CN116771322B - Tower type oil pumping machine winding drum load speed limiting protection device - Google Patents
Tower type oil pumping machine winding drum load speed limiting protection device Download PDFInfo
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- CN116771322B CN116771322B CN202311002695.2A CN202311002695A CN116771322B CN 116771322 B CN116771322 B CN 116771322B CN 202311002695 A CN202311002695 A CN 202311002695A CN 116771322 B CN116771322 B CN 116771322B
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- 230000000670 limiting effect Effects 0.000 title claims abstract description 146
- 238000005086 pumping Methods 0.000 title claims abstract description 134
- 238000004804 winding Methods 0.000 title claims abstract description 100
- 230000005540 biological transmission Effects 0.000 claims abstract description 86
- 238000010521 absorption reaction Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims description 75
- 230000006872 improvement Effects 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 11
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000011946 reduction process Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
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- 230000003111 delayed effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
Abstract
The invention relates to the technical field of oil extraction machinery, in particular to a tower type oil pumping machine winding drum load speed limiting protection device, which comprises: the kinetic energy absorption module is fixedly connected with the bracket of the pumping unit winding drum and is used for absorbing rotational kinetic energy generated in the operation process of the pumping unit winding drum; the speed limiting module is arranged on the inner side of the annular friction plate and comprises a first supporting shaft sleeved on the transmission shaft of the pumping unit winding drum and used for increasing the rotation resistance of the pumping unit winding drum when the centrifugal force generated by the pumping unit winding drum is greater than the integral mass of the speed reducing plate; and the limiting module is connected with the speed limiting module and used for limiting the rotation position on the vertical surface of the speed limiting module. The invention realizes the improvement of safety and stability in the deceleration process of the oil pumping unit winding drum.
Description
Technical Field
The invention relates to the technical field of oil extraction machinery, in particular to a tower type oil pumping machine winding drum load speed limiting protection device.
Background
In the prior art, a tower type pumping unit with long stroke and low stroke frequency is widely applied in the industry, and a motor of the tower type pumping unit drives a reduction gearbox and a roller to transfer energy to a steel wire belt group through forward and reverse rotation control so as to drive a pumping rod to do up-down linear motion. The steel wire belt group is internally provided with a plurality of groups of steel wires, the outer part is provided with a rubber layer, and when the long-time repeated running impact or the large instantaneous impact occurs to the load of the pumping unit, the steel wire material is easy to be damaged and broken, but the appearance of the steel wire belt group cannot be judged, so that the serious potential safety hazard exists. Once the local steel wires are broken too much, more steel wires can be broken in a linkage fatigue way, the whole steel wire belt group is directly broken under the compression of a large load, and finally the counterweight load of the tower crane can fall to cause serious production accidents.
Chinese patent publication No.: CN2703122Y discloses a tower type pumping unit reel load speed limiting protection device, which comprises a speed reducer brake wheel, and is characterized by comprising a speed reducer brake wheel rotating speed detection device, a brake control device and a brake; the speed detecting device of the speed reducer brake wheel consists of more than 2 magnetic steels inlaid on the speed reducer brake wheel, a proximity switch arranged on the side surface of the speed reducer brake wheel and corresponding to the positions of the magnetic steels, a speed regulating meter connected with the proximity switch and a signal output line of the speed regulating meter; the braking device is composed of a normally open contact connected with the signal output line, a coil power supply contact of an intermediate relay connected with the normally open contact, the intermediate relay connected with the motor and an alternating current traction electromagnet connected with the normally open contact; the brake comprises a flat rocker arm connected with manual braking and a braking piece connected with an alternating current traction electromagnet. Therefore, the tower type pumping unit winding drum load speed limiting protection device has the problems of low safety and low stability when the pumping unit winding drum is decelerated.
Disclosure of Invention
Therefore, the invention provides a tower type pumping unit winding drum load speed limiting protection device which is used for solving the problems of low safety and low stability when the pumping unit winding drum is decelerated in the prior art.
In order to achieve the above purpose, the present invention provides a tower type pumping unit reel load speed limiting protection device, comprising: the kinetic energy absorption module is fixedly connected with the bracket of the pumping unit winding drum and is used for absorbing rotational kinetic energy generated in the operation process of the pumping unit winding drum, and comprises a speed reduction drum connected with the bracket of the pumping unit winding drum and used for converting the rotational kinetic energy of the pumping unit winding drum into internal energy and an annular friction plate arranged on the inner side of the speed reduction drum and used for transmitting the rotational kinetic energy of the pumping unit winding drum; the speed limiting module is arranged on the inner side of the annular friction plate and comprises a first supporting shaft, a plurality of speed reducing plates and a plurality of support discs, wherein the first supporting shaft is sleeved on a transmission shaft of the pumping unit winding drum and used for increasing the rotation resistance of the pumping unit winding drum when the centrifugal force generated by the pumping unit winding drum is larger than the integral mass of the speed reducing plates; the limiting module is connected with the speed limiting module and used for limiting the rotation position on the vertical surface of the speed limiting module, and comprises a plurality of limiting clamping shafts which are arranged on one side far away from the transmission shaft and connected with the support disc and used for limiting the speed reducing plate, a plurality of spring clamping shafts which are arranged on one side close to the transmission shaft and connected with the support disc and used for limiting the torsion spring, and limiting pin shafts which are connected with the support disc and used for limiting the horizontal position of the transmission shaft of the oil pumping unit winding drum.
Further, for a single one of the speed reducing plates, it includes:
the speed reducing plate main body is connected with the bracket disc through being sleeved on the speed reducing plate supporting shaft and is used for driving the bracket disc to rotate;
the friction plate is connected with the speed reducing plate main body and used for transmitting friction resistance to the oil pumping unit winding drum;
the speed reducing plate supporting shaft is connected with the speed reducing plate main body and used for supporting the speed reducing plate main body;
and the spring clamping block is connected with the speed reduction plate main body and used for limiting the rotation position of the torsion spring connected with the speed reduction support shaft in a vertical plane.
Further, one end of the torsion spring is clamped on the spring clamping block.
Further, each support disc is respectively arranged at two sides of the first support shaft, and the integral structure formed by each support disc and the first support shaft is an axisymmetric structure taking the first support shaft as a circle center.
Further, for a single said carrier disc, comprising: the plurality of mounting hole groups and the transmission shaft hole are arranged at the circle center of the bracket disc.
Further, for the single support disc, the support disc further comprises a key groove which is connected with the transmission shaft hole and corresponds to the position of the limiting pin shaft.
Further, for a single mounting hole set, comprising:
the spring clamping shaft mounting hole is arranged on one side close to the transmission shaft and used for fixing the horizontal position of the corresponding spring clamping shaft;
the limiting clamping shaft mounting hole is arranged at one side far away from the transmission shaft and is used for fixing the horizontal position of the corresponding limiting clamping shaft;
the speed reducing plate support shaft mounting hole is arranged between the spring clamping shaft mounting hole and the limiting clamping shaft mounting hole and is used for fixing the horizontal position of the speed reducing plate support shaft mounting hole.
Further, a straight line formed by connecting the circle center of each supporting shaft installation hole of the speed reduction plate with the circle center of the transmission shaft hole bisects the round angle of the transmission shaft hole, and a straight line formed by connecting the circle center of each supporting shaft installation hole of the speed reduction plate with the circle center of the transmission shaft hole and a straight line formed by connecting the circle center of each supporting shaft installation hole of the adjacent speed reduction plate with the circle center of the transmission shaft hole are mutually perpendicular.
Further, for the round angle of the transmission shaft hole, a straight line formed by connecting the circle center of each spring clamping shaft mounting hole on the surface of the single bracket disc with the circle center of the transmission shaft hole on the same surface is halved, and a straight line formed by connecting the circle center of the single spring clamping shaft mounting hole with the circle center of the transmission shaft hole is mutually perpendicular to a straight line formed by connecting the circle centers of the adjacent spring clamping shaft mounting holes with the circle center of the transmission shaft.
Further, for the round angle of the transmission shaft hole, a straight line formed by connecting the circle center of each limit clamping shaft mounting hole on the surface of the single bracket disc with the circle center of the transmission shaft hole on the same surface is halved, and a straight line formed by connecting the circle center of the single limit clamping shaft mounting hole with the circle center of the transmission shaft hole is mutually perpendicular to a straight line formed by connecting the circle centers of the adjacent limit clamping shaft mounting holes with the circle center of the transmission shaft hole.
Compared with the prior art, the device has the beneficial effects that by arranging the kinetic energy absorption module, the speed limiting module and the limiting module and arranging the speed reduction cylinder and the annular friction plate, when the speed reduction of the oil pumping unit winding drum is completed, the friction force between the oil pumping unit winding drum and the friction plate is increased, and the risk of accidents caused by overhigh rotating speed is reduced; by arranging the speed reducing plate and the support disc, when the speed of the oil pumping unit winding drum is reduced, the speed of the rotation of the oil pumping unit winding drum is reduced by arranging the friction plate in the speed reducing plate, so that the safety of the oil pumping unit during the speed reduction of the oil pumping unit winding drum is improved; limiting clamping shafts and spring clamping shafts are arranged to limit the speed reducing plate and the torsion spring, so that the rotating speed of the pumping unit winding drum during speed reduction is reduced, the safety of the pumping unit during speed reduction is improved, and the safety and stability of the pumping unit during speed reduction are improved.
Furthermore, the device reduces the influence of centrifugal force caused by the pumping unit winding drum on the operation safety of the steel wire belt when the pumping unit winding drum is subjected to speed limiting protection through the friction plate, the speed reducing plate supporting shaft and the spring clamping block which are arranged in the speed reducing plate, and further improves the safety and the stability of the pumping unit winding drum in the speed reducing process.
Furthermore, one end of the torsion spring is clamped on the spring clamping block, and the influence of too fast speed reduction on safety is avoided through the torsion spring and the spring clamping block, so that the safety and stability in the speed reduction process of the oil pumping unit winding drum are further improved.
Furthermore, the device improves the stability of the installation of the speed reducing plate support shaft through the corresponding positions of the speed reducing plate support shaft and the speed reducing plate support shaft at the adjacent position, and further improves the safety and stability of the pumping unit in the speed reducing process of the winding drum.
Drawings
FIG. 1 is a side view of the inside of a speed limiting module of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
FIG. 2 is a diagram of the appearance of a speed limiting module of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
FIG. 3 is a diagram of a bracket disc structure of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
FIG. 4 is a diagram of the speed reducing plate of the tower type pumping unit reel load speed limiting protection device according to the embodiment of the invention;
FIG. 5 is a diagram of the installation structure of a speed limiting module of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
FIG. 6 is a diagram of the whole semi-section of a pumping unit reel of the tower type pumping unit reel load speed limiting protection device according to the embodiment of the invention;
FIG. 7 is a normal state diagram of a speed limiting module of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
FIG. 8 is a diagram of overspeed operation of a speed limiting module of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the present invention;
FIG. 9 is a block diagram of the overall structure of a tower type pumping unit reel load speed limiting protection device according to an embodiment of the invention;
the reference numerals are as follows: the oil pumping unit comprises a 1-support disc, a 2-speed reducer body, a 3-friction plate, a 4-spring clamping block, a 5-torsion spring, a 6-speed reducer supporting shaft, a 7-limit clamping shaft, an 8-transmission shaft hole, a 9-key slot, a 10-spring clamping shaft, an 11-speed reducer barrel, a 12-annular friction plate, a 13-oil pumping unit winding drum support, a 14-limit pin shaft, a 15-bearing, a 16-transmission shaft, a 17-oil pumping unit winding drum, an 18-base, a 19-first pressure sensor and a 20-second pressure sensor.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, the device for protecting a load speed limit of a reel of a tower type pumping unit according to an embodiment of the present invention is a speed limit module internal side view structure, a speed limit module external structure, a support disc structure, a speed reduction plate structure, a speed limit module installation structure, a whole half-section structure of the reel of the pumping unit, a normal state diagram of the speed limit module, an overspeed state diagram of the speed limit module, and an overall structure block diagram, respectively. The invention relates to a tower type pumping unit reel load speed limiting protection device, which comprises:
the kinetic energy absorption module is fixedly connected with the bracket 13 of the pumping unit winding drum and is used for absorbing the rotational kinetic energy generated in the running process of the pumping unit winding drum 17, and comprises a speed reduction drum 11 connected with the bracket 13 of the pumping unit winding drum and used for converting the rotational kinetic energy of the pumping unit winding drum 17 into internal energy, and an annular friction plate 12 arranged on the inner side of the speed reduction drum 11 and used for transmitting the rotational kinetic energy of the pumping unit winding drum 17;
the speed limiting module is arranged on the inner side of the annular friction plate 12 and comprises a first supporting shaft, a plurality of speed reducing plates and a plurality of support discs 1, wherein the first supporting shaft is sleeved on a transmission shaft 16 of the pumping unit winding drum 17 and used for increasing the resistance of the pumping unit winding drum 17 to rotation when the centrifugal force generated by the pumping unit winding drum 17 is larger than the integral mass of the speed reducing plates, the speed reducing plates are connected with the first supporting shaft and used for increasing the friction force between the first supporting shaft and the annular friction plate pumping unit winding drum 17 through friction contact with the annular friction plate 12, and the support discs 1 are connected with the first supporting shaft and used for providing limit positions for the speed reducing plates;
the limiting module is connected with the speed limiting module and used for limiting the rotation position on the vertical surface of the speed limiting module, and comprises a plurality of limiting clamping shafts 7 which are arranged on one side far away from the transmission shaft 16 and are connected with the support disc 1 and used for limiting the speed reduction plate, a plurality of spring clamping shafts 10 which are arranged on one side close to the transmission shaft 16 and are connected with the support disc 1 and used for limiting the torsion spring 5, and limiting pin shafts 14 which are connected with the support disc 1 and used for limiting the horizontal position of the transmission shaft 16 of the pumping unit winding drum 17.
According to the device, the kinetic energy absorption module, the speed limiting module and the limiting module are arranged, and the speed reduction barrel 11 and the annular friction plate 12 are arranged, so that when the speed reduction of the oil pumping unit winding drum 17 is completed, the friction force between the oil pumping unit winding drum and the friction plate 3 is increased, and the risk of accidents caused by overhigh rotating speed is reduced; by arranging the speed reducing plate and the support disc 1, when the speed of the pumping unit winding drum 17 is reduced, the speed of the pumping unit winding drum 17 is reduced by arranging the friction plate 3 in the speed reducing plate, so that the safety of the pumping unit during the speed reduction of the pumping unit winding drum is improved; limiting clamping shafts 7 and spring clamping shafts 10 are arranged to limit the speed reducing plate and the torsion spring 5, so that the rotating speed of the pumping unit winding drum 17 during speed reduction is reduced, the safety of the pumping unit during speed reduction is improved, and the safety and stability of the pumping unit during speed reduction are improved.
With continued reference to fig. 1, for a single deceleration plate, the method includes:
the speed reducing plate main body 2 is connected with the bracket disc 1 by being sleeved on the speed reducing plate supporting shaft and is used for driving the bracket disc 1 to rotate;
a friction plate 3 connected to the speed reducing plate body 2 for transmitting friction resistance to the pumping unit reel 17;
a speed reduction plate support shaft 6 connected to the speed reduction plate body 2 for supporting the speed reduction plate body 2;
and a spring clamping block 4 connected with the speed reduction plate main body 2 and used for limiting the rotation position of the torsion spring 5 connected with the speed reduction support shaft in a vertical plane.
Specifically, the friction plate 3 and the speed reduction plate body 2 are connected by adhesion or caulking.
According to the device, through the friction plate 3, the speed reduction plate supporting shaft 6 and the spring clamping block 4 which are arranged in the speed reduction plate, the influence of centrifugal force caused by the oil pumping machine winding drum 17 on the operation safety of a steel wire belt is reduced when the oil pumping machine winding drum 17 is subjected to speed limiting protection, and the safety and stability of the oil pumping machine winding drum in the speed reduction process are further improved.
With continued reference to fig. 1, one end of the torsion spring 5 is clamped on the spring clamping block 4.
According to the device, one end of the torsion spring 5 is clamped on the spring clamping block 4, and the influence of too fast speed reduction on safety is avoided through the torsion spring 5 and the spring clamping block 4, so that the safety and stability in the speed reduction process of the winding drum of the oil pumping unit are further improved.
With continued reference to fig. 1, each support disc 1 is disposed on two sides of the first support shaft, and the overall structure formed by each support disc 1 and the first support shaft is an axisymmetric structure with the first support shaft as a center.
With continued reference to fig. 1, for a single carrier disc 1, it comprises: a plurality of mounting hole groups and a transmission shaft hole 8 arranged at the center of the bracket disc 1.
With continued reference to fig. 1 and 3, for a single carrier disc 1, a keyway 9 is provided, which is connected to the drive shaft bore 8 and corresponds to the position of the limit pin 14.
With continued reference to FIG. 1, for a single set of mounting holes, the method includes:
the spring clamping shaft mounting hole is arranged on one side close to the transmission shaft 16 and is used for fixing the horizontal position of the corresponding spring clamping shaft 10;
the limit clamping shaft mounting hole is arranged at one side far away from the transmission shaft 16 and is used for fixing the horizontal position of the corresponding limit clamping shaft 7;
the speed reducing plate support shaft mounting hole is arranged between the spring clamping shaft mounting hole and the limiting clamping shaft mounting hole and is used for fixing the horizontal position of the speed reducing plate support shaft mounting hole.
With continued reference to fig. 1, a straight line formed by connecting the center of each of the supporting shaft holes of the speed reduction plates with the center of the transmission shaft hole 8 bisects the round corner of the transmission shaft hole 8, and a straight line formed by connecting the center of each of the supporting shaft holes of the single speed reduction plate with the center of the transmission shaft hole 8 is perpendicular to a straight line formed by connecting the center of the supporting shaft hole of the adjacent speed reduction plate with the center of the transmission shaft hole 8.
According to the device, through the corresponding positions of the arranged speed reduction plate support shaft 6 and the speed reduction plate support shaft 6 at the adjacent position, the installation stability of the speed reduction plate support shaft 6 is improved, and the safety and stability in the speed reduction process of the oil pumping unit winding drum are further improved.
With continued reference to fig. 1 and 3, for the round angle of the transmission shaft hole 8, a straight line formed by connecting the center of each spring clamping shaft mounting hole on the surface of the single bracket disc 1 with the center of the transmission shaft hole 8 on the same surface is bisected by the round angle, and a straight line formed by connecting the center of each spring clamping shaft mounting hole with the center of the transmission shaft hole 8 is mutually perpendicular to a straight line formed by connecting the center of each adjacent spring clamping shaft mounting hole with the center of the transmission shaft 16.
With continued reference to fig. 1, for the round angle of the transmission shaft hole 8, a straight line formed by connecting the circle center of each limit clamping shaft mounting hole on the surface of the single bracket disc 1 with the circle center of the transmission shaft hole 8 on the same surface bisects the round angle of the transmission shaft hole 8, and a straight line formed by connecting the circle center of the single limit clamping shaft mounting hole with the circle center of the transmission shaft hole 8 is perpendicular to a straight line formed by connecting the circle centers of the adjacent limit clamping shaft mounting holes with the circle center of the transmission shaft hole 8.
With continued reference to fig. 8, in the case that the load is severely unbalanced, the single-side load is greater than the output load of the motor, the pumping unit winding drum 17 is dragged by the load, and the actual rotation speed of the pumping unit winding drum 17 is greater than the theoretical rotation speed of the transmission shaft 16, at this time, the centrifugal force born by the protection device is greater than the whole mass of the speed reducing plate, the speed reducing plate is affected by the centrifugal force and rapidly moves outwards towards the tangential direction of the motion track, the friction plate 3 on the outer side of the speed reducing plate is in frictional contact with the annular friction plate 3 in the speed reducing drum 11, and uniform friction force is instantaneously generated through synchronous cooperation of the 4 groups of friction plates 3, so that the rotation speeds of the transmission shaft 16 and the pumping unit winding drum 17 are reduced.
Specifically, under the condition that the rotation speed is not reduced, the centrifugal force always maintains the outward movement posture of the speed reducing plate, and friction contact is always performed; if the rotation speeds of the transmission shaft 16 and the oil pumping machine winding drum 17 are reduced, the centrifugal force born by the protection device is changed, and when the centrifugal force born by the protection device is smaller than the whole mass of the speed reducing plate, the speed reducing plate is contracted and reset, and the protection device keeps running continuously; when the rotating speed is ultrahigh again, the protection device can repeatedly click the speed limiting action.
Specifically, when the belt and the steel cable are broken, the rotation speed of the oil pumping unit winding drum 17 is increased, the friction force generated by the synchronous friction plates 3 of the 4 groups of the protection device is maximized, the rotation speed of the transmission shaft 16 and the oil pumping unit winding drum 17 is reduced, if the rotation speed is still not reduced, the motor load is reduced rapidly, and the electric control system is started for protection and shutdown in a delayed mode, wherein the motor is used for starting an electromagnetic brake device.
Specifically, different tower beam-pumping units have different requirements on the rotation speeds of the motor shaft and the beam-pumping unit winding drum 17 due to the mechanical parameter difference, and the centrifugal force data of the protection device can be changed by changing the speed reducing plates with different weights and the torsion springs 5.
It can be understood by those skilled in the art that the centrifugal action direction assumed by the protection device is clockwise, and is essentially anti-falling protection and overload protection of the counterweight part of the tower crane, and the direction can be adaptively adjusted according to actual conditions when the scheme is implemented; if there is a speed limiting protection requirement in both clockwise and counterclockwise directions, 2 sets of parallel protection devices can be set on the transmission shaft 16, and the speed limiting action directions of the 2 sets of parallel protection devices are opposite.
With continued reference to FIG. 5, the tower machine reel is fixedly connected to the drive shaft 16; the transmission shaft hole 8 of the protection device is nested on the adjacent transmission shaft 16 of the pumping unit winding drum 17 and is placed into a key through the key slot 9 for limiting and fixing; the position corresponding to the installation of the protection device is provided with a deceleration cylinder 11 which is inserted in a nested way, and the inner side of the deceleration cylinder is provided with a riveted annular friction plate 3 which corresponds to the friction plate 3 on the deceleration plate; the speed reducing cylinder 11 is fixed on a bracket of the pumping unit winding drum, a hole groove is arranged at the central position and is provided with a bearing 15, the bearing passes through a transmission shaft 16, and the bottom of the bracket is a base 18; the beam-pumping unit winding drum 17 is a traction winding drum of a steel wire belt group matched with the tower-type beam-pumping unit.
Example 1
The invention described in the embodiment 1 is further provided with a detection module, wherein the detection module comprises a first pressure sensor 19 connected with the limiting pin shaft and used for detecting the actual pressure of the limiting pin shaft, and a second pressure sensor 20 arranged on the lateral surface of the outer side of the first supporting shaft and used for detecting the lateral pressure of the transmission shaft hole; the central control module is respectively connected with the kinetic energy absorption module, the speed limiting module, the limiting module and the detection module and is used for adjusting the standard maintenance period of the kinetic energy absorption module to a corresponding period when the speed limiting accuracy of the speed limiting protection device is judged to be lower than an allowable range according to the average speed reducing time length of the pumping unit winding drum in a plurality of periods, or adjusting the length of the limiting pin shaft to a first corresponding length according to the actual pressure of the limiting pin shaft detected by the first pressure sensor, and secondarily adjusting the length of the limiting pin shaft to a second corresponding length according to the side pressure of the transmission shaft hole under a first condition; the first condition is that the central control module completes primary adjustment of the length of the limiting pin shaft.
Specifically, the length of the limiting pin shaft is the extension length of the limiting pin shaft replacement of the limiting pin shaft along the direction of the key groove perpendicular to the transmission shaft hole or the first support shaft in the next operation period.
According to the embodiment, the detection module and the central control module are arranged, when the speed limit precision of the speed limit protection device is judged to be lower than the allowable range according to the average speed reduction time length of the pumping unit winding drum in a plurality of periods, the standard maintenance period of the kinetic energy absorption module is adjusted to the corresponding period, the influence on the speed limit precision of the speed limit protection device due to the fact that the adjustment of the standard maintenance period of the kinetic energy absorption module is inaccurate is reduced, the length of the limiting pin shaft is adjusted to the first corresponding length according to the actual pressure of the limiting pin shaft detected by the pressure sensor connected with the limiting pin shaft, the influence on the stability of the pumping unit winding drum transmission shaft due to the fact that the adjustment of the length of the limiting pin shaft is inaccurate is reduced, the length of the limiting pin shaft is secondarily adjusted to the second corresponding length according to the side pressure of the transmission shaft hole under the first condition, the influence on the safety of the winding drum of the pumping unit due to the fact that the secondary adjustment of the length of the limiting pin shaft is inaccurate is reduced, and the improvement on the safety and the stability of the winding drum in the speed reduction process of the pumping unit is achieved.
With continued reference to fig. 7, the central control module determines whether the speed limit accuracy of the speed limit protection device is within the allowable range according to the average speed-reducing duration of the beam-pumping unit winding drum for several periods, where,
the first type of judgment mode is that the central control module judges that the speed limiting accuracy of the speed limiting protection device is in an allowable range under the condition of presetting a first speed reducing duration;
the second type of judgment mode is that the central control module judges that the speed limiting accuracy of the speed limiting protection device is lower than an allowable range under the condition of presetting a second speed reducing duration, and the standard maintenance period of the kinetic energy absorption module is adjusted to a corresponding period by calculating the difference value between the average speed reducing duration of the pumping unit winding drum of a plurality of periods and the preset first speed reducing duration;
the third type of judgment mode is that the central control module judges that the speed limiting accuracy of the speed limiting protection device is lower than an allowable range under the condition of presetting a third speed reducing duration, preliminarily judges that the connection stability degree of the transmission shaft and the speed limiting module is lower than the allowable range, and judges secondarily whether the connection stability degree of the transmission shaft and the speed limiting module is lower than the allowable range according to the actual pressure of the limiting pin shaft;
the preset first speed reduction time length condition is that the average speed reduction time length of the oil pumping unit winding drum in a plurality of periods is smaller than or equal to the preset first speed reduction time length; the preset second speed reduction time length condition is that the average speed reduction time length of the oil pumping unit winding drum in a plurality of periods is longer than the preset first speed reduction time length and is smaller than or equal to the preset second speed reduction time length; the preset third speed reduction time length condition is that the average speed reduction time length of the oil pumping unit winding drum in a plurality of periods is longer than the preset third speed reduction time length; the preset first speed reduction time period is smaller than the preset second speed reduction time period.
Specifically, the average speed-down time length of the pumping unit winding drum in a plurality of periods is marked as Q, the preset first speed-down time length is marked as Q1, the preset second speed-down time length is marked as Q2, the difference between the average speed-down time length of the pumping unit winding drum in a plurality of periods and the preset first speed-down time length is marked as deltaq, and deltaq=q-Q1 is set, wherein Q1 is smaller than Q2.
With continued reference to fig. 7, the central control module determines two types of adjustment modes for the standard maintenance period of the kinetic energy absorption module according to the difference between the average deceleration duration of the pumping unit reel of a plurality of periods and the preset first deceleration duration under the preset second deceleration duration condition, wherein,
the first type of adjustment mode is that the central control module adjusts the standard maintenance period of the kinetic energy absorption module to a first period by using a preset second period adjustment coefficient under the condition of presetting a first speed reduction time difference value;
the second type of adjustment mode is that the central control module adjusts the standard maintenance period of the kinetic energy absorption module to a second period by using a preset first period adjustment coefficient under the condition of presetting a second speed reduction time difference value;
the difference value condition of the preset first speed reduction time length is that the difference value between the average speed reduction time length of the oil pumping unit winding drum in a plurality of periods and the preset first speed reduction time length is smaller than or equal to the difference value of the preset speed reduction time length; the difference value condition of the preset second speed reduction time length is that the difference value between the average speed reduction time length of the oil pumping unit winding drum in a plurality of periods and the preset first speed reduction time length is larger than the difference value of the preset speed reduction time length; the preset first period adjustment coefficient is smaller than the preset second period adjustment coefficient.
Specifically, the preset speed reduction time difference is denoted as Δq0, the preset first cycle adjustment coefficient is denoted as α1, the preset second cycle adjustment coefficient is denoted as α2, the standard maintenance cycle of the kinetic energy absorption module is denoted as V, wherein 0 < α1 < α2 < 1, the adjusted standard maintenance cycle of the kinetic energy absorption module is denoted as V ', V' =v× (1+αi)/2 is set, wherein αi is the preset ith cycle adjustment coefficient, and i=1, 2 is set.
According to the method, the device and the system, the preset first period adjustment coefficient, the preset second period adjustment coefficient and the preset speed reduction time difference value are set, when the speed limit accuracy of the speed limit protection device is judged to be lower than the allowable range according to the average speed reduction time of the pumping unit winding drum in a plurality of periods, the standard maintenance period of the kinetic energy absorption module is adjusted to the corresponding period, the influence on the speed limit accuracy of the speed limit protection device due to the fact that the standard maintenance period of the kinetic energy absorption module is not adjusted accurately is reduced, and the improvement of safety and stability in the speed reduction process of the pumping unit winding drum is further achieved.
With continued reference to fig. 8, the central control module determines two secondary judging modes of which the connection stability degree of the transmission shaft and the speed limiting module is lower than the allowable range according to the actual pressure of the limiting pin shaft under the condition of the third speed reduction duration, wherein,
the first secondary judgment mode is that the central control module secondarily judges that the connection stability degree of the transmission shaft and the speed limiting module is in an allowable range under a preset first pressure condition;
the second secondary judgment mode is that the central control module secondarily judges that the connection stability degree of the transmission shaft and the speed limiting module is lower than an allowable range under the condition of preset second pressure, and the length of the limiting pin shaft is adjusted to be the first corresponding length by calculating the difference value between the actual pressure of the limiting pin shaft and the preset pressure;
the preset first pressure condition is that the actual pressure of the limiting pin shaft is smaller than or equal to the preset pressure; the preset second pressure condition is that the actual pressure of the limiting pin shaft is larger than the preset pressure.
Specifically, the preset pressure is denoted as P1, the actual pressure of the limit pin is denoted as P, the difference between the actual pressure of the limit pin and the preset pressure is denoted as Δp, and Δp=p-P1 is set.
With continued reference to fig. 8, the central control module determines two types of adjustment modes for the length of the limiting pin according to the difference between the actual pressure and the preset pressure of the limiting pin under the preset second pressure condition, wherein,
the first type of length adjustment mode is that the central control module adjusts the length of the limiting pin shaft to a first length by using a preset first length adjustment coefficient under the condition of a preset first pressure difference value;
the second type of length adjustment mode is that the central control module adjusts the length of the limiting pin shaft to a second length by using a preset second length adjustment coefficient under the condition of a preset second pressure difference value;
the preset first pressure difference condition is that the difference value between the actual pressure of the limiting pin shaft and the preset pressure is smaller than or equal to the preset pressure difference value; the preset second pressure difference condition is that the difference between the actual pressure of the limiting pin shaft and the preset pressure is larger than the preset pressure difference; the preset first length adjustment coefficient is smaller than the preset second length adjustment coefficient.
Specifically, the preset pressure difference is denoted as Δp0, the preset first length adjustment coefficient is denoted as β1, the preset second length adjustment coefficient is denoted as β2, the length of the limiting pin is denoted as H, wherein 0 < β1 < β2 < 1, the adjusted length of the limiting pin is denoted as H ', H' =h× (1+2βj)/3 is set, wherein βj is the preset j-th length adjustment coefficient, and j=1, 2 is set.
According to the embodiment, the length of the limiting pin shaft is adjusted to the first corresponding length according to the actual pressure of the limiting pin shaft detected by the pressure sensor connected with the limiting pin shaft by setting the preset first length adjusting coefficient, the preset second length adjusting coefficient and the preset pressure difference value, so that the influence on the stability of the transmission shaft of the winding drum of the pumping unit due to inaccurate adjustment of the length of the limiting pin shaft is reduced, and the improvement on the safety and stability of the winding drum of the pumping unit in the speed reduction process is further realized.
With continued reference to fig. 8, the central control module determines whether the stability in the horizontal direction is within the allowable range according to the side pressure of the driving shaft hole in the first condition, wherein,
the first type of stability secondary judgment condition is that the central control module judges that the stability in the horizontal direction is in an allowable range under the condition of preset first side pressure;
the second type of stability secondary judging condition is that the central control module judges that the stability in the horizontal direction is lower than an allowable range under the condition of the preset second side pressure, and the length of the limiting pin shaft is secondarily adjusted to a second corresponding length by calculating the difference value between the side pressure of the transmission shaft hole and the preset side pressure;
the preset first side pressure condition is that the side pressure of the transmission shaft hole is smaller than or equal to the preset side pressure; the preset second side pressure condition is that the side pressure of the transmission shaft hole is larger than the preset side pressure.
Specifically, the side pressure of the drive shaft hole is denoted as Y, the preset side pressure is denoted as Y1, the difference between the side pressure of the drive shaft hole and the preset side pressure is denoted as Δy, and Δy=y—y1 is set.
With continued reference to fig. 8, the central control module determines two secondary adjustment modes for the length of the limiting pin according to the difference between the side pressure of the driving shaft hole and the preset side pressure under the preset second side pressure condition, wherein,
the first-class length secondary adjustment mode is that the central control module uses a preset third length secondary adjustment coefficient to secondarily adjust the length of the limiting pin shaft to a third length under the condition of a preset first side pressure difference value;
the second type of length secondary adjustment mode is that the central control module uses a preset fourth length secondary adjustment coefficient to secondarily adjust the length of the limiting pin shaft to a fourth length under the condition of preset second side pressure difference value;
the preset first side pressure difference condition is that the difference value between the side pressure of the transmission shaft hole and the preset side pressure is smaller than or equal to the preset side pressure difference value; the preset second side pressure difference condition is that the difference value between the side pressure of the transmission shaft hole and the preset side pressure is larger than the preset side pressure difference value; the preset third length secondary adjustment coefficient is smaller than the preset fourth length secondary adjustment coefficient.
Specifically, the preset side pressure difference Δy0, the preset third length secondary adjustment coefficient, the preset fourth length secondary adjustment coefficient, and the preset m length secondary adjustment coefficient are respectively 1 < β3 < β4, 1 < β4, H "=h' × (1+2βm)/3, and m=3, 4, respectively.
According to the embodiment, the preset third length secondary adjustment coefficient, the preset fourth length secondary adjustment coefficient and the preset side pressure difference value are set, the length of the limiting pin shaft is secondarily adjusted to the second corresponding length according to the side pressure of the transmission shaft hole under the first condition, the influence on the safety of the oil pumping unit winding drum due to the fact that the secondary adjustment of the length of the limiting pin shaft is inaccurate is reduced, and the improvement on the safety and stability of the oil pumping unit winding drum in the speed reduction process is further achieved.
Example 2
The central control module of this embodiment 2 determines two types of adjustment modes for the length of the limiting pin according to the difference between the actual pressure and the preset pressure of the limiting pin under the preset second pressure condition, where the preset pressure difference is denoted as Δp0, the preset first length adjustment coefficient is denoted as β1, the preset second length adjustment coefficient is denoted as β2, the limiting pin length is denoted as H, where 0 < β1 < β2 < 1, β1=0.8, β2=0.9, Δp0=50n, h=6m,
in embodiment 2, Δp=60deg.N is obtained, the central control module determines Δp > - Δp0 and adjusts the limiting pin length to the second length H 'by using the preset first length adjustment coefficient β1, so as to calculate H' =6m× (1+1.6)/3=5.2 m.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A tower type pumping unit reel load speed limiting protection device, comprising:
the kinetic energy absorption module is fixedly connected with the bracket of the pumping unit winding drum and is used for absorbing rotational kinetic energy generated in the operation process of the pumping unit winding drum, and comprises a speed reduction drum connected with the bracket of the pumping unit winding drum and used for converting the rotational kinetic energy of the pumping unit winding drum into internal energy and an annular friction plate arranged on the inner side of the speed reduction drum and used for transmitting the rotational kinetic energy of the pumping unit winding drum;
the speed limiting module is arranged on the inner side of the annular friction plate and comprises a first supporting shaft, a plurality of speed reducing plates and a plurality of support discs, wherein the first supporting shaft is sleeved on a transmission shaft of the pumping unit winding drum and used for increasing the rotation resistance of the pumping unit winding drum when the centrifugal force generated by the pumping unit winding drum is larger than the integral mass of the speed reducing plates, the speed reducing plates are connected with the first supporting shaft and used for increasing the friction force between the first supporting shaft and the pumping unit winding drum through friction contact with the annular friction plate, and the support discs are connected with the first supporting shaft and used for providing limiting positions for the speed reducing plates;
the limiting module is connected with the speed limiting module and used for limiting the rotation position on the vertical surface of the speed limiting module, and comprises a plurality of limiting clamping shafts which are arranged at one side far away from the transmission shaft and are connected with the support disc and used for limiting the speed reducing plate, a plurality of spring clamping shafts which are arranged at one side close to the transmission shaft and are connected with the support disc and used for limiting the torsion spring, and limiting pin shafts which are connected with the support disc and used for limiting the horizontal position of the transmission shaft of the oil pumping unit winding drum;
for a single said carrier disc, comprising: a plurality of mounting hole groups and a transmission shaft hole arranged at the center of the bracket disc;
for a single bracket disc, the bracket disc further comprises a key slot which is connected with the transmission shaft hole and corresponds to the position of the limit pin shaft;
for a single said speed reduction plate, comprising:
the speed reducing plate main body is connected with the bracket disc through a sleeve arranged on the speed reducing plate supporting shaft and is used for driving the bracket disc to rotate;
the friction plate is connected with the speed reducing plate main body and used for transmitting friction resistance to the oil pumping unit winding drum;
the speed reducing plate supporting shaft is connected with the speed reducing plate main body and used for supporting the speed reducing plate main body;
the spring clamping block is connected with the speed reduction plate main body and used for limiting the rotation position of the torsion spring connected with the speed reduction plate supporting shaft in a vertical plane;
for a single set of mounting holes, comprising:
the spring clamping shaft mounting hole is arranged on one side close to the transmission shaft and used for fixing the horizontal position of the corresponding spring clamping shaft;
the limiting clamping shaft mounting hole is arranged at one side far away from the transmission shaft and is used for fixing the horizontal position of the corresponding limiting clamping shaft;
the speed reducing plate support shaft mounting hole is arranged between the spring clamping shaft mounting hole and the limiting clamping shaft mounting hole and used for fixing the horizontal position of the speed reducing plate support shaft;
the circle center of each speed reduction plate support shaft mounting hole is connected with the circle center of the transmission shaft hole to form a straight line which bisects the round angle of the transmission shaft hole, and the straight line formed by connecting the circle center of the single speed reduction plate support shaft mounting hole with the circle center of the transmission shaft hole is mutually perpendicular to the straight line formed by connecting the circle center of the adjacent speed reduction plate support shaft mounting hole with the circle center of the transmission shaft hole.
2. The tower beam-pumping unit reel load speed limiting protection device of claim 1, wherein one end of the torsion spring is clamped on the spring clamping block.
3. The tower type pumping unit reel load speed limiting protection device according to claim 1, wherein each support disc is respectively arranged on two sides of the first support shaft, and the integral structure formed by each support disc and the first support shaft is an axisymmetric structure taking the first support shaft as a circle center.
4. The tower type pumping unit reel load speed limiting protection device according to claim 3, wherein a straight line formed by connecting the circle center of each spring clamping shaft mounting hole on the surface of the single bracket disc with the circle center of the transmission shaft hole on the same surface bisects the round angle of the transmission shaft hole, and a straight line formed by connecting the circle center of the single spring clamping shaft mounting hole with the circle center of the transmission shaft hole is mutually perpendicular to a straight line formed by connecting the circle centers of the adjacent spring clamping shaft mounting holes with the circle center of the transmission shaft.
5. The tower type pumping unit reel load speed limiting protection device according to claim 4, wherein a straight line formed by connecting the circle center of each limit clamping shaft mounting hole on the surface of the single bracket disc with the circle center of the transmission shaft hole on the same surface bisects the round angle of the transmission shaft hole, and a straight line formed by connecting the circle center of the single limit clamping shaft mounting hole with the circle center of the transmission shaft hole is mutually perpendicular to a straight line formed by connecting the circle centers of the adjacent limit clamping shaft mounting holes with the circle center of the transmission shaft hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311002695.2A CN116771322B (en) | 2023-08-09 | 2023-08-09 | Tower type oil pumping machine winding drum load speed limiting protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311002695.2A CN116771322B (en) | 2023-08-09 | 2023-08-09 | Tower type oil pumping machine winding drum load speed limiting protection device |
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| CN116771322B true CN116771322B (en) | 2024-01-30 |
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| CN2567860Y (en) * | 2001-09-12 | 2003-08-20 | 汪景营 | Automatic variable-torque motor |
| CN201535157U (en) * | 2009-09-18 | 2010-07-28 | 山东胜利石油石化装备研究中心 | Chain pumping unit |
| CN203335046U (en) * | 2013-07-18 | 2013-12-11 | 程书民 | Power compensation device of oil pumping unit |
| CN207551757U (en) * | 2017-12-19 | 2018-06-29 | 汤小明 | A kind of crane overspeed protective device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001159434A (en) * | 1999-12-01 | 2001-06-12 | Wakayama Nainenki Co Ltd | Emergency brake device |
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2023
- 2023-08-09 CN CN202311002695.2A patent/CN116771322B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2567860Y (en) * | 2001-09-12 | 2003-08-20 | 汪景营 | Automatic variable-torque motor |
| CN201535157U (en) * | 2009-09-18 | 2010-07-28 | 山东胜利石油石化装备研究中心 | Chain pumping unit |
| CN203335046U (en) * | 2013-07-18 | 2013-12-11 | 程书民 | Power compensation device of oil pumping unit |
| CN207551757U (en) * | 2017-12-19 | 2018-06-29 | 汤小明 | A kind of crane overspeed protective device |
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| CN116771322A (en) | 2023-09-19 |
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