Fuel pressure-equalizing air inlet distribution system for multiple internal combustion engines

Abstract

The utility model belongs to the technical field of power machinery, and particularly relates to a fuel pressure-equalizing air inlet distribution system for multiple internal combustion engines, which comprises the internal combustion engines, a main mother pipe, branch mother pipes, blow-down pipes, explosion-proof mechanisms, pressure relief mechanisms and a control system. The anti-explosion pressure relief device for the internal combustion engine set has the advantages that the air inlet pressure of all the internal combustion engine sets is balanced, and the stability of safe operation of the sets is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power machinery, in particular to a fuel pressure-equalizing intake distribution system for multiple internal combustion engines. Background Art

[0002] With the accelerated development of industrialization and urbanization, the demand for resources has increased, and the market share of internal combustion engine generator sets has increased significantly. Internal combustion engine generator sets that use coal mine gas, natural gas, coal gas, etc. as fuel have relatively low pressure heads due to the conditions of fuel production or preparation. If the fuel transportation process increases the amount of fuel pressure head, resulting in a waste of equipment investment, the conventional method is to use the pressure head produced or prepared by the fuel itself.

[0003] As the amount of fuel in such projects continues to increase, and at the same time, it is limited by the output and load regulation of a single unit, resulting in the need to arrange more than a dozen or dozens of internal combustion engines in a single row of related projects. If the intake pipes of the internal combustion engines are connected in sequence on the mother pipe, the intake pressure and intake volume of the first and last internal combustion engines will be quite different. The units located relatively far back have poor operating stability and large load fluctuations, which affect the safe operation of the units. The more internal combustion engines are arranged in a single row, the more obvious this situation will be. Utility Model Content

[0004] The utility model aims at solving the above problems and specifically designs a fuel pressure-equalizing intake distribution system for multiple internal combustion engines, so as to balance the intake pressure of each internal combustion engine unit and improve the stability of safe operation of the units.

[0005] To achieve the above-mentioned purpose, the utility model provides a fuel pressure-equalizing intake distribution system for multiple internal combustion engines, including an internal combustion engine, a main pipe, a dividing pipe, a vent pipe, an explosion-proof mechanism, a pressure relief mechanism and a control system. There are multiple internal combustion engines, which are arranged in parallel and evenly divided into multiple groups. Each group of internal combustion engines is connected to the main pipe through the dividing pipe, and the vent pipe is connected to the main pipe. The explosion-proof mechanism and the pressure relief mechanism are both arranged on the main pipe and are communicatively connected to the control system.

[0006] Preferably, the explosion-proof mechanism includes a combustible gas leak monitor and an emergency shut-off valve. The combustible gas leak monitor is fixedly installed on the outside of the pipe wall of the main mother pipe and is communicatively connected to the input end of the control system. The emergency shut-off valve is connected to the main mother pipe through a flange and is communicatively connected to the output end of the control system.

[0007] Preferably, the pressure relief mechanism includes a pressure gauge and a relief valve, the pressure gauge is fixedly connected to the main main pipe and is communicatively connected to the input end of the control system, and the relief valve is connected to the vent pipe via a flange and is communicatively connected to the output end of the control system.

[0008] Preferably, the main main pipe is also fixedly mounted with a flame arrester.

[0009] In summary, the utility model has the following advantages and beneficial technical effects:

[0010] 1. In the utility model, the fuel transportation safety guarantee measures are all installed on the main mother pipe, and the sub-mother pipe only plays the role of evenly distributing the fuel, effectively balancing the intake pressure of each internal combustion unit, reducing the load fluctuation of each internal combustion unit, especially the unit arranged at the end, and improving the stability of the safe operation of the unit.

[0011] 2. The utility model utilizes the interlock of the combustible gas leakage monitor and the emergency shut-off valve to form a safety explosion-proof protection measure. When the instrument detects a combustible gas leak, it automatically and quickly closes the main gas supply valve to cut off the gas supply, thereby preventing and resolving major safety hazards from the source and further strengthening the safe production of gas equipment.

[0012] 3. The utility model utilizes the interlocking of the pressure gauge and the relief valve to monitor the pipeline gas pressure in real time as a safety warning measure for pipeline transportation of flammable and explosive gases. When the pressure in the main pipe exceeds the set value due to some reason, a certain amount of gas is discharged to the outside through the relief valve to prevent the occurrence of vicious accidents in time, thereby ensuring the safe operation of the unit.

[0013] 4. The flame arrester is used to prevent the flame from spreading between equipment and pipelines, thereby ensuring the safety of life and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a schematic diagram of fuel transmission of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the utility model.

[0017] The reference numerals in the accompanying drawings are:

[0018] 1. Internal combustion engine; 2. Main pipe; 3. Denominator pipe; 4. Vent pipe;

[0019] 5. Explosion-proof mechanism; 51. Combustible gas leakage monitor; 52. Emergency shut-off valve;

[0020] 6. Pressure relief mechanism; 61. Pressure gauge; 62. Release valve; 7. Flame arrester. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-Figure 2The utility model is further described in detail:

[0022] like Figure 1 As shown, this embodiment discloses a fuel pressure-equalizing intake distribution system for multiple internal combustion engines, including an internal combustion engine 1, a main pipe 2, a denominator pipe 3, a vent pipe 4, an explosion-proof mechanism 5, a pressure relief mechanism 6 and a control system. There are multiple internal combustion engines 1, which are arranged in parallel along the main pipe 2 and are evenly divided into two groups. The two groups of internal combustion engines 1 are each connected to a denominator pipe 3, and the denominator pipes 3 are all connected to the main pipe 2.

[0023] like Figure 2 As shown, the explosion-proof mechanism 5 and the pressure relief mechanism 6 are both installed on the main main pipe 2 and are communicatively connected to the control system, which is a PLC controller; the explosion-proof mechanism 5 includes a combustible gas leakage monitor 51 and an emergency shut-off valve 52, the combustible gas leakage monitor 51 is fixedly installed outside the pipe wall of the main main pipe 2, and is communicatively connected to the input port of the PLC controller, the emergency shut-off valve 52 is connected to the main main pipe 2 through a flange, and the valve ports on both sides are connected to the pipeline of the main main pipe 2, and are communicatively connected to the output port of the PLC controller; the pressure relief mechanism 6 includes a pressure gauge 61 and a relief valve 62, the pressure gauge 61 is threadedly connected to the pipe wall of the main main pipe 2, and is communicatively connected to the input port of the PLC controller, the relief valve 62 is connected to the vent pipe 4 through a flange, and the valve ports on both sides are connected to the pipeline of the vent pipe 4, and are communicatively connected to the output port of the PLC controller; the main main pipe 2 is also fixedly installed with a flame arrester 7, and the shell of the flame arrester 7 is connected to the main main pipe 2 through a flange.

[0024] The working principle of the fuel pressure equalizing intake distribution system for multiple internal combustion engines of the utility model is:

[0025] 1. This system includes an internal combustion engine 1, a main pipe 2, a denominator pipe 3, a vent pipe 4, an explosion-proof mechanism 5, a pressure relief mechanism 6 and a control system. There are multiple internal combustion engines 1, which are arranged in parallel along the main pipe 2 and are evenly divided into two groups. The two groups of internal combustion engines 1 are each connected to a denominator pipe 3, and the denominator pipes 3 are all connected to the main pipe 2. The explosion-proof mechanism 5 and the pressure relief mechanism 6 are both installed on the main pipe 2 and are communicated with the control system. The control system is a PLC controller; gas, natural gas, coal gas and other fuels are injected from the main pipe 2 and distributed to the internal combustion engine 1 through the denominator pipe 3 to achieve even distribution of gas.

[0026] 2. The explosion-proof mechanism 5 includes a combustible gas leakage monitor 51 and an emergency shut-off valve 52. The combustible gas leakage monitor 51 is fixedly installed on the outside of the pipe wall of the main main pipe 2 and is communicatively connected to the input port of the PLC controller. The emergency shut-off valve 52 is connected to the main main pipe 2 through a flange. The valve ports on both sides are connected to the pipeline of the main main pipe 2 and are communicatively connected to the output port of the PLC controller. The combustible gas leakage monitor 51 detects the gas concentration in the environment surrounding the main main pipe 2. When the concentration value detected exceeds the safe range, the feedback signal is given to the control system. The control system receives the signal and sends a command to the emergency shut-off valve 52 to close the gas supply valve and cut off the gas supply, thereby realizing the safety and explosion-proof of the explosion-proof mechanism 5.

[0027] 3. The pressure relief mechanism 6 includes a pressure gauge 61 and a relief valve 62. The pressure gauge 61 is threadedly connected to the pipe wall of the main main pipe 2 and is communicatively connected to the input port of the PLC controller. The relief valve 62 is connected to the vent pipe 4 through a flange. The valve ports on both sides are connected to the pipeline of the vent pipe 4 and are communicatively connected to the output port of the PLC controller. The pressure gauge 61 uses the sensitive element in the gauge to generate elastic deformation, and transmits the pressure deformation to the pointer. The pressure value of the main main pipe 2 pipeline is accurately displayed by the rotation of the pointer. When the pressure value exceeds the safety range, the control system outputs a command to control the relief valve 62 to open, connecting the main main pipe 2 and the gas channel of the vent pipe 4, so as to realize the explosion relief and release of the gas.

[0028] 4. The main main pipe 2 is also fixedly installed with a flame arrester 7, and the shell of the flame arrester 7 is connected to the main main pipe 2 through a flange; the filter element of the flame arrester 7 is composed of a non-combustible solid material with many fine pores through which gas can pass. The filter element is used to prevent the spread of flames in the main main pipe 2, thereby increasing safety protection measures.

[0029] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fuel pressure equalizing intake distribution system for multiple internal combustion engines, characterized in that: It includes an internal combustion engine, a main pipe, a denominator pipe, a vent pipe, an explosion-proof mechanism, a pressure relief mechanism and a control system. There are multiple internal combustion engines, which are arranged in parallel and evenly divided into multiple groups. Each group of internal combustion engines is connected to the main pipe through the denominator pipe, and the vent pipe is connected to the main pipe. The explosion-proof mechanism and the pressure relief mechanism are both arranged on the main pipe and are communicatively connected to the control system.

2. A fuel pressure equalizing intake distribution system for multiple internal combustion engines according to claim 1, characterized in that: The explosion-proof mechanism includes a combustible gas leakage monitor and an emergency shut-off valve. The combustible gas leakage monitor is fixedly installed outside the pipe wall of the main main pipe and is communicatively connected to the input end of the control system. The emergency shut-off valve is connected to the main main pipe through a flange and is communicatively connected to the output end of the control system.

3. A fuel pressure equalizing intake distribution system for multiple internal combustion engines according to claim 2, characterized in that: The pressure relief mechanism includes a pressure gauge and a relief valve. The pressure gauge is fixedly connected to the main main pipe and is communicatively connected to the input end of the control system. The relief valve is connected to the vent pipe through a flange and is communicatively connected to the output end of the control system.

4. A fuel pressure equalizing intake distribution system for multiple internal combustion engines according to claim 3, characterized in that: The main main pipe is also fixedly mounted with a flame arrester.

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