CN219061868U - Pressure reducer heating system - Google Patents

Abstract

The application provides a pressure reducer heating system, which comprises a gas cylinder, a pressure reducer, an engine, an air compressor, an exhaust pipeline and a whole gas cylinder; the gas cylinder is communicated with the pressure reducer and is configured to convey the natural gas into the pressure reducer; the pressure reducer is communicated with the engine, and is used for reducing the pressure of the natural gas and conveying the natural gas into the engine; the air compressor is communicated with the whole vehicle air bottle through an exhaust pipeline, the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline, and the pressure reducer is provided with a heat exchange inlet and a heat exchange outlet which are communicated with each other; one end of the first exhaust pipeline is communicated with the air compressor, and the other end of the first exhaust pipeline is communicated with the heat exchange inlet; one end of the second exhaust pipeline is communicated with the whole vehicle gas cylinder, and the other end of the second exhaust pipeline is communicated with the heat exchange outlet. The application provides a pressure reducer heating system, heating temperature is high, and the decompression effect is better for the engine operation is more stable, and the fault rate reduces.

Description

Pressure reducer heating system

Technical Field

The application relates to the field of pressure reducer equipment, in particular to a pressure reducer heating system.

Background

The pressure reducer is a special component of a CNG (Compressed Natural Gas ) engine, and can adjust the compressed natural gas pressure from a storage state to about 0.8 MPa. The natural gas is required to absorb heat when it is converted from a high pressure state to a low pressure state, so the pressure reducer needs a continuous heat source to heat it.

At present, most CNG buses adopt a cooling water pressure reducing valve heating system, engine cooling water is led into the pressure reducing valve, and heat is transferred to compressed natural gas through the internal special structure of the pressure reducing valve, so that the compressed natural gas can be decompressed.

However, when the cooling water reducing valve heating system is used for heating the reducer, the stable water temperature is lower, so that the service life of the engine is reduced, and the failure rate is increased.

Disclosure of Invention

In view of the above, the application provides a pressure reducer heating system, which has high heating temperature and better pressure reducing effect, so that the engine operates more stably, and the failure rate is reduced.

In order to achieve the above object, the present application provides the following technical solutions:

the application provides a pressure reducer heating system, which comprises a gas cylinder, a pressure reducer, an engine, an air compressor, an exhaust pipeline and a whole gas cylinder; the gas cylinder is communicated with the pressure reducer and is configured to convey the natural gas into the pressure reducer; the pressure reducer is communicated with the engine, and is used for reducing the pressure of the natural gas and conveying the natural gas into the engine;

the air compressor is communicated with the whole vehicle air bottle through an exhaust pipeline, the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline, and the pressure reducer is provided with a heat exchange inlet and a heat exchange outlet which are communicated with each other; one end of the first exhaust pipeline is communicated with the air compressor, and the other end of the first exhaust pipeline is communicated with the heat exchange inlet; one end of the second exhaust pipeline is communicated with the whole vehicle gas cylinder, and the other end of the second exhaust pipeline is communicated with the heat exchange outlet.

The reducer heating system comprises a gas cylinder, a reducer, an engine, an air compressor, an exhaust pipeline and a whole gas cylinder; the gas cylinder stores natural gas, and can convey the natural gas to the pressure reducer; while the pressure reducer is capable of reducing the pressure of the natural gas and delivering the natural gas to the engine. Meanwhile, the air compressor is communicated with the whole vehicle air bottle through an exhaust pipeline, the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline, and a heat exchange inlet and a heat exchange outlet which are communicated are arranged on the pressure reducer; the air compressor is communicated with the heat exchange inlet through a first exhaust pipeline, and the heat exchange outlet is communicated with the whole vehicle air bottle through a second exhaust pipeline. Therefore, when the pressure reducer heating system is used, the temperature of air can rise after the air is compressed in the air compressor, so that high-temperature hot air is formed, and flows in from the heat exchange inlet and flows out from the heat exchange outlet; the high-temperature hot gas can continuously heat the pressure reducer in the flowing process. Compare in utilizing engine cooling water to heat, the heating temperature of this application provided pressure reducer heating system is higher, and the decompression effect is better to make the engine operation more stable, the fault rate reduces.

In one possible implementation, the device further comprises a natural gas inlet pipe, and the gas cylinder is communicated with the pressure reducer through the natural gas inlet pipe.

Therefore, natural gas in the gas cylinder can be conveyed to the pressure reducer through the natural gas inlet pipe, and the pressure reducer is convenient to decompress the natural gas.

In one possible implementation, the system further comprises a valve switch, wherein the valve switch is arranged on the natural gas inlet pipe.

Therefore, by controlling the working state of the valve switch, whether the natural gas in the gas cylinder can be conveyed into the pressure reducer through the natural gas inlet pipe can be controlled.

In one possible implementation, the engine further comprises a natural gas outlet pipe, and the pressure reducer is communicated with the engine through the natural gas outlet pipe.

Thus, the natural gas in the pressure reducer can be conveyed to the engine through the natural gas outlet pipe, and the natural gas can perform combustion work in the engine.

In one possible implementation, the system further comprises a metering valve, wherein the metering valve is arranged on the natural gas outlet pipe and is used for controlling the flow rate of the natural gas in the natural gas outlet pipe.

Thus, the metering valve can control the flow of natural gas in the natural gas outlet pipe, so that the output power of the engine can be adjusted.

In one possible implementation, the system further comprises a mixer mounted on the natural gas outlet pipe, the mixer being located between the metering valve and the engine.

Thus, the natural gas and the air can be fully mixed by the mixer, so that the normal operation of the engine is ensured.

In one possible implementation, the mixer is provided with a natural gas inlet, an air inlet and an air outlet;

the natural gas inlet is connected with the metering valve through a natural gas outlet pipe, the gas outlet is connected with the engine through a natural gas outlet pipe, and the air inlet is used for inputting air.

Thus, the existence of the air inlet, the air inlet and the air outlet can ensure that the natural gas and the air are fully mixed in the mixer and output to the engine.

In one possible embodiment, a dryer is provided on the second exhaust line, which dryer serves to dry the air in the second exhaust line.

Thus, the dryer can dry and clean the compressed air in the second exhaust pipeline and discharge the excessive air pressure to prevent water accumulation in the second exhaust pipeline.

In one possible implementation, the engine further comprises an exhaust gas discharge pipe, and the exhaust gas discharge pipe is communicated with the engine.

In this way, the exhaust gas discharge pipe communicates with the engine, and the presence of the exhaust gas discharge pipe facilitates the discharge of exhaust gas generated in the engine.

In one possible implementation, the exhaust gas purifier is further included, and the exhaust gas purifier is mounted on the exhaust gas discharge pipe.

Like this, exhaust gas purifier's existence can avoid exhaust emission to cause the pollution to the environment, promotes the environmental friendliness of pressure reducer heating system.

The construction of the present application, as well as other objects and advantages thereof, will be more readily understood from the description of the specific embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of a pressure reducer heating system provided in an embodiment of the present application;

FIG. 2 is a block diagram of a pressure reducer provided in an embodiment of the present application;

FIG. 3 is a block diagram of a mixer provided in an embodiment of the present application;

FIG. 4 is a graph of water temperature change at the engine water outlet of a bus;

fig. 5 is a graph showing the change in exhaust temperature of the air compressor of the bus.

Reference numerals illustrate:

100-gas cylinder;

200-pressure reducer;

210-heat exchange inlet;

220-heat exchange outlet;

230-input port;

240-outlet;

300-engine;

400-air compressor;

500-exhaust line;

510-a first exhaust line;

520-a second exhaust line;

600-whole car gas cylinder;

700-natural gas inlet pipe;

800-valve switch;

900-a natural gas outlet pipe;

1000-metering valve;

1100-a mixer;

1101-natural gas inlet;

1102-air inlet;

1103-gas outlet;

1200-dryer;

1300-exhaust gas discharge pipe;

1400-exhaust gas purifier.

Detailed Description

With the increasing pressure of petroleum shortage and the increasing prominence of global environmental pollution, there is an urgent need to find more economical, clean and safe energy sources to replace petroleum fuels. CNG refers to gaseous natural gas compressed to a pressure of greater than or equal to 10MPa and no greater than 25MPa, which is pressurized and stored in a container in the gaseous state. CNG is an ideal alternative energy source for vehicles, and the application technology thereof has been developed for decades. The method has the characteristics of low cost, high benefit, no pollution, safe and convenient use and the like, and increasingly shows strong development potential. The pressure reducer is a special part of the CNG engine, and the pressure of the compressed natural gas is regulated to about 0.8MPa from a storage state, so that the pressure reducer needs to absorb heat when the natural gas is converted from a high-pressure state to a low-pressure state, and a continuous heat source is needed to heat the pressure reducer.

At present, most CNG buses adopt cooling water reducing valve heating systems, engine cooling water is led into the reducing valve, and heat is transferred to compressed natural gas through the internal special structure of the reducing valve, so that the compressed natural gas can be reduced in pressure. Therefore, in the pressure reducer, a water inlet and a water outlet are generally provided, and a water path is provided inside the pressure reducer, and engine cooling water is introduced into the water path, so as to perform heat exchange during pressure reduction. In cold seasons, the water temperature of the engine is lower when the engine is just started, and the engine can be accelerated to run after idling for a period of time, so that frosting or icing caused by untimely heat supply of the pressure reducer is prevented.

However, when the pressure reducer is heated by the cooling water pressure reducing valve heating system, the stable water temperature of the cooling water pressure reducing valve heating system is low; when the stable water temperature is lower, the decompression effect of the decompression device can be affected, if the natural gas cannot be fully decompressed and reaches a preset pressure value, the service life of the engine can be reduced, and the failure rate of the engine is increased. In addition, when the cooling water reducing valve heating system is adopted to heat the pressure reducer, the oil consumption of the whole vehicle can be increased.

Based on the above problems, the embodiments of the present application provide a heating system for a pressure reducer, including a gas cylinder, a pressure reducer, an engine, an air compressor, an exhaust pipeline and a whole gas cylinder; the gas cylinder stores natural gas, and can convey the natural gas to the pressure reducer; while the pressure reducer is capable of reducing the pressure of the natural gas and delivering the natural gas to the engine. Meanwhile, the air compressor is communicated with the whole vehicle air bottle through an exhaust pipeline, the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline, and a heat exchange inlet and a heat exchange outlet which are communicated are arranged on the pressure reducer; the air compressor is communicated with the heat exchange inlet through a first exhaust pipeline, and the heat exchange outlet is communicated with the whole vehicle air bottle through a second exhaust pipeline. Therefore, when the pressure reducer heating system is used, the temperature of air can rise after the air is compressed in the air compressor, so that high-temperature hot air is formed, and flows in from the heat exchange inlet and flows out from the heat exchange outlet; the high-temperature hot gas can continuously heat the pressure reducer in the flowing process. Compare in utilizing engine cooling water to heat, the heating temperature of this application provided pressure reducer heating system is higher, and the decompression effect is better to make the engine operation more stable, the fault rate reduces.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The following describes the technical solution of the present application and how the technical solution of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

The structure of the heating system for a pressure reducer according to the embodiment of the present application will be described in detail with reference to fig. 1 to 5.

As shown in fig. 1, the present application provides a pressure reducer heating system, which includes a gas cylinder 100, a pressure reducer 200, an engine 300, an air compressor 400, an exhaust pipe 500, and a whole gas cylinder 600. Wherein the gas cylinder 100 stores natural gas therein, the gas cylinder 100 is in communication with the pressure reducer 200, and the gas cylinder 100 is configured to deliver the natural gas into the pressure reducer 200. Meanwhile, the pressure reducer 200 is in communication with the engine 300, and the pressure reducer 200 is used to reduce the pressure of the natural gas and to deliver the natural gas into the engine 300, and the natural gas is burned in the engine 300, so that the vehicle can be driven to move. In addition, in the vehicle air brake system, the air compressor 400 is an indispensable brake air source, and the air compressor 400 can be used to supply compressed air having a certain pressure, which can be used for an air brake and an auxiliary air system.

The air compressor 400 is communicated with the whole vehicle air bottle 600 through an exhaust pipeline 500, and the exhaust pipeline 500 comprises a first exhaust pipeline 510 and a second exhaust pipeline 520; as shown in fig. 2, the pressure reducer 200 is provided with a heat exchange inlet 210 and a heat exchange outlet 220 which are communicated with each other; one end of the first exhaust pipe 510 is communicated with the air compressor 400, and the other end of the first exhaust pipe 510 is communicated with the heat exchange inlet 210; one end of the second exhaust pipe 520 is connected to the whole vehicle gas cylinder 600, and the other end of the second exhaust pipe 520 is connected to the heat exchange outlet 220. Air can be input into the air compressor 400, the air compressor 400 can compress the air, and the temperature of the air can rise after the air is compressed; the compressed air can be delivered to the heat exchange inlet 210 through the first exhaust pipe 510, and enter the interior of the pressure reducer 200 from the heat exchange inlet 210, and finally flow out from the heat exchange outlet 220; the air can exchange heat with the pressure reducer 200 while flowing inside the pressure reducer 200. The air flowing out of the heat exchange outlet 220 flows into the whole air cylinder 600, and the whole air cylinder 600 is used for storing compressed air.

Thus, in use of the reducer heating system of the present application, the temperature of the air will rise after being compressed in the air compressor 400, thereby forming high temperature hot air, which flows in from the heat exchange inlet 210 and out from the heat exchange outlet 220; the high temperature hot gas can continuously heat the pressure reducer 200 during the flow. Compare in utilizing engine cooling water to heat, the heating temperature of the pressure reducer heating system that this application provided is higher, and the decompression effect is better to make the operation of engine 300 more stable, the fault rate reduces.

Next, the structure of the pressure reducer heating system of the present application will be further described with reference to fig. 1 to 3.

In the embodiment of the present application, as shown in fig. 1, the reducer heating system further includes a natural gas intake pipe 700, and the gas cylinder 100 is in communication with the reducer 200 through the natural gas intake pipe 700. One end of the natural gas intake pipe 700 is communicated with the gas cylinder 100, and the other end of the natural gas intake pipe 700 is communicated with the input port 230 of the pressure reducer 200.

So set up, natural gas in gas cylinder 100 can be carried to pressure reducer 200 through natural gas intake pipe 700, and pressure reducer 200 is convenient for depressurize natural gas.

Further, the pressure reducer heating system further includes a valve switch 800, wherein the valve switch 800 is disposed on the natural gas intake pipe 700. When the valve switch 800 is in an open state, natural gas in the gas cylinder 100 can be delivered to the pressure reducer 200 through the natural gas inlet pipe 700; when the valve switch 800 is in the closed state, natural gas in the gas cylinder 100 cannot be delivered to the pressure reducer 200.

By controlling the operation state of the valve switch 800, it is possible to control whether or not the natural gas in the gas cylinder 100 can be supplied to the pressure reducer 200 through the natural gas inlet pipe 700.

In the embodiment of the present application, as shown in fig. 1, the reducer heating system further includes a natural gas outlet pipe 900, and the reducer 200 is in communication with the engine 300 through the natural gas outlet pipe 900. One end of the natural gas outlet pipe 900 is communicated with the output port 240 of the pressure reducer 200, and the other end of the natural gas outlet pipe 900 is communicated with the engine 300.

With this arrangement, natural gas in the pressure reducer 200 can be supplied to the engine 300 through the natural gas outlet pipe 900, and the natural gas can perform combustion work in the engine 300.

Further, the reducer heating system further comprises a metering valve 1000, the metering valve 1000 is installed on the natural gas outlet pipe 900, and the metering valve 1000 is used for controlling the flow of natural gas in the natural gas outlet pipe 900. When the vehicle needs to output high power, the natural gas flow output in the natural gas outlet pipe 900 is increased by the control of the metering valve 1000, so that more natural gas can enter the engine 300.

With this arrangement, the presence of the metering valve 1000 can control the flow rate of natural gas in the natural gas outlet pipe 900, and thus can adjust the output power of the engine 300.

Further, as shown in fig. 3, the pressure reducer heating system further includes a mixer 1100, the mixer 1100 is mounted on the natural gas outlet pipe 900, and the mixer 1100 is located between the metering valve 1000 and the engine 300. Under the control of the metering valve 1000, natural gas in the natural gas outlet pipe 900 can flow into the mixer 1100, and after the natural gas is mixed with air in the mixer 1100, the natural gas can be input into the engine 300.

So configured, the presence of the mixer 1100 enables adequate mixing of the natural gas and air to ensure proper operation of the engine 300.

Wherein, the mixer 1100 is provided with a natural gas inlet 1101, an air inlet 1102 and an air outlet 1103; the natural gas inlet 1101 is connected to the metering valve 1000 through the natural gas outlet pipe 900, the air outlet 1103 is connected to the engine 300 through the natural gas outlet pipe 900, and the air inlet 1102 is used for inputting air. Natural gas flowing through the metering valve 1000 can flow into the natural gas inlet 1101 through the natural gas outlet pipe 900, air can flow into the air inlet 1102, natural gas and air are mixed in the mixer 1100, and the mixed gas is output from the gas outlet 1103 into the engine 300.

Thus, the presence of the air inlet, the air inlet 1102, and the air outlet 1103 ensures that the natural gas and air are thoroughly mixed in the mixer 1100 and output to the engine 300.

In the embodiment of the present application, the second exhaust pipe 520 is provided with a dryer 1200, and the dryer 1200 is used for drying the air in the second exhaust pipe 520.

So configured, the dryer 1200 is capable of drying and cleaning the compressed air in the second exhaust duct 520 and discharging an excessive air pressure to prevent water accumulation in the second exhaust duct 520.

In the present embodiment, the stress-reducer heating system further includes an exhaust gas discharge pipe 1300, and the exhaust gas discharge pipe 1300 communicates with the engine 300. Combustion of natural gas in engine 300 produces exhaust gas, which can be expelled from exhaust stack 1300.

So configured, exhaust gas discharge pipe 1300 communicates with engine 300, and the presence of exhaust gas discharge pipe 1300 facilitates the discharge of exhaust gas generated in engine 300.

Further, the pressure reducer heating system further includes an exhaust gas purifier 1400, and the exhaust gas purifier 1400 is installed on the exhaust gas discharge pipe 1300. When the exhaust gas is discharged from the exhaust gas discharge pipe 1300, the exhaust gas purifier 1400 can purify the exhaust gas, and the purified exhaust gas is discharged to the outside.

So set up, the existence of exhaust gas purifier 1400 can avoid exhaust emission to cause the pollution to the environment, promotes the environmental friendliness of pressure reducer heating system.

The heating effect and advantages of the reducer heating system of the present application will be further described in one specific embodiment with reference to fig. 4 and 5.

When CNG buses adopt a cooling water pressure reducing valve heating system, after cooling water is heated by an engine, the cooling water of the engine is introduced into the pressure reducing valve, and heat is transferred to the compressed natural gas through the internal special structure of the pressure reducing valve, so that the compressed natural gas is depressurized. As shown in fig. 4, a graph of water temperature change at the water outlet of a conventional CNG bus engine is shown. After the pressure reducer heating system is adopted, the air compressor 400 of the bus can compress air, the temperature of the compressed air rises and can be discharged from the air compressor 400, and fig. 5 shows an exhaust temperature change diagram of the air compressor 400 of the corresponding bus.

In the actual testing process, the ambient temperature is about 15 ℃, as can be seen in fig. 4 and 5: the exhaust temperature of the air compressor 400 is between 100 ℃ and 125 ℃, the temperature at the water outlet of the engine 300 is between 79 ℃ and 84 ℃, and the temperature of the exhaust air compressor is more than 20 ℃ compared with the temperature at the same time. Thus, it is understood that the heating temperature when the pressure reducer 200 is heated is higher after the pressure reducer heating system of the present application is used, and thus, the heat absorption and depressurization efficiency of CNG is also improved.

In addition, if the cooling water pressure reducing valve heating system is used when the vehicle is used in winter, the water temperature of the engine 300 rises slowly, resulting in a long water temperature rising time during which the heating and pressure reducing effects of the compressed natural gas are poor. With the pressure reducer heating system of the present application, the exhaust temperature of the air compressor 400 can reach 80 ℃ or higher immediately after the vehicle is started. The high-temperature gas discharged by the air compressor 400 is used as a heat source to realize the heating and decompression of the compressed natural gas, so that the traditional cooling water decompression valve heating system is replaced; because the exhaust temperature of the air compressor 400 is higher than the temperature of engine cooling water, the heating and decompression effects of compressed natural gas are better, the engine 300 operates more stably, and the failure rate is lower.

When the bus is braked and started frequently, the load rate of the air compressor 400 is higher, so that the exhaust temperature of the air compressor 400 is also increased in the whole vehicle running process, and the temperature of an exhaust outlet can reach 200 ℃ when the temperature of the exhaust outlet is highest; the compressed gas discharged from the air compressor 400 is generally dried by the dryer 1200, and the allowable temperature of the dryer 1200 is generally about 65 ℃. If the cooling water reducing valve heating system is adopted, the compressed gas discharged from the air compressor 400 is naturally radiated only through the pipeline, so that the length of the exhaust pipeline 500 of the air compressor 400 is required to be more than 3.6m for sufficient radiation, and the exhaust pipeline 500 is generally arranged in a spiral structure; however, many of the exhaust pipes 500 on buses are not arranged in a sufficient length, resulting in insufficient heat dissipation of the compressed gas, and the temperature of the compressed gas passing through the dryer 1200 may be greater than 65 ℃, which may affect the service life of the dryer 1200. After the pressure reducer heating system is adopted, the compressed gas discharged by the air compressor 400 is subjected to heat release through the pressure reducing valve, and the temperature of the compressed gas after heat release is greatly reduced.

In addition, compare in exhaust pipe 500 for helical structure, the exhaust pipe 500 of this application becomes single-pipe line arrangement, has avoided the heat radiation, better realization radiating effect. The reducer heating system can also shorten a cooling pipeline between the air compressor 400 and the whole-vehicle air cylinder 600; meanwhile, a water outlet and a cooling water channel on the engine 300 are omitted, the cost of the engine 300 is reduced, and the reliability of the whole vehicle is improved. Because the cooling water heating mode in the prior art is canceled, the power consumption of the water pump of the engine 300 is reduced, the economy of the vehicle is improved, and the failure rate of the cooling system is reduced. When the air compressor heating system is used in a high-temperature area in summer, the air compressor 400 exhaust temperature can be reduced, and the service life of the dryer 1200 is prolonged.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, in communication between two elements, or in an interaction relationship between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The references herein to devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims of this application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The pressure reducer heating system is characterized by comprising a gas cylinder, a pressure reducer, an engine, an air compressor, an exhaust pipeline and a whole gas cylinder; the gas cylinder having natural gas stored therein, the gas cylinder in communication with the pressure reducer, the gas cylinder configured to deliver the natural gas into the pressure reducer; the pressure reducer is communicated with the engine and is used for reducing the pressure of the natural gas and conveying the natural gas into the engine;

the air compressor is communicated with the whole vehicle air cylinder through the exhaust pipeline, the exhaust pipeline comprises a first exhaust pipeline and a second exhaust pipeline, and the pressure reducer is provided with a heat exchange inlet and a heat exchange outlet which are communicated with each other; one end of the first exhaust pipeline is communicated with the air compressor, and the other end of the first exhaust pipeline is communicated with the heat exchange inlet; one end of the second exhaust pipeline is communicated with the whole vehicle gas cylinder, and the other end of the second exhaust pipeline is communicated with the heat exchange outlet.

2. The pressure reducer heating system of claim 1, further comprising a natural gas inlet conduit through which the gas cylinder communicates with the pressure reducer.

3. The pressure reducer heating system of claim 2, further comprising a valve switch disposed on the natural gas intake pipe.

4. The pressure reducer heating system of claim 1, further comprising a natural gas outlet conduit, wherein the pressure reducer is in communication with the engine through the natural gas outlet conduit.

5. The pressure reducer heating system of claim 4, further comprising a metering valve mounted on the natural gas outlet conduit, the metering valve for controlling the flow of natural gas in the natural gas outlet conduit.

6. The pressure reducer heating system of claim 5, further comprising a mixer mounted on the natural gas outlet pipe, the mixer located between the metering valve and the engine.

7. The pressure reducer heating system of claim 6, wherein the mixer is provided with a natural gas inlet, an air inlet and an air outlet;

the natural gas inlet is connected with the metering valve through the natural gas outlet pipe, the gas outlet is connected with the engine through the natural gas outlet pipe, and the air inlet is used for inputting air.

8. The pressure reducer heating system of any of claims 1-7, wherein a dryer is provided on the second exhaust line, the dryer being configured to dry air in the second exhaust line.

9. The pressure reducer heating system of any of claims 1-7, further comprising an exhaust gas discharge conduit in communication with the engine.

10. The pressure reducer heating system of claim 9, further comprising an exhaust gas purifier mounted on the exhaust gas discharge pipe.

Images