Water inlet pipe mechanism for natural gas engine

Abstract

The water inlet pipe mechanism for the natural gas engine comprises an engine oil cooler, a water pump, a water outlet pipe and a water inlet pipe, the water pump is installed on one side of the engine oil cooler, the water outlet pipe is communicated with the water outlet end of the engine oil cooler, and the water inlet pipe is communicated with the water inlet end of the engine oil cooler; the front surface of the water inlet pipe is in threaded connection with a zinc rod assembly; the zinc rod assembly comprises a screw plug, a composite gasket, a double-end stud and a zinc rod, the screw plug is in threaded connection with the front face of the water inlet pipe, the surface of the screw plug is sleeved with the composite gasket, the screw plug and the zinc rod are in threaded connection with the two ends of the double-end stud respectively, the length L1 of the screw plug is 25 mm, and the length L2 of the zinc rod is 60 mm. According to the utility model, the original engine is slightly changed, and the corrosion resistance of the engine can be well improved on the basis of meeting the dynamic performance of the original engine.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas engines, and specifically relates to a water inlet pipe mechanism for a natural gas engine. Background Art

[0002] Among various mechanical products, the exploration of corrosion-resistant technology for engine parts is the most common thing. The corrosion problem of engine parts is difficult to solve in the existing technology, especially the water inlet pipe of the natural gas engine, which is in contact with seawater for a long time; it has been in a high-salt environment and is more easily corroded by seawater. Utility Model Content

[0003] The utility model provides a water inlet pipe mechanism for a natural gas engine, which solves the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a water inlet pipe mechanism for a natural gas engine, comprising an oil cooler, a water pump, a water outlet pipe and a water inlet pipe, wherein the water pump is installed on one side of the oil cooler, the water outlet pipe is connected to the water outlet end of the oil cooler, and the water inlet pipe is connected to the water inlet end of the oil cooler;

[0005] The front surface of the water inlet pipe is threadedly connected with a zinc rod assembly;

[0006] The zinc rod assembly includes a screw plug, a composite gasket, a stud and a zinc rod. The screw plug is threadedly connected to the front surface of the water inlet pipe, the composite gasket is sleeved on the surface of the screw plug, and the screw plug and the zinc rod are respectively threadedly connected to both ends of the stud.

[0007] Preferably, the length of the screw plug L1=25 mm, and the length of the zinc rod L2=60 mm.

[0008] Preferably, the threaded connection parts of the screw plug and the zinc rod are both coated with liquid raw tape.

[0009] Preferably, the water inlet pipe is made of corrosion-resistant material 316 stainless steel and has an outer surface powder spraying process.

[0010] The beneficial effects of adopting the above technical solution are:

[0011] In addition to the use of corrosion-resistant 316 stainless steel and external powder spraying technology for the parts themselves, the utility model also adds a zinc rod structure, which is beneficial to the cathode protection principle of the zinc rod.

[0012] The cathodic protection principle of zinc rods is an innovative application based on the principle of electrochemical corrosion. This method uses zinc alloy as an active metal with a lower electrode potential. When the zinc alloy contacts the protected metal (such as steel) and is placed in an electrolyte environment, the zinc alloy will preferentially undergo a corrosion reaction, that is, it sacrifices itself as an anode, and the protected metal acts as a cathode, avoiding the occurrence of corrosion. This sacrificial anode protection method is essentially a process of current transfer. The electrons released by the zinc alloy anode during the corrosion process are transferred to the protected metal through the electrolyte, thereby neutralizing the current that may cause metal corrosion. In this way, the zinc alloy plays the role of a "stand-in", withstands the invasion of corrosion, and protects the safety of other metals. In addition, the zinc alloy sacrificial anode also has good self-regulation performance, and can provide zinc anodes of different shapes according to needs, such as rectangular, square, bracelet and other various special shapes, which are widely used in the protection of steel equipment in seawater or rivers, and to prevent the corrosion of cables, oil pipelines, underground equipment and chemical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural assembly view of the utility model;

[0014] Figure 2 This is a schematic diagram of the water inlet pipe structure of the utility model;

[0015] Figure 3 This is a structural view of the zinc rod assembly of the utility model;

[0016] in:

[0017] 1. Oil cooler; 2. Water pump; 3. Water outlet pipe; 4. Water inlet pipe; 5. Zinc rod assembly; 51. Screw plug; 52. Composite gasket; 53. Zinc rod; 54. Zinc rod. DETAILED DESCRIPTION

[0018] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0019] like Figures 1 to 3 As shown, the utility model is a water inlet pipe mechanism for a natural gas engine, which requires relatively little modification to the original engine. On the basis of satisfying the power performance of the original engine, its corrosion resistance can be well improved.

[0020] Specifically, Figures 1 to 3As shown, it includes an oil cooler 1, a water pump 2, a water outlet pipe 3 and a water inlet pipe 4. The water pump 2 is installed on one side of the oil cooler 1, the water outlet pipe 3 is connected to the water outlet end of the oil cooler 1, and the water inlet pipe 4 is connected to the water inlet end of the oil cooler 1;

[0021] The front surface of the water inlet pipe 4 is threadedly connected with a zinc rod assembly 5;

[0022] The zinc rod assembly 5 includes a screw plug 51, a composite gasket 52, a stud 53 and a zinc rod 54. The screw plug 51 is threadedly connected to the front of the water inlet pipe 4, the composite gasket 52 is sleeved on the surface of the screw plug 51, and the screw plug 51 and the zinc rod 54 are respectively threadedly connected to the two ends of the stud 53.

[0023] The length of the screw plug 51 is L1=25mm, the length of the zinc rod 54 is L2=60mm, wherein the stud 53 has D3=M12X1.5, D2=M22X1.5, and D1=18mm.

[0024] The threaded connection parts of the screw plug 51 and the zinc rod 54 are coated with liquid raw tape. The outer surface is exposed to high salt mist environment for a long time and is easily corroded. The liquid raw tape can effectively prevent corrosion.

[0025] The water inlet pipe 4 is made of corrosion-resistant 316 stainless steel and has an outer surface powder spraying process to prevent it from falling off and to prevent the zinc threaded parts from falling off due to seawater corrosion.

[0026] The specific working method is described below with specific embodiments: Example 1

[0027] Install the zinc rod assembly 5 on the water inlet pipe 4 and connect them through the thread size D2; apply liquid raw tape to the threaded connection between the zinc rod and the screw plug to prevent it from falling off and to prevent the zinc threaded part from falling off due to seawater corrosion;

[0028] The water inlet pipe 4 is made of corrosion-resistant 316 stainless steel and has a powder coating process on the outer surface (the outer surface is exposed to high salt spray environment for a long time and is easily corroded);

[0029] After the engine is started, it drives the water pump to operate, seawater enters through the water inlet pipe 4 and is discharged through the water outlet pipe 4, and the water circulates for cooling.

[0030] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above-mentioned concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A water inlet pipe mechanism for a natural gas engine, characterized in that: It comprises an oil cooler (1), a water pump (2), a water outlet pipe (3) and a water inlet pipe (4), wherein the water pump (2) is mounted on one side of the oil cooler (1), the water outlet pipe (3) is connected to the water outlet end of the oil cooler (1), and the water inlet pipe (4) is connected to the water inlet end of the oil cooler (1); The front surface of the water inlet pipe (4) is threadedly connected with a zinc rod assembly (5); The zinc rod assembly (5) comprises a screw plug (51), a composite gasket (52), a stud bolt (53) and a zinc rod (54); the screw plug (51) is threadedly connected to the front surface of the water inlet pipe (4); the composite gasket (52) is sleeved on the surface of the screw plug (51); and the screw plug (51) and the zinc rod (54) are respectively threadedly connected to the two ends of the stud bolt (53).

2. The water inlet pipe mechanism for a natural gas engine according to claim 1, characterized in that: The screw plug (51) has a length L1 of 25 mm and the zinc rod (54) has a length L2 of 60 mm.

3. The water inlet pipe mechanism for a natural gas engine according to claim 1, characterized in that: The threaded connection parts of the screw plug (51) and the zinc rod (54) are both coated with liquid raw tape.

4. The water inlet pipe mechanism for a natural gas engine according to claim 1, characterized in that: The water inlet pipe (4) is made of corrosion-resistant 316 stainless steel and has an outer surface powder spraying process.

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