Marine gas engine double pipe

Abstract

The utility model discloses a marine gas machine double -deck pipe belongs to marine gas machine technical field, solves the problem that the existing gas pipe is easy to leak. The double -deck pipe includes the inner layer pipe, the inner layer pipe outside is equipped with the outer layer pipe, the inner layer pipe with the outer layer pipe between be equipped with the isolation chamber, the both ends of the inner layer pipe with the outer layer pipe all are fixedly connected through the mounting flange, the outer layer pipe on be equipped with two connecting boss, the connecting boss top be equipped with the connecting flange, the connecting boss bottom extend to the inner layer pipe surface, the connecting boss middle part set up and set up the gas outlet hole that communicates with the inner layer pipe, the outer layer pipe on be equipped with the purging structure for purging the gas in the isolation chamber. The utility model discloses a marine gas machine double -deck pipe, play the role of double -deck protection, effectively prevent gas leakage, with convenient to use, the practicality is strong's characteristics.

Description

Technical Field

[0001] This utility model relates to the field of marine gas engine technology, and in particular to a double-layer tube for marine gas engines. Background Technology

[0002] For some marine engines that use natural gas as fuel, gas pipelines are used to supply natural gas to the engines. Over time, these gas pipelines can oxidize and age, leading to cracks and gas leaks.

[0003] Existing gas pipelines typically use a single-layer pipe wall structure. Once a leak occurs in the pipeline, the gas will spread into the atmosphere, posing a safety hazard and endangering human health and safety. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a double-layer pipe for marine gas engines, which provides double protection, effectively prevents gas leakage, and is convenient to use and highly practical.

[0005] The technical solution adopted by this utility model is: a double-layer pipe for marine gas engines, including an inner pipe, an outer pipe sleeved on the outside of the inner pipe, an isolation cavity between the inner and outer pipes, both ends of the inner and outer pipes being fixedly connected by mounting flanges, two connecting bosses on the outer pipe, a connecting flange on the top of the connecting bosses, the bottom of the connecting bosses extending to the surface of the inner pipe, an air outlet hole communicating with the inner pipe in the middle of the connecting bosses, and a purging structure on the outer pipe for purging the gas in the isolation cavity.

[0006] As a further improvement, the outer tube is provided with a first mounting boss for mounting a pressure sensor, and the first mounting boss has a mounting hole that communicates with the inner tube.

[0007] Furthermore, the outer surface of the outer tube is provided with two sets of second mounting bosses for mounting the ignition coil, and the second mounting bosses are provided with threaded holes.

[0008] Furthermore, the purging structure includes an air inlet and multiple vent holes. The air inlet is located on the outer tube, and multiple vent holes are arranged in a circumferential pattern on both the connecting flange and the mounting flange. The air inlet and vent holes are connected to the isolation chamber.

[0009] Furthermore, a methane concentration detector is provided on the surface of the outer tube.

[0010] Furthermore, both the connecting flange and the mounting flange are provided with sealing grooves.

[0011] Furthermore, the outer tube has mounting seats at both ends at the bottom, and the mounting seats have through holes.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model discloses a double-layered pipe for marine gas engines. By employing an inner and outer layer pipe with an isolation chamber in between, it effectively prevents gas leakage from the inner layer. If the inner layer pipe leaks, the gas flows into the isolation chamber, through which it flows to a vent, allowing the leaked gas to escape outside the ship's hold. The outer layer pipe provides a second layer of protection. A pressure sensor installed in the inner layer pipe effectively monitors the pressure, while a alkylation detector installed in the outer layer pipe effectively monitors the amount of leakage outside the pipe, providing timely alarms for maintenance. A vent hole in the mounting flange allows air to be introduced through the air inlet to purge the isolation chamber, expelling leaked gas and preventing it from remaining inside. Two vent holes in the inner layer supply gas to two channels, improving efficiency. This double-layered pipe offers dual protection, effectively enhancing leak prevention and safety, and is highly practical and widely applicable. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is an enlarged cross-sectional view of the present invention.

[0018] Wherein: 1-outer tube, 2-inner tube, 3-isolation cavity, 4-mounting flange, 5-connecting boss, 6-vent hole, 7-first mounting boss, 8-second mounting boss, 9-threaded hole, 10-mounting seat, 11-through hole, 12-sealing groove, 13-connecting flange, 14-vent hole, 15-inlet hole, 16-mounting hole, 17-methane concentration detector. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0020] See Figure 1-3As shown, this utility model discloses a double-layer pipe for a marine gas engine, comprising an inner pipe 2, an outer pipe 1 sleeved on the outside of the inner pipe 2, and an isolation cavity 3 between the inner pipe 2 and the outer pipe 1. Both ends of the inner pipe 2 and the outer pipe 1 are fixedly connected by mounting flanges 4. The outer pipe 1 has two connecting bosses 5, with connecting flanges 13 on the top of each boss 5. The bottom of each boss 5 extends to the surface of the inner pipe 2. An air outlet 6 communicating with the inner pipe 2 is provided in the middle of each boss 5. The outer pipe 1 has a purging structure for purging the gas in the isolation cavity 3. By using an inner pipe 2 and an outer pipe 1, employing a double-layer structure with an isolation cavity 3 in between, leakage of the inner layer gas can be effectively prevented. If the inner pipe 2 leaks, the gas only flows into the isolation cavity 3, through which it flows to the vent 14, and from the vent 14, the leaked gas is vented outside the ship's cabin. Pipe 1 serves as a second layer of protection. By installing a pressure sensor in the inner pipe 2, which is connected to an external controller, the pressure in the inner pipe 2 can be effectively monitored. By installing a methane concentration detector 17 in the outer pipe 1, which is connected to an external controller with an alarm, the amount of leakage outside the pipe can be effectively monitored, and an alarm can be triggered in time to allow relevant personnel to carry out maintenance. Vent holes 14 are provided in the mounting flange 4 and the connecting flange 13, allowing air to be introduced through the air inlet 15 to purge the isolation chamber 3 and discharge the leaked gas from the vent holes, preventing it from remaining in the isolation chamber 3. By setting two inner vent holes 6, gas can be supplied to two channels, improving the efficiency of use. The double-layer pipe of this application has a dual protection function, effectively improving the leakage prevention level and the safety of use. It has the characteristics of strong practicality and wide applicability.

[0021] Specifically, the outer tube 1 is provided with a first mounting boss 7 for mounting a pressure sensor. The first mounting boss 7 facilitates the support and installation of the pressure sensor. The first mounting boss 7 is provided with a mounting hole 16 that communicates with the inner tube 2. The detection end of the pressure sensor passes through the mounting hole 16 and the inner tube, which can effectively monitor the pressure of the inner tube 2.

[0022] Preferably, the outer surface of the outer tube 1 is provided with two sets of second mounting bosses 8 for mounting the ignition coil. The second mounting bosses 8 are provided with threaded holes 9 to facilitate the installation and fixing of the ignition coil.

[0023] Furthermore, the purging structure includes an air inlet 15 and multiple vent holes 14. The air inlet 15 is provided on the outer tube 1, and multiple vent holes 14 are provided on both the connecting flange 13 and the mounting flange 4. The air inlet 15 and the vent holes 14 are connected to the isolation chamber 3. When gas leaks into the isolation chamber 3, air can be introduced through the air inlet 15 to purge the isolation chamber 3 and discharge the leaked gas through the vent holes to prevent it from remaining in the isolation chamber 3.

[0024] Furthermore, a methane concentration detector 17 is installed on the surface of the outer tube 1. By installing the methane concentration detector on the outer tube, the amount of leakage outside the tube can be effectively monitored, and an alarm can be set in time to allow relevant personnel to carry out maintenance.

[0025] Furthermore, both the connecting flange 13 and the mounting flange 4 are provided with sealing grooves 12 for installing sealing rings to prevent leakage at the connection.

[0026] Furthermore, mounting bases 10 are provided at the bottom of both ends of the outer tube 1. The mounting bases 10 have through holes 11 for bolts to pass through the through holes 11 and for fixing the double tubes by fixing the mounting bases 10.

[0027] In this embodiment, a double-layered marine gas engine pipe, by setting an inner pipe 2 and an outer pipe 1, adopts a two-layer structure with an isolation chamber 3 in between, which can effectively prevent gas leakage from the inner layer. If the inner pipe 2 leaks, the gas only flows into the isolation chamber 3, and through the isolation chamber 3 to the vent 14, from which the leaked gas is vented to the outside of the hull. The outer pipe 1 thus serves as a second layer of protection. By installing a pressure sensor on the inner pipe 2, which is connected to an external controller, the pressure of the inner pipe 2 can be effectively monitored. A methane concentration detector 17 is installed on the outer tube 1, and the methane concentration detector 17 is connected to an external controller. The controller is equipped with an alarm, which can effectively monitor the amount of leakage outside the tube and promptly alert relevant personnel for maintenance. Vent holes 14 are provided in the mounting flange 4 and connecting flange 13, allowing air to be introduced through the air inlet 15 to purge the isolation chamber 3 and discharge the leaked gas through the vent holes, preventing it from remaining in the isolation chamber 3. By providing two inner vent holes 6, gas can be supplied to two channels, improving efficiency. This utility model of a double-layered marine gas engine provides double protection, effectively preventing gas leakage, and is characterized by ease of use and high practicality.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A double-layered tube for a marine gas engine, characterized in that, The system includes an inner tube (2), an outer tube (1) is sleeved on the outside of the inner tube (2), an isolation cavity (3) is provided between the inner tube (2) and the outer tube (1), both ends of the inner tube (2) and the outer tube (1) are fixedly connected by mounting flanges (4), the outer tube (1) is provided with two connecting bosses (5), the top of the connecting bosses (5) is provided with a connecting flange (13), the bottom of the connecting bosses (5) extends to the surface of the inner tube (2), the middle of the connecting bosses (5) is provided with an air outlet (6) communicating with the inner tube (2), and the outer tube (1) is provided with a purging structure for purging the gas in the isolation cavity (3).

2. The marine gas engine double-layer tube according to claim 1, characterized in that, The outer tube (1) is provided with a first mounting boss (7) for mounting a pressure sensor, and the first mounting boss (7) is provided with a mounting hole (16) communicating with the inner tube (2).

3. The marine gas engine double-layer pipe according to claim 1, characterized in that, The outer surface of the outer tube (1) is provided with two sets of second mounting bosses (8) for mounting ignition coils, and the second mounting bosses (8) are provided with threaded holes (9).

4. The marine gas engine double-layer tube according to claim 1, characterized in that, The purging structure includes an air inlet (15) and multiple vent holes (14). The air inlet (15) is provided on the outer tube (1). Multiple vent holes (14) are provided on both the connecting flange (13) and the mounting flange (4). The air inlet (15) and the vent holes (14) are connected to the isolation chamber (3).

5. A double-layer tube for marine gas engines according to claim 1, characterized in that, The outer tube (1) is equipped with a methane concentration detector (17) on its surface.

6. A double-layer tube for marine gas engines according to claim 1, characterized in that, Both the connecting flange (13) and the mounting flange (4) are provided with sealing grooves (12).

7. A double-layer tube for marine gas engines according to claim 1, characterized in that, The outer tube (1) has mounting bases (10) at both ends at the bottom, and the mounting bases (10) have through holes (11).

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