Water pressure testing equipment for nodular cast iron pipe

Abstract

The utility model relates to the technical field of cast pipe production equipment, and provides nodular cast iron pipe water pressure testing equipment which comprises a frame body and two groups of water pressure testing mechanisms arranged on the frame body in parallel, each group of water pressure testing mechanism comprises a socket plug, a socket clamp, a socket end carrier roller, a socket end carrier roller and a clamp oil cylinder; a water inlet pipe is arranged on the socket plug; the socket plug is fixedly installed at one end of the frame body, and the clamp oil cylinder is correspondingly installed at the other end of the frame body. A socket clamp is arranged on a telescopic rod of the clamp oil cylinder; the socket clamp and the socket plug are oppositely arranged and are located on the same straight line; a socket end carrier roller is arranged on the inner side of the socket plug, and a spigot end carrier roller is arranged on the inner side of the spigot clamp. The double-station cast pipe water pressure test is adopted, the test process is automatically carried out, the cast pipe does not need to be hoisted, the operation difficulty is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cast pipe production equipment technical field especially relates to a nodular cast iron pipe water pressure test equipment. BACKGROUND

[0002] Water pressure test is the important link of nodular cast iron pipe (abbreviation cast pipe) inspection, and its main purpose is to test the water tightness and strength of cast pipe, whether there is production defect such as penetration and rupture, and ensure product quality.

[0003] When traditional cast pipe water pressure test, each cast pipe is by artificial hoisting cast pipe to water pressure testing machine and carries out test, and test efficiency is relatively low, and operation difficulty is relatively big, and the degree of automation is low. And current water pressure testing machine can only test single cast pipe, and production efficiency is relatively low. UTILITY MODEL CONTENTS

[0004] The utility model mainly solves the technical problem of traditional cast pipe water pressure test, each cast pipe is by artificial hoisting cast pipe to water pressure testing machine and carries out test, and test efficiency is relatively low, and operation difficulty is relatively big, and the degree of automation is low, and a kind of nodular cast iron pipe water pressure test equipment is presented, and cast pipe water pressure test is carried out using double station, and test process is automatically carried out, and cast pipe does not need to be hoisted, reduces operation difficulty, and improves production efficiency.

[0005] The utility model provides a kind of nodular cast iron pipe water pressure test equipment, it include: frame body and two groups of water pressure test mechanism being parallelly arranged on frame body;

[0006] Each water pressure test mechanism includes: socket plug, socket clamp, socket end roller, socket end roller and clamp oil cylinder;

[0007] Water pipe is arranged on the socket plug;The socket plug is fixedly installed at one end of the frame body, and the clamp oil cylinder is correspondingly installed at the other end of the frame body;

[0008] Socket clamp is arranged on the telescopic rod of the clamp oil cylinder;The socket clamp is oppositely arranged with the socket plug, and is on the same straight line;

[0009] Socket end roller is arranged on the inner side of the socket plug, and socket end roller is arranged on the inner side of the socket clamp.

[0010] Preferably, step beam is arranged below the frame body;The step beam is vertically arranged with the frame body.

[0011] Preferably, safety door is arranged on the both sides of the frame body.

[0012] Preferably, a plurality of guide wheels are arranged on the frame body;

[0013] The guide wheel guides the telescopic rod of the clamp oil cylinder.

[0014] Preferably, the input end of the frame body is provided with a waiting station roller, and the output end is provided with a buffer roller.

[0015] Preferably, a first laser range finder is arranged above the waiting station roller, and a second laser range finder is arranged above the socket end roller.

[0016] Preferably, a lifting oil cylinder is arranged in the socket end roller.

[0017] Preferably, the water inlet pipe is communicated with a low-pressure pump and a booster cylinder, and the booster cylinder is communicated with a high-pressure water tank.

[0018] Preferably, a liquid level detection sensor is arranged at the end of the water inlet pipe.

[0019] Preferably, an exhaust valve and a pressure sensor are arranged on the socket plug.

[0020] The ball pipe water pressure test equipment provided by the utility model has simple structure, reasonable process arrangement and low failure rate in use, has relatively low requirement on installation and maintenance, reduces the use and maintenance cost, and is convenient for maintenance and replacement. The double stations are adopted for cast pipe water pressure test, the test process is automatically performed, the cast pipe does not need to be hoisted, the operation difficulty is reduced, the production efficiency is improved, and the automation degree is improved. The detection parameters can be independently set in each water pressure test station, the cast pipe water pressure test of different pipe types is adapted, the production efficiency and the production flexibility are improved. The utility model can be applied to the production line in the metallurgical industry field of the ball pipe, has ideal effect, and has very wide market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structure schematic view of the ball pipe water pressure test equipment provided by the utility model;

[0022] Figure 2 is the top view of the ball pipe water pressure test equipment provided by the utility model;

[0023] Figure 3 is the structure schematic view of the step beam provided by the utility model.

[0024] Mark: 1, cast pipe; 2, frame body; 3, socket plug; 4, socket clamp; 5, socket end roller; 6, socket end roller; 7, waiting station roller; 8, buffer roller; 9, step beam; 10, clamp oil cylinder; 11, water inlet pipe; 12, guide wheel; 13, safety door. DETAILED DESCRIPTION

[0025] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, not limit the utility model. In addition, it needs to be explained that, in order to facilitate description, only the parts related to the utility model are shown in the drawings, not all contents.

[0026] As Figures 1-2 Indicated, the utility model embodiment provides ductile cast iron pipe water pressure test equipment, including: frame body 2 and two groups of water pressure test mechanism parallelly arranged on frame body 2.

[0027] Two groups of water pressure test mechanism realize double position water pressure test. Each group of water pressure test mechanism, including: socket plug 3, socket clamp 4, socket end roller 5, socket end roller 6 and clamp oil cylinder 10.

[0028] Socket plug 3 is provided with water inlet pipe 11, water inlet pipe 11 is communicated with low-pressure pump, booster cylinder, booster cylinder is communicated with high-pressure water tank. By low-pressure pump, low-pressure water is provided, and high-pressure water is provided by booster cylinder and high-pressure water tank.

[0029] Socket plug 3 is fixedly installed at one end of frame body 2, and clamp oil cylinder 10 is correspondingly installed at the other end of frame body 2. Socket clamp 4 is arranged on the telescopic rod of clamp oil cylinder 10, and socket clamp 4 is arranged opposite to socket plug 3 and on the same straight line. A plurality of guide wheels 12 are arranged on frame body 2, and the telescopic rod of clamp oil cylinder 10 is guided by guide wheels 12. Socket plug 3 is used to block the socket end of cast pipe 1, and socket clamp 4 is used to block the socket end of cast pipe 1. Socket clamp 4 is driven to extend and retract by clamp oil cylinder 10. Socket plug 3 and socket clamp 4 are provided with sealing rings in the circumferential direction to ensure the sealing property after clamping cast pipe 1.

[0030] Socket end roller 5 is arranged on the inner side of socket plug 3, and socket end roller 6 is arranged on the inner side of socket clamp 4. Socket end roller 5 is used to support the socket end of cast pipe 1, and socket end roller 6 is used to support the socket end of cast pipe 1. Lifting oil cylinder is arranged in socket end roller 5, so that socket end roller 5 can be lifted after test is completed, and socket end roller 5 is higher than socket end roller 6, facilitating water in cast pipe 1 to flow out.

[0031] Step beam 9 is arranged below frame body 2, and step beam 9 is arranged perpendicularly to frame body 2. As Figure 3 Indicated, step beam 9 includes step beam support, lifting oil cylinder and translation oil cylinder, and two hinged plates are hinged below step beam support. Lifting is realized by lifting oil cylinder, and translation is realized by translation oil cylinder.

[0032] The both sides of the frame body 2 are provided with safety doors 13, which play a protective role during testing.

[0033] Further, a first laser range finder is arranged above the waiting station roller 7 to detect the presence of the pipe at the waiting station; a second laser range finder is arranged above the socket end roller 5 to detect the presence of the pipe at the water pressure testing station. The end of the water inlet pipe 11 is provided with a liquid level detection sensor, the water inlet pipe 11 is arranged at the top of the socket plug 3, the liquid level detection sensor is arranged on the outer wall of the end of the water inlet pipe 11, and the liquid level detection sensor can detect whether the cast pipe 1 is filled with water. The socket plug 3 is provided with an exhaust valve and a pressure sensor.

[0034] The working process of the water pressure testing equipment for nodular cast iron pipes is as follows: the finished cast pipe 1 is placed on the waiting station roller 7, the first laser range finder detects the presence of the pipe, sends a signal to the PLC controller after detecting the cast pipe 1, and controls the step beam 9 to transport the cast pipe 1 from the waiting station roller 7 to the socket end roller 5 and the socket end roller 6 of the water pressure testing station; the step beam 9 returns after descending. The second laser range finder detects the presence of the pipe, sends a signal to the PLC controller after detecting the cast pipe 1, and controls the clamp oil cylinder 10 to drive the socket clamp 4 to clamp the cast pipe 1, sends a confirmation clamping signal to the PLC controller after clamping. The left and right safety doors 13 of the water pressure testing station are lowered, the water inlet pipe 11 on the socket plug 3 transports low-pressure water into the cast pipe 1, and the exhaust valve is kept open at the same time to discharge gas and part of the overflowing water through the exhaust valve; the liquid level detection sensor installed on the water inlet pipe 11 detects that the water in the cast pipe 1 is full, sends a command to the PLC controller to close the exhaust valve, and the cast pipe 1 is filled with water; the water in the high-pressure water tank is pressurized and injected into the cast pipe 1 by the booster cylinder, the pressure sensor detects the water pressure detection parameter, the PLC controller built-in delay timer starts timing, and the socket clamp 4 is slowly loosened after the preset time is reached, the socket end roller 5 is driven to rise by the lifting oil cylinder, and a small height difference is formed with the socket end roller 6, which helps the water to be discharged faster from the socket end and the socket end of the cast pipe 1, and the water pressure detection is completed. The step beam 9 lifts the cast pipe 1 after the water pressure testing is completed and places it on the buffer roller 8, waiting to be transported to the next detection station; the cast pipe 1 on the waiting station roller 7 is lifted and transported to the water pressure testing station.

[0035] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the modification of the technical solutions recorded in the foregoing embodiments, or the equivalent replacement of part or all of the technical features, does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ductile cast iron pipe water pressure testing apparatus, characterized by, The utility model relates to a kind of water pressure test mechanism, including: Frame body (2) and two groups of water pressure test mechanism arranged in parallel on frame body (2); Each group of water pressure test mechanism includes: socket plug (3), socket clamp (4), socket end roller (5), socket end roller (6) and clamp oil cylinder (10); Water inlet pipe (11) is arranged on the socket plug (3);The socket plug (3) is fixedly installed at one end of the frame body (2), and the clamp oil cylinder (10) is correspondingly installed at the other end of the frame body (2); Socket clamp (4) is arranged on the telescopic rod of the clamp oil cylinder (10);The socket clamp (4) is arranged opposite to the socket plug (3) and on the same straight line. Socket end roller (5) is arranged inside the socket plug (3), and socket end roller (6) is arranged inside the socket clamp (4).

2. The ductile cast iron pipe water pressure test apparatus according to claim 1, characterized by, Step beam (9) is arranged below the frame body (2);The step beam (9) is arranged perpendicular to the frame body (2).

3. The ductile cast iron pipe water pressure test apparatus according to claim 2, characterized by, Safety door (13) is arranged on both sides of the frame body (2).

4. The ductile cast iron pipe water pressure test apparatus according to claim 1, characterized by, A plurality of guide wheels (12) are arranged on the frame body (2); The telescopic rod of the clamp oil cylinder (10) is guided by the guide wheel (12).

5. The ductile cast iron pipe water pressure test apparatus according to claim 2, characterized by Waiting station roller (7) is arranged at the input end of the frame body (2), and buffer roller (8) is arranged at the output end.

6. The ductile cast iron pipe water pressure test apparatus according to claim 5, characterized by First laser range finder is arranged above the waiting station roller (7), and second laser range finder is arranged above the socket end roller (5).

7. The ductile cast iron pipe water pressure test apparatus according to claim 1, characterized by Lifting oil cylinder is arranged in the socket end roller (5).

8. The ductile cast iron pipe water pressure test apparatus according to claim 1, characterized by, The water inlet pipe (11) is communicated with low-pressure pump and booster cylinder, and the booster cylinder is communicated with high-pressure water tank.

9. The ductile cast iron pipe water pressure test apparatus according to claim 8, characterized by, Liquid level detection sensor is arranged at the end of the water inlet pipe (11).

10. The ductile iron pipe water pressure test apparatus of claim 1, wherein, Exhaust valve and pressure sensor are arranged on the socket plug (3).

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