Pressure vessel tank

Abstract

The utility model provides a pressure vessel storage tank, which includes a storage tank body, the storage tank body includes a cylinder and a cover connected by welding, and the pressure vessel storage tank also includes an annular liner, the annular liner is located inside the pressure vessel storage tank, and the outer surface shape and size of the annular liner match the inner surface shape and size of the storage tank body at the connection between the cylinder and the cover; at the connection between the cylinder and the cover, the cylinder is welded to the annular liner; the projection of the cylinder and the cover along the radial direction of the pressure vessel storage tank is within the projection range of the annular liner along the horizontal direction. By arranging the annular liner inside the pressure vessel storage tank, the annular liner is welded to the cylinder or the cover, and there is a gap between the annular liner and the storage tank body, the gap can accommodate the welding slag generated in the process of welding the cylinder and the cover, and the annular liner covers the weld and realizes the shielding of the welding slag or welding color, avoiding the formation of welding slag, welding color, oxides and other impurities inside.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-stabilizing storage, in particular to a pressure container storage tank. Background Art

[0002] Pressure vessel storage tanks are equipment specially used to store gas and also play a role in stabilizing system pressure. Pressure vessel storage tanks can be divided into carbon steel pressure vessel storage tanks, stainless steel pressure vessel storage tanks, low alloy steel storage tanks, etc. according to different materials.

[0003] The tank of a pressure vessel or pressure vessel is generally composed of parts and components such as the cylinder, head, flange, pipe, sealing element and support. In addition, it is also equipped with safety devices, table calculations and internal parts to complete different production process functions.

[0004] The main body of the current pressure vessel storage tank, that is, the cylinder and the two end heads are connected by welding. The conventional manufacturing process is as follows: Step 1, the cylinder is welded to one end head, and all welding positions inside and outside are polished to remove welding slag, welding color, oxides and other impurities. Step 2, all external pipes are welded, and all welding positions inside and outside are polished to remove welding slag, welding color, oxides and other impurities. Step 3, the cylinder is welded to the other end head, and welding slag, welding color, oxides and other impurities are cleaned. Due to this step, the tank body has been closed, and welding slag, welding color, oxides and other impurities are left inside the tank body. The cleaning process is complicated and inefficient.

[0005] Specifically, there are two conventional cleaning methods for cleaning the remaining welding slag, welding color, oxides and other impurities in the third step: (1) Add a manhole to the tank body, enter the tank body, and perform surface treatment such as grinding or sandblasting to treat the welding parts and remove welding slag, welding color, oxides and other impurities. (2) If it is not possible to add a manhole to the tank body, chemical methods such as pickling and passivation are required to remove internal welding slag, welding color, oxides and other impurities. The above two cleaning methods increase the equipment manufacturing process, equipment manufacturing cost, enterprise labor cost expenditure, etc., and reduce the market competitiveness of the enterprise. Utility Model Content

[0006] The technical problem of the utility model is to overcome the defects of the existing pressure vessel storage tank in the prior art that welding slag, welding color, oxides and other impurities exist, and provide a pressure vessel storage tank.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] A pressure vessel storage tank, comprising a storage tank body, the storage tank body comprising a cylinder body and a cover connected by welding, the pressure vessel storage tank further comprising an annular liner, the annular liner is located inside the pressure vessel storage tank, and the outer surface shape and size of the annular liner match the inner surface shape and size of the storage tank body at the connection between the cylinder body and the cover;

[0009] At the connection between the cylinder and the cover, one of the cylinder and the cover is welded to the annular liner; the projections of the cylinder and the cover along the radial direction of the pressure vessel tank are within the projection range of the annular liner along the horizontal direction.

[0010] By arranging an annular liner inside the tank body, one of the cylinder and the cover is welded to the annular liner, and since the projection of the cylinder and the cover in the radial direction is within the projection range of the annular liner, that is, there is a gap between the annular liner and the tank body, and the gap extends from the connection between the cylinder or the cover and the annular liner through the weld between the cylinder and the cover to the cover or cylinder that is not connected to the annular liner. When welding and assembling the pressure vessel tank, the annular liner can be welded to the cylinder or the cover first, and the welding slag, welding color, oxides and other impurities at the welding place can be polished inside and outside to clean the welding place between the annular liner and the tank body, and then the cylinder and the cover can be welded. Since there is a gap between the annular liner and the tank body, when the cylinder and the cover are welded, the gap can accommodate the welding slag generated during the welding process of the cylinder and the cover. The welding slag flows into the gap and fills the gap so that the annular liner, the cylinder and the cover form a whole. The annular liner on the inner side of the tank body covers the weld to shield the welding slag, so that there is no welding slag, welding color, oxides and other impurities inside the pressure vessel tank. The pressure vessel tank has a simple structure, a simple welding process and high manufacturing efficiency.

[0011] Preferably, the sealing cover comprises a first sealing cover and a second sealing cover respectively connected to the two ends of the cylinder body, and the number of the annular lining plates is two, one of which is correspondingly arranged at the connection between the first sealing cover and the cylinder body, and the other annular lining plate is correspondingly arranged at the connection between the second sealing cover and the cylinder body.

[0012] By arranging annular lining plates at both the first cover and the second cover, no welding slag will appear inside the pressure vessel storage tank when welding the first cover and the cylinder body and the second cover and the cylinder body.

[0013] Preferably, the cylinder is connected to the annular liner by welding.

[0014] Since the volume and weight of the cylinder are greater than the cover, it is more convenient to weld the cylinder to the annular liner and then align the lighter cover with the cylinder and the annular liner, compared with the solution of welding the cover to the annular liner.

[0015] Preferably, along the axial direction of the pressure vessel storage tank, the center of the weld between the cylinder and the cover is at the same position as the center of the annular liner.

[0016] By setting the center of the annular lining plate to be the same as the center of the weld, the width of the annular lining plate protruding toward both ends relative to the weld is also the same, so that the structure at the annular lining plate is more beautiful.

[0017] Preferably, along the width direction of the annular liner, the spacing between the non-welded end of the annular liner and the welds of the cylinder and the cover is Z, and the value range of Z is Z≥15 mm.

[0018] By setting the value range of Z to Z≥15mm, the distance between the non-welded end of the annular lining plate and the weld is wide enough, so that the annular lining plate can receive, prevent and isolate the overflow of welding slag.

[0019] Preferably, the width of the annular lining plate is H, and the value range of H is H≥30 mm.

[0020] By setting the width range of the annular liner to H ≥ 30 mm, it is avoided that the width of the annular liner is too small and the gap is too small so that welding slag appears inside the pressure vessel tank.

[0021] Preferably, the width of the annular liner is H, and the value range of H is H≤100 mm.

[0022] By setting the width range of the annular liner to H ≤ 100 mm, material waste is avoided.

[0023] Preferably, the value range of H is 50mm≤H≤60mm.

[0024] Preferably, the thickness of the annular lining plate is D, and the value range of D is D≥1 mm.

[0025] By setting the thickness range of the annular liner to D≥1mm, it is avoided that the annular liner is too thin and the annular liner is welded through when welding the cylinder and the cover, resulting in welding slag inside the pressure vessel tank. At the same time, it is also avoided that the annular liner is too thin and the outer side of the annular liner close to the tank body is welded during the welding process, and the temperature inside is too high, resulting in welding color, oxides and other impurities.

[0026] Preferably, the thickness of the annular lining plate is D, and the value range of D is D≤10 mm.

[0027] By setting the thickness range of the annular liner to D≤10mm, it is avoided that the annular liner is too thick to affect the volume of the pressure vessel tank, and the annular liner is too thick to waste materials.

[0028] Preferably, the value range of D is 3mm≤H≤5mm.

[0029] Preferably, the pressure vessel storage tank further comprises a support foot, and the support foot is connected to the sealing cover.

[0030] Preferably, the pressure vessel storage tank further comprises a manhole, and the manhole is arranged on the cylinder.

[0031] Preferably, the pressure vessel storage tank further comprises an air inlet and an air outlet, and the air inlet and the air outlet are both arranged on the cylinder.

[0032] Preferably, the sealing cover or the cylinder and the annular liner are welded by intermittent welding.

[0033] The strength of the welding connection between the annular liner and the tank body only needs to be able to fix the annular liner. Therefore, the welding method of the cover or cylinder and the annular liner is set to intermittent welding, which has low welding difficulty and high efficiency.

[0034] The positive and progressive effect of the utility model is that: by arranging an annular liner inside the storage tank body, one of the cylinder and the cover is welded to the annular liner, and because the projection of the cylinder and the cover in the radial direction is within the projection range of the annular liner, that is, there is a gap between the annular liner and the storage tank body, and the gap extends from the connection between the cylinder or the cover and the annular liner through the weld between the cylinder and the cover to the cover or cylinder that is not connected to the annular liner. When welding and assembling the pressure vessel storage tank, the annular liner can be welded to the cylinder or the cover first, and the welding slag, welding color, oxides and other impurities at the welding place can be polished inside and outside to clean the welding place between the annular liner and the storage tank body, and then the cylinder and the cover can be welded. Since there is a gap between the annular liner and the tank body, the gap can accommodate welding slag when the cylinder and the cover are welded. The welding slag flows into the gap and fills the gap so that the annular liner, the cylinder and the cover form a whole. The annular liner on the inner side of the tank body covers the weld to shield the welding slag, so that there is no welding slag, welding color, oxides and other impurities inside the pressure vessel tank. The pressure vessel tank has a simple structure, a simple welding process and high manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the front view structure of a pressure vessel storage tank according to a preferred embodiment of the utility model.

[0036] Figure 2This is a schematic diagram of the structure of a pressure vessel storage tank viewed from above in a preferred embodiment of the utility model.

[0037] Figure 3 The figure is a schematic cross-sectional structure diagram of a pressure vessel storage tank according to a preferred embodiment of the utility model.

[0038] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0039] Description of reference numerals:

[0040] Pressure vessel tank 001

[0041] Cylinder 1

[0042] Cap 2

[0043] First Cover 201

[0044] Second cover 202

[0045] Ring liner 3

[0046] Air outlet 4

[0047] Air Inlet 5

[0048] Support leg 6

[0049] Manhole 7

[0050] Weld 8 DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] like Figure 1-Figure 4 As shown, this embodiment provides a pressure vessel storage tank 001, which includes a storage tank body, the storage tank body includes a cylinder 1 and a cover 2 connected by welding, the pressure vessel storage tank 001 also includes an annular lining 3, the annular lining 3 is located inside the pressure vessel storage tank 001, and the outer surface shape and size of the annular lining 3 match the inner surface shape and size of the storage tank body at the connection between the cylinder 1 and the cover 2; at the connection between the cylinder 1 and the cover 2, the cylinder 1 is welded to the annular lining 3; the projections of the cylinder 1 and the cover 2 along the radial direction of the pressure vessel storage tank 001 are within the projection range of the annular lining 3 along the horizontal direction.

[0053] Specifically, the pressure vessel storage tank in the present embodiment is a gas storage tank. In other embodiments, the pressure vessel storage tank may also be a pressure vessel storage tank containing other media.

[0054] Taking this embodiment as an example, the inner surfaces of the cylinder 1 and the cover 2 are cylindrical with the same shape and size, and the outer surface of the annular lining 3 has the same shape and size as the cylinder 1 and the cover 2, so that when the annular lining 3 is arranged at the connection between the cylinder 1 and the cover 2, the outer surface of the annular lining 3 can maintain a fit with the inner surfaces of the cylinder 1 and the cover 2.

[0055] By arranging the annular liner 3 inside the storage tank body, the cylinder 1 and the annular liner 3 are welded, and since the projection of the cylinder 1 and the cover 2 in the radial direction is within the projection range of the annular liner 3, that is, there is a gap between the annular liner 3 and the storage tank body, and the gap extends from the connection between the cylinder 1 and the annular liner 3 to the cover 2 through the weld 8 between the cylinder 1 and the cover 2. When welding and assembling the pressure vessel storage tank 001, the annular liner 3 and the cylinder 1 can be welded first, and the welding slag, welding color, oxides and other impurities at the welding place can be polished inside and outside to clean the welding place between the annular liner 3 and the storage tank body, and then the two cylinders 1 of the cover are aligned, and argon or other inert gas is filled toward the inner side of the storage tank body through the through hole on the storage tank body, and the cylinder 1 and the cover 2 are welded by a single-sided welding and double-sided forming welding process, so that the cylinder 1 and the cover 2 are connected to form a complete pressure vessel storage tank 001. Since there is a gap between the annular lining 3 and the tank body, when the cylinder 1 and the cover 2 are welded, the gap can accommodate welding slag. The welding slag flows into the gap and fills the gap so that the annular lining 3, the cylinder 1 and the cover 2 form a whole. The annular lining on the inner side of the tank body covers the weld to shield the welding slag, so that there is no welding slag inside the pressure vessel tank 001. The pressure vessel tank 001 has a simple structure, a simple welding process and high manufacturing efficiency.

[0056] The single-sided welding and double-sided forming process involved in this embodiment is an existing technology, which can effectively improve the quality of welding connection. The specific welding scheme will not be repeated here.

[0057] In this embodiment, the annular lining 3 is not welded to the cover 2, but is welded to the cylinder 1. This is because the volume and weight of the cylinder 1 are greater than those of the cover 2. Compared with the solution of welding the cover 2 to the annular lining 3, after the cylinder 1 and the annular lining 3 are welded, the lighter cover 2 is aligned and installed with the cylinder 1 and the annular lining 3, and the docking operation between the cover 2 and the annular lining 3 is more convenient.

[0058] Of course, in other embodiments, the annular liner 3 can also be selected to be welded to the cover 2, so that the gap between the annular liner 3 and the tank body extends from the welding point between the annular liner 3 and the cover 2 to the cylinder 1, and the gap also passes through the weld 8 between the cylinder 1 and the cover 2.

[0059] like Figure 1and Figure 3 As shown, in this embodiment, the cover 2 includes a first cover 201 and a second cover 202 respectively connected to both ends of the cylinder 1, and the number of the annular lining plates 3 is two, one of which is correspondingly arranged at the connection between the first cover 201 and the cylinder 1, and the other annular lining plate 3 is correspondingly arranged at the connection between the second cover 202 and the cylinder 1. By arranging the annular lining plates 3 at both the first cover 201 and the second cover 202, no welding slag will appear inside the pressure vessel storage tank 001 when welding the first cover 201 and the cylinder 1 and welding the second cover 202 and the cylinder 1.

[0060] Specifically in the present embodiment, since the cover 2 has a first cover 201 and a second cover 202, for the cover 2 that is welded first, since the pressure vessel tank 001 is still in an open state, it is impossible to use inert gas to prevent the appearance of welding color. The welding color and other oxides can be cleaned by grinding after normal welding. When welding the last cover 2 that is welded before the tank body is closed, inert gas is filled into the pressure vessel tank 001 to isolate the air and prevent the appearance of welding color.

[0061] Of course, in other embodiments, only one annular lining plate 3 may be provided, and the annular lining plate 3 is only provided at the connection between the latter sealing cover 2 connected to the cylinder body 1 and the cylinder body 1, that is, the welding slag and impurities at the connection between the sealing cover 2 connected to the cylinder body 1 and the cylinder body 1 can be directly polished and cleaned, and then the latter sealing cover 2 is connected to the cylinder body 1 by welding. That is to say, if the first cover 201 is connected to the cylinder body 1 first, the welding slag, welding color and other impurities at the connection between the first cover 201 and the cylinder body 1 are directly grinded and cleaned, and the annular lining 3 is set at the connection between the second cover 202 and the cylinder body 1. After the welding slag, welding color and other impurities at the connection between the first cover and the cylinder body 1 are cleaned, the second cover 202 and the cylinder body 1 are welded; if the second cover 202 is connected to the cylinder body 1 first, the welding slag, welding color and other impurities at the connection between the second cover 202 and the cylinder body 1 are directly grinded and cleaned, and the annular lining 3 is set at the connection between the first cover 201 and the cylinder body 1. After the welding slag, welding color and other impurities at the connection between the second cover 202 and the cylinder body 1 are cleaned, the first cover 201 and the cylinder body 1 are welded.

[0062] In this embodiment, if Figure 4 As shown, along the axial direction of the pressure vessel tank 001, that is, along the width direction of the annular lining 3, the center of the annular lining 3 and the center of the weld 8 are at the same position. By setting the center of the annular lining 3 to be the same as the center of the weld 8, the width of the annular lining 3 protruding to both ends relative to the weld 8 is also the same, making the structure at the annular lining 3 more beautiful.

[0063] Of course, in other embodiments, the center of the annular liner 3 may not coincide with the center of the weld 8, but it is ensured that along the width direction of the annular liner 3, the spacing between the non-welded end of the annular liner 3 and the weld 8 of the cylinder 1 and the cover 2 is Z, and the value range of Z is Z ≥ 15mm. By ensuring that Z ≥ 15mm, the length of the gap between the annular liner 3 and the tank body from the non-welded end of the annular liner 3 to the weld 8 of the cylinder 1 and the cover 2 is sufficient to accommodate the substances generated when the cover 2 and the cylinder 1 are welded, so as to prevent these substances from overflowing from the gap and forming welding slag inside the pressure vessel tank 001.

[0064] In this embodiment, the width of the annular liner 3 is H, H=50 mm, so in this embodiment, Z=25 mm.

[0065] Of course, in other implementations, as long as the width range of the annular liner 3 is set to H≥30mm, the problem of the annular liner 3 being too small in width and the gap being too short so that welding slag appears inside the pressure vessel storage tank 001 can be avoided. At the same time, the value range of H is H≤100mm to avoid wasting materials, and when the value range of H is 50mm≤H≤60mm, it can ensure that the gap between the annular liner 3 and the tank body is long enough to avoid welding slag inside the pressure vessel storage tank 001 and avoid wasting materials.

[0066] In this embodiment, the thickness of the annular lining plate 3 is D, and D is equal to 3 mm. By setting D to 3 mm, the annular lining plate 3 with a thickness of 3 mm can not only avoid the appearance of welding slag, welding color and other impurities inside the pressure vessel storage tank 001, but also save materials. Specifically, during welding, the side of the annular lining plate close to the storage tank body, that is, the outer side of the annular lining plate will melt due to welding. If the annular lining plate is too thin, the inner side of the annular lining plate may be oxidized due to excessive temperature, producing welding color, oxides and other impurities. If the thickness of the annular lining plate is so thin that it will be directly welded through, welding slag will appear on the inner side of the annular lining plate, that is, inside the storage tank. Therefore, the annular lining plate cannot be set too thin.

[0067] Of course, in other embodiments, as long as D ≥ 1 mm, the problem of welding slag or welding color inside the pressure vessel storage tank 001 due to the thin annular liner 3 when welding the cylinder 1 and the cover 2 can be avoided. At the same time, as long as D ≤ 10 mm, the annular liner 3 is too thick to affect the volume of the pressure vessel storage tank 001, and the annular liner 3 is too thick to waste materials. Of course, if the value range of D is 3 mm ≤ H ≤ 5 mm, it can achieve the effect of not causing the annular liner 3 to be welded through and saving materials.

[0068] In this embodiment, if Figure 1 and Figure 3As shown, the pressure vessel storage tank 001 also includes a support leg 6, which is connected to the cover 2. The support leg 6 is arranged on the pressure vessel storage tank 001 to facilitate the upright placement of the pressure vessel storage tank 001. At the same time, the pressure vessel storage tank 001 also includes an air inlet 5, an air outlet 4 and a manhole 7. The air inlet 5, the air outlet 4 and the manhole 7 are all arranged on the cylinder 1, and the parameters inside the pressure vessel storage tank 001 can be detected through the manhole 7. Since no welding slag and welding color will appear in the pressure vessel storage tank 001 when the cylinder and the last cover are welded in this embodiment, it is not necessary to enter the pressure vessel storage tank 001 through the manhole 7 for cleaning and polishing. When the pressure vessel storage tank 001 is placed upright, the height of the air inlet 5 is lower than the height of the air outlet 4, so that the impurities in the gas can settle to the bottom of the tank after the gas enters the pressure vessel storage tank 001 from the air inlet 5, and the clean gas is output through the air outlet 4 above.

[0069] Of course, in other embodiments, the manhole may not be provided, and other methods in the prior art may be used to detect the parameters or status inside the pressure vessel storage tank 001, which will not be described in detail here.

[0070] In this embodiment, the welding method of the cylinder 1 and the annular liner 3 is intermittent welding. Since the strength of the welding connection between the annular liner 3 and the tank body only needs to be able to fix the annular liner 3, the welding method of the cylinder 1 and the annular liner 3 is set to intermittent welding, which has low welding difficulty and high efficiency.

[0071] Of course, in other embodiments, the annular liner 3 and the cylinder 1 or the cover 2 may also be welded by full welding, which will not be described in detail here.

[0072] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A pressure vessel storage tank, comprising a storage tank body, wherein the storage tank body comprises a cylinder and a cover connected by welding, characterized in that: The pressure vessel storage tank further comprises an annular liner, which is located inside the pressure vessel storage tank, and the outer surface shape and size of the annular liner match the inner surface shape and size of the storage tank body at the connection between the cylinder and the cover; At the connection between the cylinder and the cover, one of the cylinder and the cover is welded to the annular liner; the projections of the cylinder and the cover along the radial direction of the pressure vessel tank are within the projection range of the annular liner along the horizontal direction.

2. The pressure vessel storage tank according to claim 1, characterized in that: The sealing cover includes a first sealing cover and a second sealing cover respectively connected to the two ends of the cylinder body, and the number of the annular lining plates is two, one of which is correspondingly arranged at the connection between the first sealing cover and the cylinder body, and the other annular lining plate is correspondingly arranged at the connection between the second sealing cover and the cylinder body.

3. The pressure vessel storage tank according to claim 1, characterized in that: The cylinder is connected to the annular liner by welding.

4. The pressure vessel storage tank according to claim 1, characterized in that: Along the axial direction of the pressure vessel storage tank, the centers of the welds between the cylinder and the cover are at the same position as the center of the annular liner.

5. The pressure vessel storage tank according to claim 1, characterized in that: Along the width direction of the annular liner, the spacing between the non-welded end of the annular liner and the welds of the cylinder and the cover is Z, and the value range of Z is Z≥15mm.

6. The pressure vessel storage tank according to any one of claims 1 to 5, characterized in that: The width of the annular lining plate is H, and the value range of H is H ≥ 30 mm; And / or, the width of the annular lining plate is H, and the value range of H is H≤100 mm.

7. The pressure vessel storage tank according to claim 6, characterized in that: The value range of H is 50mm≤H≤60mm.

8. The pressure vessel storage tank according to claim 1, characterized in that: The thickness of the annular lining plate is D, and the value range of D is D≥1mm; And / or, the thickness of the annular lining plate is D, and the value range of D is D≤10 mm.

9. The pressure vessel storage tank according to claim 8, characterized in that: The value range of D is 3mm≤H≤5mm.

10. The pressure vessel storage tank according to claim 1, characterized in that: The welding method of the sealing cover or the cylinder and the annular liner is intermittent welding; And / or, the pressure vessel storage tank further comprises a support foot, wherein the support foot is connected to the sealing cover; And / or, the pressure vessel storage tank further comprises a manhole, and the manhole is arranged on the surface of the cylinder; And / or, the pressure vessel storage tank further includes an air inlet and an air outlet, wherein the air inlet and the air outlet are both arranged on the surface of the cylinder, and the air inlet and the air outlet are oriented in different directions.

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