Pressure vessel pipeline surface strength detection equipment

Abstract

The utility model relates to pressure vessel pipeline surface strength detection equipment which comprises a base, an internal detection mechanism is arranged on the left side of the base, four vertical rods are fixed at the top end of the base, a transverse plate is fixed at the top ends of the vertical rods, a lifting mechanism is arranged on the transverse plate, an upper pressing plate is arranged at the bottom end of the lifting mechanism, and a lower pressing plate is arranged at the bottom end of the upper pressing plate. A lower pressing plate is fixed to the top end of the base, and a pipeline is placed above the lower pressing plate; and the internal detection mechanism comprises an inflator pump placed on the left side of the base. According to the pressure vessel pipeline surface strength detection equipment, an internal detection mechanism is arranged on the left side of the base, and the inner wall of a pipeline is pressurized by inflating an inflatable bag, so that the strength of the inner surface of the pipeline is detected, and meanwhile, inconvenience caused by water pressure detection is avoided; the upper pressing plate is stressed more stably, and the problem that the upper pressing plate is stressed unevenly due to the fact that a single hydraulic cylinder is used for pushing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessels, in particular to a pressure vessel pipeline surface strength detection device. Background Art

[0002] A pressure vessel refers to a closed device that holds gas or liquid and bears a certain pressure. Pressure vessels are divided into reaction vessels, heat transfer vessels, separation vessels and storage and transportation vessels according to their uses. Pressure vessels are mainly used to complete the physical and chemical reactions of working media, which are called reaction vessels. Leakage and explosion may occur during use. The power generated by leakage and explosion is very strong and can cause serious consequences. Therefore, pressure vessels are specified as special equipment, and there are strict requirements for their production and use. During the production process of pressure vessels, the surface strength of the pipeline needs to be tested.

[0003] For example, a Chinese patent (CN 219265923 U) discloses a pipeline strength detection device for pipeline strength test, including a pad, four reinforcing rods are fixedly inserted inside the pad, and the arc surfaces of the four reinforcing rods are slidably sleeved with a pressure plate. The surface of the pressure plate is provided with a shielding structure, and the shielding structure includes a connecting frame. The surface of the connecting frame is slidably connected to the pressure plate. The cross-section of the connecting frame is "U"-shaped, and two square grooves are provided on the surface of the connecting frame. The inner walls of the square grooves are slidably connected with rectangular blocks, and the ends of the two rectangular blocks close to each other are fixedly connected to the pressure plate. The internal threads of the connecting frame are connected with four bayonet pins, and the bayonet pins are located on the surface of the pressure plate. The utility model solves the problem in the prior art that the limiting rod on the pipeline strength detection device is easy to accidentally injure the staff when the staff carries the pipeline strength detection device to move.

[0004] The above scheme also has the following technical defects: the above scheme is not convenient for detecting the inside of the pipeline. When the water pressure inside the pipeline is high and the pipeline's ability to withstand the water pressure is weak, the pipeline may burst under the action of the water pressure, causing casualties and economic losses. Based on this, a pressure vessel pipeline surface strength detection device is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure vessel pipeline surface strength testing device, which has the advantages of conveniently testing the inner surface strength of the pipeline, and solves the problem that the inner surface strength of the pipeline is inconvenient to test.

[0006] To achieve the above object, the utility model provides the following technical solutions: a pressure vessel pipeline surface strength testing device, comprising a base, an internal testing mechanism is provided on the left side of the base, four vertical rods are fixed to the top of the base, a horizontal plate is fixed to the top of the vertical rods, a lifting mechanism is provided on the horizontal plate, an upper pressing plate is provided on the bottom of the lifting mechanism, a lower pressing plate is fixed to the top of the base, and a pipeline is placed above the lower pressing plate;

[0007] The internal detection mechanism includes an air pump placed on the left side of the base, a valve is fixed to the right end of the air pump, a hose is fixed to the right end of the valve, an inflation joint is fixed to the end of the hose away from the valve, an inflation bag is fixed to the right end of the inflation joint, and the internal detection mechanism also includes a first rubber cover threadedly connected to the left side of the pipe and a second rubber cover on the right side of the pipe.

[0008] Furthermore, the lifting mechanism includes a motor fixed at the top of the horizontal plate, a first screw is fixed to the output shaft of the motor, a transmission mechanism is provided on the outer surface of the first screw, and the lifting mechanism also includes a second screw rotatably connected to the bottom end of the horizontal plate, a movable plate is threadedly connected to the outer surfaces of the first screw and the second screw, and a fixed rod is fixed to the bottom end of the movable plate.

[0009] Furthermore, a through hole is provided inside the first rubber cover, and the outer surface of the inflation joint is fixed to the inner wall of the through hole.

[0010] Furthermore, the volume of the inflatable bag after being inflated is larger than the volume inside the pipeline, and the bottom ends of the first screw and the second screw are both fixed with limiting blocks.

[0011] Furthermore, the transmission mechanism includes a driving wheel fixed to the outer surface of the first screw, and the transmission mechanism also includes a driven wheel fixed to the outer surface of the second screw, and a transmission belt is connected between the outer surfaces of the driving wheel and the driven wheel.

[0012] Furthermore, four circular holes are formed around the movable plate, and the vertical rods slide in the circular holes.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The pressure vessel pipeline surface strength testing equipment has an internal testing mechanism on the left side of the base, and utilizes the inflation of the air bag to increase the pressure on the inner wall of the pipeline, thereby realizing strength testing of the inner surface of the pipeline and avoiding the inconvenience of using water pressure testing. A lifting mechanism is provided on the horizontal plate, so that the force on the upper pressure plate is more stable, avoiding the problem of uneven force on the upper pressure plate caused by pushing with a single hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural diagram of the internal detection mechanism of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the lifting mechanism of the utility model.

[0018] In the figure: 1 base, 2 internal detection mechanism, 201 air pump, 202 valve, 203 hose, 204 air connector, 205 air bag, 206 first rubber cover, 207 second rubber cover, 3 vertical rods, 4 horizontal plates, 5 lifting mechanism, 501 motor, 502 first screw rod, 503 transmission mechanism, 504 second screw rod, 505 moving plate, 506 fixed rod, 6 upper pressure plate, 7 lower pressure plate, 8 pipeline. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1 A pressure vessel pipeline surface strength detection device in this embodiment includes a base 1, an internal detection mechanism 2 is provided on the left side of the base 1, four vertical rods 3 are fixed to the top of the base 1, a horizontal plate 4 is fixed to the top of the vertical rods 3, a lifting mechanism 5 is provided on the horizontal plate 4, an upper pressure plate 6 is provided at the bottom end of the lifting mechanism 5, a lower pressure plate 7 is fixed to the top of the base 1, and a pipeline 8 is placed above the lower pressure plate 7.

[0021] In this embodiment, the internal detection mechanism 2 is used to detect the strength of the inner wall of the pipe 8, and the lifting mechanism 5 is used to drive the upper pressure plate 6 to squeeze the outside of the pipe 8. The upper pressure plate 6 and the lower pressure plate 7 are used together to fix the pipe 8.

[0022] See also Figure 1 and Figure 2In order to conveniently detect the strength inside the pipeline 8, the internal detection mechanism 2 in this embodiment includes an air pump 201 placed on the left side of the base 1, a valve 202 is fixed to the right end of the air pump 201, a hose 203 is fixed to the right end of the valve 202, an air connector 204 is fixed to the end of the hose 203 away from the valve 202, an air bag 205 is fixed to the right end of the air connector 204, and the volume of the air bag 205 after inflation is greater than the volume inside the pipeline 8. The internal detection mechanism 2 also includes a first rubber cover 206 threadedly connected to the left side of the pipeline 8 and a second rubber cover 207 on the right side of the pipeline 8. A through hole is opened inside the first rubber cover 206, and the outer surface of the air connector 204 is fixed to the inner wall of the through hole.

[0023] The internal detection mechanism 2 in this embodiment inflates the inflatable bag 205 through the inflatable pump 201, the valve 202 is used to control the inlet and outlet of the gas, the hose 203 is used to drain the gas, the inflatable bag 205 is used to squeeze the inner wall of the pipe 8 after expansion, and the first rubber cover 206 and the second rubber cover 207 are used to facilitate the sealing of the pipe 8.

[0024] It should be noted that, since the hose 203 can be bent, it is convenient to remove the inflatable bag 205 from the pipeline 8.

[0025] See also Figure 1 and Figure 3 In order to make the force on the upper pressure plate 6 more uniform, the lifting mechanism 5 in this embodiment includes a motor 501 fixed to the top of the horizontal plate 4, the output shaft of the motor 501 is fixed with a first screw 502, the outer surface of the first screw 502 is provided with a transmission mechanism 503, the lifting mechanism 5 also includes a second screw 504 rotatably connected to the bottom end of the horizontal plate 4, the bottom ends of the first screw 502 and the second screw 504 are both fixed with limited blocks, the transmission mechanism 503 includes a driving wheel fixed to the outer surface of the first screw 502, the transmission mechanism 503 also includes a driven wheel fixed to the outer surface of the second screw 504, the outer surfaces of the driving wheel and the driven wheel are connected with a transmission belt, the outer surfaces of the first screw 502 and the second screw 504 are threadedly connected with a moving plate 505, the bottom end of the moving plate 505 is fixed with a fixed rod 506, and four circular holes are opened around the moving plate 505, and the vertical rod 3 slides in the circular holes.

[0026] The lifting mechanism 5 in this embodiment drives the first screw 502 to rotate through the motor 501, and the first screw 502 can drive the transmission mechanism 503 to operate. The transmission mechanism 503 is used to drive the second screw 504 to rotate. The first screw 502 and the second screw 504 work together to drive the movable plate 505 to move up and down. The movable plate 505 is used to drive the fixed rod 506 and the upper pressure plate 6 to move downward, and at the same time can push the upper pressure plate 6 to squeeze the pipe 8.

[0027] It should be noted that the rotation of the first screw 502 can drive the driving wheel to rotate, the driving wheel can drive the transmission belt to move, the transmission belt drives the driven wheel to rotate, and then the driven wheel can drive the second screw 504 to rotate, and the vertical rod 3 can be used to limit the movable plate 505.

[0028] It can be understood that the control method of the present application is controlled by a controller, the control circuit of the controller can be implemented by simple programming by technicians in this field, the provision of power is also common knowledge in this field, and the present application is mainly used to protect mechanical devices, so the present application will no longer explain the control method and circuit connection in detail.

[0029] The working principle of the above embodiment is:

[0030] The pipe 8 is placed above the lower pressure plate 7, and the motor 501 is started. The output shaft of the motor 501 rotates to drive the first screw 502 to rotate, and the first screw 502 drives the driving wheel to rotate, and the driving wheel drives the transmission belt to transmit, and the transmission belt drives the driven wheel and the second screw 504 to rotate, and the first screw 502 and the second screw 504 drive the movable plate 505 to move downward together, and the movable plate 505 drives the fixed rod 506 and the upper pressure plate 6 to move downward together, and the upper pressure plate 6 squeezes the pipe 8 to fix it, and then the inflatable bag 205 is placed inside the pipe 8, and the first rubber cover 206 and the second rubber cover 207 are screwed on, and the air pump 201 is started to inflate the inflatable bag 205, and the gas flows into the inflatable bag 205 after passing through the hose 203, and the inflatable bag 205 expands to squeeze the inner wall of the pipe 8, thereby performing a strength test on the inner wall of the pipe 8.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure vessel pipeline surface strength testing device, comprising a base (1), characterized in that: An internal detection mechanism (2) is provided on the left side of the base (1); four vertical rods (3) are fixed on the top of the base (1); a horizontal plate (4) is fixed on the top of the vertical rods (3); a lifting mechanism (5) is provided on the horizontal plate (4); an upper pressure plate (6) is provided at the bottom end of the lifting mechanism (5); a lower pressure plate (7) is fixed on the top of the base (1); a pipe (8) is placed above the lower pressure plate (7); The internal detection mechanism (2) comprises an air pump (201) placed on the left side of the base (1); a valve (202) is fixed to the right end of the air pump (201); a hose (203) is fixed to the right end of the valve (202); an air charging connector (204) is fixed to the end of the hose (203) away from the valve (202); an air bag (205) is fixed to the right end of the air charging connector (204); and the internal detection mechanism (2) further comprises a first rubber cover (206) threadedly connected to the left side of the pipe (8) and a second rubber cover (207) on the right side of the pipe (8).

2. The pressure vessel pipeline surface strength testing device according to claim 1 is characterized in that: The lifting mechanism (5) comprises a motor (501) fixed at the top end of the horizontal plate (4), a first screw rod (502) being fixed to the output shaft of the motor (501), a transmission mechanism (503) being provided on the outer surface of the first screw rod (502), and the lifting mechanism (5) further comprises a second screw rod (504) rotatably connected to the bottom end of the horizontal plate (4), a movable plate (505) being threadedly connected to the outer surfaces of the first screw rod (502) and the second screw rod (504), and a fixed rod (506) being fixed to the bottom end of the movable plate (505).

3. The pressure vessel pipeline surface strength testing device according to claim 1, characterized in that: A through hole is provided inside the first rubber cover (206), and the outer surface of the inflation joint (204) is fixed to the inner wall of the through hole.

4. The pressure vessel pipeline surface strength testing device according to claim 1, characterized in that: The volume of the inflatable bag (205) after being inflated is larger than the volume inside the pipe (8), and the bottom ends of the first screw (502) and the second screw (504) are both fixed with limit blocks.

5. The pressure vessel pipeline surface strength testing device according to claim 2, characterized in that: The transmission mechanism (503) comprises a driving wheel fixed to the outer surface of the first screw rod (502), and the transmission mechanism (503) further comprises a driven wheel fixed to the outer surface of the second screw rod (504), and a transmission belt is connected between the outer surfaces of the driving wheel and the driven wheel.

6. The pressure vessel pipe surface strength testing device according to claim 2, characterized in that: Four circular holes are formed around the movable plate (505), and the vertical rods (3) slide in the circular holes.

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