Furnace tube air tightness test equipment

Abstract

The utility model belongs to the technical field of air tightness test, and particularly relates to furnace tube air tightness test equipment. Comprising a lifting module vertically mounted at the top of a rack; the four corners of the pipe bearing frame are movably connected to the lifting frame at the driving end of the lifting module through turnbuckles, and bearing rollers are arranged on the pipe bearing frame and used for bearing the furnace pipe; the clamping module is mounted on the lifting frame and is used for clamping and sealing the two ports of the supported furnace tube; and the water tank is arranged at the bottom of the rack and is used for carrying out an immersion watertight test on the furnace tube with the sealed port. The whole working process is fully automatic, the working efficiency is improved, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to airtightness test technical field, especially relate to a furnace tube airtightness test equipment. BACKGROUND

[0002] In the furnace tube production process, how is the pipe section casting quality, such as crack and porosity, need to be tested to obtain the result, and air tightness test is one of the test methods. Commonly used air tightness test method is to block the two ports of the pipe section with a plug, fill the pipe with air, then pour soap water on the outer wall of the pipe with a plastic bottle, visually check for air leakage (bubbles), after checking the upper surface and two side surfaces, the bottom surface of the furnace tube also needs to be checked with a mirror, which is not only low in efficiency, but also difficult to find defects on the lower surface of the pipe section and the opposite side of the tester.

[0003] Therefore, a furnace tube airtightness test equipment is designed to solve the above problems of low detection efficiency and high labor intensity of workers. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a furnace tube airtightness test equipment, which automatically operates the whole work process, improves work efficiency and reduces labor intensity of workers.

[0005] To solve the above technical problems, the utility model provides a furnace tube airtightness test equipment, which comprises:

[0006] The lifting module is vertically installed on the top of the rack.

[0007] The pipe support frame is movably connected to the lifting frame of the driving end of the lifting module through basket screws at four corners, and a supporting roller is arranged on the pipe support frame to support the furnace tube.

[0008] The clamping module is installed on the lifting frame to clamp and seal the two ports of the supported furnace tube.

[0009] The water tank is arranged at the bottom of the rack to conduct water immersion test on the port-sealed furnace tube.

[0010] Preferably, the lifting module comprises a lifting oil cylinder and a lifting frame, and two lifting oil cylinders are linearly installed on the top of the rack, and the driving end of the lifting oil cylinder is provided with the lifting frame.

[0011] Preferably, the clamping module includes: a mounting base, clamping cylinders, a sliding plate, a linear guide rail, and a sealing disc; the mounting base is mounted on the lifting frame, the two clamping cylinders are symmetrically and movably mounted on the mounting base in a figure-eight shape, the driving end of the clamping cylinders is movably connected to the sliding plate, the two sliding plates are symmetrically slidably fitted onto the linear guide rail, the linear guide rail is symmetrically mounted on the lifting frame, and the lower end of the sliding plate also includes the sealing disc for sealing the two ends of the furnace tube.

[0012] Preferably, it also includes a pressure gauge and an air inlet pipe, wherein the pressure gauge and the air inlet pipe are respectively installed on the sealing discs connected to the two ends of the furnace tube, and are used to realize pressure monitoring and compressed air introduction, respectively.

[0013] Preferably, the sealing disc also includes a sealing gasket.

[0014] Preferably, the support roller has a tapered roller structure.

[0015] Preferably, it also includes an unloading module, which includes: an unloading cylinder, an unloading plate, and a chain; two unloading cylinders are vertically and movably mounted on the lifting frame, the drive end of the unloading cylinder is connected to the unloading plate through the chain, the other end of the unloading plate is movably connected to the pipe support frame, and the two unloading plates are close to the support roller and arranged parallel to the support roller.

[0016] Preferably, it also includes a feeding module, which includes a feeding cylinder, a feeding plate, and a conveying roller assembly; the feeding cylinder is vertically mounted on the conveying roller assembly, the driving end of the feeding cylinder is movably connected to the feeding plate, the other end of the feeding plate is movably connected to the frame of the conveying roller assembly, and the feeding plate and the conveying rollers of the conveying roller assembly are arranged at an angle.

[0017] Preferably, it also includes a waterproof sensor switch, which is installed on the pipe support.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] This invention employs a method of immersing the entire furnace tube in a water tank. First, the two ends of the tube are sealed using a clamping module. Compressed air is then introduced into the tube, and the entire furnace tube is placed in the water tank. If any defect (air leakage) occurs, water bubbles will continuously rise from the tank, allowing inspectors to quickly identify the defect at a glance. The entire workflow is fully automated, improving work efficiency and reducing the labor intensity of workers. Attached Figure Description

[0020] Fig. 1 This is a structural diagram of a furnace tube airtightness testing device according to the present invention.

[0021] Fig. 2 This is a structural diagram of the water tank installation in this utility model.

[0022] Fig. 3 This is a structural diagram of the lifting module and clamping module in this utility model.

[0023] Fig. 4 This is a structural diagram of the lifting frame and the pipe support frame in this utility model.

[0024] Fig. 5 This is a structural diagram of the clamping module in this utility model.

[0025] In the diagram: 1-Lifting module, 11-Lifting cylinder, 12-Lifting frame, 2-Pipe support frame, 21-Tube screw, 22-Supporting roller, 3-Clamping module, 31-Mounting base, 32-Clamping cylinder, 33-Slide plate, 34-Linear guide rail, 35-Sealing disc, 36-Pressure gauge, 37-Air inlet pipe, 4-Water tank, 5-Unloading module, 51-Unloading cylinder, 52-Unloading plate, 53-Chain, 6-Loading module, 61-Loading cylinder, 62-Loading plate, 63-Transfer roller group. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0027] like Figs. 1-5 As shown, this utility model embodiment provides a furnace tube airtightness testing device, including:

[0028] Lifting module 1 is vertically installed on the top of the frame;

[0029] The pipe support frame 2 is movably connected to the lifting frame 12 at the drive end of the lifting module 1 by turnbuckles 21 at its four corners, and the pipe support frame 2 is provided with support rollers 22 for supporting the furnace tubes.

[0030] The clamping module 3 is installed on the lifting frame 12 and is used to clamp and seal the two ends of the supported furnace tube.

[0031] Water tank 4, located at the bottom of the frame, is used to conduct an immersion watertight test on the furnace tubes with sealed ports.

[0032] The lifting module 1 includes: a lifting cylinder 11 and a lifting frame 12; two lifting cylinders 11 are linearly mounted on the top of the frame, and the lifting frame 12 is provided at the drive end of the lifting cylinder 11.

[0033] The clamping module 3 includes: a mounting base 31, clamping cylinders 32, a sliding plate 33, a linear guide rail 34, and a sealing disc 35. The mounting base 31 is mounted on the lifting frame 12. The two clamping cylinders 32 are symmetrically and movablely mounted on the mounting base 31 in a figure-eight shape. The driving end of the clamping cylinders 32 is movably connected to the sliding plate 33. The two sliding plates 33 are symmetrically slidably sleeved on the linear guide rail 34. The linear guide rail 34 is symmetrically mounted on the lifting frame 12. The lower end of the sliding plate 33 also includes a sealing disc 35 for sealing the two ends of the furnace tube.

[0034] It also includes a pressure gauge 36 and an air inlet pipe 37, which are respectively installed on the sealing discs 35 connected to the two ends of the furnace tube, and are used to realize pressure monitoring and the introduction of compressed air.

[0035] The sealing disc 35 also includes a sealing gasket.

[0036] Preferably, the support roller 22 has a conical roller structure.

[0037] It also includes an unloading module 5, which includes an unloading cylinder 51, an unloading plate 52, and a chain 53. Two unloading cylinders 51 are vertically and movably mounted on the lifting frame 12. The driving end of the unloading cylinder 51 is connected to the unloading plate 52 through the chain 53. The other end of the unloading plate 52 is movably connected to the pipe support frame 2. The two unloading plates 52 are close to the support roller 22 and are arranged parallel to the support roller 22.

[0038] It also includes a feeding module 6, which includes a feeding cylinder 61, a feeding plate 62, and a conveying roller group 63. The feeding cylinder 61 is vertically mounted on the conveying roller group 63. The driving end of the feeding cylinder 61 is movably connected to the feeding plate 62, and the other end of the feeding plate 62 is movably connected to the frame of the conveying roller group 63. The feeding plate 62 and the conveying rollers of the conveying roller group 63 are arranged at an angle.

[0039] It also includes a waterproof sensor switch, which is installed on the pipe support 2.

[0040] This equipment uses a PLC controller to control each actuator according to a preset program: the furnace tube section to be inspected is conveyed from the previous process to this equipment via the conveyor roller group 63. The section is then flipped into the support frame 2 using a feeding cylinder 61 mounted on the conveyor roller group 63, which drives the feeding plate 62. The section is then clamped using a clamping cylinder 32 to seal both ends. Compressed air is then injected into the section. The section is then lowered using a lifting cylinder 11, which lowers the lifting frame 12 and the support frame 2 along with the furnace tube section into the water tank 4. After visual inspection, the inspector presses a foot switch, causing the lifting frame 12 and the support frame 2, along with the section, to rise until they emerge from the water surface, expelling the compressed air from the section. Finally, the section is flipped out of the support frame 2 using a unloading cylinder 51 mounted on the lifting frame 12, which drives the unloading plate 52.

[0041] The present invention specifically includes the following usage process:

[0042] The furnace tube is conveyed from the previous process to this equipment via a separate production line device, conveyor roller assembly 63. Two feeding plates 62 on the conveyor roller assembly 63, under the action of two feeding cylinders 61, flip the furnace tube onto the support frame 2 of this equipment. A waterproof sensor switch mounted on the support frame 2 detects the furnace tube and sends a signal to the PLC, initiating the operation of this equipment. The clamping module 3 operates first: the clamping cylinder 32 drives two sealing discs 35 to slide along a straight guide rail via a sliding plate 33, clamping the furnace tube from both ends inwards and sealing both ends. Sealing gaskets are attached to the two sealing discs 35 for sealing purposes. When the clamping force of the clamping module 3 reaches the set value, the pressure switch on the hydraulic system activates, and compressed air enters the furnace tube through the air inlet pipe 37 on the back of the sealing disc 35 and the center hole of the sealing disc 35. Simultaneously, the lifting cylinder 11 activates, causing the entire lifting frame 12 and support frame 2, along with the furnace tube, to descend and immerse themselves in the water tank 4 at the bottom of the machine frame. The inspectors began a visual inspection of the furnace tubes in the water. After the inspection, the foot switch was pressed, causing the lifting cylinder 11 to rise, raising the lifting frame 12 and the tube support 2 along with the furnace tubes out of the water. Once the inductive switch on the frame detected the furnace tubes emerging from the water, the unloading cylinder 51 activated, driving the unloading plate 52 to flip the furnace tubes out of the equipment, thus completing the airtightness test. The entire work cycle described above is automatically controlled by a PLC, increasing equipment reliability, improving work efficiency, and reducing the labor intensity of workers.

[0043] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A furnace tube airtightness testing device, characterized in that, include: The lifting module (1) is vertically installed on the top of the frame; The pipe support frame (2) is movably connected to the lifting frame (12) at the drive end of the lifting module (1) by turnbuckles (21) at its four corners, and the pipe support frame (2) is provided with support rollers (22) for supporting the furnace tubes; The clamping module (3) is installed on the lifting frame (12) and is used to clamp and seal the two ends of the supported furnace tube. A water tank (4) is installed at the bottom of the frame and is used to conduct an immersion watertight test on the furnace tubes with sealed ports.

2. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, The lifting module (1) includes: a lifting cylinder (11) and a lifting frame (12); two lifting cylinders (11) are linearly installed on the top of the frame, and the lifting frame (12) is provided at the driving end of the lifting cylinder (11).

3. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, The clamping module (3) includes: a mounting base (31), a clamping cylinder (32), a sliding plate (33), a linear guide rail (34), and a sealing disc (35); the mounting base (31) is mounted on the lifting frame (12), the two clamping cylinders (32) are symmetrically and movablely mounted on the mounting base (31) in a figure-eight shape, the driving end of the clamping cylinder (32) is movably connected to the sliding plate (33), the two sliding plates (33) are symmetrically slidably sleeved on the linear guide rail (34), the linear guide rail (34) is symmetrically mounted on the lifting frame (12), and the lower end of the sliding plate (33) also includes the sealing disc (35) for sealing the two ends of the furnace tube.

4. The furnace tube airtightness testing equipment as described in claim 3, characterized in that, It also includes a pressure gauge (36) and an air inlet pipe (37), which are respectively installed on the sealing disc (35) connected to the two ends of the furnace tube, and are used to realize pressure monitoring and the introduction of compressed air.

5. The furnace tube airtightness testing equipment as described in claim 3, characterized in that, The sealing disc (35) also includes a sealing gasket.

6. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, The support roller (22) has a conical roller structure.

7. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, It also includes an unloading module (5), which includes an unloading cylinder (51), an unloading plate (52), and a chain (53); the two unloading cylinders (51) are vertically and movably installed on the lifting frame (12), the driving end of the unloading cylinder (51) is connected to the unloading plate (52) through the chain (53), the other end of the unloading plate (52) is movably connected to the pipe support frame (2), and the two unloading plates (52) are close to the support roller (22) and are arranged parallel to the support roller (22).

8. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, It also includes a feeding module (6), which includes a feeding cylinder (61), a feeding plate (62), and a conveying roller group (63); the feeding cylinder (61) is vertically mounted on the conveying roller group (63), the driving end of the feeding cylinder (61) is movably connected to the feeding plate (62), the other end of the feeding plate (62) is movably connected to the frame of the conveying roller group (63), and the feeding plate (62) and the conveying rollers of the conveying roller group (63) are arranged at an angle.

9. The furnace tube airtightness testing equipment as described in claim 1, characterized in that, It also includes a waterproof sensor switch, which is installed on the pipe support frame (2).

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