CN111075438A - Novel large-displacement pulse generator - Google Patents
Novel large-displacement pulse generator Download PDFInfo
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- CN111075438A CN111075438A CN202010109863.8A CN202010109863A CN111075438A CN 111075438 A CN111075438 A CN 111075438A CN 202010109863 A CN202010109863 A CN 202010109863A CN 111075438 A CN111075438 A CN 111075438A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 22
- 239000002002 slurry Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a novel large-displacement pulse generator which comprises a fixed shield, wherein a fixed frame is arranged on the inner side of the fixed shield, the fixed frame is fixedly connected with the fixed shield, a first limiting sleeve is arranged on the upper end surface of the fixed frame, the first limiting sleeve is fixedly connected with the fixed frame, the bottom end of the inner part of the first limiting sleeve is fixedly connected with a second limiting sleeve, a reset spring is sleeved on the outer side of the second limiting sleeve, and a movable sleeve is sleeved on the outer side of the first limiting sleeve. Through mutually supporting between the first limiting sleeve that sets up, the limiting sleeve of second and the activity external member, can prevent that the condition of jam from appearing in the in-process of kick-backing of main valve head, the activity external member that sets up simultaneously can let main valve head easily maintain and install more, through the sealing washer and the sealed fastener that set up, can prevent that mud from entering into the inside of activity external member to the rebound process that can let main valve head is more stable.
Description
Technical Field
The invention relates to the technical field of pulse generators, in particular to a novel large-displacement pulse generator.
Background
The pulse generator is used for generating a signal and generating an electric test signal instrument with required parameters, wherein the mud is a positive pulse generator which is a communication tool between a downhole combined instrument and ground equipment in a logging-while-drilling system, the communication is realized by utilizing small pressure pulses generated in a mud column circulating in a drill rod, the mud flows back and continuously downwards along the center of the drill rod to reach a drill bit in the drilling process, the drill bit is cooled and rock debris is upwards washed to a mud pit on the ground, and the data communication mainly modulates the pressure of the mud so that the ground system can measure and decode the mud.
The applicant of the present invention finds that during the drilling operation, high-pressure mud flows into the lower part of the power piston through the hollow main shaft, and due to the pressure difference and the unequal pressure-receiving areas, the mud pushes the power piston to drive the valve head to move upwards, so as to generate positive pressure pulses on the main valve head.
Disclosure of Invention
The invention aims to provide a novel large-displacement pulse generator, aiming at solving the problem that high-pressure slurry flows into the lower part of a power piston through a hollow main shaft in the process of drilling operation, the slurry pushes the power piston to drive a valve head to move upwards due to pressure difference and unequal pressure area, and positive pressure pulse is generated on the main valve head, but in the actual process, the normal rebound of the main valve head is influenced because the slurry is blocked in the rebound process, so that the normal feedback of data is influenced.
The invention is realized by the following steps:
a novel large-displacement pulse generator comprises a fixed protective cover, wherein a fixed frame is arranged on the inner side of the fixed protective cover and fixedly connected with the fixed protective cover, and the upper end surface of the fixed frame is provided with a first limit sleeve which is fixedly connected with the fixed frame, and the inside bottom fixedly connected with second limit sleeve of first limit sleeve, reset spring has been cup jointed in the outside of second limit sleeve, the activity external member has been cup jointed in the outside of first limit sleeve, the bottom of activity external member is provided with sealed fastener, sealed fastener passes through screw-thread fit fixed connection with the activity external member, the inboard of sealed fastener passes through joint mode fixedly connected with sealing washer, the other end of activity external member is provided with the main valve head, main valve head and activity external member pass through screw-thread fit fixed connection, the one end of fixed guard shield is provided with the guard shield and connects, the guard shield connects and passes through screw-thread fit fixed connection with fixed guard shield.
Furthermore, the outer side surface of the fixed shield is provided with a connecting seat, the connecting seat is fixedly connected with the fixed shield, the connecting seat is distributed at equal intervals around the axis of the fixed shield, the top end of the fixed shield is provided with a connecting head, the connecting head is fixedly connected with the fixed shield, the upper end surface of the fixed frame is provided with a shunt piece, the shunt piece and the fixed frame are arranged into an integral structure, the connecting seat is arranged on the outer side surface of the fixed shield, and the connecting seat is distributed at equal intervals around the axis of the fixed shield, so that the fixed shield can be connected with the main body of the pulse generator, the connecting head is arranged at the top end of the fixed shield, so that the top end of the fixed shield is fixedly connected with a shield joint in a thread matching mode, the fixed shield is connected with the shield joint in a thread matching mode, the upper end face of the fixing frame is provided with the flow dividing piece, so that impact force of slurry on the fixing frame is reduced, flowing of the slurry can be facilitated, the situation that the slurry is blocked in the fixing shield is prevented, and data fed back by the main valve head can be more stable.
Furthermore, the movable external member comprises a limiting sleeve, a limiting stop head and a stud, the top end of the limiting sleeve is provided with the limiting stop head, the limiting stop head is fixedly connected with the limiting sleeve, the side surface of the limiting stop head is provided with the stud, the stud is fixedly connected with the limiting stop head, the movable external member is arranged to limit the position of the main valve head, thereby preventing the main valve head from deviating under the impact of mud, limiting the rebound stroke of the movable sleeve by arranging the limit stop head, the side surface of the limit stop head is provided with the stud, so that the main valve head is convenient to install in a thread matching mode, the assembly between the main valve head and the movable sleeve is more convenient, meanwhile, the main valve head is convenient to replace in the later period, and the main valve head needs to be maintained and replaced regularly under the impact of slurry for a long time.
Furthermore, the outer wall thread is arranged on the outer side surface of the bottom end of the limiting sleeve, the limiting column is arranged in the limiting sleeve, the limiting column is fixedly connected with the limiting sleeve, the axes of the limiting column and the limiting sleeve are on the same straight line, the outer wall thread is arranged on the outer side surface of the bottom end of the limiting sleeve, so that a sealing fastener is arranged at the bottom end of the limiting sleeve in a thread fit mode, the bottom end of the limiting sleeve can be sealed through the mutual fit between the sealing fastener and a sealing ring, slurry is prevented from entering the inside of the first limiting sleeve, the limiting column is arranged in the limiting sleeve, the position of the movable sleeve is further limited, the condition that the axial lead between the movable sleeve and the fixed shield deviates under the impact of the slurry can be prevented, and the main valve head can be effectively prevented from deviating under the impact of the slurry, and thus the occurrence of clogging in the inside of the fixed guard can be prevented.
Furthermore, a first inner wall connecting thread is arranged on the inner side surface of the top end of the sealing fastener, a sealing ring limiting groove is arranged on the inner side surface of the bottom end of the sealing fastener, the first inner wall connecting thread and the outer wall thread are matched with each other, the sealing ring limiting groove and the sealing ring are matched with each other, the sealing fastener is arranged to seal one end of the limiting sleeve so as to prevent slurry from entering the limiting sleeve, the first inner wall connecting thread is arranged on the inner side surface of the top end of the sealing fastener so as to ensure that the sealing fastener and the movable sleeve are fixedly connected through thread matching through the mutual matching of the first inner wall connecting thread and the first inner wall connecting thread, the sealing fastener is provided with the sealing ring limiting groove on the inner side surface of the bottom end of the sealing fastener so as to install the sealing ring in a clamping manner and further seal the outer side of, therefore, the influence of mud on the rebound of the main valve head can be prevented, and the rebound of the main valve head can be more stable.
Further, the top of main valve head is provided with the detecting head, detecting head and main valve head fixed connection, the connecting thread groove has been seted up to the bottom of main valve head, mutually support between connecting thread groove and the double-screw bolt, be provided with the detecting head through the top at main valve head, be for the convenience of detecting data, connecting thread groove has been seted up through the bottom at main valve head, and let mutually support between connecting thread groove and the double-screw bolt, be for the convenience of letting through screw-thread fit fixed connection between the main valve head can and the activity external member, it is more convenient when the equipment to let the main valve head like this, and then can let the later maintenance of main valve head become simple.
Furthermore, the shield joint comprises a connecting piece and a variable diameter piece, the variable diameter piece is arranged at the top end of the connecting piece, the connecting piece and the variable diameter piece are arranged into an integrally formed structure, a second inner wall connecting thread is arranged on the inner side face of the connecting piece, a valve head limiting hole is arranged at the top end of the variable diameter piece, a protection function is mainly achieved by arranging the shield joint, the second inner wall connecting thread is arranged on the inner side face of the connecting piece, the shield joint and the fixed shield are connected in a thread fit mode, the variable diameter piece is arranged at the top end of the connecting piece, the valve head limiting hole is arranged at the top end of the variable diameter piece, the position of the main valve head can be limited, and therefore the main valve head can be prevented from being separated from the protection valve.
Furthermore, the diameter of the limit stop is larger than the inner diameter of the valve head limit hole, the axle centers of the shield joint and the movable external member are on the same straight line, the diameter of the limit stop is larger than the inner diameter of the valve head limit hole, and the axle centers of the shield joint and the movable external member are on the same straight line, so that the situation that the main valve head is separated from the shield joint in the rebounding process is avoided.
Further, the internal diameter of the second limiting sleeve is the same as the diameter of the limiting column, the internal diameter of the second limiting sleeve is the same as the external diameter of the first limiting sleeve, the internal diameter of the second limiting sleeve is the same as the diameter of the limiting column, and the internal diameter of the limiting sleeve is the same as the external diameter of the first limiting sleeve, so that the matching between the movable sleeve and the fixed shield is more stable, and the sealing performance between the movable sleeve and the fixed shield can be improved.
Compared with the prior art, the invention has the beneficial effects that: the main valve head has the characteristics of reasonable structure and easiness in maintenance, the situation that the main valve head is blocked in the rebounding process can be prevented through the mutual matching of the first limiting sleeve, the second limiting sleeve and the movable external member, the main valve head can be maintained and installed more easily through the arranged movable external member, slurry can be prevented from entering the inside of the movable external member through the arranged sealing ring and the sealing clamping piece, and the rebounding process of the main valve head can be more stable.
(1) The outer side surface of the fixed shield is provided with the connecting seats, the connecting seats are distributed at equal intervals around the axis of the fixed shield, the fixed shield can be connected with the main body of the pulse generator, the top end of the fixed shield is provided with the connecting head, the top end of the fixed shield is fixedly connected with the shield joint in a threaded matching mode, the fixed shield and the shield joint are connected in a threaded matching mode, the assembly of the pulse generator can be more convenient, the upper end surface of the fixed shield is provided with the flow dividing piece to reduce the impact force of slurry on the fixed shield, the flow of the slurry can be facilitated, the blocking condition in the fixed shield is prevented, and the data fed back by the main valve head can be more stable.
(2) The movable sleeve is arranged to limit the position of the main valve head, so that the main valve head can be prevented from deviating under the impact of slurry, the limit stop is arranged to limit the rebound stroke of the movable sleeve, and the stud is arranged on the side face of the limit stop to facilitate the installation of the main valve head in a threaded fit manner, so that the assembly between the main valve head and the movable sleeve is more convenient, and the replacement of the main valve head in the later period is facilitated, because the main valve head needs to be maintained and replaced regularly under the impact of slurry for a long time.
(3) According to the invention, the outer wall threads are arranged on the outer side surface of the bottom end of the limiting sleeve, so that the sealing clamping piece is conveniently arranged at the bottom end of the limiting sleeve in a thread matching mode, the bottom end of the limiting sleeve can be sealed through the mutual matching between the sealing clamping piece and the sealing ring, and mud is prevented from entering the first limiting sleeve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a novel high displacement pulse generator according to the present invention;
FIG. 2 is a schematic diagram of a split structure of a novel large displacement pulse generator of the present invention;
FIG. 3 is a schematic structural diagram of a fixed shield of the novel large displacement pulse generator of the present invention;
FIG. 4 is a first schematic diagram of the movable assembly of the novel large displacement pulse generator of the present invention;
FIG. 5 is a schematic structural diagram II of a movable assembly of the novel large displacement pulse generator of the present invention;
FIG. 6 is a schematic structural diagram of a seal cartridge of a novel large displacement pulser of the invention;
FIG. 7 is a first schematic structural diagram of a main valve head of a novel large displacement pulse generator of the present invention;
FIG. 8 is a second schematic structural diagram of a main valve head of a novel large displacement pulse generator of the present invention;
FIG. 9 is a first schematic view of the joint of the shield of the novel large displacement pulse generator of the present invention;
fig. 10 is a second structural schematic diagram of the shield joint of the novel large displacement pulse generator of the invention.
In the figure: 1. fixing the shield; 11. a connecting seat; 12. a connector; 13. a fixed mount; 131. a flow divider; 14. a first limit sleeve; 15. a second limit sleeve; 2. a return spring; 3. a seal ring; 4. sealing the clamping piece; 41. the first inner wall is connected with threads; 42. a sealing ring limiting groove; 5. a movable kit; 51. a limiting sleeve; 511. outer wall threads; 52. a limiting stop head; 53. a stud; 54. a limiting column; 6. a main valve head; 61. a probe head; 62. connecting the screw groove; 7. a shroud joint; 71. a connecting member; 711. the second inner wall is connected with threads; 72. a variable diameter member; 721. valve head limiting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, a novel large displacement pulse generator includes a fixed shield 1, a connecting seat 11 is disposed on an outer side surface of the fixed shield 1, the connecting seat 11 is fixedly connected with the fixed shield 1, the connecting seat 11 is distributed around an axis of the fixed shield 1 at equal intervals, a connecting head 12 is disposed on a top end of the fixed shield 1, the connecting head 12 is fixedly connected with the fixed shield 1, a shunt member 131 is disposed on an upper end surface of a fixing frame 13, the shunt member 131 and the fixing frame 13 are integrally formed, the connecting seat 11 is disposed on the outer side surface of the fixed shield 1, and the connecting seat 11 is distributed around the axis of the fixed shield 1 at equal intervals, so that the fixed shield 1 can be connected with a main body of the pulse generator, the connecting head 12 is disposed on the top end of the fixed shield 1, the top end of the fixed shield 1 is fixedly connected with the shield joint 7 in a threaded matching mode, the fixed shield 1 is connected with the shield joint 7 in a threaded matching mode, the assembly of the invention is more convenient, and the splitter 131 is arranged on the upper end face of the fixed frame 13 to reduce the impact force of slurry on the fixed frame 13, so that the flow of the slurry is facilitated, the blocking condition in the fixed shield 1 is prevented, and the data fed back by the main valve head 6 is more stable; the inner diameter of the second limiting sleeve 15 is the same as the diameter of the limiting column 54, the inner diameter of the limiting sleeve 51 is the same as the outer diameter of the first limiting sleeve 14, and the inner diameter of the second limiting sleeve 15 is the same as the diameter of the limiting column 54, and the inner diameter of the limiting sleeve 51 is the same as the outer diameter of the first limiting sleeve 14, so that the matching between the movable sleeve 5 and the fixed shield 1 can be more stable, and the sealing performance between the movable sleeve 5 and the fixed shield 1 can be improved;
the inner side of the fixed shield 1 is provided with a fixed frame 13, the fixed frame 13 is fixedly connected with the fixed shield 1, the upper end surface of the fixed frame 13 is provided with a first limit sleeve 14, the first limit sleeve 14 is fixedly connected with the fixed frame 13, the bottom end inside the first limit sleeve 14 is fixedly connected with a second limit sleeve 15, the outer side of the second limit sleeve 15 is sleeved with a reset spring 2, the outer side of the first limit sleeve 14 is sleeved with a movable sleeve 5, the movable sleeve 5 comprises a limit sleeve 51, a limit stop head 52 and a stud 53, the top end of the limit sleeve 51 is provided with the limit stop head 52, the diameter of the limit stop head 52 is larger than the inner diameter of a valve head limit hole 721, the axes of the shield joint 7 and the movable sleeve 5 are on the same straight line, the diameter of the limit stop head 52 is larger than the inner diameter of the valve head limit hole 721, and the axes of the shield joint 7 and the, the main valve head 6 is prevented from being separated from the shield joint 7 in the rebound process; the limit stop head 52 is fixedly connected with the limit sleeve 51, the side surface of the limit stop head 52 is provided with a stud 53, the stud 53 is fixedly connected with the limit stop head 52, the movable sleeve 5 is arranged to limit the position of the main valve head 6, so that the situation that the main valve head 6 deviates under the impact of slurry can be prevented, the limit stop head 52 is arranged to limit the rebound stroke of the movable sleeve 5, and the stud 53 is arranged on the side surface of the limit stop head 52, so that the main valve head 6 is installed in a thread fit mode, the assembly between the main valve head 6 and the movable sleeve 5 is more convenient, meanwhile, the main valve head 6 is convenient to replace in the later period, and the main valve head 6 needs to be maintained and replaced regularly under the impact of slurry for a long time;
the outer wall thread 511 is arranged on the outer side surface of the bottom end of the limiting sleeve 51, the limiting column 54 is arranged inside the limiting sleeve 51, the limiting column 54 is fixedly connected with the limiting sleeve 51, the axes of the limiting column 54 and the limiting sleeve 51 are on the same straight line, the outer wall thread 511 is arranged on the outer side surface of the bottom end of the limiting sleeve 51, so that the sealing clamping piece 4 is conveniently arranged at the bottom end of the limiting sleeve 51 in a thread fit mode, the bottom end of the limiting sleeve 51 can be sealed through the mutual fit between the sealing clamping piece 4 and the sealing ring 3, mud is prevented from entering the inside of the first limiting sleeve 14, the limiting column 54 is arranged inside the limiting sleeve 51 and is used for further limiting the position of the movable sleeve 5, and therefore, under the impact of the mud, the condition that the axial lead between the movable sleeve 5 and the fixed shield 1 deviates can be prevented, therefore, the main valve head 6 can be effectively prevented from deviating under the impact of slurry, and the situation that the inside of the fixed shield 1 is blocked can be further prevented; the bottom end of the movable sleeve piece 5 is provided with a sealing clamping piece 4, the sealing clamping piece 4 and the movable sleeve piece 5 are fixedly connected through thread fit, the top inner side surface of the sealing clamping piece 4 is provided with a first inner wall connecting thread 41, the bottom inner side surface of the sealing clamping piece 4 is provided with a sealing ring limiting groove 42, the first inner wall connecting thread 41 and an outer wall thread 511 are mutually matched, the sealing ring limiting groove 42 and a sealing ring 3 are mutually matched, the sealing clamping piece 4 is arranged to seal one end of a limiting sleeve 51 so as to prevent slurry from entering the limiting sleeve 51, the first inner wall connecting thread 41 is arranged on the top inner side surface of the sealing clamping piece 4 so as to be matched with each other through the first inner wall connecting threads 41 and 411, the sealing clamping piece 4 and the movable sleeve piece 5 are fixedly connected through thread fit, and the sealing ring limiting groove 42 is arranged on the bottom inner side surface of the sealing clamping piece, the sealing ring 3 is conveniently installed in a clamping mode, and the outer side of the bottom end of the limiting sleeve 51 can be sealed through the sealing ring 3, so that the influence of mud on the rebound of the main valve head 6 can be prevented, and the rebound of the main valve head 6 can be more stable;
the inner side of the sealing fastener 4 is fixedly connected with a sealing ring 3 in a clamping way, the other end of the movable sleeve 5 is provided with a main valve head 6, the main valve head 6 is fixedly connected with the movable sleeve 5 in a threaded fit way, the top end of the main valve head 6 is provided with a detecting head 61, the detecting head 61 is fixedly connected with the main valve head 6, the bottom end of the main valve head 6 is provided with a connecting screw groove 62, the connecting screw groove 62 is matched with the screw bolt 53, the detection head 61 is arranged at the top end of the main valve head 6, so that the data detection is convenient, the connecting screw groove 62 is arranged at the bottom end of the main valve head 6, and the connecting screw groove 62 and the screw bolt 53 are mutually matched, so that the main valve head 6 can be fixedly connected with the movable sleeve 5 through screw thread matching, therefore, the main valve head 6 can be more convenient to assemble, and the later maintenance of the main valve head 6 can be simplified; one end of the fixed shield 1 is provided with a shield joint 7, the shield joint 7 is fixedly connected with the fixed shield 1 through thread matching, the shield joint 7 comprises a connecting piece 71 and a reducing piece 72, the top end of the connecting piece 71 is provided with the reducing piece 72, the connecting piece 71 and the reducing piece 72 are arranged into an integrated structure, the inner side surface of the connecting piece 71 is provided with a second inner wall connecting thread 711, the top end of the reducing piece 72 is provided with a valve head limiting hole 721, the shield joint 7 is mainly used for protecting, the connecting piece 71 is arranged, the inner side surface of the connecting piece 71 is provided with the second inner wall connecting thread 711, so that the shield joint 7 is conveniently connected with the fixed shield 1 through thread matching, the top end of the connecting piece 71 is provided with the reducing piece 72, the top end of the reducing piece 72 is provided with the valve head limiting hole 721, and the position of the main valve head, this prevents the main valve head 6 from becoming detached from the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A novel large-displacement pulse generator comprises a fixed shield (1), and is characterized in that: the inner side of the fixed shield (1) is provided with a fixed frame (13), the fixed frame (13) is fixedly connected with the fixed shield (1), the upper end face of the fixed frame (13) is provided with a first limiting sleeve (14), the first limiting sleeve (14) is fixedly connected with the fixed frame (13), the inner bottom end of the first limiting sleeve (14) is fixedly connected with a second limiting sleeve (15), the outer side of the second limiting sleeve (15) is sleeved with a reset spring (2), the outer side of the first limiting sleeve (14) is sleeved with a movable sleeve (5), the bottom end of the movable sleeve (5) is provided with a sealing fastener (4), the sealing fastener (4) is fixedly connected with the movable sleeve (5) through thread matching, the inner side of the sealing fastener (4) is fixedly connected with a sealing ring (3) through a clamping mode, the other end of the movable sleeve (5) is provided with a main valve head (6), the main valve head (6) is fixedly connected with the movable sleeve (5) through thread matching, a shield joint (7) is arranged at one end of the fixed shield (1), and the shield joint (7) is fixedly connected with the fixed shield (1) through thread matching.
2. The novel large displacement pulse generator as claimed in claim 1, wherein the outer side surface of the fixed shield (1) is provided with a connecting seat (11), the connecting seat (11) and the fixed shield (1) are fixedly connected, the connecting seat (11) is distributed around the axis of the fixed shield (1) at equal intervals, the top end of the fixed shield (1) is provided with a connecting head (12), the connecting head (12) is fixedly connected with the fixed shield (1), the upper end surface of the fixing frame (13) is provided with a shunt member (131), and the shunt member (131) and the fixing frame (13) are provided with an integrally formed structure.
3. The novel large-displacement pulse generator as claimed in claim 2, wherein the movable sleeve (5) comprises a limiting sleeve (51), a limiting stopper (52) and a stud (53), the limiting stopper (52) is arranged at the top end of the limiting sleeve (51), the limiting stopper (52) is fixedly connected with the limiting sleeve (51), the stud (53) is arranged on the side surface of the limiting stopper (52), and the stud (53) is fixedly connected with the limiting stopper (52).
4. The novel large-displacement pulse generator as claimed in claim 3, wherein the outer wall thread (511) is formed on the outer side surface of the bottom end of the limiting sleeve (51), the limiting column (54) is arranged inside the limiting sleeve (51), the limiting column (54) is fixedly connected with the limiting sleeve (51), and the axes of the limiting column (54) and the limiting sleeve (51) are on the same straight line.
5. The novel large-displacement pulse generator as claimed in claim 4, wherein the inner side surface of the top end of the sealing clamping piece (4) is provided with a first inner wall connecting thread (41), the inner side surface of the bottom end of the sealing clamping piece (4) is provided with a sealing ring limiting groove (42), the first inner wall connecting thread (41) and the outer wall thread (511) are matched with each other, and the sealing ring limiting groove (42) and the sealing ring (3) are matched with each other.
6. The novel large-displacement pulse generator as claimed in claim 5, wherein a detection head (61) is arranged at the top end of the main valve head (6), the detection head (61) is fixedly connected with the main valve head (6), a connecting screw groove (62) is formed at the bottom end of the main valve head (6), and the connecting screw groove (62) and the stud (53) are matched with each other.
7. The novel large-displacement pulse generator as claimed in claim 6, wherein the shield joint (7) comprises a connecting piece (71) and a reducing piece (72), the reducing piece (72) is arranged at the top end of the connecting piece (71), the connecting piece (71) and the reducing piece (72) are arranged into an integrally formed structure, a second inner wall connecting thread (711) is formed in the inner side surface of the connecting piece (71), and a valve head limiting hole (721) is formed in the top end of the reducing piece (72).
8. The novel large displacement pulse generator as claimed in claim 7, wherein the diameter of the limit stop (52) is larger than the inner diameter of the valve head limit hole (721), and the axes of the shield joint (7) and the movable sleeve member (5) are in the same straight line.
9. The novel large displacement pulse generator as claimed in claim 8, wherein the inner diameter of the second limiting sleeve (15) is the same as the diameter of the limiting post (54), and the inner diameter of the limiting sleeve (51) is the same as the outer diameter of the first limiting sleeve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109863.8A CN111075438A (en) | 2020-02-23 | 2020-02-23 | Novel large-displacement pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109863.8A CN111075438A (en) | 2020-02-23 | 2020-02-23 | Novel large-displacement pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111075438A true CN111075438A (en) | 2020-04-28 |
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| CN202010109863.8A Pending CN111075438A (en) | 2020-02-23 | 2020-02-23 | Novel large-displacement pulse generator |
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