CN-224214779-U - Pressure reducing valve and gas internal combustion engine circulation system

CN224214779UCN 224214779 UCN224214779 UCN 224214779UCN-224214779-U

Abstract

The utility model discloses a pressure reducing valve and a gas internal combustion engine circulating system, and relates to the technical field of pressure reducing valves. The pressure reducing valve comprises a main valve body and a main valve core. The main valve body is provided with an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air outlet cavity. The main valve core is slidably mounted in the main valve body and separates the air inlet cavity from the air outlet cavity when the main valve core slides to a first separation position. A hot water flow passage is arranged on the main valve body and adjacent to the main valve core, and the hot water flow passage is provided with a liquid inlet connector and a liquid outlet connector. Compared with the prior art, the pressure reducing valve and the gas internal combustion engine circulating system can reduce energy consumption, cost and failure rate.

Inventors

XING GUANG
JIA JIANRONG
CAI JIANPING

Assignees

北京氢合氢诚动力科技发展合伙企业(有限合伙)

Dates

Publication Date: 20260508
Application Date: 20250625

Claims (10)

1. The pressure reducing valve comprises a main valve body and a main valve core, wherein the main valve body is provided with an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air outlet cavity, the main valve core is slidably arranged in the main valve body and is used for separating the air inlet cavity from the air outlet cavity when sliding to a first separation position, and the pressure reducing valve is characterized in that: And a hot water flow passage is arranged on the main valve body and adjacent to the main valve core, and the hot water flow passage is provided with a liquid inlet connector and a liquid outlet connector.
2. The pressure relief valve of claim 1, wherein: The hot water flow passage is surrounded by a ring groove and a main valve core seat, the ring groove is arranged on the inner surface of the main valve body, the notch is positioned on the radial inner side of the main valve core seat, the main valve core seat is fixedly connected with the main valve body, the outer side surface of the main valve core seat seals the notch of the ring groove, and the main valve core is in sealing contact with the main valve core seat when in the first separation position.
3. The pressure relief valve of claim 2, wherein: The main valve core and the main valve core seat are provided with conical surfaces with the same taper, and the two conical surfaces are attached when the main valve core slides to the first partition position.
4. The pressure relief valve of claim 1, wherein: the air outlet cavity is fixedly connected with a pressure sensor, and the pressure sensor is used for detecting the internal pressure of the air outlet cavity.
5. The pressure reducing valve according to any one of claims 1 to 4, wherein: The two ends of the main valve body are respectively provided with a first opening and a second opening along the sliding direction of the main valve core; the valve body is provided with an air inlet cavity, an air outlet cavity, a first opening, a second opening, a first valve seat, a second valve seat, a first valve core, a second valve core, a first valve core and a second valve core, wherein the first opening is communicated with the air inlet cavity, the second opening is communicated with the air outlet cavity, the first opening is fixedly connected with a bottom cover, a main valve spring is arranged between the bottom cover and the main valve core, and the main valve spring is used for providing elasticity for pushing the main valve core to the first partition position; The cavity at one side of the piston is communicated with the air outlet cavity through a through hole arranged on the piston sleeve, and the cavity at the other side of the piston is communicated with the air inlet cavity through an air inlet runner I so as to provide thrust for pushing the main valve core to the main valve spring through air flowing in from the air inlet cavity; The guide valve seat is internally provided with a guide valve core in a sliding manner, the guide valve core cuts off the first air inlet flow channel when sliding to a second cut-off position, one side of the guide valve core is provided with a guide valve spring, the guide valve spring is positioned between the guide valve seat and the guide valve core and used for providing elastic force for pushing the guide valve core to the second cut-off position, and the other side of the guide valve core is provided with a pushing component used for providing pushing force for pushing the guide valve core to the guide valve spring.
6. The pressure relief valve of claim 5, wherein: The piston sleeve has a guide bore for slidably guiding the main valve spool.
7. The pressure relief valve of claim 5, wherein: The pilot valve core seat is fixedly connected in the pilot valve seat, and the pilot valve core is in sealing contact with the pilot valve core seat when the pilot valve core is at the second separation position.
8. The pressure relief valve of claim 7, wherein: The pilot valve core and the pilot valve core seat are provided with conical surfaces with the same taper, and the two conical surfaces are attached when the pilot valve core slides to the second isolation position.
9. The pressure relief valve of claim 5, wherein said push assembly comprises: The adjusting valve seat is fixedly connected with the pilot valve seat and is positioned at one side of the pilot valve core, which is away from the pilot valve spring; A diaphragm clamped between the regulating valve seat and the pilot valve seat; An adjusting spring base positioned in the adjusting valve seat for pressing the diaphragm toward the pilot valve core; The adjusting spring is positioned on one side of the adjusting spring base, which is away from the diaphragm, and is used for providing elastic thrust for pressing the adjusting spring base to the diaphragm; The adjusting screw is in threaded connection with the adjusting valve seat and is used for providing thrust for one end of the adjusting spring, which is away from the adjusting spring base; the adjusting screw cap is in threaded connection with the adjusting seat and covers the part of the adjusting screw extending out of the adjusting valve seat; In the guide valve seat, a cavity body positioned on one side of the diaphragm, which is away from the adjusting valve seat, is communicated with the air outlet cavity through a second air inlet flow passage, and the second air inlet flow passage is mutually independent of the first air inlet flow passage.
10. A gas internal combustion engine circulation system, which is characterized by comprising the pressure reducing valve according to any one of claims 1-9, a gas internal combustion engine, a radiator and a gas storage bottle; The liquid outlet of the radiator is communicated with the liquid inlet of the gas internal combustion engine through a pipeline, the liquid outlet of the gas internal combustion engine is communicated with the liquid inlet joint of the pressure reducing valve through a pipeline, and the liquid outlet joint of the pressure reducing valve is communicated with the liquid inlet of the radiator through a pipeline; The gas outlet of the gas storage bottle is communicated with the gas inlet cavity of the pressure reducing valve through a pipeline, and the gas outlet cavity of the pressure reducing valve is communicated with the gas inlet of the gas internal combustion engine through a pipeline.

Description

Pressure reducing valve and gas internal combustion engine circulation system Technical Field The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve capable of preventing a valve core from being frozen and a gas internal combustion engine circulating system. Background The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by adjusting and automatically keeps the outlet pressure stable by the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, by changing the throttling area, the flow speed and the kinetic energy of fluid are changed to cause different pressure losses, so that the aim of reducing pressure is achieved, and then the pressure fluctuation behind the valve is balanced with the spring force by virtue of the adjustment of a control and regulation system, so that the pressure behind the valve is kept constant within a certain error range. The fluid after decompression absorbs heat because of expansion, the temperature of the valve core and other parts of the pressure reducing valve is reduced, and when the temperature is reduced below zero ℃, water vapor contained in the gas is condensed at the valve core and other parts of the pressure reducing valve, so that the valve core frosts and freezes, and the flow of the gas and the normal operation of the pressure reducing valve are affected. In the prior art, a special electric heating device is mainly used for heating the air inlet pipeline, so that the temperature of the air in the air inlet pipeline is increased, the temperature of the air flowing through the pressure reducing valve is prevented from being reduced to below zero ℃, and the valve core of the pressure reducing valve is prevented from frosting and freezing. The control of the gas temperature in the inlet pipe is realized by controlling the heating power of the heating device. The main disadvantage of this solution is the high energy consumption, cost and failure rate of the electric heating device. Disclosure of utility model The utility model aims to provide a pressure reducing valve and a gas internal combustion engine circulating system, which are used for solving the problems of the related technology and reducing energy consumption, cost and failure rate. In order to achieve the above object, the present utility model provides the following solutions: The utility model discloses a pressure reducing valve, which comprises a main valve body and a main valve core, wherein the main valve body is provided with an air inlet cavity and an air outlet cavity, and the air inlet cavity is communicated with the air outlet cavity; And a hot water flow passage is arranged on the main valve body and adjacent to the main valve core, and the hot water flow passage is provided with a liquid inlet connector and a liquid outlet connector. Preferably, the hot water flow passage is surrounded by a ring groove and a main valve core seat, the ring groove is arranged on the inner surface of the main valve body, the notch is positioned on the radial inner side of the main valve body, the main valve core seat is fixedly connected with the main valve body, the outer side surface of the main valve core seat seals the notch of the ring groove, and the main valve core is in sealing contact with the main valve core seat when in the first separation position. Preferably, the main valve core and the main valve core seat have conical surfaces with the same taper, and the two conical surfaces are attached when the main valve core slides to the first separation position. Preferably, a pressure sensor is fixedly connected to the air outlet cavity, and the pressure sensor is used for detecting the internal pressure of the air outlet cavity. Preferably, in the sliding direction of the main valve core, two ends of the main valve body are respectively provided with an opening I and an opening II; the valve body is provided with an air inlet cavity, an air outlet cavity, a first opening, a second opening, a first valve seat, a second valve seat, a first valve core, a second valve core, a first valve core and a second valve core, wherein the first opening is communicated with the air inlet cavity, the second opening is communicated with the air outlet cavity, the first opening is fixedly connected with a bottom cover, a main valve spring is arranged between the bottom cover and the main valve core, and the main valve spring is used for providing elasticity for pushing the main valve core to the first partition position; The cavity at one side of the piston is communicated with the air outlet cavity through a through hole arranged on the piston sleeve, and the cavity at the other side of the piston is communicated with the air inlet cavity through an air inlet runner I so as to provide thrust for pushing the ma