Fuel gas pressure reducer for vehicle

Abstract

The utility model relates to the technical field of pressure reducers, and provides a gas pressure reducer for a vehicle, which comprises a valve body, water pipe connectors are arranged on two sides of the bottom of the valve body, and a gas outlet connector is arranged in the middle of the bottom of the valve body. The gas pressure is accurately regulated and controlled in real time according to the working condition of the engine, so that gas is stably supplied, the combustion efficiency of the engine is greatly improved, tail gas pollution is reduced, and stable and reliable operation, quick power output response and comfortable driving experience of the vehicle are guaranteed. High-pressure gas inlet and an electromagnetic valve assembly in the four-way seat are matched with a vehicle control system, high-pressure gas is efficiently treated and safely distributed, the leakage risk is reduced, the gas flow field is optimized, the gas utilization rate is increased, and economical efficiency is enhanced. The combination of the water pipe connector, the cooling system and the channel effectively solves the problems of pressure reduction, cooling and icing, maintains the proper internal temperature, and prevents damage to parts and blockage of pipelines.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure reducer technical field, especially relates to a vehicle's gas pressure reducer. BACKGROUND

[0002] The main function of the vehicle's gas pressure reducer is to reduce high-pressure natural gas to a low-pressure range suitable for engine combustion and maintain the stability of the output pressure under various operating conditions of the vehicle. When high-pressure natural gas enters the pressure reducer, it is first distributed by the high-pressure processing component. Then, through the internal pressure regulating component, the mechanical action of the diaphragm and spring is used to gradually reduce the natural gas according to the needs of the engine.

[0003] The traditional vehicle's gas pressure reducer design has obvious defects. In terms of pressure regulation, the mechanism is simple and lacks precise regulating components. When the engine operating conditions change, the pressure control precision is poor and the fluctuation is severe, which causes the engine to burn insufficiently, increases fuel consumption and emissions, and even damages the engine, shortening its service life. In terms of high-pressure gas processing, there is a lack of perfect control and distribution structure. Without the cooperation of precise solenoid valves and specific high-pressure components, the safety is questionable and gas leakage is easy to occur. Under long-term use or external interference, there is a hidden danger of causing serious safety accidents. Temperature control means is scarce, and depends on natural heat dissipation or simple heat insulation. When running at low temperature or high load, the temperature drop caused by the Joule-Thomson effect cannot be prevented, which damages the internal structure, blocks the gas passage, causes supply interruption, and the vehicle cannot run normally, with high maintenance cost and frequent failures. SUMMARY

[0004] The utility model aims at providing a vehicle's gas pressure reducer, which solves the above problems by using the device.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a vehicle's gas pressure reducer, comprising a valve body, water pipe joints are arranged on both sides of the bottom of the valve body, a gas outlet joint is arranged at the middle position of the bottom of the valve body, a safety valve assembly is arranged on the right side of the valve body, an upper cover is arranged at the rear end of the valve body, a lower cover is arranged at the front end of the valve body, and a high-pressure four-way seat is arranged on the left side of the valve body.

[0006] Preferably, the inside of the upper cover is provided with a spring one, the front end of the spring one is provided with a pressing plate one, the front end of the pressing plate one is provided with a diaphragm one, the front end of the diaphragm one is provided with a pressing plate two, the front end of the pressing plate two is provided with a stand column, and the front end of the stand column is provided with a lever.

[0007] Preferably, the inside of the lower cover is provided with a pressure regulating rod, the rear end of the pressure regulating rod is provided with a spring seat, the rear end of the spring seat is provided with a spring two, the rear end of the spring two is provided with a guide column one, the rear end of the guide column one is provided with a diaphragm two, the front end of the diaphragm two is provided with a pressure plate three, the rear end of the diaphragm two is provided with a valve port connecting rod, the rear end of the valve port connecting rod is provided with a valve port sealing seat, and the bottom end of the front part of the lower cover is provided with a vacuum nozzle.

[0008] Preferably, the front end of the high-pressure four-way seat is provided with a coil, the bottom of the coil is provided with a high-pressure air inlet connector, the top of the high-pressure air inlet connector is provided with a filter screen, the rear end of the coil is provided with a high-pressure electromagnetic valve cylinder plug, the rear end of the high-pressure electromagnetic valve cylinder plug is provided with a high-pressure electromagnetic valve cylinder body, the rear end of the high-pressure electromagnetic valve cylinder body is provided with an electromagnetic valve spring, the rear end of the electromagnetic valve spring is provided with a high-pressure electromagnetic valve spool, and the rear end of the high-pressure electromagnetic valve spool is provided with a high-pressure electromagnetic valve pilot head.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] The utility model provides a kind of gas pressure reducer for vehicle, and precise pressure regulating system is built by spring, pressure plate, column, lever and diaphragm etc., and gas pressure is controlled in real time and accurately according to engine operating condition, so that gas is stably supplied, engine combustion efficiency is greatly improved, tail gas pollution is reduced, vehicle operation is stable and reliable, power output responds quickly, and driving experience is comfortable.High-pressure intake and electromagnetic valve assembly in four-way seat cooperate with vehicle control system, efficiently process and safely distribute high-pressure gas, reduce leakage risk, optimize airflow field, improve gas utilization rate, and enhance economy.Water pipe connector and cooling system and passage combination effectively solve the problems of pressure reduction and cooling and icing, maintain suitable internal temperature, prevent component damage and pipeline blockage, reduce fault downtime, prolong equipment life, reduce maintenance cost, while each component is carefully designed to cooperate, overall performance is excellent, can flexibly respond to complex operating condition changes, and ensure continuous and stable gas supply. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is overall structure schematic diagram of the utility model;

[0012] Figure 2 It is front view structure schematic diagram of the utility model;

[0013] Figure 3 It is bottom view structure schematic diagram of the utility model;

[0014] Figure 4 It is valve body structure split drawing of the utility model;

[0015] Figure 5 It is high-pressure four-way seat structure split drawing of the utility model.

[0016] Explanation of the reference numerals in the figure: 1. valve body; 11. water pipe joint; 12. air outlet joint; 13. safety valve assembly; 2. upper cover; 21. spring 1; 22. pressure plate 1; 23. diaphragm 1; 24. pressure plate 2; 25. column; 26. lever; 3. lower cover; 31. vacuum nozzle; 32. pressure regulating rod; 33. spring seat; 34. spring 2; 35. guide column 1; 36. pressure plate 3; 37. diaphragm 2; 38. valve port connecting rod; 39. valve port sealing seat; 4. high-pressure four-way seat; 41. coil; 42. high-pressure air inlet joint; 43. high-pressure solenoid valve barrel plug; 44. high-pressure solenoid valve barrel body; 45. solenoid valve spring; 46. high-pressure solenoid valve spool; 47. high-pressure solenoid valve pilot head; 48. filter screen. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0019] Combine Figures 1 to 5 As shown, the utility model is a vehicle-use gas pressure reducer, comprising a valve body 1, water pipe joints 11 are provided on both sides of the bottom of the valve body 1, a gas outlet joint 12 is provided at the middle position of the bottom of the valve body 1, a safety valve assembly 13 is provided on the right side of the valve body 1, an upper cover 2 is provided at the rear end of the valve body 1, a lower cover 3 is provided at the front end of the valve body 1, and a high-pressure four-way seat 4 is provided on the left side of the valve body 1.

[0020] A spring 21 is provided inside the upper cover 2, a pressure plate 22 is provided at the front end of the spring 21, a diaphragm 23 is provided at the front end of the pressure plate 22, a pressure plate 24 is provided at the front end of the diaphragm 23, a column 25 is provided at the front end of the pressure plate 24, and a lever 26 is provided at the front end of the column 25.

[0021] A pressure regulating rod 32 is provided inside the lower cover 3, a spring seat 33 is provided at the rear end of the pressure regulating rod 32, a spring second 34 is provided at the rear end of the spring seat 33, a guide column 1 35 is provided at the rear end of the spring second 34, a diaphragm second 37 is provided at the rear end of the guide column 1 35, a pressure plate 36 is provided at the front end of the diaphragm second 37, a valve port connecting rod 38 is provided at the rear end of the valve port connecting rod 38, a valve port sealing seat 39 is provided at the rear end of the valve port connecting rod 38, and a vacuum nozzle 31 is provided at the bottom end of the front part of the lower cover 3.

[0022] The front end of the high-pressure four-way seat 4 is provided with a coil 41, the bottom of the coil 41 is provided with a high-pressure gas inlet joint 42, the top of the high-pressure gas inlet joint 42 is provided with a filter screen 48, the rear end of the coil 41 is provided with a high-pressure electromagnetic valve cylinder plug 43, the rear end of the high-pressure electromagnetic valve cylinder plug 43 is provided with a high-pressure electromagnetic valve cylinder body 44, the rear end of the high-pressure electromagnetic valve cylinder body 44 is provided with an electromagnetic valve spring 45, the rear end of the electromagnetic valve spring 45 is provided with a high-pressure electromagnetic valve spool 46, and the rear end of the high-pressure electromagnetic valve spool 46 is provided with a high-pressure electromagnetic valve pilot head 47.

[0023] Working principle:

[0024] The high-pressure natural gas is introduced into the high-pressure four-way seat through the high-pressure gas inlet joint, and the high-pressure electromagnetic valve cylinder plug, the electromagnetic valve spring and the high-pressure electromagnetic valve spool in the high-pressure four-way seat cooperate to control the preliminary distribution of the gas. When the control system of the vehicle sends a signal to open the electromagnetic valve, the gas enters the valve body according to the predetermined path under the control of the electromagnetic valve spring and the high-pressure electromagnetic valve spool for pressure reduction. The electromagnetic valve is opened or closed in time according to the engine operating condition and demand, ensuring that high-pressure gas enters only when needed, thereby realizing preliminary control and safe distribution of high-pressure gas.

[0025] Inside the valve body, spring one and spring two, pressure plate one, pressure plate two and pressure plate three, stand and lever and other components work together to achieve pressure reduction. After the gas enters the valve body, it acts on the diaphragm to deform it. The deformation of the diaphragm drives the lever to move, and the lever amplifies the small deformation of the diaphragm with the stand as the fulcrum, and then pushes the pressure plate. The movement of the pressure plate changes the position of the spool, thereby adjusting the flow area of the gas. For example, when the gas pressure is too high, the diaphragm deforms greatly, the lever pushes the pressure plate to move the spool in the direction of reducing the flow area of the gas, the gas flow rate slows down, and the pressure decreases; conversely, when the pressure is low, the spring pushes the pressure plate to move the spool in the direction of increasing the flow area of the gas, so that the pressure rises, thereby achieving pressure reduction.

[0026] The upper cover and its internal components are provided with a lever system, and pressure regulation and stabilization are mainly achieved by the elasticity of the spring and the lever system. The spring constant needs to be designed in advance according to the required gas pressure range of the engine. When the engine operating condition changes and the gas pressure demand changes, such as when the engine speed increases and more gas is needed, the pressure decreases, and the spring will push the pressure plate and the spool under the action of its own elasticity, increasing the flow area of the gas, so that the output pressure rises. Conversely, when the engine load decreases and the gas pressure is too high, the high pressure will compress the spring, drive the pressure plate and the spool, reduce the flow area of the gas, and thus reduce the output pressure. At the same time, the lever system can amplify the small deformation of the diaphragm, accurately adjust the position of the spool, and ensure that the dynamic adjustment of the pressure is more accurate.

[0027] The temperature control is achieved by connecting the vehicle cooling system with the water pipe joint. The cooling liquid in the vehicle cooling system enters the cooling channel inside or around the pressure reducer through the water pipe joint. When the Joule-Thomson effect caused by natural gas pressure reduction leads to temperature drop, the cooling liquid absorbs these cold energy. The design of the cooling channel should ensure that the cooling liquid can fully contact the area where low temperature may occur, so as to maintain the temperature inside the pressure reducer within a suitable range and prevent icing.

[0028] The gas after pressure reduction and temperature regulation is output through the gas outlet joint. The position and structure design of the gas outlet joint should ensure that the gas can be smoothly and stably delivered to the air intake system of the vehicle engine. The internal channel should be smooth to avoid excessive resistance to ensure that the engine is provided with gas of suitable pressure and temperature.

[0029] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas pressure reducer for a vehicle, comprising a valve body (1), characterized in that: Water pipe joints (11) are provided on both sides of the bottom of the valve body (1), an air outlet joint (12) is provided in the middle of the bottom of the valve body (1), a safety valve assembly (13) is provided on the right side of the valve body (1), an upper cover (2) is provided at the rear end of the valve body (1), a lower cover (3) is provided at the front end of the valve body (1), and a high-pressure four-way seat (4) is provided on the left side of the valve body (1); A spring 1 (21) is provided inside the upper cover (2), a pressure plate 1 (22) is provided at the front end of the spring 1 (21), a diaphragm 1 (23) is provided at the front end of the pressure plate 1 (22), a pressure plate 2 (24) is provided at the front end of the diaphragm 1 (23), a column (25) is provided at the front end of the pressure plate 2 (24), and a lever (26) is provided at the front end of the column (25); A pressure regulating rod (32) is provided inside the lower cover (3), a spring seat (33) is provided at the rear end of the pressure regulating rod (32), a spring second (34) is provided at the rear end of the spring seat (33), a guide column first (35) is provided at the rear end of the spring second (34), a diaphragm second (37) is provided at the rear end of the guide column first (35), a pressure plate third (36) is provided at the front end of the diaphragm second (37), a valve port connecting rod (38) is provided at the rear end of the valve port connecting rod (38), a valve port sealing seat (39) is provided at the rear end of the front part of the lower cover (3), and a vacuum nozzle (31) is provided at the bottom end of the front part of the lower cover (3).

2. A vehicle gas pressure reducer according to claim 1, characterized in that: A coil (41) is provided at the front end of the high-pressure four-way seat (4), a high-pressure air inlet connector (42) is provided at the bottom of the coil (41), a filter screen (48) is provided at the top of the high-pressure air inlet connector (42), a high-pressure solenoid valve barrel plug (43) is provided at the rear end of the coil (41), a high-pressure solenoid valve barrel body (44) is provided at the rear end of the high-pressure solenoid valve barrel plug (43), a solenoid valve spring (45) is provided at the rear end of the high-pressure solenoid valve barrel body (44), a high-pressure solenoid valve core (46) is provided at the rear end of the solenoid valve spring (45), and a high-pressure solenoid valve pilot head (47) is provided at the rear end of the high-pressure solenoid valve core (46).

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