Film type decompression starting sound-light alarm patch

Abstract

The invention discloses a film type pressure reduction starting sound-light alarm paster, which comprises a paster body, a first extension sheet body and a second extension sheet body, the first extension sheet body and the second extension sheet body respectively extend towards two opposite directions from any position on the paster body, and the first extension sheet body extends towards the direction of the center of a blind plate. The patch is attached to the temporary blind plate, and can remind a worker to timely dismount the temporary blind plate after a pipeline tightness test is finished, so that the temporary blind plate is prevented from being left at a pipeline butt joint, the normal use of a subsequent pipeline is influenced, and a quality accident is caused.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shipbuilding, in particular to a film type pressure relief starting sound and light alarm patch. BACKGROUND

[0002] At present, before the ship sectional pipe carries out the tightness test, the temporary blind plate needs to be installed between the flanges of two opposite pipes to isolate the pipe and ensure the tightness pressure, and prevent the tightness pressure from leaking through the flange; after the tightness test is finished, the temporary blind plate must be removed from the pipe.

[0003] But in the actual construction, due to the complex working condition of the pipe system, the construction personnel often forget to remove the temporary blind plate, which leads to the temporary blind plate left in the pipe, so that the temporary blind plate will blind the pipe, which will block the medium in the pipe, affect the normal use of the pipe, and further cause quality accidents, for example, the cooling water pipe of the ship main engine, or the deck reverse top area pipe, or the narrow space environment, if the pipe is blind, it will directly lead to the overheating or shutdown or damage of the ship equipment. SUMMARY

[0004] Therefore, the present application provides a film type pressure relief starting sound and light alarm patch to solve the problems in the background art.

[0005] A film type pressure relief starting sound and light alarm patch, comprising a patch body, a first extension piece and a second extension piece extending in two opposite directions from any position on the patch body, wherein the first extension piece extends towards the center of the blind plate;

[0006] The inside of the patch body is packaged with an electrolyte solution, and the electrolyte solution can enter the buffer cavity under the extrusion force generated when the pipe flange is tightened;

[0007] The first extension piece is an inner hollow structure, and a buffer cavity is formed at one end close to the patch body and a reaction cavity is formed at the other end inside the first extension piece, a self-reaction power device is arranged in the reaction cavity, and an alarm device is arranged in the second extension piece, and the alarm device is connected with the self-reaction power device through wires;

[0008] The first extension piece is further provided with a pressure relief sensing assembly, which is used to stage the buffer cavity and the reaction cavity according to the test progress of the ship pipe tightness test, so that the electrolyte solution flows into the reaction cavity from the buffer cavity after the tightness test is finished.

[0009] Preferably, the patch body is a double-layer structure, comprising a patch shell, a patch inner shell nested in the patch shell, a first electrolytic component arranged in the space between the patch shell and the patch inner shell, and a second electrolytic component arranged in the internal space of the patch inner shell, the patch inner shell is broken under the extrusion force generated when the pipeline flange is tightened, the second electrolytic component (1.5) is mixed with the first electrolytic component to form an electrolyte solution.

[0010] Preferably, the connection between the patch body and the buffer cavity of the first extension piece is further provided with an isolation film.

[0011] Preferably, the patch body is circular or arc-shaped.

[0012] Preferably, the decompression sensing assembly comprises a decompression air bag arranged on the outside of the first extension piece and an isolation air bag arranged in the buffer cavity and sharing a bag wall with the decompression air bag, the isolation air bag is in an inflation sealing position to separate the buffer cavity and the reaction cavity in the initial state and during the pipeline tightness test, and the isolation air bag is in a contraction opening position to connect the buffer cavity and the reaction cavity after the pipeline tightness test is completed.

[0013] Preferably, the self-reaction electric energy device comprises two upper and lower distance-keeping plates fixed on the cavity of the reaction cavity, an electrolytic shell arranged between the two upper and lower distance-keeping plates, an electrolytic assembly arranged in the electrolytic shell, two ends of the electrolytic assembly respectively extending out of the two upper and lower distance-keeping plates and connected with the alarm device through wires, and a plurality of flow-through holes are arranged on the electrolytic shell to make the electrolyte solution flow into the electrolytic shell.

[0014] Preferably, the electrolytic assembly comprises a first metal substrate and a second metal substrate,

[0015] The first metal substrate is fixed on the inner side of the upper distance-keeping plate, and the end of the first metal substrate extends out of the reaction cavity and is connected with the wire; the second metal substrate is fixed on the inner side of the lower distance-keeping plate, and the end of the second metal substrate also extends out of the reaction cavity and is connected with the wire.

[0016] Preferably, the electrolytic assembly further comprises a metal foil, one end of the metal foil is directly physically connected with the first metal substrate, and the other end of the metal foil is directly physically connected with the second metal substrate, the material of the metal foil is different from that of the first metal substrate and the second metal substrate, and the metal foil is the most active.

[0017] Preferably, the center of the metal foil is further provided with an adjusting hole penetrating through the foil body, and the adjusting hole is used to adjust and control the delay start time of the alarm device.

[0018] Preferably, the alarm device comprises an audible and visual alarm.

[0019] The beneficial effects of the present application are:

[0020] 1. The thin film pressure reducing start-up sound-light alarm patch is designed, the patch is attached to the temporary blind plate, the staff can be reminded to remove the temporary blind plate in time after the pipeline tightness test is finished, the temporary blind plate is avoided to be left in the pipeline butt joint, the normal use of the subsequent pipeline is avoided to be affected, and a quality accident is avoided.

[0021] 2. The alarm mechanism is arranged in the patch, the extrusion force during the fastening of the pipeline flange is used to spontaneously generate chemical reaction and generate current to power the alarm device to start the alarm after a specific time, the effect of alarming after the pipeline tightness test is finished is realized, an external power supply is not needed, the application is convenient and wide, the patch shell of the blind plate patch is made of plastic material, has the moisture-proof performance, is suitable for the open salt fog environment of ship enterprises, marine engineering and the like, and is high in reliability.

[0022] 3. The patch body is internally provided with two independent spaces for accommodating two different electrolytic components, the extrusion force of the pipeline flange is used to make the two electrolytic components be integrated to form an electrolyte solution and make the electrolyte solution enter the self-reaction electric energy device to spontaneously generate chemical reaction, a metal foil is additionally arranged between the anode and the cathode of the self-reaction electric energy device, the metal foil is directly physically connected with the anode and the cathode, the function of starting the alarm after a period of time after the pipeline tightness test is finished is realized, the effect of alarming after the pipeline tightness test is finished is realized, the blind plate patch is simple in structure and ingenious in design, and the fastening force of the pipeline flange is ingeniously used to make the self-reaction electric energy device generate current to power the alarm device.

[0023] 4. When the pipeline flange is fastened, only the patch body is extruded, the first extension piece body and the second extension piece body are located outside the pipeline and are not extruded, the self-reaction electric energy device and the alarm device are not damaged due to extrusion, and the safety is high.

[0024] 5. The application can be used in the working condition environment of difficult construction of the marine main and auxiliary machine cooling water pipeline, or the deck reverse top area pipeline, or a narrow space, has a wide application range, is stronger in applicability, can also be used in the pipeline temporary closure of the pipeline tightness test before the trial voyage, and does not cause damage to the marine equipment.

[0025] 6、The application sets the pressure reduction sensing component on the first extension sheet, which can temporarily block the buffer cavity and the reaction cavity inside the first extension sheet by using the pressure of the fluid inside the pipeline during the pipeline tightness test, and only after the end of the tightness test, the electrolyte solution in the buffer cavity reacts in the reaction cavity, so that the first level delay of the alarm device can be realized, and the self-reaction electric energy device can realize the second level delay of the alarm device, and by setting the pressure reduction sensing component or the self-reaction electric energy device with delay on the thin film pressure reduction starting sound and light alarm patch, the working personnel can be reminded to remove the temporary blind plate in time when the tightness test is finished or a period of time after the tightness test is finished.

[0026] 7、The buffer cavity of the application not only can be used as the temporary accommodation space of the electrolyte solution during the pipeline tightness test, but also can make the two electrolyte components that are not fully mixed in the patch body fully mixed in the cavity, so as to ensure the uniformity of the electrolyte solution. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is the installation schematic diagram of the temporary blind plate to which the thin film pressure reduction starting sound and light alarm patch of the application is pasted.

[0029] Figure 2 is the top view structural schematic diagram of the thin film pressure reduction starting sound and light alarm patch of the application pasted on the temporary blind plate.

[0030] Figure 3 is the sectional view of the patch body.

[0031] Figure 4 is Figure 2 is the sectional view of A-A in FIG.

[0032] Figure 5 is Figure 2 is the schematic diagram of C in FIG.

[0033] Figure 6 is the change process schematic diagram of the pressure reduction sensing component of the thin film pressure reduction starting sound and light alarm patch from the expansion sealing state to the contraction open state.

[0034] Figure 7 is the structural schematic diagram of the self-reaction electric energy device.

[0035] Figure 8 is the side view of the self-reaction electric energy device.

[0036] Figure 9 is a schematic diagram of the reaction process of the self-reaction electric energy device.

[0037] Figure 10 is a schematic diagram of the structure of the electrolysis assembly in the self-reaction electric energy device.

[0038] Figure 11 is a schematic diagram of the change process of the thin film pressure-reducing starting sound-light alarm patch of the present application from the blind plate flange installation to the pipeline tightness test.

[0039] The meaning of the reference signs in the figure is:

[0040] 1 is the patch body, 1.1 is the isolation film, 1.2 is the patch shell, 1.3 is the patch inner shell, 1.4 is the first electrolysis component, 1.5 is the second electrolysis component, and 1.6 is the electrolyte solution

[0041] 2 is the first extension piece body,

[0042] 3 is the second extension piece body,

[0043] 4 is the buffer cavity,

[0044] 5 is the reaction cavity,

[0045] 6 is the self-reaction electric energy device, 6.1 is the distance-keeping plate, 6.2 is the electrolysis shell, 6.3 is the first metal base plate, 6.4 is the second metal base plate, 6.5 is the metal foil, 6.6 is the adjusting punching, and 6.7 is the flow-through hole,

[0046] 7 is the alarm device,

[0047] 8 is the wire,

[0048] 9 is the pressure-reducing air bag,

[0049] 10 is the isolation air bag,

[0050] 11 is the temporary blind plate,

[0051] 12 is the pipeline flange. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application more clear and obvious, the present application will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0053] The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the description of the disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0054] It should be understood that, although the terms first, second, etc. can be used herein to describe various information, but these information should not be limited to these terms, and cannot be understood as indicating or implying relative importance. These terms are only used to distinguish one type of information from another type of information. For example, without departing from the scope of the disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as meaning "when" or "in response to determining" as used herein.

[0055] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between two elements, it can be direct connection, or indirect connection through intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0057] In order to better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings.

[0058] Embodiment one, the present application gives a kind of thin film type pressure reducing start sound-light alarm patch, including patch body 1, first extension sheet body 2 and second extension sheet body 3, first extension sheet body 2 and second extension sheet body 3 respectively extend from any position on patch body 1 to two opposite directions, wherein, the first extension sheet body 2 extends towards the direction of the center of temporary blind plate 11, and the second extension sheet body 3 extends away from the center of temporary blind plate 11.

[0059] The thin film pressure relief starting acoustic-optical alarm patch of the application is fixed on the marine temporary blind plate 11, when the marine temporary blind plate 11 is installed between two flanges 12 of two pipelines, the patch reacts under the extrusion force of the fastened flange and the pressure of the pipeline tightness test, and alarms after a certain time to remind the removal of the marine temporary blind plate, the length of the certain time is greater than the total time of the installation of the marine temporary blind plate and the pipeline tightness test.

[0060] The shape of the marine temporary blind plate 11 can be a common disc-shaped blind plate, and the shape of the marine temporary blind plate can also be a new type of blind plate with a handle added to the common disc-shaped blind plate, and the marine temporary blind plate used in the embodiment is a new type of blind plate with a handle.

[0061] The patch body 1, the first extension piece 2 and the second extension piece 3 are all internally hollow structures, and the electrolyte solution is independently packaged in the inside of the patch body 1 and can break through the packaging medium into the buffer cavity 4 under the extrusion force generated when the pipeline flange 12 is tightened, and the buffer cavity 4 is an independent cavity isolated at one end of the first extension piece 2 close to the patch body 1. The other end of the first extension piece 2 forms a reaction cavity 5, and a self-reaction electric energy device 6 is arranged in the reaction cavity 5, and an alarm device 7 is arranged in the second extension piece 3.

[0062] The buffer cavity 4 and the reaction cavity 5 in the first extension piece 2 are not always connected, and are phaseically separated by a pressure relief sensing assembly. In the three stages of "the temporary blind plate is not installed between two pipelines", "the temporary blind plate is installed between two pipelines and the flange is tightened", and "the pipeline tightness test (including the pipeline tightness test and the pressure maintaining test, the pipeline tightness test takes T1, and the pressure maintaining test takes T2)", the buffer cavity 4 and the reaction cavity 5 are isolated by the pressure relief sensing assembly, and the two cavities are not communicated; when the pipeline tightness test is completed, the pressure relief sensing assembly "fails", and the buffer cavity 4 and the reaction cavity 5 are connected.

[0063] When the buffer cavity 4 and the reaction cavity 5 are connected, the electrolyte solution in the buffer cavity 4 enters the reaction cavity 5, the self-reaction electric energy device 6 spontaneously reacts with the electrolyte solution to generate an electric current to power the alarm device 7, the alarm device 7 starts to alarm, and the effect of delayed alarm is achieved to remind the staff to remove the temporary blind plate in time after the pipeline tightness test is completed, so as to avoid the temporary blind plate left in the pipeline.

[0064] Specifically, the patch body 1 is a double-layer structure, including a patch outer shell 1.2 and a patch inner shell 1.3 nested in the patch outer shell 1.2, the patch outer shell 1.2 is provided with a communication hole in communication with the buffer cavity 4, and the gap space between the patch outer shell 1.2 and the patch inner shell 1.3 is in communication with the buffer cavity 4 through the communication hole. The patch outer shell 1.2 and the patch inner shell 1.3 are not in contact, and there is a certain gap space between them, and the space is filled with a first electrolytic component 1.4, and the internal space of the patch inner shell 1.3 is filled with a second electrolytic component 1.5, the patch inner shell 1.3 is a layer of plastic film, and the patch outer shell 1.2 is made of transparent plastic. Under the extrusion force generated when the pipeline flange 12 is tightened, the patch inner shell 1.3 will be broken, and then the second electrolytic component 1.5 and the first electrolytic component 1.4 are mixed to form an electrolyte solution 1.7, and the electrolyte solution enters the buffer cavity 4 through the communication hole on the patch outer shell 1.2. In this embodiment, the patch inner shell 1.3 is a plastic film, the first electrolytic component 1.4 uses a diluent (such as distilled water), and the second electrolytic component 1.5 uses an acidic electrolyte stock solution (such as sulfuric acid).

[0065] After all the first electrolytic component 1.4 and the second electrolytic component 1.5 in the patch body 1 are completely mixed and uniform, the total liquid volume of the generated electrolyte solution is 1.5-2 times the volume of the buffer cavity.

[0066] In this embodiment, the patch outer shell 1.2 is made of transparent plastic, and the overall thickness of the patch body 1 needs to be controlled to be 1-3 mm.

[0067] The patch body 1 can be designed as a circular ring structure and its size is consistent with the size of the flange sealing gasket. The patch body 1 can also be designed as a circular arc-shaped double-layer structure. In this embodiment, the patch body 1 is a circular arc-shaped double-layer structure.

[0068] Preferably, the connection between the patch outer shell 1.2 and the buffer cavity 4 is also provided with a separation film 1.1, that is, the connection between the patch outer shell 1.2 and the buffer cavity 4 is provided with a separation film 1.1, which can isolate the buffer cavity 4 from the internal space of the patch outer shell 1.2. The electrolyte solution generated under the action of the extrusion force will break the separation film 1.1, and then enter the buffer cavity 4 to react with the self-reaction electric energy device 3. The separation film 1.1 is preferably designed as a double-layer plastic film. Through the double-separation insurance measures composed of the patch inner shell 1.3 and the separation film 1.1, damage during transportation or handling can be effectively prevented, thereby affecting normal use.

[0069] The decompression sensing assembly comprises a decompression air bag 9 arranged outside the first extension sheet 2 and an isolation air bag 10 arranged inside the buffer cavity 4 and sharing a bag wall with the decompression air bag 9 (a part of the bag wall of the isolation air bag 10 can be integrally formed with the bag wall of the decompression air bag 9 by hot pressing). That is, the first extension sheet 2 is a sheet with a stepped thickness, the internal cavity of the thicker part of the sheet is the buffer cavity 4, the internal cavity of the thinner part of the sheet is the reaction cavity 5, and the outer surface of the thinner part of the sheet is provided with the isolation air bag 10, the end of the isolation air bag 10 shares a bag wall with the decompression air bag 9 arranged in the buffer cavity 4, the thickness of the material at the shared bag wall is much smaller than the thickness of the material at other positions of the first extension sheet 2, and the thickness of the material of the decompression air bag 9 is the same as the thickness of the shared bag wall.

[0070] The interiors of the decompression air bag 9 and the isolation air bag 10 are filled with air. In the two stages of "temporary blind plate not installed between the two butt-jointed pipelines" and "temporary blind plate installed between the two butt-jointed pipelines and flange tightening process", the isolation air bag 10 is in an inflated sealing position to separate the buffer cavity 4 and the reaction cavity 5, so as to prevent the electrolyte solution in the buffer cavity 4 from entering the reaction cavity 5.

[0071] During the pipeline tightness test (including two test stages of pipeline tightness test and pressure maintaining test), since compressed air needs to be introduced into the pipeline for the tightness test, the internal pressure of the pipeline increases, under the action of the tightness pressure, the air in the decompression air bag 9 breaks the shared bag wall and part of the air enters the isolation air bag 10, the isolation air bag 10 continues to be in the inflated sealing position to separate the buffer cavity 4 and the reaction cavity 5, and continues to prevent the electrolyte solution in the buffer cavity 4 from entering the reaction cavity 5, as the tightness pressure gradually increases, the decompression air bag 9 is squeezed and broken, and the bag membrane of the decompression air bag 9 adheres to the surface of the first extension sheet 2 under the action of the tightness pressure, so as to prevent the air in the decompression air bag from leaking.

[0072] After the pipeline tightness test is completed, the tightness pressure in the pipeline disappears, under the action of the external pressure release and the flow pressure of the electrolyte solution in the buffer cavity 4, the isolation air bag 10 shrinks and becomes smaller, the buffer cavity 4 and the reaction cavity 5 are connected, the electrolyte solution in the buffer cavity 4 enters the reaction cavity 5, and the self-reaction electric energy device 6 in the reaction cavity 5 spontaneously performs a chemical reaction with the electrolyte solution to generate an electric current to supply power to the alarm device 7.

[0073] The self-reaction electric energy device 6 comprises two upper and lower distance-keeping plates 6.1, an electrolysis shell 6.2 arranged between the two upper and lower distance-keeping plates 6.1, an electrolysis assembly arranged in the electrolysis shell 6.2, two ends of the electrolysis assembly respectively extending out of the two upper and lower distance-keeping plates 6.1 and connected to the alarm device 7 arranged outside through wires, and a plurality of flow-through holes 6.7 provided on the electrolysis shell 6.2 and used for allowing the electrolyte solution to flow into the interior of the electrolysis shell 6.2.

[0074] The electrolytic assembly comprises a first metal substrate 6.3 and a second metal substrate 6.4. The first metal substrate 6.3 is fixed inside the distance-keeping plate on the upper side, and the end of the first metal substrate 6.3 extends out of the distance-keeping plate and is connected to the wire 5. The second metal substrate 6.4 is fixed inside the distance-keeping plate on the lower side, and the end of the second metal substrate 6.4 extends out of the distance-keeping plate and is also connected to the wire 5.

[0075] The electrolytic assembly described above can be integrally injection molded, and after being manufactured, it is assembled with the distance-keeping plate 6.1 and the electrolytic shell 6.2 into the self-reaction electric energy device 6, and then is packaged in the first extension sheet body 2. Alternatively, the self-reaction electric energy device can also be integrally injection molded and then packaged in the first extension sheet body 2.

[0076] The patch body 1 and the first extension sheet body 2 can be integrally injection molded, and then are assembled with the second extension sheet body 3.

[0077] The patch body 1, the first extension sheet body 2 and the second extension sheet body 3 can also be integrally injection molded as a whole,

[0078] The alarm device 7 is arranged in the second extension sheet body 3. The alarm device 7 is an audible and light alarm.

[0079] The temporary blind plate and the thin-film pressure-reducing starting audible and light alarm patch of the present application can be made separately or together, that is, the temporary blind plate can be directly made with the thin-film pressure-reducing starting audible and light alarm patch, or the temporary blind plate and the thin-film pressure-reducing starting audible and light alarm patch of the present application can be made separately, and then the thin-film pressure-reducing starting audible and light alarm patch is fixed on the temporary blind plate by pasting or other means. If the thin-film pressure-reducing starting audible and light alarm patch is fixed on the temporary blind plate by pasting, double-sided adhesive tape (containing an anti-sticking film) can be pasted on the blind patch. The double-sided adhesive tape can be pasted on the patch in advance when the thin-film pressure-reducing starting audible and light alarm patch is manufactured (that is, the double-sided adhesive tape is pasted on the patch when the thin-film pressure-reducing starting audible and light alarm patch is produced), or the double-sided adhesive tape can be pasted on the thin-film pressure-reducing starting audible and light alarm patch on site during actual use.

[0080] When the ship sectional pipe needs to be tested for tightness, the thin-film pressure-reducing starting audible and light alarm patch is pasted on the temporary blind plate for the ship. The patch body 1 of the thin-film pressure-reducing starting audible and light alarm patch needs to be pasted on the temporary blind plate and correspond to the position of the pipe gasket, the second extension sheet body 2 is pasted on the center of the temporary blind plate, and the third extension sheet body 3 is suspended outside the temporary blind plate.

[0081] Then, the temporary blind plate with the film type pressure reduction starting sound and light alarm patch is installed between the two opposite flanges 12, or a temporary blind plate with a film type pressure reduction starting sound and light alarm patch is directly installed between the two opposite flanges 12.

[0082] Then, the flange bolts are tightened, and in the process of tightening the flange bolts, the second electrolytic component 1.5 in the patch body 1 is crushed, breaks through the patch inner shell 1.3, and mixes with the first electrolytic component 1.4 to form an electrolyte solution. With the continuous crushing, the electrolyte solution will break through the isolation film 1.6 into the buffer cavity 4, but at this time, due to the blocking of the pressure reduction sensing assembly, the electrolyte solution will not enter the reaction cavity 5.

[0083] During the pipeline tightness test (including two test stages of pipeline tightness test and pressure maintenance test), the electrolyte solution continues to be contained in the buffer cavity 4.

[0084] When the pipeline tightness test is completed, the tightness pressure in the pipeline disappears, and under the action of external pressure release and the flow pressure of the electrolyte solution in the buffer cavity 4, the blocking effect of the pressure reduction sensing assembly "fails", the electrolyte solution in the buffer cavity 4 flows into the reaction cavity 5, the electrolyte solution flows into the two metal substrates from the flow hole 6.7 of the self-reaction electric energy device 6 to generate an electric current through oxidation-reduction reaction, and the alarm device 6 starts sound and light alarm.

[0085] In this embodiment, after the pipeline tightness test is completed, the alarm device starts to alarm.

[0086] In embodiment two, the film type pressure reduction starting sound and light alarm patch in this embodiment is basically the same as that in embodiment one, and the specific difference is that,

[0087] The self-reaction electric energy device 6 includes two upper and lower distance maintaining plates 6.1, an electrolysis shell 6.2 arranged between the two upper and lower distance maintaining plates 6.1, an electrolytic assembly arranged in the electrolysis shell 6.2, two ends of the electrolytic assembly respectively extending out of the two upper and lower distance maintaining plates 6.1 and connected to the alarm device 7 arranged outside through wires, and a plurality of flow holes 6.7 provided on the electrolysis shell 6.2 to allow the electrolyte solution to flow into the electrolysis shell 6.2.

[0088] The electrolysis assembly comprises a first metal substrate 6.3, a second metal substrate 6.4 and a metal foil 3.5. The first metal substrate 6.3 is fixed inside the upper isolator, and the end of the first metal substrate 6.3 extends out of the isolator and is connected to the wire 5. The second metal substrate 6.4 is fixed inside the lower isolator, and the end of the second metal substrate 6.4 extends out of the isolator and is also connected to the wire 5. The metal foil 6.5 is vertically arranged, and one end of the metal foil 6.5 is directly physically connected to the first metal substrate 6.3, and the other end of the metal foil 6.5 is directly physically connected to the second metal substrate 6.4. The material of the metal foil 6.5 is different from that of the first metal substrate 6.3 and the second metal substrate 6.4, and the metal foil 6.5 is the most active. The thickness of the metal foil 6.5 is much smaller than that of the first metal substrate 6.3 and the second metal substrate 6.4.

[0089] Assuming that the first metal substrate 6.3 is the anode and the second metal substrate 6.4 is the cathode, the metal attribute of the metal foil 6.5 is more active than that of the first metal substrate 6.3, and the metal attribute of the first metal substrate 6.3 is more active than that of the second metal substrate 6.4 (for example, the first metal substrate is a zinc plate, the second metal substrate is a copper plate, and the metal foil is magnesium). When the electrolyte solution flows into the electrolysis shell 6.2 from the flow-through hole 6.7, the metal foil 6.5 first undergoes an oxidation reaction. Since the metal foil 6.5 is in direct physical contact with the first metal substrate 6.3 and the second metal substrate 6.4, an internal short circuit path is formed between the first metal substrate 6.3 and the second metal substrate 6.4. The electrons that should originally pass through the external circuit will directly flow from the first metal substrate 6.3 to the second metal substrate 6.4 through the metal foil 6.5. Therefore, the actual output voltage of the self-reaction electric energy device 6 is close to 0, the alarm device 7 does not start, and no alarm is given. When the metal foil 6.5 is completely consumed, the first metal substrate 6.3 becomes the anode again and continues to provide electrons to the external circuit, while the second metal substrate 6.4 continues to be the cathode and accepts these electrons to undergo a reduction reaction. The actual output voltage of the self-reaction electric energy device 6 becomes a value determined by the standard electrode potential difference between the first metal substrate 6.3 and the second metal substrate 6.4, and the alarm device 7 starts to alarm.

[0090] Therefore, the self-reaction electric energy device 6 will undergo two stages of chemical reactions. The first stage of chemical reaction is the consumption of the metal foil 6.5, and the consumption time is not less than the total operation time of the marine temporary blind plate installation and pipeline tightness test. The second stage of chemical reaction is the consumption of the first metal substrate 6.3.

[0091] By controlling the consumption time of the metal foil 6.5, the delay start time of the alarm device 7 can be controlled. For example, an adjustment punch hole 6.6 can be formed in the center of the metal foil 6.5 to accelerate the consumption speed of the metal foil 6.5, thereby reducing the delay start time of the alarm device 7.

[0092] Further, the delay start time of the alarm device 7 can be further adjusted by adjusting the aperture of the adjusting punch 6.6. Of course, other ways can also be used to control the delay start time of the alarm device 7.

[0093] When the ship sectional pipe needs to be tested for tightness, a thin film pressure-reducing start sound and light alarm patch is attached to the temporary blind plate of the ship, the patch body 1 of the thin film pressure-reducing start sound and light alarm patch needs to be attached to the temporary blind plate and corresponds to the position of the pipe sealing gasket, the second extension sheet body 2 is attached to the center of the temporary blind plate, and the third extension sheet body 3 is suspended outside the temporary blind plate.

[0094] Then, the temporary blind plate with the thin film pressure-reducing start sound and light alarm patch is installed between the two pipe flanges 12 that are connected to each other; or a temporary blind plate with a thin film pressure-reducing start sound and light alarm patch is directly installed between the two pipe flanges 12 that are connected to each other.

[0095] Then, the flange bolts are tightened, and in the process of tightening the flange bolts, the second electrolytic component 1.5 in the patch body 1 is broken by the extrusion of the pipe flange 12, mixes with the first electrolytic component 1.4 to form an electrolyte solution, and the electrolyte solution will break through the isolation film 1.6 into the buffer cavity 4 as the extrusion continues, but at this time, the electrolyte solution cannot enter the reaction cavity 5 due to the blocking of the pressure-reducing sensing assembly.

[0096] During the pipe tightness test (including two test stages of pipe tightness test and pressure maintenance test), the electrolyte solution continues to be contained in the buffer cavity 4.

[0097] When the pipe tightness test is completed, the internal tightness pressure of the pipe disappears, and under the action of external pressure release and the flow pressure of the electrolyte solution in the buffer cavity 4, the blocking effect of the pressure-reducing sensing assembly is “invalidated”, the electrolyte solution in the buffer cavity 4 flows into the reaction cavity 5, the electrolyte solution flows into the self-reaction electric energy device 6 from the through hole 6.7 of the self-reaction electric energy device 6, and the alarm device 7 does not start in the first stage of chemical reaction of the metal foil 6.5 as the anode. When the metal foil 6.5 is consumed, the alarm device 7 starts to sound and light alarm in the second stage of chemical reaction of the first metal substrate 6.3 as the anode.

[0098] Therefore, in this embodiment, the alarm device 7 will start to sound and light alarm after a period of time after the completion of the pipe tightness test, for example, the alarm device 7 starts to alarm 12 hours, or 24 hours, or 36 hours after the completion of the pipe tightness test, and the length of the time interval between the alarm time of the alarm device 7 and the completion time of the pipe tightness test depends on the consumption time of the metal foil 6.5. The consumption speed of the metal foil 6.5 can be increased by increasing the aperture of the adjusting punch 6.6, so as to shorten the delay start time of the alarm device 7.

[0099] Other embodiments are identical to Embodiment One, and are not described in detail here.

[0100] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor, fall within the scope of protection of the present application.

Claims

1. A thin film decompression activated sound and light alarm patch, characterized in that: The patch comprises a patch body (1), a first extension piece (2) and a second extension piece (3) extending from any position on the patch body (1) in two opposite directions, wherein the first extension piece (2) extends toward the center of the blind plate; The patch body (1) is encapsulated with an electrolyte solution, and the electrolyte solution can enter the buffer cavity (4) under the extrusion force generated when the pipeline flange 12 is tightened; The first extension piece (2) is a hollow structure, and a buffer cavity (4) is formed at one end thereof close to the patch body (1), and a reaction cavity (5) is formed at the other end thereof. A self-reaction electric energy device (6) is provided in the reaction cavity (5). An alarm device (7) is provided in the second extension piece (3), and the alarm device (7) is connected to the self-reaction electric energy device (6) via a wire (8). The first extension piece (2) is also provided with a decompression sensing component, which is used to perform phased isolation of the buffer chamber (4) and the reaction chamber (5) according to the test progress of the ship pipeline tightness test so that the electrolyte solution can flow from the buffer chamber (4) into the reaction chamber (5) after the tightness test is completed.

2. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: The patch body (1) has a double-layer structure, comprising a patch outer shell (1.2), a patch inner shell (1.3) nested in the patch outer shell (1.2), a first electrolytic component (1.4) arranged in the space between the patch outer shell (1.2) and the patch inner shell (1.3), and a second electrolytic component (1.5) arranged in the internal space of the patch inner shell (1.3); the patch inner shell (1.3) ruptures under the action of the squeezing force generated when the pipeline flange 12 is tightened, so that the second electrolytic component (1.5) and the first electrolytic component (1.4) are mixed to form an electrolyte solution.

3. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: An isolation membrane (1.1) is also provided at the connection between the patch body (1) and the buffer cavity (4) of the first extension piece (2).

4. The thin film type decompression activated sound and light alarm patch according to claim 1, 2 or 3, characterized in that: The patch body (1) is in the shape of a ring or an arc.

5. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: The decompression sensing component comprises a decompression airbag (9) and an isolation airbag (10), wherein the decompression airbag (9) is arranged on the outside of the first extension sheet (2), and the isolation airbag (10) is arranged inside the buffer chamber (4) and shares a bag wall with the decompression airbag (9). In the initial state and during the pipeline tightness test, the isolation airbag (10) is in an expanded sealing position to separate the buffer chamber (4) and the reaction chamber (5). After the pipeline tightness test is completed, the isolation airbag (10) is in a contracted open position to connect the buffer chamber (4) and the reaction chamber (5).

6. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: The self-reaction electric energy device (6) comprises two upper and lower opposing distance plates (6.1) fixed on the reaction chamber (5), an electrolytic shell (6.2) arranged between the upper and lower distance plates (6.1), an electrolytic assembly arranged in the electrolytic shell (6.2), two ends of the electrolytic assembly respectively extending out of the upper and lower distance plates (6.1) and connected to the alarm device (7) via wires, and a plurality of flow holes (6.7) for allowing an electrolyte solution to flow into the electrolytic shell (6.2).

7. The thin film type pressure reduction activated sound and light alarm patch according to claim 1, characterized in that: The electrolytic assembly comprises a first metal substrate (6.3) and a second metal substrate (6.4), The first metal substrate (6.3) is fixed on the inner side of the distance-keeping plate located above, and the end of the first metal substrate (6.3) extends out of the reaction chamber (5) and is connected to the wire (8). The second metal substrate (6.4) is fixed on the inner side of the distance-keeping plate located below, and the end of the second metal substrate (6.4) extends out of the reaction chamber (5) and is also connected to the wire (8).

8. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: The electrolytic assembly further comprises a metal foil (6.5), one end of the metal foil (6.5) being directly physically connected to the first metal substrate (6.3) and the other end being directly physically connected to the second metal substrate (6.4). The material of the metal foil (6.5) is different from that of the first metal substrate (6.3) and the second metal substrate (6.4) and is the most active.

9. The thin film type pressure reduction activated sound and light alarm patch according to claim 8, characterized in that: The center of the metal foil (6.5) is also provided with an adjustment punching hole (6.6) penetrating the foil body, and the adjustment punching hole (6.6) is used to adjust the delayed start time of the control alarm device (7).

10. The thin film type pressure relief activated sound and light alarm patch according to claim 1, characterized in that: The alarm device (7) comprises an audible and visual alarm.

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