CN112943992B - Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor - Google Patents
Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor Download PDFInfo
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- CN112943992B CN112943992B CN202110174148.7A CN202110174148A CN112943992B CN 112943992 B CN112943992 B CN 112943992B CN 202110174148 A CN202110174148 A CN 202110174148A CN 112943992 B CN112943992 B CN 112943992B
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the technical field of water hammer relief valves, in particular to a multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by a gear motor, which comprises a hand wheel, the gear motor, a special-shaped external thread plug, a valve cover, an electromagnetic pilot valve, a controller, a mechanical pilot valve and a main valve body, wherein the hand wheel is connected with the gear motor through a pipeline; the special-shaped external thread plug is rotatably connected with the valve cover, and the gear motor is used for driving the special-shaped external thread plug to rotate; an electromagnetic pilot valve, a mechanical pilot valve, a first stop valve and a second stop valve are arranged on an oil path between the main valve body and the gear motor; a pressure sensor is arranged at an oil inlet of the main valve body, and the controller acquires a pressure value of the pressure sensor and controls the electromagnetic pilot valve to change the direction according to the pressure value. The invention provides a multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by a gear motor, which solves the problem that the conventional water hammer relief valve cannot realize automatic pressure relief when in use.
Description
Technical Field
The invention relates to the technical field of water hammer relief valves, in particular to a multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by a gear motor.
Background
In a long-distance petroleum pipeline, water hammer can be caused by conditions of accidental pump stop or abnormal opening and closing of a valve, and pipe explosion accidents caused by local overpressure in the pipeline can be caused. 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 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 aggravated, and the service life is short.
Disclosure of Invention
The invention provides a multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by a gear motor, and aims to solve the problem that automatic pressure relief cannot be realized when an existing water hammer relief valve is used.
The technical scheme for solving the problems is as follows: a multi-redundancy electromagnetic pilot axial-flow safety type water hammer relief valve directly driven by a gear motor comprises a hand wheel, the gear motor, a valve cover, an electromagnetic pilot valve, a controller, a mechanical pilot valve 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 a gear motor and a 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 gear 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 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 gear 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 gear 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 the direction according to the pressure value.
Preferably, the gear motor includes a housing and first and second gears 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, the oil inlet and the oil outlet are both formed in the shell, the oil inlet and the oil outlet are symmetrically arranged relative to the axis of the gear motor, and the oil inlet and the oil outlet are respectively located on two sides of a connecting line of the center of the first gear and the center of the second gear.
Preferably, the first gear is provided with an internal spline, the special-shaped external thread plug is provided with an external spline, and the second end of the special-shaped external thread plug penetrates through the internal spline and then is connected with the hand wheel.
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 sealing ring is arranged between the outer wall of the special-shaped external thread plug and the inner wall of the supporting cylinder; and a sealing ring is arranged at the meshing position of the supporting cylinder and the internal thread 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.
Compared with the prior art, the invention has the beneficial effects that:
1) The automatic pressure relief valve can achieve the purpose of automatic pressure relief through the action of the electromagnetic pilot valve or the mechanical valve, and when the valve body fails, the normal work of the pressure relief valve can be guaranteed through a manual operation mode.
2) The electromagnetic pilot valve is adopted, the reversing speed is high, the main valve acts rapidly, and pressure can be relieved in time.
3) The requirement on the liquid medium is not high, a certain amount of impurities are allowed to exist in the liquid medium, and the application scene of the water hammer relief valve is widened.
4) The redundant mechanical pilot valve is arranged, and when the electromagnetic pilot valve fails, the normal work of the water hammer relief valve can still be guaranteed.
5) The manual operation device of the water hammer relief valve is arranged, so that when the electromagnetic pilot valve and the mechanical pilot valve are invalid, the normal work of the water hammer relief valve can be guaranteed in a manual operation mode.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the construction of the gear motor of the present invention.
FIG. 3 is a schematic diagram of the opening of the main valve spool according to the present invention.
In the figure: 1. the main valve body, 2, a support cylinder, 3, a second seal ring, 4, a special-shaped external thread plug, 5, a first seal ring, 6, a seal end cover, 7, a hand wheel, 8, a gear motor, 81, a first gear, 82, a second gear, 83, an oil inlet, 84, an oil outlet, 85, a shell, 9, a pressure sensor, 10, a controller, 11, an electromagnetic pilot valve, 12, a mechanical pilot valve, 13, a first stop valve, 14 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.
A multi-redundancy electromagnetic pilot axial-flow safety type water hammer relief valve directly driven by a gear motor is shown in figures 1-3 and comprises a hand wheel 7, a gear motor 8, a valve cover, an electromagnetic pilot valve 11, a controller 10, a mechanical pilot valve 12 and a main valve body 1.
The bottom of the hand wheel 7 is provided with a special-shaped external thread plug 4, one end of the special-shaped external thread plug 4 sequentially penetrates through the gear motor 8 and the 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 4 is rotatably connected with the valve cover, and the gear motor 8 is used for driving the special-shaped external thread plug 4 to rotate.
The included angle between the special-shaped external thread plug 4 and the axis of the oil inlet of the main valve body 1 is 90 degrees.
Oil inlets of the electromagnetic pilot valve 11 and the mechanical pilot valve 12 are connected in series and then connected with an oil inlet of the main valve body 1 through a first stop valve 13, and oil outlets of the electromagnetic pilot valve 11 and the mechanical pilot valve 12 are connected to an oil outlet of the main valve body 1; a first oil port of the gear motor 8 is connected to one working port of the electromagnetic pilot valve 11 and one working port of the mechanical pilot valve 12 through a first pipeline, a second oil port of the gear motor 8 is connected to the other working port of the electromagnetic pilot valve 11 and the other working port of the mechanical pilot valve 12 through a second pipeline, and a second stop valve 14 is arranged between the first pipeline and the second pipeline;
a pressure sensor 9 is arranged at an oil inlet of the main valve body 1, and a controller 10 acquires a pressure value of the pressure sensor 9 and controls the electromagnetic pilot valve 11 to change direction according to the pressure value.
As a preferred embodiment of the present invention: the gear motor 8 includes a housing 85 and a first gear 81 and a second gear 82 provided in the housing 85; the first gear 81 is meshed with the second gear 82, the first gear 81 is located on the outer side of the second gear 82, the oil inlet 83 and the oil outlet 84 are both arranged on the housing 85, the oil inlet 83 and the oil outlet 84 are symmetrically arranged relative to the axis of the gear motor 8, and the oil inlet 83 and the oil outlet 84 are respectively located on two sides of a connecting line of the center of the first gear 81 and the center of the second gear 82.
As a preferred embodiment of the present invention: an internal spline is arranged on the first gear 81, an external spline is arranged on the special-shaped external thread plug 4, and the second end of the special-shaped external thread plug 4 penetrates through the internal spline and then is connected with the hand wheel 7.
As a preferred embodiment of the invention: the valve gap includes end cover 6 and a support section of thick bamboo 2, and the both ends of a support section of thick bamboo 2 are all seted up threadedly, and the one end of a support section of thick bamboo 2 is passed through the internal thread and is connected with special-shaped external screw thread end cap 4, and the other end passes through the external screw thread and is connected with end cover 6.
As a preferred embodiment of the present invention: a first sealing ring 5 is arranged between the outer wall of the special-shaped external thread plug 4 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 3 is arranged at the meshing position of the supporting cylinder 2 and the internal threads of the main valve body 1.
As a preferred embodiment of the present invention: the hand wheel 7 is connected with the special-shaped external thread plug 4 through a nut, and a gasket is arranged between the nut and the hand wheel 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.
In general, the first stop valve 13 is open and the second stop valve 14 is closed; the same oil pressure threshold value is set for both the mechanical pilot valve 12 and the electromagnetic pilot valve 11. When the oil pressure at the inlet of the main valve body 1 is low and does not reach the set oil pressure threshold, the electromagnetic pilot valve 11 and the mechanical pilot valve 12 both work at the left position.
When water hammer occurs in the main oil path, when the pressure detected by the pressure sensor 9 is greater than the oil pressure threshold value, the controller 10 drives the electromagnetic pilot valve 11 to change from the left position to the right position, meanwhile, the mechanical pilot valve 12 changes from the left position to the right position under the action of high-pressure oil pressure, high-pressure oil enters the electromagnetic pilot valve 11 from the inlet of the main valve body 1 through the first stop valve 13, enters the oil outlet 84 of the gear motor 8 after passing through the oil inlet 83 of the gear motor 8, and returns to the outlet oil path of the main valve body 1 through the oil outlet of the electromagnetic pilot valve 11 and the mechanical pilot valve 12 after passing through the oil inlet 83 of the gear motor 8, thereby completing pressure relief. When hydraulic oil passes through the gear motor 8, the first gear 81 is pushed to rotate anticlockwise, so that the special-shaped external thread plug 4 moves upwards in the support cylinder 2, the inlet and the outlet of the main valve body 1 are communicated, and the oil flows from the inlet to the outlet, so that the oil pressure in a pipeline is reduced.
The electromagnetic pilot valve 11 and the mechanical pilot valve 12 are of redundant design, and when one of the two fails, the other can ensure that the pressure relief valve operates normally.
When the electromagnetic pilot valve 11 and the mechanical pilot valve 12 are disabled, the first stop valve 13 can be manually closed and the second stop valve 14 can be opened, the special-shaped external thread plug 4 is enabled to move upwards in the support cylinder 2 by rotating the hand wheel 7, the inlet and the outlet of the main valve body 1 are communicated, high-pressure oil flows from the inlet to the outlet, and therefore oil pressure in a pipeline is reduced.
When the pressure relief is completed, the pressure of the oil path is smaller than the oil pressure threshold value, the mechanical pilot valve 12 is in the left position, meanwhile, the controller 12 receives a signal of the pressure sensor 11 to make the electromagnetic pilot valve 11 in the left position, the oil enters the electromagnetic pilot valve 11 and the mechanical pilot valve 12 from the inlet of the main valve body 1 through the first cut-off valve 13, flows out from the electromagnetic pilot valve 11 and the mechanical pilot valve 12, enters the oil inlet 83 of the gear motor 8, flows out through the oil outlet 84 of the gear motor 8, and flows back to the outlet of the main valve body 1 through the electromagnetic pilot valve 11 and the mechanical pilot valve 12. When hydraulic oil passes through the gear motor 8, the first gear 81 is pushed to rotate clockwise, so that the special-shaped external thread plug 4 moves downwards in the supporting cylinder 2, a valve in the main valve body 1 is closed, and oil is prevented from flowing out.
If the gear motor 8 fails after pressure relief is completed and the valve cannot be closed, the second stop valve 14 can be opened, and the hand wheel 7 is rotated clockwise, so that the special-shaped external thread plug 4 rotates clockwise and descends, the valve is closed, and pressure relief is stopped.
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 flow transformations made by using the contents of the specification and the drawings, or applied directly or indirectly to other related systems, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a many redundant electromagnetism guide's axial compressor safety type water hammer relief valve that gear motor directly driven which characterized in that: comprises a hand wheel (7), a gear motor (8), a valve cover, an electromagnetic pilot valve (11), a controller (10), a mechanical pilot valve (12) and a main valve body (1);
the bottom of the hand wheel (7) is provided with a special-shaped external thread plug (4), and one end of the special-shaped external thread plug (4) sequentially penetrates through the valve cover and the gear motor (8) from bottom to top and then is fastened with the hand wheel (7); the other end of the special-shaped external thread plug (4) extends into the main valve body (1) and is in sealing fit with the main valve body (1), the special-shaped external thread plug (4) is rotatably connected with the valve cover, and the gear motor (8) is used for driving the special-shaped external thread plug (4) to rotate;
the included angle between the special-shaped external thread plug (4) and the axis of the oil inlet of the main valve body (1) is 90 degrees;
oil inlets of the electromagnetic pilot valve (11) and the mechanical pilot valve (12) are connected in series and then are connected with an oil inlet of the main valve body (1) through a first stop valve (13), and oil outlets of the electromagnetic pilot valve (11) and the mechanical pilot valve (12) are connected to an oil outlet of the main valve body (1); an oil inlet (83) of the gear motor (8) is connected to one working port of the electromagnetic pilot valve (11) and one working port of the mechanical pilot valve (12) through a first pipeline, an oil outlet (84) of the gear motor (8) is connected to the other working port of the electromagnetic pilot valve (11) and the other working port of the mechanical pilot valve (12) through a second pipeline, and a second stop valve (14) is arranged between the first pipeline and the second pipeline;
a pressure sensor (9) is arranged at an oil inlet of the main valve body (1), and the controller (10) acquires a pressure value of the pressure sensor (9) and controls the electromagnetic pilot valve (11) to change direction according to the pressure value.
2. The gear motor direct-driven multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve according to claim 1, is characterized in that: the gear motor (8) comprises a housing (85) and a first gear (81) and a second gear (82) arranged within the housing (85); the first gear (81) is meshed with the second gear (82), the first gear (81) is located on the outer side of the second gear (82), the oil inlet (83) and the oil outlet (84) are both arranged on the shell (85), the oil inlet (83) and the oil outlet (84) are symmetrically arranged relative to the axis of the gear motor (8), and the oil inlet (83) and the oil outlet (84) are respectively located on two sides of a connecting line of the center of the first gear (81) and the center of the second gear (82).
3. The gear motor direct-driven multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve according to claim 2, characterized in that: an inner spline is arranged on the first gear (81), an outer spline is arranged on the special-shaped external thread plug (4), and the second end of the special-shaped external thread plug (4) penetrates through the inner spline and then is connected with the hand wheel (7).
4. The gear motor direct-driven multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve according to claim 3, characterized in that: 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 (4) 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 gear motor direct-driven multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve according to claim 4, characterized in that: a first sealing ring (5) is arranged between the outer wall of the special-shaped external thread plug (4) 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 (3) is installed at the meshing position of the supporting cylinder (2) and the internal threads of the main valve body (1).
6. The gear motor direct-driven multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve according to claim 5, characterized in that: the hand wheel (7) is connected with the special-shaped external thread plug (4) through a nut, and a gasket is arranged between the nut and the hand wheel (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174148.7A CN112943992B (en) | 2021-02-09 | 2021-02-09 | Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110174148.7A CN112943992B (en) | 2021-02-09 | 2021-02-09 | Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112943992A CN112943992A (en) | 2021-06-11 |
| CN112943992B true CN112943992B (en) | 2022-12-27 |
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| CN202110174148.7A Active CN112943992B (en) | 2021-02-09 | 2021-02-09 | Multi-redundancy electromagnetic pilot axial flow safety type water hammer relief valve directly driven by gear motor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA312483A (en) * | 1931-06-23 | L. Gilbert William | Water hammer relief valve | |
| GB974716A (en) * | 1962-09-24 | 1964-11-11 | Gen Controls Co | Hydraulic control system |
| US6415815B1 (en) * | 2000-10-31 | 2002-07-09 | Brian David Francis Blann | Pressure relief valve |
| CN101852202A (en) * | 2010-06-07 | 2010-10-06 | 开维喜阀门集团有限公司 | Double-aperture adjustable slow-closure control valve for water pump |
| CN101943284A (en) * | 2010-09-30 | 2011-01-12 | 北京航天动力研究所 | Surge protection relief valve |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN203421240U (en) * | 2013-07-18 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Y type pilot-operated type water-attack pressure release valve system |
| CN105257889A (en) * | 2015-07-17 | 2016-01-20 | 湖南山源安自控***有限公司 | Electro-hydraulic driving system for sluice valve and sluice valve |
-
2021
- 2021-02-09 CN CN202110174148.7A patent/CN112943992B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA312483A (en) * | 1931-06-23 | L. Gilbert William | Water hammer relief valve | |
| GB974716A (en) * | 1962-09-24 | 1964-11-11 | Gen Controls Co | Hydraulic control system |
| US6415815B1 (en) * | 2000-10-31 | 2002-07-09 | Brian David Francis Blann | Pressure relief valve |
| CN101852202A (en) * | 2010-06-07 | 2010-10-06 | 开维喜阀门集团有限公司 | Double-aperture adjustable slow-closure control valve for water pump |
| CN101943284A (en) * | 2010-09-30 | 2011-01-12 | 北京航天动力研究所 | Surge protection relief valve |
| CN202392208U (en) * | 2011-12-28 | 2012-08-22 | 西安航天动力研究所 | Pilot-operated type water attack relief valve system |
| CN203421240U (en) * | 2013-07-18 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | Y type pilot-operated type water-attack pressure release valve system |
| CN105257889A (en) * | 2015-07-17 | 2016-01-20 | 湖南山源安自控***有限公司 | Electro-hydraulic driving system for sluice valve and sluice valve |
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| CN112943992A (en) | 2021-06-11 |
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