Safety relief device of pressure container and pressure container
By designing a safe discharge device including filters, switch valves, explosion discs, buffer tubes and fire arresters in the pressure vessel, the problem of the inability to deal with explosive particles or powder media in the prior art is solved, and safe and stable discharge is achieved Put and seal.
Patent Information
- Application Number
- CN202421161224.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-24
AI Technical Summary
The safety discharge device of existing pressure vessels cannot effectively deal with both explosive media and particles or powder media, and cannot discharge scientifically, reasonably, safely and reliably.
A safety discharge device including a first filter, a first switch valve, a blasting disc, a first safety valve, a buffer pipe, a variable diameter pipe, a discharge pipe and a fire arrester are designed to filter the gas through the first filter Powder and granules are used to cope with rapid pressure growth, buffer pipes reduce the impact on the safety valve, and prevent backfire through a fire arrester.
It realizes safe discharge of flammable and explosive media, avoids the problem of lax sealing caused by solid material pollution, improves the safety and stability of the discharge device, and ensures the safe operation of the pressure vessel.
Smart Images
Figure CN222351533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure vessel pressure relief, in particular to a safety relief device for a pressure vessel and a pressure vessel. Background Art
[0002] The design principle of conventional pressure vessel safety relief devices is: when the container needs to be installed with a relief device and there are no special requirements, the safety valve should be used first. However, the safety valve can only be used for clean, solid-free, low-viscosity media; and cannot be used alone in situations where the pressure increases rapidly. The bursting disc safety device is suitable for situations where the pressure increases rapidly; but it cannot be used alone in situations where highly explosive media, such as flammable liquids, gases, and liquefied gases, etc.
[0003] If there are both explosive media and granular or powdered media, it is a difficult problem to set up a safety relief device scientifically, reasonably, safely and reliably. Conventional design principles do not provide a specific and reasonable design solution. Utility Model Content
[0004] In view of the above shortcomings of the prior art, the utility model provides a safe relief device for a pressure vessel to improve the technical problem that the existing relief devices cannot satisfy the relief of pressure vessels containing both combustible solid particles and combustible gas mixtures.
[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a safety relief device for a pressure vessel, comprising a first filter, wherein the input end of the first filter is configured to be connected to the safety relief port of the pressure vessel; a first switch valve, wherein the input end of the first switch valve is connected to the output end of the first filter; a bursting disc, which is arranged on the output end side of the first switch valve; a first safety valve, which is arranged on the output end side of the bursting disc; a buffer tube, which is arranged between the first safety valve and the bursting disc; a reducer, which is arranged on the output end side of the first safety valve; a discharge pipe, which is arranged on the output end side of the reducer; and a flame arrester, which is connected to the output end of the discharge pipe.
[0006] In an exemplary embodiment of the present application, a sterilizer is included, and the sterilizer is disposed between the exhaust pipe and the flame arrester.
[0007] In an exemplary embodiment of the present application, a first pressure gauge is included, and the first pressure gauge is disposed at the buffer tube.
[0008] In an exemplary embodiment of the present application, a second switch valve is included, an input end of the second switch valve is connected to the buffer pipe, and an output end of the second switch valve is connected to the discharge pipe.
[0009] In an exemplary embodiment of the present application, the bursting disc is a reverse dome-shaped bursting disc.
[0010] The present application also provides a pressure vessel, comprising: a main body, in which a chamber is arranged; a gas inlet and outlet, arranged on the main body, and the gas inlet and outlet are connected to the gas inlet and outlet pipes; a safety relief port, arranged on the main body, and the safety relief port is connected to the chamber; a safety relief device for the pressure vessel described in any one of the above, wherein the safety relief device is connected to the safety relief port.
[0011] In an exemplary embodiment of the present application, a second filter is included and is disposed on the gas inlet and outlet pipe.
[0012] In an exemplary embodiment of the present application, a third switch valve is included, the input end of the third switch valve is connected to the gas inlet and outlet pipe, and the output end of the third switch valve is connected to the exhaust pipe.
[0013] In an exemplary embodiment of the present application, a second safety valve is included, which is arranged behind the output end of the third switch valve, and the output end of the second safety valve is connected to the exhaust pipe.
[0014] In an exemplary embodiment of the present application, a fourth switch valve is included, and the fourth switch valve is arranged on the gas inlet and outlet pipe, and the fourth switch valve is arranged at an end of the second filter away from the main body.
[0015] The beneficial effects of the utility model are:
[0016] The safety relief device of the present application includes a first filter, which can filter powders, particles, etc. in the gas and only allow the gas to pass through, so as to prevent the first safety valve and other devices from being contaminated by powders, particles, etc., resulting in problems such as poor sealing. By setting a bursting disc, the need for release in the case of rapid pressure growth can be met. A buffer tube is set between the bursting disc and the first safety valve, which can play a certain role in pressure relief when the bursting disc ruptures, alleviate the impact on the first safety valve, and thus improve the safety of the use of the first safety valve.
[0017] By setting up the first filter, the solid matter such as dust and particles in the mixed material is filtered, so as to ensure the cleanliness of the sealing surface of the first switch valve, the first safety valve and other valves, and ensure the sealing of the safety relief device. The safe discharge of the mixed material is achieved; the loose sealing caused by the contamination of the valve sealing surface by the particles or powder contained is avoided; the safe discharge of flammable and explosive media is ensured; and the safe and stable operation of the pressure vessel and its safety relief device is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of an exemplary pressure vessel with a safety relief device according to the present application.
[0020] Component number description
[0021] 100, main body; 110, gas inlet and outlet; 111, gas inlet and outlet pipe; 120, safety discharge port; 130, second filter; 140, third switch valve; 150, second safety valve; 160, fourth switch valve;
[0022] 2. First filter; 3. First switch valve; 4. Bursting disc; 5. First safety valve; 6. Buffer tube; 7. Reducer; 8. Discharge pipe; 9. Flame arrester; 10. Sterilizer; 11. First pressure gauge; 12. Second switch valve. DETAILED DESCRIPTION
[0023] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.
[0024] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.
[0025] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.
[0026] With the development of new energy technology, especially the widespread application of hydrogen energy as a clean energy, the storage of hydrogen energy has always been an important part of the development of hydrogen energy. The pressure vessel storing hydrogen energy contains a mixture of combustible solid particles or powdered materials, and at the same time contains combustible gases. The existing safety relief device cannot meet the requirements of safe relief of pressure vessels mixed with combustible gases and combustible fixed particles.
[0027] In view of this, the utility model provides a safety discharge device for a pressure vessel, which can safely discharge a pressure vessel in which gas and solid particles or powder are mixed, such as a solid hydrogen storage pressure vessel. The safety discharge device includes a first filter 2, a first switch valve 3, a bursting disc 4, a first safety valve 5, a buffer tube 6, a reducer 7, a discharge pipe 8 and a flame arrester 9. The input end of the first filter 2 is connected to the safety discharge port 120 of the pressure vessel. The first filter 2 filters and isolates solid materials such as dust and particles that come out of the safety discharge port 120 to prevent solid materials from entering the safety discharge device, reduce the adverse effects of dust and particles on the opening and closing of the first switch valve 3, the first safety valve 5, etc., reduce the problem of poor sealing of the first switch valve 3, the first safety valve 5, etc., and improve the safety and durability of the safety discharge device. Further, the first filter 2 is a precision filter that can filter solid materials such as dust and particles. The first filter 2 is arranged at the input end of the safety discharge device, which can not only ensure the safety of discharge, but also improve the durability of the safety discharge device.
[0028] The input end of the first switch valve 3 is connected to the output end of the first filter 2. By arranging the first switch valve 3 at the rear end of the first filter 2, the opening and closing of the safety relief device can be controlled, and at the same time, the powder, particles, etc. in the pressure vessel can be prevented from reaching the first switch valve 3 to affect the use of the first switch valve 3. The first switch valve 3 can be a ball valve, a stop valve, a solenoid valve, etc., preferably a ball valve, which is convenient, stable and durable. In other embodiments of the present application, the first switch valve 3 can be other switch valves.
[0029] The bursting disc 4 is arranged at the output end side of the first switch valve 3, and the bursting disc 4 can meet the need of safe discharge in the scenario of rapid pressure increase, thereby ensuring the need of safe discharge in the scenario of rapid pressure increase. Further, the bursting disc 4 uses an inverted arched bursting disc 4, and the convex surface of the inverted arched bursting disc 4 is on the high-pressure side of the pressure system. When it is actuated, it turns over, ruptures or falls off due to compression instability, meeting the need of discharge when the pressure increases rapidly.
[0030] The first safety valve 5 is arranged at the output end side of the bursting disc 4. The first safety valve 5 is used in conjunction with the bursting disc 4 to meet the need for safe discharge of toxic and explosive media in situations where pressure increases rapidly. For example, the discharge needs of pressure vessels storing flammable and explosive gases such as hydrogen. Exemplarily, the specifications of the first safety valve 5 are selected and calculated based on the working conditions of the pressure vessel and the safe discharge volume of the pressure vessel, and the discharge capacity of the first safety valve 5 is checked. Furthermore, the first safety valve 5 is installed vertically.
[0031] The buffer tube 6 is disposed between the first safety valve 5 and the bursting disc 4. The buffer tube 6 can buffer the gas released by the bursting disc 4 and reduce the impact on the first safety valve 5. In an embodiment of a safety relief device, the buffer tube 6 is a straight tube, directly connecting the first safety valve 5 and the bursting disc 4.
[0032] The reducer 7 is arranged on the output end side of the first safety valve 5. The reducer 7 is used to adjust the pipe diameters of the input end and the output end. By using the reducer 7 to adjust the flow rate and pressure, stable and safe discharge is guaranteed.
[0033] The discharge pipe 8 is arranged on the output end side of the reducer 7, and the gas is discharged to a place far away from the pressure vessel or a designated place through the discharge pipe 8. The flame arrester 9 is connected to the output end of the discharge pipe 8, so as to prevent the problem of flashback of the flammable and explosive gas during deflagration and prevent the flame from entering the safety discharge device. Furthermore, the flame arrester 9 is mainly composed of a shell and a filter element. The shell has sufficient strength to withstand the impact pressure generated by the explosion. The filter element is the main component to prevent the spread of flames. Exemplarily, the filter element can be a metal mesh filter element or a corrugated filter element.
[0034] In an embodiment of a safety discharge device of the present application, the safety discharge device includes a sterilizer 10, which is arranged between the discharge pipe 8 and the flame arrester 9. Exemplarily, the required medium is placed in the sterilizer 10 according to actual needs, and the toxic substances in the gas are harmlessly treated before being discharged into the atmosphere.
[0035] In an embodiment of a safety relief device of the present application, the safety relief device also includes a first pressure gauge 11, which is arranged at the buffer tube 6. By setting the first pressure gauge 11, the pressure at the buffer tube 6 can be monitored, thereby facilitating the monitoring of the pressure in the safety relief device.
[0036] In an embodiment of a safety relief device of the present application, the safety relief device further includes a second switch valve 12, the input end of the second switch valve 12 is connected to the buffer tube 6, and the output end of the second switch valve 12 is connected to the discharge pipe 8. By setting the second switch valve 12, when the pressure in the buffer tube 6 is too high instantly, that is, the pressure at the input end of the first safety valve 5 is too high, it can be discharged through the branch where the second switch valve 12 is located, and the branch where the second switch valve 12 is located is connected in parallel with the first safety valve 5, thereby alleviating the instantaneous high pressure generated by the explosion of the bursting disc 4 faced by the first safety valve 5. Exemplarily, the second switch valve 12 can be a ball valve, a stop valve, or a solenoid valve. Preferably, the second switch valve 12 is a solenoid valve, and the second switch valve 12 is opened and closed according to the monitoring pressure of the first pressure gauge 11.
[0037] The safety relief device of the present application relies on the first filter 2 to first isolate the powder material below the first switch valve 3, and the filtered clean gas is not easy to cause pollution to the sealing surface of the first switch valve 3. After being discharged through the bursting disc 4, the clean gas enters the buffer tube 6, and when it is discharged through the first safety valve 5, the filtered clean gas will not cause powder pollution to the sealing surface of the first safety valve 5. When the pressure in the container is reduced to the return pressure of the first safety valve 5, the first safety valve 5 can be smoothly returned to the seat, and the effective sealing of the first safety valve 5 can be realized again, so as to keep the pressure in the container stable and operate safely. It solves the problem that a single safety relief device cannot adapt to mixed materials; avoids the problem of loose sealing caused by the particles or powder contained in the valve sealing surface contaminating; solves the problem of safe discharge of flammable and explosive media or toxic and hazardous media; and realizes the safe and stable operation of the pressure vessel and its safety relief device.
[0038] The present application also provides a pressure vessel, which includes a main body 100, a gas inlet and outlet 110, a safety relief port 120 and any of the above safety relief devices. A chamber is provided in the main body 100, which can be used to store a mixture of solid particle powder materials and combustible gas. The gas inlet and outlet 110 is provided on the main body 100, and the gas inlet and outlet 110 is connected to the gas inlet and outlet pipe 111 to realize the injection of gas into the chamber or the output of gas from the chamber. The safety relief port 120 is provided at the upper part of the main body 100, and the safety relief port 120 is connected to the chamber. The safety relief device is connected to the safety relief port 120. When discharge is required, discharge is performed through the safety relief port 120 and the safety relief device.
[0039] In a pressure vessel embodiment of the present application, the pressure vessel also includes a second filter 130, which is disposed on the gas inlet and outlet pipe 111. When the pressure vessel outputs gas to the outside through the gas inlet and outlet 110, the second filter 130 filters the powder, particles, etc. in the pressure vessel to reduce the powder and other solid particles mixed in the gas.
[0040] In a pressure vessel embodiment of the present application, the pressure vessel includes a third switch valve 140, the input end of the third switch valve 140 is connected to the gas inlet and outlet pipe 111, and the output end of the third switch valve 140 is connected to the discharge pipe 8. Further, the output end of the third switch valve 140 is connected to the second safety valve 150, and the output end of the second safety valve 150 is connected to the discharge pipe 8. The second safety valve 150 is connected in parallel with the first safety valve 5, which further improves the safety discharge requirements of the pressure vessel in special circumstances and improves the safety of discharge. Exemplarily, the third switch valve 140 is arranged on the side of the second filter 130 away from the main body 100, so that the second filter 130 can filter the gas entering the third switch valve 140.
[0041] In an embodiment of a pressure vessel of the present application, a fourth switch valve 160 is further included, and the fourth switch valve 160 is arranged on the gas inlet and outlet pipe 111, and the fourth switch valve 160 is arranged at one end of the second filter 130 away from the main body 100. The opening and closing of the gas inlet and outlet 110 is controlled by the fourth switch valve 160. The fourth switch valve 160 is arranged at one end of the filter away from the main body 100, which can reduce the powder, particles, etc. in the chamber from entering the sealing surface of the fourth switch valve 160, and ensure the sealing performance of the fourth switch valve 160.
[0042] In a pressure vessel embodiment of the present application, the pressure vessel also includes structures such as a temperature measuring port and a pressure measuring port. Please refer to the existing pressure vessel structure, and the present application will not elaborate on this.
[0043] The safety relief device of the pressure vessel of the utility model solves the problem that a single safety relief device cannot adapt to mixed materials; avoids the problem of poor sealing caused by the contained particles or powders contaminating the valve sealing surface; solves the problem of safe discharge of flammable and explosive media or toxic and hazardous media; and achieves the beneficial effect of safe and stable operation of the pressure vessel and its safety relief device. Therefore, the utility model effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.
Claims
1. A safety relief device for a pressure vessel, characterized in that: include: a first filter, wherein an input end of the first filter is configured to be connected to a safety relief port of a pressure vessel; a first switch valve, wherein an input end of the first switch valve is connected to an output end of the first filter; A bursting disc, arranged at the output end side of the first switch valve; A first safety valve, arranged at the output end side of the bursting disc; a buffer tube, disposed between the first safety valve and the bursting disc; A reducer, arranged at the output end side of the first safety valve; A discharge pipe is arranged at the output end side of the reducer; A flame arrester is connected to the output end of the discharge pipeline.
2. The safety relief device for a pressure vessel according to claim 1, characterized in that: A sterilizer is included, and the sterilizer is arranged between the discharge pipe and the flame arrester.
3. The safety relief device for a pressure vessel according to claim 2, characterized in that: A first pressure gauge is included, and the first pressure gauge is arranged at the buffer tube.
4. The safety relief device for a pressure vessel according to claim 2, characterized in that: It comprises a second switch valve, the input end of the second switch valve is connected to the buffer pipe, and the output end of the second switch valve is connected to the discharge pipeline.
5. The safety relief device for a pressure vessel according to claim 1, characterized in that: The bursting disc is a reverse-arched bursting disc.
6. A pressure vessel, characterized in that: include: a main body portion, in which a chamber is disposed; A gas inlet and outlet are provided on the main body, and the gas inlet and outlet are connected to the gas inlet and outlet pipes; A safety relief port is provided on the main body, and the safety relief port is connected to the chamber; The safety relief device for a pressure vessel according to any one of claims 1 to 5, wherein the safety relief device is connected to the safety relief port.
7. The pressure vessel according to claim 6, characterized in that It includes a second filter, which is arranged on the gas inlet and outlet pipes.
8. The pressure vessel according to claim 7, characterized in that: A third switch valve is included, wherein the input end of the third switch valve is connected to the gas inlet and outlet pipe, and the output end of the third switch valve is connected to the exhaust pipe.
9. The pressure vessel according to claim 8, characterized in that A second safety valve is included, which is arranged behind the output end of the third switch valve, and the output end of the second safety valve is connected to the discharge pipeline.
10. The pressure vessel according to claim 9, characterized in that A fourth switch valve is included, wherein the fourth switch valve is arranged on the gas inlet and outlet pipe, and the fourth switch valve is arranged at an end of the second filter away from the main body.