CN110285278B - Sacrificial flange - Google Patents
Sacrificial flange Download PDFInfo
- Publication number
- CN110285278B CN110285278B CN201910265563.6A CN201910265563A CN110285278B CN 110285278 B CN110285278 B CN 110285278B CN 201910265563 A CN201910265563 A CN 201910265563A CN 110285278 B CN110285278 B CN 110285278B
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- Prior art keywords
- shell
- piston
- hole
- flange
- sacrificial
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/187—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for flanged joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a sacrificial flange, which comprises a flange body, a piston mechanism and a detection device, wherein the piston mechanism comprises a shell and a piston piece, one end of the shell is provided with a butt joint hole communicated with a failure hole, the other end of the shell is provided with an inner cavity used for accommodating the piston piece, the butt joint hole is communicated with the inner cavity, and the detection device is connected with the shell; the shell of the piston mechanism is arranged on the failure hole of the flange body, when the flange body does not fail, the failure hole is not communicated with high-pressure water in the pipeline, the piston mechanism is not under the action of the pressure of the water pressure and cannot generate displacement action, when the flange body fails, the high-pressure water in the pipeline enters the inner cavity of the shell through the failure hole, the piston piece is pushed by the water pressure to generate the displacement action, the detection device acquires the displacement action and converts the displacement action into an electronic signal, and the sacrificial flange is favorable for punctual maintenance and replacement.
Description
Technical Field
The invention relates to the technical field of ship accessories, in particular to a sacrificial flange.
Background
In the process of ship operation, most of heat generated by equipment is finally taken away by seawater through heat exchange, a seawater system is used as a main body of ship heat exchange and is operated all the time, but the seawater has strong corrosivity, so that a seawater pipeline and equipment connected with the pipeline become a serious disaster area for corrosion. In this case, the use of sacrificial anodes for the protection of the sea water system is the only way.
The sacrificial flange is a sacrificial anode device used for protecting equipment such as pipelines and pump bodies in occasions such as between pumps and pipelines of marine and freshwater systems and between steel pipes and copper pipes of ships. The principle is that the electric potential of the sacrificial flange is lower than that of the pump body and the copper pipe, so that the sacrificial flange is used as a sacrificial anode to protect the pump body and the copper pipe from being corroded. The conventional sacrificial flange is provided with a failure hole for checking the sacrificial condition of the sacrificial flange, when the service life of the sacrificial flange expires, the inner wall of the sacrificial flange is corroded to a state of being communicated with the failure hole, and seawater in a pipeline flows out through the failure hole to serve as a signal that the service life expires and needs to be replaced. The signal sending mode can be known only through inspection of a crew and cannot be accessed to an information alarm system. Therefore, the method is not beneficial to continuously and stably protecting protected equipment, is not beneficial to realizing automation of operation and maintenance of the system, and even can cause serious leakage of a pipeline because the sacrificial flange is excessively corroded and cannot be replaced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a sacrificial flange capable of monitoring a failure state.
In order to solve the technical problem, the invention provides a sacrificial flange, which comprises a flange body provided with a failure hole, a piston mechanism arranged on the failure hole and a detection device used for acquiring a displacement signal,
the piston mechanism comprises a shell and a piston piece, wherein one end of the shell is provided with a butt joint hole communicated with the failure hole, the other end of the shell is provided with an inner cavity used for containing the piston piece, the butt joint hole is communicated with the inner cavity, and the detection device is connected with the shell.
Preferably, a pressing cover is arranged at the opening end of the inner cavity.
Preferably, the piston member is provided with a piston rod, and the pressing cover is provided with a through hole through which the piston rod penetrates.
Preferably, the piston further comprises an elastic element, one end of the elastic element is abutted with the pressing cover, and the other end of the elastic element is abutted with the piston element.
Preferably, the pressing cover is in threaded connection with the inner wall of the shell.
Preferably, the piston member is provided with a first concave surface on a side surface close to the docking hole, the housing is provided with a second concave surface on an inner surface provided with the docking hole, and the first concave surface and the second concave surface are oppositely arranged to form a pressurizing chamber for containing liquid.
Preferably, the housing and the failure hole are in threaded connection.
Preferably, the flange further comprises a sealing ring, and the sealing ring is arranged between the shell and the flange body.
Preferably, the outer wall of the shell is provided with an external thread connected with the detection device.
Preferably, the detection means comprises a sensor.
Compared with the prior art, the sacrificial flange provided by the invention has the beneficial effects that: according to the invention, the shell of the piston mechanism is arranged on the failure hole of the flange body, when the flange body does not fail, the sacrificial inner wall of the piston mechanism is not corroded, the failure hole is not communicated with high-pressure water in the pipeline, the piston mechanism is not under the pressure action of water pressure, and displacement action cannot occur.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a sacrificial flange according to a preferred embodiment of the present invention in an unreliased state.
Fig. 2 is a schematic structural view of a failure state of a sacrificial flange according to a preferred embodiment of the present invention.
Fig. 3 is a schematic view of the structure in the direction of a in fig. 1.
In the figure: 1. a flange body; 2. a failure hole; 3. a housing; 4. a piston member; 5. a butt joint hole; 6. a compression cover; 7. a piston rod; 8. an elastic member; 9. air holes are formed; 10. a seal ring; 11. a pressurizing cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 3, a preferred embodiment of the present invention provides a sacrificial flange, which comprises a flange body 1 provided with a failure hole 2, a piston mechanism provided on the failure hole 2 and a detection device for acquiring a displacement signal,
the piston mechanism comprises a shell 3 and a piston piece 4, one end of the shell 3 is provided with a butt joint hole 5 communicated with the failure hole 2, the other end of the shell 3 is provided with an inner cavity used for containing the piston piece 4, the butt joint hole 5 is communicated with the inner cavity, and the detection device is connected with the shell 3.
Based on the sacrificial flange with the technical characteristics, the housing 3 of the piston mechanism is arranged on the failure hole 2 of the flange body 1, as shown in fig. 1, when the flange body 1 has not failed, the sacrificial inner wall of the flange body is not corroded (the sacrificial margin is L), the failure hole 2 is not communicated with high-pressure water in the pipeline, the piston mechanism is not under the pressure action of water pressure, and does not perform displacement action, as shown in fig. 2, when the flange body 1 fails, namely the sacrificial inner wall is corroded (the sacrificial margin L is 0), high-pressure water in the pipeline enters the inner cavity of the housing 3 through the failure hole 2, the piston member 4 performs displacement action under the push of the water pressure, and the detection device acquires the displacement action, converts the displacement action into an electronic signal, informs workers on a ship to replace the sacrificial flange, and is favorable for maintaining and replacing the sacrificial flange on time, and adverse effects caused by excessive corrosion of the sacrificial flange are prevented.
In this embodiment, the bottom end of the inner cavity is communicated with the butt-joint hole 5, and the open end of the inner cavity is provided with a pressing cover 6 to seal the open end of the inner cavity, so as to form a space for the piston member 4 to move. The pressing cover 6 is in threaded connection with the inner wall of the shell 3, installation is convenient, the position of the pressing cover 6 can be adjusted by rotating the pressing cover 6, wherein the outer wall of the pressing cover 6 is provided with external threads, and the inner wall of the shell 3 is provided with internal threads.
Furthermore, the piston piece 4 is provided with a piston rod 7, and the pressing cover 6 is provided with a through hole through which the piston rod 7 penetrates, so that on one hand, the displacement action of the piston piece 4 is indirectly judged by judging the displacement action of the piston rod 7, and the detection of the detection device is facilitated; on the other hand, the through hole may limit the moving direction of the piston rod 7, facilitating the water pressure to push the piston member 4.
Further, the piston mechanism further comprises an elastic element 8, one end of the elastic element 8 is abutted to the pressing cover 6, the other end of the elastic element 8 is abutted to the piston element 4, the piston element 4 is held at a normal position under the action of the elastic force of the elastic element 8, when the flange body 1 fails, the pressure of the water pressure is resisted with the elastic force of the spring element, the pressure is greater than the elastic force, the piston element 4 is pushed to move, and the elastic element 8 is a compression spring.
In this embodiment, the piston member 4 has a first concave surface on a side close to the docking hole 5, the housing 3 has a second concave surface on an inner surface of the docking hole 5, and the first concave surface and the second concave surface are oppositely disposed to form a pressurizing cavity 11 for containing liquid, and when the docking hole 5 is filled with liquid, the liquid flows into the pressurizing cavity 11, so that the contact area with the piston member 4 is larger, the initial thrust applied to the piston member 4 is increased, and the piston member 4 is more favorably pushed. In this embodiment, a breather hole 9 is further formed in one side of the housing 3, and is used for exhausting air in the inner cavity when liquid enters the inner cavity; it is also prevented that the inner chamber is closed during mounting, so that the piston element 4 cannot be pressed into the operating position by the spring element 8.
In this embodiment, the housing 3 and the failure hole 2 are in threaded connection, and the piston mechanism can be rapidly installed on the failure hole 2, wherein the outer wall of the housing 3 is provided with external threads, and the inner wall of the failure hole 2 is provided with internal threads.
In this embodiment, still include sealing washer 10, sealing washer 10 is located casing 3 with between the flange body 1 realizes waterproof function, avoids liquid to flow from casing 3 with the gap between the inefficacy hole 2 comes.
In this embodiment, the outer wall of casing 3 be equipped with the external screw thread that detection device is connected is convenient for install, detection device accessible detects the displacement action of piston rod 7 judges whether flange body 1 is inefficacy. The detection device comprises a sensor for acquiring a displacement distance, converts a mechanical action signal into an electric signal and is connected to a ship maintenance alarm system, the detection device can adopt a control system and a control method in the prior art to realize the function of converting the displacement signal into the electric signal, and other specific structures are not repeated herein.
The sacrificial flange provided by the embodiment of the invention comprises a flange body 1, a piston mechanism and a detection device, wherein the piston mechanism comprises a shell 3, a piston piece 4, a pressing cover 6, an elastic piece 8 and the like, the piston piece 4, the elastic piece 8 and the pressing cover 6 are sequentially installed in the shell 3, the pressing cover 6 is adjusted according to the application condition of a system, so that the elastic piece 8 is adjusted to keep proper elasticity, the piston piece 4 is ensured to be in a stable working position, then a sealing ring 10 is installed, the piston mechanism is integrally installed on a failure hole 2 in the flange body 1, and the installation of the device is completed.
The pressure of high-pressure water leakage is converted into the displacement of the piston part 4 by using the piston mechanism, the purpose of converting the failure phenomenon of the expired service life of the sacrificial flange into a failure signal of mechanical displacement is achieved, the mechanical displacement signal is converted into an electric signal by a sensor of a detection device arranged on the piston mechanism, and finally informatization of maintenance after the failure of the sacrificial flange is expired is achieved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A sacrificial flange is characterized by comprising a flange body provided with a failure hole, a piston mechanism arranged on the failure hole and a detection device used for acquiring a displacement signal,
the piston mechanism comprises a shell, a piston piece, a pressing cover and an elastic piece, wherein one end of the shell is provided with a butt joint hole communicated with the failure hole, the other end of the shell is provided with an inner cavity used for containing the piston piece, the butt joint hole is communicated with the inner cavity, the detection device is connected with the shell, the opening end of the inner cavity is provided with the pressing cover, one end of the elastic piece is abutted against the pressing cover, the other end of the elastic piece is abutted against the piston piece so that the piston piece is abutted against the inner surface of the shell provided with the butt joint hole, the side surface of the piston piece close to the butt joint hole is provided with a first concave surface, the inner surface of the shell provided with the butt joint hole is provided with a second concave surface, and the first concave surface and the second concave surface are oppositely arranged to form a pressurizing cavity used for containing liquid, the inner diameter of the pressurizing cavity is larger than that of the butt joint hole, the inner diameter of the pressurizing cavity is smaller than that of the inner cavity, and air holes for exhausting are formed in one side, provided with the butt joint hole, of the shell.
2. The sacrificial flange of claim 1, wherein said piston member is provided with a piston rod, and said hold-down cap is provided with a through-hole through which said piston rod extends.
3. The sacrificial flange of claim 1, wherein the hold-down cap is threadably coupled to an inner wall of the housing.
4. The sacrificial flange of claim 1, wherein the housing is threaded with the failure hole.
5. The sacrificial flange of claim 1, further comprising a sealing ring disposed between the housing and the flange body.
6. Sacrificial flange according to claim 1, wherein the outer wall of the housing is provided with an external thread for connection with the detection means.
7. Sacrificial flange according to any one of claims 1-6, wherein the detection means comprise a sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910265563.6A CN110285278B (en) | 2019-04-03 | 2019-04-03 | Sacrificial flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910265563.6A CN110285278B (en) | 2019-04-03 | 2019-04-03 | Sacrificial flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110285278A CN110285278A (en) | 2019-09-27 |
| CN110285278B true CN110285278B (en) | 2021-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910265563.6A Active CN110285278B (en) | 2019-04-03 | 2019-04-03 | Sacrificial flange |
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| Country | Link |
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| CN (1) | CN110285278B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201508307U (en) * | 2009-10-09 | 2010-06-16 | 江苏大学 | Monitoring device for continuously monitoring the oil liquid pollutional condition |
| CN105135104A (en) * | 2015-10-10 | 2015-12-09 | 上海外高桥造船海洋工程设计有限公司 | Sacrifice flange for sea water system |
| CN108548095A (en) * | 2018-04-19 | 2018-09-18 | 邢建 | A kind of oil exploitation oil field pipe leak detecting device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7159652B2 (en) * | 2003-09-04 | 2007-01-09 | Oil States Energy Services, Inc. | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use |
| US20130245703A1 (en) * | 2012-03-02 | 2013-09-19 | Interventional Spine, Inc. | Method and apparatus for sacroiliac joint fixation |
| CN103452948A (en) * | 2013-09-10 | 2013-12-18 | 湖南工业大学 | Multi-stage concave-convex circular table piston hydraulic device capable of increasing bearing force |
| CN207378507U (en) * | 2017-11-12 | 2018-05-18 | 王竟宇 | A kind of natural gas line conveys gas leak detection device |
-
2019
- 2019-04-03 CN CN201910265563.6A patent/CN110285278B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201508307U (en) * | 2009-10-09 | 2010-06-16 | 江苏大学 | Monitoring device for continuously monitoring the oil liquid pollutional condition |
| CN105135104A (en) * | 2015-10-10 | 2015-12-09 | 上海外高桥造船海洋工程设计有限公司 | Sacrifice flange for sea water system |
| CN108548095A (en) * | 2018-04-19 | 2018-09-18 | 邢建 | A kind of oil exploitation oil field pipe leak detecting device |
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| Publication number | Publication date |
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| CN110285278A (en) | 2019-09-27 |
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