CN204494068U - Cylinder type gas chamber piston - Google Patents

Abstract

The utility model discloses a cylindrical gas tank piston, which mainly aims to solve the problems in the prior art that the pressure adjustment range of the gas tank is small and has potential safety hazards. The piston includes a piston ring beam and a horizontal piston bottom plate, the outer peripheral edge of the piston bottom plate is connected with the inner side plate of the piston ring beam; a center ring beam is arranged on the piston bottom plate, and the center ring beam is sleeved in the piston ring beam; the center ring beam A number of piston trusses are connected to the piston ring beam, and the piston trusses are radially distributed, and the lower chords of the piston trusses are connected to the piston bottom plate; movable counterweights are arranged on the piston bottom plate between the piston trusses. Because the piston bottom plate is a horizontal structure, the movable counterweight can be placed on the piston bottom plate, so it does not need to be stacked on the piston ring beam, which improves the safety of the gas cabinet operation. At the same time, more movable counterweights can be placed on the piston bottom plate, so that the pressure adjustment range of the gas holder is larger.

Description

Cylindrical gas tank piston

technical field

The utility model relates to a cylindrical gas tank piston.

Background technique

The pressure in the cylindrical gas tank is determined by the weight of the piston. The current piston is composed of a piston fence, a concrete ring beam and a single-layer shallow spherical shell structure in the center of the piston. Both the steel structure part and the concrete part are fixed counterweights. , so after the construction is completed, the weight of the piston cannot be changed, and the operating pressure of the gas holder cannot be changed. However, during the operation of the factory, due to the increase of user scale or the decrease of remote customers, it is often necessary to increase or decrease the operating pressure of the gas tank. The fixed counterweight of the piston is certain, which requires increasing or decreasing the movable counterweight. However, the space for the movable counterweight of the cylindrical gas tank piston is limited, and it is difficult to place the movable counterweight of the beam, so that the maximum pressure adjustment range of the gas tank is 0.5Kpa, and the adjustment range is relatively small. However, the pressure adjustment range of some factories is often It needs to reach more than 2Kpa, so it cannot meet the pressure requirements of the gas cabinet. Moreover, these movable counterweights can only be stacked on the concrete ring beam of the piston, which not only increases the operation risk of the gas tank, but also brings inconvenience to the operation and maintenance of the gas tank.

In addition, the bottom plate of the piston is a single-layer shallow spherical shell structure, resulting in a large dead space at the bottom of the piston, which greatly reduces the throughput volume of the gas cabinet, and increases the nitrogen replacement volume and replacement time during the installation, commissioning or maintenance of the gas cabinet. Very uneconomical. In addition, the single-layer shallow spherical shell structure is a self-supporting structure, which requires the framework member of the central spherical shell to have a higher bearing capacity and larger members.

Utility model content

In view of the above problems, the utility model provides a safe and reliable cylindrical gas holder piston with a large pressure adjustment range of the gas holder.

In order to achieve the above object, the cylinder type gas tank piston of the present invention includes a piston ring beam and a horizontal piston bottom plate, the outer peripheral edge of the piston bottom plate is connected with the inner side plate of the piston ring beam; the piston bottom plate is provided with A central ring beam, and the central ring beam is sleeved in the piston ring beam; a number of piston trusses are connected between the central ring beam and the piston ring beam, and the piston trusses are radially distributed, and the The lower chords of the piston trusses are connected to the piston bottom plates; movable counterweights are arranged on the piston bottom plates between the piston trusses.

Since the piston bottom plate is a horizontal structure, the movable counterweight can be placed on the piston bottom plate, so it does not need to be piled up on the piston ring beam, and since all the movable counterweights are placed on the piston bottom plate, the piston ring beam is more clean and tidy, greatly The operation and maintenance inside the gas holder are facilitated, and at the same time, the safety of the operation of the gas holder is greatly improved. At the same time, more movable counterweights can be placed on the piston bottom plate, so that the pressure adjustment range of the gas holder is larger. Several piston trusses are set up, these piston trusses are used as structural stress components to make the structure of the piston more stable and reliable, and its flexible pressure adjustment ability also greatly increases the flexibility of the pressure adjustment of the factory gas pipe network, and also reduces the Fluctuations in pipe network pressure.

Description of drawings

Fig. 1 is the top view of the cylindrical gas holder piston provided by the utility model;

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is a B-B view of Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

The utility model provides a cylindrical gas tank piston, which comprises a horizontal piston bottom plate 4, a piston ring beam 2, a central ring beam 5, a piston truss 1 and a movable counterweight 7, wherein the piston bottom plate, the piston ring beam, the center The ring beam and piston truss are the fixed counterweights for the pistons.

Wherein the inner side plate of the piston ring beam 2 is connected with the outer peripheral edge of the piston bottom plate 4, and the specific connection method can be but not limited to welding. Because the piston bottom plate is a horizontal structure, the movable counterweight can be placed on the piston bottom plate, so it does not need to be stacked on the piston ring beam, which improves the safety of the gas cabinet operation.

The central ring beam 5 is arranged on the piston bottom plate 4 and sleeved in the piston ring beam 2 . The bottom plate of the central ring beam 5 can be fixed together with the piston bottom plate by welding. Piston truss 1 , as a structural force-bearing member of the piston, is arranged between the piston ring beam 2 and the central ring beam 5 and is distributed radially. The lower chord of the piston truss 1 is connected to the piston bottom plate 4 . Piston truss 1 is a space truss structure, which is composed of upper chord, lower chord, and web connecting the upper chord and lower chord. The end of the web on the side of the piston ring beam is in the form of a column. The lower chord of the piston truss 1 on the piston ring beam side also penetrates into the piston ring beam 2 .

A movable counterweight 7 is arranged on the piston bottom plate 4 between the piston trusses 1 . Due to the large space of the piston bottom plate, more movable counterweights can be placed according to the needs. The more movable counterweights are placed, the larger the adjustment range of the piston weight is, and the larger the adjustment range of the pressure inside the gas holder is. Meet the production needs of gas cabinets. The number of active counterweights is determined by the pressure required by the gas holder.

As a further improvement to the above technical solution, the piston ring beam in the cylindrical gas tank piston provided by the utility model adopts a steel-reinforced concrete composite ring beam, and the steel-reinforced concrete composite ring beam is composed of a steel box beam and is arranged on the The reinforced concrete composition in the box girder, that is, the steel-reinforced concrete composite ring girder is a steel box girder structure filled with reinforced concrete. The piston ring beam of this structure is very strong. Since its outer wall is steel plate, the inner wall of the piston ring beam and the piston bottom plate can be connected by welding. Compared with simple concrete beam replacement, the connection with the piston bottom plate is easier to realize .

The piston bottom plate may be, but not limited to, consist of several groove-shaped rolled steel plates. The coils of steel plates are connected by welding to form the bottom plate of the piston. Since the grooved steel plate allows a certain amount of deformation, it is less prone to arching than the flat steel plate.

The movable counterweight can be a reinforced concrete prefabricated block weighing no more than 65kg. The movable counterweight needs to be processed in strict accordance with the design size, and the specific gravity of the reinforced concrete needs to be tested before processing. The weight of each reinforced concrete should not exceed 65kg, so as to facilitate the handling of workers.

The piston ring beam support 3 and the center ring beam support 6 are arranged inside the cylindrical gas tank. The assembly and construction of the piston ring beam can be carried out on the piston ring beam, and the assembly and construction of the center ring beam can be carried out on the center ring beam support. The number of piston ring beam supports is the same as the number of piston trusses. After the piston ring beam, center ring beam and piston truss are assembled respectively, the piston truss is connected with the piston ring beam, piston bottom plate and center ring beam by welding. When it is necessary to overhaul the piston or adjust the pressure of the gas tank, control the piston to make it fall to the bottom. After the bottom, the piston is supported by the piston ring beam support and the center ring beam support, and then the gas is replaced by nitrogen, and then passed by air. Replace the nitrogen, after it is safe, go through the manhole, carry out maintenance work, or increase or decrease the number of movable counterweights on the piston bottom plate, so as to realize the purpose of gas tank pressure regulation.

Because the utility model can increase or decrease the quantity of movable weights larger, the pressure adjustment range of the gas cabinet becomes larger. At the same time, because the movable counterweight is not stacked on the piston ring beam, the operation safety of the gas cabinet is increased. Several piston trusses are arranged, and these piston trusses serve as structural stress components to make the structure of the piston more stable and reliable. Simultaneously, the piston bottom plate of the utility model is horizontal, which reduces the dead space in the gas cabinet, thereby reducing the replacement amount and replacement time of nitrogen and air.

The above are only preferred embodiments of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the art within the technical scope disclosed by the utility model can easily think of changes or Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (5)

1. a cylindrical gas holder piston, characterized in that: comprise a piston ring beam and a horizontal piston base plate, the outer peripheral edge of the piston base plate is connected with the inner plate of the piston ring beam; the piston base plate is provided with A central ring beam, and the central ring beam is sleeved in the piston ring beam; a number of piston trusses are connected between the central ring beam and the piston ring beam, and the piston trusses are radially distributed, and the The lower chords of the piston trusses are connected to the piston bottom plates; movable counterweights are arranged on the piston bottom plates between the piston trusses. 2. The cylindrical gas holder piston according to claim 1, characterized in that: the piston ring beam is a steel-reinforced concrete composite ring beam, and the steel-reinforced concrete composite ring beam is composed of a steel box beam and is arranged on the steel box Reinforced concrete composition within the beam. 3. The cylindrical gas holder piston according to claim 1, characterized in that: the piston bottom plate is composed of several groove-shaped rolled steel plates. 4. The cylindrical gas holder piston according to claim 1, characterized in that: the movable counterweight is a reinforced concrete prefabricated block weighing no more than 65kg. 5. The cylindrical gas tank piston according to claim 1, characterized in that: the central ring beam and the piston ring beam are arranged concentrically.