Metal hose test device for cryogenic liquid filling

Abstract

The utility model relates to test equipment technical field discloses metal hose testing arrangement for low temperature liquid filling, including water storage tank, recovery groove, support frame and air heater, the upper side fixed mounting of support frame has workstation, both ends of workstation all are installed with adjusting disc, and the top of workstation is opened with the through -groove for exposing adjusting disc, and the side of mutual close of adjusting disc all are connected and installed with the joint, and the inside installation of workstation has power mechanism for rotating adjusting disc, the utility model discloses through power mechanism drive adjusting disc rotation, can realize the quick switching of joint, reduces manual replacement time, and the convenient adaptation, butt joint various metal hoses, the pressurization of test water, recovery and air supply drying process are controlled cabinet cooperation operation, can reduce the process of manual operation, through structural optimization and function integration, effectively solved traditional test process dispersion, the problem that operation is complicated, joint adaptability is poor, realizes efficient, reliable, fast low temperature metal hose test operation.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a metal hose testing device for cryogenic liquid filling. Background Technology

[0002] Metal hoses for cryogenic liquid filling are liquid transport pipelines used to connect cryogenic liquid storage tanks and cryogenic liquid tank trucks during the filling process. They have high safety performance, strict requirements for use, and must be pressure tested once a year.

[0003] The current pressure test process is as follows: water is injected into the test metal hose using a high-level water tank, and then pressurized using a pump. After reaching the test pressure, the pump is stopped, and the test curve is displayed on the touch screen on the control cabinet. After the test is completed, the water needs to be drained, and the moisture in the metal hose is dried using heated air.

[0004] The entire operation involves many manual steps, resulting in a highly fragmented process, inconvenient operation, and long testing time. In addition, different metal hoses require manual replacement of different connectors for docking tests, leading to poor connector compatibility and reduced batch testing efficiency.

[0005] Therefore, in order to solve the above problems, a test device for metal hoses used for filling cryogenic liquids is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a testing device for metal hoses used for cryogenic liquid filling, which reduces manual operation procedures and facilitates quick replacement of connectors, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a metal hose testing device for cryogenic liquid filling, comprising a water tank, a recovery tank, a support frame, and a hot air blower. A workbench is fixedly installed on the upper side of the support frame, and adjusting plates are installed at both ends of the workbench. A through groove is provided on the top of the workbench to expose the adjusting plates. Connectors are installed on the sides of the adjusting plates that are close to each other. A power mechanism for rotating the adjusting plates is installed inside the workbench. The left adjusting plate is connected to the bottom of the water tank via a water inlet pipe. One side of the water inlet pipe is connected to the bottom of the water tank via a water filling pipe. The other side of the water inlet pipe is connected to the input end of the recovery tank via a drain pipe. The output end of the recovery tank is connected to the top of the water tank via a return water pipe. The right adjusting plate is connected to the output end of the hot air blower via an air supply pipe. An overflow pipe is installed on one side of the air supply pipe.

[0008] Specifically, the adjustment plate includes a side pipe, a distribution plate, and a central pipe. The central pipe is fixedly installed at both ends of the worktable. The distribution plate is rotatably installed on the circumferential side of the central pipe. The side pipe is connected to the side of the distribution plates that are close to each other through a rotary connector. The end of the side pipe away from the distribution plate is fixedly installed with a connector. A through hole is opened at the top of the circumferential side of the central pipe. The distribution plate has a circumferentially opened channel inside. One end of the channel is connected to the rotary connector and the other end of the channel points to the central pipe.

[0009] Furthermore, the connectors on the distribution plate are arranged in a circumferential pattern of 3 to 6, and the connectors on the same distribution plate are of different types. The connectors that are aligned left and right are adapted to the same type of metal hose.

[0010] Furthermore, a handle sleeve is fixedly installed on the circumference of the side pipe.

[0011] Specifically, the power mechanism includes a gear ring, gears, a drive shaft, and a dual-output shaft motor. The dual-output shaft motor is fixedly installed on the inner side of the worktable via a support base. The output ends of the dual-output shaft motor are all connected to one end of the drive shaft, and the other end of the drive shaft is fixedly installed with a gear. The circumferential side of the distribution plate is fixedly installed with a gear ring, and the gear ring meshes with the gear on the same side.

[0012] Specifically, the water supply pipe is equipped with a second manual valve, and the water inlet pipe is sequentially equipped with a first manual valve, a first solenoid valve, a first water pump, a fifth solenoid valve, and a first pressure gauge along the conveying direction.

[0013] Specifically, the drain pipe is equipped with a second solenoid valve, and the return water pipe is sequentially equipped with a second water pump, a water purifier, and a third solenoid valve along the conveying direction. The input ends of the water inlet pipe and the drain pipe are located between the first pressure gauge and the left adjustment disc.

[0014] Specifically, the air supply pipe is equipped with a fourth solenoid valve and a second pressure gauge in sequence along the conveying direction, the overflow pipe is equipped with a third manual valve, and the input end of the overflow pipe is located between the second pressure gauge and the right adjustment plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The adjustment disc is driven to rotate by a power mechanism, which enables quick switching of connectors, reduces manual replacement time, and facilitates the adaptation and connection of various metal hoses. The pressurization, recovery, and air drying processes of the test water are coordinated by the control cabinet, which can reduce the amount of manual operation. Through structural optimization and functional integration, the problems of traditional test procedures being scattered, cumbersome, and having poor connector compatibility are effectively solved, enabling efficient, reliable, and fast low-temperature metal hose testing. Attached Figure Description

[0016] Figure 1 This is a schematic front view of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the internal structure of the workbench of this utility model; Figure 3 This is a schematic cross-sectional view of the right-side adjustment disc of this utility model.

[0017] In the diagram: 1 Support frame, 2 Hot air blower, 3 Air supply pipe, 4 Overflow pipe, 5 Connector, 6 Workbench, 7 Adjustment plate, 71 Side pipe, 72 Distribution plate, 73 Channel, 74 Through hole, 75 Center pipe, 76 Grip, 8 Power mechanism, 81 Gear ring, 82 Gear, 83 Drive shaft, 84 Dual output shaft motor, 9 Water supply pipe, 10 Inlet pipe, 11 Water tank, 12 Return pipe, 13 Water purifier, 14 Recycling tank, 15 Drain pipe, 16 Through groove, V1 First manual valve, V2 Second manual valve, V3 First solenoid valve, V4 Fifth solenoid valve, V5 Third manual valve, V6 Fourth solenoid valve, V7 Second solenoid valve, V8 Third solenoid valve, P1 First water pump, P2 Second water pump, PI1 First pressure gauge, PI2 Second pressure gauge. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Please see Figure 1 , Figure 2 , Figure 3 A metal hose testing device for cryogenic liquid filling is provided, including a water tank 11, a recovery tank 14, a support frame 1 and a hot air blower 2. A workbench 6 is fixedly installed on the upper side of the support frame 1. Adjustment plates 7 are installed at both ends of the workbench 6. A through groove 16 is opened on the top of the workbench 6 to expose the adjustment plates 7. Connectors 5 are installed on the sides of the adjustment plates 7 that are close to each other. A power mechanism 8 for rotating the adjustment plates 7 is installed inside the workbench 6. The power mechanism 8 is used to rotate the adjustment plate 7, so that the connector 5 to be used is exposed above the worktable 6 through the through groove 16. The worktable 6 is used to place the metal hose to be tested, so that the two ends of the metal hose can be connected to the connectors 5 on both sides respectively.

[0020] Method of transporting test water: The left adjustment plate 7 is connected to the bottom of the water tank 11 via the water inlet pipe 10. One side of the water inlet pipe 10 is connected to the bottom of the water tank 11 via the water filling pipe 9. The other side of the water inlet pipe 10 is connected to the input end of the recycling tank 14 via the drain pipe 15. The output end of the recycling tank 14 is connected to the top of the water tank 11 via the return water pipe 12.

[0021] During use, the test water stored in the water tank 11 enters the left adjustment plate 7, the connected metal hose and the right adjustment plate 7 through the water inlet pipe 9. The water inlet pipe 10 is used to pressurize the water into the metal hose. After the metal hose test is completed, the test water flows back to the recycling tank 14 through the drain pipe 15. After purification, it enters the water tank 11 through the return water pipe 12 for reuse.

[0022] Method of air delivery for drying: The right adjustment plate 7 is connected to the output end of the hot air blower 2 via the air supply pipe 3. The hot air generated by the hot air blower 2 will be sent into the right adjustment plate 7, the metal hose after the test and the left adjustment plate 7 through the air supply pipe 3 to blow dry and empty the excess water in the pipe. An overflow pipe 4 is connected to one side of the air supply pipe 3. The overflow pipe 4 is used to discharge the air in the metal hose during the test to ensure that the water filling is complete.

[0023] Please see Figure 3 The structure of adjustment disc 7: The adjustment plate 7 includes a side pipe 71, a distribution plate 72, and a central pipe 75. The central pipe 75 is fixedly installed at both ends of the workbench 6. The central pipe 75 is horizontally set. The left central pipe 75 is connected to the water inlet pipe 10, and the right central pipe 75 is connected to the air supply pipe 3. The distribution plate 72 is rotatably installed on the circumference of the central pipe 75 through a rotating sealing ring. The side pipe 71 is connected to the side of the distribution plate 72 that is close to each other through a rotating connector. The end of the side pipe 71 away from the distribution plate 72 is fixedly installed with a connector 5. The distribution plate 72 can rotate on the central pipe 75, and when the side pipe 71 is manually turned, the side pipe 71 can rotate through the rotating connector, thereby completing the operation of the knob connector 5 and facilitating the connection of the metal hose.

[0024] A through hole 74 is provided on the top of the circumferential side of the central tube 75. A channel 73 is provided in the circumferential shape inside the distribution plate 72. One end of the channel 73 is connected to the rotary connector and the other end of the channel 73 points to the central tube 75. When the distribution plate 72 rotates to switch the connector 5, the through hole 74 will only be connected to the through hole 74 directly above, thereby connecting the central tube 75 with the side pipe 71 and the connector 5 directly above.

[0025] There are 3 to 6 connectors 5 on the distribution plate 72 arranged in a circle. The types of connectors 5 on the same distribution plate 72 are different. The connectors 5 aligned on the left and right are adapted to the same type of metal hose to meet the docking requirements of different types of metal hoses.

[0026] A handle 76 is fixedly installed on the circumference of the side pipe 71. The handle 76 has an anti-slip mesh pattern on its circumference. When manually turning the handle 76, torque can be easily applied to the side pipe 71, making the operation of turning the side pipe 71 more convenient.

[0027] Please see Figure 2 The structure of the power mechanism 8: The power mechanism 8 includes a gear ring 81, a gear 82, a transmission shaft 83, and a dual-output shaft motor 84. The dual-output shaft motor 84 is fixedly installed on the inner side of the worktable 6 via a support base. The output ends of the dual-output shaft motor 84 are all connected to one end of the transmission shaft 83 via a coupling. The other end of the transmission shaft 83 is fixedly installed with a gear 82. The gear ring 81 is fixedly installed on the circumference of the distribution disc 72, and the gear ring 81 meshes with the gear 82 on the same side.

[0028] The dual-output shaft motor 84 is an existing component with a servo motor, encoder and left and right output ends. When working, the dual-output shaft motor 84 rotates the gear 82 through the transmission shaft 83. After being driven by the meshing gear ring 81, it can simultaneously rotate the distribution disks 72 on both sides to realize the synchronous switching and positioning of the connector 5.

[0029] A bearing seat for supporting the drive shaft 83 is fixedly installed on the inner bottom of the worktable 6 to ensure the stability of the drive shaft 83 when it rotates.

[0030] Specific structure of the pipeline: The water supply pipe 9 is equipped with a second manual valve V2; the water storage tank 11 is an existing component consisting of a tank body, a cover and a vent valve, etc. The water storage tank 11 is placed at a height by a support platform. After the second manual valve V2 is opened, the test water can be filled into the metal hose by gravity.

[0031] Along the conveying direction, the water inlet pipe 10 is sequentially equipped with a first manual valve V1, a first solenoid valve V3, a first water pump P1, a fifth solenoid valve V4, and a first pressure gauge PI1. The first manual valve V1 is used to control the main drain valve of the water storage tank 11. The first solenoid valve V3 and the fifth solenoid valve V4 are used to control the valve connecting the first water pump P1 to the water inlet pipe 10. The first pressure gauge PI1 is used to monitor the water pressure pumped into the metal hose. During operation, the first water pump P1 pressurizes the water in the water storage tank 11 and sends it into the left adjustment plate 7, the connected metal hose, and the right adjustment plate 7.

[0032] The drain pipe 15 is equipped with a second solenoid valve V7; after the test is completed, the second solenoid valve V7 is opened, and the water in the metal hose flows back to the recovery tank 14 through the drain pipe 15.

[0033] The return water pipe 12 is sequentially equipped with a second water pump P2, a water purifier 13, and a third solenoid valve V8 along the conveying direction. The second water pump P2 is preferably a sewage pump, which has the ability to resist corrosion and perform preliminary filtration. It is suitable for application environments that come into contact with recycled water. The input end of the second water pump P2 extends to the bottom of the recycling tank 14. When in use, the third solenoid valve V8 is opened. The sewage pumped by the second water pump P2 is purified by the water purifier 13 and then returned to the water storage tank 11 for reuse.

[0034] The recycling tank 14 is a box-shaped tank with an open top, and a liquid level sensor is fixedly installed on the side wall. When the recycled water reaches the position of the liquid level sensor, the purification and recycling operation is started once.

[0035] The inlet of water pipe 9 and the outlet of water pipe 15 are located between the first pressure gauge PI1 and the left adjustment plate 7; the proximity to the left adjustment plate 7 facilitates the rapid entry and exit of test water.

[0036] The air supply pipe 3 is sequentially equipped with a fourth solenoid valve V6 and a second pressure gauge PI2 along the conveying direction; the hot air blower 2 is an existing component with a blower, heating wire and other structures. When working, the fourth solenoid valve V6 is opened, and the generated hot air enters the right adjustment plate 7, the connected metal hose and the left adjustment plate 7 through the air supply pipe 3; the second pressure gauge PI2 is also used to monitor the water pressure, and together with the first pressure gauge PI1, it monitors the water pressure, and the value is more reliable and accurate.

[0037] The overflow pipe 4 is equipped with a third manual valve V5. The third manual valve V5 is opened manually to discharge part of the water that has been filled into the metal hose, and then closed to ensure that the test water is fully filled and to prevent gas from remaining in the metal hose. The input end of the overflow pipe 4 is located between the second pressure gauge PI2 and the right adjustment plate 7. The overflow pipe 4, which is located close to the right adjustment plate 7, can discharge excess gas in a timely manner.

[0038] The electrical components (dual-shaft motor 84, hot air blower 2, solenoid valve and pressure gauge, etc.) are electrically connected to the external control cabinet. The control cabinet is an existing device that includes a PLC controller, touch screen, power supply module and various signal conversion modules. It is used to uniformly and collaboratively control the various electrical components and realize the regulation of the entire metal hose testing device.

[0039] The working steps of this embodiment are as follows: S1. Preparation stage: First, degrease the metal hose to be tested with trichloroethylene. After degreasing, thoroughly clean the metal hose with water and then set it aside for later use.

[0040] S2. Connection stage: According to the type of metal hose to be tested in this batch, the control cabinet drives the power mechanism 8 to switch the corresponding two connectors 5 to the top of the workbench 6, and connect the two ends of the metal hose to the corresponding two connectors 5 respectively.

[0041] S3. Water delivery test stage: Manually open the first manual valve V1, the second manual valve V2, and the third manual valve V5. The water in the water tank 11 enters the left adjustment plate 7, the connected metal hose and the right adjustment plate 7 through the water inlet pipe 9. After seeing water discharged from the top of the overflow pipe 4, close the second manual valve V2 and the third manual valve V5. The control cabinet starts the first solenoid valve V3, the fifth solenoid valve V4 and the first water pump P1 to pressurize water and send it into the metal hose. At the same time, the first pressure gauge PI1 and the second pressure gauge PI2 monitor the pressure. When the pressure reaches the test pressure, the first water pump P1 is stopped, the first solenoid valve V3 and the fifth solenoid valve V4 are closed, and the pressure is maintained for 2 minutes. If the pressure does not drop, it is qualified; if the pressure drops, it is unqualified. During this stage, both the second solenoid valve V7 and the fourth solenoid valve V6 are closed.

[0042] S4. Test Completion Stage: The control cabinet controls the second solenoid valve V7 to open, allowing the used water in the metal hose to flow through the drain pipe 15 into the recycling tank 14. When the water level in the recycling tank 14 reaches the level sensor position, the control cabinet controls the third solenoid valve V8 to open, and simultaneously starts the second water pump P2. The second water pump P2 sucks out the sewage in the recycling tank 14, which is then purified by the water purifier 13 and returned to the water storage tank 11, realizing the reuse of water.

[0043] S5. Air drying stage: The second solenoid valve V7 is not closed at this time. The control cabinet controls the fourth solenoid valve V6 to open and start the hot air blower 2 for two minutes. The hot air generated by the hot air blower 2 is sent through the air supply pipe 3 into the right adjustment plate 7, the metal hose after the test and the left adjustment plate 7, and further blows the residual water into the drain pipe 15 for drainage. After completion, turn off the hot air blower 2, reset the solenoid valve to its initial state, and finally tighten the connector 5 to remove the metal hose that has completed this test, and then you can proceed with the next test.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing apparatus for metal hoses used in cryogenic liquid filling, characterized in that: It includes a water tank (11), a recycling tank (14), a support frame (1) and a hot air blower (2). A workbench (6) is fixedly installed on the upper side of the support frame (1). An adjustment plate (7) is installed at both ends of the workbench (6). A through groove (16) is opened on the top of the workbench (6) to expose the adjustment plate (7). A connector (5) is installed on the side of the adjustment plates (7) that are close to each other. A power mechanism (8) for rotating the adjustment plate (7) is installed inside the workbench (6). The adjustment plate (7) on the left is connected to the bottom of the water tank (11) via the water inlet pipe (10). One side of the water inlet pipe (10) is connected to the bottom of the water tank (11) via the water filling pipe (9). The other side of the water inlet pipe (10) is connected to the input end of the recycling tank (14) via the drain pipe (15). The output end of the recycling tank (14) is connected to the top of the water tank (11) via the return water pipe (12). The adjustment plate (7) on the right is connected to the output end of the hot air blower (2) through the air supply pipe (3), and an overflow pipe (4) is connected to one side of the air supply pipe (3).

2. The metal hose testing device for cryogenic liquid filling according to claim 1, characterized in that: The adjustment plate (7) includes a side pipe (71), a distribution plate (72) and a center pipe (75). The center pipe (75) is fixedly installed at both ends of the workbench (6). The distribution plate (72) is rotatably installed on the circumferential side of the center pipe (75). The side pipe (71) is connected to the side of the distribution plate (72) that is close to each other through a rotary connector. The end of the side pipe (71) away from the distribution plate (72) is fixedly installed with a connector (5). A through hole (74) is opened at the top of the circumferential side of the center pipe (75). The distribution plate (72) has a channel (73) circumferentially opened inside. One end of the channel (73) is connected to the rotary connector and assembled, and the other end of the channel (73) points to the center pipe (75).

3. The metal hose testing device for cryogenic liquid filling according to claim 2, characterized in that: The connectors (5) on the distribution plate (72) are arranged in a circumferential pattern of 3 to 6. The connectors (5) on the same distribution plate (72) are of different types, and the connectors (5) aligned on the left and right are adapted to the same type of metal hose.

4. The metal hose testing device for cryogenic liquid filling according to claim 2, characterized in that: The side pipe (71) is fixedly equipped with a handle sleeve (76) on its circumference.

5. The metal hose testing device for cryogenic liquid filling according to claim 2, characterized in that: The power mechanism (8) includes a gear ring (81), a gear (82), a transmission shaft (83), and a dual-output shaft motor (84). The dual-output shaft motor (84) is fixedly installed on the inner side of the worktable (6) by a support seat. The output ends of the dual-output shaft motor (84) are all connected to one end of the transmission shaft (83). The other end of the transmission shaft (83) is fixedly installed with a gear (82). The gear ring (81) is fixedly installed on the circumferential side of the distribution disc (72). The gear ring (81) meshes with the gear (82) on the same side.

6. The metal hose testing device for cryogenic liquid filling according to claim 1, characterized in that: The water supply pipe (9) is equipped with a second manual valve (V2), and the water inlet pipe (10) is sequentially equipped with a first manual valve (V1), a first solenoid valve (V3), a first water pump (P1), a fifth solenoid valve (V4), and a first pressure gauge (PI1) along the conveying direction.

7. The metal hose testing device for cryogenic liquid filling according to claim 6, characterized in that: The drain pipe (15) is equipped with a second solenoid valve (V7), and the return water pipe (12) is sequentially equipped with a second water pump (P2), a water purifier (13) and a third solenoid valve (V8) along the conveying direction. The input ends of the water supply pipe (9) and the drain pipe (15) are located between the first pressure gauge (PI1) and the left adjustment plate (7).

8. The metal hose testing device for cryogenic liquid filling according to claim 1, characterized in that: The air supply pipe (3) is sequentially equipped with a fourth solenoid valve (V6) and a second pressure gauge (PI2) along the conveying direction. The overflow pipe (4) is equipped with a third manual valve (V5). The input end of the overflow pipe (4) is located between the second pressure gauge (PI2) and the right adjustment plate (7).

Images