Ship cabin sealing test auxiliary equipment based on tightness unsealed cabin

Abstract

The invention relates to the technical field of sealing tests, and discloses a ship cabin sealing test auxiliary device based on tightness unsealed cabin, which comprises a detection box, an air pump, an observation groove arranged on the side wall of the detection box, an observation window arranged in the observation groove, and an experiment unit arranged on the detection box, the experiment unit comprises a blanking part arranged at the upper end of the detection box and a sealing part arranged at the lower end of the detection box; when air in the detection box is extracted, the air pressure in the detection box is monitored through the pressure sensor to ensure that the air pressure reaches the standard required by the test, so that when the vacuum box is subjected to vacuum treatment and the vacuum box reaches the specified negative pressure, the blanking part is triggered instantly; and the soapy water in the discharging barrel is sprayed on the welding seam to be detected under the negative pressure action in the vacuum box, so that the purpose of firstly vacuumizing and then spraying the soapy water is achieved, the situation that the soapy water is broken and fused under the change of the air pressure is effectively avoided, and the monitoring accuracy is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing tests, and particularly to an auxiliary device for ship cabin sealing tests based on non-sealed cabins with airtightness. Background Art

[0002] When painting or spraying paint after the section (or sub-assembly) welding and rust removal are completed, the watertight and oil-tight welds should be left unpainted or covered with tape. After the ship is assembled on the slipway and until the airtightness test is completed, the paint can be removed manually by chipping and then repainted. This not only consumes a large amount of manpower but also makes it difficult to ensure the rust removal and painting quality of the watertight and oil-tight welds. Therefore, the present invention realizes the large-scale section by optimizing the section division, combines small cabins into the same section as much as possible, conducts the section airtightness test, and adopts the in-slipway intermediate assembly to combine one or more small sections into a large section before painting under the slipway, so as to complete the intermediate assembly stage of the small cabins and conduct the section airtightness test. That is, before combining multiple small sections into a large section, the weld areas of the small-section ship cabins are separately sealed and detected. The vacuum box sealing detection is carried out on multiple small ship cabins through a detection box, so that the sealing detection is completed before multiple small ship cabins form a large ship cabin, and painting or spraying can be directly carried out.

[0003] During the section airtightness test, a vacuum box is usually used to detect the welds for airtightness, but there are the following problems with the vacuum box detection: When the existing vacuum box is used for the section airtightness test of the welds, the staff needs to first apply soapy water on the welds. If soapy water is first sprayed on the surface of the object to be detected (weld), during the vacuum pumping process, due to the change in the ambient air pressure at the soap package on the object surface, the soapy water may undergo morphological changes caused by non-leakage factors. For example, the reduction in air pressure may cause some soap bubbles originally formed by surface tension to burst or merge, causing misjudgment for the detection personnel. Summary of the Invention

[0004] In view of the problem in the prior art that spraying soapy water on the weld surface in advance may cause the soap bubbles to burst or merge due to pressure changes during the vacuum pumping process, resulting in misjudgment for the staff, an auxiliary device for ship cabin sealing tests based on non-sealed cabins with airtightness is proposed.

[0005] The present application provides an auxiliary device for ship cabin sealing tests based on non-sealed cabins with airtightness, and its purpose is: by setting a blanking component, when the vacuum box is vacuum-treated and reaches the specified negative pressure, the blanking component is instantly triggered, and the soapy water in the discharge cylinder is sprayed on the weld to be detected through the negative pressure in the vacuum box, thereby realizing the purpose of first pumping vacuum and then spraying soapy water, effectively avoiding the situation of bursting and merging of soapy water under the change of air pressure, and effectively improving the accuracy of monitoring.

[0006] The technical solution of the present invention is as follows: An auxiliary device for ship cabin sealing test based on non-sealed cabin tightness, including a detection box and an air extraction pump, an observation groove opened on the side wall of the detection box, an observation window arranged in the observation groove, and further including an experimental unit arranged on the detection box. The experimental unit includes a feeding component arranged at the upper end of the detection box and a sealing component arranged at the lower end of the detection box; The feeding component includes a sliding groove opened inside the upper wall of the detection box, a plurality of compression springs arranged on the side wall of the sliding groove, a sliding plate arranged between the plurality of compression springs, a communication groove opened on the upper wall of the detection box, a piston box arranged in the communication groove, a movable plate slidably arranged on the inner wall of the piston box, a hanging bracket arranged at the upper end of the detection box, a spring rod arranged at the lower end of the hanging bracket, the lower end of the spring rod is fixedly communicated with the upper end of the movable plate, a special-shaped plate arranged at the lower end of the movable plate, a trapezoidal groove opened on the side wall of the special-shaped plate, a controller is fixedly installed on the air extraction pump, and a pressure sensor for real-time monitoring of the internal pressure of the detection box is fixedly installed on the side wall of the detection box; The sliding plate is slidably installed in the sliding groove, the observation window is made of tempered glass, a rubber ring is fixedly installed between the observation window and the detection box, the plurality of compression springs are in a compressed state, the end face shape and size of the movable plate are equal to the end face shape and size of the inner wall of the piston box, one end of the sliding plate is in close contact with the side wall of the special-shaped plate, the end face shape of the trapezoidal groove is a right trapezoid, and a material storage component is installed at the upper end of the detection box.

[0007] Further, the input end of the controller is electrically connected to the pressure sensor, and the output end of the controller is electrically connected to the air extraction pump.

[0008] Further, the material storage component includes a material storage box arranged at the upper end of the detection box, a push plate slidably arranged on the inner wall of the material storage box, a push rod arranged at the upper end of the push plate, the push rod slidably penetrates through the upper end of the material storage box, the inside of the material storage box is filled with soapy water, and the soapy water is located below the push plate, the end face shape and size of the push plate are equal to the end face shape and size of the inner wall of the material storage box, and a discharging element is installed between the material storage box and the detection box.

[0009] Further, the discharging element includes an installation groove opened on the upper wall of the detection box, an installation plate arranged in the installation groove, a plurality of discharging cylinders arranged on the installation plate, support plates respectively arranged at the upper ends of the corresponding discharging cylinders, return springs respectively arranged at the lower ends of the corresponding support plates, discharging plates respectively arranged at the lower ends of the corresponding return springs, the discharging plates are slidably installed on the inner walls of the discharging cylinders, the end face shape and size of the discharging plates are equal to the end face shape and size of the inner walls of the discharging cylinders, and one-way pipes are arranged between the material storage box and the discharging cylinders.

[0010] Further, the lower ends of the plurality of discharging cylinders are all in close contact with the upper end of the sliding plate.

[0011] Further, the sealing member includes an air outlet interface disposed on the side wall of the detection box, a control block disposed at one end of the air outlet interface, a control valve disposed on the side wall of the control block, and an air outlet pipe disposed between the control block and the air extraction pump.

[0012] Further, a sealing sleeve is fixedly installed at the lower end of the detection box. A fixing groove is formed at the lower end of the sealing sleeve. A square ring airbag is fixedly installed in the fixing groove. An inflation pipe is fixedly installed on the side wall of the square ring airbag. A connecting pipe is fixedly connected between one end of the inflation pipe and the air extraction pump.

[0013] Further, an air release pipe is installed on the side wall of the square ring airbag, and a balance valve for balancing the air pressure inside the detection box is installed on one side of the control block.

[0014] Advantages of the present invention: 1. While evacuating the detection box, the air pressure inside the detection box is monitored by a pressure sensor to ensure that the air pressure reaches the required level for the test. When the negative pressure in the vacuum box reaches a certain value, the soapy water in the discharge cylinder will be sprayed on the weld surface. When the vacuum box is first evacuated to a vacuum, the inside of the box is in a negative pressure state. If there is a leakage point in the object to be detected, the outside air will enter the vacuum box through the leakage point under the action of the pressure difference. At this time, when the soapy water is sprayed again, the air flow at the leakage point will blow out obvious soap bubbles, and the position of the soap bubbles can accurately indicate the leakage position. Because in a vacuum environment, the directionality of the air flow generated by the leakage is clearer and can more accurately indicate the leakage position. This method can effectively avoid false positive structures and improve the detection accuracy.

[0015] 2. Vacuum-treating the detection box first can create a relatively stable detection environment. When the soapy water is sprayed subsequently, the detection personnel can more clearly see the newly generated foam. Because there is no interference from the previous foam, the detection personnel can focus on the position of the newly emerged soap bubbles after the vacuum extraction and can better record these leakage positions, because the generation of the foam at this time is solely caused by the air entering the vacuum box under the pressure difference.

[0016] 3. By setting the sealing member, when the inside of the vacuum box is vacuum-treated, the inside of the square ring airbag is filled with gas, causing the square ring airbag to expand. During the vacuum process of the vacuum box, the external atmospheric pressure generates pressure on the vacuum box and acts on the upper end of the square ring airbag, enabling the square ring airbag to fill the gap between the vacuum box and the point to be detected during the expansion process, improving the overall internal sealing performance of the vacuum box. At the same time, the setting of the square ring airbag enables the vacuum box to detect above the point to be detected with an uneven surface, improving the applicability of the vacuum box. Description of the Drawings

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the first perspective of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the second perspective of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the third perspective of the present invention; Figure 4 Schematic diagram of the installation of the square-ring airbag of the present invention; Figure 5 Schematic diagram of the structure of the material storage component of the present invention; Figure 6 For the present invention Figure 1 Enlarged structure schematic diagram at position A in; Figure 7 Schematic diagram of the structure of the blanking component of the present invention; Figure 8 For the present invention Figure 7 Enlarged structure schematic diagram at position B in; Figure 9 Schematic diagram of the structure of the discharge element of the present invention; Figure 10 Schematic diagram of the internal structure of the material storage box of the present invention; Figure 11 Schematic diagram of the flow chart of the controller of the present invention.

[0018] In the figure: 1. Detection box; 2. Air extraction pump; 3. Observation window; 4. Sliding groove; 5. Compression spring; 6. Sliding plate; 7. Piston box; 8. Movable plate; 9. Hanging bracket; 10. Spring rod; 11. Special-shaped plate; 12. Trapezoidal groove; 13. Material storage box; 14. Pushing plate; 15. Push rod; 16. Mounting plate; 17. Discharge cylinder; 18. Support plate; 19. Return spring; 20. Discharge plate; 21. One-way pipe; 22. Air outlet interface; 23. Control block; 24. Control valve; 25. Air outlet pipe; 26. Sealing sleeve; 27. Fixed groove; 28. Square-ring airbag; 29. Inflation pipe; 30. Connecting pipe; 31. Pressure sensor; 32. Balance valve; 33. Controller. Detailed implementation manners

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention in conjunction with the accompanying drawings of the specification.

[0020] Example 1, referring to Figures 1-5 And Figures 7-9, which is the first embodiment of the present invention, provides an auxiliary device for the ship cabin sealing test based on non-sealed cabin tightness, including a detection box 1, an air extraction pump 2, an observation groove opened on the side wall of the detection box 1, an observation window 3 fixedly installed in the observation groove, and an experimental unit installed on the detection box 1. The experimental unit includes a blanking component installed at the upper end of the detection box 1 and a sealing component installed at the lower end of the detection box 1.

[0021] The blanking component includes a sliding groove 4 opened inside the upper wall of the detection box 1, a plurality of compression springs 5 fixedly installed on the side wall of the sliding groove 4, a sliding plate 6 fixedly installed between the plurality of compression springs 5, a communication groove opened on the upper wall of the detection box 1, a piston box 7 fixedly installed in the communication groove, a movable plate 8 slidably installed on the inner wall of the piston box 7, a hanging bracket 9 fixedly installed at the upper end of the detection box 1, a spring rod 10 fixedly installed at the lower end of the hanging bracket 9, the lower end of the spring rod 10 is fixedly communicated with the upper end of the movable plate 8, a special-shaped plate 11 fixedly installed at the lower end of the movable plate 8, a trapezoidal groove 12 opened on the side wall of the special-shaped plate 11, a controller 33 fixedly installed on the air extraction pump 2, and a pressure sensor 31 fixedly installed on the side wall of the detection box 1 for real-time monitoring of the internal pressure of the detection box 1.

[0022] The observation window 3 is made of tempered glass, a rubber ring is fixedly installed between the observation window 3 and the detection box 1, the plurality of compression springs 5 are in a compressed state, the end face shape and size of the movable plate 8 are equal to the end face shape and size of the inner wall of the piston box 7, one end of the sliding plate 6 is in close contact with the side wall of the special-shaped plate 11, the end face shape of the trapezoidal groove 12 is a right trapezoid, and a storage component is installed at the upper end of the detection box 1.

[0023] The discharging element includes an installation groove opened on the upper wall of the detection box 1, an installation plate 16 fixedly installed in the installation groove, a plurality of discharging cylinders 17 fixedly installed on the installation plate 16, support plates 18 respectively fixedly installed at the upper ends of the corresponding discharging cylinders 17, return springs 19 respectively fixedly installed at the lower ends of the corresponding support plates 18, discharging plates 20 respectively fixedly installed at the lower ends of the corresponding return springs 19, the discharging plates 20 are slidably installed on the inner walls of the discharging cylinders 17, the end face shape and size of the discharging plates 20 are equal to the end face shape and size of the inner walls of the discharging cylinders 17, one-way pipes 21 fixedly installed between the storage box 13 and the discharging cylinders 17, and the lower ends of the plurality of discharging cylinders 17 are in close contact with the upper end of the sliding plate 6. The input end of the controller 33 is electrically connected to the pressure sensor 31, and the output end of the controller 33 is electrically connected to the air extraction pump 2.

[0024] Specifically, refer to Figure 11, the staff can accurately set the threshold value through the controller 33. When the air extraction pump 2 is controlled to open through the controller 33, the pressure inside the detection box 1 gradually decreases. The pressure sensor 31 monitors the pressure change inside the detection box 1 at all times and transfers the pressure value inside the detection box 1 to the controller 33. When the pressure inside the detection box 1 reaches the threshold value (the threshold value is the value when the feeding component is triggered), the controller 33 controls the air extraction pump 2 to stop working, preventing the situation where the air extraction pump 2 still continues to work after the feeding component is triggered, resulting in false alarms of soapy water. At the same time, the controller 33 is electrically connected to the air release pipe and the balance valve 32 respectively. After the detection is completed, the staff can directly control the air release pipe and the balance valve 32 to open through the controller to balance the gas inside the detection box 1, facilitating subsequent re-detection.

[0025] Specifically, the spring rod 10, the return spring 19, and the compression spring 5 all play a role in returning. The observation window 3 facilitates the staff to observe the state of the soapy water at the internal weld to determine whether there is a leak at the weld. A nozzle (not shown in the figure) is provided at the lower end of the discharge cylinder 17. The nozzle can make the soapy water in the discharge cylinder 17 spray from the lower end to the upper surface of the weld (even if the soapy water is not evenly sprayed, as long as it can ensure that the weld is within the spraying range of the nozzle and the weld surface is sprayed with enough soapy water). The principle of the soapy water in the discharge cylinder 17 being sprayed on the upper surface of the weld is that when the negative pressure inside the detection box 1 reaches the appropriate test value, at this time, since the upper end of the movable plate 8 is in contact with the outside air and the lower end of the movable plate 8 is in contact with the inside of the detection box 1, the movable plate 8 is subjected to the atmospheric pressure vertically downward (ideally, the air pressure received by the movable plate 8 is equal to the negative pressure inside the detection box 1). When the movable plate 8 is subjected to the air pressure, one end of the spring rod 10 expands and contracts downward due to the air pressure received by the movable plate 8 and drives the special-shaped plate 11 to move downward synchronously. When the negative pressure inside the detection box 1 reaches the appropriate value, when the special-shaped plate 11 moves downward, its trapezoidal groove 12 is at the same height as the sliding plate 6. Since the sliding plate 6 is always subjected to the elastic force of the compression spring 5, but has been limited by one end of the special-shaped plate 11 before, when the trapezoidal groove 12 and the sliding plate 6 are at the same height, the sliding plate 6 slides into the trapezoidal groove 12 under the elastic force of the compression spring 5, causing the sliding plate 6 to slide a certain distance in the horizontal direction. After the sliding plate 6 slides horizontally for a certain distance, the lower ends of the multiple discharge cylinders 17 in the installation groove are connected to the inside of the detection box 1. Since the discharge plate 20 inside the discharge cylinder 17 has the same principle as the movable plate 8, the outside air pressure will cause the discharge plate 20 to slide downward numerically. The downward-sliding discharge plate 20 will stretch the return spring 19 while squeezing the soapy water at the lower end of the discharge plate 20 into the detection box 1. Thus, when the negative pressure inside the detection box 1 reaches the appropriate detection value, the discharge cylinder 17 can spray the soapy water inside it above the weld under the action of the negative pressure.

[0026] The working principle of the blanking component is as follows: When the inside of the detection box 1 is under vacuum treatment and the negative pressure inside reaches a specific value, under the action of pressure, the blanking component sprays the soapy water inside the discharge cylinder 17 above the weld to be detected for seal detection. In the existing detection method, usually the soapy water is first sprayed above the weld, and then the detection box 1 is sealed. Although this method can also perform seal detection on the weld, when the detection box 1 is under vacuum treatment, due to the change in internal pressure, the soapy water will continuously fuse and break, which will affect the judgment of the staff. Therefore, by designing the blanking component, when the negative pressure inside the detection box 1 reaches a specific value and the pressure inside the detection box 1 is stable, the blanking component will spray the soapy water on the upper surface of the weld for a seal test. This method can effectively reduce the influence of the soapy water generating foam due to external factors, improve the detection accuracy of the detection box 1, and facilitate the staff to more intuitively observe the airtightness detection of the weld.

[0027] The function of the spring rod 10 is as follows: When the pressure inside the detection box 1 is continuously decreasing, due to the gradually increasing difference between the external atmospheric pressure and the pressure inside the detection box 1, the atmospheric pressure acting on the movable plate 8 gradually increases. When the movable plate 8 is subjected to the continuously increasing external air pressure, it will drive one end of the spring rod 10 to continuously extend downward. Since other factors of the spring rod 10 remain unchanged and the length of its extension is proportional to the tensile force it receives, when the negative pressure inside the detection box 1 reaches a specific value, the extended length of the spring rod 10 just makes the trapezoidal groove 12 on the special-shaped plate 11 at its lower end at the same height as the sliding plate 6. Then the sliding plate 6 slides horizontally, and the soapy water inside the discharge cylinder 17 is sprayed on the upper surface of the weld under the action of negative pressure. The elastic force of the spring rod 10 is much greater than the sum of the elastic forces of the multiple compression springs 5. At the same time, when the negative pressure inside the detection box 1 reaches a specific value, the telescopic length of the spring rod 10 can just make the trapezoidal groove 12 at the same height as the sliding plate 6. The purpose of this setting is that when the negative pressure inside the detection box 1 reaches a suitable size for detection, the sliding plate 6 slides along the sliding groove 4 under the action of the multiple compression springs 5, so that the sliding plate 6 no longer closes the lower end of the discharge cylinder 17. At this time, the inside of the discharge cylinder 17 is connected to the inside of the detection box 1, and the discharge plate 20 inside the discharge cylinder 17 is pressed downward and moves downward under the action of atmospheric pressure. During the downward movement of the discharge plate 20, the soapy water inside the discharge cylinder 17 is discharged onto the weld inside the detection box 1, so that the soapy water performs airtight detection on the weld. The multiple compression springs 5 and the discharge cylinder 17 are arranged alternately, so that when the discharge cylinder 17 sprays soapy water, the compression springs 5 will not affect it.

[0028] Example 2, refer to Figures 3-6, which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the sealing component includes an air outlet interface 22 fixedly installed on the side wall of the detection box 1, a control block 23 fixedly installed at one end of the air outlet interface 22, a control valve 24 fixedly installed on the side wall of the control block 23, and an air outlet pipe 25 fixedly installed between the control block 23 and the air extraction pump 2. A sealing sleeve 26 is fixedly installed at the lower end of the detection box 1. A fixing groove 27 is formed at the lower end of the sealing sleeve 26. A square ring airbag 28 is fixedly installed in the fixing groove 27. An inflation pipe 29 is fixedly installed on the side wall of the square ring airbag 28. One end of the inflation pipe 29 is fixedly communicated with the air extraction pump 2 through a connecting pipe 30. A pressure sensor 31 for real-time monitoring of the internal pressure of the detection box 1 is fixedly installed on the side wall of the detection box 1. An air release pipe (not shown in the figure) is installed on the side wall of the square ring airbag 28. A balance valve 32 for balancing the internal air pressure of the detection box 1 is installed on one side of the control block 23.

[0029] Specifically, the function of the sealing component is as follows: while the air extraction pump 2 evacuates the inside of the detection box 1, it can perform a more airtight sealing process around the detection box 1. When the air extraction pump 2 extracts the air inside the detection box 1, the air extraction pump 2 can directly discharge the air into the square ring airbag 28, causing the square ring airbag 28 to expand. The expanded square ring airbag 28 can automatically fill the gaps around the detection box 1 to ensure the airtightness of the detection box 1 during the evacuation process. The control valve 24 on the control block 23 is used to control the connection and closing of the air outlet pipe 25. The air release pipe is used to release the gas inside the square ring airbag 28. After the detection is completed, the staff can quickly discharge the gas inside the square ring airbag 28 through the air release pipe, which is convenient for the sealing detection of the next part of the weld area. The balance valve 32 is used to restore the internal pressure of the detection box 1 to the normal level after the detection. Since the negatively pressured detection box 1 is firmly adsorbed on the surface of the detection object under the action of air pressure and is not convenient to move, the staff can restore the internal pressure of the detection box 1 through the balance valve 32 so that the internal pressure is equal to the external atmospheric pressure, which is convenient for the subsequent movement of the staff.

[0030] The remaining structures are the same as those in Embodiment 1.

[0031] Embodiment 3, referring to Figures 1-2 and Figure 10 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the material storage component includes a material storage box 13 fixedly installed at the upper end of the detection box 1, a push plate 14 slidably installed on the inner wall of the material storage box 13, a push rod 15 fixedly installed at the upper end of the push plate 14, the push rod 15 slidably penetrating through the upper end of the material storage box 13. The inside of the material storage box 13 is filled with soapy water, and the soapy water is located below the push plate 14. The end face shape and size of the push plate 14 are equal to those of the inner wall of the material storage box 13. An outlet component is installed between the material storage box 13 and the detection box 1.

[0032] Specifically, the function of the material storage assembly is as follows: it provides soapy water for multiple discharge cylinders 17. When the staff conducts a seal detection on the weld seam, the soapy water inside the discharge cylinder 17 is sprayed onto the surface of the weld seam for seal detection. After the complete detection, when the staff conducts detection on other weld seams, they can drive the push plate 14 to move downward by pressing the push rod 15, and then push the soapy water in the storage tank 13 into the discharge cylinder 17 for storage, which is convenient for the next airtight detection. A liquid adding pipe (not shown in the figure) is provided on the side wall of the storage tank 13, and the liquid adding pipe is used to supplement the soapy water in the storage tank 13.

[0033] The remaining structure is the same as that of Embodiment 2.

[0034] Combining Embodiments 1-3, the working principle of the present invention is as follows: The staff places the detection box 1 above the weld seam to be detected, and the staff turns on the air extraction pump 2. The air extraction pump 2 extracts the air inside the detection box 1 and directly discharges it into the square ring airbag 28, so that the square ring airbag 28 expands to fill the gaps around the detection box 1. At the same time, as the air inside the detection box 1 decreases, the atmospheric pressure outside the detection box 1 acting on it gradually increases, and the detection box 1 is firmly fixed on the surface of the area to be detected under the action of the atmospheric pressure.

[0035] When the negative pressure inside the detection box 1 decreases, the movable plate 8 inside the piston box 7 slides downward under the action of the air pressure, and drives the spring rod 10 to extend downward. When the negative pressure inside the detection box 1 reaches a specific value, the trapezoidal groove 12 at the lower end of the special-shaped plate 11 is just at the same height as the sliding plate 6. The sliding plate 6 slides horizontally along the sliding groove 4 under the elastic force of multiple compression springs 5. After the sliding plate 6 slides into the trapezoidal groove 12, the lower ends of the multiple discharge cylinders 17 are connected to the inside of the detection box 1. The discharge plate 20 inside the discharge cylinder 17 slides downward under the action of the pressure. During the sliding process, the soapy water inside the discharge cylinder 17 is pressed into the detection box 1 above the weld seam to detect the weld seam. If there is a gap at the weld seam, bubbles will continuously generate in the corresponding area. If there is no gap, no bubbles will be generated.

[0036] After the detection is completed, the staff opens the detection box 1 through the balance valve 32 to restore the pressure inside the detection box 1 to the normal level. At the same time, the air release pipe is opened to discharge the air inside the square ring airbag 28. At the same time, the movable plate 8 is reset under the action of the spring rod 10. The upward reset of the movable plate 8 drives the special-shaped plate 11 to reset upward. When the special-shaped plate 11 resets upward, it generates a horizontal thrust on the sliding plate 6, so that the sliding plate 6 resets to close the lower ends of the plurality of discharge cylinders 17. At the same time, the discharge plate 20 is reset under the action of the reset spring 19. After the discharge plate 20 is reset, the staff presses the push rod 15, so that the push plate 14 moves downward synchronously. When the push plate 14 moves downward, the soapy water in the storage tank 13 is pressed into the discharge cylinder 17 to supplement it for the next use.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A ship cabin sealing test auxiliary equipment based on tightness without sealing the cabin, comprising a test box and an air pump, an observation slot provided on the side wall of the test box, and an observation window provided in the observation slot, characterized in that: It also includes an experimental unit arranged on the detection box, wherein the experimental unit includes a blanking component arranged at the upper end of the detection box and a sealing component arranged at the lower end of the detection box; The blanking component includes a sliding groove provided inside the upper wall of the detection box, a plurality of compression springs provided on the side wall of the sliding groove, a sliding plate provided between the plurality of compression springs, a connecting groove provided on the upper wall of the detection box, a piston box provided in the connecting groove, a movable plate slidably provided on the inner wall of the piston box, a hanger provided on the upper end of the detection box, a spring rod provided at the lower end of the hanger, the lower end of the spring rod being fixedly connected with the upper end of the movable plate, a special-shaped plate provided at the lower end of the movable plate, a trapezoidal groove provided on the side wall of the special-shaped plate, a controller fixedly installed on the vacuum pump, and a pressure sensor for real-time monitoring of the internal pressure of the detection box fixedly installed on the side wall of the detection box; The sliding plate is slidably installed in the sliding groove, the observation window is made of tempered glass, a rubber ring is fixedly installed between the observation window and the detection box, a plurality of compression springs are in a compressed state, the end face shape and size of the movable plate are equal to the end face shape and size of the inner wall of the piston box, one end of the sliding plate is tightly fitted with the side wall of the special-shaped plate, the end face shape of the trapezoidal groove is a right-angled trapezoid, and a storage assembly is installed at the upper end of the detection box.

2. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 1 is characterized by: The input end of the controller is electrically connected to the pressure sensor, and the output end of the controller is electrically connected to the air pump.

3. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 1, characterized in that: The material storage assembly includes a material storage box arranged at the upper end of the detection box, a push plate slidably arranged on the inner wall of the material storage box, and a push rod arranged on the upper end of the push plate, the push rod slides through the upper end of the material storage box, the interior of the material storage box is filled with soapy water, and the soapy water is located below the push plate, the end face shape and size of the push plate are equal to the end face shape and size of the inner wall of the material storage box, and a discharging element is installed between the material storage box and the detection box.

4. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 3 is characterized by: The discharging element includes a mounting groove opened on the upper wall of the detection box, a mounting plate arranged in the mounting groove, a plurality of discharging barrels arranged on the mounting plate, support plates respectively arranged on the upper ends of the inner walls of the corresponding discharging barrels, reset springs respectively arranged on the lower ends of the corresponding support plates, and discharging plates respectively arranged on the lower ends of the corresponding reset springs. The discharging plate is slidably installed on the inner wall of the discharging barrel, the end face shape and size of the discharging plate are equal to the end face shape and size of the inner wall of the discharging barrel, and a one-way tube is arranged between the storage box and the discharging barrel.

5. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 4 is characterized by: The lower ends of the plurality of discharging cylinders are tightly fitted with the upper end of the sliding plate.

6. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 1, characterized in that: The sealing component includes an air outlet interface arranged on the side wall of the detection box, a control block arranged at one end of the air outlet interface, a control valve arranged on the side wall of the control block, and an air outlet pipe arranged between the control block and the air pump.

7. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 6 is characterized by: A sealing sleeve is fixedly installed at the lower end of the detection box, a fixing groove is opened at the lower end of the sealing sleeve, a square ring airbag is fixedly installed in the fixing groove, an inflation tube is fixedly installed on the side wall of the square ring airbag, and a connecting tube is fixedly connected between one end of the inflation tube and the vacuum pump.

8. The auxiliary equipment for ship cabin sealing test based on tightness without sealing the cabin according to claim 7 is characterized by: A deflation pipe is installed on the side wall of the square ring airbag, and a balancing valve for balancing the air pressure inside the detection box is installed on one side of the control block.

Images