Pressure relief plug and double-cylinder pressure device
By designing pressure relief plugs, including pressure relief nuts and studs, safety hazards in pressure relief operations of pressure vessels are solved, and a stable and safe pressure relief process is achieved to avoid oil leakage and equipment safety risks.
Patent Information
- Application Number
- CN202421962070.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In thermal power plants, pressure relief operations of pressure vessels pose safety risks, especially when switching handles or seals are leaked, which may cause oil drain plugs to fall off and oil leakage, increasing the safety risks of equipment.
A pressure relief plug is designed, including a pressure relief nut and a pressure relief stud. The pressure relief stud can be screwed to the oil drain hole at the bottom of the pressure vessel, and the pressure relief nut is sealed on the outside of the oil drain hole to ensure that the pressure relief stud will not fall off during pressure relief, and stable pressure relief is achieved through the pressure relief channel and pressure relief hole.
Through stable connections and adjustable pressure relief studs, ensure smooth pressure relief of the pressure vessel, avoid oil leakage and safety hazards, and ensure the safety of operations.
Smart Images
Figure CN222992122U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure relief of pressure vessels, in particular to a pressure relief plug and a double-cylinder pressure device. Background Art
[0002] At present, there are multiple pressure vessels in thermal power plants. Before the staff carry out corresponding operations, isolation measures need to be taken, that is, the screws in the pressure relief holes on the pressure vessels need to be loosened to relieve the pressure, so as to ensure the personal safety of the operators. As Figure 1 shown, specifically, when cleaning the double-cylinder filter screen in the lubricating oil station, the handle needs to be switched to the state of the normal filter screen. To ensure the safe implementation of this operation, an oil draining operation needs to be carried out on the oil draining plug 300 at the bottom of the filter screen for cleaning and replacement. However, if the operator cannot switch the handle in place or there is a seal leakage in the double cylinder itself, the operator cannot directly observe, and when carrying out the oil draining operation, the oil draining plug 300 is likely to suddenly loosen and fall off due to the above reasons, resulting in oil leakage, making the operating equipment have great potential safety hazards. At the same time, it is very difficult to directly install the oil draining plug 300 back under the condition of double-cylinder pressure, which will lead to more dangers. Therefore, how to relieve the pressure of the pressure vessel in time to avoid potential safety hazards caused by accidental factors, and the position of the plug is controllable during pressure relief without causing oil leakage is a problem that needs to be solved by those skilled in the art at present. Content of the Utility Model
[0003] The purpose of the utility model is to provide a pressure relief plug and a double-cylinder pressure device, so as to relieve the pressure of the pressure vessel in time to avoid potential safety hazards caused by accidental factors, and the position of the plug is controllable during pressure relief without causing oil leakage.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A pressure relief plug, including:
[0006] A pressure relief nut and a pressure relief stud, the pressure relief stud can be screwed into the oil draining hole at the bottom of the pressure vessel, the pressure relief nut can cover the outside of the oil draining hole, and the pressure vessel can relieve the pressure inside through the pressure relief stud, and the pressure relief stud will not fall off in the oil draining hole during pressure relief.
[0007] Optionally, a pressure relief hole and a pressure relief channel are arranged on the pressure relief stud, the pressure relief channel is arranged along the axis direction of the pressure relief stud, and the axis of the pressure relief hole is perpendicular to the axis of the pressure relief channel.
[0008] Optionally, one end of the pressure relief hole passes through the side of the pressure relief stud, and the other end is connected to the pressure relief channel, and when the pressure relief hole is located outside the oil drain hole, the pressure vessel can relieve pressure inside it through the pressure relief channel and the pressure relief hole.
[0009] Optionally, the pressure relief passage is arranged through a side of the pressure relief stud facing away from the pressure relief nut, and when the pressure vessel is depressurized, the pressure relief passage is connected to the interior of the pressure vessel.
[0010] As an option, the inner diameter of the pressure relief hole is set to 2 mm.
[0011] As an option, the inner diameter of the pressure relief channel is set to 2 mm.
[0012] Optionally, the length of the pressure relief stud is less than or equal to the depth of the oil drain hole.
[0013] Optionally, the pressure relief nut and the pressure relief stud are an integrated structure.
[0014] On the other hand, a double-barrel pressure device includes a pressure relief plug, a pressure vessel and a bracket. Two pressure vessels are provided. The two pressure vessels are arranged on the bracket in parallel and at intervals. Each of the pressure vessels is provided with a pressure relief plug.
[0015] Optionally, the pressure relief plug is located at the bottom of the pressure vessel, and is used to seal the oil drain hole at the bottom of the pressure vessel or to relieve pressure inside the pressure vessel.
[0016] Beneficial effects of the utility model:
[0017] In the utility model, the screw connection between the pressure relief stud and the pressure vessel can ensure the stable connection between the pressure relief plug and the pressure vessel, and the position of the pressure relief stud can be adjusted. Furthermore, the pressure relief nut can be sealed on the outside of the oil drain hole, so that the pressure vessel can be blocked to avoid oil leakage. Specifically, the pressure vessel can relieve pressure inside through the pressure relief stud, and the pressure relief stud will not fall off in the oil drain hole during pressure relief, so as to ensure smooth pressure relief of the pressure vessel to avoid safety hazards caused by unexpected factors, and the position can be controlled during pressure relief so that the pressure vessel will not leak oil, so as to ensure the safety of the operation. On the other hand, the double-barrel pressure device is provided with a pressure relief plug, and the pressure relief plug can also be used to relieve pressure to determine whether the pressure vessel is under pressure, and pressure relief can be performed according to the corresponding situation or the equipment can be checked in real time to ensure the safe operation of the operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of a plug in the prior art;
[0019] Figure 2 is an axonometric schematic diagram of the double-cylinder pressure device described in the embodiment of the present utility model;
[0020] Figure 3 is another axonometric schematic diagram of the double-cylinder pressure device described in the embodiment of the present utility model;
[0021] Figure 4 is a front view schematic diagram of the double-cylinder pressure device described in the embodiment of the present utility model;
[0022] Figure 5 is a bottom view schematic diagram of the double-cylinder pressure device described in the embodiment of the present utility model;
[0023] Figure 6 is a structural schematic diagram of the pressure relief plug described in the embodiment of the present utility model.
[0024] In the figure:
[0025] 100 - pressure vessel; 200 - support; 300 - oil drain plug; 10 - pressure relief plug; 11 - pressure relief nut; 12 - pressure relief stud; 101 - pressure relief hole; 102 - pressure relief channel. Detailed implementation manners
[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.
[0027] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] In the description of the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.
[0029] At present, there are multiple pressure vessels in thermal power plants. Before the staff carry out corresponding operations, isolation measures need to be taken, that is, the screws in the pressure relief holes on the pressure vessels need to be loosened to relieve the pressure, so as to ensure the personal safety of the operators. As Figure 1 shown, specifically, when cleaning the double - tube filter in the lubricating oil station, the handle needs to be switched to the state of the normal filter. To ensure the safe implementation of this operation, an oil - draining operation needs to be carried out on the oil - draining plug 300 at the bottom of the filter for cleaning and replacement. However, if the operator cannot switch the handle in place or there is a seal leakage in the double - tube itself, the operator cannot directly observe, and when carrying out the oil - draining operation, the oil - draining plug 300 is likely to suddenly loosen and fall off due to the above reasons, resulting in oil leakage, making the equipment in operation have great potential safety hazards. At the same time, it is very difficult to directly install the oil - draining plug 300 back under the condition of the double - tube being under pressure, which will lead to more dangers. Therefore, how to relieve the pressure of the pressure vessel in time to avoid potential safety hazards caused by accidental factors, and the position of the plug is controllable during pressure relief without causing oil leakage is a problem that needs to be solved by those skilled in the art at present.
[0030] The technical solutions of this embodiment will be further described below with reference to the drawings and through specific implementation manners.
[0031] As Figures 2 - 6 shown, this embodiment provides a pressure - relief plug 10, which includes a pressure - relief nut 11 and a pressure - relief stud 12. The pressure - relief stud 12 can be screwed into the oil - draining hole at the bottom of the pressure vessel 100, and the pressure - relief nut 11 can cover the outside of the oil - draining hole. Moreover, the pressure vessel 100 can relieve the pressure inside through the pressure - relief stud 12, and the pressure - relief stud 12 will not fall off from the oil - draining hole during pressure relief. On the other hand, the double - tube pressure device includes a pressure - relief plug 10, a pressure vessel 100 and a bracket 200. There are two pressure vessels 100, and the two pressure vessels 100 are arranged in parallel and spaced on the bracket 200, and each pressure vessel 100 is provided with a pressure - relief plug 10.
[0032] Specifically, in this embodiment, the threaded connection between the pressure relief stud 12 and the pressure vessel 100 can ensure the stable connection between the pressure relief plug 10 and the pressure vessel 100, and the position of the pressure relief stud 12 is adjustable. Further, the pressure relief nut 11 can cover the outside of the oil drain hole, thereby blocking the pressure vessel 100 to prevent oil leakage. Specifically, the pressure vessel 100 can relieve the pressure inside through the pressure relief stud 12, and during the pressure relief process, the pressure relief stud 12 will not fall off from the oil drain hole, thereby ensuring the smooth pressure relief of the pressure vessel 100, avoiding potential safety hazards caused by accidental factors, and the controllable position during pressure relief ensures that the pressure vessel 100 will not leak oil, thus ensuring the safety of the operation. On the other hand, the double-barrel pressure device is provided with a pressure relief plug 10, and it can also relieve the pressure through the pressure relief plug 10 to determine whether the pressure vessel 100 is pressurized, and can relieve the pressure according to the corresponding situation or inspect the equipment in real time to ensure the safe operation of the operators.
[0033] The specific structure of the pressure relief plug in this embodiment will be described below.
[0034] Combined Figure 2 and Figure 6 As shown, in this embodiment, the pressure relief plug 10 is provided on the pressure vessel 100 and is located at the bottom of the pressure vessel 100. Specifically, an oil drain hole is provided at the bottom of the pressure vessel 100, and the pressure relief plug 10 is screwed onto the inner wall of the oil drain hole, and its position is adjustable to block or relieve the pressure of the pressure vessel 100.
[0035] Specifically, in this embodiment, the pressure relief plug 10 includes a pressure relief nut 11 and a pressure relief stud 12. Optionally, the pressure relief stud 12 can be screwed into the oil drain hole, the pressure relief nut 11 can cover the outside of the oil drain hole, and the pressure vessel 100 can relieve the pressure inside through the pressure relief stud 12. During the pressure relief process, the pressure relief stud 12 will not fall off from the oil drain hole to avoid oil leakage when the pressure inside the pressure vessel 100 is not fully relieved, increasing potential safety hazards. Exemplarily, in this embodiment, the pressure relief nut 11 and the pressure relief stud 12 are of an integrated structure to ensure the mechanical strength of the pressure relief plug 10 and prevent it from breaking during operation. Further, the outer diameter of the pressure relief nut 11 is larger than the outer diameter of the pressure relief stud 12, and the outer diameter of the pressure relief nut 11 is larger than the inner diameter of the oil drain hole, so as to be able to cover the outside of the oil drain hole and prevent oil leakage. Optionally, an external thread is provided on the outside of the pressure relief stud 12, and an internal thread matching its external thread is provided on the inner wall of the oil drain hole, so as to ensure the stable connection between the pressure relief stud 12 and the oil drain hole, facilitate the adjustment of the position of the pressure relief stud 12, and ensure that during the pressure relief process, the pressure relief stud 12 will not fall off from the pressure vessel 100 through the threaded connection between the pressure relief stud 12 and the oil drain hole, thereby reducing the safety risk.
[0036] Optionally, a pressure relief hole 101 and a pressure relief channel 102 which are in communication with each other are provided on the pressure relief stud 12, and the pressure relief channel 102 is arranged along the axial direction of the pressure relief stud 12. The axis of the pressure relief hole 101 is perpendicular to the axis of the pressure relief channel 102, so as to ensure smooth pressure relief. Specifically, one end of the pressure relief hole 101 penetrates through the side surface of the pressure relief stud 12, and the other end is communicated with the pressure relief channel 102. When the pressure relief hole 101 is communicated with the outside at the outer side of the oil drain hole, the pressure vessel 100 can relieve the internal pressure through the pressure relief channel 102 and the pressure relief hole 101, so as to ensure the safety of the subsequent oil draining process. Further, the pressure relief channel 102 penetrates through the side of the pressure relief stud 12 away from the pressure relief nut 11, and during the pressure relief process of the pressure vessel 100, the pressure relief channel 102 is communicated with the inside of the pressure vessel 100, so as to ensure the communication effect between the inside of the pressure vessel 100 and the outside and ensure the stability of pressure relief. Exemplarily, the inner diameters of both the pressure relief hole 101 and the pressure relief channel 102 are set to 2 mm, and the length of the pressure relief stud 12 is less than or equal to the depth of the oil drain hole, so as to ensure smooth pressure relief. Other corresponding values can also be set in other embodiments, which will not be elaborated here.
[0037] The specific structure of the double-cylinder pressure device in this embodiment will be described below.
[0038] As Figures 2 - 5 shown, the double-cylinder pressure device in this embodiment includes a pressure relief plug 10, a pressure vessel 100, and a bracket 200. There are two pressure vessels 100, and the two pressure vessels 100 are parallel and spaced apart on the bracket 200, thus ensuring the stable placement of the pressure vessel 100. Further, a pressure relief plug 10 is provided on each pressure vessel 100. Specifically, the pressure relief plug 10 is located at the bottom of the pressure vessel 100 and is used to seal the oil drain hole at the bottom of the pressure vessel 100 or relieve the internal pressure of the pressure vessel 100. At the same time, if the pressure relief plug 10 cannot relieve the pressure of the pressure vessel 100, the operator can check the pressure vessel 100 in time to see whether there is no pressure inside the pressure vessel 100 or whether the pressure vessel 100 fails, thereby avoiding a greater safety accident. Specifically, if it is found that the pressure in the pressure vessel 100 cannot be relieved, the pressure relief plug 10 can be immediately tightened, and then the cause can be found and quickly processed, so as to avoid the equipment failure problem caused by the oil leakage of the fuel tank when the plug is directly loosened and dropped in the prior art.
[0039] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. Pressure relief plug, characterized in that: include: A pressure relief nut (11) and a pressure relief stud (12), wherein the pressure relief stud (12) can be screwed to an oil drain hole at the bottom of the pressure container (100), the pressure relief nut (11) can be sealed on the outside of the oil drain hole, and the pressure container (100) can release pressure inside thereof through the pressure relief stud (12), and the pressure relief stud (12) will not fall off in the oil drain hole during pressure relief; The pressure relief stud (12) is provided with a pressure relief hole (101) and a pressure relief channel (102) which are interconnected. The pressure relief channel (102) is arranged along the axial direction of the pressure relief stud (12). The axis of the pressure relief hole (101) is arranged perpendicular to the axis of the pressure relief channel (102). The inner diameter of the pressure relief hole (101) is set to 2 mm, and the inner diameter of the pressure relief channel (102) is set to 2 mm. The length of the pressure relief stud (12) is less than or equal to the depth of the oil drain hole.
2. The pressure relief plug according to claim 1, characterized in that: One end of the pressure relief hole (101) passes through the side surface of the pressure relief stud (12), and the other end is connected to the pressure relief channel (102). When the pressure relief hole (101) is located outside the oil drain hole, the pressure container (100) can relieve pressure inside the pressure container (100) through the pressure relief channel (102) and the pressure relief hole (101).
3. The pressure relief plug according to claim 1, characterized in that: The pressure relief channel (102) is arranged through the side of the pressure relief stud (12) away from the pressure relief nut (11); when the pressure container (100) is relieved of pressure, the pressure relief channel (102) is connected to the interior of the pressure container (100).
4. The pressure relief plug according to claim 1, characterized in that: The pressure relief nut (11) and the pressure relief stud (12) are an integrated structure.
5. Double-barrel pressure device, characterized in that: It comprises the pressure relief plug as described in any one of claims 1 to 4, a pressure vessel (100) and a bracket (200), wherein two pressure vessels (100) are provided, the two pressure vessels (100) are arranged on the bracket (200) in parallel and at intervals, and each of the pressure vessels (100) is provided with one pressure relief plug.
6. The double-barrel pressure device according to claim 5, characterized in that The pressure relief plug is located at the bottom of the pressure container (100) and is used to seal the oil drain hole at the bottom of the pressure container (100) or to relieve pressure inside the pressure container (100).