CN115388330B - Impact-resistant protective material nondestructive fixing support structure suitable for high-pressure hydrogen storage device - Google Patents

Abstract

The invention provides an impact-resistant protective material nondestructive fixing support structure suitable for a high-pressure hydrogen storage device, which comprises a ring plate, a protective belt, a support ring, a protective material layer and a protective shell, wherein the ring plate is nested on a left seal head and a right seal head, the protective belt is uniformly paved on the device, and two ends of the protective belt are fixed with the ring plate; the supporting ring is fixed on the protective belt through the fastening plate and supports the protective belt to keep the original position. The anti-impact protective material layer is fixed on the protective belt by rivets, the protective shell is fixed outside the protective material layer, the protective material layer is prevented from falling off, and the anti-impact protective material is supported in a nondestructive fixed manner. The support structure does not need welding and is installed in a nondestructive way; the assembly and the disassembly are simple, and the structure is light; only part of the structure is required to be disassembled when the high-pressure hydrogen storage device is required to be detected; the whole efficiency is high and the cost can be reduced.

Description

Impact-resistant protective material and non-destructive fixed support structure suitable for high-pressure hydrogen storage devices

Technical field

The invention belongs to the technical field of impact protection, and specifically relates to a non-destructive fixed support structure of impact protection materials suitable for high-pressure hydrogen storage devices.

Background technique

The high-pressure hydrogen storage device is the core equipment of the hydrogen refueling station. On the one hand, its storage medium hydrogen is flammable and explosive, and hydrogen safety accidents have occurred continuously around the world in recent years. On the other hand, due to the layout of the hydrogen storage device in the hydrogen refueling station, Closer contact may lead to a domino event when an accident occurs, causing even worse effects. Therefore, it is necessary to provide external impact protection for high-pressure hydrogen storage devices to reduce damage to the device caused by external fragments, shock waves, etc.

The impact protection of high-pressure hydrogen storage devices requires corresponding structures to support fixed protective materials. However, in order to prevent stress concentration due to structural discontinuity, welding and other operations are not allowed on the high-pressure hydrogen storage device. In this case, the It is difficult to match the fixed support structure with the high-pressure hydrogen storage device. And the high-pressure hydrogen storage device generally needs to be fixed by a saddle, and a pipe may be connected to it. Therefore, when setting up an external anti-impact protection structure for it, the connection between the saddle or the pipe needs to be avoided, which further increases the difficulty of installation.

Contents of the invention

In order to solve the problems existing in the prior art, the present invention provides a non-destructive fixed support structure of impact-resistant protective materials suitable for high-pressure hydrogen storage devices. This structure realizes non-destructive installation of high-pressure hydrogen storage devices, has good protection effect, and can be disassembled and assembled , easy maintenance and low cost.

A non-destructive fixed support structure of impact-resistant protective materials suitable for high-pressure hydrogen storage devices, including:

Two ring plates respectively set on the sealing heads at both ends of the high-pressure hydrogen storage device;

Multiple protective belts located outside the high-pressure hydrogen storage device, and the two ends of each protective belt are respectively fixedly connected to two of the ring plates;

Multiple support rings are set outside the high-pressure hydrogen storage device and are arranged perpendicular to its axial direction. Each support ring is installed on each protective belt through multiple pairs of fastening plates corresponding to the multiple protective belts; A protective material layer on the outside of the belt, the protective material layer is arranged in blocks according to the areas jointly divided by the protective belt and the support ring;

A protective shell is provided outside the protective material layer, and the protective shell is connected to a fastening plate to fix the protective material layer.

Among them, the connection between the protective belt and the ring plate and the fastening plate and the protective belt are all fixed by welding. The support ring is not only fixed on the outside of the high-pressure hydrogen storage device with the help of protective belts, but also allows the protective belt brackets to be relatively fixed (maintaining the original spacing) without being deformed due to the influence of its own gravity. Each two protective strips do not intersect outside the high-pressure hydrogen storage device. Setting the protective material layers in blocks not only facilitates installation, but also saves maintenance costs; when replacement is needed, only the damaged parts need to be replaced.

The width of the protective strip may be the same as or different from the width of one end of the fastening plate. Preferably, the width of the protective strip is the same as the width of one end of the fastening plate.

Preferably, the ring plate is made of bent and welded steel plates. The ring plate is located close to the inlet/outlet of the high-pressure hydrogen storage device, and the bending shape of the ring plate is determined according to the shape of the head there to match the shape of the head there. .

Preferably, the protective belt is a thin narrow steel belt, and both ends of the protective belt are fixed to the ring plates on both sides by spot welding. The protective belt can be bent on site when installed and is not welded to the device; the protective belt can be segmented, and the length of the segments is determined by the specific situation. The segmented protective belts are fixedly connected through support rings and fastening plates; the protective belt can be disconnected. That is, when encountering interference, the protective belt can be disconnected according to the specific situation to avoid it.

Preferably, the fastening plates are U-shaped, the two fastening plate openings in each pair of fastening plates are arranged opposite to each other, and the support ring is located between the top ends of the two fastening plates;

The inner end of each fastening plate is fixedly connected to the protective belt, and the outer end is connected to the protective shell through rivets.

As a further preference, each of the support rings includes a plurality of support plates, and two adjacent support plates are connected by a pressure plate;

Two pairs of fastening plates are respectively arranged on both sides of the middle part of the support plate and are detachably connected thereto.

Among them, the support plate has a fan-shaped ring structure.

Using this technical solution, the support ring is disassembled into multiple components, making installation and disassembly more convenient; at the same time, it can flexibly avoid the connection between the saddle or the pipe, and maintain the integrity of the protective structure. That is, when encountering a connection that needs to be avoided, the protective belt can be disconnected and an appropriate number of support plates and pressure plates can be removed to provide avoidance space; the disconnected protective belt can be passed through the support ring composed of the support plate and the pressure plate and the tight The solid board is fixed, and the protective belt can also reversely fix the broken support ring to achieve the integrity of the support structure.

As a further preference, bolt holes are respectively provided at both ends and the middle of the support plate, both ends of the pressure plate, and the top and middle of the fastening plate;

The support plate and the pressure plate, and the support plate and the fastening plate are connected through corresponding bolt holes and bolts and nuts respectively. The connection through bolts and nuts not only stabilizes the structure but also makes installation and disassembly easier.

As a further preference, the bolt holes provided at both ends of the pressure plate are waist-shaped holes and are provided along the connection direction with the support plate. The design of the waist-shaped hole can appropriately adjust the tightness of the support ring to better fit the size of the device, and better protect the high-pressure hydrogen storage device.

As a further preference, when the high-pressure hydrogen storage device is connected to a saddle or a pipe, the protective belt is disconnected at the connection point, and the support plate and pressure plate at the corresponding position are removed for avoidance; and the protective belt at the disconnected position is fixed by a support ring .

As a further preference, the outer side of the support plate (the side away from the high-pressure hydrogen storage device) is aligned with the outer end of the fastening plate (the end away from the high-pressure hydrogen storage device).

Preferably, the top width of the fastening plate (the distance between both ends of the fastening plate) is the same as the thickness of the protective material layer, and the four corners of each protective material layer are respectively embedded in the corresponding four fastening plates. inside the opening.

Multiple protective belts and multiple support rings divide the exterior of the high-pressure hydrogen storage device into multiple areas. The four corners of each area correspond to the openings of the four fastening plates. The four corners of the protective material layer are respectively embedded in the four fastening plates. The opening can play a role in assisting the fixation of the protective material layer.

Preferably, the protective shell is installed in pieces. The adoption of this technical solution makes installation and disassembly more convenient. Each protective shell can be fixed with only one protective material layer, or multiple protective material layers can be fixed at the same time; the size of the protective shell can be adjusted according to actual needs.

Preferably, multiple protective strips are evenly arranged along the circumferential direction of the high-pressure hydrogen storage device.

Preferably, a plurality of the support rings are evenly arranged along the axial direction of the high-pressure hydrogen storage device.

Of course, the arrangement of multiple protective belts and multiple support rings can also be adjusted appropriately according to the actual situation. If interference is encountered and needs to be avoided, the distance can be adjusted in a small amount so that the protective belts or support rings can be avoided without disconnecting.

Preferably, the protective material layer and the protective belt are detachably connected by rivets. It ensures better fixation of the protective material layer and facilitates replacement.

The impact-resistant protective material non-destructive fixed support structure of the present invention is applicable to all types of horizontal pressure vessels that are not allowed to be welded.

The non-destructive fixed support structure of the impact-resistant protective material suitable for high-pressure hydrogen storage devices of the present invention includes a ring plate, a protective belt, a support ring, a protective layer and a protective shell; the ring plate is nested on the left and right heads, and the protective belt is evenly laid on the On the device, both ends are fixed with ring plates; the support ring is fixed on the protective belt through the fastening plate, and supports the protective belt to maintain its original position. The impact-resistant protective material layer is fixed on the protective belt with rivets, and the protective shell is fixed on the outermost part to prevent the protective material from falling off and achieve non-destructive fixed support of the impact-resistant protective material. The support structure of the present invention does not require welding and is installed without damage; it is easy to assemble and disassemble, and the structure is light; when it is necessary to detect the high-pressure hydrogen storage device, only part of the structure needs to be disassembled; the overall efficiency is high and the cost can be reduced.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The non-destructive fixed support structure of the impact-resistant protective material of the present invention does not require welding and is installed non-destructively; the two end ring plates with smaller diameters are connected to the two ends of the protective belt to prevent the fixed support structure from falling off the hydrogen storage device; the support ring uses While the protective belt supports and fixes itself, it also fixes the position of the protective belt; the ring plate, the protective belt and the support ring together constitute the main structure, so that the impact-resistant protective material can be fixed without damage to the support structure without welding to the high-pressure hydrogen storage device. Put it on it to achieve lossless installation.

(2) The non-destructive fixed support structure of the impact-resistant protective material of the present invention has a simple and lightweight structure, and is easy to install and disassemble. The main body of the structure is composed of thin steel plates or steel strips. The structure is light in weight and the equipment has a small load-bearing capacity. Impact-resistant protective material is placed outside the protective belt, and a protective shell is placed outside the protective material. The structure is simple. The protective materials and protective shells are installed in blocks to facilitate disassembly and equipment maintenance and inspection. When the high-pressure hydrogen storage device needs to be inspected, there is no need to stop work. It is only necessary to remove the protective shell and impact-resistant protective material layer, which is easy to operate.

Description of drawings

Figure 1 (a) is a schematic diagram of the overall structure of the embodiment of the present invention; (b) is an enlarged schematic diagram of the axial cross-sectional structure of part I in (a);

Figure 2 is a left structural schematic diagram of the impact-resistant and non-destructive fixed support structure according to the embodiment of the present invention;

Figure 3 is a schematic diagram of the support plate and pressure plate and their connection structure in the embodiment of the present invention;

Figure 4 is a schematic structural diagram of the U-shaped fastening plate in the embodiment of the present invention.

In the picture: 1. Hydrogen storage device cylinder, 2. Protective belt, 3. Fastening plate, 4. Support ring, 5. Bolt, 6. Nut, 7. Protective material layer, 8. Protective shell, 9. Ring plate , 10. Pressure plate, 11. Support plate, 20. Saddle.

Detailed ways

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings 1 to 4.

An anti-impact protective material non-destructive fixed support structure suitable for high-pressure hydrogen storage devices mainly consists of multiple protective belts 2 , multiple support rings 4 , multiple anti-impact protective material layers 7 and two ring plates 9 . Two ring plates 9 are respectively set on the heads at both ends of the high-pressure hydrogen storage device, and the shape fits the heads; the protective belt 2 is laid along the axial direction on the cylinder and head of the high-pressure hydrogen storage device, and the two ends are respectively fixed on the two ends. A ring plate 9; a plurality of protective belts 2 are evenly arranged along the circumferential direction of the high-pressure hydrogen storage device.

According to the actual situation, two (one pair) U-shaped fastening plates 3 are fixed on the protective belt 2 at a set distance (the inner end of the fastening plate 3 is welded to the protective belt 2), and the openings of the two fastening plates 3 Set oppositely; the fastening plate 3 includes two side ends (inner end and outer end) and a top end, wherein a bolt hole is provided in the middle of the top end;

The support ring 4 is placed between the two fastening plates 3. Bolt holes are provided on the support ring 4 corresponding to the bolt holes on the fastening plates 3. The support ring 4 is connected to a pair of fastening plates 3 through the bolt holes, bolts 5 and nuts 6. fixed. Each support ring 4 is fixed on the protective belt 2 through a plurality of pairs of fastening plates 3 corresponding to the plurality of protective belts 2 . The support ring 4 is not only fixed by the fastening plate 3 and the protective belt 2, but also keeps the original distance between the protective belts 2 without being deformed due to the influence of gravity.

In (a) of Figure 1, the fastening plates 3 and support rings 4 on both ends of the head are not shown.

Multiple protective belts 2 and multiple support rings 4 divide the outside of the high-pressure hydrogen storage device into multiple areas; protective material layers 7 are laid in blocks outside the protective belt 2, and each protective material layer 7 is located in one area and is riveted Fastened to protective tape 2. A protective shell 8 is laid outside the protective material layer 7, and the protective shell 8 is connected to the outer end of the fastening plate 3 through rivets.

As shown in (a) of Figure 1 , the protective belt 2 can be disconnected at locations such as the saddle 20 that interfere with the fixed support structure, and the protective belt 2 is fixed with the help of the support ring 4 at the disconnected point. Taking the saddle 20 as an example, at the place where the saddle 20 is installed, the protective belts 2 are laid to about 50mm on the left and right sides of the saddle 20 (can be adjusted according to actual needs). On the other side where the protective belts 2 are not welded to the ring plate, A support ring 4 is provided at one end to fix it.

As shown in Figure 1 (b) and Figure 4, the U-shaped fastening plate 3 is fixed on the outside of the protective belt 2. The two fastening plates 3 face opposite directions (the openings are opposite). The protective belt 2 and the U-shaped fastening plate 3 The inner ends of the two fastening plates 3 are welded so that the middle openings (bolt holes) of the two fastening plates 3 are parallel, and a gap for placing the support ring 4 is maintained between the two fastening plates 3. The outer boundary of the support ring 4 (the side away from the high-pressure hydrogen storage device) is flush with the outer boundary of the fastening plate 3 (the side away from the high-pressure hydrogen storage device), and is connected to the fastening plate 3 through bolt holes, bolts 5 and nuts 6 fixed. The four corners of the impact-resistant protective material layer 7 are embedded in the corresponding openings of the four fastening plates 3 . There is a protective shell 8 on the outside of the protective material layer 7. The protective shell 8 is installed in pieces. The outer ends of each protective shell 8 and the fastening plate 3 are fixed by rivets, thereby completely covering the impact-resistant protective material layer 7 and the fastening plate. 3 and support ring 4.

As shown in Figures 2 and 3, the end of the protective belt 2 is bent and placed on the ring plate 9 and is welded and fixed with the ring plate 9. The support ring 4 includes a plurality of support plates 11. Bolt holes are provided at both ends and in the middle of the support plate 11. The middle bolt hole is used to fix with the fastening plate 3. The bolt holes at both ends are used to connect with multiple pressure plates 10 to connect several pressure plates 10. The support plates 11 are connected to form a support ring 4. The two adjacent support plates 11 and the pressure plate 10 (the two ends of the pressure plate 10 are respectively provided with waist-shaped holes, and the waist-shaped holes are arranged along the connection direction of the support plates) pass through the bolt holes and the waist-shaped holes. Connect and fix with bolts 5 and nuts 6.

The specific implementation process and principle of this embodiment are as follows:

First, determine the size and quantity of each part according to the specific conditions of the hydrogen storage device. During installation, first put two ring plates 9 on the heads at both ends of the high-pressure hydrogen storage device, and then take a plurality of protective tapes 2 of appropriate length and lay them evenly on the outside of the high-pressure hydrogen storage device in the circumferential direction, with each protective tape The two ends of 2 are welded to two ring plates 9 respectively. The protective belt 2 can be segmented (when the length of the protective belt is insufficient, etc.), the segment length depends on the specific situation, and each segment is connected by bolts. Then, multiple pairs of fastening plates 3 are welded on the protective belt 2 at a set distance according to the actual situation. After the welding of the fastening plates 3 is completed, the support plate 11 is fixed between the pairs of fastening plates 3 through bolts and nuts. The support plate 11 corresponds to a pair of fastening plates 3 . Adjacent support plates 11 are then connected through pressure plates 10 to form a support ring 4 .

Multiple protective belts 2 and multiple support rings 4 divide the high-pressure hydrogen storage device into multiple small areas, and the four corners of each small area correspond to the openings of the four fastening plates 3 . The impact-resistant protective material layer 7 is installed in pieces. The protective material layer 7 that has been cut to a suitable size is embedded between the openings of the four fastening plates 3 and fixed with rivets and protective tapes 2 . Finally, the protective shell 8 is laid in pieces so that the protective shell 8 completely covers the internal structure (including the fastening plate 3, the protective material layer 7 and the support ring 4). The outer ends of the protective shell 8 and the fastening plate 3 are fixed by rivets. Each protective shell 8 can be fixed with one protective material layer 7, or multiple protective material layers 7 can be fixed at the same time, and can be adjusted according to specific conditions. When disassembling, proceed in the reverse order of installation.

When the hydrogen storage device needs to be inspected and repaired, it is not necessary to dismantle the overall fixed support device. It is only necessary to remove the protective shell 8 and the protective material layer 7 in order. After removing the protective shell 8 of the part that needs to be inspected, the impact-resistant protective material layer 7 can be seen. After it is removed, the device can be inspected. When part of the protective material layer 7 is damaged, only the damaged part needs to be replaced, which facilitates maintenance and reduces costs.

The above-mentioned specific embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modifications and changes made to the present invention fall within the protection scope of the present invention.

Claims (4)

1. An impact resistant protective material nondestructive fixed support structure for a high pressure hydrogen storage device, comprising:

two annular plates respectively sleeved on the sealing heads at two ends of the high-pressure hydrogen storage device;

a plurality of protective belts arranged outside the high-pressure hydrogen storage device, wherein two ends of each protective belt are fixedly connected with two annular plates respectively;

a plurality of support rings sleeved outside the high-pressure hydrogen storage device and axially arranged vertically to the high-pressure hydrogen storage device, wherein each support ring is arranged on each protection belt through a plurality of pairs of fastening plates corresponding to the protection belts one by one;

the protective material layer is arranged on the outer side of the protective belt and is arranged in a blocking mode according to the area divided by the protective belt and the supporting ring;

the protective shell is arranged on the outer side of the protective material layer and is connected with the fastening plate to fix the protective material layer;

the fastening plates are , the openings of the two fastening plates in each pair of fastening plates are arranged in opposite directions, and the supporting ring is positioned between the top ends of the two fastening plates;

the inner end of each fastening plate is fixedly connected with the protective belt, and the outer end of each fastening plate is connected with the protective shell through rivets;

each supporting ring comprises a plurality of supporting plates, and two adjacent supporting plates are connected through a pressing plate;

the two paired fastening plates are respectively arranged on two sides of the middle part of the supporting plate and are detachably connected with the supporting plate;

bolt holes are respectively formed in the two ends and the middle of the supporting plate, the two ends of the pressing plate and the middle of the top end of the fastening plate;

the supporting plate and the pressing plate and the supporting plate and the fastening plate are respectively connected through corresponding bolt holes and bolts and nuts;

bolt holes arranged at two ends of the pressing plate are waist-shaped holes and are arranged along the connection direction with the supporting plate;

the protective shell is installed in a blocking mode;

the protective material layer is detachably connected with the protective belt through rivets;

the protective belt is a thin and narrow steel belt; the annular plate is formed by bending and welding steel plates, the position of the annular plate is close to the air inlet/outlet of the high-pressure hydrogen storage device, and the shape of the annular plate is matched with that of the seal head.

2. The impact-resistant protective material nondestructive fixing support structure for a high-pressure hydrogen storage device according to claim 1, wherein for the case that the high-pressure hydrogen storage device is connected with a saddle or a connecting pipe, the protective belt is broken at the connection position, the support plate and the pressing plate at the corresponding position are disassembled for avoiding, and the protective belt at the broken position is fixed through the support ring.

3. The impact resistant protective material non-destructive fixed support structure for a high pressure hydrogen storage device of claim 1, wherein the outer side of the support plate is disposed in alignment with the outer end of the fastening plate.

4. The impact resistant protective material nondestructive stationary support structure for a high pressure hydrogen storage device of claim 1, wherein a plurality of protective strips are uniformly arranged along the circumference of the high pressure hydrogen storage device;

the plurality of support rings are uniformly arranged along the axial direction of the high-pressure hydrogen storage device.