Air pressure testing device for inner container of welded heat-insulating gas cylinder

Abstract

The utility model relates to the technical field of gas cylinder inner container gas pressure test, and discloses a welded heat insulation gas cylinder inner container gas pressure test device, a lifting rod is arranged on the upper surface of a gas pressure test box in a penetrating manner, the upper end of the lifting rod is connected with a lifting plate, and fixing rods are symmetrically arranged on the lower surface of the lifting plate; a sleeve is arranged at the lower end of the fixing rod, a placement plate is connected to the lower end of the sleeve, placement holes are formed in the upper surface of the placement plate, air boxes are symmetrically arranged on the upper surface of the lifting plate, an air pump is installed on one side of each air box, an air outlet end of each air pump is connected with an air pipe, and an air pressure meter is arranged outside each air pipe. According to the utility model, through the arrangement of the two groups of placing plates, the air pressure test can be simultaneously carried out on the two welded heat-insulation gas cylinder liners, the test efficiency is effectively improved, and meanwhile, the stability of the welded heat-insulation gas cylinder liners can be ensured by utilizing the movement of the sleeve outside the fixed rod.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cylinder liner pressure testing, in particular to a welded insulated gas cylinder liner pressure testing device. Background Technology

[0002] The inner liner of the welded insulated gas cylinder is the core component of the welded insulated gas cylinder, which is mainly used to store and transport liquid gases, such as liquid oxygen, liquid ammonia, liquid argon, liquid hydrogen, liquid helium, etc. It is made of high-quality stainless steel and is finely processed and polished to ensure that it has sufficient strength and corrosion resistance to withstand the pressure and temperature changes of liquefied natural gas. The inner liner pressure test is a pressure test on the inner liner of the welded insulated gas cylinder to evaluate its ability to withstand internal pressure and sealing performance.

[0003] The Chinese patent discloses a pressure test device for the inner liner of a welded insulated gas cylinder (authorization announcement number CN205861311U). This patented technology realizes an intelligent operation mode through a pressure test main control unit configured on the main control cabinet. The air or nitrogen provided by the compressed air supply device is automatically input into the gas cylinder through the gas pipeline. When the pressure in the gas cylinder reaches the rated pressure of the boost and depressurization valve, the boost and depressurization valve is automatically closed, and the baffle valve is closed by the leak detection main controller to start the pressure holding test. When an abnormal gas leak occurs, the alarm will send an alarm signal in time. The entire pressure test process has a high degree of automation, the human-computer interaction interface is simple and easy to learn, the operation is quick and time-saving, the labor intensity of the operator is reduced, the labor efficiency is improved, and the test operation is stable, safe and reliable.

[0004] However, there are still some shortcomings in this patent. Although this patent can perform air pressure test on the inner liner, it can be seen from the drawings of this patent that this patent cannot perform air pressure test on multiple inner liner at the same time and realize its rapid feeding and unloading, which affects the efficiency of its air pressure test. Therefore, those skilled in the art provide a welded insulated gas cylinder inner liner air pressure test device to solve the problems raised in the above background technology. Contents of utility model

[0005] The purpose of the utility model is to provide a welded insulated gas cylinder liner pressure test device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pressure test device for the inner liner of a welded vacuum insulated gas cylinder, comprising a pressure test chamber and a control display screen arranged on the front surface of the pressure test chamber. A lifting rod penetrates through the upper surface of the pressure test chamber. The upper end of the lifting rod is connected with a lifting plate. Fixed rods are symmetrically arranged on the lower surface of the lifting plate. A sleeve is arranged at the lower end of the fixed rod. The lower end of the sleeve is connected with a placement plate. Placement holes are formed on the upper surface of the placement plate. Air boxes are symmetrically arranged on the upper surface of the lifting plate. An air pump is installed on one side of the air box. The air outlet end of the air pump is connected with an air pipe. A pressure gauge is arranged outside the air pipe.

[0008] As a further scheme of the utility model: Two groups of placement plates are arranged below the lifting plate, and through holes are formed on the upper surface of the placement plate.

[0009] As a further scheme of the utility model: Monitoring probes are also symmetrically arranged on the lower surface of the lifting plate. The output end of the monitoring probe is wirelessly connected to the input end of the control display screen.

[0010] As a further scheme of the utility model: The inner liner of the welded vacuum insulated gas cylinder is arranged inside the placement hole. A fixing groove is formed on the upper surface of the lifting plate. The upper end of the inner liner of the welded vacuum insulated gas cylinder is embedded inside the fixing groove. The end of the air pipe is embedded inside the inner liner of the welded vacuum insulated gas cylinder.

[0011] As a further scheme of the utility model: Eight fixed rods are symmetrically arranged on the lower surface of the lifting plate. The sleeve is slidably arranged outside the fixed rod. A first electric telescopic rod is arranged at the lower end of the fixed rod. The telescopic end of the first electric telescopic rod is connected to the inner end of the sleeve.

[0012] As a further scheme of the utility model: A second electric telescopic rod is also arranged inside the pressure test chamber. The telescopic end of the second electric telescopic rod is connected to the lower end of the lifting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Through the arrangement of two groups of placement plates, the utility model can simultaneously conduct pressure tests on the inner liners of two welded vacuum insulated gas cylinders, effectively improving the test efficiency. At the same time, by using the sleeve to move outside the fixed rod, the position of the placement plate can be adjusted, so that the upper surface of the inner liner of the welded vacuum insulated gas cylinder is in contact with the lower surface of the lifting plate, thereby ensuring the stability of the inner liner of the welded vacuum insulated gas cylinder and facilitating the pressure test on the inner liner of the welded vacuum insulated gas cylinder.

[0015] 2. The utility model can pass the gas inside the gas tank into the inner liner of the welded vacuum insulated gas cylinder through an air pump via a trachea, and the pressure of the passed-in gas can be measured through a pressure gauge. At the same time, the external situation of the inner liner of the welded vacuum insulated gas cylinder can be recorded in real time by using a monitoring probe, so as to conduct a pressure test on the inner liner of the welded vacuum insulated gas cylinder. Meanwhile, the lifting rod can be used to lift the height of the lifting plate for the purpose of rapid discharging, and the practicability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a pressure test device for the inner liner of a welded vacuum insulated gas cylinder;

[0017] Figure 2 It is a schematic structural diagram of the gas tank in a pressure test device for the inner liner of a welded vacuum insulated gas cylinder;

[0018] Figure 3 It is a schematic structural diagram of the lifting plate in a pressure test device for the inner liner of a welded vacuum insulated gas cylinder;

[0019] Figure 4 It is a schematic structural diagram of the placing plate in a pressure test device for the inner liner of a welded vacuum insulated gas cylinder.

[0020] In the figure: 1. Pressure test chamber; 11. Control display screen; 2. Lifting plate; 21. Lifting rod; 22. Fixed groove; 23. Monitoring probe; 3. Gas tank; 31. Air pump; 32. Pressure gauge; 33. Trachea; 4. Placing plate; 41. Placing hole; 42. Sleeve; 43. Fixed rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0022] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0023] It should be noted that, without conflict, the embodiments and the features and technical solutions in the embodiments of the present utility model can be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0026] Embodiment 1:

[0027] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a pneumatic pressure test device for the inner liner of a welded insulated gas cylinder, including a pneumatic pressure test chamber 1 and a control display screen 11 provided on the front surface of the pneumatic pressure test chamber 1. A lifting rod 21 penetrates through the upper surface of the pneumatic pressure test chamber 1. The upper end of the lifting rod 21 is connected to a lifting plate 2. Fixed rods 43 are symmetrically arranged on the lower surface of the lifting plate 2. A sleeve 42 is provided at the lower end of the fixed rod 43. The lower end of the sleeve 42 is connected to a placement plate 4. Placement holes 41 are formed on the upper surface of the placement plate 4. Air tanks 3 are symmetrically arranged on the upper surface of the lifting plate 2. An air pump 31 is installed on one side of the air tank 3. The air outlet end of the air pump 31 is connected to an air pipe 33. A pressure gauge 32 is arranged outside the air pipe 33. This setting makes it convenient to place the inner liner of the welded insulated gas cylinder by using the placement plate 4, and the distance between the placement plate 4 and the lifting plate 2 can be reduced by moving the sleeve 42 outside the fixed rod 43, thereby achieving the purpose of fixing the inner liner of the welded insulated gas cylinder. At the same time, the inner liner of the welded insulated gas cylinder is placed inside the pneumatic pressure test chamber 1, and the pneumatic pressure test is realized by introducing gas and observing the situation of the inner liner of the welded insulated gas cylinder inside the pneumatic pressure test chamber 1.

[0028] Embodiment 2:

[0029] The following further introduces the solution in Embodiment 1 in combination with the specific working mode, as described in detail below:

[0030] As shown in Figure 4 As a preferred embodiment, on the basis of the above method, further, two groups of placement plates 4 are provided below the lifting plate 2, and through holes are formed on the upper surface of the placement plate 4. This setting enables water to pass through the through holes on the placement plate 4, so as to facilitate the purpose of test observation of the inner liner of the welded insulated gas cylinder.

[0031] As shown in Figure 1As shown, as a preferred embodiment, on the basis of the above method, further, monitoring probes 23 are symmetrically arranged on the lower surface of the lifting plate 2. The output end of the monitoring probe 23 is wirelessly connected to the input end of the control display screen 11. This setting uses the monitoring probe 23 to monitor the welded vacuum insulated gas cylinder liner inside the air pressure test chamber 1 in real time, so as to determine whether the welded vacuum insulated gas cylinder liner is deformed and leaking.

[0032] As Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, a welded vacuum insulated gas cylinder liner is arranged inside the placement hole 41. A fixing groove 22 is formed on the upper surface of the lifting plate 2. The upper end of the welded vacuum insulated gas cylinder liner is embedded inside the fixing groove 22. The end of the air pipe 33 is embedded inside the welded vacuum insulated gas cylinder liner. This setting uses the air pipe 33 to connect the welded vacuum insulated gas cylinder liner to the air tank 3, so as to facilitate the introduction of gas into the welded vacuum insulated gas cylinder liner to conduct an air pressure test on the inside of the welded vacuum insulated gas cylinder liner.

[0033] As Figure 2 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, eight fixing rods 43 are symmetrically arranged on the lower surface of the lifting plate 2. The sleeve 42 is slidably arranged outside the fixing rod 43. A first electric telescopic rod is arranged at the lower end of the fixing rod 43. The telescopic end of the first electric telescopic rod is connected to the inner end of the sleeve 42. This setting uses the movement of the sleeve 42 outside the fixing rod 43 to adjust the position of the placement plate 4, so as to quickly position the welded vacuum insulated gas cylinder liner placed on the placement plate 4.

[0034] As Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, a second electric telescopic rod is also arranged inside the air pressure test chamber 1. The telescopic end of the second electric telescopic rod is connected to the lower end of the lifting rod 21. This setting uses the operation of the second electric telescopic rod, which will cause the lifting rod 21 to move, and then the lifting plate 2 can be lifted to take out the welded vacuum insulated gas cylinder liner on the placement plate 4.

[0035] Example 3:

[0036] The solutions in Example 1 and Example 2 will be further introduced below in combination with specific working methods. See the following description for details:

[0037] Specifically, when the internal pressure test device for the welded vacuum insulated gas cylinder is in operation / use: First, place the internal liner of the welded vacuum insulated gas cylinder to be subjected to the pressure test on the placement plate 4. After placement, move the sleeve 42 outside the fixed rod 43, so that the distance between the placement plate 4 and the lifting plate 2 can be reduced, and then the internal liner of the welded vacuum insulated gas cylinder can be positioned. After fixation, seal and connect the end of the air pipe 33 to the internal liner of the welded vacuum insulated gas cylinder. After connection, the lifting of the lifting rod 21 can make the lifting plate 2 move downward, and the internal liner of the welded vacuum insulated gas cylinder can move downward into the internal pressure test chamber 1. There is water inside the pressure test chamber 1. In this way, through the operation of the air pump 31, the air in the air chamber 3 will enter the internal liner of the welded vacuum insulated gas cylinder through the air pipe 33 to realize the internal pressure test of the internal liner of the welded vacuum insulated gas cylinder. At the same time, the monitoring probe 23 can be used to observe whether there are any changes in the internal liner of the welded vacuum insulated gas cylinder during the pressure test, so as to achieve the purpose of efficiently performing the internal pressure test on the internal liner of the welded vacuum insulated gas cylinder. At the same time, during the test, the internal liner of the welded vacuum insulated gas cylinder can be taken out by lifting the lifting rod 21, effectively improving its working efficiency.

[0038] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A pressure test device for the inner liner of a welded insulated gas cylinder, comprising a pressure test box (1) and a control display screen (11) arranged on the front surface of the pressure test box (1), characterized in that: A lifting rod (21) is provided through the upper surface of the air pressure test box (1), the upper end of the lifting rod (21) is connected to a lifting plate (2), a fixing rod (43) is symmetrically provided on the lower surface of the lifting plate (2), a sleeve (42) is provided at the lower end of the fixing rod (43), a placement plate (4) is connected at the lower end of the sleeve (42), a placement hole (41) is provided on the upper surface of the placement plate (4), an air box (3) is symmetrically provided on the upper surface of the lifting plate (2), an air pump (31) is installed on one side of the air box (3), an air outlet end of the air pump (31) is connected to an air pipe (33), and a barometer (32) is provided on the outside of the air pipe (33).

2. A welded insulated gas cylinder liner pressure test device according to claim 1, characterized in that: Two groups of the placement plates (4) are arranged below the lifting plate (2), and through holes are provided on the upper surfaces of the placement plates (4).

3. A welded insulated gas cylinder liner pressure test device according to claim 1, characterized in that: A monitoring probe (23) is also symmetrically arranged on the lower surface of the lifting plate (2), and an output end of the monitoring probe (23) is wirelessly connected to an input end of the control display screen (11).

4. A welded insulated gas cylinder liner pressure test device according to claim 1, characterized in that: A welded insulated gas bottle liner is arranged inside the placement hole (41), a fixing groove (22) is provided on the upper surface of the lifting plate (2), the upper end of the welded insulated gas bottle liner is embedded in the fixing groove (22), and the end of the gas pipe (33) is embedded in the welded insulated gas bottle liner.

5. A welded insulated gas cylinder liner pressure test device according to claim 1, characterized in that: Eight fixed rods (43) are symmetrically arranged on the lower surface of the lifting plate (2); the sleeve (42) is slidably arranged outside the fixed rod (43); a first electric telescopic rod is arranged at the lower end of the fixed rod (43); and the telescopic end of the first electric telescopic rod is connected to the inner end of the sleeve (42).

6. A welded insulated gas cylinder liner pressure test device according to claim 1, characterized in that: A second electric telescopic rod is also provided inside the air pressure test box (1), and the telescopic end of the second electric telescopic rod is connected to the lower end of the lifting rod (21).

Images