High-temperature electromagnetic valve group

Abstract

The embodiment of the utility model relates to the technical field of electromagnetic valves, and discloses a high-temperature electromagnetic valve group. The high-temperature electromagnetic valve set comprises a plurality of electromagnetic valves, a plurality of main valves, a high-temperature fuel oil channel, a cold oil channel and a first channel. The plurality of main valves are respectively connected with the plurality of electromagnetic valves one by one, each electromagnetic valve comprises an electromagnetic valve upper valve seat, an electromagnetic valve lower valve seat, an electromagnetic valve upper valve core and an electromagnetic valve lower valve core, each electromagnetic valve is connected with an electromagnetic valve upper channel and an electromagnetic valve lower channel, and each main valve comprises a main valve pilot cavity and a main valve piston; and the high-temperature fuel oil channel comprises a high-temperature fuel oil inlet and a plurality of high-temperature fuel oil outlets, high-temperature fuel oil is introduced into inner cavities of the main valves through the high-temperature fuel oil inlet, and when the electromagnetic valves are powered off, the main valve pistons move upwards under the pressure action of the high-temperature fuel oil, the main valves are opened, and the high-temperature fuel oil flows out through the high-temperature fuel oil outlets. According to the device provided by the embodiment of the invention, the oil consumption of the high-temperature electromagnetic valve group can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of solenoid valves, and particularly to a high-temperature solenoid valve group. Background Art

[0002] With the rapid development of modern technology, industrial equipment is evolving towards higher parameterization and larger scale. In fields such as thermal power, nuclear power, aerospace, petrochemical, etc., in the face of extremely complex working environments such as high temperature and high pressure, the technical requirements for various unit equipment have also increased accordingly. As a key control component in the pipeline system, the high-temperature solenoid valve group is playing an increasingly important role in these complex working conditions due to its excellent performance and reliability.

[0003] Currently, the high-temperature solenoid valve group usually adopts a pilot-operated solenoid valve to achieve the switching function. The pilot-operated solenoid valve adjusts the movement of the main valve by the opening and closing of the pilot oil circuit, thereby realizing the opening and closing of the valve. However, due to the incompressible property of the liquid, in order to maintain the pressure difference in the system, it is usually necessary for the fuel to flow continuously to maintain the normal operation of the valve. This design leads to continuous leakage of the fuel, which not only increases the fuel consumption but also may have an impact on the environment. Therefore, how to reduce the fuel consumption of the high-temperature solenoid valve group is an important issue. Summary of the Utility Model

[0004] The purpose of the embodiments of the present application is to provide a high-temperature solenoid valve group that can reduce the fuel consumption of the high-temperature solenoid valve group.

[0005] To solve the above technical problems, the embodiments of the present application provide a device, which includes a plurality of solenoid valves, a plurality of main valves, a high-temperature fuel channel, a cold oil channel, and a first channel. The plurality of main valves are respectively connected to the plurality of solenoid valves one by one. Each solenoid valve includes a solenoid valve upper valve seat, a solenoid valve lower valve seat, a solenoid valve upper valve core, and a solenoid valve lower valve core. Each solenoid valve is connected with a solenoid valve upper channel and a solenoid valve lower channel. Each main valve includes a main valve pilot chamber and a main valve piston; the high-temperature fuel channel includes a high-temperature fuel inlet and a plurality of high-temperature fuel outlets. The high-temperature fuel is introduced into the inner cavities of the plurality of main valves through the high-temperature fuel inlet. When the plurality of solenoid valves are powered off, the plurality of main valve pistons move upward under the pressure of the high-temperature fuel, and the plurality of main valves open, and the high-temperature fuel flows out through the plurality of high-temperature fuel outlets; the cold oil channel includes a cold oil inlet and a cold oil outlet. The cold oil is used to control the opening and closing of the plurality of main valves. When the plurality of solenoid valves are powered on, the plurality of solenoid valves move upward, the cold oil enters the plurality of main valve pilot chambers through the plurality of solenoid valve lower channels, the plurality of main valve pistons move downward, and the plurality of main valves close; the first channel is connected to the plurality of solenoid valve upper channels. One end of the first channel is provided with a first outlet, and the first outlet is used to release the air in the plurality of main valve pilot chambers when the plurality of solenoid valves are powered on for the first time. The cold oil in the plurality of main valve pilot chambers enters the first channel when the plurality of main valves open.

[0006] The high-temperature solenoid valve group provided by the embodiments of the present application addresses the problem of continuous fuel leakage and adopts a high-temperature solenoid valve group composed of multiple solenoid valves, multiple main valves, a high-temperature fuel passage, a cold oil passage, and a first passage. Through the double-sealing design of the upper valve core and the upper valve seat, and the lower valve core and the lower valve seat, fuel leakage is effectively prevented, and the fuel flow rate required to maintain the pressure difference is reduced. Thus, the fuel consumption of the high-temperature solenoid valve group can be reduced.

[0007] In some embodiments, the upper valve seats of the multiple solenoid valves are respectively and sealingly connected to the upper valve cores of the multiple solenoid valves, and the lower valve seats of the multiple solenoid valves are respectively and sealingly connected to the lower valve cores of the multiple solenoid valves.

[0008] In some embodiments, the upper valve core and the lower valve core of the solenoid valve are made of rubber, and the upper valve seat and the lower valve seat of the solenoid valve are made of metal.

[0009] In some embodiments, the solenoid valve is a two-position three-way solenoid valve.

[0010] In some embodiments, the sum of the capacities of the first passage and the multiple upper passages of the solenoid valves is 200 ml.

[0011] In some embodiments, a first filter is provided between the lower passage of the solenoid valve and the cold oil passage, and a second filter is provided between the pilot chamber of the main valve and the solenoid valve.

[0012] In some embodiments, O-rings are provided at the connections between the multiple solenoid valves and the first passage, and at the connections between the multiple solenoid valves and the multiple main valves. Description of the Drawings

[0013] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a proportional limitation.

[0014] Figure 1 is the working principle diagram of a prior art pilot-operated solenoid valve when it is energized;

[0015] Figure 2 is the working principle diagram of a prior art pilot-operated solenoid valve when it is de-energized;

[0016] Figure 3 is the structural schematic diagram of the high-temperature solenoid valve group provided by some embodiments of the present application;

[0017] Figure 4 is the fluid path schematic diagram of the high-temperature solenoid valve group provided by some embodiments of the present application;

[0018] Figure 5It is the working principle diagram of a two-position three-way solenoid valve when powered off provided by some embodiments of the present application;

[0019] Figure 6 It is the working principle diagram of a two-position three-way solenoid valve when powered on provided by some embodiments of the present application.

[0020] Description of the drawings: 10. Solenoid valve; 11. Upper valve seat of the solenoid valve; 12. Lower valve seat of the solenoid valve; 13. Upper valve core of the solenoid valve; 14. Lower valve core of the solenoid valve; 15. Upper channel of the solenoid valve; 16. Lower channel of the solenoid valve; 20. Main valve; 21. Pilot chamber of the main valve; 22. Main valve piston; 30. High-temperature fuel channel; 31. High-temperature fuel inlet; 32. High-temperature fuel outlet; 40. Cold oil channel; 41. Cold oil inlet; 42. Cold oil outlet; 50. First channel; 51. First outlet; 61. First filter; 62. Second filter. Detailed implementation manners

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on the various embodiments of the present application in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in the various embodiments of the present application, many technical details are presented for the purpose of enabling readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation manners of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of no contradiction.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0023] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0024] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0025] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0026] High-temperature solenoid valve groups usually use pilot-operated solenoid valves to achieve the switching function. The pilot-operated solenoid valve adjusts the movement of the main valve by opening and closing the pilot oil passage, thereby achieving the opening and closing of the valve. Due to the incompressible characteristic of the liquid, in order to maintain the pressure difference in the system, it is usually necessary for the fuel to flow continuously to maintain the normal operation of the valve. During the entire flight, the expected fuel consumption is about 3 kg.

[0027] As Figure 1 shown, when the pilot-operated solenoid valve 60 is energized, the solenoid valve 60 is in the open state, and the valve core of the solenoid valve 60 moves upward under the action of the electromagnetic suction force. At this time, a part of the cold oil flows from the small hole of the valve seat into the cavity of the main valve 20 along the solid arrow A direction in Figure 1 . At the same time, in order to maintain the pressure difference required for the opening and closing of the main valve 20, another part of the cold oil is discharged from the cold oil outlet 42 along the solid arrow B direction in Figure 1 . Figure 1 The dotted arrow in

[0028] As Figure 2 shown, when the pilot-operated solenoid valve 60 is de-energized, the solenoid valve 60 is in the closed state. At this time, the hard-to-hard sealing port of the ball head of the solenoid valve 60 blocks the cold oil from entering the cavity of the main valve 20 and the oil drain port 42. At the same time, the main valve 20 opens, allowing the high-temperature fuel to flow into the valve body from the high-temperature fuel inlet 31 and discharge from the high-temperature fuel outlet 32.

[0029] In addition, the valve core and valve seat of the solenoid valve adopt a hard-to-hard line sealing method, and this method requires a large sealing stress to maintain its sealing ability. Therefore, the spring force will increase accordingly, which in turn leads to an increase in electromagnetic suction force, an increase in the overall size of the solenoid valve, and a slowdown in the response speed.

[0030] For this reason, some embodiments of the present application provide a high-temperature solenoid valve group, which adopts a double-sealing design of an upper valve core and an upper valve seat, and a lower valve core and a lower valve seat, effectively preventing fuel leakage and reducing the fuel flow required to maintain the pressure difference. Thereby, the fuel consumption of the high-temperature solenoid valve group can be reduced.

[0031] The following Figures 3 to 6 will illustrate the high-temperature solenoid valve group provided by some embodiments of the present application.

[0032] As Figure 3 shown, the high-temperature solenoid valve group provided by some embodiments of the present application includes three solenoid valves 10, three main valves 20, a high-temperature fuel passage 30, a cold oil passage 40, and a first passage 50. The main valves 20 are respectively connected to the solenoid valves 10 one by one. Each solenoid valve 10 includes a solenoid valve upper valve seat 11, a solenoid valve lower valve seat 12, a solenoid valve upper valve core 13, and a solenoid valve lower valve core 14. Each solenoid valve 10 is connected with a solenoid valve upper passage 15 and a solenoid valve lower passage 16. Each main valve 20 includes a main valve pilot chamber 21 and a main valve piston 22; the high-temperature fuel passage 30 includes a high-temperature fuel inlet 31 and three high-temperature fuel outlets 32. High-temperature fuel enters the inner cavity of the main valve 20 through the high-temperature fuel inlet 31. When all the solenoid valves 10 are de-energized, the three main valve pistons 22 move upward under the pressure of the high-temperature fuel, and the three main valves 20 open, and the high-temperature fuel flows out through the three high-temperature fuel outlets 32; the cold oil passage 40 includes a cold oil inlet 41 and a cold oil outlet 42. Cold oil is used to control the opening and closing of the main valve 20. When all the solenoid valves 10 are energized, the three solenoid valves 10 move upward, and the cold oil enters the main valve pilot chamber 21 through the solenoid valve lower passage 16, and the main valve piston 22 moves downward, and the main valve 20 closes; the first passage 50 is connected to the solenoid valve upper passage 15. One end of the first passage 50 is provided with a first outlet 51. The first outlet 51 is used to release the air in the main valve pilot chamber 21 when the solenoid valve 10 is energized for the first time. The cold oil in the main valve pilot chamber 21 enters the first passage 50 when the main valve 20 opens. The high-temperature solenoid valve group provided by the embodiments of the present application can reduce the fuel consumption of the high-temperature solenoid valve group.

[0033] The high-temperature solenoid valve group is in the normally open state when de-energized and closes when energized, which can ensure that the valve automatically opens when the system loses power, avoiding the backlog of high-temperature fuel and saving energy.

[0034] As Figure 4As shown, high-temperature fuel enters the inner cavity of the main valve 20 through the high-temperature fuel inlet 31. When all the solenoid valves 10 are de-energized, the main valve piston 22 moves upward under the pressure of the high-temperature fuel, and the main valve 20 opens, and the high-temperature fuel flows out through the three high-temperature fuel outlets 32. When all the multiple solenoid valves 10 are energized, under the action of electromagnetic suction, when the solenoid valve 10 moves upward, the valve core of the solenoid valve 10 moves upward, the lower channel 16 of the solenoid valve opens, and the upper channel 15 of the solenoid valve closes. The cold oil enters the pilot chamber 21 of the main valve through the lower channel 16 of the solenoid valve, and the main valve piston 22 moves downward under the action of the cold oil pressure and the spring force, and the main valve 20 closes.

[0035] The first channel 50 is connected to the upper channels 15 of the multiple solenoid valves and is responsible for fluid transportation between the multiple solenoid valves 10. The first outlet 51 is provided on the first channel 50. When the multiple solenoid valves 10 are energized for the first time, the movement of the valve core will cause cold oil to enter the pilot chamber 21 of the main valve. However, before the cold oil enters, the air originally in the pilot chamber 21 of the main valve needs to be discharged to prevent the air compression from interfering with the opening and closing operations of the main valve 20. The first outlet 51 is used to release the air in the pilot chamber 21 of the main valve when the multiple solenoid valves 10 are energized for the first time, ensuring the pressure balance of the system during startup and avoiding affecting the normal operation of the cold oil and the reliable opening and closing of the main valve 20 due to air residue.

[0036] In some embodiments, the upper valve seats 11 of the multiple solenoid valves are respectively and sealingly connected to the upper valve cores 13 of the multiple solenoid valves, and the lower valve seats 12 of the multiple solenoid valves are respectively and sealingly connected to the lower valve cores 14 of the multiple solenoid valves.

[0037] In some embodiments, the upper valve core 13 and the lower valve core 14 of the solenoid valve are made of rubber, and the upper valve seat 11 and the lower valve seat 12 of the solenoid valve are made of metal.

[0038] By adopting the two-seal form up and down, the solenoid valve 10 effectively solves the problem of fuel consumption when the solenoid valve 10 is opened. This design does not rely on flowing fuel to maintain the pressure difference, thus achieving a more efficient and energy-saving working mode. Specifically, two sealing surfaces are formed between the two valve cores and the two valve seats of the solenoid valve 10, which are respectively located at the upper and lower ends of the valve core. When the solenoid valve 10 is in the closed state, these two sealing surfaces can be closely attached to ensure no fuel leakage. When the solenoid valve 10 needs to be opened, due to the soft-to-hard plane sealing method, the two valve cores can easily disengage from the two valve seats under a small driving force, realizing rapid opening without consuming a large amount of fuel to maintain the pressure difference.

[0039] Due to the good fit between the soft material valve core such as rubber and the hard material valve seat such as metal, effective sealing can be achieved without providing a large sealing stress, forming a soft-to-hard sealing structure. This sealing structure can effectively prevent fluid leakage during the valve opening and closing process, thus ensuring the normal operation of the solenoid valve 10. This can not only reduce the electromagnetic attraction force, enabling the solenoid valve 10 to achieve the opening and closing actions with a smaller driving force, but also reduce the overall size of the solenoid valve 10. In addition, due to the reduction of the sealing stress and the electromagnetic attraction force, the response time of the solenoid valve 10 is also shortened. This means that the solenoid valve 10 can respond to the control signal faster, achieve the opening and closing actions, and improve the dynamic performance and response speed of the system.

[0040] In some embodiments, the solenoid valve 10 is a two-position three-way solenoid valve.

[0041] The two-position three-way solenoid valve has two working positions and three channels, and generally includes an air inlet, an air outlet and an exhaust port. By controlling the movement of the valve core, the connection and disconnection between different channels can be achieved, thereby controlling the flow direction and pressure of the fluid. The two-position three-way solenoid valve has a wide range of applications in the fields of industrial automation, pneumatic control, etc.

[0042] Figure 5 is the working principle diagram of the two-position three-way solenoid valve when it is powered off, Figure 6 is the working principle diagram of the two-position three-way solenoid valve when it is powered on.

[0043] As Figure 5 shown, when the two-position three-way solenoid valve is powered off, the cold oil inlet 41 of the solenoid valve 10 is closed, preventing cold oil from entering the main valve pilot chamber 21 through the cold oil inlet 41. At the same time, the cold oil outlet 42 is opened, allowing the cold oil to be discharged from the device, further ensuring that the cold oil does not enter the main valve pilot chamber 21. At this time, since the cold oil channel is blocked, the main valve 20 is mainly affected by the high-temperature fuel. The high-temperature fuel enters the valve body from the high-temperature fuel inlet 31 and, when the main valve 20 is in the open state, is discharged from the high-temperature fuel outlet 32, and completes the circulation of the high-temperature fuel channel along the Figure 5 solid arrow direction in.

[0044] As Figure 6 shown, when the two-position three-way solenoid valve is powered on, under the action of the electromagnetic attraction force, the upper and lower valve cores of the solenoid valve move upward, resulting in the opening of the cold oil inlet 41 and the closing of the cold oil outlet 42. Cold oil can enter the main valve pilot chamber 21 through the cold oil inlet 41. The cold oil entering the main valve pilot chamber 21 generates a hydraulic pressure on the main valve piston 22. Combining with the action of the spring force, the main valve piston 22 moves in the direction of the high-temperature fuel inlet, and finally causes the main valve 20 to close. The closing of the main valve 20 effectively blocks the channel for the high-temperature fuel to enter the main valve 20, thereby achieving the closing of the high-temperature fuel channel when the solenoid valve 10 is opened.

[0045] In some embodiments, the sum of the capacities of the first channel 50 and the upper channels 15 of the plurality of solenoid valves is 200 ml.

[0046] Since the capacities of the upper channels 15 of the plurality of solenoid valves are designed to be large enough, even in the cold oil state, the oil will not be discharged, thus ensuring the stability and reliability of the system and avoiding unnecessary oil loss.

[0047] In some embodiments, a first filter 61 is provided between the lower channel 16 of the solenoid valve and the cold oil channel 40, and a second filter 62 is provided between the pilot chamber 21 of the main valve and the solenoid valve 10.

[0048] The presence of these filters greatly enhances the anti-pollution ability of the system. Since the upper and lower valve cores and valve seats adopt a soft-to-hard planar sealing form, this form itself has relatively low requirements for the cleanliness of the fuel. Coupled with the setting of the filters, it further improves the resistance of the system to pollutants. Such a design ensures that the solenoid valve 10 can work stably and reliably under various working conditions, greatly extending its service life.

[0049] In some embodiments, O-rings are provided at the connections between the plurality of solenoid valves 10 and the first channel 50, and at the connections between the plurality of solenoid valves 10 and the plurality of main valves 20.

[0050] To ensure good sealing performance at the connections between the plurality of solenoid valves 10 and the first channel 50, and between the plurality of solenoid valves 10 and the plurality of main valves 20, O-rings can be provided at the connections between the plurality of solenoid valves 10 and the first channel 50, and at the connections between the plurality of solenoid valves 10 and the plurality of main valves 20, effectively preventing external leakage problems. The characteristics of the O-ring being able to fit tightly and having excellent elasticity ensure that even in the face of various vibrations and pressure changes, the sealing performance of the connection can be ensured, thus guaranteeing the stable operation of the entire system.

[0051] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present application, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A high-temperature solenoid valve group, characterized in that, Including: A plurality of solenoid valves and a plurality of main valves respectively connected to the plurality of solenoid valves one by one. Each solenoid valve includes a solenoid valve upper seat, a solenoid valve lower seat, a solenoid valve upper spool, and a solenoid valve lower spool. Each solenoid valve is connected to a solenoid valve upper channel and a solenoid valve lower channel. Each main valve includes a main valve pilot chamber and a main valve piston. A high-temperature fuel channel, including a high-temperature fuel inlet and a plurality of high-temperature fuel outlets. High-temperature fuel enters the inner cavities of the plurality of main valves through the high-temperature fuel inlet. When the plurality of solenoid valves are de-energized, the plurality of main valve pistons move upward under the pressure of the high-temperature fuel, and the plurality of main valves open, and the high-temperature fuel flows out through the plurality of high-temperature fuel outlets. A cold oil channel, including a cold oil inlet and a cold oil outlet. Cold oil is used to control the opening and closing of the plurality of main valves. When the plurality of solenoid valves are energized, the plurality of solenoid valves move upward, the cold oil enters the plurality of main valve pilot chambers through the plurality of solenoid valve lower channels, and the plurality of main valve pistons move downward, and the plurality of main valves close. A first channel is connected to the plurality of solenoid valve upper channels. One end of the first channel is provided with a first outlet, and the first outlet is used to release the air in the plurality of main valve pilot chambers when the plurality of solenoid valves are energized for the first time. The cold oil in the plurality of main valve pilot chambers enters the first channel when the plurality of main valves open.

2. The high-temperature solenoid valve group according to claim 1, characterized in that, The plurality of solenoid valve upper seats are respectively and sealingly connected to the plurality of solenoid valve upper spools, and the plurality of solenoid valve lower seats are respectively and sealingly connected to the plurality of solenoid valve lower spools.

3. The high-temperature solenoid valve group according to claim 2, characterized in that The solenoid valve upper spool and the solenoid valve lower spool are made of rubber material, and the solenoid valve upper seat and the solenoid valve lower seat are made of metal material.

4. The high-temperature solenoid valve group according to claim 3, characterized in that, The solenoid valve is a two-position three-way solenoid valve.

5. The high-temperature solenoid valve group according to claim 4, characterized in that, The sum of the capacities of the first channel and the plurality of solenoid valve upper channels is 200 ml.

6. The high-temperature solenoid valve group according to claim 5, wherein, A first filter is provided between the solenoid valve lower channel and the cold oil channel, and a second filter is provided between the main valve pilot chamber and the solenoid valve.

7. The high-temperature solenoid valve group according to claim 6, characterized in that, O-rings are provided at the connections of the plurality of solenoid valves to the first channel and at the connections of the plurality of solenoid valves to the plurality of main valves.

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