CN112943991B - Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor - Google Patents
Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor Download PDFInfo
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- CN112943991B CN112943991B CN202110173381.3A CN202110173381A CN112943991B CN 112943991 B CN112943991 B CN 112943991B CN 202110173381 A CN202110173381 A CN 202110173381A CN 112943991 B CN112943991 B CN 112943991B
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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
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
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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
- F16K37/0091—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
Abstract
The invention relates to the technical field of water hammer relief valves, in particular to a multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by a vane motor, which comprises a hand wheel, a vane motor, a valve cover, an electromagnetic pilot valve, a mechanical pilot valve and a main valve body, wherein the hand wheel is connected with the vane motor through a connecting rod; the special-shaped external thread plug is rotatably connected with the valve cover, and the blade motor is used for driving the special-shaped external thread plug to rotate; the oil circuit between the main valve body and the vane motor is communicated with the second stop valve through the electromagnetic pilot valve, the mechanical pilot valve and the first stop valve; the oil inlet of the main valve body is provided with a pressure sensor, and the controller acquires the pressure value of the pressure sensor and controls the electromagnetic pilot valve to change direction according to the pressure value. The invention provides a multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by a vane motor, which solves the problem that the existing water hammer relief valve cannot automatically relieve pressure.
Description
Technical Field
The invention relates to the technical field of water hammer relief valves, in particular to a multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by a vane motor.
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 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 structure of the pilot valve and the diameter of the pressure guiding pipe, and the liquid discharging speed in the main valve cavity is low, 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 aggravated, and the service life is short.
Disclosure of Invention
The invention provides a multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by a vane motor, which aims to solve the problem that the existing water hammer relief valve cannot automatically relieve pressure.
The technical scheme for solving the problems is as follows: a multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by a vane motor comprises a hand wheel, the vane motor, a valve cover, an electromagnetic pilot valve, a mechanical pilot valve, a controller and a main valve body;
the bottom of the hand wheel is provided with a special-shaped external thread plug, one end of the special-shaped external thread plug sequentially penetrates through the vane motor and the valve cover from top to bottom, extends into the main valve body and is in sealing fit with the main valve body, the special-shaped external thread plug is rotatably connected with the valve cover, and the vane motor is used for driving the special-shaped external thread plug to rotate;
the included angle between the special-shaped external thread plug and the axis of the oil inlet of the main valve body is 90 degrees;
oil inlets of the electromagnetic pilot valve and the mechanical pilot valve are connected in series and then are connected with an oil inlet of the main valve body through a first stop valve, and oil outlets of the electromagnetic pilot valve and the mechanical pilot valve are connected to an oil outlet of the main valve body; a first oil port of the vane motor is connected to one working port of the electromagnetic pilot valve and one working port of the mechanical pilot valve through a first pipeline, a second oil port of the vane motor is connected to the other working port of the electromagnetic pilot valve and the other working port of the mechanical pilot valve through a second pipeline, and a second stop valve is arranged between the first pipeline and the second pipeline;
the oil inlet of the main valve body is provided with a pressure sensor, and the controller acquires the pressure value of the pressure sensor and controls the electromagnetic pilot valve to change direction according to the pressure value.
Preferably, the vane motor comprises an upper cavity, a lower cavity and a base which are connected in sequence; the upper cavity and the lower cavity are respectively provided with a first oil port and a second oil port, and the first oil port and the second oil port are symmetrically arranged relative to the axis of the vane motor;
the upper cavity and the lower cavity form a containing cavity, an upper oil distribution disc, a stator ring and a lower oil distribution disc are sequentially arranged in the containing cavity, a rotor is arranged inside the stator ring, and a plurality of blades are uniformly distributed on the outer wall of the rotor.
Preferably, the rotor is sleeved on the outer wall of the special-shaped external thread plug and is connected with the special-shaped external thread plug through a spline.
Preferably, the valve cover comprises a sealing end cover and a supporting cylinder, threads are formed in two ends of the supporting cylinder, one end of the supporting cylinder is connected with the special-shaped external thread plug through an internal thread, and the other end of the supporting cylinder is connected with the sealing end cover through an external thread.
Preferably, a first sealing ring is arranged between the outer wall of the special-shaped external thread plug and the inner wall of the supporting cylinder; the supporting cylinder is connected with the main valve body through threads, and a second sealing ring is installed at the meshing position of the supporting cylinder and the internal threads of the main valve body.
Preferably, the hand wheel is connected with the special-shaped external thread plug through a nut, and a gasket is arranged between the nut and the hand wheel.
Preferably, the lower oil distribution disc is provided with a sealing ring at a contact part with the lower cavity body.
Preferably, the upper cavity is provided with a sealing ring at the contact part with the lower cavity.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention can accurately sense the water hammer phenomenon in the main oil circuit through the pressure sensor arranged on the main valve body, and controls the pressure release valve to rapidly and accurately act through the controller to complete the pressure release.
2) Meanwhile, the mechanical pilot valve and the electromagnetic pilot valve are adopted to form redundancy control, the working reliability of the water hammer relief valve is improved, and when the electromagnetic pilot valve breaks down, pressure relief can still be completed through the mechanical pilot valve.
3) Meanwhile, the valve is opened and closed in a manual mode of a hydraulic motor and a hand wheel, the hydraulic motor can output large-torque force to realize accurate opening of the valve, and when the hydraulic motor fails, the stop valve can be opened, and then the hand wheel is manually rotated to open the pressure release valve, so that the reliability is further improved.
4) Adopt pressure sensor to carry out the detection of water hammer phenomenon to transmit monitoring data to the controller and handle, then control the electromagnetism pilot valve and move, accomplish the pressure release, and can carry out the state control of relief valve through long-range, be convenient for realize the intelligent control of water hammer relief valve.
Drawings
Fig. 1 is a schematic structural diagram of the water hammer relief valve in the absence of water hammer.
Fig. 2 is a schematic structural diagram of the water hammer relief valve in the presence of water hammer according to the present invention.
Fig. 3 is a schematic structural view of the vane motor of the present invention.
In the figure: 1. the main valve body, 2, a support cylinder, 3, a special-shaped external thread plug, 4, a first sealing ring, 5, a second sealing ring, 6, a sealing end cover, 7, a vane motor, 71, a base, 72, a bolt, 73, a lower cavity, 74, a lower oil distribution disc, 75, a stator ring, 76, a rotor, 77, a vane, 78, an upper oil distribution disc, 79, an upper cavity, 8, a hand wheel, 9, a gasket, 10, a nut, 11, a pressure sensor, 12, a controller, 13, an electromagnetic pilot valve, 14, a first stop valve, 15, a mechanical pilot valve, 16 and a second stop valve.
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 clearly and completely described below with reference to the accompanying drawings of the 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.
Example 1: the multi-redundancy electromagnetic pilot safety water hammer relief valve directly driven by the vane motor is shown in figures 1-3.
Referring to fig. 1, the water hammer relief valve includes a handwheel 8, a vane motor 7, a sealing end cover 6, a support cylinder 2, an electromagnetic pilot valve 13, a mechanical pilot valve 15, a controller 12 and a main valve body 1; the bottom of the hand wheel 8 is provided with a special-shaped external thread plug 3, one end of the special-shaped external thread plug 3 sequentially penetrates through the vane motor 7, the supporting cylinder 2 and the sealing end cover 6 from top to bottom, extends into the main valve body 1 and is in sealing fit with the main valve body 1; one end of the supporting cylinder 2 is meshed with the special-shaped external thread plug 3 through an internal thread; the blade motor 7 is used for driving the special-shaped external thread plug 3 to rotate.
The included angle between the special-shaped external thread plug 3 and the axis of the oil inlet of the main valve body 1 is 90 degrees;
oil inlets of the electromagnetic pilot valve 13 and the mechanical pilot valve 15 are connected in series and then connected with an oil inlet of the main valve body 1 through the first stop valve 14, and oil outlets of the electromagnetic pilot valve 13 and the mechanical pilot valve 15 are connected to an oil outlet of the main valve body 1; a first oil port of the vane motor 7 is connected to one working port of the electromagnetic pilot valve 13 and one working port of the mechanical pilot valve 15 through a first pipeline, a second oil port of the vane motor 7 is connected to the other working port of the electromagnetic pilot valve 13 and the other working port of the mechanical pilot valve 15 through a second pipeline, and a second stop valve 16 is arranged between the first pipeline and the second pipeline;
a pressure sensor 11 is arranged at an oil inlet of the main valve body 1, and a controller 12 obtains a pressure value of the pressure sensor 11 and controls the electromagnetic pilot valve 13 to change direction according to the pressure value.
A first sealing ring 4 is arranged on the outer wall of the special-shaped external thread plug 3 and inside the supporting cylinder 2; a second sealing ring 5 is arranged at the meshing position of the external thread of the supporting cylinder 2 and the internal thread of the main valve body 1, and a sealing end cover 6 is arranged at the upper end of the first sealing ring 4; the spline part of the special-shaped external thread plug 3 is matched with the spline of the rotor 76 in the blade motor 7.
Referring to fig. 3, the vane motor 7 includes an upper chamber 79, a lower chamber 73 and a base 71, the lower chamber 73 is connected to the base 71 by three uniform bolts 72, a lower oil distribution disc 74, a stator ring 75 and an upper oil distribution disc 78 are all installed inside the chamber formed by the upper chamber 79 and the lower chamber 73, and the lower oil distribution disc 74 is sealed by a sealing ring at the contact position with the lower chamber 73; the stator ring 75 is installed on the upper part of the lower oil distribution disc 74, the rotor 76 is arranged inside the stator ring 75, twelve blades 77 are uniformly installed on the rotor 76, the upper oil distribution disc 78 is installed on the upper part of the stator ring 75 and fixed through bolts, and the upper cavity 79 is connected with the lower cavity 73 through bolts and sealed through sealing rings. The upper cavity 79 and the lower cavity 73 are respectively provided with a first oil port and a second oil port, and the first oil port and the second oil port are symmetrically arranged relative to the axis of the vane motor 7.
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, and when a 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 propagated along the pipeline. The inlet end of the main valve body 1 is connected with a main oil pipeline, and the outlet end of the main valve body is connected with an oil tank for receiving oil discharged by pressure relief.
When no water hammer phenomenon exists in the main oil path, the pressure sensor 11 detects that the pressure is less than 10MPa, the electromagnetic pilot valve 13 and the mechanical pilot valve 15 are in the left position, the special-shaped external thread plug 3 is in sealing fit with the main valve body 1, and the main valve body 1 oil path is in a closed state.
When water hammer occurs in the main oil path, the inlet pressure of the main valve body 1 is greater than 10MPa, the mechanical pilot valve 15 is in the right position, meanwhile, the controller 12 detects that the oil pressure is greater than 10MPa, the controller 12 controls the electromagnetic pilot valve 13 to be in the right position, oil enters the first oil port of the upper cavity 79 of the vane motor 7 from the inlet of the main valve body 1 after passing through the oil inlet of the electromagnetic pilot valve 13 and the mechanical pilot valve 15 through the first stop valve 14, and then returns to the outlet oil path of the main valve body 1 through the oil outlet of the electromagnetic pilot valve 13 and the mechanical pilot valve 15 after passing through the second oil port on the lower cavity 73 after passing through the vane motor 7. When hydraulic oil passes through the vane motor 7, the rotor 76 of the vane motor 7 is pushed to rotate anticlockwise, the spline on the rotor 76 drives the special-shaped external thread plug 3 to rotate anticlockwise, the special-shaped external thread plug is made to rise under the action of a lead screw formed between the special-shaped external thread plug 3 and the supporting cylinder 2, a valve in the main valve body 1 is made to be opened, and liquid in the main oil way flows out through the main valve body 1 to finish pressure relief.
The electromagnetic pilot valve 13 and the mechanical pilot valve 15 are of redundant design, and when one of the two fails, the other can ensure that the pressure relief valve works normally.
When the vane motor 7 breaks down, a manual mode can be adopted at the moment, the first stop valve 14 is closed, the second stop valve 16 is opened, the left oil port and the right oil port of the vane motor 7 are communicated, negative pressure is eliminated, the special-shaped external thread plug 3 rotates anticlockwise by rotating the hand wheel 8, the valve in the main valve body 1 is opened, and pressure relief is completed.
After the pressure relief is completed, the pressure in the oil path is less than 10MPa, the mechanical pilot valve 15 is in the left position, meanwhile, the controller 12 receives a signal of the pressure sensor 11 to enable the electromagnetic pilot valve 13 to be in the left position, oil enters the electromagnetic pilot valve 13 from the inlet of the main valve body 1 through the first stop valve 14, enters the second oil port of the lower cavity 73 of the vane motor 7 after the mechanical pilot valve 15, the oil flows out from the first oil port of the upper cavity 79 and flows back to the outlet of the main valve body 1 through the electromagnetic pilot valve 13 and the mechanical pilot valve 15, at the moment, the vane motor 7 rotates clockwise, the spline on the rotor 76 drives the special-shaped external thread plug 3 to rotate clockwise, the special-shaped external thread plug 3 descends, the valve in the main valve body 1 is closed, and the oil is prevented from flowing out.
If the blade motor 7 fails after the pressure relief is completed, the valve cannot be closed, the first stop valve 14 is closed, the second stop valve 16 is opened, the hand wheel 8 is rotated clockwise, the special-shaped external thread plug 3 rotates clockwise and descends, the valve is closed, and the pressure relief is stopped.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related system fields are also included in the scope of the present invention.
Claims (8)
1. The utility model provides a many redundant electromagnetism guide's formula safety type water hammer relief valve that vane motor directly driven which characterized in that: comprises a hand wheel (8), a vane motor (7), a valve cover, an electromagnetic pilot valve (13), a mechanical pilot valve (15), a controller (12) and a main valve body (1);
the bottom of the hand wheel (8) is provided with a special-shaped external thread plug (3), one end of the special-shaped external thread plug (3) sequentially penetrates through a vane motor (7) and a valve cover from top to bottom, extends into the main valve body (1) and is in sealing fit with the main valve body (1), the special-shaped external thread plug (3) is rotatably connected with the valve cover, and the vane motor (7) is used for driving the special-shaped external thread plug (3) to rotate;
the included angle between the special-shaped external thread plug (3) and the axis of the oil inlet of the main valve body (1) is 90 degrees;
oil inlets of the electromagnetic pilot valve (13) and the mechanical pilot valve (15) are connected in series and then are connected with an oil inlet of the main valve body (1) through a first stop valve (14), and oil outlets of the electromagnetic pilot valve (13) and the mechanical pilot valve (15) are connected to an oil outlet of the main valve body (1); a first oil port of the vane motor (7) is connected to one working port of the electromagnetic pilot valve (13) and one working port of the mechanical pilot valve (15) through a first pipeline, a second oil port of the vane motor (7) is connected to the other working port of the electromagnetic pilot valve (13) and the other working port of the mechanical pilot valve (15) through a second pipeline, and a second stop valve (16) is arranged between the first pipeline and the second pipeline;
the oil inlet of the main valve body (1) is provided with a pressure sensor (11), and the controller (12) acquires the pressure value of the pressure sensor (11) and controls the electromagnetic pilot valve (13) to change direction according to the pressure value.
2. The multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by the vane motor as claimed in claim 1, wherein: the vane motor (7) comprises an upper cavity (79), a lower cavity (73) and a base (71) which are connected in sequence; the upper cavity (79) and the lower cavity (73) are respectively provided with a first oil port and a second oil port, and the first oil port and the second oil port are symmetrically arranged relative to the axis of the vane motor (7);
an upper oil distribution disc (78), a stator ring (75) and a lower oil distribution disc (74) are sequentially arranged in an accommodating cavity formed by the upper cavity (79) and the lower cavity (73), a rotor (76) is arranged inside the stator ring (75), and a plurality of blades (77) are uniformly distributed on the outer wall of the rotor (76).
3. The multi-redundancy electromagnetic pilot-operated safety type water hammer relief valve directly driven by the vane motor as claimed in claim 2, wherein: the rotor (76) is sleeved on the outer wall of the special-shaped external thread plug (3) and is connected with the special-shaped external thread plug (3) through a spline.
4. The multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by the vane motor as claimed in claim 3, wherein: the valve cover comprises a sealing end cover (6) and a supporting cylinder (2), threads are formed in two ends of the supporting cylinder (2), one end of the supporting cylinder (2) is connected with the special-shaped external thread plug (3) through an internal thread, and the other end of the supporting cylinder is connected with the sealing end cover (6) through an external thread.
5. The multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by the vane motor as claimed in claim 4, wherein: a first sealing ring (4) is arranged between the outer wall of the special-shaped external thread plug (3) and the inner wall of the supporting cylinder (2); the supporting cylinder (2) is connected with the main valve body (1) through threads, and a second sealing ring (5) is installed at the meshing position of the supporting cylinder (2) and the internal threads of the main valve body (1).
6. The multi-redundancy electromagnetic pilot-operated safety type water hammer relief valve directly driven by the vane motor as claimed in claim 5, wherein: the hand wheel (8) is connected with the special-shaped external thread plug (3) through a nut (10) and a gasket (9).
7. The multi-redundancy electromagnetic pilot-operated safety type water hammer relief valve directly driven by the vane motor as claimed in claim 6, wherein: the lower oil distribution disc (74) is sealed by a sealing ring at the contact part with the lower cavity body (73).
8. The multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by the vane motor as claimed in claim 7, wherein: the upper cavity (79) is sealed by a sealing ring at the contact part of the upper cavity and the lower cavity (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173381.3A CN112943991B (en) | 2021-02-09 | 2021-02-09 | Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173381.3A CN112943991B (en) | 2021-02-09 | 2021-02-09 | Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor |
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| CN112943991A CN112943991A (en) | 2021-06-11 |
| CN112943991B true CN112943991B (en) | 2023-01-17 |
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| WO2000008364A1 (en) * | 1998-08-05 | 2000-02-17 | Zhaokeng Pan | Electric-control valve for regulating flow of fluid |
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