CN112879621A - Gear motor composite servo motor double-mode guide safety Y-shaped water hammer relief valve - Google Patents

Gear motor composite servo motor double-mode guide safety Y-shaped water hammer relief valve Download PDF

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Publication number
CN112879621A
CN112879621A CN202110173308.6A CN202110173308A CN112879621A CN 112879621 A CN112879621 A CN 112879621A CN 202110173308 A CN202110173308 A CN 202110173308A CN 112879621 A CN112879621 A CN 112879621A
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China
Prior art keywords
valve
special
external thread
gear
thread plug
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Granted
Application number
CN202110173308.6A
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Chinese (zh)
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CN112879621B (en
Inventor
田中山
杨昌群
张昊天
王现中
王永飞
牛道东
赵升吨
石保虎
李育特
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Xian Jiaotong University
China Oil and Gas Pipeline Network Corp South China Branch
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Xian Jiaotong University
China Oil and Gas Pipeline Network Corp South China Branch
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Priority to CN202110173308.6A priority Critical patent/CN112879621B/en
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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings

Abstract

The application discloses safe Y type water hammer relief valve is led to compound servo motor bimodulus of gear motor relates to water hammer relief valve technical field. The main valve can be opened rapidly when water hammer occurs, the opening area of the main valve can be adjusted, and when a control circuit or a hydraulic system breaks down, the main valve can be opened manually or can be opened through a motor. The pressure release valve comprises a main valve, an electromagnetic pilot proportional directional valve and a controller; the valve body is hermetically connected with a supporting cylinder, the middle part of the special-shaped external thread plug is in threaded connection with the supporting cylinder, the first end of the special-shaped external thread plug extends into the valve body and is in sealing fit with the valve body, and the second end of the special-shaped external thread plug is sequentially connected with a gear motor, a hand wheel and a motor; the main valve is communicated with the gear motor through an electromagnetic pilot proportional reversing valve; a pressure sensor is arranged at an oil inlet of the main valve, and an angle sensor is arranged on the special-shaped external thread plug; the pressure sensor, the angle sensor and the electromagnetic pilot proportional directional valve are all electrically connected with the controller.

Description

Gear motor composite servo motor double-mode guide safety Y-shaped water hammer relief valve
Technical Field
The application relates to the technical field of water hammer relief valves, in particular to a gear motor composite servo motor double-mode guide safety Y-shaped water hammer relief valve.
Background
In a long-distance petroleum pipeline, water hammer can be caused by conditions such as accidental pump stop or abnormal opening and closing of a valve, and pipe explosion accidents can be caused by local overpressure in the pipeline. In order to ensure safe operation of long oil pipelines and associated equipment, surge relief valves are typically used to relieve surge pressure. When water hammer occurs in the pipeline, the pressure release valve can be quickly opened and releases high-pressure medium, so that the pressure of the pipeline is restored to a normal range, and the aim of protecting the pipeline and equipment in the pipeline is fulfilled. Therefore, the opening speed of the pressure release valve in the water hammer is of great significance to the safe operation of the whole pipeline.
At present, the traditional water hammer relief valve mainly comprises three structural forms of an angle type, an axial flow type and a Y type. The principle of the water hammer relief valve with the structure is that the normal action of the main valve is ensured through the pressure change in the valve cavity of the main valve and the spring of the main valve. It suffers from the following disadvantages:
1. the main valve cavity is communicated with the front pipeline and the rear pipeline through the pilot valve, liquid in the main valve cavity needs to be discharged during action and is limited by the pilot valve structure and the diameter of the pressure guiding pipe, and the liquid discharging speed in the main valve cavity is slow, so that the main valve cannot be opened quickly;
2. oil liquid needs to flow through the main valve cavity, so that the requirement on a liquid medium is high, and a filter needs to be installed, so that the traditional water hammer pressure release valve can only be used for a finished oil long delivery pipeline, and the application scene of the traditional water hammer pressure release valve is limited;
3. due to the existence of the main valve spring, the valve core vibrates during working, the abrasion of the valve core is aggravated, and the service life is short;
4. the main valve only has two states of opening and closing, and the opening area of the main valve cannot be adjusted, so that the valve core of the main valve needs to be frequently opened and closed under certain conditions, and the service life of the main valve is shortened.
Disclosure of Invention
The embodiment of the application provides a safe Y type water hammer relief valve is led to compound servo motor bimodulus of gear motor, monitor the water hammer phenomenon in the pipeline through the controller, not only can open the main valve rapidly when taking place the water hammer phenomenon, and the open area of main valve is adjustable moreover, can carry out accurate control to the oil pressure in the pipeline, in addition, when control circuit or hydraulic system broke down, can manually open the main valve or open the main valve through the motor, guarantee that the relief valve still can normally work.
In order to achieve the above object, an embodiment of the present application provides a dual-mode pilot safety Y-type water hammer relief valve for a gear motor composite servo motor, which includes a main valve of the Y-type water hammer relief valve, an electromagnetic pilot proportional directional valve and a controller; the main valve of the Y-shaped water hammer relief valve comprises a valve body, a special-shaped external thread plug and a supporting cylinder, wherein the supporting cylinder is hermetically connected to the valve body, the middle part of the special-shaped external thread plug is in threaded connection with the supporting cylinder, a first end of the special-shaped external thread plug extends into the valve body and is in sealed fit with the valve body, and a second end of the special-shaped external thread plug is sequentially connected with a gear motor, a hand wheel and a motor; the special-shaped external thread plug and the supporting cylinder are sealed through a second sealing element; the included angle between the inlet of the valve body and the special-shaped external thread plug is larger than 90 degrees; the main valve of the Y-shaped water hammer relief valve is communicated with the gear motor through the electromagnetic pilot proportional reversing valve; a first stop valve is arranged on an oil path between the inlet of the valve body and the oil inlet of the electromagnetic pilot proportional directional valve, and a second stop valve is arranged on an oil path between two oil ports of the gear motor; a pressure sensor is arranged at the inlet of the valve body, and an angle sensor is arranged on one side of the gear motor, which is close to the main valve of the Y-shaped water hammer relief valve; the pressure sensor, the angle sensor and the electromagnetic pilot proportional directional valve are all electrically connected with the controller; the pressure sensor can collect the oil pressure at the inlet of the valve body; the controller can control the electromagnetic pilot proportional directional valve to change direction according to the oil pressure, and adjust the opening area of the main valve of the Y-shaped water hammer pressure release valve by controlling the flow of the electromagnetic pilot proportional directional valve; the angle sensor can acquire the rotating angle of the special-shaped external thread plug; the controller can judge whether the rotating angle of the special-shaped external thread plug meets a preset condition, and if not, the controller judges that the electromagnetic pilot proportional directional valve has a fault and reminds a hand wheel or a motor to be started.
Further, a first sealing element is arranged in the valve body, a first upper sealing end is tightly pressed between the inner wall surface of the valve body and the outer wall surface of the supporting cylinder, a second upper sealing end is tightly pressed between the inner wall surface of the valve body and the sealing surface of the special-shaped external thread plug, a through hole is formed in the side wall of the first sealing element, when the special-shaped external thread plug reaches a lower limit position, the through hole is located above the sealing surface of the special-shaped external thread plug, and when the special-shaped external thread plug reaches an upper limit position, the through hole is located below the sealing surface of the special-shaped external thread plug.
Further, the gear motor is connected with the special-shaped external thread plug spline.
Furthermore, the motor is connected with the special-shaped external thread plug through a coupler, a first internal spline is arranged at one end, close to the motor, of the coupler, and a first external spline matched with the first internal spline is arranged on the special-shaped external thread plug.
Further, the gear motor includes a housing and a first gear and a second gear disposed within the housing; the first gear is meshed with the second gear, the first gear is located on the outer side of the second gear, two oil ports are formed in the shell, the two oil ports are symmetrically arranged relative to the axis of the gear motor, and the two oil ports are located on two sides of a connecting line of the center of the first gear and the center of the second gear respectively.
Furthermore, a second internal spline is arranged on the first gear, a second external spline is arranged on the special-shaped external thread plug, and a second end of the special-shaped external thread plug penetrates through the second internal spline and then is connected with the hand wheel and the motor.
Furthermore, a cavity is arranged in the supporting cylinder, a packing cavity is formed between the inner wall of the cavity and the special-shaped external thread plug, a sealing end cover is arranged on the supporting cylinder, and the sealing end cover can tightly press the second sealing element in the packing cavity.
Furthermore, a mounting hole is formed in the hand wheel, an external thread is arranged at the second end of the special-shaped external thread plug, and the second end of the special-shaped external thread plug penetrates through the mounting hole and then is fastened with the nut.
Compared with the prior art, the application has the following beneficial effects:
1. this application embodiment realizes opening and closing of main valve through the special-shaped external screw thread end cap motion of gear motor direct drive Y type water hammer relief valve main valve, compare among the prior art the discharge velocity of main valve cavity internal liquid and receive the diameter restriction of pilot valve and suction pipe, when this application embodiment closes Y type water hammer relief valve main valve, liquid in Y type water hammer relief valve main valve cavity can directly discharge to the pipeline on, when taking place the water hammer phenomenon in the pipeline, Y type water hammer relief valve main valve can open rapidly, can effectively avoid taking place the burst pipe accident.
2. The special-shaped external thread plug is provided with the hand wheel and the motor, when a control circuit or a hydraulic system breaks down, the switch of the main valve can be controlled through the hand wheel or the motor, and the safety of the pressure release valve is improved.
3. According to the embodiment of the application, high-pressure oil is conveyed to different oil inlets of the gear motor, the gear motor is rotated, the supporting cylinder is driven to rotate simultaneously, the main valve is opened or closed, oil pressure in the pipeline is fully utilized, and manpower is saved.
4. This application embodiment gathers the angle that special-shaped external screw thread end cap rotated through angle sensor to with the angle value feedback to the controller, judge through the controller whether the angle that special-shaped external screw thread end cap rotated accords with the preset condition, can carry out real-time supervision to the main valve, make the main valve pressure release more accurate, and when the angle that has rotated is not conform to the condition, remind manually or open the main valve through the motor, improve the security of relief valve.
5. The opening area of Y type water hammer relief valve main valve of this application embodiment can be adjusted, can carry out accurate control to the oil pressure in the pipeline.
6. The special-shaped external thread plug and the valve body of the Y-shaped water hammer relief valve main valve have certain angles in the embodiment of the application, and the impact force of water hammer on the valve body and the special-shaped external thread plug can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram illustrating a closed state of a main valve of a Y-type surge relief valve according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram illustrating an opening state of a main valve of the Y-type surge relief valve according to the embodiment of the present application;
fig. 3 is a sectional view of the gear motor in the embodiment of the present application.
Detailed Description
The technical solutions in 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 obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1 and 2, the embodiment of the present application provides a dual-mode guiding safety Y-type water hammer relief valve of a gear motor compound servo motor 9, where the Y-type water hammer relief valve includes a main valve of the Y-type water hammer relief valve, an electromagnetic guiding proportional directional valve 14, and a controller 13. The main valve of the Y-shaped water hammer relief valve comprises a valve body 1, a supporting cylinder 3 is mounted on the valve body 1, internal threads are arranged on the supporting cylinder 3, and a first sealing element 2 is mounted between the supporting cylinder 3 and the valve body 1. The inner thread part of the supporting cylinder 3 is engaged with the special-shaped outer thread plug 11, and the included angle between the inlet of the valve body 1 and the special-shaped outer thread plug 11 is larger than 90 degrees. Be equipped with the cavity in the support tube 3, form the packing chamber between the inner wall of cavity and the dysmorphism external screw thread end cap 11, be equipped with second sealing member 4 in the packing chamber, be equipped with end cover 5 on the support tube 3, end cover 5 can compress tightly second sealing member 4 at the packing intracavity. The first end of the first upper seal 2 is tightly pressed between the inner wall surface of the valve body 1 and the outer wall surface of the supporting cylinder 3, the second end of the first upper seal 2 is tightly pressed between the inner wall surface of the valve body 1 and the sealing surface of the special-shaped external thread plug 11, a through hole 21 is formed in the side wall of the first sealing element 2, when the special-shaped external thread plug reaches the lower limit position, the through hole 21 is located above the sealing surface of the special-shaped external thread plug 11, and when the special-shaped external thread plug 11 reaches the upper limit position, the through hole 21 is located below the sealing surface of the special-shaped.
A hand wheel 8 and a motor 9 are installed at the upper end of the special-shaped external thread plug 11, specifically, an installation hole is formed in the hand wheel 8, an external thread is arranged at the second end of the special-shaped external thread plug 11, and the second end of the special-shaped external thread plug 11 penetrates through the installation hole and then is screwed with the nut 9; the end part of the second end of the special-shaped external thread plug 11 is connected with the motor 9 through a coupler 16, a first internal spline is arranged on a shaft hole on one side, close to the motor 9, of the coupler 16, and a first external spline is arranged on the special-shaped external thread plug 11. The part of the special-shaped external thread plug 11, which is positioned between the hand wheel 8 and the sealing end cover 5, is provided with a gear motor 7.
The main valve of the Y-shaped water hammer relief valve is communicated with the gear motor 7 through an electromagnetic pilot proportional directional valve 14. A pressure sensor 10 is installed at the inlet of the valve body 1, and an angle sensor 6 is installed on one side, close to the main valve of the Y-shaped water hammer relief valve, of the gear motor 7. The pressure sensor 10, the angle sensor 6 and the electromagnetic pilot proportional directional valve 14 are all electrically connected with the controller 13.
The pressure sensor 10 can collect oil pressure at an inlet of the valve body, the controller 13 can control the electromagnetic pilot proportional directional valve 14 to change direction according to the oil pressure, and the opening area of the main valve of the Y-shaped water hammer relief valve is adjusted by controlling the flow of the electromagnetic pilot proportional directional valve 14.
The angle sensor 6 can acquire the rotating angle of the special-shaped external thread plug 11, the controller 13 can also judge whether the rotating angle of the special-shaped external thread plug 11 meets a preset condition, and if not, the controller judges that the electromagnetic pilot proportional directional valve 14 has a fault and reminds the hand wheel 8 or the motor 9 to be started.
A first stop valve 12 is arranged on an oil path between the inlet of the valve body 1 and the electromagnetic pilot proportional directional valve 14, and a second stop valve 15 is arranged on an oil path between two oil ports of the gear motor 7.
Referring to fig. 3, the gear motor 7 includes a housing 75 and first and second gears 71 and 72 provided in the housing 75. The first gear 71 is engaged with the second gear 72, the first gear 71 is located outside the second gear 72, two oil ports are arranged on the housing 75, the two oil ports are symmetrically arranged relative to the axis of the gear motor 7, and the two oil ports are respectively located on two sides of a connecting line of the center of the first gear 71 and the center of the second gear 72. For convenience of description, the left oil port is referred to as a first oil port 73, and the right oil port is referred to as a second oil port 74.
A second internal spline is arranged on the rotor 76, a second external spline is arranged on the special-shaped external thread plug 11, and the second end of the special-shaped external thread plug 11 penetrates through the second internal spline and then is connected with the hand wheel 8 and the motor 9.
With continued reference to fig. 1 and fig. 2, the working principle of the dual-mode guiding safety Y-shaped water hammer relief valve of the gear motor composite servo motor 9 according to the embodiment of the present application is as follows:
referring to fig. 1, when the oil pressure in the oil line is normal and water hammer does not occur, the first stop valve 12 is in an open state, the second stop valve 15 is in a closed state, the main valve is closed, and the oil cannot flow out through the relief valve. At this time, since the oil pressure at the inlet of the valve body 1 is low, the controller 13 controls the electromagnetic pilot proportional directional valve 14 to be in the left position.
Referring to fig. 1 to 3, when a water hammer occurs, the oil pressure at the inlet of the valve body 1 rises, the pressure value collected and transmitted by the pressure sensor 10 to the controller 13 exceeds a set pressure value, it should be noted that the set pressure value can be changed according to the actual application, the controller 13 controls the electromagnetic pilot proportional directional valve 14 to be in the right position, the high-pressure oil at the inlet can flow through the electromagnetic pilot proportional directional valve 14 through the first stop valve 12, flows in from the second oil port 74 on the right side of the gear motor 7, pushes the first gear 71 to rotate counterclockwise, the second gear 72 rotates clockwise, the oil flows out from the first oil port 73 on the left side, the flowing oil flows to the outlet of the main valve through the electromagnetic pilot proportional valve 14, because the special-shaped external thread plug 11 is connected with the first gear 71 through a spline, the first gear 71 drives the special-shaped external thread plug 11 to rotate counterclockwise, meanwhile, the special-shaped external thread plug 11 can move along the axis relative to the first gear 71, so that the special-shaped external thread plug 11 rises, the main valve is opened, oil flows out from the through hole 21, and the oil pressure at the inlet of the valve body 1 is reduced.
With continued reference to fig. 1 to 3, after pressure relief is completed, that is, when the pressure value acquired by the pressure sensor 10 is lower than the preset value, the controller 13 controls the electromagnetic pilot proportional directional valve 14 to be in the left position, oil at the inlet of the valve body 1 may flow through the electromagnetic pilot proportional directional valve 14 through the first stop valve 12, flow in from the first oil port 73 on the left side of the gear motor 7, push the first gear 71 to rotate clockwise, the second gear 72 to rotate counterclockwise, then flow out from the second oil port 74 on the right side, flow out from the second oil port 74 to the outlet of the main valve through the electromagnetic proportional pilot valve 14, and the first gear 71 drives the special-shaped external thread plug 11 to rotate clockwise and descend until the main valve is closed.
During the pressure relief process, the controller 13 can control the flow rate in the electromagnetic proportional valve 14 according to the magnitude of the pressure value collected by the pressure sensor 10, so as to control the opening area of the main valve. Specifically, in the pressure relief process, the controller 13 may control the flow rate in the electromagnetic proportional valve 14 to decrease, so that the gear motor 7 stops rotating, and the special-shaped external thread plug 11 is fixed at a certain position.
Be equipped with angle sensor 6 under gear motor 7, angle sensor 6 can gather the angle that special-shaped external screw thread end cap 11 rotated to convey the angle that special-shaped external screw thread end cap 11 rotated to controller 13, controller 13 compares the angle that special-shaped external screw thread end cap 11 rotated with the preset condition, and is concrete, and the preset condition can be that the angle that special-shaped external screw thread end cap 11 rotated equals to preset the angle, does not do the restriction here. When the rotating angle of the special-shaped external thread plug 11 meets the preset condition, the control circuit is judged to work normally and can be used continuously; when the rotating angle of the special-shaped external thread plug 11 does not accord with the preset condition, the fault of the control circuit is judged and the hand wheel 8 or the motor 9 is prompted to be started, so that the controller 13, the angle sensor 6 and the pressure sensor 10 form closed-loop control, a feedback control mechanism is applied, the control is more accurate, and the robustness is improved.
When a problem occurs in a certain link of the control circuit or power is cut off, the first stop valve 12 is closed, the second stop valve 15 is opened, the motor 9 can be started or the hand wheel 8 can be manually rotated to enable the special-shaped external thread plug 11 to ascend so as to open the main valve body and complete pressure relief, therefore, a main pipeline accident caused by control circuit faults or power failure can be effectively avoided, and after pressure relief is completed, the special-shaped external thread plug 11 can be downwards moved through the hand wheel 8 or the motor 9 to close the main valve body.
The above is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. A gear motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve is characterized by comprising a main valve of the Y-shaped water hammer relief valve, an electromagnetic guide proportional directional valve and a controller;
the main valve of the Y-shaped water hammer relief valve comprises a valve body, a special-shaped external thread plug and a supporting cylinder, wherein the supporting cylinder is hermetically connected to the valve body, the middle part of the special-shaped external thread plug is in threaded connection with the supporting cylinder, a first end of the special-shaped external thread plug extends into the valve body and is in sealed fit with the valve body, and a second end of the special-shaped external thread plug is sequentially connected with a gear motor, a hand wheel and a motor; the special-shaped external thread plug and the supporting cylinder are sealed through a second sealing element; the included angle between the inlet of the valve body and the special-shaped external thread plug is larger than 90 degrees;
the main valve of the Y-shaped water hammer relief valve is communicated with the gear motor through the electromagnetic pilot proportional reversing valve; a first stop valve is arranged on an oil path between the inlet of the valve body and the oil inlet of the electromagnetic pilot proportional directional valve, and a second stop valve is arranged on an oil path between two oil ports of the gear motor;
a pressure sensor is arranged at the inlet of the valve body, and an angle sensor is arranged on one side of the gear motor, which is close to the main valve of the Y-shaped water hammer relief valve; the pressure sensor, the angle sensor and the electromagnetic pilot proportional directional valve are all electrically connected with the controller;
the pressure sensor can collect the oil pressure at the inlet of the valve body; the controller can control the electromagnetic pilot proportional directional valve to change direction according to the oil pressure, and adjust the opening area of the main valve of the Y-shaped water hammer pressure release valve by controlling the flow of the electromagnetic pilot proportional directional valve;
the angle sensor can acquire the rotating angle of the special-shaped external thread plug; the controller can judge whether the rotating angle of the special-shaped external thread plug meets a preset condition, and if not, the controller judges that the electromagnetic pilot proportional directional valve has a fault and reminds a hand wheel or a motor to be started.
2. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 1, wherein a first sealing element is arranged in the valve body, a first end of the first upper seal is tightly pressed between an inner wall surface of the valve body and an outer wall surface of the supporting cylinder, a second end of the first upper seal is tightly pressed between the inner wall surface of the valve body and a sealing surface of the special-shaped external thread plug, a through hole is formed in a side wall of the first sealing element, when the special-shaped external thread plug reaches a lower limit position, the through hole is located above the sealing surface of the special-shaped external thread plug, and when the special-shaped external thread plug reaches an upper limit position, the through hole is located below the sealing surface of the special-shaped external thread plug.
3. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 1, wherein the gear motor is in splined connection with the special-shaped external thread plug.
4. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 1, wherein the motor is connected with the special-shaped external thread plug through a coupler, a first internal spline is arranged at one end, close to the motor, of the coupler, and a first external spline matched with the first internal spline is arranged on the special-shaped external thread plug.
5. The gear-motor compound servo motor dual-mode safety Y-shaped water hammer relief valve according to claim 1, wherein the gear motor comprises a housing and a first gear and a second gear which are arranged in the housing; the first gear is meshed with the second gear, the first gear is located on the outer side of the second gear, two oil ports are formed in the shell, the two oil ports are symmetrically arranged relative to the axis of the gear motor, and the two oil ports are located on two sides of a connecting line of the center of the first gear and the center of the second gear respectively.
6. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 5, wherein a second internal spline is arranged on the first gear, a second external spline is arranged on the special-shaped external thread plug, and a second end of the special-shaped external thread plug penetrates through the second internal spline and then is connected with the hand wheel and the motor.
7. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 1, wherein a cavity is arranged in the supporting cylinder, a packing cavity is formed between the inner wall of the cavity and the special-shaped external thread plug, a sealing end cover is arranged on the supporting cylinder, and the sealing end cover can tightly press the second sealing element in the packing cavity.
8. The gear-motor composite servo motor dual-mode guide safety Y-shaped water hammer relief valve according to claim 1, wherein a mounting hole is formed in the hand wheel, an external thread is arranged at the second end of the special-shaped external thread plug, and the second end of the special-shaped external thread plug penetrates through the mounting hole and then is fastened with a nut.
CN202110173308.6A 2021-02-09 2021-02-09 Gear motor composite servo motor double-mode guide safety Y-shaped water hammer relief valve Active CN112879621B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449982A (en) * 1966-10-26 1969-06-17 English Electric Co Ltd Rotary actuators
CN1064939A (en) * 1991-03-14 1992-09-30 德雷塞工业有限公司 Be used to detect the method and apparatus of the reduction valve set pressure of operation valve control
CN101846086A (en) * 2010-06-03 2010-09-29 浙江大学 Fluid test experimental device for centrifugal pump
WO2017202151A1 (en) * 2016-05-26 2017-11-30 刘晓琦 Forced seal ball valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449982A (en) * 1966-10-26 1969-06-17 English Electric Co Ltd Rotary actuators
CN1064939A (en) * 1991-03-14 1992-09-30 德雷塞工业有限公司 Be used to detect the method and apparatus of the reduction valve set pressure of operation valve control
CN101846086A (en) * 2010-06-03 2010-09-29 浙江大学 Fluid test experimental device for centrifugal pump
WO2017202151A1 (en) * 2016-05-26 2017-11-30 刘晓琦 Forced seal ball valve

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