A mining explosion-proof mud pulse probe axial clearance adjustment structure

Abstract

The present invention discloses an axial gap adjustment structure for an explosion-proof mud pulse probe tube for mining, which may include a probe tube, the rear end of which is formed with a positioning groove along its circumference; a probe tube fixing wing, the interior of which is hollow, the rear end of which is plugged into the interior of the probe tube fixing wing, a positioning screw is arranged on the probe tube fixing wing, the axial direction of the positioning screw is perpendicular to the axial direction of the probe tube fixing wing, and the front end of the positioning screw extends to the interior of the positioning groove so as to limit the axial freedom of the probe tube and the probe tube fixing wing during relative movement. The axial gap adjustment structure for an explosion-proof mud pulse probe tube for mining provided in the present application has a simple and reasonable structure and is easy to install and use. The axial gap adjustment can be realized when the mining mud pulse probe tube is assembled with a non-magnetic drill rod. The adjustment method is simple and easy to operate, ensuring that the gap between the assembled probe tube and the circulation sleeve meets the design requirements, and is worthy of large-scale promotion and use.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, in particular to an axial clearance adjustment structure of a mining explosion-proof mud pulse probe. Background Art

[0002] The mining mud pulse probe must cooperate with the valve stem of the pulser and the valve port of the circulation sleeve to generate a pressure pulse signal of high-pressure mud or water. The clearance tolerance between the valve stem and the circulation sleeve must be guaranteed to be within a small fixed value range. The existing technology designs the valve stem and the circulation sleeve as an integrated structure. Although the set of structures can ensure the dimensional tolerance, the probe pulser and the circulation sleeve need to be replaced together during replacement, which increases the replacement cost and the replacement process is cumbersome. After separate design, the replacement cost problem can be well solved. However, since the non-magnetic drill rod for installing the probe is relatively long, the axial length of the valve stem cannot be adjusted after processing and installation, and different degrees of dimensional deviation often occur, resulting in the inability to transmit the signal. Summary of the invention

[0003] The invention provides an axial clearance adjustment structure of a mining explosion-proof mud pulse probe.

[0004] The present invention provides the following scheme:

[0005] An axial clearance adjustment structure of a mining explosion-proof mud pulse probe tube, comprising:

[0006] A probe tube, wherein a positioning groove is formed at the rear end of the probe tube along the circumference thereof;

[0007] A probe tube fixing wing, wherein the interior of the probe tube fixing wing is hollow, the rear end of the probe tube is plugged into the interior of the probe tube fixing wing, a positioning screw is arranged on the probe tube fixing wing, the axial direction of the positioning screw is perpendicular to the axial direction of the probe tube fixing wing, and the front end of the positioning screw extends to the interior of the positioning groove so as to limit the axial freedom of the probe tube and the probe tube fixing wing when they move relative to each other;

[0008] An adjusting screw rod is connected in cooperation with an internal thread formed inside the fixed wing of the probe tube; a front end surface of the adjusting screw rod abuts against an end surface of a rear end of the probe tube.

[0009] Preferably: the probe tube fixing wing includes a large diameter section and a small diameter section, and the positioning screw is formed in the large diameter section; the circumferential side surface of the large diameter section is used to abut against the inner surface of the fixing groove of the drill rod, and the front end surface of the large diameter section is used to abut against the vertical surface of the fixing groove.

[0010] Preferably, a cross section formed at the connection between the large diameter section and the small diameter section is flush with the bottom of the inner thread of the drill rod.

[0011] Preferably, the rear end of the positioning screw does not protrude from the surface of the circumferential side surface of the large diameter section.

[0012] Preferably, the positioning screws include a plurality of positioning screws uniformly arranged along the circumference of the large diameter section.

[0013] Preferably, the drill rod is a non-magnetic drill rod.

[0014] Preferably: it also includes an anti-loosening component, which includes an anti-loosening ring; the adjusting screw is formed with a first external thread segment and a second external thread segment, and the thread rotation direction of the first external thread segment is opposite to that of the second external thread segment; the first external thread segment is used to cooperate with the internal thread formed inside the probe fixing wing, and the second external thread segment is used to be connected to the anti-loosening ring.

[0015] Preferably, the anti-loosening assembly comprises a fixing screw, one end of which passes through the anti-loosening ring and is matched and connected with a fixing threaded hole formed on the probe tube fixing wing.

[0016] Preferably, the fixing screws include a plurality of fixing screws, and the plurality of fixing screws are connected to the plurality of fixing threaded holes on the probe fixing wing in a one-to-one correspondence.

[0017] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] Through the present invention, a mining explosion-proof mud pulse probe axial gap adjustment structure can be realized. In one implementation mode, the structure may include a probe, the rear end of which is formed with a positioning groove along its circumference; a probe fixing wing, the interior of which is hollow, the rear end of which is plugged into the interior of the probe fixing wing, a positioning screw is arranged on the probe fixing wing, the axial direction of the positioning screw is perpendicular to the axial direction of the probe fixing wing, and the front end of the positioning screw extends to the interior of the positioning groove to limit the axial freedom of the probe and the probe fixing wing during relative movement; an adjusting screw, the adjusting screw is connected with the internal thread formed inside the probe fixing wing; the front end face of the adjusting screw is in contact with the end face of the rear end of the probe. The mining explosion-proof mud pulse probe axial gap adjustment structure provided by the present application has a simple and reasonable structure and is easy to install and use. The axial gap adjustment of the mining mud pulse probe can be realized when the mining mud pulse probe is assembled with the non-magnetic drill rod. The adjustment method is simple and easy, which ensures that the gap between the probe tube and the circulation sleeve after assembly meets the design requirements, and is worthy of being promoted and used on a large scale.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of an axial clearance adjustment structure of a mining explosion-proof mud pulse probe provided by an embodiment of the present invention.

[0022] In the figure: probe tube 1, positioning groove 11, probe tube fixing wing 2, large diameter section 21, front end face 211 of the large diameter section, small diameter section 22, fixing threaded hole 23, positioning screw 3, adjusting screw 4, anti-loosening ring 51, fixing screw 52, ​​drill rod 6, section F. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0024] Example

[0025] See also Figure 1 , is a mining explosion-proof mud pulse probe axial gap adjustment structure provided by an embodiment of the present invention, such as Figure 1 As shown, the structure includes a probe tube 1, the rear end of which is formed with a positioning groove 11 along its circumference; the probe tube 1 has an independent structure and needs to be assembled inside the drill pipe when in use so that it can cooperate with an independent circulation sleeve to form the overall structure of the pulse probe tube.

[0026] The probe tube fixing wing 2 is hollow inside, the rear end of the probe tube 1 is inserted into the inside of the probe tube fixing wing 2, and a positioning screw 3 is arranged on the probe tube fixing wing 2. The axial direction of the positioning screw 3 is perpendicular to the axial direction of the probe tube fixing wing 2, and the front end of the positioning screw 3 extends to the inside of the positioning groove 11 so as to limit the axial freedom of the probe tube 1 and the probe tube fixing wing 2 when the relative movement occurs; specifically, in order to facilitate the connection between the probe tube fixing wing and the drill rod, the probe tube fixing wing 2 includes a large diameter section 21 and a small diameter section 22, and the positioning screw 3 is formed in the large diameter section 21; the circumferential side surface of the large diameter section 21 is used to abut against the inner surface of the fixing groove of the drill rod 6, and the front end surface 211 of the large diameter section 21 is used to abut against the vertical surface of the fixing groove. The fixing groove formed on the drill rod can be used to accommodate the large diameter section of the probe tube fixing wing, so that the movement of the probe tube fixing wing toward the front end (the end forming the male thread) of the drill rod is limited. In order to ensure that the probe fixing wing is connected to the drill rod without affecting the connection between the rear end of the drill rod (the end forming the female thread) and the front end of the other drill rod, and to ensure that the other drill rod can provide positioning pressure to the probe fixing wing after the rear end is connected to the probe fixing wing, the section formed at the connection between the large diameter section and the small diameter section is flush with the bottom of the inner screw of the drill rod. When the rear end of the drill rod is connected to the front end of the other drill rod, the front end face of the other drill rod will abut against the section formed at the connection between the large diameter section and the small diameter section, so that the large diameter section of the probe fixing wing is positioned between the front end face and the vertical surface of the fixing groove. In order to ensure that the assembly of the probe fixing wing is not affected by the positioning screw, the rear end of the positioning screw 3 does not protrude from the surface of the circumferential side of the large diameter section 21. The positioning screw can be connected to the large diameter section in the form of a countersunk connection. The positioning screw can have a flat end structure at one end of the positioning groove. In order to ensure the stability of the probe fixing wing when sliding relative to the probe, the positioning screw 2 includes a plurality of screws evenly arranged along the circumference of the large diameter section 21.

[0027] The adjusting screw rod 4 is connected with the internal thread formed inside the probe fixing wing 2; the front end face of the adjusting screw rod 4 abuts against the rear end face of the probe 1. The end of the adjusting screw rod away from the probe can be formed with an interface connected to a wrench, so that the adjusting screw rod can be rotated relative to the probe fixing wing by the wrench, and the adjusting screw rod can move horizontally toward one side of the probe under the action of the threaded connection.

[0028] The drill rod provided in the present application may be a non-magnetic drill rod.

[0029] In order to further ensure the stability of the operation of the structure and prevent the problem of loosening, the embodiment of the present application can also provide an anti-loosening component, which includes an anti-loosening ring 51; the adjusting screw 4 is formed with a first external thread section and a second external thread section, and the thread rotation direction of the first external thread section is opposite to the thread rotation direction of the second external thread section; the first external thread section is used to cooperate with the internal thread formed inside the probe fixing wing, and the second external thread section is used to connect with the anti-loosening ring. Specifically, the anti-loosening component includes a fixing screw 52, ​​one end of which passes through the anti-loosening ring 51 and is matched with the fixing thread hole 23 formed on the probe fixing wing 2. The fixing screw 52 includes a plurality of fixing screws, and the plurality of fixing screws 52 are connected to the plurality of fixing thread holes 23 on the probe fixing wing 2 in a one-to-one correspondence. One end of the adjusting screw is a forward thread and the other end is a reverse thread to prevent the screw from coming out during vibration. The anti-loosening ring is used to prevent the adjusting screw from loosening during vibration, so as to avoid affecting the axial clearance and causing the probe pulser to fail to work. Before adjusting the axial clearance with the adjusting screw, multiple fixing screws must be screwed out of the fixing wings; after the adjustment is completed, the fixing screws are screwed into the adjacent fixing wing threaded holes again to fix the anti-loosening ring to prevent the adjusting screw from loosening and causing the axial clearance to fail.

[0030] It should be noted that after the probe is connected to the rear end of the drill rod through the probe fixing wing, the front end of the probe is located at the front end of the drill rod, and the pulser's circulation sleeve is located inside another drill rod connected to the front end of the drill rod. The front end of the probe can be connected with the circulation sleeve. The purpose of the structure provided in this application is to adjust the gap between the front end of the probe and the circulation sleeve. Since the position of the circulation sleeve in the other drill rod is fixed, the gap between the front end of the probe and the circulation sleeve can be adjusted by adjusting the extension length of the probe in the drill rod.

[0031] When the structure is in use, the adjusting screw 4 is first assembled into one with the probe fixing wing 2, and the probe fixing wing 2 is connected to the positioning groove 11 at the rear end of the probe by the positioning screw 3, which is used to limit the axial freedom of the probe 1 and the probe fixing wing 2 when they move relative to each other, but there is an axial range of motion between the two. Finally, the probe fixing wing 2 is assembled into the positioning groove of the non-magnetic drill rod 6. When adjusting the axial gap L, the section F is fixed by other tools. At this time, the probe fixing wing 2 and the drill rod 6 are tightly connected and will not rotate relative to each other. By screwing the adjusting screw, the probe is pushed to the front end and slid until it stops. The tool can be a fixed body including an external thread section adapted to the internal thread of the drill rod.

[0032] In summary, the axial clearance adjustment structure of the explosion-proof mud pulse probe provided by the present application is simple and reasonable in structure and easy to install and use. The axial clearance adjustment of the mining mud pulse probe and the non-magnetic drill pipe can be realized. The adjustment method is simple and easy to operate, ensuring that the clearance between the probe and the circulation sleeve after assembly meets the design requirements, and is worthy of large-scale promotion and use.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An axial clearance adjustment structure for explosion-proof mud pulse probe for mining, characterized in that: include: A probe tube, wherein a positioning groove is formed at the rear end of the probe tube along the circumference thereof; A probe tube fixing wing, wherein the interior of the probe tube fixing wing is hollow, the rear end of the probe tube is plugged into the interior of the probe tube fixing wing, a positioning screw is arranged on the probe tube fixing wing, the axial direction of the positioning screw is perpendicular to the axial direction of the probe tube fixing wing, and the front end of the positioning screw extends to the interior of the positioning groove so as to limit the axial freedom of the probe tube and the probe tube fixing wing when they move relative to each other; An adjusting screw rod, the adjusting screw rod is connected in cooperation with an internal thread formed inside the fixed wing of the probe tube; the front end face of the adjusting screw rod abuts against the rear end face of the probe tube; The probe fixing wing includes a large diameter section and a small diameter section, and the positioning screw is formed in the large diameter section; the circumferential side surface of the large diameter section is used to abut against the inner surface of the fixing groove of the drill rod, and the front end surface of the large diameter section is used to abut against the vertical surface of the fixing groove; It also includes an anti-loosening component, which includes an anti-loosening ring; the adjusting screw is formed with a first external thread section and a second external thread section, and the thread rotation direction of the first external thread section is opposite to the thread rotation direction of the second external thread section; the first external thread section is used to cooperate with the internal thread formed inside the probe fixing wing, and the second external thread section is used to be connected to the anti-loosening ring.

2. The axial clearance adjustment structure of the explosion-proof mud pulse probe for mining according to claim 1 is characterized in that: The cross section formed at the connection between the large diameter section and the small diameter section is flush with the bottom of the inner thread of the drill rod.

3. The axial gap adjustment structure of the explosion-proof mud pulse probe for mining according to claim 1 is characterized in that: The rear end of the positioning screw does not protrude from the surface of the circumferential side surface of the large diameter section.

4. The axial gap adjustment structure of the explosion-proof mud pulse probe for mining according to claim 3 is characterized in that: The positioning screws include a plurality of positioning screws uniformly arranged along the circumference of the large diameter section.

5. The axial gap adjustment structure of the explosion-proof mud pulse probe for mining according to claim 1 is characterized in that: The drill rod is a non-magnetic drill rod.

6. The axial clearance adjustment structure of the explosion-proof mud pulse probe for mining according to claim 5 is characterized in that: The anti-loosening assembly comprises a fixing screw, one end of which passes through the anti-loosening ring and is matched and connected with a fixing threaded hole formed on the probe fixing wing.

7. The axial gap adjustment structure of the explosion-proof mud pulse probe for mining according to claim 6 is characterized in that: The fixing screws include a plurality of fixing screws, and the plurality of fixing screws are connected to the plurality of fixing threaded holes on the probe fixing wing in a one-to-one correspondence.

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