Front and rear nitrogen cylinder pressure maintaining experiment device
By designing a front and rear nitrogen cylinder pressure holding experiment device, and using inverted "several" font plates and hydraulic telescopic columns to immerse the nitrogen cylinder in water for pressure holding detection, the problem of high operating cost of nitrogen cylinder pressure holding experiment in the prior art is solved, and the pressure holding detection effect with low cost and simple operation is achieved.
Patent Information
- Application Number
- CN202421513767.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, when conducting pressure-holding experiments on nitrogen cylinders, the operating cost is high, and professional personnel and precision instruments are required, resulting in an increase in cost.
A front and rear nitrogen cylinder pressure-keeping experimental device is designed. By placing the nitrogen cylinder in the inverted "Ji" font plate bracket, the hydraulic telescopic column and hydraulic telescopic column shrinkage drive the inverted "Ji" font plate and the nitrogen cylinder are immersed in the reservoir for pressure-keeping detection.
The overall structure of the device is simple, cheap and easy to operate. It does not require professional personnel. It can significantly reduce the cost of nitrogen cylinder pressure holding experiments, and intuitively judge the pressure relief status of the nitrogen cylinder through the water immersion method.
Smart Images
Figure CN222652470U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nitrogen cylinder pressure maintenance detection, and specifically relates to a front and rear nitrogen cylinder pressure maintenance experimental device. Background Art
[0002] Nitrogen cylinder usually refers to nitrogen spring or nitrogen cylinder, which is an elastic component with high-pressure nitrogen as the working medium. It has the advantages of small size, large elastic force, long stroke, stable operation, precision manufacturing and long service life.
[0003] Nitrogen springs are widely used in the mold industry, such as stamping molds. It can be installed symmetrically in the mold to provide elastic force and assist stamping, and is also commonly known as front and rear nitrogen cylinders.
[0004] After the nitrogen cylinder is produced or repaired, its sealing performance needs to be tested before it can be put into use. The traditional testing method requires the use of precision testing instruments, which is not only expensive to purchase, but also requires professional personnel to operate and maintain during use, which undoubtedly increases the labor cost and the cost of precision instrument testing experiments. A front and rear nitrogen cylinder pressure maintenance test device is proposed. Utility Model Content
[0005] In view of the problem of high operating cost when doing pressure maintenance test on nitrogen cylinder in the prior art, the utility model provides a front and rear nitrogen cylinder pressure maintenance test device, which can place the nitrogen cylinder to be tested in the bracket of the inverted "J" shape plate, fix it through the limit structure, and after the hose A is connected to the nitrogen supply end of the nitrogen cylinder, nitrogen is injected from the nitrogen bottle, and then the hydraulic telescopic column contracts to drive the inverted "J" shape plate and the nitrogen cylinder to be immersed in the water reservoir for pressure maintenance test. The overall structure of this device is simple, low-cost, and easy to operate. It does not require professional personnel, and the pressure relief of the nitrogen cylinder is easy to identify, which can significantly reduce the cost of nitrogen cylinder pressure maintenance test, and effectively solves the problem of high operating cost when doing pressure maintenance test on nitrogen cylinder in the prior art. Its specific technical scheme is as follows:
[0006] A front and rear nitrogen cylinder pressure maintaining experiment device, comprising a reservoir, on the left and right sides of the reservoir are fixedly installed bases, on the upper surfaces of the bases are fixedly installed hydraulic telescopic columns, between the tops of the two hydraulic telescopic columns is fixedly installed an inverted "U" shaped plate, the inverted "U" shaped plate is arranged to be lifted and lowered in the reservoir through the hydraulic telescopic columns, on the upper surface of the inverted "U" shaped plate are provided two troughs for placing nitrogen cylinders, and on the inverted "U" shaped plate is installed a limiting structure for limiting the nitrogen cylinders, behind the reservoir is arranged a nitrogen cylinder, the exhaust end of the nitrogen cylinder is connected with a pressure regulator, the pressure regulator, the exhaust end of the pressure regulator is connected with a hose A, the exhaust end of the hose A is connected with a three-way air supply pipe, the three-way air supply pipe is fixedly installed on the upper surface of the reservoir, and the exhaust ends of the three-way air supply pipe are respectively connected with control valves, the other ends of the control valves are respectively connected with hoses B with connectors, and the hoses B are used for connecting the nitrogen supply ends of the nitrogen cylinders.
[0007] In the above technical solution, the limiting structure includes a threaded rod fixedly installed on the inverted "U" shaped plate, a pressing plate is sleeved on the outer side of the threaded rod, on the upper surfaces of both ends of the pressing plate are provided socket openings, a butterfly nut is screwed on the outer surface of the threaded rod, and the lower surface of the butterfly nut is attached to the upper surface of the pressing plate;
[0008] In the above technical solution, a viewing window is penetrated and opened on the front surface of the reservoir, and a transparent glass is hermetically installed in the viewing window through glass glue.
[0009] In the above technical solution, a plurality of through openings are penetrated and opened on the upper surface of the inverted "U" shaped plate;
[0010] In the above technical solution, a storage rack is fixedly installed on the rear surface of the reservoir, and the nitrogen cylinder is placed in the storage rack.
[0011] A front and rear nitrogen cylinder pressure maintaining experiment device of the present utility model, compared with the prior art, has the beneficial effects that:
[0012] The present utility model can place the nitrogen cylinder to be detected in the trough of the inverted "U" shaped plate, fix it through the limiting structure, after connecting the hose A to the nitrogen supply end of the nitrogen cylinder, inject nitrogen from the nitrogen cylinder, and then drive the inverted "U" shaped plate and the nitrogen cylinder to immerse in the reservoir through the contraction of the hydraulic telescopic column for pressure maintaining detection. The overall structure of this device is simple, the cost is low, the operation is simple, no professional personnel are required, and the pressure relief of the nitrogen cylinder is easy to identify, which can significantly reduce the cost of the nitrogen cylinder pressure maintaining experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional front view structural schematic diagram of the present utility model.
[0014] Figure 2 It is a three-dimensional rear view structural schematic diagram of the present utility model.
[0015] Figure 3 It is a three-dimensional top view structural schematic diagram of the utility model.
[0016] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model.
[0017] Figure 1-4 Among them: 1. water reservoir; 11. base; 12. observation window; 121. transparent glass; 2. hydraulic telescopic column; 3. inverted "J"-shaped plate; 31. bracket; 32. through-port; 4. limit structure; 41. threaded rod; 42. pressure plate; 421. sleeve; 43. butterfly nut; 5. nitrogen bottle; 51. pressure regulator; 52. hose A; 6. three-way air supply pipe; 61. control valve; 62. hose B; 8. storage rack. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-Figure 4 , the utility model provides a technical solution:
[0020] A front and rear nitrogen cylinder pressure-maintaining experimental device comprises a water reservoir 1, a base 11 is fixedly installed on the left and right sides of the water reservoir 1, a hydraulic telescopic column 2 is fixedly installed on the upper surface of the base 11, an inverted "J"-shaped plate 3 is fixedly installed between the tops of the two hydraulic telescopic columns 2, the inverted "J"-shaped plate 3 is lifted and arranged in the water reservoir 1 by the hydraulic telescopic column 2, two brackets 31 for placing the nitrogen cylinder are provided on the upper surface of the inverted "J"-shaped plate 3, and a bracket 31 for limiting the position of the nitrogen cylinder is installed on the inverted "J"-shaped plate 3. The limiting structure 4, a nitrogen bottle 5 is arranged at the rear side of the water reservoir 1, the exhaust end of the nitrogen bottle 5 is connected to a pressure regulator 51, the pressure regulator 51, the exhaust end of the pressure regulator 51 is connected to a hose A52, the exhaust end of the hose A52 is connected to a three-way air supply pipe 6, the three-way air supply pipe 6 is fixedly installed on the upper surface of the water reservoir 1, and the exhaust ends of the three-way air supply pipe 6 are connected to control valves 61, and the other ends of the control valves 61 are respectively connected to hoses B62 with connectors, and the hoses B62 are used to connect the nitrogen supply end of the nitrogen cylinder;
[0021] When using, combine Figure 4 and Figure 3As shown, firstly, the front and rear nitrogen cylinders required for the pressure holding experiment are respectively placed in the bracket 31 of the inverted "J" shape plate 3, and then, the nitrogen cylinder is fixed in the bracket 31 by using the limiting structure 4, and the connecting head of the hose B62 is screwed to the nitrogen supply end of the nitrogen cylinder, and then the pressure regulator 51 is adjusted to a suitable pressure, and then the nitrogen bottle 5 and the control valve 61 are opened, and the nitrogen is supplied to the corresponding nitrogen cylinder through the hose A52, the three-way air supply pipe 6 and the hose B62. After supply, the inverted "J" shape plate 3 is driven downward by the hydraulic telescopic column 2, so that the nitrogen cylinder filled with nitrogen is immersed in the water of the water reservoir 1, and kept for at least one minute, and whether there is any bubble escaping from the surface of the nitrogen cylinder. If bubbles emerge continuously or bubbles still appear after the bubbles in the fixed position are wiped off, it can be determined that the nitrogen cylinder has a leakage problem and the pressure holding is unqualified; if no bubbles escape, it means that the pressure holding performance of the nitrogen cylinder is good;
[0022] The principle of this immersion method is that when there is a leak in the nitrogen cylinder under the test pressure, the gas will escape from the leak into the water to form bubbles. By observing the generation of bubbles, it is possible to intuitively judge whether the nitrogen cylinder can maintain pressure. It does not require extremely professional personnel to operate, which can reduce the cost of labor and precision instruments for pressure holding experiments.
[0023] It should be noted that if Figure 4 As shown, the limiting structure 4 includes a threaded rod 41 fixedly mounted on the inverted "J"-shaped plate 3, a pressing plate 42 is sleeved on the outer side of the threaded rod 41, and sleeves 421 are provided on the upper surfaces of both ends of the pressing plate 42. A butterfly nut 43 is screwed and mounted on the outer surface of the threaded rod 41, and the lower surface of the butterfly nut 43 is in contact with the upper surface of the pressing plate 42;
[0024] When the limiting structure 4 is used to fix the nitrogen cylinder, the pressing plate 42 is first sleeved on the outside of the threaded rod 41, and the sleeves 421 at both ends of the pressing plate 42 are sleeved on the top of the corresponding nitrogen cylinder. Then, the butterfly nut 43 is screwed to the threaded rod 41, and the butterfly nut 43 is tightened so that its lower surface is pressed against the upper surface of the pressing plate 42. At this time, the nitrogen cylinder is fixed in the bracket 31 under the pressure of the pressing plate 42.
[0025] During the inspection, in order to observe whether the nitrogen cylinder is leaking from the right angle, such as Figure 1 As shown, an observation window 12 is provided through the front surface of the water reservoir 1, and a transparent glass 121 is installed in the observation window 12 through glass glue sealing. The situation in the water reservoir 1 can be observed from a better angle through the transparent glass 121.
[0026] In addition, in order to reduce the obstruction of the inverted "J"-shaped plate 3 when moving up and down in the reservoir 1, the Figure 3 and Figure 4 As shown, a plurality of openings 32 are provided through the upper surface of the inverted "J"-shaped plate 3. The openings 32 can reduce the resistance when the plate moves up and down in water.
[0027] Specifically, if Figure 2 As shown, a storage rack 8 is fixedly installed on the rear surface of the water reservoir 1, and the nitrogen cylinder 5 is placed in the storage rack 8 to prevent the nitrogen cylinder 5 from tipping over easily.
Claims
1. A front and rear nitrogen cylinder pressure-maintaining experimental device, comprising a water reservoir (1), characterized in that: Bases (11) are fixedly installed on the left and right sides of the water reservoir (1), hydraulic telescopic columns (2) are fixedly installed on the upper surfaces of the bases (11), an inverted "J"-shaped plate (3) is fixedly installed between the top ends of the two hydraulic telescopic columns (2), the inverted "J"-shaped plate (3) is lifted and arranged in the water reservoir (1) by the hydraulic telescopic columns (2), two brackets (31) for placing nitrogen cylinders are provided on the upper surface of the inverted "J"-shaped plate (3), and a limiting structure (4) for limiting the position of the nitrogen cylinder is installed on the inverted "J"-shaped plate (3); A nitrogen bottle (5) is arranged at the rear side of the water reservoir (1), the exhaust end of the nitrogen bottle (5) is connected to a pressure regulator (51), the exhaust end of the pressure regulator (51) is connected to a hose A (52), the exhaust end of the hose A (52) is connected to a three-way air supply pipe (6), the three-way air supply pipe (6) is fixedly installed on the upper surface of the water reservoir (1), and the exhaust ends of the three-way air supply pipe (6) are connected to control valves (61), and the other ends of the control valves (61) are respectively connected to hoses B (62) with connectors, and the hoses B (62) are used to connect to the nitrogen supply end of the nitrogen cylinder.
2. The front and rear nitrogen cylinder pressure maintaining experimental device according to claim 1, characterized in that: The limiting structure (4) comprises a threaded rod (41) fixedly mounted on an inverted "J"-shaped plate (3); a pressure plate (42) is sleeved on the outer side of the threaded rod (41); sleeve openings (421) are provided on the upper surfaces of both ends of the pressure plate (42); a butterfly nut (43) is threadedly mounted on the outer surface of the threaded rod (41); and the lower surface of the butterfly nut (43) is in contact with the upper surface of the pressure plate (42).
3. A front and rear nitrogen cylinder pressure-maintaining experimental device according to claim 1 or 2, characterized in that: An observation window (12) is provided through the front surface of the water reservoir (1), and transparent glass (121) is installed in the observation window (12) by sealing with glass glue.
4. The front and rear nitrogen cylinder pressure-maintaining experimental device according to claim 1, characterized in that: The upper surface of the inverted "J"-shaped plate (3) is provided with a plurality of through openings (32).
5. The front and rear nitrogen cylinder pressure maintaining experimental device according to claim 1, characterized in that: A storage rack (8) is fixedly mounted on the rear surface of the water reservoir (1), and the nitrogen cylinder (5) is placed in the storage rack (8).