CN120007802A - A pilot-operated explosion-proof flow control valve - Google Patents
A pilot-operated explosion-proof flow control valve Download PDFInfo
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- CN120007802A CN120007802A CN202510154326.8A CN202510154326A CN120007802A CN 120007802 A CN120007802 A CN 120007802A CN 202510154326 A CN202510154326 A CN 202510154326A CN 120007802 A CN120007802 A CN 120007802A
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- valve
- flow
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- flow control
- main valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
本申请公开了一种先导式防爆流量控制阀，包括：流量控制主阀、手动控制阀和流量导阀；流量控制主阀包括主流道内的外腔以及经过流量导阀后的中间腔，通过流量导阀节流进入主阀中间腔；手动控制阀进/卸油口与流量控制主阀中间腔连接，手动阀芯切换主阀打开/关闭状态；流量导阀包括舵机与流量导阀阀芯依靠一组双弹簧结构，流量控制主阀通过控制器输出开关量实现舵机正反转，驱动流量导阀控制主阀流量调节。本申请属于军用加油技术领域，本申请解决了现有控制阀结构尺寸超出安装空间的问题。本申请采用先导轴流式结构，能在有限的控制舱空间内满足安装要求，解决了加油装备中阀门尺寸受限的问题。
The present application discloses a pilot-operated explosion-proof flow control valve, including: a flow control main valve, a manual control valve and a flow pilot valve; the flow control main valve includes an outer cavity in the main flow channel and an intermediate cavity after the flow pilot valve, and the flow enters the intermediate cavity of the main valve through the throttling of the flow pilot valve; the manual control valve oil inlet/unloading port is connected to the intermediate cavity of the flow control main valve, and the manual valve core switches the main valve to open/close state; the flow pilot valve includes a steering gear and a flow pilot valve core relying on a set of double spring structures, and the flow control main valve realizes the forward and reverse rotation of the steering gear through the controller output switching quantity, and drives the flow pilot valve to control the flow regulation of the main valve. The present application belongs to the field of military refueling technology, and the present application solves the problem that the existing control valve structure size exceeds the installation space. The present application adopts a pilot axial flow structure, which can meet the installation requirements in the limited control cabin space, and solves the problem of limited valve size in refueling equipment.
Description
Technical Field
The application belongs to the technical field of military fueling, and particularly relates to a pilot-operated anti-explosion flow control valve.
Background
As one of the common explosion-proof flow control valves in the market, the global valve is accepted to a certain extent in the characteristics of reliable quality, stable performance and the like. However, the adopted direct-acting type and explosion-proof motor driving mechanism have limitations in some specific application scenarios.
At present, explosion-proof flow control valves in the market are global valves, the action mode is direct-acting, a driving mechanism adopts an explosion-proof motor to drive, and the structural size of the product is far beyond the requirement of an installation space.
Disclosure of Invention
The invention aims to provide a pilot type explosion-proof flow control valve, which solves the problem that the structural size of the existing control valve exceeds the installation space.
The invention adopts the following technical scheme that the pilot type explosion-proof flow control valve comprises:
The steering engine is fixedly connected with one end of a flow guide valve, the flow guide valve is matched with a flow control main valve through a manual control valve, and a guide valve oil discharging port is arranged at the bottom of the manual control valve.
The flow control main valve comprises an outer cavity in a main flow channel and an intermediate cavity combined with a flow guide valve, a valve core is arranged in the intermediate cavity of the flow control main valve, the valve core is opened and closed under the action of the force of the inner cavity, the outer cavity and the spring force, the movement of the valve core of the flow control main valve is regulated by controlling the on-off of an oil inlet channel of the guide valve and an oil discharging port of the guide valve and the change of the pressure of the inner cavity, and the flow control main valve realizes the forward and reverse rotation of a steering engine through the output switching value of a controller and drives the valve core of the flow control main valve to switch and regulate.
Preferably, the steering engine is disposed within the explosion-proof housing.
Preferably, the flow control main valve communicates pressure to the flow pilot valve through the pilot valve pilot port.
Preferably, the flow control main valve lets fluid into the passage through the inlet.
Preferably, the flow pilot valve directs oil through a pilot valve oil inlet passage.
The invention also provides another technical scheme that the use method of the pilot type explosion-proof flow control valve,
The pilot-operated anti-explosion flow control valve is in a normally closed state, and when medium in the tank needs to be discharged, after the manual control valve is opened, the flow control main valve is opened under the force of the medium, and the fluid in the tank is conveyed into the recovery device.
When special conditions are met, the manual control valve is closed, liquid acts on the middle cavity of the flow control main valve through the flow guide valve to realize valve closing, and the flow guide valve enters the middle cavity of the flow control main valve through the flow guide valve by steering engine control signals and has different pressures, so that the regulation of the fluid flow can be realized.
The invention has the beneficial effects that the pilot axial flow type structure is adopted, the installation requirement can be met in a limited control cabin space, and the problem of limited valve size in oiling equipment is solved. The remote adjustable quantitative oiling device has the advantages that multiple functions such as remote adjustable quantitative oiling, manual and automatic closing/opening and the like are realized, and the automation degree and precision of oiling are improved through the cooperative work of the control system, the flow pilot valve, the flow regulating pilot valve and the like. The flow pilot valve controlled by the micro motor can adjust the opening of the valve core according to different requirements, so that the accurate control of flow is realized, and the flow control main valve has good flow follow-up performance and rapid adjustment.
Drawings
FIG. 1 is a schematic diagram of a pilot-operated anti-explosion flow control valve of the present application;
FIG. 2 is a chart of the outlet flow of the fuel dispenser of the present application;
FIG. 3 is a graph of valve core displacement of the flow pilot valve of the present application.
The hydraulic control system comprises a steering engine 1, an explosion-proof housing 2, a pilot valve pressure leading port 3, a flow pilot valve 4, a manual control valve 5, a pilot valve oil discharging port 6, a manual valve mechanism 7, a manual valve cylinder 8, an outlet 9, a pilot valve oil inlet channel 10, a pilot valve control port and a main valve intermediate cavity oil discharging channel 11, a main valve intermediate cavity 12, a flow control main valve 13 and an inlet 14.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in figure 1, the pilot type explosion-proof flow control valve comprises a steering engine 1, an explosion-proof shell 2, a pilot valve pressure guiding port 3, a flow pilot valve 4, a manual control valve 5, a pilot valve oil discharging port 6, a manual valve mechanism 7, a manual valve cylinder 8, an outlet 9, a pilot valve oil inlet channel 10, a pilot valve control port, a pilot valve middle cavity oil discharging channel 11, a main valve middle cavity 12, a flow control main valve 13 and an inlet 14.
The steering engine 1 is fixedly connected with one end of the flow pilot valve 4, the flow pilot valve 4 is matched with the flow control main valve 13 through the manual control valve 5, and the bottom of the manual control valve 5 is provided with a pilot valve oil discharge port 6.
The flow control main valve 13 comprises an outer cavity in the main flow channel and an intermediate cavity connected with the flow guide valve 4, a valve core is arranged in the intermediate cavity of the flow control main valve 13, and the valve core realizes opening and closing actions under the action of the force of the inner cavity and the outer cavity and the spring force. The valve core of the flow control main valve 13 is regulated to move by controlling the on-off of the oil inlet channel 10 and the outlet 9 of the pilot valve and the change of the pressure in the inner cavity, and the flow control main valve 13 realizes the forward and reverse rotation of the steering engine 1 by outputting the switching value through a controller and drives the valve core of the flow control main valve 13 to switch and regulate.
In some embodiments, steering engine 1 in a pilot-operated anti-explosion flow control valve, steering engine 1 is an important control component. It receives the control system signal, adjusts the valve core position of the flow pilot valve 4 through precise angle control, and further affects the flow control of the flow control main valve 13.
The shell 2 is used as a protection structure of the whole valve, and the shell 2 plays roles of explosion suppression and internal element protection. The housing 2 is generally made of a high-strength explosion-proof material, and can bear the explosion pressure possibly generated inside, prevent sparks and high temperature from being transmitted to the surrounding environment, and ensure safe use in flammable and explosive places. In dangerous environments such as petrochemical industry, even if the valve is internally failed to cause explosion, the shell can be effectively isolated, so that larger safety accidents are avoided.
The pilot valve pressure leading port 3 is used for leading in a pressure signal and transmitting the pressure of the flow control main valve 13 to the flow pilot valve 4, so that the flow pilot valve 4 can perform corresponding actions according to pressure changes, and the opening degree and the flow of the flow control main valve 13 are adjusted.
The flow pilot valve 4 is a key component for controlling the flow of the flow control main valve 13, and accurately adjusts the opening of the valve core according to pressure signals introduced by the pilot valve pressure guiding port 3 and other control signals, such as control signals from the steering engine 1. The gap between the valve core and the valve body of the flow pilot valve 4 determines the flow of the inner cavity of the inlet flow control main valve 13, and simultaneously controls the oil discharge amount of the oil discharge port 6 of the pilot valve, the opening of the oil inlet and the opening of the oil discharge port are in inverse proportion, and the opening height of the valve core of the flow control main valve 13 is controlled by changing the movement position of the valve core, so that the flow is accurately regulated.
The manual control valve 5 provides a manual operation function, and when the automatic control system fails or manual intervention is needed, the opening and closing of the flow control main valve 13 and the flow regulation can be directly controlled through the manual control valve 5. The valves may be manually closed or opened, for example, in emergency situations or during equipment maintenance, to ensure safety and ease of maintenance of the system.
And the pilot valve oil discharge port 6 is used for discharging oil in the flow pilot valve 4 and guaranteeing the normal work and pressure balance of the flow pilot valve 4. When the flow pilot valve 4 performs an adjusting action, redundant oil is discharged to a designated oil tank or a recovery device through the pilot valve oil discharge port 6, so that the accumulation of the oil in the flow pilot valve 4 is prevented, and the performance and the precision of the flow pilot valve 4 are affected.
The manual valve mechanism 7 is matched with the manual control valve 5 and is a mechanical transmission part for realizing manual operation. The manual valve mechanism is driven by manual operation modes such as rotation, push-pull and the like, so that the valve core of the manual control valve 5 is driven to move, and the control of the valve is realized. The manual valve mechanism 7 generally has a reliable mechanical structure and good operation feel, and is convenient for an operator to accurately control.
In the pilot type explosion-proof flow control valve, the manual valve cylinder 8 is used as a power source to provide power for the action of the manual control valve 5. When compressed air is introduced, the manual valve cylinder 8 pushes the valve core to move, so that the opening and closing of the valve or the flow regulation are realized. The valve has the advantages of high response speed, large strength and the like, and can meet the requirements of quick and accurate control of the valve under different working conditions.
The pilot valve oil inlet channel 10 is responsible for introducing oil into the flow pilot valve 4 and providing necessary power source and medium for the normal operation of the flow pilot valve 4. After oil enters the flow guide valve 4 through an oil inlet channel of the flow guide valve 4, the functions of pressure regulation, flow control and the like are realized under the action of various control elements and valve cores in the flow guide valve 4, and the working state of the flow control main valve 13 is further influenced.
The pilot valve control port and the main valve middle cavity oil discharging channel 11 have double functions, on one hand, the channel is used as a control port of the flow pilot valve 4 and receives signals from other control elements or systems to control the action of the flow pilot valve 4, on the other hand, the channel also bears the oil discharging function of the middle cavity of the flow control main valve 13, and when the state of the flow control main valve 13 needs to be regulated, the oil in the middle cavity of the flow control main valve 13 is discharged through the channel to realize the opening and closing of the flow control main valve 13 or the flow regulation.
The main valve intermediate chamber 12 is an important chamber inside the flow control main valve 13, and the pressure change plays a key role in the valve core movement and flow control of the flow control main valve 13. The middle cavity of the flow control main valve 13 is communicated with the flow pilot valve 4, the pilot valve oil discharge port 6 and other parts, and the position and the opening of the valve core of the flow control main valve 13 are controlled through the flow and the pressure balance of oil, so that the accurate adjustment of the flow of the channel of the flow control main valve 13 is realized.
The flow control main valve 13 comprises an outer cavity in the main flow channel and an intermediate cavity after the flow pilot valve 4. The external cavity force and the middle cavity and the spring force are balanced mutually, so that the opening position of the valve core is ensured, and the flow of the valve is accurately controlled.
The flow control main valve 13 acts as a core component of the overall valve, directly controlling the flow of fluid in the conduit. The valve core of the flow control main valve 13 is in different opening positions under various forces, such as external cavity force, middle cavity pressure, spring force and the like, so that the flow area of the main valve channel is regulated, and the flow is controlled. Under different working conditions, the flow control main valve 13 can automatically or manually adjust the flow according to the requirements of the system, so as to ensure the stable operation of the system.
Inlet 14 is the passage of fluid into the pilot operated anti-explosion flow control valve, connected to the upstream piping system. The inlet is provided with consideration of parameters such as flow rate, pressure and the like of the fluid so as to ensure that the fluid can smoothly enter the valve and provide stable fluid conditions for subsequent flow control.
The working method of the pilot type explosion-proof flow control valve is as follows:
When the front-end pump is not working, the flow control main valve 13 realizes a normally closed function under the action of spring force. This is because there is no external power drive, the spring force keeps the spool in the closed position, preventing leakage of the medium, ensuring safety of the system in the off state.
When the front-end pump works normally and the manual control valve 5 is not ventilated or closed manually, the flow control main valve 13 is in a normally open position, so that the normally closed state of the flow control main valve 13 is realized. This arrangement allows the flow control main valve 13 to remain closed during normal operation but without flow control, reducing unnecessary media flow and energy loss, while also providing a quick response basis for subsequent flow control.
When the front end pump is started, the middle cavity is connected with the oil discharging port 6 of the pilot valve, and the valve core fully opens the valve under the action of the external cavity force. At this time, the pressure that the front end pump provided makes outer chamber power increase, overcomes the pressure in spring force and intermediate chamber, promotes the case to remove to full open position, realizes the medium of large-traffic and carries, satisfies the normal operating demand of system.
When the oil is filled, the manual control valve 5 is filled with compressed air of 0.4-0.7MPa or is opened manually, the inlet of the middle cavity of the flow control main valve 13 is cut off, and meanwhile, the oil discharge of the middle cavity of the flow control main valve 13 to the oil collecting tank is realized. The valve core is pushed by the oil pressure of the outer cavity to move against the spring force, and the valve is opened, so that the oiling function is realized. By means of the operation of the manual control valve 5, the opening and closing of the flow control main valve 13 can be flexibly controlled, meeting different fueling requirements.
When the oiling action is finished, the air source of the manual control valve 5 is cut off, the manual control valve 5 is in an open position, the oil drain channel of the middle cavity of the flow control main valve 13 is closed, and the oil inlet channel of the pilot valve enters the middle cavity of the flow control main valve 13 after passing through the manual control valve 5, so that the closed state of the flow control main valve 13 is realized. Thus, after the oiling is finished, the flow control main valve 13 can be timely and accurately closed, medium leakage and waste are prevented, and the stability and safety of the system are ensured.
And in the oiling process, the rear end of the valve outlet of the flowmeter is connected with the flowmeter to read the flow after valve adjustment, the flowmeter outputs the switching value to the control system, the control system programs set the quantity, when the oiling amount reaches the range of 10L of the final required oiling amount, the given signal is centrally controlled, the flow adjustment steering engine 1 starts to move, the flow control main valve 13 is ensured to be closed within 5 seconds, the total oiling amount is ensured to reach the target value, and the total oiling amount control precision is 5%. The accurate flow control and regulation function ensures that the oiling process is more accurate and stable, and improves the working efficiency and reliability of the system.
The flow control pilot valve controller is micro-motor control, the micro-motor is realized by outputting two switching values through the PWM controller, and the opening degree adjustment of the flow pilot valve core driven by the micro-motor is ensured by giving preset pulse equivalent. The gap between the valve core and the valve body determines the flow of the inner cavity of the inlet flow control main valve 13, and simultaneously controls the oil discharging amount of the oil discharging opening 6 of the pilot valve, the opening of the oil inlet of the flow pilot valve 4 and the opening of the oil discharging opening are in inverse proportion, and the valve core moving position determines the valve core opening height of the main valve, so that the flow can be kept at a set position. And detecting whether the oiling flow reaches a preset value or not through a rear-end flowmeter, so as to realize the constant-speed oiling of the flow control main valve 13. PWM is connected to the control panel through wired communication, realizes that the control panel shows data in real time, and according to different pulse width adjustable speed of refueling, provides directly perceived, convenient operation interface and accurate flow control means for operating personnel.
The integral structure of the pilot explosion-proof flow control valve is subjected to explosion-proof treatment, so that the requirements of the using places of CT4 in the II region are met. The pilot type explosion-proof flow control valve can safely and reliably operate in an environment with explosive gas mixture, effectively prevents explosion accidents caused by internal faults or improper operation of the valve, and ensures the safety of personnel and equipment.
In the initial state of the flow pilot valve 4, an oil inlet and an oil discharge port are arranged between the flow control main valve 13 and the flow pilot valve 4, and in the initial state of the flow pilot valve 4, the manual control valve 5 is communicated, and the pressure in the inner cavity of the flow control main valve 13 is not communicated through the pressure flow pilot valve 4, so that the pressure in the inner cavity of the flow control main valve 13 can not be relieved when the manual control valve 5 does not act, and the flow control main valve 13 is closed. This arrangement ensures that the flow control main valve 13 is normally closed, preventing leakage of medium.
When the manual control valve 5 is operated, when the manual control valve 5 is ventilated or the manual operation mechanism is rotated, the oil in the inner cavity of the flow control main valve 13 flows into the inner cavity of the valve core of the flow valve when the valve core of the manual control valve 5 moves, and the pressure balance in the inner cavity of the flow control main valve 13 can be changed through the operation of the manual control valve 5, so that the opening and closing control of the flow control main valve 13 is realized, and a foundation is provided for the flow regulation of a system.
And the flow control valve flow regulation function is simulated and calculated by setting different flow control flow guide valves 4 to regulate spring force values. The micro-motor compression double-spring structure pushes the valve core of the flow guide valve 4 to move downwards, and simulation results are shown in fig. 2 and 3.
It can be seen from fig. 2 and 3 that, along with the change of the force value of the adjusting spring of the flow pilot valve 4, the flow of the flow control main valve 13 changes along with the change, the force value adjusting range is (2.5-1.5) mm, the flow follow-up change of the flow control main valve 13 is 100%/-25%, the whole adjusting pulse width is 444 mus, each 25% adjusting pulse width is 148 mus, the flow coverage index is required, the flow follow-up of the flow control main valve 13 is good, and the adjustment is rapid.
The application can ensure the safety and stability of the production process for some industrial oiling systems with flammable and explosive dangerous environments, such as petrochemical industry, fuel gas and other industries, and the explosion-proof performance and the accurate flow control capability of the control valve. The application relates to a pilot type explosion-proof flow control valve which is applied to the field of military special oiling.
While the present application has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the application. Many modifications and substitutions of the present application will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the application should be limited only by the attached claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510154326.8A CN120007802A (en) | 2025-02-12 | 2025-02-12 | A pilot-operated explosion-proof flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510154326.8A CN120007802A (en) | 2025-02-12 | 2025-02-12 | A pilot-operated explosion-proof flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120007802A true CN120007802A (en) | 2025-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510154326.8A Pending CN120007802A (en) | 2025-02-12 | 2025-02-12 | A pilot-operated explosion-proof flow control valve |
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| Country | Link |
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| CN (1) | CN120007802A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202220890U (en) * | 2011-08-26 | 2012-05-16 | 北京航天动力研究所 | Pilot operated safety valve with manual opening mechanism |
| CN110486479A (en) * | 2019-08-28 | 2019-11-22 | 西安航天动力研究所 | A kind of big flow three-level guide electromagnetic valve |
| CN111396422A (en) * | 2020-04-23 | 2020-07-10 | 太原理工大学 | Pilot type proportional flow valve and control method |
-
2025
- 2025-02-12 CN CN202510154326.8A patent/CN120007802A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202220890U (en) * | 2011-08-26 | 2012-05-16 | 北京航天动力研究所 | Pilot operated safety valve with manual opening mechanism |
| CN110486479A (en) * | 2019-08-28 | 2019-11-22 | 西安航天动力研究所 | A kind of big flow three-level guide electromagnetic valve |
| CN111396422A (en) * | 2020-04-23 | 2020-07-10 | 太原理工大学 | Pilot type proportional flow valve and control method |
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