Ethylene oxide storage tank with good cold insulation effect

Abstract

The utility model belongs to the technical field of ethylene oxide storage, and particularly relates to an ethylene oxide storage tank with a good cold insulation effect, which comprises an outer tank body, an inner tank body is arranged on the inner side of the outer tank body, an air cavity is arranged between the outer tank body and the inner tank body, and a tank opening pipe is communicated with one side of the upper side surface of the inner tank body and penetrates through the outer tank body to the upper side. The joint of the outer tank body and the tank opening pipe is sealed, connecting rings are symmetrically arranged between the outer tank body and the inner tank body in a supporting mode, vent holes are evenly formed in the side faces of the connecting rings in a penetrating mode, bases are symmetrically arranged on the lower side of the outer tank body, supporting blocks are symmetrically arranged on the two sides of each base, and a liquid nitrogen tank and a gas storage tank are arranged on the upper sides of the supporting blocks on the two sides respectively. And a liquid nitrogen pump is arranged at an output port of the liquid nitrogen tank. And the external environment of the inner tank body can be quickly refrigerated and cooled discontinuously, so that ethylene oxide can be kept in a safe storage temperature range for a long time through repeated refrigeration, and the transportation time of ethylene oxide is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ethylene oxide storage, and particularly relates to an ethylene oxide storage tank with good cold preservation effect. BACKGROUND

[0002] Ethylene oxide needs to be stored at low temperature. Ethylene oxide is a highly flammable and toxic hazardous product, and the storage temperature is crucial to its safety and stability. During the production and transportation of ethylene oxide, if ethylene oxide comes into contact with oxygen, a series of chemical reactions may be triggered, thereby affecting the product quality. Therefore, when transporting and storing ethylene oxide, the content of oxygen needs to be reduced. Filling nitrogen into the storage tank can effectively reduce the content of oxygen in the air in the tank and ensure the quality of ethylene oxide.

[0003] Although filling nitrogen can increase the stability of ethylene oxide transportation to a certain extent, ethylene oxide is also easily affected by temperature during transportation. Therefore, ethylene oxide can generally only be transported for a short distance. At present, although a jacketed tank can be provided to fill some liquid medium to keep the ethylene oxide in the inner tank warm, the effect of the heat preservation is still not long-lasting. By means of circulating refrigeration, the effect of the circulating refrigeration of the filling liquid in the jacket is also not satisfactory. In addition, the water tank needs to be equipped, which will occupy a large amount of transportation space of the transport vehicle. Therefore, we propose a storage tank which can intermittently perform efficient refrigeration for the storage environment of ethylene oxide, ensure that ethylene oxide is in a safe storage temperature range for a long time, and greatly increase the transportation time of ethylene oxide. UTILITARY MODEL CONTENT

[0004] In view of the above problems, the purpose of the utility model is to provide an ethylene oxide storage tank with good cold preservation effect, solve the problem that ethylene oxide is easily affected by temperature during transportation, and therefore ethylene oxide can generally only be transported for a short distance. We propose a storage tank which can intermittently perform efficient refrigeration for the storage environment of ethylene oxide, ensure that ethylene oxide is in a safe storage temperature range for a long time, and greatly increase the transportation time of ethylene oxide.

[0005] In order to achieve the above object, the utility model discloses the technical scheme that a kind of ethylene oxide storage tank with good cold insulation effect, including outer tank body, the inner side of outer tank body is provided with inner tank body, there is air cavity between outer tank body and inner tank body, the upper side of inner tank body one side is symmetrically provided with the tank mouth pipe of communication, the tank mouth pipe penetrates outer tank body to upper side, the junction of outer tank body and tank mouth pipe is sealed, the connection ring is symmetrically supported between outer tank body and inner tank body, the side of connection ring is evenly provided with the air vent of penetration, the lower side of outer tank body is symmetrically provided with base, the both sides of base are symmetrically provided with supporting block, the upper side of both sides supporting block is respectively provided with liquid nitrogen tank and gas storage tank, the output of liquid nitrogen tank is provided with liquid nitrogen pump, the upper end of liquid nitrogen pump is provided with connecting pipe one of communication, connecting pipe one is communicated with the air cavity of inner side of outer tank body, the input of gas storage tank is provided with control valve, the side of outer tank body away from liquid nitrogen tank is provided with compressor, the input of compressor is communicated with the air cavity of inner side of outer tank body, the output of compressor is communicated with control valve, the upper side of outer tank body is respectively provided with temperature sensor and pressure sensor, and temperature sensor and pressure sensor are all penetrated to the inner side of air cavity of outer tank body.

[0006] The utility model discloses the beneficial effect is: can intermittently to the outside environment of inner tank body is cooled down fast, to be able to repeatedly refrigeration guarantee that ethylene oxide is in safe storage temperature range for a long time, to greatly increase the transport time of ethylene oxide.

[0007] In order to carry out certain heat dissipation cooling treatment to the extracted nitrogen gas;

[0008] As the further improvement of the above technical scheme: the output of compressor is provided with condenser of communication, and the output of condenser is communicated with control valve.

[0009] The beneficial effect of the improvement is: setting condenser, can carry out certain heat dissipation cooling treatment to the extracted nitrogen gas, avoid the nitrogen gas temperature of being compressed into gas storage tank, lead to the compression storage of gas storage tank reduces.

[0010] In order to increase the heat dissipation effect of condenser;

[0011] As the further improvement of the above technical scheme: the upper side of outer tank body is provided with support plate away from the side of outlet, and the condenser is arranged on the upper side of support plate, and the compressor is arranged on the side of support plate.

[0012] The beneficial effect of the improvement is: when transporting, the airflow velocity of outer tank body upper side is greater, can quickly take away the heat absorbed by condenser, increase the heat dissipation effect of condenser.

[0013] In order to reduce the influence of external environment on the temperature in air cavity;

[0014] As a further improvement of the above technical solution: the inner side wall of the outer tank body is provided with a heat preservation layer.

[0015] The beneficial effect of the improvement is that the heat preservation effect in the air cavity is increased, and the influence of the external environment on the temperature in the air cavity is reduced.

[0016] In order to achieve the effect of controlled nitrogen discharge;

[0017] As a further improvement of the above technical solution: the gas storage tank is provided with a pressure relief valve away from the control valve.

[0018] The beneficial effect of the improvement is that the compressed nitrogen stored in the gas storage tank by the compressor is far lower than the converted nitrogen storage of the liquid nitrogen in the liquid nitrogen tank. When the compressed storage of the gas storage tank reaches a threshold during transportation, the pressure relief valve can be opened by the controller in the cab, and the compressed nitrogen in the gas storage tank can be released in an open area, so that the gas storage tank can be used as a temporary buffer container to temporarily store nitrogen in the air cavity during transportation, achieving the effect of controlled nitrogen discharge.

[0019] In order to facilitate the disassembly and fixation of the liquid nitrogen tank and the gas storage tank;

[0020] As a further improvement of the above technical solution: the upper side of the supporting block is provided with a screw rod, the upper end of the screw rod is inserted and connected with a fixing block, and the upper end of the screw rod is provided with a nut in threaded connection with the fixing block.

[0021] The beneficial effect of the improvement is that the nut is used to fix the fixing block, facilitating the disassembly and fixation of the liquid nitrogen tank and the gas storage tank.

[0022] In order to facilitate the rapid diffusion of liquid nitrogen in the air cavity inside the outer tank body;

[0023] As a further improvement of the above technical solution: the upper end of the connecting pipe one is communicated with a long pipe, the side surface of the long pipe is uniformly communicated with branch pipes, and the branch pipes are communicated with the air cavity inside the outer tank body.

[0024] The beneficial effect of the improvement is that the liquid nitrogen can be rapidly diffused in the air cavity inside the outer tank body.

[0025] The parts not involved in the device are the same as or can be realized by the existing technology. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the present application Figure One ;

[0027] Figure 2 Structure diagram of the present application Figure Two ;

[0028] Figure 3 The structure top view of the utility model;

[0029] Figure 4 The inside structure section view of the utility model;

[0030] In the figure: 1, outer tank body; 2, inner tank body; 3, tank mouth pipe; 4, connecting ring; 5, air vent; 6, base; 7, supporting block; 8, liquid nitrogen tank; 9, liquid nitrogen pump; 10, connecting pipe one; 11, gas storage tank; 12, compressor; 13, control valve; 14, condenser; 15, screw rod; 16, fixed block; 17, nut; 18, long pipe; 19, temperature sensor; 20, pressure sensor; 21, pressure relief valve; 22, heat preservation layer. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the technical scheme of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0032] As Figure 1 — Figure 4The utility model discloses an ethylene oxide storage tank with good cold insulation effect, which comprises an outer tank body 1, an inner tank body 2 arranged on the inner side of the outer tank body 1, an air cavity between the outer tank body 1 and the inner tank body 2, a tank mouth pipe 3 arranged on one side of the upper side of the inner tank body 2 in a communicating manner, the tank mouth pipe 3 penetrating through the outer tank body 1 to the upper side, the connection part of the outer tank body 1 and the tank mouth pipe 3 being sealed, a connecting ring 4 arranged between the outer tank body 1 and the inner tank body 2 in a symmetrical supporting manner, air vents 5 evenly arranged on the side of the connecting ring 4, a base 6 arranged on the lower side of the outer tank body 1 in a symmetrical manner, a supporting block 7 arranged on both sides of the base 6 in a symmetrical manner, a liquid nitrogen tank 8 and a gas storage tank 11 arranged on the upper side of the supporting block 7 respectively, an output port of the liquid nitrogen tank 8 being provided with a liquid nitrogen pump 9, the upper end of the liquid nitrogen pump 9 being arranged in a communicating manner with a connecting pipe I 10, the connecting pipe I 10 being in communication with the air cavity on the inner side of the outer tank body 1, an input port of the gas storage tank 11 being provided with a control valve 13, one side of the outer tank body 1 away from the liquid nitrogen tank 8 being provided with a compressor 12, the input end of the compressor 12 being in communication with the air cavity on the inner side of the outer tank body 1, the output end of the compressor 12 being in communication with the control valve 13, the upper side of the outer tank body 1 being provided with a temperature sensor 19 and a pressure sensor 20 respectively, the temperature sensor 19 and the pressure sensor 20 penetrating through the outer tank body 1 to the inner side of the air cavity, the temperature sensor 19 and the pressure sensor 20 can intermittently and rapidly cool and lower the temperature of the external environment of the inner tank body 2, so that the ethylene oxide can be repeatedly cooled to ensure that the ethylene oxide is in a safe storage temperature range for a long time, thereby greatly increasing the transportation time of the ethylene oxide, the output end of the compressor 12 being arranged in a communicating manner with a condenser 14, the output end of the condenser 14 being in communication with the control valve 13, the condenser 14 being arranged, the extracted nitrogen gas can be cooled and lowered in temperature to a certain extent, so that the temperature of the nitrogen gas compressed into the gas storage tank 11 is not too high, thereby reducing the compression storage capacity of the gas storage tank 11, the upper side of the outer tank body 1 being arranged in parallel with a supporting plate on the side away from the tank mouth, the condenser 14 being arranged on the upper side of the supporting plate, the compressor 12 being arranged on the side of the supporting plate, when transporting, the air flow rate on the upper side of the outer tank body 1 is high, so that the heat absorbed by the condenser 14 can be rapidly taken away, thereby increasing the heat dissipation effect of the condenser 14, the inner wall of the outer tank body 1 being provided with a heat preservation layer 22, the heat preservation effect in the air cavity is increased, and the influence of the external environment on the temperature in the air cavity is reduced, one side of the gas storage tank 11 away from the control valve 13 being provided with a pressure relief valve 21, the compressed nitrogen gas stored in the gas storage tank 11 by the compressor 12 is far lower than the conversion nitrogen gas storage capacity of the liquid nitrogen in the liquid nitrogen tank 8, when the compression storage capacity of the gas storage tank 11 reaches a threshold value during transportation, the pressure relief valve 21 can be opened by a controller in the cab, the compressed nitrogen gas in the gas storage tank 11 can be released in an open area, so that the gas storage tank 11 can be used as a temporary buffer container to temporarily store the nitrogen gas in the air cavity during transportation, thereby achieving the effect of controlled external discharge of nitrogen gas, the upper side of the supporting block 7 being provided with a screw rod 15 at four corners, the upper end of the screw rod 15 being inserted and connected with a fixing block 16,The upper end of the screw rod 15 is provided with a nut 17 in thread through the fixed block 16, the nut 17 is arranged to fix the fixed block 16, the liquid nitrogen tank 8 and the gas storage tank 11 are convenient to disassemble and fix, the upper end of the connecting pipe one 10 is communicated with a long pipe 18, the side of the long pipe 18 is uniformly communicated with branch pipes, the branch pipes are communicated with the inside gas cavity of the outer tank body 1, and the liquid nitrogen is convenient to rapidly spread in the inside gas cavity of the outer tank body 1.

[0033] The working principle and use process of the utility model are as follows:

[0034] In use, the low-temperature treated ethylene oxide is added into the inner tank body 2 through the tank mouth pipe 3, then nitrogen is introduced into the inner tank body 2, and then the tank mouth pipe 3 is sealed. Under normal nitrogen filling treatment, the ethylene oxide can be transported within two hundred kilometers under the transportation environment of 34 degrees Celsius. During transportation, the air cavity is connected with the inner tank body 2, and the temperature of the air cavity is generally higher than that of the ethylene oxide in the inner tank body 2 due to the influence of the external environment. The temperature in the air cavity can be monitored by the temperature sensor 19. When the temperature in the air cavity rises to a certain extent, the liquid nitrogen pump 9 is temporarily opened, and the liquid nitrogen in the liquid nitrogen tank 8 is sent into the air cavity in the outer tank body 1 through the connecting pipe one 10. The liquid nitrogen entering the outer tank body 1 will evaporate rapidly and absorb heat, which will rapidly reduce the temperature in the air cavity, so that the ethylene oxide in the inner tank body 2 is re-placed in a low-temperature environment. The air cavity is inside the outer tank body 1, and the nitrogen gas formed after the evaporation of the liquid nitrogen can act as a low-temperature gas medium for a period of time. On the one hand, it can cool the ethylene oxide in the inner tank body 2, and on the other hand, it can isolate the influence of the external environment on the ethylene oxide in the inner tank body 2. After a period of time, when the temperature in the air cavity rises to a certain extent again, the above process is repeated. When the pressure sensor 20 monitors that the air pressure in the air cavity reaches a certain extent, the compressor 12 starts to extract the nitrogen gas in the inner tank body 2 and compresses it into the gas storage tank 11 for storage. Thus, the external environment of the inner tank body 2 can be intermittently and rapidly cooled, so that the ethylene oxide can be repeatedly cooled to ensure that it is in a safe storage temperature range for a long time, thereby greatly increasing the transportation time of the ethylene oxide. In addition, in use, the output end of the compressor 12 is communicated with the condenser 14, the output end of the condenser 14 is communicated with the control valve 13, and the condenser 14 is arranged. The extracted nitrogen gas can be cooled and cooled to a certain extent to avoid the high temperature of the nitrogen gas compressed into the gas storage tank 11, which reduces the compression storage capacity of the gas storage tank 11. In addition, the condenser 14 is arranged above the outer tank body 1 through the compressor 12. During transportation, the airflow velocity on the upper side of the outer tank body 1 is high, which can quickly take away the heat absorbed by the condenser 14, thereby increasing the heat dissipation effect of the condenser 14. In addition, in use, the inner side wall of the outer tank body 1 is provided with a heat preservation layer 22 to increase the heat preservation effect in the air cavity and reduce the influence of the external environment on the temperature in the air cavity. In addition, in use, the side of the gas storage tank 11 away from the control valve 13 is provided with a pressure relief valve 21. The compressed nitrogen gas stored in the gas storage tank 11 through the compressor 12 is far lower than the converted nitrogen gas storage capacity of the liquid nitrogen in the liquid nitrogen tank 8. When the compression storage capacity of the gas storage tank 11 reaches a threshold value during transportation, the control valve 21 can be opened by the controller in the cab to release the compressed nitrogen gas in the gas storage tank 11 in an open area. Thus, the gas storage tank 11 can be used as a temporary buffer container to temporarily store the nitrogen gas in the air cavity during transportation, thereby achieving the effect of controlled nitrogen gas discharge. In addition, in use, the upper four corners of the supporting block 7 are provided with screw rods 15, the upper ends of the screw rods 15 are inserted and connected with fixing blocks 16,The upper end of the screw rod 15 is provided with a nut 17 through the fixed block 16, the nut 17 is arranged to fix the fixed block 16, the liquid nitrogen tank 8 and the gas storage tank 11 are convenient to disassemble and fix, in addition, the upper end of the connecting pipe 10 is communicated with a long pipe 18, the side of the long pipe 18 is uniformly communicated with a branch pipe, the branch pipe is communicated with the inside gas cavity of the outer tank body 1, the liquid nitrogen is convenient to rapidly spread in the inside gas cavity of the outer tank body 1.

[0035] It should be noted that in this text, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0036] The principles and implementation modes of the present application are described by applying specific examples in this text, the above example is only used to help understand the method of the present application and its core idea. The above description is only the preferred embodiment of the present application, it should be pointed out that, due to the limited expression of the text, there are infinite specific structures objectively, for the ordinary skilled in the art, on the premise of not departing from the principle of the present application, a number of improvements, refinements or changes can be made, the above technical features can also be combined in a proper way, these improvements, refinements, changes or combinations, or the present application without improvement, the concept and technical scheme of the present application are directly applied to other occasions, all should be regarded as the protection scope of the present application.

Claims

1. An ethylene oxide storage tank with good cold insulation effect, characterized in that: The utility model provides a kind of liquid nitrogen tank, including outer tank (1), the inner side of outer tank (1) is provided with inner tank (2), there is air cavity between outer tank (1) and inner tank (2), the upper side of inner tank (2) is symmetrically supported and is provided with connecting ring (4) between outer tank (1) and inner tank (2), the side of connecting ring (4) is evenly provided with air vent (5) through, the lower side of outer tank (1) is symmetrically provided with base (6), the both sides of base (6) are symmetrically provided with supporting block (7), the upper side of both sides supporting block (7) is provided with liquid nitrogen tank (8) and gas storage tank (11) respectively, the output of liquid nitrogen tank (8) is provided with liquid nitrogen pump (9), the upper end of liquid nitrogen pump (9) is connected and is provided with connecting pipe one (10), connecting pipe one (10) is communicated with the air cavity of outer tank (1) inside, the input of gas storage tank (11) is provided with control valve (13), the side of outer tank (1) away from liquid nitrogen tank (8) is provided with compressor (12), the input of compressor (12) is communicated with the air cavity of outer tank (1) inside, the output of compressor (12) is communicated with control valve (13), the upper side of outer tank (1) is provided with temperature sensor (19) and pressure sensor (20) respectively, temperature sensor (19) and pressure sensor (20) are all through outer tank (1) to the inside of air cavity.

2. The ethylene oxide storage tank of claim 1, wherein: The output of the compressor (12) is communicated and is provided with condenser (14), and the output of the condenser (14) is communicated with the control valve (13).

3. The ethylene oxide storage tank of claim 2, wherein: The upper side of the outer tank (1) is provided with a support plate, and the condenser (14) is arranged on the upper side of the support plate, and the compressor (12) is arranged on the side of the support plate.

4. The ethylene oxide storage tank of claim 1, wherein: The inner wall of the outer tank (1) is provided with a thermal insulation layer (22).

5. The ethylene oxide storage tank of claim 1, wherein: The side of the gas storage tank (11) away from the control valve (13) is provided with a pressure relief valve (21).

6. The ethylene oxide storage tank of claim 1, wherein: The upper side of the supporting block (7) is provided with a screw rod (15), and the upper end of the screw rod (15) is inserted and connected with a fixed block (16).

7. The ethylene oxide storage tank of claim 1, wherein: The upper end of the connecting pipe one (10) is communicated and is provided with a long pipe (18), and the side of the long pipe (18) is evenly communicated with a branch pipe. The upper end of the connecting pipe one (10) is communicated and is provided with a long pipe (18), and the side of the long pipe (18) is evenly communicated with a branch pipe.

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