CN215256154U - Device for realizing space communication in sleeve - Google Patents
Device for realizing space communication in sleeve Download PDFInfo
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- CN215256154U CN215256154U CN202121538840.5U CN202121538840U CN215256154U CN 215256154 U CN215256154 U CN 215256154U CN 202121538840 U CN202121538840 U CN 202121538840U CN 215256154 U CN215256154 U CN 215256154U
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Abstract
The application relates to a device for realizing space communication in a sleeve, which comprises a probe, wherein the probe comprises an installation frame, a clamp is fixed on the installation frame by a bolt, and a triaxial gyroscope is fixed on the installation frame by the clamp; the mounting rack comprises a round rod-shaped shell; the second mounting grooves are concavely arranged in the shell and extend along the axial direction of the shell, and the two second mounting grooves are symmetrically arranged relative to one axial middle section of the shell; the two ends of the shell are respectively connected with a first connecting column and a second connecting column in an integrated manner; a first mounting groove is concavely arranged at one end of the shell, which is close to the first connecting column, and the first mounting groove and one second mounting groove are axially aligned and communicated; a third mounting groove and a fourth mounting groove are concavely arranged at one end of the shell close to the second connecting column, and the fourth mounting groove is axially aligned and communicated with the other second mounting groove; this application is through the gesture of triaxial gyroscope measurement probe, and the guide trompil reduces the influence of sleeve pipe to the precision of punching.
Description
Technical Field
The application relates to the technical field of space communication, in particular to a device for realizing space communication in a sleeve.
Background
Some pore canals can be opened as required in the construction process of oil, coal mine, salt well and mine tunnel, and two pore canals are communicated as required. And old wells may exist, and the old wells are communicated with other well bores, so that the old wells are fully utilized. The specific method is to open a new well and communicate the new well with an old well, so that the old well can be reused.
In the related art, a fluxgate sensor is adopted to acquire a magnetic signal of an emitting end, so that the drill bit is guided. However, when a casing is provided in an old well, the casing interferes with the magnetic signal, thereby affecting the accuracy of guidance. In the related art, the fluxgate sensor is adopted to guide the drill bit to realize the space communication, which is easily influenced by the sleeve.
SUMMERY OF THE UTILITY MODEL
The application provides a device for realizing space communication in a sleeve, which can reduce the interference of the sleeve in the space communication.
A device for realizing space communication in a sleeve comprises a probe, wherein the probe comprises a mounting frame, a clamp is fixed on the mounting frame by a bolt, and a triaxial gyroscope is fixed on the mounting frame by the clamp;
the mounting rack comprises a round rod-shaped shell; the second mounting grooves are concavely arranged in the shell and extend along the axial direction of the shell, and the two second mounting grooves are symmetrically arranged relative to one axial middle section of the shell; the two ends of the shell are respectively connected with a first connecting column and a second connecting column in an integrated manner; a first mounting groove is concavely arranged at one end of the shell, which is close to the first connecting column, and the first mounting groove and one second mounting groove are axially aligned and communicated; the one end department that is close to the second spliced pole at the casing is concave to be equipped with third mounting groove and fourth mounting groove, and fourth mounting groove and another second mounting groove axial alignment and intercommunication.
By adopting the technical scheme, the related technology acquires the magnetic signals through the three-axis fluxgate sensor to determine the posture of the probe rod, and the sleeve influences the acquisition of the magnetic signals, so that the three-axis fluxgate sensor cannot accurately acquire the magnetic signals. The posture of the probe rod is calculated according to the gyroscopic precession vector measured by the triaxial gyroscope, the gyroscopic precession vector is not influenced by the sleeve, and the influence of the sleeve on the space communication precision is reduced.
Optionally, the probe further comprises a triaxial gravity acceleration sensor, a triaxial fluxgate sensor and a temperature sensor; and the triaxial gravity acceleration sensor and the triaxial fluxgate sensor are respectively fixed in the two second mounting grooves by clamps so as to reduce mutual interference.
Through adopting above-mentioned technical scheme, triaxial gravity acceleration sensor and triaxial fluxgate sensor are separated by the main part of mounting bracket and are left, reduce the mutual interference of the signal between triaxial gravity acceleration sensor and the triaxial fluxgate sensor to do benefit to and improve measurement accuracy.
Optionally, the probe further comprises a weighting rod, a first connecting piece, an installation tube, a second connecting piece and a rope cap head which are axially aligned and sequentially connected by threads; the mounting frame is arranged in the mounting pipe in a penetrating way; and a connecting pipe is tightly propped between the second connecting piece and the mounting rack.
The weighting rod and the installation pipe are respectively connected with two ends of the first connecting piece through threads; the second connecting piece is connected to one end of the mounting pipe, which is far away from the first connecting piece, through threads; the rope cap head is connected with one end of the second connecting piece, which is far away from the installation pipe, through threads.
The connecting pipe and the mounting rack are coaxially sleeved together, the connecting pipe is tightly propped against the end part of the mounting rack, and the connecting pipe and the mounting rack are both arranged in the mounting pipe in a penetrating mode along the axial direction of the mounting pipe. One end of the connecting pipe, which is far away from the mounting rack, is sleeved at the end part of the second connecting piece and is tightly propped against the end part of the second connecting piece; one end of the mounting frame, which is far away from the connecting pipe, is sleeved at the end part of the first connecting piece.
Through adopting above-mentioned technical scheme, the weight bar plays the counter weight effect, drives the probe and moves down along sheathed tube inner chamber under the action of gravity of weight bar, is convenient for adjust the probe to the position department that needs the measurement, makes measurement operation more convenient.
The weighting rod, the first connecting piece, the mounting pipe, the second connecting piece and the rope cap head are connected through detachable threads, and the weighting rod, the first connecting piece, the mounting pipe, the second connecting piece and the rope cap head are convenient to detach and assemble as required. The rope cap head is used for binding a rope, so that the probe can be conveniently lifted by the rope.
Optionally, the probe also comprises a magnetic joint, and the magnetic joint rotates to generate a magnetic signal and send the magnetic signal to the probe. The magnetic joint rotates to generate a magnetic signal, and the triaxial fluxgate sensor on the probe receives the magnetic signal.
Optionally, the magnetic joint includes a magnet mounting seat, and a combination hole penetrates through the magnet mounting seat; the combination hole extends along a direction perpendicular to the axial direction of the magnet mounting seat;
the combined hole comprises a magnet mounting hole and an auxiliary replacing hole which are communicated with each other; the diameter of the auxiliary replacing hole is smaller than that of the magnet mounting hole; in the axial direction along the magnet mounting seat, the directions of the adjacent combination holes are opposite; the directions of the two combined holes on the same radial section of the magnet mounting seat are opposite; the magnet is fixed in the magnet mounting hole.
The two combined holes are opposite in direction, namely, the auxiliary replacing hole in the first combined hole is positioned at one end and the magnet mounting hole is positioned at the other end in the two adjacent combined holes; the auxiliary replacing hole in the second combined hole and the magnet mounting hole in the first combined hole are positioned at the same end; the magnet mounting hole in the second combined hole and the auxiliary replacement hole in the first combined hole are positioned at the same end.
Through adopting above-mentioned technical scheme, the combination hole is along the axial evenly distributed of magnet mount pad, and magnet is by even installation on the magnet mount pad to magnetic field is evenly distributed also. When the magnet mounting seat rotates, the magnetic field also changes along with the stability, so that a stable magnetic signal source is provided for the probe tube, and the detection is facilitated.
Optionally, a clamp spring is clamped in the magnet mounting hole, and the clamp spring is clamped outside the magnet to fix the magnet; and sealing glue is filled in the magnet mounting hole to fix the magnet.
Through adopting above-mentioned technical scheme, adopt the jump ring to realize the demountable installation of magnet, be convenient for change magnet as required, convenient to use.
Optionally, the connecting tube comprises a circular tube-shaped shell; the first connection hole and the second connection hole penetrate near both ends of the case, respectively.
Optionally, the clamp includes a housing, one end of the housing is open, the other end of the housing is integrally connected with a bottom plate, and a fixing seat is integrally connected in an inner cavity of the housing; first mounting holes are formed in the four included angles of the fixing seat in a penetrating mode, and second mounting holes are formed in the bottom plate in a penetrating mode.
Optionally, a centralizer is connected to the lower portion of the probe through threads.
Through adopting above-mentioned technical scheme, centralizer is with threaded connection in the outside of the lower part of probe. In the process that the probe moves in the sleeve, when the transverse position of the probe deviates, the centralizer corrects the position of the probe, so that the probe is in a reasonable position.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the related art, the triaxial fluxgate sensor acquires the magnetic signal to determine the posture of the probe, and the sleeve influences the acquisition of the magnetic signal, so that the triaxial fluxgate sensor cannot accurately acquire the magnetic signal. The posture of the probe rod is calculated according to the gyroscopic precession vector measured by the triaxial gyroscope, the gyroscopic precession vector is not influenced by the sleeve, and the influence of the sleeve on the space communication precision is reduced.
Drawings
FIG. 1 is a schematic view of a magnetic joint.
Fig. 2 is a cross-sectional view taken along line D-D in fig. 1.
Fig. 3 is a schematic view of a magnetic joint.
Fig. 4 is a cross-sectional view C-C in fig. 3.
Fig. 5 is a schematic view of a mounting bracket.
Fig. 6 is a schematic view of a mounting bracket.
Fig. 7 is a schematic view of a probe.
Fig. 8 is a schematic view of a probe.
Fig. 9 is a schematic view of a first connector.
Fig. 10 is a schematic view of a connecting tube.
Fig. 11 is a schematic view of a second connector.
Fig. 12 is a schematic view of a clamp.
Figure 13 is a schematic view of a centralizer.
Description of reference numerals: 1-a weighting bar; 2-a first connecting member; 21-a first screw; 22-a support bar; 23-a second screw; 24-a center pole; 25-a baffle plate; 26-a retainer ring; 3-mounting a frame; 31-a housing; 32-a first connecting column; 33-a first mounting groove; 34-a second mounting groove; 35-a third mounting groove; 36-a second connecting column; 37-a fourth mounting groove; 4-installing a pipe; 5-a second connector; 51-a connector; 52-a barrier; 53-first connecting segment; 54-a second connection segment; 55-coil; 6-rope cap head; 7-connecting pipe; 71-a first connection hole; 72-a housing; 73-second connection hole; 8-a magnet mounting seat; 9-magnet mounting holes; 10-auxiliary replacement holes; 11-a clamp; 1101-a fixed seat; 1102-a housing; 1103 — a first mounting hole; 1104-a backplane; 1105-a second mounting hole; 12-a centralizer; 1201-a guide tube; 1202-adjusting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-13 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Real-time example 1
Referring to fig. 1 to 4, the present application provides a magnetic joint including a magnet mount 8, in which a combination hole is penetrated in the magnet mount 8. The combination hole extends in a direction perpendicular to the axial direction of the magnet mount 8. The combination hole includes a magnet mounting hole 9 and an auxiliary replacement hole 10 which are communicated with each other. The diameter of the auxiliary replacement hole 10 is smaller than the diameter of the magnet installation hole 9. The directions of the adjacent combination holes are opposite in the axial direction along the magnet mounting base 8. The two combination holes on the same radial section of the magnet mounting 8 are in opposite directions. The magnet is fixed in the magnet mounting hole 9. A clamp spring is clamped in the magnet mounting hole 9, and the clamp spring is clamped outside the magnet to fix the magnet. And the magnet mounting hole 9 is filled with sealant to fix the magnet.
Specifically, the clamp spring can be detached, and the magnet is fixed by the clamp spring, so that the magnet can be conveniently mounted and detached. The diameter of the auxiliary replacement hole 10 is smaller than the diameter of the magnet installation hole 9. Magnet is fixed in magnet mounting hole 9 by the jump ring, when changing magnet, only need follow in supplementary change hole 10 along the magnet of axial promotion installation in magnet mounting hole 9, just can promote magnet, is convenient for change magnet. The sealant bonds the magnet and the magnet mounting seat 8 together, so that the mounting stability is improved, and the magnet is prevented from sliding in the rotating process.
Real-time example 2
Referring to fig. 5 and 6, the present application provides a probe, which includes a mounting frame 3, a clamp 11 is fixed on the mounting frame 3 by bolts, and a clamp for a triaxial gyroscope is fixed on the mounting frame 3. The mounting frame 3 includes a circular rod-shaped housing 31; the second mounting grooves 34 are recessed in the housing 31 and extend in the axial direction of the housing 31, and the two second mounting grooves 34 are disposed symmetrically with respect to one axial middle section of the housing 31.
A first connecting post 32 and a second connecting post 36 are integrally formed at both ends of the housing 31. The second connecting post 36 and the first connecting post 32 are both cylindrical. A first mounting groove 33 is concavely provided at an end of the housing 31 adjacent to the first connection post 32, and the first mounting groove 33 and one second mounting groove 34 are axially aligned and communicate. A third mounting groove 35 and a fourth mounting groove 37 are concavely provided at one end of the housing 31 adjacent to the second connection post 36, and the fourth mounting groove 37 is axially aligned with and communicates with the other second mounting groove 34.
The probe rod further comprises a triaxial gravity acceleration sensor, a triaxial fluxgate sensor and a temperature sensor. The triaxial gravity acceleration sensor and the triaxial fluxgate sensor are respectively fixed in the two second mounting grooves 34 by clamps to reduce mutual interference.
The triaxial gyroscope, the triaxial gravity acceleration sensor, the triaxial fluxgate sensor and the temperature sensor are all fixed on the fixture by bolts, and the fixture is fixed on the mounting frame 3 by bolts.
Specifically, the second mounting grooves 34 extend in the axial direction of the housing 31, which results in a longer length of the housing 31 if two second mounting grooves 34 are opened at one side of the housing 31. In this application, two second mounting grooves 34 set up respectively in the both sides of casing 31, install each sensor respectively in two second mounting grooves 34, can be so that casing 31 length is shorter, and each sensor circuit line is shorter.
The triaxial gravity acceleration sensor and the triaxial fluxgate sensor are respectively fixed in the two second mounting grooves 34 by using a clamp, and the two second mounting grooves 34 are separated by the solid part of the housing 31, so that mutual interference between the triaxial gravity acceleration sensor and the triaxial fluxgate sensor is reduced.
When a casing is placed in a well to be communicated, the probe needs to go deep into the casing. The magnet rotates to generate a magnetic field, a signal of the magnetic field is detected by adopting a three-axis fluxgate sensor in the related art, and the drill bit is guided to punch holes according to the acquired signal to communicate the two wells. The drill bit is arranged in a new well, and the probe is used for collecting magnetic signals sent by the drill bit in a target well and guiding the drill bit to punch.
In the present application, the components of the gravitational acceleration g measured by the three-axis acceleration sensor on the X-axis, the Y-axis and the Z-axis are gx、gy、gz. The components of the gyro precession vector measured by the three-axis gyroscope on the X axis, the Y axis and the Z axis are w respectivelyx、wyAnd wz。
The azimuth angle a is calculated by a gyroscope to display the posture of the probe, and the specific formula is as follows:
the direction of the angle of orientation a,
the related technology adopts the components g of the gravity acceleration g on the X axis, the Y axis and the Z axisx、gy、gzAnd components H of the earth magnetic field H on the X-axis, Y-axis and Z-axisx、Hy、HzCalculating to obtain an azimuth angle a;
-geographical latitude of the position of the probe。
However, in practical application, due to the existence of the sleeve, the triaxial fluxgate sensor is influenced by the sleeve in the sleeve, and H acquired by the triaxial fluxgate sensorx、Hy、HzThe calculation of the azimuth is inaccurate.
In this embodiment, the components w of the precession vector of the gyro in the X, Y and Z axes are usedx、wyAnd wzAnd the components g of the gravity acceleration g on the X axis, the Y axis and the Z axisx、gy、gzThe azimuth angle a is calculated.
The triaxial acceleration sensor and the triaxial gyroscope are not influenced by the sleeve, and g obtained by measurementx、gy、gzAnd wx、wyAnd wzThe accuracy of the method is not influenced by the sleeve, so that the azimuth angle a can be accurately calculated, the measurement precision is improved, the relative position between the drill bit and the probe is accurately determined, the guide precision of the drill bit is improved, and the accurate guide positioning and communication in the sleeve are realized.
Referring to fig. 7 and 8, the probe further comprises a weighting rod 1, a first connecting piece 2, a mounting tube 4, a second connecting piece 5 and a rope cap 6 which are axially aligned and sequentially connected by threads. The mounting frame 3 is arranged in the mounting tube 4 in a penetrating way. A connecting pipe 7 is tightly pressed between the second connecting member 5 and the mounting bracket 3.
Specifically, the upper portion of the weight bar 1 is a round bar shape, and the lower end of the weight bar 1 is a conical shape. Through setting up the weight that adds the probe rod of weight rod 1 increase, under the pulling effect of the gravity of weight rod 1, the probe rod can be fine moves down along the old well that is detected.
Referring to fig. 9, the first connecting member 2 includes a first screw 21, a support rod 22, a second screw 23, and a center rod 24 integrally formed in an axial direction. The baffle 25 is circular and the baffle 25 is integrally formed at the end of the central rod 24 facing away from the second threaded rod 23. The retainer ring 26 is annular, and the retainer ring 26 is integrally provided on the outer side of the center rod 24.
After installation, the second screw 23 is screwed onto the installation tube 4. The diameter of bracing piece 22 is greater than the diameter of second screw 23, and the tip top of bracing piece 22 is tight at the tip of installation pipe 4, improves the stability of installation pipe 4 and first connecting piece 2.
Referring to fig. 10 and 11, the second connector 5 includes a connection head 51, a second connection segment 54, and a coil 55 integrally formed in an axial direction. The blocking member 52 and the first connecting section 53 are integrally formed and disposed outside the connecting head 51. 3 circular positioning holes are penetrated in the side wall of the connecting head 51. The first connecting section 53 is circular. The stop 52 is circular.
The connection pipe 7 includes a circular tubular housing 72. The first connection hole 71 and the second connection hole 73 penetrate near both ends of the case 72, respectively. The middle portion of the first connection hole 71 is rectangular and both ends are semicircular holes, and the second connection hole 73 is a circular hole.
After installation, the connecting head 51 is inserted into the upper end of the housing 72, the first connecting holes 71 and the positioning holes are aligned one by one, and the bolts are screwed in the first connecting holes 71 and the positioning holes to connect the connecting head 51 and the housing 72.
Referring to fig. 12, the jig includes a housing 1102 having a rectangular parallelepiped shape, one end of the housing 1102 is open, a base plate 1104 is integrally formed at the other end, a holder 1101 is integrally formed in an inner cavity of the housing 1102, and an inner cavity of the holder 1101 is a regular hexagon. Circular first mounting holes 1103 are formed at four corners of the fixing base 1101, and circular second mounting holes 1105 are formed in the bottom plate 1104.
The bolt is screwed into the second mounting hole 1105 and connects the clamp to the mounting bracket 3. Each sensor is placed on a holder 1101 and fixed with bolts. The housing 1102 provides a secure and protective function for the sensor.
Real-time example 3
Referring to fig. 13, the device for realizing spatial communication in a casing according to the present application comprises a magnetic joint and a probe, wherein a centralizer 12 is connected to the lower part of the probe by a thread.
The centralizer 12 comprises a tubular guide tube 1201, and the inner cavity of the guide tube 1201 is a circular cavity. An adjustment plate 1202 is integrally connected to the outer wall of the guide tube 1201, and the adjustment plate 1202 extends in the radial direction of the guide tube 1201. The 3 adjusting plates 1202 are evenly distributed along the circumferential direction of the guide tube 1201. The longitudinal section of the adjustment plate 1202 is trapezoidal.
The centralizer 12 is disposed through the casing and slides with the probe inside the casing. When the probe inclines in the transverse direction, the centralizer 12 is firstly contacted with the inner wall of the casing, so that the probe is prevented from colliding with the inner wall of the casing, and the probe is protected.
The device for realizing space communication in the sleeve comprises the magnetic joint, the probe and the centralizer, wherein the probe receives a magnetic signal generated when the magnetic joint rotates. And a three-axis gyroscope is arranged on the probe, and the azimuth angle is calculated according to the gyroscopic precession vector to guide the drill bit to drill. The triaxial gyroscope is not affected by the sleeve, so that the accuracy of spatial communication is improved.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (9)
1. A device for achieving spatial communication within a cannula, comprising: the device comprises a probe, wherein the probe comprises a mounting frame (3), a clamp (11) is fixed on the mounting frame (3) through a bolt, and the clamp (11) for the triaxial gyroscope is fixed on the mounting frame (3);
the mounting frame (3) comprises a round rod-shaped shell (31); the second mounting grooves (34) are concavely arranged in the shell (31) and extend along the axial direction of the shell (31), and the two second mounting grooves (34) are symmetrically arranged relative to one axial middle section of the shell (31); a first connecting column (32) and a second connecting column (36) are respectively connected to the two ends of the shell (31) in an integrated manner; a first mounting groove (33) is concavely arranged at one end of the shell (31) close to the first connecting column (32), and the first mounting groove (33) is axially aligned with and communicated with a second mounting groove (34); a third mounting groove (35) and a fourth mounting groove (37) are concavely arranged at one end of the shell (31) close to the second connecting column (36), and the fourth mounting groove (37) is axially aligned and communicated with the other second mounting groove (34).
2. The device of claim 1 for providing spatial communication within a cannula, wherein: the probe also comprises a triaxial gravity acceleration sensor, a triaxial fluxgate sensor and a temperature sensor; the triaxial gravity acceleration sensor and the triaxial fluxgate sensor are respectively fixed in the two second mounting grooves (34) by clamps so as to reduce mutual interference.
3. The device of claim 2 for providing spatial communication within a cannula, wherein: the probe also comprises a weighting rod (1), a first connecting piece (2), a mounting pipe (4), a second connecting piece (5) and a rope cap head (6), which are axially aligned and are sequentially connected by threads; the mounting frame (3) is arranged in the mounting pipe (4) in a penetrating way; a connecting pipe (7) is tightly propped between the second connecting piece (5) and the mounting rack (3).
4. The device of claim 3 for providing spatial communication within a cannula, wherein: and the magnetic joint rotates to generate a magnetic signal and transmits the magnetic signal to the probe.
5. The device of claim 4 for providing spatial communication within a cannula, wherein: the magnetic joint comprises a magnet mounting seat (8), and a combined hole penetrates through the magnet mounting seat (8);
the combination hole extends along a direction perpendicular to the axial direction of the magnet mounting seat (8);
the combined hole comprises a magnet mounting hole (9) and an auxiliary replacing hole (10) which are communicated with each other; the diameter of the auxiliary replacement hole (10) is smaller than that of the magnet mounting hole (9);
in the axial direction along the magnet mounting seat (8), the directions of the adjacent combination holes are opposite;
the directions of the two combined holes on the same radial section of the magnet mounting seat (8) are opposite;
the magnet is fixed in the magnet mounting hole (9).
6. The device of claim 5 for providing spatial communication within a cannula, wherein: a clamp spring is tightly clamped in the magnet mounting hole (9), and the clamp spring is tightly clamped at the outer side of the magnet to fix the magnet; and the magnet mounting hole (9) is filled with sealant to fix the magnet.
7. The device of claim 3 for providing spatial communication within a cannula, wherein: the connecting tube (7) comprises a circular tubular housing (72); the first connection hole (71) and the second connection hole (73) penetrate near both ends of the housing (72), respectively.
8. The device of claim 1 for providing spatial communication within a cannula, wherein: the clamp (11) comprises a shell (1102), one end of the shell (1102) is open, the other end of the shell (1102) is integrally connected with a bottom plate (1104), and a fixing seat (1101) is integrally connected in an inner cavity of the shell (1102); first mounting holes (1103) are formed in four corners of the fixed seat (1101) in a penetrating mode, and second mounting holes (1105) penetrate through the bottom plate (1104).
9. Device for achieving spatial communication in a casing according to claim 1, characterised in that a centralizer (12) is screwed to the lower part of the probe.
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| CN202121538840.5U CN215256154U (en) | 2021-07-07 | 2021-07-07 | Device for realizing space communication in sleeve |
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| CN202121538840.5U CN215256154U (en) | 2021-07-07 | 2021-07-07 | Device for realizing space communication in sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113356763A (en) * | 2021-07-07 | 2021-09-07 | 濮阳星运电子科技有限公司 | Method and system for realizing space communication in sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356763A (en) * | 2021-07-07 | 2021-09-07 | 濮阳星运电子科技有限公司 | Method and system for realizing space communication in sleeve |
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