Low-temperature liquid oxygen gasification oxygen supply system

Abstract

The utility model relates to a low-temperature liquid oxygen gasification oxygen supply system, which is applied to the technical field of liquid gasification, solves the problem that production safety accidents are easily caused when ungasified liquid oxygen is conveyed to a user side in the existing liquid oxygen gasification system, and comprises a liquid oxygen storage tank, a gasification component, a first liquid oxygen pump, a control component and an oxygen conveying pipe, the oxygen delivery pipe is provided with an oxygen temperature detector, an oxygen pressure detector, a temperature and pressure compensation flowmeter, an oxygen check valve and an oxygen control valve; the control assembly comprises a signal receiving unit, a data comparison unit and an instruction output unit. The oxygen temperature detector, the oxygen pressure detector, the temperature and pressure compensation flowmeter, the first liquid oxygen pump, the oxygen check valve and the oxygen control valve are all in signal connection with the control assembly. The liquid oxygen gasification system has the advantages that when it is detected that liquid oxygen is not completely gasified, the first liquid oxygen pump and the oxygen control valve are controlled to be closed, the whole liquid oxygen gasification system is shut down, liquid oxygen is prevented from entering a user side through the oxygen conveying pipe to cause production accidents, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid gasification technical field, in particular to a kind of low-temperature liquid oxygen gasification oxygen supply system. BACKGROUND

[0002] With the continuous expansion of company production scale and the improvement of blast furnace ironmaking, converter steelmaking capacity, the application of oxygen in smelting process production is more and more widely, and the demand for oxygen is increasing, and the existing liquid oxygen gasification system is usually used to quickly gasify liquid oxygen into oxygen to meet the production needs of the production needs (user end).

[0003] The existing patent announcement number "CN103423589B" announces a kind of liquid oxygen gasification system and process of coke oven gas methanol process, and its structure is: the air separation section in the coke oven gas methanol process is communicated with conversion section by oxygen compressor, and it further includes liquid oxygen storage tank and gasifier;The inlet of liquid oxygen storage tank, gasifier and oxygen compressor is sequentially communicated by pipeline.

[0004] The above description has the following problems, namely that the oxygen after gasification is directly delivered to user end, when the liquid oxygen gasification system fails and is not detected or timely repaired, liquid oxygen cannot be completely gasified, and when the ungasified liquid oxygen is delivered to user end, production safety accident is easily caused. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of low-temperature liquid oxygen gasification oxygen supply system, solve the problem that the existing liquid oxygen gasification system fails and is not detected or timely repaired, liquid oxygen cannot be completely gasified, and when the ungasified liquid oxygen is delivered to user end, production safety accident is easily caused.

[0006] To achieve the above purpose, the utility model adopts the technical scheme that:

[0007] The utility model provides a kind of low-temperature liquid oxygen gasification oxygen supply system, including liquid oxygen storage tank, gasification component, for the liquid oxygen in the liquid oxygen storage tank is delivered to the conveying component and control component in the gasification component;

[0008] The conveying component includes second conveying pipe and first liquid oxygen pump arranged on the second conveying pipe;

[0009] The oxygen output of the gasification component is provided with oxygen conveying pipe for conveying oxygen to user end, and oxygen temperature detection meter, oxygen pressure detection meter, temperature and pressure compensation flow meter, oxygen check valve and oxygen control valve are sequentially arranged on the oxygen conveying pipe along the oxygen conveying direction;

[0010] The control assembly comprises a signal receiving unit, a data comparison unit and an instruction output unit, signal output ends of the oxygen temperature detector, the oxygen pressure detector and the temperature-pressure compensation flowmeter are signal connected with the signal receiving unit, the first liquid oxygen pump, the oxygen check valve and the oxygen control valve are signal connected with the instruction output unit.

[0011] Further, an oxygen drainage pipe is arranged on the oxygen delivery pipe between the oxygen check valve and the oxygen control valve, an oxygen discharge valve is arranged on the oxygen drainage pipe, a signal receiving end of the oxygen discharge valve is signal connected with the instruction output unit.

[0012] Further, the oxygen temperature detector is provided with three, the three temperature detectors are uniformly distributed along the oxygen delivery pipe, signal output ends of the three oxygen temperature detectors are signal connected with the signal receiving unit.

[0013] Further, an explosion-proof wall is further included, the oxygen delivery pipe passes through the explosion-proof wall, and the oxygen check valve, the oxygen control valve and the oxygen discharge valve arranged on the oxygen delivery pipe are located in the explosion-proof wall.

[0014] Further, the gasification assembly comprises a shell, at least one coil pipe arranged in the shell and penetrating into liquid oxygen, a medium delivery pipe for delivering heat exchange medium into the shell and a steam delivery pipe for heating the heat exchange medium, one end of the coil pipe is arranged at a bottom end of one side of the shell and connected with the liquid outlet of the delivery assembly, the other end of the coil pipe is arranged at an upper portion of the shell and extends out of the shell and is connected with the oxygen delivery pipe, the medium delivery pipe is arranged at a bottom portion of the shell, the steam delivery pipe is arranged at a top portion of the shell, and an air inlet end of the steam delivery pipe extends into the shell and is located at the upper portion of the shell.

[0015] Further, the shell is provided with a temperature detection member, the temperature detection member comprises a steam temperature detector arranged on the shell and a steam regulating valve arranged on the steam pipe, a signal output end of the steam temperature detector is signal connected with the signal receiving unit, and the steam regulating valve is signal connected with the instruction output unit.

[0016] Further, the shell is provided with a liquid level detection member, the liquid level detection member comprises an upper liquid level detector and a lower liquid level detector arranged on the shell, a water replenishment pneumatic valve is arranged on the medium delivery pipe, signal output ends of the upper liquid level detector and the lower liquid level detector are signal connected with the signal receiving unit, and the water replenishment pneumatic valve is signal connected with the instruction output unit.

[0017] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0018] The low-temperature liquid oxygen gasification oxygen supply system has the advantages that when the first liquid oxygen pump works to pump liquid oxygen into the gasification assembly to gasify the liquid oxygen into oxygen which is then delivered to the user end through the oxygen delivery pipe, the oxygen temperature detector detects that the oxygen is transmitted into the control assembly in the oxygen delivery pipe, data comparison is performed by the data comparison unit in the control assembly, when the detected temperature is not within the set safe temperature value range, it is determined that the liquid oxygen has not been completely gasified and enters the oxygen delivery pipe, at this time, the control assembly controls the first liquid oxygen pump and the oxygen control valve to be closed to stop the delivery of liquid oxygen and oxygen, avoids the liquid oxygen from entering the user end through the oxygen delivery pipe to cause production accidents, improves safety, and has high automation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference signs in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 is the overall structure schematic view in the preferred embodiment of the utility model;

[0021] Figure 2 is the connection relationship structure schematic view between the liquid oxygen storage tank and the delivery assembly in the preferred embodiment of the utility model;

[0022] Figure 3 is Figure 2 is an enlarged view of A in FIG. 4;

[0023] Figure 4 is the structure schematic view of the gasification assembly in the preferred embodiment of the utility model;

[0024] Figure 5 is the control principle schematic view in the preferred embodiment of the utility model;

[0025] Figure 6 is the local enlarged schematic view in the preferred embodiment of the utility model.

[0026] In the drawings, the reference signs are explained as follows:

[0027] 1, liquid oxygen storage tank;

[0028] 2, delivery assembly; 21, first delivery pipe; 22, second delivery pipe; 23, third delivery pipe;

[0029] 3. Vaporization assembly; 31. Housing; 32. Coil; 33. Medium delivery pipe; 34. Steam delivery pipe; 35. Manhole door;

[0030] 4. First liquid discharge valve;

[0031] 5. Second liquid discharge valve;

[0032] 6. First liquid oxygen pump;

[0033] 7. First return pipe;

[0034] 8. First check valve;

[0035] 9. First return control valve;

[0036] 10. Fourth delivery pipe;

[0037] 11. Second liquid oxygen pump;

[0038] 12. Second return pipe;

[0039] 13. Second check valve;

[0040] 14. Second return control valve;

[0041] 15. Compensator

[0042] 16. Filter;

[0043] 17. Oxygen delivery pipe;

[0044] 18. Water supply pneumatic valve;

[0045] 19. Overflow;

[0046] 171. Upper liquid level detector;

[0047] 172. Lower liquid level detector;

[0048] 41. Temperature detecting member; 411. Temperature detector; 412. Steam regulating valve;

[0049] 43. Medium circulation assembly; 431. Circulation pipe; 432. Circulation pump.

[0050] 45. Liquid oxygen master valve;

[0051] 46. Liquid inlet pneumatic valve;

[0052] 47. Liquid outlet pneumatic valve.

[0053] 48. Oxygen temperature detector;

[0054] 49. Oxygen pressure detector;

[0055] 50. Temperature and pressure compensated flowmeter;

[0056] 51. Oxygen check valve;

[0057] 52. Oxygen control valve;

[0058] 54. Oxygen flow guide tube;

[0059] 55. Oxygen discharge valve;

[0060] 56. Explosion-proof wall;

[0061] 61. Signal receiving unit;

[0062] 62. Data comparison unit;

[0063] 63. Instruction output unit. DETAILED DESCRIPTION

[0064] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0065] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0066] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0067] Reference Figure 1 The low-temperature liquid oxygen gasification oxygen supply system provided by the present application comprises a liquid oxygen storage tank 1, a gasification assembly 3, a conveying assembly 2 for conveying liquid oxygen in the liquid oxygen storage tank 1 into the gasification assembly 3, and a control assembly. The oxygen output end of the gasification assembly 3 is provided with an oxygen conveying pipe 17 for conveying oxygen to the user end.

[0068] Reference Figure 1 , Figure 2 and Figure 3, the conveying assembly 2 comprises a first conveying pipe 21, a second conveying pipe 22 and a third conveying pipe 23 connected in series, the liquid inlet of the first conveying pipe 21 is connected with the liquid outlet of the liquid oxygen storage tank 1, and the liquid outlet of the third conveying pipe 23 is communicated with the liquid inlet of the gasification assembly 3. Wherein, the first conveying pipe 21 is provided with a first liquid discharge valve 4, a second liquid discharge valve 5 and a liquid oxygen total valve 45 in sequence along the direction of liquid oxygen flow, the flow of liquid oxygen discharged from the liquid oxygen storage tank 1 is adjusted through the first liquid discharge valve 4 and the second liquid discharge valve 5 to ensure the safety and flow control of the system, the liquid oxygen total valve 45 is provided with a pre-valve and a post-valve liquid discharge device before and after the valve, which is used for starting and stopping the pump during production operation and for use during maintenance, wherein safety valves are arranged between adjacent valves to prevent overpressure of the low-temperature liquid conveying pipeline.

[0069] Reference Figure 1 , Figure 2 and Figure 3 , the second conveying pipe 22 is provided with a first liquid oxygen pump 6, a first return pipe 7 and a first check valve 8 in sequence along the direction of liquid oxygen conveying, the other end of the first return pipe 7 is communicated with the inside of the liquid oxygen storage tank 1, and the first return pipe 7 is provided with a first return control valve 9.

[0070] Reference Figures 3-5 , the oxygen conveying pipe 17 is provided with an oxygen temperature detector 48, an oxygen pressure detector 49, a temperature and pressure compensation flowmeter 50, an oxygen check valve 51 and an oxygen control valve 52 in sequence along the direction of oxygen conveying;

[0071] The control assembly comprises a signal receiving unit 61, a data comparison unit 62 and an instruction output unit 63, the signal output ends of the oxygen temperature detector 48, the oxygen pressure detector 49 and the temperature and pressure compensation flowmeter 50 are connected with the signal receiving unit 61, the first liquid oxygen pump 6, the oxygen check valve 51 and the oxygen control valve 52 are connected with the signal of the instruction output unit 63. When the first liquid oxygen pump 6 works to pump liquid oxygen into the gasification assembly to gasify the liquid oxygen into oxygen which is conveyed to the user end through the oxygen conveying pipe 17, the oxygen conveying pipe is detected by the oxygen temperature detector 48 and transmitted to the control assembly, the data comparison unit 62 in the control assembly is used for data comparison, when the detected temperature is not within the set safe temperature value range, it is judged that the liquid oxygen has not been completely gasified into the oxygen conveying pipe 17, at this time the control assembly controls the first liquid oxygen pump 6 and the oxygen control valve 52 to be closed, so that the whole liquid oxygen gasification system is stopped, avoiding the liquid oxygen entering the user end through the oxygen conveying pipe 17 to cause production accidents.

[0072] Reference Figures 3-5When the temperature detected by the oxygen temperature detector 48 is within the set temperature range, it is determined that the liquid oxygen is completely gasified by the gasification device. The oxygen pressure detector 49 and the temperature-pressure compensation flow meter 50 respectively detect the pressure and the delivery flow of the oxygen in the oxygen delivery pipe 17. When the pressure and the flow are not within the set range, the opening of the oxygen control valve 52 is controlled by the control assembly, so as to adjust the pressure and the delivery flow in the oxygen delivery pipe 17, to ensure the stability of the oxygen delivered to the user end, and further improve the production safety.

[0073] Reference Figures 3-5 The oxygen temperature detector 48 is provided with three oxygen temperature detectors 48, which are uniformly distributed along the oxygen delivery pipe 17. The signal output ends of the three oxygen temperature detectors 48 are signal connected with the signal receiving unit 61. In operation, the 3-to-2 interlocking liquid oxygen pump start-stop action and the control of the opening and closing of the oxygen control valve 52 are adopted. That is, when the detected oxygen temperature of any two of the three oxygen temperature detectors 48 is not within the set safe temperature range, the first liquid oxygen pump 6 and the oxygen control valve 52 are controlled to be closed by the control assembly, to prevent the ungasified liquid oxygen from entering the user end through the oxygen delivery pipe 17 and causing an accident. The setting of the three oxygen temperature detectors 48 can further improve the accuracy of the detection of the oxygen temperature in the oxygen delivery pipe 17.

[0074] Reference Figures 3-5 The oxygen delivery pipe 17 is provided with an oxygen drainage pipe 54 between the oxygen check valve 51 and the oxygen control valve 52. The oxygen drainage pipe 54 is provided with an oxygen discharge valve 55, and the signal receiving end of the oxygen discharge valve 55 is signal connected with the instruction output unit 63. When the liquid oxygen is not completely gasified and delivered to the oxygen delivery pipe 17, the oxygen discharge valve 55 is opened to discharge the ungasified liquid oxygen through the oxygen drainage pipe 54.

[0075] Reference Figures 3-5 The oxygen delivery pipe 17 passes through the explosion-proof wall 56, and the oxygen check valve 51, the oxygen control valve 52 and the oxygen discharge valve 55 provided on the oxygen delivery pipe 17 are located in the explosion-proof wall 56. The safety valve is also provided on the oxygen delivery pipe 17, and the manual operation handle of each valve is located outside the explosion-proof wall 56. When a fault occurs, the on-site staff can stand outside the explosion-proof wall 56 to manually close each valve, to ensure the safety of the on-site staff.

[0076] Reference Figure 1 , Figure 2 and Figure 3Also includes a fourth delivery pipe 10 arranged in parallel with the second delivery pipe 22, one end of the fourth delivery pipe 10 is communicated with the first delivery pipe 21, the other end of the second delivery pipe 22 is communicated with the third delivery pipe 23, the fourth delivery pipe 10 is sequentially provided with a second liquid oxygen pump 11, a second backflow pipe 12 and a second check valve 13 along the liquid oxygen delivery direction, the other end of the second backflow pipe 12 is communicated with the inside of the liquid oxygen storage tank 1, and the second backflow pipe 12 is provided with a second backflow control valve 14. The parallel channel formed by the arrangement of the fourth delivery pipe 10 and the second delivery pipe 22 makes the delivery assembly 2 form a standby mode, when any of the liquid oxygen delivery pipelines fails or is under maintenance, the standby delivery pipeline can be used to normally deliver liquid oxygen, realizing non-stop delivery and improving the efficiency of liquid oxygen gasification oxygen supply. The signal receiving end of the second liquid oxygen pump 11 is also signal connected with the command output unit 63, when the standby delivery assembly is used to pump liquid oxygen, if it is detected that the liquid oxygen is not completely gasified, the principle is the same as described above to control the second liquid oxygen pump 11 to be closed.

[0077] Referring to Figure 1 , Figure 2 and Figure 3 , the second delivery pipe 22 and the fourth delivery pipe 10 are provided with compensators 15 on both sides of the first liquid oxygen pump 6 and the second liquid oxygen pump 11 respectively. The compensators 15 can absorb the vibration generated during the operation of the liquid oxygen pump, ensuring the stability of the liquid oxygen delivery pipeline and preventing vibration.

[0078] Referring to Figure 1 , Figure 2 and Figure 3 , the second delivery pipe 22 and the fourth delivery pipe 10 are provided with filters 16 at the liquid inlet ends, which can filter out impurities or large particles in the liquid oxygen, preventing impurities or large particles from being pumped into the first liquid oxygen pump 6 or the second liquid oxygen pump 11, thereby protecting the first liquid oxygen pump 6 or the second liquid oxygen pump 11 from damage.

[0079] Referring to Figure 1 , Figure 2 and Figure 3 , the second delivery pipe 22 and the fourth delivery pipe 10 are provided with liquid inlet pneumatic valves 46 and liquid outlet pneumatic valves 47, which are used to control the on-off of the liquid oxygen delivery in the corresponding second delivery pipe 22 and fourth delivery pipe 10. The liquid inlet pneumatic valve 46 is provided with a high point exhaust member (not shown in the figure) and a low point liquid discharge member (not shown in the figure) between the filter 16, the high point exhaust member is used to exhaust the air in the pipeline to prevent the pipeline from being gasified to damage the equipment due to cavitation. The low point liquid discharge member is used to exhaust the liquid oxygen in the pipeline during the start and stop of the pump during production operation and maintenance.

[0080] Referring toFigure 4 and Figure 6 The gasification assembly 3 comprises a shell 31, at least one coil 32 arranged in the shell 31 and connected to the liquid oxygen, a medium conveying pipe 33 for conveying the heat exchange medium into the shell 31, and a steam conveying pipe 34 for heating the heat exchange medium, the steam conveying pipe 34 is arranged in the middle of the top of the shell 31, and the steam outlet of the steam conveying pipe 34 extends to the middle and upper part of the shell 31.

[0081] With reference to Figure 4 and Figure 6 One end of the coil 32 is arranged at the bottom end of one side of the shell 31 and connected to the liquid outlet of the third conveying pipe 23, and the other end of the coil 32 is arranged at the upper part of the shell 31 and extends out of the shell 31, and the end extending out of the shell 31 is connected to the oxygen conveying pipe 17. The liquid oxygen entering the gasification assembly 3 is heated by the gasification assembly 3, and the density of the heated and gasified oxygen is less than that of the liquid oxygen, and the gasified oxygen is directly discharged from the top end of the coil 32, so that the liquid oxygen inlet of the coil 32 is arranged at the bottom of the shell 31, and the top end of the coil 32 is the oxygen discharge port, and this structure is reasonable.

[0082] With reference to Figure 4 and Figure 6 The medium conveying pipe 33 is arranged at the bottom of the shell 31, and the liquid inlet of the medium conveying pipe 33 extends into the shell 31, and the heat exchange medium conveyed therein is desalted water; the steam conveying pipe 34 is arranged at the top of the shell 31, and the gas inlet end of the steam conveying pipe 34 extends to the upper part of the shell 31. By arranging the steam pipe 34 at the top of the shell 31 and extending downward into the shell 31 and located at the upper part of the shell 31, the steam can better heat the desalted water in the shell 31. The heated desalted water heats and gasifies the liquid oxygen entering the coil 32, and then the oxygen is conveyed to the user end by the oxygen conveying pipe 17.

[0083] With reference to Figure 4 and Figure 6, the shell 31 is provided with liquid level detection piece 17, liquid level detection piece 17 includes the upper liquid level detector 171 and the lower liquid level detector 172 arranged on the shell 31, the medium conveying pipe 33 is provided with the water replenishment pneumatic valve 18, the signal output end of the upper liquid level detector 171, the signal output end of the lower liquid level detector 172 and the signal receiving end of the water replenishment pneumatic valve 18 are all connected with the control assembly signal. The liquid level of the desalted water in the shell 31 is detected by the upper liquid level detector 171 and the lower liquid level detector 172, when the liquid level of the desalted water does not meet the set requirement, at this time, the upper liquid level detector 171 or the lower liquid level detector 172 will feed back the detected signal to the control assembly, and the start-stop of the water replenishment pneumatic valve 18 is controlled by the control assembly, so that the liquid level of the desalted water in the shell 31 is controlled within the set height, and the automatic water inlet is realized. The overflow port 19 is arranged on the upper end of one side of the shell 31, and the overflow port 19 is located above the upper liquid level detector 171, when the desalted water in the shell 31 is added too much, it is discharged through the overflow port 19 at this time, which further ensures that the liquid level of the desalted water in the shell 31 is within the set height.

[0084] Reference Figure 4 And Figure 6 Further comprising medium circulating assembly 43, the medium circulating assembly 43 includes circulating pipe 431 arranged on the shell 31 and circulating pump 432 arranged on the circulating pipe 431. When the steam is pumped into the shell 31 through the steam conveying pipe 34 arranged at the middle position of the shell 31, the desalted water in the shell 31 can flow circularly under the action of the medium circulating assembly 43, so as to accelerate the heating of the desalted water and make the heat exchange more sufficient. The manhole door 35 is arranged on the shell 31, which facilitates the on-site staff to check and maintain the inside of the shell 31.

[0085] Reference Figure 4 And Figure 6 The shell 31 is provided with temperature detection piece 41, the temperature detection piece 41 includes temperature detector 411 arranged on the shell 31 and steam regulating valve 412 arranged on the steam conveying pipe 34, and the signal receiving end of the steam regulating valve 412 and the signal output end of the temperature detector 411 are connected with the control assembly signal. The heating temperature of the desalted water in the shell 31 can be detected in real time by the temperature detector 411, so as to always control the heating temperature of the desalted water in the shell 31 within the set temperature range, and avoid that the temperature is too high or too low to affect the heating of the liquid oxygen in the coil pipe 32.

[0086] In summary, by sequentially arranging the oxygen temperature detector 48, the oxygen pressure detector 49, the temperature-pressure compensation flowmeter 50, the oxygen check valve 51 and the oxygen control valve 52 on the oxygen delivery pipe 17 along the oxygen delivery direction; when the first liquid oxygen pump 6 works to pump liquid oxygen into the gasification assembly 3 to gasify the liquid oxygen into oxygen and deliver the oxygen to the user end through the oxygen delivery pipe 17, the oxygen temperature detector 48 detects the oxygen transmitted into the control assembly, the data comparison unit 62 in the control assembly compares the data, when the detected temperature is not within the set safe temperature value range, it is judged that the liquid oxygen has not been completely gasified into the oxygen delivery pipe 17, at this time, the control assembly controls the first liquid oxygen pump 6 and the oxygen control valve 52 to be closed, so that the whole liquid oxygen gasification system is stopped, the liquid oxygen is prevented from entering the user end through the oxygen delivery pipe 17 to cause production accidents, the safety is improved, and the automation degree is high.

[0087] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, any equivalent changes or modifications according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A cryogenic liquid oxygen vaporization oxygen supply system, characterized in that, It includes a liquid oxygen storage tank (1), a vaporization assembly (3), a conveying assembly (2) for conveying liquid oxygen in the liquid oxygen storage tank (1) to the vaporization assembly (3), and a control assembly; The delivery assembly (2) includes a second delivery pipe (22) and a first liquid oxygen pump (6) disposed on the second delivery pipe (22). The oxygen outlet of the gasification component (3) is provided with an oxygen delivery pipe (17) for delivering oxygen to the user end. The oxygen delivery pipe (17) is provided with an oxygen temperature detector (48), an oxygen pressure detector (49), a temperature and pressure compensation flow meter (50), an oxygen check valve (51), and an oxygen control valve (52) in sequence along the oxygen delivery direction. The control components include a signal receiving unit (61), a data comparison unit (62), and an instruction output unit (63). The signal output terminals of the oxygen temperature detector (48), the oxygen pressure detector (49), and the temperature and pressure compensated flow meter (50) are all connected to the signal receiving unit (61). The first liquid oxygen pump (6), the oxygen check valve (51), and the oxygen control valve (52) are all connected to the instruction output unit (63).

2. The cryogenic liquid oxygen vaporization and oxygen supply system according to claim 1, characterized in that, An oxygen drain pipe (54) is provided on the oxygen delivery pipe (17) and between the oxygen check valve (51) and the oxygen control valve (52). An oxygen discharge valve (55) is provided on the oxygen drain pipe (54). The signal receiving end of the oxygen discharge valve (55) is connected to the command output unit (63).

3. The cryogenic liquid oxygen vaporization oxygen supply system according to claim 1 or 2, characterized in that, There are three oxygen temperature detectors (48), which are evenly distributed along the oxygen delivery pipe (17). The signal output terminals of the three oxygen temperature detectors (48) are all connected to the signal receiving unit (61).

4. The cryogenic liquid oxygen vaporization and oxygen supply system according to claim 2, characterized in that, It also includes an explosion-proof wall (56), through which the oxygen delivery pipe (17) passes, and the oxygen check valve (51), the oxygen control valve (52) and the oxygen discharge valve (55) provided on the oxygen delivery pipe (17) are located inside the explosion-proof wall (56).

5. The cryogenic liquid oxygen vaporization oxygen supply system according to any one of claims 1, 2, or 4, characterized in that, The vaporization assembly (3) includes a housing (31), at least one coil (32) disposed in the housing (31) and through which liquid oxygen is introduced, a medium conveying pipe (33) for conveying heat exchange medium into the housing (31), and a steam conveying pipe (34) for heating the heat exchange medium. One end of the coil (32) is disposed at the bottom of one side of the housing (31) and connected to the liquid outlet of the conveying assembly (2). The other end of the coil (32) is disposed at the upper part of the housing (31) and extends out of the housing (31) to connect with the oxygen conveying pipe (17). The medium conveying pipe (33) is disposed at the bottom of the housing (31). The steam conveying pipe (17) is disposed at the top of the housing (31), and the air inlet end of the steam conveying pipe (34) extends into the housing (31) and is located at the upper part of the housing (31).

6. The cryogenic liquid oxygen vaporization and oxygen supply system according to claim 5, characterized in that, A temperature detection element (41) is provided on the housing (31). The temperature detection element (41) includes a steam temperature sensor (411) provided on the housing (31) and a steam regulating valve (412) provided on the steam delivery pipe (34). The signal output terminal of the steam temperature sensor (411) is connected to the signal receiving unit (61), and the steam regulating valve (412) is connected to the command output unit (63).

7. The cryogenic liquid oxygen vaporization and oxygen supply system according to claim 6, characterized in that, The housing (31) is provided with a liquid level detection device, which includes an upper liquid level detector (171) and a lower liquid level detector (172) provided on the housing (31). The medium conveying pipe (33) is provided with a water replenishment pneumatic valve (18). The signal output terminals of the upper liquid level detector (171) and the lower liquid level detector (172) are both connected to the signal receiving unit (61). The water replenishment pneumatic valve (18) is connected to the command output unit (63).

Images