CN109060274B - Detection device and test method for underwater breathing tube joint - Google Patents
Detection device and test method for underwater breathing tube joint Download PDFInfo
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- CN109060274B CN109060274B CN201810967658.8A CN201810967658A CN109060274B CN 109060274 B CN109060274 B CN 109060274B CN 201810967658 A CN201810967658 A CN 201810967658A CN 109060274 B CN109060274 B CN 109060274B
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 71
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000010998 test method Methods 0.000 title description 3
- 210000001503 joint Anatomy 0.000 claims description 52
- 230000006835 compression Effects 0.000 claims description 34
- 238000007906 compression Methods 0.000 claims description 34
- 238000003466 welding Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000004807 localization Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 description 6
- 230000009189 diving Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a detection device and a detection method for an underwater breathing tube joint. And determining a counterweight, wherein the counterweight is determined according to the stress requirement of the detected interface, and the counterweight has the function of providing a fixing force for the detected connector. Starting an air compressor, injecting compressed air into the detected breathing tube, closing a valve on the pressing tube according to the requirement of a customer, observing whether the air pressure of a pressure gauge connected with the pressing tube changes or not after fifteen minutes to thirty minutes, and indicating that no air leakage occurs at an interface A or an interface B or an interface C or an interface D connected with the detected breathing tube if the air pressure of the pressure gauge does not change, so that the detected breathing tube is qualified; if the pressure gauge is low, the air leakage of the interface A or the interface B or the interface C or the interface D connected with the detected breathing tube is detected, and the further detection is performed. Realizes localization, solves the quality detection problem of the breathing tube and the tube joint, and provides a life support for divers.
Description
Technical Field
The invention relates to a detection device and a detection method for an underwater breathing tube joint, in particular to a detection device and a detection method for detecting sealing performance of joints at two ends of a breathing tube.
Background
In the past, the diving staff dives the breathing tube, users purchase from abroad, the joint of the breathing tube is connected, and the user can use the breathing tube according to the quality detection assurance list provided by abroad, but the cost is higher, the purchasing procedure is complicated, and time and effort are wasted.
Later users put forward a breathing tube with a connector which can be used in China, the enterprise starts to produce the breathing tube and process the connector, a great number of diving specifications are consulted for guaranteeing the safety of diving personnel, and a detection device and a detection method of the underwater breathing tube connector are designed according to the specification requirements of diving units on the breathing tube and the connector.
Disclosure of Invention
In view of the state of the art and the requirements, the invention provides a detection device and a test method for an underwater breathing tube joint, and aims to realize localization of the breathing tube with the joint, and ensure that the breathing tube with the joint meets the quality requirements of users through the detection device.
The technical scheme adopted by the invention is as follows: the utility model provides a detection device of breathing tube joint under water, includes screw thread clamp I, conical surface joint I, compression joint I, the breathing tube of being detected, screw thread clamp II, conical surface joint II, compression joint II, air compressor's the pipe of beating, screw thread clamp I upper end mesopore is emboliaed conical surface joint I bottom and is constituteed interface A through the necking down machine throat, compression joint I emboliaed conical surface joint I's upper end, the one port I of breathing tube inserts between compression joint I and the conical surface joint I and constitutes interface B through the necking down machine throat;
the middle hole at the upper end of the thread clamp II is sleeved into the bottom end of the conical surface joint II and forms an interface C through a necking machine, the compression joint II is sleeved into the upper end of the conical surface joint II, and the other port II of the breathing tube is inserted between the compression joint II and the conical surface joint II and forms an interface D through a necking machine;
the method is characterized in that: the device also comprises a bracket, a welding joint, a clamping plate I, a clamping plate II, a clamping plate III, a clamping plate IV, a key, a clamping plate V, a clamping plate VI, a threaded clamp III, a conical surface joint III, a compression joint III, a wire-aligning joint, a double-head screw rod, a lifting ring, a UCP bearing, a shaft, a lifting hook, a counterweight, a large chain wheel, a small chain wheel and a small chain wheel;
the two beams at the upper end of the bracket are symmetrically fixed with one UCP bearing, the shaft is respectively fixed with a large chain wheel and a small chain wheel, two ends of the shaft are respectively arranged in the two UCP bearings, one end of the small chain wheel is meshed with the small chain wheel teeth and is fixed on the small chain wheel through a key, the other end of the small chain wheel is connected with one end of the lifting hook, one end of the large chain wheel is meshed with the large chain wheel teeth and is fixed on the large chain wheel through a key, the other end of the large chain wheel is connected with the counterweight, and the lower end of the welded joint is fixed on the beam in the middle of the lower end of the bracket;
the middle hole at the upper end of the thread clamp III is sleeved into the bottom end of the conical surface joint III and forms an interface E through a necking machine, the compression joint III is sleeved into the upper end of the conical surface joint III, and a pressing pipe of an air compressor is inserted between the compression joint III and the conical surface joint III and forms an interface F through a necking machine;
the clamping plates V and VI are in butt joint, round holes formed by semicircular holes in the middle of the clamping plates V and semicircular holes in the middle of the clamping plates VI are sleeved on the connector E, a clamping plate V and a clamping plate VI are respectively clamped on the two sides of the clamping plates V and VI after butt joint, two hanging rings are respectively inserted into the round holes in the two sides of the clamping plates V and VI after butt joint, kong in the clamping plates V and Kong in the clamping plates VI are connected with nuts, and the clamping plates V and VI are fixed on the clamping plates V and VI;
the other end of the lifting hook is respectively hooked with the two lifting rings, and one end of the wire-pair connector is screwed with the thread clamp III;
the clamping plates I and II are in butt joint, a round hole formed by a semicircular hole in the middle of the clamping plate I and a semicircular hole in the middle of the clamping plate II after butt joint is sleeved on an interface A of the breathing tube, a clamping plate II and a clamping plate I are respectively clamped below two sides of the clamping plate I and the clamping plate II after butt joint, the lower ends of two double-headed screws are respectively inserted into the round holes in two sides of the clamping plate I and the clamping plate II after butt joint and the middle holes I and the middle holes II of the clamping plate I, and the clamping plate I and the clamping plate II are fixed on the clamping plate I and the clamping plate II through nuts;
the clamping plates III and IV are in butt joint, round holes formed by semicircular holes in the middle of the clamping plates III and semicircular holes in the middle of the clamping plates IV are sleeved on an interface C of the breathing tube, a clamping plate III and a clamping plate IV are respectively clamped below two sides of the clamping plates III and IV after butt joint, the upper ends of two double-headed screws are respectively inserted into the round holes in two sides of the clamping plates III and IV after butt joint and Kong in the middle holes III and the clamping plates IV of the clamping plates III and IV, and the clamping plates III and IV are fixed on the clamping plates III and IV through nuts;
the upper end of the welding joint is connected with the middle hole at the bottom end of the thread clamp I in a threaded manner, and the other end of the opposite thread joint is connected with the thread clamp II in a threaded manner.
The application method of the detection device for the underwater breathing tube joint is characterized by comprising the following steps:
firstly, butt-jointing a clamp plate I and a clamp plate II, sleeving a round hole formed by a semicircular hole in the middle of the clamp plate I and a semicircular hole in the middle of the clamp plate II on an interface A of a breathing tube after butt-jointing, respectively clamping a clamp plate II and a clamp plate I below two sides of the clamp plate I and the clamp plate II after butt-jointing, respectively inserting the lower ends of two double-headed screws into the round holes in two sides of the clamp plate I and the clamp plate II and the middle hole I of the clamp plate I after butt-jointing, fixing the clamp plate I and the clamp plate II on the clamp plate I and the clamp plate II through nuts, and screwing the upper ends of welding joints with the middle holes in the bottom ends of the threaded clamp I;
the clamping plates III and IV are in butt joint, round holes formed by semicircular holes in the middle of the clamping plates III and semicircular holes in the middle of the clamping plates IV are sleeved on an interface C of the breathing tube, a clamping plate III and a clamping plate IV are respectively clamped below two sides of the clamping plates III and IV after butt joint, the upper ends of two double-headed screws are respectively inserted into the round holes in two sides of the clamping plates III and IV after butt joint and Kong in the middle holes III and IV of the clamping plates III and IV, the clamping plates III and IV are fixed on the clamping plates III and IV through nuts, the upper ends of the welding joints are in threaded connection with middle holes in the bottom ends of the threaded clamp I, and the other ends of the welding joints are in threaded connection with the threaded clamp II;
step two, determining a counterweight, wherein the counterweight is determined according to the conversion of the stress requirement of the detected interface, and the counterweight is converted according to the formula g=t× (Z1/Z2), wherein G is the weight of the counterweight, T is the stress required by the detected interface, Z1 is the number of teeth of the small chain wheel, Z2 is the number of teeth of the large chain wheel, and the counterweight has a fixed force on the detected interface;
starting an air compressor, injecting compressed air into the breathing tube of which the pressure is tens or hundreds of meters to be detected through a pressing pipe and a wire connector of the air compressor in sequence, wherein the pressure of the air is generally according to the requirements of customers, such as 20bar, 30bar, the interval is between 0 and 250bar, closing a valve on the pressing pipe, observing whether the air pressure of a pressure gauge connected with the pressing pipe changes or not after fifteen minutes to thirty minutes, and indicating whether the interface A or the interface B or the interface C or the interface D connected with the breathing tube of which the pressure is tens or hundreds of meters is not air-leaking or not;
if the pressure gauge is low, the interface A or B or C or D connected with the detected breathing tube of tens or hundreds of meters is air-leaking, and then further checking
Whether the interface A formed by the necking of the necking machine is not connected with air leakage after the middle hole at the upper end of the breathing tube thread clamp I is sleeved at the bottom end of the conical connector I or whether the interface B formed by the necking of the necking machine is not connected with air leakage after one port I of the breathing tube is inserted between the compression connector I and the conical connector I, or whether the interface C formed by the necking of the necking machine is not connected with air leakage after the middle hole at the upper end of the thread clamp II is sleeved at the bottom end of the conical connector II or whether the interface D formed by the necking of the necking machine is not connected with air leakage after the other port II of the breathing tube is inserted between the compression connector II and the conical connector II, and detecting the interface of air leakage to indicate that the detected breathing tube is unqualified.
The beneficial effects of the invention are as follows: the breathing tube with the connector realizes localization, solves the quality detection problem of the breathing tube and the connector, and provides a life support for divers. Meanwhile, the problems of high price and time and labor consumption of purchasing foreign respiratory tubes and connectors are solved, and compared with foreign products, the respiratory tubes and connectors are low in price and greatly reduced under the condition of no quality difference, can be supplied at any time, and meet the requirements of customers.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of structure G of FIG. 1;
FIG. 3 is a schematic diagram of six interfaces according to the present invention;
fig. 4 is an exploded view of the structure of the present invention.
Detailed Description
As shown in fig. 1 to 4, the detecting device for the underwater breathing tube joint comprises a threaded clamp i 7, a conical surface joint i 8, a compression joint i 9, a breathing tube 10 to be detected, a threaded clamp ii 15, a conical surface joint ii 16, a compression joint ii 17, a pressing tube 26 of an air compressor, a bracket 1, a welding joint 2, a clamping plate i 3, a clamping plate ii 4, a clamping plate i 5, a clamping plate ii 6, a clamping plate iii 11, a clamping plate iv 12, a clamping plate iii 13, a clamping plate iv 14, a key 18, a clamping plate v 19, a clamping plate vi 20, a clamping plate v 21, a clamping plate vi 22, a threaded clamp iii 23, a conical surface joint iii 24, a compression joint iii 25, a wire alignment joint 27, a double-ended screw 28, a hanging ring 29, a UCP bearing 30, a shaft 31, a hanging hook 32, a counterweight 33, a large sprocket 34, a large wheel chain 35, a small wheel chain 37 and a small sprocket 36.
The middle hole at the upper end of the thread clamp I7 is sleeved into the bottom end of the conical surface joint I8 and is contracted by a contraction machine to form an interface A, the compression joint I9 is sleeved into the upper end of the conical surface joint I8, and a port I10-1 of the breathing tube 10 is inserted between the compression joint I9 and the conical surface joint I8 and is contracted by the contraction machine to form an interface B.
The middle hole at the upper end of the thread clamp II 15 is sleeved into the bottom end of the conical surface joint II 16 and is contracted by a contraction machine to form an interface C, the compression joint II 17 is sleeved into the upper end of the conical surface joint II 16, and the other port II 10-2 of the breathing tube 10 is inserted between the compression joint II 17 and the conical surface joint II 16 and is contracted by the contraction machine to form an interface D.
A UCP bearing 30 is symmetrically fixed on two beams at the upper end of the bracket 1, a large chain wheel 34 and a small chain wheel 36 are respectively fixed on a shaft 31, two ends of the shaft 31 are respectively arranged in the two UCP bearings 30, one end of a small wheel chain 37 is meshed with the small chain wheel 36 and fixed on the small chain wheel 36 through a key 18, the other end of the small wheel chain 37 is connected with one end of a lifting hook 32, one end of a large wheel chain 35 is meshed with the large chain wheel 34 and fixed on the large chain wheel 34 through the key 18, the other end of the large wheel chain 35 is connected with a counterweight 33, and the lower end of a welded joint 2 is welded on the beam in the middle of the lower end of the bracket 1.
The middle hole at the upper end of the thread clamp III 23 is sleeved into the bottom end of the conical surface joint III 24 and is contracted by a contraction machine to form an interface E, the compression joint III 25 is sleeved into the upper end of the conical surface joint III 24, and the compression pipe 26 of the air compressor is inserted between the compression joint III 25 and the conical surface joint III 24 and is contracted by the contraction machine to form an interface F.
The clamp plate V21 and the clamp plate VI 22 are in butt joint, a round hole formed by a semicircular hole in the middle of the clamp plate V21 and a semicircular hole in the middle of the clamp plate VI 22 after butt joint is sleeved on the interface E, a clamp plate V19 and a clamp plate VI 20 are respectively clamped on the two sides of the clamp plate V21 and the clamp plate VI 22 after butt joint, two hanging rings 29 are respectively inserted into the round holes on the two sides of the clamp plate V21 and the clamp plate VI 22 after butt joint and Kong-1 in the clamp plate V19 and Kong-1 in the clamp plate VI 20 in sequence and are connected with nuts, and the clamp plate V21 and the clamp plate VI 22 are fixed on the clamp plate V19 and the clamp plate VI 20.
The other end of the lifting hook 32 is respectively hooked with the two lifting rings 29, and one end of the wire pair connector 27 is screwed with the thread clamp III 23.
The butt joint of the clamp plate I5 and the clamp plate II 6 is carried out, a round hole formed by a semicircular hole in the middle of the clamp plate I5 and a semicircular hole in the middle of the clamp plate II 6 after butt joint is sleeved on the interface A of the breathing tube 10, a clamp plate II 4 and a clamp plate I5 are respectively clamped below two sides of the clamp plate I5 and the clamp plate II 6 after butt joint, the lower ends of two double-headed screws 28 are respectively inserted into the round holes in the two sides of the clamp plate I5 and the clamp plate II 6 after butt joint and the middle holes I3-1 of the clamp plate II 4 and the middle holes II 4-1 of the clamp plate I5 in sequence, and the clamp plate I5 and the clamp plate II 6 are fixed on the clamp plate I3 and the clamp plate II 4 through nuts.
The clamp plate III 13 and the clamp plate IV 14 are in butt joint, a round hole formed by a semicircular hole in the middle of the clamp plate III 13 and a semicircular hole in the middle of the clamp plate IV 14 after butt joint is sleeved on an interface C of the breathing tube 10, a clamp plate III 11 and a clamp plate IV 12 are respectively clamped below two sides of the clamp plate III 13 and the clamp plate IV 14 after butt joint, the upper ends of two double-headed screws 28 are respectively inserted into the round holes in the two sides of the clamp plate III 13 and the clamp plate IV 14 after butt joint and Kong-1 in a hole III 11-1 in the clamp plate III 11 and a hole Kong-1 in the clamp plate IV 12 in sequence, and the clamp plate III 13 and the clamp plate IV 14 are fixed on the clamp plate III 11 and the clamp plate IV 12 through nuts.
The upper end of the welding joint 2 is screwed with the middle hole at the bottom end of the thread clamp I7, and the other end of the butt-joint 27 is screwed with the thread clamp II 15.
The application method of the detection device of the underwater breathing tube joint comprises the following steps:
the first step, dock splint I5, splint II 6, the semicircle orifice in the middle of splint I5 behind the butt joint and the semicircle orifice in the middle of splint II 6 constitute the round hole cover on breathing tube 10's interface A, behind butt joint splint I5 and splint II 6 both sides below, a block of cardboard II 4 and a block of splint I5 of cartridge respectively, two double-end screw 28 lower extreme inserts respectively in proper order behind butt joint splint I5 and splint II 6 both sides round hole and cardboard II 4 mesopore I3-1 and a splint I5 mesopore II 4-1, fix splint I5 and splint II 6 on cardboard I3 and cardboard II 4 through the nut, with welded joint 2 upper end and screw clamp I7 bottom mesopore spiro union together.
The clamp plate III 13 and the clamp plate IV 14 are butted, round holes formed by a semicircular hole in the middle of the clamp plate III 13 and a semicircular hole in the middle of the clamp plate IV 14 are sleeved on an interface C of the breathing tube 10 after butt joint, a clamp plate III 11 and a clamp plate IV 12 are respectively clamped below two sides of the clamp plate III 13 and the clamp plate IV 14 after butt joint, the upper ends of two double-headed screws 28 are respectively inserted into the round holes on two sides of the clamp plate III 13 and the clamp plate IV 14 after butt joint and Kong-1 in the holes III 11-1 and the clamp plate IV 12 in the clamp plate III 11 and the clamp plate IV 12 in sequence, the clamp plate III 13 and the clamp plate IV 14 are fixed on the clamp plate III 11 and the clamp plate IV 12 through nuts, the upper ends of the welding joint 2 are screwed together with the middle holes at the bottom ends of the threaded clamp I7,
the other end of the butt joint 27 is screwed with the thread clamp II 15.
And secondly, determining a counterweight, wherein the counterweight 33 is determined according to the conversion of the stress requirement of the detected interface, and is calculated according to the formula g=t× (Z1/Z2), G is the weight of the counterweight, T is the stress required by the detected interface, Z1 is the number of teeth of the small sprocket 36, Z2 is the number of teeth of the large sprocket 34, and the counterweight 33 has the function of providing a fixed force for the detected interface.
The tested joint of the counterweight 33 of this embodiment requires a force T of at least 90kg, the small sprocket 36 has a number Z1 of 40 teeth, the large sprocket 34 has a number Z2 of 120 teeth,
taking the formula g=90× (40/120) to be a conversion, g=90×1/3=30 kg, and the weight of the counterweight 33 is 30kg.
Thirdly, starting an air compressor, injecting compressed air into the breathing tube 10 to be detected of tens or hundreds of meters through a pressurizing pipe 26 and a wire connector 27 of the air compressor, wherein the pressure of the air is generally according to the requirements of customers, such as 20bar, 30bar, and the interval is between 0 and 250bar, closing a valve on the pressurizing pipe 26, observing whether the air pressure of a pressure gauge connected with the pressurizing pipe 26 changes or not after fifteen minutes to thirty minutes, and if the air pressure of the pressure gauge does not change, indicating that no air leakage occurs at an interface A or an interface B or an interface C or an interface D connected with the breathing tube 10 to be detected of tens or hundreds of meters, and indicating that the detected breathing tube 10 is qualified;
if the pressure gauge is low, the interface A or B or C or D connected with the breathing tube 10 to be detected of tens or hundreds of meters is air leakage, and then further checking
Whether the air leakage is not received by the interface A formed by the shrinkage of the necking machine after the middle hole at the upper end of the thread clamp I7 of the breathing tube 10 is sleeved at the bottom end of the conical connector I8 or whether the air leakage is not received by the interface B formed by the shrinkage of the necking machine after the port I10-1 of the breathing tube 10 is inserted between the compression connector I9 and the conical connector I8, or whether the air leakage is not received by the interface C formed by the shrinkage of the necking machine after the middle hole at the upper end of the thread clamp II 15 is sleeved at the bottom end of the conical connector II 16, or whether the air leakage is not received by the interface C formed by the shrinkage of the necking machine after the other port II 10-2 of the breathing tube 10 is inserted between the compression connector II 17 and the conical connector II 16, and whether the air leakage is not received by the interface D formed by the shrinkage of the necking machine is detected, and the detected breathing tube 10 is unqualified.
The determination of the T stress amount can be determined according to the requirements of users or according to the requirements of 90kg of national specifications.
Claims (2)
1. The utility model provides a detection device of breathing tube joint under water, includes screw clamp I (7), conical surface joint I (8), compression joint I (9), breathing tube (10) that are detected, screw clamp II (15), conical surface joint II (16), compression joint II (17), air compressor's the tube (26) that presses, screw clamp I (7) upper end mesopore embolias conical surface joint I (8) bottom and constitutes interface A through the necking down machine throat, compression joint I (9) embolias conical surface joint I (8) upper end, breathing tube (10) one port I (10-1) inserts between compression joint I (9) and conical surface joint I (8) and constitutes interface B through the necking down machine throat; the middle hole at the upper end of the thread clamp II (15) is sleeved into the bottom end of the conical surface joint II (16) and forms an interface C through a necking machine, the compression joint II (17) is sleeved into the upper end of the conical surface joint II (16), and the other port II (10-2) of the breathing tube (10) is inserted between the compression joint II (17) and the conical surface joint II (16) and forms an interface D through a necking machine; the method is characterized in that: the novel welding device is characterized by further comprising a bracket (1), a welding joint (2), a clamping plate I (3), a clamping plate II (4), a clamping plate I (5), a clamping plate II (6), a clamping plate III (11), a clamping plate IV (12), a clamping plate III (13), a clamping plate IV (14), a key (18), a clamping plate V (19), a clamping plate VI (20), a clamping plate V (21), a clamping plate VI (22), a threaded clamp III (23), a conical surface joint III (24), a compression joint III (25), a wire butt joint (27), a double-end screw (28), a lifting ring (29), a UCP bearing (30), a shaft (31), a lifting hook (32), a counterweight (33), a large chain wheel (34), a large chain wheel (35), a small chain wheel (37) and a small chain wheel (36);
a UCP bearing (30) is symmetrically fixed on two beams at the upper end of the bracket (1), a large chain wheel (34) and a small chain wheel (36) are respectively fixed on the shaft (31), two ends of the shaft (31) are respectively arranged in the two UCP bearings (30), one end of a small wheel chain (37) is meshed with the small chain wheel (36) in a tooth manner and is fixed on the small chain wheel (36) through a key (18), the other end of the small wheel chain (37) is connected with one end of a lifting hook (32), one end of a large wheel chain (35) is meshed with the large chain wheel (34) in a tooth manner and is fixed on the large chain wheel (34) through the key (18), the other end of the large wheel chain (35) is connected with a counterweight (33), and the lower end of the welding joint (2) is fixed on the beam in the middle of the lower end of the bracket (1);
the middle hole at the upper end of the thread clamp III (23) is sleeved into the bottom end of the conical surface joint III (24) and forms an interface E through necking of a necking machine, the compression joint III (25) is sleeved into the upper end of the conical surface joint III (24), and a pressing pipe (26) of an air compressor is inserted between the compression joint III (25) and the conical surface joint III (24) and forms an interface F through necking of the necking machine;
the clamping plate V (21) and the clamping plate VI (22) are in butt joint, a round hole formed by a semicircular hole in the middle of the clamping plate V (21) and a semicircular hole in the middle of the clamping plate VI (22) after butt joint is sleeved on the interface E, a clamping plate V (19) and a clamping plate VI (20) are respectively clamped on the upper surfaces of two sides of the clamping plate V (21) and the clamping plate VI (22), two lifting rings (29) are respectively inserted into the round holes in the two sides of the clamping plate V (21) and the clamping plate VI (22) after butt joint and Kong (19-1) in the clamping plate V (19) and Kong (20-1) in the clamping plate VI (20) in sequence, and the clamping plate V (21) and the clamping plate VI (22) are fixed on the clamping plate V (19) and the clamping plate VI (20);
the other end of the lifting hook (32) is respectively hooked with two lifting rings (29), and one end of the wire-pair connector (27) is screwed with the thread clamp III (23);
the two clamping plates I (5) and II (6) are in butt joint, a round hole formed by a semicircular hole in the middle of the clamping plate I (5) and a semicircular hole in the middle of the clamping plate II (6) is sleeved on an interface A of the breathing tube (10), a clamping plate II (4) and a clamping plate I (3) are respectively clamped below two sides of the clamping plate I (5) and the clamping plate II (6) after butt joint, the lower ends of two double-headed screws (28) are respectively inserted into the round holes in the two sides of the clamping plate I (5) and the clamping plate II (6) after butt joint and the holes II (4-1) in the clamping plate II (4) and the holes I (3-1) in the clamping plate I (3), and the clamping plate I (5) and the clamping plate II (6) are fixed on the clamping plate I (3) and the clamping plate II (4) through nuts;
the clamp plate III (13) and the clamp plate IV (14) are in butt joint, a semicircular hole in the middle of the clamp plate III (13) and a semicircular hole in the middle of the clamp plate IV (14) are sleeved on an interface C of the breathing tube (10), a clamp plate III (11) and a clamp plate IV (12) are respectively clamped below two sides of the clamp plate III (13) and the clamp plate IV (14) after butt joint, the upper ends of two double-headed screws (28) are respectively inserted into the circular holes in the two sides of the clamp plate III (13) and the clamp plate IV (14) after butt joint and Kong (12-1) in the holes III (11-1) and the clamp plate IV (12) of the clamp plate III (11), and the clamp plate IV (14) are fixed on the clamp plate III (11) and the clamp plate IV (12) through nuts;
the upper end of the welding joint (2) is in threaded connection with the middle hole at the bottom end of the thread clamp I (7), and the other end of the opposite thread joint (27) is in threaded connection with the thread clamp II (15).
2. A method of using the underwater breathing tube joint detection device of claim 1, comprising the steps of:
firstly, butt-jointing a clamp plate I (5) and a clamp plate II (6), sleeving a round hole formed by a semicircular hole in the middle of the clamp plate I (5) and a semicircular hole in the middle of the clamp plate II (6) on an interface A of a breathing tube (10), respectively clamping a clamp plate II (4) and a clamp plate I (3) below two sides of the clamp plate I (5) and the clamp plate II (6) after butt joint, sequentially inserting the lower ends of two double-headed screws (28) into the round holes in the two sides of the clamp plate I (5) and the clamp plate II (6) and the middle hole II (4-1) in the clamp plate II (4) and the middle hole I (3-1) in the clamp plate I (3), fixing the clamp plate I (5) and the clamp plate II (6) on the clamp plate I (3) and the clamp plate II (4) through nuts, and screwing the upper ends of a welded joint (2) and the middle hole in the bottom end of a threaded clamp block I (7) together; the clamp plate III (13) and the clamp plate IV (14) are in butt joint, a semicircular hole in the middle of the clamp plate III (13) and a semicircular hole in the middle of the clamp plate IV (14) are sleeved on an interface C of the breathing tube (10), a clamp plate III (11) and a clamp plate IV (12) are respectively clamped below two sides of the clamp plate III (13) and the clamp plate IV (14) after butt joint, the upper ends of two double-headed screws (28) are respectively inserted into the circular holes in the two sides of the clamp plate III (13) and the clamp plate IV (14) after butt joint and Kong (12-1) in the holes III (11-1) and the clamp plate IV (12) of the clamp plate III (11), the clamp plate III (13) and the clamp plate IV (14) are fixed on the clamp plate III (11) and the clamp plate IV (12) through nuts, and the other end of the butt joint screw (27) is screwed with the threaded clamp II (15);
secondly, determining a counterweight, wherein the counterweight (33) is determined according to the stress requirement conversion of the detected joint, and is calculated according to the formula g=t× (Z1/Z2), G is the weight of the counterweight, T is the stress required by the detected joint, Z1 is the number of teeth of the small chain wheel (36), Z2 is the number of teeth of the large chain wheel (34), and the counterweight (33) has a fixed force on the detected joint;
starting an air compressor, injecting compressed air into the breathing tube (10) which is detected by tens or hundreds of meters through a pressing tube (26) and a wire butt joint (27) of the air compressor in sequence, closing a valve on the pressing tube (26), and observing whether the air pressure of a pressure gauge connected with the pressing tube (26) changes or not after fifteen to thirty minutes, wherein if the air pressure of the pressure gauge does not change, no air leakage occurs at an interface A or an interface B or an interface C or an interface D which are connected with the breathing tube (10) which is detected by tens or hundreds of meters, so that the detected breathing tube (10) is qualified; if the air pressure of the pressure gauge is reduced, the air leakage occurs at an interface A or an interface B or an interface C or an interface D connected with the detected breathing tube (10) with tens or hundreds of meters, then the air leakage is further checked whether the air leakage is not received at the interface A formed by the necking of the necking machine after the middle hole at the upper end of the thread clamp I (7) of the breathing tube (10) is sleeved at the bottom end of the conical connector I (8), or whether the air leakage is not received at the interface B formed by the necking of the necking machine after the port I (10-1) of the breathing tube (10) is inserted between the compression connector I (9) and the conical connector I (8), or whether the air leakage is not received at the interface C formed by the necking of the thread clamp II (15) is sleeved at the bottom end of the conical connector II (16), or whether the air leakage is not received at the interface D formed by the necking of the necking machine after the other port II (10-2) of the breathing tube (10) is inserted between the compression connector II (17) and the conical connector II (16), and the detected air leakage is not qualified.
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