Metal pipe fitting connecting mechanism

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a metal pipe fitting connecting mechanism which comprises a first pipe opening connected to an air compressor and a second pipe opening connected to an oil-gas separator, and a metal pipe fitting is welded between the first pipe opening and the second pipe opening. The pipe fitting further comprises a fastener, a first outer shell, a second outer shell and a detection mechanism used for detecting the internal pressure of the closed cavity and giving an alarm, the fastener is installed at the welding position to stabilize the welding position, then the closed cavity completely covers the fastener and a welding seam in a closed mode, and when cracks occur at the welding positions of the two ends of the pipe fitting, the detection mechanism can give an alarm. When the device is used, the mixed gas can quickly diffuse in the closed cavity along the crack, the closed cavity is a closed space, so that the pressure in the closed cavity can rise, and then under the action of the detection mechanism, a worker is warned of crack and leakage conditions at the position.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a connecting mechanism for metal pipe fittings. Background Art

[0002] The existing CDM30 drill, a perforating device for mining construction machinery, is equipped with an air compressor and an oil-gas separator. The interface between the air compressor and the oil-gas separator is an important part of the air compressor system. It is responsible for separating the oil-gas mixture generated during the compression process to ensure the purity of the compressed air. At the interface between the air compressor and the oil-gas separator of this device, a steel wire hose is usually used for connection, and both the inside and outside of the steel wire hose adopt rubber-coated pipes.

[0003] However, the air compressor outputs high-temperature and high-pressure oil droplets and water vapor. This mixture will flow inside the steel wire hose for a long time. During operation, the high-temperature and high-pressure mixture will accelerate the damage of the inner hose rubber surface of the steel wire hose, causing the rubber surface to age and delaminate, bulge, etc. Especially at the interfaces at both ends of the steel wire hose, due to the relatively large impact force received, the damage degree is relatively high. Secondly, the high temperature will also cause cracks and oil leakage on the outside of the steel wire hose, shortening its service life and increasing the use cost of the air compressor oil. Therefore, to change this situation, as an improvement, the steel wire hose is generally changed to a metal pipe fitting, and the pipe fitting is welded between the air compressor and the oil-gas separator. When in use, the oil-gas mixture flows through the inside of the pipe fitting. However, when the pipe fitting is welded and connected, there will also be a certain degree of swing at the connection parts at both ends of the pipe fitting, making the welding part unstable and very likely to break, and then gas leakage will occur, and it is difficult for workers to detect the leakage at this connection part, so it will cause certain potential hazards and cause malfunctions in the use of the air compressor and the oil-gas separator.

[0004] Based on the above situation, it is necessary to design a connecting mechanism for metal pipe fittings to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a connecting mechanism for metal pipe fittings to solve the problem that the steel wire hose used for connection between the air compressor and the oil-gas separator in the prior art will be damaged.

[0006] The technical problems solved by the utility model are realized by adopting the following technical solutions:

[0007] A metal pipe fitting connection mechanism includes a first pipe opening connected to an air compressor and a second pipe opening connected to an oil-gas separator. A pipe fitting made of metal is welded between the first pipe opening and the second pipe opening. It further includes: a fastener which is arranged at the welded joints at both ends of the pipe fitting and is used to strengthen the connection relationship between both ends of the pipe fitting and the first pipe opening and the second pipe opening; a first outer shell and a second outer shell. The first outer shell is sleeved on the outer side walls at both ends of the pipe fitting, and the second outer shell is respectively sleeved on the first pipe opening and the second pipe opening. After the first outer shell and the second outer shell are connected, a sealed cavity is formed, and the fastener is located inside the sealed cavity; a detection mechanism which is used to detect the pressure inside the sealed cavity and give a warning.

[0008] Preferably, the fastener includes a first clamping plate and a second clamping plate. Both the first clamping plate and the second clamping plate are movably arranged on the outer side walls at both ends of the pipe fitting, and the first clamping plate and the second clamping plate are fixedly connected by bolts.

[0009] Preferably, both the first outer shell and the second outer shell are provided with connecting flanges, and the two connecting flanges are connected by bolts.

[0010] Preferably, sealing gaskets for increasing the tightness of the sealed cavity are provided on the inner side walls of the first outer shell and the second outer shell.

[0011] Preferably, the detection mechanism includes a pressure sensor and an alarm. The pressure sensor and the alarm are both connected to the first outer shell. The input end of the alarm is connected to the output end of the pressure sensor. The pressure sensor is used to sense the pressure inside the sealed cavity and form a pressure sensing signal, and the alarm gives a warning after receiving the pressure sensing signal.

[0012] Preferably, the first outer shell is provided with a pressure sensor and an alarm. The input end of the alarm is connected to the output end of the pressure sensor. The pressure sensor is used to sense the pressure inside the sealed cavity and form a pressure sensing signal, and the alarm gives a warning after receiving the pressure sensing signal.

[0013] Preferably, a protective cover for protecting the body is provided on the outer side wall of the pipe fitting.

[0014] The beneficial effects of the present utility model are as follows: By installing fasteners at the welding joints of the pipe fittings, the pipe orifice one, and the pipe orifice two to stabilize the welding joints, and then the sealed cavity formed between the outer shell one and the outer shell two after fixed connection completely seals and covers the fasteners and the weld seams. When cracks appear at the welding joints at both ends of the pipe fittings, the mixed gas will quickly diffuse inside the sealed cavity along the cracks. Since the sealed cavity is a closed space, the pressure inside the sealed cavity will rise. Then, under the action of the detection mechanism, the worker will be alerted to the occurrence of cracks and leakage here, which facilitates the worker to detect the connection of metal pipe fittings in real time and make timely treatment, reducing the losses caused by leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a sectional view of the present utility model;

[0018] Figure 3 is of the present utility model Figure 2 is an enlarged schematic diagram of the structure at A in;

[0019] Figure 4 is an exploded structural schematic diagram of the fastener of the present utility model;

[0020] Figure 5 is an exploded schematic diagram of a part of the structure of the present utility model.

[0021] In the figure, 1, pipe orifice one; 2, pipe orifice two; 3, pipe fittings; 4, fastener; 401, clamping plate one; 402, clamping plate two; 5, outer shell one; 6, outer shell two; 7, connecting flange; 8, sealed cavity; 9, sealing gasket; 10, pressure sensor; 11, alarm; 12, protective cover; 13, fixing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the following further elaborates the present utility model in conjunction with specific drawings.

[0023] Referring to Figures 1 - 5As shown in the figure, a metal pipe fitting connection mechanism includes a first pipe opening 1 connected to an air compressor (not shown in the figure) and a second pipe opening 2 connected to an oil and gas separator (not shown in the figure). A pipe fitting 3 made of metal is welded between the first pipe opening 1 and the second pipe opening 2. It further includes: a fastener 4, which is arranged at the welding joints at both ends of the pipe fitting 3 and is used to strengthen the connection relationship between both ends of the pipe fitting 3 and the first pipe opening 1 and the second pipe opening 2; a first outer shell 5 and a second outer shell 6. The first outer shell 5 is sleeved on the outer side walls at both ends of the pipe fitting 3, and the second outer shell 6 is respectively sleeved on the first pipe opening 1 and the second pipe opening 2. After the first outer shell 5 and the second outer shell 6 are connected, a sealed cavity 8 is formed. The fastener 4 is located inside the sealed cavity 8. A detection mechanism is used to detect the pressure inside the sealed cavity 8 and give a warning. During use, by installing the fastener 4 at the welding joints of the pipe fitting 3 and the first pipe opening 1 and the second pipe opening 2 to stabilize the welding joints, and then the sealed cavity 8 formed between the fixed-connected first outer shell 5 and the second outer shell 6 completely seals and covers the fastener 4 and the weld seam. When cracks appear at the welding joints at both ends of the pipe fitting 3, the mixed gas will quickly diffuse inside the sealed cavity 8 along the cracks. Because the sealed cavity 8 is a sealed space, the pressure inside the sealed cavity 8 will rise. Then, under the action of the detection mechanism, the worker will be warned that cracks and leaks occur here, which facilitates the worker to detect the connection of the metal pipe fitting 3 in real time and make timely treatment, reducing the losses caused by leakage.

[0024] The detection mechanism includes a pressure sensor 10 and an alarm 11. Both the pressure sensor 10 and the alarm 11 are connected to the first outer shell 5. The input end of the alarm 11 is connected to the output end of the pressure sensor 10. The pressure sensor 10 is used to sense the pressure inside the sealed cavity 8 and form a pressure sensing signal. After receiving the pressure sensing signal, the alarm 11 gives a warning. During use, when a leak occurs at the welding joint between the pipe fitting 3 and the first pipe opening 1 or the second pipe opening 2, the mixed gas will quickly diffuse inside the sealed cavity 8. Because the sealed cavity 8 is a sealed space, after receiving the external high-pressure gas, the pressure inside the sealed cavity 8 will rise linearly. At this time, after the pressure sensor 10 senses and detects that the pressure exceeds the preset pressure value, it will form a pressure sensing signal and transmit it to the alarm 11. After receiving the signal, the alarm 11 will give a warning to remind the surrounding staff, and the staff will make corresponding treatments according to the warning.

[0025] The above pressure sensor 10 and alarm 11 are compatible in system and model, and both are features of the prior art. When the alarm receives the signal sent by the pressure sensor 10, it will be processed through the built-in logic algorithm. These algorithms will compare the pressure signal with the preset safety threshold. When the pressure value exceeds the threshold, the alarm 11 will trigger an alarm action, such as emitting a sound and light signal or sending a warning message through the network.

[0026] Among them, referring toFigure 3 As shown, the fastener 4 includes a first clamping plate 401 and a second clamping plate 402. The first clamping plate 401 and the second clamping plate 402 are both movably arranged on the outer side walls at both ends of the pipe fitting 3, and the first clamping plate 401 and the second clamping plate 402 are fixedly connected by bolts.

[0027] Further, referring to Figure 3 As shown, fixing rings 13 are respectively provided on the outer side walls at both ends of the pipe fitting 3, and fixing rings 13 are also provided on the outer side walls of the first pipe orifice 1 and the second pipe orifice 2. When the first housing 5 and the second housing 6 are connected, the sealing gasket 9 on its inner side wall just abuts against the corresponding fixing ring 13, thereby increasing the tightness of the sealed cavity 8.

[0028] The above-mentioned air compressor and oil-gas separator are both existing technical equipment and both belong to the air compression system on the CDM30 drill, a mining engineering construction machinery percussion equipment. The air compressor is a mechanical device that compresses gas and increases its pressure, and the main function of the oil-gas separator is to separate oil droplets and other impurities from the compressed air. The specific functions and structural details will not be elaborated. The first pipe orifice 1 is the pipe for the air compressor to export the oil-gas mixture, and the second pipe orifice 2 is the pipe for the oil-gas separator to receive the compressed air.

[0029] Among them, referring to Figure 3 As shown, connecting flanges 7 are provided on both the first housing 5 and the second housing 6. The two connecting flanges 7 are connected by bolts. By using bolts to fix the two connecting flanges 7, the positional relationship between the first housing 5 and the second housing 6 is fixed.

[0030] When the first housing 5 and the second housing 6 are in use, first, the two first housings 5 are respectively sleeved on both ends of the pipe fitting 3, then the second housing 6 is respectively sleeved on the first pipe orifice 1 and the second pipe orifice 2, and then the welding work of the pipe fitting 3 is carried out. After the fastener 4 is stabilized, then the connecting flange 7 is used to seal and connect the first housing 5 and the second housing 6.

[0031] Referring to Figure 1 As shown, finally, a protective cover 12 for protecting the body is provided on the outer side wall of the pipe fitting 3 to prevent foreign hard objects from hitting the pipe fitting 3, thereby causing damage to the pipe fitting 3. The shape of the pipe fitting 3 is not fixed, and according to the actual use situation, a corner design can be carried out. Therefore, the position where the pipe fitting 3 is located may be hit by foreign objects. The design of the protective cover 12 also prevents the operator from directly contacting the outer surface of the pipe fitting 3, thereby being scalded by the working pipe fitting 3.

Claims

1. A metal pipe fitting connection mechanism, comprising a first pipe orifice (1) connected to an air compressor and a second pipe orifice (2) connected to an oil-gas separator, wherein a pipe fitting (3) made of metal is welded between the first pipe orifice (1) and the second pipe orifice (2), and is characterized in that, It further includes: A fastener (4), which is arranged at the welded joints at both ends of the pipe fitting (3) and is used to strengthen the connection relationship between both ends of the pipe fitting (3) and the pipe orifice one (1) and the pipe orifice two (2); An outer housing one (5) and an outer housing two (6), the outer housing one (5) is sleeved on the outer side walls at both ends of the pipe fitting (3), the outer housing two (6) is respectively sleeved on the pipe orifice one (1) and the pipe orifice two (2), a sealed cavity (8) is formed after the outer housing one (5) and the outer housing two (6) are connected, and the fastener (4) is located inside the sealed cavity (8); A detection mechanism, which is used to detect the internal pressure of the sealed cavity (8) and give a warning.

2. The metal pipe fitting connection mechanism according to claim 1, characterized in that, The fastener (4) includes a clamping plate one (401) and a clamping plate two (402), both the clamping plate one (401) and the clamping plate two (402) are movably arranged on the outer side walls at both ends of the pipe fitting (3), and the clamping plate one (401) and the clamping plate two (402) are fixedly connected by bolts.

3. A metal pipe fitting connection mechanism according to claim 2, characterized in that, Connection flanges (7) are provided on both the outer housing one (5) and the outer housing two (6), and the two connection flanges (7) are connected by bolts.

4. A metal pipe fitting connection mechanism according to claim 2, characterized in that, Sealing gaskets (9) for increasing the tightness of the sealed cavity (8) are provided on the inner side walls of both the outer housing one (5) and the outer housing two (6).

5. The metal pipe fitting connection mechanism according to claim 4, characterized in that, The detection mechanism includes a pressure sensor (10) and an alarm (11), the pressure sensor (10) and the alarm (11) are both connected to the outer housing one (5), the input end of the alarm (11) is connected to the output end of the pressure sensor (10), the pressure sensor (10) is used to sense the internal pressure of the sealed cavity (8) and form a pressure sensing signal, and the alarm (11) gives a warning after receiving the pressure sensing signal.

6. A metal pipe fitting connection mechanism according to claim 5, characterized in that, A protective cover (12) for protecting the body is provided on the outer side wall of the pipe fitting (3).

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