CN112879624B - Gear motor and servo motor double-control axial flow safety type water hammer relief valve - Google Patents
Gear motor and servo motor double-control axial flow safety type water hammer relief valve Download PDFInfo
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- CN112879624B CN112879624B CN202110173366.9A CN202110173366A CN112879624B CN 112879624 B CN112879624 B CN 112879624B CN 202110173366 A CN202110173366 A CN 202110173366A CN 112879624 B CN112879624 B CN 112879624B
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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
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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
- F16K17/164—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
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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
- F16K17/168—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
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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
- F16K31/12—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
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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
- 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
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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
- 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
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention belongs to the technical field of water hammer relief valves, and particularly relates to a gear motor and servo motor double-control axial-flow safety water hammer relief valve which comprises a valve body, a supporting cylinder, a gear motor, a valve rod, an electromagnetic pilot proportional directional valve, a hand wheel, a pressure sensor, an angle sensor, a servo motor and a controller, wherein the supporting cylinder is fixed on the valve body, a sealing end cover is arranged on the supporting cylinder, and the valve body comprises an inlet and an outlet; the valve rod penetrates through the support cylinder, the sealing end cover and the gear motor, one end of the valve rod is provided with a plug, and the other end of the valve rod is connected with the hand wheel; the plug extends into the valve body, and the axis of the inlet of the valve body is vertical to the axis of the valve rod; the valve rod is provided with an external thread section near the plug, and the external thread section is meshed with the internal thread arranged on the supporting cylinder. The invention can realize the cooperative control of the pressure release valve through the servo motor and the gear motor.
Description
Technical Field
The invention belongs to the technical field of water hammer relief valves, and particularly relates to a gear motor and servo motor double-control axial flow safety 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 purpose of protecting the pipeline and equipment in the pipeline is achieved. 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 normal action of the main valve is ensured by the pressure change in the valve cavity of the main valve and the spring of the main valve in principle.
It has 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. because of the existence of the main valve spring, the valve core vibrates during working, the abrasion of the valve core is intensified, and the service life is short.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a gear motor and servo motor double-control axial flow safety type water hammer pressure relief valve, which can realize the cooperative control of the pressure relief valve through a servo motor and a gear motor.
The technical scheme for realizing the functions is as follows: a double-control axial-flow safety water hammer relief valve of a gear motor and a servo motor is characterized in that:
comprises a valve body, a supporting cylinder, a gear motor, a valve rod, an electromagnetic pilot proportional directional valve, a hand wheel, a pressure sensor, an angle sensor, a servo motor and a controller,
the supporting cylinder is fixed on the valve body, a sealing end cover is arranged on the supporting cylinder, and the valve body comprises an inlet and an outlet;
the valve rod penetrates through the support cylinder, the sealing end cover and the gear motor, a plug is arranged at one end of the valve rod, the other end of the valve rod is connected with the servo motor through a coupler, and the hand wheel is fixed on the valve rod; the plug extends into the valve body, and the inlet axis of the valve body is vertical to the axis of the valve rod;
an external thread section is arranged on the valve rod close to the plug and is meshed with an internal thread arranged on the supporting cylinder;
the gear motor comprises a shell, a first gear and a second gear, the shell is provided with an oil suction port and an oil outlet, and the first gear drives the valve rod to rotate;
an inlet of the valve body is connected to an oil inlet of the electromagnetic pilot proportional reversing valve through a first stop valve, and an oil outlet of the electromagnetic pilot proportional reversing valve is connected to an outlet of the valve body; an oil suction port and an oil outlet of the gear motor are respectively connected to two working ports of the electromagnetic pilot proportional reversing valve through pipelines, and a second stop valve is arranged between the two pipelines; pressure sensor is used for acquireing the pressure value of valve body entrance and conveys the controller with this pressure value, the controller realizes the switching-over according to this pressure value control electromagnetic type guide proportion switching-over valve, angle sensor is used for measuring valve rod turned angle to convey the controller with this turned angle, the controller judges according to turned angle whether can satisfy the pressure release requirement that the pressure value corresponds this moment, if unsatisfied, the controller can control electromagnetic type guide proportion switching-over valve increase working opening and pass through the flow, increase valve rod lifting height, if angle sensor detects the valve rod and does not rotate this moment, then controller control servo motor rotates, thereby realize valve rod lifting height, realize the pressure release.
Further, the valve rod and the first gear are connected through a spline.
Further, an internal spline is arranged on the first gear, and an external spline is arranged on the valve rod.
Furthermore, one end of the coupler is connected with an output shaft of the servo motor, an internal spline is arranged inside the other end of the coupler, and an external spline matched with the internal spline of the coupler is arranged on the end portion of the valve rod.
Furthermore, a sealing ring is arranged between the supporting cylinder and the valve body.
Furthermore, the supporting cylinder is provided with a cavity, a packing cavity is formed between the inner wall of the cavity and the valve rod, and the sealing end cover compresses the packing in the packing cavity.
Further, the hand wheel is fixed on the valve rod through a nut.
Furthermore, a gasket for preventing looseness is arranged between the hand wheel and the nut.
Furthermore, the hand wheel is provided with a mounting hole, the valve rod penetrates through the mounting hole, and the mounting hole limits the hand wheel.
The invention has the advantages that:
1. the electromagnetic pilot proportional reversing valve is used for reversing the oil way, so that the operation is simple and the reaction is rapid;
2. high-pressure oil is conveyed to different oil inlets of the gear motor, so that the gear motor rotates and drives the supporting cylinder to rotate at the same time, the main valve is opened or closed, manpower is saved, and the oil pressure in the pipeline is fully utilized;
3. the angle sensor is used for detecting the actual rotating angle of the supporting cylinder and feeding information back to the controller, so that the pressure relief of the main valve is more accurate;
4. the controller is used as a control unit of the system, can detect the water hammer phenomenon in the pipeline, can receive angle information transmitted by the angle sensor, and corrects the opening area of the valve, so that manpower is saved, and the control is more accurate;
5. the invention also adds a control mode of driving the servo motor and the hand wheel, and aims to prevent the phenomenon that the main valve cannot normally release pressure due to faults when the gear motor direct driving mode works.
Drawings
FIG. 1 is a schematic structural view of a double-control axial-flow safety type water hammer relief valve with a gear motor and a servo motor according to the present invention;
FIG. 2 is a schematic view of a gear motor;
fig. 3 is a schematic top view of the gear motor and servo motor double-control axial-flow safety hydraulic motor with hydraulic surge relief valve gear of the present invention.
In the figure: 1. the oil-gas separating valve comprises a valve body, 2, a plug, 3, a valve rod, 4, a sealing ring, 5, a supporting cylinder, 6, a filler, 7, an angle sensor, 8, a sealing end cover, 9, a gear motor, 10, a hand wheel, 11, a gasket, 12, a nut, 13, a second stop valve, 14, an electromagnetic pilot proportional reversing valve, 15, a controller, 16, a first stop valve, 17, a pressure sensor, 18, a servo motor, 91, a first gear, 92, a countershaft, 93, an oil outlet, 94, a second gear, 96 and an oil suction port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
A gear motor and servo motor double-control axial flow safety type water hammer relief valve comprises a valve body 1, a supporting cylinder 5, a gear motor 9, a valve rod 3, an electromagnetic pilot proportional directional valve 14, a hand wheel 10, a pressure sensor 17, an angle sensor 7, a servo motor 18 and a controller 15, wherein the supporting cylinder 5 is fixed on the valve body 1, a sealing end cover 8 is arranged on the supporting cylinder 5, and the valve body 1 comprises an inlet and an outlet.
The valve rod 3 penetrates through the support cylinder 5, the sealing end cover 8 and the gear motor 9, one end of the valve rod 3 is provided with a plug 2, the other end of the valve rod is connected with the servo motor 18 through a coupler, and the hand wheel 10 is fixed on the valve rod 3; the plug 2 extends into the valve body 1, and the axis of the inlet of the valve body 1 is vertical to the axis of the valve rod 3; an external thread section is arranged on the valve rod 3 close to the plug 2 and is meshed with an internal thread arranged on the supporting cylinder 5; the gear motor 9 comprises a housing 73, a first gear 91 and a second gear 94, wherein an oil suction port 96 and an oil outlet 93 are arranged on the housing 73, an inlet of the valve body 1 is connected to an oil inlet of the electromagnetic pilot proportional directional valve 14 through a first stop valve 16, and an oil outlet of the electromagnetic pilot proportional directional valve 14 is connected to an outlet of the valve body 1; an oil suction port 96 and an oil outlet 93 of the gear motor 9 are respectively connected to two working ports of the electromagnetic pilot proportional directional valve 14 through pipelines, and a second stop valve 13 is installed between the two pipelines. The pressure sensor 17 is used for acquiring a pressure value at the inlet of the valve body 1 and transmitting the pressure value to the controller 15, and the controller 15 controls the electromagnetic pilot proportional directional valve 14 to realize the direction change according to the pressure value. The angle sensor 17 is used for measuring the rotation angle of the valve rod, the rotation angle is transmitted to the controller 15, the controller 15 judges whether the pressure relief requirement corresponding to the pressure value at the moment can be met according to the rotation angle, if the pressure relief requirement cannot be met, the controller 15 can control the electromagnetic pilot proportional directional valve 14 to increase the working port to pass through the flow, the lifting height of the valve rod is increased, if the angle sensor 7 detects that the valve rod 3 does not rotate at the moment, the controller 15 controls the servo motor 18 to rotate, the lifting height of the valve rod 3 is achieved, and pressure relief is achieved.
In a preferred embodiment of the present invention, the first gear 91 is provided with an internal spline, the valve stem 3 is provided with an external spline, and the valve stem 3 and the first gear 91 are connected by a sliding spline. Adopt spline connection to guarantee that first gear 91 drives valve rod 3 pivoted time, valve rod 3 can also reciprocate.
As a preferred embodiment of the present invention, one end of the coupling is connected to an output shaft of the servo motor 18, an internal spline is provided inside the other end, and the end of the valve rod 3 is matched with the coupling through a sliding internal spline, so that the valve rod 3 can rotate and move up and down.
In a preferred embodiment of the present invention, a seal ring 4 is installed between the support cylinder 5 and the valve body 1.
And a packing 6 is arranged between the valve rod 3 and the support cylinder 5. The supporting cylinder 5 is provided with a cavity, a packing cavity is formed between the inner wall of the cavity and the valve rod 3, and the sealing end cover 8 compresses the packing 6 in the packing cavity.
As a preferred embodiment of the present invention, the hand wheel 10 is fixed to the valve stem 3 by a nut 12. A washer 11 for preventing looseness is arranged between the hand wheel 10 and the nut 12. Be equipped with the mounting hole on the hand wheel 10, the valve rod 3 passes the mounting hole, and the mounting hole is spacing to hand wheel 10.
Example (b):
as shown in fig. 1 to 3, a double-control axial flow mechanical pilot operated surge relief valve directly driven by a gear motor 9 comprises a surge relief valve body 1, wherein a plug 2 is installed at an internal thread part of a support cylinder 5 with an internal thread in a meshing manner, the support cylinder 5 with the internal thread is installed on the valve body 1, a sealing ring 4 is installed between the support cylinder 5 with the internal thread and the surge relief valve body 1, a packing cavity is formed between the outer side of a valve rod 3 where the plug 2 is located and the inner part of the support cylinder 5 with the internal thread, a packing 6 is installed in the packing cavity, the packing 6 is tightly pressed in the support cylinder 5 through a sealing end cover 8, the valve rod 3 is provided with a hand wheel 10, the gear motor 9 for driving the plug 2 to drive the valve rod 3 is installed between the sealing end cover 8 and the hand wheel 10, and the valve rod 3 is provided with a nut 12 and a gasket 11 for fixing the hand wheel 10. The top end of the valve rod 3 is connected with the servo motor 18 through a coupler, and the valve rod 3 is connected with the coupler through a sliding spline.
An inlet of the valve body 1 is connected to an oil inlet of the electromagnetic pilot proportional directional valve 14 through a first stop valve 16, and an oil outlet of the electromagnetic pilot proportional directional valve 14 is connected to an outlet of the valve body 1; an oil suction port 96 and an oil outlet 93 of the gear motor 9 are respectively connected to two working ports of the electromagnetic pilot proportional directional valve 14 through pipelines, and a second stop valve 13 is installed between the two pipelines. The pressure sensor 17 is installed at the inlet of the valve body 1 and used for measuring the pressure value at the inlet of the valve body 1 and transmitting the pressure value to the controller 15, and the controller 15 controls the electromagnetic pilot proportional directional valve 14 to realize the reversing according to the pressure value. The angle sensor 7 is arranged between the sealing end cover 8 and the vane type hydraulic motor and used for measuring the rotation angle of the valve rod and transmitting the rotation angle to the controller 15, the controller 15 judges whether the pressure release requirement corresponding to the pressure value at the moment can be met or not according to the rotation angle, if the pressure release requirement can not be met, the controller 15 can control the electromagnetic type pilot proportional directional valve 14 to increase the flow of the working opening and the rotation angle of the valve rod, and therefore the opening area of the valve can be adjusted. If angle sensor 7 detects that valve rod 3 does not rotate this moment, then controller 15 control servo motor 18 rotates to realize valve rod 3 and promote the height, realize the pressure release, if angle sensor 7 has not monitored valve rod 3 and has rotated this moment, then controller 15 sends out the police dispatch newspaper, opens the relief valve through hand wheel 10 this moment.
The valve body 1 is an axial flow valve body, namely, the inlet axis of the valve body 1 is vertical to the axis of the valve rod 3.
The gear motor 9 may be an existing gear motor 9. The gear motor 9 comprises a housing, a first gear 91, a second gear 94, an oil suction opening 96 and an oil outlet 93, wherein an inner spline is arranged on the first gear 91, an outer spline is arranged on the valve rod 3, and the valve rod 3 is connected with the first gear 91 through a sliding spline. Adopt spline connection to guarantee that first gear 91 drives valve rod 3 pivoted time, valve rod 3 can also reciprocate. A second gear 94 is fixed to the countershaft 92.
When the electromagnetic pilot proportional directional valve 14 is in the left position during normal operation, oil in the pipeline enters the oil suction port 96 of the gear motor 9 through the working port of the electromagnetic pilot proportional directional valve 14, so that the gear motor 9 rotates clockwise, and the main valve is kept in a closed state. When the controller 15 receives the signal that the oil pressure detected by the pressure sensor 11 rises and exceeds the pressure set by the valve, the controller 15 sends a signal to the electromagnetic pilot proportional directional valve 14 to make the electromagnetic pilot proportional directional valve operate at the right position, the oil pressure in the pipeline enters the oil outlet 93 of the gear motor 9 to suck oil, the gear motor 9 rotates counterclockwise, the main valve is opened, and thus the overpressure safety relief function is performed.
The hand wheel 10 is another mode for driving the plug 2, which is adopted when the main valve cannot normally release pressure due to faults in work in a mode of preventing the gear motor 9, the servo motor 18 or the electromagnetic pilot proportional directional valve 14 from being directly driven. When the gear motor 9 works normally, the second stop valve 13 is in a closed state, and when the gear motor 9 breaks down, the second stop valve 13 needs to be opened to close the first stop valve 16, and then the hand wheel 10 is rotated to drive the plug 2 to move upwards to open the valve port, so that the purpose of pressure relief is achieved.
The working principle of the invention is as follows:
in the process of normally conveying oil in the pipeline, the water hammer relief valve is in a closed state, when the water hammer phenomenon occurs in the pipeline, the oil at the position where the water hammer occurs is compressed due to the volume, and the oil pressure rapidly rises and is transmitted along the pipeline. The inlet end of the valve body 1 is connected with a main oil pipeline, and the outlet end of the valve body is connected with an oil tank and used for receiving oil discharged by pressure relief.
1) Gear motor 9 drives the pressure relief mode:
normally, the second cut-off valve 13 is closed, and the first cut-off valve 16 is opened. The electromagnetic pilot proportional directional valve 14 is set to have a pressure threshold of 10MPa, and when the pressure threshold in the oil transportation pipeline is smaller than 10MPa, the pressure release valve is always kept in a closed state, as shown in fig. 1.
And a pressure sensor 17 is installed at the inlet of the pressure relief valve and used for monitoring the oil pressure of the pipeline in real time, the detected oil pressure is transmitted to the controller 15, and the electromagnetic pilot proportional directional valve 14 is controlled to work through the controller 15. When the detection value of the pressure sensor 17 does not reach the set oil pressure threshold value, the controller 15 controls the electromagnetic pilot proportional directional valve 14 to work at the left position, at this time, high-pressure oil at the inlet of the valve body 1 enters the left oil suction port 96 of the gear motor 9 through the first stop valve 16 and the electromagnetic pilot proportional directional valve 14, the right oil outlet 93 of the gear motor 9 is communicated with the outlet end of the valve body 1, and because a pressure difference exists between the oil suction port 96 and the oil outlet 93 of the gear motor 9, the first gear 91 of the gear motor 9 rotates clockwise, so that the choke plug 2 and the surge relief valve body 1 are locked, and the oil cannot flow from the inlet to the outlet of the surge relief valve body 1. When water hammer occurs in a pipeline, if the oil pressure value detected by the pressure sensor 17 rises and exceeds a set threshold value, the controller 15 controls the electromagnetic pilot proportional directional valve 14 to work at the right position, at the moment, high-pressure oil at the inlet end of the valve body 1 is communicated with an oil outlet 93 at the right end of the gear motor 9, an oil suction port 96 at the left end of the gear motor 9 is communicated with an outlet of the valve body 1, at the moment, the first gear 91 of the gear motor 9 rotates anticlockwise due to pressure difference, so that the plug 2 moves upwards, as shown in fig. 3, meanwhile, the angle sensor 7 detects the actually rotated angle of the valve rod 3, signals are transmitted to the controller 15, the controller 15 judges whether the actually rotated angle meets the rotating angle requirement of the pressure, and if the actually rotated angle, the controller 15 controls the pilot proportional directional valve 14 to increase the flow, so that more electromagnetic high-pressure oil enters the gear motor 9, so that the valve rod 3 rotates by a larger angle, and the pressure relief capacity is improved. If the angle sensor 7 detects that the actual rotating angle of the valve rod 3 is not changed, namely the servo motor 18 does not respond, the controller 15 gives an alarm to remind related personnel to manually rotate the hand wheel 10 to complete pressure relief.
2) The hand wheel drives the pressure release mode:
when the opening mode 1) cannot open the relief valve, the second stop valve 13 needs to be opened, the first stop valve 16 needs to be closed, and then the main valve needs to be opened or closed by driving the valve rod 3 through the hand wheel 10, so that the inlet and the outlet of the valve body 1 of the water hammer relief valve are communicated, and high-pressure oil flows from the inlet to the outlet, so that the oil pressure in a pipeline is reduced, and the effect of relieving pressure is achieved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the accompanying drawings, or directly or indirectly applied to other related system fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a gear motor and two accuse axial compressor safety type water hammer relief valve of servo motor which characterized in that:
comprises a valve body (1), a supporting cylinder (5), a gear motor (9), a valve rod (3), an electromagnetic pilot proportional directional valve (14), a hand wheel (10), a pressure sensor (17), a controller (15), a servo motor (19) and an angle sensor (18),
the supporting cylinder (5) is fixed on the valve body (1), a sealing end cover (8) is arranged on the supporting cylinder (5), and the valve body (1) comprises an inlet and an outlet;
the valve rod (3) penetrates through the support cylinder (5), the sealing end cover (8) and the gear motor (9), one end of the valve rod (3) is provided with a plug (2), the other end of the valve rod is connected with a servo motor (19) through a coupler, and a hand wheel (10) is fixed on the valve rod (3); the plug (2) extends into the valve body (1), and the axis of an inlet of the valve body (1) is vertical to the axis of the valve rod (3);
an external thread section is arranged on the valve rod (3) close to the plug (2), and the external thread section is meshed with an internal thread arranged on the supporting cylinder (5);
the gear motor (9) comprises a shell, a first gear (91) and a second gear (94), an oil suction port (96) and an oil outlet (93) are formed in the shell, and the first gear (91) drives the valve rod (3) to rotate;
an inlet of the valve body (1) is connected to an oil inlet of the electromagnetic pilot proportional directional valve (14) through a first stop valve (16), and an oil outlet of the electromagnetic pilot proportional directional valve (14) is connected to an outlet of the valve body (1); an oil suction port (96) and an oil outlet (93) of the gear motor (9) are respectively connected to two working ports of the electromagnetic pilot proportional directional valve (14) through pipelines, and a second stop valve (13) is arranged between the two pipelines;
the pressure sensor (17) is used for acquiring a pressure value at an inlet of the valve body (1) and transmitting the pressure value to the controller (15), and the controller (15) controls the electromagnetic pilot proportional reversing valve (14) to realize reversing according to the pressure value;
angle sensor (18) are used for measuring valve rod (3) turned angle, and send this turned angle to controller (15), controller (15) judge according to turned angle whether can satisfy the pressure release requirement that the pressure value corresponds this moment, if unsatisfied, controller (15) can control electromagnetic type guide proportional directional control valve (14) increase working hole and pass through flow, increase valve rod (3) lifting height, if angle sensor (18) detected valve rod (3) and do not rotate this moment, then controller (15) control servo motor (19) rotate, thereby realize valve rod (3) lifting height, realize the pressure release.
2. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor as claimed in claim 1, wherein:
the valve rod (3) is connected with the first gear (91) through a spline.
3. The double-control axial flow safety type water hammer relief valve with the gear motor and the servo motor according to claim 2, characterized in that:
the first gear (91) is provided with an internal spline, and the valve rod (3) is provided with an external spline.
4. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor as claimed in claim 3, wherein:
one end of the coupler is connected with an output shaft of the servo motor (19), an internal spline is arranged inside the other end of the coupler, and an external spline matched with the internal spline of the coupler is arranged on the end part of the valve rod (3).
5. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor according to claim 4, characterized in that:
and a sealing ring (4) is arranged between the supporting cylinder (5) and the valve body (1).
6. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor according to claim 5, is characterized in that:
the supporting cylinder (5) is provided with a cavity, a packing cavity is formed between the inner wall of the cavity and the valve rod (3), and the sealing end cover (8) compresses the packing (6) in the packing cavity.
7. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor according to claim 6, is characterized in that:
the hand wheel (10) is fixed on the valve rod (3) through a nut (12).
8. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor according to claim 7, is characterized in that:
and a gasket (11) for preventing looseness is arranged between the hand wheel (10) and the nut (12).
9. The double-control axial-flow safety water hammer relief valve with the gear motor and the servo motor according to claim 8, is characterized in that:
be equipped with the mounting hole on hand wheel (10), valve rod (3) pass the mounting hole, and the mounting hole is spacing to hand wheel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173366.9A CN112879624B (en) | 2021-02-09 | 2021-02-09 | Gear motor and servo motor double-control axial flow safety type water hammer relief valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173366.9A CN112879624B (en) | 2021-02-09 | 2021-02-09 | Gear motor and servo motor double-control axial flow safety type water hammer relief valve |
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| Publication Number | Publication Date |
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| CN112879624A CN112879624A (en) | 2021-06-01 |
| CN112879624B true CN112879624B (en) | 2023-01-17 |
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| EP3027941A2 (en) * | 2013-08-02 | 2016-06-08 | Daniel Measurement and Control, Inc. | A flow control system and control valve having closure assistance |
| EP3102861A1 (en) * | 2014-02-03 | 2016-12-14 | Daniel Measurement and Control, Inc. | Relief valve with position indication |
| CN109944969A (en) * | 2019-03-08 | 2019-06-28 | 河南宇宙流体科技有限公司 | A kind of flow control valve of the high-performance without water hammer |
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2021
- 2021-02-09 CN CN202110173366.9A patent/CN112879624B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5360032A (en) * | 1992-08-31 | 1994-11-01 | Rudolf Schenk | Control valve assembly |
| CN101598232A (en) * | 2009-07-20 | 2009-12-09 | 山东大学 | The control valve electro-hydraulic driver |
| CN104051754A (en) * | 2013-03-13 | 2014-09-17 | 通用汽车环球科技运作有限责任公司 | Thermal pressure relief devices and related systems and methods |
| EP3027941A2 (en) * | 2013-08-02 | 2016-06-08 | Daniel Measurement and Control, Inc. | A flow control system and control valve having closure assistance |
| EP3102861A1 (en) * | 2014-02-03 | 2016-12-14 | Daniel Measurement and Control, Inc. | Relief valve with position indication |
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| Publication number | Publication date |
|---|---|
| CN112879624A (en) | 2021-06-01 |
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