A sealing connection structure of acoustic detection pipe
By designing the connection screw sleeve, fixed sleeve, connecting nut and sealing ring on the acoustic measuring tube, the problem of difficulty in connecting the acoustic measuring tube and insufficient sealing is solved, simple operation and efficient sound wave conduction are achieved, and the Inspection accuracy and sealing.
Patent Information
- Application Number
- CN202211728615.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2042-12-29
AI Technical Summary
The connection of the acoustic measuring tube is laborious, especially the long and heavy acoustic measuring tube is difficult to operate when connected, which affects the detection efficiency and accuracy.
A sealed connection structure of acoustic measuring tube is designed, by setting a connecting screw sleeve and a fixing sleeve at one end of the acoustic measuring tube, and tightening connection is achieved using connecting nuts and abutment rings to simplify operation, and through sealing rings and limits Position ring improves sealing and acoustic wave conduction effect.
It realizes simple, convenient and labor-saving operation of the connection of acoustic measuring tubes, improves the sound wave conduction effect and the accuracy of detection results, reduces the possibility of leakage of water and concrete slurry, and enhances the sealing of the acoustic measuring tubes.
Smart Images
Figure CN116223616B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of acoustic detection pipe construction, and in particular to a sealing connection structure of an acoustic detection pipe. Background Art
[0002] The sonic detection tube is the passage for the probe to enter the pile body when ultrasonic testing is performed on the cast-in-place pile. During construction, the sonic detection tube needs to be pre-buried in the cast-in-place pile along with the steel bar skeleton of the cast-in-place pile. When performing ultrasonic testing, water needs to be injected into the sonic detection tube to facilitate the conduction of sound waves, thereby improving the accuracy of the test results.
[0003] The acoustic detection pipe pre-buried in the cast-in-place pile is generally formed by connecting multiple sections of acoustic detection pipe end to end. The related art discloses an acoustic detection pipe structure, wherein the outer peripheral wall of one end is integrally formed with an external thread, and the other end is integrally formed with a docking sleeve, and the inner peripheral wall of the docking sleeve is integrally formed with an internal thread; when two acoustic detection pipes are connected, the end of one acoustic detection pipe with an external thread is screwed into the docking sleeve of the other acoustic detection pipe.
[0004] With respect to the above-mentioned related technologies, the inventors believe that when two acoustic detection tubes are connected, one of the acoustic detection tubes needs to be rotated as a whole; when a single acoustic detection tube is long and heavy, it is easy to cause laborious operation, so there is room for improvement. Summary of the invention
[0005] The purpose of the present application is to provide a sealing connection structure for an acoustic detection tube, so as to improve the problem that the connection operation of the acoustic detection tube is relatively laborious.
[0006] The present application provides a sealing connection structure for an acoustic detection pipe, which adopts the following technical solution:
[0007] A sealing connection structure for acoustic detection tubes comprises a connecting screw sleeve for sealingly sleeved on one end of one of the acoustic detection tubes and a fixed sleeve for sealingly sleeved on one end of the other acoustic detection tube; a connecting sleeve inserted into the connecting screw sleeve is provided at one end of the fixed sleeve away from the corresponding acoustic detection tube, and the end wall of the fixed sleeve is used to abut against the end wall of the connecting screw sleeve; the fixed sleeve is sleeved with a connecting nut, and the connecting nut is provided with an abutment ring for abutting against the end wall of the fixed sleeve away from the connecting sleeve; the inner peripheral wall of the connecting nut is threadedly connected with the outer peripheral wall of the connecting screw sleeve.
[0008] By adopting the above technical solution, when two acoustic detection tubes need to be connected to each other, the connecting sleeve of one acoustic detection tube is inserted into the connecting screw sleeve of the other acoustic detection tube; then the connecting nut is rotated to tighten the connecting nut so that the abutment ring is pressed against the fixed sleeve, so that the end wall of the connecting screw sleeve is pressed against the end wall of the fixed sleeve, so that the connecting screw sleeve and the fixed sleeve can be sealed and fixed to each other, so that the corresponding two acoustic detection tubes are sealed and connected to each other. When the two acoustic detection tubes are connected to each other, after the corresponding connecting sleeve is plugged into the connecting screw sleeve, only the connecting nut needs to be tightened, which is simple, convenient and labor-saving to operate.
[0009] Optionally, a mating annular surface is provided along the circumference of the end wall of the fixed sleeve away from the connecting sleeve, and the mating annular surface extends along the axial direction of the fixed sleeve toward the connecting sleeve and is inclined toward the axial direction away from the fixed sleeve; the mating annular surface is connected to the end wall of the corresponding end of the fixed sleeve close to the connecting sleeve; and the inner circumferential wall of the abutment ring is in contact with the mating annular surface.
[0010] By adopting the above technical solution, the connecting nut is tightened, and the inner peripheral wall of the abutting ring is tightly attached to the matching ring surface, so that hard contact is formed between the connecting nut and the fixed sleeve, which is beneficial to the conduction of sound waves.
[0011] Optionally, an end wall of the abutment ring close to one end of the connecting sleeve is flush with an end wall of the fixing sleeve, and a length of the abutment ring is less than or equal to a length of the fixing sleeve.
[0012] By adopting the above technical solution, the possibility of a gap between the connecting nut and the fixed sleeve is reduced, so that all parts of the connecting nut located at the abutment ring position form hard contact with the fixed sleeve, further facilitating the conduction of sound waves, thereby further improving the accuracy of the detection results.
[0013] Optionally, the outer peripheral wall of the connecting sleeve is provided with a sealing ring for abutting against the end wall of the connecting nut.
[0014] By adopting the above technical solution, the sealing ring can be pressed against the end wall of the fixed sleeve to improve the sealing of the connection between the connecting sleeve and the fixed sleeve, reducing the possibility of water in the acoustic detection tube leaking outward or liquid in the concrete slurry leaking into the acoustic detection tube, thereby facilitating the accuracy of the ultrasonic detection results.
[0015] Optionally, the connecting screw sleeve is provided with an abutment surface for abutting against the sealing ring along its circumference; one end of the abutment surface is connected to the inner circumferential wall of the connecting screw sleeve, and the other end extends toward the fixed sleeve and is inclined toward the axial direction away from the connecting screw sleeve.
[0016] By adopting the above technical solution, the connecting nut is rotated so that the abutting surface can abut against the sealing ring; the abutting surface exerts an axial and radial force on the sealing ring along the connecting sleeve, so that the peripheral wall of the sealing ring abuts against the end wall of the fixed sleeve and the outer peripheral wall of the connecting sleeve, thereby facilitating further improving the sealing performance of the connection between the connecting nut and the fixed sleeve.
[0017] Optionally, a gap is provided between the connecting sleeve and the end walls of the acoustic detection tube located in the connecting screw sleeve that face each other.
[0018] By adopting the above technical solution, the water in the acoustic detection tube can flow from the gap between the connecting sleeve and the corresponding acoustic detection tube into the gap between the outer wall of the connecting sleeve and the inner wall of the connecting screw sleeve to fill the gap between the outer wall of the connecting sleeve and the inner wall of the connecting screw sleeve, thereby facilitating the conduction of sound waves and helping to improve the accuracy of the detection results.
[0019] Optionally, a limiting ring is provided on the inner wall of the connecting screw sleeve, and the limiting ring is located between the corresponding acoustic detection tube and the connecting sleeve; the end wall at one end of the limiting ring is used to abut against the end wall of the corresponding acoustic detection tube, and a gap for liquid flow is provided between the end wall at the other end and the end wall of the connecting sleeve.
[0020] By adopting the above technical solution, when connecting the connecting sleeve and the acoustic detection tube, it is only necessary to abut the end wall of the corresponding acoustic detection tube with the limit ring to ensure that there is a gap between the end wall of the connecting sleeve and the corresponding acoustic detection tube and the limit ring after docking, thereby facilitating the installation of the connecting sleeve.
[0021] Optionally, a limiting ring is provided on the inner circumferential wall of the connecting screw sleeve, and the limiting ring is located between the corresponding acoustic detection tube and the connecting sleeve; the end wall of one end of the limiting ring is used to abut against the end wall of the corresponding acoustic detection tube, and the end wall of the other end abuts against the end wall of the connecting sleeve; the connecting sleeve is provided with a clearance notch along its radial direction, and the inner side wall of the clearance notch is connected to the end wall of the connecting sleeve toward the limiting ring.
[0022] By adopting the above technical solution, the water in the connecting screw sleeve can flow into the gap between the outer peripheral wall of the connecting sleeve and the inner peripheral wall of the connecting screw sleeve through the gap to fill the gap between the outer peripheral wall of the connecting sleeve and the inner peripheral wall of the connecting screw sleeve, thereby facilitating the conduction of sound waves and improving the accuracy of the detection results.
[0023] Optionally, a plug is also included, which includes a sealing sleeve for sealingly sleeved on the outer periphery of the connecting sleeve and a sealing screw sleeve for threadedly cooperating with the connecting screw sleeve; the sealing sleeve is connected to the sealing screw sleeve; one end of the sealing sleeve is closed.
[0024] By adopting the above technical solution, when the acoustic detection tube is transported or stored, plugs are installed at both ends of the acoustic detection tube to allow the sealing sleeve to seal the connecting sleeve and the sealing screw to seal the connecting screw, thereby reducing the possibility of dust and other debris entering the acoustic detection tube; at the same time, the sealing sleeve can cover the connecting sleeve and the sealing screw can cover the connecting screw, thereby reducing the possibility of deformation or cracking of the connecting sleeve or the connecting screw due to extrusion. On the other hand, when the acoustic detection tube is lowered, the lower end of the acoustic detection tube at the lowest position can be sealed by the sealing sleeve or the sealing screw; when the concrete is poured, the upper end of the acoustic detection tube at the highest position can be sealed by the sealing sleeve or the sealing screw, which is beneficial to improve the sealing performance of the acoustic detection tube and reduce the possibility of water in the pile hole or concrete slurry entering the acoustic detection tube.
[0025] In summary, the present application includes at least one of the following beneficial technical effects:
[0026] 1. When two acoustic detection tubes are connected to each other, insert the connecting sleeve of one acoustic detection tube into the connecting screw sleeve of the other acoustic detection tube; then turn the connecting nut and tighten the connecting nut. The operation is simple, convenient and labor-saving;
[0027] 2. The inner circumferential wall of the abutment ring is in close contact with the mating ring surface, so that all parts of the connecting nut located at the abutment ring position form hard contact with the fixed sleeve, which is conducive to the conduction of sound waves;
[0028] 3. The water in the acoustic detection tube can flow from the gap between the connecting sleeve and the corresponding acoustic detection tube into the gap between the outer peripheral wall of the connecting sleeve and the inner peripheral wall of the connecting screw sleeve to fill the gap between the outer peripheral wall of the connecting sleeve and the inner peripheral wall of the connecting screw sleeve, thereby facilitating the conduction of sound waves and improving the accuracy of the detection results;
[0029] 4. When pouring concrete, sealing the upper end of the acoustic detection tube at the uppermost position by using a plugging sleeve or a plugging screw sleeve is beneficial to improving the sealing performance of the acoustic detection tube and reducing the possibility of water in the pile hole or concrete slurry entering the acoustic detection tube; at the same time, the plugging sleeve has a protective effect on the connecting sleeve, and the plugging screw sleeve has a protective effect on the connecting screw sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is an overall schematic diagram of Example 1 of a sealing connection structure of an acoustic testing tube of the present application.
[0031] Figure 2 It is an exploded schematic diagram for illustrating the connection structure between the connecting nut and the connecting nut sleeve in Example 1 of the present application.
[0032] Figure 3 is along Figure 1 Schematic diagram of the cross-section along line AA.
[0033] Figure 4 yes Figure 3 Enlarged view of part B in .
[0034] Figure 5 It is a schematic diagram of the overall structure of Example 2 for demonstrating a sealing connection structure of an acoustic testing tube of the present application.
[0035] Figure 6 It is an exploded diagram used to show the plug structure.
[0036] Figure 7 It is a cross-sectional schematic diagram for demonstrating the matching relationship between a connecting sleeve and a limiting ring of Example 3 of a sealing connection structure of an acoustic testing tube of the present application.
[0037] Figure 8 It is a schematic diagram for illustrating the connecting sleeve structure in Example 3.
[0038] In the figure, 1. connecting sleeve; 11. abutment surface; 12. limit ring; 2. fixed sleeve; 21. matching ring surface; 3. acoustic detection tube; 4. connecting sleeve; 41. sealing ring; 42. clearance gap; 5. connecting nut; 51. abutment ring; 6. plug; 61. sealing sleeve; 62. sealing sleeve. DETAILED DESCRIPTION
[0039] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.
[0040] Example 1
[0041] A sealing connection structure of an acoustic detection pipe, referring to Figure 1 and Figure 2 , including a connecting screw sleeve 1 and a fixed sleeve 2. The connecting screw sleeve 1 is in the shape of a tube with two ends passing through; one end of the connecting screw sleeve 1 is used to be sleeved on the outer peripheral wall of one end of one of the acoustic detection tubes 3, and the inner peripheral wall of the connecting screw sleeve 1 is glued and fixed to the outer peripheral wall of the corresponding acoustic detection tube 3; the outer peripheral wall of the connecting screw sleeve 1 away from the corresponding acoustic detection tube 3 is provided with an external thread. The material of the acoustic detection tube 3 in this embodiment is plastic material; in another embodiment, the material of the acoustic detection tube 3 can also be stainless steel material, and the inner peripheral wall of the corresponding connecting screw sleeve 1 is welded and fixed to the outer peripheral wall of the acoustic detection tube 3, so that the connecting screw sleeve 1 and the corresponding acoustic detection tube 3 are sealed and connected to each other.
[0042] Reference Figure 2 A connecting sleeve 4 is coaxially arranged at one end of the fixed sleeve 2, and the outer peripheral wall of the connecting sleeve 4 is integrally connected with the inner peripheral wall of the fixed sleeve 2. The end of the fixed sleeve 2 away from the connecting sleeve 4 is used to be sleeved on one end of another acoustic detection tube 3; the end wall of the corresponding acoustic detection tube 3 abuts against the end wall of the connecting sleeve 4, and the outer peripheral wall of the acoustic detection tube 3 is glued and fixed to the inner peripheral wall of the fixed sleeve 2.
[0043] Reference Figure 3 and Figure 4 , the outer peripheral wall of the connecting sleeve 4 is provided with a sealing ring 41, and the sealing ring 41 includes an O-type rubber ring. The inner peripheral wall of the connecting screw sleeve 1 is provided with an abutting surface 11, and the abutting surface 11 is opened in a closed ring along the circumference of the connecting screw sleeve 1. One end of the abutting surface 11 is connected to the inner peripheral wall of the connecting screw sleeve 1, and the other end extends toward the fixed sleeve 2 and is inclined in the axial direction away from the connecting sleeve 4, and the abutting surface 11 is connected to the end wall of the corresponding end of the connecting sleeve 4. When two acoustic detection tubes 3 are connected, the connecting sleeve 4 on one of the acoustic detection tubes 3 is inserted into the connecting screw sleeve 1 on the other acoustic detection tube 3; then the connecting screw sleeve 1 and the connecting sleeve 4 are brought close to each other so that the abutting surface 11 abuts against the sealing ring 41, so that the peripheral wall of the sealing ring 41 can abut against the end wall of the fixed sleeve 2 and the outer peripheral wall of the connecting sleeve 4 at the same time.
[0044] Reference Figure 3 and Figure 4 The outer peripheral wall of the fixed sleeve 2 is sleeved with a connecting nut 5, and the inner peripheral wall of the end of the connecting nut 5 away from the connecting screw sleeve 1 is integrally formed with an abutting ring 51. The end wall of the fixed sleeve 2 away from the connecting sleeve 4 is integrally formed with a matching annular surface 21; the matching annular surface 21 is a closed annular shape along the circumference of the fixed sleeve 2. The end of the matching annular surface 21 away from the connecting sleeve 4 is connected to the end wall of the corresponding end of the fixed sleeve 2, and the other end extends toward the connecting sleeve 4 and tilts toward the axial direction away from the fixed sleeve 2, and the end of the matching annular surface 21 close to the connecting sleeve 4 is connected to the end wall of the corresponding end of the fixed sleeve 2. The inner peripheral wall of the end of the connecting nut 5 away from the abutting ring 51 is provided with an internal thread for the connecting nut 5 to be threadedly matched with the connecting screw sleeve 1. Tightening the connecting nut 5 can make the abutting ring 51 abut against the matching annular surface 21, and at the same time make the abutting surface 11 abut against the sealing ring 41, so that the fixed sleeve 2 and the connecting screw sleeve 1 are fixed to each other and sealed.
[0045] Reference Figure 3 and Figure 4 , the length of the abutment ring 51 is less than the length of the fixed sleeve 2; the inner circumferential wall of the abutment ring 51 is conical, and the end of the abutment ring 51 with a smaller inner diameter is located at the end of the abutment ring 51 away from the connecting nut 1. When the connecting nut 5 is tightened, the inner circumferential wall of the abutment ring 51 is in close contact with the matching annular surface 21, and the end wall of the end of the abutment ring 51 with a larger outer diameter is flush with the end wall of the corresponding end of the fixed sleeve 2, so as to reduce the possibility of a gap between the inner circumferential wall of the connecting nut 5 located at the position of the abutment ring 51 and the outer circumferential wall of the fixed sleeve 2. In another embodiment, the length of the abutment ring 51 can also be equal to the length of the fixed sleeve 2.
[0046] Reference Figure 3 and Figure 4The inner peripheral wall of the connecting screw sleeve 1 is integrally formed with a limiting ring 12 for abutment of the end wall of the acoustic detection tube 3 inserted in the connecting screw sleeve 1, thereby limiting the length of the corresponding acoustic detection tube 3 inserted into the connecting screw sleeve 1. The length of the connecting sleeve 4 is smaller than the distance between the end wall of the connecting sleeve 1 at one end close to the fixed sleeve 2 and the limiting ring 12, so that the connecting sleeve 4 and the end walls facing each other are separated from each other, so that the water in the connecting screw sleeve 1 can flow from the gap between the connecting sleeve 4 and the limiting ring 12 to the outer peripheral wall of the connecting sleeve 4, so that the water can fill the space between the outer peripheral wall of the connecting sleeve 4 and the inner peripheral wall of the connecting screw sleeve 1, thereby facilitating the conduction of sound waves.
[0047] The implementation principle of the embodiment of the present application is:
[0048] When two acoustic detection tubes 3 are connected, the connecting sleeve 4 on one of the acoustic detection tubes 3 is inserted into the connecting nut 1 on the other acoustic detection tube 3; then the connecting nut 5 is rotated to tighten the connecting nut 5, so that the end wall of the connecting nut 1 is tightly abutted against the end wall of the fixed sleeve 2, and the inner circumferential wall of the abutting ring 51 is tightly abutted against the matching annular surface 21, so that the corresponding two acoustic detection tubes 3 can be fixed to each other and sealed, which is simple to operate and labor-saving.
[0049] Example 2
[0050] The difference between this embodiment and embodiment 1 is that:
[0051] Reference Figure 5 and Figure 6 The acoustic detection tube sealing connection structure also includes a plug 6. During assembly, the fixed sleeve 2 is installed on the end of the acoustic detection tube 3 away from the connecting screw sleeve 1. The plug 6 includes a plugging sleeve 61 and a plugging screw sleeve 62; the plugging screw sleeve 62 is in the shape of a tube with two ends passing through, one end of the plugging sleeve 61 is closed, and the open end of the plugging sleeve 61 is integrally connected with one end of the plugging screw sleeve 62, so that the inside of the plugging sleeve 61 communicates with the inside of the plugging screw sleeve 62.
[0052] Reference Figure 5 and Figure 6 The inner wall of the end of the plugging screw 62 away from the plugging sleeve 61 is provided with an internal thread, so that the plugging screw 62 can be threadedly matched with the connecting screw 1, so that the plugging screw 62 can plug the connecting screw 1, thereby plugging the corresponding end of the acoustic detection tube 3. The inner diameter of the plugging sleeve 61 is equal to the inner diameter of the connecting sleeve 4, so that the plugging sleeve 61 can be sleeved on the outer periphery of the connecting sleeve 4 through the plugging screw 62 to plug the corresponding connecting sleeve 4, thereby plugging the corresponding end of the acoustic detection tube 3.
[0053] Reference Figure 5 and Figure 6During construction, after connecting multiple sections of the acoustic detection tube 3 to each other, one end of the acoustic detection tube 3 is blocked by the blocking sleeve 61, and the other end of the acoustic detection tube 3 is blocked by the blocking screw sleeve 62 to reduce the possibility of concrete slurry and other debris entering the acoustic detection tube 3 to ensure the cleanliness of the acoustic detection tube 3, so as to facilitate the later insertion of an ultrasonic probe into the acoustic detection tube 3 for ultrasonic detection of the formed cast-in-place pile.
[0054] Example 3
[0055] The difference between this embodiment and embodiment 1 is that:
[0056] Reference Figure 7 and Figure 8 The end wall of the connecting sleeve 4 facing the limiting ring 12 is in contact with the end wall of the limiting ring 12, and the connecting sleeve 4 is provided with a clearance notch 42 in its radial direction, and a plurality of clearance notches 42 are provided in sequence along the circumference of the connecting sleeve 4. All the clearance notches 42 are located at the end of the connecting sleeve 4 close to the limiting ring 12, and the inner side wall of each clearance notch 42 is connected to the end wall of the corresponding end of the connecting sleeve 4. The water in the connecting screw sleeve 1 can flow from the clearance notch 42 to the gap between the outer peripheral wall of the connecting sleeve 4 and the inner peripheral wall of the connecting screw sleeve 1 to improve the conductivity of the sound wave.
[0057] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A sealing connection structure of an acoustic detection tube, characterized in that: The invention comprises a connecting screw sleeve (1) for sealingly sleeved on one end of one of the acoustic detection tubes (3) and a fixed sleeve (2) for sealingly sleeved on one end of the other acoustic detection tube (3); an end wall of the fixed sleeve (2) away from the corresponding acoustic detection tube (3) is provided with a connecting sleeve (4) inserted into the connecting screw sleeve (1), and the end wall of the fixed sleeve (2) is used to abut against the end wall of the connecting screw sleeve (1); the fixed sleeve (2) is sleeved with a connecting nut (5), and the connecting nut (5) is provided with a connecting nut for abutting against the end wall of the connecting screw sleeve (1); The end wall of the fixed sleeve (2) at one end facing away from the connecting sleeve (4) abuts against an abutment ring (51); the inner peripheral wall of the connecting nut (5) is threadedly connected to the outer peripheral wall of the connecting nut (1); the end wall of the fixed sleeve (2) at one end facing away from the connecting sleeve (4) is provided with a matching annular surface (21) along its circumference, the matching annular surface (21) extending in the axial direction of the fixed sleeve (2) in the direction of the connecting sleeve (4) and inclined in the axial direction away from the fixed sleeve (2); the matching annular surface (21) is close to the connecting sleeve One end of the tube (4) is connected to the end wall of the corresponding end of the fixed sleeve (2); the inner circumferential wall of the abutment ring (51) is in contact with the matching annular surface (21); the end wall of the abutment ring (51) close to the connecting sleeve (4) is flush with the end wall of the fixed sleeve (2), and the length of the abutment ring (51) is less than or equal to the length of the fixed sleeve (2); a gap is provided between the connecting sleeve (4) and the end walls of the acoustic detection tube (3) located in the connecting screw sleeve (1) facing each other; the connecting screw sleeve (1) A limit ring (12) is provided on the inner peripheral wall of the connecting sleeve (4), and the limit ring (12) is located between the corresponding acoustic detection tube (3) and the connecting sleeve (4); the end wall of one end of the limit ring (12) is used to abut against the end wall of the corresponding acoustic detection tube (3), and the end wall of the other end abuts against the end wall of the connecting sleeve (4); the connecting sleeve (4) is provided with a clearance notch (42) penetrating along its radial direction, and the inner side wall of the clearance notch (42) is connected to the end wall of the connecting sleeve (4) facing the limit ring (12).
2. The acoustic detection tube sealing connection structure according to claim 1, characterized in that: The outer peripheral wall of the connecting sleeve (4) is sleeved with a sealing ring (41) for abutting against the end wall of the connecting screw sleeve (1).
3. The acoustic detection tube sealing connection structure according to claim 1, characterized in that: The connecting screw sleeve (1) is provided with an abutment surface (11) along its circumference for abutting against the sealing ring (41); one end of the abutment surface (11) is in contact with the inner circumferential wall of the connecting screw sleeve (1), and the other end extends in the direction of the fixed sleeve (2) and is inclined in the direction away from the axis of the connecting screw sleeve (1).
4. The acoustic detection tube sealing connection structure according to claim 1, characterized in that: The invention also comprises a plug (6), the plug (6) comprising a sealing sleeve (61) for sealingly sleeved on the outer periphery of the connecting sleeve (4) and a sealing screw sleeve (62) for threadingly engaging with the connecting screw sleeve (1); the sealing sleeve (61) is connected to the sealing screw sleeve (62); one end of the sealing sleeve (61) is closed.