pressure vessels

Abstract

The present invention discloses a pressure vessel comprising a tank body, a support portion, a support seat, a heat insulating member, and a friction reducing member. The support portion is disposed on the outer periphery of the tank body, the support seat is disposed on one side of the tank body, the support seat is provided with a groove extending along the width of the support seat, the heat insulating member and the friction reducing member are both disposed within the groove of the support seat, the friction reducing member is disposed above the heat insulating member, and the support portion is disposed above the friction reducing member so that the support seat supports the tank body via the support portion. The pressure vessel of the present invention has the advantages of a simple structure, a long service life, and low cost.

Description

Technical Field

[0001] The present invention relates to the field of underground nuclear power plants, and in particular to a pressure vessel. Background Art

[0002] The reactors used in nuclear power plants mainly include light water reactors (pressurized water reactors and boiling water reactors), heavy water reactors, gas-cooled reactors and fast reactors. The reactor pressure vessel (RPV) is the core of a nuclear power plant and is usually the determining factor in the life of a nuclear power plant.

[0003] In the related art, the pressure vessel is not set up properly, has a short service life and is costly. Summary of the Invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] In related technologies, the load-bearing support structure of the high-temperature gas-cooled reactor pressure vessel suffers from an inadequate structural design. This results in a large heat transfer area, leading to high heat transfer to the concrete and requiring a specialized cooling system, which compromises safety and affordability. Furthermore, stress is concentrated around the pressure vessel lugs, leaving room for improvement. Furthermore, the lack of friction-reducing measures results in significant friction in the support structure due to thermal expansion and contraction during heating and cooling of the pressure vessel.

[0006] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a pressure vessel with low cost and simple structure.

[0007] The pressure vessel of an embodiment of the present invention includes: a tank body; a support portion, which is arranged on the outer peripheral side of the tank body; a support seat, which is arranged on one side of the tank body and is provided with a groove extending along the width direction of the support seat; a heat insulation member and a friction reducing member, which are both arranged in the groove of the support seat, the friction reducing member is arranged above the heat insulation member, and the support portion is arranged on the friction reducing member, so that the support seat supports the tank body through the support portion.

[0008] The pressure vessel of the embodiment of the present invention is provided with a support portion, a support seat, a thermal insulation member and a friction reducing member, so that the tank body is installed on the support seat through the support portion, and the friction reducing member can reduce the friction between the support portion and the support seat when the tank body expands and contracts due to heat and cold, thereby increasing the service life of the support portion and the support seat. In addition, the thermal insulation member reduces the temperature transferred from the tank body to the support seat, and there is no need to set up a separate cooling system for the support seat, thereby reducing the processing and manufacturing cost of the pressure vessel.

[0009] In some embodiments, the support portion includes a support rod and multiple support plates, the support rod is arranged on the outer peripheral side of the tank body, and the multiple support plates are arranged at circumferential intervals along the support rod, one side of the installation is connected to the outer peripheral side of the tank body, and the other side of the support plate is connected to the outer peripheral side of the support rod.

[0010] In some embodiments, the support seat includes a first support sub-seated and a second support sub-seated, the first support sub-seated is made of concrete, the first support sub-seated is arranged on one side of the tank body, the second support sub-seated includes a first part and a second part, at least part of the first part is passed through the first support sub-seated, the second part is connected to the first part and is arranged on the side of the first support sub-seated adjacent to the tank body, and the groove is formed at the upper end of the second part.

[0011] In some embodiments, the first part includes a first plate, a second plate and a plurality of fasteners, the first plate and the second plate are respectively arranged on both sides of the first support sub-base, and the plurality of fasteners are passed through the first plate, the second plate and the first support sub-base so that the first plate and the second plate can be installed on the first support sub-base through the fasteners, the second part includes a first connecting plate, a second connecting plate, a third connecting plate and a mounting seat, the first connecting plate and the second connecting plate are both connected to the second plate, the first connecting plate and the second connecting plate are spaced apart along the length direction of the first support sub-base, the third connecting plate is arranged above the first connecting plate and the second connecting plate, the mounting seat is arranged above the third connecting plate, and the groove is formed on the third connecting plate.

[0012] In some embodiments, the mounting seat includes a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the first mounting plate and the second mounting plate are arranged on the third connecting plate with relative spacing along the length direction of the first supporting sub-base, the third mounting plate is arranged on the third connecting plate and the two ends of the third mounting plate are respectively connected to the first mounting plate and the second mounting plate, the third mounting plate extends in the up and down directions, the fourth mounting plate is arranged above the third mounting plate, the two sides of the fourth mounting plate are respectively connected to the first mounting plate and the second mounting plate, and the fourth mounting plate extends along the length direction of the first supporting sub-base, and the fourth mounting plate, the second mounting plate and the first mounting plate define the groove.

[0013] In some embodiments, the friction reducing member includes a third plate and a friction reducing medium. The third plate is provided with a plurality of mounting grooves, which are spaced apart on the third plate. The friction reducing medium is filled in the mounting grooves.

[0014] In some embodiments, the pressure vessel further includes a detection component, which is disposed in the first support sub-base to detect the temperature in the first support sub-base.

[0015] In some embodiments, the pressure vessel further includes a mounting tube, at least a portion of which passes through the first supporting sub-base, and the detection assembly is disposed on the mounting tube.

[0016] In some embodiments, the pressure container further includes a heat-insulating medium, and the heat-insulating medium is filled between the groove and the support member.

[0017] In some embodiments, there are multiple support parts and multiple support seats, the multiple support parts are arranged at intervals along the circumference of the tank body, and the multiple support seats and the support parts are arranged on the outer circumference of the tank body in a one-to-one correspondence. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a pressure vessel according to an embodiment of the present invention.

[0019] Figure 2 It is a right side view of the pressure vessel of the embodiment of the present invention with the tank body removed.

[0020] Figure 3 It is a structural schematic diagram of the tank body and the support portion of the pressure vessel according to an embodiment of the present invention.

[0021] Figure 4 This is a side view of the tank body and support portion of the pressure vessel according to an embodiment of the present invention.

[0022] Figure 5 Schematic diagram of the structure of the friction reducing member of the pressure vessel according to the embodiment of the present invention.

[0023] Reference numerals:

[0024] Pressure vessel 100;

[0025] Tank body 1; support portion 2; support rod 21; support plate 22;

[0026] Support base 3; first support sub-base 31;

[0027] Second support member 32; first portion 321; first plate 3211; second plate 3212; fastener 3213; second portion 322; first connecting plate 3221; second connecting plate 3222; third connecting plate 3223; mounting base 3224; first mounting plate 32241; second mounting plate 32242; third mounting plate 32243; fourth mounting plate 32244; fifth mounting plate 32245; sixth mounting plate 32246; groove 33;

[0028] Thermal insulation 4;

[0029] Friction reducing member 5; third plate 51; mounting groove 52; detection assembly 6; mounting tube 7. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] A pressure vessel according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] like Figure 1-5 As shown, the pressure vessel 100 according to an embodiment of the present invention includes a tank body 1, a support portion 2, a support seat 3, a heat insulating member 4 and a friction reducing member 5.

[0033] The support portion 2 is provided on the outer peripheral side of the tank body 1. Specifically, Figure 1 As shown, the support portion 2 is fixed to the outer peripheral side of the tank body 1 by welding.

[0034] The support base 3 is provided on one side of the tank body 1, and the support base 3 is provided with a width direction (such as Figure 1 The groove 33 extends in the left and right directions as shown. Figure 1 As shown, the upper end surface of the support base 3 is provided with a groove 33 which penetrates the support base 3 along the left-right direction.

[0035] The heat insulating member 4 and the friction reducing member 5 are both arranged in the groove 33 of the support seat 3, the friction reducing member 5 is arranged above the heat insulating member 4, and the support portion 2 is arranged above the friction reducing member 5, so that the support seat 3 supports the tank body 1 through the support portion 2. Specifically, Figure 1 As shown, the heat insulation member 4 and the friction reducing member 5 are both arranged in the groove 33, and the friction reducing member 5 is arranged above the heat insulation member 4, and the support portion 2 is passed through the groove 33 and is located above the friction reducing member 5. Thus, the tank body 1 is supported on the support seat 3 through the support portion 2, and the friction between the support seat 3 and the support portion 2 is reduced by the friction reducing member 5, and the heat in the tank body 1 is reduced and transferred to the support seat 3 by the heat insulation member 4.

[0036] The pressure vessel 100 of the embodiment of the present invention is provided with a support portion 2, a support seat 3, a thermal insulation member 4 and a friction reducing member 5, so that the tank body 1 is installed on the support seat 3 through the support portion 2. The friction reducing member 5 can reduce the friction between the support portion 2 and the support seat 3 when the tank body 1 expands and contracts due to heat, thereby increasing the service life of the support portion 2 and the support seat 3. In addition, the thermal insulation member 4 reduces the temperature transmitted from the tank body 1 to the support seat 3, and there is no need to set up a separate cooling system for the support seat 3, thereby reducing the processing and manufacturing cost of the pressure vessel 100.

[0037] In some embodiments, the support portion 2 includes a support rod 21 and a plurality of support plates 22. The support rod 21 is provided on the outer peripheral side of the tank body 1. The plurality of support plates 22 are spaced apart along the circumference of the support rod 21. One side of the support plate 22 is connected to the outer peripheral side of the tank body 1, and the other side of the support plate 22 is connected to the outer peripheral side of the support rod 21. Specifically, Figure 3-4 As shown, the support rod 21 can be a hollow steel structure, and the number of support plates 22 is 4. One end of the support rod 21 is fixed to the outer peripheral side of the tank body 1 by welding, wherein two support plates 22 are arranged in parallel above the support rod 21 at intervals in the front-to-back direction, wherein the other two support rods 21 are arranged on both sides of the support rod 21 in the front-to-back direction, and one side of each support plate 22 is welded to the outer peripheral surface of the support rod 21, and the left side of each support plate 22 is welded to the outer peripheral surface of the tank body 1, and the support rod 21 is supported on the friction reducing part 5. Multiple support plates 22 can improve the supporting capacity of the support part 2, making the setting of the support part 2 more reasonable.

[0038] In some embodiments, the support base 3 includes a first support sub-base 31 and a second support sub-base 32. The first support sub-base 31 is cast by concrete and is arranged on one side of the tank body 1. The second support sub-base 32 includes a first portion 321 and a second portion 322. At least part of the first portion 321 is inserted into the first support sub-base 31. The second portion 322 is connected to the first portion 321 and is arranged on a side of the first support sub-base 31 adjacent to the tank body 1. The groove 33 is formed at the upper end of the second portion 322. Specifically, as shown in FIG. Figure 1-2 As shown, the first support sub-base 31 is a support column made of cast concrete, the first part 321 of the second support sub-base 32 is connected to the first support sub-base 31, the second part 322 of the second support sub-base 32 is arranged on the right side of the first support sub-base 31, and the groove 33 is formed at the upper end of the second part 322, so that the setting of the support base 3 is more reasonable.

[0039] In some embodiments, the first portion 321 includes a first plate 3211, a second plate 3212, and a plurality of fasteners 3213. The first plate 3211 and the second plate 3212 are respectively arranged on both sides of the first support sub-base 31. The plurality of fasteners 3213 are passed through the first plate 3211, the second plate 3212, and the first support sub-base 31. The plurality of fasteners 3213 are spaced apart in the up and down directions. Specifically, Figure 1As shown, the first plate 3211 is arranged on the left side of the first support sub-base 31, and the second plate 3212 is arranged on the right side of the first support sub-base 31. The first plate 3211 and the second plate 3212 are both vertical plates. The fastener 3213 includes a threaded rod and a nut, and the fastener 3213 is passed through the first plate 3211, the second plate 3212 and the first support sub-base 31. The two ends of the fastener 3213 are passed out from the first plate 3211 and the second plate 3212 and cooperate with the nuts, so that the first plate 3211 and the second plate 3212 are fixed on the left and right sides of the first support sub-base 31 through the fastener 3213.

[0040] In some embodiments, the second portion 322 includes a first connecting plate 3221, a second connecting plate 3222, a third connecting plate 3223 and a mounting seat 3224. The first connecting plate 3221 and the second connecting plate 3222 are both connected to the second plate 3212. The first connecting plate 3221 and the second connecting plate 3222 are connected along the length direction of the first supporting sub-base 31 (such as Figure 2 The third connecting plate 3223 is arranged above the first connecting plate 3221 and the second connecting plate 3222, the mounting seat 3224 is arranged above the third connecting plate 3223, and the groove 33 is formed on the third connecting plate 3223. Specifically, as shown Figure 1-2 As shown, the first connecting plate 3221 and the second connecting plate 3222 are both vertical plates and are arranged in parallel at intervals along the front-to-back direction, and the left side of the first connecting plate 3221 and the left side of the second connecting plate 3222 are welded to the right side of the second plate 3212, and the third connecting plate 3223 is a horizontal plate and is welded above the first connecting plate 3221 and the second connecting plate 3222. As a result, the first connecting plate 3221, the second connecting plate 3222 and the third connecting plate 3223 roughly form a "Π" shape structure, the mounting seat 3224 is welded above the third connecting plate 3223, and the groove 33 is formed above the mounting seat 3224, thereby improving the bearing capacity of the second support sub-base 32 and extending the service life of the second support sub-base 32.

[0041] In some embodiments, the outer peripheral surface of the third connecting plate 3223 is provided with a heat-insulating layer (not shown in the figure), thereby further preventing the heat of the tank body 1 from being transferred to the support base 3.

[0042] In some embodiments, the mounting base 3224 includes a first mounting plate 322441, a second mounting plate 32242, a third mounting plate 32243 and a fourth mounting plate 32244. The first mounting plate 322441 and the second mounting plate 32242 are arranged along the length direction of the first supporting sub-base 31 (eg, Figure 1The front and rear directions shown in the figure are relatively arranged on the third connecting plate 3223, the third mounting plate 32243 is arranged on the third connecting plate 3223 and the two ends of the third mounting plate 32243 are respectively connected to the first mounting plate 322441 and the second mounting plate 32242, the third mounting plate 32243 extends in the up and down directions, the fourth mounting plate 32244 is arranged above the third mounting plate 32243, the two sides of the fourth mounting plate 32244 are respectively connected to the first mounting plate 322441 and the second mounting plate 32242, and the fourth mounting plate 32244 extends along the length direction of the first support sub-base 31, and the fourth mounting plate 32244, the second mounting plate 32242 and the first mounting plate 322441 define a groove 33.

[0043] Specifically, if Figure 1-2 As shown, the first mounting plate 322441 and the second mounting plate 32242 are vertical plates and are spaced apart and arranged in parallel along the front-to-back direction. The lower end of the first mounting plate 322441 and the lower end of the second mounting plate 32242 are both welded to the third connecting plate 3223. The third mounting plate 32243 is a horizontal plate and the lower end of the third mounting plate 32243 is welded to the third connecting plate 3223. The front side of the third mounting plate 32243 is welded to the first mounting plate 322441, and the rear side of the third mounting plate 32243 is welded to the second mounting plate 32242. The height of the third mounting plate 32243 is lower than that of the first mounting plate 322441 and the third mounting plate 32242. The height of the second mounting plate 32242, the fourth mounting plate 32244 is a horizontal plate and is welded above the third mounting plate 32243, and the fourth mounting plate 32244 extends in the left and right directions, the front side of the fourth mounting plate 32244 is welded to the first connecting plate 3221, the rear side of the fourth mounting plate 32244 is welded to the second connecting plate 3222, and the upper end surface of the fourth mounting plate 32244 is lower than the upper end surface of the first mounting plate 322441 and the upper end surface of the second mounting plate 32242, thereby, the upper end surfaces of the first mounting plate 322441, the second mounting plate 32242 and the fourth mounting plate 32244 define a groove 33.

[0044] In some embodiments, the mounting seat 3224 also includes a fifth mounting plate 32245 and a sixth mounting plate 32246, and the fifth mounting plate 32245 and the sixth mounting plate 32246 are vertical plates, and the lower end surface of the fifth mounting plate 32245 and the lower end surface of the sixth mounting plate 32246 are both welded to the upper end surface of the third connecting plate 3223, and the fifth mounting plate 32245 is located on the front side of the first mounting plate 322441 and is welded to the first mounting plate 322441, and the sixth mounting plate 32246 is located on the rear side of the second mounting plate 32242 and is welded to the second mounting plate 32242. Thus, the stability of the mounting seat 3224 is increased by the fifth mounting plate 32245 and the sixth mounting plate 32246.

[0045] In some embodiments, there may be multiple third mounting plates 32243 , and the multiple third mounting plates 32243 are spaced apart in the front-to-back direction, thereby further improving the stability of the mounting seat 3224 .

[0046] In some embodiments, the friction reducing member 5 includes a third plate 51 and a friction reducing medium (not shown in the figure), and the third plate 51 is provided with a plurality of mounting grooves 52, which are arranged at intervals on the third plate 51, and the friction reducing medium is filled in the mounting grooves 52. Specifically, Figure 5 As shown, the third plate 51 is a reinforced plate with a grid structure, and the friction-reducing medium is graphite. The friction-reducing medium is laid on the third plate 51, thereby reducing the friction between the support member and the support seat 3 and improving the service life of the support seat 3.

[0047] In some embodiments, the pressure vessel 100 further includes a detection assembly 6, which is disposed in the first support sub-base 31 to detect the temperature in the first support sub-base 31. Specifically, Figure 1 As shown, the detection component 6 is a temperature sensor and is arranged in the first support sub-base 31, so that the temperature of the concrete in the first support sub-base 31 is detected by the detection component 6. When the detection component 6 detects that the temperature in the first support sub-base 31 is high, it can remind the maintenance personnel that the tank body 1 needs to be inspected.

[0048] In some embodiments, the pressure vessel 100 further includes a mounting tube 7, at least a portion of which is disposed within the first support sub-base 31, and the detection assembly 6 is disposed on the mounting tube 7. Specifically, Figure 1 As shown, the right section of the mounting tube 7 is passed through the first support sub-base 31 , and the detection component 6 is installed at the right end of the mounting tube 7 . The mounting tube 7 and the detection component 6 are both embedded in the concrete, thereby providing an installation foundation for the detection component 6 .

[0049] In some embodiments, the pressure vessel 100 further includes a heat-insulating medium (not shown in the figures), which is filled between the groove 33 and the support member. Specifically, the heat-insulating medium is heat-insulating mud, which can be filled between the groove 33 and the support member. The heat-insulating medium wraps the entire support rod 21 of the support member, thereby reducing the heat transferred from the tank body 1 to the support base 3.

[0050] In some embodiments, there are multiple support parts 2 and multiple support seats 3, and the multiple support parts 2 are arranged at intervals along the circumference of the tank body 1. The multiple support seats 3 are arranged on the outer circumference of the tank body 1 in a one-to-one correspondence with the support parts 2. In this way, the tank body 1 can be supported on the support seats 3 by the support parts 2 and the support seats 3.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 understood as limiting the present invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0055] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0056] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A pressure vessel, characterized in that: include: Tank; a support portion, the support portion being provided on the outer circumference of the tank body; A support seat, the support seat is arranged on one side of the tank body, and the support seat is provided with a groove extending along the width direction of the support seat; A heat insulating member and a friction reducing member, wherein the heat insulating member and the friction reducing member are both arranged in the groove of the support seat, the friction reducing member is arranged above the heat insulating member, and the support portion is arranged above the friction reducing member, so that the support seat supports the tank body through the support portion; The support portion includes a support rod and a plurality of support plates, wherein the support rod is provided on the outer peripheral side of the tank body, and the plurality of support plates are arranged at intervals along the circumference of the support rod, one side of the support plate is connected to the outer peripheral side of the tank body, and the other side of the support plate is connected to the outer peripheral side of the support rod, and the support rod is supported on the friction reducing member; The support base includes a first support sub-base and a second support sub-base, the first support sub-base is cast by concrete, the first support sub-base is arranged on one side of the tank body, the second support sub-base includes a first part and a second part, at least a part of the first part is passed through the first support sub-base, the second part is connected to the first part and is arranged on a side of the first support sub-base adjacent to the tank body, and the groove is formed at the upper end of the second part; It also includes a heat-insulating medium, which is filled between the groove and the support member, and the heat-insulating medium wraps the support rod of the entire support member.

2. The pressure vessel according to claim 1, characterized in that The first part includes a first plate, a second plate and a plurality of fasteners, wherein the first plate and the second plate are respectively arranged on both sides of the first supporting sub-base, and the plurality of fasteners are passed through the first plate, the second plate and the first supporting sub-base so as to mount the first plate and the second plate on the first supporting sub-base through the fasteners. The second part includes a first connecting plate, a second connecting plate, a third connecting plate and a mounting seat. The first connecting plate and the second connecting plate are both connected to the second plate. The first connecting plate and the second connecting plate are spaced apart along the length direction of the first supporting sub-base. The third connecting plate is arranged above the first connecting plate and the second connecting plate. The mounting seat is arranged above the third connecting plate, and the groove is formed on the third connecting plate.

3. The pressure vessel according to claim 2, characterized in that The mounting seat includes a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate, the first mounting plate and the second mounting plate being arranged on the third connecting plate relative to each other along the length direction of the first supporting sub-base, the third mounting plate being arranged on the third connecting plate and the two ends of the third mounting plate are respectively connected to the first mounting plate and the second mounting plate, the third mounting plate extends in the up and down directions, the fourth mounting plate is arranged above the third mounting plate, the two sides of the fourth mounting plate are respectively connected to the first mounting plate and the second mounting plate, and the fourth mounting plate extends along the length direction of the first supporting sub-base, and the fourth mounting plate, the second mounting plate and the first mounting plate define the groove.

4. The pressure vessel according to claim 1, wherein The friction reducing member includes a third plate and a friction reducing medium. The third plate is provided with a plurality of mounting grooves, which are arranged at intervals on the third plate. The friction reducing medium is filled in the mounting grooves.

5. The pressure vessel according to claim 1, wherein: It also includes a detection component, which is arranged in the first supporting sub-base to detect the temperature in the first supporting sub-base.

6. The pressure vessel according to claim 5, characterized in that It also includes a mounting tube, at least a portion of which passes through the first supporting sub-base, and the detection component is arranged on the mounting tube.

7. The pressure vessel according to any one of claims 1 to 6, characterized in that: There are a plurality of support parts and a plurality of support seats. The plurality of support parts are arranged at intervals along the circumference of the tank body, and the plurality of support seats and the support parts are arranged on the outer circumference of the tank body in a one-to-one correspondence.

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