CN114458568A - Slurry pump packing sealing structure for petroleum drilling and sealing method thereof - Google Patents
Slurry pump packing sealing structure for petroleum drilling and sealing method thereof Download PDFInfo
- Publication number
- CN114458568A CN114458568A CN202210092153.8A CN202210092153A CN114458568A CN 114458568 A CN114458568 A CN 114458568A CN 202210092153 A CN202210092153 A CN 202210092153A CN 114458568 A CN114458568 A CN 114458568A
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- compression piece
- mud pump
- sealing
- intermediate rod
- culvert
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- 238000007789 sealing Methods 0.000 title claims abstract description 109
- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 238000012856 packing Methods 0.000 title claims abstract description 22
- 239000002002 slurry Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 13
- 239000003208 petroleum Substances 0.000 title abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 152
- 230000006835 compression Effects 0.000 claims abstract description 151
- 238000003825 pressing Methods 0.000 claims abstract 9
- 238000001035 drying Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 206010040007 Sense of oppression Diseases 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a slurry pump packing sealing structure for petroleum drilling, which comprises a casing: the left side of the sleeve is provided with a first pressing sheet, a second pressing sheet and a third pressing sheet, the right sides of the first pressing sheet, the second pressing sheet and the third pressing sheet are movably installed on the sleeve through rotating shafts, and a locking threaded sleeve is installed on the surface of the sleeve in a threaded mode. According to the mud pump intermediate rod structure, when the intermediate rod works, the intermediate rod rotates in the inner cavity of the sealing culvert, the first compression plate, the second compression plate and the third compression plate can compress the sealing culvert on the surface of the mud pump intermediate rod, the sealing culvert can deform and cling to the surface of the mud pump intermediate rod, even if the mud pump intermediate rod generates abrasion on the sealing culvert in high-speed rotation, gaps can be enlarged, the sealing culvert can recover to an original state from a state of being compressed and deformed, therefore, the inner wall of the sealing culvert can cling to the surface of the mud pump intermediate rod all the time to fill the gaps generated by abrasion, and the sealing performance between the sealing culvert and the mud pump intermediate rod is guaranteed.
Description
Technical Field
The invention belongs to the technical field of slurry pumps, and particularly relates to a slurry pump packing sealing structure for petroleum drilling and a sealing method thereof.
Background
The mud pump, it is the machinery to convey flushing fluid such as mud or water to the borehole in the course of drilling, the mud pump is the important component of the drilling equipment, the mud pump in the normal cycle drilling commonly used, it is to pass the flushing fluid of the ground surface-rinsing medium-clear water, mud or polymer under certain pressure, the bottom end of the straight bit of centre bore of the high-pressure hose, faucet and drilling rod column, in order to achieve the purpose of cooling the bit, clear away and convey the detritus cut off to the ground surface, the commonly used mud pump is piston or plunger type, drive the crankshaft of the pump to rotate by the power machine, the crankshaft drives the piston or plunger to reciprocate in the cylinder through the crosshead, under the alternate action of sucking and discharge valve, achieve the purpose of forced feeding and circulating flushing fluid, the idle rod on the mud pump will produce the abrasion in the use of high-speed rotation for a long time, cause the sealed box (sealed culvert) to produce the abrasion and loosen, and then lead to the clearance between seal box (sealed culvert) and the jie's pole bigger and bigger, lead to the leakproofness to worsen at last, influence the performance of seal box (sealed culvert) performance, need after using a period, the user regularly examines, this not only has increased staff's energy consumption, but also can influence the life of slush pump, even postpones the construction progress.
Disclosure of Invention
The invention aims to provide a slurry pump packing sealing structure for petroleum drilling and a sealing method thereof, and aims to solve the technical problems that a medium rod on a slurry pump is abraded in long-time high-speed rotation use, so that a sealing box (a sealing culvert) is abraded and loosened, further, a gap between the sealing box (the sealing culvert) and the medium rod is larger and larger, finally, the sealing performance is poor, the performance of the sealing box (the sealing culvert) is influenced, a user needs to regularly check after using for a period of time, the energy consumption of workers is increased, the service life of the slurry pump is influenced, and even the construction progress is delayed.
The technical scheme for solving the technical problems is as follows: mud pump packing seal structure for oil drilling includes the sleeve pipe: the left side of the sleeve is provided with a first compression sheet, a second compression sheet and a third compression sheet, the right sides of the first compression sheet, the second compression sheet and the third compression sheet are movably arranged on the sleeve through a rotating shaft, the surface of the sleeve is provided with a locking thread sleeve in a threaded manner, the locking thread sleeve is matched with the first compression sheet, the second compression sheet and the compression sheet in a three-phase manner, a sealing culvert is arranged among the first compression plate, the second compression plate and the third compression plate, two arc-shaped grooves are respectively arranged on the inner sides of the first compression plate, the second compression plate and the third compression plate, one side of the inner cavity of the arc-shaped groove is fixedly connected with a fixed pipe, the inner cavity of the fixed pipe is provided with a sliding block in a sliding way, one end of the sliding block is fixedly connected with a first spring, one end of the first spring is fixedly connected on the inner wall of the fixed pipe, the one end fixedly connected with card of sliding block, the one end of oppression piece one, oppression piece two and three inboard one ends of oppression piece all are provided with the cambered surface.
Preferably, two embedded grooves are formed in the outer side of the sealing culvert, and elastic lantern rings are sleeved in inner cavities of the embedded grooves.
Preferably, the inner side of the elastic lantern ring is provided with a first magnetic block, a second magnetic block is filled in the sliding block, and the first compression piece, the second compression piece and the third compression piece are formed by dividing a whole circle into three equal parts.
Preferably, a mud pump intermediate rod is arranged inside the sleeve, the sleeve is sleeved on the surface of the mud pump intermediate rod, and the sealing culvert is sleeved on the surface of the mud pump intermediate rod.
Preferably, the left side of the surface of the sleeve is provided with an external thread matched with the locking thread sleeve, and the external thread occupies one half of the surface of the sleeve.
Preferably, one side of the surface of the locking threaded sleeve is provided with a bearing, the surface of the bearing is provided with a second lantern ring, and the second lantern ring is movably arranged on the outer side of the locking threaded sleeve through the bearing.
Preferably, a first lantern ring is fixedly installed on one side of the surface of the sleeve, and sliding pipes penetrate through the top and the bottom of one side of the first lantern ring.
Preferably, the top and the bottom of one side of the lantern ring are both fixedly connected with a connecting frame, one end of the sliding pipe is fixedly connected to the outer side of the lantern ring II, and the inner cavity of the sliding pipe is slidably connected with a sliding rod.
Preferably, the one end of slide bar stretches out the inner chamber and the fixed connection of slide tube in the inboard of link, the other end fixedly connected with limit slide of slide bar, the surface cover of slide bar is equipped with spring two, the both ends of spring two are fixed connection respectively on limit slide and link, the inside of slide tube is seted up with the spacing slip chamber of limit slide adaptation.
The sealing method of the slurry pump packing sealing structure for petroleum drilling comprises the following sealing steps:
firstly, cleaning the surface of a mud pump intermediate rod, washing away mud on the surface of the mud pump intermediate rod by using clear water during cleaning, then repeatedly brushing the surface of the mud pump intermediate rod by using a brush, wherein the corners and dead corners on the mud pump intermediate rod are brushed cleanly, and finally, the surface of the mud pump intermediate rod is washed cleanly by using clear water;
secondly, the mud pump intermediate rod which is washed clean is placed aside to be dried until no water exists on the surface of the mud pump intermediate rod, and before drying, the water on the surface of the mud pump intermediate rod can be wiped clean, so that the drying speed can be increased, and the drying time can be shortened (in order to save time and improve efficiency, drying equipment can be used for drying the mud pump intermediate rod, for example, a blower and other equipment are used for drying the water on the surface of the mud pump intermediate rod);
and thirdly, fixedly mounting the sleeve on the surface of the mud pump intermediate rod, and welding the sleeve according to actual construction requirements, or fixing the sleeve on the mud pump intermediate rod by adopting an adhesive mode.
After the sleeve in the third step is sleeved, sleeving the sealing culvert on a mud pump intermediate rod, and pushing the sealing culvert to be clamped into the inner sides of the first compression piece, the second compression piece and the third compression piece, so that the first compression piece, the second compression piece and the third compression piece wrap the sealing culvert, and the elastic sleeve ring is clamped in the inner cavity of the embedded groove before the sealing culvert is sleeved;
fifthly, after the sealing culvert in the fourth step is sleeved, a user rotates the locking threaded sleeve, the locking threaded sleeve moves towards the left side of the sleeve, and because the outer sides of the first compression piece, the second compression piece and the third compression piece are also provided with external threads matched with the locking threaded sleeve, the locking threaded sleeve moves to the surfaces of the first compression piece, the second compression piece and the third compression piece, the first compression piece, the second compression piece and the third compression piece can be contracted together under the fastening action of the locking threaded sleeve, and the first compression piece, the second compression piece and the third compression piece are closed into a full circle state from the original open state, so that the locking threaded sleeve is sleeved on the mud pump intermediate rod;
sixthly, in the process that the compression piece I, the compression piece II and the compression piece III are tightened, the compression piece presses the sealing culvert for a while to enable the sealing culvert to be flattened and deformed, so that the contact area of the sealing culvert and the mud pump intermediate rod is increased, and the sealing culvert is tightly attached to the surface of the mud pump intermediate rod after being pressed by the compression piece I, the compression piece II and the compression piece III, so that the sealing performance is ensured;
seventhly, when the first compression piece, the second compression piece and the third compression piece compress the sealed culvert, the sliding block slides to the inner cavity of the fixed pipe under the action of the reaction force, the first compression spring is used, the card is clamped on the surface of the elastic sleeve ring, then when the first compression piece, the second compression piece and the third compression piece are sleeved on the sealed culvert and do not move any more, the sliding block slides to the deep part of the inner cavity of the fixed pipe and can not slide under the action of the obstruction, so that the elastic sleeve ring can be extruded and deformed, thereby expanding the inner cavity of the embedded groove, enabling the inner cavity of the embedded groove to deform, enabling the elastic sleeve ring to be firmly clamped in the inner cavity of the embedded groove, when the card is obstructed by the first magnetic block, the elastic sleeve ring can not continue to deform, meanwhile, the second magnetic block can generate a repulsive force with the first magnetic block, and then firmly clamping the first magnetic block in the embedded groove, under the effect of the elastic lantern ring and the first magnetic block, extrusion is generated from the inside of the sealing culvert, the contact area of the sealing culvert and the mud pump idle rod is increased, the fitting degree of the sealing culvert and the mud pump idle rod is improved, and therefore the sealing performance is improved.
1. The invention has the beneficial effects that: in the invention, in the actual use process, when the intermediate rod works, the intermediate rod rotates in the inner cavity of the sealing culvert, the first compression plate, the second compression plate and the third compression plate compress the sealing culvert on the surface of the slurry pump intermediate rod, and in the compression process, the sealing culvert deforms and clings to the surface of the slurry pump intermediate rod, even if the slurry pump intermediate rod generates abrasion to the sealing culvert in high-speed rotation, the gap between the sealing culvert and the slurry pump intermediate rod is increased, at the moment, the sealing culvert recovers to the original state from the compressed and deformed state, so that the inner wall of the sealing culvert is always clings to the surface of the slurry pump intermediate rod to fill the gap generated by the abrasion, thereby ensuring the sealing property between the sealing culvert and the slurry pump intermediate rod, and the slurry pump packing sealing structure and the sealing method thereof for petroleum aim to solve the problem that the intermediate rod on the slurry pump generates abrasion in long-time high-speed rotation use, lead to seal box (sealed culvert) to produce wearing and tearing and not hard up, and then lead to seal box (sealed culvert) and the clearance between the jie pole bigger and bigger, lead to the leakproofness variation at last, influence the performance of seal box (sealed culvert) performance, need use a period of time after, the user regularly checks, this energy consumption that has not only increased the staff, but also can influence the life of slush pump, the technical problem who delays the construction progress even.
2. According to the mud pump intermediate rod, the magnetic block II and the magnetic block II are in a repulsive state, so that the sealing culvert can be firmly sleeved on the mud pump intermediate rod from the inside of the sealing culvert under the cooperation of the elastic lantern ring, and the sealing performance and the sealing effect are improved.
Drawings
The above and/or other advantages of the invention will become more apparent and more readily appreciated from the following detailed description taken in conjunction with the accompanying drawings, which are given by way of illustration only and not by way of limitation, and in which:
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional front view of an embodiment of the present invention;
FIG. 3 is a perspective view of a cannula according to one embodiment of the present invention;
FIG. 4 is an enlarged partial view of A in FIG. 2 according to an embodiment of the present invention;
fig. 5 is a partially enlarged view of B in fig. 2 according to an embodiment of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. slurry pump jie pole, 2, sleeve pipe, 3, lantern ring I, 4, locking thread bush, 5, lantern ring II, 6, oppression piece I, 7, bearing, 8, pivot, 9, sealed culvert, 10, arc recess, 11, fixed pipe, 12, sliding block, 13, spring I, 14, card, 15, embedded groove, 16, elastic lantern ring, 17, link, 18, sliding pipe, 19, slide bar, 20, spacing slider, 21, spring II, 22, spacing sliding cavity, 23, magnetic block I, 24, magnetic block II, 25, oppression piece II, 26, oppression piece III, 27, cambered surface.
Detailed Description
Hereinafter, embodiments of a packing structure of a mud pump for oil drilling and a sealing method thereof according to the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
Fig. 1 to 5 show a packing seal structure of a mud pump for oil drilling according to an embodiment of the present invention, which includes a casing 2: the left side of the casing 2 is provided with a first compression piece 6, a second compression piece 25 and a third compression piece 26, the right sides of the first compression piece 6, the second compression piece 25 and the third compression piece 26 are movably arranged on the casing 2 through a rotating shaft 8, the surface of the casing 2 is provided with a locking threaded sleeve 4, the locking threaded sleeve 4 is matched with the first compression piece 6, the second compression piece 25 and the third compression piece 26, a sealing culvert 9 is arranged between the first compression piece 6, the second compression piece 25 and the third compression piece 26, the inner sides of the first compression piece 6, the second compression piece 25 and the third compression piece 26 are respectively provided with two arc-shaped grooves 10, one side of the inner cavity of each arc-shaped groove 10 is fixedly connected with a fixed pipe 11, the inner cavity of the fixed pipe 11 is provided with a sliding block 12 in a sliding manner, one end of the sliding block 12 is fixedly connected with a first spring 13, one end of the first spring 13 is fixedly connected on the inner wall of the fixed pipe 11, one end of the sliding block 12 is fixedly connected with a clamping piece 14, the inner sides of the first compression piece 6, the second compression piece 25 and the third compression piece 26 are provided with cambered surfaces 27 at one ends, the outer side of the sealing culvert 9 is provided with two embedded grooves 15, an elastic sleeve ring 16 is sleeved in an inner cavity of each embedded groove 15, a first magnetic block 23 is arranged on the inner side of the elastic sleeve ring 16, a second magnetic block 24 is filled in the sliding block 12, the first magnetic block 23 and the second magnetic block 24 are in a repulsive state through the arrangement of the second magnetic block 24 and the first magnetic block 23, and further the sealing culvert 9 can be firmly sleeved on the mud pump intermediate rod 1 from the inside of the sealing culvert 9 under the cooperation of the elastic sleeve ring 16, so that the sealing performance and the sealing effect are improved, the first compression piece 6, the second compression piece 25 and the third compression piece 26 are formed by dividing a whole circle into three equal parts, the mud pump intermediate rod 1 is arranged inside the sleeve 2, the sleeve 2 is sleeved on the surface of the intermediate rod 1, and the mud pump 9 is sleeved on the surface of the intermediate rod 1, the left side of the surface of the sleeve 2 is provided with an external thread matched with the locking threaded sleeve 4, the external thread occupies one half of the surface of the sleeve 2, one side of the surface of the locking threaded sleeve 4 is provided with a bearing 7, the surface of the bearing 7 is provided with a lantern ring two 5, the lantern ring two 5 is movably arranged at the outer side of the locking threaded sleeve 4 through the bearing 7, one side of the surface of the sleeve 2 is fixedly provided with a lantern ring one 3, the top and the bottom of one side of the lantern ring one 3 are both provided with a sliding pipe 18 in a penetrating way, the top and the bottom of one side of the lantern ring one 3 are both fixedly connected with a connecting frame 17, one end of the sliding pipe 18 is fixedly connected at the outer side of the lantern ring two 5, the inner cavity of the sliding pipe 18 is connected with a sliding rod 19 in a sliding way, one end of the sliding rod 19 extends out of the inner cavity of the sliding pipe 18 and is fixedly connected at the inner side of the connecting frame 17, the other end of the sliding rod 19 is fixedly connected with a limiting slide block 20, and the surface of the sliding rod 19 is sleeved with a spring two 21, two ends of the second spring 21 are respectively and fixedly connected to the limiting slide block 20 and the connecting frame 17, and a limiting slide cavity 22 matched with the limiting slide block 20 is formed in the slide tube 18.
The sealing method of the slurry pump packing sealing structure for petroleum drilling comprises the following sealing steps:
firstly, cleaning the surface of a mud pump intermediate rod 1, washing away mud on the surface of the mud pump intermediate rod 1 by using clean water during cleaning, then repeatedly brushing the surface of the mud pump intermediate rod 1 by using a brush, wherein the corners and dead corners on the mud pump intermediate rod 1 need to be brushed clean, and finally, washing the surface of the mud pump intermediate rod 1 by using clean water;
secondly, the mud pump intermediate rod 1 which is washed clean is placed aside to be dried until no water exists on the surface of the mud pump intermediate rod 1, the water on the surface of the mud pump intermediate rod 1 can be wiped clean before drying, so that the drying speed can be increased, the drying time can be shortened, the time can be saved, the efficiency can be improved, and drying equipment can be used for drying the mud pump intermediate rod 1, for example, equipment such as a blower is used for drying the water on the surface of the mud pump intermediate rod 1;
thirdly, fixedly installing the sleeve 2 on the surface of the mud pump intermediate rod 1, and welding the sleeve 2 according to actual construction requirements, or fixing the sleeve 2 on the mud pump intermediate rod 1 in a bonding agent mode;
after the sleeve 2 in the third step is sleeved, sleeving the sealing culvert 9 on the mud pump intermediate rod 1, and pushing the sealing culvert 9 to be clamped into the inner sides of the first compression piece 6, the second compression piece 25 and the third compression piece 26, so that the first compression piece 6, the second compression piece 25 and the third compression piece 26 wrap the sealing culvert 9, and it needs to be noted that before the sealing culvert 9 is sleeved, the elastic sleeve ring 16 is clamped in the inner cavity of the embedded groove 15;
fifthly, after the sealing culvert 9 in the fourth step is well sleeved, a user rotates the locking threaded sleeve 4, the locking threaded sleeve 4 moves towards the left side of the sleeve 2, and because the outer sides of the first compression piece 6, the second compression piece 25 and the third compression piece 26 are also provided with external threads matched with the locking threaded sleeve 4, the locking threaded sleeve 4 moves to the surfaces of the first compression piece 6, the second compression piece 25 and the third compression piece 26, the first compression piece 6, the second compression piece 25 and the third compression piece 26 are compressed together under the fastening action of the locking threaded sleeve 4, and are closed into a full circle state from the original opening state, so that the locking threaded sleeve is sleeved on the slurry pump intermediate rod 1;
sixthly, in the process that the first compression sheet 6, the second compression sheet 25 and the third compression sheet 26 are compressed, the first compression sheet 6 can compress the sealing culvert 9, so that the sealing culvert 9 is flattened and deformed, the contact area between the sealing culvert 9 and the mud pump intermediate rod 1 is increased, and the sealing culvert is tightly attached to the surface of the mud pump intermediate rod 1 after being compressed by the first compression sheet 6, the second compression sheet 25 and the third compression sheet 26, so that the sealing performance is ensured;
seventhly, when the first compression piece 6, the second compression piece 25 and the third compression piece 26 compress the sealed culvert 9, the sliding block 12 slides to the inner cavity of the fixed pipe 11 under the action of the reaction force, the first compression spring 13 compresses the card 14 clamped on the surface of the elastic sleeve ring 16, then when the first compression piece 6, the second compression piece 25 and the third compression piece 26 are sleeved on the sealed culvert 9 and do not move any more, the sliding block 12 slides to the deep part of the inner cavity of the fixed pipe 11 and can be blocked and can not slide, so that the elastic sleeve ring 16 is extruded and deformed, the elastic sleeve ring 16 is also deformed, so that the inner cavity of the embedded groove 15 is expanded, the inner cavity of the embedded groove 15 is also deformed, at the moment, the elastic sleeve ring 16 can be firmly clamped in the inner cavity of the embedded groove 15, when the card 14 is blocked by the first magnetic block 23, the elastic sleeve ring 16 can not be deformed continuously, and meanwhile, the second compression piece 24 can generate repulsion force with the first magnetic block 23, then, the first magnetic block 23 is firmly clamped in the embedded groove 15, and under the action of the elastic lantern ring 16 and the first magnetic block 23, extrusion is generated from the inside of the sealing culvert 9, so that the contact area between the sealing culvert 9 and the mud pump intermediate rod 1 is increased, the fitting degree between the sealing culvert 9 and the mud pump intermediate rod 1 is improved, and the sealing performance is improved.
The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention, so as to achieve the purpose of the invention.
Claims (10)
1. Mud pump packing seal structure for oil drilling is characterized by comprising a casing (2): the left side of the sleeve (2) is provided with a first compression piece (6), a second compression piece (25) and a third compression piece (26), the right sides of the first compression piece (6), the second compression piece (25) and the third compression piece (26) are movably mounted on the sleeve (2) through a rotating shaft (8), a locking thread sleeve (4) is mounted on the surface of the sleeve (2) in a threaded manner, the locking thread sleeve (4) is matched with the first compression piece (6), the second compression piece (25) and the third compression piece (26), a sealing culvert (9) is arranged between the first compression piece (6), the second compression piece (25) and the third compression piece (26), two arc-shaped grooves (10) are formed in the inner sides of the first compression piece (6), the second compression piece (25) and the third compression piece (26), one side of the inner cavity of each arc-shaped groove (10) is fixedly connected with a fixed pipe (11), and a sliding block (12) is slidably mounted in the inner cavity of the fixed pipe (11), one end fixedly connected with spring (13) of sliding block (12), the one end fixed connection of spring (13) is on the inner wall of fixed pipe (11), the one end fixedly connected with card (14) of sliding block (12), the inboard one end of oppression piece (6), oppression piece two (25) and oppression piece three (26) all is provided with cambered surface (27).
2. The packing sealing structure of the mud pump for the oil drilling as recited in claim 1, wherein two embedded grooves (15) are formed on the outer side of the sealing culvert (9), and an elastic collar (16) is sleeved in the inner cavity of each embedded groove (15).
3. The packing seal structure of the mud pump for oil drilling according to claim 2, wherein the inner side of the elastic sleeve ring (16) is provided with a first magnetic block (23), the inner part of the sliding block (12) is filled with a second magnetic block (24), and the first pressing plate (6), the second pressing plate (25) and the third pressing plate (26) are formed by dividing a whole circle into three equal parts.
4. The packing sealing structure of the mud pump for the oil drilling is characterized in that a mud pump intermediate rod (1) is arranged inside the casing (2), the casing (2) is sleeved on the surface of the mud pump intermediate rod (1), and the sealing culvert (9) is sleeved on the surface of the mud pump intermediate rod (1).
5. The packing seal structure of the mud pump for oil drilling according to claim 4, characterized in that the left side of the surface of the casing (2) is provided with an external thread adapted to the locking thread bushing (4), the external thread occupying half of the surface of the casing (2).
6. The packing sealing structure of the mud pump for the oil drilling is characterized in that a bearing (7) is arranged on one side of the surface of the locking threaded sleeve (4), a second lantern ring (5) is arranged on the surface of the bearing (7), and the second lantern ring (5) is movably arranged on the outer side of the locking threaded sleeve (4) through the bearing (7).
7. The packing structure of the mud pump for the oil drilling is characterized in that a first collar (3) is fixedly installed on one side of the surface of the casing (2), and a sliding pipe (18) penetrates through the top and the bottom of one side of the first collar (3).
8. The packing sealing structure of the mud pump for the oil drilling is characterized in that the top and the bottom of one side of the first lantern ring (3) are fixedly connected with a connecting frame (17), one end of the sliding pipe (18) is fixedly connected to the outer side of the second lantern ring (5), and the inner cavity of the sliding pipe (18) is slidably connected with a sliding rod (19).
9. The packing sealing structure of the mud pump for the oil drilling as recited in claim 5, wherein one end of the sliding rod (19) extends out of the inner cavity of the sliding tube (18) and is fixedly connected to the inner side of the connecting frame (17), the other end of the sliding rod (19) is fixedly connected with a limiting slider (20), a second spring (21) is sleeved on the surface of the sliding rod (19), two ends of the second spring (21) are respectively and fixedly connected to the limiting slider (20) and the connecting frame (17), and a limiting sliding cavity (22) matched with the limiting slider (20) is formed inside the sliding tube (18).
10. The sealing method of the mud pump packing sealing structure for the oil drilling is applied to the mud pump packing sealing structure for the oil drilling as claimed in any one of claims 1 to 9, and is characterized in that the sealing step is as follows:
firstly, cleaning the surface of a mud pump intermediate rod (1), wherein during cleaning, clear water is used for washing away mud on the surface of the mud pump intermediate rod (1), then a brush is used for repeatedly brushing the surface of the mud pump intermediate rod (1), the corners and dead corners on the mud pump intermediate rod (1) need to be brushed cleanly, and finally the surface of the mud pump intermediate rod (1) is washed cleanly by the clear water;
secondly, the mud pump intermediate rod (1) which is washed clean is placed aside to be dried until no water exists on the surface of the mud pump intermediate rod (1), and before drying, the water on the surface of the mud pump intermediate rod (1) can be wiped clean, so that the drying speed can be increased, the drying time can be shortened (in order to save time and improve efficiency, drying equipment can be used for drying the mud pump intermediate rod (1), and for example, the water on the surface of the mud pump intermediate rod (1) can be dried by using equipment such as a blower and the like);
thirdly, fixedly installing the sleeve (2) on the surface of the mud pump intermediate rod (1), and welding the sleeve (2) according to actual construction requirements, or fixing the sleeve (2) on the mud pump intermediate rod (1) in an adhesive manner;
fourthly, after the sleeve (2) in the third step is sleeved, sleeving the sealing culvert (9) on the mud pump intermediate rod (1), and pushing the sealing culvert (9) to be clamped into the inner sides of the first compression piece (6), the second compression piece (25) and the third compression piece (26), so that the first compression piece (6), the second compression piece (25) and the third compression piece (26) can wrap the sealing culvert (9), and the elastic sleeve ring (16) is clamped in the inner cavity of the embedded groove (15) before the sealing culvert (9) is sleeved;
fifthly, after the sealing culvert (9) in the fourth step is well sleeved, a user rotates the locking threaded sleeve (4), the locking threaded sleeve (4) can move towards the left side of the sleeve (2), and because the outer sides of the first compression piece (6), the second compression piece (25) and the third compression piece (26) are also provided with external threads matched with the locking threaded sleeve (4), the locking threaded sleeve (4) can move to the surfaces of the first compression piece (6), the second compression piece (25) and the third compression piece (26), under the fastening action of the locking threaded sleeve (4), the first compression piece (6), the second compression piece (25) and the third compression piece (26) can be compressed together, and are closed into a full circle state from the original opening state, so that the locking threaded sleeve is sleeved on the slurry pump intermediate rod (1);
sixthly, in the process of shrinking the compression piece I (6), the compression piece II (25) and the compression piece III (26), the compression piece I (6) can compress the sealing culvert (9), so that the sealing culvert (9) is flattened and deformed, the contact area of the sealing culvert (9) and the mud pump intermediate rod (1) can be increased, and after the compression piece I (6), the compression piece II (25) and the compression piece III (26) are compressed, the sealing culvert can be tightly attached to the surface of the mud pump intermediate rod (1), so that the sealing performance is ensured;
seventhly, when the first compression piece (6), the second compression piece (25) and the third compression piece (26) compress the sealed culvert (9), the sliding block (12) can slide towards the inner cavity of the fixed pipe (11) under the action of a reaction force, the first compression spring (13) is clamped on the surface of the elastic sleeve ring (16), then when the first compression piece (6), the second compression piece (25) and the third compression piece (26) are sleeved on the sealed culvert (9) and do not move any more, the sliding block (12) slides to the deep part of the inner cavity of the fixed pipe (11) and can not slide under the resistance, so that the elastic sleeve ring (16) can be extruded, the elastic sleeve ring (16) can also deform, the inner cavity of the embedded groove (15) is expanded, the inner cavity of the embedded groove (15) can also deform, and at the moment, the elastic sleeve ring (16) can be firmly clamped in the inner cavity of the embedded groove (15), when the card (14) is hindered by the first magnetic block (23), the elastic sleeve ring (16) cannot be deformed continuously, the second magnetic block (24) and the first magnetic block (23) can generate repulsive force, then the first magnetic block (23) is firmly clamped in the embedded groove (15), extrusion is generated from the inside of the sealing culvert (9) under the action of the elastic sleeve ring (16) and the first magnetic block (23), the contact area of the sealing culvert (9) and the mud pump intermediate rod (1) is increased, the fitting degree of the sealing culvert (9) and the mud pump intermediate rod (1) is improved, and therefore the sealing performance is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092153.8A CN114458568B (en) | 2022-01-26 | 2022-01-26 | Packing sealing structure and sealing method for slurry pump for petroleum drilling |
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|---|---|---|---|
| CN202210092153.8A CN114458568B (en) | 2022-01-26 | 2022-01-26 | Packing sealing structure and sealing method for slurry pump for petroleum drilling |
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| CN114458568B CN114458568B (en) | 2023-10-24 |
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Cited By (1)
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| CN116424765A (en) * | 2023-06-13 | 2023-07-14 | 山西溢达科技有限公司 | Self-sealing full-automatic hydraulic testing machine |
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| CN116424765B (en) * | 2023-06-13 | 2023-08-11 | 山西溢达科技有限公司 | Self-sealing full-automatic hydraulic testing machine |
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|---|---|
| CN114458568B (en) | 2023-10-24 |
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