wheel shaft is fixed at the other end of the pre-tightening telescopic rod and is perpendicular to the plane where the axis of the base body and the axis of the pre-tightening telescopic rod are located;
and the directional wheels are arranged at the two ends of the wheel shaft.
The driving mechanism is two leather cups fixedly connected with the end part of the base body, and the outer contour of each leather cup is in interference fit with the pipeline.
The two leather cups are fixed on the substrate specifically as follows: a leather cup gasket is arranged between the two leather cups, a leather cup compression ring is arranged on the end face of the leather cup at the outer side, and compression screws sequentially penetrate through the leather cup compression ring, the leather cup at the outer side, the leather cup gasket and the leather cup at the inner side and are fixedly connected with a boss on the base body.
The centrifugal speed regulating mechanism comprises:
the flow unloading valve body comprises a first cylindrical structure with one end in running fit with the base body and a plurality of second cylindrical structures with one end communicated with the side wall of the other end of the first cylindrical structure, and a valve port is arranged on one side, connected with the first cylindrical structure, of each second cylindrical structure;
an adjusting cover connected with the other end of each second cylindrical structure;
the flow discharging valve cores are arranged in each second cylindrical structure and are in sliding fit with the inner wall of the second cylindrical structure along the axial direction;
and a relief spring arranged between each adjusting cover and the relief valve core, wherein the relief valve core is positioned at the end part of the second cylindrical structure to block the valve port when the relief spring is in an initial state.
The first tubular structure and the base body are in running fit with each other specifically: the first tubular structure stretches into the matrix and is connected with the round nut, a bearing is arranged between the first tubular structure and the matrix, and a bearing compression ring is arranged on the outer side of the bearing.
The second tubular structure includes four.
The screw drive mechanism includes:
one end of the mounting frame is fixedly connected with the flow unloading valve body of the centrifugal speed regulating mechanism through a connecting flange;
three groups of deflection angle adjusting mechanisms which are circumferentially and uniformly distributed on the side wall of the mounting frame at 120 degrees, wherein each group of deflection angle adjusting mechanism comprises a pair of deflection angle wheels which are oppositely arranged, and the angles between the axes of the deflection angle wheels and the axes of the pipelines are larger than zero degrees; the deflection wheel is matched with the inner wall of the pipeline.
The angle between the axis of the deflection wheel and the axis of the pipeline is 24 degrees.
The beneficial effects of the invention are as follows: the self-adaptive speed regulator consists of driving mechanism, rotation preventing mechanism, centrifugal speed regulating mechanism and screw driving mechanism. The driving mechanism consists of double leather cups, is arranged at the tail part of the device matrix and drives the device to advance through medium pressure difference; the anti-rotation mechanism consists of three groups of directional wheels uniformly distributed at 120 degrees of circumference, and the main function of the anti-rotation mechanism is that the limiting device can only move along the axis direction of the pipeline by means of the arrangement direction of the directional wheels and the friction force of the wheels on the inner wall of the pipeline, so that the rotation around the axis is avoided; the spiral driving mechanism consists of three groups of deflection wheels which are uniformly distributed at 120 degrees circumferentially, and the wheel axis and the axis of the pipeline form an included angle of 24 degrees, so that the spiral driving mechanism has the function of converting linear driving into spiral movement, namely rotation and linear movement. When the driving force obtained by driving the leather cup is transmitted to the spiral driving mechanism, the action of spiral driving is generated due to the action of the inclined angle between the deflection wheel and the axis of the pipeline, and the part of the mechanism advances in a spiral rotation mode along the inner wall of the pipeline; the centrifugal speed regulating mechanism is a cross centrifugal flow unloading combined valve, the combined valve consists of four centrifugal flow unloading valves, one end of the combined valve is connected with a screw driving mechanism, the screw driving mechanism drives the combined valve to rotate, the other end of the combined valve is connected with a base body through a bearing, and the combined valve is guaranteed to linearly move through an anti-rotation mechanism.
The medium in the pipeline generates pressure difference at the front end and the rear end of the device due to the action of the leather cup, and the pressure difference can drive the device to linearly move along the inner wall of the pipeline. The larger the pressure difference is in the moving process, the faster the moving speed of the device is, the faster the rotation speed generated by the screw driving device at the front end is, and the higher the rotating speed is, the larger the centrifugal force is, and the larger the discharge flow of the valve body is. After the discharge flow is increased, the pressure difference between the front end and the rear end of the device is reduced, the moving speed of the device is reduced, and when the pressure difference is regulated to the state that the driving force and the moving resistance reach relative balance, the device can move at a stable speed. The device has the advantages of compact structure, small volume, rapid response, low cost and the like.
Drawings
FIG. 1 is a schematic diagram of a screw driven centrifugal mechanical adaptive speed governor of the present invention;
FIG. 2 is a front view of the structure of the screw driven centrifugal machine adaptive speed governor of the present invention;
FIG. 3 is a right side view of the structure of the screw driven centrifugal machine adaptive speed governor of the present invention;
FIG. 4 is a cross-sectional view of the structure of the screw-driven centrifugal machine adaptive speed governor of the present invention;
wherein: 1. the device comprises a base body, 2, a driving mechanism, 201, a leather cup, 202, a leather cup gasket, 203, a leather cup compression ring, 3, a centrifugal speed regulating mechanism, 301, a discharge valve body, 302, an adjusting cover, 303, a discharge valve core, 304, a discharge spring, 305, round nuts, 306, a bearing, 307, a bearing compression ring, 4, a screw driving mechanism, 401, a connecting flange, 402, a mounting rack, 403, an angle deflection wheel, 5, an anti-rotation mechanism, 501, a limiting pin shaft, 502, a pre-tightening telescopic rod, 503, a pre-tightening spring, 504, a wheel shaft, 505 and a directional wheel.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the screw-driven centrifugal mechanical adaptive speed regulation device of the present invention comprises:
a tubular base body 1 having a hollow interior;
the driving mechanism 2 is fixedly arranged at one end of the base body 1, and the driving mechanism 2 is fixedly arranged on the base body 1 and seals a space formed between the base body 1 and a pipeline;
one end of the centrifugal speed regulating mechanism 3 is connected with the other end of the matrix 1, and the centrifugal speed regulating mechanism 3 is a centrifugal flow unloading valve;
and the spiral driving mechanism 4 is connected with the other end of the centrifugal speed regulating mechanism 3, and the spiral driving mechanism 4 drives the centrifugal speed regulating mechanism 3 to rotate.
The self-adaptive speed regulating device further comprises an anti-rotation mechanism 5, and the anti-rotation mechanism 5 comprises three groups of orientation mechanisms with 120-degree circumferences uniformly distributed on the side wall of the base body 1.
The orientation mechanism includes:
a pre-tightening telescopic rod 502 with one end connected with the base body 1 through a limiting pin shaft 501;
a pre-tightening spring 503 sleeved on the pre-tightening telescopic rod 502, wherein the two ends of the pre-tightening spring are respectively contacted with the boss on the pre-tightening telescopic rod 502 and the base body 1;
the wheel axle 504 is fixed at the other end of the pre-tightening telescopic rod 502, and the wheel axle 504 is perpendicular to the axis of the base body 1 and the plane where the axis of the pre-tightening telescopic rod 502 is located;
and directional wheels 505 disposed at both ends of the wheel shaft 504.
The driving mechanism 2 is two leather cups 201 fixedly connected with the end part of the base body 1, and the outer contour of each leather cup 201 is in interference fit with a pipeline.
The two cups 201 are fixed on the base 1 specifically: a cup gasket 202 is arranged between the two cups 201, a cup compression ring 203 is arranged on the end face of the cup 201 at the outer side, and compression screws sequentially penetrate through the cup compression ring 203, the cup 201 at the outer side, the cup gasket 202 and the cup 201 at the inner side and are fixedly connected with a boss on the base body 1.
The centrifugal speed regulating mechanism 3 includes:
a flow unloading valve body 301, wherein the flow unloading valve body 301 comprises a first cylindrical structure with one end in running fit with the base body 1 and a plurality of second cylindrical structures with one end communicated with the side wall of the other end of the first cylindrical structure, and a valve port is arranged on one side, connected with the first cylindrical structure, of each second cylindrical structure;
an adjustment cover 302 connected to the other end of each of the second cylindrical structures; the position of the adjustment cap 302 within the second tubular structure is adjustable;
a flow discharging valve core 303 arranged in each second cylindrical structure and in sliding fit with the inner wall of the second cylindrical structure along the axial direction;
and a relief spring 304 disposed between each of the adjustment covers 302 and the relief valve element 303, wherein the relief valve element 303 is positioned at the end of the second cylindrical structure to block the valve port when the relief spring 304 is in an initial state.
The first tubular structure and the base body 1 are in running fit specifically: the first tubular structure stretches into the base body 1 and is connected with the round nut 305, a bearing 306 is arranged between the first tubular structure and the base body 1, and a bearing compression ring 307 is arranged outside the bearing 306.
The second tubular structure includes four.
The screw drive mechanism 4 includes:
the centrifugal speed regulating mechanism comprises a mounting frame 402, wherein one end of the mounting frame 402 is fixedly connected with the flow discharging valve body 301 of the centrifugal speed regulating mechanism 3 through a connecting flange 401;
three groups of deflection angle adjusting mechanisms with 120-degree circumferences uniformly distributed on the side wall of the mounting frame 402, wherein each group of deflection angle adjusting mechanism comprises a pair of deflection angle wheels 403 which are oppositely arranged, and the angles between the axes of the deflection angle wheels 403 and the axes of the pipelines are larger than zero degrees; the deflector 403 engages the inner wall of the pipe.
The angling wheel 403 has an axis that is 24 degrees from the axis of the pipe.
The driving mechanism 2 of the speed regulating device of the invention consists of two leather cups 201, and the leather cups 201 are in interference fit with the inner wall of the pipeline so as to generate pressure difference. The two leather cups 201 are fastened on the base body 1 through leather cup gaskets 202 and leather cup compression rings 203 by using screws, the inside of the base body 1 is hollow, and pressure medium in a pipeline enters the centrifugal speed regulating mechanism 3 through the inside of the base body 1. The base body 1 is connected to the centrifugal discharge valve body 301 through a pair of bearings 306, and the centrifugal discharge valve body 301 is freely rotatable about an axis to generate centrifugal force. The centrifugal type flow discharging valve body 301 is a composite valve, and is internally composed of four flow discharging valves which are arranged in a cross shape in an orthogonal mode, when the centrifugal force generated by rotation of the valve body and the pressure difference of medium act on the flow discharging valve core 303 to be larger than the pretightening force of the flow discharging spring 304, the flow discharging valve core 303 moves away from the center, the valve port is increased, flow discharging is achieved, the pressure difference of the front end and the rear end of the leather cup 201 is adjusted, and then the moving speed is controlled. The centrifugal type flow discharging valve body 301 is connected with a mounting frame 402 through a connecting flange 401, three groups of deflection wheels 403 are uniformly distributed on the mounting frame 402 at 120 degrees, the advancing direction of the deflection wheels 403 is not parallel to the axis of the pipeline, but is deflected at an angle, driving force provided by the leather cup 201 along the axis of the pipeline is generated through the deflection wheels 403, and accordingly the flow discharging valve body 301 is driven to rotate through the connecting flange 401. The greater the pressure difference between the front end and the rear end of the cup 201, the greater the generated thrust force, the faster the linear movement speed, and the greater the rotation speed obtained through the deflection wheel 403, so that the discharge valve body 301 obtains a higher rotation speed, and the valve core moves outwards under the combined action of the medium pressure and the centrifugal force, so that the opening amount of the discharge valve port is increased, the pressure difference between the front end and the rear end of the cup 201 is reduced, and the stable speed movement under the pressure balance is achieved.
Three groups of orientation mechanisms are uniformly distributed on the base body 1 at 120 degrees, and the advancing directions of the orientation mechanisms are parallel to the axis of the pipeline, so that the reaction turning force caused by the screw driving device is overcome, and the base body 1 is ensured not to rotate.
The moving speed of the device is related to the pressure of the medium and the spring force of the discharging spring 304, when the pressure of the medium at the input end is fixed, the relative position of the adjusting cover 302 can be adjusted to change the spring force of the discharging spring 304 within a certain range, so that the off-line adjustment of the moving speed of the device is realized.
Claims (6)
1. Screw drive centrifugal mechanical self-adaptation speed adjusting device, its characterized in that includes:
a tubular base body (1) having a hollow interior;
the driving mechanism (2) is fixedly arranged at one end of the base body (1), and the driving mechanism (2) is fixedly arranged on the base body (1) and seals a space formed between the base body (1) and the pipeline;
one end of the centrifugal speed regulating mechanism (3) is connected with the other end of the matrix (1), and the centrifugal speed regulating mechanism (3) is a centrifugal flow unloading valve;
the spiral driving mechanism (4) is connected with the other end of the centrifugal speed regulating mechanism (3), and the spiral driving mechanism (4) drives the centrifugal speed regulating mechanism (3) to rotate;
the driving mechanism (2) is two leather cups (201) fixedly connected with the end part of the base body (1), and the outer outline of each leather cup (201) is in interference fit with a pipeline;
the centrifugal speed regulating mechanism (3) comprises:
the flow unloading valve body (301), the flow unloading valve body (301) comprises a first cylindrical structure with one end in running fit with the base body (1) and a plurality of second cylindrical structures with one end communicated with the side wall of the other end of the first cylindrical structure, and a valve port is arranged on one side, connected with the first cylindrical structure, of each second cylindrical structure;
an adjustment cover (302) connected to the other end of each of the second cylindrical structures;
a flow discharging valve core (303) arranged in each second cylindrical structure and in sliding fit with the inner wall of the second cylindrical structure along the axial direction;
and a relief spring (304) arranged between each adjusting cover (302) and the relief valve core (303), wherein when the relief spring (304) is in an initial state, the relief valve core (303) is positioned at the end part of the second cylindrical structure to block the valve port;
the first cylindrical structure is in running fit with the base body (1) specifically: the first cylindrical structure extends into the base body (1) and is connected with the round nut (305), a bearing (306) is arranged between the first cylindrical structure and the base body (1), and a bearing compression ring (307) is arranged outside the bearing (306);
the screw drive mechanism (4) includes:
one end of the mounting frame (402) is fixedly connected with the flow unloading valve body (301) of the centrifugal speed regulating mechanism (3) through a connecting flange (401);
three groups of deflection angle adjusting mechanisms with 120-degree circumferences uniformly distributed on the side wall of the mounting frame (402), wherein each group of deflection angle adjusting mechanisms comprises a pair of deflection wheels (403) which are oppositely arranged, and the angles between the axes of the deflection wheels (403) and the axes of the pipelines are larger than zero degrees; the deflection wheel (403) is matched with the inner wall of the pipeline.
2. The screw-driven centrifugal machine adaptive speed regulation device according to claim 1, further comprising an anti-rotation mechanism (5), wherein the anti-rotation mechanism (5) comprises three sets of orientation mechanisms with 120-degree circumferences uniformly distributed on the side wall of the base body (1).
3. The screw driven centrifugal machine adaptive speed governor of claim 2, wherein the orientation mechanism comprises:
a pre-tightening telescopic rod (502) with one end connected with the base body (1) through a limiting pin shaft (501);
the two ends of the pre-tightening telescopic rod (502) are sleeved with pre-tightening springs (503) which are respectively contacted with a boss on the pre-tightening telescopic rod (502) and the base body (1);
the wheel axle (504) is fixed at the other end of the pre-tightening telescopic rod (502), and the wheel axle (504) is perpendicular to the axis of the base body (1) and the plane where the axis of the pre-tightening telescopic rod (502) is located;
and directional wheels (505) disposed at both ends of the wheel shaft (504).
4. The screw-driven centrifugal machine adaptive speed regulation device according to claim 1, characterized in that two cups (201) are fixed on the base body (1) in particular: a leather cup gasket (202) is arranged between the two leather cups (201), a leather cup compression ring (203) is arranged on the end face of the leather cup (201) at the outer side, and compression screws sequentially penetrate through the leather cup compression ring (203), the leather cup (201) at the outer side, the leather cup gasket (202) and the leather cup (201) at the inner side and are fixedly connected with a boss on the base body (1).
5. The screw driven centrifugal machine adaptive speed governor of claim 1, wherein the second cylindrical structure comprises four.
6. The screw driven centrifugal machine adaptive speed governor of claim 1, wherein the angling of the axis of the angling wheel (403) and the axis of the pipe is 24 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135041.1A CN107763367B (en) | 2017-11-16 | 2017-11-16 | Spiral driving centrifugal mechanical self-adaptive speed regulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135041.1A CN107763367B (en) | 2017-11-16 | 2017-11-16 | Spiral driving centrifugal mechanical self-adaptive speed regulating device |
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| Publication Number | Publication Date |
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| CN107763367A CN107763367A (en) | 2018-03-06 |
| CN107763367B true CN107763367B (en) | 2023-08-01 |
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| CN201711135041.1A Active CN107763367B (en) | 2017-11-16 | 2017-11-16 | Spiral driving centrifugal mechanical self-adaptive speed regulating device |
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| CN109237202B (en) * | 2018-08-31 | 2024-07-09 | 昆明理工大学 | Fluid driving type centrifugal speed regulation pipeline robot |
| CN109737264B (en) * | 2019-03-07 | 2023-08-18 | 北华大学 | Brake type intelligent plugging robot in pipeline |
| CN109764207B (en) * | 2019-03-07 | 2023-08-18 | 北华大学 | Intelligent plugging robot in pipeline |
| CN110566752A (en) * | 2019-08-28 | 2019-12-13 | 中国计量大学上虞高等研究院有限公司 | flow regulation and control municipal pipeline inspection robot |
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