Pressure vessel

Abstract

The pressure container comprises a container body and a sealing assembly, the container body comprises a container neck, at least two through holes are formed in the container neck, the sealing assembly comprises a sealing plug and a limiting piece, the sealing plug is located in the container neck and is in interference fit with the container neck, and the limiting piece is located in the container neck. Therefore, gas leakage can be effectively prevented, and the gas tightness of the pressure container is ensured. In addition, the limiting piece penetrates through the through hole to be clamped with the neck of the container and is located on the side, facing the outside of the container body, of the sealing plug, so that the limiting piece can limit movement of the sealing plug and prevent the sealing plug from falling off, and the sealing performance of the pressure container is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of container temperature measurement, concretely relates to a pressure vessel. BACKGROUND

[0002] As a key component of the power system of a spacecraft, a high-pressure pressure vessel will inevitably bear external thermal environmental load during the operation of a space engine, which causes the temperature of the pressure vessel shell to rise rapidly, and in turn causes the temperature and pressure of the internal high-pressure gas to rise. Once the safe allowable pressure value is exceeded, the safety factor and working reliability of the pressure vessel will be greatly reduced, which brings great safety hazards to the flight mission. Therefore, it is necessary to carry out external fire roasting or heating test research on the high-pressure pressure vessel during the trial production stage, and to monitor the temperature change of the internal pressure vessel in real time.

[0003] In order to improve the accuracy of measurement and obtain more accurate test data, it is necessary to seal the pressure vessel. However, as the temperature rises, the air pressure in the pressure vessel also becomes higher and higher, and the sealing difficulty also becomes greater and greater. Most of the current temperature measuring devices are connected and sealed with the pressure vessel through threads. In a high temperature and high pressure environment, the threaded seal may expand or deform, causing the thread gap to increase, thereby causing the sealing performance to decrease. Therefore, a new sealing device is urgently needed to seal the pressure vessel, so that the sealing device can ensure the air tightness of the high-pressure pressure vessel while avoiding falling off due to too high air pressure. SUMMARY

[0004] The utility model embodiment provides a kind of pressure vessel, by being provided with sealing plug and limiting piece in pressure vessel, to guarantee the air tightness of pressure vessel, and avoid the falling off of sealing plug.

[0005] A pressure vessel, the pressure vessel includes a container body and a sealing assembly, the container body is detachably connected with the sealing assembly;

[0006] The container body includes a container neck, and at least two through holes are provided on the container neck;

[0007] The sealing assembly includes a sealing plug and a limiting piece, the sealing plug is located in the container neck and is in interference fit with the container neck, and the limiting piece passes through the through hole and is clamped with the container neck;

[0008] The limiting piece is located on the side of the sealing plug facing the outside of the container body.

[0009] Optionally, the sealing assembly further includes a gasket, which is located between the limiting piece and the sealing plug and abuts against the limiting piece and the sealing plug, respectively.

[0010] Optionally, the pressure container further comprises a connecting rod, a plurality of connecting plates are arranged on the container neck, and the connecting plates are located outside the container neck and fixedly connected with the container neck.

[0011] The connecting plates and the limiting pieces are fixedly connected through the connecting rod.

[0012] Optionally, the container body further comprises a container mouth, the container mouth is located on the side of the container neck away from the container body, and the container mouth is fixedly connected with the container neck.

[0013] The sealing assembly further comprises a sealing cover, the sealing cover is a groove structure, the container mouth is embedded in the sealing cover and abuts against the sealing cover.

[0014] The connecting rod extends to the sealing cover and is fixedly connected with the sealing cover.

[0015] Optionally, the sealing assembly further comprises a sealing ring, the sealing ring is located between the container neck and the sealing plug.

[0016] Optionally, the through hole comprises a first through hole, a second through hole and a third through hole, and the limiting piece comprises a first limiting piece, a second limiting piece and a third limiting piece.

[0017] The first limiting piece is clamped with the container neck through the first through hole and the second through hole, the second limiting piece is clamped with the container neck through the first through hole and the third through hole, and the third limiting piece is clamped with the container neck through the second through hole and the third through hole.

[0018] Optionally, the pressure container further comprises a temperature measuring assembly, the temperature measuring assembly is sealingly connected with the sealing assembly, and the temperature measuring assembly is located inside the container body and passes through the sealing assembly.

[0019] Optionally, the temperature measuring assembly comprises a temperature measuring rod, four sensor assemblies, two supporting rods and a wire, the four sensor assemblies are connected with the temperature measuring rod, two of the sensor assemblies are connected through one of the supporting rods, and the other two of the sensor assemblies are connected through the other supporting rod.

[0020] The temperature measuring rod is provided with a wire channel, and the wire is located in the wire channel and electrically connected with the four sensor assemblies.

[0021] Optionally, the sensor assembly and the supporting rod are in a closed structure, and one end of the temperature measuring rod is closed in the container body.

[0022] Optionally, the container body has a filling and discharging valve, which is located at the bottom of the container body and fixedly connected with the container body.

[0023] Compared with the prior art, the technical scheme of the utility model has the following advantages:

[0024] The pressure container provided by the embodiment of the utility model comprises a container body and a sealing assembly, the container body comprises a container neck, at least two through holes are arranged on the container neck, the sealing assembly comprises a sealing plug and a limiting piece, the sealing plug is located inside the container neck and is in interference fit with the container neck, so that gas leakage can be effectively prevented and the air tightness of the pressure container is ensured.

[0025] The additional aspects and advantages of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1 is a front view of a pressure container provided by the embodiment of the utility model;

[0028] Figure 2 is a side view of a sealing assembly provided by the embodiment of the utility model;

[0029] Figure 3 is a side view of another sealing assembly provided by the embodiment of the utility model;

[0030] Figure 4 is Figure 2 a plan view of A-A in Fig.

[0031] Figure 5 is Figure 2 another plan view of A-A (without limiting piece).

[0032] REFERENCE NUMERALS:

[0033] Container body-10, container neck-101, through hole-1011, connecting plate-1012, first through hole-1013, second through hole-1014, third through hole-1015, container mouth-102, charge and discharge valve-103, sealing assembly-20, sealing plug-201, limiting piece-202, first limiting piece-2021, second limiting piece-2022, third limiting piece-2023, gasket-203, sealing cover-204, sealing ring-205, connecting rod-30, temperature measurement assembly-40, temperature measurement rod-401, wire channel-4011, sensor assembly-402, support rod-403, wire-404, data collector-50. DETAILED DESCRIPTION

[0034] The term "a plurality of" in the description and claims of the utility model means two or more. The terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0035] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled persons in the art without creative labor belong to the scope of protection of the present application. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0037] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] Reference Figure 1The utility model provides a pressure vessel, pressure vessel includes: container body 10 and sealing assembly 20, container body 10 with sealing assembly 20 can be dismantled and is connected,

[0039] Container body 10 includes container neck 101, and at least two through -holes 1011 are arranged on container neck 101,

[0040] Sealing assembly 20 includes sealing plug 201 and limit part 202, sealing plug 201 is located in container neck 101 and is with the interference fit of container neck 101, and limit part 202 passes through through -hole 1011 and is connected with container neck 101,

[0041] Limit part 202 is located at the side of sealing plug 201 towards the outside of container body 10.

[0042] The utility model discloses a pressure vessel, as shown in the figure, Figure 1 Pressure vessel includes container body 10 and sealing assembly 20, container body 10 includes container neck 101, and at least two through -holes 1011 are arranged on container neck 101, sealing assembly 20 includes sealing plug 201 and limit part 202, sealing plug 201 is located in container neck 101 and is with the interference fit of container neck 101, because sealing plug 201 adopts the interference fit with container neck 101, can effectively prevent gas leakage, ensure the sealing property of pressure vessel, in addition, because limit part 202 passes through through -hole 1011 and is connected with container neck 101, and limit part 202 is located at the side of sealing plug 201 towards the outside of container body 10, limit part 202 can limit the movement of sealing plug 201, prevents it from falling off, thereby effectively guarantee the sealing property of high -pressure pressure vessel.

[0043] The utility model discloses a pressure vessel, when limit part 202 passes through through -hole 1011 and is connected with container neck 101, limit part 202 can not pass through the positive center of container neck 101, because the positive center of container neck 101 still is provided with wire channel, therefore limit part 202 passes through through -hole 1011 should avoid the positive center position of container neck 101.

[0044] Optionally, as shown in the figure, Figure 1 Sealing assembly 20 still includes gasket 203, and gasket 203 is located between limit part 202 and sealing plug 201 and respectively with limit part 202 and sealing plug 201 abuts.

[0045] The utility model discloses a pressure vessel, as shown in the figure, Figure 1As shown, the sealing assembly 20 further comprises a gasket 203, which is located between the limiting member 202 and the sealing plug 201 and abuts against the limiting member 202 and the sealing plug 201 respectively. By arranging the gasket 203 between the limiting member 202 and the sealing plug 201, the pressure between the limiting member 202 and the sealing plug 201 can be evenly dispersed, so as to avoid stress concentration on the sealing plug 201. Meanwhile, since the gasket 203 abuts against the limiting member 202 and the sealing plug 201 respectively, the relative displacement between the sealing plug 201 and the limiting member 202 can be prevented, thereby improving the sealing effect of the sealing assembly 20.

[0046] In the pressure container, the sealing plug 201 is usually made of rubber material and is easy to deform, while the limiting member 202 is generally in a plate or rod structure and cannot completely cover the sealing plug 201. When the sealing plug 201 abuts against the limiting member 202, the part of the sealing plug 201 directly contacting the limiting member 202 is easy to form stress concentration, thereby damaging the sealing plug 201. In addition, when the covering range of the limiting member 202 is small and the gas pressure in the container is large, the sealing plug 201 is also easy to fall off the limiting member 202. At this time, the gasket 203 is arranged between the limiting member 202 and the sealing plug 201. The gasket 203 is generally a metal plate and has an area basically same as that of the sealing plug 201, so that the contact area between the sealing plug 201 and the gasket 203 is large and the pressure borne by the sealing plug 201 is small, and thus the sealing plug 201 is not easy to be damaged. Since the gasket 203 has a certain rigidity and is not easy to deform, the gasket 203 can be blocked by the limiting member 202, thereby avoiding the sealing plug 201 from falling off under high gas pressure.

[0047] Optionally, as shown in Figure 2 The pressure container further comprises a connecting rod 30. A plurality of connecting plates 1012 are arranged on the container neck 101 and located outside the container neck 101 and fixedly connected with the container neck 101.

[0048] The connecting plates 1012 and the limiting member 202 are fixedly connected through the connecting rod 30.

[0049] In the pressure container, as shown in Figure 2 The connecting plates 1012 are located outside the container neck 101 and fixedly connected with the container neck 101. The connecting rod 30 fixedly connects the connecting plates 1012 and the limiting member 202, thereby forming a stable support structure, which can effectively prevent the limiting member 202 from being displaced or loosened due to external force in the use process, thereby ensuring the sealing effect of the sealing assembly 20.

[0050] In the pressure container, the fixing connection of the connecting plate 1012 and the limiting piece 202 is mainly to limit the movement of the limiting piece 202 in the radial plane of the container body 10, to avoid the shaking of the limiting piece under the action of high-pressure gas or external force, thereby affecting the sealing effect of the sealing assembly 20, and therefore the connecting plate 1012 can be located on one side of the through hole 1011 close to the opening of the container body 10 or on the side of the through hole 1011 away from the opening of the container body 10, and only the fixing connection of the connecting plate 1012 and the limiting piece 202 can meet the above requirements.

[0051] In the pressure container, the connecting plate 1012 and the container neck 101 can be connected by welding or metal glue, so that fast and firm connection can be achieved. The connecting plate 1012 and the limiting piece 202 are fixedly connected by the connecting rod 30, and the common connection mode is bolt connection, bolt holes can be formed on the connecting plate 1012 and the limiting piece 202 respectively, so that the connecting plate 1012 and the limiting piece 202 are connected by the bolt rod.

[0052] Optionally, as shown in Figure 1 and Figure 2 , the container body 10 further comprises a container mouth 102, the container mouth 102 is located on the side of the container neck 101 away from the container body, and the container mouth 102 is fixedly connected with the container neck 101.

[0053] The sealing assembly 20 further comprises a sealing cover 204, the sealing cover 204 is a groove structure, the container mouth 102 is embedded in the sealing cover 204 and abuts against the sealing cover 204.

[0054] The connecting rod 30 extends to the sealing cover 204 and is fixedly connected with the sealing cover 204.

[0055] In the pressure container, as shown in Figure 1 and Figure 2 , the sealing cover 204 is a groove structure, the container mouth 102 is embedded in the sealing cover 204 and abuts against the sealing cover 204, and the embedded design can improve the convenience of installation. The connecting rod 30 extends to the sealing cover 204, and the connecting rod 30 is fixedly connected with the sealing cover 204, so that the connection between the entire sealing assembly 20 and the container body 10 is more firm, and the stability of the pressure container in a high-pressure or vibration environment is enhanced.

[0056] In the pressure container, the connecting rod 30 extends to the sealing cover 204 and is fixedly connected with the sealing cover 204, the connecting mode of the connecting rod 30 and the sealing cover 204 is generally bolt connection, bolt holes are arranged on the sealing cover 204, since the length of the connecting rod 30 is relatively long, the connecting rod 30 can also pass through the bolt holes on the sealing cover 204, so that the sealing cover 204, the limiting plate 202 and the connecting plate 1012 are connected together.

[0057] Optionally, as shown in Figure 1 , the sealing assembly further comprises a sealing ring 205, and the sealing ring 205 is located between the container neck 101 and the sealing plug 201.

[0058] In the pressure container, as shown in Figure 1 , the sealing assembly further comprises a sealing ring 205, and the sealing ring 205 is located between the container neck 101 and the sealing plug 201, since the sealing ring 205 is generally made of a material with elasticity, the sealing ring 205 can form an elastic seal between the container neck 101 and the sealing plug 201. This elastic seal can effectively fill the small gap between the container neck 101 and the sealing plug 201, further reducing the possibility of gas leakage, especially in a high-pressure or special gas environment, the sealing ring 205 can further improve the sealing performance of the pressure container.

[0059] Optionally, as shown in Figure 3 , Figure 4 and Figure 5 , the through hole 1011 comprises a first through hole 1013, a second through hole 1014 and a third through hole 1015, and the limiting piece 202 comprises a first limiting piece 2021, a second limiting piece 2022 and a third limiting piece 2023.

[0060] The first limiting piece 2021 passes through the first through hole 1013 and the second through hole 1014 and is clamped with the container neck 101, the second limiting piece 2022 passes through the first through hole 1013 and the third through hole 1015 and is clamped with the container neck 101, and the third limiting piece 2023 passes through the second through hole 1014 and the third through hole 1015 and is clamped with the container neck 101.

[0061] In the pressure container, as shown in Figure 3 , Figure 4 and Figure 5As shown, the first limiting member 2021 passes through the first through hole 1013 and the second through hole 1014 and is engaged with the container neck 101. The second limiting member 2022 passes through the first through hole 1013 and the third through hole 1015 and is engaged with the container neck 101. The third limiting member 2023 passes through the second through hole 1014 and the third through hole 1015 and is engaged with the container neck 101. Through the combination of multiple limiting members 202 and multiple through holes 1011, a multi-point fixing structure can be formed, which can effectively distribute the force on the limiting members 202 and avoid deformation or loosening of the limiting members 202 due to single-point force, thereby improving the stability of the sealing assembly 20. At the same time, under high pressure or vibration environment, the multi-point fixed limiting members 202 can also better resist the action of external forces, thereby ensuring the sealing performance and stability of the pressure vessel under extreme conditions. The first through hole 1013, the second through hole 1014, and the third through hole 1015 are the same size, differing only in their positions on the container neck 101. Figure 3 The first through hole 1013 and the second through hole 1014 marked in the text can also refer to the third through hole 1015.

[0062] In the pressure vessel of this embodiment, the number of through holes 1011 is at least two, and the number of limiting members 202 is at least one. The number of through holes 1011 should not be excessive, as a large number of through holes 1011 will affect the strength of the container neck 101 and may cause damage to the container neck 101. The number of limiting members 202 is not limited, as long as it does not affect the temperature measurement of the container body.

[0063] Optionally, such as Figure 1 As shown, the pressure vessel also includes a temperature measuring component 40, which is sealed to the sealing component 20. The temperature measuring component 40 is located inside the vessel body 10 and passes through the sealing component 20.

[0064] In the pressure vessel of this utility model embodiment, such as Figure 1 As shown, the pressure vessel also includes a temperature sensing component 40, which is located inside the vessel body 10 and passes through the sealing component 20. By installing the temperature sensing component 40 inside the pressure vessel, it can directly measure the temperature change inside the pressure vessel, thereby obtaining more accurate data, rather than relying solely on the temperature at the vessel opening or external temperature for estimation. Furthermore, the temperature sensing component 40 is sealed to the sealing component 20, ensuring the airtightness of the pressure vessel while measuring the temperature.

[0065] Optionally, such as Figure 1As shown, the temperature measuring assembly 40 comprises a temperature measuring rod 401, four sensor assemblies 402, two support rods 403, and a wire 404, the four sensor assemblies 402 are connected with the temperature measuring rod 401, two sensor assemblies 402 are connected through one support rod 403, and the other two sensor assemblies 402 are connected through the other support rod 403.

[0066] The wire channel 4011 is arranged in the temperature measuring rod 401, and the wire 404 is located in the wire channel 4011 and is electrically connected with the four sensor assemblies 402.

[0067] In the pressure container of the embodiment of the utility model, Figure 1 As shown, the temperature measuring assembly 40 comprises a temperature measuring rod 401, four sensor assemblies 402, two support rods 403, and a wire 404, and the sensor assemblies are connected with the wire 404 through the wire channel 4011, by distributing the four sensor assemblies 402 on the temperature measuring rod 401, the temperature of different positions in the pressure container can be measured, so that more comprehensive temperature distribution data can be provided, and the user can more accurately understand the thermal state in the pressure container. Two support rods 403 are used to connect two groups of sensor assemblies 402 respectively, so that the sensor assemblies 402 can be effectively supported, and displacement or damage of the sensor assemblies 402 in the pressure container due to vibration or impact can be prevented, so that the overall stability of the temperature measuring assembly 40 is improved. The wire 404 is arranged in the wire channel 4011, so that the wire 404 can be effectively protected from the influence of external environment (such as high temperature and corrosive gas), the risk of damage of the wire 404 is reduced, and the stability and reliability of the measurement signal are improved.

[0068] In the pressure container of the embodiment of the utility model, Figure 1 As shown, when the sensor assembly 402 collects the temperature data in the container, the signal will be transmitted through the wire 404, the wire 404 passes through the inner cavity of the sensor assembly 402 and the wire channel 4011, and finally connects with the data collector 50 of the external system, so that the analog signal collected by the sensor assembly 402 is converted into temperature data for storage and display. The sensor assembly 402 and the support rod 403 are in a folded state when not in use, and when entering the high-pressure pressure container, the sensor assembly 402 and the support rod 403 in the folded state will be opened, and the sensor assembly 402 will be opened to a certain angle with the temperature measuring rod 401. In addition, the number of sensor assemblies 402 and support rods 403 is not limited, and the number of sensor assemblies 402 is at least one.

[0069] Optionally, as shown in the figure, Figure 1 The sensor assembly 402 and the support rod 403 are in a closed structure, and one end of the temperature measuring rod 401 is closed in the container body 10.

[0070] The pressure container in the embodiment of the utility model, as shown in Figure 1 The sensor assembly 402 and the supporting rod 403 are in a closed structure, which can effectively prevent the gas inside the pressure container from leaking through the sensor assembly 402 or the supporting rod 403, thereby ensuring the sealing property of the pressure container, and the closed structure of the sensor assembly 402 and the supporting rod 403 can reduce heat loss, and ensure that the temperature measuring assembly 40 can more accurately measure the temperature inside the pressure container. The one end of the temperature measuring rod 401 inside the container body 10 is closed, which can also prevent the gas inside the pressure container from leaking through the temperature measuring rod 401, thereby ensuring the sealing property of the pressure container.

[0071] Optionally, as shown in Figure 1 The container body 10 comprises a filling and discharging valve 103, which is located at the bottom of the container body 10 and is fixedly connected with the container body 10.

[0072] The pressure container in the embodiment of the utility model, as shown in Figure 1 The filling and discharging valve 103 is located at the bottom of the pressure container, which can realize the functions of rapid inflation and deflation, thereby effectively reducing the inflation and deflation time and improving the use efficiency of the pressure container.

[0073] In the pressure container in the embodiment of the utility model, after the temperature measuring assembly 40 is installed, the gas is filled at the inflation port of the gas filling and discharging valve 103, after the inflation process is completed, the filling and discharging valve 103 is closed, the air tightness of each part in the high-pressure pressure container is checked, and after confirming that the sealing is good, heating is started, and the temperature change in the container is monitored. After the temperature measurement is completed, the gas is discharged through the filling and discharging valve 103, after the deflation is completed, the sensor assembly 402 and the supporting rod 403 are synchronously retracted to the two sides of the temperature measuring rod 401, and finally the temperature measuring assembly 40 is taken out from the container port, thereby completing the whole temperature measurement process.

[0074] Finally, it should be noted that in this document, the terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

Claims

1. A pressure container, characterized in that, the pressure container comprises a container body (10) and a sealing assembly (20), the container body (10) is detachably connected with the sealing assembly (20); the container body (10) comprises a container neck (101), at least two through holes (1011) are arranged on the container neck (101); the sealing assembly (20) comprises a sealing plug (201) and a limiting piece (202), the sealing plug (201) is located in the container neck (101) and is in interference fit with the container neck (101), the limiting piece (202) is clamped with the container neck (101) through the through hole (1011); the limiting piece (202) is located on the side of the sealing plug (201) facing the outside of the container body (10).

2. The pressure container of claim 1, characterized in that, the sealing assembly (20) further comprises a gasket (203), the gasket (203) is located between the limiting piece (202) and the sealing plug (201) and abuts with the limiting piece (202) and the sealing plug (201) respectively.

3. The pressure container of claim 2, characterized in that, the pressure container further comprises a connecting rod (30), a plurality of connecting plates (1012) are arranged on the container neck (101), the connecting plates (1012) are located on the outside of the container neck (101) and are fixedly connected with the container neck (101); the connecting plates (1012) and the limiting piece (202) are fixedly connected through the connecting rod (30).

4. The pressure container of claim 3, characterized in that, the container body (10) further comprises a container mouth (102), the container mouth (102) is located on the side of the container neck (101) away from the container body, and the container mouth (102) is fixedly connected with the container neck (101); the sealing assembly (20) further comprises a sealing cover (204), the sealing cover (204) is a groove structure, the container mouth (102) is embedded in the sealing cover (204) and abuts with the sealing cover (204); the connecting rod (30) extends to the sealing cover (204) and is fixedly connected with the sealing cover (204).

5. The pressure container of claim 1, characterized in that, the sealing assembly further comprises a sealing ring (205), the sealing ring (205) is located between the container neck (101) and the sealing plug (201).

6. The pressure container of claim 1, characterized in that, the through hole (1011) comprises a first through hole (1013), a second through hole (1014) and a third through hole (1015), the limiting piece (202) comprises a first limiting piece (2021), a second limiting piece (2022) and a third limiting piece (2023). The first limiting piece (2021) passes through the first through hole (1013) and the second through hole (1014) and is clamped with the container neck (101), the second limiting piece (2022) passes through the first through hole (1013) and the third through hole (1015) and is clamped with the container neck (101), and the third limiting piece (2023) passes through the second through hole (1014) and the third through hole (1015) and is clamped with the container neck (101).

7. The pressure vessel of claim 1, wherein, The pressure vessel further comprises a temperature measuring assembly (40), the temperature measuring assembly (40) is in sealing connection with the sealing assembly (20), and the temperature measuring assembly (40) is located inside the container body (10) and passes through the sealing assembly (20).

8. The pressure vessel of claim 7, wherein, The temperature measuring assembly (40) comprises a temperature measuring rod (401), four sensor assemblies (402), two support rods (403) and wires (404), the four sensor assemblies (402) are connected with the temperature measuring rod (401), two sensor assemblies (402) are connected through one support rod (403), and the other two sensor assemblies (402) are connected through the other support rod (403). The temperature measuring rod (401) is provided with a wire channel (4011), and the wires (404) are located in the wire channel (4011) and are electrically connected with the four sensor assemblies (402).

9. The pressure vessel of claim 8, wherein, The sensor assembly (402) and the support rod (403) are in a closed structure, and one end of the temperature measuring rod (401) located in the container body (10) is closed.

10. The pressure vessel of claim 1, wherein, The container body (10) is provided with a filling and discharging valve (103), and the filling and discharging valve (103) is located at the bottom of the container body (10) and is fixedly connected with the container body (10).

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