Capillary stainless steel tube underwater testing device

Abstract

The utility model relates to a capillary stainless steel tube underwater testing device which comprises a base, a testing pool is arranged on the base, a testing mechanism is arranged on the base, the testing mechanism comprises a testing supporting frame, a lifting frame, a first clamping plate, a second clamping plate, a first clamping tube and a second clamping tube, the testing supporting frame is arranged on the base and stretches across the testing pool, and the lifting frame is arranged on the testing pool. The lifting frame is arranged on the base in a longitudinal sliding mode and is in transmission connection with a first driving source arranged on the test supporting frame, the first clamping plate and the second clamping plate are arranged on the lifting frame in a transverse sliding mode and are respectively in transmission connection with a second driving source and a third driving source arranged on the lifting frame, and the first clamping pipe is fixedly connected to the first clamping plate; the second clamping pipe is fixedly connected to the second clamping plate and is opposite to the first clamping pipe, and an air pressure sensor is connected into the second clamping pipe. The underwater testing device for the capillary stainless steel tube can more accurately test the sealing performance of the capillary stainless steel tube, and the testing operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe production equipment, in particular to an underwater testing device for capillary stainless steel pipes. Background Art

[0002] Capillary stainless steel tubes are mainly used as signal tubes for automation instruments, wire protection tubes for automation instruments, etc. to protect the lines. Therefore, sealing is a very important performance indicator of capillary stainless steel tubes. After the capillary stainless steel tubes are formed, they need to be tested underwater. The capillary stainless steel tubes are placed in a test pool filled with water, and high-pressure gas is injected into the capillary stainless steel tubes. The sealing of the capillary stainless steel tubes is detected by observing the bubbles in the test pool. However, due to the small diameter of the capillary stainless steel tubes, the bubbles generated during underwater testing are also small and difficult to observe, which leads to misjudgment during underwater testing and affects the accuracy of the underwater test.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides an underwater testing device for a capillary stainless steel tube, which solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A capillary stainless steel tube underwater testing device includes a base, a test pool is provided on the base, and a testing mechanism is provided on the base. The testing mechanism includes a test support frame, a lifting frame, a first clamping plate, a second clamping plate, a first clamping tube and a second clamping tube. The test support frame is provided on the base and spans above the test pool. The lifting frame can be longitudinally slidably provided on the base and is transmission-connected to a first driving source provided on the test support frame. The first clamping plate and the second clamping plate can be transversely slidably provided on the lifting frame and are transmission-connected to a second driving source and a third driving source provided on the lifting frame respectively. The first clamping tube is fixedly connected to the first clamping plate. The second clamping tube is fixedly connected to the second clamping plate and is opposite to the first clamping tube. An air pressure sensor is connected inside the second clamping tube.

[0007] Preferably, the lifting frame is fixedly connected to a plurality of first guide rods that are upright and pass through the test support frame, the first driving source is a first cylinder, and the output shaft of the first cylinder passes downward through the test support frame and is fixedly connected to the lifting frame.

[0008] Preferably, a plurality of transverse second guide rods are fixedly connected to the lifting frame, the first clamping plate and the second clamping plate are passed through the second guide rods, the second driving source and the third driving source are respectively the first motor and the second motor, and the lifting frame is rotatably provided with a first transmission screw and a second transmission screw respectively screwed on the first clamping plate and the second clamping plate, and the first transmission screw and the second transmission screw are respectively connected to the output shafts of the first motor and the second motor.

[0009] Preferably, the first and second clamping tubes are formed with a first plug-in portion and a second plug-in portion at opposite ends thereof, and the first and second plug-in portions are sleeved with a first sealing sleeve and a second sealing sleeve respectively.

[0010] Preferably, a feeding mechanism is also provided on the base, and the feeding mechanism includes a feeding support frame and a feeding plate. The feeding support frame is provided on the base on one side of the test pool, and the feeding plate can be horizontally slidably provided on the feeding support frame and is transmission-connected to the fourth driving source provided on the feeding support frame, and a feeding trough is formed at the end of the feeding plate close to the test pool.

[0011] Preferably, the feeding plate is placed on the feeding support frame and a limiting plate is fixedly connected to the lower surface of the feeding plate. Several horizontal third guide rods are fixedly connected to the limiting plate and pass through the feeding support frame. The fourth driving source is a second cylinder, and the output shaft of the second cylinder passes horizontally through the feeding support frame and is fixedly connected to the limiting plate.

[0012] Preferably, the feeding support frame is provided with a limiting slide groove located below the feeding plate and along the moving direction of the feeding plate, and a limiting rod located in the limiting slide groove is fixedly connected to the lower surface of the feeding plate.

[0013] Preferably, the base is provided with a material rack spanning above the feeding support rack, and two material guide racks are symmetrically provided on the material rack, an inclined first material guide channel and a vertical second material guide channel are formed in the material guide rack, the first material guide channel and the second material guide channel are connected to each other and are open on the inner side, an adjustment slot is provided on the material rack, a bolt pair provided on the material guide rack is connected to the adjustment slot to realize the connection between the material guide rack and the material rack, so that the higher end of the first material guide channel is connected to the material loading plane of the material rack, and the port of the second material guide channel can be aligned with the material slot.

[0014] In summary, the beneficial effect of the present invention is that by observing the bubbles in combination with the changes in the air pressure in the capillary stainless steel tube obtained by the air pressure sensor, the sealing of the capillary stainless steel tube can be tested more accurately, and the test operation is very convenient, and the capillary stainless steel tube only needs to be placed between the first clamping tube and the second clamping tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the utility model from another perspective;

[0018] Figure 3 It is a structural diagram of the testing mechanism in the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first connecting pipe and the second pipe clamping the steel pipe in the present invention;

[0020] Figure 5 This is a schematic structural diagram of the feeding mechanism in the present utility model;

[0021] Figure 6 It is a structural schematic diagram of the central material rack and the material guide rack of the utility model.

[0022] In the figure: 1, base; 2, test pool; 3, test mechanism; 31, test support frame; 311, first cylinder; 32, lifting frame; 321, first guide rod; 322, second guide rod; 323, first motor; 324, second motor; 325, first transmission screw; 326, second transmission screw; 33, first clamping plate; 34, second clamping plate; 35, first clamping tube; 351, first plug-in portion; 352, first sealing sleeve; 36, Second clamping tube; 361, second plug-in part; 362, second sealing sleeve; 37, air pressure sensor; 4, feeding mechanism; 41, feeding support frame; 411, second cylinder; 412, limiting slide; 42, feeding plate; 421, material loading trough; 422, limiting plate; 423, third guide rod; 424, limiting rod; 51, material loading rack; 511, adjusting slot; 52, material guide rack; 521, first material guiding channel; 522, second material guiding channel. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figure 1-6, clearly and completely describes 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] As shown in the figure, a capillary stainless steel tube underwater testing device includes a base 1, a test pool 2 is provided on the base 1, and a testing mechanism 3 is provided on the base 1. The testing mechanism includes a test support frame 31, a lifting frame 32, a first clamping plate 33, a second clamping plate 34, a first clamping tube 35 and a second clamping tube 36. The test support frame 31 is provided on the base 1 and spans above the test pool 2. The lifting frame 32 can be longitudinally slidably provided on the base 1 and is transmission-connected to the first driving source provided on the test support frame 31. The first clamping plate 33 and the second clamping plate 34 can be transversely slidably provided on the lifting frame 32 and are transmission-connected to the second driving source and the third driving source provided on the lifting frame 32 respectively. The first clamping tube 35 is fixedly connected to the first clamping plate 33, and the second clamping tube 36 is fixedly connected to the second clamping plate 34 and is opposite to the first clamping tube 35. An air pressure sensor 37 is connected to the second clamping tube 36.

[0025] Specifically, the lifting frame 32 is slidably arranged on the test support frame 31: the lifting frame 32 is fixedly connected to a plurality of first guide rods 321 that are upright and pass through the test support frame 31, the first driving source is the first cylinder 311, and the output shaft of the first cylinder 311 passes downward through the test support frame 31 and is fixedly connected to the lifting frame 32.

[0026] Specifically, the first clamping plate 33 and the second clamping plate 34 are slidably arranged on the lifting frame 32: a plurality of transverse second guide rods 322 are fixedly connected to the lifting frame 32, the first clamping plate 33 and the second clamping plate 34 are passed through the second guide rods 322, the second driving source and the third driving source are respectively the first motor 323 and the second motor 324, and the lifting frame 32 is rotatably provided with a first transmission screw 325 and a second transmission screw 326 respectively screwed on the first clamping plate 33 and the second clamping plate 34, and the first transmission screw 325 and the second transmission screw 326 are respectively connected to the output shafts of the first motor 323 and the second motor 324.

[0027] Through the above structure, the first clamping tube 35 is connected to the external air supply equipment, and the air pressure sensor 37 is connected to the external monitoring equipment. The air supply equipment and the monitoring equipment belong to the existing technology and are not described in detail here. When the capillary stainless steel tube is tested underwater, the capillary stainless steel tube is placed between the first clamping tube 35 and the second clamping tube 36. The first motor 323 and the second motor 324 respectively drive the first transmission screw 325 and the second transmission screw 326 to rotate. The first transmission screw 325 and the second transmission screw 326 respectively drive the first clamping plate 33 and the second clamping plate 34 to slide toward each other on the second guide rod 322 through screw connection with the first clamping plate 33 and the second clamping plate 34, thereby driving the first clamping tube 35 and the second clamping tube 36 to move toward each other and respectively press against the two ends of the capillary stainless steel tube to press against the capillary stainless steel tube. Both ends of the steel pipe are sealed, and then the first cylinder 311 drives the lifting frame 32 to move downward, driving the capillary stainless steel pipe to move downward into the water of the test pool 2. The air supply equipment injects high-pressure air into the capillary stainless steel pipe through the first clamping tube 35. The air leakage of the gas in the capillary stainless steel pipe is judged by observing the bubble situation in the test pool 2 and the change of the air pressure value in the capillary stainless steel pipe measured by the air pressure sensor 37 on the monitoring equipment, thereby judging the sealing performance of the capillary stainless steel pipe. It can be seen that this underwater testing device for capillary stainless steel pipe can test the sealing performance of the capillary stainless steel pipe more accurately by observing the bubbles and the change of the air pressure in the capillary stainless steel pipe, and the operation during the test is very convenient. It is only necessary to place the capillary stainless steel pipe between the first clamping tube 35 and the second clamping tube 36.

[0028] In addition, the opposite ends of the first clamping tube 35 and the second clamping tube 36 are respectively formed with a first plug-in portion 351 and a second plug-in portion 361, and the first plug-in portion 351 and the second plug-in portion 361 are respectively sleeved with a first sealing sleeve 352 and a second sealing sleeve 362. When the first clamping tube 35 and the second clamping tube 36 are tightly pressed against the two ends of the capillary stainless steel tube, the first plug-in portion 351 and the second plug-in portion 361 are inserted into the capillary stainless steel tube. Through the action of the first plug-in portion 351 and the secondary plug-in portion, the stability of the first clamping tube 35 and the second clamping tube 36 when clamping the capillary stainless steel tube is enhanced, and through the action of the first sealing sleeve 352 and the second sealing sleeve 362, the sealing between the first clamping tube 35 and the second clamping tube 36 and the capillary stainless steel tube is enhanced, thereby ensuring the accuracy of the test results.

[0029] Furthermore, a feeding mechanism 4 is also provided on the base 1, and the feeding mechanism 4 includes a feeding support frame 41 and a feeding plate 42. The feeding support frame 41 is arranged on the base 1 on one side of the test pool 2, and the feeding plate 42 can be horizontally slidably arranged on the feeding support frame 41 and is transmission-connected to the fourth driving source arranged on the feeding support frame 41, and a feeding trough 421 is formed at the end of the feeding plate 42 near the test pool 2.

[0030] Specifically, the feeding plate 42 is slidably arranged on the feeding support frame 41: the feeding plate 42 is placed on the feeding support frame 41 and a limiting plate 422 is fixedly connected to the lower surface of the feeding plate 42, and several horizontal third guide rods 423 are fixedly connected to the limiting plate 422 and pass through the feeding support frame 41. The fourth driving source is the second cylinder 411, and the output shaft of the second cylinder 411 horizontally passes through the feeding support frame 41 and is fixedly connected to the limiting plate 422.

[0031] Through the above structure, the capillary stainless steel tube to be tested is placed in the feeding trough 421, and the second cylinder 411 drives the feeding plate 42 to move toward the testing mechanism 3, so that the capillary stainless steel tube moves between the first clamping tube 35 and the second clamping tube 36, which facilitates the operation of feeding the capillary stainless steel tube between the first clamping tube 35 and the second clamping tube 36 during testing, and also ensures that the capillary stainless steel tube can be accurately located between the first clamping tube 35 and the second clamping tube 36 and aligned with the two.

[0032] In addition, the feeding support frame 41 is provided with a limiting slide groove 412 located below the feeding plate 42 along the moving direction of the feeding plate 42, and a limiting rod 424 located in the limiting slide groove 412 is fixedly connected to the lower surface of the feeding plate 42. When the limiting rod 424 moves with the feeding plate 42 to the end of the limiting slide groove 412, the capillary stainless steel tube in the feeding trough 421 moves to and is aligned between the first clamping tube 35 and the second clamping tube 36. The limiting rod 424 and the limiting slide groove 412 limit the stroke of the feeding plate 42, thereby further ensuring the accuracy of feeding the capillary stainless steel tube between the first clamping tube 35 and the second clamping tube 36.

[0033] Furthermore, the base 1 is provided with a material rack 51 spanning above the feeding support rack 41, and two material guide racks 52 are symmetrically provided on the material rack 51, and an inclined first material guide channel 521 and a vertical second material guide channel 522 are formed in the material guide rack 52. The first material guide channel 521 and the second material guide channel 522 are connected to each other and are open on the inner side. An adjustment slot 511 is provided on the material rack 51, and a bolt pair provided on the material guide rack 52 is connected to the adjustment slot 511 to realize the connection between the material guide rack 52 and the material rack 51, so that the higher end of the first material guide channel 521 is connected to the material loading plane of the material rack 51, and the end of the second material guide channel 522 can be aligned with the material loading slot 421.

[0034] Through the above structure, when the feeding plate 42 is driven by the second cylinder 411 to move to the position where the limit plate 422 and the feeding support frame 41 are against each other, the material trough 421 is aligned with the end of the second guide channel 522. At this time, the capillary stainless steel tubes placed in batches on the material rack 51 are arranged in the first guide channel 521 and the second guide channel 522 after passing through the first guide channel 521 and the second guide channel 522. The capillary stainless steel tube at the bottom falls into the material trough 421 through the end of the second guide channel 522. In the process of the feeding plate 42 feeding the capillary stainless steel tube in the material trough 421 to between the first clamping tube 35 and the second clamping tube 36, the feeding plate 42 supports the capillary stainless steel tube in the second channel. The stainless steel tube is fed into the first and second channels, and the capillary stainless steel tube is kept in the first channel and the second channel. When the feeding plate 42 completes the feeding operation of the capillary stainless steel tube in the feeding trough 421 and is reset, the capillary stainless steel tube at the bottom of the second channel falls into the feeding trough 421 through the port of the second channel, so that the feeding plate 42 can continuously feed the capillary stainless steel tube between the first clamping tube 35 and the second clamping tube 36, thereby further facilitating the operation during testing. In addition, by loosening the bolt pair to make the two guide racks 52 slide along the adjustment slot 511 on the feeding rack 51, the distance between the two guide racks 52 can be adjusted to adapt to the testing of capillary stainless steel tubes of different lengths, which has better applicability.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A capillary stainless steel tube underwater testing device, comprising a base (1), wherein a test pool (2) is provided on the base (1), and characterized in that: The base (1) is provided with a test mechanism (3), which includes a test support frame (31), a lifting frame (32), a first clamping plate (33), a second clamping plate (34), a first clamping tube (35) and a second clamping tube (36). The test support frame (31) is provided on the base (1) and spans above the test pool (2). The lifting frame (32) can be longitudinally slidably provided on the base (1) and is transmission-connected to a first driving source provided on the test support frame (31). The first clamping plate (33) and the second clamping plate (34) can be transversely slidably provided on the lifting frame (32) and are transmission-connected to a second driving source and a third driving source provided on the lifting frame (32), respectively. The first clamping tube (35) is fixedly connected to the first clamping plate (33). The second clamping tube (36) is fixedly connected to the second clamping plate (34) and is opposite to the first clamping tube (35). An air pressure sensor (37) is connected inside the second clamping tube (36).

2. The capillary stainless steel tube underwater testing device according to claim 1, characterized in that: A plurality of first guide rods (321) are fixedly connected to the lifting frame (32) and are erected and passed through the test support frame (31). The first driving source is a first cylinder (311). The output shaft of the first cylinder (311) passes downward through the test support frame (31) and is fixedly connected to the lifting frame (32).

3. The capillary stainless steel tube underwater testing device according to claim 2, characterized in that: A plurality of transverse second guide rods (322) are fixedly connected to the lifting frame (32); the first clamping plate (33) and the second clamping plate (34) are passed through the second guide rods (322); the second driving source and the third driving source are respectively a first motor (323) and a second motor (324); a first transmission screw rod (325) and a second transmission screw rod (326) are rotatably provided on the lifting frame (32) and are respectively screwed to the first clamping plate (33) and the second clamping plate (34); the first transmission screw rod (325) and the second transmission screw rod (326) are respectively connected to the output shafts of the first motor (323) and the second motor (324).

4. The capillary stainless steel tube underwater testing device according to claim 3, characterized in that: A first plug-in portion (351) and a second plug-in portion (361) are formed at opposite ends of the first clamping tube (35) and the second clamping tube (36), respectively. A first sealing sleeve (352) and a second sealing sleeve (362) are sleeved on the first plug-in portion (351) and the second plug-in portion (361), respectively.

5. The capillary stainless steel tube underwater testing device according to claim 1, characterized in that: A feeding mechanism (4) is further provided on the base (1), the feeding mechanism (4) comprising a feeding support frame (41) and a feeding plate (42), the feeding support frame (41) being provided on the base (1) and being located on one side of the test pool (2), the feeding plate (42) being horizontally slidably provided on the feeding support frame (41) and being transmission-connected to a fourth driving source provided on the feeding support frame (41), and a feeding trough (421) being formed at an end of the feeding plate (42) close to the test pool (2).

6. The capillary stainless steel tube underwater testing device according to claim 5, characterized in that: The feeding plate (42) is placed on the feeding support frame (41) and a limiting plate (422) is fixedly connected to the lower surface of the feeding plate (42). A plurality of horizontal third guide rods (423) are fixedly connected to the limiting plate (422) and pass through the feeding support frame (41). The fourth driving source is a second cylinder (411). The output shaft of the second cylinder (411) passes horizontally through the feeding support frame (41) and is fixedly connected to the limiting plate (422).

7. The capillary stainless steel tube underwater testing device according to claim 6, characterized in that: The feeding support frame (41) is provided with a limiting slide groove (412) located below the feeding plate (42) and along the moving direction of the feeding plate (42), and a limiting rod (424) located in the limiting slide groove (412) is fixedly connected to the lower surface of the feeding plate (42).

8. The capillary stainless steel tube underwater testing device according to claim 7, characterized in that: The base (1) is provided with a material rack (51) spanning above the feeding support rack (41), and two material guide racks (52) are symmetrically provided on the material rack (51), and an inclined first material guide channel (521) and a vertical second material guide channel (522) are formed in the material guide rack (52), and the first material guide channel (521) and the second material guide channel (522) are communicated with each other and are open toward the inside. An adjustment groove (511) is provided on the material rack (51), and a bolt pair provided on the material guide rack (52) is connected to the adjustment groove (511) to realize the connection between the material guide rack (52) and the material rack (51), so that the higher end of the first material guide channel (521) is connected to the material loading plane of the material rack (51), and the end of the second material guide channel (522) can be aligned with the material loading groove (421).

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