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Manufacturing method of tank box type LNG gas storage peak regulation device

发布日期:2020-01-18 03:51 Document serial number: 19730110 Release date: 2020-01-18 03:51
Manufacturing method of tank box type LNG gas storage peak regulation device

The invention relates to the technical field of lng low-temperature storage equipment, in particular to a tank-type lng gas storage peak regulation device.



Background technique:

The gas storage peak regulation system refers to the supporting system that must be set in order to adapt to the time imbalance of the user's gas consumption and ensure stable gas supply. The lng gas storage peak regulation device is the main part of the gas storage peak regulation system and is mainly used to store lng The volume of lng stored in the lng gas storage peak shaving device is generally 5000 to 100,000 cubic meters. The currently used LNG gas storage peak regulation device is a large cylindrical storage tank. Its structure includes a bottom plate, a cylinder body and a conical top cover. The bottom plate is assembled and welded by a plurality of flat steel plates, and the cylinder body is formed by several rounds. The arc-shaped steel plate is assembled and welded, and the conical top cover is assembled and welded by a plurality of arc-shaped steel plates. The shortcomings of the above-mentioned lng gas storage peak shaving device are: manual welding and assembling of prefabricated arc-shaped steel plates and flat steel plates on site, installation is extremely inconvenient, labor intensity is high, and installation efficiency is low.

The cryogenic liquid storage tank is a gas storage container for storing 1ng, and has the advantages of being easy to move and easy to install; its structure mainly includes a tank body, and a gas phase port, a liquid inlet port and a liquid outlet port provided on the tank body. Accordingly, the applicant has invented a device capable of applying a cryogenic liquid storage tank to gas storage peak regulation.



Technical realization elements:

The object of the present invention is to provide a tank-type lng gas storage peak regulation device which is convenient to assemble on site.

In order to achieve the above object, the present invention adopts the following technical solution: a tank box type LNG gas storage peak shaving device, comprising a plurality of stacked tank boxes arranged in stacks, and adjacent tank boxes are detachably fixedly connected together. Each tank box is composed of a standard container frame and a low-temperature liquid storage tank fixedly installed in the standard container frame, and the gas phase port of the low-temperature liquid storage tank in each tank box is communicated with the gas-phase manifold through a gas-phase valve tube group; The liquid inlet of the cryogenic liquid storage tank in each tank is connected to the liquid inlet manifold through the liquid inlet valve tube group, and the liquid outlet of the low temperature liquid storage tank in each tank is connected to the liquid outlet valve tube group. The liquid manifolds are connected.

Further, the foregoing tank-type lng gas storage peak shaving device, wherein adjacent tanks are detachably fixedly connected together by a plurality of locking bolts.

Further, the foregoing tank-type lng gas storage peak-shaving device, wherein a low-temperature liquid storage tank of each tank is provided with a temperature sensor, a temperature transmitter, a differential pressure transmitter, and a pressure transmission device. Devices, pressure indicators, and level indicators.

Further, the foregoing tank-type lng gas storage peak-shaving device, wherein: a gas phase port, a liquid inlet, a liquid outlet, a gas phase valve tube group, and a liquid inlet on a cryogenic liquid storage tank in each tank box The valve tube group, each outlet valve tube group, temperature sensor, temperature transmitter, differential pressure transmitter, pressure transmitter, pressure display instrument, and liquid level display instrument are all located on the same side.

Further, the foregoing tank-type lng gas storage peak shaving device, wherein a steel structure maintenance platform across the layer of the tank box is provided on a side of each layer of the tank box connected to the valve tube group, and the steel The structural maintenance platform is connected and fixed to the standard container frame of the tank box on this floor through several locking bolts; there are two steel structural maintenance platforms adjacent to each other above and below to facilitate the staff to climb from the steel structural maintenance platform to another A ladder of a steel structure maintenance platform, which is connected and fixed to a standard container frame of a corresponding tank box by a plurality of locking bolts.

Further, the aforementioned tank-type lng gas storage peak-shaving device, wherein the gas-phase valve tube group is a valved connecting piece for connecting the gas-phase port of the cryogenic liquid storage tank with the gas-phase manifold.

Further, the aforementioned tank-type lng gas storage peak-shaving device, wherein the liquid inlet valve tube group is a connecting pipe member with a valve for connecting the liquid inlet of the low-temperature liquid storage tank and the liquid inlet manifold.

Further, the foregoing tank-type lng gas storage peak shaving device, wherein the liquid outlet valve tube group is a connecting pipe member with a valve for connecting the liquid outlet of the low-temperature liquid storage tank and the liquid outlet manifold.

Through the implementation of the above technical solutions, the beneficial effects of the present invention are: (1) convenient on-site assembly and disassembly, improved assembly efficiency and reduced labor intensity of workers; (2) on-site assembly does not involve any hot work, safety in use High, no pollution to the environment; (3) compact structure, small footprint, flexible storage volume, the number of tanks can be reasonably planned according to the reserve peak shaving scale.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a tank-type lng gas storage peak regulation device according to the present invention.

FIG. 2 is a schematic structural view of the top view of FIG. 1.

FIG. 3 is a schematic structural diagram of a hidden steel structure maintenance platform and a ladder in FIG. 2.

FIG. 4 is a schematic structural view of the right-view direction of FIG. 1.

5 is a schematic structural diagram of a single tank box after the steel structure platform and the ladder are hidden in FIG. 4.

FIG. 6 is a schematic view of the three-dimensional structure of FIG. 1.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6, the described tank-type lng gas storage peak-shaving device includes a plurality of stacked tanks 1, which are stacked together. Adjacent tank boxes are detachably fixedly connected together by locking bolts 2. Each tank box 1 is a standard container frame 11 surrounded by a bottom beam, a column and a top beam, and is welded and fixed to the standard container frame 11 The low-temperature liquid storage tank 12 in each tank box 1 is connected to the gas-phase manifold 4 through a gas-phase valve tube group 3, and the gas-phase valve tube group 3 is used for The gas-phase port of the liquid storage tank 12 is connected with the gas-phase manifold 4 with a valve connecting pipe; the liquid inlet of the low-temperature liquid storage tank 12 in each tank box 1 is connected to the liquid-intake valve group 5 and the liquid-intake manifold 6 The liquid inlet valve tube group 5 is a connecting pipe fitting with a valve for connecting the liquid inlet of the low temperature liquid storage tank 12 and the liquid inlet manifold 6; the low temperature liquid storage tank 12 in each tank box 1 The liquid outlets are respectively connected to the liquid outlet manifold 8 through a liquid outlet valve tube group 7, which is used for The cryogenic liquid storage tank 12 and the liquid outlet pipe 8 is connected to the liquid pipe bus in communication with a valve;

In this embodiment, a temperature sensor, a temperature transmitter, a differential pressure transmitter, a pressure transmitter, a pressure display instrument, and a liquid level display instrument are provided on the cryogenic liquid storage tank of each tank box; and Gas phase inlets, liquid inlets, liquid outlets on each cryogenic liquid storage tank in each tank, gas phase valve groups, liquid inlet valve groups, liquid outlet valve groups, temperature sensors, temperature transmitters, Differential pressure transmitter, pressure transmitter, pressure display instrument and liquid level display instrument are located on the same side, which is convenient for management and operation;

In this embodiment, a steel structure maintenance platform 9 is provided on each side of the tank box on each side, and the steel structure maintenance platform 9 is connected with each gas-phase valve tube group 3 and each liquid inlet valve tube. Group 5 and each outlet valve tube group 7 are located on the same side. The steel structure maintenance platform 9 is connected and fixed to the standard container frame of this layer of tank boxes by a number of locking bolts; A ladder 10 is provided between the platforms 9 to facilitate the staff to climb from the steel structure maintenance platform to the steel structure maintenance platform. The ladder 10 is connected and fixed to the standard container frame of the corresponding tank by a plurality of locking bolts. Through the horizontal steel structure maintenance platform and the vertical ladder, it can not only increase the overall connection stability of the equipment, improve the safety of use, but also facilitate the workers to install and repair the tanks. At the same time, the steel structure platform and the ladder are both It is connected by bolts, which does not involve hot work such as welding, which further improves the safety of use;

During installation, first calculate the required number of tank boxes according to the volume of lng to be stored, and then stack and stack each of the pre-made tank boxes at the construction site, and fix each tank box 1 with locking bolts 2 Together, then the gas phase ports of the cryogenic liquid storage tank 12 in each tank box 1 are communicated with the gas phase manifold 4 through the gas phase valve tube group 3, respectively, and the liquid inlets of the low temperature liquid storage tank 12 in each tank box 1 are connected. The liquid inlet valve tube group 5 is connected to the liquid inlet manifold 6 respectively, and the liquid outlets of the low-temperature liquid storage tank 12 in each tank 1 are connected to the liquid outlet manifold 8 through the liquid outlet valve tube group 7 respectively; On each side of the tank box connected to the valve tube group, a steel structure maintenance platform 9 is provided across the tank box on the left and right. The steel structure maintenance platform 9 is connected to the standard container frame of the tank box on the layer by a plurality of locking bolts. Fixed; and between the two adjacent steel structure maintenance platforms 9 above and below is provided a ladder 10 which is convenient for the staff to climb from the steel structure maintenance platform to the steel structure maintenance platform, and the ladder 10 is also locked by several Standard set of bolts and corresponding tanks The frame is connected to the fixed box, to complete the assembly peaking gas storage apparatus.

The advantages of the invention are: (1) convenient on-site assembly and disassembly, improved assembly efficiency and reduced labor intensity; (2) on-site assembly does not involve any hot work, high safety in use, and no pollution to the environment; 3) The structure is compact, the floor space is small, and the reserve volume is flexible. The number of tanks can be reasonably planned according to the reserve peak shaving scale.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any other form. Any modification or equivalent change made according to the technical essence of the present invention still falls within the protection scope of the present invention.

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