CN111677927A - Overpressure relief device with controllable opening mode - Google Patents
Overpressure relief device with controllable opening mode Download PDFInfo
- Publication number
- CN111677927A CN111677927A CN202010546949.7A CN202010546949A CN111677927A CN 111677927 A CN111677927 A CN 111677927A CN 202010546949 A CN202010546949 A CN 202010546949A CN 111677927 A CN111677927 A CN 111677927A
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- China
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- pressure
- relief
- cover
- relief cover
- mounting seat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
- F16K17/406—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint the fracturing member being a generally elongated member, e.g. rod or wire, which is directly connected to a movable valve member, the breaking or buckling of the elongated member allowing the valve member to move to a closed or open position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K37/0025—Electrical or magnetic means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides an overpressure relief device with controllable opening modes, which is provided with an overpressure relief device with automatic, manual and remote control opening modes. The device provided by the invention can realize an overpressure automatic release function, namely, when the pressure in the fuel storage rises to reach a set threshold value, the cover can be automatically opened to discharge high-pressure gas to the safety channel; and meanwhile, the device also has the functions of manual and remote control opening, namely, the device can be manually and remotely opened no matter whether the pressure in the warehouse reaches a set threshold value, so that toxic and harmful gas in the warehouse can be released to a safety channel outside the warehouse. The device has the characteristics of reliable locking, quick opening, controllable opening mode, simple structure and convenience in maintenance.
Description
Technical Field
The invention relates to an overpressure release device with automatic, manual and remote control opening modes, and belongs to the field of fuel depot security.
Background
The fuel storage is usually stored with a large amount of liquid compressed gas (flammable liquid hydrogen, combustion-supporting liquid oxygen, etc.), and all stored in a seamless steel cylinder in a liquid state and high pressure mode, so the fuel storage belongs to flammable and explosive high-risk places. A fire alarm system, a pressure detection and video monitoring system and the like are usually arranged in the fuel storage, and the fuel storage is in an unattended state at ordinary times. The gas in the seamless steel cylinder stored in the fuel reservoir can be quickly released due to accidents, even combustion and explosion are caused, so that the temperature in the fuel reservoir rises, and a fire-fighting system is automatically triggered to alarm and extinguish fire. However, the rapid release, combustion or explosion of the gas can also cause the rapid accumulation of combustible gas, smoke and the like in the storehouse to further cause the pressure in the storehouse to rise, and if the gas cannot be effectively discharged, the deformation of the whole storehouse can even cause chain explosion and toxic gas spread, thereby threatening the safety of operators and equipment of adjacent storage storehouses.
Therefore, when the pressure in the fuel tank rises to a set threshold value or a large amount of toxic and harmful gas is accumulated, effective measures must be taken to discharge the high-pressure and harmful gas in the fuel tank so as to ensure the storage safety of the fuel tank.
Disclosure of Invention
The purpose of the invention is: the problems of high pressure and harmful gas discharge of the fuel storage are solved.
In order to achieve the above object, the present invention provides an overpressure relief device with controllable opening mode, which is installed at a pressure relief vent of a side wall of a fuel tank, and has an automatic mode, a manual mode and a remote opening mode, and is characterized by comprising:
the fixing ring is arranged on the side wall of the fuel reservoir;
the mounting seat is arranged on the fixing ring;
the pressure relief cover is arranged in the mounting seat, and the pressure relief cover and the mounting seat are fixedly connected through a connecting piece;
the pressure adding part can be controlled manually or remotely and is used for applying pressure-adjustable high-pressure gas to the pressure relief cover;
when the overpressure relief device works in an automatic mode, pressure in the fuel tank acting on the relief cover forms shearing force acting on the connecting piece, when the shearing force exceeds a stress threshold value of the connecting piece, the connecting piece is cut off, the relief cover is pushed out of the fuel tank, high-pressure air in the fuel tank is released to the exhaust channel through the relief cover, and the pressure in the fuel tank is reduced to standard atmospheric pressure; when the overpressure relief device works in a manual mode, the pressurization part is manually controlled to apply high-pressure gas to the relief cover, the high-pressure gas acting on the relief cover forms shearing force acting on the connecting piece, the connecting piece is cut off when the shearing force exceeds a stress threshold of the connecting piece, the relief cover is pushed out of the fuel reservoir, and high-pressure air in the fuel reservoir is released to the exhaust channel through the relief cover, so that the pressure in the fuel reservoir is reduced to standard atmospheric pressure; when the overpressure relief device works in a remote control opening mode, the pressure applying part is controlled to apply high-pressure gas to the pressure relief cover in a remote control mode, the high-pressure gas acting on the pressure relief cover forms shearing force acting on the connecting piece, the connecting piece is cut off when the shearing force exceeds a stress threshold value of the connecting piece, the pressure relief cover is pushed out of the fuel reservoir, and high-pressure air in the fuel reservoir is released to the exhaust channel through the pressure relief cover, so that the pressure in the fuel reservoir is reduced to standard atmospheric pressure.
Preferably, the fixing ring, the pressure relief vent hole, the mounting seat and the discharge cover are coaxially arranged.
Preferably, the mounting seat is fastened on the fixing ring through a fastening bolt, and a sealing gasket which plays roles in dust prevention, sealing and buffering and shock absorption is arranged between the mounting seat and the matching surface of the fixing ring.
Preferably, the inner wall of the mounting seat is of a stepped annular structure, and the inner wall of the mounting seat forms clearance type precise fit with the outer cylindrical surface of the discharge cover through the stepped annular structure.
Preferably, the inner wall of the mounting seat is coated with anti-rust grease and is provided with at least one clamping groove, a guide sealing ring is arranged in each clamping groove, and dust and impurities are prevented from entering the matching surface of the mounting seat and the discharge cover through the guide sealing ring to cause pollution; and the cylindrical surface on the outer side of the discharge cover is coated with antirust grease.
Preferably, the relief cover is provided with a locking ring fixing seat, two locking rings are respectively arranged on the locking ring fixing seat and the side wall of the fuel depot, a safety rope is connected between the two locking rings, and the distance for pushing out the relief cover is limited by the safety rope.
Preferably, the locking ring fixing seat is located at a central position of the discharge cover.
Preferably, a sensor is further arranged on the mounting seat, the sensor detects the opening state of the discharge cover in real time, and the detected state information is uploaded to an upper-level monitoring system.
Preferably, the pressurizing part comprises a high-pressure air source conveying unit which can be opened and closed manually and can be opened and closed remotely, the high-pressure air source conveying unit is communicated with an air inlet hole formed in the mounting seat, and high-pressure air with adjustable pressure released by the high-pressure air source conveying unit passes through the air inlet hole and then acts on the outer cylindrical surface of the discharge cover.
Preferably, the discharge cover comprises a discharge cover body, the surface of the heat-insulating filling material is brushed and plated with hot coating slurry and then is arranged in the discharge cover body, and then the heat-insulating filling material is cooled, solidified and bonded into a whole, and a coating slurry layer is formed on the surface of the heat-insulating filling material.
The invention provides an overpressure relief device with automatic, manual and remote control opening modes. The device provided by the invention can realize an overpressure automatic release function, namely, when the pressure in the fuel storage rises to reach a set threshold value, the cover can be automatically opened to discharge high-pressure gas to the safety channel; and meanwhile, the device also has the functions of manual and remote control opening, namely, the device can be manually and remotely opened no matter whether the pressure in the warehouse reaches a set threshold value, so that toxic and harmful gas in the warehouse can be released to a safety channel outside the warehouse. The device has the characteristics of reliable locking, quick opening, controllable opening mode, simple structure and convenience in maintenance.
The invention has the beneficial effects that: the overpressure relief device is characterized in that the exhaust hole is formed in the mounting seat, the annular end face is arranged on the relief cover, the guide sealing ring and the positioning pin are arranged at the matching surface of the mounting seat and the relief cover, the electromagnetic valve and the manual opening device which are remotely controlled are arranged at the air source, a sensor is additionally arranged on the mounting seat, automatic opening is realized by pressure rising caused by gas accumulation in the reservoir, remote control and manual opening under normal pressure are realized by an external high-pressure air source, and potential threats to personnel and equipment in the fuel reservoir and adjacent reservoirs due to pressure rising in the reservoir and accumulation of dense smoke or toxic gas are effectively solved. The overpressure relief device has the advantages of being reliable in locking, quick in opening, selectable in opening mode, simple in structure, convenient to maintain and the like.
Drawings
FIG. 1 is a diagram illustrating an operation state of the overpressure relief device installed on a side wall of a fuel tank according to the present invention;
FIG. 2 is an enlarged view of a portion of the inflation inlet of the overpressure relief device in accordance with the present invention;
FIG. 3 is an enlarged fragmentary view II of the mating surfaces of the vent cover and the mounting base of the over-pressure relief device in accordance with the present invention;
fig. 4 is a cross-sectional view of a vent cover of the over-pressure relief device in accordance with the present invention.
Wherein: 1-a fuel reservoir side wall; 2-fixing the ring; 3-a venting cover; 4-mounting a base; 5-fastening a bolt I; 6-safety rope; 7-locking ring; 8-a sensor; 9-air inlet holes; 10-a venting cover annular end face; 11-a seal gasket; 12-guiding a sealing ring I; 13-a guide sealing ring II; 14-a locating pin; 15-a stop plate; 16-fastening bolt II; 17-a sensor fixing plate; 18-the vent cover body; 19-coating a pulp layer; 20-insulating filler material; 21-operating a handle; 22-locking ring fixing base; 23-operating handle fixing seat.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The invention relates to an overpressure relief device with a controllable opening mode, which comprises a fixed ring 2, wherein the fixed ring is continuously welded on a fuel reservoir side wall 1 along an inner ring and an outer ring. The side wall 1 of the fuel reservoir is formed by welding a metal steel plate and a reinforcing rib plate, a pressure relief vent hole is formed along the side wall, the fixing ring 2 and the pressure relief vent hole are arranged in a concentric position, and the fixing ring and the pressure relief vent hole are continuously welded on the side wall along the circumferential two sides of the pressure relief vent hole. The mounting seat 4 is of an annular thin-wall shell type structure, is fastened on the fixing ring 2 through a fastening bolt I5, and is additionally provided with a sealing gasket 11 on a matching surface to play roles of dust prevention, sealing, buffering and shock absorption. The inner wall of the mounting seat 4 is of a stepped annular structure, and forms clearance type precise fit with the outer side cylindrical surface of the discharge cover 3, and the mounting seat is used for placing the discharge cover 3.
The discharge cover 3 is of a stepped annular structure, and sequentially comprises a discharge cover body 18, a slurry coating layer 19, a heat insulation filling material 20 and the like along the radial direction from the direction of a fuel reservoir to the direction of an exhaust passage, the surface of the heat insulation filling material 20 is coated with the slurry coating layer 19 and then is arranged in the discharge cover body 18, and then the heat insulation filling material is cooled, solidified and bonded into a whole, so that the discharge cover has the weight reduction effect and the heat insulation function. The central position of the discharging cover 3 is provided with a locking ring fixing seat 22, and an operating handle fixing seat 23 is arranged at one side of the fuel storage. The body 18 of the vent cover is formed by machining, and the outer side column is in a step-shaped annular structure and forms precise clearance fit with the inner wall of the step-shaped annular structure of the mounting seat 4. For guarantee to release the lid body 18 and the mounting seat 4 fitting surface clean and overpressure release when releasing the lid 3 reliable, smoothly release, in order to guarantee to release to keep good accurate cooperation relation for a long time between lid 3 and mounting seat 4, except scribbling rust-resistant grease in the fitting surface, still respectively open on the two cascaded inside walls of mounting seat 4 has a draw-in groove, be used for placing direction sealing ring I12 and direction sealing ring II 13 respectively, can effectively prevent dust impurity to get into the fitting surface and cause the pollution.
During assembly, the stop plate 15 and the sensor fixing plate 17 are pressed and fixed on the end face of one side, close to the fuel tank, of the mounting seat 4 through the fastening bolt II 16, then the discharge cover 3 slides into the mounting seat 4, the stop plate 15 plays a role in axial positioning, and the discharge cover 3 is rotated and finely adjusted to a proper position through the operating handle 21. The side wall of the matching surface of the mounting seat 4 and the discharge cover 3 is uniformly provided with a plurality of small holes along the circumferential direction for mounting positioning pins 14, the positioning pins 14 are inserted, the discharge cover 3 and the mounting seat 4 are assembled into a whole, and the relative position of the two is kept fixed. The sensor 8 is arranged on the sensor fixing plate 17, the locking ring 7 is screwed in the locking ring fixing seat 22 at the center of the discharge cover 3, the mounting seat 4 and the like which are assembled are pressed and fixed on the fixing ring 2 through the fastening bolt I5, and the sealing gasket 11 is additionally arranged between the sensor fixing plate and the mounting seat to play roles of dust prevention, sealing, buffering and shock absorption. Finally, two locking rings 7 fixed on the pressure relief cover 3 and the side wall 1 of the fuel storage are connected by a safety rope 6.
The working principle of the invention is as follows: through setting up locating pin 14 on the fitting surface lateral wall of mount pad 4 and lid 3 of releasing, set up annular terminal surface 10 on lid 3 of releasing, set up inlet port 9 at mount pad 4 lateral wall near lid annular terminal surface 10 position department of releasing, guarantee through calculation and experiment that the pressure rises to setting for the threshold value within range in the fuel storehouse simultaneously, locating pin 14 can be reliably cut off and push away lid 3 of releasing and install the seat 4. Meanwhile, the thrust formed by the high-pressure gas acting on the annular end face 10 of the discharge cover is more than or equal to 2 times of the cutting force of the positioning pin 14 by adjusting the pressure of the high-pressure gas and the area of the annular end face, so that the discharge cover 3 can be reliably opened by remote control and manual operation. The sensor 8 arranged on the mounting seat 4 can effectively detect the opening state of the discharge cover 3 in real time and upload the state to an upper-level monitoring system. Antirust lubricating grease is smeared between the matching surfaces of the discharging cover 3 and the mounting seat 4, and a guide sealing ring I13 and a guide sealing ring II 14 are arranged, so that the cleaning of the matching surfaces and the reliable and smooth pushing of the discharging cover 3 out of the mounting seat 4 when overpressure is discharged are effectively guaranteed, and high-pressure gas, toxic gas or dense smoke is discharged to a safety channel. Two locking rings 7 are respectively arranged on the pressure relief cover 3 and the side wall 1 of the fuel depot, and are connected by a safety rope 6, so that the pressure relief cover 3 can be tensioned by the safety rope 6 after being pushed out to a safety channel, and the flying distance and the flying position of the pressure relief cover are relatively controllable.
Under normal conditions, the pressure inside and outside the warehouse are equal and are both standard atmospheric pressure. The overpressure relief device provided by the invention can be opened in an automatic, manual and remote control mode according to specific conditions:
1. automatic start-up: when accidental leakage, combustion or even explosion happens in the fuel reservoir, the pressure in the fuel reservoir can be gradually increased, the force acting on the pressure release cover 3 is increased, and when the pressure reaches a set pressure threshold range, the force acting on the pressure release cover 3 can cut off the positioning pin 14 to push the pressure release cover 3 out of the fuel reservoir, so that high-pressure air is released to the exhaust channel, and the pressure in the fuel reservoir is reduced to the standard atmospheric pressure.
2. Remote control starts: when a combustible gas detector, a video monitoring device and a pressure sensor which are arranged in the fuel storage monitor that combustible gas leakage, dense smoke and other accidents happen in the fuel storage, a remote control starting button can be pressed down from a monitoring room, an electromagnetic valve of an external high-pressure gas source is remotely opened, high-pressure air acts on the annular end face of the pressure relief cover 3 from an air inlet hole of the mounting seat 4, the pressure relief cover 3 is pushed out of the fuel storage, and therefore dangerous gases such as dense smoke and the like are released to a safety channel.
3. Manual opening: the air supply not only has the long-range mode of opening of solenoid valve, has still set up manual opening device simultaneously, under unexpected circumstances such as outage or circuit fault, when the remote control starts the inefficacy, but emergency operation manual opening device releases external high-pressure gas and will release lid 3 and open promptly.
Through the multiple measures, the overpressure release device can be opened quickly and reliably, harmful gas can be released to the safety channel in time, and the storage safety of the fuel depot is ensured.
Claims (10)
1. An overpressure relief device with controllable opening mode, which is installed at the position of a pressure relief vent hole on the side wall of a fuel reservoir and has an automatic mode, a manual mode and a remote control opening mode, and is characterized by comprising:
the fixing ring is arranged on the side wall of the fuel reservoir;
the mounting seat is arranged on the fixing ring;
the pressure relief cover is arranged in the mounting seat, and the pressure relief cover and the mounting seat are fixedly connected through a connecting piece;
the pressure adding part can be controlled manually or remotely and is used for applying pressure-adjustable high-pressure gas to the pressure relief cover;
when the overpressure relief device works in an automatic mode, pressure in the fuel tank acting on the relief cover forms shearing force acting on the connecting piece, when the shearing force exceeds a stress threshold value of the connecting piece, the connecting piece is cut off, the relief cover is pushed out of the fuel tank, high-pressure air in the fuel tank is released to the exhaust channel through the relief cover, and the pressure in the fuel tank is reduced to standard atmospheric pressure; when the overpressure relief device works in a manual mode, the pressurization part is manually controlled to apply high-pressure gas to the relief cover, the high-pressure gas acting on the relief cover forms shearing force acting on the connecting piece, the connecting piece is cut off when the shearing force exceeds a stress threshold of the connecting piece, the relief cover is pushed out of the fuel reservoir, and high-pressure air in the fuel reservoir is released to the exhaust channel through the relief cover, so that the pressure in the fuel reservoir is reduced to standard atmospheric pressure; when the overpressure relief device works in a remote control opening mode, the pressure applying part is controlled to apply high-pressure gas to the pressure relief cover in a remote control mode, the high-pressure gas acting on the pressure relief cover forms shearing force acting on the connecting piece, the connecting piece is cut off when the shearing force exceeds a stress threshold value of the connecting piece, the pressure relief cover is pushed out of the fuel reservoir, and high-pressure air in the fuel reservoir is released to the exhaust channel through the pressure relief cover, so that the pressure in the fuel reservoir is reduced to standard atmospheric pressure.
2. An open mode controllable over-pressure relief device according to claim 1, wherein said retaining ring, said pressure relief vent, said mounting seat and said relief cover are coaxially disposed.
3. An open-mode controllable over-pressure relief device according to claim 1, wherein said mounting block is fastened to said retaining ring by means of fastening bolts, and a sealing gasket for dust-proof, sealing and shock-absorbing is provided between mating surfaces of said mounting block and said retaining ring.
4. An open mode controllable over-pressure relief device according to claim 1, wherein said mounting seat inner wall is a stepped annular configuration through which said mounting seat inner wall forms a clearance-type close fit with said relief cover outer cylindrical surface.
5. The overpressure relief device with controllable opening mode of claim 4, wherein the inner wall of said mounting seat is coated with rust-proof grease and is provided with at least one slot, each slot is provided with a guiding sealing ring, and dust and impurities are prevented from entering the matching surface of said mounting seat and said relief cover to cause pollution by the guiding sealing ring; and the cylindrical surface on the outer side of the discharge cover is coated with antirust grease.
6. The opening mode controllable overpressure relief device of claim 1, wherein the relief cover is provided with a locking ring fixing seat, two locking rings are respectively provided on the locking ring fixing seat and the side wall of the fuel depot, a safety rope is connected between the two locking rings, and the distance that the relief cover is pushed out is limited by the safety rope.
7. An open mode controlled over-pressure relief device according to claim 6, wherein said locking ring retainer is centrally located on said relief cap.
8. The opening-mode-controllable over-pressure relief device according to claim 1, wherein the mounting seat is further provided with a sensor, the sensor detects the opening state of the relief cover in real time, and uploads the detected state information to an upper monitoring system.
9. The overpressure relief device with the controllable opening mode as claimed in claim 1, wherein said pressurizing portion includes a high pressure gas source delivery unit capable of being opened and closed manually and being opened and closed remotely, the high pressure gas source delivery unit is communicated with an air inlet hole provided on said mounting seat, and the high pressure gas with the adjustable pressure released by the high pressure gas source delivery unit passes through the air inlet hole and then acts on the outer cylindrical surface of said relief cover.
10. The opening mode controllable overpressure relief device of claim 1, wherein said relief cover includes a relief cover body, and after the thermal insulation filler material surface is coated with hot slurry, the thermal insulation filler material surface is placed in the relief cover body, and then cooled, solidified and bonded into a whole, and a slurry coating layer is formed on the thermal insulation filler material surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010546949.7A CN111677927B (en) | 2020-06-16 | 2020-06-16 | Overpressure relief device with controllable opening mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010546949.7A CN111677927B (en) | 2020-06-16 | 2020-06-16 | Overpressure relief device with controllable opening mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111677927A true CN111677927A (en) | 2020-09-18 |
| CN111677927B CN111677927B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010546949.7A Active CN111677927B (en) | 2020-06-16 | 2020-06-16 | Overpressure relief device with controllable opening mode |
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| CN (1) | CN111677927B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984657A (en) * | 1964-02-18 | 1965-03-03 | Kidde Walter Co Ltd | Immersion responsive control head |
| US20090255592A1 (en) * | 2008-02-07 | 2009-10-15 | Mohawk Energy Ltd. | Reverse Action Flow Activated Shut-Off Valve |
| US20110018172A1 (en) * | 2008-03-24 | 2011-01-27 | Husky Injection Molding Systems Ltd. | Safety connector for hot runner, having latch destructively interlocking valve stem with actuation plate |
| CN103574114A (en) * | 2013-10-29 | 2014-02-12 | 大连理工大学 | Active and passive bifunctional superpressure relief device and superpressure relief method |
| CN104180036A (en) * | 2014-08-14 | 2014-12-03 | 宝鸡市金心泵业制造有限责任公司 | Water injection pump safety valve for oil field |
| US20160148742A1 (en) * | 2013-07-16 | 2016-05-26 | Maschinenfabrik Reinhausen Gmbh | Burst protector for high-voltage device |
| CN107166068A (en) * | 2017-05-15 | 2017-09-15 | 永嘉县信诚科技服务有限公司 | Slurry safety valve |
| WO2018047072A1 (en) * | 2016-09-06 | 2018-03-15 | Flsmidth A/S | Pressure relief device for centrifugal pump |
| CN209725349U (en) * | 2019-01-02 | 2019-12-03 | 北京长吉加油设备有限公司 | A kind of Pull breaking ualve |
-
2020
- 2020-06-16 CN CN202010546949.7A patent/CN111677927B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB984657A (en) * | 1964-02-18 | 1965-03-03 | Kidde Walter Co Ltd | Immersion responsive control head |
| US20090255592A1 (en) * | 2008-02-07 | 2009-10-15 | Mohawk Energy Ltd. | Reverse Action Flow Activated Shut-Off Valve |
| US20110018172A1 (en) * | 2008-03-24 | 2011-01-27 | Husky Injection Molding Systems Ltd. | Safety connector for hot runner, having latch destructively interlocking valve stem with actuation plate |
| US20160148742A1 (en) * | 2013-07-16 | 2016-05-26 | Maschinenfabrik Reinhausen Gmbh | Burst protector for high-voltage device |
| CN103574114A (en) * | 2013-10-29 | 2014-02-12 | 大连理工大学 | Active and passive bifunctional superpressure relief device and superpressure relief method |
| CN104180036A (en) * | 2014-08-14 | 2014-12-03 | 宝鸡市金心泵业制造有限责任公司 | Water injection pump safety valve for oil field |
| WO2018047072A1 (en) * | 2016-09-06 | 2018-03-15 | Flsmidth A/S | Pressure relief device for centrifugal pump |
| CN107166068A (en) * | 2017-05-15 | 2017-09-15 | 永嘉县信诚科技服务有限公司 | Slurry safety valve |
| CN209725349U (en) * | 2019-01-02 | 2019-12-03 | 北京长吉加油设备有限公司 | A kind of Pull breaking ualve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111677927B (en) | 2022-03-18 |
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