Low-pressure cylinder outer cylinder rupture disk leakage detection device and low-pressure cylinder leakage detection device

Abstract

The utility model belongs to the technical field of blasting membranes, and particularly relates to a low-pressure cylinder outer cylinder blasting membrane leakage detection device and a low-pressure cylinder leakage detection device.The low-pressure cylinder outer cylinder blasting membrane leakage detection device comprises a barrel connected with a blasting membrane in a sealed mode, the barrel is provided with a containing cavity corresponding to the blasting face of the blasting membrane, and the barrel is provided with a pressing hole communicated with the containing cavity; according to the embodiment of the invention, the leakage state of the rupture disk can be judged according to the pressure state in the cylinder in a manner of being in sealed connection with the rupture disk and pressurizing the cylinder through the pressurizing hole, so that the leakage detection of the rupture disk is realized.

Description

Technical Field

[0001] This application belongs to the technical field of rupture discs, and particularly relates to a leakage detection device for the rupture disc of the low-pressure cylinder outer cylinder and a leakage detection device for the low-pressure cylinder. Background Art

[0002] A rupture disc is a safety device used to quickly release pressure through the rupture of a diaphragm when the pressure in a pressure vessel or system exceeds a predetermined value, preventing the container from exploding due to excessive pressure. The rupture disc of the low-pressure cylinder is installed on the low-pressure outer cylinder and serves as a vacuum sealing boundary. One side is connected to the low-pressure cylinder outer cylinder, and the other side is in contact with the atmosphere, used to rupture and connect to the atmosphere when the pressure in the outer cylinder is too high. The rupture disc usually adopts a three-layer structure. The functional component that truly plays the role of sealing and overpressure rupture is the polytetrafluoroethylene film layer sandwiched between two metal outer layers (one of which is the rupture disc diaphragm). When the film layer is damaged, the rupture disc leaks, and thus the normal sealing function cannot be achieved. Moreover, it will even affect the exhaust pressure of the low-pressure cylinder and the vacuum of the condenser, and the leaked air dissolved in the condensate will cause a high oxygen content. Whether the vacuum of the condenser deteriorates or the oxygen content in the condensate exceeds the limit value, it will cause the steam turbine unit to trip automatically or the unit to be forced to withdraw from the state for system leak detection, thus affecting the safe and stable operation of the main engine of the nuclear power plant.

[0003] Since the film layer is inside the metal layer, the prior art cannot detect the sealing performance of the rupture disc without damaging and disassembling the rupture disc. Summary of the Utility Model

[0004] In view of this, the embodiment of this application provides a leakage detection device for the rupture disc of the low-pressure cylinder outer cylinder. By sealingly connecting with the rupture disc and pressurizing the inside of the cylinder through a pressurizing hole, the leakage state of the rupture disc can be judged according to the pressure state inside the cylinder, thus solving the problem of leakage detection of the rupture disc without damaging and disassembling the rupture disc.

[0005] The first aspect of the embodiment of this application provides a leakage detection device for the rupture disc of the low-pressure cylinder outer cylinder, including a cylinder sealingly connected to the rupture disc. The cylinder is provided with a receiving cavity corresponding to the rupture surface of the rupture disc, and the cylinder is provided with a pressurizing hole communicating with the receiving cavity.

[0006] In one embodiment, it further includes a pressurizing device for pressurizing the receiving cavity through the pressurizing hole.

[0007] In one embodiment, it further includes a pressure output device for outputting the pressure inside the receiving cavity.

[0008] In one embodiment, the cylinder is provided with a support flange at the end, and the support flange is used to support the holder of the rupture disc.

[0009] In one embodiment, it further includes a retaining ring for pressing the gripper against the support flange.

[0010] In one embodiment, a sealing ring is provided between the gripper and the support flange.

[0011] In one embodiment, the surface of the support flange corresponding to the gripper is a first stepped surface, and the sealing ring and the gripper are arranged within the first stepped surface.

[0012] In one embodiment, a reinforcing inner rib plate is provided at the intersection of the inner wall and the bottom wall of the accommodating cavity, and a reinforcing outer rib plate is provided at the intersection of the outer wall of the cylinder body and the support flange.

[0013] In one embodiment, a handle is provided on the retaining ring.

[0014] The second aspect of the embodiments of the present application provides a low-pressure cylinder leak detection device, including the low-pressure cylinder outer cylinder bursting disc leak detection device provided in the first aspect of the embodiments of the present application.

[0015] The low-pressure cylinder outer cylinder bursting disc leak detection device provided in the first aspect of the embodiments of the present application is hermetically connected to the bursting disc, and by pressurizing the cylinder body through the pressure injection hole, the leakage state of the bursting disc can be judged according to the pressure state inside the cylinder, thereby realizing the leak detection of the bursting disc.

[0016] It can be understood that the beneficial effects of the above second aspect can be referred to the relevant descriptions in the above first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the usage state of a low-pressure cylinder outer cylinder bursting disc leak detection device provided by an embodiment of the present application;

[0019] Figure 2 is an enlarged schematic view of part A of a low-pressure cylinder outer cylinder bursting disc leak detection device provided by an embodiment of the present application;

[0020] Figure 3 is a three-dimensional structure schematic diagram of a low-pressure cylinder outer cylinder bursting disc leak detection device provided by an embodiment of the present application;

[0021] Figure 4 is the front view of a low-pressure cylinder outer cylinder bursting disc leak detection device provided by an embodiment of the present application;

[0022] Figure 5 It is the top view of a leakage detection device for the bursting diaphragm of the low-pressure cylinder outer cylinder provided by an embodiment of the present application;

[0023] Figure 6 It is the sectional view taken along the C-C direction of a leakage detection device for the bursting diaphragm of the low-pressure cylinder outer cylinder provided by an embodiment of the present application;

[0024] Figure 7 It is the schematic perspective view of the pressure ring provided by an embodiment of the present application;

[0025] Figure 8 It is the top view of the pressure ring provided by an embodiment of the present application;

[0026] Figure 9 It is the sectional view taken along the A-A direction of the pressure ring provided by an embodiment of the present application;

[0027] Figure 10 It is the enlarged schematic view of part B of the pressure ring provided by an embodiment of the present application.

[0028] Among them, each reference numeral in the figure:

[0029] 100 - Leakage detection device for the bursting diaphragm of the low-pressure cylinder outer cylinder, 101 - Cylinder body, 102 - Pressurizing hole, 103 - Support flange, 104 - Reinforcing inner rib plate, 105 - Reinforcing outer rib plate, 106 - First step surface, 107 - First bolt hole, 108 - Pressure ring, 109 - Handle, 110 - First bolt hole, 111 - Second step surface, 112 - Accommodation cavity;

[0030] 200 - Bursting diaphragm, 201 - Bursting surface, 202 - Clamp. Detailed implementation manners

[0031] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are put forward so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to impede the description of the present application with unnecessary details.

[0032] It should also be understood that the term "and / or" as used in the specification and claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0033] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] In addition, in the description of the specification and the appended claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0036] The reference to "one embodiment" or "some embodiments" etc. in the description of the present application specification means that a specific feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "A plurality" means two or more.

[0037] A leakage detection device for the outer cylinder bursting disc of a low-pressure cylinder provided by an embodiment of the present application is used to detect the leakage of a bursting disc provided with a polytetrafluoroethylene film layer. A bursting disc is a safety device that, when the pressure in a pressure vessel or system exceeds a predetermined value, rapidly releases the pressure through the rupture of the diaphragm to prevent the container from exploding due to excessive pressure. The bursting disc includes a positive-arch bursting disc and a reverse-arch bursting disc. Among them, the concave surface of the positive-arch bursting disc faces inward (i.e., faces the high-pressure side), while the convex surface of the reverse-arch bursting disc faces inward (i.e., faces the high-pressure side). The leakage detection device for the outer cylinder bursting disc of a low-pressure cylinder provided by this embodiment can be used to detect both the positive-arch bursting disc and the reverse-arch bursting disc.

[0038] Embodiment 1

[0039] Such as Figure 1 And 2As shown in the figure, a low-pressure cylinder outer cylinder bursting disc leak detection device provided by an embodiment of the present application includes a cylinder body 101 hermetically connected to a bursting disc 200. The cylinder body 101 is provided with a receiving cavity 112 corresponding to the bursting surface of the bursting disc 200, and the cylinder body 101 is provided with a pressure injection hole 102 communicating with the receiving cavity 112.

[0040] When performing leak detection on the bursting disc in this embodiment, whether it is a positive-arch bursting disc or a reverse-arch bursting disc, its bursting surface is fixed to the cylinder body 101 through the receiving cavity 112, so that a sealed space is formed between the thin film layer behind the bursting surface and the inside of the cylinder body. Therefore, by injecting pressure into the cylinder body and monitoring the pressure state, the leak detection of the bursting disc can be realized. Its structure is simple, avoiding any form of physical damage to the bursting disc, and ensuring that the bursting disc can still maintain its original safety function after detection. Through tight sealing and accurate pressure monitoring, any potential leak path can be quickly and accurately identified, improving the reliability and sensitivity of the detection. The entire detection process is designed simply, and the operator only needs to execute according to the established procedure without complex technical knowledge, reducing the training cost and operation difficulty. Whether it is a bursting disc of any shape or in different industrial application backgrounds, this method can be flexibly adapted, providing a general and effective solution for the safe operation and maintenance of pressure vessels.

[0041] In application, the hermetic connection between the cylinder body 101 and the bursting disc 200 means that no gas or liquid will leak from the end face where the two are connected.

[0042] In application, the characteristic of a positive-arch bursting disc is that its bursting surface 201 bulges outwards. This design enables the diaphragm to rupture quickly when the internal pressure exceeds a predetermined value, releasing excess pressure. During detection, the convex surface of the positive-arch bursting disc is placed inside the receiving cavity 112 to ensure that it faces the cavity. Such a layout simulates the working state of the bursting disc in actual application. The clamp 202 is fastened to the outer circumference of the bursting disc. Through the tight connection with the cylinder body 101, it not only fixes the position of the bursting disc but also ensures that a sealed space is formed between the back of the bursting surface and the inside of the cylinder body. Once pressure is injected into the receiving cavity, the tightness and response ability of the bursting disc can be tested by monitoring the pressure change without causing any substantial damage to the bursting disc.

[0043] In application, the bursting surface 201 of a reverse-arch bursting disc is concave, mainly used in scenarios to prevent external pressure from damaging the inside of the container. When detecting such a bursting disc, its concave surface also faces the receiving cavity 112. The purpose of this design is to ensure that the bursting disc can correctly respond to external pressure changes during the detection process and at the same time verify its sealing performance. The usage method of the clamp 202 is the same as that of the positive-arch bursting disc. Through the firm connection with the cylinder body 101, it provides the necessary tightness for the detection process.

[0044] In one embodiment, it further includes a pressurizing device (not shown in the figure) for pressurizing the accommodating cavity 112 through the pressurizing hole 102.

[0045] In application, the pressurizing device is connected to the pressurizing hole 102 through a pipeline, and the type of fluid to be injected can be flexibly selected. A liquid fluid (such as water or other suitable liquid media) or a gaseous fluid (such as air, nitrogen, or other inert gases used alone or in combination) can be selected. When the pressurizing device injects air, the inflow of gas is precisely controlled through the pressurizing hole 102. In this process, the use of a pressure reducing valve can be combined to achieve precise regulation and control of the injected gas pressure. The addition of the pressure reducing valve can ensure that the injection pressure is stable and does not exceed the rated value of the rupture membrane, avoiding accidental damage to the rupture membrane during the detection process, and at the same time improving the accuracy and safety of the detection. When there is any form of leakage in the rupture membrane 200, whether it is a tiny break in the film layer or a structural defect, the injected fluid (whether liquid or gaseous) will cause a change in the internal pressure of the cylinder 101, and this change can be fed back to the outside by the pressure output device. Once an unexpected pressure drop or instability is monitored, it indicates that there may be a leakage. This monitoring method is sensitive and fast, capable of detecting potential problems early and preventing safety accidents caused by the failure of the rupture membrane. This detection method is not only applicable to single detection but can also be incorporated into a regular maintenance plan as part of preventive maintenance to ensure the long-term stable operation of the pressure vessel.

[0046] In one embodiment, it further includes a pressure output device for outputting the pressure in the accommodating cavity 112.

[0047] In application, the pressure state can be output in the form of display or sound. When the pressure is output in the form of display, devices such as a pointer pressure gauge or a digital pressure gauge can be used. When the pressure is output in the form of sound, it can be achieved through a piezoelectric sound output device. The pressure output device is used to monitor the pressure state inside the cylinder 101 and judge the leakage state according to this pressure state.

[0048] In this embodiment, through the pressure output device, combined with the pressurizing device, the sealed space (i.e., the space formed between the cylinder 101 and the film layer) is pressurized, which is convenient for monitoring the pressure state, thereby accurately judging the leakage state. The above structure is easy to implement and will not damage the rupture membrane.

[0049] In one embodiment, as Figures 3 to 6 shown, the cylinder 101 is provided with a support flange 103 at the end, and the support flange 103 is used to support the holder 202 of the rupture membrane 200.

[0050] In an application, the holder 202 of the rupture disk 200 is annular and is used to fix the rupture disk 200. A support flange 103 is provided at the end of the cylinder body 101, which can support the holder 202, and the holder 202 can be fixed in cooperation with bolts.

[0051] In one embodiment, a sealing ring (not shown in the figure) is provided between the holder 202 and the support flange 103.

[0052] In an application, the design of the sealing ring is related to the accuracy of the detection result. The sealing ring is usually made of a highly elastic material, such as a nitrile rubber (NBR) ring. In addition, depending on the specific application environment, materials such as silicone rubber and fluororubber may also be selected. The sealing ring is arranged on the contact surface between the holder 202 and the support flange 103. This position selection ensures that when the holder and the support flange are fixed by fasteners such as bolts, the sealing ring can be uniformly compressed to form a reliable sealing interface. This design effectively prevents the leakage of high-pressure fluid through the connection during the pressure test, thus avoiding misjudgment and potential safety hazards.

[0053] In an application, the holder 202 and the support flange 103 can be connected by bolts. The bolts pass through the holder 202, the sealing ring, and the support flange 103 from top to bottom, thereby fixing the holder 202 and the support flange 103 and realizing the compression of the sealing ring to ensure the sealing effect.

[0054] In one embodiment, the surface of the support flange 103 corresponding to the holder 202 is a first stepped surface 106, and the sealing ring and the holder 202 are arranged in the first stepped surface 106.

[0055] In an application, the first stepped surface 106 is a stepped surface with a higher outer side and a lower inner side. The design of the first stepped surface 106 provides a fixed assembly track for the sealing ring and the holder 202 through the clear boundary formed by the height difference between its inner and outer sides. This design is equivalent to introducing a natural guiding system during the assembly process, ensuring that the sealing ring can accurately fall into the predetermined position, avoiding misalignment or skew during assembly, and thus greatly improving the accuracy and reliability of the assembly.

[0056] In addition, through the ingenious design of the stepped surface, the assembly steps are simplified. The operator only needs to align the gripper 202 with the groove part of the first stepped surface 106, and the assembly can be completed quickly and directly, greatly shortening the assembly time and improving work efficiency. In addition, the design of the stepped surface not only facilitates assembly, but also provides a stable support platform for the sealing ring in terms of physical structure. When the gripper is fixed, the sealing ring is evenly compressed in the groove formed by the stepped surface, ensuring a continuous and tight seal between the sealing ring and the contact surfaces of the flange and the gripper, effectively preventing any potential leakage path and enhancing the overall sealing performance.

[0057] In one embodiment, a reinforcing inner rib plate 104 is provided at the intersection of the inner wall and the bottom wall of the accommodating cavity 112, and a reinforcing outer rib plate 105 is provided at the intersection of the outer wall of the cylinder body 101 and the support flange 103.

[0058] In application, the reinforcing inner rib plate 104 and the reinforcing outer rib plate 105 are used to improve the strength of the cylinder body 101. Among them, the reinforcing inner rib plate 104 is mainly used to prevent deformation or fracture between the side wall and the bottom of the cylinder body 101. The reinforcing outer rib plate 105 is used to improve the strength of the connection between the support flange 103 and the cylinder body, preventing the support flange 103 from tilting downward or breaking. The reinforcing inner rib plate 104 adopts a triangular plate structure pointing to the center of the circle of the cylinder body 101. The bottom length of the reinforcing inner rib plate 104 is less than the radius of the cylinder body 101, and its length range can be 1 / 2 to 2 / 3 of the radius. The slope of the triangular plate structure can be 15 to 30 degrees.

[0059] In this embodiment, the reinforcing inner rib plate 104 adopts a triangular plate structure, which can effectively disperse the stress concentration at the intersection of the side wall and the bottom of the cylinder body, preventing deformation or fracture caused by excessive local stress. This design makes the force more uniform by increasing the continuity of the structure and the smoothness of the transition. The length range of 1 / 2 to 2 / 3 of the radius of the reinforcing inner rib plate 104 not only ensures sufficient supporting force but also avoids interfering with the bursting disc by overoccupying the internal space. The setting of the reinforcing outer rib plate 105 is specifically designed to enhance the strength of the connection between the support flange 103 and the cylinder body 101, preventing the flange from tilting downward or breaking under high load conditions, thus ensuring the stability and reliability of the connection. By adding reinforcing rib plates on the periphery, the rigidity of the entire cylinder body structure can be significantly improved, and it can better withstand external pressure and avoid deformation.

[0060] In this embodiment, the settings of the reinforcing inner rib plate 104 and the reinforcing outer rib plate 105 can improve the strength of the cylinder body 101. At the same time, the reinforcing inner rib plate 104 can also provide a limit support for the film surface during the detection of the positive-arch bursting disc. For a normally shaped positive-arch bursting disc, its bursting surface usually does not contact the top of the reinforcing inner rib plate 104. When the positive-arch bursting disc deforms downward, the bursting surface can be limited by the reinforcing inner rib plate 104.

[0061] In one embodiment, as Figures 7 to 10 shown, it further includes a retaining ring 108 for pressing the gripper 202 against the support flange 103.

[0062] In application, the retaining ring 108 is used to press the gripper 202 against the support flange 103, and is also used to prevent the bolt from damaging the surface of the gripper 202 when the support flange 103 is bolted. A plurality of first bolt holes 107 are uniformly provided along the circumferential direction on the first step surface 106 of the support flange 103, and a plurality of second bolt holes 110 are uniformly provided along the circumferential direction on the retaining ring 108. The bursting disc to be detected can be hermetically assembled on the cylinder body 101 through bolts passing through the first bolt holes 107 and the second bolt holes 110.

[0063] In this embodiment, by uniformly pressing on the gripper 202, the retaining ring 108 can ensure a tight fit between the gripper and the support flange 103, preventing the existence of any tiny gaps, which is crucial for maintaining the system's sealing performance. Especially in a high-pressure environment, the presence of the retaining ring significantly improves the stability of the connection part, preventing loosening or leakage caused by pressure shock. During the process of using bolts to fix the support flange 103, the retaining ring 108 has a buffering and protective effect, avoiding the bolt head directly pressing on the surface of the gripper 202, thereby reducing damage or indentation on the gripper surface, extending the service life of the equipment and maintaining its aesthetics. The uniform distribution of the first step surface 106 and the second bolt holes 110 along the circumferential direction ensures that when the bolts are tightened, the pressure distribution between the retaining ring 108 and the support flange 103 and between the gripper 202 and the support flange 103 is uniform, avoiding local overpressure and reducing material stress concentration, thus improving the stability and safety of the overall structure. Through the collaborative design of bolts, retaining rings, support flanges, and grippers, the assembly of the bursting disc during detection becomes simple and efficient. The operator only needs to install the bolts in sequence according to the preset hole positions and tighten them to complete the assembly of the bursting disc, greatly saving installation time and labor costs.

[0064] In one embodiment, the retaining ring 108 may also be provided with a second step surface 111, and the second step surface 111 is disposed on the surface of the retaining ring 108 facing the gripper 202, and its inner surface protrudes from the outer surface to form a stepped surface. The setting of the second step surface 111 reserves an assembly space for the sealing ring and the gripper 202, so that the heights of the assembled components are consistent, further ensuring the reliability and sealing performance of the assembly.

[0065] In one embodiment, the retaining ring 108 is provided with a handle 109.

[0066] In an application, the handle 109 is used to facilitate manual handling. The handle can be disposed around or on the outer surface of the pressing ring 108. The number of handles can be one, two, or more, and the specific number can be set according to actual needs. The shape of the handle can be annular or handle-shaped. The present embodiment does not limit the shape of the handle, as long as it can be held by the hand.

[0067] The working principle of the low-pressure cylinder outer cylinder bursting disc leak detection device provided in this embodiment is as follows:

[0068] Place the sealing ring in the first step surface 106 of the cylinder body 101. Place the bursting disc to be detected on the cylinder body 101 with the bursting surface facing the inner cavity 112 of the cylinder body 101, and make the gripper 202 located in the first step surface 106. Place the pressing ring 108 on the gripper 202, and make the first bolt hole 107 and the second bolt hole 110 correspond. Fasten the pressing ring 108 with bolts to make the sealing ring in a compressed state, and form a sealed space between the cylinder body 101 and the film layer.

[0069] After the bursting disc is assembled in place, connect the pressure testing device to the pressure testing hole 102 through a pipeline. Use the pressure testing device to pressurize the pressure testing hole 102. After injecting the specified pressure, monitor the pressure holding state for the specified time period through the pressure output device. When the pressure in the specified time period is lower than the preset pressure value, it is determined that the bursting disc has a leak, otherwise there is no leak.

[0070] Embodiment 2

[0071] Another aspect of the embodiment of the present application provides a low-pressure cylinder leak detection device for detecting leaks in the low-pressure cylinder of a steam turbine. It integrates the low-pressure cylinder outer cylinder bursting disc leak detection device 100 provided in the above embodiment.

[0072] In an application, the bursting disc of the low-pressure cylinder is installed on the low-pressure outer cylinder and serves as a vacuum sealing boundary. One side is communicated with the low-pressure cylinder outer cylinder, and the other side is in contact with the atmosphere, and is used to burst and communicate with the atmosphere when the pressure in the outer cylinder is too high. When the vacuum of the condenser deteriorates or the oxygen content of the condensate exceeds the limit value in the low-pressure cylinder, it is necessary to detect the low-pressure cylinder. By using the low-pressure cylinder leak detection device integrated with the low-pressure cylinder outer cylinder bursting disc leak detection device for detection, low-pressure cylinder failures caused by bursting disc leaks can be identified.

[0073] In the above embodiments, the descriptions of each embodiment have their own emphases. For parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A low-pressure cylinder outer cylinder bursting membrane leak detection device, characterized in that: It comprises a cylinder (101) sealedly connected to a bursting membrane (200), the cylinder (101) being provided with a receiving cavity (112) corresponding to the bursting surface of the bursting membrane (200), and the cylinder (101) being provided with a punching hole (102) communicating with the receiving cavity (112).

2. The low-pressure cylinder outer cylinder bursting disk leak detection device according to claim 1, characterized in that: It also includes a pressing device for pressing the accommodating cavity (112) through the pressing hole (102).

3. The low-pressure cylinder outer cylinder bursting disk leak detection device according to claim 1, characterized in that: It also includes a pressure output device for outputting the pressure in the accommodating chamber (112).

4. The low-pressure cylinder outer cylinder bursting disk leak detection device according to claim 1, characterized in that: The cylinder (101) is provided with a supporting flange (103) at the end thereof, and the supporting flange (103) is used to support the holder (202) of the bursting membrane (200).

5. The low-pressure cylinder outer cylinder bursting disk leak detection device according to claim 4, characterized in that: It also includes a pressing ring (108) for pressing the clamp (202) against the supporting flange (103).

6. The low-pressure cylinder outer cylinder bursting membrane leak detection device according to claim 4, characterized in that: A sealing ring is provided between the clamp (202) and the supporting flange (103).

7. The low-pressure cylinder outer cylinder bursting membrane leak detection device according to claim 6, characterized in that: The surface corresponding to the support flange (103) and the clamp (202) is a first step surface (106), and the sealing ring and the clamp (202) are arranged in the first step surface (106).

8. The low-pressure cylinder outer cylinder bursting disk leak detection device according to any one of claims 4 to 7, characterized in that: A reinforcing inner rib plate (104) is provided at the intersection of the inner wall and the bottom wall of the accommodating cavity (112), and a reinforcing outer rib plate (105) is provided at the intersection of the outer wall of the cylinder (101) and the supporting flange (103).

9. The low-pressure cylinder outer cylinder bursting disk leak detection device according to claim 5, characterized in that: The pressing ring (108) is provided with a handle (109).

10. A low-pressure cylinder leak detection device, characterized in that: It comprises a low-pressure cylinder outer cylinder bursting membrane leak detection device (100) as claimed in any one of claims 1 to 9.

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