CN114109286A - Packing self-pretightening system and method - Google Patents
Packing self-pretightening system and method Download PDFInfo
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- CN114109286A CN114109286A CN202111401986.XA CN202111401986A CN114109286A CN 114109286 A CN114109286 A CN 114109286A CN 202111401986 A CN202111401986 A CN 202111401986A CN 114109286 A CN114109286 A CN 114109286A
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- 238000003825 pressing Methods 0.000 claims abstract description 63
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
Abstract
A packing self-pretightening system and method. The packing self-pre-tightening system comprises a packing monitoring device, a transmission device, a driving device and a torque limiter; the packing monitoring device comprises a packing torque detector, wherein the packing torque detector is configured to detect the torque of a packing pressing cap; the transmission device comprises a first transmission assembly and a second transmission assembly, wherein the first transmission assembly is connected with the packing and is configured to drive the packing to press the cap to rotate; the driving device is connected with the second transmission assembly and is configured to drive the second transmission assembly; the torque limiter is arranged between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device. The packing self-pre-tightening system can provide a system for automatically tightening the packing.
Description
Technical Field
The embodiment of the disclosure relates to a packing self-pre-tightening system and a packing self-pre-tightening method.
Background
In the field of oil and gas exploitation, fracturing operation refers to a technology of forming cracks in oil and gas layers by using high-pressure fracturing fluid in the process of oil or gas exploitation. The fracturing operation can lead the oil-gas layer to form cracks, thereby improving the flowing environment of oil or natural gas in the underground and increasing the yield of the oil well. Thus, fracturing operations are the primary means of stimulation in oil and gas field production. On the other hand, the shale gas resources in the world are rich, but the shale formation permeability is low, so that the shale gas resources are not widely developed at present. The fracturing technology is one of core technologies for shale gas development, and can be widely applied to shale reservoir transformation and shale gas exploitation.
The plunger pump is one of core devices for performing fracturing operation, converts power output by a prime mover into reciprocating motion of a plunger, and then converts low-pressure fracturing fluid into high-pressure fracturing fluid by utilizing the reciprocating motion of the plunger. Along with the continuous development of ultrahigh pressure, ultra-deep wells and horizontal wells of oil and gas fields, the working condition of fracturing operation is more and more severe, so that the requirements on the discharge capacity and the pressure of a plunger pump are higher and higher.
Disclosure of Invention
The embodiment of the disclosure provides a packing self-pretightening system and a packing self-pretightening method. On the one hand, this packing is from pretension system accessible packing torque detector detects the moment of torsion that the cap was pressed to the packing, and whether automatic judgement packing is pressed the cap and is become flexible to still accessible drive arrangement and transmission press the cap to screw with the packing to can provide the automatic system of fastening of a packing. On the other hand, the packing self-pretightening system also avoids overlarge torque of the packing pressing cap by arranging a torque limiter between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device.
At least one embodiment of the present disclosure provides a packing is from pretensioning system, the packing includes that the packing presses the cap, the packing includes from pretensioning system: a packing monitoring device including a packing torque detector configured to detect a torque of the packing gland; the transmission device comprises a first transmission assembly and a second transmission assembly, wherein the first transmission assembly is connected with the packing pressing cap and is configured to drive the packing pressing cap to rotate; a drive device connected with the second transmission assembly and configured to drive the second transmission assembly; and the torque limiter is arranged between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly, or between the second transmission assembly and the driving device.
For example, an embodiment of the present disclosure provides a packing self-preloading system, further including: the controller is in communication connection with the packing torque detector, the driving device and the torque limiter respectively, and is configured to send a starting signal to the driving device when the torque detected by the packing torque detector is smaller than a preset torque, and send a closing signal to the driving device when the torque limiter slips.
For example, in a packing self-preloading system provided in an embodiment of the present disclosure, the packing monitoring device further includes: the packing leakage monitor is configured to monitor whether the packing generates a leakage phenomenon.
For example, in the packing self-preloading system provided in an embodiment of the present disclosure, the controller is in communication connection with the packing leakage monitor, and the controller is configured to send a start signal to the driving device when the packing leakage monitor detects a leakage phenomenon and the torque detected by the packing torque detector is smaller than the preset torque, and send an alarm signal when the packing leakage monitor detects a leakage phenomenon and the torque detected by the packing torque detector is greater than or equal to the preset torque.
For example, in a packing self-tightening system provided by an embodiment of the present disclosure, the first transmission assembly or the second transmission assembly includes a one-way transmission.
For example, in a packing self-preloading system provided by an embodiment of the present disclosure, the first transmission assembly includes a packing driving member connected to the packing gland; the second transmission assembly comprises a strip-shaped driving piece, the strip-shaped driving piece is connected with the driving device, the driving device is configured to drive the strip-shaped driving piece to perform linear motion, and the strip-shaped driving piece is configured to drive the packing driving piece to perform rotary motion so as to drive the packing pressing cap to screw.
For example, in the packing self-preloading system provided by an embodiment of the present disclosure, the packing driving member includes a packing driving gear fixed to the packing gland, and the first transmission member further includes a first torque transmission gear engaged with the packing driving gear; the strip-shaped driving piece comprises a driving rack, the second transmission piece further comprises a one-way driving gear, and the driving rack is meshed with the one-way driving gear; the torque limiter is disposed between the one-way driving gear and the first torque transmission gear, and is connected to the one-way driving gear and the first torque transmission gear, respectively.
For example, in the packing self-pretightening system provided by an embodiment of the present disclosure, the packing driving piece includes a one-way packing driving gear, the strip-shaped driving piece includes a driving rack, the driving rack is engaged with the one-way packing driving gear, the torque limiter is disposed between the one-way packing driving gear and the packing pressing cap, and is respectively connected with the one-way packing driving gear and the packing pressing cap.
For example, in the packing self-pretightening system provided by an embodiment of the present disclosure, the packing driving piece includes a one-way packing driving ratchet wheel, and is fixed with the packing pressing cap, the strip driving piece includes a pawl driving strip, the pawl driving strip is connected with the packing driving ratchet wheel, the torque limiter is disposed between the one-way packing driving ratchet wheel and the packing pressing cap, and is respectively connected with the one-way packing driving ratchet wheel and the packing pressing cap.
For example, in the packing self-tightening system provided by an embodiment of the disclosure, the first transmission assembly includes a packing driving gear, the second transmission assembly includes a second torque transmission gear, the packing driving gear is engaged with the second torque transmission gear, the torque limiter is disposed between the driving device and the second torque transmission gear and is respectively connected with the driving device and the second torque transmission gear, and the driving device is configured to drive the second torque transmission gear to rotate.
For example, in the packing self-pretightening system provided by an embodiment of the present disclosure, the first transmission assembly includes a packing driving sprocket, the second transmission assembly includes a packing driving chain and a torque transmission sprocket, the packing driving chain is respectively connected with the packing driving sprocket and the torque transmission sprocket, the torque limiter is disposed between the driving device and the torque transmission sprocket and respectively connected with the driving device and the torque transmission sprocket, and the driving device is configured to drive the torque transmission sprocket to rotate.
For example, in the packing self-tightening system provided by an embodiment of the disclosure, the driving device includes at least one of an electric motor, a hydraulic cylinder, and a pneumatic cylinder.
At least one embodiment of the present disclosure further provides a packing self-preloading method, including: detecting the torque of a packing pressing cap of the packing through a packing torque detector; when the torque detected by the packing torque detector is smaller than the preset torque, starting a driving device, and screwing the packing pressing cap through a transmission device; when the moment of torsion that packing torque detector detected is more than or equal to when predetermineeing the moment of torsion, close drive arrangement, drive arrangement through transmission will the packing is pressed the cap and is screwed including: and limiting the torque transmitted to the packing pressing cap by the transmission device through a torque limiter.
For example, the packing self-preloading method provided by an embodiment of the present disclosure further includes: when the torque limiter slips, the drive is turned off.
For example, the packing self-preloading method provided by an embodiment of the present disclosure further includes: monitoring whether the packing generates a liquid leakage phenomenon; when the packing leakage monitor detects leakage and the torque detected by the packing torque detector is smaller than the preset torque, the driving device is started and the packing pressing cap is screwed through the transmission device; when the packing leakage monitor detects leakage and the torque detected by the packing torque detector is greater than or equal to the preset torque, an alarm signal is sent.
For example, in a packing self-preloading method provided by an embodiment of the disclosure, the transmission device comprises a one-way transmission.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.
FIG. 1 is a schematic view of a plunger pump;
FIG. 2 is a schematic view of a fluid end of the plunger pump shown in FIG. 1;
fig. 3 is a schematic diagram of a packing self-preloading system according to an embodiment of the present disclosure;
fig. 4 is a logic flow diagram of a packing self-preloading system according to an embodiment of the present disclosure;
fig. 5 is a front view of a packing self-preloading system according to an embodiment of the present disclosure;
FIG. 6 is a side view of a packing self-tightening system according to an embodiment of the present disclosure;
fig. 7 is a front view of another packing self-tightening system according to an embodiment of the present disclosure;
FIG. 8 is a side view of another packing self-tightening system according to an embodiment of the present disclosure;
fig. 9 is a front view of another packing self-tightening system according to an embodiment of the present disclosure;
FIG. 10 is a side view of another packing self-tightening system according to an embodiment of the present disclosure;
fig. 11 is a front view of another packing self-tightening system according to an embodiment of the present disclosure;
FIG. 12 is a side view of another packing self-tightening system according to an embodiment of the present disclosure;
fig. 13 is a front view of another packing self-tightening system according to an embodiment of the present disclosure;
FIG. 14 is a side view of another packing self-pretensioning system according to an embodiment of the present disclosure; and
fig. 15 is a schematic flow chart of a packing self-preloading method according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
With the increasing requirements of fracturing operation on the displacement and pressure of a single plunger pump, the plunger pump not only needs to be capable of meeting continuous operation of high pressure and large displacement (for example, the current plunger pump operation pressure reaches more than 80Mpa, and the displacement reaches 1800 m)3Above), still need to guarantee the quality stability under the continuous high load operation, reduce pump stopping time and maintenance time. Moreover, with the increase of the power of the plunger pump, higher requirements are also made on the operation stability and the supporting strength of the plunger pump.
FIG. 1 is a schematic view of a plunger pump; fig. 2 is a schematic view of a fluid end in the plunger pump shown in fig. 1. As shown in fig. 1 and 2, the plunger pump 40 includes a power end 20 and a fluid end 10. The hydraulic end 10 mainly comprises a valve box 11, a plunger 12, a first valve component 13, a second valve component 14, a first sealing component 15, a second sealing component 16 and a packing component 17; the packing assembly 17 includes a packing gland 18 and other seals (not shown).
As shown in fig. 1 and 2, the valve box 11 includes a first cavity 11A and a second cavity 11B arranged in an intersecting manner, and a crossing portion of the first cavity 11A and the second cavity 11B is an intersecting cavity; a first sealing component 15 is arranged at one end of the first cavity 11A, a first valve component 13 is arranged at the other end of the first cavity 11A, and a second valve component 14 is arranged at one side of the first sealing component 15 close to the first valve component 13; the plunger 12 is arranged in the second cavity 11B, and the packing assembly 17 and the second sealing assembly 16 are respectively arranged at two ends of the second cavity 11B so as to seal the two ends of the second cavity 11B; the plunger 12 is reciprocable within the packing assembly 17 and the second cavity 11B.
As shown in fig. 1 and 2, the first valve component 13 is a one-way valve that allows fluid to enter the first cavity 11A from the outside but prevents fluid in the first cavity 11A from flowing out, and the second valve component 14 is also a one-way valve that allows fluid in the first cavity 11A to flow out but prevents fluid from entering the first cavity 11A from the outside; the power end 20 mainly comprises a crankshaft 21, a connecting rod 22, a crosshead 23, a pull rod 24 and a clamp 25; the crankshaft 21 is connected to a connecting rod 22, the crosshead 23 is connected to the connecting rod 22 and a tie rod 24, respectively, and the tie rod 24 is connected to the plunger 12 by a clip.
As shown in fig. 1 and 2, the plunger pump operates as follows: under the driving of the prime mover, the crankshaft 21 of the power end 20 rotates, so that the connecting rod 22 and the crosshead 23 are driven to reciprocate; the crosshead 23 then reciprocates the plunger 12 via the pull rod 24. When the plunger 12 performs a return movement (e.g., moves toward the crankshaft 21), the volume inside the valve housing 11 (i.e., the total volume of the first chamber 11A and the second chamber 11B) gradually increases, forming a partial negative pressure or vacuum; at this time, the first valve assembly 13 is opened, the second valve assembly 14 is closed, and external fluid enters the valve housing 11; when the plunger 12 is returned to the limit position, the inside of the valve housing 11 is filled with fluid, completing one fluid suction process. Then, when the plunger 12 makes a progressive movement, the volume inside the valve housing 11 is gradually reduced, the fluid inside the valve housing 11 is squeezed, and the pressure is increased; at this time, first valve component 13 is closed, second valve component 14 is opened, and the fluid inside valve box 11 is discharged through second valve component 14; when the plunger 12 is advanced to the limit position, the volume inside the valve housing 11 is minimized, completing a fluid discharge process. Accordingly, the above-described fluid suction process and fluid discharge process are alternately performed by the reciprocating motion of the plunger 12, so that the low-pressure fluid can be continuously converted into the high-pressure fluid and output.
As shown in fig. 1 and 2, during the operation of the plunger pump, the seal between the plunger 12 and the packing assembly 17 is dynamic, and is mainly realized by the radial expansion of the packing assembly 17. However, under the cyclic action of low pressure and high pressure, the packing gland 18 may loosen due to long-time work. If the detection is not timely, faults such as fracturing fluid puncture, flying of a packing pressing cap, valve box puncture, power end damage and the like can occur to the plunger pump, so that the operation efficiency is seriously influenced, and even safety accidents are caused.
At present, the oil and gas field operation site still adopts a maintenance mode of scheduled maintenance and sudden accident maintenance, and the scheduled maintenance requires operators to perform loosening inspection on each packing pressing cap of dozens or even dozens of plunger pumps on the site; under the maintenance system, no matter whether the packing pressing cap is loosened or not, the packing pressing cap needs to be checked one by one and one by one cylinder by operators, which wastes time and labor; on the other hand, the packing pressing cap is fastened by each operator only by hand feeling, so that the torque for pressing the packing by the packing pressing cap is different, a unified standard cannot be formed, and the method is not economical and unreasonable; and the maintenance is carried out after sudden accident, namely, the fault occurs, and the damage degree of the equipment is large and the maintenance cost is high.
In view of the above, the disclosed embodiments provide a packing self-preloading system and method. The packing self-pre-tightening system comprises a packing monitoring device, a transmission device, a driving device and a torque limiter; the packing monitoring device comprises a packing torque detector, wherein the packing torque detector is configured to detect the torque of a packing pressing cap; the transmission device comprises a first transmission assembly and a second transmission assembly, wherein the first transmission assembly is connected with the packing and is configured to drive the packing to press the cap to rotate; the driving device is connected with the second transmission assembly and is configured to drive the second transmission assembly; the torque limiter is arranged between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device. On the one hand, this packing is from pretension system accessible packing torque detector detects the moment of torsion that the cap was pressed to the packing, and whether automatic judgement packing is pressed the cap and is become flexible to still accessible drive arrangement and transmission press the cap to screw with the packing to can provide the automatic system of fastening of a packing. On the other hand, the packing self-pretightening system also avoids overlarge torque of the packing pressing cap by arranging a torque limiter between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device.
The packing self-preloading system and method provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
An embodiment of the present disclosure uses a packing self-preloading system, and fig. 3 is a schematic diagram of the packing self-preloading system provided in the embodiment of the present disclosure. As shown in fig. 3, the plunger pump 200 includes at least one packing assembly 210, each packing assembly 210 including a packing gland 215. The packing self-preloading system 110 comprises a packing monitoring device 110, a transmission device 120, a driving device 130 and a torque limiter 140; the packing monitoring device 110 includes a packing torque detector 112, the packing torque detector 112 configured to detect a torque of the packing gland 215; the transmission device 120 comprises a first transmission assembly 121 and a second transmission assembly 122, wherein the first transmission assembly 121 is connected with the packing cap 215 and is configured to drive the packing cap 215 to rotate, so that the packing assembly 210 can be fastened; the driving device 130 is connected to the second transmission assembly 122 and configured to drive the second transmission assembly 122; the torque limiter 140 is disposed between the first transmission assembly 121 and the packing cap 215, between the first transmission assembly 121 and the second transmission assembly 122, or between the second transmission assembly 122 and the driving device 130. It should be noted that although fig. 3 shows the torque limiter disposed between the second transmission assembly and the driving device, the embodiments of the present disclosure include, but are not limited to, that the torque limiter may also be disposed between the first transmission assembly and the packing gland, or between the first transmission assembly and the second transmission assembly.
In the packing self-pretightening system provided by the embodiment of the disclosure, on one hand, the packing self-pretightening system can detect the torque of the packing pressing cap through the packing torque detector, automatically judge whether the packing pressing cap is loosened or not, and also can tighten the packing pressing cap through the driving device and the transmission device, thereby providing a system for automatically fastening the packing. On the other hand, the packing self-pretightening system also avoids overlarge torque of the packing pressing cap by arranging a torque limiter between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device.
In some examples, as shown in fig. 3, the packing self-tightening system 100 further includes a controller 150, the controller 150 being communicatively coupled to the packing torque detector 112, the driver 130, and the torque limiter 140, respectively; the controller 150 is configured to transmit a start signal to the driving device 130 when the torque detected by the packing torque detector 112 is less than a preset torque, and transmit a shut-off signal to the driving device 130 when the torque limiter 140 slips. Therefore, the packing self-pretightening system can automatically fasten the packing. When the set torque is reached, the torque limiter limits the transmission of the torque in a slipping manner, and the torque limiter can transmit the currently set torque while slipping.
In some examples, when the torque limiter 140 slips, the torque limiter 140 may initiate a slip signal to the controller 150; the controller 150, upon receiving the slip signal, may send a shutdown signal to the drive 130.
In some examples, as shown in fig. 3, the packing monitoring apparatus 110 also includes a packing weep monitor 114, the packing weep monitor 114 configured to monitor whether the packing 210 is weeping. Therefore, the packing self-pretightening system can also monitor whether the packing generates a liquid leakage phenomenon through the packing liquid leakage detector.
In some examples, as shown in fig. 3, the controller 150 is communicatively connected to the packing leakage monitor 114, and the controller 150 is configured to send an activation signal to the driving device 130 when the packing leakage monitor 114 detects a leakage phenomenon and the torque detected by the packing torque detector 112 is less than a preset torque, and send an alarm signal when the packing leakage monitor 114 detects a leakage phenomenon and the torque detected by the packing torque detector 112 is greater than or equal to the preset torque. Therefore, after the packing is fastened, the leakage phenomenon still exists, and the packing can send out an alarm signal from the pre-tightening system so that an operator can process the packing in time.
In some examples, as shown in fig. 3, in the packing self-tightening system 100, the second drive assembly 122 includes a one-way drive 1225; therefore, the damage of the driving device caused by the reverse action of the torque generated by the packing pressing cap and the transmission device or the driving device can be prevented. Of course, the disclosed embodiments include but are not limited to this, and the one-way transmission member may also be disposed in the first transmission assembly, i.e. the first transmission assembly includes the one-way transmission member.
Fig. 4 is a logic flow diagram of a packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 4, firstly, whether the packing is leaked or not can be monitored through the packing leakage monitor, and whether the packing is pre-tightened or not can be detected through the packing torque detector; when the packing does not leak and the packing is pre-tightened, controlling the packing leakage monitor to continuously monitor; when the packing does not leak and the packing is not pre-tightened, a starting signal can be sent to the driving device through the controller; when the packing is leaked and the packing is pre-tightened, alarming information is sent out; when the packing is leaked and the packing is not pre-tightened, a starting signal can be sent to the driving device through the controller. Then, after the controller sends a starting signal to the driving device, the driving device transmits torque to the packing pressing cap through the transmission device and the torque limiter so as to screw the packing pressing cap tightly, and the packing is fastened; then, whether the torque of the packing pressing cap reaches a preset torque or not can be judged through the packing torque detector and the torque limiter; when the torque of the packing pressing cap reaches a preset torque, a closing signal can be sent to the driving device through the controller, and monitoring is continuously carried out; when the torque of the packing pressing cap does not reach the preset torque, the driving device continues to transmit the torque to the packing pressing cap through the transmission device and the torque limiter.
In the embodiments of the present disclosure, the various controllers or controller modules described above may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different physical locations which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
Fig. 5 is a front view of a packing self-preloading system according to an embodiment of the present disclosure; fig. 6 is a side view of a packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 5 and 6, the first transmission assembly 121 includes a packing driver 121A connected to a packing gland 215; the second transmission assembly 122 includes a bar-shaped driving element 122A, the bar-shaped driving element 122A is connected to the driving device 130, the driving device 130 is configured to drive the bar-shaped driving element 122A to perform a linear motion, and the bar-shaped driving element 122A is configured to drive the packing driving element 121A to perform a rotational motion, so as to drive the packing cap 215 to screw. From this, this drive arrangement accessible strip driving piece and packing driving piece drive packing and press the cap to screw.
In some examples, as shown in fig. 5 and 6, the packing drive 121A includes a packing drive gear, the packing drive gear 121A being secured to the packing gland 215; at this time, the first transmission member 121 further includes a first torque transmission gear 121B, and the first torque transmission gear 121B is engaged with the packing drive gear 121A; the strip drive 122A comprises a drive rack and the second transmission 122 further comprises a one-way drive gear 1225, the drive rack 122A being in mesh with the one-way drive gear 1225. The torque limiter 140 is disposed between the one-way driving gear 1225 and the first torque transmission gear 121B, and is connected to the one-way driving gear 1225 and the first torque transmission gear 121B, respectively. From this, the driving rack 122A can drive the one-way driving gear 1225 to rotate, the one-way driving gear 1225 drives the first torque transmission gear 121B to rotate through the torque limiter 140, and the first torque transmission gear 121B can drive the packing driving gear 121A to rotate, so as to drive the packing gland 215 to rotate. Also, the torque limiter 140 may limit the torque transmitted from the one-way driving gear 1225 to the first torque transmission gear 121B.
In some examples, as shown in fig. 5 and 6, the drive device 130 may be a hydraulic cylinder or a pneumatic cylinder. Of course, the embodiments of the present disclosure include but are not limited thereto, and the driving device may be other driving devices as long as the driving device can drive the strip-shaped driving member to perform the linear motion.
Fig. 7 is a front view of another packing self-tightening system according to an embodiment of the present disclosure; fig. 8 is a side view of another packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 7 and 8, the first transmission assembly 121 includes a packing driver 121A connected to a packing gland 215; the second transmission assembly 122 includes a bar-shaped driving element 122A, the bar-shaped driving element 122A is connected to the driving device 130, the driving device 130 is configured to drive the bar-shaped driving element 122A to perform a linear motion, and the bar-shaped driving element 122A is configured to drive the packing driving element 121A to perform a rotational motion, so as to drive the packing cap 215 to screw. From this, this drive arrangement accessible strip driving piece and packing driving piece drive packing and press the cap to screw.
In some examples, as shown in fig. 7 and 8, the packing drive 121A includes a one-way packing drive gear, the one-way packing drive gear 121A being secured to the packing gland 215; the strip drive 122A includes a drive rack. The driving rack 122A is directly engaged with the one-way packing driving gear 121A, and the torque limiter 140 is disposed between the one-way packing driving gear 121A and the packing pressing cap 215 and connected to the one-way packing driving gear 121A and the packing pressing cap 215, respectively. From this, the driving rack 122A can drive the one-way packing driving gear 121A to rotate, and the one-way packing driving gear 121A drives the packing pressing cap 215 to rotate through the torque limiter 140. Also, the torque limiter 140 may limit the torque transmitted by the one-way packing drive gear 121A to the packing gland 215.
In some examples, as shown in fig. 7 and 8, the drive device 130 may be a hydraulic cylinder or a pneumatic cylinder. Of course, the embodiments of the present disclosure include but are not limited thereto, and the driving device may be other driving devices as long as the driving device can drive the strip-shaped driving member to perform the linear motion.
Fig. 9 is a front view of another packing self-tightening system according to an embodiment of the present disclosure; fig. 10 is a side view of another packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 9 and 10, the first transmission assembly 121 includes a packing driver 121A connected to a packing gland 215; the second transmission assembly 122 includes a bar-shaped driving element 122A, the bar-shaped driving element 122A is connected to the driving device 130, the driving device 130 is configured to drive the bar-shaped driving element 122A to perform a linear motion, and the bar-shaped driving element 122A is configured to drive the packing driving element 121A to perform a rotational motion, so as to drive the packing cap 215 to screw. From this, this drive arrangement accessible strip driving piece and packing driving piece drive packing and press the cap to screw.
In some examples, as shown in fig. 9 and 10, the packing drive 121A includes a one-way packing drive ratchet with a pawl 1215 on the one-way packing drive ratchet 121A, the one-way packing drive ratchet 121A secured with the packing gland 215; the strip driver 122A includes a pawl driver strip, the pawl driver strip 122A is connected to the packing drive ratchet 121A, and the torque limiter 140 is disposed between the packing drive ratchet 121A and the packing press cap 215 and is connected to the one-way packing drive ratchet 121A and the packing press cap 215, respectively. Therefore, the pawl driving bar 122A can drive the one-way packing driving ratchet 121A to rotate, and the one-way packing driving ratchet 121A drives the packing pressing cap 215 to rotate through the torque limiter 140. Also, the torque limiter 140 may limit the torque transmitted by the one-way packing drive ratchet 121A to the packing gland 215.
In some examples, as shown in fig. 9 and 10, the drive device 130 may be a hydraulic cylinder or a pneumatic cylinder. Of course, the embodiments of the present disclosure include but are not limited thereto, and the driving device may be other driving devices as long as the driving device can drive the strip-shaped driving member to perform the linear motion.
Fig. 11 is a front view of another packing self-tightening system according to an embodiment of the present disclosure; fig. 12 is a side view of another packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 11 and 12, the first transmission assembly 121 includes a packing drive gear 121A, the second transmission assembly 122 includes a second torque transmission gear 122C, the packing drive gear 121A and the second torque transmission gear 122C are engaged, the torque limiter 140 is disposed between the driving device 130 and the second torque transmission gear 122C and connected to the driving device 130 and the second torque transmission gear 122C, respectively, and the driving device 130 is configured to drive the second torque transmission gear 122C to rotate. Therefore, the driving device 130 can drive the second torque transmission gear 122C to rotate through the torque limiter 140, and the second torque transmission gear 122C can drive the packing driving gear 121A to rotate, so as to drive the packing pressing cap 215 to screw. Also, the torque limiter 140 may limit the torque transmitted by the drive device 130 to the second torque transmitting gear 122C.
In some examples, as shown in fig. 11 and 12, the drive device 130 may be an electric or hydraulic motor. Of course, the disclosed embodiments include but are not limited to this, and the driving device may also be other driving devices as long as the second torque transmission gear can be driven to rotate.
Fig. 13 is a front view of another packing self-tightening system according to an embodiment of the present disclosure; fig. 14 is a side view of another packing self-tightening system according to an embodiment of the present disclosure. As shown in fig. 13 and 14, the first transmission assembly 121 includes a packing drive sprocket 121C, the second transmission assembly 122 includes a packing drive chain 122D and a torque transmission sprocket 122E, the packing drive chain 122D is connected to the packing drive sprocket 121C and the torque transmission sprocket 122E, respectively, the torque limiter 140 is disposed between the driving device 130 and the torque transmission sprocket 122E and connected to the driving device 130 and the torque transmission sprocket 122E, respectively, and the driving device 130 is configured to drive the torque transmission sprocket 122E to rotate. From this, drive arrangement 130 accessible torque limiter 140 drives the moment of torsion transmission sprocket 122E rotatory, and moment of torsion transmission sprocket 122E can drive packing drive chain 122D rotatory, and packing drive chain 122D can drive packing drive sprocket 121C rotatory to it screws to drive packing pressure cap 215. Also, the torque limiter 140 may limit the torque transmitted by the drive device 130 to the torque transmitting sprocket 122E.
In some examples, as shown in fig. 13 and 14, the second drive assembly 122 further includes a tensioning sprocket 122F coupled to the packing drive chain 122D and configured to tension the packing drive chain 122D.
In some examples, as shown in fig. 13 and 14, the drive device 130 may be an electric or hydraulic motor. Of course, the disclosed embodiments include but are not limited to this, and the driving device may be other driving device as long as it can drive the torque transmission chain wheel to rotate.
The embodiment of the disclosure also provides a packing self-pre-tightening method. Fig. 15 is a schematic flow chart of a packing self-preloading method according to an embodiment of the present disclosure. As shown in fig. 15, the packing self-preloading method includes the following steps:
s101: the packing torque detector detects the torque of the packing pressing cap of the packing.
S102: when the torque detected by the packing torque detector is smaller than the preset torque, the driving device is started, and the packing pressing cap is screwed tightly through the transmission device; drive arrangement passes through transmission and presses the packing to cap and screw and include: the torque limiter limits the torque transmitted from the transmission device to the packing pressing cap.
S103: and when the torque detected by the packing torque detector is greater than or equal to the preset torque, closing the driving device.
In the packing self-pretightening method provided by the embodiment of the disclosure, on one hand, the packing self-pretightening system can detect the torque of the packing pressing cap through the packing torque detector, automatically judge whether the packing pressing cap is loosened, and can also tighten the packing pressing cap through the driving device and the transmission device, thereby providing a method for automatically fastening the packing. On the other hand, the packing self-pretightening system also avoids overlarge torque of the packing pressing cap through the torque limiter.
In some examples, the packing self-pretensioning method further comprises: when the torque limiter slips, the driving device is closed, so that overlarge torque of the packing pressing cap is avoided.
In some examples, the packing self-pretensioning method further comprises: monitoring whether the packing generates a liquid leakage phenomenon; when the leakage phenomenon is detected by the packing leakage monitor and the torque detected by the packing torque detector is smaller than the preset torque, the driving device is started and the packing pressing cap is screwed through the transmission device; and when the leakage phenomenon is detected by the packing leakage monitor and the torque detected by the packing torque detector is greater than or equal to the preset torque, an alarm signal is sent out. Therefore, after the packing is fastened, the leakage phenomenon still exists, and the packing self-pretightening method can send out an alarm signal so that an operator can process the packing in time.
In some examples, in the packing self-pretensioning method, the transmission comprises a one-way transmission. Therefore, the damage of the driving device caused by the reverse action of the torque generated by the packing pressing cap and the transmission device or the driving device can be prevented.
The following points need to be explained:
(1) in the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to general designs.
(2) Features of the disclosure in the same embodiment and in different embodiments may be combined with each other without conflict.
The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and shall be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (16)
1. The utility model provides a packing is from pretension system, wherein, the packing includes that the packing presses the cap, the packing includes from pretension system:
a packing monitoring device including a packing torque detector configured to detect a torque of the packing gland;
the transmission device comprises a first transmission assembly and a second transmission assembly, wherein the first transmission assembly is connected with the packing pressing cap and is configured to drive the packing pressing cap to rotate;
a drive device connected with the second transmission assembly and configured to drive the second transmission assembly; and
and the torque limiter is arranged between the first transmission assembly and the packing pressing cap, between the first transmission assembly and the second transmission assembly or between the second transmission assembly and the driving device.
2. The packing self-pretensioning system according to claim 1, further comprising:
a controller in communication connection with the packing torque detector, the driving device and the torque limiter respectively,
wherein the controller is configured to send a start signal to the driving device when the torque detected by the packing torque detector is less than a preset torque, and send a shut-off signal to the driving device when the torque limiter slips.
3. The packing self-pretensioning system according to claim 2, wherein the packing monitoring device further includes:
the packing leakage monitor is configured to monitor whether the packing generates a leakage phenomenon.
4. The packing self-preloading system as recited in claim 3, wherein the controller is communicatively connected with the packing leakage monitor, the controller is configured to send a start signal to the driving device when the packing leakage monitor detects a leakage and the packing torque detector detects a torque less than the preset torque, and send an alarm signal when the packing leakage monitor detects a leakage and the packing torque detector detects a torque greater than or equal to the preset torque.
5. The packing self-pretensioning system according to any of claims 1-4, wherein the first transmission assembly or the second transmission assembly includes a one-way transmission.
6. The packing self-pretensioning system according to any of claims 1-4, wherein the first transmission assembly includes a packing drive member coupled to the packing gland; the second transmission assembly comprises a strip-shaped driving piece, the strip-shaped driving piece is connected with the driving device, the driving device is configured to drive the strip-shaped driving piece to perform linear motion, and the strip-shaped driving piece is configured to drive the packing driving piece to perform rotary motion so as to drive the packing pressing cap to screw.
7. The packing self-pretensioning system according to claim 6, wherein the packing drive includes a packing drive gear fixed to the packing gland, the first transmission further including a first torque transmission gear that meshes with the packing drive gear;
the strip-shaped driving piece comprises a driving rack, the second transmission piece further comprises a one-way driving gear, and the driving rack is meshed with the one-way driving gear;
the torque limiter is disposed between the one-way driving gear and the first torque transmission gear, and is connected to the one-way driving gear and the first torque transmission gear, respectively.
8. The packing self-pretensioning system according to claim 6, wherein the packing drive member includes a one-way packing drive gear, the strip drive member includes a drive rack that engages with the one-way packing drive gear, and the torque limiter is disposed between and connected to the one-way packing drive gear and the packing press cap, respectively.
9. The packing self-pretensioning system according to claim 6, wherein the packing drive member includes a one-way packing drive ratchet fixed to the packing press cap, the strip drive member includes a pawl drive bar connected to the packing drive ratchet, and the torque limiter is disposed between and connected to the one-way packing drive ratchet and the packing press cap, respectively.
10. The packing self-pretensioning system according to any of claims 1-4, wherein the first transmission assembly includes a packing drive gear, the second transmission assembly includes a second torque transfer gear, the packing drive gear and the second torque transfer gear are in mesh, the torque limiter is disposed between and connected to the drive device and the second torque transfer gear, respectively, the drive device is configured to drive the second torque transfer gear to rotate.
11. The packing self-pretensioning system according to any of claims 1-4, wherein the first transmission assembly includes a packing drive sprocket, the second transmission assembly includes a packing drive chain and a torque transmission sprocket, the packing drive chain is connected to the packing drive sprocket and the torque transmission sprocket, respectively, the torque limiter is disposed between the drive device and the torque transmission sprocket and is connected to the drive device and the torque transmission sprocket, respectively, the drive device is configured to drive the torque transmission sprocket to rotate.
12. The packing self-pretensioning system according to any of claims 1-4, wherein the driving device includes at least one of an electric motor, a hydraulic cylinder, and a pneumatic cylinder.
13. A packing self-pretightening method comprises the following steps:
detecting the torque of a packing pressing cap of the packing through a packing torque detector;
when the torque detected by the packing torque detector is smaller than the preset torque, starting a driving device, and screwing the packing pressing cap through a transmission device;
when the torque detected by the packing torque detector is greater than or equal to the preset torque, the driving device is closed,
wherein, drive arrangement passes through transmission will the packing presses the cap to screw including: and limiting the torque transmitted to the packing pressing cap by the transmission device through a torque limiter.
14. The packing self-preloading method as recited in claim 13, further comprising:
when the torque limiter slips, the drive is turned off.
15. The packing self-preloading method as recited in claim 13, further comprising:
monitoring whether the packing generates a liquid leakage phenomenon;
when the packing leakage monitor detects leakage and the torque detected by the packing torque detector is smaller than the preset torque, the driving device is started and the packing pressing cap is screwed through the transmission device;
when the packing leakage monitor detects leakage and the torque detected by the packing torque detector is greater than or equal to the preset torque, an alarm signal is sent.
16. The packing self-preloading method as recited in any one of claims 13-15, wherein the transmission includes a one-way transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111401986.XA CN114109286A (en) | 2021-11-19 | 2021-11-19 | Packing self-pretightening system and method |
| PCT/CN2022/132403 WO2023088333A1 (en) | 2021-11-19 | 2022-11-17 | Packing self-pre-tightening system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111401986.XA CN114109286A (en) | 2021-11-19 | 2021-11-19 | Packing self-pretightening system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114109286A true CN114109286A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111401986.XA Pending CN114109286A (en) | 2021-11-19 | 2021-11-19 | Packing self-pretightening system and method |
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| Country | Link |
|---|---|
| CN (1) | CN114109286A (en) |
| WO (1) | WO2023088333A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023088333A1 (en) * | 2021-11-19 | 2023-05-25 | 烟台杰瑞石油服务集团股份有限公司 | Packing self-pre-tightening system and method |
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| CN211397528U (en) * | 2019-12-10 | 2020-09-01 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Automatic tight packing device |
| CN114109286A (en) * | 2021-11-19 | 2022-03-01 | 烟台杰瑞石油服务集团股份有限公司 | Packing self-pretightening system and method |
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- 2021-11-19 CN CN202111401986.XA patent/CN114109286A/en active Pending
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| US6318532B1 (en) * | 2000-06-23 | 2001-11-20 | Gkn Automotive, Inc. | Externally controlled hydraulic torque transfer device |
| CN103128539A (en) * | 2011-11-29 | 2013-06-05 | 陆亦群 | High-precision intelligentized rail fastener bolt wrench and operating method thereof |
| CN106382218A (en) * | 2016-11-30 | 2017-02-08 | 潍坊胜利石化机械有限公司 | Automatic packaging fastening device |
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| Publication number | Publication date |
|---|---|
| WO2023088333A1 (en) | 2023-05-25 |
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