CN213272034U

CN213272034U - Natural gas adsorbs storage jar

Info

Publication number: CN213272034U
Application number: CN202022319899.7U
Authority: CN
Inventors: 李曌然; 国丽荣; 李宝昌
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-05-25
Anticipated expiration: 2030-10-16

Abstract

A natural gas adsorption storage tank relates to a storage tank. The tank body is externally provided with a natural gas detector, a thermometer, an air inlet pipe, a pressure gauge, an air outlet pipe and a manhole, wherein the air inlet pipe is provided with an inlet valve, and the air outlet pipe is provided with an outlet valve; a heat storage layer is arranged in the wall of the tank body, four layers of metal nets are arranged in the tank body, and a composite natural gas adsorbent and an activated carbon layer are arranged between the two layers of metal nets at the upper end; a plurality of metal pipes are arranged between the two layers of metal nets at the lower end; the metal tubes are filled with heat storage materials, the inner bottom surface of the tank body is provided with a semiconductor temperature adjusting assembly, and the semiconductor temperature adjusting assembly is electrically connected with a power supply outside the tank body. The utility model discloses compact structure, occupation space is little, and the available desorption space of inhaling is big, and the mode that heat transfer efficiency high pass thermal storage material and semiconductor refrigeration piece combine reduces the natural gas in the storage tank adsorption and the thermal effect problem of desorption in-process, realizes adsorbing the storage to the high efficiency of natural gas.

Description

Natural gas adsorbs storage jar

Technical Field

The utility model relates to a storage jar, especially a natural gas adsorbs storage jar.

Background

With the development of economy and the advancement of science and technology, energy and environment are two outstanding social problems in the world today. As a new energy source in the twenty-first century, natural gas has the advantages of high heat value, small environmental pollution, high economic benefit and the like, and plays an important role in improving the energy structure, relieving the contradiction between energy supply and demand and improving the environmental quality. Natural gas is known as a novel environment-friendly energy source in twenty-first century as the third major energy source following coal and petroleum.

As a clean energy source, natural gas increasingly shows its unique advantages for use as a vehicle fuel. The engine not only can reduce the transportation cost, but also can improve the heat efficiency of the engine and prolong the service life of the engine. The storage state is at normal temperature and medium and low pressure, and is especially suitable for vehicles. The burning Adsorption Natural Gas (ANG) technology is a technology of loading a special adsorbent with high specific surface area and rich microporous structure (the aperture is less than 3nm) into a gas storage tank to adsorb and store natural gas, and the technology has the advantages of large adsorption and storage capacity and fast storage.

However, the adsorption and desorption efficiency of natural gas, and the amount and release of stored gas are seriously affected by the exothermic effect during the adsorption process and the endothermic effect during the desorption process of natural gas. The main bottleneck problem that the natural gas is applied to the car is adsorbed to store at present, does not have the adverse effect of fine solution absorption desorption process heat effect: on one hand, the gas filling adsorption process finished in the gas filling station is a heat release process, and the system must be cooled; on the other hand, the deflation desorption process completed during the running of the automobile needs to absorb heat, and the heat must be supplemented to the system. Therefore, a heat exchange device must be arranged in the adsorption container to timely bring heat out of the container during adsorption and timely introduce heat into the container during desorption.

In contrast, in the existing adsorption storage process, water is mostly used as a cooling/heating medium, and although the process technology is simple, the heat transfer efficiency is low, a heat exchange system is huge, and a water resource needs to be supplied to a working site. Some other processes improve the problem brought by the heat effect by arranging heating equipment in the natural gas adsorption storage tank, but most of introduced equipment can only improve one of the problems of the heat effect brought by adsorption and desorption, namely, two problems of refrigeration and heat supply cannot be solved by one equipment, and the heat insulation layer around some equipment is thicker and occupies larger space, so that the available space in the natural gas adsorption and desorption processes is reduced.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the background art, the utility model provides a natural gas adsorbs storage jar.

The purpose is achieved, the utility model adopts the following technical proposal: a natural gas adsorption storage tank comprises a tank body, a natural gas detector, a thermometer, an inlet valve, an air inlet pipe, a pressure gauge, an outlet valve, an air outlet pipe, a manhole, a heat storage layer, a composite natural gas adsorbent, an activated carbon layer, a power supply, a semiconductor temperature adjusting assembly, four layers of metal nets and a plurality of metal pipes; the outer wall of the tank body is provided with a natural gas detector, a thermometer, an air inlet pipe, a pressure gauge, an air outlet pipe and a manhole, wherein the air inlet pipe is provided with an inlet valve, and the air outlet pipe is provided with an outlet valve; a heat storage layer is arranged inside the tank wall of the tank body, four layers of metal nets are fixed inside the tank body from top to bottom, a composite natural gas adsorbent and an activated carbon layer are laid between the two layers of metal nets at the upper end, and the composite natural gas adsorbent is laid above the activated carbon layer; a plurality of metal pipes are arranged between the two layers of metal nets at the lower end; the heat storage materials are filled in the metal pipes, the semiconductor temperature adjusting assembly is arranged on the inner bottom surface of the tank body, and the semiconductor temperature adjusting assembly is electrically connected with a power supply outside the tank body.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses compact structure, occupation space is little, and the available desorption space of inhaling is big, and the mode that heat transfer efficiency high pass thermal storage material and semiconductor refrigeration piece combine reduces the natural gas in the storage tank adsorption and the thermal effect problem of desorption in-process, realizes adsorbing the storage to the high efficiency of natural gas.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a side view of fig. 1.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

The first embodiment is as follows: as shown in fig. 1-2, the utility model discloses a natural gas adsorption storage tank, which comprises a tank body 1, a natural gas detector 2, a thermometer 3, an inlet valve 4, an air inlet pipe 5, a pressure gauge 6, an outlet valve 7, an air outlet pipe 8, a manhole 9, a heat storage layer 10, a composite natural gas adsorbent 12, an activated carbon layer 13, a power supply 21, a semiconductor temperature adjusting component, four layers of metal nets 11 and a plurality of metal pipes 14; the upper end of the outer wall of the tank body 1 is preferably provided with a natural gas detector 2, a thermometer 3, an air inlet pipe 5, a pressure gauge 6, an air outlet pipe 8 and a manhole 9, the air inlet pipe 5 is provided with an inlet valve 4, and the air outlet pipe 8 is provided with an outlet valve 7; the air inlet pipe 5 and the air outlet pipe 8 are connected with the tank body 1 through a flange plate, and a sealing gasket is arranged in the flange plate; the natural gas detector 2 can detect the purity and other numerical values of the natural gas in real time; the thermometer 3 can display the temperature in the tank body 1 in real time; the gas inlet pipe 5 and the inlet valve 4 enable natural gas to enter the tank body 1; the pressure gauge 6 can display the pressure in the tank body 1 in real time; the natural gas flows out of the tank body 1 through the gas outlet pipe 8 and the outlet valve 7; the manhole 9 is used by workers for loading and unloading of the metal mesh 11, the compound natural gas adsorbent 12, the activated carbon 13 and the metal pipe 14; the heat storage layer 10 is arranged inside the tank wall of the tank body 1, and the heat storage layer 10 has strong heat storage capacity, so that the temperature stability of natural gas in the adsorption and heat release processes can be ensured, and the phenomenon that the adsorption effect is influenced by overheating in the tank body is prevented; four layers of metal nets 11 are fixed inside the tank body 1 from top to bottom, a compound natural gas adsorbent 12 and an activated carbon layer 13 are laid between the two layers of metal nets 11 at the upper end, and the left end and the right end of each of the two layers of metal nets 11 are fixedly connected with the left end and the right end of the inner wall of the tank body 1; the compound natural gas adsorbent 12 is an activated carbon/expanded graphite compound adsorbent, namely a compound adsorbent prepared by proportionally preparing expanded graphite and activated carbon, the activated carbon layer 13 and the compound natural gas adsorbent 12 are used for adsorbing natural gas, and the compound natural gas adsorbent 12 has good thermal conductivity and high permeability; the compound natural gas adsorbent 12 is laid above the activated carbon layer 13; a plurality of metal pipes 14 are arranged between the two layers of metal nets 11 positioned at the lower end; the front end and the rear end of the two layers of metal nets 11 are fixedly connected with the left end and the right end of the inner wall of the tank body 1; the metal mesh 11 has the main functions of accelerating mass transfer and heat transfer during natural gas adsorption and desorption and accelerating the inflation and deflation rates; the plurality of metal tubes 14 are filled with a heat storage material 15, and the heat storage material 15 absorbs and stores heat when inflated and can release and provide heat when deflated. The temperature in the storage tank during natural gas adsorption and desorption can be adjusted to reduce the heat effect and improve the storage and transportation efficiency; the interior bottom surface of jar body 1 is equipped with the semiconductor subassembly that adjusts the temperature, the semiconductor subassembly that adjusts the temperature is connected with jar body 1 outside power 21 electricity, and power 21 and semiconductor refrigeration piece 18 electric connection, the accessible adjusts just, the negative pole that semiconductor refrigeration piece 18 and power 21 are connected and carries out the conversion of refrigeration face and heat supply face.

The second embodiment is as follows: in this embodiment, the first embodiment is further described, in which the heat storage layer 10 and the heat storage substance 15 each include expanded graphite and paraffin; the expanded graphite is a base material, the paraffin is a phase-change material, the paraffin is adsorbed in the pore canal of the expanded graphite, and the expanded graphite/paraffin composite phase-change heat storage material with different proportions is prepared by adopting a melting mixing method, so that the heat storage layer 10 and the heat storage substance 15 filled with the phase-change material have high heat conductivity, the original solid state can be kept in the phase-change process, a special sealing device is not needed, and other parts in the storage tank cannot be influenced.

The third concrete implementation mode: in the first or second embodiment, the composite natural gas adsorbents 12 are uniformly and alternately laid above the activated carbon layer 13, and gaps are left between adjacent composite natural gas adsorbents 12 by the alternate laying, so that the adsorption effect is better exerted.

The fourth concrete implementation mode: in this embodiment, the third embodiment is further described, and the plurality of metal pipes 14 are uniformly distributed between the two layers of metal nets 11 located at the lower end.

The fifth concrete implementation mode: as shown in fig. 2, the present embodiment is further explained with respect to the fourth embodiment, and the plurality of metal pipes 14 are arranged in an arc shape along the circumferential direction of the longitudinal section of the tank body 1.

The sixth specific implementation mode: as shown in fig. 1 and 2, the present embodiment is further described with respect to the first or fifth embodiment, the semiconductor temperature adjustment assembly includes an inner temperature conducting plate 16, a semiconductor cooling plate 18, an outer temperature conducting plate 19, an inner fin, an outer fin, and two insulating layers 17; interior temperature guide plate 16, semiconductor refrigeration piece 18 and outer temperature guide plate 19 stack the setting from top to bottom, and all be equipped with insulating layer 17 between interior temperature guide plate 16 and the semiconductor refrigeration piece 18 and between semiconductor refrigeration piece 18 and the outer temperature guide plate 19, and the upside of interior temperature guide plate 16 is equipped with interior fin, the downside of outer temperature guide plate 19 is equipped with outer fin.

The semiconductor temperature adjusting component can adjust the positive pole and the negative pole connected with the power supply as required, so that the cold end and the hot end of the semiconductor temperature adjusting component are changed, and the purposes of quick refrigeration during natural gas adsorption and quick heat supply during natural gas desorption are achieved.

The seventh embodiment: as shown in fig. 1 and 2, in the present embodiment, a sixth specific embodiment is further described, the semiconductor temperature adjustment assembly further includes a nanometer airbag reflection layer 20, the nanometer airbag reflection layer 20 is attached to the lower end of the semiconductor refrigeration sheet 18, and the nanometer airbag reflection layer 20 is equivalent to a heat insulation layer, so that a good heat insulation effect is achieved, a space is saved compared with a common heat insulation material, and a larger utilization space is provided for a process of absorbing and desorbing natural gas.

When aerifing, open inlet valve 4 of intake pipe 5 below, make the natural gas get into jar body 1, because the existence of thermal effect, the heat that emits when the natural gas holder adsorbs the natural gas takes place the phase transition by the heat accumulation material 15 of dress in tubular metal resonator 14 and absorbs, thereby increase the gas storage volume of natural gas holder (the tubular metal resonator 14 that is equipped with heat accumulation material 15 in the natural gas adsorption storage tank forms half surrounding structure below compound natural gas adsorbent 12 and active carbon 13, make the better performance of heat accumulation material 15, manometer 6 shows tank interior pressure simultaneously, thermometer 3 shows tank interior temperature, reach certain numerical value when pressure, open outlet valve 7 below outlet duct 8, the natural gas adsorbed by compound natural gas adsorbent 12 flows to gas outlet 8 after outwards drawing forth.

After multiple times of inflation and deflation, if the adsorption capacity of the composite natural gas adsorbent 12 is reduced, the composite natural gas adsorbent 12 can be unloaded through the manhole 9, and the composite natural gas adsorbent 12 is functionally regenerated by a heating method, so that the operation is convenient. When natural gas is adsorbed, the positive electrode and the negative electrode connected with the semiconductor refrigerating sheet 18 and the power supply 21 at the bottom of the tank body 1 are adjusted simultaneously, so that the upward end of the semiconductor refrigerating sheet 18 is a cold end, and the interior of the tank body 1 is cooled through the inner fins on the inner heat conducting plate 16, so that the problem of adsorption and heat release is solved; when natural gas is desorbed, the positive electrode and the negative electrode which are connected with the semiconductor refrigeration piece 18 and the power supply 21 are reversely connected, so that the upward end of the semiconductor refrigeration piece 18 is a hot end, and heat is transferred to the interior of the tank body 1 through the inner fins on the inner heat conducting plate 16, thereby improving the desorption and heat absorption problems.

And the bottom of the tank body 1 is provided with a nanometer air bag reflecting layer 20, and the heat-insulating layer is tightly attached to the bottom semiconductor refrigerating sheet 18, so that a good heat-insulating effect is achieved, the space is saved compared with that of a common heat-insulating material, and a larger utilization space is provided for the process of absorbing and desorbing natural gas. The heat effect of natural gas in the adsorption and desorption processes in the storage tank is greatly reduced by combining the heat storage substance 15 with the semiconductor refrigeration sheet 18.

Natural gas adsorb storage mode, do not receive the restriction in region, be applicable to various types and the storage tank of size, also be applicable to large-scale gas storage station and store gaseous the use. The utility model provides a device practicality is extremely strong, especially adapted popularization and application on market.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A natural gas adsorption storage tank comprises a tank body (1), a natural gas detector (2), a thermometer (3), an inlet valve (4), an air inlet pipe (5), a pressure gauge (6), an outlet valve (7), an air outlet pipe (8) and a manhole (9); the natural gas detection tank is characterized in that a natural gas detector (2), a thermometer (3), an air inlet pipe (5), a pressure gauge (6), an air outlet pipe (8) and a manhole (9) are arranged on the outer wall of the tank body (1), an inlet valve (4) is arranged on the air inlet pipe (5), and an outlet valve (7) is arranged on the air outlet pipe (8); the method is characterized in that: the storage tank further comprises a heat storage layer (10), a compound natural gas adsorbent (12), an activated carbon layer (13), a power supply (21), a semiconductor temperature adjusting component, four layers of metal nets (11) and a plurality of metal pipes (14); a heat storage layer (10) is arranged inside the tank wall of the tank body (1), four layers of metal nets (11) are fixed inside the tank body (1) from top to bottom, a composite natural gas adsorbent (12) and an activated carbon layer (13) are laid between the two layers of metal nets (11) at the upper end, and the composite natural gas adsorbent (12) is laid above the activated carbon layer (13); a plurality of metal pipes (14) are arranged between the two layers of metal nets (11) positioned at the lower end; the heat storage materials (15) are filled in the metal pipes (14), the semiconductor temperature adjusting assembly is arranged on the inner bottom surface of the tank body (1), and the semiconductor temperature adjusting assembly is electrically connected with a power supply (21) outside the tank body (1).

2. The natural gas adsorption storage tank of claim 1 wherein: the heat storage layer (10) and the heat storage substance (15) both comprise expanded graphite and paraffin; the expanded graphite is a base material, the paraffin is a phase-change material, and the paraffin is adsorbed in the pore channel of the expanded graphite.

3. A natural gas adsorption storage tank as claimed in claim 1 or 2, wherein: the composite natural gas adsorbent (12) is uniformly paved above the activated carbon layer (13) at intervals.

4. A natural gas adsorption storage tank as claimed in claim 3, wherein: the metal pipes (14) are uniformly distributed between two layers of metal nets (11) at the lower end.

5. The natural gas adsorption storage tank of claim 4 wherein: the metal pipes (14) are arranged in an arc shape along the circumferential direction of the longitudinal section of the tank body (1).

6. A natural gas adsorption storage tank as claimed in claim 1 or 5, wherein: the semiconductor temperature adjusting assembly comprises an inner temperature guide plate (16), a semiconductor refrigerating sheet (18), an outer temperature guide plate (19), inner fins, outer fins and two layers of insulating layers (17); interior temperature guide plate (16), semiconductor refrigeration piece (18) and lead temperature guide plate (19) outward and stack the setting from top to bottom, and lead in between temperature guide plate (16) and semiconductor refrigeration piece (18) and lead outside between temperature guide plate (19) all be equipped with insulating layer (17), the upside of interior temperature guide plate (16) is equipped with interior fin, the downside of leading temperature guide plate (19) outward is equipped with outer fin.

7. The natural gas adsorption storage tank of claim 6 wherein: the semiconductor temperature adjusting assembly further comprises a nanometer air bag reflecting layer (20), and the nanometer air bag reflecting layer (20) is attached to the lower end of the semiconductor refrigerating sheet (18).